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| 1 | Biostratigraphy and geography of the Ordovician-Silurian Lungmachi black shales in South China显示文摘Based on the new material of seven Ordovician-Silurian boundary sections investigated recently, together with previously published data, we analyze the temporal and spatial distributions of the Lungmachi black shales, a key petroleum source bed widely distributed in South China. The Lungmachi black shales range in age from the Normalograptus persculptus Biozone of the uppermost Ordovician to the Spirograptus guerichi Biozone of the lower Telychian, and ten graptolite biozones can be recognized within this unit. The basal and upper contacts of the Lungmachi black shales are diachronous. The basal contact ranges from the N. persculptus to the C. cyphus biozones, a span of five graptolite biozones over two stages. The upper contact ranges from the D. pectinatus-M. argenteus Biozone to the Spirograptus guerichi Biozone, which spans four graptolite biozones over two stages. The Yichang Uplift resulted in the formation of the Hunan-Hubei Submarine High in the border area of Hubei, Hunan, and Chongqing. This is supported by a break in sedimentation in this area spanning all or part of the Hirnantian, and in many areas extending into the underlying Katian and overlying Rhuddanian. Comparison of the distribution of the Katian to Rhuddanian strata in this area indicates a growth and subsequent reduction in area of the Hunan-Hubei Submarine High particularly in the Hirnantian to early Rhuddanian. This may partly represent the influence of the process of formation and melting of ice sheet in Ordovician South Pole and consequent sea level change. | FAN JunXuan Michael J MELCHIN CHEN Xu WANG Yi ZHANG YuanDong CHEN Qing CHI ZhaoLi CHEN Feng | 2011 | Science China Earth Sciences2011,54,12: | 24 |
| 2 | “过度投资”是低效率投资吗?——来自中国上市公司的证据显示文摘投资效率是公司金融领域的重要研究课题,理论上的低效率投资是指净现值为负的投资。而在实证中,大量文献以Richardson(2006)回归模型来衡量过度投资,并把以此模型衡量的'过度投资'等同为低效率投资。但本文的研究发现Richardson(2006)回归模型无法衡量企业理论的过度投资和投资效率,甚至会得出与实际投资效率相反的结论。所以,现有文献中基于此模型而得出的关于投资效率的研究结论可能存在一定程度的偏差,若以此模型来指导投资决策,会造成低效投资。Mueller和Reardon(1993)基于股票市场对企业新增投资的定价来衡量企业的投资效率,符合理论上对投资效率的定义,本文在充分考虑模型内生性问题的基础上对此模型进行了修正,并以实例说明了企业理论投资效率的度量,建议使用此修正模型来衡量企业的投资效率。 | 夏秀芳 吴卫星 J Daniel Chi | 2020 | 中国软科学2020,,12: | 6 |
| 3 | Nat Genet:单基因突变导致过敏性皮炎的发生显示文摘最近,研究者们鉴定出了一类导致神经性皮炎发生的关键基因突变:CARDll。来自美国NIH过敏与传染病研究所的研究者们通过对四个没有血缘关系的患病家庭进行分析,发现了这一导致疾病产生的基因、 | Chi A Ma, Yuan Zhang, Michael A Weinreich, Jonathan J Lyons, Celeste G Nelson, Thomas DiMaggio, Kelly D Stone, Joshua D Milner Jeffrey R Stinson, Elisa Ruffo, Batsukh Dorjbal, Swadhinya Arjunaraja, Kelsey Voss, Andrew L Snow Jordan K Abbott, Pia J Hauk, Paul R Reynolds, Erwin W Gelfand Elisa Ruffo Salomé Glauzy, Natsuko Yamakawa, Eric Meffre Jennifer Stoddard, Julie Niemela, Sergio D Rosenzweig Yu Zhang, Helen F Matthews Joshua J McElwee Nina Jones Alejandro Palma, Matías Oleastro, Emma Prieto, Andrea R Bernasconi, Geronimo Dubra, Silvia Danielian, Jonathan Zaiat, Marcelo A Marti Brian Kim Megan A Cooper Neil Romberg | 2017 | 现代生物医学进展2017,17,27: | 3 |
| 4 | 猪圆环病毒2型病毒样颗粒的制备及其在疫苗研制中的应用显示文摘猪圆环病毒2型(PCV2)是引起猪圆环病毒相关疾病(PCVAD)的主要病原体。病毒衣壳唯一的结构蛋白Cap是PCV2亚单位疫苗的主要靶点。本研究旨在利用重组伪狂犬病病毒(PRV)gE基因缺失株来表达PCV2的Cap,该缺失株在PRV标记疫苗中被广泛使用。试验使用同源重组技术构建了重组PRV病毒株gE(-)/PCV2cap(+)PRV,其中PRV病毒株gE基因上游被PCV2的Cap基因替代。通过免疫荧光技术和Western blotting方法证实重组病毒复制过程中可表达Cap蛋白。电子显微镜结果显示,所表达的Cap蛋白能组装成病毒样颗粒(VLP)。用纯化的VLPs免疫小鼠和豚鼠可产生针对PCV2Cap的特异性免疫应答。这些结果提供了一种基于VLP构建PCV2亚单位疫苗的方法。 | Chi J N 谢冰 | 2014 | 中国畜牧兽医2014,41,6: | 3 |
| 5 | 世界家庭医生组织(WONCA)研究论文摘要汇编——老年人慢性病共病状况与其参与医疗决策偏好之间关系的调查研究显示文摘目的了解个人参与医疗决策的偏好是实施以患者为中心的医疗服务的基础。本文旨在探究美国老年人参与医疗决策的偏好及其慢性病共病情况是否与不爱参与或被动参与临床决策相关。方法本项为横断面研究。研究对象为随机抽取的2 017例具有全国代表性的样本,其数据来源于国家卫生和老龄化趋势研究。偏好被动参与医疗决策是指,患者自身不参与决策过程,只让医生做临床决策。研究对象的慢性病共病状况从以下3个方面进行探讨:(1)判定是否患有慢性病共病:患有2种或2种以上慢性病共病谱(本研究中此疾病谱共包含13种慢性病)中所包括的慢性病被认定为慢性病共病患者;(2)慢性病共病患者所患慢性病简单分类结果;(3)慢性病共病患者所患慢性病聚类分析结果。在调整年龄、性别、文化程度、英语是否熟练及活动受限程度等因素后,使用多元Logistic回归对老年人慢性病共病状况与其参与医疗决策的偏好之间的关系进行分析。结果大部分老年人喜欢主动参与医疗决策。不过,患有4种或4种以上慢性病的老年人以及患有多聚类慢性病的老年人,较少参与医疗决策。结论全科医师应鼓励患有4种或4种以上慢性病的老年人以及患多聚类慢性病的老年人参与临床决策。同时,全科医师应考虑到不同老年人有不同的参与临床决策的偏好,并且要适应他们的偏好以保证能更好地实施以患者为中心的医疗服务。 | CHI W C WOLFF J CREER R 本刊编辑部 | 2018 | 中国全科医学2018,21,2: | 2 |
| 6 | Insights into human CD34(+) hematopoietic stem/progenitor cells through a systematically proteomic survey coupled with transcriptome显示文摘 | Liu F Lu J Fan HH Wang ZQ Cui SJ Zhang GA Chi M Zhang X Yang PY Chen Z Han ZG | 2006 | 中国生物学文摘2006,20,5: | 2 |
| 7 | Auricle reconstruction with a Nickel-Titanium shape memory alloy as the framework 显示文摘 | CHI F L WANG S J LIU H J | 2007 | Laryngoscope2007,117,2: | 1 |
| 8 | Characterization of frequency stability显示文摘 | Barnes J A Chi A R Cutler L S | 1971 | IEEE Transactions on Instrumentation and Measurement1971,20,2: | 1 |
| 9 | Synthesis, characterization and liquid-crystal-aligning properties of novel aromatic polypyromellitimides bearing (n-alkyloxy)biphenyloxy side chains显示文摘 | Lee S B Shin G J Chi J H | 2006 | Polymer2006,47,19: | 1 |
| 10 | A study of the viral etiology of histiocytic necrotizing lymphadenitis(Kikuchi-Fujimoto disease)显示文摘 | Huh J Chi Hs Kim SS | 1998 | J Korean Med Sci1998,13,: | 1 |
| 11 | Does storage time influence post- thaw survival and pregnancy outcome? An analysis of 11 768 cryo- preserved human embryos显示文摘 | Riggs R Mayer J Chi TF | 2010 | Fertil Steril2010,93,1: | 1 |
| 12 | Leucine metabolism in regulation of insulin secretion from pancreatic beta cells 显示文摘 | Yang J Chi Y Burkhardt BR | 2010 | Nutr Rev2010,68,5: | 1 |
| 13 | Effect of dietary lipid level on growth performance,feed utilization and digestive enzyme of juvenile ivory shell,Babylonia areolate显示文摘 | ZHOU Q C ZHOU J B CHI S Y | 2007 | Aquaculture2007,272,1234: | 1 |
| 14 | An analysis of 733 surgical- ly treated blowout fractures 显示文摘 | Chi M J Ku M Shin K H | 2010 | Ophthalmologica2010,224,3: | 1 |
| 15 | Metal contamina-tion of vineyard soils in wet subtropics (Southern Brazil) 显示文摘 | MIRLEAN N ROISENBERG A CHIES J O | 2007 | Environmental Pollution2007,149,1: | 1 |
| 16 | A randomised controlled trial of a specific reminiscence approach to promote the well-being of nursing home residents with dementia 显示文摘 | Lai CK Chi I Kayser-Jones J | 2004 | International Psychogeriatrics2004,,16: | 1 |
| 17 | Comparison of an oil- miscible ionic liquid and ZDDP as a lubricant anti-wear additive 显示文摘 | Qu j Luo H M Chi M F | 2014 | Tribology International2014,71,: | 1 |
| 18 | Experimental study of oil-filledhigh-speed spirt forming micro-groove fin-inside tubes显示文摘 | Tang Y Chi I Y Chen J C | 2007 | Inter- national Journal of Machine Tools and Manufacturing2007,47,78: | 1 |
| 19 | Clinical implications of non-A-type NPM1 and FLT3 mutations in patients with nor-mal karyotype acute myeloid leukemia显示文摘 | PARK G CHI H S PARK S J | 2012 | Acta Haematologi- ca2012,127,2: | 1 |
| 20 | Knockdown of dishevelled-1 attenuates cy- closporine A-induced apoptosis in H9c2 cardiomyoblast cells 显示文摘 | Zhu Y Chi J Liu Y | 2013 | Mol Cell Biochem2013,374,12: | 1 |