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Tag: "terrain" at biology news

Scientists: As rainfall changes, tropical plants may acclimate

...t nitrogen in moist areas. But in the still wetter terrain that characterizes some rainforests, they switch to another form of nitrogen that becomes more available in those conditions. The findings, reported in paper set to appear this week in the online edition of the Proceedings of the National Academy ...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...provide information on surface properties such as terrain topography (3aPAb4). Jean-Pierre Williams ( jpierre@gps.caltech.edu ), Andi Petculescu (U. of Louisiana at Lafayette, andi@louisiana.edu ), and Amanda Hanford of Penn State University ( ald227@psu.edu ) will present computer simulations and the...

Plants give up answers in the war on bacteria

...nged the textbook description of a plant's surface terrain and is unveiling new knowledge of how bacterial pathogens invade plants and take hold. The most recent paper, published in the Sept. 8 edition of Cell, redefines the role of the plant's pores in defense against invading bacteria and how some bacteria...

Triple threat polymer captures and releases

...e examination, reveals treacherous nanometer-sized terrain composed of mountains and valleys, ranging from hard to soft, hydrophilic to hydrophobic. The complex surface that is created makes it difficult for marine organisms to establish a toehold. Her laboratory has produced these novel materials and they...

NYU researchers decorate virus particles, showing potential to enhance MRI capabilities

... contrast agents. They have also tried to use this terrain to facilitate "multi-modality," in which a set of imaging probes, such as those for both MR and optical imaging, are integrated. The NYU researchers were able to show the attachment of a large number of gadolinium chelates--the chemical compo...

Research tracks whales by listening to sounds

...nd even farther, if the waters are shallow and the terrain even. Using those hydrophones, Mellinger discovered a number of sperm whales living in the Gulf of Alaska in the winter. The hydrophones picked up almost half as many whale sounds as in the summer ?indicating a surprisingly robust "off-season" popul...

Penguins waddle but they don't fall down, UH researchers say

...ill travel more than 75 miles across rugged ground terrain to reach their nesting sites. Kurz believes the penguins have learned to use the waddling motion in a way that makes their movements more efficient, adjusting for the limitations of the size of their legs and their weight. Humans, on the other hand...

Relic of life in that Martian meteorite? A fresh look

...milar analysis on carbonate globules from Earth in terrain analogous to Mars--the Bockjord Volcanic Complex on Svalbard--for comparison." The researchers found that the macromolecular carbon is always associated with the mineral magnetite. This association is important because magnetite is known to act as ...

First wolverine radio-collared in Pacific Northwest

...ts in the far north, but also occur in mountainous terrain at the southern end of their current range in the Cascades and Northern Rockies. They prey on everything from moose to mice, and often rely heavily on scavenging for food during winter. "The young female wolverine we collared weighed about 19 pound...

Sahara's edge studied from ground, air and space to improve water management

...d teams precisely documented ground vegetation and terrain at sampling sites within these test areas, with sa...e maps, surface water extent and dynamics, digital terrain models and estimates of water consumption and extraction. These required products were identified by...

The synapse is a shotgun

...ructed a new detailed map of the three-dimensional terrain of a synapse -- the junction between neurons which are critical for communication in the brain and nervous system. The "nano-map," which shows the tiny spines and valleys resolved at nanometer scale, or one-billionth of a meter, has already proven it...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...al" underwater hills that cover a large geomorphic terrain on the ocean floor and are the most common landforms on the Earth. However, little is known about hydrothermal venting from these common features. The team describes newly discovered geological and biological manifestations of hydrothermal activity ...

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