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circuit in Biological News

Identification of a key molecular pathway required for brain neural circuit formation

Montral, May 15, 2009 The research group of Dr. Frdric Charron, a researcher at the Institut de recherches cliniques de Montral (IRCM), has made a discovery which could help treat spinal cord injuries and neurodegenerative diseases. This new finding has been published in the current issue of the ...

e-Smart(R) Technologies, Inc., Announces Next Generation Superthin Polyimide Flexible Circuit Biometric Super Smart Card(TM) card, the 'i am'(TM) Card.

NEW YORK, Jan. 8 /PRNewswire-FirstCall/ -- e-Smart(R) Technologies, Inc., (Pink Sheets: ESMT); and its parent IVI Smart Technologies, Inc., ("e-Smart(R)" or the "Company") are pleased to announce that in December 2007, the Company completed manufacture and testing of its next generation supert...

Model connects circuit theory to wildlife corridors

Scientists at Northern Arizona University and the National Center for Ecological Analysis and Synthesis have developed a model that uses circuit theory to predict gene flow across landscapes. Their approach could give managers a better way to identify the best spots for wildlife corridors, which a...

Innovative model connects circuit theory to wildlife corridors

(Flagstaff, Ariz.) Scientists at Northern Arizona University and the National Center for Ecological Analysis and Synthesis have developed a model that uses circuit theory to predict gene flow across landscapes. Their approach could give managers a better way to identify the best spots for wildlife...

Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle

Fluctuations in sex hormone levels during women's menstrual cycles affect the responsiveness of their brains' reward circuitry, an imaging study at the National Institute of Mental Health (NIMH), a component of the National Institutes of Health (NIH), has revealed. While women were winning rewards,...

Emotional control circuit of brain's fear response discovered

Columbia University Medical Center researchers have identified the neurocircuit that controls the brain's response to fear. Results suggest that it may be possible to understand psychiatric disorders, such as anxiety or depression, from the underlying neurophysiology ?workings of the brain. The...

Abnormal brain circuits may prevent movement disorder

...netheless, mutation carriers have a characteristic circuit disorder involving a motor system that is revved u...op the flow of neural signals from one part of the circuit to the other. Those with only one lesion in the circuit developed the debilitating movements and those wit...

Silicon with afterburners: Process developed at Rice could be boon to electronics manufacturer

...in 1965, said the number of transistors that can be placed on an integrated circuit doubles about every two years. But even Moore has said the law cannot be su...me way, but that becomes more difficult with the size of a state-of-the-art circuit at 45 nanometers wide -- a human hair is about 100,000 nanometers wide -- a...

Finding the constant in bacterial communication

...electively kill cancer cells" For example, You has already gained insights into the relationship between predators and prey by creating a synthetic circuit involving two genetically altered lines of bacteria. The findings from that work helped define the effects of relative changes in populations. ...

Discovery of a water snake that startles fish in a way that makes them flee into its jaws

... fish are famous for the rapidity of their escape response and it has been extensively studied. These studies have found that many fish have a special circuit in their brains that initiates the escape, which biologists call the "C-start." Fish ears sense the sound pressure on each side of their body. When th...

Caltech scientists reveal how neuronal activity is timed in brain's memory-making circuits

...t was assumed that activity in the hippocampus is synchronized throughout," says Evgueniy Lubenov, a postdoctoral scholar at the Center for Biological circuit Design at Caltech. "But when we looked simultaneously at many different anatomical locations across the hippocampus, we found instead a systematic del...

Toward cheap underwater sensor nets

...f theory, but you don't learn how to revise a schematic, layout the printed circuit board, assemble the circuit and then perform field tests. I have friends at other schools, and when it ...

Validus and HierStar Form Strategic Alliance to Offer the First Complete Range of Authentication Products

... OEM customers for the last five years. Its powered card technologies are based on HierStar's engineering, experience and patents in thin and flexible circuit boards, components and displays, as well as molding technologies for ISO standard cards. HierStar supplies OEMs with displays, and ready to laminate i...

Cocaine: Perceived as a reward by the brain?

...ncy of drug use has been demonstrated, researchers still do not fully understand its mechanism of action. Is it the repeated stimulation of the reward circuit that leads to addiction, or is it an inherent sensitivity to addiction that leads to the increased secretion of dopamine? This question is not easy to...

Flow of potassium into cells implicated in schizophrenia

...order executive functioning, such over expression of Isoform 3.1 in schizophrenia could result in "abnormally increased neuronal excitability, runaway circuit activity and inefficient information processing," suggested Stephen Huffaker, Ph.D., the article's lead author, now a medical student at Harvard. The ...

Neuroscientists discover long-term potentiation in the olfactory bulb

...wever, the Case Western Reserve University researchers found that the brain circuit had the ability to change with experience was unexpectedly a connection fro...in circuits are actually doing." Previous studies had suggested that the circuit changes associated with olfactory learning, such as sheep learning to recog...

American Chemical Society's Weekly PressPac -- April 22, 2009

...molecules Researchers in The Netherlands are reporting development of a new plastic with potential for use in the first easy-to-recycle computer circuit boards, electrical insulation, and other electronics products that now wind up on society's growing heaps of electronic waste. Their study appears in ...

Using combinatorial libraries to engineer genetic circuits advances synthetic biology

...e scientists turned to a computer model and designed and built a basic gene circuit to predict how fluorescent protein expression varied with levels of promoter-inhibiting chemicals. Using the same simulation, for the simple gene circuit the researchers went the next step with a genetic timer, a more complicated...

Ultrasound imaging now possible with a smartphone

...onics design. He began working on ultrasound system designs 25 years ago, and in that span he has shrunk the electronics from cabinet-sized to a tiny circuit board one inch by three inches. A typical, portable ultrasound device may cost as much as $30,000. Some of these USB-based probes sell for less than...

NIST-Cornell team builds world's first nanofluidic device with complex 3-D surfaces

... or silicon wafer with the same lithographic procedures used to manufacture circuit patterns on computer chips. These flat rectangular channels are then topped...to harness the power of light to engrave microcircuit patterns onto a chip. circuit patterns are defined by templates, or photomasks, that permit different amo...

Covering the bases: Quantum effect may hold promise for low-cost DNA sequencing, sensor applications

...ether, C-G pairs use three hydrogen bonds. For this reason, it's physically harder to break C-G bonds. By measuring the current drop in the electrical circuit formed between the microscope probe and the substrate as the hydrogen bonds are gently pulled apart, a positive identification of the base being read ...

Lehigh researcher awarded $1.8 million NIH grant

... tandem to determine the location of sound, relying on a specialized neural circuit in the brain devoted to the process. The brain is able to compute where sou... will enable Burger to further explore how the inhibitory components of the circuit influence processing in each brain area involved in computing sound source ...

Plugging in molecular wires

...logical light-capturing units were deposited onto electrodes as thin films. However, the transfer of electrons from the light-capturing layer into the circuit in this type of system is so inefficient that most of the electrons don't even make it to the target electrode. The secret to the success of natura...

Developer of advanced computing memory, father of biochemical engineering, and innovative engineering educators win highest engineering honors of 2009

...n of computing. DRAM is a form of computer memory that puts bits of data into capacitors energy-storage devices within a miniaturized electronic circuit and periodically recharges the capacitors so that the information in them is not lost. His one-transistor design was a vast improvement over the six...

Motor nerve targeting to limb muscles is controlled by ephrin proteins

... Montral, December 24, 2008 A study from a team of researchers including Dr. Artur Kania, Director of the Neural circuit Development Research Unit at the IRCM, and Dr. Dayana Krawchuk, postdoctoral fellow, shows how a family of proteins present in the developing limb con...

Pitt, NETL researchers report molecular chain reaction thought to be impossible

...chain reactions and self-assembly has potential applications in information storage and in nanolithography, a process used in producing microchips and circuit boards. Because the demonstrated reaction involved several molecules on a surface, it reframes researchers' understanding of surface-based chain re...

New holographic method could be used for lab-on-a-chip technologies

...ime. The other technique, known as dielectrophoresis, uses electric fields generated from metallic circuits to move many particles at a time. Those circuit patterns, however, cannot be changed once they are created. The new method is able to simultaneously position numerous particles and be changed at ...

LSUHSC research identifies key contributor to Alzheimer's disease process

...a byproduct, in regulating inflammation and the development of Alzheimer's disease. The paper, An NF-kB-sensitive micro RNA-146a-mediated inflammatory circuit in Alzheimer's disease and in stressed human brain cells, will be published in the November 14, 2008 issue of The Journal of Biological Chemistry . ...

NYU biologist Bonneau named among 20 "visionary" scientists under 40 by Discover magazine

...ul mapping of genomic systems. Bonneau and his colleagues at the Institute for Systems Biology in Seattle have created models that map the control circuit governing living organisms. This is an important milestone in systems biology because it allows researchers to model how the organism adapts over time...

Ultrasound shown to exert remote control of brain circuits

...ses of ultrasound, a group of neuroscientists at Arizona State University has developed pulsed ultrasound techniques that can remotely stimulate brain circuit activity. Their findings, published in the Oct. 29 issue of the journal Public Library of Science (PLoS) One , provide insights into how low-power ul...

NJIT professor finds engineering technique to identify disease-causing genes

...are critical for disease development and which molecules are the most promising therapeutic targets." Tahoori noted that it was exciting to see how circuit engineering research can contribute to finding the possible causes and treatments of complex human diseases. "Modeling a problem in a different domain...

Streamlining brain signals for speed and efficacy

...s neurons in the brainstem that link the two. While the brevity of this circuit keeps reflex times short, it was less clear what qualities of the circuit ensure that eye velocity is precisely matched to head velocity. Since the V...

Study reveals how viruses collectively decide the fate of a bacterial cell

... this study, the researchers analyzed the decision circuit that determines whether a virus initially chooses ... the lytic pathway. The decision of the genetic circuit that controls whether a virus initially chooses ly...nd cII and their protein production. The decision circuit involved both negative and positive feedback loops...

AGU journal highlights -- Sept. 3, 2008

...ght up to the ionosphere. This difference gives rise to the global electric circuit (GEC) through the presence of electrical generators in the atmospherethunde...charges. Title: On the role of transient currents in the global electric circuit Authors: E. A. Mareev, S. A. Yashunin, and S. S. Davydenko: Institute of...

Caltech scientists create DNA tubes with programmable sizes for nanoscale manufacturing

...rol the diameters of such tubes. Peng Yin, a senior postdoctoral scholar in bioengineering and computer science at Caltech's Center for Biological circuit Design, along with his colleagues has designed a series of flexible, single-stranded DNA molecules, called single-stranded DNA tiles. Each single-stra...

Caltech researchers awarded $10M for molecular programming project

...of researchers who are embarking on this project," he says. Examples include research projects and workshops funded by Caltech's Center for Biological circuit Design, an IST initiative. The Expeditions in Computing award, sponsored by the NSF's Directorate for Computer and Information Science and Engineer...

A recipe for saving the world's oceans from an extinction crisis

...ts that we perceive as relatively pristine have, in fact, been radically altered by centuries of human exploitation. Jackson has been on the lecture circuit since then. "Our amnesia about what is natural is the greatest threat to the environment," said Jackson, in the youTube version of his talk "The State...

Unlocking mystery of why dopamine freezes Parkinson's patients

...hot summer night, or just lay on the couch? One circuit is a "stop" circuit that prevents you from acting on a desire; the other is a "go" circuit that provokes you to action. These circuits are lo...

American Chemical Society's Weekly PressPac -- July 30, 2008

...IMMEDIATE RELEASE Turning those old electronic circuit boards into new park benches Environmental Scien...rvation, reuses fibers and resins of waste printed circuit boards (PCBs) that were thought worthless to produ...lectronic waste, Xu says. Although metals from the circuit boards, such as copper and aluminum, are recycled,...

Tufts to develop morphing 'chemical robots'

...uromechanics, micromechanical engineering, soft material characterization and modeling, wireless transmission of data and power, mixed mode integrated circuit design, and mobile robot navigation and sensor fusion. The team plans to build prototype chembots as small as 2 grams and as large as 200 grams. ...
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