using nature apos s catalysts in atom transfer radical polymerizations
Progress in Controlled Radical Polymerization: Mechanisms and Techniques pot
... was a sequel to the previous ACS Symposia held in San Francisco, California, in 1997, in New Orleans, Louisiana, in 1999, in Boston, Massachusetts, in 2002, in Washington, DC, in 2005 and in Philadelphia, ... at Southern Methodist University (Dallas, Texas, USA) as an assistant professor in 2005 and was promoted to associate professor in 2009 In 2012, Prof Sumerlin joined the Department of Chemistry ... kajiwara@nara-edu.ac.jp The initial steps of conventional radical polymerizations were investigated by both steady-state electron spin resonance (SS ESR) spectroscopy in combination with atom transfer radical polymerization...
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Tài liệu Dramatic Attenuation in Fiber Access Terminals at Low Temperatures doc
... attenuation issue since the ribbon strands are completely removed from the center tube for accessing individual fibers Rather, the issue appears to be isolated to specific types of loose tube fibers, depending ... help customers build reliable, high-performance networks with confidence By proactively addressing and solving potential problems such as these, ADC continues to reaffirm its role as the industry ... cutting tool to apply "ring cuts" to the buffer tubes that are expressed through the cabinet, the same end result is possible The ring cut is a radial cut through the sub-unit wall without removing...
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Tài liệu Báo cáo khoa học: High activity of human butyrylcholinesterase at low pH in the presence of excess butyrylthiocholine pptx
... excess-substrate effect In these cases, excess-substrate inhibition was switched into excess-substrate activation [10,35,36] Moreover, mutations in the p-cation-binding site of human and snake ... analysis Steady-state turnover of BTC with wild-type BuChE exhibits the phenomenon of excess substrate activation This is illustrated in Scheme This scheme is also suitable for excess substrate inhibition ... FontecillaCamps, J.C (2003) Crystal structure of recombinant human butyrylcholinesterase: new insights into the catalytic mechanisms of cholinesterases Proceedings of the XIth Cholinergic Mechanisms Symposium...
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Báo cáo khoa học: Unusual stability of human neuroglobin at low pH – molecular mechanisms and biological significance docx
... Ngb in dictating its biological function is of great interest, especially considering the possible implications of this protein in the pathophysiology of conditions involving cerebrovascular insults ... analyzing their exact masses by ESI-MS, using a Micro Q-TOF mass spectrometer (Micromass, Manchester, UK), and comparing these 7036 data with the masses calulated from the known amino acid sequence ... be the result of the need for globins from deepdiving animals to be resistant to unfolding and heme loss during sustained anaerobic ⁄ acidosis conditions resulting from prolonged dives Similarly,...
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Báo cáo khoa học: Different roles of two c-tubulin isotypes in the cytoskeleton of the Antarctic ciliate Euplotes focardii Remodelling of interaction surfaces may enhance microtubule nucleation at low temperature doc
... within the H2 helix, c-T2 possessed a striking substitution at position 72: glycine in place of the c-T1 ⁄ consensus arginine (Figs 2–4) The presence of glycine at this position in c-T2 has only ... residues replacing bulky and charged residues) is similar to those that transform mesophilic subtilisin-like proteases into cold-active variants [54] Similar trends in sequence substitutions ... micronucleus Discussion In the present study, we have shown that the psychrophilic ciliate E focardii possesses two c-tubulin genes Fig Spatial distribution of c-tubulins in Euplotes focardii cells Confocal...
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Changes in the Economic Value of Variable Generation at High Penetration Levels: A Pilot Case Study of California pot
... investment decisions, and uncertainty in future fuel and investment capital costs Similarly, the present analysis does not consider the investment cost in VG resources These costs and factors ... cases The costs and impacts that are not considered in this analysis include environmental impacts, transmission and distribution costs or benefits, effects related to the lumpiness and irreversibility ... transmission investments Of course, actual investment and policy 20 decisions might reasonably consider these and other elements as well In each of the scenarios considered in this analysis, one...
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Maximum reproductive rate of fish at low population sizes potx
... modelling of fisheries biomass dynamics by using Metropolis–Hastings within Gibbs sampling Appl Stat In press Myers, R.A 1997 Comment and reanalysis: paradigms for recruitment studies Can J Fish ... been discussed in terms of classical methods, the same result is arrived at using a formal Bayes analysis of incorporating prior information into the analysis of data (Searle et al 1992) Since ... patronus) Atlantic herring (Clupea harengus) Pacific sardine (Sardinops sagax) Spanish sardine (Sardina pilchardus) Sprat (Sprattus sprattus) Engraulidae Anchovy (Engraulis encrasicolus) Gold-spotted...
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TiO2nanotubes and CNT–TiO2hybrid materials for the photocatalytic oxidation ofpropene at low concentration
... materials [29], and investigates the beneficial role of CNTs in photocatalysis Experimental 2.1 Photocatalysts preparation The TiO2 nanotubes used in this work were synthesised via a sol–gel process using ... samples and reveals various crystal structures The observed diffractions in sample CNT–TiO2 are typical for the anatase phase, and their broadness suggests the presence of very small crystals ... analysis of the as-prepared samples revealed that the TiO2 coating on CNTs in the as-prepared samples was amorphous and thus required heat treatments (shown in Table 1) to induce crystallisation...
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Báo cáo Y học: Characterization of a partially folded intermediate of stem bromelain at low pH ppt
... of ANS was also used to study the acidunfolding of stem bromelain (Fig 6) The ANS ¯uorescence intensity increases constantly with decrease in pH and is maximum at pH 0.8 As shown in Fig 7, stem ... bromelain at pH 2.0 shows a marked increase in ANS ¯uorescence intensity as compared to the native protein at pH 7.0 or unfolded in the presence of M GdnHCl These observations suggest the presence ... Our studies on the acid-induced unfolding of stem bromelain reveal that stem bromelain exhibits unfolding behaviour characteristic of Type I proteins as classi®ed by Fink et al [45] Results of spectroscopic...
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Báo cáo khoa học: ATPase activity of RecD is essential for growth of the Antarctic Pseudomonas syringae Lz4W at low temperature potx
... assays were performed using 5¢ overhang duplex DNA substrates only DNA-binding assay The DNA-binding activity of RecD proteins was measured by EMSA, using single-stranded (25-mer) and doublestranded ... reported in this study were also expressed in CS1 cells Expression of the proteins was confirmed by western analyses using anti-RecD and anti-His serum (supplementary Fig S1 ) Mutant proteins were ... present study to dissect the biochemical activities of RecD The roles of these conserved residues have been assessed previously in other helicases by structural and functional analyses, including...
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Báo cáo khoa học: The histidine-phosphocarrier protein of Streptomyces coelicolor folds by a partially folded species at low pH ppt
... other proteins with no apparent relationship in function, such as ferredoxin and diphosphate kinase [15,16] HPr from S coelicolor contains 93 amino acid residues; it lacks cysteine and tyrosine, but ... the studies with this construction as its structure, as observed by NMR (unpublished results), is similar to that found in other members of the HPr family and the His6-tag is disordered in solution, ... Biosciences) system The yield was 25–30 mg of protein per litre of culture Protein was more than 99% pure as judged by SDS protein-denaturing gels Also, mass spectrometry analysis was carried out in...
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Báo cáo hóa học: " Catalytic ozone oxidation of benzene at low temperature over MnOx/Al-SBA-16 catalyst" pdf
... Aldrich, St Louis, MO, USA) as the Mn precursors was 15 wt.% The Mn-impregnated material was calcined at 550°C Al-SBA-16 catalysts synthesized using Mn nitrate and Mn acetate as the Mn precursors are ... benzene Experimental details Synthesis of MnOx/Al-SBA-16 catalysts The detailed procedure for the synthesis of mesoporous silica SBA-16 with cubic Im3m structure is described in the literature [11] ... Sigma, St Louis, MO, USA), was dissolved in an aqueous HCl solution, and tetraethyl orthosilicate [TEOS] (98%) was added at 35°C The solution was stirred for 15 by a magnetic stirrer at the same...
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Báo cáo hóa học: " A Versatile Route for the Synthesis of Nickel Oxide Nanostructures Without Organics at Low Temperature" doc
... °C This synthetic technique has the following advantages: firstly, it is a one-step synthesis approach, making it easy to control the growth kinetics Secondly, the synthesis needs no sophisticated ... Perkin–Elmer model LS55 at room temperature Results and Discussions For the micro-structural analysis, the as-synthesized samples were directly transferred to the FESEM chamber without disturbing ... hydroxide nanostructures including nanosheets and nanoflowers by a hydrothermal methods using NaOH as solvent This work has ruled out the role played by the solvents and organics in the structural evaluation...
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Báo cáo hóa học: " Research Article How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR Charlotte Hucher, Ghaya Rekaya-Ben Othman, and Jean-Claude Belfiore" potx
... Implementation constraints As in the adaptive AF strategy, it is the destination who has to select the best transmission scheme However, before considering the possible transmission schemes, it has to know ... direct link is used, symbols are sent over the source-destination link in a noncoded manner, at a rate of symb pcu (c) NLOS case: only nonline-of-sight (NLOS) link is used, in a first phase symbols ... outage Estimations of the source-relay links are not necessary as the relays decode the signals Thanks to these estimations, it can calculate the instantaneous capacities of all possible transmission...
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báo cáo khoa học: " Light has a specific role in modulating Arabidopsis gene expression at low temperature" potx
... × SSC for and spinned dry for 10 sec with microarray centrifuge The slides were scanned using ScanArray Express 5000 device (GSI Lumonics, USA) and the spot intensities were quantified using software ... Karpinski S, Mullineaux PM: Induction of ASCORBATE PEROXIDASE expression in wounded Arabidopsis leaves does not involve known woundsignalling pathways but is associated with changes in photosynthesis ... Escobar C, Karpinska B, Creissen G, Mullineaux PM: Photosynthetic electron transport regulates the expression of cytosolic ascorbate peroxidase genes in Arabidopsis during excess light stress Plant...
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báo cáo khoa học: " Spatial distribution of transcript changes in the maize primary root elongation zone at low water potential" docx
... protein was down-regulated by stress in C1 alone (Table 1) CIPK3 is a ser/thr protein kinase involved with calcium sensing in the ABA- and stress- responses of Arabidopsis [32], suggesting this ... activity increases [43] This suggests that the increased enzyme activity in region was due to post-transcriptional events Expansins are also associated with increased wall-loosening in water-stressed ... by stress in C1 SINAT5 expression is enhanced by auxin in root tips of Arabidopsis [38] and increased expression of SINAT5 protein in transgenic Arabidopsis promoted root elongation [39] Thus,...
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Báo cáo khoa học: "Hepatic Cobalt and Copper Levels in Lambs in Norway" docx
... manifest OWLD has mainly been seen in Norway in sheep grazing on cultivated pastures Our results not indicate that the type of pasture in uences the cobalt levels in the regions studied This finding ... mountain pastures than in those that had stayed on lowland pastures In our opinion this is an interesting observation Studies in a heavily copper loaded sheep flock in northern Nord-Trøndelag indicate ... human tissues as a basis of geomedical investigations Norw Acad Sci & Lett., Oslo 1996, p.125-132 Strøm T, Hansen S, Govasmark E, Steen A: Mineralinnholdet i planter og mineralforsyninga til...
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Báo cáo y học: " Wild-type and central DNA flap defective HIV-1 lentiviral vector genomes: intracellular visualization at ultrastructural resolution levels" doc
... hybridization signals does not discriminate between integrated proviruses and DNA circles, therefore intranuclear signals not all necessarily correspond to actively transcribed genomes At 48 hr posttransduction, ... no competing interests Authors' contributions NJA prepared the infected samples, participated in the design of the study, performed the statistical analysis, and drafted the manuscript SSB carried ... wild-type virus infection Reinsertion of the DNA Flap in HIV-1 vectors stimulated gene transfer efficiencies both in vivo and ex vivo in all tissue- and cell-types examined [5-14], thus making the...
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Báo cáo sinh học: "Genotype by environment interaction for adult body weights of shrimp Penaeus vannamei when grown at low and high densities" ppt
... densities, and that further research is required before proposing selective breeding at high densities This conclusion also derives from observations in this study: inasmuch as the present study ... (origin B) In both of these origins, grow-out density at stocking (1–2 g) was 5–8 shrimpÆmÀ2 Regardless of the same stocking densities, previous observations had indicated that growth in these ... across the two density classes (yjl or yih), the high density class (subscript ‘h’) and low density class (subscript ‘l’), between two shrimp i, nested in the high density environment and shrimp...
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