207 research outputs found
A Surface Plasmon Resonance Bio-Sensor based on Dual Core D-Shaped Photonic Crystal Fibre Embedded with Silver Nanowires for Multi-Sensing
No full textK. Senthilnathan and K. Nakkeeran acknowledge the ASEM-DUO for support in the form of an International Joint Project Grant (2020 DUO-India-Scotland Professor Fellowship Award).Peer reviewe
Robust pedestal-free pulse compression in cubic-quintic nonlinear media
No full textAuthor name used in this publication: P. K. A. Wai2008-2009 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
Nearly chirp- and pedestal-free pulse compression in nonlinear fiber Bragg gratings
No full textAuthor name used in this publication: P. K. A. Wai2008-2009 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
Temperature and matrix effects on competitive intermolecular and intramolecular reaction of benzylchlorocarbenes in ethanol
No full textPT: J; CR: GRILLER D, 1982, J AM CHEM SOC, V104, P5549 LIN CT, 1980, TETRAHEDRON LETT, V21, P3553 LIU MTH, 1983, TETRAHEDRON LETT, P5713 MOSS RA, 1978, J AM CHEM SOC, V100, P4475 MOSS RA, 1978, J CHEM SOC CHEM COMM, P255 MOSS RA, 1981, TETRAHEDRON LETT, V22, P997 POMERANTZ M, 1973, J AM CHEM SOC, V95, P5877 SCHAEFER HF, 1979, ACCOUNTS CHEM RES, V12, P288 SENTHILNATHAN VP, 1980, J AM CHEM SOC, V102, P7637 SENTHILNATHAN VP, 1981, J AM CHEM SOC, V103, P5503 SU DTT, 1978, J AM CHEM SOC, V100, P1872 TOMIOKA H, 1977, J AM CHEM SOC, V99, P6128 TOMIOKA H, 1979, J AM CHEM SOC, V101, P256 TOMIOKA H, 1979, J AM CHEM SOC, V101, P6009 TOMIOKA H, 1980, J AM CHEM SOC, V102, P7123 TOMIOKA H, 1980, J AM CHEM SOC, V102, P7817 TOMIOKA H, 1982, CHEM LETT, P843 TOMIOKA H, 1982, J AM CHEM SOC, V104, P3156 TOMIOKA H, 1983, J AM CHEM SOC, V105, P5053 TOMIOKA H, 1984, J AM CHEM SOC, V106, P454 TOMIOKA H, 1984, J CHEM SOC CHEM COMM, P476 TROZZOLO AM, 1973, CARBENES, V2, P185 TURRO NJ, 1982, J AM CHEM SOC, V104, P1754; NR: 23; TC: 8; J9: TETRAHEDRON LETT; PG: 4; GA: TL386Source type: Electronic(1
Solitons in Bragg gratings with saturable nonlinearities
No full textAuthor name used in this publication: P. K. A. Wai2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
Periodic waves in fiber Bragg gratings
No full textAuthor name used in this publication: P. K. A. Wai2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
Method Development and Validation for the Simultaneous Estimation of Esomeprazole and Levosulpiride by using RPHPLC in its bulk and pharmaceutical dosage form
No full textEsomeprazole is a compound that inhibits gastric acid secretion and is indicated in the treatment of gastroesophageal reflux disease (GERD), the healing of
erosive esophagitis, and H. pylori eradication to reduce the risk of duodenal ulcer recurrence. Esomeprazole belongs to a new class of antisecretory compounds, the substituted benzimidazoles, that do not exhibit anticholinergic or H2 histamine antagonistic properties, but that suppress gastric acid secretion by specific inhibition of the H+/K+ATPase at the secretory surface of the gastric parietal cell. By doing so, it inhibits acid secretion into the gsatric lumen. This effect is dose-related and leads to inhibition of both basal and stimulated acid secretion irrespective of the stimulus.
A simple, Accurate, precise method was developed for the simultaneous estimation of the esomeprazole and levosulpiride in Tablet dosage form.
Chromatogram was run through ODS (150mm 4.6mm, 5μ). Mobile phase containing Buffer and Acetonitrie in the ratio of 32;68A was pumped through column at a flow rate of 1ml/min. Buffer used in this method was 0.01N KH2PO4 pH 5.4 buffer.
Temperature was maintained at 30°C. Optimized wavelength for Esomeprazole and Levosulpiride was 290nm. Retention time of Esomeprazole and Levosulpiride were found to be 2.2min and 4.0min. %RSD of the Esomeprazole and Levosulpiride were
and found to be 0.97 and 0.50 respectively. %Recover was Obtained as 100.08% and 101.16% for Esomeprazole and Levosulpiride respectively. LOD, LOQ values are
obtained from regression equations of Esomeprazole and Levosulpiride were 0.10ppm, 0.34ppm and 1.04ppm, 0.29ppm respectively. Regression equation of Esomeprazole is y = 10568.x + 307.3, and of Levosulpiride is y = 11649.x + 1207
Friction studies in punch stretching of metal sheets.
No full textThis research involves theoretical and experimental studies of interfacial friction behavior of sheet metals under punch stretching conditions. The sheet materials of interest are (i) uncoated steel and (ii) electrogalvanized steel. These sheets were initially characterized by tensile tests conducted along various test directions and microscopy. A friction test was developed to measure the interfacial frictional resistance during the process of punch stretching of a channel section from these sheets. A new feature of this test is that sheets of varying widths (i.e. varying strain state) could be tested. Frictional resistance, expressed as a friction coefficient, for the purpose of simplicity and comparison with other work, was evaluated quasi statically, using two different interface conditions: dry and with mineral oil. Wider strip specimens showed higher measured values of friction (apparent) in comparison to narrow strips, particularly for the dry case. The observed dependence of friction coefficient was related to a variation in strain state of the deforming sheet, and was quantified by a simple two-dimensional model based on the deformational and frictional work along different directions of material motion over the punch surface. Scanning electron microscopy of the deformed sheet surface from the regions of punch contact revealed that the primary operating mechanism for the generation of resistance force was plowing of sheet surface by small asperities either on the punch surface or by debris particles. In addition, evidence of slight amount of plow stalling (or sticking) and asperity tearing was detected in the uncoated steel. In galvanized steel, a separate phenomenon was observed as a consequence of plowed zinc leading to gripping and stretching of these raised regions between the punch and the sheet. Based on the microscopic phenomena observed, a friction model was developed to estimate the resistance to surface deformation of sheet. Plowing and adhesion components were calculated individually, based on the assumptions of simple geometric configurations of asperity contact. Using the components calculated for idealized conditions and details of microscopic observations, a friction parameter is developed for dry contact of realistic surfaces, which agrees well with experimental results.PhDMaterials Science and EngineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/104703/1/9542957.pdfDescription of 9542957.pdf : Restricted to UM users only
Hydrogen bonding in alcohols: its effect on the carbene insertion reaction
No full textPT: J; CR: NRCC20486 PUBL BETHELL D, 1970, CHEM COMMUN, P792 CLOSS GL, 1976, J AM CHEM SOC, V98, P8190 COGGESHALL ND, 1951, J AM CHEM SOC, V73, P5414 EISENTHAL KB, 1980, J AM CHEM SOC, V102, P6563 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 GRILLER D, UNPUB JOESTEN MD, 1974, HYDROGEN BONDING, CH5 JONES M, 1973, CARBENES KERR JA, 1967, J CHEM SOC A, P897 KIRMSE W, 1964, CARBENE CHEM LANDECK H, 1977, J PHYS CHEM-US, V81, P718 LIU MTH, 1972, CAN J CHEM, V50, P3009 SCAIANO JC, 1980, J AM CHEM SOC, V102, P7747 SENTHILNATHAN VP, 1980, J AM CHEM SOC, V102, P7637 TURRO NJ, 1980, J AM CHEM SOC, V102, P7576 VALERO J, 1980, J CHIM PHYS PHYS CHI, V77, P65 WILSON GM, 1964, J AM CHEM SOC, V86, P127; NR: 18; TC: 95; J9: J AMER CHEM SOC; PG: 3; GA: PJ911Source type: Electronic(1
Compensating the Loss of Ecosystem Services Due to Pollution in Noyyal River Basin, Tamil Nadu
No full textThe loss of ecosystem services due to industrial pollution in the Noyyal River Basin was estimated through physical research studies of water and soil quality and bio-mapping followed by economic valuation. Estimates of the loss to the agriculture, drinking water, and fisheries sectors were made on an annual basis and also capitalized. Compensation was awarded by the Loss of Ecology Authority to the affected farmers to be paid by industry.ecosystem, industrial pollution, India
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