Tag: "mechanical" at biology news

Leibniz Prize Winners 1999 - Most Highly Endowed German Promotional Prize For Ten Scientists

...lion) Ekkard Brinksmeier obtained his doctorate in mechanical engineering from theInstitute for Production Engineering and Machine Tools in Hanover; from 1982 to1992 he worked as a senior engineer and head of the production processesresearch centre associated with the chair of Professor Tnshoff in Hanover. Hequ...

Largest Acoustics Meeting In History Expected

...nical systems (MEMS)--in which various sensors and mechanical devices are constructed on a single chip (2aEA5). Joerg Sennheiser, the chairman of Germany's Sennheiser Electronics, will demonstrate of a microphone that does not need an outer "membrane"--the partof the microphone that affects the quality most (2...

Computer Simulation Reveals Nano-Switch That Activates Cell-Binding Function Of Key Protein In The Body

...ely tiny loop, Vogel sought tounravel its internal mechanical operations. X-ray diffraction analysis reveals the 3-D structure of individualmolecules in exquisite detail. And researchers using atomic force microscopy inconcert with optical tweezers can measure the forces required to pull moleculesapart....

New Insights Into The Transport Machinery Of The Cell: A Single Protein Substitutes The Regulatory Machinery Specifying Endosome Fusion In Vitro

...b5 effectors compriseboth regulatory molecules and mechanical components of the membrane transportmachinery. This regulatory machinery is important in vivo but can be bypassed bythe increase of EEA1 concentration in the minimalist in vitro system. It was found that EEA1 actually bridges membranes and thisknowle...

New Biomaterial May Replace Arteries, Knee Cartilage

...its attraction to water; researcherscan adjust its mechanical strength as needed; it is compliant like normal bo...s," said leadinventor Dr. David Ku, a professor of mechanical engineering at Georgia Tech anda professor of surgery at Emory University. "But we first need to mak...

Nerve Cells On The Go

...s one of its major components.Beyond giving a cell mechanical strength, the cytoskeleton is the actualexecutor of most biological events that require a change in a cell's shape ormotility. Examples include the development of an organism with different typesof cells arranged in the proper places, or the rogue tr...

Degrading Plastics To Reduce Waste

...ls to decompose. Thematerial has exactly the same mechanical properties as traditional polyethenebut decomposes in a maximum of five years, compared to 100 years. SPI-TEK, produced by Symphony Environmental, contains up to 3% of a non-toxicDegradable Compostable Plastic (DCP) additives that acts as a catalyst ...

New Protein-Like Polymer Shows Promise For Blood Vessel Replacement

...h respect to the kinds of cellularinteractions and mechanical properties we can achieve." Genetic engineering wasusedto produce analogues of the polymer's key component, elastin, a protein similartocollagen and an essential part of elastic fibers in mammals. Tirrell alsocreditsUniversity of Minnesota research...

Penn Researchers Develop Gene Therapy Technique That Reverses Muscle Membrane Weakness In Muscular Dystrophy Variant

...of individualmuscle fibers, there is a loss in the mechanical integrity of part of the musclemembrane. This loss results in an in-rush of calcium - which, in turn, launchesa rapid destruction process that adversely effects several other proteins in themuscle fiber. "Once a muscle fiber sustains this sort of l...

Osiris Therapeutics Reports Key Findings in SCIENCE Verifying Existence of Adult Stem Cells

...rowth factors, nutrients, spatial organization and mechanical forces. It has taken several years to refine our assays, but we now have a clearer understanding of the differentiation mechanisms." Dr. Pittenger observed, "When we saw that human adult stem cells could be expanded from a single cell that would diff...

Porous Silicon Joining Humans To Machines

...us version of silicon could be the key to allowing mechanical devicesto interact with human tissue, according to...s silicon could be used to bridge thegap between a mechanical device and human tissue by transmitting the signals andinformation from a device to the nervous syst...

Story Tips: Engineering Students Pursue Cutting-Edge Research

...cts: A Robotic Submarine Two seniors majoring in mechanical engineering sunk their $2,500 research awardsinto ...ulty advisor,Louis Whitcomb,assistant professor of mechanical engineering, the team was able to borrow anexpensive Doppler Vehicle Log navigation system from San ...

Trash From Crop-Processing Plant Harvested For Disease-Fighting Agents

...ring crop processing, rawmaterials are modified by mechanical disruption, chemical extraction and changesin temperatures and pressures.Agents you take out of plants for food or processing products may notnecessarily be the ones that are actually in theplants or seeds themselves. They may have been modified." Pl...

Slimy Bacteria Common Cause Of Chronic Infections

...s, urinary catheters, intrauterine devices (IUDs), mechanical heartvalves, penile prostheses, and a variety of other implanted devices orprocedures. The researchers explain the relationship between biofilms andinfections in a review paper titled, "Bacterial Biofilms: A Common Cause ofPersistent Infecti...

Stimulation technique holds new promise for spinal cord injuries

...timuli. "One of the challenges we face is that the mechanical properties of the electrode are very different than the mechanicalproperties of the underlying tissue," Grill said. "The tissue is like cooked pasta and the electrode is like a sewing needle. Ithink the solution is likely to be a conductive polymer."...

Pumping with tiny bubbles

... And because the bubble-powered pump has no moving mechanical parts, it isunlikely to wear out too quickly. "It...ics of bubbles,worked with two other Johns Hopkins mechanical engineering researchers in his lab, Hasan Oguz and He Yuan, to design,build and test a prototype bub...

Computing device to serve as basis for biological computer

...rtment at the Weizmann Institute of Science. The mechanical computer willbe presented today at the Fifth Inte... Massachusetts Institute of Technology. Shapiro's mechanical computer has been built to resemble the biomolecularmachines of the living cell, such as ribosomes. ...

Mechanical forces found to exert larger role in blood vessel health and disease

...attention, but Penn State engineershave shown that mechanical forces, including shear stress, stretch and pressure,can play unsuspected but equivalent roles in some aspects of cardiovascularhealth and disease. Dr. John Tarbell, distinguished professor of chemical engineering, andassociates in Penn State's Biom...

"All my friends dream of artificial limbs": US, Russian nuclear labs work with prosthetics company to develop replacement knee

...bs," says Lieberman. "It involves stress analysis, mechanical testing, reliability testing,microprocessor control, and materials analysis." It also helps out the prosthetics industry, which is dominated by smallcompanies with relatively small technical support. While prosthetic companiescertainly have worked t...

Biology, engineering jointly train students in neuro-mechanics

...ehavior. If these movements fail to translate into mechanical movement, Ritzmann adds, "It also provides the bio...medical engineering; and Roger Quinn, professor of mechanical and aerospace engineering. One of the major barriers to two disciplines collaborating is learning t...

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Breaking Medicine News(10 mins):Health News:Formal Wedding Guest Attire Added to UWDress.com 2Health News:Setria® Glutathione Now Available in Australia 2Health News:Setria® Glutathione Now Available in Australia 3Health News:Lipitor Lawsuit Conference Scheduled for December, Bernstein Liebhard LLP Reports 2Health News:Lipitor Lawsuit Conference Scheduled for December, Bernstein Liebhard LLP Reports 3Health News:SCI Announces New Team Member Roy Baroff 2Health News:SCI Announces New Team Member Roy Baroff 3
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