Efficacy of chlorfenapyr (AC 303630) experimental pour-on and CyLence formulations against naturally acquired louse infestations on cattle in New York     

Kaufman PE  Rutz DA  Doscher ME  Albright R 《Veterinary parasitology》2001,97(2):123-129

The four chlorfenapyr formulations examined provided 100% control of both the nymphal and adult stages of naturally acquired Bovicola bovis (L.) on cattle up to 35 days after application. Treatment with 6mg chlorfenapyr per kg BW in a 0.12ml per kg BW formulation was as effective as treatment with CyLence (cyfluthrin) in controlling naturally acquired Solenopotes capillatus (Enderlein) on cattle for 35 days. Percent reduction was never greater than 90% with any chlorfenapyr application against Linognathus vituli (L.). However, percent reduction was greater than 90% with CyLence from day 21 through 35. No adverse effects were noted on cattle from any of the chlorfenapyr dosages used.  相似文献   

Human CSF-1: molecular cloning and expression of 4-kb cDNA encoding the human urinary protein   总被引：43，自引：0，他引：43  

G G Wong  P A Temple  A C Leary  J S Witek-Giannotti  Y C Yang  A B Ciarletta  M Chung  P Murtha  R Kriz  R J Kaufman 《Science (New York, N.Y.)》1987,235(4795):1504-1508

A 4-kilobase complementary DNA (cDNA) encoding human macrophage-specific colony-stimulating factor (CSF-1) was isolated. When introduced into mammalian cells, this cDNA directs the expression of CSF-1 that is structurally and functionally indistinguishable from the natural human urinary CSF-1. Direct structural analysis of both the recombinant CSF-1 and the purified human urinary protein revealed that these species contain a sequence of at least 40 amino acids at their carboxyl termini which are not found in the coding region of a 1.6-kilobase CSF-1 cDNA that was previously described. These results demonstrate that the human CSF-1 gene can be expressed to yield at least two different messenger RNA species that encode distinct but related forms of CSF-1.  相似文献   

Hurricane Allen's Impact on Jamaican Coral Reefs     

Woodley JD  Chornesky EA  Clifford PA  Jackson JB  Kaufman LS  Knowlton N  Lang JC  Pearson MP  Porter JW  Rooney MC  Rylaarsdam KW  Tunnicliffe VJ  Wahle CM  Wulff JL  Curtis AS  Dallmeyer MD  Jupp BP  Koehl MA  Neigel J  Sides EM 《Science (New York, N.Y.)》1981,214(4522):749-755

Coral reefs of north Jamaica, normally sheltered, were severely damaged by Hurricane Allen, the strongest Caribbean hurricane of this century. Immediate studies were made at Discovery Bay, where reef populations were already known in some detail. Data are presented to show how damage varied with the position and orientation of the substraturn and with the shape, size, and mechanical properties of exposed organisms. Data collected over succeeding weeks showed striking differences in the ability of organisms to heal and survive.  相似文献   

Different Red Light Requirements for Phytochrome-Induced Accumulation of cab RNA and rbcS RNA     

Kaufman LS  Thompson WF  Briggs WR 《Science (New York, N.Y.)》1984,226(4681):1447-1449

  相似文献   

A whiff of oxygen before the great oxidation event?   总被引：1，自引：0，他引：1  

Anbar AD  Duan Y  Lyons TW  Arnold GL  Kendall B  Creaser RA  Kaufman AJ  Gordon GW  Scott C  Garvin J  Buick R 《Science (New York, N.Y.)》2007,317(5846):1903-1906

High-resolution chemostratigraphy reveals an episode of enrichment of the redox-sensitive transition metals molybdenum and rhenium in the late Archean Mount McRae Shale in Western Australia. Correlations with organic carbon indicate that these metals were derived from contemporaneous seawater. Rhenium/osmium geochronology demonstrates that the enrichment is a primary sedimentary feature dating to 2501 +/- 8 million years ago (Ma). Molybdenum and rhenium were probably supplied to Archean oceans by oxidative weathering of crustal sulfide minerals. These findings point to the presence of small amounts of O2 in the environment more than 50 million years before the start of the Great Oxidation Event.  相似文献   

Measurement of the effect of Amazon smoke on inhibition of cloud formation   总被引：3，自引：0，他引：3  

Koren I  Kaufman YJ  Remer LA  Martins JV 《Science (New York, N.Y.)》2004,303(5662):1342-1345

Urban air pollution and smoke from fires have been modeled to reduce cloud formation by absorbing sunlight, thereby cooling the surface and heating the atmosphere. Satellite data over the Amazon region during the biomass burning season showed that scattered cumulus cloud cover was reduced from 38%in clean conditions to 0%for heavy smoke (optical depth of 1.3). This response to the smoke radiative effect reverses the regional smoke instantaneous forcing of climate from -28 watts per square meter in cloud-free conditions to +8 watts per square meter once the reduction of cloud cover is accounted for.  相似文献