Research status and development trends of evaporative cooling air-conditioning technology in data centers

This paper systematically describes the technical principles,evaluation indicators,system forms and research progress of air-side evaporative cooling air conditioning systems,water-side evaporative cooling air conditioning systems and freon-side evaporative cold coagulation heat air conditioning systems of Data center.In order to reduce the energy consumption of the refrigeration and air-conditioning system in the Data center,the applica-tion conditions and scenarios of the different forms of evaporative cooling air-conditioning systems should be considered comprehensively.Therefore,it is very important that the renewable energy-dry air can be used to the greatest extent.These efforts would contribute to China’s 2030"Carbon Peak"and 2060"Carbon Neutral."

无充气颏下前庭联合入路腔镜甲状腺手术治疗甲状腺乳头状癌41例临床分析

目的探讨无充气颏下前庭联合入路腔镜甲状腺手术治疗甲状腺乳头状癌的可行性和安全性。方法回顾性分析2020年11月至2021年4月在浙江大学医学院附属邵逸夫医院头颈外科接受无充气颏下前庭联合入路手术的41例甲状腺乳头状癌患者的临床和病理学资料。男性5例,女性36例;年龄(35.0±8.7)岁(范围:19~58岁)。甲状腺乳头状癌最大径为(7.6±5.8)mm(范围:2~30 mm)。颏下做1个长2.0 cm横切口为观察孔,置入1个10 mm套管和特制悬吊拉钩,口腔前庭内靠唇侧做2个长5 mm纵行切口为操作孔,各置入5 mm套管,操作方向为从头侧向尾侧。术后第1天和术后1个月检测下唇部及颏部感觉。记录手术时间、住院时间、清扫淋巴结数目及术后并发症。结果所有病例均顺利在腔镜下完成手术,无中转开放手术。手术时间为(99±34)min(范围:50~180 min),术后住院时间为(3.4±2.2)d(范围:2~16 d)。清扫的中央区淋巴结数目为6(5)枚[M(IQR)](范围:1~25枚)。随访截至术后1个月,术后暂时性甲状旁腺功能减退2例,喉返神经损伤1例,继续随访评估是否为暂时性损伤。术后淋巴瘘、皮下积液及皮下局部红肿各1例,经过保守治疗均痊愈。下唇部轻微麻木1例,于术后1个月恢复正常。无永久性甲状旁腺功能减退发生,无术后出血发生,无颏部麻木发生。结论无充气颏下前庭联合入路腔镜甲状腺手术治疗甲状腺乳头状癌是可行的,有临床应用价值。