750,932 articles

Raising the Bar on Biomass

Based on an exhaustive review of the science on biomass power, Massachusetts regulators say they are revamping their requirements for biomass power projects hoping to take advantage of renewable energy incentives....

NSA's 'Perfect Citizen' Will Watch for Cyberattacks

With cyberattacks on key American institutions and businesses becoming more common, the National Security Agency (NSA) is launching a major program to detect assaults on the nation's infrastructure. The program, called Perfect Citizen, will focus in its first phase on the most obvious, biggest holes in security in legacy systems. According to The Wall Street Journal, Perfect Citizen, funded...

A chemical to make brain cells grow: Mental decline thwarted in aging rats

Scientists have discovered a compound that restores the capacity to form new memories in aging rats, likely by improving the survival of newborn neurons in the brain's memory hub. The research, funded in part by the National Institutes of Health, has turned up clues to a neuroprotective mechanism that could lead to a treatment for Alzheimer's disease.

A research study analyzes the disclosure of corporate press releases

The decision to emit a press release to inform about the annual financial report of a company does not depend on its economic performance, contrary to what one would think, according to research being carried out at Universidad Carlos III de Madrid, which analyzes these types of communiques in Spain and the United Kingdom.

Better-looking politicians get more media coverage

The better a politician's looks, the higher the frequency of television news coverage, shows a new study carried out at the University of Haifa's Department of Communication, published in the International Journal of Press/Politics. "Earlier studies have shown that people generally tend to prefer the company of people who are physically attractive and even value them as more worthy people. Our...

Biologists find a way to lower tumor risk in stem cell therapies

One of the characteristics of embryonic stem cells is their ability to form unusual tumors called teratomas. These tumors, which contain a mixture of cells from a variety of tissues and organs of the body, are typically benign. But they present a major obstacle to the development of human embryonic stem cell therapies that seek to treat a variety of human ailments such as Parkinson's, diabetes,...

Electronic health records prime clinicians to provide progressive care to older adults

In 20 years, approximately 72 million older adults will reside in the United States, almost double the current number, according to the U.S. Administration on Aging. Potential issues are compounded by the projected shortage of health care workers needed to provide elder care. As part of the solution, an interdisciplinary team of University of Missouri researchers is refining electronic health...

Endoscopic ultrasound evaluation is associated with improved outcomes in pancreatic cancer patients

A new study has found that endoscopic ultrasound (EUS) is associated with improved outcomes in patients with localized pancreatic cancer, possibly due to the detection of earlier cancers and improved stage-appropriate management, including more selective performance of curative intent surgery. This is the first study to analyze a large population-based cancer registry and demonstrate that EUS...

Explained: Phonons

For the engineers who design cell phones, solar panels and computer chips, it`s increasingly important to be able to control the way heat moves through the crystalline materials - such as silicon - that these devices are based on. In computer and cell-phone chips, for example, one of the key limitations to increasing speed and memory is the need to dissipate the heat generated by the chips.

Gene knockout makes female mice masculine

The mammalian fucose mutarotase enzyme is known to be involved in incorporating the sugar fucose into protein. Female mice that lack the fucose mutarotase (FucM) gene refuse to let males mount them, and will attempt copulation with other female mice. Researchers writing in BioMed Central's open access journal BMC Genetics created the FucM mouse mutants in order to investigate the role of this...

Housing upgrade shrinks tumors in mice with cancer

When mice with cancer get a boost in their social life and an upgrade in living conditions, their tumors shrink, and their cancers more often go into spontaneous remission Reported in the July 9th issue of the journal Cell, these findings offer powerful new evidence of the critical role that social connection and an individual's mental state, may play in cancer.

HPV DNA testing over 50 percent more sensitive than cytology testing

HPV DNA testing for precancers and cervical cancers is over 50 per cent more sensitive than cytology testing for the same conditions a community-based study in Mexico has revealed. Results of the largest HPV DNA primary screening study ever to be performed in a Latin American country point to the readiness of HPV DNA testing for large-scale implementation in Mexico and are published online today...

Hydrogen distribution not an option in biomass gasification

When using fuel cells to generate electricity from biomass, the best approach is to do so centrally, in combination with a gas turbine. The production and subsequent distribution of hydrogen is an inefficient process. This is the view of Richard Toonssen, who will defend his doctoral dissertation on this subject at TU Delft in the Netherlands on Thursday 8 July.

Is biopsy avoidable on diagnosis of celiac disease?

A research team from Argentina explored the accuracy of all available serological markers in diagnosing the disorder in the theoretical context of avoiding the invasive intestinal biopsy. They found that the DGP/tTG Screen assay was the best initial test for suspected celiac disease. Combinations of assays might be able to diagnose celiac disease accurately, avoiding biopsy in almost 92 percent of...

New approach helps teachers integrate conservation biology into high school ecology classes

Framing familiar environmental issues in everyday language -whether the topic is a Gulf Coast oil spill or the spread of Lyme disease -may be the key to successfully engaging high school students with conservation biology research in their ecology classes. A study, presented in the latest issue of Conservation Biology by Yael Wyner, an assistant professor at the City College of New York, and Rob...

New kids on the block

The negotiating styles of the world`s biggest rising powers - China, India and Brazil - could offer important clues about any future challenge they may pose to international stability, a new study suggests.

Novel ion trap with optical fiber could link atoms and light in quantum networks

Physicists at the National Institute of Standards and Technology have demonstrated an ion trap with a built-in optical fiber that collects light emitted by single ions (electrically charged atoms), allowing quantum information stored in the ions to be measured. The advance could simplify quantum computer design and serve as a step toward swapping information between matter and light in future...

One in five preschoolers in the US demonstrates mental health issues when entering kindergarten

Social competence and behavior problems that are evident at kindergarten and first grade are known to be strong predictors of a child's academic and social functioning. However, findings reported in the July issue of the Journal of the American Academy of Child and Adolescent Psychiatry suggest that psychosocial risk factors can be identified even earlier and can be observed during the transition...

Perfusion CT may be used as a noninvasive tool in detection of hepatic toxicity

A research team from China investigated the microcirculation changes in liver of patients with tumor during chemotherapy by perfusion computed tomography (CT). Their study suggested that chemotherapy affects hepatic microcirculation in patients with tumor. Changes in hepatic microcirculation can be quantitatively assessed by perfusion CT.