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The present invention relates to a method of controlling a multi-heat source multi-heat pump system having an air heat source or a heat accumulation operation, a simultaneous operation of a heat source source and a heat accumulation and simultaneous operation, and more particularly, The cold water is selectively produced in the water-cooled and air-cooled condensers without using a separate gas heat source hot water supply device, and the cold water is selectively stored in the cold storage tank And to provide a control method of a multi-heat source multi-heat pump which is used as hot water. The air heat source and the heat source are used as heat sources of the heat pump, and at the same time, the operation mode control based on the heat storage base, the cooling base, the air heat source base, And electronic valves can be used to control the automatic switching control of the regenerative single mode, single regenerative single mode, regenerative single phase simultaneous cooling, The
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ABSTRACT: The changes in packaged fresh-cut grape quality and microbial growth as affected by mild heat treatments and the retention of grape cap stems during 5 °C storage were evaluated. Each individual grape was either manually pulled off (stemless) from the stems, or cut (cut stem) to allow for a 1- to 2-mm cap stem remaining on the berry. The samples were sanitized in 100 mg/L chlorine solution for 1 min, followed by a mild heat treatment in a water bath (45 °C, 8 min) or an oven (55 °C, 5 min). After cooling, the berries were packaged in rigid trays sealed with a gas permeable film and stored at 5 °C. Product quality and decay rate were evaluated periodically during storage. The results indicate that in the package headspace for hot water treatment of stemless grapes, partial pressures of O2 declined significantly (P , 0.05) less and C2H4 increased significantly (P , 0.001) less than for the control and hot air treatment. Stem removal and heat treatment had significant (P , 0.05) ...
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One of the channels they studied, called TRPV1, reacts to hot temperatures -- about 100 degrees Fahrenheit. It is also responsible for the ability to sense spicy foods, such as chili peppers. A second channel, TRPV3, responds to temperatures of about 85 degrees. It also senses many food flavors such as those found in rosemary, oregano, vanilla and cinnamon that elicit a warm sensation.. When the TRPV1 and TRPV3 subunits recombine, the heteromeric channel is tuned to about 92 degrees. Surprisingly, the study showed that the hybrid channel has an even higher chemical sensitivity than the channels that made it up.. Zheng and his colleagues also showed that channels made up of TRPV1 and TRPV3 subunits react to heat at a rate about midway between that of the two constituent channel subunits. But repeatedly exposing the hybrid channels to their target temperature boosted their response, a behavior called sensitization, which TRPV3 also exhibits.. It says I remember this temperature. I will make a ...
Description: This map shows trends in unusually hot temperatures at individual weather stations that have operated consistently since 1948. In this case, the term unusually hot refers to a daily maximum temperature that is hotter than the 95th percentile temperature during the 1948-2016 period. Thus, the maximum temperature on a particular day at a particular station would be considered unusually hot if it falls within the warmest 5 percent of measurements at that station during the 1948-2016 period. The map shows changes in the total number of days per year that were hotter than the 95th percentile. Red upward-pointing symbols show where these unusually hot days are becoming more common. Blue downward-pointing symbols show where unusually hot days are becoming less common. For more information: www.epa.gov/climate- ...
While there are claims that there has been a hiatus in global average temperatures, no such hiatus has occurred at the extreme end of the temperature spectrum. New research shows extremely hot temperatures over land have dramatically and unequivocally increased in number and area despite claims that the rise in global average temperatures has slowed over the past 10 to 20 years.
Provides a comprehensive review of catalysis by enzymes at extreme temperatures. Covers what is known about organisms that can grow near 100°C and the specific properties of the limited number of enzymes and proteins that have been purified from them. Also discusses techniques and methods for investigating how proteins and nucleic acids are stabilized at extreme temperatures and explores the potential application of these enzymes.
A therapy system for therapeutically treating a desired region of the body includes a fluid reservoir, a heat transfer pad, and first and second fluid circulation lines. The heat transfer pad includes a first pad port, a bladder, and a second pad port. The first fluid circulation line is connectable to the first pad port for withdrawing heat transfer fluid from the fluid reservoir and delivering it to the heat transfer pad. The second fluid circulation line is connectable to the second pad port for withdrawing heat transfer fluid from the heat transfer pad and delivering it to the fluid reservoir. The heat transfer pad additionally includes a pad flowpath adjustment member positioned in the pad flowpath to adjust the system resistance to flow. The adjusted system resistance to flow fixes the desired treatment temperature of the heat transfer pad in response to the heat transfer fluid circulating through the pad flowpath. The desired treatment temperature is correlated to the body region being treated.
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With the Valley under an excessive heat warning from 10 a.m. Tuesday until 8 p.m. Wednesday, the National Weather Service is predicting more unseasonably hot temperatures.
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Washington: Hot temperature is the most important factor in predicting the risk of wildfire than humidity, rainfall, and moisture, a new study has
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Hot temperatures when Gaming on macbook pro 15in - So i would like to buy civilization 5 to run on my windows side in boot camp. Whenever i do play the demo it gets extremely hot and a program reading
The aim of this work is to investigate the effect of acid treatment -before and during heat inactivation- on the heat resistance of Escherichia coli K12 MG1655 cells at lethal temperatures. E. coli cells were grown in Brain Heart Infusion broth until they reached the stationary phase (≈10(9) cfu/mL). Approximately 30 min before thermal inactivation the early stationary phase cells were added in Brain Heart Infusion broth with a specific pH value, achieved with addition of either acetic (50% (v/v)), lactic (50% (v/v)) or hydrochloric acid (30% (v/v)), and inactivation experiments took place at 54 °C and 58 °C. The inactivation dynamics are analysed using the inactivation model of Geeraerd et al. (2000). This enables to define the induced thermotolerance of E. coli as a prolongation of the shoulder and/or a reduction of the inactivation rate. Generally, addition of acids increased the heat resistance of E. coli. The induced resistance depends on the type of acid and on the quantity added, i.e. ...
Global warming is affecting biodiversity; however, the extent to which animal reproductive processes respond to predicted temperature increments remains largely unexplored. The thermal environment has a pronounced impact on metabolic rates of ectotherms; therefore, an interesting question to assess is whether temperature increase might affect specific reproductive mechanisms like sperm performance in ectotherms. Moreover, in many species, oviductal fluid (OF) is known to regulate and maintain sperm quality; however, the role of oviductal fluid in relation to the effects of high temperature on sperm remains unclear. Our aim was to experimentally test the effect of increased temperature on sperm velocity, swimming path and percentage of motility in neutral conditions at ejaculation (without OF) and in femalés reproductive tract fluid (with OF), in a social ectotherm lizard model, Tropidurus spinulosus, which has specific thermal requirements for reproduction. Our results suggest that a rising ...
High temperature is a major environmental factor that limits wheat productivity. Climate models predict greater increases in night temperature than in day temperature. The objectives of this research were to quantify the effects of high day and night temperatures during anthesis on physiological (chlorophyll fluorescence, chlorophyll concentration, leaf level photosynthesis, lipid peroxidation and membrane damage), biochemical (reactive oxygen species [ROS] concentration and antioxidant capacity in leaves) and yield traits and membrane lipid profile and identify the lipids that are associated with high temperature response in wheat. Winter wheat genotypes Ventnor (heat tolerant) and Karl 92 (heat susceptible) were grown at optimum temperatures (25/15°C, maximum/minimum) until the onset of anthesis. Thereafter, plants were exposed to high night (HN, 25/24°C), high day (HD, 35/15°C), high day and night (HDN, 35/24°C) or optimum temperatures. Compared with optimum temperature, HN, HD and HDN ...
Definition of Heat-Activated Label in the Financial Dictionary - by Free online English dictionary and encyclopedia. What is Heat-Activated Label? Meaning of Heat-Activated Label as a finance term. What does Heat-Activated Label mean in finance?
In order to establish the thermal process required by acified papaya pulp (pH 3.8) var formosa, a study was carried out on the kinetics of thermal inactivation of the heat resistant enzymes present in the pulp. Since no peroxidase activity was detected, the study was focused on pectinesterase. The heat inactivation curves at 75, 77 and 80C showed a change in slope indicating the presence of two different portions of the enzyme, one heat labile and the other hear resistant. The decimal reduction limes (D value) of pectinesterase were 0.8, 0.3 and 0.2 min for the heat labile portion and for the heat resistant portion 16.7, 7.2 and 3.7 min, respectively. The temperature-dependency factor for the heat labile portion was 9.2C and 7.8C for the thermostable portion, while the activation energies were 258.3 and 304.4 Kj/mol. These values were within the range of 167.5-418.7 Kj/mol reported in the literature for the thermal inactivation of enzymes. Thermal destruction studies with Clostridium ...
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A recent study on the Heat Resistant Alloy market closely examines the performance of the major market vendors operating in the Heat Resistant Alloy market for the forecast period 2020 to 2027.
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Thermal shock leads to many cast iron boiler failures, but boiler manufacturers set operational limits to avoid the cumulative conditions that lead to thermal shock. By following manufacturers specifications and scheduling consistent, coordinated servicing, cast iron boiler owners can reduce the risk of thermal shock. The risk of significant downtime and expense A recent study…
Austenitic heat resistant steel Sanicro 25 developed for high temperature applications in power generation industry has been subjected to selected low cycle fatigue tests at ambient and at elevated temperature. Saturated hysteresis loops at both temperatures were analyzed to deduce the probability density distribution of the internal critical stresses and to estimate the contribution of the effective stress for different strain amplitudes. The internal structure of the material at room and elevated temperature was studied using transmission electron microscopy and the results were discussed in relation to the cyclic stress- strain response. ...
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PubMedID: 25519550 | The flavoprotein Tah18-dependent NO synthesis confers high-temperature stress tolerance on yeast cells. | Nitric oxide : biology and chemistry / official journal of the Nitric Oxide Society | 11/15/2014
Biologists from Utrecht University have described a new molecular mechanism that allows plants to optimize their growth under suboptimal high-temperature conditions. The study offers promising leads for the development of ...
what does preheated oven only mean, Despite large letters on the bottom of the oven saying DO NOT USE FOIL ON THE BOTTOM OF OVEN, the cleaning lady lined our brand new electric oven with foil. Someone preheated it without looking inside, and it stuck to the bottom of the oven. We tried everything to get it up, and it wont budge.
John M. Hunt, M. D. Lewan, R. J. C. Hennet; Modeling oil generation with time-temperature index graphs based on the Arrhenius equation. AAPG Bulletin ; 75 (4): 795-807. doi: Download citation file:. ...
Get the latest thermal destruction (energy and renewables) news on Environmental XPRT, the worlds largest environmental industry marketplace and information resource.
In this work, combustion and pollutant formation phenomena in a direct injection Diesel engine are studied using n-Dodecane as fuel. The initial part of work is to validate the results from three dimensional computational fluid dynamics (CFD) with the engine experimental data. Various state-of-the-art models for simulating the droplet spray, impingement, collision, boiling and combustion are employed with the full kinetic mechanism. Extended coherent flame model for three zones predicts the averaged in-cylinder pressure data within 5 % of the experimental readings. CO, CO2, UBHC and NOx are found to be within the error limits between the CFD and experimental results. The CFD study is further extended towards the addition of little EGR for achieving lower NOx emissions and partial injection of fuel in the intake stroke followed by main injection. To facilitate the easy evaporation and mixing of fuel, preheated air is introduced. As compared with early fuel injection without preheating, computed ...
Dynamic Brazilian disc (or splitting) tests were carried out to study the characteristics of energy dissipation and failure behavior of heat-treated granite under impact loading. Six groups of granite samples were treated at the temperatures of 25°C, 100°C, 300°C, 500°C, 700°C, and 900°C, respectively. Each group of heat-treated samples was tested with three impact velocities of 5.4, 7.7 and 13.7 m/s in a modified split Hopkinson pressure bar. An average change rate of incident energy (ACRIE) was proposed to characterize the loading rate effect. The effects of treatment temperature and ACRIE on the energy dissipation and the failure patterns of samples under impact loading were investigated. The results show that the energy dissipation of the granite decreases with the increase of treatment temperature but increases with the increase of the ACRIE. A rise in treatment temperature or ACRIE may lead to smaller size and greater number of sample fragments. The effect of treatment temperature ...
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As the promoter of the zebrafish heat-shock protein 70 (hsp70) gene was used as a core promoter for creating these transgenic fish, heat shock treatment can induce ubiquitous overexpression of dnPlexinA4-GFP in addition to the basal expression specifically observed in the primary sensory neurons (Halloran et al., 2000) (Fig. 3J). Specific AMO (Nasevicius and Ekker, 2000) was designed for plexinA4 mRNA. We checked its activity by examining whether it can prevent the translation of dnPlexinA4-GFP fusion protein after heat shock treatment in this transgenic embryo when AMO was injected at the one-cell stage. In transgenic embryos, heat-induced dnPlexinA4-GFP signals were detected, and signals of in situ hybridization for gfp were also detected ubiquitously. However, in AMO-injected transgenic embryos, no GFP signals were detected after heat-shock treatment. But the gfp mRNA was ubiquitously expressed similarly as in uninjected embryos (data not shown). These results justified our use of this AMO ...
Ceramic end mills machine heat resistant alloys in a completely different way than cemented carbide end mills. In fact, rather than machining, it may be more accurate to describe the mechanism as scarfing. The edge of the tool welds slightly but does not suffer significant damage because ceramics have outstanding resistance to the heat generated during machining. Therefore, compared with cemented carbide end mills, ceramic end mill tool life is significantly longer. Furthermore, cemented carbide end mills commonly break in the early stages of machining, but ceramic end mills can process up to 35 m (see Fig. 1). Cemented carbide end mills are not designed for such high-efficiency cutting at high speed, but ceramic end mills are, which gives them a distinct advantage (see Fig. 2). However, when using ceramic end mills the emphasis is placed on the challenging requirements of the machine tool. This is because of the speed required to generate the heat needed to soften materials without causing ...
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We just took a break from the heat and now, Mother Nature is going to get us again. Hotter temperatures are expected this weekend into next week. Bring on
Exposure to cold and hot temperatures is known to have negative impacts on human health. It is the aim of the present study to assess the health effects of cold and hot temperatures on the population living in the city of Isfahan. Daily data on average temperature and mortalities during the nine-year period 2008-2016 were obtained. Mortalities were stratified by causes (non-accidental, cardiovascu ...
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Expect a high of 93 and breezy conditions on Tuesday with a low of 70. It will reach 90 Wednesday before a front brings cooler temperatures and possible storms.
With temperatures expected to get into the 90s this weekend a Fond du Lac Police officer has some advice for those attending Walleye Weekend at Lakeside Park. Officer Erik Foster says it is best to drink a lot of water and take a break from the walking you do in the park. He says no matter what festival you go to this summer try and find out where the first aid stations are or where emergency personnel are located. He also says if you attend bigger festivals it is good to have a buddy system in case things go late into the night and theres a chance of intoxication.. ...
Many of us are not looking forward to those triple-digit temperatures coming up, and that includes cooks cramped inside of your favorite food carts.
Global climate change is affecting health and mortality, particularly in vulnerable populations. High ambient temperatures decrease blood pressure (BP) in young and middle aged adults and may lead to orthostatic hypotension, increasing the risk of falls in older adults. The aim of this study was to evaluate the feasibility of a test protocol to investigate BP response and aerobic capacity of older adults in a hot indoor environment. BP response and aerobic capacity were assessed in 26 community-dwelling older women (median age 75.5 years) at a room temperature of either 20 °C or 30 °C. The protocol was well tolerated by all participants. In the 30 °C condition systolic and diastolic BP (median difference 10 and 8 mmHg, respectively) and distance walked in 6 min (median difference 29.3 m) were lower than in the 20 °C condition (all p , 0.01). Systolic BP decreased after standing up from a lying position in the 30 °C (17.4 mmHg) and 20 °C (14.2 mmHg) condition (both p , 0.001). In ...
This month we have seen record breaking temperatures but thats not all that has been hot as the property market in our area is reaching new highs...|br|