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Viagra (Sildenafil citrate), which millions of men take for erectile dysfunction (ED), reduces the effects of hormonal stress on the heart by half, according to a study published online in the journal Circulation. Viagra causes genital blood vessels to expand, which helps in maintaining an erection. Recent research also has pointed to its potential usefulness in treating pulmonary hypertension. Prior to the latest findings by a team of Johns Hopkins researchers, it was thought to have little effect on the heart. Viagra, or sildenafil, blunts the strengthened heart beat caused by chemically induced stress, according to study senior author and cardiologist David Kass, MD, a professor at the Johns Hopkins University School of Medicine and its Heart Institute. It thereby lessens both the excess amount of blood and the force used to pump it to the body. "Sildenafil effectively puts a 'brake' on chemical stimulation of the heart," says Kass. Prevents and Reverses Effects of High BP These findings are believed to be the first confirmation in humans that Viagra has a direct effect on the heart. In earlier research, Kass and his team observed a similar effect in mice; Sildenafil blocked the short-term effects of hormonal stress in the heart. Related studies by the group show that sildenafil also prevents and reverses the long-term effects of chronic high blood pressure on the heart. Sildenafil reversed the negative effects on heart muscle weakened by heart failure and enlargement -- a condition called hypertrophy -- in mouse experiments Kass and his team carried out earlier this year. They reported their results in the journal Nature Medicine. "But we had no firm evidence as to whether or how this therapy might work in the human heart," says Kass. "Our latest research provides firm evidence this drug does indeed have an important impact on the heart." Increased Heartbeat Was Slowed Thirty-five healthy men and women, with an average age of 30 and no previous signs of coronary artery disease, participated in the six-month Johns Hopkins study. Within a three-hour timeframe, each participant received two separate injections of dobutamine (5 micrograms per kilogram for five minutes), a synthetic, adrenaline-like chemical that increases heart rate and pumping strength. Between injections, study participants were assigned randomly to a group that was treated with sildenafil (100 milligrams taken orally) or to a group given a sugar pill placebo. All participants then were given the second dobutamine injection to see what effects sildenafil or placebo had on the heart. Measurements of heart function were made before and after each injection. These included blood pressure readings, electrocardiograms and echocardiograms. Blood samples confirmed relatively equal levels of sildenafil and other enzymes. Each dobutamine injection stimulated heart function, increasing heart rate and the force of each heartbeat used to pump blood throughout the body, results showed. "This stimulation is similar to the way the nervous system normally increases heart function when triggered by emotional or exercise stress, or in diseases such as heart failure," notes Kass. After the first injection of dobutamine, the force of heart contraction increased by 150 percent in both groups. In the placebo group, this increase repeated itself after the second injection. However, in the group treated with sildenafil, the increased heartbeat was slowed by 50 percent, resulting in a smaller increase in blood flow and blood pressure generated by the heart in response to chemical stimulation. Between injections, heart function was not altered in the sildenafil group, demonstrating the absence of adverse side effects on the resting human heart. Stops PDE5A Action "Knowing more about the effects of sildenafil on heart function will allow for safer evaluation of its use as a treatment for heart problems," says Kass. "Our results set the stage for further studies of sildenafil's immediate and long-term effects on the heart and its ability to modify other neurohormonal and stress stimuli, including adrenaline and hypertension," he adds. While the precise biological actions of sildenafil in the heart are not fully understood, the drug is known to work by stopping the action of an enzyme, called phosphodiesterase 5 (PDE5A), Kass explains. This enzyme is involved in the breakdown of a key molecule, cyclic GMP, which helps control stresses and limit overgrowth in the heart. PDE5A is also the biological pathway that sildenafil blocks in the penis to prevent the relaxation of blood vessels and thus maintain erections. Copyright 2005 Daily News Central enlargement free pnis pills sample truth about penile enlargement pills best enlagement exercise penis herbal natural pnis enlargement herbal penis enlargment pills penis enlargement surgery picture does penis elargement work permanent pennis enlargement

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Many industrial concerns have workshops of their own. For the repair of worn shafts, the lathe machine is excellent. Keyway slots can be machined by using a milling machine, while a shaping machine can do machining of large flat areas. A drilling machine does drilling of holes. A skilled Maintenance Engineer should know how to use all these machines in order to make his own repairs in a safe manner. Very often he has to supervise machinists. The information below should be useful for that purpose. Lathe Machine The lathe machine uses a single-point-cutting tool for a variety of turning, facing, and drilling jobs. Excess metal is removed by rotating the work piece over the fixed cutting tool to form straight or tapered cylindrical shapes, grooves, shoulders and screw threads. It can also be used for facing flat surfaces on the ends of cylindrical parts. The work piece is clamped onto a horizontal rotating shaft by a 3-jaw or 4-jaw chuck. The latter chuck can be used to cut off-centered cylinders. The rotating horizontal spindle to which the chuck is attached is usually driven at speeds that can be varied. The cutting tool is fixed onto a tool rest and manipulated by hand. It can also be power driven on straight paths parallel or perpendicular to the work axis. This is useful for screw cutting. Internal turning known as boring results in the enlargement of an already existing hole. The holes are more accurate in roundness, concentricity, and parallelism than drilled holes. A hole is bored with a single-point-cutting tool that feeds along the inside of the work piece. Shaping Machine The shaping machine is used to machine flat surfaces, grooves, shoulders, T-slots, and angular surfaces with single-point tools. The cutting tool on the shaper oscillates, cutting on the forward stroke, with the work piece feeding automatically toward the tool during each return stroke. Drilling Machine The drilling machine is used to cut holes in metal with a twist drill. By changing the cutting tool, they can be used to do reaming, boring, counter boring, countersinking, and threading. Milling Machine The milling machine uses a rotating cutting tool to cut flat surfaces, grooves, and shoulders, inclined surfaces, dovetails, and T-slots. Cutters of many shapes are changed to cut different grooves. Cutting Tools Metal-cutting tools are classified as single point or multiple point. The lathe and shaping machine use single point cutting tool while the milling and drilling machines use multiple-point-cutting tools. Metal is cut either by moving the work piece like in the lathe or by moving the tool like in the shaping machine, drilling or milling machine. Clearance angles must be provided to prevent the tool surface below the cutting edge from rubbing against the work piece. Rake angles are often provided on cutting tools to cause a wedging action in the formation of chips and to reduce friction and heat. Tool Materials In order to remove chips from a work piece, a cutting tool must be harder than the work piece and must maintain a cutting edge at the temperature produced by the friction of the cutting action. Carbon Steel Carbon steel tools even though comparatively inexpensive tend to lose cutting ability at temperatures around 400 degree F (205 degree C). High-Speed Steel High-speed steel, containing 18 percent tungsten, 4 percent chromium, 1 percent vanadium, and only 0.5 to 0.8 percent carbon, permits the operation of tools twice or three times the speeds allowable with carbon steel Cast Alloys Cast-alloy cutting-tool materials containing cobalt, chromium, and tungsten are effective in cutting cast iron and retaining their cutting ability even when red hot. Cemented Tungsten Carbide The hardness of Tungsten Carbide approaches that of a diamond. Tungsten carbide tools can be operated at cutting speeds many times higher than those used with high-speed steel. Oxides Ceramic, or oxide, tool tips consist primarily of fine aluminum oxide grains, which are bonded together. These are very hard. Cutting fluids An overheated tool can become blunt and soft very fast. Therefore very often, cooling fluids cools the cutting points of the tool. This serves to lubricate and cool. Water is an excellent cooling medium, but it corrodes ferrous materials. Sulfurized mineral oil is one of the most popular coolants as it can both cool as well as lubricate. The sulfur prevents chips from the work from melting on to the tip of the tool. free penis enhancement tip vig rx review vimax penis enlargement drug penis enhancement pills review vimax medical penis enlargement enargement forum free matter penis size natural penis enlarement do penile enlargement pills really work penis enargement surgery picture

There are a number of penis enlargement pills on the market from a variety of different manufacturers most of which work in much the same way. Generally penis enlargement pills work by increasing the blood flow to the penis and thus enlarging the penis size. The active component, in most penis enlargement pills, is Yohimbe which is claimed to be and aphrodisiac and generally boosts sex drive. In humans Yohimbe tends to increase the heart rate and blood flow and it is the increased blood flow to the penis that is claimed to increase the penis size. Many men who have combined taking penis enlargement pills with a natural penis enlargement program claim to have achieved the desired result in a shorter period of time. It has to be said that manufacturers of penis enlargement pills can never boast an instant result, as with most penis enlargement programs and techniques it will generally be a few months before you will start to see any benefit. Penis enlargement pills will effectively take away some of the effort applied when following a natural penis enlargement program by doing some of the work while you work, eat and sleep, thus the combined approach should deliver you a quicker result. In addition to using penis enlargement pills and techniques men can generally benefit from following a healthy lifestyle and diet. It is widely believed that smoking can physically reduce the size of a man’s penis as well as have a negative impact on sperm count and quality. In addition, those men who are clinically obese will generally see a significant reduction in the size of their penis with much of their penis hidden inside the body. It therefore goes without saying that instead of or in addition to taking penis enlargement pills or opting for any other penis enlargement techniques men should take stock of their lifestyles! There are serval well recognised penis enlargement pills which is widely used with excellent success rates including Vimax, Natural Gain Plus and Extagen. Users of the more popular penis enlargement pills claim an increase of 2-3 inches in penis size, with some achieving significantly more, and have also seen a reduction in problems with premature ejaculation and experienced a significant increase sex drive. plastic surgery pnis enlargement best penis enlargment pennis enlargement surgeries penis enlargement surgery enlargment manhattan penis surgeon top penis enhancement pills penis elargement before and after photo safe penis enlarement penis enargement surgery picture

In the United States, premature ejaculation affects about one in five men ages 18 to 59 making it the most common male sexual dysfunction. Most men try to distract themselves during sex, attempting to trick themselves into lasting longer by thinking about other non-sexual things. This works for some men, some of the time but is far from being a treatment or viable premature ejaculation cure. The obvious flaw with this technique is that it defeats the purpose of sex, which is supposed to be exciting and fun. Negative thoughts and trying to keep one's self from getting too aroused have no place in a passionate sexual experience. Besides, if your aim is to overcome premature ejaculation permanently, you need to address the problem and make the necessary adjustments to correct it. Don't try to get yourself out of the moment, instead tune into it. Now, this may sound counter-productive but once you become more aware of your different levels of sexual arousal and begin to recognize when you are approaching orgasm, it becomes easier to prolong your erection without ejaculating. Here is what you can start doing right now to prevent premature ejaculation and prolong your sexual endurance: Avoid drugs or alcoholic beverages. You need to be fully aware of the changes happening in your body if you wish to control them. Engage in full body sensuality. By pleasuring the entire body, not only will you release tension off the penis decreasing the chance of involuntary, premature ejaculation, you will also increase your partner's pleasure. Relax by allowing yourself to breath deeply during sex. Do not fight this urge by trying to restrict your breathing. This will increase your staying power. While masturbating, when you feel yourself approaching orgasm, stop and relax for about half a minute. When you feel yourself moving away from ejaculation, resume self-stimulation. Repeat this as often as you can. Avoid penile skin creams as they dull the sensation in your penis. This can make matters worse. Some time is required in order to completely stop premature ejaculation. However, anyone can master the steps above within a short amount of time with consistent practice while paying attention to the changes happening in the body. free penis enlargement pill vimax enlargement free penis pills sample truth about penile enlargement pills natural penis enlarement technique pro solution pills side effects natural penis enlarement vimax best penis enlargement surgery penis enargement pills penis enargement surgery picture

If you’re over 40, you’ve got a ticking time bomb in your backside. It’s called benign prostatic hyperplasia…or BPH for short. This is the number one problem in older men. Your prostate is normally about the size and shape of a walnut and is located at the base of your penis. It surrounds your urethra – the tube your urine flows through – and that’s exactly why it’s likely to cause you problems. As you get older, your prostate grows and begins to squeeze the urethra and obstruct normal flow. Most men’s prostates begin enlarging after 40. If you make it to eighty, you have an 80% chance of having BPH. So, what are the symptoms of BPH? • Constant urge to urinate • Frequent nighttime urination • Dribbling or leaking after urination • Difficulty starting urination • A weak stream • Never feeling the bladder is empty Factors that increase your risk The major factors that increase your risk of developing BPH include: • Your medical history • Family history • Diet • Hormone levels Prevention strategies It’s never too early to start preventing BPH…You can save yourself a lot of problems later. And if you already have the symptoms – you can keep them from getting worse. Here are some simple and easy precautions you can take right now: 1. Get enough Omega-3 fatty acids: These are the essential fatty acids in fish, eggs, nuts and flax seed oil. You can get them by eating one of these foods every day…remember most fish that provide Omega-3 are contaminated with mercury…or by taking a supplement. Studies have shown Omega-3 seems to stop the conversion of the chemical that triggers prostate growth. The recommended dose is between 3 and 6 grams a day. 2. Eat healthy: Basically, cut down on the crap … sugars, hydrogenated oils…the things that tend to cause inflammation. Get plenty of protein and veggies. And, to be safe, add a good, natural food base, multivitamin. 3. Watch your DHT levels: Most doctors will tell you that testosterone is the cause of prostate enlargement and give you treatments to reduce it. Now that’s great! The very thing that makes you male and gives you your virility is being taken away from you. Dr. Al Sears wrote, “Testosterone is one of many related steroid hormones. Several are interconverted. Testosterone, for instance, can be converted into estrogens. But testosterone can also be converted into DHT. DHT is 9 times more powerful at stimulating growth of prostate tissue than testosterone is. Testosterone maintains normal health of your prostate but DHT stimulates an overgrowth. DHT sends signals to the prostate tissue, making it swell. As the tissue swells, it impinges on the surrounding urinary and reproductive systems. (DHT is also the chemical that causes men to develop male pattern baldness.) Your body converts testosterone to DHT with an enzyme called 5-alpha reductase. Exposure to stress and steroid related toxins in the environment appear to increase the activity of 5-alpha reductase. This deals a double blow to your manhood. It robs you of testosterone and it increases DHT. But, without the presence of 5-alpha reductase, testosterone will not convert into DHT. And this is the concept behind well-designed BPH treatments. If you can block the action of the 5-alpha reductase, you can prevent and treat prostate enlargement while increasing, not lowering your testosterone. Dr. Sears goes on to say, “You can stop 5-alpha reductase from making DHT with natural supplements. The best inhibitors of 5-alpha reductase come to us in the form of plant sterols. I’ve talked about some of these supplements before. Saw palmetto, pygeum, and pumpkinseed are the “big three”. 4. Get a regular exam: BPH and the worst case, prostate cancer aren’t something to fool around with. Especially if you’re over 40, you should see your doctor for a prostate check-up once a year. Include hormone blood tests, physical exam, and a comprehensive PSA test in your routine.