Results 111 to 120 of about 9,274 (175)
Dianci bileiqi, 1995 超高压直流线路中玻璃和瓷绝缘子意外事故分析详细列出１９７０～１９９２年间玻璃和瓷绝缘子在２５０ｋＶ、４５０ｋＶ、１５００ｋＶ直流线路中的运行数据。专门的实验结果说明了破坏机理，并测定了串中每一部件的电阻。讨论了污秽和腐蚀情况下绝缘子的击穿及其热电压图...
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Gaoya dianqi, 1973 PK型断路器是一种空气断路器。自132千伏至765千伏已形成完整的系列,并分别在美国电力网、加拿大魁北克电站投入运行。 断路器的基本部件是一个“开断单元”。它由主断口灭弧室与辅助断口灭孤室组成,是担负分、合输电线路的主要部分。目前,世界各国大多采用若干个“开断单元”串联以实现超高压输电。“开断单元”的主,辅灭孤室的剖视图见图1所示。
彭光军, 王力法
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Zhongguo cuzhong zazhi目的 探讨急性缺血性卒中（acute ischemic stroke，AIS）患者就医决策延迟的重要危险因素，构建列线图预测模型，为早期识别就医决策延迟高风险患者提供个体化评估工具。 方法 前瞻性纳入2024年9月—2025年4月深圳市3家医院的AIS患者，根据其症状出现或被识别至首次决定寻求医疗帮助的时间间隔分为延迟组（＞1 h）与未延迟组（≤1 h）。采用多因素logistic回归分析识别就医决策延迟的独立影响因素，并构建列线图预测模型。通过ROC曲线、Hosmer-Lemeshow拟合优度检验、
班悦，胡敏莉，李芝慧，邓丽萍，谢小华BAN Yue, HU Minli, LI Zhihui, DENG Liping, XIE Xiaohua
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[Establishment of a nomogram model for the early diagnosis of childhood sepsis]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2022 Teng QL, Ju M, Liu ZY, He XC.
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Integrated single-cell and transcriptome sequencing to construct a prognostic model of M2 macrophage-related genes in prostate cancer [PDF]
ObjectiveTo explore the prognostic value of M2 macrophage-related genes in prostate cancer (PCa), aiming to predict tumor prognosis more accurately and enable personalized treatment.Methods·RNA sequencing (RNA-seq) data of PCa were downloaded from The ...
FENG Chengling, HAN Bangmin, TANG Kairan
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Evaluation of machine learning prediction of altered inflammatory metabolic state after neoadjuvant therapy for breast cancer [PDF]
Objective·To develop a machine learning approach for early identification of metabolic syndromes associated with inflammatory metabolic state changes in breast cancer patients after neoadjuvant therapy, using common laboratory and transthoracic ...
CHAI Yezi +7 more
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Construction of a nomogram model for predicting infectious intrapartum fever. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Lu B +5 more
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Effect of canagliflozin combined with alfacalcidol in the treatment of elderly type 2 diabetes mellitus with osteoporosis [PDF]
Objective To investigate the clinical efficacy of canagliflozin combined with alfacalcidol in the treatment of elderly patients with type 2 diabetes mellitus（T2DM）and osteoporosis. Methods A randomized controlled trial design was adopted.
HUANG Yi*，JIANGXiong，PENG Jun，GUI Xiao，LIU Shuang，LI Peng，LI Yanling，JIANG Meiling
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Establishment of a prediction model for major adverse cardiovascular and cerebrovascular events in prehypertensive patients [PDF]
Objective To explore the predictive efficacy of logistic regression model based on carotid artery elastic ultrasound parameters for the occurrence of major adverse cardiovascular and cerebrovascular events（MACCE ）in patients with prehypertension ...
HE Zhi,an，LAI Jiangqiong，ZHENG Tao
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Dianci bileiqi, 2011 针对现有输电线路融冰技术的缺陷,提出了一种基于线路集肤效应和电介质损耗理论的18 kV、40 kHz高频高压激励融冰方法。该方法通过提高线路融冰电流的频率来加深线路的集肤效应,使线路单位长度的电阻显著提高,即在相同的发热功率要求下可减少线路的传输电流。简要论述了除冰装置的具体构成及其线路连接运行图。根据1 000 kV特高压交流输电线路建立融冰模型,加入激励源及环境变量等一系列参数,并运用ANSYS有限元分析软件进行仿真。仿真结果表明,18 kV、40 kHz高频高压激励融冰方法具有可行性好 ...
周羽生 +5 more
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