high pressure fair weather

... steady state studies of enzymatic reactions at high pressure: tests with aspartate transcarbamylase. Anal Biochem 187, 258–261. 51 Heremans K (1982) High pressure effects on proteins and other biomolecules. ... rich chemistry, temperature and high pressure prevailing around the deep-sea vents offer a plausible environment for the emergence of life [35]. High hydrostatic pressures (up to 200 MPa) were previously ... the hairpin ribo- zyme subjected to high hydrostatic pressures is com- pletely recovered upon returning to atmospheric pressure, indicating that the effects of pressure are fully reversible, as...

Ngày tải lên: 07/03/2014, 00:20

... during 5 min at 15 °C prior to the SANS experiments. High- pressure cell During the SANS experiments the protein solutions were contained in a high- pressure cell made of stainless steel with two 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 other biomolecules. ... & 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...

Ngày tải lên: 08/03/2014, 10:20

... the solution at the beginning indicating that P420 was not formed during the high- pressure stopped-flow experiment. The high- pressure stopped-flow apparatus used is inter- faced with the Aminco DW2 ... binding to heme and hemeproteins. 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 cm 3 ặmol )1 and seems to be in reasonable agreement with the value of the static high- pressure study. In contrast to substrate-free...

Ngày tải lên: 08/03/2014, 23:20

... ATP-G-actin [20]. High pressure apparatus High pressure devices used for this study consisted of a thermostated high pressure vessel equipped with sapphire windows and a pump capable of raising pressure ... then reached a plateau. On a f urther increase in pressure, it decreased gradually in a relatively lower pressure range and steeply in a higher pressure range. At 400 MPa it d ropped a lmost t ... complex into 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...

Ngày tải lên: 24/03/2014, 00:21

... 220 MPa or higher. It was conđrmed that the excitation spectra of BIPM and FITC do not change under these high pressures. Hydrogen±tritium exchange under high pressure Effects of high pressure ... interrela- tionship between these pressure- induced changes and enzyme activity is of concern. General features of pressure effects on protein and the lipid bilayer High hydrostatic pressure causes the dissociation ... more hydrophobic at pressures of up to 100 MPa and then hydrophilic at 100 M Pa or higher and FITC becomes hydrophilic with increasing pressure. To examine reversibility o f pressure- induced ¯uorescence changes,...

Ngày tải lên: 24/03/2014, 00:21

... 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 ... aminoacylation reaction of tRNA at high pressure remains unknown. Recently, we obtained new information about the con- formation of tRNA at elevated pressure [26]. It is known that high pressure lowers the ... nucleophilic attack (Fig. 10). The entire pro- cess is induced by high pressure and does not proceed without it. We showed that high pressure influences the conformation of tRNA because of rearrangements in...

Ngày tải lên: 30/03/2014, 10:20

... conventional pressuriser tested here can reach a high pressure, nearly 300 kPa (2256 mmHg), but due to cement leakage did not retain this pressure. The changes of pressures depend of how the pressurisers ... controlled and reduced cement leakage the 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 cementation pressures and slightly, although not statistically, higher peak pressures compared to the conventional pressuriser. The...

Ngày tải lên: 20/06/2014, 07:20

... CONCLUSIONS The goal of this study was to show the potential of using the sound produced by the impact of a high- pressure w aterjet to detect and classify bur ied landmines. Previous work had shown this possibility ... freedom in the placement and number of test shots used. The lance is connected through hoses to a high- pressure pump and reser- voir. A test shot is made every time the deminer presses the trigger. ... 1974 EURASIP Journal on Applied Signal Processing Nozzle Mic. Waterjet Borehole Mine Figure 1: A high- pressure waterjet rapidly bores a hole through the soil to strike a buried object. The impact...

Ngày tải lên: 23/06/2014, 01:20

... 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 k r , both modes of measurement led to a tight correlation between flow and pressure with regression coefficients r 2 higher than 0.95 (figure 2D). However, ... k r were always higher than those obtained by the dynamic mode (figures 1C and 2D). Moreover the discrepancy between the two modes in - creased with increasing k r . 4. DISCUSSION The high pressure...

Ngày tải lên: 08/08/2014, 14:21

Ngày tải lên: 08/08/2014, 23:22

Ngày tải lên: 20/10/2014, 17:16

... medication irrespective of high blood pressure. Furthermore, an effective blood pressure treatment and an ineffective blood pressure treatment, meaning high blood pressure despite the use of ... following classes 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 normal blood pressure under...

Ngày tải lên: 25/10/2012, 10:45

... 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, b f = breathing frequency; SD = standard deviation. Table 2. Blood gas levels, lung function parameters, mouth occlusion pressures,...

Ngày tải lên: 03/11/2012, 11:30

... LẬT SANG TRANG 6/2008 - Vietnamese Cao 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...

Ngày tải lên: 18/03/2013, 09:45

Ngày tải lên: 05/09/2013, 09:08

... SDS properties under the high pressure conditions, i.e. changes in solubility and critical micelle concentration (CMC), is desired. Effects of subzero temperature and high pressure on water molecules It ... FEBS 2002 Cold inactivation of CPY under high pressure (Eur. J. Biochem. 269) 4673 Effect of glycerol and sucrose upon cold inactivation of CPY under high pressure CPY was incubated at )10 °C for ... inactivation of CPY under high pressure Time-dependent recovery of CPY activity was observed after the release of pressure (Fig. 4). When CPY activity was Fig. 2. Kinetics of the pressure inactivation...

Ngày tải lên: 08/03/2014, 10:20

... rate of nanowires is always higher than the deposi- tion rate (2 A ˚ /s) in the interval of T from 460 to 590 °C, has a maximum around 550–580 °C and rapidly decreases at higher T due to adatom desorption ... Science 601 (2007) 4395–4401 Diffusion-controlled growth of semiconductor nanowires: Vapor pressure versus high vacuum deposition V.G. Dubrovskii a,b, * , N.V. Sibirev c , R.A. Suris a,b , G.E. Cirlin a,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...

Ngày tải lên: 16/03/2014, 15:32

Ngày tải lên: 08/08/2014, 15:22

Ngày tải lên: 11/08/2014, 05:21

Ngày tải lên: 11/08/2014, 14:21