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Shib Sankar Giri,Kalidas Das,Prabir Kumar Kundu 한국CDE학회 2020 Journal of computational design and engineering Vol.7 No.3
Hydromagnetic nanofluid flow through an incompressible stretching cylinder accompanying with homogeneous–heterogeneous chemical reaction has been executed in current literature. SWCNTs (single-walled carbon nanotubes) and MWCNTs (multiwalled carbon nanotubes) as nanoparticles in appearance of prescribed heat flux are accounted here. Leading equations of the assumed model have been normalized through similarity practice and succeeding equations resolved numerically by spending RK-4 shooting practice and analytically by engaging differential transform method. The impulse of promising flow constraints on the flow characteristic is finalized precisely through graphs and charts. We perceived that velocity outlines and temperature transmission are advanced in MWCNT than SWCNT in every case.
Giri, Sib Sankar,Sen, Shib Sankar,Chi, Cheng,Kim, Hyoun Joong,Yun, Saekil,Park, Se Chang,Sukumaran, V. Hindawi Publishing Corporation 2015 Journal of immunology research Vol.2015 No.-
<P>The present study aimed to investigate the effects of<I> Chlorophytum borivilianum</I> polysaccharide (CBP), as a dietary supplement administered at varying concentrations with feed (basal diet), on various cytokine-related responses in<I> Labeo rohita</I> fingerlings. Immune parameters and immune-related gene expressions were measured at 3rd, 4th, and 5th week after feeding. The results revealed that dietary administration of CBP at 0.2% and 0.4% for 4 weeks significantly upregulated serum lysozyme and phagocytic activity. Complement C3 and respiratory burst activity (RBA) were significantly higher after 4 weeks of CBP feeding. The immune related genes<I> IL-8</I>,<I> IL-1β</I>,<I> TNF-α</I>, and<I> iNOS</I> were downregulated (<I>P</I> < 0.05) in groups with 0.2% and 0.4% CBP supplemented diets at week 4. Expression of anti-inflammatory cytokines (<I>IL-10</I> and<I> TGF-β</I>) was also downregulated (<I>P</I> < 0.5) after 4 weeks of feeding with 0.2% to 0.8% CBP. However, five weeks of CBP administration had no significant effect on immune gene expression, except<I> TNF-α</I> and<I> IL-8</I>. Fish fed with 0.4% CBP for 4 weeks showed maximum resistance against<I> Aeromonas hydrophila</I> (73.3% survival) compared to control. From these results, we recommend that CBP administration at 0.4% for 4 weeks could effectively improve immune response and disease resistance in<I> L. rohita</I>.</P>
Sib Sankar Giri,V. Sukumaran,Shib Sankar Sen,M. Oviya,B. Nazeema Banu,Prasant Kumar Jena 한국미생물학회 2011 The journal of microbiology Vol.49 No.3
An extracellular detergent tolerant protease producing strain VSG-4 was isolated from tropical soil sample and identified as Bacillus subtilis based on morphological, biochemical characteristics as well as 16S-rRNA gene sequencing. The VSG-4 protease was purified to homogeneity using ammonium sulphate precipitation,dialysis and sephadex G-200 gel permeation chromatography with a 17.4 purification fold. The purified enzyme was active and stable over a broad range of pH (8.0-11.0, optimum at 9.0) and temperature (40°C to 60°C, optimum at 50°C). The thermostability of the enzyme was significantly increased by the addition CaCl_2. This enzyme was strongly inhibited by PMSF and DFP, suggesting that it belongs to the serine protease superfamily. The purified VSG-4 alkaline protease showed remarkable stability in anionic (5 mM SDS) and ionic (1% Trion X-100 and 1% Tween 80) detergents. It retained 97±2% and 83.6±1.1% of its initial activity after 1 h preincubation in the presence of 1% H_2O_2 and 1% sodium perborate, respectively. Furthermore, the purified enzyme showed excellent stability and compatibility with some commercial laundry detergents besides its stain removal capacity. Considering these promising properties, VSG-4 protease may find tremendous application in laundry detergent formulations.