The partitioning of the Red Sea     

Zimmer C 《Science (New York, N.Y.)》2001,293(5530):627-628

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Evolution. In search of vertebrate origins: beyond brain and bone     

Zimmer C 《Science (New York, N.Y.)》2000,287(5458):1576-1579

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Sequence interpretation. Functional annotation of mouse genome sequences     

Nadeau JH  Balling R  Barsh G  Beier D  Brown SD  Bucan M  Camper S  Carlson G  Copeland N  Eppig J  Fletcher C  Frankel WN  Ganten D  Goldowitz D  Goodnow C  Guenet JL  Hicks G  Hrabe de Angelis M  Jackson I  Jacob HJ  Jenkins N  Johnson D  Justice M  Kay S  Kingsley D  Lehrach H  Magnuson T  Meisler M  Poustka A  Rinchik EM  Rossant J  Russell LB  Schimenti J  Shiroishi T  Skarnes WC  Soriano P  Stanford W  Takahashi JS  Wurst W  Zimmer A;International Mouse Mutagenesis Consortium 《Science (New York, N.Y.)》2001,291(5507):1251-1255

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The stories behind the bones. Meeting. Society for Vertebrate Paleontology     

Zimmer C 《Science (New York, N.Y.)》1999,286(5442):1071, 1073-1071, 1074

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Comment on "Deep mixing of 3He: reconciling Big Bang and stellar nucleosynthesis"     

Balser DS  Rood RT  Bania TM 《Science (New York, N.Y.)》2007,317(5842):1170

Eggleton et al. (Reports, 8 December 2006, p. 1580) reported on a deep-mixing mechanism in low-mass stars caused by a Rayleigh-Taylor instability that destroys all of the helium isotope 3He produced during the star's lifetime. Observations of 3He in planetary nebulae, however, indicate that some stars produce prodigious amounts of 3He. This is inconsistent with the claim that all low-mass stars should destroy 3He.  相似文献   

Ultrafast flash thermal conductance of molecular chains     

Wang Z  Carter JA  Lagutchev A  Koh YK  Seong NH  Cahill DG  Dlott DD 《Science (New York, N.Y.)》2007,317(5839):787-790

At the level of individual molecules, familiar concepts of heat transport no longer apply. When large amounts of heat are transported through a molecule, a crucial process in molecular electronic devices, energy is carried by discrete molecular vibrational excitations. We studied heat transport through self-assembled monolayers of long-chain hydrocarbon molecules anchored to a gold substrate by ultrafast heating of the gold with a femtosecond laser pulse. When the heat reached the methyl groups at the chain ends, a nonlinear coherent vibrational spectroscopy technique detected the resulting thermally induced disorder. The flow of heat into the chains was limited by the interface conductance. The leading edge of the heat burst traveled ballistically along the chains at a velocity of 1 kilometer per second. The molecular conductance per chain was 50 picowatts per kelvin.  相似文献   

A single IGF1 allele is a major determinant of small size in dogs   总被引：3，自引：0，他引：3  

Sutter NB  Bustamante CD  Chase K  Gray MM  Zhao K  Zhu L  Padhukasahasram B  Karlins E  Davis S  Jones PG  Quignon P  Johnson GS  Parker HG  Fretwell N  Mosher DS  Lawler DF  Satyaraj E  Nordborg M  Lark KG  Wayne RK  Ostrander EA 《Science (New York, N.Y.)》2007,316(5821):112-115

The domestic dog exhibits greater diversity in body size than any other terrestrial vertebrate. We used a strategy that exploits the breed structure of dogs to investigate the genetic basis of size. First, through a genome-wide scan, we identified a major quantitative trait locus (QTL) on chromosome 15 influencing size variation within a single breed. Second, we examined genetic variation in the 15-megabase interval surrounding the QTL in small and giant breeds and found marked evidence for a selective sweep spanning a single gene (IGF1), encoding insulin-like growth factor 1. A single IGF1 single-nucleotide polymorphism haplotype is common to all small breeds and nearly absent from giant breeds, suggesting that the same causal sequence variant is a major contributor to body size in all small dogs.  相似文献   

Beyond the ivory tower. A distant mirror for the brain     

Zimmer C 《Science (New York, N.Y.)》2004,303(5654):43-44

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Vibrational energy transfer across a reverse micelle surfactant layer     

Deàk JC  Pang Y  Sechler TD  Wang Z  Dlott DD 《Science (New York, N.Y.)》2004,306(5695):473-476

In a suspension of reverse micelles, in which the surfactant sodium dioctyl sulfosuccinate (AOT) separates a water nanodroplet from a bulk nonpolar CCl4 phase, ultrafast vibrational spectroscopy was used to study vibrational energy transfer from the nanodroplet through the AOT interfacial monolayer to the surrounding CCl4. Most of the vibrational energy from the nanodroplet was transferred to the polar AOT head group within 1.8 picoseconds and then out to the CCl4 within 10 picoseconds. Vibrational energy pumped directly into the AOT tail resulted in a slower 20- to 40-picosecond transfer of energy to the CCl4.  相似文献   

A SCIENTIFIC STUDY OF LAWNTENNIS     

Dana CL 《Science (New York, N.Y.)》1884,4(94):473-474

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