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1.
El Khatib M Elagawany M Jabeen F Todadze E Bol'shakov O Oliferenko A Khelashvili L el-Feky SA Asiri A Katritzky AR 《Organic & biomolecular chemistry》2012,10(25):4836-4838
Chemical ligation via O- to N-acyl transfer of O-acylated serine containing peptides affords serine containing native peptides via 8- and 11-membered cyclic transition states opening the door to a wide variety of potential applications to peptide elaboration. The feasibility of these traceless chemical ligations is feasible as supported by computation. 相似文献
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Deanna Marcano Jeannette De Mndez Ana C. Ortiz Mirna Salinas 《Magnetic resonance in chemistry : MRC》1984,22(11):736-738
The 13C chemical shift data of several D-homoandrostanes with heteroatoms (N,O) in the 17a-position are reported. Heteroatom effects on the shieldings of the carbons of rings C and D are discussed. 相似文献
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Diacetylene-containing polyesters and polyurethanes were prepared by the reaction of m,m-butadiynylenedibenzyl alcohol with isophthaloyl chloride, sebacoyl chloride, hexamethylene diisocyanate and 2,4-tolylene diisocyanate. Their thermal behavior was studied by optical microscope and differential scanning calorimetry (DSC). The polyesters were crystalline. The polyurethane prepared from hexamethylene diisocyanate and polyphthalates crystallized on cooling from their melts. All turned a reddish brown color on heating at temperatures above 200°C, and prolonged heating led to a black resin, but thermal decomposition could not be avoided. Irradiation by γ-ray and UV light at room temperature deepened the color of the films, but the polymerization of the diacetylene groups was not appreciable. Simultaneous heating and irradiation was necessary to obtain transparent, amorphous, wine red colored films. 相似文献
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Dide Boelens Roberta Fogliatto Mariot Mirna Ghemrawi Ate D. Kloosterman Bruce R. McCord 《Electrophoresis》2021,42(12-13):1352-1361
There are situations in which it would be very valuable to have a DNA profile within a short time; for example, in mass disasters or airport security. In previous work, we have promoted reduced size STR amplicons for the analysis of degraded DNA. We also noticed that shorter amplicons are more robust during amplification, making them inhibition resistant, and potentially applicable to high-speed direct PCR. Here, we describe a set of miniSTRs capable of rapid direct PCR amplification. The selected markers are a subset of the Combined DNA Index System (CODIS) loci modified to permit high-speed amplification. Using the proposed protocol, the amplification of eight loci plus amelogenin directly from a saliva sample can be completed in 7 min and 38 s using a two-step PCR with 30 cycles of 98°C for 2 s and 62°C for 7 s on a Streck Philisa thermocycler. Selection of DNA polymerase, optimization of the two-step PCR cycling conditions, the primer concentrations, and the dilution of saliva is described. This method shows great potential as a quick screening method to obtain a presumptive DNA profile when time is limited, particularly when combined with high-speed separation and detection methods. 相似文献
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Ana C. R. Melo Edjane F. B. Silva Larissa C. L. F. Araujo Mirna F. Farias Antonio S. Araujo 《Journal of Thermal Analysis and Calorimetry》2011,106(3):691-696
In this study, were studied the degradation of pure sunflower oil and mixed with H-Beta zeolite. This zeolite was synthesized
by the hydrothermal method, followed by calcination and ion exchanged. The characterization of the zeolite was performed by
X-ray diffraction and nitrogen adsorption/desorption by the method of BET. The analysis showed that H-Beta zeolite presented
a good crystallinity and the template was completely removed from the catalyst. The thermal and catalytic degradation study
was carried out using the TG/DTG method in multiple heating rates of 5, 10, and 20 °C min−1. The isoconversion method proposed by Vyazovkin was applied to determine the kinetic parameters for degradation of the sunflower
oil. The activation energy for the degradation process of pure sunflower oil was 193 kJ mol−1, while for sunflower oil mixed with 20% of H-Beta zeolite was equivalent to 88 kJ mol−1. It was verified that for the degradation of 90% of the sunflower oil mixed with H-Beta, for a period of 1 h, a temperature
of 356 °C was required, whereas for the pure vegetable oil, this value was of 387 °C, at the same time period, showing that
the catalyst was effective for the degradation process of sunflower oil. 相似文献
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Jean M. J. Tronchet Guido Zosimo-Landolfo Fabienne Villedon-Denaide Mirna Balkadjian Daniel Cabrini Françoise Barbalat-Rey 《Journal of carbohydrate chemistry》2013,32(6):823-835
ABSTRACT Cyclopentylidene ketals, moderately more acid-labile than their isopropylidene analogs, offer an alternative to the latter blocking groups. They have been shown to resist a large variety of reaction conditions commonly encountered in carbohydrate chemistry. 相似文献
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Newly generated cells are increased in hippocampus of adult mice lacking a serine protease inhibitor
Maddalena M Lino Catherine Vaillant Slobodanka Orolicki Melanie Sticker Mirna Kvajo Denis Monard 《BMC neuroscience》2010,11(1):70
Background
Neurogenesis in the hippocampal dentate gyrus and the subventricular zone occurs throughout the life of mammals and newly generated neurons can integrate functionally into established neuronal circuits. Neurogenesis levels in the dentate gyrus are modulated by changes in the environment (enrichment, exercise), hippocampal-dependent tasks, NMDA receptor (NMDAR) activity, sonic hedgehog (SHH) and/or other factors. 相似文献10.
We prove that ♣ does not imply the existence of a Suslin tree, so answering a question of I. Juhász.
The authors thank the Israel Academy of Sciences and Humanities for partial support through the Basic Research Foundation
Grant number 0327398. Mirna Džamonja would in addition like to thank The Hebrew University of Jerusalem and The Lady Davis
Foundation for the Forchheimer Postdoctoral Fellowship during the academic year 1994/95, and Rutgers University for their
hospitality during a visit in November 1995, when part of the research for this paper was conducted. Some of the research
was also conducted while Mirna Džamonja was a visiting assistant professor at the University of Wisconsin-Madison. This publication
is denoted [DjSh 604] in the list of publications of Saharon Shelah. 相似文献