Robinson and his researches     

Scott AI 《Science (New York, N.Y.)》1978,200(4342):680

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APPARENT INTOXICATION IN POULTRY DUE TO NITROGENOUS BASES     

Cook SF  Scott KG 《Science (New York, N.Y.)》1935,82(2133):465-467

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Intestinal calcium absorption: nature of defect in chronic renal disease   总被引：5，自引：0，他引：5  

L V Avioli  S Scott  S W Lee  H F De Luca 《Science (New York, N.Y.)》1969,166(909):1154-1156

When compared to that of normal animals, calcium-binding protein activity of duodenal mucosa obtained from uremic rats was decreased. There was no change in this activity after vitamin D(3), therapy. In contrast, prior treatment with 25-hydroxycholecalcijerol resulted in increased transport of calcium-45 and calcium-binding protein activity in the intestine.  相似文献   

Pituitary-adrenal influences on fear responding   总被引：1，自引：0，他引：1  

J M Weiss  B S McEwen  M T Silva  M F Kalkut 《Science (New York, N.Y.)》1969,163(863):197-199

In a passive avoidance situation, hypophysectomized male rats show less fear than normal rats, whereas adrenalectomized rats show greater fear than normals. These results probably occur because hypophysectomized rats lack adrenocorticotrophic hormone, which increases arousal or emotionality, whereas adrenalectomized animals lack certain adrenal steroids, which inhibit excitatory effects. The results indicate that adrenocorticotrophic hormone and certain adrenal steroids have opposite effects in regulating fear-motivated behavior.  相似文献   

Inhibited and uninhibited infants "grown up": adult amygdalar response to novelty     

Schwartz CE  Wright CI  Shin LM  Kagan J  Rauch SL 《Science (New York, N.Y.)》2003,300(5627):1952-1953

Infants with an inhibited temperament tend to develop into children who avoid people, objects, and situations that are novel or unfamiliar, whereas uninhibited children spontaneously approach novel persons, objects, and situations. Behavioral and physiological features of these two temperamental categories are moderately stable from infancy into early adolescence and have been hypothesized to be due, in part, to variation in amygdalar responses to novelty. We found that adults who had been categorized in the second year of life as inhibited, compared with those previously categorized as uninhibited, showed greater functional MRI signal response within the amygdala to novel versus familiar faces.  相似文献   

Flood volcanism in the northern high latitudes of Mercury revealed by MESSENGER     

Head JW  Chapman CR  Strom RG  Fassett CI  Denevi BW  Blewett DT  Ernst CM  Watters TR  Solomon SC  Murchie SL  Prockter LM  Chabot NL  Gillis-Davis JJ  Whitten JL  Goudge TA  Baker DM  Hurwitz DM  Ostrach LR  Xiao Z  Merline WJ  Kerber L  Dickson JL  Oberst J  Byrne PK  Klimczak C  Nittler LR 《Science (New York, N.Y.)》2011,333(6051):1853-1856

MESSENGER observations from Mercury orbit reveal that a large contiguous expanse of smooth plains covers much of Mercury's high northern latitudes and occupies more than 6% of the planet's surface area. These plains are smooth, embay other landforms, are distinct in color, show several flow features, and partially or completely bury impact craters, the sizes of which indicate plains thicknesses of more than 1 kilometer and multiple phases of emplacement. These characteristics, as well as associated features, interpreted to have formed by thermal erosion, indicate emplacement in a flood-basalt style, consistent with x-ray spectrometric data indicating surface compositions intermediate between those of basalts and komatiites. The plains formed after the Caloris impact basin, confirming that volcanism was a globally extensive process in Mercury's post-heavy bombardment era.  相似文献   

Geology of the Caloris basin, Mercury: a view from MESSENGER     

Murchie SL  Watters TR  Robinson MS  Head JW  Strom RG  Chapman CR  Solomon SC  McClintock WE  Prockter LM  Domingue DL  Blewett DT 《Science (New York, N.Y.)》2008,321(5885):73-76

The Caloris basin, the youngest known large impact basin on Mercury, is revealed in MESSENGER images to be modified by volcanism and deformation in a manner distinct from that of lunar impact basins. The morphology and spatial distribution of basin materials themselves closely match lunar counterparts. Evidence for a volcanic origin of the basin's interior plains includes embayed craters on the basin floor and diffuse deposits surrounding rimless depressions interpreted to be of pyroclastic origin. Unlike lunar maria, the volcanic plains in Caloris are higher in albedo than surrounding basin materials and lack spectral evidence for ferrous iron-bearing silicates. Tectonic landforms, contractional wrinkle ridges and extensional troughs, have distributions and age relations different from their counterparts in and around lunar basins, indicating a different stress history.  相似文献   

Lunar impact basins and crustal heterogeneity: new Western limb and far side data from galileo     

Belton MJ  Head JW  Pieters CM  Greeley R  McEwen AS  Neukum G  Klaasen KP  Anger CD  Carr MH  Chapman CR  Davies ME  Fanale FP  Gierasch PJ  Greenberg R  Ingersoll AP  Johnson T  Paczkowski B  Pilcher CB  Veverka J 《Science (New York, N.Y.)》1992,255(5044):570-576

Multispectral images of the lunar western limb and far side obtained from Galileo reveal the compositional nature of several prominent lunar features and provide new information on lunar evolution. The data reveal that the ejecta from the Orientale impact basin (900 kilometers in diameter) lying outside the Cordillera Mountains was excavated from the crust, not the mantle, and covers pre-Orientale terrain that consisted of both highland materials and relatively large expanses of ancient mare basalts. The inside of the far side South Pole-Aitken basin (>2000 kilometers in diameter) has low albedo, red color, and a relatively high abundance of iron- and magnesium-rich materials. These features suggest that the impact may have penetrated into the deep crust or lunar mantle or that the basin contains ancient mare basalts that were later covered by highlands ejecta.  相似文献   

Lesch-Nyhan syndrome: rapid detection of heterozygotes by use of hair follicles   总被引：14，自引：0，他引：14  

S M Gartler  R C Scott  J L Goldstein  B Campbell 《Science (New York, N.Y.)》1971,172(983):572-574

A method is described which permits rapid phenotypic diagnosis of the Lesch-Nyhan heterozygote by direct assay of hypoxanthine guanine phosphori-bosyltransferase activity in single hair follicles obtained from the scalp.  相似文献   

Clostridium botulinum type F: seasonal inhibition by bacillus licheniformis   总被引：9，自引：0，他引：9  

M W Wentz  R A Scott  J W Vennes 《Science (New York, N.Y.)》1967,155(758):89-90

Clostridium botulinum type F has been identified during the summer months in mud samples from a small stream. Its absence during the period from October to April in these mud samples is attributed to the presence of Bacillus  相似文献