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Search Results: 1 - 10 of 174025 matches for " 杨清宇 "
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鄂尔多斯盆地演武地区延9油层组沉积相研究
Study on the Sedimentary Facies of Yan 9 Reservoirs in Yanwu Area of Ordos Basin
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孙雨轩, 王海红, 冯诗旸, 方开银, 何为,
Journal of Oil and Gas Technology (JOGT) , 2016, DOI: 10.12677/JOGT.2016.382010
Abstract:
演武地区延9油层组是鄂尔多斯盆地延安组重要油层组之一,但一直以来对其沉积相的研究程度较低。结合整个鄂尔多斯盆地的构造及沉积演化特征,综合运用沉积学、岩石学、测井地质学、层序地层学等理论为指导,通过对泥岩颜色、岩石学特征、沉积构造特征、古生物标志以及测井相标志的详细研究认为,演武地区延9油层组属辫状河三角洲沉积体系,发育辫状河三角洲平原亚相,并进一步将其划分为分流河道、分流间洼地、天然堤、沼泽等4个主要沉积微相类型。根据延9油层组沉积微相的展布及演化规律,并结合区域沉积和构造背景,建立了其沉积模式。
The Yan 9 Reservoir of Yanwu Area was one of the important oil-bearing formations of Yan’an Formation in Ordos Basin, the research degree on the sedimentary facies of the sedimentary facies was lower. Combined with the structure and sedimentary evolution characteristics of the whole Ordos Basin, by synthetically using the geological theories, such as petrology, sedimentology, log-ging geology, sequence stratigraphy and so on, and through researching in detail the mudstone color, petrological characteristics, sedimentary structural characteristics, paleontologic evidence and logging facies markers, the result showed that Yan 9 Reservoir of Yanwu Area belonged to a braided river delta sedimentary system, where developed braided river delta plain facies. It is further divided into 4 sedimentary microfacies, i.e. the distributary channel, the inter-flow de-pression, the natural levee, and the swamp. According to the distribution and evolution of sedi-mentary microfacies in the Yan 9 Reservoir, and combined with regional sedimentary and tectonic background, the sedimentary mode of the Yan 9 Reservoir is established in the study area.
镉和苯并芘胁迫对文蛤血细胞功能的影响
,红生,王晓
海洋科学 , 2010,
Abstract: 应用流式细胞仪技术,通过检测血细胞的吞噬活力、活性氧产物和死亡率,研究了Cd2+和苯并芘(Bap)胁迫7d对文蛤血细胞功能的影响。结果表明,10μg/L和100μg/LCd2+胁迫会显著降低血细胞的吞噬活力,增加血细胞的死亡率,100μg/LCd2+会显著增加血细胞活性氧产物。5μg/L和50μg/LBap胁迫会显著降低文蛤血细胞的吞噬活力,增加血细胞的死亡率,50μg/LBap会显著增加血细胞活性氧产物。可见,Cd2+和苯并芘胁迫会显著降低文蛤血细胞的功能,导致文蛤免疫力下降,增大文蛤被病害感染的机率。
重金属污染胁迫对双壳贝类生态毒理效应研究进展
王晓,红生,
海洋科学 , 2009,
Abstract:
镉和汞两种重金属离子对四角蛤蜊的急性毒性
王晓,,红生
海洋科学 , 2009,
Abstract: 采用毒理学实验方法,比较研究了Cd2+和Hg2+对四角蛤蜊(MactraveneriformisReeve)急性毒性效应的差异,以期为进一步评价重金属离子对四角蛤蜊的毒性效应和作用机理等提供理论依据。死亡概率单位和实验液浓度对数的线性回归分析表明,Cd2+对四角蛤蜊在24、48和96h的半致死浓度(LC50)分别为15.961、5.149和2.383mg/L,Hg2+的LC50分别为3.714、0.607和0.207mg/L;Cd2+和Hg2+对四角蛤蜊的安全质量浓度分别为0.0238mg/L和0.0021mg/L,分别是我国渔业水质标准(GB11607-89)限定量的4.76倍和4.02倍。
裂解连杆断裂结合面缺损面积定量描述与分析
寇淑, , 高岩, 慎华
吉林大学学报(工学版) , 2013,
Abstract: 针对连杆裂解加工中经常发生断裂面颗粒脱落而导致结合面面积缺损的问题。根据逆向工程理论,获取了连杆断裂结合面数据信息并重构三维断裂面,在采用TIN法显示连杆断裂结合面形貌特征的同时,利用三角面片拼接、累加原理定量描述了连杆断裂结合面面积。仿真实验结果表明:用裂解工艺加工某轿车连杆断裂面比用机械加工平面面积增加了13.1%以上,在不降低承载能力和使用性能的前提下,其颗粒脱落极限尺寸许可值比经验值大大提高,对裂解连杆生产具有重要意义。
Distribution of nutrients and eutrophication assessment in Tianjin Coastal Area
天津近岸海域氮磷营养盐分布及富营养化评价

王晓,红生,孙金生,
海洋科学 , 2011,
Abstract: The physical and chemical factors and the concentrations of ammonia, nitrite, nitrate, phosphorous, and COD of the Tianjin coastal seawater were investigated from October 2007 to August 2008. The spatial and temporal variations of nutrition, as well as the eutrophication level and type, were discussed. The concentrations of inorganic nitrogen, inorganic phosphorous, and COD reached the highest values on October 2007. Most of the nitrogen concentrations were higher than the forth-rate seawater standard of China. In addition, the nitrogen contents in summer and autumn were higher than those in winter and spring because of the contribution of surface runoff. The concentrations of phosphorus were relative low, and the N/P values indicated the phosphorus might become the limiting factors to phytoplankton growth. The results of eutrophication type assessment showed moderate phosphorus limited potential nutritional status of seawater in August 2008. The eutrophication indice of all the sampling months were higher than 1 except for the value of March 2008 in Caijiapu. The highest value of eutrophication indices, 64, occurred on October 2007.
点式玻璃建筑中四点支承玻璃板的受弯分析
王元,,,石永久
工程力学 , 2002,
Abstract: 现有的玻璃幕墙规范(JGJ102-96)对点式支承玻璃的应力和位移分析尚未作出明确规定。本文在弹性板壳力学的基础上进行相应的受弯分析,针对实际工程给出了简单适用的计算方法,其结果与有限元分析和试验研究结果相吻合。本计算方法简单明了,可为规范修改和工程设计提供必要理论依据。
镉和汞胁迫对四角蛤蜊(Mactra veneriformis)血细胞的毒性损伤研究
王晓,红生,邢坤,
海洋与湖沼 , 2011, DOI: 10.11693/hyhz201106016016
Abstract: 采用透射电镜观察、溶酶体膜稳定性衡量和微核生成率检测的方法, 系统研究了室内模拟Cd 和 Hg 污染胁迫对四角蛤蜊血细胞的毒性损伤。结果表明, Cd 对四角蛤蜊血细胞超微结构的损伤表现出明显的浓度依赖效应, 125μg/L Cd胁迫下血细胞结构损伤程度高于25μg/L Cd胁迫; 不同浓度Cd和 Hg暴露 14天后, 各处理组(2μg/L Hg处理组除外)中性红保持时间(NRRT)随胁迫浓度的增高逐渐降低, 微核率(MNF)和总畸形核率(TANF)随胁迫浓度的增高而逐渐增大; 25μg/L Hg 处理组血细胞中性红保持时间要低于 25μg/L Cd 处理组, 而微核率和总畸形核率则高于 25μg/L Cd 处理组, 说明Hg 胁迫对四角蛤蜊血细胞溶酶体膜和细胞核具有更强的损伤作用; 相关性分析表明中性红保持时间、微核率和总畸形核率三种指标对于衡量重金属污染对四角蛤蜊血细胞的毒性效应有非常好的协同检测作用, 可以作为有效的生物标志物。
功率圆确定稳定约束的可用输电能力分析
,彭建春,何禹
中国电机工程学报 , 2008,
Abstract: 提出一种考虑功角和电压稳定约束计算可用输电能力的新方法。针对功角和电压稳定约束表达复杂的问题,首先基于功率圆推导出线路传输有功功率极限值,分析表明,当电力系统发生功角失稳或电压失稳前,输电网络中至少有1条线路输送的有功功率达到其传输有功功率极限。因此,用线路传输有功功率极限近似简洁地表达这2种复杂约束的方法,建立考虑功角和电压稳定约束的可用输电能力新模型。运用逐点线性化方法实现问题求解。算例仿真与分析的结果表明该文的方法有效、可行。
槐定碱抗骨癌痛作用及其机制研究
严继贵,,王雅洁,阚晶
中国中药杂志 , 2013,
Abstract: 目的:采用W256癌细胞诱导的骨癌痛模型大鼠探讨槐定碱抗癌痛药效及其作用机制。方法:采用骨髓腔注射W256癌细胞复制骨癌痛大鼠模型;造模10d后选取模型复制成功的大鼠36只随机分为模型对照组及槐定碱治疗组,另取同期10只大鼠作为正常对照组;治疗组大鼠于造模第15天开始给予槐定碱25mg·kg-1治疗10d;各组大鼠给药前、后测量机械痛阈和热痛阈,末次给药后,对大鼠患肢进行放射学和组织病理学观察,并采用免疫组化法检测大鼠患肢肿瘤组织环氧酶-2(COX-2)、血管内皮生长因子(VEGF)的表达。结果:槐定碱可明显提高骨癌痛大鼠机械痛阈和热痛阈值(P<0.05,P<0.01);改善肿瘤引起的骨损伤(P<0.05),明显下调肿瘤组织COX-2,VEGF表达(P<0.05)。结论:槐定碱对W256癌细胞诱导的骨癌痛大鼠有镇痛作用和抑制肿瘤发展作用,其机制可能与下调COX-2,VEGF的表达有关。
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