Tag: "sizes" at biology news

Ocean scientists assess impact of seismic pulses in effort to protect whales

...xibility to design source arrays of many different sizes and power, allowing scientists to look deep below the ocean's surface to study problems as diverse as earthquake prediction and the ocean's role in the carbon cycle. Maya Tolstoy, lead author of the study, writes that the researchers covered sound fr...

Whale carcass yields bone-devouring worms

...researchers also observed that female worms of all sizes were full of eggs, which led co-author Vrijenhoek to comment, "These worms appear to be the ecological equivalent of dandelions-a weedy species that grows rapidly, makes lots of eggs, and disperses far and wide." This strategy makes sense considering...

Preschool bolsters early childhood immunity, reduces risk of young adult Hodgkin's lymphoma

... parent household and reductions overall in family sizes all contribute to this dramatic rise in nursery school and day care enrollment. "As parents of young children know well, the rate of exposure to childhood infections is high when groups of children spend time in close proximity, as is the case in day...

Size does matter when choosing a mate

... has become known, says that the ratio between the sizes of the sexes is related to body size with very few...een males, the difference in the ratio between the sizes of the sexes increases, explaining the changing ratios identified by Rensch. In contrast, in species...

RNA could form building blocks for nanomachines

...uo's group, hope to build microscopic devices with sizes that are best measured in nanometers - or billionths of a meter. Because nature routinely creates nano-sized structures for living things, many researchers are turning to biology for their inspiration and construction tools. "Biology builds beautiful...

The birth of a beak

...o the study of how organs of different structures, sizes and shapes are produced in evolution and development. Their earlier work on the 120-million-year-old Longirostravis, the earliest wading bird, prompted them to begin looking further into the molecular bases of beak shape and chicken teeth in evolutio...

Natural mineral locks up carbon dioxide

...on dioxide have crushed serpentine very finely, to sizes smaller than beach sand, but, even at these small sizes, it takes high temperatures to speed up the reaction, "says Maroto-Valer. "With our method, we do not need to crush it that fine and we do not need high temperatures. In fact, the reaction gives...

Fossils reveal direct link between global warming and genetic diversity in wildlife

...ic diversity during the time that their population sizes are undergoing reduction. Pocket gophers, on the o... shows that gene flow is occurring when population sizes are low," Hadly said. "So the snapshot we have today about how populations are connected may not be ...

Highlights of the October 2004 Journal of the American Dietetic Association

...activity, people should keep tabs on their portion sizes to help them manage the number of calories they consume. Researchers from The Pennsylvania State University examined whether eating a salad as a first course had any effect on intake of the main meal. The results of the...

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(Date:4/18/2014)... memories? How did it make you feel? According to ... experience, such as how sad you were or how ... when you can,t stop thinking about it. , ... context of the memories, rather than how you felt, ... the negative effects of these memories, a new study ...
(Date:4/18/2014)... in French . ... and regenerative medicine. A team led by Ludwik Leibler ... Tech) and Didier Letourneur from the Laboratoire Recherche Vasculaire ... demonstrated that the principle of adhesion by aqueous solutions ... soft-tissue organs and tissues. This easy-to-use gluing method has ...
(Date:4/17/2014)... Scientists have identified the first genetic variant specifically ... sub-type accounting for around 10-15 per cent of ... study of the breast cancer sub-type, called invasive ... genetic causes of this particular kind of breast ... The research, published today (Thursday) in the journal ...
(Date:4/17/2014)... Biology and Medicine a multidisciplinary research team ... in the Institute of Genomic Biology (IGB) on ... describe their recent work on subcellular redox homeostasis. ... functions including energy metabolism, signaling, and transcriptional processes. ... cellular behavior, redox status has been recognized as ...
(Date:4/17/2014)... Pediatrician-in-Chief Jon McCullers, MD, was recently invited to ... Nature Reviews Microbiology , one of the ... world-renowned infectious disease specialist, and chair of the ... Health Science Center, analyzed the epidemiology and microbiology ... pandemics, as well as more recent 2009 novel ...
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