Study of Treating HAPE with HBO in Situ at the Altitude of 4636 m

Study Objective ： To evaluate the treatment effect of HAPE with HBO in situ at an extreme altitude of 4636 m. To investigate the relationship between pulmonary hypertension （PH） and HAPE. To emphasize the importance of the treatment in situ. Methods： The 32 patients from the plateau of 4636 - 5130 m （the barometric pressure： 57.41 - 53.28 kPa/431.6 - 400.6 mmHg（1 mmHg = 133.3224 Pa）, the partial pressure of oxygen： 12.0 - 11.6 kPa/90.0 - 87.0 mmHg） were treated in situ of 4636 m altitude with HBO. Before and after the treatment, the clinical symptoms / signs, radiographic evidence, SaO2, and MPAP were compared. Results： The clinical symptoms/signs, and all the targets of the patients were improved dramatically （p 〈 0.001）. Conclusions： Treating HAPE with HBO is the most effective method among various therapies in situ at an extreme altitude. The pulmonary -artery pressure was significantly decreased. All eases showed improved immediately. Among the subjects, 11 eases （34.3 %） were cured at once. The therapy made it possible for patients to get further treatment at a lower altitude area with prospective good results. We suggested that treating HAPE with HBO should be the first choice in situ. There must be PH in the patients of HAPE, but the reverse is not the true. The PH is a mechanism of normal compensation of the body exposing in the hypoxie environment. It is very necessary for us to explore the threshold of PH when a HAPE happens.     

Structure of Ramie Treated by Liquid Ammonia

The morphology and supermolecular structures of the scoured/bleached ramie and scoured/bleached/liquid ammonia treated ramie were studied by means of scanning electron microscope, X-ray diffractometer, reverse gel permeation chromatography, etc. The results indic.ate that liquid ammonia treatment of the scoured/bleached ramie leads to a smoother surface, a lower crystalliuity, partial crystal transformation from cellulose Ⅰ to cellulose Ⅲ a decrease in the volume and cumulative surface area of the larger micropores and an increase in those of the smaller ones in the fiber.     

沥青混凝土路面平整度的成因分析及处置措施

笔者通过近年来的工程实践,分析了影响公路平整度的因素,并提出了相应的对策,从而确保高等级公路沥青混凝土路面的平整度。     

高速公路交通量预测失准问题与对策

文章根据三条高速公路建设项目关于交通量预测的后评价寻找预测缺陷。并总结交通量预测失准的原因，提出了解决该问题的三项具体措施。     

铁路工务调度工作如何适应大站段改革的新形势

针对铁路大站段管理滞后的实际,从建立电话会议系统、建立信息分析处理机制、建立危急处理机制、规范调度管理等方面阐述了提升站段调度管理质量的措施。     

抛物型积分-微分方程的有限体积数值模拟与误差估计

采用有限体积方法对抛物型积分-微分方程进行数值模拟。提出了有限体积格式，并通过严格的数值分析,得到了最优的L2模误差估计．     

烧结钕铁硼磁体的热处理研究

系统研究了富Ｎｄ的ＮｄｘＦｅ９３－ｘＢ７（ｘ＝１６～２８）烧结磁体的热处理。磁体经低于６５０℃的热处理后，矫顽力显著提高，同时主相晶间出现ＮｄＦｅ２Ｏｘ相，热处理后矫顽力的增加由反向畴形核场的提高和ＮｄＦｅ２Ｏｘ相对反向畴壁钉扎场的增大共同贡献。     

钙阻断剂与肿瘤治疗

抗药性是肿瘤化疗的最大障碍之一,具抗药性的肿瘤细胞药物外排功能很强,而钙阻断剂能抑制抗癌药物从抗药性肿癌细胞排出,导致细胞抗药性减弱,可用于肿囊化疗,有潜在的临床应用价值,但有副作用。故应寻求毒副作用小类似钙阻断剂的其他修饰物以促进肿癌化疗。