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| 1 | 贵州剑河寒武系清虚洞组掘头虫类三叶虫的发现显示文摘贵州剑河八郎寒武系黔东统清虚洞组由泥岩和灰岩组成,厚约300m,沉积相属于黔东陆棚深水过渡相区沉积类型,不同于黔西以浅水台地相白云岩和灰岩为主的典型清虚洞组类型。该组三叶虫化石丰富,包括莱德利基虫目Redlichia(Redlichia)guizhouensis,R.(R.)nobilis;褶颊虫目对沟虫科Eoptychoparia jinshaensis,Antagmus dapingensis,褶颊虫科Nangaops brevis;耸棒头虫目叉尾虫科Olenoides hupeiensis,Kootenia sp.,以及掘头虫类中的掘冠虫科Ovatoryctocara sp.,掘头虫科Changaspis elongata,C.cf.elongata和飞龙山虫科Duyunaspis cf.duyunensis;共计9属7种2相似种及2未定种。本文描述了其中具重要地层意义的掘头虫类三叶虫3属4种,包括2未定种。结果表明,在黔东清虚洞组发现的掘头虫类Changaspiselongata和Duyunaspis cf.duyunensis,此前仅报道于该组之下的杷榔组,现这两种的层位可上延至清虚洞组上部;同时显示该组Ovatoryctocara sp.和凯里组下部的Ovatoryctocara granulata比较相似,有可能是Ovatoryctocara granulata的祖先种。掘头虫类三叶虫的新资料将有助于促进国际寒武系第3统底界层型剖面及点位(GSSP)的进一步研究。 | 杨兴莲 赵元龙 彭进 杨宇宁 杨凯迪 | 2010 | 高校地质学报2010，16，3： | 23 |
| 2 | 贵州剑河八郎“清虚洞组”Protoryctocephalus Chow(Zhou) in Lu et al.,1974b的初步研究显示文摘三叶虫掘头虫科古掘头虫属Protoryctocephalus Chow(Zhou)in Lu et al.,1974b由周志毅根据贵州丹寨南皋寒武系乌训组的标本命名,至今共有4个种:Protoryctocephalus wuxunensis,P.balangensis,P.elongatus,P.arcticus。贵州剑河八郎'清虚洞组'产其中的2个种:P.elongatus及P.arcticus。P.elongatus首现于'清虚洞组'上部,上延至凯里组下部;P.arcticus命名于格陵兰北部Peary Land的Henson Gletscher组中部,位于寒武系第5阶首现分子Oryctocephalus indicus层位之下,为格陵兰北部Peary Land的Henson Gletscher组与凯里组下部及'清虚洞组'上部的地层对比提供了化石依据,有助于寒武系第5阶地层对比。八郎'清虚洞组'P.elongatus及P.arcticus的发现具有演化及国际地层对比意义。 | 罗绣春 赵元龙 彭进 杨宇宁 潘永金 | 2014 | 古生物学报2014，53，3： | 11 |
| 3 | 凹坑形仿生非光滑表面滑靴副的动压润滑计算显示文摘通过建立凹坑形仿生非光滑表面滑靴副的全水动压润滑模型,采用CFD方法及正交试验法研究工况参数(膜厚、转速)及几何参数(坑形、面积率、深径比)对流体动压润滑性能和水膜承载力的影响规律。研究结果表明:凹坑表面产生的承载效应是其静压和动压分布的综合,其中具有凹坑形仿生非光滑表面的斜盘与滑靴相对运动而引起的动压效应起主要作用;工况参数和几何参数对水膜承载力的影响顺序为转速>膜厚>坑形>深径比>面积率;膜厚30μm、转速3 000 r/min、面积率20%、深径比0.5的三角柱坑为最优水平组合。该研究结果可为高压海水轴向柱塞泵仿生非光滑表面斜盘的设计提供参考。 | 梁瑛娜 高殿荣 毋少峰 | 2015 | 机械工程学报2015，51，24： | 11 |
| 4 | 带有不同否定的模糊命题逻辑的形式演绎系统显示文摘对于模糊知识及其否定关系,潘正华指出应该明确地分为矛盾否定关系、对立否定关系和中介否定关系,并建立了一种具有矛盾否定、对立否定和中介否定的模糊集FScom(fuzzy sets with contradictory negation,opposite negation and medium negation),随后建立了一种改进的模糊集IFScom(improved FScom)。为给模糊集FScom及其改进IFScom提供一种逻辑工具,提出了一种带有矛盾否定、对立否定和中介否定的模糊命题逻辑演算系统FPcom,并在给定无穷值语义赋值模型以及可满足性定义下,证明了FPcom具有可靠性和完备性。FPcom在一定意义上可视为对中介命题演算系统的改进。 | 张胜礼 | 2014 | 计算机科学与探索2014，8，4： | 6 |
| 5 | Carbon-Isotope Excursions Recorded in the Cambrian System,South China:Implications for Mass Extinctions and Sea-Level Fluctuations显示文摘Cambrian carbonates with abundant fossils of agnostoid trilobites deposited on the southern slope(Jiangnan slope belt) of the Yangtze Platform and in the Jiangnan deepwater basin are well exposed in the Wangcun Section of western Hunan, South China, and in the Duibian A Section of western Zhejiang, southeastern China, respectively. To better understand the response of carbon-isotope excursions to depositional environment changes, mass extinctions and eustatic events, we collected 530 carbonate samples in fresh roadcut exposures of the two measured sections for analysis of carbon and oxygen isotopic compositions. Data of δ13 C from the Wangcun Section, western Hunan, South China, demonstrate that the Cambrian carbon-isotope profile includes three remarkable positive excursions CPEwc-1, 2, 3 in the Upper Series 2, in the Lower and in the Middle Furongian Series. Three distinctive negative excursions CNEwc-1, 2, 3 were separately tested in the Lower Terreneuvian Series, Lower Series 3 and in the Upper Furongian Series. Similarly, in the corresponding horizons in the Duibian A Section, Zhejiang Province, southeastern China, three positive excursions CPEdb-1, 2, 3 and three negative excursions CNEdb-1, 2, 3 also have been discovered. We interpret these significant carbon-isotope excursions as being associated with enhanced biogenic productivity, mass extinctions and eustatic events. | Jingxun Zuo Shanchi Peng Yuping Qi Xuejian Zhu Gabriella Bagnoli Huaibin Fang | 2018 | Journal of Earth Science2018，29，3： | 6 |
| 6 | 贵州铜仁地区石竹—牙溪一带熬溪组第Ⅰ段上部三叶虫组合的特征及其意义显示文摘贵州铜仁地区石竹—牙溪一带的熬溪组自下而上分为3个岩性段,第Ⅰ段主要由泥质白云岩和细晶白云岩组成,上部产较多的三叶虫,计6属(2亚属),3种、2未定种及1新种,分别为Probowmania (Mufushania) nankingensis、Probowmania (Pr.) balangensis、Balangcunaspis(B.)transversus、Oryctocephalops sp.、Kooteniasp.和Deiradonyx tongrenensis sp.nov.。其中Deiradonyx见于澳大利亚北部Templetonian下部的Alexandris层,Oryctocephalops主要产于西伯利亚Amginian下部,两者时代均为早寒武世;Kootenia主要见于下寒武统;其他三叶虫均为凯里组下部常见的分子。上述三叶虫的发现改变了熬溪组为中寒武统的认识,熬溪组是跨中、下寒武统的岩石地层单元。熬溪组第Ⅰ段上部层位为下寒武统顶部,与紧邻的第Ⅱ段下部的含钾页岩共同组成凯里组。 | 杨洪 傅晓平 赵元龙 彭进 杨兴莲 李丙霞 | 2009 | 地质通报2009，28，5： | 3 |
| 7 | Biomarker evidence for biotic and environmental change across the Cambrian Series 2–Series 3 boundary at the Wuliu- Zengjiayan section, Guizhou, China显示文摘The Wuliu-Zengjiayan section in Jianhe County, Guizhou Province, China has been suggested as a potential Global Stratotype Section and Point(GSSP) for the defined base of Cambrian Series 3. A molecular organic geochemical study on the Cambrian Series 2Series 3 boundary interval was carried out to reveal the biotic and environmental change during this transition. The hydrocarbons extracted from the Kaili Formation were proved to be indigenous. The various geochemical proxies such as biomarker parameter, δ13Corg, atomic H/C value of kerogen, and TOC content, co-vary along with the sedimentary column, and show a quick and significant change just across the Cambrian Series 2Series 3 boundary. The less abundance of isoprenoid hydrocarbons, the relative enrichment of midchain monomethyl branched alkanes(mmb-alkanes), the relatively negative value of δ13Corg, and the higher TOC contents may suggest that the upper Cambrian Series 2 was deposited in a relatively reducing environment with a higher organic input from cyanobacteria-predominated benthic microbial mats. On the other hand, the relative enrichment of isoprenoid hydrocarbons, the less abundance of mmb-alkanes, the relatively positive value of δ13Corg, the lower TOC contents, and the lower atomic H/C values of kerogen are combined to indicate an enhanced phytoplankton production and an increased oxygen content and nutrients in the ocean during the early Cambrian Series 3, which could have benefited the explosion of the Kaili Biota. The Wuliu-Zengjiayan section may provide a typical case to understand the co-variation of marine microbe, animal, and environment. | WANG ChunJiang ZHAO YuanLong PENG Jin YANG XinLian BAI Jie LIU Yue CHEN Tao | 2014 | Science China Earth Sciences2014，57，11： | 2 |
| 8 | 湘西寒武系鼓山阶底界附近碳同位素组成演化趋势显示文摘湘西王村剖面寒武系鼓山阶(Drumian)底界附近碳酸盐岩的δ^(13)C值分布于0.5‰~–3.0‰之间,δ^(18)O值分布于–4.0‰~–12.0‰之间,少数碳酸盐岩样品的δ^(18)O值低于–10.0‰,指示岩石经历成岩期后蚀变作用影响,但δ^(13)C、δ^(18)O之间的非协变关系指示碳同位素组成比较稳定。鼓山阶底界附近δ^(13)C表现为负漂移演化趋势,负漂移幅度为4.0‰,最低值出现在鼓山阶底界之上9 m处,与美国犹他州Drum Mountains剖面鼓山阶负漂移(DICE)出现的位置基本一致,负漂移幅度可与美国内华达州Desert Range剖面、Panaca Hills剖面、犹他州House Range剖面、Drum Mountains剖面对比,表明DICE负漂移具有洲际可对比性,可作为寒武系鼓山阶划分与对比的工具。湘西王村剖面寒武系第二统顶部清虚洞组、第三统底部敖溪组白云岩为海平面下降期形成的进积序列,寒武系第三统花桥组下部黑色泥灰岩、钙质泥岩夹富含黄铁矿结核的硅质条带为深水斜坡相沉积,超覆于白云岩之上。因此,寒武系鼓山阶底部附近的DICE负漂移发生在寒武纪第三世鼓山期海侵时期,与美国Drum Mountains剖面鼓山阶DICE负漂移所处的沉积环境相似。 | 左景勋 彭善池 朱学剑 方怀宾 祁玉平 陈泳霖 | 2018 | 地球化学2018，47，5： | 1 |
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