Tag: "insulating" at biology news

Climate change and permafrost thaw alter greenhouse gas emissions in northern wetlands

...r south than in other boreal ecosystems due to the insulating qualities of peat. So we have argued that these ecosystems serve as a very sensitive indicator of climate change, Turetsky said. What will happen to peatlands when climate change disrupts these frozen layers, or perhaps more importantly what will ha...

First new multiple sclerosis gene found in 30 years

...nown as myelin, acts much like the plastic coating insulating an electrical cord. For reasons that are not well understood, the bodys own immune system is believed to attack the myelin, which can cause short circuits in the bodys electrical system. This leads to the symptoms of the disease, which include musc...

Scientists discover new way to study nanostructures

... weakly linked superconductors separated by a thin insulating barrier (an arrangement now known as a Josephson junction), an alternating electrical current would flow through the junction (imagine turning on a water faucet and having the water start flowing up as well as down once it leaves the spigot). The fre...

Weizmann scientists discover a new line of communication between nervous system cells

...the protective covering surrounding the nerves an insulating material called myelin is damaged. Scientists at the Weizmann Institute of Science have now discovered an important new line of communication between nervous system cells that is crucial to the development of myelinated nerves a discovery that may...

Deactivating protein may protect nerve fibers in MS

...lls in the body to attack myelin, the fatty sheath insulating nerve fibers in the brain and spinal cord. The fibers can't conduct impulses, leading to paralysis, memory loss, dizziness, fatigue, pain and imbalance. Over time, the nerve fibers themselves degenerate, leading to permanent functional deficits. "A...

Super small nanoelectrodes can probe microscale environments

...rger, conductive probe. The nanotube will form the insulating core of the nanoelectrode. The researchers then co...of a meter.) The gold layer is then coated with an insulating polymer coating about 10 nanometers thick. Lastly, the researchers use a focused ion beam to slice o...

Brain works more chaotically than previously thought

...t this is not the case." The messenger attracts insulating cells Together with his colleagues Dr. Maria Ku...apid retransmission of signals. "It is likely that insulating cells are guided by the glutamate to locate axons and envelope them in a layer of myelin," says Dirk...

ACS News Service Weekly PressPac -- February 14, 2007

...rial deposited, or "printed," on the surface of an insulating board. They contain materials potentially toxic if released to the environment. However, PCBs also are a rich potential source of valuable metals and other materials that could be recovered and reused. The researchers describe tests of their proces...

Movies reveal that the process of insulating nerves is surprisingly dynamic

...in the nervous system is protected by layers of an insulating protein called myelin. These layers increase the speed that nerve impulses travel throughout the brain and the body. The critical role they play is dramatically illustrated by the symptoms of multiple sclerosis, which is caused by lesions that destro...

Major breakthrough in the mechanism of myelin formation

...trical wire needs insulation, our axons require an insulating sheath (myelin) that helps to propagate the electrical signal and maximize the efficiency and velocity of these signals in our brain and body. It is this property (myelination) that facilitates the long-distance communication in our nervous system ac...

Acorda announces positive Phase 3 Fampridine-SR study in people with multiple sclerosis

...serve and speed these nerve signals, much like the insulating cover of an electrical cord helps preserve the transmission of electricity. In MS, the myelin becomes damaged and the axon cannot effectively transmit electrical impulses. Specifically, the damaged myelin exposes channels in the membrane of the ax...

Ancient birds flew on all-fours

...ructures on the hind limbs, they were dismissed as insulating body feathers that didn't play a role in the animal's flight. It wasn't until several four-winged dinosaurs in China were described in 2002 that researchers began to re-examine Archaeopteryx's legs. "The idea of a multi-winged Archaeopteryx has been...

Alleviating the burden of Multiple Sclerosis

...uit - the axons of our nerves are surrounded by an insulating layer. In MS this protective sheath, made up of a mixture of lipids and proteins called myelin, gets destroyed by cells of our own immune system, and the communication between nerve cells gets disrupted. A central player in the molecular mechanisms b...

How plants avoid feeling the burn

...ture. Other innovations included developing a new insulating coat of polyethylene for the probe tip of a Scanning Tunneling Microscope (STM), which is used to measure the electron flow across single molecules. Also, the chemical ends of the carotenoids had to be modified so they could chemically stick to the S...

Story tips from the Department of Energy's Oak Ridge National Laboratory, June 2006

...ud was also found to demonstrate improved acoustic insulating properties, preventing wall transmitted vibrations or sounds that are heard with a conventional steel stud. The Insul-Stud's design minimizes and disrupts heat flow horizontally and vertically, which also creates the sound dampening qualities. Testin...

APS physics tip sheet #62

...ir refrigerator that consists of a rod piercing an insulating membrane. One end of the rod has an arrangement of flat paddles, much like those on a paddle wheel boat. On the other end the paddles are replaced with wedge shapes. Left to itself, the structure will spin, provided the molecules surrounding the wedg...

Potential new treatment strategy for Alzheimer's disease and other brain and spinal cord damage

...in the centralnervous system that form myelin, the insulating sheath surrounding nervecells. Normally, oligodendrocytes die when exposed to proneurotrophins -precursor forms of neurotrophins that have been implicated as agents oftissue damage in multiple sclerosis, spinal cord injury and Alzheimer'sdisease. "Th...

Hopes raised for effectiveness of multiple sclerosis drug

...elin sheath that protects the nerves. "Without the insulating cover, the nerve axons short-circuit, much like a damaged electric cord might," says Dr. Bielekova, director of UC's Waddell Center for Multiple Sclerosis. "Also, many nerve cells (neurons) do not survive without myelin sheath." It was also believed ...

New test of snow's thickness may 'bear' results key to polar climate studies, wildlife habitat

...ion between the water and the atmosphere. A thick insulating blanket of snow can also be vital to polar bears a...allow snow to drift around their bodies to form an insulating layer of warmth. The less snowfall on the sea ice the less snow polar bears have to build their dens...

New 'stars' in formation of nerve cell insulation

The insulating myelin sheath enwrapping the cable-like axons of nerve cells is the major target of attack of the immune system in multiple sclerosis. Such attack causes neural short-circuits that give rise to the muscle weakness, loss of coordination, and speech an...

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(Date:10/18/2014)... Berlin, 19th October 2014 Psychological stress and stress-related ... for aging-related diseases, but the molecular mechanisms ... mechanisms may contribute to the development of ... treatments for these devastating diseases. This work ... Neuropsychopharmacology congress in Berlin., Now an international ...
(Date:10/18/2014)... suspected genetic conditions, a certain type of exome sequencing ... than traditional molecular diagnostic methods, according to a study ... released to coincide with the American Society of Human ... protein­coding region of the genome (the complete set of ... organism), has been rapidly applied in research settings and ...
(Date:10/17/2014)... German . ... in order to reproduce? And why are there two sexes ... latest issue of the research journal Molecular Human Reproduction ... Ramm from Bielefeld University Bielefeld has compiled this special issue ... a female to copulate with several males in quick succession ...
Breaking Biology News(10 mins):Researchers find why depression and aging linked to increased disease risk 2Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3Sperm wars 2
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