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561.
Raja Chouket Agns Pellissier-Tanon Annie Lemarchand Agathe Espagne Thomas Le Saux Ludovic Jullien 《Chemical science》2020,11(11):2882
Interrogating living cells requires sensitive imaging of a large number of components in real time. The state-of-the-art of multiplexed imaging is usually limited to a few components. This review reports on the promise and the challenges of dynamic contrast to overcome this limitation.Interrogating living cells requires sensitive imaging of a large number of components in real time. 相似文献
562.
Motivated with the continued demand for developing quality material showing better response for the efficient removal of organo‐amphiphilic toxicants, we have demonstrated the growth of three‐dimensional polymer organic framework—a covalent crosslinked polymer C2B derived via photon triggered thiol‐alkene click reaction. Instrumentation techniques such as nuclear magnetic resonance, thermogravimetric analysis, and fourier transform infrared spectroscopy were used for the characterization. FESEM and Cryo‐SEM analysis were done to analyze the morphology of the resin. The adsorption and release experiments were done with ultraviolet‐visible spectroscopic technique. The polymer C2B derived from polyolefin and tetrathiol via thiol‐alkene photoclick reaction showed efficiency toward adsorption of organo‐amphiphilic contaminants such as dioxane, dimethylformamide, fluorescein, and rhodamine B (RH). Even the material selectively showed the efficient release of toxicant—RH. Moreover, it can be reused over cycles. This makes the polymer C2B as potential candidate to be commercially viable for textile industries. 相似文献
563.
Venkatesan M. Raja M. Sivalaksmi S. Suresh S. 《Journal of Thermal Analysis and Calorimetry》2022,147(10):5949-5959
Journal of Thermal Analysis and Calorimetry - Energy utilization in building sector constitutes 40% of the total energy consumption of the world, and in this, the wall alone consumes 50% of the... 相似文献
564.
Meccanica - We present an analytical study of the effective viscosity of concentrated suspension of porous spherical particles with a rigid core, under the creeping flow conditions. It is assumed... 相似文献
565.
Nonlinear Dynamics - This paper presents the tracking behavior of fractional-order (FO) variants of the normalized least mean square (NLMS) algorithm in a nonstationary environment modeled as... 相似文献
566.
Maruthachalam Mohanraj Ganesan Ayyannan Gunasekaran Raja Chinnasamy Jayabalakrishnan 《应用有机金属化学》2016,30(7):550-560
Three ruthenium(II) hydrazone complexes of composition [RuCl(CO)(PPh3)2L] were synthesized from the reactions of [RuHCl(CO)(PPh3)3] with hydrazones derived from 4‐methoxybenzhydrazide and 4‐formylbenzoic acid (HL1), 4‐methylbenzaldehyde (HL2) and 2‐bromobenzaldehyde (HL3). The synthesized hydrazone ligands and their metal complexes were characterized using elemental analysis and infrared, UV–visible, NMR (1H, 13C and 31P) and mass spectral techniques. The hydrazone ligands act as bidentate ones, with O and N as the donor sites, and are predominantly found in the enol form in all the complexes studied. The molecular structures of the ligands HL1, HL2 and HL3 were determined using single‐crystal X‐ray diffraction. The interactions of the ligands and the complexes with calf thymus DNA were studied using absorption spectroscopy and cyclic voltammetry which revealed that the compounds could interact with calf thymus DNA through intercalation. The DNA cleavage activity of the complexes was evaluated using a gel electrophoresis assay which revealed that the complexes act as good DNA cleavage agents. In addition, all the complexes were subjected to antioxidant assay, which showed that they all possess significant scavenging activity against 2,2‐diphenyl‐2‐picrylhydrazyl, OH and NO radicals. The in vitro cytotoxic effect of the complexes examined on cancerous cell lines (HeLa and MCF‐7) showed that the complexes exhibit substantial anticancer activity. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
567.
Baladev Ash Raja Kishore Paramguru Barada Kanta Mishra 《Electrochemistry communications》2010,12(1):48-51
We investigate the electrode reactions involved in the electrolytic precipitation of nickel hydroxide from nickel nitrate through quantitative assessment of the reaction products using stainless steel cathode with Ti and Ni anodes. The nitrate ion is reduced at the cathode to form nitrite and ammonium ion, the later being the major product. The production of ammonium ion followed either directly via reduction of nitrate to ammonium ion or in steps via nitrate reduction to nitrite which further reduced to ammonium ion. Finally, we report XRD measurements, tap density, and the discharge capacity performed on the electrolytically precipitated Ni(OH)2. 相似文献
568.
Various nitrogen-fused tricyclic compounds, having benzoindolizidine and benzopyrrolizidines ring systems were synthesized via ene-ene metathesis using the first and second-generation Grubbs catalyst. The ene-ene metathesis proceeded smoothly in refluxing CH2Cl2 with 3.0 mol % of G1, giving good yields (78-86%) of the benzoindolizidine products 12a,b. The benzopyrrolizidine 6 was prepared after optimization in 64% yield by using 5.0+5.0 mol % of G2. The resulting olefin moiety of the indolizidine framework is a suitable precursor for polyhydroxy structures via the Sharpless process. The structures of the polyhydroxylated adducts were determined by 1H NMR spectra and single-crystal X-ray analysis. 相似文献
569.
Himalay Basumatary Mithun Palit J. Arout Chelvane S. Pandian M. Manivel Raja V. Chandrasekaran 《Journal of magnetism and magnetic materials》2010,322(18):2769-2772
Alloys of Fe77Ga23Bx (x=0, 0.025, 0.050, 0.075 and 0.1) were heat treated at 1000 °C/10 h and characterized for microstructural features and magnetostriction. The study indicates that the parent alloy consists of three phases viz. A2 as the major phase and L12 and DO3 as minor phases. However, the volume fraction of L12 and DO3 decreases with B addition and as a result magnetostriction improves. The decrease in volume fraction of these phases is attributed to B-segregation to the grain boundary, which seems to prevent the formation of these phases. The alloy with x=0.1, however, exhibits an additional Fe2B phase and consequently its presence leads to the re-emergence of the DO3 phase, affecting the magnetostriction. 相似文献
570.
Vasili L. Kasyutich R.K. Raja Ibrahim Philip A. Martin 《Infrared Physics & Technology》2010,53(5):381-387
The performance of widely tuneable, continuous wave (cw) external-cavity quantum cascade laser (EC-QCL) has been evaluated for direct absorption spectroscopy measurements of nitric oxide (NO) in the wavenumber range 1872–1958 cm?1 and with a 13.5 cm long optical cell. In order to reduce the absorption measurement errors due to the large variations of laser intensity, normalisation with a reference channel was used. Wavelength stability within the scans was analysed using the Allan plot technique for the reduced wavenumber range of 1892.4–1914.5 cm?1. The Allan variances of the NO absorption peak centres and areas were observed to increase with successive scan averaging for all absorption peaks across the wavelength scan, thus revealing short- and long-term drifts of the cw EC-QCL wavelength between successive scans. As an example application, the cw EC-QCL was used for NO measurements in the exhaust of an atmospheric pressure packed-bed plasma reactor applied to the decomposition of dichloromethane in waste gas streams. Etalon noise was reduced by subtracting a reference spectrum recorded when the plasma was off. The NO limit of detection (SNR = 1) was estimated to be ~2 ppm at atmospheric pressure in a 20.5 cm long optical cell with a double pass and a single 7 s scan over 1892.4–1914.5 cm?1. 相似文献