Metab2MeSH: annotating compounds with medical

Subject Headings provides just what the title proclaims—exactly that which is essential to the topic. More compre-hensive books have been written on the

provides coverage of the world's technical literature on storing, processing, and accessing information. The database provides fast, organized access to the latest theoretical research and practical applications from around the world. SUBJECT COVERAGE Major areas of coverage include:

at the beginning an abstract, followed by the keywords. All manuscripts are subject to anonymous review by three independent reviewers. Every letter will be answered.

A P3M (Particle-Particle, Particle-Mesh) algorithm to compute the gravitational force on a set of particles is described. The gravitational force is computed using Fast Fourier Transforms. This leads to an incorrect force when the distance between two particles is of the order of a grid cell. This incorrect force is subtracted exactly from all particles in parallel using convolution with the appropriate Green’s function in real space in a time of order NT, irrespective of the degree of clustering of particles. Next, the correct 1/r 2 force is added for all neighbouring particles in parallel, leading to an accurate algorithm which runs efficiently on a highly parallel computer. A full force calculation for 128k particles on a 128 3 grid in a mildly clustered situation requires approximately 196 seconds on a 8k Connection Machine 2 with 8MHz clock. This decreases to an estimated 9.8 seconds on a full-sized 64k CM200. 1

workershaveattemptedtomeasurethebulkowofthenearbyuniverseoutto Bymeasuringthetransversevelocitiesonecouldtestthisassumption.Several variousredshiftlimitsfrom3000to15,000kms�1(Courteauetal.1993;Mould velocityeld(includingthetransversecomponents)frommeasurementsofpeculiar radialvelocities,providedthatoneassumesthatthevelocityeldisirrotational. thesebulkowvelocities. failedtondavolumesucientlylargethatitisstationarywithrespecttothe etal.1993;Lauer&Postman1994).Inparticular,theyhavesoughtbutsofar measurementoftransversevelocitieswouldyieldanindependentdeterminationof cosmologicalreferenceframedenedbythemicrowavebackgroundradiation.The proportionaltothedistance.Thus,evenifthedistanceerrorsareonly6%as parisonofaredshiftwithadistanceasdeterminedfromadistanceindicator.This approachhastwointrinsicdrawbacks.First,sincethedistanceerrorsareproportionaltothedistance,thefractionalerrorsinthepeculiarvelocityarealso Inaddition,allpeculiarradialvelocitymeasurementsarebasedonthecom-

Para citar este documento, utilizar las informationes siguientes:

I. What should I consider as I prepare my comments for EPA? When submitting comments, remember to: 1. Identify the rulemaking by docket number and other identifying

"Medical-marijuana supporters say that any ill person who could benefit from marijuana should be able to use it. But others say that there is no evidence that marijuana is medically useful and that there are plenty of alternative therapies that patients can use to alleviate pain. Opponents claim that marijuana is an addictive substance that can cause mental problems and possibly permanent brain damage."

2. Bacteria..................................................................................................... 4 2.1 Cell cycle control and morphogenesis in Caulobacter crescentus.................... 4 2.2 Sporulation and differentiation in Bacillus subtilis........................................... 9