Buchbesprechungen     

W. Kroth  A. Fischer  M. Prodan  M. Scheifele  U. Ammer  R. Plochmann  M. Feemers  C. T. Bues  A. Knorr 《Forstwissenschaftliches Centralblatt》1989,108(1):369-372

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Zwei von Uganda nach Hawaii importierteOpius-Arten(Hymenoptera,Braconidae)     

Max Fischer 《Journal of pest science》1971,44(1):10-12

Ohne Zusammenfassung  相似文献   

Fullerene polymers from solid precursors?     

Fischer JE 《Science (New York, N.Y.)》1994,264(5165):1548-1549

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High-Energy Charged Particles in the Innermost Jovian Magnetosphere     

HM Fischer  E Pehlke  G Wibberenz  LJ Lanzerotti  JD Mihalov 《Science (New York, N.Y.)》1996,272(5263):856-858

The energetic particles investigation carried by the Galileo probe measured the energy and angular distributions of the high-energy particles from near the orbit of Io to probe entry into the jovian atmosphere. Jupiter's inner radiation region had extremely large fluxes of energetic electrons and protons; intensities peaked at approximately2.2RJ (where RJ is the radius of Jupiter). Absorption of the measured particles was found near the outer edge of the bright dust ring. The instrument measured intense fluxes of high-energy helium ions (approximately62 megaelectron volts per nucleon) that peaked at approximately1.5RJ inside the bright dust ring. The abundances of all particle species decreased sharply at approximately1.35RJ; this decrease defines the innermost edge of the equatorial jovian radiation.  相似文献   

LMO2-associated clonal T cell proliferation in two patients after gene therapy for SCID-X1   总被引：1，自引：0，他引：1  

Hacein-Bey-Abina S  Von Kalle C  Schmidt M  McCormack MP  Wulffraat N  Leboulch P  Lim A  Osborne CS  Pawliuk R  Morillon E  Sorensen R  Forster A  Fraser P  Cohen JI  de Saint Basile G  Alexander I  Wintergerst U  Frebourg T  Aurias A  Stoppa-Lyonnet D  Romana S  Radford-Weiss I  Gross F  Valensi F  Delabesse E  Macintyre E  Sigaux F  Soulier J  Leiva LE  Wissler M  Prinz C  Rabbitts TH  Le Deist F  Fischer A  Cavazzana-Calvo M 《Science (New York, N.Y.)》2003,302(5644):415-419

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Frontiers in crop production: chemical research objectives     

Geissbuhler H  Brenneisen P  Fischer HP 《Science (New York, N.Y.)》1982,217(4559):505-510

The science of chemistry and chemicals will continue to be an integral part of future crop production technologies. In assessing and defining the future role of chemistry three imperatives must be considered: (i) the necessity to preserve natural resources, (ii) the complementary solutions offered by the rapidly advancing biological sciences, and (iii) the specific requirements of developing regions where increasing crop productivity is most important. Chemical research objectives for improving crop protection and crop growth must take into account the perceivable and potential changes in crop production techniques, which, in turn, are dictated by a number of accentuating constraints.  相似文献   

Experience-driven plasticity of visual cortex limited by myelin and Nogo receptor     

McGee AW  Yang Y  Fischer QS  Daw NW  Strittmatter SM 《Science (New York, N.Y.)》2005,309(5744):2222-2226

Monocular deprivation normally alters ocular dominance in the visual cortex only during a postnatal critical period (20 to 32 days postnatal in mice). We find that mutations in the Nogo-66 receptor (NgR) affect cessation of ocular dominance plasticity. In NgR-/- mice, plasticity during the critical period is normal, but it continues abnormally such that ocular dominance at 45 or 120 days postnatal is subject to the same plasticity as at juvenile ages. Thus, physiological NgR signaling from myelin-derived Nogo, MAG, and OMgp consolidates the neural circuitry established during experience-dependent plasticity. After pathological trauma, similar NgR signaling limits functional recovery and axonal regeneration.  相似文献   

Ferroelectric Field Effect in Epitaxial Thin Film Oxide SrCuO2/Pb(Zr0.52Ti0.48)O3 Heterostructures     

Ahn CH  Triscone JM  Archibald N  Decroux M  Hammond RH  Geballe TH  Fischer O  Beasley MR 《Science (New York, N.Y.)》1995,269(5222):373-376

A ferroelectric field effect in epitaxial thin film SrCuO(2)/Pb(Zr(0.52)Ti(0.48))O(3) heterostructures was observed. A 3.5 percent change in the resistance of a 40 angstrom SrCuO(2) layer (a parent high-temperature superconducting compound) was measured when the polarization field of the Pb(Zr(0.52)Ti(0.48))O(3) layer was reversed by the application of a pulse of small voltage (<5 volts). This effect, both reversible and nonvolatile, is attributed to the electric field-induced charge at the interface of SrCuO(2) and Pb(Zr(0.52)Ti(0.48))O(3). This completely epitaxial thin film approach shows the possibility of making nonvolatile, low-voltage ferroelectric field effect devices for both applications and fundamental studies of field-induced doping in novel compounds like SrCuO(2).  相似文献   

French scientists take a stand     

Fischer A 《Science (New York, N.Y.)》2004,303(5660):954

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A modern necessity     

Fischer CS 《Science (New York, N.Y.)》1991,252(5008):981-984

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