02078nas a2200301   4500008004100000022001400041245004000055210004000095260007700135300001400212490000700226520119400233653000601427653003201433653003601465653001401501653002401515653002301539653001201562653001801574653001201592653002301604100002301627700001901650700001901669700001401688856007401702       2005                        eng d  a0930-751600aModeling of rotary desiccant wheels0 aModeling of rotary desiccant wheels  aPO BOX 10 11 61, D-69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcDEC  a1473-14790 v283 a<p>Rotary desiccant wheels are widely used in dehumidification and energy recovery applications. In this work, we have developed a 2D, steady state model of a rotary desiccant wheel. Mass and energy balance equations for the air streams and the desiccant wheels were developed. The hydraulic diameter and surface area for heat and mass transfer were calculated based on knowledge of the flute geometry. Appropriate correlations for the Sherwood number and Nusselt number were used to estimate heat and mass transfer coefficients. The model is capable of predicting steady state behavior of desiccant wheels having at the most three sections (process, purge, and regeneration). The mathematical model was validated using a real desiccant wheel, and the calculation results are in reasonable agreement with the experimental data. Based on this model, the temperature and humidity profiles in the wheel during both the dehumidification and the regeneration processes are analyzed. The simulated results were used to gain an insight into the operation of desiccant wheels. The model and the presented results will be useful for optimizing dehumidification and energy recovery applications.</p>10a110a4-benzodioxan-2-carboxylate10a4-benzodioxan-2-carboxylic acid10adoxazosin10aenantio selectivity10aenantiomeric ratio10aethyl 110aethyl acetate10aLipases10atransesterfication1 aHarshe, Yogesh, M.1 aUtikar, R., P.1 aRanade, V., V.1 aPahwa, D.  uhttps://library.ncl.res.in/content/modeling-rotary-desiccant-wheels-001787nas a2200313   4500008004100000022001400041245009100055210006900146260006900215300001000284490000700294520075800301653000601059653003201065653003601097653001401133653002401147653002301171653001201194653001801206653001201224653002301236100002501259700001301284700002301297700001201320700002601332856011501358       2005                        eng d  a1369-703X00aNovel enzymatic route for kinetic resolution of (+/-)1,4-benzodioxan-2-carboxylic acid0 aNovel enzymatic route for kinetic resolution of 14benzodioxan2ca  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcDEC  a66-710 v273 aEthyl 1,4-benzodioxan-2-carboxylate is used as an intermediate compound for the production of drug doxazosin mesylate. The title compound was kinetically resolved to get S-enantiomer of ethyl 1,4-benzodioxan 2-carboxylate in a simple lipase catalyzed transesterificafion reaction. Ethyl acetate was used as reaction medium as well as acyl donor. The influence of the enzyme source and time of reaction on the enantio selectivity of product were studied. Lipase from Candida antartica-B (Novozyme A/S) catalyzed transesterification reaction with good enantio selectivity towards S-enantiomer. The high enantiomeric ratio, E= 160, provided S-2 an acceptable chemical yield (50%) and enaritiomeric excess (>95%). (c) 2005 Elsevier B.V. All rights reserved.10a110a4-benzodioxan-2-carboxylate10a4-benzodioxan-2-carboxylic acid10adoxazosin10aenantio selectivity10aenantiomeric ratio10aethyl 110aethyl acetate10aLipases10atransesterfication1 aKasture, Sangita, M.1 aVarma, R1 aKalkote, Uttam, R.1 aNene, S1 aKulkarni, Bhaskar, D.  uhttps://library.ncl.res.in/content/novel-enzymatic-route-kinetic-resolution-14-benzodioxan-2-carboxylic-acid-001436nas a2200253   4500008004100000022001400041245013600055210006900191260006100260300001200321490000700333520051200340653000600852653003200858653003600890653001400926653002300940653001200963100001600975700002500991700001701016700002301033856012601056       2008                        eng d  a0959-399300aLipases catalyzed enantioselective hydrolysis of (R,S)-methyl 1,4-benzodioxan-2-carboxylate intermediate for (S)-doxazosin mesylate0 aLipases catalyzed enantioselective hydrolysis of RSmethyl 14benz  a233 SPRING STREET, NEW YORK, NY 10013 USAbSPRINGERcAPR  a577-5790 v243 a<p>(S)-1,4-benzodioxan-2-carboxylic acid-1 is used as starting compound for the production of the more effective (S) enantiomer of the drug doxazosin mesylate. The catalytic ability of some commercial lipases for preparations of (S) enantiomer of 1 from (+/-) methyl 1,4-benzodioxin-2-carboxylate-2 is reported. Lipases from bacterial sources were more successful in resolving the ester than those from the yeast lipases. About 85% enantiomerically pure ester was achieved by lipase from alcaligenes sp.</p>10a110a4-benzodioxan-2-carboxylate10a4-benzodioxan-2-carboxylic acid10adoxazosin10aEnantioselectivity10aLipases1 aVarma, Rita1 aKasture, Sangita, M.1 aNene, Sanjay1 aKalkote, Uttam, R.  uhttps://library.ncl.res.in/content/lipases-catalyzed-enantioselective-hydrolysis-rs-methyl-14-benzodioxan-2-carboxylate-0