University of Colorado archaeologist, colleagues hot on the trail of ancient Persian warships
... living in a ceramic pot 300 feet down had dragged broken pieces of pottery, stones and a bronze spear point...f last resort if the shaft with the iron point had broken or was lost during combat," he said. The researchers were able to get a close-up view of the spear b...Simple sugars make cell walls like steel
...o separate. However, XET hangs onto one end of the broken polymer so when a new cellulose fibril forms to fill the space, the enzyme brings old and new xyloglucans together to relace the cellulose to maintain tensile strength. This process not only allows the cell wall to grow, but also is the way growth is...Research reveals brain has biological mechanism to block unwanted memories
...nford last year. "It's amazing to think that we've broken new ground on this that there is a clear neurobiological basis for motivated forgetting," Anderson said. "Repression has been a vague and controversial construct for over a century, in part because it has been unclear how such a mechanism could be i...Expedition will retrace legendary Steinbeck-Ricketts voyage to the Sea of Cortez
...large size visible, loading trestles, and piles of broken rock." Broken-down trestles and dilapidated buildings are the only visible reminders of this once thriving industry. Today, many people in Santa Rosalia make their livelihoods fishing for squid - not the small variety commonly sold in seafood markets...Chromosomes are 'nibbled' before they fuse, researchers report
...re first nibbled by enzymes that normally clean up broken chromosomes. "The fusion pathway was our favori... exonuclease that normally recognizes and chews up broken chromosomes one strand of DNA at a time. Without the enzyme there were fewer chromosome rearrangemen...New findings implicate cell size controls in a variety of diseases
...chain, a known drug may work to replace missing or broken parts of the biochemical chain. "We were doing basic cell biology, investigating how cell growth is coordinated with the cell's energy level," said Kun-Liang Guan, research professor at the University of Michigan Life Sciences Institute. "We found t...Research sheds new light on evolution
... might require big changes, similar to banging the broken watch a few times before making the final small tweaks to restore its optimal performance," he said. The plants used in the work were produced in a campus greenhouse and then transported to an area near the Yosemite National Park where natural popula...A bird in a tree for biodiversity
...Usambara Mountains where habitat fragmentation has broken a mutual relationship with the birds that distribu... bird species to eat and disperse seed. But in the broken parcels with few trees left, the birds were rare or absent. Seed fell to the ground but didn't regen...Young cancer researchers honored
...CA2 protein is similar to other proteins that bind broken DNA strands, Dr. Pavletich and his colleagues demonstrated that BRCA2 interacts directly with DNA to help repair genetic damage. An inability to correct this damage can lead to cancer. "In a number of prominent cases, the protein structures solved by...Duke researchers discover power behind molecular motors
...hat holds one of the phosphates on the molecule is broken by a process known as hydrolysis. Endow found that during this process of ATP hydrolysis, the coiled-coil region of the motor changed in angle, or conformation. As a result of this conformational change, the coiled-coil region rotates relative to one...New research technique provides unique glimpse into Alzheimer's disease
...Beta that had accumulated before the injection was broken down. Comparing the rate of ABeta degradation in young and old mice, the team found that the half-life of ABeta was about twice as long in older mice. In other words, it takes about twice as long for the soluble, or mobile, pool of brain ABeta to bre...NSF news tips - September 22, 2003
...sing tooth cannot reappear in a later x-ray, but a broken tooth in an early x-ray could have been repaired or crowned. From a large database of dental x-rays, ADIS will produce a short list of a few possible matches with a minimum of human intervention. The results will either contain the matching case o...As autumn approaches, this chickadee's brain begins to expand
..."Often times, the best way to fix something that's broken is to figure how it works when it's not broken."...Cooperation is a no-brainer for symbiotic bacteria
... plant and variousrhizobial strains hasn't already broken down." He noted that such breakdown in cooperation between species can haveserious consequences, as in the case of coral bleaching that resultswhen algae leave or are expelled from the coral....Duke ecologist finds devastation, hope in Iraqi marshes
...s just a complete dust bowl," he said. Locals had broken a Hussein-built drainage dike in one area in an effort to return some water, but "nothing was growing there yet," except for a few remaining desert plants, he added. In another recently re-flooded area, too much salt had been drawn out of the long-dr...Researchers identify new cause of genomic instability
... the indispensable machinery that senses and fixes broken DNA have discovered a new culprit that can induce instability in the genome and thereby set the stage for cancer to develop. Studies in mice have shown that loss of H2AX , a gene that produces a protein called a histone that is part of the chromosom...New discoveries about old-growth forests
...owns by growing new branches to replace damaged or broken branches (epicormic branch initiation). In some old-growth forests fire suppression has resulted in an uncharacteristically high buildup of fuels, whereas in other old-growth forests fire suppression has had little or no impact on fuels because fuel...Emory scientists find anti-tumor compounds in magnolia cones
...g because in mice it appears not to be excreted or broken down by the liver too quickly. But it is too soon at this point for clinical trials. "We need to investigate the pharmacokinetics in larger animals first, in a collaboration." Dr. Arbiser says. If further research on honokiol looks promising, a pha...University of Rochester scientists test new method to attack cancer
...ssibility that RNA injected into the body could be broken down by enzymes before it reaches a patient's cancer cells. Rowley plans a new series of experiments in mice to explore that possibility and devise a strategy to overcome it....