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排序方式: 共有103条查询结果,搜索用时 15 毫秒
91.
Schmidke WB Abrams GS Matteuzzi C Amidei D Baden AR Barklow T Boyarski AM Boyer J Breidenbach M Burchat PR Burke DL Butler F Dieterle WE Dorfan JM Feldman GJ Gidal G Gladney L Gold MS Goldhaber G Golding LJ Haggerty J Hanson G Hayes K Herrup D Hollebeek RJ Innes WR Jaros JA Juricic I Kadyk JA Karlen D Klein SR Lankford AJ Larsen RR LeClaire BW Levi ME Lockyer NS Lüth V Nelson ME Ong RA Perl ML Richter B Riles K Ross MC Rowson PC Schaad T Schellman H Sheldon PD Trilling GH de la Vaissiere C 《Physical review letters》1986,57(5):527-530
92.
Yelton JM Dorfan JM Abrams GS Amidel D Baden AR Barklow T Boyarski AM Boyer J Breidenbach M Burchat P Burke DL Butler F Feldman GJ Gladney LD Gidal G Gold MS Goldhaber G Golding L Haggerty J Hanson G Hayes K Herrup D Hollebeek RJ Innes WR Jaros JA Juricic I Kadyk JA Karlen D Lankford AJ Larsen RR Leclaire BW Levi ME Lockyer NS Lüth V Matteuzzi C Nelson ME Ong RA Perl ML Richter B Riles K Ross MC Rowson PC Schadd T Schellman H Schmidke WB Sheldon PD Trilling GH de la Vaissiere C Wood DR Zaiser C 《Physical review letters》1986,56(8):812-814
93.
Wormser G Abrams G Amidei D Baden AR Barklow T Boyarski AM Boyer J Burchat PR Burke DL Butler F Dorfan JM Feldman GJ Gidal G Gladney L Gold MS Goldhaber G Golding L Haggerty J Hanson G Hayes K Herrup D Hollebeek RJ Innes WR Jaros JA Juricic I Kadyk JA Karlen D Klein SR Lankford AJ Larsen RR LeClaire BW Levi M Lockyer NS Lüth V Nelson ME Ong RA Perl ML Richter B Riles K Rowson PC Schaad T Schellman H Schmidke WB Sheldon PD Trilling GH Wood DR Yelton JM 《Physical review letters》1988,61(9):1057-1060
94.
Seidel S Bionta RM Blewitt G Bratton CB Casper D Ciocio A Claus R Dye ST Errede S Foster GW Gajewski W Ganezer KS Goldhaber M Haines TJ Jones TW Kielczewska D Kropp WR Learned JG LoSecco JM Matthews J Park HS Price L Reines F Schultz J Shumard E Sinclair D Sobel HW Stone JL Sulak L Svoboda R Thornton G van der Velde JC Wuest C 《Physical review letters》1988,61(22):2522-2525
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An analytical scheme for determining forms of sulphur in oil shales and associated rocks 总被引:1,自引:0,他引:1
An analytical scheme for determining various forms of sulphur in oil shales and associated rocks is presented. Acid-soluble sulphate, sulphur contained in monosulphide and in disulphide minerals, and organically-bound sulphur are all quantitatively recovered as separate fractions. Finely-ground oil-shale samples are treated in an inert atmosphere with 6M hydrochloric acid to dissolve the acid-soluble sulphate minerals and form H2S from the decomposition of monosulphide minerals. The acid-soluble sulphate is precipitated as barium sulphate and the H2S is collected and weighed as silver sulphide. Disulphide minerals in the solid residue from the acid treatment are reduced by an acidified Cr(II) solution in an inert atmosphere, releasing the sulphide as H2S. The H2S is collected as silver sulphide. An Eschka fusion oxidizes and solubilizes all sulphur remaining within the Cr(II)-treated residue. This sulphate represents organically-bound sulphur and is collected as barium sulphate. The analytical procedures have been verified by using 57Fe Mössbauer spectroscopy. Good agreement between the chemical and Mössbauer data substantiated the sequential removal of the forms of sulphur and also demonstrated the ability of Mössbauer spectroscopy to determine the absolute quantities of iron present in specific minerals. 相似文献
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Boyer J Butler F Gidal G Abrams G Amidei D Baden AR Gold MS Golding L Goldhaber G Haggerty J Herrup D Juricic I Kadyk JA Levi ME Nelson ME Rowson PC Schellman H Schmidke WB Sheldon PD Trilling GH Wood DR Barklow T Boyarski A Burchat P Burke DL Cords D Dorfan JM Feldman GJ Gladney L Hanson G Hayes K Hollebeek RJ Innes WR Jaros JA Karlen D Lankford AJ Larsen RR LeClaire BW Lockyer NS Lüth V Ong RA Perl ML Richter B Riles K Yelton JM Schaad T 《Physical review D: Particles and fields》1990,42(5):1350-1367
100.
We calculate the cross section for the exclusive production of J(PC)=0(++) glueballs G0 in association with the J/psi in e(+)e(-) annihilation using the perturbative QCD factorization formalism. The required long-distance matrix element for the glueball is bounded by CUSB data from a search for resonances in radiative Upsilon decay. The cross section for e(+)e(-)-->J/psi+G0 at sqrt[s]=10.6 GeV is similar to exclusive charmonium-pair production e(+)e(-)-->J/psi+h for h=eta(c) and chi(c0), and is larger by a factor of 2 than that for h=eta(c)(2S). As the subprocesses gamma(*)-->(cc)(cc) and gamma(*)-->(cc)(gg) are of the same nominal order in perturbative QCD, it is possible that some portion of the anomalously large signal observed by Belle in e(+)e(-)-->J/psiX may actually be due to the production of charmonium-glueball J/psiG(J) pairs. 相似文献