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Sangeeta A Godbole Thirumalai G Krishna Chittaranjan R Bhatia 《Journal of the science of food and agriculture》1994,64(3):331-335
Cajanus trypsin inhibitor (CTI) and Cajanus trypsin-chymotrypsin inhibitor (CTCI) previously purified from cv TAT-10 were further characterised. The modification of the inhibitors revealed the presence of lysine at the trypsin reactive site in both CTI and CTCI. Modification of tyrosine at the reactive site of CTCI did not abolish chymotrypsin inhibition suggesting the presence of leucine or phenylalanine as reported in other chymotrypsin inhibitors. CTCI did not contain tryptophan. Dissociation constants for the inhibitors with bovine trypsin were in the region of 0.69 nmol (CTCI) and 0.029 nmol (CTI). Although the protease inhibitors lost their inhibitory activity on exposure to 2-mercaptoethanol they remained attached to the enzyme. The inhibitors were not very effective against the protease from Helicoverpa armigera which is a serious field pest of Cajanus. Dissociation constants for the inhibitors with the larval enzyme were in the region of 100 nmol. 相似文献
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C. Sukumar V. Janaki K. Vijayaraghavan S. Kamala-Kannan K. Shanthi 《Clean Technologies and Environmental Policy》2017,19(1):251-258
Fixed-bed column studies were conducted to evaluate the potential of co-immobilized (activated carbon and Bacillus subtilis) (CI) beads for the removal of Cr(VI) from aqueous solution. The impact of various parameters such as initial Cr(VI) concentrations (100, 150, and 200 mg/L), flow rate (3, 9, and 15 mL/min), and bed depth (10, 15, and 20 cm) on Cr(VI) adsorption onto CI beads were investigated. The breakthrough time increased with a decrease in initial Cr(VI) concentration and flow rate, and an increase in bed height. The breakthrough data obtained for Cr(VI) removal was more adequately described by the Thomas model with high correlation coefficients (R 2 = 0.982). The eluent, 0.1 M NaOH, provided high elution efficiencies (~90 %) in all the six cycles. Obtained results pointed out that CI beads could potentially be used for the removal of Cr(VI) from aqueous solution. 相似文献
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V. Mahalingam J. Thirumalai 《Journal of Materials Science: Materials in Electronics》2016,27(9):8884-8890
The red emitting Ca0.5Gd(WO4)2:Eu3+ was synthesized by a solid-state reaction method. X-ray diffraction patterns were used to characterize crystal structure as well as phase purity. The results suggest that the as synthesized powder phosphor possess scheelite crystal structure with tetragonal symmetry along with the space group of I41/a. SEM studies reveal that the as synthesized sample show polyhedral morphology with particle size of 5.5 µm. Photoluminescence excitation spectrum depicts that a broad band (from 200 to 300 nm) centered at 242 nm is attributed to the ligand to metal charge transfer transition of WO4 2? and three intense with sharp absorption bands (observed at 394, 464 and 535 nm) are designated as f–f electronic transitions of Eu3+. Photoluminescence emission studies indicate that, under 394 nm UV excitation, a hypersensitive red emission was observed at 617 nm due to the transition from upper 5D0 level to the 7F2 lower level of Eu3+ ion. The spectroscopic behaviour of the as synthesized phosphor Ca0.5Gd(WO4)2:Eu3+ was determined using Judd–Ofelt theory. The CIE color coordinates, colour correlated temperature and luminous efficacies of radiation were estimated. The as obtained results indicating that the Ca0.5Gd(WO4)2:Eu3+ red phosphor is most suitable for solid state lighting applications. 相似文献
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In this paper we classify the complexity of several problems based on Abelian permutation groups and linear congruences using
logspace counting classes. The problems we consider were defined by McKenzie & Cook (1987). 相似文献
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S. Arul L. Vijayaraghavan S.K. Malhotra R. Krishnamurthy 《The International Journal of Advanced Manufacturing Technology》2006,29(7-8):655-662
Drilling trials have been carried out on glass Fibre reinforced plastics (GFRP) with plain high speed steel (HSS), TiN coated
HSS and tipped tungsten carbide drills. Most of the defects in drilling of composites are due to thrust force experienced
by the workpiece. The parametric influence on cutting force was experimentally evaluated. The experimental results show that
the defects toleranced drilling can be attained by proper selection of cutting parameters and tool material. This is substantiated
by monitoring flank wear, hole shrinkage and acoustic emission during drilling. 相似文献
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Kannan K. Thirumalai Rameshbabu S. 《Journal of Mechanical Science and Technology》2018,32(4):1739-1747
Journal of Mechanical Science and Technology - This paper investigates the tribological characteristics of modified jojoba oil (MJO) as a base stoke for SAE20W40 mineral oil (LO). In addition, a... 相似文献
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