Writing Feedback / What the West's Ancient Droughts Say About Its Future [4]

The article written by Lisa M. Krieger elaborates relating to lesson from california's ancient drought. Most of modern Californians facing frightening question toward the recent dry spell in California. Is the drought caused by an aberration or it could be a signal of mega drought that occurred several decades ago. Scientists have tendency to keep of the related question. According to several evidence that is measured in centuries, however, scientists agree that California is more vulnerable to drought. The most valid evidence is tree rings. The varying widths of the trees represent that a wide range of prejudicial dry spells gripped the west in the late 1500s. Other predominant study lead by Edward Schulman using tree rings in the 1940s found sustained period of low flow in Colorado river. Some scientist believe that megadrought returned in 21 century. Bill Patzert has identified the temperature of Pacific Ocean that contrive a ridge of high pressure over California to Alaska and freezing cold to the eastern United States. As a result, this phenomenon has significant ramifications such as more wildfires, wells go dry, field would go fallow, less water for agriculture, cities and wildlife.

news.nationalgeographic.com/news/2014/02/140214-drought-california-prehistory-science-climate-san-francisco-2/

Writing Feedback / A smarter, more precise way to think about public health [4]

The presented video lectured by Sue Desmond Hellman highlights information relating to smart way to think about public health. Sue had painful experience which lead her carrier to contrive precision public health. The story begun when she had detected bad effect of her treatment for breast cancer patient. The remedies could not distinguish between the health cell that is needed to preserve and ill cell that are supposed to kill. Subsequently, she found Herceptin to kill the biomarker, and it kept healthy cell alive. Precision medication was the answer to overcome her problem. She broadened horizon by using precision principal to tackle severe disease in several developing countries. She conducted her project by investigating a wide range of women who lost their children before 28 days in Africa due to HIV/AIDS. According to her research, she concluded that staphylococcus aureus is the main cause of HIV/AIDS transference from mothers to her babies. Using penicillin is the effective way to kill precisely the bacterium. Another studied that he did over the last 5 years is to promote early screening for pregnant women. The result showed that number of HIV/AIDS transference declined significantly by using her method.

ted.com/talks/sue_desmond_hellmann_a_smarter_more_precise_way_to_think_about_public_health

Writing Feedback / Stem cell brain injections let people walk again after stroke [4]

newscientist.com/article/2091841-stem-cell-brain-injections-let-people-walk-again-after-stroke/

This article highlights information relating stroke sufferer recovery by injecting stem cell stem. According to recent study, conclude researcher, result showed that participants demonstrated remarkable effect by walking again after receiving injections of stem cell into brains. Subsequently, this method also contribute to enhance communication ability, strength, and motoric ability especially to coordinate their hands. The primary principle of this method had been adapted from 'baby steps' process. Injection used main material called as mesenchymal stem cell. The material was engineered to stimulate secreting of growth factors that contrived connection between brain cell and created new blood vessels to nourish growing brain tissue. The manipulation of stem cell called Notchl, which predominant factor to develop brain in infants. Fruitfulness of stem cell method became overwhelming news for stroke sufferer as main treatment to recovery their ability. Recently, plenty of cell stem researcher develop the further trials to study about the right dose of cell, and the right means of delivery. They also take into account to devote extra evidence.

Writing Feedback / Promising test for pancreatic cancer from a teenager [2]

ted.com/talks/jack_andraka_a_promising_test_for_pancreatic_cancer_from_a_teenager

The presented video in TED.COM lectured by Jack Andraka highlights information relating test for pancreatic cancer from teenager. Jack Andraka is an investor of early pancreatic cancer detection. He interested in pancreatic cancer due to the painful experience. Non-invasive, simple, rapid, sensitive, and inexpensive, for instance, are the main principal procedure used by him to contrive his pancreatic cancer detector. He attempt to figure out amount of proteins that have direct correlation with pancreatic cancer. He found nearly 8,000 proteins in pancreatic cancer. Subsequently, he analyses meticulously to find the biomarker of pancreatic cancer. Eventually, after 4,000 trials he discovered the significant protein for pancreatic cancer. It is extremely small molecule which people called as mesothelin. Mesothelin leads his way to find out profoundly about pancreatic cancer detector. Then he found the predominant factor to make its protein react. Antibody is a molecule which will react with specific molecule. He use that materials to contrive pancreatic cancer test. According to the experience, he conclude that his invention is 168 times faster, over 26,000 less expensive, and over 400 times more sensitive than current standard.