843,143 articles

Neurons from stem cells could replace mice in botulinum test

(PhysOrg.com) -- Using lab-grown human neurons, researchers from the University of Wisconsin-Madison have devised an effective assay for detecting botulinum neurotoxin, the agent widely used to cosmetically smooth the wrinkles of age and, increasingly, for an array of medical disorders ranging from muscle spasticity to loss of bladder control.

Prison misconduct findings shed light on crowding problem

UT Dallas criminologist Dr. Robert Morris and doctoral student Erin Orrick won the 2012 William Simon/Anderson Publishing Outstanding Paper award from the Academy of Criminal Justice Sciences for their article that shows offenders who return to prison on technical parole violations are far less likely to engage in prison misconduct.

Quantum biology and Ockham's razor

(PhysOrg.com) -- In a paper just published in Nature Chemistry, a team of University of Bristol scientists explores whether new models or concepts are needed to tackle one of the 'grand challenges' of chemical biology: understanding enzyme catalysis.

Quantum microphone captures extremely weak sound

(PhysOrg.com) -- Scientists from Chalmers have demonstrated a new kind of detector for sound at the level of quietness of quantum mechanics. The result offers prospects of a new class of quantum hybrid circuits that mix acoustic elements with electrical ones, and may help illuminate new phenomena of quantum physics. The results have been published in Nature Physics.

Right hand or left? How the brain solves a perceptual puzzle

(Medical Xpress) -- When you see a picture of a hand, how do you know whether it’s a right or left hand? This “hand laterality” problem may seem obscure, but it reveals a lot about how the brain sorts out confusing perceptions. Now, a study which will be published in a forthcoming issue of Psychological Science, a journal published by the Association for Psychological Science,...

Toshiba announces family of ultra-efficient, high-speed, low voltage MOSFETs

Toshiba today announced a new family of ultra-high-efficiency, high-speed MOSFETs that deliver significant improvements in trade-off characteristics between low on resistance (RDS(ON)) and low input capacitance (Ciss). The new trench MOSFET series will have voltage ratings from 60V to 120V and will allow designers to reduce the size and improve the efficiency and performance of secondary...

Want consensus? Look to fish

(PhysOrg.com) -- A flock of birds. A school of fish. An army of ants. Glance at these groupings and they appear to move in unison effortlessly. Take a closer look and you’ll see an intricate symphony of leaders and followers, cues and signals, consensus building and decision-making.

Children hospitalized at alarming rate due to abuse

In one year alone, over 4,500 children in the United States were hospitalized due to child abuse, and 300 of them died of their injuries, Yale School of Medicine researchers report in a new study. The findings are published in the March 2012 issue of Pediatrics (published online Feb. 6).

New virtual tool may provide more accurate diagnosis of genetic mutations

DNA sequencing to detect genetic mutations can aid in the diagnosis and selection of treatment for cancer. Current methods of testing DNA samples, Sanger sequencing and pyrosequencing, occasionally produce complex results that can be difficult or impossible to interpret. Scientists at the Johns Hopkins University School of Medicine have developed a free software program, Pyromaker, that can more...

Outrage over Steve Jobs angel in Taiwan ad

A Taiwanese television commercial featuring a Steve Jobs look-alike angel complete with white wings and a halo has caused uproar, with critics saying it is disrespectful towards Apple's late founder.