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91.
Ming-Der Cheng Alvin R. Caparanga Allan N. Soriano Meng-Hui Li 《The Journal of chemical thermodynamics》2010,42(3):342-347
This report presents a new set of values for the solubility of carbon dioxide in the solvent system {water (1) + monoethanolamine (2) + triethanolamine (3)} at T = (313.2, 333.2, 353.2, and 373.2) K and CO2 partial pressures ranging (1.0 to 120) kPa. The results are specific to solvent systems with the following compositions: (i) ω2 = 0.24, ω3 = 0.06, (ii) ω2 = 0.18, ω3 = 0.12, (iii) ω2 = 0.12, ω3 = 0.18, (iv) ω2 = 0.06, ω3 = 0.24, and (v) ω2 = 0, ω3 = 0.30, where ω refers to the mass fraction of the component. The results fit the Deshmukh and Mather model well. 相似文献
92.
Soriano Del Amo D Wang W Jiang H Besanceney C Yan AC Levy M Liu Y Marlow FL Wu P 《Journal of the American Chemical Society》2010,132(47):16893-16899
The Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) is the standard method for bioorthogonal conjugation. However, current Cu(I) catalyst formulations are toxic, hindering their use in living systems. Here we report that BTTES, a tris(triazolylmethyl)amine-based ligand for Cu(I), promotes the cycloaddition reaction rapidly in living systems without apparent toxicity. This catalyst allows, for the first time, noninvasive imaging of fucosylated glycans during zebrafish early embryogenesis. We microinjected embryos with alkyne-bearing GDP-fucose at the one-cell stage and detected the metabolically incorporated unnatural sugars using the biocompatible click chemistry. Labeled glycans could be imaged in the enveloping layer of zebrafish embryos between blastula and early larval stages. This new method paves the way for rapid, noninvasive imaging of biomolecules in living organisms. 相似文献
93.
Dr. Nguyet Trang Thanh Chau Maxime Meyer Dr. Shinsuke Komagawa Dr. Floris Chevallier Prof. Yves Fort Prof. Masanobu Uchiyama Prof. Florence Mongin Dr. Philippe C. Gros 《Chemistry (Weinheim an der Bergstrasse, Germany)》2010,16(41):12425-12433
Homoleptic lithium tri‐ and tetraalkyl zincates were reacted with a set of bromopyridines. Efficient and chemoselective bromine–metal exchanges were realized at room temperature with a substoichiometric amount of nBu4ZnLi2?TMEDA reagent (1/3 equiv; TMEDA=N,N,N′,N′‐tetramethylethylenediamine). This reactivity contrasted with that of tBu4ZnLi2?TMEDA, which was inefficient below one equivalent. DFT calculations allowed us to rationalize the formation of N???Li stabilized polypyridyl zincates in the reaction. The one‐pot difunctionalization of dibromopyridines was also realized using the reagent stoichiometrically. The direct creation of C? Zn bonds in bromopyridines enabled us to perform efficient Negishi‐type cross‐couplings. 相似文献
94.
Zih-Yi Yang Allan N. Soriano Alvin R. Caparanga Meng-Hui Li 《The Journal of chemical thermodynamics》2010,42(5):659-665
In this work, a new set of values for the solubility of carbon dioxide in aqueous mixture containing different concentrations of 2-amino-2-methyl-1-propanol (AMP), a sterically-hindered amine, and piperazine (PZ), an activator, are presented. The results were carefully determined using a 1.0 dm3 stainless steel vapour-recirculation equilibrium cell at T = (313.2, 333.2, and 353.2) K, and pressures up to 152 kPa. The AMP concentrations in the ternary (solvent) mixture were (2 and 3) kmol · m?3; those of PZ’s were (0.5, 1.0, and 1.5) kmol · m?3. The measured equilibrium loading (solubility)/partial pressure pairs at different temperatures and concentration levels were generally consistent with the corresponding values correlated from the Kent–Eisenberg model that has been adapted for the system in the study, where the parameters of the models were determined using the results from this study and relevant data from literature. 相似文献
95.
In this paper consider a vibrating system of Bresse type in a one-dimensional bounded domain with a nonlinear damping acting in the equation of the shear angle displacement, and nonlinear localized damping in other equations. We show the asymptotic stability without imposing conditions about the equal-speed wave propagation, using a method developed by Lasiecka and Tataru [9]. 相似文献
96.
97.
98.
Ang Qian Yee Chan Florence Tan Pei Chin Low Siew Chun 《Journal of Sol-Gel Science and Technology》2018,86(1):226-238
Journal of Sol-Gel Science and Technology - Molecularly imprinted polymer (MIP) is of great attention in biomimetic recognition systems due to its selective molecular recognition towards any guest... 相似文献
99.
Full dynamic free energy minimisation is used to study the stability of different polymorphs of MgCl2, with a new set of interionic potentials derived from ab initio calculations using density functional theory. The calculated difference in free energies between the - and β-phases is extremely small: the vibrational contribution reverses the relative ordering of these two structures obtained in the static limit. We predict the thermal expansion of both forms is highly anisotropic and that, unusually, above ≈60 K the expansion is larger parallel than perpendicular to the layers. 相似文献
100.
Jérôme Dedecker Florence Merlevède Dalibor Volný 《Journal of Theoretical Probability》2007,20(4):971-1004
In this paper we study the central limit theorem and its weak invariance principle for sums of non-adapted stationary sequences,
under different normalizations. Our conditions involve the conditional expectation of the variables with respect to a given
σ-algebra, as done in Gordin (Dokl. Akad. Nauk SSSR 188, 739–741, 1969) and Heyde (Z. Wahrsch. verw. Gebiete 30, 315–320, 1974). These conditions are well adapted to a large variety of examples, including linear processes with dependent innovations
or regular functions of linear processes. 相似文献