@PublicHealth, What does skin cancer look like? ? ascleses

27 augustus 2012 Reageren uitgeschakeld

Is it true that only people with light skin get skin cancer?

No. Anyone can get skin cancer. It?s more common among people with a light (fair) skin tone, but skin cancer can affect anyone. Skin cancer can affect both men and women.

How can people with dark skin get skin cancer?

Although dark skin does not burn in the sun as easily as fair skin, everyone is at risk for skin cancer. Even people who don?t burn are at risk for skin cancer. It doesn?t matter whether you consider your skin light, dark, or somewhere in between. You are at risk for skin cancer. Being in the sun can damage your skin. Sunlight causes damage through ultraviolet, or UV rays, (they make up just one part of sunlight). Two parts of UV, UVA and UVB, can both cause damage to skin. Also, the sun isn?t the only cause of skin cancer. There are other causes. That?s why skin cancer may be found in places on the body never exposed to the sun.

How can I find skin cancer early?

• Talk with your doctor if you see any changes on your skin that do not go away within one month.
• Check the skin on all surfaces of your body, even in your mouth.
• Watch for a new mole or other new growth on your skin.
• Check for changes in the appearance of an old growth on the skin or scar (especially a burn scar).
• Watch for a patch of skin that is a different color and becomes darker or changes color.
• Watch for a sore that does not heal ? it may bleed or form a crust.
• Check your nails for a dark band. Check with your doctor if you see changes, such as if the dark band begins to spread.When skin cancer is found early, it can be treated more easily.

What does skin cancer look like?

There are many different types of skin cancer (such as melanoma and basal cell skin cancer). Each type looks different. Also, skin cancer in people with dark skin often looks different from skin cancer in people with fair skin. A change on the skin is the most common sign of skin cancer. This may be any new growth on the skin, a sore that doesn?t heal, or a change in an old growth.

If you notice a change on your skin, see your doctor. Don?t wait until the change looks like the more advanced skin cancers in these photos.

How can I protect myself from skin cancer?

Have your doctor check your skin if you are concerned about a change.
Your doctor may take a sample of your skin to check for cancer cells.

Ask your doctor about your risk of skin cancer:

• Some skin conditions and certain medicines (such as some antibiotics or hormones) may make your skin more sensitive to damage from the sun.
• Medicines or medical conditions (such as HIV) that suppress the immune system may make you more likely to develop skin cancer.
• Having scars or skin ulcers increases your risk.
• Exposure to a high level of arsenic (a poison that is sometimes found in well water or pesticides) increases your risk.

Stay out of the sun as much as you can. Whenever possible, avoid exposure to the sun from
10 a.m. to 4 p.m. If you work or play outside, then?

• Try to wear long sleeves, long pants, and a hat that shades your face, ears, and neck with a brim all around.
• Use sunscreen with a label that says it is broad spectrum or is at least SPF 15 and can filter both UVA and UVB rays.
• Wear sunglasses that filter UV to protect your eyes and the skin around your eyes.
• If you are concerned about having a low level of vitamin D from not being in the sun, talk with your doctor about supplements.

Don?t use tanning beds, tanning booths, or sunlamps.

Getagd: Huidkanker, public health, Skin cancer

Source: http://ascleses.wordpress.com/2012/08/27/publichealth-what-does-skin-cancer-look-like/

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Get Pay Day Loan Questions Clarified Here | home and family

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Source: http://colorforum.com/get-pay-day-loan-questions-clarified-here.html

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Victoria Advocate | Nonprofit to host seminar

• Originally published August 25, 2012 at 10:36 p.m., updated August 25, 2012 at 10:36 p.m.

The South Texas Society of Human Resource Management, a nonprofit organization, is hosting its first annual Human Resource Seminar from 9 a.m. to 3:30 p.m. Sept. 6 at the University of Houston-Victoria Multipurpose Room.

This is an educational seminar and is open to all human resource professionals and related fields in South Texas. The topic being discussed is "Do You Have the Right HR Tools?"

Early registration is $49. Contact Peggy Jones at pjones@vicad.com or 361-574-1276 for more information.

Source: http://www.victoriaadvocate.com/news/2012/aug/25/cn_south_texas_shrm_082612_185985/

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Kudo Metrics Uncover why it's a Found gemstone for New and old ...

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Hubble captures a collection of ancient stars

ScienceDaily (Aug. 25, 2012) ? The NASA/ESA Hubble Space Telescope has produced a beautiful image of the globular cluster Messier 56 (also known as M 56 or NGC 6779), which is located about 33,000 light years away from Earth in the constellation of Lyra (The Lyre). The cluster is composed of a large number of stars, tightly bound to each other by gravity.

However, this was not known when Charles Messier first observed it in January 1779. He described Messier 56 as "a nebula without stars," like most globular clusters that he discovered -- his telescope was not powerful enough to individually resolve any of the stars visible here, making it look like a fuzzy ball through his telescope's eyepiece. We clearly see from Hubble's image how the development of technology over the years has helped our understanding of astronomical objects.

Astronomers typically infer important properties of globular clusters by looking at the light of their constituent stars. But they have to be very careful when they observe objects like Messier 56, which is located close to the Galactic plane. This region is crowded by "field-stars," in other words, stars in the Milky Way that happen to lie in the same direction but do not belong to the cluster. These objects can contaminate the light, and hence undermine the conclusions reached by astronomers.

A tool often used by scientists for studying stellar clusters is the color-magnitude (or Hertzsprung-Russell) diagram. This chart compares the brightness and color of stars -- which in turn, tells scientists the surface temperature of a star.

By comparing high quality observations taken with the Hubble Space Telescope with results from the standard theory of stellar evolution, astronomers can characterize the properties of a cluster. In the case of Messier 56, this includes its age, which at 13 billion years is approximately three times the age of the Sun. Furthermore, they have also been able to study the chemical composition of Messier 56. The cluster has relatively few elements heavier than hydrogen and helium, typically a sign of stars that were born early in the Universe's history, before many of the elements in existence today were formed in significant quantities.

Astronomers have found that the majority of clusters with this type of chemical makeup lie along a plane in the Milky Way's halo. This suggests that such clusters were captured from a satellite galaxy, rather than being the oldest members of the Milky Way's globular cluster system as had been previously thought.

This image consists of visible and near-infrared exposures from Hubble's Advanced Camera for Surveys. The field of view is approximately 3.3 by 3.3 arcminutes.

A version of this image was entered into the Hubble's Hidden Treasures Image Processing Competition by contestant Gilles Chapdelaine. Hidden Treasures is an initiative to invite astronomy enthusiasts to search the Hubble archive for stunning images that have never been seen by the general public.

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Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/UthpnkGj-LM/120825083836.htm

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Advantages and Disadvantages of Home Based Business Franchises

With the ever increasing number of successful franchises in the market, there has been an increase in the home based business franchises as well. Well recognized businesses have introduced franchises for sale. Franchise ideas are no longer confined to just fast food chains; you can now set up these franchises at home.

While working from home, the challenge is to manage different factors in such a way that your franchise idea is a success. You would have to take a disciplined approach to manage your business from home with your existing business experience and newer technologies. One of the biggest advantages of purchasing a franchise for sale is that it allows you to work from home and you would have all the backing by the franchisor. They would usually have a successful business model which has been implemented for years and they would give you all the necessary tools, so as to help your franchise grow. You would be provided with a dedicated education program that would familiarise you with the workings of the franchise.

A home based business franchise idea through the internet is in rage these days. With the increasing reach of internet across the world, the alternative of working from home has actually been a realistic choice for a lot of people working within the online industry. Quite a few franchisors also offer online training programs, so that franchisees can learn at their own pace from the comfort of their home. There are several options available for franchises such as tutorial franchises, marketing franchises and support franchises.

So many businesses now operate from home and if you are truly interested, you may perhaps research for various opportunities available in the market. Get started with the one that truly interests you. Choose an area that you possess expertise with or have worked on the subject before. For an instance, if you have working with a cleaning agency before, it would be suggestive to get started with a cleaning franchise since you would already know how it operates.

There are numerous advantages of getting started with a home based franchise; however you must also know the disadvantages. Just like any other business, there is no fixed income here. Therefore, you must have sufficient funds, so as to sustain yourself while setting up your new business. Secondly, you need to be extremely dedicated and disciplined in your approach, which involves a lot of hard work. If you are able to overcome these basic obstacles, you would surely gain a lot of success with any home based business franchise.

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Source: http://www.simonrickett.com/advantages-and-disadvantages-of-home-based-business-franchises/

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DNA could have existed long before life itself

THE latest twist in the origin-of-life tale is double helical. Chemists are close to demonstrating that the building blocks of DNA can form spontaneously from chemicals thought to be present on the primordial Earth. If they succeed, their work would suggest that DNA could have predated the birth of life.

DNA is essential to almost all life on Earth, yet most biologists think that life began with RNA. Just like DNA, it stores genetic information. What's more, RNA can fold into complex shapes that can clamp onto other molecules and speed up chemical reactions, just like a protein, and it is structurally simpler than DNA, so might be easier to make.

After decades of trying, in 2009 researchers finally managed to generate RNA using chemicals that probably existed on the early Earth. Matthew Powner, now at University College London, and his colleagues synthesised two of the four nucleotides that make up RNA. Their achievement suggested that RNA may have formed spontaneously - powerful support for the idea that life began in an "RNA world".

Powner's latest work suggests that a rethink might be in order. He is trying to make DNA nucleotides through similar methods to those he used to make RNA nucleotides in 2009. And he's getting closer.

Nucleotides consist of a sugar attached to a phosphate and a nitrogen-containing base molecule - these bases are the familiar letters of the genetic code. DNA nucleotides, which link together to form DNA, are harder to make than RNA nucleotides, because DNA uses a different sugar that is tougher to work with.

Starting with a mix of chemicals, many of them thought to have been present on the early Earth, Powner has now created a sugar like that in DNA, linked to a molecule called AICA, which is similar to a base (Journal of the American Chemical Society, doi.org/h6q).

There is plenty still to do. Powner needs to turn AICA into a base, and add the phosphate. His molecule also has an unwanted sulphur atom, which helped the reactions along but now must be removed. Nevertheless, a DNA nucleotide is just a few years away, says Christopher Switzer of the University of California, Riverside. "It's practically a fait accompli at this point."

That could have important implications for our understanding of life's origins. Prebiotic chemists have so far largely ignored DNA, because its complexity suggests it cannot possibly form spontaneously. "Everybody and his brother has been saying 'RNA, RNA, RNA'," says Steven Benner of the Foundation for Applied Molecular Evolution in Gainesville, Florida.

Conventional wisdom is that RNA-based life eventually switched to DNA because DNA is better at storing information. In other words, RNA organisms made the first DNA.

If that is true, how did life make the switch? Modern organisms can convert RNA nucleotides into DNA nucleotides, but only using special enzymes that are costly to produce in terms of energy and materials. "You have to know that DNA does something good for you before you invent something like that," Switzer says.

He says the story makes more sense if DNA nucleotides were naturally present in the environment. Organisms could have taken up and used them, later developing the tools to make their own DNA once it became clear how advantageous the molecule was - and once natural supplies began to run low.

Early organisms must have scavenged for materials in this way, says Matthew Levy of the Albert Einstein College of Medicine in New York City. "The early Earth was probably a bloody mess," he says, with all manner of rich pickings on offer.

Powner suggests another alternative. Life may have begun with an "RNA and DNA world", in which the two types of nucleotides were intermingled. Powner's co-author Jack Szostak, of the Harvard Medical School, has shown that "mongrel" molecules containing a mix of DNA and RNA nucleotides can perform some of the functions of pure RNA (Proceedings of the National Academy of Sciences, doi.org/bj8r97). Powner suggests that life started out using these hybrid molecules, gradually purifying them into DNA and RNA.

Benner says it makes more sense for the first life to have used pure DNA and RNA as early as possible. Both work better than the mongrel molecules.

Right now, though, there's nothing to tell us exactly how and when life first used DNA. "It almost becomes a choose-your-own-adventure game," says Levy.

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