Significant elevation of pH and descension of intracranial pressure occurred upon the achievement of hypothermia [7.06±0.15 vs 6.83±0.20 for pH, t=5.164, P < 0.05; (2.03±1.01) vs (2.57±0.93) kPa for intracranial pressure, t=2.948, P < 0.05].
Results:(1)SjvO 2 and CBF/CMRO 2 increased significantly during hypothermia from 66 24%±10 32% to 93 81%±3 86% and 17 91±3 04 to 139 28±13 25 respectively.
When the temperature was at 34℃ during hypothermia,the absolute latency of wave V was (6 31±0 36)ms,and the interpeak latency of Ⅰ Ⅴ was (4 73±0 46)ms.
mild hypothermia-treated group (H), 15min after brain injury, maintained the body temperature between 32-34℃(anal temperature) for 3h by physical hypothermia method;
Decreasing temperature(18—22 ℃) at natural light and adding an appropriate quantity of GA_3 in medium were helpful for the formation of strong sprouts. The rooting rate was 66.26% with rooting 55 adventitious buds among 83,and medium of 1/2 MS+IAA 1.0 mg/L+NAA 1.0 mg/L+NaCl 200 mg/L adapted to root.
降温(18~22℃)、自然光照、并添加适量的GA3有利于壮芽形成,在诱导生根的83个芽中的55个生根,其中1/2M S+IAA1.0 m g/L+NAA 1.0 m g/L+N aC l 200 m g/L最适宜生根,生根率达66.26%。
This paper offers an intelligent control system of increasing and decreasing temperature that imitates artificial experience and is successfully applied to fluorescent PCR gene analytical instrument, with the detailed usage and program for DS18B20 a temperature sensor.
BulI in Blue fibroblasts of passage 5 were cryo-preserved by method of embryo freezing with temperature decreasing rate of 0.3℃,0.6℃,0.9℃ and 1.2℃ per minute, the attachment rates thawed was 76.8% -88.6%.
Under consideration of higher drying quality of aloe dry product the optimized technological parameters for aloe freeze-drying with 6~9 mm thickness were obtained by means of nonlinear optimized theory and method, and these parameters were as follows: drying chamber pressure 108 Pa, board temperature 38~39℃, temperature decreasing rate -0.47~-0.35℃/min and drying time was 6~7 h.
Human embryonic fibroblasts (hEF) of passage 6～14 were cryo preserved by method of embryo freezing with temperature decreasing rate of 0.5℃,0.62℃,0.89℃ and 1.12℃ per minute.
Two-stage auto-cascade refrigeration system is developed with R600a/R23,the characteristics of temperature change in the course of temperature decreasing process have been analyzed in different proportion of refrigerant mixture.
6. Bull in Blue fibroblasts of passage 5 were cryo-preserved by method of embryofreezing with temperature decreasing rate of 0.3 , 0.6 0.9 and 1.2 per minute. The attacnment rates thawed was 76.8%~88.6%. The result suggests that the proper equilibrium duration is 2 hours.
Compound 3 exhibited the enchased texture of a smectic liquid crystal from 209.4°C to 219.5°C on heating, while 2 exhibited a liquid crystalline phase from 87.4 to 83.2°C on cooling.
Results indicate that, after atoms are emitted from an atomic oven, the longer the atoms move, the worse the distribution of the atomic beam shows, regardless the laser cooling is taken or not.
Under such adverse situations, the potential for cerebral protection through hypothermia has been intensively investigated in clinics by lowering brain temperature to restrain the cerebral oxygen demands.
It is now clear that hypothermia would serve as the principal way for neurologic protection in a wide variety of emergency medicines, especially in cerebral damage, anoxia, circulatory arrest, respiratory occlusion, etc.
Compared with the expanded trials in clinics, only very limited efforts were made to probe the engineering issues involved, which turns out to be a major obstacle for the successful operation of brain hypothermia resuscitation.
Aiming to provide a complete overview of the brain hypothermia resuscitation, this article comprehensively summarizes the recent progresses made in theoretical, practical and experimental techniques in the area.
The contribution of clusters to the equilibrium susceptibility of magnetic fluid grows exponentially with decreasing temperature, being manyfold larger at low temperatures than that of single particles.
The Pitzer parameter βMX(1)L, which characterizes the short-range interaction between unlike charged ions, is negative, and its absolute value increases with decreasing temperature.
The crystallization of some inorganic salts (KH2PO4, NaCl, Sr(NO3)2, KNO2, Ca(OH)2) by the thermal-gradient (with decreasing temperature) and solvent-evaporation methods using microwave heating of solutions is investigated.
The temperature dependence of a deforming stress (including both low-temperature decreasing branch and an anomalous high-temperature peak) has been calculated on the basis of one mechanism.
降温
cooling
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