ester synthesis by catalytic distillation
Báo cáo hóa học: " A Temperature Window for the Synthesis of Single-Walled Carbon Nanotubes by Catalytic Chemical Vapor Deposition of CH4 over Mo2-Fe10/MgO Catalyst" pptx
Ngày tải lên :
22/06/2014, 00:20
... a few SWCNTs are shown in the results and are coated by plenty of amorphous carbons Conclusions A temperature window of SWCNTs growth by catalytic chemical vapor deposition of CH4 over Mo-Fe/MgO ... was cooled to room temperature in an Ar flow The impurities were removed by concentrate HCI The Raman spectra were recorded by a Renishaw inVia spectrophotometer at room temperature and in a backscattering ... increasing rapidly with increasing growth temperature The TEM images show that SWCNTs are coated by more and more amorphous carbons, and when the temperature increases to 950 °C, SWCNTs are hardly...
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Tài liệu Báo cáo khoa học: Kinetics of dextran-independent a-(1 fi 3)-glucan synthesis by Streptococcus sobrinus glucosyltransferase I pdf
Ngày tải lên :
14/02/2014, 22:20
... on the synthesis of insoluble glucan and glucosyl transfer activity by GS and GSGB (A) Dextran-dependent insoluble glucan synthesis The insoluble glucan synthesis reaction was initiated by adding ... values are corroborated by our previous report [14] Time course of dextran-independent glucan synthesis We examined the kinetics of insoluble glucan synthesis from sucrose by GS and GSGB in the ... leucrose and nigerooligosaccharide were detected by TLC, and their concentrations were determined by HPLC Simulation of the glucan synthesis reaction The synthesis of insoluble glucan was numerically...
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Tài liệu Báo cáo khoa học: Enzymatic and electron paramagnetic resonance studies of anabolic pyruvate synthesis by pyruvate: ferredoxin oxidoreductase from Hydrogenobacter thermophilus doc
Ngày tải lên :
16/02/2014, 09:20
... the reductive carboxylation by electron paramagnetic resonance (EPR) spectroscopy to clarify its catalytic mechanism Results In vitro assay for pyruvate synthesis by POR: the coupled assay with ... pyruvate using ferredoxin reduced by CO dehydrogenase [23]; Chlorobium tepidum POR has been shown to catalyze pyruvate synthesis mediated by ferredoxin reduced by the light-driven reactions of ... Pyruvate synthesis by pyruvate oxidoreductase T Ikeda et al Discussion In the present study, we demonstrate that H thermophilus POR catalyzes pyruvate synthesis from acetylCoA and CO2, by the coupled...
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Tài liệu Báo cáo khoa học: Interferon-a induces sensitization of cells to inhibition of protein synthesis by tumour necrosis factor-related apoptosis-inducing ligand ppt
Ngày tải lên :
19/02/2014, 06:20
... of protein synthesis by IFNa and TRAIL Results Effects of IFNa treatment on the sensitivity of cells to inhibition of protein synthesis by TRAIL We have previously shown that protein synthesis ... 2006 FEBS I W Jeffrey et al Control of protein synthesis by IFNa and TRAIL Table Requirement for caspase-8 for inhibition of protein synthesis by TRAIL Wild-type and caspase-8-deficient Jurkat ... polypeptide chain initiation by TRAIL precedes apoptosis by several hours The requirement for caspase-8 activity in MCF-7 cells, as revealed by the inhibitor studies, is confirmed by the inability of caspase-8-deficient...
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Tài liệu Báo cáo khoa học: Stimulation of poly(A) synthesis by Escherichia coli poly(A)polymerase I is correlated with Hfq binding to poly(A) tails ppt
Ngày tải lên :
19/02/2014, 16:20
... we show that formation of a Hfq–poly(A) complex which activates poly(A) synthesis by PAP I, inhibits poly(A) synthesis by PNPase, suggesting that the two enzymes interact differently with 3¢ ... binding to RNA stimulates elongation by PAP I A B Fig Hfq stimulates addition of A residues by PAP I but not of C residues (A) Addition of various residues by PAP I 5¢ end labeled p-3¢rpsO mRNA ... rectangles locate Hfq binding sites determined by enzymatic and chemical probing and by mutational analysis Grey rectangle locates the Hfq binding site determined by gel retardation assay Grey curves locate...
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Báo cáo khoa học: Iron regulatory protein-independent regulation of ferritin synthesis by nitrogen monoxide pot
Ngày tải lên :
07/03/2014, 12:20
... activated by lipopolysaccharide (LPS) and interferon-c (IFNc), a condition known to induce NO synthesis [36], exhibit NO-dependent IRP2 degradation accompanied by an increase in ferritin synthesis ... immunoprecipitated (by using anti-ferritin IgG) and analyzed by SDS ⁄ PAGE followed by autoradiography iron which could be responsible for the SNP-mediated induction of ferritin synthesis To so, ... ferritin synthesis in both SNP and IFNc ⁄ LPS-treated macrophages In this report, we show that SNP enhances ferritin synthesis not only by the mechanism involving IRP2 degradation, but also by an...
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Báo cáo khoa học: Induction of PPARb and prostacyclin (PGI2) synthesis by Raf signaling: failure of PGI2 to activate PPARb potx
Ngày tải lên :
07/03/2014, 12:20
... transcriptional activity was affected neither by Raf induction of PGI2 synthesis in the absence of PPARb activation the pharmacological inhibition of PGI2 synthesis nor by the simultaneous overexpression ... blocked by the PGIS inhibitor U51605 [27] (Fig 5B) U51605 also further reduced the low level of PGI2 synthesis in the absence of AA by about threefold (Fig 5B) Thus, the extent of PGI2 synthesis ... completely blocked by the Cox-1 ⁄ inhibitor acetylsalicylic acid (ASA) and the Cox-2 inhibitor SC-58125 (Fig 1B), pointing to a key role for Cox-2 in the induction of prostanoid synthesis by Raf In contrast...
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Báo cáo khoa học: Characterization of the tRNA and ribosome-dependent pppGpp-synthesis by recombinant stringent factor from Escherichia coli pot
Ngày tải lên :
07/03/2014, 16:20
... agreement with the results presented by Wendrich et al [7] tRNA and ribosome-dependent synthesis by stringent factor the tRNA saturation curves might be affected by the amount of SF present in the ... ribosome-dependent synthesis by stringent factor purity of ribosomes was checked by denaturing gels containing m urea and the activity of ribosomes was tested in poly(Phe) synthesis assays according ... was contaminated by low molecular mass proteins (Fig 1, compare lanes 5– 7) SF was further purified by precipitation [3] Several low molecular mass contaminants were removed by this procedure...
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Báo cáo Y học: Concerted regulation of free arachidonic acid and hormone-induced steroid synthesis by acyl-CoA thioesterases and acyl-CoA synthetases in adrenal cells pdf
Ngày tải lên :
08/03/2014, 09:20
... could act by sequestering free AA by esterification into AA-CoA CoA-esterified AA may bind ACBP/DBI thus forming an intracellular pool that could then be delivered to an acyl-CoA thioesterase, ... most mammalian cells esterified to phospholipids Free cytosolic AA can be produced by the action of phospholipase A2 or cholesterol esterase which release the fatty acid by cleavage from membrane ... be esterified into AA-CoA As already mentioned, AA could derive from plasma membrane phospholipids or from cholesterol esters The major source of cholesterol in the rat adrenal is the cholesterol...
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Báo cáo khoa học: Efficient ATP synthesis by thermophilic Bacillus FoF1-ATP synthase ppt
Ngày tải lên :
22/03/2014, 16:20
... abolished ATP synthesis 10 10 100 1000 0.05 0.1 TFoF1/lipids (w/w) 10 s Fig ATP synthesis by TFo FeDc or TFo FWT reconstituted in lipo1 somes The ATP synthesis reaction was initiated by injection ... ATP synthesis by the F0F1-ATPase from the thermophilic Bacillus PS3 co-reconstituted with bacteriorhodopsin into liposomes Evidence for stimulation of ATP synthesis by ATP bound to a noncatalytic ... proteoliposomes was estimated by dynamic light scattering (HB-550; Horiba, Kyoto, Japan) to be 170 nm (Fig 2) ATP synthesis assay and data analysis ATP synthesis by TFoF1 was monitored with a...
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Báo cáo khoa học: Signalling and regulation of collagen I synthesis by ET-1 and TGF-b1 doc
Ngày tải lên :
23/03/2014, 11:20
... cultures stimulated by 180 pm TGF-b1 [41,42] were included in all subsequent analyses Induction of collagen I by TGF-b1 and by ET-1 was perceptible by coomassie staining as well as by immunoblotting ... pepsin, TCA-precipitated and separated by 6% SDS ⁄ PAGE (A) PLCb inhibition by U73122 (10 lM) (B) PC-PLC inhibition by D609 (185 lM) (C) PLD inhibition by neomycin (500 lM) Two specific collagen ... cellular DAG concentrations derived from 4,5-bis-phosphate (PIP2) by PIP2-PLC-b [24] and phosphatidylcholine (PC) by PLD [33–35] or by PC-PLC activation [34–36] To better understand the molecular...
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Báo cáo khoa học: Regulation of maize lysine metabolism and endosperm protein synthesis by opaque and floury mutations potx
Ngày tải lên :
23/03/2014, 15:21
... treatments Genotypes Oh43 + Enzyme AK Control (SD) % inhibition by + % inhibition by + % inhibition by + HSDH Control (SD) % inhibition by + LOR (SD) SDH (SD) LOR/SDH ratio a mM L mM T mM LT mM T ... previously described by Landry et al [32] Quantitation of N constituents For an accurate quantitation, the nonprotein nitrogen (NPN) and protein content were determined by the ninhydrin assay ... 340 nm in a final volume of 1.1 mL at 30 °C as described by Azevedo et al [11] The effect of threonine on the HSDH activity was determined by the addition (10 mL of a M solution) of the amino acid...
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Báo cáo khoa học: De novo RNA synthesis by a recombinant classical swine fever virus RNA-dependent RNA polymerase pot
Ngày tải lên :
30/03/2014, 20:20
... viral RNA synthesis de novo in the absence of primers and viral or Ó FEBS 2003 De novo RNA synthesis by CSFV RdRp (Eur J Biochem 270) 4957 Fig De novo initiation of viral RNA synthesis by classical ... (protein-primed) to initiate RNA synthesis [33] Phage Qb initiated de novo RNA synthesis [34], whereas rabbit hemorrhagic disease virus (RHDV) initiated RNA synthesis by using a template-primed copy-back ... to alanine, was carried out by overlapping PCR The N terminal 1370 bp fragment was amplified by NS5BFor and NS5Bm2, and the C terminal 780 bp fragment was amplified by NS5Bm1 and NS5BRev Then,...
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Báo cáo y học: "Platelet-derived growth factor and transforming growth factor beta synergistically potentiate inflammatory mediator synthesis by fibroblast-like synoviocytes" potx
Ngày tải lên :
12/08/2014, 12:20
... secretion by FLS We describe significant potentiation by PDGF and TGF-β of the production of certain cytokines, chemokines, and matrix metalloproteinases (MMP) by FLS This synergy was mediated by tyrosine-kinase ... analyzed by oneway ANOVA followed by Tukey-Kramer's post-hoc test comparing all groups, or by Dunnett's post-hoc test comparing control to all others, as appropriate Time course data were analyzed by ... prostaglandin E2 production, while inhibiting collagenase synthesis [11] Also, PDGF was shown to induce synthesis of IL8 and MIP1α, along with IL1β, by FLS [12], and also to synergize with TNFα to stimulate...
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Báo cáo y học: " Cyclic hydrostatic pressure and cotton particles stimulate synthesis by human lung macrophages of cytokines in vitro" ppsx
Ngày tải lên :
12/08/2014, 14:20
... involved in recognition of dsRNA by the host has been a major area of focus by many researchers Le Goffic et al demonstrated that sensing of influenza A virus by TLR3 and RIG-I regulates a pro-inflammatory ... (Sigma, MO) The nebulized methacholine was administered for minutes, followed by a 5-minute data collection period, followed by a 10minute rest period before subsequent increasing-dose methacholine ... lung function measurements, mice were sacrificed by CO2 asphyxiation and the lungs were cannulated Bronchoalveolar lavages (BAL) were performed by injecting mL of PBS into the lungs and retrieving...
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Báo cáo y học: " Cyclic hydrostatic pressure and cotton particles stimulate synthesis by human lung macrophages of cytokines in vitro" pptx
Ngày tải lên :
12/08/2014, 14:20
... publication by Garcia et al [9] described how physical forces affected the function and phenotype of cells in the lung This review described the stimulation of cytokine synthesis by strain, by macrophages ... as box whisker cytokines by pressure andline (a-c) Effect ofBAL macrophages; data on synthesis of and (a-c) Effect of pressure and particles on synthesis of cytokines by BAL macrophages; data ... http://respiratory-research.com/content/10/1/44 Figure Synthesis of Cytokines by Lung Surgery Macrophages 3a TNFĮ Synthesis (pg/ml) After Exposure to 3psi Pressure (n=6) 3c IL-1ȕ Synthesis (pg/ml) After Exposure to...
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Desalination by membrane distillation fabrication of high performance membranes
Ngày tải lên :
04/10/2015, 10:24
... capacity percentage of desalination plants worldwide by 1998 [13] Multi-Effect Vapor Distillation Com pression Electrodialysis 4% 4% 6% Multi-Stage Distillation 44% Reverse Osm osis 42% Fig.1.4 Schematic ... [12] 1.4 Introduction to Membrane Distillation as an alternative desalination approach For the first time, membrane distillation was introduced through a US patent by Bodel in 1966 [16] In this process, ... 1.1 Introduction As time goes by, the fresh water shortage becomes a more troublesome issue for human being According to the Global Environmental Outlook report by United Nations in 2000, water...
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Polystyrene (PS) waste plastic conversion into aviation /kerosene category of fuel by using fractional column distillation process
Ngày tải lên :
05/09/2013, 15:28
... liquefaction and 2nd temperature profile for fractional distillation column Collected fuel density is 0.89 g/ml and fuel was analysis by GC/MS, FT-IR and DSC By using GC/MS analysis result showed aromatic ... and butane either alkane or alkene group gas Light fraction gas was cleaned by alkali wash and transfer into Teflon bag by using small pump This light gas could be use as PS waste plastic to kerosene ... reactor covered with fractional distillation column tower and setup was proper tighten For PS liquefaction temperature was setup 100400 ºC and temperature controlled by Watlow controller Start temperature...
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Tài liệu Báo cáo khoa học: Reversible tetramerization of human TK1 to the high catalytic efficient form is induced by pyrophosphate, in addition to tripolyphosphates, or high enzyme concentration ppt
Ngày tải lên :
18/02/2014, 12:20
... DE-81 filters by shaking for 30 in 0.2 m KCl ⁄ 0.1 m HCl, after which the radioactivity was determined by scintillation counting Analysis of kinetic data Kinetic data were fitted by non-linear ... TK1 activity coincides with an increase in the DNA synthesis rate and dNTP pools [10] TK1 is degraded to undetectable levels during mitosis by means of the anaphase-promoting complex APC ⁄ C-Cdh1, ... NaP (Fig 4D), did the enzyme exhibit low catalytic efficiency like non-incubated TK1 (Fig 3D), i.e with apparent negative co-operativity as indicated by concave Hofstee plots of v versus v ⁄ s...
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Tài liệu Báo cáo khoa học: Modulation of the enzymatic efficiency of ferredoxin-NADP(H) reductase by the amino acid volume around the catalytic site pptx
Ngày tải lên :
18/02/2014, 17:20
... introduced by the mutations was determined following the standard radii and volumes calculated by Tsai et al [32] b DDGMUT ⁄ WT indicates the energy barrier introduced by the mutations to the catalytic ... volume change introduced by the mutation in position 266 and the decrease in enzyme catalytic efficiency Remarkably, the value for the catalytic efficiency previously obtained by replacement of the ... change of the R amino acid groups introduced by mutations was determined following the standard radii and volumes calculated by Tsai et al [32] b Determined by fluorescence spectroscopy using oxidized...
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