Does a vegan diet have a moral basis?
...le population. Mortality rates increase with every pass of the tractor to plow, plant, and harvest. Additions of herbicides and pesticides cause additional harm to animals of the field. In contrast, grazing ruminants such as cattle produce food and require fewer entries into the fields with tractors and o...Traits link viruses from common cold to HIV
...ide a protein coat. Their goal is to reproduce and pass along their genes using the reproductive machinery of the cells they invade to make virions, infectious particles that act like seeds to infect other cells. The parallel features discovered by the Wisconsin team involve the mechanisms by which viruse...New process by Temple grad student can place loose fossils back into the strata or determine fakes
... the bones of a newer species of bird and tried to pass it off as a very important new species, says Patrick, a native of Northeast Philadelphia. The archeoraptor would have been considered a major find, but it happens more frequently with smaller fossils, she adds. It happens on a daily basis with thin...Novel gene therapy approach in 1st human trials
...y bind strands of DNA so that it is tiny enough to pass into the cell and then into the nucleus. Once inside a cell, researchers hope that the DNA will produce the normal version of the protein needed by cystic fibrosis patients. Thirteen years ago, scientists discovered the cystic fibrosis (CF) gene. T......xia is vital to the safety of naval aviatorsif you pass out, you cant fly the airplaneand so its an important training point at Pensacoloa and in aviation units. In the past, aviators have been given hypoxia familiarization by being put into a pressure chamber that simulates the low atmospheric pressure ...Prescription drug pollution may harm humans, aquatic life
...s are not rendered biologically harmless when they pass through the body, Johns Hopkins researchers say. Conventional sewage treatment systems may not remove them, and unused drugs may be flushed down the toilet or thrown into the trash, ultimately ending up in groundwater or surface water, where they may...Scientists document water molecule movement across cell walls
...ted. The simulations revealed that water molecules pass the channel single-file. Upon entering, the water molecules face with their oxygen atom down the channel. Midstream, they reverse orientation, facing with the oxygen atom up. While passing through the channel, the ballet of water molecules streams ...Protecting drinking water from disease transmission by means of zeolite filters
...rigid, serving as a filter through which water can pass freely. Zeolites possess a negative surface charge, which limits their natural ability to attract viruses. In order to reverse this charge, the scientists treated zeolites with a chemical, abbreviated HDTMA (hexadecyltrimethylammonium), which is fou...Disorder forces DNA molecules out of tight spaces
... up against an opening too small for the sphere to pass through, some small part of the chain is first pulled into the opening, causing the rest to uncoil and follow. In these experiments the DNA molecules are pulled into the dense array of pillars by an electric field. If the field is removed before a ...Study examines the potential risks of smallpox vaccination
...s a live virus, a recently vaccinated person could pass the smallpox vaccine virus to a vulnerable unvaccinated person, potentially leading to death or serious illness. To prevent this, the researchers recommend that people in close contact with high-risk individuals should not be vaccinated. As a result ...New technique to make gene therapy more efficient
...ng DNA in fatty globules called liposomes that can pass through the membranes round cells. But simply gett...anometres in size, most liposomes are too large to pass through the tiny pores in the nuclear membrane except when the membrane breaks down during cell divi...Mathematical model provides new tool to assess mail-borne spread of anthrax
...pores can leak from the original envelopes as they pass through the high-speed sorting machines used in the regional postal facilities and can contaminate hundreds to thousands of other letters passing through the facility at the same time. A plausible mechanism for release of the spores from the interior...Physics tip sheet #13 May 15, 2002
...ious pasta phases as it cools. The matter seems to pass through a series of phases starting from uniform matter and heading through spherical, cylinder-like, slab-like phases and then as more uniform matter with holes that are cylindrical and then spherical before the whole lot becomes uniform again at a ...'Warm to the touch' gene found
...it senses a certain temperature and allows ions to pass through and cause an electrical potential that signals the brain. "This protein may be an important target for drugs," says Patapoutian, "because, like other TRP channels, it may be involved in inflammation and pain-mediation." Significantly, TRPV3 i...Researchers solve killer protein's 'crime'
...l therapeutic derivatives of it that could readily pass into tumor cells. Says Steller, "Since the survival of certain tumor cells appears to depend on high-level over-expression of certain IAPs, reducing these abnormally high protein levels with a Reaper-like drug should selectively kill these tumors ...'Nature' report: Researchers genetically alter mosquitoes to impair malaria transmission
...mations before taking a form that the mosquito can pass on by biting another person. Jacobs-Lorena explained that when a mosquito feeds on an infected individual, the parasite reproduces in the mosquitos midgut and takes the form of an ookinete. The ookinetes then move through the epithelial layer of the ...Reactor reveals hidden life of rocks
...re major components of living things. But they can pass right through a steel container. In contrast, water and most living tissue are fairly transparent to X-rays, but X-rays are stopped by heavier elements. That means that neutron beams can be used to scan a Martian rock for traces of life even while it...NSF invites media to report on U.S.-sponsored Antarctic research (2002-2003 season)
...on and food in Antarctica. Medical: Finalists must pass comprehensive physical and dental exams conducted at their own expense by their personal physicians and dentists and subject to screening by the U.S. Antarctic Program. Certain medical conditions may disqualify a candidate from visiting Antarctica, ...Abnormal chemical bonds cause bleeding disorder
...d the protein von Willebrand factor (vWF) normally pass like strangers in the night until an artery is injured. Then, they recognize one another and latch together to form a blood clot and prevent further bleeding. In a few people, though, the two "embrace" prematurely, leading to a bleeding disorder kno......that the decision may encourage other countries to pass similar laws. "In the current state of knowledge that would be disastrous for women."...