Tag: "cycles" at biology news

Not all industrial sectors respond the same way to changes and shocks

Business cycles are a fact of economic life and they can have a si... actions. There was a strong awareness of business cycles and macroeconomic changes. To avoid vulnerability, portfolios of activities driven by different busi...

Munich researchers discover exciting possible new application of PET imaging for ovarian cancer

...in the abdomen and pelvis. More important, several cycles of chemotherapy are generally necessary before the tumor size changes and physicians know if the treatment was successful," he said. These results suggest that sequential FDG PET could be used to predict response to neoadjuvant chemotherapy in advanc...

Why being a teenage mum could be good for you!

...ciences. "The females also experience reproductive cycles and show age-related decline in fertility and so provide an excellent opportunity to examine the mechanisms by which females lose reproductive potential as they delay breeding." Earlier research by Dr Moore showed that female dusky roaches that were ...

Gene controlling circadian rhythms linked to drug addiction, UT Southwestern researchers find

... the mice experience problems with their circadian cycles not sleeping as much and becoming more hyperactive they also found cocaine more rewarding than control mice, demonstrated by their strong preference for the location where the drug was administered. In addition, Clock-deficient mice produced more ...

Super predators and mass extinctions; extreme NMR; and the world's smallest solenoids

...ficiently low mutation rate, the model can lead to cycles that correspond to our 26 million year mass extinc...s. Previous models that do not show these sorts of cycles could be faulty, according to Lipowski, because they failed to account for the effects of limited li...

First frozen egg baby born in Canada

...use this success rate is comparable to regular IVF cycles with ICSI using fresh eggs in many IVF centres," says Dr. Tan. Egg freezing is useful for a number of reasons. "The process enables young women diagnosed with cancer to preserve their fertility before undergoing chemotherapy and radiotherapy, which c...

After a time-shift, mixed signals from the circadian clock

... (SCN). The clock is synchronized to environmental cycles of light and dark. It is well known, from everyday experience, that adjusting to new light schedules takes several days, though the details of how this adaptation takes place are not well understood. Researchers now report findings that suggest this ...

The ultimate spa: embryonic body wash controls left-right development

...current Cell article. The cilia, which twirl at 10 cycles per second, were too fast for conventional video recording and so the scientists captured their complex movement on a specially adapted high-speed video moving at 500 frames per second. "The net result is that the clockwise rotation of the cilia is c...

New kidney test better elder mortality predictor

...no change in values measured over a course of five cycles of freezing and thawing. In future research, Shlipak would like to conduct a clinical trial to determine if cystatin C is truly effective as a diagnostic tool. "We need to prove that before we can recommend that people use it."...

Large community-based clinical trial in older cancer patients suggests benefits of Neulasta

... those who received Neulasta in later chemotherapy cycles after developing a low white blood cell count. Th...in the incidence of febrile neutropenia across all cycles (4 percent versus 10 percent, respectively), as well as a 50 percent decrease in chemotherapy dose r...

Chaos is rare

...e of the model; this is common in nature, and such cycles are typically called "delayed feedback cycles." Furthermore, at the evolutionarily stable state (ESS), small changes in life-history traits could create marked increases in periodicity, making the dynamics responsive to changes in the system. The stu...

'Environmentalism: Retrospect and Prospect' symposium to be held in Woods Hole on June 3

... cycle, forest function, landcover/land use, water cycles and chemicals in the environment, science in public affairs, and education, providing primary data and enabling better appraisals of the trends in forests that influence their role in the global carbon budget. Center staff work locally and regionally...

Shared computing grid cuts data mountains down to size

...W computers around campus and directs those unused cycles to the service of science being done by Smith, Sch...r of GLOW is derived from harnessing the available cycles of many small computers, which almost never use their full computing capacity. Participating teams c...

How monarch butterflies are wired for navigation

...n the approximately 24 hour activity and metabolic cycles of animals from the simplest insects to humans. Reppert and his colleagues found that key genes responsible for the clock's molecular "ticks" were expressed in a brain region called the dorsolateral protocerebrum. Using tracer molecules, they were su...

From photovoltaics to solar thermal collectors: Evaluating and improving green design

... cycle, forest function, landcover/land use, water cycles and chemicals in the environment, science in public affairs, and education, providing primary data and enabling better appraisals of the trends in forests that influence their role in the global carbon budget. Founded in 1985 by George Woodwell, the...

Virus-host interactions at sea effect global photosynthesis

...capable of wielding surprising influence on global cycles by affecting the population dynamics and evolutionary path of Prochlorococcus . An investigation of the genetic makeup of three cyanophages in the freely-available online journal PLoS Biology helps reveal the complex role these phages might have ...

Elephant seal pups suffer from ocean warming

...ure changes associated with both long-term 25-year cycles and short-term 3-4 year cycles such as those caused by El Nio. Sea lions and fur seals that feed near their rookeries at the surf...

Study reveals candidate targets for anti-retroviral therapeutics

...he proteins encoded by retroviruses and their life cycles in animal cells. Scientists believe that these simple elements in a single-celled organism are a good model for understanding how retroviruses such as HIV interact with their hosts. Yeast has previously been used as a model to help scientists under...

OneWorld Health receives multimillion dollar grant for next steps in control of deadly disease

...their assets to pay for treatment, and perpetuates cycles of poverty. We will help change that. Given the high safety levels and initial cure rates comparable to current hospital-based therapies, we believe paromomycin will help the Indian government to safely and affordably control VL. This grant allows ...

Innovative collaboration brings Arctic science into the classroom

... and addresses how climate change is impacting the cycles of water and chemicals in the environment. Dr. Holmes has also studied desert streams in the southwestern United States, stream/riparian ecosystems in France, and estuaries in Massachusetts. Dr. Holmes earned his Ph.D. from Arizona State University, ...

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(Date:4/24/2014)... world,s oceans play a crucial role in the ... ecosystems and atmosphere. Now scientists at Scripps Institution ... a leap forward in understanding the microscopic underpinnings ... dioxide to make new cells, a substantial portion ... sea as a buffet of edible molecules collectively ...
(Date:4/24/2014)... EAST LANSING, Mich. --- New research shows that cells ... than scientists originally thought. Even when missing critical components, ... in an alternative way. , In a study published ... of researchers at Michigan State University showed that cells ... duplicate their DNA. , "Our genetic information is stored ...
(Date:4/24/2014)... pleased to announce that it has assumed ownership of ... University of Wisconsin. , The Journal of ... journal that publishes papers on all aspects of the ... molecular to the ecological -- as well as their ... individuals and institutions, and it provides a reasonably priced ...
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