high pressure fair weather
Báo cáo khoa học: Adenine, a hairpin ribozyme cofactor – high-pressure and competition studies potx
... steady state studies of enzymatic reactions at high pressure: tests with aspartate transcarbamylase. AnalBiochem 187, 258–261.51 Heremans K (1982) High pressure effects on proteinsand other biomolecules. ... rich chemistry, temperatureand high pressure prevailing around the deep-sea ventsoffer a plausible environment for the emergence of life[35]. High hydrostatic pressures (up to 200 MPa) werepreviously ... the hairpin ribo-zyme subjected to high hydrostatic pressures is com-pletely recovered upon returning to atmospheric pressure, indicating that the effects of pressure arefully reversible, as...
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Báo cáo khoa học: High-pressure effects on horse heart metmyoglobin studied by small-angle neutron scattering pdf
... during 5 min at 15 °C prior to the SANSexperiments. High- pressure cellDuring the SANS experiments the protein solutions werecontained in a high- pressure cell made of stainless steel withtwo parallel ... Frank, J., Masson, P. & Balny, C.(1996) High- pressure effects on protein structure and function.Proteins 24, 81–91.5. Heremans, K. (1982) High- pressure effects on proteins and otherbiomolecules. ... & Drickamer, H.G. (1983) The effect of high pressure upon proteins and other biomolecules. Quart. Rev. Biophys. 16,89–112.7. Weber, G. (1987) In High Pressure Chemistry and Biochemistry(van...
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Báo cáo Y học: Substrates modulate the rate-determining step for CO binding in cytochrome P450cam (CYP101) A high-pressure stopped-flow study pdf
... thesolution at the beginning indicating that P420 was notformed during the high- pressure stopped-flow experiment.The high- pressure stopped-flow apparatus used is inter-faced with the Aminco DW2 ... binding to heme andhemeproteins. High- pressure study. J. Am. Chem. Soc. 112, 6880–6886.13. Unno, M., Ishimori, K., Ishimura, Y. & Morishima, I. (1994) High- pressure flash photolysis study ... obtained from the plot of ln(w/(1 ) w))vs. pressure is approximately +11 cm3ặmol)1and seems tobe in reasonable agreement with the value of the static high- pressure study.In contrast to substrate-free...
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Báo cáo Y học: Fluorescence study of the high pressure-induced denaturation of skeletal muscle actin pdf
... ATP-G-actin [20]. High pressure apparatus High pressure devices used for this study consisted of athermostated high pressure vessel equipped with sapphirewindows and a pump capable of raising pressure ... then reached a plateau.On a f urther increase in pressure, it decreased gradually in arelatively lower pressure range and steeply in a higher pressure range. At 400 MPa it d ropped a lmost t ... complexinto actin and HMM did not occur under high pressure. Keywords: a ctin; denaturation; dissociation; ¯uorescence;heavy meromyosin; high pressure. Actin, the major protein in muscle, is...
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Báo cáo Y học: High pressure-induced changes of biological membrane Study on the membrane-bound Na+/K+-ATPase as a model system pdf
... 220 MPa or higher. It wasconđrmed that the excitation spectra of BIPM and FITC donot change under these high pressures.Hydrogen±tritium exchange under high pressure Effects of high pressure ... interrela-tionship between these pressure- induced changes andenzyme activity is of concern.General features of pressure effects on proteinand the lipid bilayer High hydrostatic pressure causes the dissociation ... morehydrophobic at pressures of up to 100 MPa and thenhydrophilic at 100 M Pa or higher and FITC becomeshydrophilic with increasing pressure. To examine reversibility o f pressure- induced ¯uorescencechanges,...
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Báo cáo khoa học: Charging of tRNA with non-natural amino acids at high pressure potx
... used a high- pressure technique. High pressure is currently used in many areas of bio-technology. Its mechanism of action includes the deci-sive role of water structure [26,27]. High pressure ... aminoacylationreaction of tRNA at high pressure remains unknown.Recently, we obtained new information about the con-formation of tRNA at elevated pressure [26]. It isknown that high pressure lowers the ... nucleophilic attack (Fig. 10). The entire pro-cess is induced by high pressure and does not proceedwithout it. We showed that high pressure influencesthe conformation of tRNA because of rearrangementsin...
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báo cáo hóa học:" Modified femoral pressuriser generates a longer lasting high pressure during cement pressurisation" pot
... conventional pressuriser tested here can reach a high pressure, nearly 300 kPa (2256 mmHg), but due tocement leakage did not retain this pressure. The changesof pressures depend of how the pressurisers ... controlled and reduced cement leakagethe pressure drops more gradually allowing the high pres-sure to be retained for longer. The time with high cemen-tation pressure (250 kPa) was about twice that ... showed significantly and substantially longer durations at higher cementationpressures and slightly, although not statistically, higher peak pressures compared to the conventional pressuriser.The...
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Báo cáo hóa học: " Landmine Detection and Discrimination Using High-Pressure Waterjets" potx
... CONCLUSIONSThe goal of this study was to show the potential of using thesound produced by the impact of a high- pressure w aterjetto detect and classify bur ied landmines. Previous work hadshown this possibility ... freedomin the placement and number of test shots used. The lance isconnected through hoses to a high- pressure pump and reser-voir. A test shot is made every time the deminer presses thetrigger. ... 1974 EURASIP Journal on Applied Signal ProcessingNozzleMic.WaterjetBoreholeMineFigure 1: A high- pressure waterjet rapidly bores a hole through thesoil to strike a buried object. The impact...
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Báo cáo khoa học: "Hydraulic conductance of root and shoot measured with the transient and dynamic modes of the high-pressure flowmete" ppsx
... pressurisation of root systems [6],the root pressure probe [18], the potometer [29], the neg-ative pressure flow system for root sections [14], the high pressure flowmeter (HPFM) [25, 27]. Each ... [27]. For larger root systems and higher kr, bothmodes of measurement led to a tight correlation betweenflow and pressure with regression coefficients r2higherthan 0.95 (figure 2D). However, ... krwere always higher than thoseobtained by the dynamic mode (figures 1C and 2D).Moreover the discrepancy between the two modes in-creased with increasing kr.4. DISCUSSIONThe high pressure...
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Báo cáo y học: " High blood pressure, antihypertensive medication and lung function in a general adult population"
... medication irrespective of high blood pressure. Furthermore, an effective blood pressure treatment and anineffective blood pressure treatment, meaning high blood pressure despite the use of ... followingclasses of high blood pressure based on the blood pressure measurement (HBP ≥ 140/90 mmHg) and antihyperten-sive medication were defined:- A. HBP: high blood pressure regardless of ... development of high blood pressure [7-9,26]. Besides, one has to con-sider the possible effect of long-standing high blood pressure. For example, subjects with currently normalblood pressure under...
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Báo cáo y học: " High-intensity non-invasive positive pressure ventilation for stable hypercapnic COPD
... in the Declaration of Helsinki. High- intensity NPPV All patients were hospitalized to establish high- intensity NPPV. The assist/control mode is used for high- intensity NPPV, preferably in ... tolerate high- intensity NPPV would result in better outcomes. Therefore, prospective trials also assessing the number of patients not tolerating high- intensity NPPV are required. Thirdly, high- intensity ... positive airway pressure, EPAP = expiratory airway pressure, bf = breathing frequency; SD = standard deviation. Table 2. Blood gas levels, lung function parameters, mouth occlusion pressures,...
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Cao huyết áp - High Blood Pressure
... LẬT SANG TRANG6/2008 - VietnameseCao huyết áp (Tăng huyết áp)- High Blood Pressure Cao huyết áp (còn được gọi là tăng huyết áp) là một bệnh nghiêm trọng ảnh hưởng...
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Báo cáo khoa học: Sub-zero temperature inactivation of carboxypeptidase Y under high hydrostatic pressure pot
... SDS properties under the high pressure conditions, i.e. changes in solubility and criticalmicelle concentration (CMC), is desired.Effects of subzero temperature and high pressure on water moleculesIt ... FEBS 2002 Cold inactivation of CPY under high pressure (Eur. J. Biochem. 269) 4673 Effect of glycerol and sucrose upon cold inactivationof CPY under high pressure CPY was incubated at )10 °C for ... inactivation of CPYunder high pressure Time-dependent recovery of CPY activity was observedafter the release of pressure (Fig. 4). When CPY activity wasFig. 2. Kinetics of the pressure inactivation...
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Diffusion controlled growth of semiconductor nanowires vapor pressure versus high vacuum deposition
... rate of nanowires is always higher than the deposi-tion rate (2 A˚/s) in the interval of T from 460 to 590 °C, hasa maximum around 550–580 °C and rapidly decreases athigher T due to adatom desorption ... Science 601 (2007) 4395–4401 Diffusion-controlled growth of semiconductor nanowires:Vapor pressure versus high vacuum depositionV.G. Dubrovskiia,b,*, N.V. Sibirevc, R.A. Surisa,b, G.E. Cirlina,b,c,J.C. ... wire length on the drop density, surface temperature and deposition flux during vapor pressure deposition and high vacuum deposition are analyzed and the differences between these two growth techniques...
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