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141.
Anderson C Antonello M Baller B Bolton T Bromberg C Cavanna F Church E Edmunds D Ereditato A Farooq S Fleming B Greenlee H Guenette R Haug S Horton-Smith G James C Klein E Lang K Laurens P Linden S McKee D Mehdiyev R Page B Palamara O Partyka K Patch A Rameika G Rebel B Rossi B Soderberg M Spitz J Szelc AM Weber M Yang T Zeller G;ArgoNeuT Collaboration 《Physical review letters》2012,108(16):161802
The ArgoNeuT Collaboration presents the first measurements of inclusive muon neutrino charged current differential cross sections on argon. Obtained in the NuMI neutrino beam line at Fermilab, the flux-integrated results are reported in terms of outgoing muon angle and momentum. The data are consistent with the Monte Carlo expectation across the full range of kinematics sampled, 0°<θ(μ)<36° and 0
相似文献
142.
Aurora Pacini Marco Caricato Stefania Ferrari Doretta Capsoni Antxon Martínez de Ilarduya Sebastián Muñoz‐Guerra Dario Pasini 《Journal of polymer science. Part A, Polymer chemistry》2012,50(22):4790-4799
We report on a series of novel poly(γ‐glutamic acid) (PGGA) esters, in which the chemical structure and composition, and the molecular weight are systematically changed. Modification of PGGA of microbial origin, used either as the sodium salt or in the free acid form, by means of alkylation with highly reactive bromides under SN2 conditions, affords copolymers with an essentially random microstructure. These reaction conditions are applied iteratively to achieve full esterification, obtaining allyl or propargyl ester functionalities within the polymer backbone, diluted with inert functional groups, such as benzyl, ethyl, or hexyl ester functionalities. The copolymers have been characterized regarding their chemical structure and thermal and bulk properties using nuclear magnetic resonance, thermogravimetry, differential scanning calorimetry, and X‐ray diffraction techniques. We demonstrate that allyl and propargyl ester groups can be efficiently transformed using click chemistries, such as thiol‐ene or copper(I)‐catalyzed azide–alkyne cycloaddition reactions; such efficient conjugation strategies will be required to transform the native bacterial biopolymer into a material with tailored properties for bulk scale or biomedical applications. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 相似文献
143.
Antonio Pasini 《Designs, Codes and Cryptography》2007,44(1-3):31-38
We prove that every flag-transitive locally finite (PG
*.PG)-geometry is a truncated projective geometry.
Dedicated to Daniel Hughes on the occasion of his 80th birthday. 相似文献
144.
Let Δ be a dual polar space of rank n≥4, H be a hyperplane of Δ and Γ?Δ?H be the complement of H in Δ. We shall prove that, if all lines of Δ have more than 3 points, then Γ is simply connected. Then we show how this theorem can be exploited to prove that certain families of hyperplanes of dual polar spaces, or all hyperplanes of certain dual polar spaces, arise from embeddings. 相似文献
145.
Marco Caterino Antonello Merlino Anna Balsamo Irene Russo Krauss Silvia Parisi Alessandro Vergara 《Journal of solution chemistry》2014,43(1):135-143
Chemical modifications of protein crystals may be achieved via soaking of reactants from their precipitating solution, through the solvent channel, into the protein matrix. We describe a Raman microscopy approach to follow mercury insertion into cysteine pairs within protein single crystals, via soaking in an aqueous Hg2+ solution. The method has been developed using bovine insulin as the model system. Applying an efficient mercuration protocol, consisting of a first step of disulphide bridge TCEP-induced reduction within the crystal, followed by overnight reaction with a HgCl2 solution, we obtained Hg-derivative crystals. Raman spectra collected on these derivative crystals, kept in the mother liquor, reveal a characteristic Raman band at 335 cm?1, which has been assigned to a –S–Hg–S– bridge. The analysis provides Raman-based markers of mercury binding to cysteines, and thus of mercury intoxication. 相似文献
146.
Meneses AB Antonello S Arévalo MC González CC Sharma J Wallette AN Workentin MS Maran F 《Chemistry (Weinheim an der Bergstrasse, Germany)》2007,13(28):7983-7995
The electron-acceptor properties of series of related sulfides and disulfides were investigated in N,N-dimethylformamide with homogeneous (redox catalysis) and/or heterogeneous (cyclic voltammetry and convolution analysis) electrochemical techniques. The electron-transfer rate constants were determined as a function of the reaction free energy and the corresponding intrinsic barriers were determined. The dependence of relevant thermodynamic and kinetic parameters on substituents was assessed. The kinetic data were also analyzed in relation to corresponding data pertaining to reduction of diaryl disulfides. All investigated reductions take place by stepwise dissociative electron transfer (DET) which causes cleavage of the C(alkyl)--S or S--S bond. A generalized picture of how the intrinsic electron-transfer barrier depends on molecular features, ring substituents, and the presence of spacers between the frangible bond and aromatic groups was established. The reduction mechanism was found to undergo a progressive (and now predictable) transition between common stepwise DET and DET proceeding through formation of loose radical anions. The intrinsic barriers were compared with available results for ET to several classes of dissociative- and nondissociative-type acceptors, and this led to verification that the heterogeneous and the homogeneous data correlate as predicted by the Hush theory. 相似文献
147.
148.
Redenti Enrico Pasini Massimo Ventura Paolo Spisni Alberto Vikmon Maria Szejtli József 《Journal of inclusion phenomena and macrocyclic chemistry》1993,15(3):281-292
Journal of Inclusion Phenomena and Macrocyclic Chemistry - Terfenatine (TFN) is a very hydrophobic antiallergic drug. It exists in three polymorphic and two solvated forms and is practically... 相似文献
149.
We study flat flag-transitive c.c *-geometries. We prove that, apart from one exception related to Sym(6), all these geometries are gluings in the meaning of [6]. They are obtained by gluing two copies of an affine space over GF(2). There are several ways of gluing two copies of the n-dimensional affine space over GF(2). In one way, which deserves to be called the canonical one, we get a geometry with automorphism group G = 22n · L n(2) and covered by the truncated Coxeter complex of type D 2 n . The non-canonical ways give us geometries with smaller automorphism group (G ≤ 22n · (2 n?1)n) and which seldom (never ?) can be obtained as quotients of truncated Coxeter complexes. 相似文献
150.