查询词典 ventilation

Simultaneous measurement of CORB and COTD were performed in following situations:(1)cardiac output was varied by manipulating inotropic drugs(adrenine, dobutamine, dopamine, verapamil);(2)under six different ventilatory settings:①volume controlled ventilation with tidal volume of 12ml/kg(VCV, VT 12ml/kg);②volume controlled ventilation with tidal volume of 6ml/kg(VCV, VT 6ml/kg);③pressure controlled ventilation with tidal volume of 12ml/kg(PCV, VT 12ml/kg);④pressure controlled ventilation with tidal volume of 6ml/kg(PCV, VT 6ml/kg);⑤volume controlled ventilation with high positive end-expiratory pressure.

1经肺动脉漂浮导管CVP腔注射肾上腺素、多巴酚丁胺、多巴胺、异搏定改变动物心肌收缩力，观察注射药物前、注射药物后CORB和COTD的相关性；(2)设置5组不同的机械通气参数：①容量控制通气，潮气量12ml/kg(VCV， VT 12ml/kg)；②容量控制通气，潮气量6ml/kg(VCV， VT 6ml/kg)；③压力控制通气，潮气量12ml/kg(PCV， VT 12ml/kg)；④压力控制通气，潮气量6ml/kg(PCV，VT 6ml/kg)；⑤容量控制通气，潮气量6ml/kg，高呼气末正压，PEEP为12~15cmH2O。

Physical model of three-dimensional half axis rotor of 110 MW air inner-cooled turbo-generator was established, which included the rotor end, axial ventilation ducts and sub slot ventilation ducts. The rotating turbulence flow field was simulated numerically based on the finite volume method. The air velocity and flow rate distribution characteristics of the rotor end, axial ventilation ducts and sub slot ventilation ducts were analyzed.

建立110 MW空内冷汽轮发电机转子冷却通风道一个槽(包括端部、轴径向及副槽)的半轴向段三维物理模型，并基于有限体积法对该物理模型进行旋转湍流流场数值模拟，分析了端部、轴向段和副槽通风段的空气速度、流量分布特点。

Our country firstly put forward such design principle of Qinghai-Tibet railway engineering as "lower temperature actively, reduce the heat into the subsoil, and assure the heat stability of frozen earth for the quality stability of construction", creatively adopt such corresponding measures of frozen earth construction problem as: for the poor frozen earth developing section, line should avoid as possible;for the geology of ice at high temperature and unstable frozen earth zone, the method of bridge instead of subgrade shall be adopted;in subgradeconstruction, such facilities as heat stick, rubble ventilation subgrade , rubble ventilation berm, ventilation pipe subgrade and laying heat preservation board etc shall be adopted to raise the stability of frozen earth subgrade;during the excavation of bridge, culvert , foundation pit and scouring prevention trough, creatively adopt single-tooth knapper and solve the problem of frozen earth excavation;during the construction of bridge and culvert, durable concrete and three-step maintenance method are adopted to assure the outside and inside beauty of structure.

我国在世界上首次提出"主动降温、减少传入地基土的热量、保证多年冻土的热稳定性，从而保证修筑在上面的工程质量的稳定性"的青藏铁路工程设计原则，创造性地采取了解决冻土施工难题的相应对策：对于不良冻土现象发育地段、线路尽量绕避；对于高温极不稳定冻土区的高含冰量地质，采取"以桥代路"的办法；在路基施工中采用了热棒、片石通风路基、片石通风护道、通风管路基、铺设保温板等多项设施，提高冻土路基的稳定性；在桥涵基坑、挡水埝基槽开挖中，创造性地应用了单齿破碎器，解决了冻土开挖难题；在桥涵工程施工中，采用了耐久性混凝土，采用了三步养生法，保证了结构物内实外美。

Objective To compare the clinical efficiency of invasive mechanical ventilation with that of noninvasive bilevel positive ventilation in treatment of myasthenic crisis. Methods 24 patients with MC were managed with BiPAP and 16 with Ⅳ.

目的 比较无创性错落式正压通气(noninvasive bilevel positive ventilation， BiPAP)和有创式机械通气(Invasive mechanical ventilation，Ⅳ)治疗重症肌无力危象(myasthenic crisis， MC)的临床疗效。

In order to properly determine the ventilation scheme and to save the ventilation cost, the estimation of the ventilation effect of nonmechanical ventilation is very important.

通过对秦岭终南山特长公路隧道洞内自然风速、交通活塞风速及交通量的现场监测，收集了大量数据。

RESULTS Plasma levels of IL-8, IL-10, MMP-9 were higher at 1 h, 4 h and 6 h aortic dclamping off in continuous ventilation and the nonventilation group, and IL-8 level were significantly higher in nonventilation group compared with ventilation group, IL-10 levels were significantly higher in the ventilation group than nonventilation group after 1 h and 4 h, 6 h, TIMP-1 levels were significantly higher in the ventilation group than that in nonventilation group after 1 h and 4 h.

TIMP-1的血浆水平在术后持续升高，在术后1 h和4 h持续通气组较非通气组明显增高。血浆中TXB2水平在主动脉开放后1 h、4 h和6 h明显高于术前水平，持续通气组较非通气组水平明显降低。支气管肺泡灌洗液中IL-8、IL-10、MMP-9和TXB2 水平在主动脉开放后4 h较术前明显升高。

And has brilliant prospect due to its simple structure, good economy and energy saving performance.Based on the full scale passive solar experimental building in DUT, in which the researcher carried experiment as the main method and the CFD simulation as the minor method, the research focuses on passive ventilation formed by the Trombe wall. This paper analyzed the indoor thermo and humidity performance of passive solar building with Trombe wall, and the different ventilation patterns in different seasons, revealing the role of passive ventilation in improving indoor environment. Also the paper researched the characteristics of passive ventilation on air flow and heat transfer mechanicsms, and put forward the best control and adjusting method. Meanwhile the paper gained an empiric formula in use of calculating the natural convection heat transfer and found the key factor of influing the indoor environment.

本研究以被动式采暖降温技术为依托，采用实验和CFD数值模拟的研究方法，重点研究了新型被动式太阳房在不同气候条件下室内热湿环境的动态变化规律，分析不同季节下被动式太阳房内不同的被动式通风模式以及不同被动式通风模式在改进室内热湿环境方面的作用：揭示了特定被动式通风流动和换热特性、控制与预测方法；得到了计算被动式通风对流换热量的经验公式以及影响室内热湿环境的关键因素；了解了含有特朗贝墙体被动式太阳房的自身优势和仍待改进的方面；在实体大被动式太阳房实验技术方面积累了一定的经验。

This paper is based upon XiShan Colliery Parent Company .The data of DongQu Mine pit ventilation resistance mensuration is combined. And system theory, graph theory, ventilation network technology and computer technology are utilized. According to the reality of coalmine, we think that graph and database is incorporate in mine ventilation system. So based on this, ventilation system standard graph is founded, the tool of ventilation graph to draw is made, the ventilation network calculation is realized, the outcome of the ventilation network calculation is seen on the screen, and opaquing and inquiring of the road parameters and so on. In addition to mine ventilation drawing-database visual management system is developed.

本文基于西山煤矿总公司东曲矿〖东曲矿矿井通风网络计算机管理系统〗科研项目，结合东曲矿矿井通风阻力测定，运用系统理论、图论、通风网络技术及计算机技术，针对煤矿实际，将矿井通风系统中图形和数据库贯穿为一体，创建了通风系统标准图库并编制了通风图形绘制工具，实现了风网解算和解算结果图形显示及巷道参数的修改、查询等功能，开发了矿井通风图形数据可视化管理系统。

The paper presents the principle of dividing fire protection sections in fortes road tunnels, the principle of fire ventilation design of fortes road tunnels in segment longitudinal ventilation mode, the fire ventilation design method, the fire ventilation calculation criteria and jet fans' collocation principle of fortes road tunnels in segment longitudinal ventilation mode.

论文提出了特长公路隧道防火分区划分原则，特长公路隧道分段纵向通风模式下的火灾通风设计原则，特长公路隧道分段通风模式下的火灾通风设计方法，特长公路隧道分段通风模式下的火灾通风计算控制基准，特长公路隧道射流风机布置原则。

This study considers the effects of ventilation system using the residential facilities to the transmission mechanism of indoor aerosol in the residential quarantine period space for infective diseases. This study focuses on the effect of the design of ventilation system on the internal flow field and the removal of contaminant pollution. A computational fluid dynamics software-FLUENT 6.2 is employed to simulate the internal airflow field of the residential quarantine period space. The Carbon dioxide (CO2) is adopted as the index of contaminant source. Three layouts of ventilation system are simulated and the airspeed field, the temperature distribution, and the contaminant distribution are analyzed to find the best ventilation system for the residential quarantine period space.

本研究考虑传染性疾病在居家隔离空间使用一般家用环境控制设备时对室内的气悬感染会有何影响，本文主要分析不同通风设计时对居家隔离空间内部气流之影响，并将国内外现有的规范设计方式做一系列之比较以供参考，并以商用套装软体FLUENT6.2分析居家隔离空间内部流场分布情形，模拟中以二氧化碳（CO2）作为病患所呼出含有病菌空气的指标，模拟案例分为三种主要的通风模式，并分析速度、温度与污染物浓度分布情形，以得到最佳的居家隔离空间通风配置方式。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。