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Portable X-Ray Source Invented at MU Could Put Medical Diagnosis and Terrorism Prevention in the Palm of the Hand

The inexpensive device could improve health in the developing world and reduce mining risks

COLUMBIA, Mo. — The hand-held scanners, or tricorders, of the Star Trek movies and television series are one step closer to reality now that a University of Missouri engineering team has invented a compact source of X-rays and other forms of radiation. The radiation source, which is the size of a stick of gum, could be used to create inexpensive and portable X-ray scanners for use by doctors, as well as to fight terrorism and aid exploration on this planet and others.

“Currently, X-ray machines are huge and require tremendous amounts of electricity,” said Scott Kovaleski, associate professor of electrical and computer engineering at MU. “In approximately three years, we could have a prototype hand-held X-ray scanner using our invention. The cell-phone-sized device could improve medical services in remote and impoverished regions and reduce health care expenses everywhere.” (more…)

Genes and obesity: Fast food isn’t only culprit in expanding waistlines — DNA is also to blame

Health

Researchers at UCLA say it’s not just what you eat that makes those pants tighter — it’s also genetics. In a new study, scientists discovered that body-fat responses to a typical fast-food diet are determined in large part by genetic factors, and they have identified several genes they say may control those responses.

The study is the first of its kind to detail metabolic responses to a high-fat, high-sugar diet in a large and diverse mouse population under defined environmental conditions, modeling closely what is likely to occur in human populations. The researchers found that the amount of food consumed contributed only modestly to the degree of obesity. (more…)

Searching for the Lost Royal City of Nubia in Northern Sudan

Culture, Science

ANN ARBOR — Geoff Emberling is doing what few archaeologists do anymore in a world that has been worked over pretty well by picks, trowels and shovels. He’s searching for a lost royal city. (more…)

Born to Lead? Leadership Can be an Inherited Trait, Study Finds

Politics, Science

Genetic differences are significantly associated with the likelihood that people take on managerial responsibilities, according to new research from UCL (University College London).

The study, published online in Leadership Quarterly, is the first to identify a specific DNA sequence associated with the tendency for individuals to occupy a leadership position. Using a large twin sample, the international research team, which included academics from Harvard, NYU, and the University of California, estimate that a quarter of the observed variation in leadership behaviour between individuals can be explained by genes passed down from their parents. (more…)

Nanopore Sequencing: DNA Prefers to Dive Head First into Nanopores

Science

In the 1960s, Nobel laureate Pierre-Gilles de Gennes postulated that someday researchers could test his theories of polymer networks by observing single molecules. Researchers at Brown observed single molecules of DNA being drawn through nanopores by electrical current and figured out why they most often travel head first.

PROVIDENCE, R.I. [Brown University] — If you want to understand a novel, it helps to start from the beginning rather than trying to pick up the plot from somewhere in the middle. The same goes for analyzing a strand of DNA. The best way to make sense of it is to look at it head to tail.

Luckily, according to a new study by physicists at Brown University, DNA molecules have a convenient tendency to cooperate. (more…)

Credit Card Debt: Younger People Borrow More Heavily and Repay More Slowly, Study Finds

Economy

COLUMBUS, Ohio – Younger Americans not only take on relatively more credit card debt than their elders, but they are also paying it off at a slower rate, according to a first-of-its-kind study.

The findings suggest that younger generations may continue to add credit card debt into their 70s, and die still owing money on their cards.

“If what we found continues to hold true, we may have more elderly people with substantial financial problems in the future,” said Lucia Dunn, co-author of the study and professor of economics at Ohio State University. (more…)

Better Way to Understand Plasmid Cloning from AddGene

Science

Medical research has been studying molecular cloning for centuries. While many remember the Scottish lambs as the first successful cloning, there have been countless medical advances since then. Many of them are not as evident or dramatic as Molly the sheep, they have been blazing the trail for cloning vital organs, DNA strands and chromosomes in hopes of curtailing or even curing the maladies that plague the human race. Plasmids are at the forefront of this research in hopes they can learn how to insert DNA strands and restructure diseases or ailments on a molecular level.

It is difficult to describe what Plasmid is exactly. Plasmid is a biologically engineered DNA strands that are meant to be used in existing organisms as well as creating new ones. There are many aspects of it used in different ways from molecule cloning, manipulating genes or advancing medical research. Plasmids are circular fragments of double-stranded DNA. Plasmids are used in DNA strands and they can be replicated independently of original chromosomal DNA that created them. While they are mainly used for studying purposes at the moment in biological laboratories, they are meant to advance medical research and hopefully be used to prolong human life. (more…)

Bing Brings More of Facebook to Search

Technology

Bing is the only search engine to bring your Facebook friends into your search. </object></div> <p><mce:script type=”text/javascript”><!– document.write(“<script type=’text/javascript’ src=’” + (window.location.protocol) + “//c.microsoft.com/ms.js’><\/script>”); // –></mce:script></p> <p><span style=”color: #000000;” _mce_style=”color: #000000;”><strong>REDMOND, Wash. — Jan. 17, 2013 —</strong> With every search that people do, Bing believes there is a person out there who can help you […]