Temperatures, winds, and composition in the saturnian system     

Flasar FM  Achterberg RK  Conrath BJ  Pearl JC  Bjoraker GL  Jennings DE  Romani PN  Simon-Miller AA  Kunde VG  Nixon CA  Bézard B  Orton GS  Spilker LJ  Spencer JR  Irwin PG  Teanby NA  Owen TC  Brasunas J  Segura ME  Carlson RC  Mamoutkine A  Gierasch PJ  Schinder PJ  Showalter MR  Ferrari C  Barucci A  Courtin R  Coustenis A  Fouchet T  Gautier D  Lellouch E  Marten A  Prangé R  Strobel DF  Calcutt SB  Read PL  Taylor FW  Bowles N  Samuelson RE  Abbas MM  Raulin F  Ade P  Edgington S  Pilorz S  Wallis B  Wishnow EH 《Science (New York, N.Y.)》2005,307(5713):1247-1251

Stratospheric temperatures on Saturn imply a strong decay of the equatorial winds with altitude. If the decrease in winds reported from recent Hubble Space Telescope images is not a temporal change, then the features tracked must have been at least 130 kilometers higher than in earlier studies. Saturn's south polar stratosphere is warmer than predicted from simple radiative models. The C/H ratio on Saturn is seven times solar, twice Jupiter's. Saturn's ring temperatures have radial variations down to the smallest scale resolved (100 kilometers). Diurnal surface temperature variations on Phoebe suggest a more porous regolith than on the jovian satellites.  相似文献   

Jupiter's Atmosphere: Its Structure and Composition     

Greenspan JA  Owen T 《Science (New York, N.Y.)》1967,156(3781):1489-1494

Recent laboratory and observational data support the hypothesis that the composition of Jupiter's atmosphere is consistent with the relative abundances of the elements found in the sun. A model based on this assumption provides a reasonable interpretation of abundances of hydrogen and other gases obtained from studies of various regions of the planet's spectrum. Two presently unidentified absorptions may be caused by organic molecules in the Jovian atmosphere.  相似文献   

Correction of ADA-SCID by stem cell gene therapy combined with nonmyeloablative conditioning     

Aiuti A  Slavin S  Aker M  Ficara F  Deola S  Mortellaro A  Morecki S  Andolfi G  Tabucchi A  Carlucci F  Marinello E  Cattaneo F  Vai S  Servida P  Miniero R  Roncarolo MG  Bordignon C 《Science (New York, N.Y.)》2002,296(5577):2410-2413

Hematopoietic stem cell (HSC) gene therapy for adenosine deaminase (ADA)-deficient severe combined immunodeficiency (SCID) has shown limited clinical efficacy because of the small proportion of engrafted genetically corrected HSCs. We describe an improved protocol for gene transfer into HSCs associated with nonmyeloablative conditioning. This protocol was used in two patients for whom enzyme replacement therapy was not available, which allowed the effect of gene therapy alone to be evaluated. Sustained engraftment of engineered HSCs with differentiation into multiple lineages resulted in increased lymphocyte counts, improved immune functions (including antigen-specific responses), and lower toxic metabolites. Both patients are currently at home and clinically well, with normal growth and development. These results indicate the safety and efficacy of HSC gene therapy combined with nonmyeloablative conditioning for the treatment of SCID.  相似文献   

Polymorphism in pleistocene land snails     

Owen DF 《Science (New York, N.Y.)》1966,152(3718):71-72

Under suitable conditions the colors and patterns of the shells of land snails may be preserved for thousands of years. In a late Pleistocene population of Limicolaria martensiana all the major color forms that occur in modern living snails may be distinguished, and the basic polymorphism is at least 8,000 to 10,000 year old.  相似文献   

IMMUNOGENETIC CONSEQUENCES OF VASCULAR ANASTOMOSES BETWEEN BOVINE TWINS     

Owen RD 《Science (New York, N.Y.)》1945,102(2651):400-401

  相似文献   

Polymorphism and Population Density in the African Land Snail, Limicolaria martensiana     

Owen DF 《Science (New York, N.Y.)》1963,140(3567):666-667

In natural populations of the African land snail, Limicolaria martensiana, the degree of polymorphism in color and pattern may vary with the density of the population. This could occur because predators eat the snails selectively and use past experience as a guide in finding further prey. Hence contrasting color forms may be at an advantage in dense populations where predators would have ample opportunity to learn to recognize prey.  相似文献   

Education. Funding roller coaster for public higher education     

McPherson MS  Schapiro MO 《Science (New York, N.Y.)》2003,302(5648):1157

  相似文献   

History of science. The alchemical revolution     

Reardon S 《Science (New York, N.Y.)》2011,332(6032):914-915

  相似文献   

Detection of c-sis transcripts and synthesis of PDGF-like proteins by human osteosarcoma cells   总被引：17，自引：0，他引：17  

D T Graves  A J Owen  R K Barth  P Tempst  A Winoto  L Fors  L E Hood  H N Antoniades 《Science (New York, N.Y.)》1984,226(4677):972-974

  相似文献   

Ecology. China's forestry reforms     

Wang G  Innes JL  Lei J  Dai S  Wu SW 《Science (New York, N.Y.)》2007,318(5856):1556-1557

  相似文献