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Air Elite 4h chemical oxygen breathing apparatus are oxygen Health Self-contained breathing apparatus cycle will provide 4 hours of operating time, the supply of breathing air capacity of 4800 liters.

Air Elite 4h 化学氧气呼吸器是生氧式自循环呼吸器,可提供4小时的作业时间,供应的呼吸空气容量达4800升。

OBJECTIVE: To study the effects of prolonged 75% oxygen exposure on the expression of vascular endothelial growth factor and its receptors (VEGFR1 and VEGFR2) in the neonatal rat lungs and to elucidate the effects of prolonged exposure of high concentration of oxygen on lung vascular development and its relationship with bronchopulmonary dysplasia.

目的:研究持续吸入75%氧对新生大鼠肺血管内皮生长因子(vascular endothelial growth factor,VEGF)及其受体(VEGFR1和VEGFR2)表达的影响,探讨较高浓度吸氧对肺血管发育的影响及与支气管肺发育不良(bronchopulmonary dysplasia,BPD)的关系。

TiO2 is known to exist in three distinct structures: two tetragonal phase for anatase and rutile and a third orthornombic phase for brookite. Rutile has the most stable structure and physical and chemical properties. In rutile structure oxygen cavities move quickly so that rutile has better gas sensing respond and become a chief material use for oxygen gas sensors.

其中金红石结构是最为稳定的晶型,不但具有最为稳定的物理、化学性能,而且在金红石结构中,晶格中氧空位的迁移率较高,因而TiO_2金红石结构气敏响应效应较好,从而使金红石结构TiO_2氧化物材料成为氧敏传感器的首选材料之一。

Once the higher the concentration of carboxyhemoglobin, hemoglobin to carry oxygen to the tissues of the function will be hindered, and the impact of the shortage of oxygen supply the most sensitive central nervous system and cardiac function, caused by hypoxia, which lead to poisoning symptoms .

一旦碳氧血红蛋白浓度升高,血红蛋白向机体组织运载氧的功能就会受到阻碍,进而影响对供氧不足最为敏感的中枢神经和心肌功能,造成组织缺氧,从而使人产生中毒症状。

Automobile exhaust the highest level of carbon monoxide, it can enter through the respiratory tract of gestation, the blood was absorbed, combined with hemoglobin to form carboxyhemoglobin, lowering blood oxygen, blood weaken the oxygen supply of human tissues, resulting in tissue hypoxia, which led to headaches and other symptoms, or suffocation.

汽车尾气中一氧化碳的含量最高,它可经呼吸道进入肺泡,被血液吸收,与血红蛋白相结合,形成碳氧血红蛋白,降低血液的载氧能力,削弱血液对人体组织的供氧量,导致组织缺氧,从而引起头痛等症状,重者窒息死亡。

The oxygen is the metals that the water supply main causticity the material boiler of the system and boiler would decay the thermodynamic energy system for aquatic deliquescence oxygen.

氧是给水系统和锅炉的主要腐蚀性物质,锅炉给水中的溶解氧会腐蚀热力系统的金属。

CGA has established the definition of an oxygen-enriched atmosphere as one containing at least 23% oxygen.

CGA将至少含有23%的氧的空气定义为富氧空气。

Because chronic obstructive inflammation of airway severely influences the ventilation and exchange function of COPD patients, The motor ability of patients is limited .Despnoea and fatigue limit patients to sedentary,because of this, skeletal muscle began to analosis,oxygen uptaking capacity of skeletal muscle descends,and concentration of chondriosome degrades.Function limitation of skeletal muscle causes oxygen needs increase,so vicious cycle emerges,and further to restrict patient's respiratory and motor function.

由于气道的慢性炎症性阻塞,严重影响了慢阻肺患者的通气及换气功能,使得患者的运动能力明显受限,因喘息和疲劳而限制了患者的运动能力,使患者出现久坐,由此出现骨骼肌的萎缩,骨骼肌摄氧能力下降,线粒体氧浓度降低,骨骼肌的功能受限又会引起通气量不足,进而引起低氧血症和高碳酸血症,使患者的摄氧需求增加,由此出现恶性循环,进一步制约了患者的呼吸和运动功能。2001年正式提出肺康复作为中重度COPD患者稳定期非药物治疗的首选管理方案。

Therefore this work mimicked this process for the first time by using macrocyclic complex. The quantity of absorbed oxygen and the absorption rate of oxygen were determined.

本文首次用大环配合物对这一过程进行了模拟,并测定了氧化反应中的吸氧量和吸氧速率常数。

The oxidation of PUFA(poly-unsaturated fatty acid) in emulsion with constant surface oxygen pressure and agitating oxygen compensation was studied.

研究了恒表面氧压搅拌式有氧补偿条件下乳状液中多不饱和脂肪酸的氧化。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。