high temperature hot water systems

Ngày tải lên: 01/08/2014, 20:21

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Ngày tải lên: 17/12/2013, 10:45

... 40 J 4 CO , a.u. 2 temperature, °C 1 2 cyclic scheme Fig. 5C 3 Fig. 5. Mimicking temperature compensation and temperature adaptation of photosynthesis in higher plants. (A) Photosynthetic flux ... often temperature- compensated photosynthetic activity, whereas in plants living at high temperatures photosynthesis is uncompensated with a typical bell- shaped form. Figure 5A shows the photosynthetic ... small variation in its photosynthetic response (temperature compensation). We have analyzed these temperature 0 10 20 30 40 50 60 0 102030405060 photosynthetic rate, mol m -2 s -1 leaf temperature, °C AC BD 0 0.5 1 1.5 2 2.5 10...

Ngày tải lên: 19/02/2014, 02:20

... yields when the reaction is per- formed at high temperatures; (e) the reactions kinetics are faster at high temperatures; (f) enzymatic process- ing at temperatures near or above 100 °C minimizes the ... and stable at high temperatures, and adapted to low temperature environments. However, another theory suggests that hyperthermophiles arose from mesophiles via adapta- tion to high temperature ... operate at high temperatures, a more straightforward approach may be to search the existing protein database for the appropriate hyper- thermophilic enzyme that normally functions at higher temperatures....

Ngày tải lên: 07/03/2014, 05:20

... communi- cation between surface waters and groundwater flow systems as exemplified by the Huron, Manistee and Kalamazoo watersheds. The groundwater As concentrations in each of the 4 watersheds are displayed ... H-2. The groundwaters show high Fe con- centrations and some of the lowest As/Fe values. Some of the soil waters and surface waters have As/Fe values 10 times as great as the groundwaters, and about ... discussion 4.1. General water chemistry Major element chemistry of waters from the Portage catchment [soil water (lysimeter), groundwater (well and piezometer), and surface water (Portage Creek...

Ngày tải lên: 15/03/2014, 23:48

... 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...

Ngày tải lên: 18/04/2014, 12:25

... operating temperature exceeds a certain value. This temperature may be as low as 30 K for some materials and as high as 90 K for others. 8 It is known from development of LTSC wires that high transport ... or intermediate (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 higher and than was used routinely in the inner core of composite magnets to achieve higher fields. has which is appreciably higher than the 18 K of has been...

Ngày tải lên: 24/04/2014, 17:13

... high- temperature, photoacoustic INTRODUCTION Silicon carbide (SiC) electronic devices hav e developed such that commercial products are now available. SiC is preferred in high- temperature, high- power, ... SiC devices at temperatures as high as 500–600  C, while Si is generally limited to 125  C. While the foregoing discussion highlights the advantage of SiC over Si for high- temperature applications, ... which exhibited higher noise levels at elevated temperatures as indicated by the larger error bars for higher temperatures in the graphical results that follow. Figure 2. Modified photoacoustic...

Ngày tải lên: 06/05/2014, 08:53

... Consequences of Large Industrial Cooling Water Systems 15 2 Biofouling in Cooling Water Intake Systems: Ecological Aspects 3 Biofouling in Industrial Cooling Water Systems Macrofoulants in industrial ... cooling water systems in large numbers. After passage through the industrial plant, the cooling water discharge often produces a thermal plume, in which the water may be 7–10°C higher than ... large industrial cooling water systems. Springer, New York, pp 183–226 Kinne O (1963) The effects of temperature and salinity on marine and brackish water animals. I Temperature Oceanogr Mar...

Ngày tải lên: 29/05/2014, 23:46

... TiB 2 powder 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 ZrB 2 powder 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 temperatures are quite low. As another consequence of the high C concentration, the stoichiometry of these primitively formed TiC x particles in the Fe melt is relatively high. Then,...

Ngày tải lên: 21/06/2014, 00:20

... of catalytically active nanoislands for the growth of Si wire-like crystals. Fast anneals at high temperatures o f the structures of Si substrates with gold films deposited on them both in furnace ... not observed at any rate up to the temperature of 950°C (see Figure 5). Instead, the individual intergrain boundaries often form joints 120°j for 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. Thesizeandthedensityofislandsweredeterminedby the annealing temperature (Figures...

Ngày tải lên: 21/06/2014, 05:20

... low temperature drying at 35 o C, the mechanical strength of the rice kernels was higher at high temperature drying (Table 2, Figure 8). This value was significantly higher at 90 o C drying temperature ... drying process. High temperature (over 100 0 C) 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...

Ngày tải lên: 21/06/2014, 06:20

... than that in method (1) at elevated temperatures of 125 and 150°C. Conclusions In summary, we report the constant temperature operation of 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 the nanoribbon FETs decreases at elevated temperatures due to the degradation of the electron ... in response to temperature variations [10–13]. However, the reduction in mobility induced by the thermal scattering causes the operation points of the device to vary with the temperature. This temperature- dependent...

Ngày tải lên: 21/06/2014, 08:20

... Á Self-propagating high temperature synthesis (SHS) Á Soft magnetic performance Á Mechanical behavior Introduction Nanostructured materials have been shown to exhibit out- standing high strength and ... 4:11–16 123 NANO EXPRESS Nanostructured Hypoeutectic Fe-B Alloy Prepared by a Self-propagating High Temperature Synthesis Combining a Rapid Cooling Technique Licai Fu Æ Jun Yang Æ Qinling Bi Æ ... synthesized bulk nano- structured Fe 94.3 B 5.7 alloy using the one-step approach of a self-propagating high temperature synthesis (SHS) com- bining a rapid cooling technique. This method is convenient,...

Ngày tải lên: 22/06/2014, 01:20

... channel model CM1. Through this analytical study, we have highlighted the fact that the LP-OFDM waveform has the capability to of- fer higher robustness, that is, larger noise margins, than the nonprecoded ... How- ever, even if a high range gain of about 15 dB has been in- trinsically obtained without channel coding by the addition of the LP component, the performance of the two systems will be closer ... pages doi:10.1155/2008/317257 Research Article Optimization of Linear Precoded OFDM for High- Data-Rate UWB Systems Antoine Stephan, Emeric Gu ´ eguen, Matthieu Crussi ` ere, Jean-Yves Baudais,...

Ngày tải lên: 22/06/2014, 06:20

... research and capacity building in quality assurance, postharvest management and high technology protected cropping systems MS2: FIRST SIX-MONTHLY REPORT 30 January 2006 ... greenhouses with hydroponic systems, the key research component of this project, should contribute to Vietnam’s ability to achieve their goals in production of safe and high quality vegetables in ... research and capacity building in quality assurance, postharvest management and high technology protected cropping systems. Vietnamese Institution Research Institute of Fruits and Vegetables...

Ngày tải lên: 22/06/2014, 12:20