One species of armed beetle is proving that size doesnt necessarily matter when it comes to finding a mate. The creatures pulling techniques will be revealed in the April edition of the Royal Entomological Societys Ecological Entomology journal.
In the world of armed beetles, biggest is usually best, as males often fight for mating rights and those with the largest jaws beat off the competition. However, this is not always the case with one particular species.
Polar body diagnosis can make artificial fertilization more successful, according to Katrin and Hans van der Ven and Markus Montag of Bonn University Clinic, writing in the current edition of Deutsches Ärzteblatt International (Dtsch Arztebl Int 2008; 105[11]: 190-6).
If the two polar bodies in an egg cell are examined, it can be seen whether the chromosomes are damaged or whether the positions of the chromosomes are abnormal. This should help to prevent pregnancies and births of severely ill children and lead to higher implantation and birth rates.
Discrimination against overweight people—particularly women—is as common as racial discrimination, according to a study by the Rudd Center for Food Policy & Obesity at Yale University.
“These results show the need to treat weight discrimination as a legitimate form of prejudice, comparable to other characteristics like race or gender that already receive legal protection,” said Rebecca Puhl, research scientist and lead author.
The mesquite girdler Oncideres rhodosticta may only be 13mm long, but it has a big role in shaping the landscape. Research carried out by Benjamin Duval and Walter Whitford at New Mexico State University has revealed that the beetle is speeding up the degradation of grasslands in the Chihuahua desert, the landscape so stunningly depicted in this years Oscar-winning film No Country for Old Men.
Boston, MA—Researchers from Boston University School of Medicine (BUSM) and Boston Medical Center (BMC) have found post-traumatic stress disorder (PTSD) is associated with more hospitalizations, longer hospitalizations and greater mental healthcare utilization in urban primary care patients. These findings appear in the current issue of Medical Care.
CHICAGO, IL MARCH 27, 2008 — The Cardiovascular Research Foundation (CRF) will present results of the largest meta-analysis to date comparing mortality rates for drug-eluting stents (DES) versus bare metal stents (BMS) at the Drug-Eluting Stent Revolution VII meeting tomorrow evening in Chicago.
CHAMPAIGN, Ill. — Finding a simple and convenient technique that combines nanoscale structural measurements and chemical identification has been an elusive goal. With current analytical instruments, spatial resolution is too low, signal-to-noise ratio too poor, sample preparation too complex or sample size too large to be of good service.
Now, researchers at the University of Illinois have demonstrated a method for simultaneous structural and chemical characterization of samples at the femtogram level (a femtogram is one quadrillionth of a gram) and below.
TORONTO, ON. There is new promise on the horizon for those who suffer from REM Sleep Behaviour Disorder (RBD) according to researchers at the University of Toronto.
CAMBRIDGE, Mass., March 27, 2008 -- Harvard University researchers have discovered a new type of retinal cell that plays an exclusive and unusual role in mice: detecting upward motion. The cells reflect their function in the physical arrangement of their dendrites, branch-like structures on neuronal cells that form a communicative network with other dendrites and neurons in the brain.
The work, led by neuroscientists Joshua R. Sanes and Markus Meister, is described this week in the journal Nature.
WASHINGTON Students competing for resources in the classroom while discounting each others success are less likely to earn top grades than students who work together toward goals and share their success, according to an analysis of 80 years of research.
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