compensation slew rate and stability

... development stage and prior to commissioning The magnitude and type of test voltage varies with the rated voltage of a particular apparatus The standard methods of measurement of high-voltage and the basic ... fundamental ripple, and the precision and flexibility, though any stability of the voltage can only be achieved by suitable stabilizing devices Then voltage fluctuations and voltage stability may be ... concepts As such, an understanding of these methods leads to clearer understanding of the basis of insulation coordination Similarly, an understanding of the operation and application of metal oxide...

Ngày tải lên: 18/04/2014, 12:28

... effective in healing gum abscess and accelerated wound healing (20) Substances that increase electrical field, such as prostaglandin E2, enhance the wound healing rate and increase cell division (26-28) ... Popliteal and pedal pulses were absent bilaterally with poor capillary refill The left foot was red and inflamed up to and including the medial malleolus The lateral aspect of the great toe and second ... amputated His condition rapidly deteriorated and he developed necrotizing fasciitis and osteomyelitis Consequently, he had surgery removing tendons, skin and the capsular linings of joints from...

Ngày tải lên: 26/10/2012, 09:39

Ngày tải lên: 07/06/2013, 01:26

... 42 Change the view to RIGHT side view, and be sure that both gaps indicated by red circle are same distance The gaps between washer and eccentric; washer and arm Click , then open link.prt Click ... base_asm.asm Click , Enter the name of base_asm OK Click Then open base.prt and assemble it at default location by selecting 16 , and open bushing.prt Place the bushing at the most left hole in the ... assembly Edit -> Repeat etc , and open post.prt Place the post at the most left hole in the base – see Click figure below 18 Perform the Global Interference check and make sure there are NO interference...

Ngày tải lên: 19/01/2014, 05:20

... center of the zone and several secondary faults in the south The fault zone cuts through Proterozoic, Paleozoic and Mesozoic sedimentary and metamorphic rocks, also Paleozoic and Triassic granitoids ... of pebble, granule, sand and boulder in the low part, silt, clay mixed with some sand layers in the upper part The last one is composed of pebble, granule mixed with silt and clay Mechanism of ... steeper and dipping eastward; the second, located near the basin center, is gentler 77 and dipping westward Between these groups there is a brittle deformation zone which is subsided and covered...

Ngày tải lên: 13/02/2014, 12:20

... occurrence of a b-strand is corroborated by the absence of backbone HN–HN NOEs Mapping chemical shift changes upon substrate binding Binding of substrates to nPS was studied by both NMR and X-ray crystallography ... density maps and facilitate further rebuilding and improvement of the molecular model, until no unexplained electron density remained, and the Rcryst and Rfree values converged at 18.9% and 24.4%, ... Protein–ligand and water-mediated protein–ligand hydrogen bond interactions (broken lines) that stablize the pantoate molecules in site I and site II of nPS Oxygen atoms of pantoate and water...

Ngày tải lên: 16/02/2014, 09:20

... of Val82 and Tyr85 in the turn (Val82-Asn83Gly84-Tyr85) between the S3 and S4 strands and the hydrophobic side chains of Pro34 and Leu38 N1 and N6 of the base of A20 lie close to Nd2 and Od1 of ... H18 and the X-loop of P horikoshii ArgRS and T thermophilus ArgRS Asn498, Phe499 and Glu500 in P horikoshii ArgRS and Ser464, Phe465 and Glu466 in T thermophilus ArgRS are shown in ball -and- stick ... Arg and the main chain C@O of Ser127 and ˚ O of the side chain of Asn129 are set at 3.15 A and ˚ , and the distances between the guanidinium 3.04 A moiety and the side chain of Glu124 (S5) and...

Ngày tải lên: 18/02/2014, 11:20

... Korea), mgÆkg)1 intravenously, and maintained with enflurane and oxygen During surgery, the jaw reflex, ocular reflex, heart rate (using electrocardiogram) and respiratory rate (using capnography) were ... ALLN and TRAIL increased caspase-8 activation and JNK phosphorylation However, both caspase-8 activation and JNK 7380 phosphorylation were inhibited under hypoxic conditions (Fig 6B) MTP and ROS ... degeneration and cell death of primary cultured chondrocytes In particular, we focused on the role of proteasome inhibition and TRAIL in osteoarthritic disease and chondrocyte apoptosis, and the hypoxic...

Ngày tải lên: 18/02/2014, 14:20

... rate constants are similar between NP and MP and 2248 between HP and HPO in accordance with the similar shapes and sizes between NP and MP and between HP and HPO The different Kd values are proportional ... 29.7 and 0.3, 19.8 and 0.2, 9.9 and 0.1 lM, respectively Data 4, 5, 6, 9, 10, and 12 were obtained with DHMP as the substrate The initial DHMP concentrations for these data were 10, 20, and 30 ... oxidized form of HP These measured rate constants are reliable and accurate, because of (a) the high quality of the stopped-flow data as illustrated in Figs and and (b) the consistency between the...

Ngày tải lên: 19/02/2014, 00:20

... The inhibitors NaF and NaH2PO4ÆH2O were added in concentrations in the range 0–80 mm and 0–50 mm, respectively, and the reactions were initiated by adding together the substrate and the inhibitor ... peptide and protein substrates This enzyme contains two zinc ions in its active site and was shown to be activated by calcium ions [39,40] High-resolution crystal structures of SGAP and complexes ... bonds with the substrate carbonyl oxygen and thus can stabilize the interaction between this oxygen atom and one of the zinc ions in the active site (Fig 1) [2,14,27,42] SGAP and AAP were shown...

Ngày tải lên: 19/02/2014, 02:20

... monochromator, and Glan-Thompson polarizers using quartz cuvettes with continuous stirring of the suspension, bandwidths of nm for excitation and nm for emission, and excitation and emission wavelengths ... potential and volume homeostasis of mitochondria Cell 91, 627–637 27 Haugland RP (1996) Handbook of Fluorescent Probes and Research Chemicals, 6th edn Molecular Probes, Inc, Eugene, OR 28 Chandra ... membrane binding and subsequent pore formation, destabilization and disruption of the membrane, leading to cell death Results We have previously reported the interaction of both VtA3 and VtB with...

Ngày tải lên: 19/02/2014, 07:20

... codon TAA, respectively The PCR product was digested with KpnI and SalI, and separated on a 1% agarose gel The desired band was eluted, and ligated into the pBluescript II SK(–) vector, then digested ... elongation with wild-type and mutant UPP synthases, LL, LLL, F223H, and LLLH, using E,E-FPP (left panel) of GPP (right panel) as allylic substrates Spots of authentic standard prenyl alcohols are ... of the highly conserved Phe73 and Ser74 in region III of M luteus B-P 26 UPP synthase into Ala resulted in 32- and 16-fold increases in Km value for IPP, and 16- and 12-fold decreases in kcat...

Ngày tải lên: 19/02/2014, 07:20

... enzyme producing lmol NADHÆmin)1 under the assay conditions Citrate synthase and methylcitrate synthase Citrate synthase and methylcitrate synthase activity was determined as described previously ... dithiothreitol, 0.5 U MDH, 0.5 U citrate synthase, 0.1 U ACS and 50–100 lL diluted medium All components were added with the exception of MDH and citrate synthase and the resulting absorbance at ... values with acetate as substrate: Vmax ¼ 22 mUÆmg protein)1 and Km ¼ 880 lM (Vmax/Km ¼ 25 UÆg)1ÆmM)1) and with propionate as substrate: Vmax ¼ 31 mU mg protein)1 and Km ¼ 90 lM (Vmax/Km ¼ 344...

Ngày tải lên: 19/02/2014, 16:20

... kinetic parameters of wild-type and W402F IPU for panose, mixtures consisting of lgÆmL)1 enzyme and from 43 to 216 mM substrate, and 20 lgÆmL)1 enzyme and 64 to 480 mM substrate, respectively, were ... reducing end side of these substrates (Fig 5B) The activities of IPU for 32 mM of IMTG, panose and MM were assayed, and mg of the enzyme liberated 18.5, 14.0 and 7.37 lmolÆ min)1 of glucose, ... panose, IMTG and MM were measured as follows A reaction mixture consisting of a desired substrate (32 mM) and IPU in 40 mM acetate buffer (pH 3.5) was incubated at 40 °C for 30 min, and the reaction...

Ngày tải lên: 19/02/2014, 16:20

... KSH and kf(H) correspond to KD and kf for the reaction of nondeuterated substrate, and KSD, kf(D) and kr(D) are equal, respectively, to KD, kf and kr for the reaction of deuterated substrate ... L-methionine and a-deuterated L-methionine in D2O the kr values are very small, and could be determined only with high experimental errors In the limits of these errors, the rates for the normal and deuterated ... inactivate the enzyme, and then evaporated to dryness, and the residue was recrystallized from water/ethanol to obtain pure a-deuterated L-Phe The procedure for preparation of a-deuterated L-Met was...

Ngày tải lên: 19/02/2014, 16:20

... MPO, LPO and their intermediates The absorption spectrum of MPO is characterized by an intense Soret peak at kmax ¼ 430 nm and weaker bands at 570, 620 and 690 nm, whereas at 370 nm and 496 nm, ... rapidly inactivates LPO and generates Cpd III (with bands at 424, 550 and 588 nm) (Table 2) In contrast to MPO, LPO Cpd III spectral pattern is clearly distinct from that of Cpd II and can be easily ... orders of magnitude slower than the former and generates superoxide This radical can either reduce Cpd II to the resting enzyme or Cpd I to Cpd II and generate dioxygen [18,22] several authors to...

Ngày tải lên: 20/02/2014, 02:21

... Results and discussion The monomeric derivatives of BS-RNase employed in this study, illustrated in Table 1, were prepared following established procedures [12] for the derivatization of Cys31 and ... CRI [16] We tested MCA and MAE with increasing concentrations of CRI and found that they were inhibited by approximately 90% with a 24 molar excess of CRI Monomers MSSAE and MSSG could not be ... their mixed disuldes This in turn generates, from either MSSAE or MSSG, M(SH)2 monomers, i.e BS-RNase monomers with exposed sulfhydryls at Cys31 and Cys32, and free thioethylamine or glutathione,...

Ngày tải lên: 20/02/2014, 11:20

... different infusion rates of NADH and different stirring rates, corresponding to different oxygen transfer constants, to compare the rates of inactivation of the enzyme during oscillatory and nonoscillatory ... approach would be to analyse the rates for the formation and decomposition of superoxide in the system Superoxide is formed via reaction and decomposed via reactions and The rate of formation depends ... concentrations of compound II and the aromate The consumption of Per3+ occurs via reactions 2, 6, and 10 The rates of reactions and should be smaller during oscillations, while the rate of reaction 10...

Ngày tải lên: 20/02/2014, 11:20

... (AUH) and rat liver arginase (1rla) H, S, T and stands for a-helix, strand, turn and 310-helix Conserved residues are marked by an asterisk Identical behaviour was previously described, and confirmed ... ACCTATGCG-3¢) and the 3¢ complementary primer 5¢-AT TAATGGCATGCTTTACCCGT-3¢ Using the PCR products of agmatinase with the GfiA and CfiT substitutions in the coding and noncoding strands, respectively, and ... aligned with the sequences of 1CEV and 1RLA and pasted into the structural alignment The alignment was then corrected by hand Since the sequences of the two arginases and agmatinase greately differ...

Ngày tải lên: 21/02/2014, 01:21

... motifs A and B of subdomain 1c, and C and D of domain (Fig 1, red) are involved in dsDNA binding [25] It was suggested that the dsDNAÆprotein contacts traverse the whole of domain 1, and that ... of these residues (e.g Lys238 and Lys240 for T7 DNA ligase or Lys186 and Lys188 for Chlorella virus ligase) belong to motif D This motif connects domains and 2, and serves as a ÔhingeÕ during ... Biotechnology Centers In the Netherlands (ABON) (Project I.2.8) and by the Netherlands Research Council for Chemical Sciences (CW) with financial aid from the Netherlands Technology Foundation (STW)...

Ngày tải lên: 21/02/2014, 01:21