Culture
WEST LAFAYETTE, Ind. - Researchers have developed a technology that detects damage to critical suspension components in military vehicles simply by driving over a speed bumplike "diagnostic cleat" containing sensors.
"Our aim is to save time and maintenance costs, but more importantly to reduce downtime by catching damage before it leads to failure in the field," said Douglas Adams, an associate professor of mechanical engineering and director of Purdue University's Center for Systems Integrity.
Purdue is working with the U.S. Army and Honeywell International Inc. to develop the technology.…
A University of Toronto research team from the Department of Chemistry has discovered useful "green" catalysts made from iron that might replace the much more expensive and toxic platinum metals typically used in industrial chemical processes to produce drugs, fragrances and flavours.
The synthesis of drugs usually relies on the use of catalysts and the expense of the catalysts influences the ultimate cost of the drug. If the catalyst is toxic, as it usually is when platinum-metals such as ruthenium, rhodium and palladium are used, then it must be removed completely from the synthesized…
SAN FRANCISCO –Adolescents and young adults typically consider peer relationships to be all important. However, it appears that strong family support, not peer support, is protective in reducing future suicidal behavior among young adults when they have experienced depression or have attempted suicide.
New research that will be presented here April 17 at the annual meeting of the American Association of Suicidology shows that high school depression and a previous suicide attempt were significant predictors of thinking about suicide one or two years later. But, those individuals who had…
According to researchers with Kansas State University's Physical Activity and Public Health Laboratory, active commuting -- walking or biking to school or work -- can be an easy, effective and efficient way to integrate physical activity into the daily routine.
Pam Wittman, a K-State senior in kinesiology, Olathe, worked with K-State's Melissa Bopp and Andy Kaczynski, both assistant professors of kinesiology, on the active commuting research. The project included two surveys, administered in 2008, which looked at demographics, psychosocial factors and environmental characteristics related to…
NASA satellite data and a new modeling approach could improve weather forecasting and save more lives when future cyclones develop.
About 15 percent of the world's tropical cyclones occur in the northern Indian Ocean, but because of high population densities along low-lying coastlines, the storms have caused nearly 80 percent of cyclone-related deaths around the world. Incomplete atmospheric data for the Bay of Bengal and Arabian Sea make it difficult for regional forecasters to provide enough warning for mass evacuations.
In the wake of last year's Cyclone Nargis -- one of the most…
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Solving the mystery of what puts sperm "in the mood"
Journal of Proteome Research
In a potential advance toward a male contraceptive pill and new treatments for infertility, researchers are reporting the identification of key biochemical changes that put sperm "in the mood" for fertilization. Their study, which addresses a long-standing biological mystery, appears in ACS' Journal of Proteome Research, a monthly publication.
Mark Platt and colleagues note in the new study that sperm cannot fertilize an egg immediately after entering the female reproductive…
Comparing different ways of solving math problems is a great way to help middle schoolers learn new math concepts, researchers from Vanderbilt and Harvard universities have found.
"We found that comparing different ways to solve a problem helped middle-school students become more flexible problem solvers and better understand the concepts behind the methods," Bethany Rittle-Johnson, assistant professor of psychology and human development at Vanderbilt University's Peabody College and co-author of the new research, said.
Rittle-Johnson and her colleague and co-author, Jon Star, assistant…
Earth's ozone layer should eventually recover from the unintended destruction brought on by the use of chlorofluorocarbons (CFCs) and similar ozone-depleting chemicals in the 20th century. But new research by NASA scientists suggests the ozone layer of the future is unlikely to look much like the past because greenhouse gases are changing the dynamics of the atmosphere.
Previous studies have shown that while the buildup of greenhouse gases makes it warmer in troposphere – the level of atmosphere from Earth's surface up to 10 kilometers (6 miles) altitude – it actually cools the upper…
BLOOMINGTON, Ind. – A team led by an Indiana University astronomer has found a sample of massive galaxies with properties that suggest that they may have formed relatively recently. This would run counter to the widely-held belief that massive, luminous galaxies (like our own Milky Way Galaxy) began their formation and evolution shortly after the Big Bang, some 13 billion years ago. Further research into the nature of these objects could open new windows into the study of the origin and early evolution of galaxies.
John Salzer, principal investigator for the study published today in…
CAMBRIDGE, Mass.--Researchers at MIT have found a novel method for etching extremely narrow lines on a microchip, using a material that can be switched from transparent to opaque, and vice versa, just by exposing it to certain wavelengths of light.
Such materials are not new, but the researchers found a novel way of harnessing that property to create a mask with exceptionally fine lines of transparency. This mask can then be used to create a correspondingly fine line on the underlying material.
Producing such fine lines is crucial to many new technologies, from microchip manufacturing that is…