基于系统输出分布的智能控制

提出了文题所述的控制策略,依据输出分布曲线的特征变量选取方法和依据该项信息的规则控制系统。仿真研究得到了满意的结果。在一个实验性二元精馏塔上用IBM-PC进行试验亦获成功。本法对具有非线性特性的分布参数对象,较常规控制策略有明显的优越性。     

5-HT3 Receptor-independent Inhibition of the Depolarization-induced 86Rb Efflux from Human Neuroblastoma Cells,TE671, by Ondansetron

The 5-HT₃-receptor antagonist, ondansetron, has been shown to have positive effects in selected in-vivo models of memory impairment and anxiety. The exact mechanisms underlying such bioactivities are unknown. In the present work, an ⁸⁶Rb efflux bioassay was used to show that ondansetron has a unique ability to block voltage-gated potassium channels in TE671 human neuroblastoma cells. This intrinsic potassium-channel-blocking (KCB) property is relatively weak (IC50 20 (M), but is not shared by other 5-HT₃-receptor ligands including zatosetron, MDL 72222, LY 278, 584, zacopride, 1-phenylbiguanide, and ICS 205–930 (tropisetron). Pre-incubation of the target neuroblastoma cells with several 5-HT-receptor ligands including 5-hydroxytryptamine, 8-OH-DPAT, ketanserin, 2-methyl-5-HT, as well as a number of potent 5-HT₃ agonists and antagonists and two selective neurotoxins, failed to abolish the KCB action of ondansetron. A preliminary structure-activity relationship analysis indicates that the KCB activity of ondansetron is almost entirely attributable to its structural nucleus, 2,3-dihyro-9-methyl-4(lH)-carbazolone. It is hypothesized that the KCB action of ondansetron is mediated through receptors other than 5-HT₃ receptors. The KCB activity of ondansetron may be a significant factor in the in-vivo cognition-enhancing activities of this compound, conceivably due to depolarization of the hippocampal synaptic membranes and a consequent augmentation of neurotransmission.     

硫酸多糖对体外人脐静脉内皮细胞损伤的保护作用

研究表明,硫酸多糖体外对多聚阳离子和氧自由基损伤的人脐静脉内皮细胞有保护作用。肝素、硫酸软骨素A抗多聚阳离子损伤作用比同浓度低分子肝素和甘糖酯强。肝素、硫酸软骨素A、甘糖酯抗氧自由基损伤作用优于同浓度低分子肝素。结果显示硫酸多糖有保护血管内皮的作用,其作用可能与所带阴离子基团有关。     

Good regulation of acupuncture in simple obesity patients with stomach-intestine excessive heat type

In order to investigate the regulatory effect of acupuncture on obesity patients with the Stomach-Intestine Excessive Heat Type, the pre-acupunctureal and post-acupunctural obesity index and biochemical indices of 718 simple obesity patients with Stomach-Intestine Excessive Heat Type were observed. It was showed that the marked weight loss effect was achieved in the cases by acupuncture, and the biochemical indices improved. It suggests that acupuncture had a optimal regulatory effect on the function of nerve, endocrine, digestion and energy metabolism.     

1977～1990年同济医科大学新生视力状况分析

用统计学方法对14年来（1977～1990年）我校6746名新生（13492只眼）的视力状况进行分析。结果表明；新生正常视力逐年减少，视力不良率相应上升（P＜0.001）。城市学生的视力比农村学生差，男生的视力优于女生（P＜0.001）。17～19岁组的视力明显低于其他年龄组（P＜0.001）。高考分数线升高与正常视力者减少呈明显负相关；而与视力不良者增加呈正相关（P＜0.001,＜0.05）。本文认为近距离用眼持续时间过长及环境视域小等是引起视力不良的主要原因。     

Detection of circulating antigen by McAb-AST for evaluating the efficacy of anti-Leishmania chemotherapy.

We have adapted the simple and sensitive McAb-antigen spot test (AST) for evaluating the efficacy of anti-Leishmania chemotherapy. Serum samples from 37 kala-azar patients were tested by McAb-AST, and all showed definite positive reactions before treatment. After a course of antimony treatment, 20 turned negative, coupled with the disappearance of clinical symptoms; another 12 cases responded with weak positivity accompanied by an improvement of clinical manifestations; and the remaining 5 antimony-resistant patients showed strong positive reactions, with their conditions gradually worsening. Furthermore, all 6 cases in which the diagnosis was missed by the bone marrow smear method turned McAb-AST negative after chemotherapy. These results suggest that McAb-AST can be used to evaluate the efficacy of chemotherapy as well as to avoid missed diagnosis by the bone marrow smear method.     

联合国驻利比里亚维和部队二级卫勤保障中航空医疗后送的组织实施

目的 通过伤病人员空运后送的组织实施,了解联合国维和部队快速空中转运系统与卫勤保障. 方法 2004年12月至2005年7月,中国维和医疗分队在非洲执行了联合国利比里亚维和行动中的二级卫勤保障任务.利用联合国在任务区建立的陆空一体化机动后勤保障力量,我们对63例伤病员组织实施了航空医疗后送.通过与维和战区小型军事移动通信单位联络,经卫星远程通讯设施,用电话、传真、电子邮件等与任务区军事指挥、卫生、运输等部门联通.采取多国维和部队联军协调,联合行动,外军护卫,专人陪送,保障伤病员安全与生命.所有伤病员在后送前经严格对症治疗处理,病情稳定.空运机种为俄罗斯米-8通用型直升机和加拿大Duch-7固定翼飞机,采用固定的野战直升机场. 结果 全部伤病员无一例因空运后送死亡或病情加重. 结论 在维和行动中,多国维和部队合作实施安全高效的航空医疗后送伤病人员是新时期我军开展的一项新课题.在联合国维和行动卫勤保障体系框架下,注重联络、协调、理顺与任务区各相关部门关系,配合多国维和军兵种单元联军合作,可以实施高效快速的卫勤行动,提高保障的整体效能.利用维和卫勤保障锻炼部队,是培训和提高我军医务人员综合实战能力的极好时机.     

D4S1647、D6S2414基因座在中国汉族、蒙古族、藏族的遗传多态性

目的 调查D4S1647、D6S2414基因座在中国汉族、蒙古族、藏族群体中的遗传分布规律。方法 采集308份血及唾液标本应用PCR技术，扩增产物用非变性聚丙酰胺凝胶电泳分离，银染显色分析。结果 两位点各群体基因型频率分布均符合Hardy-Weinberg平衡，每一位点等位基因频率分布在各群体间无显著差异；通过对10个汉族家系的遗传模式分析，证实了两位点等位基因传递遵循孟德尔遗传规律。结论 D4S1647、D6S2414基因座在中国汉族，蒙古族，藏族群体均具有高度遗传多态性。