Results 11 to 20 of about 11,353 (118)
中西医结合护理, 2023 intraoperative hypothermia is a common complication in hepatectomy for liver cancer. This paper analyzed influencing factors of intraoperative hypothermia in hepatectomy for primary liver cancer, summarized nursing countermeasures, and provided reference
HU Ruidan (胡瑞丹) +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2012 为了进一步说明模拟自然界温度渐降低温胁迫的冷害作用的机理，以黄瓜品种“津优1号”为试材，以直降低温胁迫（昼温/夜温= (10±0. 5)℃/(5±0. 5)℃）为对照CK，常温（昼温/夜温= (25±0. 5)℃/(18±0. 5)℃）为对照CK1，研究渐降低温胁迫（即以1℃ • h-1的平均降温速度进行降温处理）对黄瓜幼苗叶绿体膜相关指标的影响.结果表明：(1)Ca2+-ATPase和Mg2+-ATPase活性在低温胁迫过程中呈先上升后下降趋势，随着低温胁迫的进程 ...
ZHENGShan-shan(郑姗姗) +5 more
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Dianci bileiqi, 2023 低温环境易造成绝缘子运行故障且低温风雪给人工运维带来巨大困难，图像识别正在成为低温环境绝缘子监测关键辅助手段，但低温环境对绝缘子视频图像识别影响研究缺乏。笔者以低温风雪环境支柱绝缘子为研究对象，分析了低温风雪环境对绝缘子图像识别的影响因素，主要包括：1)低温风雪环境是典型高椒盐噪声，需要对支柱绝缘子图像进行滤波降噪，提升图像质量；2)应充分采用考虑保留支柱绝缘子细节的滤波算法来进行图像识别分析；3)视频传感器建议选择CMOS传感器的低温系列，配套低温电池并配备低温环境除雾设备 ...
周文 +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2014 利用1953~2013年宁波地区逐日气温观测资料，根据1981~2010年新30 a标准，分析了宁波市年平均气温、季平均气温、极端最高气温、极端最低气温、高温日数、低温日数等要素的变化趋势和特征，在此基础上统计了暖冬、冷冬、酷暑、凉夏的出现次数.通过统计分析发现：近60 a来宁波市的年平均气温、季平均气温、极端最高气温、极端最低气温都表现出增暖趋势，增温最明显的时段集中在20世纪90年代至今，春季增温最为明显，冬季次之，夏季增温幅度最小；极端最低气温升温速率比极端最高气温略快，高温日数增加，低温日数减少，
GUSinan(顾思南) +3 more
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Gaoya dianqi, 2021 为掌握SF6气体的低温放电特性,保证低温环境下SF6气体设备的运行可靠性。文中开展了-50℃至20℃温度范围内,半球头棒板电极下SF6气体的工频击穿试验。同时测量了降温过程中SF6气体的气压随温度的变化。获得了稍不均匀电场中绝对气压0.7 MPa和0.5 MPa的SF6气体的放电电压随温度的变化规律。发现当温度从20℃降低到-50℃时,SF6气体的放电电压和气压均呈现先缓慢降低,再迅速降低趋势,放电电压下降趋势的拐点与气压下降趋势的拐点基本一致,计算发现该拐点温度等于SF6气体的液化温度 ...
王远东 +6 more
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Integrative Conservation, EarlyView.This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang +11 more
wiley +1 more source
Wildlife Letters, EarlyView.Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin +2 more
wiley +1 more source
Gongye shui chuli, 2021 针对冬季温度低导致的脱氮效率下降问题，建立上流式固定床生物膜反应器（UFBR），并与传统活性污泥反应器（SASR）低温时的反硝化效果、微生物特性及群落结构进行比较，分析低温下生物膜的形成。经过160 d先逐步降温再提升硝酸盐进水负荷（NLR）的连续运行，UFBR表现出耐受低温能力强、脱氮效果优于SASR的特点；8℃下，UFBR的硝酸盐去除负荷（NRR）达到0.32 kg/（m3·d），比SASR高2倍多。低温下活性污泥产生大量胞外聚合物，发生污泥膨胀。而UFBR生物膜可分泌更多蛋白质 ...
赵楠楠 +5 more
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Wildlife Letters, EarlyView.Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu +5 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source