Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
...f its rings with those from a piece of wood from a building you know was built in 1860. You keep doing the same with earlier and earlier samples of wood." While the researchers stress that they have not yet achieved an absolute chronology, they believe their latest findings have brought them considerably clo...Bark Beetle Infestation Spurs Multifaceted Study
...troops during the Civil War. Working in the mines, building the roadsand cutting the wood were a conglomerate of immigrants. Included among theseworkers were large numbers of Chinese laborers. "The archaeologists don't want to disturb the archaeological sitesor destroy the tree stumps which can give them in...Low-Protein Diet May Reverse Kidney Disease
...hs. Essential amino acids are those amino acids -- building blocks of protein -- that the body can not make. K... included supplemental tablets of amino acids, the building blocks of protein. "We still don't know the mechanism for this surprising result," says Walser. "Evi...Researchers Identify A New Cellular Structure: The "Dumposome"
... is the part of the nucleusthat is a workbench for building ribosomes," adds James Smothers, a graduate student in Allis' lab. "We now know thatthe structure is unique with a distinct function -- which could make it an organelle in its own right." Although it has only one cell, the mature Tetrahymena has...Fast Measurement Technique Reveals Early Steps In Protein Folding
... acids quickly curl into helixes --the fundamental building blocks of proteins. In the second phase, whichtakes three to four microseconds, the helixes "hunt for and hook into"their appropriate locations in the protein chain, Gruebele said. At thatpoint, the collapse phase of the folding process is complete. ...New Sensor Provides First Instant Test For Toxic E. coli Organism
...molecule similar to the phospholipids that are the building blocks for cellmembranes. Exposure to UV light links the molecules together by activating atriple bond within the diacetylene lipids, creating a blue-tintedpolydiacetylene (PDA) film. PDA films are sensitive to changes on their surfaceas manifested ...Scientists Identify Gene For Sexual Behavior In Male Flies
... more than 80 years tolearn how genes instruct the building of the fly's body and the functionof its cells, and insights from that work have already helped explainhow the human body develops. "In any complex organism, brain formation and function must becontrolled in part by genes," Hall said. "The question ...Learning From Birds And Bees: Engineers Study Insects For Ideas On Tiny "Micro Air Vehicles"
...jectsAgency (DARPA). The technical challenges of building such airvehicles will be the focus for a two-day c...dinterdisciplinary expertise will be successful in building them. "We're not really sure what will turn out to be the most difficultchallenge," he added. "Nob...Isle Royale Moose Continue Decline
...le of years, the park's wolves have been gradually building their numbers. Peterson says there are 24 wolves on Isle Royale now, and that's two more than last year and 12 more than the all time low of 12 recorded in 1988-89 and again in 1991-92. "Seven pups survived from last year's litters, so despite five d...Scientists Trace Roots Of Protein That Keeps Antarctic Fish From Freezing
... new protein," she said. "Thenew protein came from building from the ground up a very short sequencein the middle, and going through repeated duplications to form the buildingblocks of the antifreeze glycoprotein." Coauthor Arthur L. DeVries, who discovered the first antifreeze proteinin Antarctic fish in th...Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
...ng that objects about the size of a small house or building will showup as only one or two dots in the images. That's detailed enough to show the heat patterns in the city. ATLAS lets scientists see how different objects reflect or absorb and emit heat. It's related to the gre...Everyday Technology Underlies First DNA Computer Logic Gates
...rate and efficient DNA computation. The building blocks of all today's computers, logic gates are ...ssibilities, since they mark the first step toward building a DNA computer that would perform calculations in the same way as electronic computers. These gate...Ozone 'Chat Room' Provides Real-Time Air-Quality Research
...of which those who face the biggest sanctions. By building consensus beforehand, the stakeholders generally will agree to the basic principles of management decisions before they are implemented. "Second, the interactive Internet approach has altered the way environmental research itself is done. Much wa...Second Look Acquits Gene Of Role In Breast Cancer
...acid orRNA, which later is used as a blueprint for building a protein," he explains."But the string ofRNA coding for the protein is normally interrupted at several points by codingthat is not part ofthe protein. Before the cell can use it, it has to clip out these pieces. Andit's in this splicing'process t...UW Smogmobile Offers Cleaner, Safer Alternative To Gas Or Electric Cars
... gas expands the volume of the nitrogen 700 times, building sufficient pressure to turn an air motor much like pressure from burning gasoline drives an internal combustion engine. One major difference, however, is that gasoline is a non-renewable resource so internal combustion engines have become more effici......equences (EGS). Nucleotides are the basicchemical building blocks of genetic material. EGSs are engineered to bind totargeted "messenger RNA" (mRNA), a family of compounds that play a key role incontrolling body chemistry. Once the EGS molecules attach to their target in aspecific virus or bacteria, they c...Scientists Discover How Genes Work Together To Control Neural Development
...ays received positive signals, but now evidence is building at a rapidrate that the message often carried by the signal-transduction pathwayis 'kill the gatekeeper,'" Carthew says. "Many vertebrate proteins, some known to be involved in cancers,carry a structural feature similar to the Tramtrack protein," L...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
...idea that a common set of genes is responsible for building appendages not only simplifies evolutionary history, but helps explain the great burst of evolutionary activity known as the Cambrian explosion. This "evolutionary big bang" took place in the world's oceans more than 500 million years ago when new a...Newly Discovered Human Protein Provides Important Target For Cancer Therapy
... quickly isolated the humangene. The order of the building blocks of all three proteins is remarkablysimilar. In addition, the Whitehead studies revealed a strong association betweenthe presence of the hEST2 message and telomerase activity; both are present inimmortal transformed cells and absent...E. Coli Genome Reported: Milestone Of Modern Biology Emerges From Wisconsin Lab
...ife. In addition to the base order of the chemical building blocks that make up theE. coli genome, and a better sense of its evolution and relationship to otherorganisms, the work of Blattner's team has yielded a lode of new information about the organization of E. coli genes and how the information stored th...