排序方式: 共有15条查询结果,搜索用时 31 毫秒
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Venugopal D. V. R. Karteek Rao Amperayani Uma Devi Parimi Sastry Y. N. Aruna Lakshmi K. Tarak Ramji M. Shiralgi Y. 《Research on Chemical Intermediates》2017,43(10):5755-5778
Research on Chemical Intermediates - Antibiotic-resistant penicillin binding protein (PBPs) production is one of the reasons why bacteria develop resistance to β-lactam antibiotics, and this... 相似文献
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Karteek Boga Sashivinay Kumar Gaddam Ramakishan Rao Chepuri Aruna Palanisamy 《先进技术聚合物》2019,30(11):2742-2749
An eco‐friendly coating system, which is largely biobased, has been developed from castor and cottonseed oil. Cottonseed oil was functionalized with maleic anhydride by “ene” reaction to give maleinized cottonseed oil (MACSO); the anhydride groups were reacted with isocyanates to yield –NCO terminated polyurethane prepolymer. The prepolymer was further chain extended with hydroxyl groups of castor oil to give polyurethane‐imides (PUIs). The cross‐linked films thus obtained had good mechanical properties, and the imide groups in the backbone improved the corrosion resistance of PUIs as revealed by potentiodynamic polarization study. With increasing content of MACSO, thermal stability, glass transition temperatures (Tg), tensile strength, and corrosion resistance of resulting PUIs significantly increased. 相似文献
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Karteek S. Durga Reddy A. Gopi Tej M. Bhuvan Rao M. V. Basaveswara 《Russian Journal of Organic Chemistry》2021,57(2):272-282
Russian Journal of Organic Chemistry - A new series of fused tricyclic coumarin derivatives were designed, synthesized by a simple and convenient method, starting from 4-hydroxycoumarin and... 相似文献
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Srinivasa Rao Karumuri J. Vijaya Sekhar V. Sreeram V. Uma Maheswara rao M.V. Basaveswara Rao 《Journal of Molecular Spectroscopy》2011,269(1):119-123
Resonance Raman spectra of oxygenated and deoxygenated functional erythrocytes are calculated by using Lie algebraic technique at 785 nm. The results are obtained by this method is accuracy with the experimental data. So, the algebraic techniques are appropriate to the Raman spectra of red blood cells. 相似文献
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Synthesis of 1-aryltetralins is described by the Fridel-Crafts arylation of 1-tetrols with phenol. 相似文献
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Naimish P. Sardesai Karteek Kadimisetty Ronaldo Faria James F. Rusling 《Analytical and bioanalytical chemistry》2013,405(11):3831-3838
We describe an electrochemiluminescence (ECL) immunoarray incorporated into a prototype microfluidic device for highly sensitive protein detection and apply this system to accurate, sensitive measurements of prostate-specific antigen (PSA) and interleukin-6 (IL-6) in serum. The microfluidic system employed three molded polydimethylsiloxane (PDMS) channels on a conductive pyrolytic graphite chip (2.5?×?2.5 cm) inserted into a machined chamber and interfaced with a pump, switching valve, and sample injector. Each of the three PDMS channels encompasses three 3 μL analytical wells. Capture-antibody-decorated single-wall carbon nanotube forests are fabricated in the bottom of the wells. The antigen is captured by these antibodies on the well bottoms. Then, a RuBPY-silica-secondary antibody (Ab2) label is injected to bind to antigen on the array, followed by injection of sacrificial reductant tripropylamine (TPrA) to produce ECL. For detection, the chip is placed into an open-top ECL measuring cell, and the channels are in contact with electrolyte in the chamber. Potential applied at 0.95 V versus Ag/AgCl oxidizes TPrA to produce ECL by redox cycling the RuBPY species in the particles, and ECL light is measured by a charge-coupled device camera. This approach achieved ultralow detection limits of 100 fg?mL?1 for PSA (9 zeptomole) and 10 fg?mL?1 (1 zeptomole) for IL-6 in calf serum, a 10–25-fold improvement of a similar non-microfluidic array. PSA and IL-6 in synthetic cancer patient serum samples were detected in 1.1 h and results correlated well with single-protein enzyme-linked immunosorbent assays. 相似文献
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A.S.R. Anjaneyulu A.Madhusudhana rao V.Kameswara Rao L.Ramachandra Row Andrew Pelter Robert S. Ward 《Tetrahedron》1977,33(1):133-143
The structures of six new lignans isolated from the heartwood of Gmelina arborea have been determined. They are 6“ - bromo - isoarboreol, 4 - hydroxysesamin, 4,8 - dihydroxysesamin, 1,4 - dihydroxysesamin (gummadiol), 2 - piperonyl - 3 - hydroxymethyl - 4 - (α - hydroxy - 3,4 - methylenedioxybenzyl) - 4 - hydroxytetrahydrofuran, and the 4 - O - glucoside of 4 - epigummadiol. The 1H and 13C NMR and mass spectra of these compounds and their derivatives are discussed, and the structure previously assigned to a germination inhibitor from Aegilops ovata is questioned. 相似文献