查询词典 hypoxia

The present results suggest that (1) NA is not mainly concerned with spontaneous discharges of chemoreceptor sensitive to hypoxia, but does elicit an increase in spontaneous discharges, and (2) the increase of chemosensory unit discharges produced by hypoxia can be inhibited by yohimbine.

结果提示：(1)NA不是维持颈动脉体对缺氧敏感的化学感受纤维自发放电活动的主要因素，但给予NA能增加此类纤维自发放电的频率；(2)在低氧过程中，给予#alpha#_(2)受体拮抗剂育亨宾，可减弱这类纤维对缺氧反应的程度。

The dark adaptation being decreased during acute hypoxia exposure is well known, but the effect of hypoxia on other visual related function is less investigated.

在视觉系统方面，缺氧对暗适应功能的影响已经公认，但视觉功能其他方面的影响仍不够深入，需要进一步研究。

Methods: 27 SD rats were randomly divided into 3 groups: normal oxygen group, hypoxia group and combinational gaoyuanchun grain group (The following named remedy group). Put remedy group and and hypoxia group to decompressure chamber on time, decrease pressure to 0.06MPa, moved them out of decompression chamber 5 hours latter, and determined rats' brains oxygen freee radical changes of each group.

将SD大鼠27只随机分为常氧组、低氧组和复方高原春颗粒组，将药物组和低氧组按时入低压舱减压至0.06MPa，5h后减压出舱，测定每组大鼠脑匀浆氧自由基的变化。

Objective: As an important adaptation mechanism to hypoxia, erythrocytosis resulting from high altitude hypoxia maintains an adequate Oa delivery in blood.

目的：高原缺氧时红细胞增多，红细胞适度增多可以改善组织供氧，是缺氧习服-适应的重要机制之一。

An O2-labile protein (hypoxia-inducible factor 1, HIF-1) has been identified that is hydroxylated and degraded under normoxic conditions but actie in hypoxia, where it enhances Epo gene transcription resulting in eleated hemoglobin leels and O2 capacity of the blood. The stimulation of Epo production at lowered arterial O2 tension can be maladaptie, if erythrocytosis deelops such as seen in high altitude habitants.

此途径因提高了体内血红蛋白水平，加强了epo基因转录和氧运输能力。epo 在动脉低氧情况下的产生使机体不适应－－这种情况就如同世居高原人群中的细胞因子发生变化一样。

The acute altitude hypoxia and fulminating altitude hypoxia is one of the most harmful environmental factors for pilots.

在现代航空中，虽然有良好的密封增压座舱、供氧防护装备等条件，但由于飞机密封增压座舱失密封、面具佩戴不严或供氧系统故障等，仍然会引起飞行人员不同程度的缺氧，从而可能危机健康。

Objective To investigate the effect of acute hypoxia on blood pressure and heart rate in mice after hypoxia preconditioning.

目的 探讨经缺氧预处理后，急性低氧对大鼠血压和HR的影响。

High expression of thesegenes correlate to hypoxia is the intrinsic factor of the hypoxia adaptation of zokors.

这些与低氧相关基因的高表达是甘肃鼢鼠适应低氧环境的内因。

SW480 and SW620 cells were also used to study the gene regulation with high carbohydrate intake, where it was shown that during glycolysis eight genes, HK1 (nuclear gene encoding mitochondrial protein, transcript variant 1), GPI, GAPD (glyceraldehyde-3-phosphate dehydrogenase), PGK1 (phosphoglycerate kinase 1), PGK2 (phosphoglycerate kinase 2), ENO2 (enolase 2), PKM2 (pyruvate kinase, muscle, transcript variant 2) and GLUT1 (facilitated glucose transporter, member 1) are over-expressed. In our study, we also found that during hypoxia of cancer tissues the resulting up-regulation of HIF-2α(hypoxia-inducible factor 2, alpha subunit) would in turn up-regulate the GLU1 gene, further activating glycolysis.

另一方面，在高碳水化合物的调控研究上，吾人也利用SW480和SW620细胞株分析证实醣解水解活化过程中，其六碳醣激酶-1(HK1)、葡萄糖磷酸异构酶、3-磷酸甘油醛脱氢酶、磷酸甘油酸激酶-1(PGK1)、磷酸甘油酸激酶-2(PGK2)、烯醇酶-2(ENO2)、丙酮酸激酶-2(PKM2)以及葡萄糖输送蛋白-1(GLUT1)等共有8个基因是连续上升的过度表现；此外，吾人也发现当癌细胞在缺氧的组织中，其缺氧转录子-2α基因(HIF-2α)表现上升后，会活化GLU1基因上升，进一步活化醣解代谢的进行。

METHODS: Serum and PMNs were separated from rats under normoxia, acute hypoxia and chronic hypoxia condition, and cell aspiration technology system was used to determine the chemotactic migration of pseudopod of PMNs induced by serum as chemotactic factor.

应用细胞微管吸吮实验技术，从单细胞角度研究在血清趋化作用下不同缺氧状态PMNs伪足生长的变化。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。