phonons temperature and heat flux
Báo cáo khoa học: Temperature and concentration-controlled dynamics of rhizobial small heat shock proteins doc
... class A and class B sHsp complexes is adjusted to the ambient temperature and to protein concentration, and that mutant proteins equivalent to HspH(G114A) form unstable complexes Materials and methods ... 45 and 38 kDa (B) Elution profile at 25 °C of a sample diluted from mgÆmL)1 (arrow) to 0.5 mgÆmL)1 elution of standard proteins was completely independent of temperature (Fig 1D) Temperature- and ... and 26 room temperature [35] Hence, its oligomeric state is not influenced by temperature Hsp26, the second sHsp in yeast, is, however, a temperature- controlled chaperone that dissociates at heat...
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Pyrolysis and combustion processes of combustible materials under external heat flux
... under 25 kW/m2 heat flux 169 7.5 Temperatures inside Cherry slabs under 50 kW/m2 heat flux 170 7.6 Temperatures inside Cherry slabs under 75 kW/m2 heat flux 172 7.7 Temperature and gas velocity ... under 75 kW/m2 heat flux 185 7.19 Temperatures inside PMMA slabs under 25 kW/m2 heat flux 186 7.20 Temperatures inside PMMA slabs under 50 kW/m2 heat flux 187 -xviii- 7.21 Temperatures ... under 75 kW/m2 heat flux 199 7.34 Temperatures inside ABS slabs under 25 kW/m2 heat flux 200 7.35 Temperatures inside ABS slabs under 50 kW/m2 heat flux 201 7.36 Temperatures inside...
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Effect of periodic suction on three dimensional flow and heat transfer past a vertical porous plate embedded in a porous medium
... -6.4648 4.4 Rate of heat transfer The rate of heat transfer at the wall i.e the heat flux in terms of Nusselt number Nu for different values of α and Kp are entered in Table The heat flux at the wall ... the velocity and temperature of the flow field are solved employing perturbation technique and the effects of the flow parameters on the velocity and temperature of the flow field and also on ... velocity and temperature of the flow field are solved employing perturbation technique and the effects of the pertinent parameters on the velocity, temperature, skin friction and the rate of heat...
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Natural convection unsteady magnetohydrodynamic mass transfer flow past an infinite vertical porous plate in presence of suction and heat sink
... Energy and Environment (IJEE), Volume 3, Issue 2, 2012, pp.209-222 220 4.4 Skin friction and rate of heat transfer Variations in the values of skin friction τ and the heat flux i e rate of heat ... ωt=π/2 4.2 Temperature field The temperature field is found to change appreciably with the variation of Prandtl number Pr and heat sink parameter S These variations have been shown in Figures and respectively ... velocity, temperature, concentration distribution and also on the skin friction and rate of heat transfer in the flow field are analyzed and discussed with the help of velocity profiles 1-5, temperature...
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Hydromagnetic convective flow past a vertical porous plate through a porous medium with suction and heat source
... constant suction and heat flux in presence of a transverse magnetic field Approximate solutions are obtained for velocity field, temperature field, skin friction and rate of heat transfer using ... suction and heat flux and transverse magnetic field Let the x′-axis be taken in vertically upward direction along the plate and y′-axis normal to it Neglecting the induced magnetic field and the ... )} 3.2 Heat Flux The heat flux at the wall in terms of Nusselt number is given by ⎛ ∂T ⎞ Nu = ⎜ ⎜ ∂y ⎟ ⎟ ⎝ ⎠ y =0 (38) (39) (40) (41) Using equation (38) in equation (41), the heat flux at the...
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Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor
... stator flux- linkage vector are obtained from the measured stator voltages Vsα and Vsβ and currents i sα and isβ , then by using (1) and (4) qand d-axis flux linkage are drived Also, by usig (4) qand ... the torque and flux hysteresis bands are 0.001N·m, and 0.001 Wb, respectively Implementations of torque, q– and d–axis rotor reference frame stator currents and three-phase currents and Back-EMFs ... electromagnetic torque, fluxs and currents in dq reference frame have been used The stator flux- linkage vector can be obtained from the measured stator voltages Vsα and Vsβ and currents isα and isβ as ψ...
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Direct torque and indirect flux control of brushless DC motor
... [Tα β ] ⎣ Xb ⎦= [Tα β ]+ [TL L ] Xca Xc OZTURK AND TOLIYAT: DIRECT TORQUE AND INDIRECT FLUX CONTROL OF BRUSHLESS DC MOTOR 353 After (3) is expanded and multiplied by the original × Park transformation ... ds are the mutual inductances between d- and q-axis Ldsf and Lq sf are the mutual inductances between dq-axes and permanent magnet (PM), respectively, and if is the equivalent current generated ... poles, ωr e is the electrical rotor speed, eq (θe ) and ed (θe ), ir s and ir , kq (θe ), and kd (θe ) are the dqq ds axes back EMFs, currents, and back EMF constants according to the electrical...
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Tài liệu Báo cáo khoa học: Temperature and phosphate effects on allosteric phenomena of phosphofructokinase from a hibernating ground squirrel (Spermophilus lateralis) pptx
... paid to the effects of temperature on enzyme allostery and the influence of temperature in the regulation of PFK activity at both high (euthermic) and low (hibernating) temperatures Results Selected ... 3–15 °C temperature range of the plots were 103.2 ± 0.2 and 80.0 ± 1.2 kJ mol)1 in the absence and presence of phosphate For the 15–45 °C temperature range, the Ea values were 25.7 ± 0.7 and 26.2 ... modification Another approach focused on temperature and pH dependent shifts in PFK activity and subunit assembly [6,7,21,22] The effects of acidosis and temperature were proposed to cause reversible...
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Báo cáo khoa học: Binding affinities and interactions among different heat shock element types and heat shock factors in rice (Oryza sativa L.) ppt
... incubation temperatures, i.e 12, 22, 32 and 37 °C (Fig 3B) OsHsfA2c, OsHsfA9 and OsHsfB4b polypeptides formed protein–DNA complexes Binding activity was low at 12 °C and was enhanced with increasing temperature; ... 3P-type HSE at the indicated temperatures and subjected to PAGE electrophoresis and phosphor-imaging White and black arrowheads indicate positions of unbound DNA fragments and protein–DNA complexes, ... (synthetically defined tryptophan and histidine dropout medium) and SD-WH + mM 3-AT and WH + mM 3-AT (synthetically defined tryptophan and histidine dropout media with and mM of 3-AT) The lane with...
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Báo cáo khoa học: Pressure and heat inactivation of recombinant human acetylcholinesterase Importance of residue E202 for enzyme stability pdf
... measurements following pressure or heat treatment, we investigated the structural and functional stability of wild-type rHuAChE and four mutants (D74N, E202Q, E450A and a sextuple mutant, E84Q/E292A/D349N/ ... enzymes: luciferase and urease [41], and fructofuranosidase [42] It was also reported for wild-type HuBuChE during the first of ultrasound inactivation kinetics [43] and after pressure /temperature exposure ... induced inactivation of wild-type AChE and its mutants Thermal inactivation was performed by heating purified enzymes at 55 °C Heat inactivation of wild-type AChE and selected mutants was irreversible...
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Báo cáo " Calculation of Lindemann’s melting Temperature and Eutectic Point of bcc Binary Alloys " pot
... Melting temperature, Cs, Ref Melting temperature, Rb, Ref 305 300 295 2700 Melting curve, present Melting temperature of Cr, Ref Melting temperature of Mo, Ref Eutectic point, present Melting temperature, ... curve beginning from the melting temperature TA of the host element A passes through a temperature minimum TE known as the eutectic point E and ends at the melting temperature TB of the doping element ... s = (30) with Tm(1) and Tm(2) as melting temperatures of the first or doping and the second or host element, respectively, composing the binary alloy Therefore, the melting temperature of bcc...
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Báo cáo khoa học: Temperature and salts effects on the peptidase activities of the recombinant metallooligopeptidases neurolysin and thimet oligopeptidase pdf
... changes of temperature and ionic strength Finally, differences in the specicities and effects of salts and temperature between the two enzymes were signicant, although not large, and could be ... conduced at different temperatures and at different salt concentrations [5] Temperature dependence of the hydrolysis reaction rates of the substrates by neurolysisn and TOP The temperature dependence ... Ala and Ile at the X position gave two linear ttings, above and below % 22 C (Fig 1B), indicating different rate-limiting steps at each temperature range (above and below 22 C) The DG* DH* and...
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Báo cáo khoa học: In vivo degradation of nitric oxide synthase (NOS) and heat shock protein 90 (HSP90) by calpain is modulated by the formation of a NOS–HSP90 heterocomplex pot
... elevation in [Ca2+]i and a higher responsiveness to HSD We report here that, in the brain and aorta of HSDtreated rats, the extent and patterns of proteolytic degradation of NOS isozymes and HSP90 are ... FEBS 2503 In vivo degradation of NOS and HSP90 by calpain M Averna et al Table Levels of native and 15 kDa calpastatin species in brain and aorta of NMS and HMS rats treated with HSD for weeks ... SDS-PAGE and blotted as described previously nNOS, eNOS and HSP90 were detected with specific mAbs (C) nNOS (open circles) and HSP90 (filled circles) immunoreactive materials detected in (A) and the...
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Báo cáo khoa học: The influence of temperature and osmolyte on the catalytic cycle of cytochrome c oxidase ppt
... well defined metal centers that act as electron acceptors and donors, ET rates into and out of these centers are influenced by temperature and can be analyzed using the Arrhenius relation [26] In ... with the same syringe and the CO flashed off The temperature of the cuvette wall was monitored before and after flashing The samples were monitored at a wavelength of 442 nm and the data stocked ... analysis and prevents us from being able to make a direct comparison between CCO at high temperature (> 290 K) with and without ethylene glycol The bending of the curve in Fig at the higher temperatures...
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engineering thermofluids thermodynamics fluid mechanics and heat transfer
... – Pressure Pa Perimeter m Heat transfer per unit mass J/kg Linear heat generation rate W/m Heat flux W/m Volumetric heat generation rate W/m Heat transfer J Rate of heat transfer W Gas constant ... Stewart, and Lightfoot in Transport Phenomena, Rohsenow and Choi in Heat, Mass, and Momentum Transfer, ElWakil, in Nuclear Heat Transport, and Todreas and Kazimi in Nuclear Systems have pursued a similar ... enthalpy and h, standing for heat transfer coefficient, appear in the same equation This occurs in chapters IVe and IVf, dealing with boiling and condensation Also note that h and H stand for height...
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hydrodynamics, mass, and heat transfer in chemical engineering, crc (2002) - opet
... through tubes and channels of various shapes, and flow past plates, cylinders, and disks are examined In Chapters and we analyze mass and heat transfer in plane channels, tubes, and fluid films ... 3.1-5 Diffusion Fluxes and the Sherwood Number 3.1.6 Heat Transfer The Equation and Boundary Conditions 3.1-7 Some Methods of Theory of Mass and Heat Transfer ... with Constant Temperature of the Wall 3.6-2 Channel with Constant Heat Flux at the Wall 3.7 Turbulent Heat Transfer in Circular Tube and Plane Channel 3.7-1 Temperature...
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mass and heat transfer analysis of mass contactors and heat exchangers (cambridge series in chemical engineering)
... transfer and then to effectively translate this knowledge to the operation and design of mass and heat transfer equipment Develop the students’ molecular understanding of the mechanisms of mass and heat ... mass and heat transfer based on the relationship between experimental data and model Using these model equations, teach students to design and interpret laboratory experiments in mass and heat ... mass contactors and heat exchangers On successful completion of a course using this textbook, you should understand the basic physical principles underlying mass and heat transfer and be able to...
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introduction to thermal systems engineering thermodynamics, fluid mechanics, and heat transfer
... Chapter Summary and Study Guide 337 Problems 338 HEAT TRANSFER Heat 15 Getting Started inRate Equations Transfer: Modes, and Energy Balances 342 15.10 Heat Transfer Modes: Physical Origins and Rate ... cells Solar heating, cooling and power generation Heating, ventilating, and air-conditioning equipment Biomedical applications Life support and surgical equipment Artificial organs Air and water ... hot-water heater hot-water and cold-water delivery pipes a faucet and a shower head The function of the system is to deliver a water stream with the desired flow rate and temperature Clearly the temperature...
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life temperature and the earth
... carbon in sediments, F2 and F4 the sedimentary recycling fluxes of carbonates and organic carbon, respectively, and Scarb and Sorg the subduction fluxes to the mantle of carbonate and organic carbon, ... biochemical and biophysical upper temperature limit for its metabolism Thus, with the longterm cooling of the Earth’s surface, new metabolisms and cell types became possible as their upper temperature ... and the surface temperature But first a historical overview of theories of the coevolution of life and its environment (the most common definition of the biosphere) is needed The Gaia concept and...
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