NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...tion model that included 110 different plant types divided into 12 categories, including needle-leaf evergreen and broadleaf deciduous forests, savanna, shrub land, and desert. The model ranked the vegetation by which plant type was best adapted to which regional climate. It computed how much surface area ea...Animal Studies Indicate Aging Brain Responsive To Estrogen
...nd, thus, were making no estrogen. The researchers divided the rats intothree treatment groups -- those receiving no estrogens, long-term chronicestrogen doses, or a single acute dose of estrogen. After the treatments, they performed microscopic studies that allowed themto determine how the treatments affec...Moving DNA Molecules With Magnetic Tweezers
...ientist to measure the friction coefficient--force divided by velocity--of a single DNA molecule. In 1995, hisfindings were published in Physical Review Letters. He joined thefaculty of Hopkins' WhitingSchool of Engineering two years ago. For his research, Wirtz selected the lambda-phage DNA molecule,found i......effecton life expectancy and mortality rates. They divided their Medfly subjects,including equal numbers of males and females, into two groups: half receivinga sugar-plus-protein diet and half receiving a sugar-only diet. Then theysimply stepped back and counted as the medflies lived out their brief lives. ...Peptic Ulcer Treatment Improves Health, Saves Money
...re the clinical and economic outcomes for subjects divided into two treatment groups. One group received medication to immediately eradicate the H. pylori bacteria. Patients also halted antisecretory maintenance therapy. The second group continued antisecretory maintenance therapy with H. pylori eradicati...Uterine Environment Boosts Learning Ability In Mouse Offspring
...rains of human dyslexics. The embryos were divided into three groups for the experiment. TheNon-Transfer group consisted of BXSB mothers with natural embryo implantation.The In-Strain Transfer group had BXSB mothers with transplanted embryos. And theOut-Strain Transfer group consisted of non-automimm...Small-Scale Fires Key To Understanding Forest Structure
... east and west fromits headwaters. The researchers divided the area into three regions based ondifferences in topography. "In the 20th century, fire suppression has changed the density andspecies diversity of these forests, but differently in each area. Thecontrolling factor seems to be the direction ...Purdue Finding May Snuff Out The Sniffles
... single protein and is shaped somewhat like an arm divided into five sections, or domains, extending from a shoulder that penetrates the cellular membrane. Rossmann's group has solved the structure of the first two domains, which are located at the "hand" end of the molecule where the virus attaches. Each ce...UPMC Reports On New Liver Assist Device
...evice against standardtreatment. The animals were divided into three treatment groups, one receivingstandard intensive care attention, and the remaining two groups being placed onthe bio-artificial liver assist device at either 16-18 hours or 24-26 hoursafter liver failure was initiated. The repor...PSA Levels Mean More Extensive Prostate Disease In Older Men
...ne surgery to remove their prostates. The men were divided into three age groups (40-50, n=69; 51-60, n=227; 61-73, n=196) and five pre-treatment PSA categories: (2.5-4.0, n=36; 4.1-6.0, n=100; 6.1-8.0, n=122; 8.1-10.0, n=76; >10.0, n=135). Patients were considered curable if the cancer was either confin...A New Molecular Marker For Prostate Cancer
...ogression in breast and colon cancer. Researchers divided the 96 tumors into three groups, based on the percent oftumor cells in each sample expressing p27 protein. Fifty-three tumors had highlevels of the protein, with more than 50 percent of tumor cells expressing p27;31 tumors showed moderate levels (bet..."A Little Bit Here" And "A Little Bit There" Can Add Up To A Big Problem
...s Issues in Ecology series. Water pollution can be divided into two categories, point and nonpoint. Pointsources, such as sewage pipes, are much easier to identify and control thannonpoint sources. In contrast, nonpoint sources can be intermittent and spreadover a large area, making them very difficult to ...Monogamy Has Its Rewards For Flies
...ar fruit flieshave gone in this arms race. Holland divided a laboratory population of fliesinto four subpopulations in which females lived in individual vials. In two ofthe subpopulations, each female shared a vial with three males, which competedin the usual way to fertilise her. In the other two s...First Reproducible Cloning Of Mammals From Adult Cells Reported In Nature
... anddevelop normally. After activation, the cells divided repeatedly to reach the multi-cellstage at which an embryo is called a blastocyst. Cells in blastocysts beginto mass in preparation to form the first tissues of an embryonic mouse. "We discovered that a relatively high proportion of the oocytesdevel...Feed A Microbe An Unearthly Dish And You Make Your Own Extraterrestrial
...a diet with 100 per cent fluorotryptophan and have divided forseven generations. Author: Philip Cohen New Scientist issue 1st August, page 14 PLEASE MENTION NEW SCIENTIST AS THE SOURCE OF THIS ARTICLE...Report On Electrical And Magnetic Fields Released; Public Invited To Comment At Regional Meetings
... text of a report from scientists concluding, by a divided vote, thatelectrical and magnetic fields around power lines, home wiring, home appliancesand some industrial uses should be regarded as a "possible" human carcinogenthat needs further research. However, the Institute asked for additional publicand s...Duke Study Helps Explain How Cells Divvy Up Genes During Reproduction
...oesn't form properly, and chromosomes don't end up divided evenlyamong the resulting eggs. A reports on this research, detailing how the Ncdmotor participates in the cell division process that creates eggs, appears inthe September issue of the Journal of Cell Science. The movies can be viewed onthe Internet ......l number of bacteria on Earth, the group atGeorgia divided the Earth into several areas, including oceanic an...imeters of deep ocean sediments. Soil was divided into forest and non-forest types. The researchers thenused detailed direct measurements from two stu...University At Buffalo Team Discovers How The Cell Nucleus Orchestrates Genetic Processes
...ers. The results suggest that the whole genome is divided into subregions in thenuclear architecture and that different regions are activated in a progression."Huge amounts of genetic material are being turned on and off in a grandchoreography both in space and time," said Berezney, "which opens up the idea......frational objectivity itself. The book is divided into a series of studies that use cutting-edgegenetic discoveries to exam topics such as the doctrines of biological science,genetic illnesses, the sovereignty of genes in our daily lives and the ethicalimplications of technological advances in genet...