Greens to shut Berlin reactor

Genes, greens, and homocysteine.

Zip it up to shut it down

DNA double-strand breaks (DSBs) can be lethal to a cell. However, most sexually reproducing organisms deliberately induce a substantial amount of developmentally programmed DSBs that are subsequently repaired via homologous recombination in meiosis. The goal of this self-damage and self-repair process is to establish physical connections between homologous chromosomes, thereby ensuring accurate...

FINE GREENS and FAIRWAYS

mowing. It is run along the ground on one large wheel which is f ree of the motor operat ing the cutter bar. I t can be tilted to cut up or down slopes and can be pivoted sharply in any direction. It has been found part icularly valuable for cutting around trees, boulders, t raps, creek-bottoms, and other golf course obstructions which formerly required hand cutt ing. The motor scythe, powered ...

Eyes open, brain shut.

R E D IT R ecent progress in medical care has greatly increased the number of people who survive acute brain damage. Doctors can save the lives of many patients who suffer trauma to the brain (often after a road accident) or a lack of oxygen (for example, after a cardiac arrest or drowning), but if the damage is severe, the victim will slip into a coma. Individuals in this condition do not open...

Scheduling Jobs Before Shut -

Distributed systems execute background or alternative jobs while waiting for data or requests to arrive from another processor. In those cases, the following shut-down scheduling problem arises: given a set of jobs of known processing time, schedule them on m machines so as to maximize the total weight of jobs completed before an initially unknown deadline. We will present optimally competitive...