high temperature hot water generators
Báo cáo khoa học: Hyperthermophilic enzymes ) stability, activity and implementation strategies for high temperature applications pot
... yields when the reaction is per-formed at high temperatures; (e) the reactions kineticsare faster at high temperatures; (f) enzymatic process-ing at temperatures near or above 100 °C minimizesthe ... and stable at high temperatures, and adapted to low temperature environments. However, another theory suggests thathyperthermophiles arose from mesophiles via adapta-tion to high temperature ... mesophilic proteins at room temperature andincreases with temperature, so as to allow for enzy-matic activity near 100 °C. It is only upon achievingthese high temperatures that sufficient molecular...
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singhal, s. c. (2002). high temperature solid oxide fuel cells - funda
... existing electrical system: and 20 High Temperature Solid Oxide Fuel Cells: Fundamentals, Design and Applications U. B, Pal and S. C. Singhal, High Temperature Science, 27 (1990) ... conductivity of pure water and pure common salt is low but that of an aqueous salt solution is high. In a short time many of the mixed oxides which exhibit high conductivity at elevated temperatures, ... the complex materials and the high expansion coefficient. Of course the difficulties are greater because of the temperature of operation. Additional 22 High Temperature Solid Oxide Fuel...
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introduction to high-temperature superconductivity selected topics
... operating temperature exceeds acertain value. This temperature may be as low as 30 K for some materials and as high as 90K for others.8It is known from development of LTSC wires that high transport ... orintermediate (20–30 K) temperatures is worth considering. Conventional low -temperature superconductors are often used in magnets running at 4 K, but they lose their superconduc-tivity in high magnetic ... also superconducting. has slightly higherand than was used routinely in the inner core of composite magnets toachieve higher fields. has which is appreciably higher than the 18 K ofhas been...
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carbon nanotube array thermal interfaces for high temperature silicon carbide devices
... high- temperature, photoacousticINTRODUCTIONSilicon carbide (SiC) electronic devices hav e developed such that commercialproducts are now available. SiC is preferred in high- temperature, high- power, ... SiC devices at temperatures as high as 500–600C, while Si is generally limited to 125C.While the foregoing discussion highlights the advantage of SiC over Si for high- temperature applications, ... whichexhibited higher noise levels at elevated temperatures as indicated by the larger errorbars for higher temperatures in the graphical results that follow.Figure 2. Modified photoacoustic...
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Báo cáo hóa học: " Self-propagating high-temperature synthesis of nano-TiCx particles with different shapes by using carbon nano-tube as C source" doc
... TiB2powder by a self-propagating high- temperature synthesis technique. Mater Lett 2004, 58:733-738.13. Khanra AK, Pathak LC, Mishra SK, Godkhindi MM: Self-propagating -high- temperature synthesis (SHS) ... nano-size ZrB2powder by self-propagating high- temperature synthesis. J Eur Ceram Soc 2009,29:1501-1506.15. Nersisyan HH, Lee JH, Won CW: Self-propagating high- temperature synthesis of nano-sized ... combustion temperaturesare quite low. As another consequence of the high Cconcentration, the stoichiometry of these primitivelyformed TiCxparticles in the Fe melt is relatively high. Then,...
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Báo cáo hóa học: " Study of the formation processes of gold droplet arrays on Si substrates by high temperature anneals" docx
... of catalyticallyactive nanoislands for the growth of Si wire-like crystals.Fast anneals at high temperatures o f the structures ofSi substrates with gold films deposited on them both infurnace ... not observed at any rate upto the temperature of 950°C (see Figure 5). Instead, theindividual intergrain boundaries often form joints 120°jfor the mentioned temperatures, indicating a steady-state ... process.Increase in th e RTA temperature result ed in t he for-mation of gold nanoislands on the surface of Si wafers.Thesizeandthedensityofislandsweredeterminedbythe annealing temperature (Figures...
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Research for Agricultural Sciences:" Effect of high temperature fluidized drying and tempering on head rice yield and mechanical strength of Vietnamese rice varieties " doc
... low temperature drying at 35oC, the mechanical strength of the rice kernels was higher at high temperature drying (Table 2, Figure 8). This value was significantly higher at 90oC drying temperature ... drying process. High temperature (over 1000C) fluidized bed drying of paddy has been reported by a few researchers. But, normally it is recommended that hot air drying temperature should ... for 25-30 minutes if high temperature drying is used (Poomsa-ad et al. 2005; Prachayawarakorn et al. 2005). Although there are a few research works being reported on high temperature fluidized...
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Báo cáo hóa học: " High-Temperature Stable Operation of Nanoribbon Field-Effect Transistors" pot
... than that in method (1) at elevatedtemperatures of 125 and 150°C.ConclusionsIn summary, we report the constant temperature operationof nanoribbon FETs in the temperature range of 25–150°C.In ... field-effect transistors can be used for stable high- temperature applications. The on-current level of thenanoribbon FETs decreases at elevated temperatures due tothe degradation of the electron ... inresponse to temperature variations [10–13]. However, thereduction in mobility induced by the thermal scatteringcauses the operation points of the device to vary with the temperature. This temperature- dependent...
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Báo cáo hóa học: " Nanostructured Hypoeutectic Fe-B Alloy Prepared by a Self-propagating High Temperature Synthesis Combining a Rapid Cooling Technique" ppt
... ÁSelf-propagating high temperature synthesis (SHS) ÁSoft magnetic performance Á Mechanical behaviorIntroductionNanostructured materials have been shown to exhibit out-standing high strength and ... 4:11–16123NANO EXPRESSNanostructured Hypoeutectic Fe-B Alloy Prepared bya Self-propagating High Temperature Synthesis Combininga Rapid Cooling TechniqueLicai Fu Æ Jun Yang Æ Qinling Bi Æ ... synthesized bulk nano-structured Fe94.3B5.7alloy using the one-step approach of aself-propagating high temperature synthesis (SHS) com-bining a rapid cooling technique. This method isconvenient,...
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Báo cáo hóa học: " Self-assembled GaInNAs/GaAsN quantum dot lasers: solid source molecular beam epitaxy growth and high-temperature operation" pptx
... lm2)at10°C. High- temperature operationup to 65 °C was demonstrated from an unbondedGaInNAs QD laser (50 · 1,060 lm2), with high char-acteristic temperature of 79.4 K in the temperature range ... 1,700 lm2)at10°C. High- temperature operationup to 65 °C was successfully demonstrated from anunbonded GaInNAs QD laser (50 · 1,060 lm2), with high T0of 79.4 K in the temperature range of ... To the best of our knowledge, this is thehighest temperature GaInNAs QD laser operationever reported. Figure 11b shows the plot of ln(Ith)versus temperature (T) (left axis) and logarithm...
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Báo cáo khoa học: Sub-zero temperature inactivation of carboxypeptidase Y under high hydrostatic pressure pot
... regions of the water: the innermost (region A) water is highly immobilized, the second (region B) in whichthe water is less ice-like, and the third (region C) containsnormalwater.BecauseLi+and ... moleculesIt is suggested that water molecules tend to form highlyordered clusters with enhanced hydrogen bond interactionsunder cold temperature [19]. Formation of such water clusters causes weaker ... properties under the high pressure conditions, i.e. changes in solubility and criticalmicelle concentration (CMC), is desired.Effects of subzero temperature and high pressureon water moleculesIt...
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gas sensing properties of wo3 doped rutile tio2 thick film at high operating temperature
... surface. So, at high working temperature such as600 °C, there is large number of adsorbed oxygen ions at the sur-face. And it makes the high surface density of adsorbed oxygen ionsand high sensitivity ... TiO2sen-sors had a higher sensitivity to NO2than that of a pure TiO2sensor.Generally, the sensing film with a smaller grain size has a largersurface area of the sensing film and higher sensitivity ... There-fore, at 600 °C, the 15 wt.% WO3doped TiO2sensor had the highestsensitivity (145.4) due to its relatively small grain size.Due to its highest sensitivity to NO2, the 15 wt.% WO3dopedTiO2sensor...
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Báo cáo khoa học: A new sulfurtransferase from the hyperthermophilic bacterium Aquifex aeolicus Being single is not so simple when temperature gets high potx
... phenylthiohydantoin derivates wasdone by high- pressure liquid chromatography (Waters,Manchester, UK) monitored by a data and chromatogra-phy control station (Waters).Molecular mass determinationMALDI-MS ... ndTable 3. Temperature dependence of thiosulfate rhodanesesulfurtransferase and polysulfide sulfur rhodanese sulfurtransferaseactivities of Aq-477 from A. aeolicus. nd, no data. Temperature (°C)Thiosulfaterhodanesesulfurtransferaseactivity ... time-correlatedsingle-photon counting technique. The instrumentationsetup was essentially similar to those previously described[54,55] with modifications. Briefly, a time-correlated single-photon counting...
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- high temperature hot water
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- high temperature hot water boilers
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