807,524 articles

World's Thinnest Balloon Developed

Researchers are reporting development of the world's thinnest balloon, made of a single layer of graphite just one atom thick. This so-called graphene sealed microchamber is impermeable to even the tiniest airborne molecules, including helium. It has a range of applications in sensors, filters, and imaging of materials at the atomic...

Psychiatrists Shift Away From Providing Psychotherapy

A declining number of office-based psychiatrists appear to be providing psychotherapy to their patients, according to a new report. Psychotherapy has been part of the practice of psychiatry for generations. Various forms of psychotherapy, either alone or in combination with medications, are recommended for the treatment of major depression, post-traumatic stress disorder, bipolar disorder and...

Arrival Method, Slow Response Often Delay Stroke Care

Most stroke patients can't recall when their symptoms started or do not arrive at the hospital in a timely manner, so they cannot be considered for time-dependent therapies such as the clot-busting drug tissue plasminogen activator (tPA), researchers reported in Stroke: Journal of the American Heart...

New Insight On HIV Transmission Risk Of Men Who Have Sex With Men

Approximately half of all new HIV infections in the United States result from the sexual risk behaviors of men who have sex with men. Now, a new study provides additional insight into which of these men are most likely to transmit HIV to others, potentially paving the way for the development of more targeted prevention...

A New Light On The Brains Of People With Borderline Personality Disorder

In a game of give and get, the brains of people with borderline personality disorder often don't get it. In fact, an interactive economic game played between two people in functional magnetic resonance imaging devices revealed a brain malfunction associated with the disorder, a serious but common mental illness that affects a person's perceptions of the world and other people, according to an...

Skipping Atomic-scale Stones To Study Some Chemistry Basics

Thought experiment: a carbon dioxide molecule—think of a cheerleader’s baton—comes slanting in at high speed over a dense liquid, strikes the surface and ricochets. How does it tumble? Fast or slow? Forward, backward or sideways? New experiments are giving a uniquely detailed look at what happens when gas molecule meets...

Floss Your Teeth -- On The Double

A recent study demonstrates that including flossing as part of one's routine oral care can actually help reduce the amount of gum disease-causing bacteria found in the mouth, therefore contributing to healthy teeth and gums.

Ricin's Deadly Action Revealed By Glowing Probes

A new chemical probe can rapidly detect ricin, a deadly poison with no known antidote that is feared to be a potential weapon for terrorists and cannot quickly be identified with currently available tests. Chemists at UC San Diego developed the probe, which glows when bound to a ricin-damaged part of the body's protein-making machinery. Because the test pinpoints the specific injury underlying the...