The content of proline in the plant bodies is closely related to the converse-succession-resistant capability of the plants. In this paper, the relationship between the proline accumulation in the bodies of Populus eu...The content of proline in the plant bodies is closely related to the converse-succession-resistant capability of the plants. In this paper, the relationship between the proline accumulation in the bodies of Populus euphratica and the change of groundwater level is analyzed by taking Popu-lus euphratica, the main community-building species of the desert riparian forests along the Tarim River, as the research object. The research results show that the accumulation of proline in the bodies of Populus euphratica is closely related to the change of groundwater level gradient under drought stress, it increases with the drawdown of groundwater level and the increase of moisture stress degree; the accumulation of proline in the bodies of Populus euphratica has two ex-tremely high points at the groundwater depth ranges of 3.64—5.14 m and 9.46—10.16 m. Combining the field investiga-tion and the analysis of the plots, it is considered that the groundwater level of 3.5—4.5 m is rational for the growth of Populus euphratica. The stress groundwater depth for the normal growth and the critical one for the survival of Popu-lus euphratica are below 4.5 m and 9—10 m respectively at the lower reaches of the Tarim River.展开更多
目的比较加速康复外科(enhanced recovery after surgery,ERAS)与传统围术期的麻醉管理对甲状腺手术围术期应激水平的影响。方法选择2016年5~8月择期行甲状腺手术的患者62例,男13例,女49例,年龄18~65岁,ASAⅠ或Ⅱ级,随机分为ERAS组(n=29...目的比较加速康复外科(enhanced recovery after surgery,ERAS)与传统围术期的麻醉管理对甲状腺手术围术期应激水平的影响。方法选择2016年5~8月择期行甲状腺手术的患者62例,男13例,女49例,年龄18~65岁,ASAⅠ或Ⅱ级,随机分为ERAS组(n=29)和对照组(C组,n=33)。ERAS组按照ERAS围术期流程操作,记录苏醒期和术后第1天VAS疼痛评分以及术后镇痛满意度评分,记录术前、术后当日和术后1d的C反应蛋白(CRP)、血皮质醇、IL-6、IL-8和TNF-α浓度。记录术后并发症的发生情况。结果苏醒期ERAS组VAS疼痛评分明显低于C组[(0.42±0.83)分vs(0.95±1.16)分,P<0.05],术后1dERAS组VAS疼痛评分明显低于C组[(1.90±1.21)分vs(2.73±1.40)分,P<0.05]。ERAS组术后第1天镇痛满意度评分明显高于C组(P<0.05)。术后当日和术后1dERAS组CRP浓度明显低于C组;C组CRP浓度明显高于术前(P<0.05)。两组术后咽痛、声嘶和饮水呛咳等并发症的发生率差异无统计学意义。结论 ERAS围术期操作系统在甲状腺手术中的应用安全、可靠,有效提高患者的满意度,提升舒适化围术期体验,同时减轻术后疼痛,促进患者快速康复。展开更多
Rice （Oryza sativa L.） is an important food crop and requires larger amount of water throughout its life cycle as compared to other crops. Hence, water related stress cause severe threat to rice production. Drought ...Rice （Oryza sativa L.） is an important food crop and requires larger amount of water throughout its life cycle as compared to other crops. Hence, water related stress cause severe threat to rice production. Drought is a major challenge limiting rice production. It affects rice at morphological （reduced germination, plant height, plant biomass, number of tillers, various root and leaf traits）, physiological （reduced photosynthesis, transpiration, stomatal conductance, water use efficiency, relative water content, chlorophyll content, photosystem II activity, membrane stability, carbon isotope discrimination and abscisic acid content）, biochemical （accumulation of osmoprotectant like proline, sugars, polyamines and antioxidants） and molecular （altered expression of genes which encode transcription factors and defence related proteins） levels and thereby affects its yield. To facilitate the selection or development of drought tolerant rice varieties, a thorough understanding of the various mechanisms that govern the yield of rice under water stress condition is a prerequisite. Thus, this review is focused mainly on recent information about the effects of drought on rice, rice responses as well as adaptation mechanisms to drought stress.展开更多
文摘The content of proline in the plant bodies is closely related to the converse-succession-resistant capability of the plants. In this paper, the relationship between the proline accumulation in the bodies of Populus euphratica and the change of groundwater level is analyzed by taking Popu-lus euphratica, the main community-building species of the desert riparian forests along the Tarim River, as the research object. The research results show that the accumulation of proline in the bodies of Populus euphratica is closely related to the change of groundwater level gradient under drought stress, it increases with the drawdown of groundwater level and the increase of moisture stress degree; the accumulation of proline in the bodies of Populus euphratica has two ex-tremely high points at the groundwater depth ranges of 3.64—5.14 m and 9.46—10.16 m. Combining the field investiga-tion and the analysis of the plots, it is considered that the groundwater level of 3.5—4.5 m is rational for the growth of Populus euphratica. The stress groundwater depth for the normal growth and the critical one for the survival of Popu-lus euphratica are below 4.5 m and 9—10 m respectively at the lower reaches of the Tarim River.
文摘目的比较加速康复外科(enhanced recovery after surgery,ERAS)与传统围术期的麻醉管理对甲状腺手术围术期应激水平的影响。方法选择2016年5~8月择期行甲状腺手术的患者62例,男13例,女49例,年龄18~65岁,ASAⅠ或Ⅱ级,随机分为ERAS组(n=29)和对照组(C组,n=33)。ERAS组按照ERAS围术期流程操作,记录苏醒期和术后第1天VAS疼痛评分以及术后镇痛满意度评分,记录术前、术后当日和术后1d的C反应蛋白(CRP)、血皮质醇、IL-6、IL-8和TNF-α浓度。记录术后并发症的发生情况。结果苏醒期ERAS组VAS疼痛评分明显低于C组[(0.42±0.83)分vs(0.95±1.16)分,P<0.05],术后1dERAS组VAS疼痛评分明显低于C组[(1.90±1.21)分vs(2.73±1.40)分,P<0.05]。ERAS组术后第1天镇痛满意度评分明显高于C组(P<0.05)。术后当日和术后1dERAS组CRP浓度明显低于C组;C组CRP浓度明显高于术前(P<0.05)。两组术后咽痛、声嘶和饮水呛咳等并发症的发生率差异无统计学意义。结论 ERAS围术期操作系统在甲状腺手术中的应用安全、可靠,有效提高患者的满意度,提升舒适化围术期体验,同时减轻术后疼痛,促进患者快速康复。
基金supported by the Department of Science & Technology, New Delhi, India
文摘Rice （Oryza sativa L.） is an important food crop and requires larger amount of water throughout its life cycle as compared to other crops. Hence, water related stress cause severe threat to rice production. Drought is a major challenge limiting rice production. It affects rice at morphological （reduced germination, plant height, plant biomass, number of tillers, various root and leaf traits）, physiological （reduced photosynthesis, transpiration, stomatal conductance, water use efficiency, relative water content, chlorophyll content, photosystem II activity, membrane stability, carbon isotope discrimination and abscisic acid content）, biochemical （accumulation of osmoprotectant like proline, sugars, polyamines and antioxidants） and molecular （altered expression of genes which encode transcription factors and defence related proteins） levels and thereby affects its yield. To facilitate the selection or development of drought tolerant rice varieties, a thorough understanding of the various mechanisms that govern the yield of rice under water stress condition is a prerequisite. Thus, this review is focused mainly on recent information about the effects of drought on rice, rice responses as well as adaptation mechanisms to drought stress.
