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HVAC风量及回风比例对电动汽车采暖能耗的影响分析 被引量:2
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作者 汪爽 雍安姣 +2 位作者 俞志伟 付永宏 张林波 《机电信息》 2022年第22期46-51,共6页
空调系统能耗是电动汽车续航里程缩减严重的重要因素,降低能耗可提升整车实际续航里程。为评估风量以及回风比例对乘员舱采暖速率和采暖能耗的影响,将以PTC为采暖部件的电动汽车作为分析对象开展相关研究工作,分析了不同环境温度下风量... 空调系统能耗是电动汽车续航里程缩减严重的重要因素,降低能耗可提升整车实际续航里程。为评估风量以及回风比例对乘员舱采暖速率和采暖能耗的影响,将以PTC为采暖部件的电动汽车作为分析对象开展相关研究工作,分析了不同环境温度下风量从1挡变化到7挡乘员舱升温速率,计算了不同回风比例下的最优档位并评估了其对续航里程的提升作用。研究结果可为电动汽车自动空调控制策略开发以及用户用车习惯养成等方面提供指导与参考。 展开更多
关键词 电动汽车 采暖能耗 回风比例 风量
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Is combined extra-hepatic bile-duct resection justified for advanced gallbladder carcinoma? 被引量:1
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作者 Jun-Ke Wang Wen-Jie Ma +4 位作者 Zhen-Ru Wu Qin Yang Hai-Jie Hu Fei Liu Fu-Yu Li 《Gastroenterology Report》 SCIE EI 2019年第6期426-433,I0002,共9页
Background:Whether the extra-hepatic bile duct(EHBD)should be routinely resected for gallbladder carcinoma(GBC)remains controversial.The current study aimed to determine the clinical impact of combined EHBD resection ... Background:Whether the extra-hepatic bile duct(EHBD)should be routinely resected for gallbladder carcinoma(GBC)remains controversial.The current study aimed to determine the clinical impact of combined EHBD resection during curative surgery for advanced GBC.Methods:In total,213 patients who underwent curative surgery for T2,T3 or T4 GBC were enrolled.The clinicopathological features were compared between the patients treated with EHBD resection and those without EHBD resection.Meanwhile,univariable and multivariable Cox-proportional hazards regression models were used to identify risk factors for overall survival(OS).Results:Among the 213 patients identified,87(40.8%)underwent combined EHBD resection.Compared with patients without EHBD resection,patients with EHBD resection suffered more post-operative complications(33.3%vs.21.4%,P=0.046).However,the median OS of the EHBD resection group was longer than that of the non-EHBD resection group(25 vs.11 months,P=0.008).Subgroup analyses were also performed according to tumor(T)category and lymph-node metastasis.The median OS was significantly longer in the EHBD resection group than in the non-EHBD resection group for patients with T3 lesion(15 vs.7 months,P=0.002),T4 lesion(11 vs.6 months,P=0.021)or lymph-node metastasis(12 vs.7 months,P<0.001).No survival benefit of EHBD resection was observed in GBC patients with T2 lesion or without lymph-node metastasis.T category,lymph-node metastasis,margin status,pre-operative CA19-9 level and EHBD resection were identified as independent prognostic factors for OS of patients with advanced GBC(all P values<0.05).Conclusions EHBD resection can independently affect the OS in advanced GBC.For GBC patients with T3 lesion,T4 lesion and lymph-node metastasis,combined EHBD resection is justified and may improve OS. 展开更多
关键词 gallbladder carcinoma curative surgery extra-hepatic bile-duct resection overall survival
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