经检查176例(男52,女124)明确诊断的风湿病患者的 T 细胞亚群,结合多项细胞免疫指标分析,发现此类患者的 CD_8、CD_4、CD_3细胞均有不同程度的减低,以 CD_8细胞减低最为明显。同时有 B 细胞的升高、大颗粒淋巴细胞的减低和淋巴细胞转化...经检查176例(男52,女124)明确诊断的风湿病患者的 T 细胞亚群,结合多项细胞免疫指标分析,发现此类患者的 CD_8、CD_4、CD_3细胞均有不同程度的减低,以 CD_8细胞减低最为明显。同时有 B 细胞的升高、大颗粒淋巴细胞的减低和淋巴细胞转化率的减低。此种表现以自身免疫性疾患最为明显。这表明,CD_8细胞的数量减少和功能减低是此类患者免疫调控紊乱的重要环节。展开更多
In the design of cool-supply system, the temperature rise of cooling water pipeline is usually determined by experience, but not calculated. In gcnacral, the temperature rise is 1℃ for cooling water supply pipes and ...In the design of cool-supply system, the temperature rise of cooling water pipeline is usually determined by experience, but not calculated. In gcnacral, the temperature rise is 1℃ for cooling water supply pipes and 0.5℃ for return pipes. The calculated results of TR according to classical approaches of thermodynamics are smaller than the tested data. This paper has analysed the causes that affect the temperature rise in detail. The heat transfer of pipe wall and the pressure drop in pipeline are two main factors. Besides, the paper gives another five factors as follows: 1. The heat radiation from the sun to pipelines; 2. The increased heat transfer due to the water condensation around the outer wall of pipelines; 3. For the underground pipelines, the existing unstable heat transfer; 4. The effects of insulation material as well as the installed quality of insulation layer; 5.The additional cool loss produced by the accessories, such as valves, brace etc. According to the above analysis, the paper展开更多
文摘经检查176例(男52,女124)明确诊断的风湿病患者的 T 细胞亚群,结合多项细胞免疫指标分析,发现此类患者的 CD_8、CD_4、CD_3细胞均有不同程度的减低,以 CD_8细胞减低最为明显。同时有 B 细胞的升高、大颗粒淋巴细胞的减低和淋巴细胞转化率的减低。此种表现以自身免疫性疾患最为明显。这表明,CD_8细胞的数量减少和功能减低是此类患者免疫调控紊乱的重要环节。
文摘In the design of cool-supply system, the temperature rise of cooling water pipeline is usually determined by experience, but not calculated. In gcnacral, the temperature rise is 1℃ for cooling water supply pipes and 0.5℃ for return pipes. The calculated results of TR according to classical approaches of thermodynamics are smaller than the tested data. This paper has analysed the causes that affect the temperature rise in detail. The heat transfer of pipe wall and the pressure drop in pipeline are two main factors. Besides, the paper gives another five factors as follows: 1. The heat radiation from the sun to pipelines; 2. The increased heat transfer due to the water condensation around the outer wall of pipelines; 3. For the underground pipelines, the existing unstable heat transfer; 4. The effects of insulation material as well as the installed quality of insulation layer; 5.The additional cool loss produced by the accessories, such as valves, brace etc. According to the above analysis, the paper
