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971.
972.
Hans Meyer 《Monatshefte für Chemie / Chemical Monthly》1907,28(1):33-46
Ohne Zusammenfassung 相似文献
973.
We redefine the Baum-Connes assembly map using simplicial approximation in the equivariant Kasparov category. This interpretation is ideal for studying functorial properties and gives analogues of the Baum-Connes assembly map for all equivariant homology theories. 相似文献
974.
B. Boden V. Burkert G. Knop G. Kroesen M. Leenen W. Mehnert R. Sauerwein H. -D. Schablitzky H. H. Schmitz K. H. Althoff R. Dostert T. Hewel O. Kaul E. Kohlgarth W. Meyer E. P. Schilling W. Thiel 《Zeitschrift fur Physik C Particles and Fields》1991,49(2):175-185
Elastic electron deuteron scattering has been measured at the Bonn 2.5 GeV electron-synchrotron using a tensor polarized ND3 target. The scattered electrons and deuterons were detected in coincidence by two magnetic spectrometers. Data were taken at an average value of four momentum transfer ofQ 2=0.495 (GeV/c)2 in order to separate the electric monopole and quadrupole form factors of the deuteron. To have a sufficient control of systematic effects, both polarized and unpolarized cross sections were measured with an identical experimental set up. In the ratioR EXP=dσpol/dσunp systematic effects are expected to cancel. This ratioR EXP is related to the theoretical polarized cross section d dσ T where the spin quantization axis for the deuterons is orientated in the ed-scattering plane, perpendicular to the virtual photon direction. Our final result for the corresponding recoil tensor polarization ist 20=?2.01±1.13. 相似文献
975.
P. Berge H. Burkhardt F. Dydak R. Hagelberg M. W. Krasny H. J. Meyer P. Palazzi F. Ranjard J. Rothberg J. Steinberger H. Taureg H. Wahl R. W. Williams J. Wotschack H. Blümer H. D. Brummel P. Buchholz J. Duda F. Eisele B. Kampschulte K. Kleinknecht J. Knobloch E. Müller B. Pszola B. Renk T. Alvarez R. Belusevic B. Falkenburg R. Geiges C. Geweniger V. Hepp H. Keilwerth K. Tittel P. Debu C. Guyot J. P. Merlo A. Para P. Perez F. Perrier B. Peyaud J. P. Schuller R. Turlay B. Vallage H. Abramowicz J. Królikowski A. Lipniacka 《Zeitschrift fur Physik C Particles and Fields》1991,49(2):187-223
A high-statistics measurement of the differential cross-sections for neutrino-iron scattering in the wide-band neutrino beam at the CERN SPS is presented. Nucleon structure functions are extracted and theirQ 2 evolution is compared with the predictions of quantum chromodynamics. 相似文献
976.
索道输送系统钢绳及支撑组合系统动力学特征模型 总被引:5,自引:0,他引:5
给出一类索道输送系统钢绳与中间支撑机构组合的动力学模型。模型用于计算索道系统钢绳与中间支撑滑轮组机构工作工况的动力学特征值。发展了分析此特殊耦合动力学问题的方法。计算的特征值与实测是相符。 相似文献
977.
W. Bell A. Breakstone G. Claesson H. B. Crawley G. M. Dallavalle K. Doroba D. Drijard F. Fabbri A. Firestone M. A. Faessler H. G. Fischer S. Y. Fung S. Garpman W. Geist G. Giacomelli R. Gokieli M. Gorbics C. R. Gruhn P. Hanke M. Heiden W. Herr T. J. Ketel E. E. Kluge J. W. Lamsa T. Lohse I. Lund R. Mankel W. T. Meyer G. Mornacchi T. Nakada I. Otterlund M. Panter H. Pugh A. Putzer K. Rauschnabel B. Rensch F. Rimondi M. Schmelling L. Schroeder R. Sosnowski E. Stenlund T. J. M. Symons M. Szczekowski R. Szwed O. Ullaland R. Walczak D. Wegener M. Wunsch 《Zeitschrift für Physik A Hadrons and Nuclei》1986,325(1):7-14
Inelasticαα anddd collisions were studied at a centre-of-mass energy √S NN=31.2 GeV per nucleon-nucleon collision, using the Split-Field Magnet (SFM) detector at the CERN ISR. In this paper we show the inclusive and semi-inclusive rapidity distributions of protons, compare them with predictions of the Lund model, and calculate the average rapidity loss for participant protons. From the negative particles we calculate the inelasticity of the interaction, the average energy per particle, and the degree of isotropy of the produced hadrons. 相似文献
978.
B. Tabbert M. Beau H. Günther W. Häußler C. Hönninger K. Meyer B. Plagemann G. zu Putlitz 《Zeitschrift für Physik B Condensed Matter》1995,97(3):425-432
Optical spectra of atomic impurities in liquid helium have been investigated. Comparison is made between the wavelength of the free atomic and ionic lines and those in the liquid helium matrix. Simultaneously, the line width and a possible asymmetry is recorded. Presence and absence of radiative transitions depend on the species of the atom implanted in the quantum fluid. The absence of any optical transitions from states lying as low as 1,8 eV below the ionization limit will be explained in this paper. 相似文献
979.
Gerd Meyer 《无机化学与普通化学杂志》2003,629(10):1641-1642
980.
Katharina Gibson Markus Strbele Bjrn Blaschkowski Jochen Glaser Martina Weisser Radhakrishnan Srinivasan Heinz‐Jürgen Kolb Hans‐Jürgen Meyer 《无机化学与普通化学杂志》2003,629(10):1863-1870
Solid state metathesis reactions have been studied in fused silica tubes, by differential thermal analysis, and by X‐ray powder diffraction. A selection of reactions between metal (La, Nb, and Ni) chlorides and lithium nitride or lithium acetylide were investigated to get more insight into reaction pathways and intermediate reaction stages that may be adopted on course of the formation of metal nitrides or carbides. Intermediate compounds are considered to be important because they can control the reactivity of a system. Such compounds were traced by changing the molar ratios of reaction partners away from the salt‐balanced binary metal nitride or carbide target compositions. New preparative perspectives are discovered when metal chlorides were reacted with lithium nitridoborate or lithium cyanamide. Due to their reductive nature towards several d‐block metal chlorides, (BN2)3‐ and (CN2)2‐ react to form metals or metal nitrides plus X‐ray amorphous BN, and probably C3N4. With lanthanum chloride they can react to form nitridoborates and nitridocarbonates. The metathesis reaction between lithium cyanamide and cyanuric chloride (C3N3Cl3) instead of metal chloride was studied for the synthesis of C3N4. 相似文献