Results 221 to 230 of about 272,652 (264)

Basic Techniques Probing Molecular Structure and Interactions

2018
Bringing this best-selling textbook right up to date, the new edition uniquely integrates the theories and methods that drive the fields of biology, biotechnology and medicine, comprehensively covering both the techniques students will encounter in lab classes and those that underpin current key advances and discoveries.
Simon, Anne, Macdonald, J
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Probing the molecular mechanism of interaction between polystyrene nanoplastics and catalase by multispectroscopic techniques

Chemico-Biological Interactions, 2023
Nanoplastics are emerging pollutants that pose a potential threat to the environment and organisms and are widely distributed in environmental samples and food chains. The accumulation of polystyrene nanoplastics (PS-NPs) in an organism can cause oxidative stress. Currently, toxicity studies of PS-NPs mainly focus on the individual and cellular levels,
Shuncheng, Hu, Mengchen, Xu, Zhaohao, Cui, Yihua, Xiao, Changqing, Liu, Rutao, Liu, Guomin, Zhang   +6 more
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Paramagnetic probe technique for studying molecular motions in polymers

European Polymer Journal, 1969
Abstract In the paramagnetic probe technique, information about molecular motion in polymers is obtained using stable organic nitroxide radicals incorporated in polymer matrices. Temperature dependence of radical rotation in polymers is well described by Arrhenius equation.
A.M. Wasserman, A.L. Buchachenko, A.L. Kovarskii, M.B. Neiman   +3 more
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NMR Probes of Molecular Dynamics: Overview and Comparison with Other Techniques

Annual Review of Biophysics and Biomolecular Structure, 2001
▪ Abstract  NMR spin relaxation spectroscopy is a powerful approach for characterizing intramolecular and overall rotational motions in proteins. This review describes experimental methods for measuring laboratory frame spin relaxation rate constants by high-resolution solution-state NMR spectroscopy, together with theoretical approaches for ...
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Molecular contrast in optical coherence tomography by use of a pump–probe technique

Optics Letters, 2003
We describe a novel technique for contrast enhancement in optical coherence tomography (OCT) that makes possible molecular-specific imaging for what is believed to be the first time. A pump-probe technique is employed in which a pulsed pump laser is tuned to ground-state absorption in a molecule of interest.
K Divakar, Rao, Michael A, Choma, Siavash, Yazdanfar, Andrew M, Rollins, Joseph A, Izatt   +4 more
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Probing the Molecular Interaction of Triazole Fungicides with Human Serum Albumin by Multispectroscopic Techniques and Molecular Modeling

Journal of Agricultural and Food Chemistry, 2013
Triazole fungicides, one category of broad-spectrum fungicides, are widely applied in agriculture and medicine. The extensive use leads to many residues and casts potential detrimental effects on aquatic ecosystems and human health. After exposure of the human body, triazole fungicides may penetrate into the bloodstream and interact with plasma ...
Jing, Zhang, Shulin, Zhuang, Changlun, Tong, Weiping, Liu   +3 more
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Molecular aggregation of rhodamine 6G probed by optical and electrochemical techniques

Chemical Physics Letters, 1992
Abstract Emission spectra of rhodamine 6G (R6G) aggregates were observed at 77 K both in water and in alcohols. The temperature behavior of emission and excitation spectra, and their excited state lifetimes illustrated that the transition moment of the lower exciton component, μ, for rhodamine 6G aggregates in alcohols is greater than that in water ...
C.T. Lin, A.M. Mahloudji, Li Li, M.W. Hsiao   +3 more
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The Application of the Molecular Probe Technique to a Study of Polymer Crystallization Rates

Rubber Chemistry and Technology, 1971
Abstract Most experimental methods for following the changes in crystallinity of polymeric systems have involved measurement of volume changes, changes in absorption spectra, and changes in optical properties. The basis of the novel method reported here is that the bulk interaction between small concentrations of a “probe” molecule and a ...
D. G. Gray, J. E. Guillet
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New molecular probe technique for the assessment of ultramicroporous structure

Journal of the Chemical Society, Faraday Transactions, 1993
Adsorption–desorption isotherms of nitrogen and especially hydrogen at 18 °C and pressures up to 1 atm have been found to be good molecular probes to assess specifically ultramicroporous carbon structures such as constrictions and other restricted regions that are responsible for the molecular sieving property of these carbons.
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Study of molecular mobility in ultraoriented polypropylene by the spin‐probe technique

Journal of Polymer Science: Polymer Physics Edition, 1985
AbstractThe rotational mobility of nitroxide radicals in polypropylene samples with draw ratios varying from 1 to 18 has been studied between 30 and 110°C by the ESR technique. The drop in the rotational frequency with increasing orientation correlates very well with the behavior of various other measures of molecular mobility such as organic vapor ...
C. L. Choy, W. P. Leung, T. L. Ma
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