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生菜再生苗耐高温生理基础 被引量:9
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作者 高丽红 李式军 《南京农业大学学报》 CAS CSCD 北大核心 1994年第2期23-27,共5页
研究了生菜再生苗形成及其耐高温生理.结果表明:与实生苗相比,在盛夏生长过程中,再生苗体内具有较高的保护酶系统活性,根尖组织中含有较高的吲哚乙酸(IAA)、异戊烯基腺嘌呤(iPA),较低的叶片温度、气孔阻力和较高的蒸腾... 研究了生菜再生苗形成及其耐高温生理.结果表明:与实生苗相比,在盛夏生长过程中,再生苗体内具有较高的保护酶系统活性,根尖组织中含有较高的吲哚乙酸(IAA)、异戊烯基腺嘌呤(iPA),较低的叶片温度、气孔阻力和较高的蒸腾强度。试验表明,残茬中贮存蛋白量与再生苗形成有关。残茬根系内源激素水平可能是诱发再生苗形成的又一重要因子. 展开更多
关键词 再生苗 高温生理 莴苣
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经动脉导管灌注高温生理盐水肝段热凝固的可行性评估 被引量:1
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作者 叶强 郑家平 +5 位作者 汝复明 张家兴 俞翔耀 童乾纲 奚顺法 顾伟中 《世界肿瘤杂志》 2006年第1期1-4,F0002,共5页
目的 评价经动脉导管灌注高温生理盐水肝段热凝固的效果。方法 实验猪12头,随机分为实验组(n=6)和对照组(n=6)。实验组选用球囊导管阻断肝段动脉血流进行热灌注,对照组高热灌注时不阻断肝动脉血流。根据热灌注的温度每组再随机均... 目的 评价经动脉导管灌注高温生理盐水肝段热凝固的效果。方法 实验猪12头,随机分为实验组(n=6)和对照组(n=6)。实验组选用球囊导管阻断肝段动脉血流进行热灌注,对照组高热灌注时不阻断肝动脉血流。根据热灌注的温度每组再随机均等分为45℃、50℃、55℃(导管流出温度)3个亚组,每亚组各2头。热灌注14d,将实验猪全部处死,取出肝脏进行病检。结果 热灌注后2wk,12头实验猪均存活,处死实验猪,取出肝脏,实验组共取得四个热凝固灶,50℃、55℃亚组各两个。病灶局限于目标肝段,呈契形,尖端指向肝门,基底远高肝门,与邻近肝段分界清楚,由内向外见三层结构,分别为凝固坏死区、炎性反应区和纤维化区。对照组和试验组45℃亚组肝脏未见典型热凝固坏死。结论 经球囊导管阻断肝动脉血流,高温灌注高于50℃生理盐水,并维持10min,可使目标肝段发生彻底凝固性坏死。 展开更多
关键词 热灌注 肝癌 热凝固坏死 病理学 经动脉导管灌注 高温生理盐水 肝段热凝固
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高温生理盐水局部灌注兔大脑皮层抑制青霉素诱导癫痫的研究
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作者 张云强 李玉 +3 位作者 王进昆 杨智勇 及时雨 孙志宏 《昆明医学院学报》 2007年第6期89-94,共6页
目的探讨高温生理盐水局部灌注兔大脑皮层能抑制青霉素诱导癫痫发作.方法72只兔3组(n=24):假手术(S)组,高温(65℃)灌注(HP)组,常温(23℃)灌注组(OP).于2 d、3 d、7 d和30d观察各组灌注后毁损部位组织形态病理改变和超微结构改变,评价运... 目的探讨高温生理盐水局部灌注兔大脑皮层能抑制青霉素诱导癫痫发作.方法72只兔3组(n=24):假手术(S)组,高温(65℃)灌注(HP)组,常温(23℃)灌注组(OP).于2 d、3 d、7 d和30d观察各组灌注后毁损部位组织形态病理改变和超微结构改变,评价运动功能障碍.另将72只兔分3组(n=24):假手术(S)组:高温(65℃)灌注(HP)组,未灌注(NHP)组,于0 h、2 h、6 h、24 h观察各组EEG的变化和测定海马组织的GABA,Glu含量,评价高温生理盐水局部灌注抑制癫痫发作的有效性.结果(1)行为学和EEG观察:高温生理盐水局部灌注使癫痫发作平均在2 min内停止,且EEG显示尖波,棘波消失;(2)病理改变:HP组皮层灌注区浅层可见有变性,轻度局部脑水肿,软膜下少量出血,但深部未见异常.电镜观察:浅层可见神经细胞肿胀或固缩,甚至出现胞浆胞核的溶解,树突、线粒体肿胀,轴突髓鞘苍白、偶有脱髓鞘现象.深层结构未见明显异常.OP组和S组未见明显异常;(3)S组海马组织GAGA和Glu含量在各时间段基本无变化.HP组GABA在各时间段逐渐增加,而Glu含量逐渐减少,以2 h改变最为明显,与S组、NHP组比较均P<0.05,有统计学意义.NHP组0 h的GABA含量明显较S组低,而Glu含量却明显高于S组,NHP组在2 h内GABA和Glu含量变化不明显,6 h和24 hGABA有所上升,Glu略有下降.结论高温生理盐水局部灌注可以抑制青霉素诱导的癫痫发作. 展开更多
关键词 高温生理盐水 局部灌注 大脑皮层 癫痫
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高温生理盐水胸腔灌洗治疗恶性胸腔积液26例报告 被引量:1
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作者 王西得 吕玉萍 《山东医药》 CAS 北大核心 2003年第9期60-60,共1页
关键词 恶性胸腔积液 高温生理盐水 胸腔灌洗 治疗
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生理高温对佛州侧耳超氧物歧化酶的影响 被引量:9
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作者 吴国荣 陆长梅 +3 位作者 周长芳 顾龚平 张贞渝 魏锦城 《菌物系统》 CAS CSCD 北大核心 2000年第3期371-376,共6页
佛州侧耳(PleurotusfloridanusSinger)子实体在生理高温(32±1℃)条件下,O2吸收速率和超氧阴离子(O-2)产生的速率增加;脂质过氧化产物丙二醛(MDA)的积累增多。超氧物歧化酶(SOD)活性升高;过氧化氢酶(CAT)和过氧化物... 佛州侧耳(PleurotusfloridanusSinger)子实体在生理高温(32±1℃)条件下,O2吸收速率和超氧阴离子(O-2)产生的速率增加;脂质过氧化产物丙二醛(MDA)的积累增多。超氧物歧化酶(SOD)活性升高;过氧化氢酶(CAT)和过氧化物酶(POD)的活性相应地发生变化;放线菌素D抑制生理高温下SOD活性的升高;O2-清除剂甘露醇和外源SOD都影响生理高温对SOD的诱导效应。表明该侧耳在生理高温条件下SOD酶活性激应性的升高是O2-参与了SOD基因表达的调控,促进酶蛋白的合成。 展开更多
关键词 佛州侧耳 生理高温 SOD 食用菌 活性氧
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“真止渴”饮料对高温环境中实验动物的影响研究 被引量:1
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作者 刘绵林 覃红浪 +1 位作者 梁宗燊 胡万达 《工业卫生与职业病》 CAS CSCD 1995年第5期268-271,共4页
给动物灌服一种以中草药为原料配制的解暑饮料“真止渴”浓缩液作实验,并以动物灌服白开水作对照,将动物置于35℃以上的高温环境中,观察肛温、心率、血清谷丙转氨酶(SGPT)、钾(K+)、钠(Na+)和耗氧量的变化及对致死... 给动物灌服一种以中草药为原料配制的解暑饮料“真止渴”浓缩液作实验,并以动物灌服白开水作对照,将动物置于35℃以上的高温环境中,观察肛温、心率、血清谷丙转氨酶(SGPT)、钾(K+)、钠(Na+)和耗氧量的变化及对致死温度(43℃)的耐受时间等。结果表明该饮料对肛温调节影响不明显,但能维持心率平稳,提高心脏的代偿能力;抑制热环境引起的SGPT增高;有助于水盐代谢的平衡,明显提高小白鼠对致死温度的耐受能力;也能降低小白鼠的耗氧量;该品安全无毒性。 展开更多
关键词 饮料 高温生理 防暑降温 解暑饮料 动物实验
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转基因SOD,POD高表达烟草幼苗抗热性研究 被引量:8
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作者 刘明求 刘齐元 +2 位作者 丁小维 侯思名 刘飞虎 《云南农业大学学报》 CAS CSCD 2005年第5期620-623,共4页
生理高温(38±1)℃处理转基因烟草品系及非转基因品系的幼苗,测定其SOD,丙二醛、可溶性糖含量、电导率和生物量等指标。结果表明,转基因品系SOD的活性更强,丙二醛的含量更低,生物量受到的影响更小。由此认为,转基因烟草品系幼苗比... 生理高温(38±1)℃处理转基因烟草品系及非转基因品系的幼苗,测定其SOD,丙二醛、可溶性糖含量、电导率和生物量等指标。结果表明,转基因品系SOD的活性更强,丙二醛的含量更低,生物量受到的影响更小。由此认为,转基因烟草品系幼苗比非转基因品系的抗热性更强,其中转基因POD高表达烟草品系的抗热性最强。研究结果表明通过转基因方法提高植物的抗热性是可行的。 展开更多
关键词 生理高温 转基因烟草 抗热性 SOD POD
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Research Progress of Heat-tolerance of Brassica campestris ssp. Chinensis 被引量:5
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作者 赵晓东 张景云 +1 位作者 范淑英 缪南生 《Agricultural Science & Technology》 CAS 2013年第2期248-253,共6页
Brassica campestris ssp. chinensis, also known as non-heading Chinese cabbage, is an important vegetable widely distributed in southern China. High temperature is the most common adversity factor in vegetable producti... Brassica campestris ssp. chinensis, also known as non-heading Chinese cabbage, is an important vegetable widely distributed in southern China. High temperature is the most common adversity factor in vegetable production, because Brassica campestris ssp. chinensis is a thermophilic vegetable, which can't well grow at high temperature. In summer and autumn, high temperature stress would prevent Brassica campestris ssp. chinensis from growing and result in poor quality of its seedlings, seriously influencing yield and quality of the vegetable in later period. In this paper, present situation and latest advances in heat resistance research of Brassica campestris ssp. chinensis in recent years were reviewed at home and abroad. The research tendency in Bassica campestris ssp. chinensis was also described, providing reference for breeding of heat-resistant Brassica campestris ssp. chinensis. 展开更多
关键词 Brassica campestris ssp. chinensis High temperature stress Morphological index Physiological and biochemical indexes Heat tolerance
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平菇死菇的原因与对策 被引量:2
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作者 李东 陆凤英 《植物医生》 1999年第5期43-44,共2页
关键词 平菇 栽培 死菇 原因 高温生理性病害
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On-Line Life Monitoring Technique for Tube Bundles of Boiler High-Temperature Heating Surface
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作者 YangDong WangZhongyuan 《Electricity》 2005年第1期12-16,共5页
High-temperature heating surface such as superheater and reheater of large-sized utility boiler all experiences a relatively severe working conditions. The failure of boiler tubes will directly impact the safe and eco... High-temperature heating surface such as superheater and reheater of large-sized utility boiler all experiences a relatively severe working conditions. The failure of boiler tubes will directly impact the safe and economic operation of boiler. An on-line life monitoring model of high-temperature heating surface was set up according to the well-known L-M formula of the creep damages. The tube wall metal temperature and working stress was measured by on-line monitoring, and with this model, the real-time calculation of the life expenditure of the heating surface tube bundles were realized. Based on the technique the on-line life monitoring and management system of high-temperature heating surface was developed for a 300 MW utility boiler. An effective device was thus suggested for the implementation of the safe operation and the condition-based maintenance of utility boilers. 展开更多
关键词 utility boiler high-temperature heating surface tube wall metal temperature CREEP life assessment on-line monitoring
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Effects of Transportation Stress during the Hot-Dry Season on Some Haematological and Physiological Parameters in Moroccan Dromedary Camels (Camelus dromedarius)
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作者 Mohammed El Khasmi Youssef Chakir +7 位作者 Fouad Riad Abdallah Safwate E1 Hassane Tahri Mohamed Farh Najia E Abbadi Rachid Abouhafs Bernard Faye 《Journal of Life Sciences》 2013年第1期13-25,共13页
The purpose of this study was to determine the effects of road transportation under heat conditions on some haematological [Ht (haematocrit), blood cells count and EOF (erythrocytes osmotic fragility)] and physiol... The purpose of this study was to determine the effects of road transportation under heat conditions on some haematological [Ht (haematocrit), blood cells count and EOF (erythrocytes osmotic fragility)] and physiological [Tr (rectal temperature), HR (heart) and RR (respiratory rates), and circulating levels of Cor (cortisol), Glu (glucose) and minerals] parameters in Moroccan dromedary camels. The animals were subjected to road transportation stressor for 2 h by truck during the hot-dry season. Blood samples were collected before loading and transport, and at the end of transport. Transportation induced a significant increase (P 〈 0.05) of erythrocytes count, Ht, EOF, Tr, HR and RR by comparison to values observed before transportation. The same stress conditions induced a significant increase (P 〈 0.05) of plasma Cor (ng/mL) and blood Glu (mM) (220 ± 30 vs. 137 ± 20, 9.7 ± 1.2 vs. 6.4 ± 1. 1 respectively) and a significant decrease (P 〈 0.05) of plasma magnesium (mM) (0.5 ± 0.1 vs. 0.9 ± 0.1) comparatively to pre-transportation values. These results indicate that road transportation associated to heat may be considered as a potent stressor which is able to induce several cellular alterations in camels. Further studies of an eventual protective role of vitamin C against haemolysis induced by transportation stress in camel are needed. 展开更多
关键词 CORTISOL dromedary camel glucose HAEMOLYSIS hot-dry season minerals transportation stress.
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再论纸地膜在番茄栽培上的优势
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《中国农技推广》 1998年第5期20-20,共1页
本栏目在第4期上就纸地膜的情况向大家作了简要说明。本期还就目前日本农户关于纸地膜与塑料地膜比较的热点问题作进一步的介绍。1纸地膜番茄苗定植成活率是塑料地膜的3倍根据日本农协海老名市支部的调查结果,使用塑料地膜定植的株... 本栏目在第4期上就纸地膜的情况向大家作了简要说明。本期还就目前日本农户关于纸地膜与塑料地膜比较的热点问题作进一步的介绍。1纸地膜番茄苗定植成活率是塑料地膜的3倍根据日本农协海老名市支部的调查结果,使用塑料地膜定植的株苗约有1/3枯死。入夏后,由于一般... 展开更多
关键词 纸地膜 塑料地膜 番茄栽培 地膜栽培 定植成活率 再论 调查结果 菌核病 高温生理 地表温度
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The Janus of macrophysiology: stronger effects of evolutionary history, but weaker effects of climate on upper thermal limits are reversed for lower thermal limits in ants 被引量:1
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作者 Sarah E. DIAMOND Lacy D. CHICK 《Current Zoology》 SCIE CAS CSCD 2018年第2期223-230,共8页
Species may exhibit similar traits via different mechanisms: environmental filtering and local adaptation (geography) and shared evolutionary history (phylogeny) can each contribute to the resemblance of traits a... Species may exhibit similar traits via different mechanisms: environmental filtering and local adaptation (geography) and shared evolutionary history (phylogeny) can each contribute to the resemblance of traits among species. Parsing trait variation into geographic and phylogenetic sources is important, as each suggests different constraints on trait evolution. Here, we explore how phylogenetic distance, geographic distance, and geographic variation in climate shape physiological tolerance of high and low temperatures using a global dataset of ant thermal tolerances. We found generally strong roles for evolutionary history and geographic variation in temperature, but essen- tially no detectable effects of spatial proximity per se on either upper or lower thermal tolerance. When we compared the relative importance of the factors shaping upper and lower tolerances, we found a much stronger role for evolutionary history in shaping upper versus lower tolerance, and a moderately weaker role for geographic variation in temperature in shaping upper tolerance when compared with lower tolerance. Our results demonstrate how geographic variation in climate and evolutionary history may have differential effects on the upper and lower endpoints of physiological tolerance. This Janus effect, where the relative contributions of geographic variation in climate and evolutionary history are reversed for lower versus upper physiological tolerances, has gained some support in the literature, and our results for ant physiological tolerances provide further evidence of this pa^ern. As the climate continues to change, the high phylogenetic conservatism of upper tolerance may suggest potential constraints on the evolution of tolerance of high temperatures. 展开更多
关键词 BIOGEOGRAPHY evolutionary history latitudinal cline macrophysiology temperature thermal tolerance.
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