塔里木油田超深裸眼水平井完井模拟通井优化技术

常规偏心分层注水会导致区块欠注严重, 难以满足超深双台阶水平井分层注水;并且难以满足不动管柱实现注水井的分层注水及分层酸化。为此研制了针对双台阶水平井分层注水及酸化的一体化管柱及配套工具, 管柱主要由封隔器、注水酸化一体化配水器等组成;测调过程中测调仪器与管柱中的配水器采用同心对接, 投劳成功率高;并且通过与特制酸化芯子配合可实现不动管柱分层酸化。利用WELLCAT 软件模拟出注水、酸化、停注时各封隔器的受力、管柱收缩长度以及管柱整体强度, 为封隔器及伸缩管的选择提供理论依据。现场试验表明, 研制的注水酸化一体化管柱及配套工具设计合理, 测调成功率高, 能够满足双台阶水平井的分层注水及酸化要求。     

福建畲族成年男性DYS19、DYS389I、DYS393多态性与身高的关系

目的:探讨福建畲族男性DYS19、DYS389I、DYS393多态性与身高之间的关系.方法:调查福建畲族健康男性152例,测量其身高.应用AmpFlSTR(R) YfilerTM荧光标记复合扩增系统及自动测序法,对152例研究对象进行DYS19、DYS389I、DYS393的等位基因分型.结果:福建畲族成年男性的身高在DYS19、DYS389I基因座的不同基因型间差异有统计学意义,在DYS393基因座的不同基因型间无差异.结论:福建畲族DYS19、DYS389I的遗传多态性可能与福建畲族男性身高增长有关,DYS393对福建畲族男性身高影响不明显.     

Up-regulation of ERK and p38 MAPK signaling pathways by hepatitis C virus E2 envelope protein in human T lymphoma cell line

Hepatitis C virus (HCV) infection correlates with human immune disorders characterized by abnormal activation and proliferation of lymphocytes. Interaction of HCV major envelope protein E2 with susceptible cells occurs at an early stage of the viral infection. HCV tropism for susceptible cells may elicit cellular signaling events implicated in the viral pathogenicity, and E2 protein is known to be responsible for the tropism. We documented previously that HCV E2 protein was capable of activating extracellular signal-regulated kinase (ERK) in human hepatoma Huh-7 cells. Here, ERK and p38 mitogen-activated protein kinase (MAPK) signaling pathways were investigated in human T lymphoma cell line Molt-4 in response to HCV E2 protein. Binding of HCV E2 protein to Molt-4 cells was detectable, and such interaction was a determinant for recognition and delivery of the E2 signal to intracellular pathways. Activation of ERK and p38 MAPK was specifically induced following the HCV E2-cell interaction. CD81 and low-density lipoprotein receptor (LDLR), proposed cellular receptors for HCV, were expressed naturally on Molt-4 cells. CD81 and LDLR were shown to mediate HCV E2-induced activation of ERK and p38 MAPK. In CD81-deficient U937 cells, levels of ERK and p38 MAPK activation and cell proliferation induced by HCV E2 protein were lower than those in Molt-4 cells. Furthermore, cell proliferation and secretion of interferon-gamma and interleukin-10 by Molt-4 cells were promoted by HCV E2 protein. Therefore, ERK and p38 MAPK signaling pathways were up-regulated by HCV E2 protein without synergetic stimulation, which was accompanied by alterations of cell behavior.     

苦参碱聚乳酸微球的缓释性和玻璃体腔注射的安全性研究

目的研究苦参碱聚乳酸微球（MAT-PLA-MS）的缓释性和玻璃体腔注射的安全性。方法透射电镜观察MAT—PLA—MS的形态,紫外分光光度法观测其体外释放情况。玻璃体腔彩色照相记录其分解过程,裂隙灯显微镜、间接检眼镜、视网膜电图（ERG）、光学显微镜和透射电镜观察不同剂量组的苦参碱游离药物和MAT—PLA—MS在注药后不同时间点对眼组织的影响。结果MAT—PLA—MS的平均粒径为2．28μm,载药量为6．17％。体外释放672h,累积释放百分率为87．93％,缓释作用明显。MAT—PLA—MS在玻璃体腔内随时间延长表现为逐渐降解的过程。游离药物各剂量组和载药微球各剂量组在玻璃体腔注射后各时间点裂隙灯显微镜和间接检眼镜检查均未见异常。游离药物4mg组注药后1dERGb波振幅下降。组织病理学检查表明,游离药物4mg组在注药后1d开始出现视网膜毒性反应,载药微球6mg组在注药7d后出现轻微的视网膜毒性反应。结论MAT—PLA—MS具有明显的缓释效果,安全剂量较游离药物大,有望成为一种理想的防治增生性玻璃体视网膜病变的给药系统。     

帕金森病患者parkin基因点的突变(英文)

目的观察不同亚型帕金森病(PD)患者中是否存在parkin基因新的突变以及突变的分布,探讨parkin基因在PD发病机制中的可能作用。方法70例患者被分为早发性PD和晚发性PD,70例正常体检者为对照组。以提取基因组DNA为模板,扩增parkin基因的全部12个外显子,然后行单链构象多态性(SSCP)电泳观察,对泳动异常者进行DNA序列测定,以确定外显子中突变的存在及其分布。结果70例患者中发现4例SSCP泳动异常,测序证实在1例早发性PD患者的外显子7中存在一个未曾报道过的新的点突变位点Gly284Arg。结论parkin基因点突变也是我国早发性PD患者的致病原因之一。     

1例卵巢早衰病人的护理

卵巢早衰是指月经初潮正常,已建立规律月经,第二性征发育正常,40岁以前由于卵巢功能衰退而出现卵巢萎缩性闭经和性器官萎缩(如子宫萎缩、阴道皱襞消失、外阴萎缩等).     

Decreased circulating levels of tumor necrosis factor-alpha in postmenopausal women during consumption of soy-containing isoflavones

CONTEXT: TNF-alpha is a key mediator of inflammatory responses and may play a pivotal role in the development of cancer and in bone resorption. OBJECTIVE: This study determined the effect of soy rich in isoflavones on levels of TNF-alpha. DESIGN: Twelve postmenopausal women ingested a 36-oz portion of soymilk containing isoflavones daily for 16 wk and provided fasting blood samples multiple times before, during, and after soy consumption for the analyses of cytokines and monocyte content. RESULTS: Compared with prediet levels (36.3 +/- 14.0 pg/ml), serum levels of TNF-alpha decreased by 25.1% (27.2 +/- 10.3 pg/ml; P < 0.01) as early as 2 wk after soy consumption and by 66.7% (11.6 +/- 5.3 pg/ml; P < 0.01) 10 wk after soy consumption and recovered to the prediet levels 4 wk after the termination of soy consumption (38.6 +/- 19.6 pg/ml; P = 0.66). A similar decrease of up to 56.6 and 14.4% was found for serum IL-1alpha and the mean percentage of blood monocytes during soy consumption, respectively, but not for IL-6. In cultures of monocytes or whole blood from postmenopausal women, soy isoflavones (genistein and daidzein, 10-1000 nm), tamoxifen (10-1000 nm), or 17beta-estradiol (0.1-10 nm) inhibited lipopolysaccharide (1 microg/ml)-induced TNF-alpha production by up to 55.8%. CONCLUSIONS: Isoflavones may be the active components in soy responsible for the decrease of TNF-alpha found in postmenopausal women during a soy diet. This antiinflammatory effect of the isoflavones may be important in immune modulation and the prevention of bone loss and cancer.     

Water pollution control technology and strategy for river–lake systems: a case study in Gehu Lake and Taige Canal

The Taoge water system is located in the upstream of Taihu Lake basin and is characterized by its multi-connected rivers and lakes. In this paper, current analyses of hydrology, hydrodynamics and water pollution of Gehu Lake and Taige Canal are presented. Several technologies are proposed for pollution prevention and control, and water environmental protection in the Taihu Lake basin. These included water pollution control integration technology for the water systems of Gehu Lake, Taige Canal and Caoqiao River. Additionally, river–lake water quality and quantity regulation technology, ecological restoration technology for polluted and degraded water bodies, and water environmental integration management and optimization strategies were also examined. The main objectives of these strategies are to: (a) improve environmental quality of relative water bodies, prevent pollutants from entering Gehu Lake and Taige Canal, and ensure that the clean water after the pre-treatment through Gehu Lake is not polluted before entering the Taihu Lake through Taige Canal; (b) stably and efficiently intercept and decrease the pollution load entering the lake through enhancing the river outlet ecological system structure function and water self-purifying capacity, and (c) designate Gehu Lake as a regulation system for water quality and water quantity in the Taoge water system and thus guarantee the improvement of the water quality of the inflow into Taihu Lake.