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Tag: "bias" at biology news

HIV-1 spread through six transmission lines in the UK

...nce of older strains could also reflect a sampling bias in this study. ...

Small species back-up giant marsupial climate change extinction claim

...s well established. Closer examination revealed a bias in sample collection in favour of larger animals and there had been few attempts to document ecological and sediment data. "Our samples show that species dependent on habitats such as woodlands and vine thickets dominate the lowest section of the tr...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...erceive with limited spectra and sensory modes. We bias research with the unconscious and incorrect assumption that other animals 'see' the world as we do. Every time we discover otherwise, it expands the horizons of scientific knowledge and sends us the humbling and vital message that we are not, after a...

The lopsided brain: Attention bias is shared by humans and birds

...right hemisphere can experience a much more severe bias in their spatial attention--spatial hemineglect--i...ght side of her drawing. The more subtle leftward bias in attention present in healthy humans likely has to do with asymmetries in the wiring of the brain'...

Mother birds increase progesterone to hatch females

...and the mechanism that several bird species use to bias the sex ratios of their offspring toward female. ...hink that birds such as the Seychelles warbler may bias the sex of their offspring when, for example, their territory has plenty of food and the mother bird...

Radio-tracking associated with 'dramatic shift' in water vole sex ratio

...s of suboptimal habitats, similar to the sex-ratio bias and stress response in food deprived water voles," they say. Researchers have long been aware that the techniques they use had the potential to cause unexpected effects, and there have been many studies into the effects of radio-collars. However, th...

Certain fish have a special mating preference

...that evolutionarily exploit a pre-existing sensory bias in females," he said. "That is, male ornamentation of the tail fin may have evolved largely due to the pre-existing preference for an elongate structure of a similar shape -- the gonopodium." ...

IMF Launches World’s First DNA Database for Myeloma Patients

...that evolutionarily exploit a pre-existing sensory bias in females," he said. "That is, male ornamentation of the tail fin may have evolved largely due to the pre-existing preference for an elongate structure of a similar shape -- the gonopodium." ...

Understanding biases in epidemic models important when making public health predictions

... make implicit assumptions that may systematically bias their predictions, say researchers at the Universi...nza outbreak were used to illustrate the potential bias in model predictions. The impact of such differences on predicting the spread of new, highly transm...

Scalpel-free surgery could reduce risk of HIV and hepatitis exposure for health care workers

...asured within a community, bypassing the selection bias of traditional statistics of known infected patients presenting to primary care clinics. Furthermore, the authors report that blood-borne pathogens are associated with certain types of operations. The researchers also found that the operations assoc...

Inhaling large amounts of salt can cause hypertension

... make implicit assumptions that may systematically bias their predictions, say researchers at the Universi...nza outbreak were used to illustrate the potential bias in model predictions. The impact of such differences on predicting the spread of new, highly transm...

Field of beams - Novel system uses polarized light pulses to reveal crop health

... make implicit assumptions that may systematically bias their predictions, say researchers at the Universi...nza outbreak were used to illustrate the potential bias in model predictions. The impact of such differences on predicting the spread of new, highly transm...

Men Estimate Men's Risks Of Common Disorders Higher Than Women Do, And Vice Versa

...of questions is neither an optimistic nor negative bias for one's own sex, but rather a bias towards thinking any health experience, whether positive or negative, is more probable for one's own...

'Punctuated' evolution in the human genome

...ctivity. This is the first time that such temporal bias has been documented for DNA duplications, and it challenges the evolutionary paradigm that continuous alterations occur during the course of genome evolution. The scientists, who are affiliated with the University of Washington (Seattle, WA), Case W...

Cultural norms not unique to human societies

...n human and chimpanzee societies." The conformity bias finding was an unexpected, but equally important, result of this culture study, according to Dr. Horner. A few members of each group independently discovered the alternative method for freeing food from the Pan-pipes, but this knowledge did not endan...

Computers close in on protein structure prediction

...considered to be the highest standard for removing bias from protein structure prediction models. "We can't compute the energies perfectly, but the biggest problem is the search through possible shapes," Baker said. "Where we were not getting the right answer on the computer, it was almost always the cas...

Firefly protein lets researchers monitor molecule linked to cancer

...or individual variances that could inappropriately bias the results. Gross S, Piwnica-Worms D. Real-time imaging of ligand-induced IKK activation in intact cells and in living mice. Nature Methods, August 2005. Funding from the National Institutes of Health. ...

ASU researchers 'wire' DNA to identify mutations

...ion. From one electrode tip, a small current, or bias is used to probe the internal electronic states of DNA. By measuring the conductance, the team was able to understand the sequence information in the DNA and whether there was a mismatch in comparison to a normal DNA sequence. What they found was t...

Evidence for omega 3 fats less conclusive than we thought, say experts

...diovascular events. The few studies at low risk of bias were more consistent, but they also showed no effect of omega 3 on total mortality or cardiovascular events. When data on long chain omega 3 fats were analysed separately, total mortality and cardiovascular events were not reduced. No study showed i...

New nano-canary in the nanotoxicology coalmine: The body itself

...articles that mediate biological activity, without bias of what that biological activity represents. The PNNL scientists are also developing infrared transparent chemistries that are expected to improve FTIR measurements in live cell experiments. "We believe this report outlines the first use of FTIR ...

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