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By Banerjee

In the substrate configuration the stainless steel carrier is coated with a Ag-ZnO bilayer in order to enhance the back reflection of the back contact see Figure 73 [11]. An increase in 7sc of about 50% was achieved by Banerjee and Guha [589] by using a textured Ag-ZnO bilayer, which further enhances the optical path length and consequently the absorption. As at this stage no [Pg.172]

This work was extended to include the lead tetraacetate oxidation of methyl esters of meta- and para-substituted mandelic acids183,184 shown in equation 121. A kinetic study by Banerjee and collaborators showed the kinetic dependence on the ester concentration changed from second order in 1% (v/v) acetic acid in benzene to first order when the solvent contained more than 10% (v/v) acetic acid. These workers observed a significant decrease in AH (from 82.9 to 53.6 kcalmol-1) and in AS (from —5.84 to —35.6 e.u.) when the solvent composition was changed from 1% acetic acid to greater than or equal to 10% acetic acid in benzene. [Pg.833]

Obviously, the spectra are more sharply defined than at 20°C. They are quite stable over several hours. Difference spectra have been recorded in 40% methanol between pH 2.0 and 10.6 at -20°C and are shown in Fig. 5. There is a real peak at 298 nm between pH 4.7 and 6.1, which could correspond to carboxyl group ionization. The amplitude AOD = ODj94 - OD291 is pH dependent and the profile of substrate binding in 40% methanol at -20°C shows maximum binding at about pH 4.7, which compares well to results obtained in water by Banerjee and Rupley (1973). Thus, difference spectra obtained on mixing lysozyme and hexa-NAG in mixed solvents at room as well as at subzero tempera-... [Pg.264]

For the sake of completeness, we recall that the idea of the single-root formalism exploiting the Hilbert space approach was also proposed by Banerjee and Simons [31] and Laidig and Bartlett [34,35]. In both approaches they start from the complete active space MC SCF wave function, however, in order to eliminate redundant cluster amplitudes they approximate the wave operator by... [Pg.86]

Other recent reports of the use of Mossbauer in the characterization of iron-containing zeolites involve the study of coordination complexes synthesized in zeolites. One such study carried out by Lunsford and coworkers (12) involved the study of tris(2,2 bipyridine) iron(II) complexes In zeolite Y. These materials were reacted with chlorine gas in order to oxidize the iron. Another study done by Banerjee (13) involved the Mossbauer analysis of lron(II)phenanthrollne complexes sorbed on zeolite 3A. These are most of the Mossbauer studies of iron-containing zeolites that we have found, although some earlier work has not been Included since reviews (14) are available. [Pg.303]

This chapter does not aim to give a complete treatise on the extensive literature on nitrile bioconversions, but rather aims at presenting an overview of enzymatic nitrile hydrolysis with a selection of recent and significant examples. Several reviews on the bioconversions of organic nitriles and their potential technological applications have been published namely by Banerjee et al. (2002), Mylerova and Martinkova (2003), Martinkova and Kren (2002). [Pg.360]

Tittmann), dihydrofolate reductase (Ch. 17 by Benkovic and Hammes-Schiffer), hydrolases (Ch. 18 by Stein), and vitamin Bj2 enzymes (Ch. 19 by Banerjee, Truhlar, Dybala-Defratyka, and Paneth). The volume is the closed by a one-chapter Part V on proton conduction in biology, in which Gutman and Nachliel (Ch. 20) treat the subject of proton conductance at protein surfaces and interfacial regions. [Pg.1606]

Regarding archaeological amber from Romanian teriitoiy, it was basically unstudied since we started our research project in 2007. Some studies by Nikolaus Boroffka on prehistoric amber (Boroffka, 2006) refer to chemical analyses of amber with an assumed Romanian origin in another paper, Boroffka (2001) discusses the results published by Banerjee (Banerjee et al. 1999) for two prehistoric beads from Romania, both considered of Baltic origin. [Pg.354]

En route to the synthesis of mensacarcin (104), a polyfunctionalized hexahy-droanthracene, showing cytostatic and cytotoxic activity, Tietze et al. [49] devised a Mizoroki-Heck cyclization for the formation of the tricyclic core. Several substrates with different protecting groups and substitution patterns were tested, out of which 102 turned out to be the best, affording 103 in 94% yield under optimized reaction conditions (102 103, Scheme 5.20). A similar strategy was pursued by Banerjee and coworkers [50] for the synthesis of tetrahydroanthracenes leading to umbrosone (107). Variation of the substituents in 105 had a minor effect, the reactions proceeded smoothly in 84-86% yield (105 106), and subsequent elimination of H2O provided the tetrahydroanthracene core. When diene 108 was employed the aromatic system in 109 was directly installed by double-bond migration (108 109). [Pg.192]

To obtain satisfying results for the solubility of alkanes the following empirical relation was suggested by Banerjee [61] for the temperature range 273-373 K ... [Pg.310]

The BEM forms part of a group of integral methods [131-142] that have been used sporadically for the simulation of electrochemically related problems. The BEM was described by Banerjee and coworkers and Brebbia and coworkers and has been outlined by them and others in detail in a number of engineering texts [6, 143-146]. A wide range of engineering-related problems have been tackled using the BEM including heat transfer, fluid mechanics, and structural analysis. [Pg.677]

Scheme 2.10 Synthetic scheme for the preparation of PAEs by -CFa-activated bishalo monomers, performed by Banerjee and group. Scheme 2.10 Synthetic scheme for the preparation of PAEs by -CFa-activated bishalo monomers, performed by Banerjee and group.
Banerjee et al, also prepared several diamine monomers [74-76] (3-20, 3-21, 3-22 in Table 3,3) with high FFV that were used for gas separation, and studied properties such as gas permeation and gas selectivities for several gas pairs, Banerjee et al, prepared high-Tg polymers by incorporating imido aryl [77] moiety (3-23 in Table 3,3) and further studied the gas separation properties, A fluorinated diamine monomer with anthracene moiety [78] (3-24 in Table 3,3) was also synthesized by Banerjee et al, the resulting polymers had high Tg values in the range 256-330 °C,... [Pg.108]

It is worth noting the Tg values of fluorinated polyimides (3-76 to 3-80 in Table 3.4) prepared by Banerjee et al. using different fluorinated diamines with ODPA as the dianhydride unit [119]. The following order of Tg is shown in Pig. 3.2 ... [Pg.123]


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See also in sourсe #XX -- [ Pg.29 , Pg.174 ]




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