Strongest metal is Tungsten. Tungsten (W, "Wolfram") comes from a Swedish word, tung sten, meaning "heavy stone".
Tungsten has the highest melting temperature of any metal. Its temperature can be raised to the point where it glows with a white light. Most other metals vaporize before they can produce much light.
Melting Point: 3422 C or 6192 degrees Fahrenheit
www.mouthpower.org . It provides you with an interactive game/education tool. Its target group ranges from elementary school to high school. Hey! Even adults can learn from it :) If you suspect that your kid is starting to smoke check out my favorite part, when Mouthy starts smoking. Click on tobacco section of the game, and watch what happens to his teeth and the rest of the mouth. Don’t forget to see the list of chemicals that goes into tobacco.
Something to think about; Formaldehyde, substance in tobacco, is what cadavers are covered in for preservation.
Second most common (chronic) skin malignancy, after basal cell carcinoma. Arises on sun-exposed skin in the setting of a previously existing actinic keratosis. Prognosis is usually good. These lesions metastasize only 1-3% of the time and are usually curable by surgery if caught soon enough.
Most common skin malignancy, related to chronic sun exposure, it can occur on any part of the body, mostly the face. Patients are usually over 40 years of age and have fair skin. Most basal cell carcinomas arise in the head and neck area, particularly the facial skin.
It grows slowly, it is firm, with translucent papule on the skin with associated telangiectasia (small, dilated surface capillaries). The center of the lesion is typically depressed, and may ulcerate occasionally. Metastasis is rare. Although prognosis is usually good, death may result from invasion of vital structures by the tumor due to neglect of the lesion by the patient.
Sources: Essentials of Pathology For Dentistry. R.F.T McMahon. P. Sloan.
It is now the most common acute skin malignancy, and it is the deadliest. Melanoma occurs in fair-skinned adults, and is usually associated with a history of acute sun damage. Because melanoma is a cancer it has the tendency to metastasize, meaning it can move to different parts of the body. Unfortunately incidence of melanoma has been increasing exponentially during the past few decades, with the lifetime odds of a Caucasian person in the US developing one of these lesions at less than 1 in 100.
Clinical features: Everyone should know the ABCD’s of melanoma:
A = asymmetry
B = border irregularity
C = color variation
D = diameter greater than 6 mm (the width of the eraser on the end of a pencil)
This type of cancer tends to occur on the back in men and on the legs and trunk in women. Occasionally they can be seen on the facial skin, and lips. (use chopstick with SPF 15 or above).
Treatment: surgical excision
Prognosis: depends directly on the depth of invasion.The overall death rate from melanoma has been decreasing, despite the increase in its incidence. American Cancer Society’s public education program urges people to seek care if they notice an unusual change in a mole. As a result, more melanomas are being detected at an earlier stage, and the chances for a cure are greatly increased.
sources: Essentials of Pathology for Dentistry. R. F. T McMahon P. Sloan. Dr. Kalmar DDS. Pathology 240.
There are two types of ultraviolet rays, UVB and UVA. One easy way of remembering the Ultraviolet B is that it is the Burning type, this light is responsible for suntans as well as sunburns. Ultraviolet A rays are even more dangerous because they penetrate into the deeper layers of skin and contribute to premature aging of skin, with development of fine lines and wrinkles. Both of the rays can cause skin cancer such as basal cell carcinoma, squamous cell carcinoma, and melanoma. UVB rays are more active and cause more damage during the summer months especially during midday, between 1-4PM. UVA on the other hand are active all year round in any weather and all day long. Unlike the UVB, UVA lights are not filtered through window glass. So your skin is getting damaged even when you are sitting inside a car on a cloudy day :(. Which means that even if you don’t go to a beach every summer and stay inside closed windows your skin can still age prematurely without protection.
How Can You Protect Yourself From The Damaging Effects Of UVB and UVA.
Most of us have heard the term SPF(sun protection factor) many times. However, the SPF only measures the protection against UVB and not UVA (because UVA rays were once thought to be safe). When you are buying a sun screen it is a good idea to look for these chemicals in a product; Parsol 1789 (avobenzone) which is a chemical blocker, or Microfine Zinc Oxide or Microfine Titanium Dioxide, which are physical blockers.
Sources: Eastside Dermatology, Alan J. Parks, MD, Stephanie L. Cotell, MD. (BCD)
Aspartame is a sugar substitute found in sweeteners such as NutraSweet, Equal, Spoonful, and Equal-Measure. It is also found in many diet drinks: Diet Pepsi, Diet Coke etc.,which hits closer to home, because I drink Diet Pepsi almost everyday.
I used to think it is better to drink Diet Pepsi than regular sugar containing Pepsi for a few big reasons, number one being the fact that a can of Pepsi contains 10 spoons of sugar. Too much sugar equals to FAT and eventually very possibly Diabetes. One can of Pepsi is about the Recommended Daily Intake, and considering that most of what people eat has some sort of simple sugars in their diets, 10 spoons of sugar in one can is ALOT.
So why is it better to drink Pepsi vs Diet Pepsi? Because of the sugar substitute Aspartame. If you really can’t stay away from diet drinks then Diet Pepsi containing SPLENDA (sugar alcohol) would be a better choice.
A few of the documented symptoms listed as being caused by aspartame include: headaches/migraines, dizziness, seizures, nausea, numbness, muscle spasms, weight gain, rashes, depression, fatigue, irritability, tachycardia, insomnia, vision problems, hearing loss, heart palpitations, breathing difficulties, anxiety attacks, slurred speech, loss of taste, tinnitus, vertigo, memory loss, and joint pain.
Is that about enough?
Read more if you want the details.
Largest Cargo Planes: Aircraft are usually ranked by weight, the maximum takeoff weight in particular. The world’s largest plane is the Antonov An-225 Mriya built in Ukraine when it was part of the Soviet Union. It’s maximum takeoff weight is over 1.3 million pounds (600,000 kg). It is commercially available for carrying ultra-heavy and oversize freight, up to 250,000 kg (550,000 lb) internally or 200,000 kg (440,000 lb) on the upper fuselage. Cargo on the upper fuselage can be 70 m long. A second An-225 was partially built during the late 1980s for use by the Soviet space program. Following the collapse of the Soviet Union in 1990 and the cancellation of the Buran space program, the second An-225 was placed in storage.
Largest Commercial Plane: The Boeing 747, it can carry about 400 passengers on intercontinental flights. The 747 will not retain its title for long, however, since the new Airbus A380 will carry over 550 passengers and have a takeoff weight over 1.23 million pounds (560,000 kg).
First Fastest Airplane: The Tupolev Tu-144 was the first commercial airplane to exceed Mach 2. In 1969, July 15th, this supersonic transport aircraft became the fastest commercial airline ever. In the sixties the engineers of the British/French “Concorde” and the Russian Tupolev TU-144 were competing for first place in getting a supersonic commercial plane airborne. On December 31, 1968 the first prototype of the Tupolev TU-144 took flight, before the Concorde did. After two severe crashes the flights were discontinued. The last regular flight of a Tu-144 took place on June 1, 1978. Tupolev Tu-144 was nicknamed Concordski, which sounds like a Russian surname, but very similar to Concorde. The only Tu-144 on display outside the former Soviet Union was acquired by the Auto & Tech Museum in Sinsheim, Germany, in 2001 and that’s where it now stands, in its original Aeroflot livery, on display next to an Air France Concorde.
Extreme Aircraft To be continued ….
“The eighth annual Back-to-School Campaign is underway. Get involved to help demonstrate demand for the State Children?s Health Insurance Program (SCHIP) and get eligible, uninsured kids enrolled!”
See What’s Happening To date, more than 4,000 events and activities have been planned in all 50 states and the District of Columbia as part of the eighth annual Back-to-School Campaign. Check out our events map to see what?s happening near you.
Yes, sleep. How often have you tried to stay awake for nearly 24 hours? Maybe to work, study for an exam, to finish a project, or just having fun partying with friends. No matter the reason sleep deprivation is a big risk, both for your health and your environment.
Twenty-four hours without sleep can produce as much impairment as being legally drunk.
As I was looking through www.howstuffworks.com I came across an interesting article. How Can Someone Stay Awake for 11 Hours? A man in Cornwall, England, actually went 11 consecutive days without a wink of sleep.
The Guinness Book of World Records no longer acknowledges sleep deprivation attempts because they feel that they’re too dangerous. In 1964 the record of 274 hours without sleep was set. This record was in the Guinness Book until they removed the category entirely in1989
Consequently, sleep deprivation is a major contributor to auto accidents and may have contributed to disasters such as the explosion at Chernobyl and the Exxon Valdez crash. Sleep deprivation is also a major concern for people working long hours (such as doctors and night shift employees) and for anyone suffering from sleep apnea, which causes high blood pressure, stress and low oxygen levels in the blood. Repeated sleep deprivation can increase your appetite and lead to weight gain.
Long-term sleep deprivation can cause vision problems, hallucinations, paranoia, mood swings, difficulty communicating or understanding others, a compromised immune system and depression.
www.howstuffworks.cm article by Jacob Silverman.