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新疆东昆仑祁漫塔格一带1:5万航磁异常特征及找矿方向  [PDF]
杨春雨,姚卫星
西北地质 , 2010,
Abstract: 新疆东昆仑祁漫塔格一带成矿地质条件优越,是西北地区重要的找矿区域之一。2008年国土资源航遥中心开展的1:5万航磁勘查工作反映该区总体磁场较弱,单个磁异常强度较低,但反映的磁异常信息较为丰富。通过开展1:5万航磁异常查证工作,认为航磁异常较全面、客观的反映了该区的地质、构造及矿化特征,查证磁异常均与一定地质体或矿化对应。该区以铅锌矿化为主,多金属矿化常见,矿化类型以矽卡岩型为主,航磁异常主要表现在局部磁异常升高、正负磁异常过渡带部位,低缓磁异常转折部位等。矿致异常形态多样,较难识别,应以通过航磁异常间接找矿为主,指导下一步地质找矿工作,有效加快新疆东昆仑祁漫塔格一带矿产勘查开发进程。
利用卫片制图进行全国土地利用现状概查的基本方法和进展  [PDF]
李伯衡?
中国农业资源与区划 , 1983, DOI: 10.7621/cjarrp.1005-9121.19830108
Abstract: 利用1:25万纠正彩色卫片,参考不同时态卫片和1:5万地形图,编制1:25万土地利用现状卫星影象图,进行全国土地利用现状调查的研究试验工作,从1980年6月到现在,我们主要进行了四方面的工作;
祁漫塔格北缘断裂晚第四纪以来活动特征初步研究
Primary Study of Late Quaternary Active Features of Northern Margin Fault of Qimantag
 [PDF]

邵延秀,葛伟鹏,张波,苏琦
- , 2016, DOI: 10.3969/j.issn.1000-0844.2016.06.0970
Abstract: 祁漫塔格北缘断裂处于青藏高原内部造山带地区,其构造活动反映了青藏高原的构造演化特征。本文采用活动构造和构造地貌相结合的研究方法,对该断裂的活动性进行初步分析研究。首先采用航卫片解译和野外调查,发现该断裂断错了山前全新世冲洪积扇,形成的断层陡坎高度在1.5~2.5 m。通过扩散方程,并参考前人研究结果,认为祁漫塔格北缘断裂晚第四纪的抬升速率初步限定在1~2 mm/a。我们基于数字高程模型提取的地形高程纵剖面和面积-高程积分,其结果也支持祁漫塔格北缘存在构造活动。
The northern margin fault of Qiamantag is located between the Qaidam basin and the Kunlun orogen. Its active features are responses to the Tibetan Plateau uplift, which we examine in this paper to better understand the Tibetan Plateau's tectonic evolution. To date, the northern margin fault of Qimantag has been little understood, including its active style and slip rate, which are important parameters in an active fault. To address this knowledge gap and to accurately determine the Qimantag fault's slip rate, we used methods related to active tectonics and tectonics geomorphology. We traced fault lines based on satellite imagery interpretation and field surveys, and found the fault scarp to be discontinuous along the strike. In this paper, we examine in detail three sites from the west to the east of this segment. Our results show that the fault widely ruptured young alluvial fans in the field to form 1.5~2.5 m high scarps in the west segment. The slopes of these scarps have angles of ~30°. Due to the lack of dateable depositions in the study area, we took no geochronological samples to date the age of the alluvial fans. However, we used a diffusion equation to constrain the age of the faulted scarps. Based on our calculations, the scarp is about 1 000~15 000 years old at the Q1 site, with a height of about 2.5 m. Based on the age and height of the scarps, we calculated their uplift rate to be about (2.0±0.5) mm/a. This value is similar to the results obtained from river incision and geodetic leveling. Based on our results, we consider the uplift rate to be 1~2 mm/a. In addition, we also established elevation longitudinal profiles and the hypsometric integrals along the Qimantag Mountain. These profiles and HI values indicate that the mountain is experiencing tectonic uplift.
胚胎冻融对卵裂期行植入前遗传学诊断或筛查后可移植胚胎临床结局的影响  [PDF]
石碧炜,崔龙,叶晓群,叶英辉
- , 2017, DOI: 10.3785/j.issn.1008-9292.2017.06.12
Abstract: 目的:探讨胚胎冻融对卵裂期胚胎行植入前遗传学诊断或筛查后可移植胚胎临床结局的影响。方法:回顾2011年1月至2016年12月在浙江大学医学院附属妇产科医院行植入前遗传学诊断或筛查的302个周期,分析其病例组成,比较其中新鲜胚胎组(n=184)与冻融胚胎组(n=118)的移植妊娠率、着床率、活产率和流产率,并分析妊娠结局的影响因素。结果:新鲜胚胎组正常或平衡易位胚胎检出率高于冻融胚胎组,平均移植胚胎个数多于冻融胚胎组,差异有统计学意义(均P<0.05);新鲜胚胎组的妊娠率、着床率和活产率低于冻融胚胎组,而流产率高于冻融胚胎组,但差异均无统计学意义(均P>0.05)。多因素logistic回归分析结果显示,女方年龄、男方年龄、胚胎类型、植入前遗传学诊断或筛查方式和病因对妊娠结局均无影响(均P>0.05)。结论:卵裂期胚胎冷冻复苏对植入前遗传学诊断或筛查后可移植胚胎的临床结局无显著影响。
Abstract: Objective:To investigate the effects of embryo cryopreservation and thawing on clinical outcomes of transplantable embryos after preimplantation genetic diagnosis (PGD) or preimplantation genetic screening (PGS) in cleavage-stage. Methods:The clinical data of 302 cases (including 118 cases using frozen/thawing embryos and 184 cases using fresh embryos) undergoing PGD/PGS in Women's Hospital, Zhejiang University School of Medicine during January 2011 and December 2016 were retrospectively analyzed. The pregnancy rate, implantation rate, live birth rate and abortion rate of fresh and frozen-thawed embryo transfer (FET) cycles were compared. And the influencing factors for pregnancy outcome was analyzed by multivariate logistic regression. Results:The rate of normal or balanced translocation embryos in fresh cycle was higher than that in FET cycle (23.52% vs 16.67%, P<0.05), and the average number of transplanted embryos was more than that in FET cycle (1.54±0.56 vs 1.33±0.51, P<0.05). But there were no significant differences in pregnancy rate (36.42% vs 40.00%, P>0.05), implantation rate (26.62% vs 32.91%, P>0.05), abortion rate (19.44% vs 8.33%, P>0.05) and live birth rate (25.96% vs 28.33%, P>0.05) between fresh cycle and FET cycle. Multivariate logistic regression showed that, parent ages, embryo status (fresh or frozen), the mode of PGD/PGS and the findings of PGD/PGS had no impact on pregnancy outcome (all P>0.05). Conclusion:Cryopreservation do not have significant effects on the clinical outcomes of transplantable embryos after PGD/PGS in cleavage-stage. Key words: Cryopreservation Embryo transfer Fertilization in vitro Cleavage stage, ovum Abortion, spontaneous/etiology Pregnancy outcome Preimplantation diagnosis Genetic screening
利用SPOT卫片在黄土高原丘陵沟壑区进行土地利用现状调查的精度分析  [PDF]
孟国强,黄自立
国土资源遥感 , 1991, DOI: 10.6046/gtzyyg.1991.01.08
Abstract: 本文探讨了利用SPOT卫片进行黄土高原丘陵沟壑区县级(1:50000)土地利用现状调查制图的可行性。从分类精度、制图精度等方面进行分析,提出在本区进行土地利用现状调查制图(1:50000),可用SPOT卫片配合黑白航片作为调查信息源。另外,还讨论了利用SPOT卫片在本区进行某些土壤类型判别的可行性。
论祁头山文化  [PDF]
张童心,王斌
东南文化 , 2009,
Abstract: ????江阴祁头山遗址发掘迄今,引起学界广泛关注,遗址对于探究早期太湖地区聚落考古的文化传承问题具有重要意义,有助于完善该地区史前文化的发展脉络。从出土陶器、玉器的形制、工艺及其内涵分析,祁头山遗址均体现出明显的多文化因素,加之本地区独有的文化特色,使得祁头山与典型的马家浜文化存有较大差异,可视为一种全新的考古学文化―――祁头山文化。
越中祁氏藏书世家考述  [PDF]
马黎明
图书馆工作与研究 , 2014,
Abstract: ?本文对明代越中祁氏藏书世家进行了溯源,主要对祁承火業、祁彪佳、祁理孙、祁班孙等为代表的人物谱系和相关藏书楼作了考述。
粪便钙卫蛋白测定在门诊常见肠道疾病诊断中的意义  [PDF]
蔡 佳,章述军
重庆医科大学学报 , 2013,
Abstract: 目的:研究粪便钙卫蛋白在诊断常见肠道疾病-炎症性肠病(inflammatoryboweldisease,IBD)、肠易激综合征(irritablebowelsyndrome,IBS)、结肠癌中的意义。方法:选取门诊病人新鲜粪便共120例,其中健康对照组、IBS组、IBD组及结肠癌组各30例,用ELISA法定量检测各组中粪便钙卫蛋白水平,确定钙卫蛋白诊断IBD及结肠癌的敏感性和特异性,并与传统炎症相关性指标,如红细胞沉降率(erythrocytesedimentationrate,ESR)、C反应蛋白(Creactiveprotein,CRP)、白细胞(whitebloodcell,WBC)计数相比较。结果:IBD组与结肠癌组、IBS组、对照组比较,粪便钙卫蛋白水平的差异均具有统计学意义(P<0.05)。而结肠癌组与IBS组、健康组比较,差异也均具有统计学意义(P<0.05)。CRP、ESR、WBC计数在结肠癌、IBS及正常对照组间差异均无统计学意义(P>0.05),IBS组与IBD组间ESR、CRP水平存在显著性差异(P<0.05)。粪便钙卫蛋白诊断IBD的敏感性为86.7%,特异性为83.3%。钙卫蛋白诊断结肠癌的敏感性为86.7%,特异性为76.7%。结论:粪便钙卫蛋白不仅能够初步筛查肠道器质性疾病和功能性疾病,而且在鉴别IBD和结肠癌方面具有一定的作用。
清至民初卫河变迁考  [PDF]
孟祥晓
地域研究与开发 , 2013,
Abstract: 卫河系海河水系的支流,它流经河南北部、河北南部及山东西北部,隋唐至宋元时期称为御河,是重要的漕运通道。清至民初时期(1644—1927),由于支流分布及地理位置、地势等原因,卫河水患常发,河道亦时常发生变迁,其变迁河段主要在滑县至大名县之间,且有逐渐向东南偏移的总体趋势和特点。研究表明:卫河的主要支流均在滑县以下由西北向东南注入卫河,而卫河东岸除了流量不大的硝河外,则较少有河流的汇入,加上漳河的频繁迁徙和不断侵入,势必会对东岸造成冲击,从而引发卫河向东南滚动迁移。
π-演算中无卫递归的消除
林惠民
软件学报 , 1997,
Abstract: 本文提出消除π-演算中无卫递归的公理,证明了将该公理加入到正则π-演算受卫递归子集上的证明系统后,所得到的证明系统在π-演算全体正则子集上关于互模拟等价的可靠性和完备性.
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