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121.
Noah P. Tu Amanda W. Dombrowski Gashaw M. Goshu Anil Vasudevan Stevan W. Djuric Ying Wang 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(24):8071-8075
Technologies that enable rapid screening of diverse reaction conditions are of critical importance to methodology development and reaction optimization, especially when molecules of high complexity and scarcity are involved. The lack of a general solid dispensing method for chemical reagents on micro‐ and nanomole scale prevents the full utilization of reaction screening technologies. We herein report the development of a technology in which glass beads coated with solid chemical reagents (ChemBeads) enable the delivery of nanomole quantities of solid chemical reagents efficiently. By exploring the concept of preferred screening sets, the flexibility and generality of this technology for high‐throughput reaction screening was validated. 相似文献
122.
Stevan Pilipovi? 《Journal of Mathematical Analysis and Applications》2005,302(1):97-128
We consider the main notions of G-quasiasymptotic (G-q.a.) analysis: G-q.a. behavior at zero, G-q.a. expansion at infinity, Sc-asymptotic and boundedness, Sc-expansion at infinity and their applications to the asymptotic behavior of the solution to some types of nonlinear PDEs in Colombeau algebra of generalized functions G. 相似文献
123.
[structure: see text] The synthesis of a collection of bicyclic fused azepinones via an intramolecular beta-lactam ring-opening strategy is reported. Depending on the chirality of the various inputs, complete stereocontrol of product formation is achieved. 相似文献
124.
125.
The equivalence of several definitions of convolution of two Roumieu ultradistributions is proved. For that purpose, the $\varepsilon $ tensor product of $\dot{\tilde{\mathcal{B }}}^{\{M_p\}}$ and a locally convex space $E$ is considered. 相似文献
126.
Li Y Jones W Rasti F Blaga I Bogdan G Eberhart D Kobrin B Lee D Nielsen B van Gelder E Jovanovich S Stern S 《Lab on a chip》2011,11(15):2541-2550
We describe a programmable microfluidic system with onboard pumps and valves that has the ability to process reaction volumes in the sub-microlitre to hundred microlitre range. The flexibility of the architecture is demonstrated with a commercial molecular biology protocol for mRNA amplification, implemented without significant modification. The performance of the microchip system is compared to conventional bench processing at each stage of the multistep protocol, and DNA microarrays are used to assess the quality and performance of bench- and microchip-amplified RNA. The results show that the microchip system reactions are similar to bench control reactions at each step, and that the microchip- and bench-derived amplified RNAs are virtually indistinguishable in differential microarray analyses. 相似文献
127.
128.
Maja C. Pagnacco Jelena P. Maksimovi Nenad T. Nikoli Danica V. Bajuk Bogdanovi Milan M. Kragovi Marija D. Stojmenovi Stevan N. Blagojevi Jelena V. Senanski 《Molecules (Basel, Switzerland)》2022,27(15)
Indigo carmine is a commonly used industrial blue dye. To determine its concentration in a commercially available food dye composed of a mixture of indigo carmine and D-glucose, this paper characterizes it through (ATR, KBr) FTIR micro-Raman as well as UV/Vis and clock: Briggs–Rauscher (BR) oscillatory reaction methods. The indigo carmine was detected in the bulk food dye only by applying micro-Raman spectroscopy, indicating a low percentage of the indigo carmine present. This research provides an improvement in the deviations from the experimental Raman spectrum as calculated by the B97D/cc-pVTZ level of theory one, resulting in a better geometrical optimization of the indigo carmine molecule compared to data within the literature. The analytical curves used to determine indigo carmine concentrations (and quantities) in an aqueous solution of food dye were applied by means of UV/Vis and BR methods. BR yielded significantly better analytical parameters: 100 times lower LOD and LOQ compared to commonly used UV/Vis. The remarkable sensitivity of the BR reaction towards indigo carmine suggests that not only does indigo carmine react in an oscillatory reaction but also its decomposition products, meaning that the multiple oxidation reactions have an important role in the BR’s indigo carmine mechanism. The novelty of this research is the investigation of indigo carmine using a clock BR reaction, opening new possibilities to determine indigo carmine in other complex samples (pharmaceutical, food, etc.). 相似文献