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A series of metal carboxylates containing pyridine N-oxide are prepared via one pot synthesis and solid phase synthesis. The structural variations from metal to metal are observed. In the case of reactions of manganese(II) acetate with pyridine N-oxide in the presence of aromatic carboxylic acids, polymeric complexes with bridging aromatic carboxylate as well as bridging pyridine N-oxide are observed. Whereas, the reaction of copper(II) acetate with pyridine N-oxide in the presence of an aromatic carboxylic acid led to mononuclear or binuclear paddle wheel carboxylate complexes with monodentate pyridine N-oxide. Co-crystal of two neutral complexes having composition [Cu2(OBz)4(MeOH)2][Cu2(OBz)4(pyO)2] (where OBz = benzoate, pyO = pyridine N-oxide) each neutral parts have paddle wheel structure. Solid phase reaction of zinc chloride with sodium benzoate prepared in situ and pyridine N-oxide leads to a tetra-nuclear zinc complex. 相似文献
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Using an equilibrium dialysis technique, moles (Gamma(2)(1)) of cationic and anionic surfactants bound per kilogram of proteins of various types in aqueous media have been measured previously in this laboratory under different physicochemical conditions. From a thermodynamic analysis in the present paper, Gamma(2)(1) has been shown to be equal to the Gibbs relative excess of surfactant per kilogram of protein at a measured value of solute activity, a(2). The values of relative solvent excesses, Gamma(2)(1) (which are negative for surfactants) can be estimated from values of Gamma(2)(1) and a(2). Using the Gibbs-Duhem relationship for protein solution inside the dialysis bag and dialysate solutions respectively at equilibrium, an integrated expression for the standard free energy change, DeltaG(o) (in kilojoules per kilogram of protein for binding with ligand as a result of the change of a(2) from zero to unity) can be calculated from experimental data. The isopiestic vapour pressure technique was used extensively for evaluation of negative binding (-Gamma(2)(1)) of inorganic salts to proteins of different types for various values of a(2) of salts present in the bulk media. With some modifications of our derived equations for free energy of binding in such a system, DeltaG(o) has been evaluated for the change of mean activity of electrolyte from zero to unity in the rational scale. DeltaG(o) is positive since Gamma(2)(1) is negative and Gamma(2)(1) is positive for such ionic systems. DeltaG(o) in all cases, however, are expressed in terms of the standard state of reference of unit activity so that their magnitudes and sign can be related to the relative affinities of a solute for binding with proteins in aqueous media. 相似文献
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Isolation ofThiobacillus ferrooxidans from various habitats and their growth pattern on solid medium
Different strains of iron-oxidizingThiobacillus ferrooxidans were grown and purified on solid medium containing Bapco agar, agarose, and carrageenan (Type 1). These strains produced easily countable isolated colonies that could be transferred after 7 days of incubation at 30°C. Increase in viable cell number in relation to growth and iron oxidation was studied by both microscopic count and direct plating method. Colony morphology of different strains growing on solid medium helped in differentiating the colony types. 相似文献
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Sukham Munilkumar Yumnam Rameshori W. Romen Mangang Makamguang Kamei Yengkhom Chinglemba Annam Pavan-Kumar Bijay Kali Mahapatra Arabinda Das Md. Abu Hanif Muhammad Abu Bakar Siddik 《Zeitschrift fur angewandte Ichthyologie》2021,37(2):356-358
The length-weight relationships (LWRs) of six Nemacheilid species (Schistura chindwinica, S. fasciata, S. khugae, S. minuta, S. reticulata and S. rubrimaculata) have been analyzed. Fish samples were collected on quarterly basis from March 2018 to February 2019. Sampling was performed using cast nets (mesh size 5–10 mm; about 50 sq m area covered each time and water depth was 4 ft approx.), and electrofishing (Ultrasonic Inverter Electro Fisher, 24 volts, 4 m) in the day time. The total length (TL) of individual fish was measured to 0.1 cm with a digital caliper and body weights (BW) were measured to 0.001 g with digital electronic balances. The parameters for the LWR equations were calculated, and the respective statistics such as the 95% confidence interval for parameters “a” and “b” are provided as well as the coefficient of correlation. For five species a new maximum total length has been documented. 相似文献
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Sarkar Monaj Kumar Kar Amrita Jayaraman Adithyan Shanmugam Karthi Vadivel Vellingiri Mahapatra Santanu Kar 《Molecular biology reports》2021,48(6):5327-5334
Molecular Biology Reports - Myricitrin, a naturally occurring flavonoid in Madhuca longifolia, possesses several medicinal properties. Even though our earlier work revealed its role against the... 相似文献
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Punja Harshitha K. Nanjappa Dechamma Pandyanda Babu Nishith Kalladka Krithika Shanti Priya Dias B. Chakraborty Gunimala Rao Sudhindra M. Chakraborty Anirban 《Molecular biology reports》2021,48(6):5093-5097
Molecular Biology Reports - TP53 functions primarily as a tumor suppressor, controlling a myriad of signalling pathways that prevent a cell from undergoing malignant transformation. This tumor... 相似文献
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V. Haridas Kullampalayam Shanmugam Rajgokul Sandhya Sadanandan Tanvi Agrawal Vats Sharvani M. V. S. Gopalakrishna M. B. Bijesh Kanhaiya Lal Kumawat Anirban Basu Guruprasad R. Medigeshi 《PLoS neglected tropical diseases》2013,7(1)