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Tag: "ignore" at biology news

Termites feed through good vibrations

...ocktail party effect" of signal processing ?how to ignore most noise but have some signals that trigger attention ?that may prove useful in artificial intelligence. CSIRO entomologist Theo Evans says laboratory experiments have found that termites use their ability to detect vibrations to determine which f...

A much-needed shot in the arm for HIV vaccine development

...ation to the field."Ho urges the Enterprise not to ignore the important contributions madeby scientists outside of the collaboration. "It is my contention thatgreat new ideas are as likely to come from curiosity-driven basicstudies as from the mission-oriented approach that is represented bythe new proposal...

Atmosphere may cleanse itself better than previously thought

...s. "The upshot is that a lot of atmospheric models ignore this region altogether, assuming that because noth...er, that the results do not mean we can now safely ignore atmospheric pollution. "This study in no way implies that we are out of the woods with regard to at...

Vitamin A's paradoxical role in influencing symmetry during embryonic development revealed

... retinoic acid makes sure that some of those cells ignore the left-right instructions and progress symmetrically. Belmonte compares the node to a doorway. "Before embryonic stem cells enter the node, they don't have an orientation. Nor are they differentiated into specialized tissues -- such as heart or br...

Understanding biases in epidemic models important when making public health predictions

...le harbor infections. The simplest models entirely ignore the latent period of a disease: the period of time when an individual is infected but not yet infectious. Other models often assume that the rate of progression from latent to infectious, and infectious to recovered, is constant, irrespective of the ...

Inhaling large amounts of salt can cause hypertension

...le harbor infections. The simplest models entirely ignore the latent period of a disease: the period of time when an individual is infected but not yet infectious. Other models often assume that the rate of progression from latent to infectious, and infectious to recovered, is constant, irrespective of the ...

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

...le harbor infections. The simplest models entirely ignore the latent period of a disease: the period of time when an individual is infected but not yet infectious. Other models often assume that the rate of progression from latent to infectious, and infectious to recovered, is constant, irrespective of the ...

New clue to cocaine addicts' quirky behavior

...le to change strategies when they were required to ignore the cue and always make a left or right turn to receive the reward. "Thus, although abnormally induced LTP by psychostimulants at limbic inputs might not interfere with learning a response strategy, it may reduce the capacity of these animals to con...

Discovery suggests why stem cells run through stop signs

... offer one of the first clues as to why stem cells ignore stop signs in the cell cycle: a special molecular mechanism has cut the brakes. The researchers found that tiny bits of genetic material called microRNAs are necessary for stem cell division to take place, suggesting that microRNAs shut off the signa...

Modification of program enables prediction of gene transcription

...nt gene finding systems ?except for N-SCAN ?either ignore the UTR splice sites or incorrectly incorporate them into some protein-coding segment, making gene prediction a none-too-sure industry. "We've found that when we add the spliced untranslated regions to our system, we not only get good predictions fo...

Traditional models underestimate extinction rates

...kelihood of extinction and shows that because they ignore a critical parameter in projecting risk, they underestimate extinction rates. Standard models for predicting extinction assume that population growth and decline are governed by random, or stochastic, variables. But few scientists have actually test...

'Executive' monkeys influenced by other executives, not subordinates

...logists have discovered. By contrast, they tend to ignore glance cues from low-status monkeys; while low-status monkeys assiduously follow the gaze of all other monkeys. The discovery represents more than a confirmation of what most people believe about their bosses, said the researchers. The findings reve...

Stanford study of owls finds link in brain between sight and sound

...rmation. It has to attend to what is important and ignore the rest. Two scientists at the Stanford Universi...s have to be able to attend to certain stimuli and ignore others. "Now that we have found that the principle applies in owls as well as monkeys, we can figur...

World first research to speed up cure for ear infections

...efore they receive medical treatment. "We tend to ignore ear infections thinking they will go away or we might have a reluctance to visit the doctor ?but in third-world countries the problem is common due to the lack of available treatment," he said. Dr Ghassemifar said the results of other gene targeting...

Why nerve cells work faster than the theory allows

...ty of the threshold potentials allows the cells to ignore slowly varying stimuli. The cells continuously increase their threshold so that in many cases no impulse is initiated at all. The fast activation of action potentials, on the other hand, helps the cells to transmit fast changing signals, even with hi...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...tention switching. This suggests that learning to ignore stimuli and rapid attention switching are competing processes, with healthy individuals ignoring familiar stimuli as their primary strategy. It would be interesting to assess whether sleep restriction causes people to lose the ability to screen out e...

Leave it to salmon to leave no stone unturned

...some other kind of animal ?make them impossible to ignore as ecosystem engineers. "One specific application to stream restoration in the Pacific Northwest, for example, deals with the practice of fertilizing salmon streams with the carcasses of dead salmon obtained from hatcheries," says Daniel Schindler, ...

Value of services performed by insects tops $57 billion in US

...nk twice before you blithely swat, stomp, curse or ignore insects, says Cornell University entomologist John Losey, who co-authored a study that shows the dollar value of some of those insect services is more than $57 billion in the United States annually. The research appears in the journal BioScience toda...

Study supports 'urgent' need for worldwide ban on lead-based paint

...lobal economy, it would be irresponsible for us to ignore the public health threat for the citizens in the offending countries--as well as the countries they do business with." This study, Dr. Clark says, is believed to be the first to show that new paint in many unregulated Asian countries greatly exceed...

3-D model reveals secrets of metastasis

...nal Academy of Sciences. "Two-dimensional assays ignore the obstacles that cells face in their natural contexts," explains Zaman, who recently became an assistant professor at the University of Texas at Austin. "In 3D, cells move through a thick jungle of fibers, or "vines" TM , that hinder forward progre...

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