Tag: "systems" at biology news
Chickadee, nutchatch presence in conifers increases tree growth, says CU-Boulder study
...tudy indicates that pine canopies are very complex systems
with an unexpected level of biodiversity," said Mooney. "Forest managers really need to look at the big picture of ecosystems and not just focus on trees when implementing regulations aimed at encouraging the growth of healthy forests." The study...
Marijuana component opens the door for virus that causes Kaposi's sarcoma
...autionary evidence that those with weakened immune systems
should speak with their doctors before using marijuana medicinally or recreationally. These findings raise some serious questions about using marijuana, in any form, if you have a weakened immune system, said lead study author Jerome E. Groopman, ...
Altering a protein makes mice less fearful
...s protein may be a critical component of the brain systems
that underlie innate fear. The UI team, led by J...ide effects than existing treatments, which affect systems
throughout the brain, not just those involved in the fear response. "Current treatments for anxiet...
Phase II study of therapeutic vaccine shows efficacy in patients with metastatic colorectal cancer
...rapeutic vaccine, designed to stimulate the immune systems
of patients who already have cancer. The vaccine consists of an attenuated (non-disease causing) version of the vaccinia virus modified to deliver the gene for 5T4, a protein found in many tumors. The idea is that the modified virus enters cells, ...
Taming the anthrax threat
... causes anthrax, while it sneaks inside the immune systems
first-responder cells in the lungs, called macrophages, and begins to multiply. The work is a significant advance because it will make it much easier to identify precise new targets for better anthrax drugs and vaccines, says Bergman, a research assi...
Handicapping tuberculosis may be the way to a better vaccine
...re gives scientists a magnified view of the immune systems
response. Although both strains of TB produce the same amount of peptide, Jacobs expected infection with the apoptosis-inducing strain to elicit a more dramatic immune response. The researchers observed that cytotoxic T lymphocytes (CTLs), which are...
Testing the force of a shark's bite
...le for damaging submarine cables and communication systems
on US Navy submarines. ...
Particle emissions from laser printers might pose health concern
...lly we were studying the efficiency of ventilation systems
to protect office settings from outdoor air pollutants. We soon realized that we were seeing air pollution originating indoors, from laser printers. The study found that indoor particle levels in the office air increased fivefold during work hours ...
UF to lead research on life-threatening fungus
...990s, Wingard said, and those with weakened immune systems
are particularly susceptible. Aspergillosis is the... cases after the organism contaminated ventilation systems
or fireproofing materials. Despite hospitals' infection control measures aimed at minimizing risks, ...
Geisinger scientist seeks cure for Lou Gehrig's disease, creating device to find treatment
...itness. Geisinger Ventures, which is the health systems
corporate development arm, arranged the partnership between Gerhard and the Bucknell team. Ventures is now seeking a corporate partner willing to license the invention for production and distribution. Geisinger Ventures nurtures innovative ideas...
Using stem cells to help heart attack victims
...lysis and they plan to use new 'electrophysiology' systems
to record changes in the cells when cultured. Electrophysiology is the study of cells' electrical properties and this is the first time that the method has been used in the UK to study stem cell-cardiomyocyte biology. Dr Denning added: "This resear...
System to analyze beating heart stem cells could lead to heart attack treatments
...nalysis and they plan to use new electrophysiology systems
to record changes in the cells when cultured. Electrophysiology is the study of cells electrical properties and this is the first time that the method has been used in the UK to study stem cell-cardiomyocyte biology. This research will enable rapid...
Wild weather forces farmers to adapt
...ore making the change to a more adaptable cropping systems
strategy, researchers say its important to underst...tion risks from plant diseases in diverse cropping systems
How to maintain an amount of crop residue under no-till to optimize agronomic benefits while mini...
Seawater intrusion is the first cause of contamination of coastal aquifers
...s contaminating some of the most important aquifer systems
in economic terms, both on the Mediterranean and the Atlantic coastlines. In the world, the most affected areas include Mexico, the North of the Pacific and Atlantic coastlines, Chile, Peru and Australia. Solutions: prevention and control A goo...
Prenatal stress keeps infants, toddlers up at night, study says
...d sleep doesnt come easily to kids whose signaling systems
may not be properly calibrated, OConnor said. However, more research is needed to monitor this signaling pathway more closely, watching for biological hints as to why sleep and behavioral disturbances so often crop up together. In the meantime, pre...
The inside dope
...t that the remaining impurities did not affect the systems
electrical behavior. The scientists doped the 'clean' monolayers by irradiating the surface with UV light or weak electron beams, changing chemical bonds between the carbon atoms that make up the molecular layer. These bonds ultimately influenced e...
Boston Univeristy bioengineers devise 'dimmer swith' to regulate gene expression in mammal cells
...which rests on the premise that complex biological systems
can be built by arranging components or standard p...otein. I was delighted to see that when the two systems
are coupled, it is possible to completely turn a genes function off, said Deans. This switch is a...
Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily
...lls, so it will be exciting to look at other viral systems
with our experimental method, she said. Many different viruses could enter cells by efficiently lowering the energy required to penetrate a cells outer membrane, according to Tristram-Nagle and her collaborator, John Nagle, professor of physics and ...
Study finds contaminated water reaching Florida's offshore keys
...es of sewage pollution such as cesspits and septic systems
may be a significant contributor. Genetic mate...said the installation of new wastewater management systems
such as centralized collection and advanced wastewater treatment facilities, as recommended by the W...
American Chemical Society's Weekly PressPac -- July 18, 2007
...rovide a blueprint for designing future locomotion systems
for artificial cells, the scientists suggest. ARTICLE #1 FOR IMMEDIATE RELEASE Fatty Acid Chemistry at the Oil-Water Interface: Self-Propelled Oil Droplets WATCH VIDEO The oil droplet shown in this short video has been endowed by scientists with...
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