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The Ramanujan Journal - We give q-analogues of three Ramanujan-type series for $$1/\pi $$ from q-analogues of ordinary WZ pairs. The first one is a new q-analogue of the following Ramanujan’s... 相似文献
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Nandhini Muthukrishnan Gregory A. Johnson Alfredo Erazo‐Oliveras Jean‐Philippe Pellois 《Photochemistry and photobiology》2013,89(3):625-630
Cell‐penetrating peptides such as TAT or R9 labeled with small organic fluorophores can lyse endosomes upon light irradiation. The photoendosomolytic activity of these compounds can in turn be used to deliver proteins and nucleic acids to the cytosol of live cells with spatial and temporal control. In this report, we examine the mechanisms by which such fluorescent peptides exert a photolytic activity using red blood cells as a membrane model. We show that the peptides TAT and R9 labeled with tetramethylrhodamine photolyze red blood cells by promoting the formation of singlet oxygen in the vicinity of the cells' membranes. In addition, unlabeled TAT and R9 accelerate the photolytic activity of the membrane‐bound photosensitizer Rose bengal in trans, suggesting that the cell‐penetrating peptides participate in the destabilization of photo‐oxidized membranes. Peptides and singlet oxygen generators therefore act in synergy to destroy membranes upon irradiation. 相似文献
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Sybil O’Reilly Sonia Erazo Victoriano Campos Erika Salas Jaime Baeza AndrÉ Ferraz Jaime Rodriguez Nelson DurÁn 《Applied biochemistry and biotechnology》1991,27(3):267-276
The single cell protein and extracellular enzyme production from a lignocellulolytic fungus,Chrysonilia sitophila, using different carbon sources were evaluated. The mycelial dry mass composition showed a high protein (39.2%) and low nucleic
acid content (3.3%), as well as carbohydrate, fatty acid, fiber, and ash levels comparable with single cell proteins currently
studied. Mycelial protein showed amino acid content similar to or higher than FAO standard requirements. The amino acid, fatty
acid, and carotenoid composition, as well as mycelial mass yield and enzyme production, were dependent on the carbon source
used. Glucose, saccharose, cellobiose, cellulose, microcrystal-line cellulose, lactose, and rice hull as carbon sources were
studied. 相似文献
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Periodica Mathematica Hungarica - For the Fibonacci sequence the identity $$F_n^2+F_{n+1}^2 = F_{2n+1}$$ holds for all $$n \ge 0$$ . Let $${\mathcal {X}}:= (X_\ell )_{\ell \ge 1}$$ be the sequence... 相似文献
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López-Pérez JL Erazo S Delporte C Negrete R Muñoz O García R Backhouse N San Feliciano A 《Magnetic resonance in chemistry : MRC》2005,43(11):943-947
Two new dammarane triterpenoids, 20R,21-epoxydammar-24-ene-3,23-dione and 20R,21-epoxy-3beta-hydroxydammar-24-ene-23-one have been isolated from the aerial parts of Kageneckia angustifolia D. Don, Rosaceae, along with the previously reported triterpenoids oleanolic acid and 3beta-(beta-D-glucosyloxy)-16alpha,23alpha-epoxycucurbita-5,24-dien-11-one and the phenolic prunasin. The structures of these compounds were established by MS, 1D- and 2D-NMR experiments, and the structure of the new compounds were confirmed by X-ray diffraction analysis. 相似文献
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The analysis and design of the extended state observer (ESO) involves a continuous non-smooth structure, thus the study of the ESO dynamic requires mathematical tools of the nonlinear systems analysis. This paper establishes the sufficient conditions for absolute stability of the ESO. Based on this study, a methodology to estimate several nonlinear functions in dynamics systems is proposed. 相似文献
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There is experimental and computational evidence that some important properties such as electrical conductivity and ferroelectricity in the CaTiO3 crystal change according to the dopant states. Using an INDO quantum‐chemical computational method modified for crystal calculations we explore the stability of the La‐doped CaTiO3 crystal in both phases, cubic and orthorhombic. The calculations are carried out by means of the supercell model based on the LUC (large unit cell) approach as it is implemented into the CLUSTERD computer code. The equilibrium geometry for impurity is found together with the crystalline lattice distortions. Atomic displacements and relaxation energies are analyzed in a comparative manner for the two crystallographic phases. A new effect of electron transfer from the local one‐electron energy level within the band‐gap to the conduction band is observed. © 2002 Wiley Periodicals, Inc. Int J Quantum Chem, 2002 相似文献
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