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61.
Abelev B Abrahantes Quintana A Adamová D Adare AM Aggarwal MM Aglieri Rinella G Agocs AG Agostinelli A Aguilar Salazar S Ahammed Z Ahmad N Ahmad Masoodi A Ahn SU Akindinov A Aleksandrov D Alessandro B AlfaroMolina R Alici A Alkin A Almaráz Aviña E Alt T Altini V Altinpinar S Altsybeev I Andrei C Andronic A Anguelov V Anson C Antičić T Antinori F Antonioli P Aphecetche L Appelshäuser H Arbor N Arcelli S Arend A Armesto N Arnaldi R Aronsson T Arsene IC Arslandok M Asryan A Augustinus A Averbeck R 《Physical review letters》2012,108(8):082001
The ALICE Collaboration has studied J/ψ production in pp collisions at √s=7 TeV at the LHC through its muon pair decay. The polar and azimuthal angle distributions of the decay muons were measured, and results on the J/ψ polarization parameters λ(θ) and λ(φ) were obtained. The study was performed in the kinematic region 2.5相似文献
62.
A de novo synthesis of pentoses is described starting from (Z)-2-buten-1,4-diol (1). The key step is the enzyme catalysed enantioselective HCN-addition to O-protected 4-hydroxybut-2-enal using the hydroxynitrile lyase from Hevea brasiliensis, followed by an asymmetric dihydroxylation. For the cyanohydrin reaction the influence of the configuration of the double bond and of the protecting group was investigated. The dihydroxylation step was found to be influenced by the protecting group on position 4. 相似文献
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<正>A series of international Conveying and Handling of Particulate Solids(CHoPS)conferences was initiated in Herzliya,Israel in 1995and has since proceeded with six successive conferences held in Jerusalem(1997),the Dead Sea(2000),Budapest(2003),Sorrento(2006),Brisbane(2009)and Friedrichshafen(2012).The conference series covers processes involving particulate solids,for example 相似文献
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Sashchiuk Aldona Lifshitz Efrat Reisfeld Renata Saraidarov Tsiala Zelner Marina Willenz Avi 《Journal of Sol-Gel Science and Technology》2002,24(1):31-38
Lead sulfide (PbS) nanocrystals (NCs), embedded in amorphous zirconia sol-gel film with different PbS mole concentration (5–30%), were grown at temperature, ranging from 200°C to 350°C. The size of PbS NCs was determined by TEM and by blue shift of the absorption edge. The size increased with an increase of the synthesis temperature and PbS mole concentration. The optical and electrical properties of various sizes of PbS NCs in zirconia film are investigated utilizing absorption, photoluminescence (PL) and current-voltage measurement. The PL spectra were Stokes shifted from the corresponding absorption edge by about 0.5 eV. The latter can be associated with recombination process from surface state. The electrical properties were investigated by the deposition of the PbS NCs-zirconia films on ITO/glass substrate, followed by their coverage with gold contact. The current-voltage characteristics depend on the PbS NCs size and exhibits nonlinear nearly symmetric curve, associated with the space-charge limited current or the tunneling of carriers through the nanocrystalline film. 相似文献
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Cubero E Aviñó A de la Torre BG Frieden M Eritja R Luque FJ González C Orozco M 《Journal of the American Chemical Society》2002,124(12):3133-3142
The structure of parallel-stranded duplexes of DNA-containing a mixture of guanines (G) and adenines (A) is studied by means of molecular dynamics (MD) simulation, as well as NMR and circular dichroism (CD) spectroscopy. Results demonstrate that the structure is based on the Hoogsteen motif rather than on the reverse Watson-Crick one. Molecular dynamics coupled to thermodynamic integration (MD/TI) calculations and melting experiments allowed us to determine the effect of 8-amino derivatives of A and G and of 8-amino-2'-deoxyinosine on the stability of parallel-stranded duplexes. The large stabilization of the parallel-stranded helix upon 8-amino substitution agrees with a Hoogsteen pairing, confirming MD, NMR, and CD data, and suggests new methods to obtain DNA triplexes for antigene and antisense purposes. 相似文献
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The reactions of BrMn(CO)5 with the non-chelating stereochemically rigid bidentate ligands (L-L) 1,3-, and 1,4-diisocyanobenzene, 4,4′-diisocyanobiphenyl, and 4,4′-diisocyanodiphenylmethane afford well characterized complexes of the types BrMn(CO)4(L-L), BrMn(CO)3(L-L)2, and [BrMn(CO)4]2(L-L). Similar reactions with [RC5H4Mn(CO)2NO]+PF6− gave mixtures of oligomers of the type [(RC5H4MnNO)n(L-L)n+1]n+[PF6−]n. 相似文献
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Avi Herbon 《The Journal of the Operational Research Society》2016,67(4):564-575
The remaining shelf-life of perishable storable products can become an additional source of volatility among consumers and a matter for price discrimination. Two models are presented. Both models assume the retailer has the information about consumers’ sensitivity to the remaining shelf-life (eg, their purchasing history). Only the first assumes the retailer has also the technology for price discrimination. An optimal solution for each model is analytically obtained and a numerical example that illustrates the significance is introduced. Numerical illustration indicates that a policy of identical prices for all based on accurate information about consumer sensitivity to remaining shelf-life results in a profit that is just slightly smaller per unit of time compared with the price discrimination policy. Opposing, the numerical illustration also indicates significant difference between the models with respect to their impact on consumers. Following these results, the regulator may consider suggesting the retailer monetary incentives in order to utilize price discrimination. 相似文献