02221nas a2200277   4500008004100000022001400041245010000055210006900155260010600224300001000330490000700340520121500347653002701562653002201589653002301611653001901634653002001653100001801673700002201691700001801713700002401731700002101755700001801776700001901794856013001813       2009                        eng d  a0968-089600aArthrobacter sp lipase immobilization for preparation of enantiopure masked beta-amino alcohols0 aArthrobacter sp lipase immobilization for preparation of enantio  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJAN  a29-340 v173 a<p>Recent reports on immobilization of lipase from Arthrobacter sp. (ABL, MTCC 5125; IIIM isolate) on insoluble polymers have shown altered properties including stability and enantioselectivity. Present work demonstrates a facile method for the preparation of enantiopure beta-amino alcohols by modulation of ABL enzyme properties via immobilization on insoluble as well as soluble supports using entrapment/covalent binding techniques. Efficacies of immobilized ABL on insoluble supports prepared from tetraethylorthosilicate/aminopropyltriethoxy silane and soluble supports derived from copolymerization of N-vinyl pyrrolidone-allylglycidyl ether (ANP type)/N-vinyl pyrrolidone-glycidyl methacrylate ( GNP type) for kinetic resolution of masked beta-amino alcohols have been studied vis-a-vis free ABL enzyme/wet cell biomass. The immobilized lipase on different insoluble/soluble supports has shown 21 - 110 mg/g protein binding and 30 - 700 U/g activity for hydrolyzing tributyrin substrate. The findings have shown a significant enhancement in enantioselectivity (ee 99%) vis-a-vis wet cell biomass providing ee 70-90% for resolution of beta-amino alcohols. (c) 2008 Elsevier Ltd. All rights reserved.</p>10aArthrobacter sp lipase10abeta-Aminoalcohol10aEnantioselectivity10aImmobilization10asoluble polymer1 aChaubey, Asha1 aParshad, Rajinder1 aGupta, Pankaj1 aTaneja, Subhash, C.1 aQazi, Ghulam, N.1 aRajan, C., R.1 aPonrathnam, S.  uhttps://library.ncl.res.in/content/arthrobacter-sp-lipase-immobilization-preparation-enantiopure-masked-beta-amino-alcohols-002476nas a2200277   4500008004100000022001400041245014700055210006900202260008600271300001200357490000700369520144100376653001401817653001801831653002001849653002601869653002201895653002001917100001901937700001901956700001701975700001901992700002902011700002902040856012902069       2015                        eng d  a1060-132500aAmbient temperature photocopolymerization of tetrahydrofurfuryl methacrylate and isobornyl methacrylate: reactivity ratios and thermal studies0 aAmbient temperature photocopolymerization of tetrahydrofurfuryl   a530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcDEC  a982-9910 v523 a<p>Photocopolymerization of heterocyclic monomer namely, tetrahydrofurfuryl methacrylate with bulky bicyclic monomer, isobornyl methacrylate with different feed ratios was carried out in bulk with low concentration of an -hydroxyl ketone based photoinitiator. The ambient temperature photocopolymerization was carried out by using a UV-Visible lamp with fixed low intensity of 0.4mW cm(-2) for a period of 6min. The residual monomer remained in the polymerization process were determined by using gas chromatography. The reactivity ratio values for the two monomers were calculated from the copolymer composition data by using Fineman-Ross, Kelen-Tudos, Extended Kelen-Tudos and Mao-Huglin methods. Individually, as well as the average of all the methods revealed that the monomer reactivity ratios of tetrahydrofurfuryl methacrylate were higher than isobornyl methacrylate. The dyad sequence distribution and dyad sequence lengths were calculated using the Igarashi and Pyun method and the sequence length distribution for tetrahydrofurfuryl methacrylate was observed to be higher with an increase in its feed content. This supports the reactivity ratio studies that a higher monomer reactivity ratio value for tetrahydrofurfuryl methacrylate was observed as compared to its comonomer. The thermal studies showed that the glass transition temperatures of the copolymers increased with an increase in isobornyl methacrylate content.</p>10aCopolymer10amethacrylates10amicro structure10aphotocopolymerization10areactivity ratios10athermal studies1 aRajdeo, K., S.1 aPonrathnam, S.1 aPardeshi, S.1 aChavan, Nayaku1 aBhongale, Sunil, Sitaram1 aHarikrishna, Reghunathan  uhttps://library.ncl.res.in/content/ambient-temperature-photocopolymerization-tetrahydrofurfuryl-methacrylate-and-isobornyl-001740nas a2200169   4500008004100000245008500041210006900126260000800195300001400203490000700217520115600224100001901380700001901399700001801418700001901436856011501455       2016                        eng d00aAdsorption of strontium (II) metal ions using phosphonate-functionalized polymer0 aAdsorption of strontium II metal ions using phosphonatefunctiona  cOCT  a1541-15560 v393 aDiethyl[3-(methoxydimethylsilyl)propyl]phosphonate (DMPP) polymer was synthesized for the strontium (II) metal ion recovery using diethylallylphosphonate as staring material. Diethylallylphosphonate was reacted with poly(methylhydro)siloxane (MW 1900-2000 g mol (-1) ) in the presence of Speier's catalyst. The synthesized monomer was characterized by IR, (1) H NMR, (1 3) C NMR and FT-IR spectroscopy techniques, and the synthesized polymers were characterized by IR and NMR spectroscopy, differential scanning calorimetry, thermogravimetric analysis and solubility. The synthesized polymer was used for sequestering strontium metal from the aqueous solution. The metal binding was examined by the energy dispersive spectroscopy and scanning electron microscopy for the adsorbed Sr(II). Batch adsorption studies were performed by varying three parameters, namely initial pH, adsorbent dose and the contact time. The reaction kinetics was determined by the Langmuir, Freundlich, and pseudo-first- and second-order models. Results of this study indicate that the synthesized polymer DMPP has been effective in removing Sr(II) from the aqueous solution.1 aBhosle, S., M.1 aPonrathnam, S.1 aTambe, S., S.1 aChavan, N., N.  uhttps://library.ncl.res.in/content/adsorption-strontium-ii-metal-ions-using-phosphonate-functionalized-polymer