Long-Term Mean Vertical Motion over the Tropical Pacific: Wind-Profiling Doppler Radar Measurements     

Gage KS  McAfee JR  Carter DA  Ecklund WL  Riddle AC  Reid GC  Balsley BB 《Science (New York, N.Y.)》1991,254(5039):1771-1773

Measurement from Christmas Island (2 degrees N, 157 degrees W) of long-term mean vertical motions in the tropical atmosphere using very-high-frequency wind-profiling Doppler radar show that there is a transition from downward motion in the free troposphere to upward motion in the upper troposphere and lower stratosphere. The observations in the free troposphere are consistent with a balance between adiabatic and diabatic heating and cooling rates in a clear atmosphere. Comparison of the results at Christmas Island during El Ni?o and non-El Ni?o conditions with earlier results obtained for stratiform rain conditions over Pohnpei, Federated States of Micronesia, show that cirrus clouds in the vicinity of the tropopause likely play an important role in determining the sense and magnitude of vertical motions in this region. These results have implications for the exchange of mass between the troposphere and stratosphere over the tropics.  相似文献   

Genetically determined sex-reversal in 46,XY humans   总被引：6，自引：0，他引：6  

J German  J L Simpson  R S Chaganti  R L Summitt  L B Reid  I R Merkatz 《Science (New York, N.Y.)》1978,202(4363):53-56

Evidence is presented for the existence of a gene, probably on the X chromosome, which prevents testis differentiation when present in 46,XY human embryos. Affected 46,XY women are not completely normal because of premature ovarian involution, as a result of which they have "streak gonads" similiar to those of 45,X women.  相似文献   

The Polysulfides in Levinstein Process Mustard Gas     

Macy R  Jarman GN  Morrison A  Reid EE 《Science (New York, N.Y.)》1947,106(2755):355-359

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Mutations in dynein link motor neuron degeneration to defects in retrograde transport     

Hafezparast M  Klocke R  Ruhrberg C  Marquardt A  Ahmad-Annuar A  Bowen S  Lalli G  Witherden AS  Hummerich H  Nicholson S  Morgan PJ  Oozageer R  Priestley JV  Averill S  King VR  Ball S  Peters J  Toda T  Yamamoto A  Hiraoka Y  Augustin M  Korthaus D  Wattler S  Wabnitz P  Dickneite C  Lampel S  Boehme F  Peraus G  Popp A  Rudelius M  Schlegel J  Fuchs H  Hrabe de Angelis M  Schiavo G  Shima DT  Russ AP  Stumm G  Martin JE  Fisher EM 《Science (New York, N.Y.)》2003,300(5620):808-812

Degenerative disorders of motor neurons include a range of progressive fatal diseases such as amyotrophic lateral sclerosis (ALS), spinal-bulbar muscular atrophy (SBMA), and spinal muscular atrophy (SMA). Although the causative genetic alterations are known for some cases, the molecular basis of many SMA and SBMA-like syndromes and most ALS cases is unknown. Here we show that missense point mutations in the cytoplasmic dynein heavy chain result in progressive motor neuron degeneration in heterozygous mice, and in homozygotes this is accompanied by the formation of Lewy-like inclusion bodies, thus resembling key features of human pathology. These mutations exclusively perturb neuron-specific functions of dynein.  相似文献   

CHARACTERS,CONGENITAL AND ACQUIRED     

Reid GA 《Science (New York, N.Y.)》1897,6(155):896-902

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'THE PRESENT EVOLUTION OF MAN.'     

Reid GA 《Science (New York, N.Y.)》1897,6(140):368-372

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Ecology. Ecology for a crowded planet     

Palmer M  Bernhardt E  Chornesky E  Collins S  Dobson A  Duke C  Gold B  Jacobson R  Kingsland S  Kranz R  Mappin M  Martinez ML  Micheli F  Morse J  Pace M  Pascual M  Palumbi S  Reichman OJ  Simons A  Townsend A  Turner M 《Science (New York, N.Y.)》2004,304(5675):1251-1252

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Phase chemistry, structure, and radiation effects in lunar samples     

Arrhenius G  Asunmaa S  Drever JI  Everson J  Fitzgerald RW  Frazer JZ  Fujita H  Hanor JS  Lal D  Liang SS  Macdougall D  Reid AM  Sinkankas J  Wilkening L 《Science (New York, N.Y.)》1970,167(3918):659-661

Phase chemistry, structure, and radiation effects were studied in rock, breccia, and soil samples. The regolith apparently developed in the final stages of accretion and was modified by later impact processes and radiation weathering. Exposure ages indicate transfer of buried igneous rock fragments to the near surface late in lunar history. With a few exceptions igneous rock fragments, soil, and breccia share the same distinctive chemistry, probably acquired before accretion of the moon. The igneous rocks texturally resemble basaltic achondrites, and the soil and breccias contain glassy spheres analogous to chondrules.  相似文献   

Status of Storm-Tide Research     

Reid RO 《Science (New York, N.Y.)》1955,122(3178):1006-1008

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Structure of a legume lectin with an ordered N-linked carbohydrate in complex with lactose   总被引：13，自引：0，他引：13  

B Shaanan  H Lis  N Sharon 《Science (New York, N.Y.)》1991,254(5033):862-866

The three-dimensional structure of the lactose complex of the Erythrina corallodendron lectin (EcorL), a dimer of N-glycosylated subunits, was determined crystallographically and refined at 2.0 angstrom resolution to an R value of 0.19. The tertiary structure of the subunit is similar to that of other legume lectins, but interference by the bulky N-linked heptasaccharide, which is exceptionally well ordered in the crystal, forces the EcorL dimer into a drastically different quaternary structure. Only the galactose moiety of the lactose ligand resides within the combining site. The galactose moiety is oriented differently from ligands in the mannose-glucose specific legume lectins and is held by hydrophobic interactions with Ala88, Tyr106, Phe131, and Ala218 and by seven hydrogen bonds, four of which are to the conserved Asp89, Asn133, and NH of Gly107. The specificity of legume lectins toward the different C-4 epimers appears to be associated with extensive variations in the outline of the variable parts of the binding sites.  相似文献