single cylinder high temperature tests
lubrication fundamentals
... technology As equipment is designed to achieve higher production levels, this will result in higher operating speeds, increased temperatures and higher system pressures that will place greater ... measure of the rate change of viscosity with temperature The higher the VI, the lower is the rate of change with changes in temperature XHQ Extrahigh quality base stocks produced by hydrocracking ... improvers are long chain, high molecular weight polymers that function by causing the relative viscosity of an oil to increase more at high temperatures than at low temperatures Generally this...
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Báo cáo y học: "Low temperature tolerance of human embryonic stem cells"
... survived exposure to low temperature for extended durations Spontaneous differentiation of hESC after exposure to low temperature Following serial passage after exposure to low temperature, the proportion ... indistinguishable from non -temperature exposed hESC (data not shown) Chromosomal Analysis of hESC after exposure to low temperature Metaphase spreads of hESC following lowtemperature exposure were ... rate of hESC after exposure to low temperature (4oC and 25oC) for extended durations (24h and 48h) It was assumed that hESC not proliferate upon exposure to low temperature This assumption is based...
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Tài liệu Báo cáo khoa học: A systems biology approach for the analysis of carbohydrate dynamics during acclimation to low temperature in Arabidopsis thaliana doc
... al ¨ temperature (LT50) values of both accessions were significantly different at all time points during acclimation, confirming that Rsch is more tolerant to freezing than C24, and has a higher ... for vInv (Fig 3A) and SPS (Fig 3D) Whereas SPS activities were consistently higher in Rsch, C24 showed significantly higher activities of vInv at 0, and days of cold exposure The activity of vInv ... exposure, and became significantly higher than in C24 after days at °C As compared with that of vInv, the activities of nInv and eInv were low, and became noticeably higher only in Rsch after days...
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Báo cáo khoa học: Different roles of two c-tubulin isotypes in the cytoskeleton of the Antarctic ciliate Euplotes focardii Remodelling of interaction surfaces may enhance microtubule nucleation at low temperature doc
... environmental temperature both in vitro and in vivo [16,17] The ab-tubulin dimers of mammals, for example, form microtubules in vitro at temperatures near 37 °C, and these polymers dissociate at low temperature ... moderate temperature The sequences of the nucleotide-binding T3 and T5 loops of c-T1 and c-T2 were highly conserved across all Euplotes species; the former perfectly, whereas the latter contained a single ... nucleation at cold temperatures reflects evolved molecular alterations to its interaction surfaces Psychrophilic ciliated protozoa are uniquely suited to an investigation of this issue As single cells,...
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hybrid metal oxide and multiwall carbon nanotube films for low temperature gas sensing
... room temperature A similar responsiveness value was obtained when the sensors were operated at 150 ◦ C Actually, Table shows that sensitivity is higher when these sensors are operated at room temperature ... metal oxidebased sensors at low operating temperatures In particular, micro-sensors based on SnO2 /MWCNTs hybrid films operated at room temperature showed the higher sensitivity towards NO2 in the ... responsiveness: (a) NO2 detection at room temperature; (b) NO2 detection at 150 ◦ C; (c) CO detection at 150 ◦ C Fig Response of a sensor type B operated at room temperature after exposure to increasing...
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low temperature hydrothermal synthesis of monodispersed flower - like titanate nanosheets
... irradiated by a 450 W high- pressure Hg lamp (Ushio UM-452) and cooling water was circulated through a cylindrical Pyrex jacket located around the UV light source to maintain the reaction temperature The ... ambient temperature under stirring condition The solution was mixed until a white precipitate appeared The suspension was aged in a static condition for 24 h in a closed container at room temperature ... were obtained after 24-h The high magnification SEM image (Fig 2b) shows that the surface of these spheres is relatively smooth with size of 250 to 450 nm Fig shows the high magnification SEM images...
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low-temperature h2s sensors based on ag-doped fe2o3 nanoparticles
... operating temperature may be due to the difficulty in exothermic gas adsorption at higher temperature [33] Therefore, the maximum response can just be observed at the right operating temperature ... calcination temperature from 200 to 400 ◦ C, and the Ag/␣-Fe2 O3 sensor calcined at 400 ◦ C has the highest response, being in good agreement with the TG-DTA results that 400 ◦ C is the temperature ... when the calcination temperature is higher than 400 ◦ C, which may be due to an increase in Fig Responses to 100 ppm H2 S of wt% Ag-doped ␣-Fe2 O3 calcined at different temperatures 187 Fig Responses...
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wo3 thin film sensor prepared by sol–gel technique and its low-temperature sensing properties to trimethylamine
... TMA, the optimum of the operating temperature is 70◦ C To 700 and 1000 ppm TMA, the gas sensitivity reaches almost the highest value at 70◦ C When the operating temperature is in the range of 70–85◦ ... sensitivity of the sensor is affected by the operating temperature Fig shows the relationship between the gas sensitivity and the operating temperature of WO3 thin film sensor to TMA gas with various ... and annealed at different temperatures for 10 h The XRD pattern of the thin film annealed at 150◦ C does not show any definite structure So the sample annealed at this temperature was in the amorphous...
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Báo cáo khoa học: ATPase activity of RecD is essential for growth of the Antarctic Pseudomonas syringae Lz4W at low temperature potx
... activity at lower temperatures to a considerable extent Nonetheless, the method is robust enough to measure heli- R419A 10 20 30 Incubation time (min) E633Q case activity at higher temperatures (25–37 ... bacterium Pseudomonas syringae Lz4W at low temperature [15] The peizophilic bacterium Photobacterium profundum also required RecD function during growth under high pressure [16] These two studies suggested ... In vitro activities of RecD at various temperatures We reported previously that the defect in the P syringae recD mutant CS1, which does not grow at low temperature (4 °C), is complemented by...
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Carbon supports for low temperature fuel cell catalysts
... catalyst support for low -temperature fuel cells The high crystallinity of CNTs make these materials highly conductive, the high surface area and high amount of mesopores result in a high metal dispersion ... Mesoporous 0.3 Â 10À2–1.4 High metal dispersion High gas flow Low metal accessibility [81,82,87,89–91] Carbon gels 400–900 Mesoporous >1 High metal dispersion High gas flow High metal accessibility ... OMCs with very high dispersion, as the particle size was estimated under nm despite high metal loading of 60 wt% In single DMFC test, the OMC supported Pt catalysts exhibited much higher performance...
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morphology control of zno bilayer structure by low-temperature
... secondary nucleation and growth occur in this reaction solution with high ammonia contents, compared to that of sample A The higher ammonia content of sample B in initial solution could lead to ... nanorods layers structure were obtained by controlling growth concentration and position via low -temperature hydrothermal process The shape evolution of nanodendrite–nanorod structure was discussed ... better optical properties and lesser defects comparing to those of nanoflower–nanorod structures High ammonia concentration in the initial hydrothermal solution promotes secondary nucleation and...
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Bactericidal effects of low temperature oxygen plasma on bacillus stearothermophilus and staphylococcus aureus
... with high- temperature dry heat at 140 C for 10 (b, e) and the bacteria treated with low -temperature highly dissociated oxygen plasma for 20 s (c, f) Binding of DNA dyes to bacteria treated with high- temperature ... w ith low temperature highly dissociated oxygen plasma: (a) for 55 seconds; (b) for 240 seconds Figure SEM photographs of bacteria Staphylococcus aureus treated w ith low temperature highly dissociated ... un-treated bacteria, (b, e) bacteria treated with high- temperature dry heat for 10 minutes at 140 C and (c, f) bacteria treated w ith low -temperature highly dissociated oxygen plasma for 20 seconds...
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Báo cáo hóa học: " Low temperature of radiofrequency ablation at the target sites can facilitate rapid progression of residual hepatic VX2 carcinoma" pdf
... survive high temperature from 5055°C However, cells can seldom survive temperatures above 55°C [9] Therefore, it seems that most residual tumor and rapid progression should occur when the temperature ... although the target temperature can be set as high as 105-115°C during RFA, only the tissues that surround the electrodes can reach that temperature [15] In fact, the real temperature of the tumor ... HCC The real ablative temperature of the tumor might be nearer to the target temperature, compared with the clinical situation This was why we chose 85°C as the highest RFA temperature At present,...
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Báo cáo toán học: " Synthesis of highly transparent ultrananocrystalline diamond films from a lowpressure, low-temperature focused microwave plasma jet" ppt
... of hydrogen trapping during synthesis is expectably caused by high- temperature growth (high- pressure) due to the hydrogen desorption temperature which is between 600°C and 1, 000°C [21] The above ... excitation of the focused plasma jet [13,14], enabling it to achieve high- efficiency and high- quality deposition at low-pressure/low -temperature [LPLT] conditions (without substrate heating) The MPJCVD-enhanced ... with the typical plasma processes [10-12] The highly transparent UNCD films were grown directly on glass substrates with a low glass transition temperature (T g 557°C) The process opens further...
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Báo cáo hóa học: " Comparison of nickel silicide and aluminium ohmic contact metallizations for low-temperature quantum transport measurements" docx
... anomalous resistance peak, we have performed temperature dependence measurements as shown in Figure The magnitude of the peak is seen to rapidly increase as the temperature is reduced Whilst the BCS ... to increase towards a limiting value of 3.52 kTc as the temperature is reduced (≈ 360 μeV for aluminium), it changes only weakly in the temperature range shown here (≈10%) [28] This is therefore ... Figure shows the temperature dependence of both μ and the fitted values of lj, and can be seen to be independent of the choice of contact metallization The obtained values are Figure Temperature dependence...
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Báo cáo hóa học: " Catalytic ozone oxidation of benzene at low temperature over MnOx/Al-SBA-16 catalyst" pdf
... shown by the TPR results, Al-SBA-16MA15% has a higher degree of reduction than Al-SBA16-MN15%, which may lead to higher lattice oxygen mobility and higher oxidation activity It has been reported ... Al-SBA-16-MA15% would show a higher activity for the catalytic ozone oxidation of benzene than AlSBA-16-MN15% As shown by the TPR results (Figure 3), Al-SBA-16MA15% has higher reduction ability than ... reduction ability than Al-SBA-16MN15% This implies that Al-SBA-16-MA15% has higher lattice oxygen mobility, leading to higher activity for the oxidation reaction In addition, as mentioned above,...
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Báo cáo hóa học: " Low-temperature synthesis of CuO-interlaced nanodiscs for lithium ion battery electrodes" potx
... nanodisc structures, temperature- and time-dependent experiments were carried out Figure shows the series of typical FESEM images of samples taken after reaching a preset temperature and time ... to a tendency to form a 1-D structure [10,14,15,18] With the increase in the reaction temperature from room temperature to 50°C, each nanowire was shortened and thickened laterally due to the oriented ... mA h g-1, respectively, and a high reversible capacity of approximately 440 mA h g-1 obtained after 20 cycles These CuO/MWCNT composite nanostructures exhibited a higher reversible lithium storage...
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Báo cáo hóa học: " Low-temperature fabrication of layered selforganized Ge clusters by RF-sputtering" potx
... obtain sufficiently high depth resolution to separate the signals arising from the different layers, and to detect and investigate possible compositional changes Conventional TEM and high- resolution ... annealing at 700°C (Figure 1b), the samples still retain a layered structure, but for temperatures of 800°C or higher, a clear diffusion of Ge and a destruction of the multilayers structure are ... formed, due to their higher material density As a result of the two-dimensional projection of a three-dimensional sample, some of the layers appear to be continuous The image with the higher magnification...
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