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排序方式: 共有102条查询结果,搜索用时 31 毫秒
81.
Jagadeesan Lakshmipraba Rajadurai Vijay Solomon Ponnambalam Venuvanalingam Anvarbatcha Riyasdeen Rajakumar Dhivya 《Journal of biomolecular structure & dynamics》2013,31(4):877-891
A series of surfactant–copper(II) Schiff base complexes (1–6) of the general formula, [Cu(sal-R2)2] and [Cu(5-OMe-sal-R2)2], {where, sal?=?salicylaldehyde, 5-OMe-sal?=?5-methoxy- salicylaldehyde, and R2?=?dodecylamine (DA), tetradecylamine (TA), or cetylamine (CA)} have been synthesized and characterized by spectroscopic, ESI-MS, and elemental analysis methods. For a special reason, the structure of one of the complexes (2) was resolved by single crystal X-ray diffraction analysis and it indicates the presence of a distorted square-planar geometry in the complex. Analysis of the binding of these complexes with DNA has been carried out adapting UV-visible-, fluorescence-, as well as circular dichroism spectroscopic methods and viscosity experiments. The results indicate that the complexes bind via minor groove mode involving the hydrophobic surfactant chain. Increase in the length of the aliphatic chain of the ligands facilitates the binding. Further, molecular docking calculations have been performed to understand the nature as well as order of binding of these complexes with DNA. This docking analysis also suggested that the complexes interact with DNA through the alkyl chain present in the Schiff base ligands via the minor groove. In addition, the cytotoxic property of the surfactant–copper(II) Schiff base complexes have been studied against a breast cancer cell line. All six complexes reduced the visibility of the cells but complexes 2, 3, 5, and 6 brought about this effect at fairly low concentrations. Analyzed further, but a small percentage of cells succumbed to necrosis. Of these complexes (6) proved to be the most efficient aptotoxic agent. 相似文献
82.
Identification and characterization of the dTDP-rhamnose biosynthesis and transfer genes of the lipopolysaccharide-related rfb locus in Leptospira interrogans serovar Copenhageni. 总被引:3,自引:1,他引:2
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M Mitchison D M Bulach T Vinh K Rajakumar S Faine B Adler 《Journal of bacteriology》1997,179(4):1262-1267
83.
Rajakumar Govindasamy Thiruvengadam Muthu Mydhili Govindarasu Gomathi Thandapani Chung Ill-Min 《Bioprocess and biosystems engineering》2018,41(1):21-30
Bioprocess and Biosystems Engineering - Bio-mediated synthesis of zinc oxide nanoparticles (ZnO NPs) was carried out by utilizing the reducing and capping potential of Andrographis paniculata leaf... 相似文献
84.
Rajakumar P Selvam S Shanmugaiah V Mathivanan N 《Bioorganic & medicinal chemistry letters》2007,17(18):5270-5273
Synthesis of chiral permanent fluorophoric biscyclic macrocycles incorporating anthraquinone and (S)-BINOL core is described. Interestingly, the biscyclic macrocycle 1 exhibited remarkable antibacterial activity against most of the pathogenic bacteria in the tested concentrations as compared to the other three compounds 2, 14 and 17 as well as the test control, tetracycline. Further biscyclophanes 1 and 2 exhibited permanent fluorescence sensing property even under highly acidic conditions. 相似文献
85.
Alroobaea Roobaea Arul Rajakumar Rubaiee Saeed Alharithi Fahd S. Tariq Usman Fan Xincan 《Cluster computing》2022,25(3):1805-1816
Cluster Computing - The Internet of Things (IoT) is made up of intelligent devices that interact with each other. It allows information to be gathered and shared by these devices. In addition, IoT... 相似文献
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87.
P. M. Ayyasamy R. Banuregha G. Vivekanandhan S. Rajakumar R. Yasodha S. Lee P. Lakshmanaperumalsamy 《World journal of microbiology & biotechnology》2008,24(11):2677-2684
In this study, we attempted two investigational systems: one is treatment of sago industry effluent by aerobic bacterial consortium
and the other is impact of treated and untreated effluent on seed germination. For the treatment system, the starch degrading
bacteria were isolated from sago industry effluent and effluent contaminated soil. The genera, Alcaligenes, Bacillus and Corynebacterium were found efficient in starch degradation. The selected isolates were tested for their efficiency on the degradation of
starch both in Mineral Salts Medium (MSM) and in sago industry effluent. About 85% of the starch was degraded in MSM by a
bacterial consortium composed of Alcaligenes, Bacillus and Corynebacterium, whereas in effluent the degradation of starch was only 63%. The physico-chemical properties such as electrical conductivity,
total solids, suspended solids, dissolved solids, BOD, COD, nitrogen and phosphate were found decreased in effluent after
72 h. The pH of the effluent was relatively increased from 3 to 6.7. The study of seed germination (maize and green gram)
was carried out at 25, 50, 75 and 100% concentrations of treated and untreated effluent using soil sowing method. Shoot length,
root length, fresh weight, dry weight and chlorophyll content showed an increase when treated effluent was tested whereas
a decrease of growth was noticed in untreated effluent tested seedlings. The results revealed that effluent treated by aerobic
microorganisms has no negative impact on the seed germination and can be effectively used for irrigation. 相似文献
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