effect of ph on absorption spectrum of sulfanilamide
Research report: "To study the effect of substituents on the properties of aniline by the method of approximate quantum AM1" pps
... A.; Serjeant, E. P. Ionization Constants of Acids and Bases; Methuen: London, 1962. [10] David R.Lide, CRC Handbook of Chemistry and Physics, 75 ed, CRC press, London (1994), 9-50. Tóm tắt ... Correlation of the pKa value with the Hammett σ constants of the substituents. Table 3 lists correlation coefficients between Hammett σ constants and bond length C-N, negative charge on atom ... electronic influences of substituents on chemical reactions and equilibria. Accordingly, it is reasonable to expect that they might also provide a reliable measure of the substituent’s effects on...
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Báo cáo khoa học: The effect of pH on the initial rate kinetics of the dimeric biliverdin-IXa reductase from the cyanobacterium Synechocystis PCC6803 pptx
... butkeeping the NADPH concentration constant at nonsat-urating (10 lm) and saturating (1 mm) levels of NADPH and varying the biliverdin concentration inthe range 0.5–10 lm. A concentration of 1 mm wasused ... of sBVR-A and to conductthese experiments under a range of conditions, includ-ing temperature, pH and the presence or absence of phosphate, because this has such a pronounced activat-ing effect ... be associated with anionizing residue that is involved in binding the 2Â-phos-phate of NADPH.The effect of pH on the initial rate kinetics is consis-tent with two ionizing groups in the enzyme...
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Báo cáo y học: "Effect of antibodies on the expression of Plasmodium falciparum circumsporozoite protein gene"
... antibody concentration. The number of mature liver schizonts increased up to 150% in the presence of mAbs anti-CSP of P. yoelii, which were suppressive at higher concentrations. Contradictory effects ... inhibitory effect [7]. The number of mature liver schizonts increased in the presence of mAbs anti-CSP of P. yoelii and the authors suggested that enhancement of infection could be a consequence of ... important role in the control of malaria infection. However, they can modulate parasite development enhancing infection. The effect of anti-Plasmodium antibodies on the expression of circumsporozoite...
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Tài liệu Báo cáo Y học: The effects of low pH on the properties of protochlorophyllide oxidoreductase and the organization of prolamellar bodies of maize (Zea mays) pot
... Magnification bar200 nm.Fig. 8. NADPH concentration dependence of the photoconversion of PChlide to Chlide of PLB suspended in pH 6.5 assay medium. (A)Changes in percentage photoconversion in response ... by measuring the NADPH dependence of the photo-conversion of PLB at pH 6.5. Plots of the extent of photoconversion in response to a single saturating flash, andto a series of such flashes separated ... form of a phosphorylated (or possibly adenylated) ternary complex of POR, its substrate PChlide, and NADPH. Dephospho-rylation of the photoconverted form of this complex by anendogenous phosphatase,...
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ẢNH HƯỞNG CỦA ĐỘ KIỀM LÊN QUÁ TRÌNH TĂNG TRƯỞNG CỦA TÔM THẺ CHÂN TRẮNG (Penaeus vannamei) ĐƯỢC NUÔI Ở ĐỘ MẶN THẤP (4‰) EFFECT OF ALKALINITY ON GROWTH PERFORMANCE OF WHITE LEG SHRIMP (Peneaus vannamei) CULTURED IN LOW SALINITY AREA (4‰)
... entitled Effect of alkalinity on growth performance of white leg shrimp (Peneaus vannamei) cultured in low salinity environment (4‰)” was carried out at hatchery lab’s Faculty of Fisheries, Nong ... fluctuated between 68.3 and 77.5%, food conversion rate was spent from 1.16 to1.50 and feed intake was consumed from 0.11 to 0.13 g/day. To conclude, concentration of alkalinity ranged from 40 to ... tra bằng khúc xạ kế. pH được đo bằng máy đo pH- 5011A. Hàm lượng ammonia tổng số được kiểm tra bằng test Sera Amonium / Ammoniak và độ kiềm được đo bằng test Sera KH. Trong suốt quá trình nuôi,...
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Báo cáo khoa học: Dissociation/association properties of a dodecameric cyclomaltodextrinase Effects of pH and salt concentration on the oligomeric state pot
... These data indicated that the effect of pH on dissociation of the oligomer was mainlydue to the protonation of a single residue rather than aglobal effect of pH on the protein. In agreement ... that the effect of salts on theoligomeric state of CDase I-5 correlated with thedissociation of the dodecameric form of the enzyme.In conclusion, dimerization or oligomerization is aphysical ... of cyclomaltodextrinaseI-5 (CDase I-5) as a function of pH and salt concentration, the dissoci-ation/association processes of the enzyme were investigated under various pH and salt conditions....
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The Effect of Aesthetic on the Usability of Data Visualization pdf
... task abandonment and latency of erroneous response. Our findings demonstrate a correlation between latency in task abandonment and erroneous response time in relation to visualization’s perceived ... "A Conceptual Model for Evaluating Aesthetic Effect within the User Experience of Information Visualization," in Tenth International Conference on Information Visualisation (IV'06) ... completion time measurements are well known in data visualization evaluations [11, 14]. Task abandonment is a metric of usability primarily 11th International Conference Information Visualization...
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Effects of ph on cd and zn uptake by plant
... accountsfor the effect of pH of exposure, 24% of thevariation was described. Adding the term whichaccounts for the effect of pH of acclimation de-scribed 36% of the variation in zinc uptake. Consid-ering ... the effect of the pH of acclimation (pH accl) described38% of the variation in cadmium uptake. Consid-ering only the results of the cadmium uptakeexperiments performed at the pH of acclimation(i.e. ... analy-sis of variance of the data showed that both the effect of the pH of exposure and the pH of acclimation on Cd uptake are highly significant(Table 2a).Fig. 3 shows the results of the effect of...
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Báo cáo "The dependence of the nonlinear absorption coefficient of strong electromagnetic waves caused by electrons confined in rectangular quantum wires on the temperature of the system" doc
... creation (annihilation) operator of an electron, qb+r (qbr) is the creation (annihilation) operator of a phonon for a state having wave vector qr, qCr is the electron-phonon interaction ... absorption coefficient of a strong EMW by confined electrons in RQW on the temperature T of the system. The problem is considered in two cases: electron-optical phonon scattering and electron-acoustic ... independent component of the phonon (electron) distribution function, ()kJx is Bessel function, the quantity δ is infinitesimal and appears due to the assumption of an adiabatic interaction of the...
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Báo cáo khoa học: Effect of heliquinomycin on the activity of human minichromosome maintenance 4/6/7 helicase pdf
... 3. Effect of heliquinomycin on the RNA priming activity of theDNA polymerase-a/primase complex. (A) Top: effect of increasingconcentrations of heliquinomycin (HQ) on the RNA priming action of ... 43(μM)HQ17-mer17-mer/M13Fig. 2. Effect of heliquinomycin on DNA helicase activity. (A) Top:effects of increasing concentrations of heliquinomycin (HQ) on theDNA helicase activities of the MCM4/6/7 complex ... of the values was plotted together witherror bars. (B) Effect of increasing concentrations of heliquinomycin on the DNA polymerization activity of the DNA polymerase-a/prim-ase. The reaction...
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báo cáo hóa học: "Effect of step-synchronized vibration stimulation of soles on gait in Parkinson''''s disease: a pilot study" doc
... enhanced feedback wassynchronized with the distribution of plantar pressuresduring the gait cycle phase. Therefore, the synchroniza-tion of vibration stimulation with the gait phase mayimprove timing ... AccessResearch Effect of step-synchronized vibration stimulation of soles on gait in Parkinson's disease: a pilot studyPeter Novak*1 and Vera Novak2Address: 1Department of Neurology, Boston ... clin-ical value of the S-VS.AbbreviationsPD Parkinson's diseaseS-VS step-synchronized vibration stimulationVD vibratory deviceCV coefficient of variationCoP center of pressureUPDRS...
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báo cáo hóa học: " The effect of consequent exposure of stress and dermal application of low doses of chlorpyrifos on the expression of glial fibrillary acidic protein in the hippocampus of adult mice" pptx
... The effect of consequent exposure of stress and dermal application of low doses of chlorpyrifos on theexpression of glial fibrillary acidic protein in the hippocampus of adultmice. Journa l of ... of Occupational Medicine and Toxicology 2011, 6:4http://www.occup-med.com/content/6/1/4Page 9 of 9 RESEARCH Open AccessThe effect of consequent exposure of stress anddermal application of ... Effect of concurrent application of heat, swim stress and repeated dermal application of chlorpyrifos on the hippocampal neurons in mice. Folia Neuropathol 2009, 47(1):60-68.9. Gordon CJ, Leon LR:...
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báo cáo hóa học:" Direct effects of caffeine on osteoblastic cells metabolism: the possible causal effect of caffeine on the formation of osteoporosis" doc
... werepurchased and diluted in phosphate buffered solution(Sigma, St. Louis, MO, USA). In the first part of this study,the effects of various concentrations of caffeine on bonecell activities were ... relaxation of smooth muscle [23]. The effects of coffee on bone metab-olism are still controversial, although several studies havesuggested that caffeine and/or heavy coffee consumptionare ... inflammation and systemic bone loss: a model forinflammation-induced bone disease. J Bone Miner Res 1993,8:625-634.33. Fuller K, Chambers TJ: Effect of arachidonic acid metabolites on bone resorption...
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Báo cáo hóa học: " Research Article On the Spectrum of Almost Periodic Solution of Second-Order Neutral Delay Differential Equations with Piecewise Constant of Argument" ppt
... Statement of Main TheoremWe begin this section with a definition of the solution of 1.1.Definition 2.1. A continuous function x : R → R is called a solution of 1.1 if the followingconditions are ... to a contradiction. The claim follows. 14 Advances in Difference Equations12 R. Yuan, On the spectrum of almost periodic solution of second-order differential equations withpiecewise constant ... Yuan, On the spectrum of almost periodic solution of second order scalar functional differentialequations with piecewise constant argument,” Journal of Mathematical Analysis and Applications,...
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Báo cáo hóa học: " A pH sensor based on electric properties of nanotubes on a glass substrate" pptx
... mm. As for controlling the solution pH, 10 micro L of the solution was suctioned using a pipette;then 10 micro L of the other pH solution was added. The pH of the suctioned solution was measured ... from –0.55 V to –0.15 V.Effects of the pH on Idswere measured dropping various pH of 10 mM phosphate buffer on the CNT device:20 micro L of the buffer was dropped on the CNT and theAg/AgCl ... CNT-FET device on the glasssubstrateWe also investigated the effect of pH on the SWCNT-FETdevice because aggregation of the aqueous SWCNT dis-persion is controllable by changing the pH. For thisexperiment,...
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