Culture | Page 2677 | Science Codex

Bone-hard biomaterial

Football players, skiers, tennis players – they all fear a crucial ligament rupture. If the knee ligaments are damaged the patient usually has to undergo a surgery to restore the stability of the joint. In the surgical procedure the torn ligament is replaced by a piece of tendon from the leg, which is fixed to the bone by means of an interferential screw. The problem is that the screws are made of titanium. After a certain time the patient has to undergo a further surgery so that the material can be removed.

Toward a 3-in-1 'dipstick' test for early detection of parasitic diseases

SAN FRANCISCO, March 21, 2010 — A new simple, inexpensive three-in-one test to diagnose a terrible trio of parasitic diseases that wreak havoc in the developing world is passing preliminary tests, scientists reported here today. Described during the 239th National Meeting of the American Chemical Society the test is for Chagas' disease, leishmaniasis, and "sleeping sickness" or African trypanosomiasis.

URI pharmacy researcher finds beneficial compounds in pure maple syrup

KINGSTON, R.I. – March 22, 2010 – Before you dig in to your next stack of French toast or waffles, you might want to pour on pure maple syrup.

That's because University of Rhode Island researcher Navindra Seeram, who specializes in medicinal plant research, has found more than 20 compounds in maple syrup from Canada that have been linked to human health, 13 of which are newly discovered in maple syrup. In addition, eight of the compounds have been found in the Acer (maple) family for the first time.

Newly identified growth factor promotes stem cell growth, regeneration

DURHAM, N.C. -- Scientists at Duke University Medical Center have identified a new growth factor that stimulates the expansion and regeneration of hematopoietic (blood-forming) stem cells in culture and in laboratory animals. The discovery, appearing in the journal Nature Medicine, may help researchers overcome one of the most frustrating barriers to cellular therapy: the fact that stem cells are so few in number and so stubbornly resistant to expansion.

Failed college dreams don't spell depression, study finds

TALLAHASSEE, Fla. - High school seniors, take note: A wise person once said, "It is better to shoot for the stars and miss than aim at the gutter and hit it."

That's right on, says Florida State University Sociology Professor John R. Reynolds, who just completed a study to determine whether unrealized educational expectations are associated with depression among adults. Reynolds also is the director of the Pepper Institute on Aging and Public Policy at Florida State.

Awesome female power: Women make men throw caution to the wind

Los Angeles, CA (March 18. 2010) The presence of an attractive woman elevates testosterone levels and physical risk taking in young men, according to a recent study in the inaugural issue of Social Psychological and Personality Science (published by SAGE).

Researchers asked young adult men to perform both easy and difficult tricks on skateboards, first in front of another male and then in front of a young, attractive female. The skateboarder's testosterone levels were measured after each trick.

Financial relationships and positive results in scientific research examined

Virtually all (94%) of the scientific authors who provided positive results for the anti-diabetic drug rosiglitazone had financial relationships with pharmaceutical companies, according to research published on bmj.com today.

While the study acknowledges that financial relationships may not necessarily be the reason for positive research results, it concludes that further reform is needed to ensure trust in scientific work.

Bipolar diagnosis in children may do more harm than good

(Garrison, NY) Troubled children diagnosed with bipolar disorder may fare better with a different diagnosis, according to researchers at The Hastings Center.

The researchers support an emerging approach, which gives many of those children a new diagnosis called Severe Mood Dysregulation (SMD) or Temper Dysregulation Disorder with Dysphoria (TDD).

The findings come soon after proposed revisions to the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM) were opened to public comment.

China and India: Neighbors need to collaborate for sake of global environment

EAST LANSING, Mich. --- With large and growing economies and populations, China and India will strongly influence the quality of the global environment for years to come. While their political relationship is strained, it's critical the two countries work together to slow global warming, deforestation, water shortages and other environmental issues, says a Michigan State University scientist and colleagues.

The 'evolution' of fairness and punishment

Researchers have long been puzzled by large societies in which strangers routinely engage in voluntary acts of kindness, respect and mutual benefit even though there is often an individual cost involved.

While evolutionary forces associated with kinship and reciprocity canexplain such cooperative behavior among other primates, these forcesdo not easily explain similar behavior in large, unrelated groups,like those that most humans live in.

Tryptophan-enriched diet reduces pig aggression

Feeding the amino acid tryptophan to young female pigs as part of their regular diet makes them less aggressive and easier to manage, according to a study by Agricultural Research Service (ARS) scientists and cooperators.

Education: copying college homework significant cause of course failure nationally

LAWRENCE, Kan. — The history of students who copy homework from classmates may be as old as school itself. But in today's age of lecture-hall laptops and online coursework, how prevalent and damaging to the education of students has such academic dishonesty become?

According to research published online today in Physical Review Special Topics: Physics Education Research, unnoticed student cheating is a significant cause of course failure nationally.

Medicaid patients 5.5 times more likely to get cataract surgery than VA patients - study

INDIANAPOLIS – Patients seen at private facilities reimbursed by Medicare were more than 550 percent more likely to have routine cataract surgery than those who received their care from the Department of Veterans Affairs, a strong indication that the frequency of cataract surgery may be responsive to financial incentives to either or both the medical facility and the physicians who perform the procedure.

These findings from a large eight-year study are reported in the March 2010 issue of the American Journal of Medical Quality.

The cultural divide in our ability to recognize sensual sounds

An F1000 evaluation looks at a British study of how the six basic human emotions are universally recognized but other positive emotions are culturally specific

Humans use a wide range of different cues, both verbal and non-verbal, to share important information and particularly to warn others of danger. A team from University College London's psychology department studied a range of non-verbal emotional vocalizations, such as screams and laughs, in two very different cultural groups.

A bleak outlook for social science

London (18th March 2010) – Social science is at the center of every major challenge the world faces, yet faces a tough future, according to a panel of senior academics and politicians speaking in London this week who were taking part in a debate hosted by the British Academy and SAGE to explore how social science research can strengthen its involvement in policymaking and therefore increase its impact and, of course, protect itself from government funding cuts.