Austenite – Read More About It

Posted by Jordan Laurent | Posted in distributions | Posted on 22-06-2010-05-2008

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Adding specific alloying substances, like nickel or manganese could stabilize the structure of the Austenitization, to facilitate the high temperature adjustment of steel alloys of low ratios. Concerning the critical case of Austenitic stainless-steel, highly rated alloy contents form a stable structure, even in the ordinary Room-Temperature. But on the other side, substances like chromium, molybdenum and, silicon tend to reveal the stabilization of the Austenite.

The Austenite is stable only over 910 C. Meanwhile, using the Face-Centeraed-Cubic enables the raising growth of the Face-Centered-Cubic and metallic transition. The raising growth of the Austenite is very fruitful concerning the perfect lattice matching and the similarity of the diamond face of the Face-Centered-Cubic. More of mono-layers (?-iron type) could enhance rapidly as the predetermined thickness of strain multi-layers have been posed in addition to the near stability with theory basis.

Transformation of Austenite

The temperature of magnetic materials “especially when they have a Curie point”, tend to act magnetically at almost the exact temperature that the transformation of Austenite has. That behavior is attached to the special attitude of the Austenite,

Emission of Thermo “Optical”:

The blacksmith results in noticeable modifications within the carbon-iron systems, therefore it handles the desired mechanical features on the metal. This happens mostly within quenching hard and cooling operations. Within this trend, the shadow of light supported by the workspace is a pretty good measurement of temperature. When it turns into Red from basically Orange, we can say that the Austenite is formed in moderate or high carbon steel.

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Author: Jordan Laurent
Article Source: EzineArticles.com
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Everything You Need to Know About Aluminum Oxides and Microdermabrasion

Posted by Audrey Jacobs | Posted in distributions | Posted on 22-06-2010-05-2008

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The fourth most abundant compound in the crust of the earth is aluminum oxide. It is the ore from which aluminum metal is produced. The gemstones: rubies and sapphires are aluminum oxide. Aluminum oxide is used as an abrasive in many polishing and grinding applications. Aluminum oxide is used in the dental and surgical fields. It is also known as a technical ceramic. The category, technical ceramics applies to all materials known for their hardness and chemical inertness. And now, we have aluminum oxide and microdermabrasion.

When aluminum oxide is fused, the crystals are second in hardness only to the diamond. It is inert chemically in the microdermabrasion environment. It is eco friendly and allowed in landfills. Aluminum hydroxide is a wet and non crystallized form of aluminum oxide and is used in antacids.

Aluminum oxide, here known as alumina, has been used for years in the dental industry for dentures and restorations. The dental paste used to polish your teeth uses a form crystals. It was first used in the 1920′s and is now being used again, after a short hiatus, mostly in microdermabrasion equipment. Exposure of aluminum to patients and operators from aluminum in microdermabrasion treatment is not hazardous. It would require the aluminum crystals to be converted into a biologically active form and introduced to the bloodstream or body tissue. However, the crystals used in microdermabrasion are aluminum oxide which is chemically inert. It is not water soluble and is therefore safe and cannot become biologically active.

There were many tests conducted by scientists as to the safety of the crystals as to how they would effect the lungs; if it had carcinogenic effect; and if it had any embryonic effect. The outcome of all of the research showed that it was safe and had none of the aforementioned effects and is therefore safe to use as an implant material such as dental implants.

When used in microdermabrasion systems the aluminum oxide is used as crystals that slough off the dead skin cells to reveal a rejuvenated and renewed skin. The crystals are used in conjunction with a cream or lotion to make the treatment smoother and somewhat less painful. Since the treatment calls for a vacuuming of the dead skin cells, at the time of the treatment, there is no cause to feel that any of the crystals would be left imbedded in the new skin.

As we have mentioned before, the ruby, a gemstone, is a variety of the same crystals and gets its crimson color from traces of chromium. It can be had in colors of red-purple and red-orange. The ruby is a very hard and tough gemstone second only to the diamond which is the hardest mineral in the world. The diamond is also used in particle form in microdermabrasion treatments. The organic ruby is rare and most of those that we see on the market today are synthetic. Because of their hardness and their close association to the diamond, natural rubies are very expensive.

We can’t all afford to go to the spa and many of us don’t have time. As managing editor of bestmicrodermabrasionathome.com, Audrey helps you achieve beautiful skin without breaking the bank using an at home microdermabrasion system visit us for more on microdermabrasion products.

Author: Audrey Jacobs
Article Source: EzineArticles.com
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Petrol Hedge Trimmer – An Important Tool For Gardening

Posted by Ben NA Smart | Posted in distributions | Posted on 22-06-2010-05-2008

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A piece of gardening/agricultural equipment used to trim hedges is called as a hedge trimmer. A trimmer can either be of petrol/gasoline, or powered by electrical power. A petrol hedge trimmer has the following benefits namely: Garden hedges which earlier used to be cut with a kitchen knife can now be cut using a petrol powered trimmer. A petrol hedge trimmer allows the work to be done in a better way and with lesser effort than a kitchen knife. There are basically two types of trimmers namely stand-alone and tractor mounted. Petrol hedge trimmers are generally of the stand-alone variety.

Petrol trimmers are available in a number of varieties and brands like Draper, Makita, McCulloch, Ryobi, Spear and Jackson. You have the liberty to choose from the above brands whether you want it for cleaning your garden as a hobby or do gardening on a professional basis. You have to decide your use and then accordingly go for the best brand that can fulfill your basic requirements. The McCulloch Gladiator trimmer comes with an antivibration mounted 25cc engine to enhance the comfort of the user. It also has a 22 blade with a 12mm tooth spacing making the lightweight petrol trimmer ideal for pivot, pine and conifer.

A Ryobi hedge trimmer is of a superior quality having a powerful 25cc 2-stroke engine, with Roto Choke and Quick Fire Carburetor so that it can start easily. It also has a 28mm tooth gap and is suitable for tacking all types of hedges and thick growth. The Ryobi trimmer comes equipped with a 60cm double-sided, double-reciprocating steel blade. The Ryobi RH2660DA trimmer offers a fast cutting rate and a powerful cut. It also comes with an adjustable rear handle rotating to five positions thus enabling the operator to work comfortably at any angle. The fuel tank capacity of this trimmer is 0.3 liters whereas the unit weight is just 5.34 kgs. Ryobi is offering value added services with their hedge trimmer in the form of a safety kit containing a protecting steel mesh visor with ear defenders and non-slip gloves. Ryobi gives free delivery for its hedge trimmer’s alongwith a two year warranty.

The Oleo-Mac trimmer comes with a special offer along with its larger sized (750mm) 30 cut, is offering a faster cut rate and a cleaner cut and hence it is ideal for bigger jobs and taller hedges. This hedge trimmer is the lightest of all the others at a weight of 5.5 kgs. The weight distribution and efficiency of the anti-vibration system offer comfort of handling and convenience of use in all working conditions. Along with the reinforced gear drive, the chromium plated engine cylinder and ergonomic handles and simple controls, all professional features have been incorporated in this model throughout. The Oleo-Mac trimmers are easy to maintain as also their design is such that it gets you going as quickly as possible when you are out in the field.

Choose your perfect petrol hedge trimmer, with expert advice and all the best deals from around the internet. Check out petrol hedge trimmer for more details.

Author: Ben NA Smart
Article Source: EzineArticles.com
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Diabetes – The Echo Effect

Posted by Jon Barron | Posted in distributions | Posted on 22-06-2010-05-2008

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Over the years, I’ve talked about various aspects of diabetes, but never actually devoted an entire newsletter to the subject. Yes, high fructose corn syrup, starches, and added sugars are a problem, but they only scratch the surface of the issue.

The Diabetes Echo Effect

Type 2 diabetes is not like any other disease. Most diseases such as cancer and MS are linear. In other words, you get the disease and it progresses in a straight line, from point A to point B. It may have regressions and remissions in which it backs up on its linear path for a bit, but then it picks up steam and once again proceeds on down the same track to its ultimate conclusion. Diabetes does not do that.

Diabetes actually follows multiple, mutually reinforcing paths — an echo effect if you will, with each echo reinforcing and amplifying all the other echoes, or “effects”. This distinction is of vital importance because it mandates multiple points of intervention if you wish to reverse diabetes and not just slow its progression.

Reversing Diabetes Begins with Understanding Insulin

Despite long intervals between meals and the erratic intake of high glycemic carbohydrates, blood sugar levels normally remain within a narrow range. In most humans, this range is from about 70-110 mg per dl. (Note: a blood sugar reading of 100 equates to about 1/5 of an ounce of sugar (5 g) total in the bloodstream of an average 165 lb (75 kg) male. That’s it: 1/5 of an ounce.

The body’s mechanisms for restoring normal blood glucose levels when it drops outside of its range (either low or high) are extremely efficient and effective.

High blood sugar levels are regulated by the hormone insulin, which is produced by beta cells in the islets of Langerhans in the pancreas. These cells are extremely sensitive to variations in blood glucose levels and, under normal circumstances, respond with extraordinary speed to any variation.

When you eat high glycemic foods, you suddenly increase the amount of sugar in your blood. This increase triggers the beta cells in the pancreas to release insulin, which travels in the blood to cells throughout the body, where it facilitates the uptake of sugar in the individual cells so that it can be quickly converted to energy. If you eat too much sugar, insulin tells the body to store the excess sugar as glycogen in the liver (and also, to a lesser degree, in muscle tissue). When the glucose levels come down to acceptable levels, this triggers the beta cells in the pancreas to stop the production and release of insulin, which allows the process to stabilize. When blood glucose levels drop too low, however, the hormone glucagon is released from alpha cells (located in the pancreas), which triggers the release of sugar stored in the liver as glycogen; thus, once again bringing blood sugar levels back to normal. One important note: release of insulin is strongly inhibited by the stress hormone, noradrenaline, which is why blood sugar levels increase so dramatically during stress.

The Initial “Sound”: Insulin Resistance

On the surface of the cells of your body sit insulin receptors. These little “lock and key” chemical gateways act like little doors that open and close to regulate the inflow of blood sugar. After many years of consuming a high-glycemic diet, these cells become damaged by exposure to so much insulin that their “doors” begin to malfunction and shut down.

As a result, the fat cells, muscle cells, and liver cells of the body become resistant to insulin so that normal amounts of insulin are no longer adequate to produce a normal response. The cells require ever and ever greater quantities of insulin to achieve even the most minimal response. Insulin resistance in fat cells results in the breakdown of stored triglycerides, which elevates free fatty acids in the blood. Insulin resistance in muscle cells reduces glucose uptake which keeps sugar levels high in the blood, and insulin resistance in liver cells reduces glucose storage, which also raises blood glucose levels.

The First Diabetic Echo: Increased Production of Insulin

To continue the “door analogy” we started above — with fewer doors open, as we mentioned, your body needs to produce ever more insulin to “push” the glucose into the cells. More insulin causes even more doors to close and as this vicious cycle continues, a condition called “insulin resistance” sets in.

This is a primary cause and effect response by your body. If normal insulin levels are not enough to make the cells behave properly, the beta cells in your pancreas continue to sense high levels of glucose in the blood; they thus go into overdrive to pump out ever greater quantities of insulin in an attempt to bring blood sugar levels back to normal. In most cases, this extra insulin is enough to bring things back under control — for a time — but with two significant side effects:

It puts undue stress on the beta cells in the pancreas. They can only operate in overdrive for a limited period of time before they burn out. At that point, not only can they no longer produce sufficient levels of insulin even under prodding, they have effectively lost all ability to produce insulin under any conditions. They are burnt out.

The increased insulin comes with a whole host of its own side effects. See Echo Three below.

The Second Diabetic Echo: High Sugar Damage

Too much sugar in the blood leads to increased thirst in the body’s attempt to get rid of the extra sugar. This leads to increased urination and starts putting an extra burden on your kidneys. Too much sugar causes the small blood vessels throughout the body to narrow as your body tries to abate the damage caused to organs by minimizing the ability of the excess sugar to reach them. The higher the blood sugar level, the more the small blood vessels narrow. The blood vessels thus carry less blood, and circulation is impaired. Poor circulation in turn results in complications such as: kidney disease, poor wound healing, and foot and eye problems. This sugar imbalance also alters fat metabolism, increasing the risk that cholesterol-laden plaque will build up in the large blood vessels. Finally, sugar also sticks to proteins, in effect carmelizing them, causing their structural and functional properties to be changed. It is a primary reason that wounds don’t heal since they have trouble making quality collagen, the connective tissue that is the major structural protein in the body.

The bottom line is that people who have diabetes are at considerable risk of multiple “complications.”

In addition, as we mentioned earlier, stress results in the adrenal glands pumping adrenaline into the bloodstream which increases free fatty acids in the blood and shuts off the release of insulin. In obesity, less and less insulin is able to reach the insulin-responsive muscles. In the end, there is not enough insulin to meet the demand.

Diabetic neuropathy (damage to nerves caused by diabetes) affects the peripheral nerves, such as those in the feet, hands and legs. Symptoms include numbness, tingling and pain.

The Third Diabetic Echo: Excess Insulin Damage

Excess sugar is not the only problem associated with diabetes. Excess insulin is also a killer. Insulin is the master hormone of your metabolism. When it is out of balance and your insulin levels are consistently elevated, a long list of deadly complications are created:

Heart Disease

Hardening of the Arteries

Damage to Artery Walls (elevated insulin levels are directly implicated in the damage done to arterial walls that leads to atherosclerosis)

Increased Cholesterol Levels

Increased Triglycerides

Elevated Blood Pressure

Vitamin & Mineral Deficiencies

Kidney Disease

Fat Burning Mechanism Turned Off

Accumulation and Storage of Fat

Weight Gain — Obesity

The Fourth Diabetic Echo: Destruction of the Beta Cells

This is the big echo in which all the other echoes get ramped up to catastrophic levels.

When blood sugar levels rise even slightly above 100 for as little as two hours, beta cell failure is detectable. People that maintain blood sugar levels of as little as 110 can lose as much as 40% of their beta cell capacity in as little as two years.

In other words, the very cells of your body responsible for keeping blood sugar under control are destroyed by the excess blood sugar that they are unable to control, which echoes back on the beta cells in the pancreas, destroying them and thus causing blood sugar levels to rise even further. This then reverberates through the body once again, echoing back once more on the pancreas, killing even more beta cells — on and on until there are no beta cells left to destroy.

Echo Five: Breakdown of the Body

At a certain point in the process, when your body can no longer produce any insulin and resists even the insulin you take through injection, you begin to experience the ravages of diabetes. At that point, you’re looking at:

Neuropathy

Amputation

Kidney failure

Dialysis

Heart disease

Blindness

Death

Summarizing the Diabetic Echo Effect

Let’s say you start developing the early signs of diabetes and you decide to clean up your diet. The problem is that you’ve already started the echoes. So although your diet may now have lower amounts of sugar, your pancreas is compromised so that it can’t produce enough insulin to handle even normal amounts of sugar, and the cells of your body are now resistant to insulin so that even if your pancreas weren’t damaged, it couldn’t produce enough insulin. This means that sugar levels remain high in your bloodstream even though you’ve corrected your diet, and the diabetic damage continues apace.

But it doesn’t stop there. Remeber, an entirely separate echo has also been set in motion. As a result of the higher than normal levels of sugar and insulin in your blood, you’ve damaged your kidneys so that they can no longer fully cleanse your blood of waste. That means that even if you are able to reestablish normal blood sugar levels, the toxins not cleared by your kidneys continue to damage the organs of your body — including the pancreas and the kidneys, which means the damage continues apace and eventually your pancreas and kidneys will fail.

Don’t worry. Although the situation may sound grim, it’s not hopeless. It does, however, present the limitations of the medical approach, and it does show why the Baseline of Health program, which deals with the whole body all at once, is likely to produce significantly better results than the medical approach.

So What Can You Do About Diabetes?

Standard medical treatment offers several flawed approaches:

Drugs like metformin seek to inhibit the absorption of high glycemic carbohydrates in the intestinal tract and enhance insulin sensitivity in the body, thereby reducing the need for extra insulin.

The major problem with metformin is its effect on the gastrointestinal system, ranging from a mild loss of appetite to nausea, vomiting, abdominal discomfort, cramps, flatulence and diarrhea. Many patients find these symptoms impossible to cope with and discontinue the tablets within days.

Lactic acidosis is a rare but dangerous side effect of metformin. This is a serious condition where the cells of the body do not get enough oxygen to survive. It is caused by a build up of lactic acid in the blood. Most of the cases described have been in people whose kidneys were not working well (as we’ve already seen, an inevitable problem with diabetes).

Drugs like glyburide work by stimulating the pancreas to release more insulin.
Glyburide is so effective that you need to carry glucose pills with you in case you produce so much insulin that your blood sugar drops too low and you fall into a diabetic coma. Although this rarely happens, it is indicative of the larger problems with glyburide:

It raises insulin levels so high that your body faces all of the problems of high insulin levels discussed above.

It doesn’t repair beta cells; it just forces them to work harder — thus speeding up the day when they break down and become dysfunctional.

Extra insulin in the form of pills or injections cover you when the beta cells in your pancreas have burned out and can no longer produce sufficient insulin by themselves or even when stimulated by drugs such as glyburide — until, that is, your body’s insulin resistance is so high that no amount of insulin is adequate for the task at hand. At that point, your body goes into rapid decay.

A Diabetic Alternative: Stopping the Echoes

Obviously, any viable alternative needs to address the problems that medicines do not. They also need to work “with” the body so that they can work long term — not squeeze your body dry until it eventually breaks down. And finally, any viable alternative needs to stop all of the echoes — all of them without exception — so that nothing bounces back to retrigger the problems.

With that in mind, in addition to changing your diet (no more sodas and high glycemic snack food), you will want to explore the following options:

Inhibit absorption of high glycemic foods, without creating unwelcome responses in the intestinal tract, such as those experienced using metformin. This can be accomplished with the following herbs:

Nopal cactus

Gymnema sylvestre

Naturally reverse insulin resistance so less insulin is required through:

Konjac mannan

Cinnulin PF

Chromium GTF

Omega-3 fatty acids

Repair beta cells in the islets of Langerhans in the pancreas to optimize insulin production reserves as opposed to forcing the cells to dramatically overproduce as with glyburide, which leads to inevitable burn out.

Gymnema sylvestre

Alpha lipoic acid or R lipoic acid

Lower blood sugar levels through proper diet and herbal supplementation:

Fenugreek extract

Momordica charantia

Corosolic acid

Mulberry

Reduce stress. Remember, adrenaline suppresses the release of insulin.

Protect organs and proteins from damage caused by higher than normal levels of sugar through a mixture of antioxidants and nutraceuticals such as:

L-Carnosine

Acetyl-l-carnitine

DMAE

CoQ10

Alpha lipoic acid or R lipoic acid

Benfotiamine

Protect organs from damage caused by higher than normal insulin levels by cleaning the blood and by using:

A blood cleansing formula

Proteolytic enzymes

Omega-3 fatty acids

The bottom line to preventing and reversing diabetes is to do everything, and do it all at once. Since diabetes is not a single straight line progression disease, you need to stop every single “echo” so that no aspect of the disease can reverberate and start the whole process moving downhill again. You need to stop it all or it will all start again.

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Author: Jon Barron
Article Source: EzineArticles.com
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Variation of Mechanical Properties of a Cryogenically Treated Cutting Tool (High Speed Steel)

Posted by Sujoy Dutta | Posted in distributions | Posted on 22-06-2010-05-2008

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1. Introduction:

Mechanical properties like hardness, wear resistant, tensile strength are very important for cutting tool. The Cryogenic treatment on metal has been extensively employed since many years for various application like stabilizing dimension of precision machined part and gauges with change in temperature, removal of internal stresses, improving wear resistant and hardness.

Cryogenic treatment of metal parts means cooling these parts at a predetermined rate, up to a given Cryogenic temperature (-80C), maintaining these parts at that lowest temperature for a given duration of time and then allowing these parts to warm-up at a given warming-up rate to room temperature.

So the main variable of the Cryogenic treatment are:

a. Rate of cooling.

b. The lowest maintained temperature for a given duration.

c. The duration for which the specimen are maintained at the lowest temperature.

d. The rate of warming up

(Chillar, Agarwal. 1995)

Cryogenic treatment has been successfully applied on steel to improve its mechanical properties. This occurs because of transformation of almost all the retained Austenite in steel to Martensite thereby making the steel more Wear resistant.

2. Literature Survey:

Evidence of Cryogenic treatment was found during 1937 in Soviet Union (Carry and Robert 1980). Metals are gradually cooled to cryogenic temperature (-80C), soaked for a prolonged period and warmed to room temperature at a predetermined rate, the lattice structure of the atoms change due to stress being relived during Cryogenic treatment. In case of ferrous metal, the soft ductile FCC structure Austenite gets converted into strong and harder BCC structured Martensite. Apart from this, a wide precipitate of newly formed Eta-Carbides (responsible for increased wear resistance) into the hard Martenside structure induces a dense lattice structure.

Some theories by Zhmud (1980) are:

a. Cryogenic treatment was effective for intemperate and adequate tempered tool.

b. The soaked time (5min to 10 hrs) had no effect on the tool life.

c. A decrease in tool life within 5-7 days after treatment and increases again with repeated treatment.

Cryogenic treatment can be performed by different methods.One of such methods consists of a Cryo-treatment chamber and an auxiliary liquid nitrogen supply system. In this set-up Cryogenic treatment of the tool was done by indirect cooling and with no direct contact with liquid nitrogen. The Cryo-treatment is a doubled walled stainless steel container with inter-spaced filled with Polyurethane foam. The top cover made of stainless steel has a double end shaft fan motor assembly mounted centrally. The liquid nitrogen, connecting valve, pressure gauzes, feed through and outlet connections are all mounted on the top flange.

Below the top cover a cylindrical buffer tank is mounted where the liquid nitrogen get collected and evaporated vapour are vented through a vent pipe. The shaft of the fan motor assembly passes through this buffer tank and has fan blades mounted on both sides. A copper disk has been fixed to the bottom of the buffer tank to ensure better heat transfer. Aluminium fans are fixed at the bottom to ensure forced convection cooling of the space inside the Cryo-treatment chamber. The specimen kept in the stainless steel tray can be cooled by two ways:

i. A circulating fan housed below the buffer tank, induce forced convection currents picking up cold from stored liquid nitrogen in the buffer tank downward over the specimen. The cold gas moving down to the bottom of the chamber gets cooled and moves radially sideways. These gases re-enter on the fan region through the opening of the slots in the aluminium fins. Thus forced convection current loop is established within the chamber.

ii. Part of the liquid nitrogen stored in the buffer tank is made to circulate over the shroud by thermo-syphon effect. To facilitate this a copper tube is connected to the buffer tank and is brazed on the outer wall of the shroud over its entire length. A solenoid valve is operated by a PID controller with predetermined set points, is used to regulate the liquid nitrogen supply to the chamber. The temperature of the specimen is measured using temperature sensors.

Another method can be by using refrigerator with ethyl alcohol and dry ice as refrigerant for Cryogenic treatment. The specimen to be treated was placed in a clean and dry thermocol box. The specimen with the thermocol box were then kept in a refrigerator for duration of 12hrs to bring down the temperature of the specimen to 0C. After a period of 12 hrs, dry ice was added into the thermocol box using a spatula. While handling, care was taken such that cry ice doesn’t come in contact with the skin. The specimen and the dry ice were mixed using the spatula and the thermocol box was kept in the freezer of the refrigerant for duration of 12 hrs. The temperature of the specimen and dry ice in the freezer for a time period of 12hrs ethanol of required quantity was directly added into the thermocol box. The temperature of the specimen along with the ethanol and dry ice was noted.

The thermoses box containing specimen, dry ice and ethanol was again placed in the freezer of the refrigerator for a time interval of 48 hrs. After treating the specimen for 48hrs the thermocol box was taken out of the freezer and the temperature of the specimen along with the ethanol and dry ice is once again noted. The treated are then brought down to room temperature by opening the lid of the thermocol box and kept it opened till it attain room temperature then they are taken out of the thermocol box. The purpose of using dry ice and ethanol is to bring down the temperature below 0C. Dry ice has a temperature of -30C to -40 C and ethanol has freezing temperature of -110C. Thermocol box is used to retain the temperature during treatment. By the above procedure the temperature of the specimen is brought in a step-by-step manner so that the specimen retain that temperature of -80C.

3. Comparative Study:

A comparative study is made between cryogenically treated specimen and non-cryogenically treated specimen to know about the significant change of the mechanical properties of cryogenically treated materials like wear resistance, hardness and impact strength.

3.1 Wear Test and Frictional Force:

Nadig D.S, Jacob. S, Kasthurirengan. S, Karunanithi R and Geetha Sen had conducted an experiment to study the effect of cryogenically treated HSS tool (M 42) with following composition:

Carbon: 1.1% Molybdenum : 9.5%

Vanadium : 1% Cobalt : 8%

Chromium : 4% Tungsten : 1.5%
The square tool of dimension 3/16″x3/16″x4″ length which was cryogenically treated at -80C was subjected to a standard sliding wear testing pin on disk apparatus.

For comparative study a non-cryogenically treated HSS tool (M42) was tested for wear resistance and frictional force.

Grinding Wheel: A100Q5v30

Load: 20 N

Speed of the grinding disc: 400 RPM

Tool track radius: 20mm

Test duration: 10 minutes

3.1.1. Procedure:

The pin on the disc works on the principal of sliding wear. The tool was located in a fixture and is made to press against a rotating grinding wheel. To ensure proper forced contact between the tool-grinding wheel interface, selected dead weights were mounted. When the horizontal grinding wheel rotates at a selected speed the pressing tool face continuously wears with time. Due to the continuous wear of the tool, its height reduces which is sensed by an LVDT. The output of the LVDT in micron indicates the wear resistance property of the tool. Output of the LVDT is connected to the computer for data acquisition. The data of the continuous wear and frictional force between the tool and grinding wheel are recorded by computer.

3.1.2. Result:

a. Wear Resistance:

From the above experiment it was observed that the Cryo-treated tool has developed higher wear resistance property. The improvement in the wear resistance was around 33%.It can be said that this improvement in wear resistance is caused due to the conversion of soft retained Austenite to hard Martensite, formation of Eta-carbide and development of a uniform and refined micro structure of atom with high density.

b. Frictional force:

The frictional force between the tool and rotating grinding wheel reduced after Cryogenic treatment by around 30%, as shown in graph (2). The reduced frictional force reduces the friction between the tool and material and problem of formation of built of edges, gumming effect, frequent sharpening of the tools etc., can be avoided.

3.2. Hardness Test:

Shivkumar B. J, R. Venkatatram, B. S. Ajaykumar, Pushpa Iyengar and Gopal Prakash. (2003) conducted hardness and impact test on a Cryogenically treated HSS tool to know about its variation in hardness and impact strength. Brinell hardness testing machine was used to know about the change in Brinell hardness number in a cryogenically treated HSS (M2 grade) in comparison with a non-cryogenically treated HSS tool of same grade.

3.2.1. Procedure:

Load and indentor diameter were selected depending upon the specimen. The specimen was placed on the anvil and it was moved upward by turning the elevating screw. Load was applied by means of hand lever for 30 seconds. After this the specimen was removed from the anvil and the diameter of the impression on the specimen caused due to the ball indentor was measured using a micrometer microscope. Results for both cryogenically treated and non-treated specimen were tabulated.

3.2.2. Result:

It is observed that there is an improvement in the hardness of Cryogenically treated M2 HSS specimen by 18.6% in comparison with non-cryogenically treated specimen.

3.3. Impact Test:

Izod impact testing machine was used to know about the impact strength of a Cryogenically treated HSS (M2 grade) tool in comparison with non-cryogenically treated HSS tool of same grade.

3.3.1. Procedure:

Lateral dimension of the specimen at the notch was measured, the pendulum was lifted and latched to the latching tube. The friction pointer was adjusted, the specimen was kept on the vice as a cantilever beam with the notch facing towards the striker. Then the pendulum was released, as it swung down it broke the specimen and the reading was taken and tabulated.

3.3.2. Result:

It is observed that there was a decrease in impact strength by amount of 32.3% of the Cryogenically treated HSS M2 grade tool in comparison with non-cryogenically treated HSS tool of same grade.

4. Conclusion:

From the above study we can conclude that by treating a HSS tool Cryogenically which involves subjecting it to a sub zero temperature of about -80C , soaking the specimen for certain interval of time and then bringing it back to normal temperature. There is a significant improvement in its Mechanical properties.

From the above test we can conclude that:

i. With the increase of wear resistance in a Cryogenically treated HSS tool, tool wear decreases and hence increasing its life and efficiency.

ii. With decrease in frictional force in case of Cryogenically treated HSS tool, there is less heat generation at tool chip interface and hence there is an increase in cutting efficiency and reduction in machining time and machining cost.

iii. There is an improvement in hardness of a Cryogenically treated HSS tool at the cost of ductility to a small extent.

iv. With increase in hardness there is a decrease in decrease in impact strength and hence the tool loses its toughness to a small extent.

So treating a HSS tool Cryogenically improves its mechanical properties like wear resistance and hardness and hence increases its productivity at the cost of manufacturing cost.

5. Acknowledgement:

Assistance of Dr. Madhu, Mr. H.V. Panchakshari, and our colleagues are gratefully acknowledged in making this paper.

6. Reference:

1. CARY, R. F., and ROBERTS, G. A., 1980, Tool Steel, 4th ed. (Metals Park, Ohio: American Society for Metals), pp. 667-670

2. G. N. Haidemenopoulos, G. B. Olson. Morris Cohen, and K. Tsuzaki. 1989, (Dept. of Material Science and Engg, MIT, Cambridge.), pp. 207-212

3. “Nadig D.S, Jacob. S, Kasthurirengan. S, Karunanithi R and Geetha Sen (Center for Cryogenic Technology, Indian Institute of Science, Bangalore. And ISRO, Bangalore.)

4. “Effect of Cryogenic Treatment on Mechanical Properties of HSS”. Shivkumar B. J, R. Venkatatram, B. S. Ajaykumar, Pushpa Iyengar and Gopal Prakash. (2003) (BIT and East point college of Engg, Bangalore)

5. “Performance characteristics of cryogenically treated high speed steel drill” S. Chatterjee (1991)

6. Zhmud, E. S., 1980,”Improved tool life after shock cooling”. Metal Science and Heat Treatment, October 701-703.

Sujoy Dutta
Student of 3rd year Mechanical Engineering. Interested in studying the behavior of different material on cryogenic treatment.

Department of Mechanical Engg
Acharya Institute of Technology, Bangalore, Karnataka
E-mail: sujoydtt@yahoo.co.in

Author: Sujoy Dutta
Article Source: EzineArticles.com
Digital TV, HDTV, Satellite TV

Monitor Enclosure Used For Outdoor Digital Advertising and in Healthcare

Posted by Dave Bradley | Posted in distributions | Posted on 22-06-2010-05-2008

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An LCD Monitor enclosure are used through out various industries from healthcare to outdoor digital signage applications, but the main reason for use is to guard the enclosures hardware.

A screen enclosure refer to small format displays, normally up to 27″ and in a 16:9 screen ratio. Now these can be used in manufacturing facilities as part of the factory information system to display data to staff, or equally in a hospital for displaying patient’s details.

Now these displays can even be located outdoors to form an external video wall used for digital advertising, these work by splitting the signal on the media player and spreading them equally over the video wall, without any unique “magic black box”.

Protection is paramount – so no matter if it is from extremely high or low temperatures or the vandals, a display enclosure will protect the display and the media player from the riggers of nature.

There are 2 kinds of TV enclosures, the first are manufactured from toughened LEXAN material, however we have found that they suffer under extreme temperatures and have to be replaced with a solid steel LCD enclosure, these are more rugged and durable.

A solid steel monitor enclosure is designed so that the end solution provides a protective solution, so even air borne particles can be filtered out to prevent them harming the hardware inside. In some instances monitor enclosures have been equipped with air conditioning units so they can operate independently from other systems.

Now when water is present stainless steel is used to produce the enclosure, this material has excellent corrosion resistant properties due to the amount of Chromium in its chemical genes.

Proving that a monitor enclosure can be produced from various materials and these really do depend up on the application the screen will be used for, from healthcare, factory use, or outdoor digital advertising – there is a solution for your application.

Dave owns the leading manufacturer of LCD enclosures, this range of LCD enclosure are used throughout the world through a network of integrators.

Author: Dave Bradley
Article Source: EzineArticles.com
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Thermolyne Hot Plates – Get Smart Ones

Posted by Christoffer X Altesino | Posted in distributions | Posted on 22-06-2010-05-2008

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Thermolyne hot plates call for savvy moves when you’re buying them. With hot plate and cast aluminum crest, the Thermolyne thermostat can supply full-fledged power till it reaches a set temperature. Then it cycles for holding temperatures within (say) 3C.

Usually, the cast aluminum made top plate comes with ribs onto the underside for preventing warping/bucking. Embedded within the refractory plates, there are heating elements made of Nickel-chromium alloy. These plates conserve the very original placement of these coils. This way, they are able to guard those from all sorts of damages.

Take for instance its stainless steel case (especially perforated), as it allows unbound cooling airflow. This ensures that the control system is cool. This also prevents any kind of damage (caused by heat) to the table tops. And temperature control remains stepless. You can expect the top operating temperature to be at 371C.

The best thing about aluminum made top plates is that, they can outperform other similar materials. Thus, you are entitled to get better temperature consistently and stably. The Thermostatic temperature controlling system offers superb stability. You also get safe and consistent higher temperature use. Nevertheless, the cycle light shows when the power supply is reaching the heating element.

Now let’s turn to the stainless steel plates of Thermolyne plates. They offer optimal strength even for heavier loads. When it comes to the surface, 12″ x 24″ measurement is comment. Usually, surface of the top plate can accommodate as much as 40 lbs (over 18 kg). You can find hot plate cases that are painted with special paint for better chemical resistance. Some Thermolyne plates are meant for glass vessels only. You can expect 38c to 371C or 100F to 700F, of temperature range.

Actually, there is a large degree of applications for hot plates featuring demand-type thermostat controls, which automatically reaches and stays at temperature range of 38C (100F) to 371C (700F). When you buy one, try and get heavier products, which come with cast-aluminum top. This will ensure even heat distribution. These types of Thermolyne hot plates are good for large heating jobs or even the smaller ones.

And ensure that you get seamless stepless temperature selection flexibility as well as minimal overshoot, cycle light and baffled air cooling. As is required by most professionals, heating element wiring should come embedded for ensuring superior protection. The wires should be however easier to replace whenever necessary. In most cases, 30.5 cm x 30.5 cm (12″ x 12″) models are equipped with a 3-wire cord/plug; whereas 30.5 cm x 61 cm (12″ x 24″) models call for conduit connection.

Find great deals and reviews on electric hot plates and outdoor kitchen cabinets.

Author: Christoffer X Altesino
Article Source: EzineArticles.com
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Insulin – What Role Does it Play in Body Fat?

Posted by David Grisaffi | Posted in distributions | Posted on 22-06-2010-05-2008

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Many people believe that insulin is a simple hormone that aids in blood sugar reduction. It has many functions in one of the main ones is growth and repair. He simply understand the function of insulin within your body you will be a will to better adjust your dietary intake to reduce the amount of fat upon your body. I can insulin is powerful hormone which is created in the pancreas and aids in the control and distribution of energy. Insulin levels elevate in response to food intake. When food is ingested into our bodies and our blood sugar rises rapidly you will secrete insulin to reduce and to store this energy for future use. The problem lies with the lack of calorie expenditure, in other words movement, exercise, get off the couch. I wrote about the efficiency and not calorie deficiency a few articles that and it stands to reason that the more we sit around the more we eat the more fat weight gain.You want to make sure that your meal consists of complex carbohydrates, fibrous carbohydrates, high-quality protein and good fats such essential fatty acids. Now of course, in my world this would be fantastic, however many people indulge themselves in way too many displacement foods. Displacement foods can be categorized by to the processed foods: such as nasty sports bars, all packaged commercial foods – such as donuts, ding dong’s you get the picture. Many and foods in heavy syrup, realistically anything made in the microwave on a regular basis and most sandwich meats.

I would got a little background on insulin let’s move into how insulin actually stores excess blood sugar. The main problem with eatin many processed foods is a continual cascade of insulin secretion and cell sensitivity. Insulin most commonly is believed to take the blood sugar and convert it to glycogen. Then store it in the liver and muscle tissue. Well you can already see the picture is your couch potato eating potato chips, blood sugar rises insulin is secreted from the pancreas to reduce blood sugar to its normal level the excess sugar is converted by the liver into glycogen and then sent back out to be stored in the muscle and excess in the liver. The problem comes that your muscles and liver are already full. Your muscles and liver have a very limited storage capacity. So this ugly cycle continues over and over and over again. So what happens to that excess glycogen after it has been told no no by the liver and the muscles. It gets stored as triglycerides or fatty acids the problem lies in the form of fatty acids that is stored as: saturated fat (that’s right the worst type of fat you possibly could put in body). So inviting someone to go on high carbohydrate diet is ludicrous. Just ask yourself how they fatten up cattle for they are slaughtered for your primer of dinner at Ruth’s Chris steakhouse. Now you know! And you do it to yourself.

This brings up the subject of insulin sensitivity and it’s rapid rise in the western world. Insulin sensitivity in a nutshell “your cell receptors inability to except glucose as energy” and thus its leads to the above mentioned round and round roller coaster for fat gain. Your cell becomes resistant because of a constant bombardment of a toxic environment due to high insulin levels. The cells generally shut down as they get more and more pounded on by excess insulin due to excess process sugar intake. More insulin that is secreted due to excess blood sugar the more the cells are exposed to insulin and from that they become resistant to it. So to get the sugar/energy into cell the pancreas must produce more insulin to get the job done. This continues little by little until the cell becomes very resistance to insulin and has a very difficult time operating correctly. Both men and women suffer from this continual at producing machinery mainly due to again on healthy diet, delivers inability to break down and detoxify. Fat gain is associated with insulin insensitivity and the overconsumption of carbohydrates. This leads to many deficiencies in certain nutrients, minerals, vitamins such as vitamin B chromium magnesium sink and especially the main important fat alpha linolenic acid better known as omega-3′s. A lack of omega-3 fatty acids in this country is an epidemic the ratio between omega-3′s and omega six fatty acids should be one to four. Adding essential fatty acids to your diet can reduce carbohydrate cravings thus reducing insulin sensitivity.

Some things that you again want to avoid while reducing your carbohydrate consumption is alcohol. Alcohol is the number one reason your liver has a hard time breaking down any food substances. Remember alcohol is an empty calorie and contributes to a rapid rise in blood sugar followed by a rapid decrease in blood sugar called hypoglycemia. This leads to someone often eating more than they would regularly. Coffee and soda are another no no’s if if you want to lose body fat and improved your overall wellness. There are many adverse effects associated with the above three such as the insomnia, osteoporosis, nervousness, insulin resistance, decreased divided in mineral absorption and attention deficit syndrome.

Insulin is not just involved in carbohydrate storage in also aids in protein and fat storage. So if insulin is being decreased and not used efficiently in your ability to use protein and fat in the proper manner is heavily decrease. If you are someone trying again muscle mass in can see how this could affect your plight. It’s one also has to do with your immune system, storage of magnesium, blood lipids thyroid regulation, osteoporosis, aging and much more.

So in conclusion I would suggest a few things to get yourself on the right track. Try to avoid weight fluctuations, rapid gaining and rapidly losing of body fat it teaches your insulin and told insensitivity system to going to high mode at the first sign. That is why is very easy to gain weight after you lose it. Drink plenty of water, eat essential fatty acids, avoid excessive alcohol consumption, and exercise regularly.

David Grisaffi is a Sports Conditioning Coach and holds multiple certifications including three from the prestigious C.H.E.K. Institute: Level II Corrective Holistic Exercise Kinesiologist, Golf Biomechanic, and Nutrition and Lifestyle Coach. Plus he is also the author of the popular selling e book, “Firm and Flatten Your Abs,” which teaches you how to develop a ripped abdominal region. Visit his site at http://www.flattenyourabs.net/

Author: David Grisaffi
Article Source: EzineArticles.com
Digital Camera Information

A Guide to Drinking Water Filters

Posted by Christian Carlsson | Posted in distributions | Posted on 22-06-2010-05-2008

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Drinking water filters are used for purification of drinking water running from the tap and provide better tasting and smelling drinking water by removing chlorine and bacterial contaminants. They are relatively inexpensive.

There are six different and harmful types of contaminants which are to be removed during water filtration process. To be precise:

o Chlorine and chloramines
o Volatile Organic Compounds (pesticides, herbicides, etc.)
o Heavy metals (Lead, Mercury, Aluminum, Cadmium, Chromium, Copper)
o Bacterial and viruses (Giardia and Cryptosporidium)
o General Sediment
o Fluoride

Regarding personal health, Chlorine and Volatile Organic Compounds (VOCs) are the most acidic and toxic contaminants found in the municipal water.

Ample water filters are available specially used to purify and filter tap water. These are home-based water filters, i.e. used at homes for everyday use of water i.e. cooking as well as drinking. They operate best when replaced every six months, thereby removing the bacteria regularly.

Large scale water purification systems also exist, which effectively filter water using many processes and require installation of those filtering units. These drinking water filters use chemical processes like reverse-osmosis and distillation.

However, these systems are very expensive, and are usually not used to filter tap water; they remove essential minerals from water giving it a ‘flat’ taste due to the removal of minerals and nutrients. They are not recommended for prolonged use by humans. Moreover, VOC’s in water are also not removed in the distillation process.

Most drinking water filter manufacturers should be certified and proven to provide pure water. These certified filters do their job at removing contaminants and bacteria from the water.

Although certified drinking filters are trusted to give the purest of water, there are certain water filters which allow quite a small amount of contaminants through.

For instance, granular filters are the types which do not utilize the chemical adsorption process, thereby letting several contaminants to pass through. Likewise, rapid water filters do not give the water, adequate amount of time to come in contact with the filter media, hence number of contaminants removed is practically limited.

If you’re interested in learning more about how to find the best drinking water filters, visit my website, where I share what I personally use and recommend.

Christian Carlsson is passionate about staying healthy through natural methods. Visit his website http://www.water-filter-advice.com/ today to learn more about the powerful benefits of pure water.

Author: Christian Carlsson
Article Source: EzineArticles.com
Digital Camera News

Dietary Supplements are the Best Acne Treatment

Posted by John Petersons | Posted in distributions | Posted on 22-06-2010-05-2008

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Only medication and conducting cosmetic procedures will not solve the problem of acne. A dietary supplement also is the Best Acne Treatment.

During the treatment of acne observe the designated treatment, diet, sleep at least 8 hours a day and play sports.

For Best Acne Treatment one should limit or completely stop using excessively spicy, sour, sweet and fatty meals. They lead to the aggravation of acne. Need to eat as little as possible of the old fruit and vegetables, potatoes don’t play any role in developing of acne, one should drink plenty of juices.

The next step for acne treatment is to eliminate dysbiosis and vitamin A deficiency with a parallel treatment of major chronic diseases patients on the recommendations of professionals, trained to the operations of the skin, and integrated physiotherapy and cosmetology management after complete healing of the epidermis of the skin of the patient, assessing acne treatment at each stage of the scale and the Cook system SCORAD, evaluation of treatment of urogenital infection on diagnostic techniques in accordance with the guidelines of the Public Health Ministry Traditional methods to hygienic skin care, removal of skin tumors caused by human papilloma virus, remove nevus in the operating area, treat keloid scars, removal and prevention of vaginal dysbiosis with a verification provocation, the patient’s psychological preparation for surgery.

Best Acne Treatment through dietary supplements is:

* Milk products, fruits and vegetables – they are a source of calcium.
* Fish, cheese, cheese and eggs, which are the source of phosphorus.
* Vegetables, yeast and cornmeal, which give body to vitamin D.
* Rosehip, lemons, cabbage, black currant, containing a large amount of vitamin C.
* Raisins, cabbage, prunes and apricots, fill up potassium.
* Beef liver, soy, beans and peas are rich in chromium.

It is best if the food should be both mixed and baked, but fried foods should be ignored, as individuals want it, is not worth it. One should consume those dietary supplements three- four times a day. The diet should be full, so at this time, one can forget about fried food.

In addition to cosmetic and medical treatments for acne, the Best Acne Treatment by providing proper dietary supplements proved to be a trust worthy against acne.

John Petersons has been contributing to leading magazines for the past 10 years. He’s also an accredited researcher on the subject for leading research institutes in the US.

Author: John Petersons
Article Source: EzineArticles.com
Digital Camera Times

The Danger of Tattoos

Posted by Fox Harrison | Posted in distributions | Posted on 25-05-2010-05-2008

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Tattoos are popular, colourful ways for us to express our creativity, our experiences and our personality. For many people tattoos carry symbolic meaning or have personal memories behind them. As more celebrities are seen with tattoos, either permanent or temporary henna, they are becoming an increasingly popular fashion accessory. However, on the spur of the moment many people forget that proper tattoos are permanent and they are actual extremely serious because they can cause life-threatening problems.

At the moment tattooing isn’t properly licensed or regulated but artists must register with the Environmental Health Department. It is vital that you check with your local council beforehand whether your tattooist is registered, because the local authorities should have registration and inspection schemes in place. A health and safety certificate should be on display or with the operator so ask to see one before you have your tattoo done.

The health and safety standards say that:

  • Sterile needles must be used for every customer
  • Hands must be washed thoroughly before and after tattooing
  • Disposable latex gloves must be worn and a new pair worn for each customer. (Some people can have allergic reactions to the latex gloves so you could take an antihistamine before you have it done, or if you are aware that you have this allergy you should inform the artist beforehand who should be able to use a different glove.)
  • It is illegal to tattoo anybody under 18.

The artist should ask you a list of medical questions before doing the tattoo to check that you are alright to have one. For example people with haemophilia should not have tattoos as their blood doesn’t clot properly and so they cannot stop any bleeding which may occur during a tattoo. Pregnant women are advised against tattoos, as are diabetics, people with heart conditions, people with conditions that weaken the immune system and also people on aspirin or aspirin-based medication as these thin the blood so you bleed more.

Firstly tattoos are wounds and therefore good hygiene is imperative. When you have a tattoo the ink is injected into the dermis or the lower layer of your skin which doesn’t flake away making it permanent. The machine that is used can pierce the skin as many as 3000 times per minute making holes as deep as 1/16 of an inch or 1.5mm.

One of the biggest problems associated with tattoos is blood borne infections such as:
Hepatitis B and C. Hepatitis affects the liver causing inflammation. Hepatitis B is a DNA virus and it can be acute (self-limiting) or chronic (long standing). The symptoms of acute hepatitis B are:

  • Loss of appetite
  • Nausea
  • Vomiting
  • Body aches
  • Mild fever
  • Dark urine
  • Development of jaundice.

It generally lasts a few weeks and gradually improves in most cases. Chronic Hepatitis C is often asymptomatic and can lead to advanced scarring of the liver (cirrhosis) and liver cancer.
Hepatitis C is a blood borne infection which is often asymptomatic. It causes liver inflammation which can lead to scarring of the liver (fibrosis) or advanced scarring of the liver (cirrhosis) which in turn can lead to liver failure and cancer. It is spread by blood to blood contact and at the moment no vaccine is available. Early medical intervention is beneficial but many people only experience mild symptoms and so don’t seek treatment until it has developed into more serious problems. Some symptoms can include:

  • Decreased appetite
  • Fatigue
  • Abdominal pain
  • Jaundice
  • Itching
  • Flu-like symptoms.

HIV. Human Immunodeficiency Virus can lead to AIDS; Acquired Immunodeficiency Syndrome. It is transmitted through bodily fluids and it infects white blood cells which are part of the body’s immune system, weakening it so that you cannot fight off other opportunistic diseases, leading to AIDS.
Tetanus. This infection causes muscle stiffness and spasms, commonly starting with the jaw muscles making it difficult to swallow or open your mouth. Other common places for muscle spasms are the neck, the chest making it difficult to breathe, the stomach wall and the arms and legs. Other symptoms are:

  • extreme sensitivity to touch,
  • high fever,
  • sore throat,
  • rapid heartbeat,
  • difficulty breathing,
  • headache,
  • bleeding into the bowels, and
  • diarrhea.

Tetanus can lead to suffocation, blood poisoning, cardiac arrest, kidney failure and exhaustion, all of which can be fatal.
Septicemia. A bacterial infection commonly known as blood poisoning. Symptoms include:

  • High fever
  • Violent shivering
  • Faintness
  • Cold and pale hands and feet
  • Rapid and shallow breathing
  • Restlessness
  • Delirium
  • Shock
  • Loss of consciousness

Other problems include:

  • Chronic skin ailments
  • Allergies
  • Lichenoid, which are small bumps of reactive tissue, similar, but more accentuated to those seen in chronic eczema.
  • Sarcoidal granulomas, which are ball-like collections of immune cells below the surface of the skin.
  • Scaling
  • Redness
  • Itching
  • Infections leading to discolouring of the tattoo
  • Swelling (due to an allergic reaction)
  • Ulceration, which is the formation of sores.
  • Delayed hypersensitivity reaction. This occurs several years after the tattoo and causes sudden local itching, scaling, redness and swelling.
  • Lymphocytoma, which is a mass of mature white blood cells which resemble a tumour; it is a skin reaction.
  • Keloids are raised scars that are not easily removed.
  • Photosensitivity occurs when the sun reacts with the dye causing an allergic reaction.
  • Photo toxicity occurs when the sun reacts with the dye causing localised sun burn.

According to research carried out by Dr Bob Haley and Dr Paul Fischer from the University of Texas South western Medical School tattoos account for “more then twice as many hepatitis C infections as injection drug use” and people tattooed in a parlour are “nine times more likely to by infected by hepatitis C due to infected needles and unsanitary conditions.” In America you are not allowed to donate blood to the American Red Cross for a year after having a tattoo due to the high risk of blood borne infections.

As well as the risk from blood borne infections the ink itself poses a number of risks. Until recently the ink being used in tattoos was not monitored and many artists use inks which are not approved for skin contact. Some inks are actually “industrial grade” colours suitable for use in printers or car paint! Many people can have allergic reactions to the ink the most common one being to mercury in red inks, but others include manganese in purple inks, chromium in greens, cobalt in blues and cadmium in yellows. Irreversible darkening can occur in flesh, red, tan and white coloured inks which are used in cosmetic procedures and is thought to be caused by the conversion of ferric oxide (Fe2O3) to ferrous oxide (FeO).

Many inks also contain metal filaments so if you have a Magnetic Resonance Imaging scan (MRI) you may feel a burning pain. This is because magnetic metals convert the radio-frequency pulses of the MRI machine into electricity and the burning could be electricity running through the tattoo. Because of this some hospitals won’t do MRI scans on people who have tattoos. MRI scans take very detailed pictures of almost all body tissues and is particularly useful in seeing areas around the spine and the brain. It is the best technique of finding tumours in the brain and whether the tumours have spread to nearby brain cells and therefore extremely important and useful.

At the moment lasers are used to try and remove tattoos or at least fade them but this is expensive and painful as it involves burning the skin which results in scarring. However, a new removable dye is just coming out which is made of plastic beads containing the dye or pigment which is approved by the Food and Drug Administration. As it the dye is contained inside plastic beads it can’t be absorbed by the body, however, when a laser hits the bead it breaks down and the dye is absorbed.

Tattoo artists are bound by the Supply of Goods and Services Act 1982 as they are providing you with a service. Therefore they must provide this service with “reasonable skill and care” and they are liable for “consequential loss” if the tattoo goes wrong and you have to pay for corrections or removal. It is best to go to a licensed tattooist if only because they are more likely to have the protection and correct insurance cover should anything go wrong.

If you have suffered from any blood borne infections, allergic reactions or other medical conditions due to the negligence of your tattoo artist; or if your tattoo doesn’t resemble your design or descriptions then you could be entitled to compensation towards any extra tattoo treatments or medical treatments that you required to remedy the damage, and towards any discomfort or embarrassment you may have felt while you were recovering. It is advised that you take pictures of your tattoo as evidence of any damage or incorrect detailing and if possible pictures of the designs that were intended or agreed upon for comparison purposes.

Have you suffered injury as a result of an accident or somebody else’s wrong doing? If so, and it wasn’t your fault we can help you make a compensation claim for your physical, psychological and financial losses

At Macks we understand the importance of a good lawyer / client relationship. We pride ourselves on looking after our clients, communicating effectively and listening to people’s needs
To receive advice and help for your situation call Free phone 0800 652 4321 or 01642 252828
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Author: Fox Harrison
Article Source: EzineArticles.com
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How to Choose Under Sink Water Filter

Posted by Alvyn Khoo | Posted in distributions | Posted on 25-05-2010-05-2008

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Water tap in kitchen is the most important source of water that we use to drink and cook our daily meals thus the kitchen sink is where most household install the under sink water filter. There are plenty of under sink water filters available in the market and most of them are equipped with filtration system that claimed to be able to purify tap water. Water that processed by these under sink water filters appear to be clear and clean, safe for consumption and cooking purpose. Well, I believe most of these under sink water filters can reduce or may be remove majority of the four categories of contaminants found in tap water such as Microbial Pathogens (bacteria and parasites), Organics (volatile organic chemicals and THMs), Inorganics (arsenic, chromium, lead and mercury) and Radioactive Elements (decay of uranium in soils and rocks).

If every under sink water filter is of the equivalent specifications and able to produce the same quality of water, there is nothing to compare. The question here is, “Why these under sink water filters are being sold at different price?”. Simply the answer is, “These are different products being manufactured by different companies, hence having different specifications on the water filter cartridges used and obviously, the quality of water produced by these under sink water filters will not be the same.

Generally, most under sink water filters would have sediments filter to remove sand and large particles, another activated carbon filter to trap synthetic chemicals and other organic contaminants. However, not all these under sink water filters are made of same quality of parts and components. As for activated carbon cartridge, it can be either in granular form or porous carbon block which perform much better than the other. Some carbon cartridge have incorporated KDF-55D which is zinc and copper to make them bacteriostatic. That means that bacteria cannot grow inside the filter. Advanced features such as combination of carbon filtration’ ion exchange, and sub-micron filtration able to produce top notch quality water that no other undersink water filter can match.

It is important that a good undersink water filter is able to stabilize the pH between 7.25 and 8.5 which is suitable to our body to operate at optimal level, able to trap or filter away TDS, iron, and rust down to .5 microns (40 times smaller than what is visible to the human eye) which the water carry when passing through the distribution piping. Unlike, reverse osmosis system and distillation, an undersink water filter that come with selective filtration is able to reduce chemical and metal contaminants while leaving in good, healthy minerals for pH balanced, great tasting water.

Since the undersink water filter uses cartridges, especially the activated carbon cartridge, to trap and capture the harmful contaminants, it would have a finite life span to ensure its best performance. Due to the cartridge needs to be replaced at six to nine months interval, you must choose the undersink water filter company that are able to send or ship you the cartridge promptly. In case you forget to replace, an added service like email reminder or auto shipping will be of great value.

In short, different undersink water filters produce different level of quality water, thus the actual types of contaminants which are being filtered, percentage of harmful chemicals being reduced and species of organic bacteria being eliminated are the direct determination of the undersink water filter performance.

Lastly, I must say, when come to choosing the undersink water filter, you must not at any level of exposure to a chemical carcinogen, ever consider this is toxicologically insignificant for human being, and no such thing as “acceptable levels” for chemicals in our drinking water should be tolerable. You should never trade your health matter for a sub quality undersink water filter.

Alvyn Khoo is a health researcher on water purification issues. He helped 2 teams of people promoting home water purifier from 2 reputable companies in Asia but later decided to stay independent and neutral on his patient in home water purifiers system. View and share his patient now at http://www.absolute-filtered-water-site.com to get the facts on how water can benefits life if we choose the right water purification system. Drinking water is best consumed as pure as the nature originally intended. Don’t risk the life of yourself and your love ones because you are not supposed to do that. Just spend some efforts to get to know the water a little bit better, your life goes a long way.
It’s not about getting you to buy and install water purifier, but it is about how you can improve the quality of your life, the way you deserve it.
We want you to smile, and spread that as well, to the people you care.

Author: Alvyn Khoo
Article Source: EzineArticles.com
Smiling shark

The ABC’s of Nutrition – B is For

Posted by Elizabeth Guimont | Posted in distributions | Posted on 30-04-2010-05-2008

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So you want to be healthy? Adding good nutrition into your life should be as easy as the ABC’s. Try these suggestions and see how easy it can be.

B is for Banana. Eating at least one banana a day contains everything a human needs, including all of the 8 amino-acids our body cannot produce itself. Bananas do have more starch than sugar and those wanting to reduce starch should take note. Bananas have also been used in Ayurvedic medicine to help with peptic ulcers.

B is for Vitamin B and Brewer’s Yeast. B vitamins are best taken as a balanced B-complex, which includes all of them. Synergy is needed between the different B vitamins to work well. If necessary, one can take additional specific B vitamins if your condition warrants it, in addition to a B-complex. B vitamins are water soluble which means your body does not store them. Daily doses are needed. Brewer’s Yeast is a source of Vitamin B-complex. It also is a good source of chromium. Some of the functions B vitamins do is: process carbohydrates, fat, protein, support nervous system, effects energy,

B is for Bromelain and Boswellia. Bromelain found in pineapples is a protein digesting enzyme useful with digestion, breaking down atherosclerotic plaques, inhibiting platelet aggregation (blood clots), and help with smooth muscle spasms – like menstrual cramps. Both Bromelain and Boswellia help with reducing inflammation. Studies have shown Boswellia to be as effective as NSAIDS or over-the-counter anti-inflammatories, but does not lead to stomach irritation.

B is for Beans and Bran.
The key operative word here is fiber which both beans and bran have a lot of. Specfically, the fiber in bran reduces the urinary levels of calcium which in turn reduces the incidence of kidney stones. Guar gum found in most beans (legumes) are one of the most potent cholesterol lowering agents and blood sugar balancers.

B is for Bach Remedies. Many people still have not heard of the wonderful Bach remedies that readily available at most health food stores. The most famous is “Rescue Remedy”. Rescue Remedy has a soothing effect on the nervous system. It can be taken internally or externally.

B is for Beets. Whether you eat this fresh, juiced or cooked, beets are a powerful liver and blood cleanser. It is a great tonic.

B is for Berries, especially Blueberries. The deep red-blue color of many berries are remarkable in their ability to strengthen collagen structures in the body. Berries are great antioxidants and anti-infllammatory agents. Blueberries have been credited with control of diarrhea and help with urinary disorders. Blueberries have astringent and germicidal agents.

B is for Bilberry. During WWII bilberry jam was credited with improving the RAF pilots with night vision. Bilberry assists vision, and decreases vascular permeability. It also has astringent and anti-inflammatory properties that help the GI tract.

B is for Burdock. The famous American Indian essiac formula for cancer contains slippery elm, burdock root, sheep sorrel and turkey rhubarb. Burdock root is a blood purifier. Can be used internally and externally. Burdock has been credited with treating sore throats, assisting with digestion and skin conditions like eczema. It has anti-inflammatory and anti-microbial properties.

B is for Broccoli and Brussell Sprouts. Both are cruciferous vegetables that are believed to be helpful in preventing cancer. Broccoli is rich in Vitamin A and Folic Acid. 1 cup of cooked broccoli has the same amount of calcium as 4 ounces of milk and your daily Vitamin C requirements.

B is for Bacteria, the friendly kind like Bifidobacteria and lactobacillus. These are found in yogurt cultures and help keep the gut balanced with good bacteria. This is important to take after a round of anti-biotics which kills off the good bacteria along with the bad. Also helps to candida/yeast infections in check.

Dr. Elizabeth Guimont Chiropractic Physician Orenco Station Chiropractic Care http://www.orencostationchiropractic.com To order the book “The ABC’s of Nutrition” go to http://www.cafepress.com/thechirostore

Author: Elizabeth Guimont
Article Source: EzineArticles.com
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Rundown – Chronically Tired – Listless – You May Have Adrenal Fatigue

Posted by Barry R Parker | Posted in distributions | Posted on 30-04-2010-05-2008

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Peggy was a highly-driven and successful career woman with boundless energy who had worked long days for several years. Healthy and vibrant, she seemed indestructible. Then one of her children got seriously sick, and as she helped nurse him back to health, her own health began to suffer. Long after her son had recovered she still felt weak and listless throughout the day, and eventually she began to have problems getting out of bed in the morning. She went to the doctor, but he could find nothing physically wrong with her. Finally a nurse-friend suggested that she might have adrenal fatigue.

What is adrenal fatigue? Although it can be caused by several different things, it usually involves stress and the body’s response to stress. The response to stress comes into play when the brain senses an emergency. It goes into what is referred to as the “fight or flight” mode. Within a fraction of a second, a region of the brain called the hypothalamus sends a signal to the adrenal glands. (They are glands that sit on the top of the kidneys.) When they receive the signal they excrete adrenaline that rushes to the heart and other parts of the body. The heart responds by beating faster, which in turn, sends extra blood to the muscles and organs. At the same time the respiratory rate increases and the lungs rush extra oxygen to the brain. The brain then releases endorphins which help the body function more efficiently, and finally the adrenaline helps increase the body’s energy by releasing glucose from its glycogen stores.

The Adrenaline surge is just the first part of the stress response; once it is underway, the adrenal glands also secrete cortisol. It surges through the body performing many important functions: it replaces the energy that the adrenaline rush has depleted, it is used by the immune system to put it on alert, and it acts as a check on the overall response, and when it is complete, it signals the brain to stop it.

It’s easy to see from the above that the adrenal glands play a vital role in our body. They help us respond to stressful situations and they protect our body. The problem is that our lives are now so full of stress that stressful events frequently come one after the other, with several occurring in a day. And each time they occur the adrenal glands have to respond, and if they are forced to respond too frequently they start to run down and wear out. When this happens they are soon operating well below their optimum; this is what we refer to as adrenal fatigue. It’s important to point out, however, that while stressful events are a major factor in adrenal fatigue, many other things also contribute to it. Some of them are: poor diet, lack of exercise, lack of sleep, overuse of stimulants such as coffee, and illness.

The major symptoms of adrenal fatigue are: chronic fatigue, trouble getting out of bed in the morning, problems sleeping, low energy, depression, weight gain, lack of endurance, problems handling stress, and a craving for salt. It’s important to catch the condition at this stage; if it is ignored, the adrenal glands will eventually stop working, a condition referred to as Addison’s disease. Addison’s disease causes such things as suppression of the immune system, muscle and bone loss, hormonal imbalance, and it can be fatal.

One of the major difficulties with adrenal fatigue is that it is not universally recognized by the medical profession, and many physicians are not familiar with it. And although it is important to talk to your doctor about it, drugs are usually not needed to overcome it. The major thing that is needed is a lifestyle change. Stress is the main thing that brings it on, so the first thing you have to do is get rid of any stress in your life. In addition, however, several other things are needed. The major ones are:

1. Take more breaks and concentrate on relaxing.

2. Regular meals and better nutrition are important. Concentrate on getting enough vegetable, whole grains, nuts, and fish (for omega-3). Also, avoid hydrogenated fat, coffee, simple carbohydrates, and junk food.

3. Exercise, but don’t overdo it. Aerobic exercise is particularly important, but you should couple it with some weight lifting.

4. Make sure you get to bed early and get enough sleep.

5. Several supplements are also helpful. some of the best are:

Vitamin C, Vitamin E, Vitamin B-6, B-complex, Niacin, and minerals, Magnesium, zinc, selenium and chromium. Finally, licorice and ginseng are also helpful.

Barry Parker is a professor emeritus (physics) at Idaho State University. He is the author of 22 books on science, health, writing, and music. His website is BarryParkerbooks.com and he has several blogs, one of them is at Barrysbuzz123.blogspot.com He has done research in biophysics (mutations in the DNA molecule) and in relativity theory (Einstein’s field theory), has a strong interest in health and fitness, self-improvement, and in music (particularly piano). He taught a writing class at ISU for several years. His most recent book is “Feel Great Feel Alive.”

Author: Barry R Parker
Article Source: EzineArticles.com
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Uterine Fibroids Treatment – Foods That Are Harmful

Posted by Dee Francis | Posted in distributions | Posted on 30-04-2010-05-2008

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Reading different health reports and also newspapers – be it on fibroids, prostate or breast cancer, there is a similarity in the reports – our daily diet and what we consume! As mentioned before, as a generation, we are not aware that certain foods we eat are causing us to become ill and diseased – yet we are not made aware of this by our doctors. Why is that? Many doctors are not interested in our health issues, if we are ill, their concern is to operate! Not many doctors are health conscious therefore not sharing with us important information that would avoid us having to be operated on and at the same time educating us about what is good and what is bad for your internal organs.

Foods that are harmful and bad for you are:

Red meat, beef, lamb, steak – foods from animal – living foods
Chicken – injected for quick growth and the pesticides turns into toxins in our bodies and causes harm
Milk, cheese, yoghurt – the cows are injected with pesticides allowing them to grow fatter – causing us ills – mucus forming in our internal body – causing allergies
White bread, potatoes, pasta, rice – starches and yeasts causes bloated stomachs, causes constipation, to name but a few – change to brown rice, brown bread etc. etc. These are the good fibers that your body yearns not from the white products.
Sugared foods – cakes, pastries etc. etc. too much sugar is definitely bad for the teeth
Fizzy drinks – again- caffeine, sugar rots internally as well as the teeth if consumed in abundance

Alcohol – contains yeast and other products which doesn’t benefit the internal body at all.

The above are some of the foods which should be omitted from you daily diet and should be replaced with good foods which are:

All green vegetables – can be either eaten raw, cooked slightly or juiced. By drinking green foods that are both abundant in chlorophyll and iron, we generate nature where iron is used resourcefully by the internal body and in fact strengthens the blood in both men and women. When you consume minerals through plants, you can never be ill with toxicity. The minerals in green vegetables will either be utilized by the body or eliminated by the body. They do not store and accumulate like synthetic minerals. There are many other benefits to drinking green juice.

Potassium is important for digestive health, chromium helps blood sugar control, and selenium aids the metabolism.
All organic fruits are rich in nutrients and their properties are fantastic for our internal body.

Organic fish and chicken (no red meat!)

Sprouts and seeds are living foods – as they are eaten raw and are a powerhouse of nutrients, packed with antioxidants, vitamins, minerals, trace elements, anti-aging constituents and enzymes. Eating sprouts regularly can produce in an enormous improvement in your general health and also boosting your immune system. Seeds (sesame, pumpkin, sunflower seeds)

All this will enhance your health and wellbeing and also make your body temple work better and improve your overall health. Its up to you to want to make that change.

Do you want to learn more about how I shrunk my fibroids? I have just completed my brand new guide to shrinking fibroids:

Download it for free here: Shrinking Uterine Fibroids

Author: Dee Francis
Article Source: EzineArticles.com
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