Tag: "tries" at biology news

Evolution of language: FOXP2 and human uniqueness in religious perspective

...might tempt us into a reductionistic thinking that tries to explain complex things only by breaking them down into simple atomic units. I believe we must be careful to avoid the temptation toward an atomistic explanation of something so enigmatic as language. Even if it is true that without FOXP2 our lin...

Songbirds use mental pointer when playing tunes

...ts about a second. At one month old, a finch first tries to sing a song that it memorized while listening to its father sing. While awake, it continues to practice singing thousands of times a day. Then it also mentally rehearses while asleep, as discovered in a different study. The finch can repeat the...

JCI table of contents: October 1, 2002

...pecies), it poses a very specific problem when one tries to use rodents to study a drug with side effects that include nausea and emesis (the medical term for vomiting). Annette Robichaud and colleagues at the Merck Frosst Centre for Therapeutic Research in Montreal, Quebec, have faced this problem while d...

Not all mammals vomit -- or how to study emesis in mice

...pecies), it poses a very specific problem when one tries to use rodents to study a drug with side effects that include nausea and emesis (the medical term for vomiting). Annette Robichaud and colleagues at Merck Frosst Centre for Therapeutic Research in Montreal, Quebec, have faced this problem while devel...

Mole-rat Methuselahs push evolutionary theory of aging

...ies wear out before others. Senescence theory also tries to explain, for example, why gerbils live only a couple of years, humans regularly live eight to nine decades and redwood trees for millennia. "Whatever kind of organism it is, it's going to senesce," says Paul Sherman, a professor of neurobiology a...

Scientists uncover 'time for bed' molecules

...s due to a process called sleep homeostasis, which tries to maintain a balance between time spent awake and time spent asleep. Molecules known as cryptochromes are known to be involved in the generation of the natural rhythms of the body clock, but it is not clear if they are involved in the regulation of...

Time flies

... the worldview of a quantum theory of gravity that tries to deal with all of space at once; the most common approach to constructing a quantum theory of gravity. An alternative worldview is in the depiction of a second circle (right). In this circle, we observe space/time and space from within it, and can ...

Maine chemist wins national award for research and mentoring

...further other fields such as nanotechnology, which tries to design ever smaller and more exquisitely controlled systems such as thin-screen displays. Christensen described himself as "somewhat of a late bloomer" when it came to interest in science. "In high school I was more interested in athletics," he sa...

Crows alter their thieving behavior when dealing with kin or other birds

... take food from kin but becomes aggressive when it tries to steal a morsel from a non-related crow. This is believed to be the first time that such a behavior pattern has been observed in any bird species. The findings are published in the current issue of the journal Bird Behavior by Renee Robinette Ha,...

Italian research reveals a new twist in the battle of the sexes

New research from Italy reveals that mother nature tries very hard to compensate for the fact that male foe...uman Reproduction[1] is the extent to which nature tries to level the playing field to give boys a sporting chance. In the first study designed specifically ...

Molecule offers insights into fertilization

... its function," Zimmer said. "When bourgeonal then tries to bind, it can't; undecanal out-competes bourgeonal, and completely inhibits the response of sperm to follicular fluid. "We are rapidly making strides in identifying the functional role in fertilization of remote chemical communication between sperm...

As Vitamin B-6 levels go down, numbers of DNA strand breaks go up

...Vitamin B-6, it doesn't make enough thymine and it tries to make do by substituting uracil. Uracil is not a normal component of DNA, and the normal DNA repair mechanisms of the cell become stressed. This inefficiency in the normal repair mechanisms leads to breaks in DNA strands and instability of chromo...

Undergraduate students physics research earns trip to international conference

...Uwe C. Tuber. "Our group (condensed matter theory) tries to build theoretical understanding of systems 'out of equilibrium,' Reid said. "One example is life, which is maintained by a constant energy flux through the system. My project's focus was to use computer simulations to study anomalous diffusion (ho...

Of mice and memory

... The body identifies them as foreign molecules and tries to destroy them," said Michel Baudry, the study's lead investigator and a biological sciences professor in the USC College of Letters, Arts & Sciences. Through the company he co-founded, Eukarion Inc., Baudry developed synthetic versions of the two ...

Scientists solve puzzle of how kinesin motor molecules walk or limp across cells

...n ways that they shouldn't," Block said. "The cell tries to get rid of these bad protein aggregates by transporting them elsewhere using motor molecules such as kinesin. If we could understand something about how protein transport is done right, then maybe we could learn something about how it's done wrong...

'Elves' makes protein crystallography easier

...he model. No human intervention is needed as Elves tries different parameters. "Computers are faster today and people are automating many steps in the process of analyzing X-ray diffraction data, and Elves combines all these techniques together," Holton said. "Making the crystal is 90 percent of the eff...

Bacteria lingering in body may pose future food poisoning risks, Stanford study finds

...re dividing in the gall bladder. Normally Listeria tries to evade the immune system by replicating inside the host's own cells. But in the gall bladder, which serves as a way station for bile in between meals, the bacteria go it alone, reproducing in long extracellular chains that can cram the organ withou...

Three personal ads for physics

... nanotechnology and black hole formation. Kakalios tries to avoid bland examples that involve the infamous likes of "a 60 kg woman getting on 10 kg wagons filled with 5 kg bricks," unless he's talking about Wonder Woman....

UN study shows environmental consequences from ongoing boom in personal computer sales

...existing legislation in Europe or elsewhere really tries to extend the lifetimes of computers and components, despite the huge environmental and economic potential. According to Kuehr, of the UNU Zero Emissions Forum, some government policies such as taxation rules even have the opposite effect of shorteni...

Scientists develop new cloning technique that dramatically shortens the search for genes

...at produce defective copies of RNA, which the cell tries to eliminate as quickly as possible a fact that led Mitra and her colleagues to predict that defective RNA would only show up in very low concentrations in mutated cells. But would the reverse also be true? If a cell produces low quantities of an RN...

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