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排序方式: 共有117条查询结果,搜索用时 671 毫秒
91.
Hilger Wolff 《Mathematische Annalen》1967,171(3):165-193
Ohne Zusammenfassung 相似文献
92.
P. Feller H. Herr E. Hilger V. Kadansky D. Menze Th. Miczaika U. Opara W.J. Schwille 《Physics letters. [Part B]》1974,49(2):197-200
The differential cross section has been measured for the reaction γ+p→πo + p at the Bonn 2.5 GeV electron synchrotron in the energy range from 0.55 to 2.2 GeV at a c.m.angle of 120 degrees. 相似文献
93.
Derrick M Krakauer D Magill S Mikunas D Musgrave B Repond J Stanek R Talaga RL Zhang H Ayad R Bari G Basile M Bellagamba L Boscherini D Bruni A Bruni G Bruni P Cara Romeo G Castellini G Chiarini M Cifarelli L Cindolo F Contin A Corradi M Gialas I Giusti P Iacobucci G Laurenti G Levi G Margotti A Massam T Nania R Nemoz C Palmonari F Polini A Sartorelli G Timellini R Zamora Garcia Y Zichichi A Bargende A Crittenden J Desch K Diekmann B Doeker T Eckert M Feld L Frey A Geerts M Geitz G Grothe M 《Physical review letters》1995,75(6):1006-1011
94.
95.
Ohne Zusammenfassung 相似文献
96.
97.
Chekanov S Derrick M Magill S Musgrave B Nicholass D Repond J Yoshida R Mattingly MC Antonioli P Bari G Bellagamba L Boscherini D Bruni A Bruni G Cindolo F Corradi M Iacobucci G Margotti A Nania R Polini A Antonelli S Basile M Bindi M Cifarelli L Contin A De Pasquale S Sartorelli G Zichichi A Bartsch D Brock I Hartmann H Hilger E Jakob HP Jüngst M Nuncio-Quiroz AE Paul E Samson U Schönberg V Shehzadi R Wlasenko M Brook NH Heath GP Morris JD Capua M Fazio S Mastroberardino A Schioppa M Susinno G 《Physical review letters》2008,101(11):112003
Inclusive K_{S};{0}K_{S};{0} production in ep collisions at the DESY ep collider HERA was studied with the ZEUS detector using an integrated luminosity of 0.5 fb;{-1}. Enhancements in the mass spectrum were observed and are attributed to the production of f_{2}(1270)/a_{2};{0}(1320), f_{2};{'}(1525) and f_{0}(1710). Masses and widths were obtained using a fit which takes into account theoretical predictions based on SU(3) symmetry arguments, and are consistent with the Particle Data Group values. The f_{0}(1710) state, which has a mass consistent with a glueball candidate, was observed with a statistical significance of 5 standard deviations. However, if this state is the same as that seen in gammagamma-->K_{S};{0}K_{S};{0}, it is unlikely to be a pure glueball state. 相似文献
98.
Christine M. Fisher Ryan T. Hilger Feifei Zhao Scott A. McLuckey 《Journal of mass spectrometry : JMS》2015,50(9):1063-1070
The use of borosilicate theta glass capillaries as nanoelectrospray ionization emitters has recently been demonstrated as a method for mixing two solutions as they are sprayed into the mass spectrometer for analysis. All previous experiments resulted in a solution mixing timescale limited to the time the analytes spend in the Taylor cone and subsequent droplets (i.e. sub‐millisecond timescale). In an effort to extend the solution mixing timescale to the milliseconds regime, we demonstrate that solution can be moved from one channel of the theta tip to the opposite channel via electroosmosis by applying a potential difference between the two wire electrodes inserted into each channel of the theta tip. First, we establish that electroosmosis is responsible for solution movement using fluorescence microscopy to track fluorescent tracer dyes. We then demonstrate the utility of this technique in varying the extent of denaturation of holomyoglobin to apomyoglobin on the millisecond timescale just prior to analysis by mass spectrometry. Finally, we induce additional turbulence for better mixing by applying a square wave potential to one of the wire electrodes while holding the opposite wire at a constant voltage between the low and high potentials of the square wave. This experiment was found to provide nearly complete mixing after a single cycle of the square wave. The use of electroosmosis significantly expands the flexibility of theta tips for altering solutions prior to nESI without the need for off‐line sample manipulation. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
99.
100.
A. Hilger N. Cüppers M. Tenfelde U. Kreibig 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2000,10(1):115-118
We present novel experimental results about influences of surrounding foreign materials on optical properties of small silver
clusters. First we show spectra of free cluster beams produced with different seeding gases Ar, Kr, Xe. Second, we estimate, from measured spectra, the cluster deformations
and contact areas after deposition on different substrates (Cr2O3 and MgF2) at room temperature and on SiO2 at 110 K and between 160 K and 300 K. Third, we present and compare the static and dynamic charge transfer after embedding the clusters in various fluorides and compare with previous results on oxides.
Received 2 September 1998 and Received in final form 3 January 1999 相似文献