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Tag: "examines" at biology news

Confidence in memory performance helps older adults remember

...nitive functioning and a low sense of control, and examines whether the relationship between control beliefs and memory performance varies for young, middle-aged, and older adults and whether using mnemonic strategies influences memory performance. "One's sense of control is both a precursor and a consequen...

Avian flu modeled on supercomputer, explores vaccine and isolation options for thwarting a pandemic

... 11. The large-scale, stochastic simulation model examines the nationwide spread of a pandemic influenza viru...81 million people over the course of 180 days, and examines the impact of interventions, from antiviral therapy to school closures and travel restrictions, as t...

How can identical twins be genetically different?

... the disease. This is the first report for RA that examines gene expression patterns in monozygotic twins. "This is the crux of the issue we are trying to address in RA -- how two patients can have the same genes but different disease outcomes. Identical twins represent the best experimental system to addre...

Many cleaners, air fresheners may pose health risks when used indoors

...oducts under typical indoor use conditions, and it examines the potential hazards of small-scale yet widespread utilization of an array of products designed for household use. "We've focused a lot of effort in the last decades on controlling the big sources of air pollution and on the chemicals in consumer p...

It's all in the genes

... Whitham said. A parallel study in Australia that examines the eucalyptus tree as the foundation species is yielding the same results as the studies on cottonwoods. And Whitham has just returned from South Africa and Borneo in Southeast Asia, where he is planting the seeds for further study. ...

Failure of 'scout cells' may lead to cancer in transplant patients

...ate. The study by VanBuskirk and her colleagues examines two types of immune cells: cells that act as scouts scientists call them antigen-presenting cells and memory T cells. Scout cells detect the presence of viruses and other invaders and alert the immune system to the infection. Memory T cells are im...

Save the whales? Sure, but how many?

...New York-based Wildlife Conservation Society (WCS) examines the current hodgepodge of population target levels (PTLs) being used by wildlife managers, and proposes a simpler, four-tiered system to measure conservation success. The paper cataloged 18 different approaches currently used to set PTLs, and showed...

China's environmental challenges

...plans. One of the review articles in the issue examines the phenomenon of so-called city clusters in China, which, in contrast to the United States, tend to be much more concentrated and densely populated with little room for natural areas. In the city of Guangzhou, for example, space between residential...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...al hypoxic tolerance in diving birds and mammals," examines how diving birds and seals preserve brain cell function in the face of oxygen deficits. The study is by Folkow, Stian Ludvigsen and Blix, of the University of Tromsø and Jan-Marino Ramirez of the University of Chicago. Shivers produce warmth ...

Does a peptide affect the heart's response to social isolation?

...pathetic regulation of the heart). This study examines whether oxytocin plays a role in the heart’s detrimental responses to social isolation. The Study: Summary of Methodology Adult female prairie voles were placed under anesthesia and implanted with wireless, radio frequency transmitters. The an...

Trusting your instincts leads you to the right answer

...onscious or top-down part of cognition engages and examines whether the candidate really is the target or not. If the target is not distinctive enough in the 'eyes' of the conscious, failure of identification can occur." ...

Scientists discover new, readily available source of stem cells

...imens obtained for amniocentesis, a procedure that examines cells in this fluid for prenatal diagnosis of certain genetic disorders. Similar stem cells were isolated from "afterbirth," the placenta and other membranes that are expelled after delivery. Atala said a bank with 100,000 specimens theoretically...

Paper challenges 1491 Amazonian population theories

...more.' The archaeologists will say this study only examines two districts." Bush himself calls the paper, co-authored with Claudia Listopad, William D. Gosling, and Christopher Williams of Florida Tech, Paulo E. de Oliveira of Universidade do Guarulhos in Brazil, Miles R. Silman and Carolyn Krisel of Wake ...

Tissue engineered scaffolding allows reproduction of cartilage tissue

A new study examines the use of tissue-engineered scaffolding made of cartilage cells, which have a limited ability to heal naturally, to replace defective cartilage tissue. Cartilage cells are extracted and seeded to the scaffold which is implanted into the body, where ...

Restricting hospital-based services during SARS outbreak had modest impact

...ated Public Health commentary, Dr. Richard Schabas examines Canada’s new Quarantine Act and argues that it would be useful in only very limited circumstances....

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