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Aerenchyma is typical of the stems of many aquatic plants whose leaves float at the surface of ponds and lakes, giving added buoyancy to the tissues.

通气组织在体内形成一个相互贯通的通气系统,为植物体增加浮力和支持作用。

The plant body tends to form great deal of aerenchyma under the saline-alkali habitat. The aerenchyma in three kinds of plants comes into being near the main vein and in spongy mesophyll of the leaf, in parenchyma tissue around of vascular bundle of the petiole, and in parenchyma tissue of cortex of the stem.

盐碱诱导下植物体趋向形成大量的通气组织,以对抗盐碱生境下的乏氧环境,三种植物的通气组织一般存在于叶片的主脉附近,叶柄的维管束周围的薄壁组织中,以及茎的皮层薄壁细胞之中。

Hydrophytes show certain adaptations to such habitats, notably development of aerenchyma, reduction of cuticle, root system, and mechanical and vascular tissues, and divided leaves.

水生植物表现出适应水生的特性:具有发达的通气组织;表皮、根系、机械组织、维管组织退化;叶片分裂;叶片、根和茎中均具有通气道或气腔。

Aims We investigated aerenchyma formation in stems of riparian plants Arundinella anomala and Salix variegate as affected by addition of ethylene and a-naphthalene acetic acid under non-flooded conditions in order to ascertain whether phytohormone ethylene and auxin are direct stimuli for aerenchyma formation in flooded plants.

为了探究乙烯和α-萘乙酸是否是水淹环境条件下植物体内通气组织形成的直接原因,对三峡库区岸生植物野古草和秋华柳在无水淹环境条件下施加乙烯利和α-NAA后茎中通气组织的形成情况进行了研究。

When intermitted aeration was used, a dry cell weight of 2.62 g/L and an ethanol concentration of 28.9 g/L were achieved after 38 hrs of cultivation. Another fermentation was performed by feeding a 275 g/L glucose solution.

酦酵过程中,以间歇通气式批次酦酵培养(每通气3分钟停止通气10秒钟),经过38小时后,菌体乾重可达到2.62 g/L,酒精浓度为

When initial NO3--N was leached, the correlation coefficients between soil initial NO3--N and mineral N extracted by CaCl2 before aerobic incubation with raygrass nitrogen uptake were decreased to 0.613 and 0.607, respectively, and both reached 5% significantly level. However, the correlation coefficients between mineralizable N extracted by aerobic incubation, soil initial mineral N and mineralizable N extracted by aerobic incubation, N0 and soil initial mineral N and N0 with raygrass nitrogen uptake were raised obviously, and all reached 5% and 1% significant level.

以不包括土壤起始NO3--N盆栽试验植物吸氮量为参比,通气培养前CaCl2淋洗起始NO3--N和起始矿质氮与五期黑麦草地上部氮素累积量间的相关性尽管有所降低,但相关性仍达5%显著水平,相关系数分别为0.613和0.607;而通气培养30周矿化氮素、土壤起始矿质氮+通气培养30周矿化氮素、N0及N0+起始矿质氮与五期黑麦草地上部吸氮量的相关系数却明显提高,相关系数分别为0.718,0.782,0.688 和0.640,均达5%或1%显著水平。

The results indicated that when initial NO3--N was not leached, soil initial NO3--N and mineral N extracted by CaCl2 before aerobic incubation were closely related with raygrass nitrogen uptake, the correlation coefficients were 0.856 and 0.862, respectively, both reached at 1% significant level. When initial NO3--N was leached, it was no good relationship between mineralizable N extracted by aerobic incubation, soil initial mineral N and mineralizable N extracted by aerobic incubation, N0 and soil initial mineral N and N0 with raygrass nitrogrn uptake, the correlation coefficients were 0.410, 0.553, 0.492 and 0.419, respectively, indicating that the poor effects of mineralizable N on reflecting soil N capacity were influenced and disturbed by initial nitrate.

以包括土壤起始NO3--N盆栽试验植物吸氮量为参比,通气培养前CaCl2所淋洗起始NO3--N和起始矿质氮与5期黑麦草地上部氮素累积量密切相关,相关系数分别为0.856和0.862,达1%显著水平;与此相反,通气培养30周所矿化氮素、土壤起始矿质氮+通气培养30周矿化氮素、氮素矿化势(N0)及N0+起始矿质氮与5期黑麦草地上部氮素累积量间无显著相关关系,相关系数分别仅为0.410、0.553、0.492和0.419。

Three hours OLV does not cause injury of the nondependent lung, yet six hours OLV leads to injury of the nondependent lung. Low-dose ALM would not deteriorate the injury of the nondependent lung.

OLV 3hr不会造成无通气肺组织的损伤,而OLV 6hr则引起无通气肺组织的损伤:小剂量ALM在提高HPV反应,改善OLV期间动脉氧合的同时,并不加重无通气肺组织的损伤。

The FiO2, PaO2, PaCO2 and OI, before and after treatment of HFOV or CMV, were observed, and clinical effects, ventilation time, hospital stay and cost spent were compared. Results The patients' condition in HFOV group significantly improved within 24 hours, and airleak disappeared in short time without thoracentesis or closed drainage.

重症气漏并呼吸衰竭新生儿38例, 15例常频通气治疗, 23例高频震荡通气治疗,观察HFO组治疗前后吸入氧浓度(FiO2)、动脉血氧分压(PaO2)、动脉血二氧化碳分压(PaCO2)及氧合指数的变化及临床疗效,并与CMV组机械通气时间、住院天数及医疗费用进行比较。

BACKGROUND: Noninvasive positive-pressure ventilationwith pressure support-ventilation and positive end-expiratorypressure are effective in providing oxygenation during intubationin hypoxemic patients.

背景:配合压力支持通气和呼气末正压通气的无创正压通气能有效地为插管时存在低氧的病人提供氧气。

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