mechanism of plant resistance to high temperature
Exergoeconomic performance optimization of an endoreversible intercooled regenerative Brayton combined heat and power plant coupled to variable-temperature heat reservoirs
... ratio of the inlet temperature of hot-side heat reservoir to environment temperature ratio of the inlet temperature of cold-side heat reservoir to environment temperature ratio of the inlet temperature ... propulsion plants He has been the Director of the Department of Nuclear Energy Science and Engineering, the Director of the Department of Power Engineering and the Superintendent of the Postgraduate ... the regenerator is always zero at the design point of the optimal dimensionless profit rate When the total pressure ratio, the heat conductance allocation of the regenerator and the total heat...
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Báo cáo khoa học: "Germination behaviour of 3 species of the genus Pinus in relation to high temperatures suffered during forest fires" pdf
... possibility of sprouting and the characterispopulations and communities after tics of the the fire Many seeds need to be exposed to high temperatures during a certain period of time in order to germinate, ... method consists of exposing no-selected seeds to high temperatures during short periods of time in order to simulate the action of fire under conditions as natural as possible According to Trabaud ... a fraction of the seeds available for germination The high rate of germination of P sylvestris leads us to belive that these seeds act as r type strategists Its sensitivity to high temperatures...
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introduction to high-temperature superconductivity selected topics
... help of Alex Malozemoff and Bart Riley of American Superconductor Corp., and of Pradeep Haldar and Lech Motowidlo of Intermagnetics General Roger Koch of IBM straightened out my understanding of ... superconductor is kept cold For many years, the requirement of refrigeration to extremely low temperatures had the effect of confining superconductivity to the realm of research laboratories The cost of ... way to obtain very high magnetic fields is to use the ceramic superconductors at low temperatures Of course, in order to wind a coil to produce a magnetic field, the first prerequisite is to make...
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báo cáo hóa học:" Protective versus pathogenic anti-CD4 immunity: insights from the study of natural resistance to HIV infection" potx
... amounts of self-epitopes This second mechanism was found capable to break tolerance and trigger cytotoxic T cell-mediated autoreactivity towards several autoantigens, such as myosin, vimentin ... and destruction of lymphocytes in HIV-1 infection could break tolerance to self-peptides and permits the generation of autoreactive CTLs responding to the cleavage products of apoptotic cells 2b) ... unveiling of cryptic epitopes following internalization of CD4 in complex with gp120 was proposed to explain the pathogenesis of this phenomenon [14,15] A further in vivo proof of principle of the...
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Báo cáo lâm nghiệp: "Micrometeorological assessment of sensitivity of canopy resistance to vapour pressure deficit in a Mediterranean oak forest * " potx
... UK), placed 1.5 m above the top of the canopy Heat storage into the canopy biomass was evaluated assuming that its temperature could be related to the temperature of the air inside the canopy ... mass flow of water in the stems of herbaceous plants Plant Cell Environ 10, 777-782 Monteith JL (1986) Implications of stomatal response to saturation deficit for the heat balance of vegetation ... Implications of sensitivity of foliage to vapour pressure deficit for water and energy budgets of the stand have been theoretically discussed by Choudhury and Monteith ing (1986) Sensitivity of stomata to...
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Báo cáo khoa học: "Value of diffusion weighted MR imaging as an early surrogate parameter for evaluation of tumor response to high-dose-rate brachytherapy of colorectal liver metastase" docx
... and cytochemical determination of cell death by apoptosis Histochem Cell Biol 2008, 129:33-43 Gromoll C, Karg A: Determination of the dose characteristics in the near area of a new type of 192Ir-HDR ... years) with a total of 43 unresectable colorectal metastases underwent HDR-BT in a total of 37 sessions Sixteen patients were found surgically unresectable due to unfavourable anatomic localization ... interval of 1-2 weeks would have been superior, but we did not want to prolong hospitalization of these advanced cancer patients Hence, larger clinical studies have to confirm the ability of DWI to...
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Báo cáo y học: "The determinants of susceptibility/resistance to adjuvant arthritis in rats" ppt
... restricted to a few epitopes but later spread to include other epitopes Eventually, the antibody response of both rat strains was narrowed down to the epitopes 31 to 46, 211 to 226 and 349 to 364 of ... two epitopes of self-hsp65, epitope 61 to 80 and epitope 436 to 455 Furthermore, pretreatment (tested separately) of naïve LEW rats with Bhsp65 peptide 31 to 46 and Bhsp65 peptide 37 to 52, Rhsp65 ... Bhsp65 and to epitope 61 to 80 of Rhsp65 These epitope regions [25] are included among the epitopes reacted by sera of LEW rats and BN rats [23] Moreover, adoptive transfer of sera of late phase...
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báo cáo khoa học: " Metabolic adaptation of skeletal muscle to high altitude hypoxia: how new technologies could resolve the controversies" pdf
... http://genomemedicine.com/content/1/12/117 total oxidative capacity The primary mechanism driving the loss of mitochondrial density is likely to be mitochondrial autophagy, brought about by a HIF-1-dependent upregulation of the ... induced after one hour of hypoxia, and were found to integrate into the mitochondria of hypoxic ventricular myocytes, leading to mitochondrial defects associated with opening of the permeability ... The mechanisms by which a depleted mitochondrial population might be able to generate adequate quantities of high- energy phosphates to support normal cellular function are of direct relevance to...
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Báo cáo y học: " The role of the N-terminal segment of CCR5 in HIV-1 Env-mediated membrane fusion and the mechanism of virus adaptation to CCR5 lacking this segment" ppt
... is likely to reflect the apparent "on-rate" of CCR5 binding The kinetics of formation of ternary complexes at 18°C was evaluated by measuring the rate of acquisition of resistance to a high concentration ... coreceptor that were capable of progressing to fusion in the presence of high doses of Sch-C The steep temperature- dependence of CCR5(∆18) recruitment and the relatively low efficacy of fusion ... CCR5(wt) (to create TAS), a fraction of cells became resistant to Sch-C Considerable fusion occurred upon shifting cells to 37°C from TAS in the presence of high doses of the inhibitor added...
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Demotivation in learning English of the students of Ly Thai To High School in Bac Ninh = Sự mất hứng thú học tiếng Anh của học sinh trường THPT Lý Thái Tổ, Bắc 20150227
... strategies to pass the required exams with a minimum of effort Are these examples of resistance to language learning (Canagarajah, 1999), a lack of motivation, or might some other factors be involved, ... underlying causes of de-motivation to ensure they are properly understood so that effective solutions to the problem can be devised I have been a teacher of English at Ly Thai To High School in ... happens? What factors make them de-motivated? This is the reason why I decided to choose this title of the study: ”De-motivation in learning English of the students of Ly Thai To High School in...
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Genomic analysis of chemo resistance to HDAC inhibitor in gastric cancer cells
... hydroxamic acid moiety of SAHA binds to the zinc at the bottom of the catalytic pocket The burying of most of the structure of SAHA into the active site of HDAC prevents HDAC from binding to its natural ... ANALYSIS OF CHEMO -RESISTANCE TO HDAC INHIBITORS IN GASTRIC CANCER CELLS ZHU YANSONG (M.Sc NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF PHYSIOLOGY YONG LOO LIN SCHOOL OF ... group of agents for the treatment of cancer, HDAC inhibitors will be applied into more and more clinical trial of different type of cancers Thus it is necessary to understand the resistance mechanism...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 1
... ignition to occur According to Walker (1967), extended storage at relatively high temperature enabled oxidation reactions to pass through the period of induction and thus attain a rapid rate of chemical ... becomes important to elucidate the kinetics of oxygen chemisorption in order to evaluate the autoignition potential of low temperature wood chars that have been pre-exposed to prolonged heating ... low -temperature evaporation model seeks to address some problems associated with low -temperature combustion phenomenon by firstly restoring moisture for low temperature heating where high temperature...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 2
... respect to both lowtemperature and high- temperature drying Alternative approaches such as the desorption kinetics approach and the evaporation temperature approach are also discussed 2.1 Reviews of ... grain, of which the ratio of axial to transverse permeability for softwoods is approximately 20,000 (Siau 1984); the large axial permeability permits relative ease of escape The velocity of the ... zone, instead of an evaporation front into a drying model yields a high- temperature drying model that has been widely used in pyrolysis studies of wood It has thus been commonly referred to as the...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 3
... is determined by the degree of preburn When modelling preborn wood in this study, a factor of has been applied onto the porosity of green wood to derive the porosity of preburn wood, since pre-burn ... balance It is constructed to emulate the initial drying phase of low -temperature drying In this model of initial drying phase, evaporation is deemed to occur at evaporation temperature at 100°C The ... erratic velocity profile S-curve temperature profile COUPLED VELOCITY AND TEMPERATURE DEVELOPMENT IN SELF-HEATING Figure 3.1: Salient features of porous models for low -temperature long-term...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 4
... evaluation of a series of critical ignition temperature T∞ for different sample sizes A number of trial and error experiments have to be carried out to “bracket” the right critical ignition temperature ... 4.1.2.2 Location of thermocouples Eighteen type-T thermocouples (operating temperature: -200°C to 350°C) were used to measure the temperature history of the wood cube throughout the ... experiments The intention to keep to a smaller sample size, in lieu of the standard 100mm x 100mm x (up to 50mm) sample, was to maintain the end-use condition of this type of hardwood that was available...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 5
... segment to clean the surface oxides before chemisorption experiment This was because the removal of surface oxides would require the heating of these wood chars to high temperatures Unlike high- temperature ... furnace temperature was immediately cooled to the chemisorption temperatures (CST) In each run, a few minutes of holding time were allowed for the chemisorption temperature to equilibrate and to establish ... kinetic studies of sorption process, particularly in the field of chemisorption (Laine, Vastola and Walker 1960) This kinetic model is able to account for the variation of the energetics of chemisorption...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 6
... values of β , the surface temperatures were therefore calculated using erf β The calculation yielded surface temperatures of 558.2°C to 786.2°C, which were higher as compared to the surface temperatures ... different temperature profiles in Figure 6.9 Model has a depressed curve while the temperature profiles of Model and modified Darcy’s law Model were rather linear The linear temperature profiles of ... Velocity contour Temperature contour Figure 6.11: Velocity and temperature contours on z = 20mm from the mid-plane for longitudinal flow using IDP Model Velocity contour Temperature contour Figure...
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Thermal combustion and oxygen chemisorption of wood exposed to low temperature long term heating 7
... out to investigate the propensity of self-ignition of the low -temperature, long-term preheated wood chars Separate parameters of testing and evaluation model of reactive sites were carried out to ... reactivity of this amorphous cellulosic chars Oxygen chemisorption provides a chemical viewpoint to in addition to thermophysical approach to examine self-heating and spontaneous combustion of low -temperature, ... work: To further elucidate the carbon-oxygen reaction, temperatureprogrammed desorption studies could be carried out to study the transient rates of consumption of oxygen and production of CO2...
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Mechanism of arsenic release to groundwater, Bangladesh and West Bengal
... Wells may contain several screened sections; values are top of highest screen and bottom of lowest screen Values for PTW 12 in Faridpur refer to before and after Fe treatment HTW=hand pumped water ... Fig 2d The stoichi2+ ometry of the reaction yields HCOÀ in a and Fe mole ratio of according to the reaction: 2+ values (adjusted for a background conHCOÀ / Fe À1 centration of HCOÀ of 220 mg l ... 403±413 dolomite (S.I of 0.3), owing to the high concentrations of HCOÀ 4.1.1 Sediment analysis Sedimentary Fe oxyhydroxides are known to scavenge As (Mok and Wai, 1994; Thornton, 1996; Joshi and...
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Tài liệu Báo cáo khoa học: Hypoxic resistance to articular chondrocyte apoptosis – a possible mechanism of maintaining homeostasis of normal articular cartilage pdf
... considered to be a key factor in the growth and survival of chondrocytes Hypoxia is known to regulate the expression of many genes, but little is known about its role in either apoptosis or anti-apoptosis, ... known to induce a wide range of responses, depending on cell type and levels of ROS within the cell [23,24] The aims of this study were to investigate the major signalling pathways and effects of ... models of OA [2,3] Tumour necrosis factor-related apoptosis-inducing ligands (TRAILs) are type II transmembrane molecules that trigger the apoptotic signal cascade by binding to cognate receptors...
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