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| 1 | Field Relationships,Geochemistry,Zircon Ages and Evolution of a Late Archaean to Palaeoproterozoic Lower Crustal Section in the Hengshan Terrain of Northern China显示文摘The Hengshan complex forms part of the central zone of the North China Craton and consists predominantly of ductilely-deformed late Archaean to Palaeoproterozoic high-grade, partly migmatitic, granitoid orthogneisses, intruded by mafic dykes of gabbroic composition. Many highly strained rocks were previously misinterpreted as supracrustal sequences and represent mylonitized granitoids and sheared dykes. Our single zircon dating documents magmatic granitoid emplacement ages between 2.52 Ga and 2.48 Ga, with rare occurrences of 2.7 Ga gneisses, possibly reflecting an older basement. A few granitic gneisses have emplacement ages between 2.35 and 2.1 Ga and show the same structural features as the older rocks, indicating that the main deformation occurred after ~2.1 Ga. Intrusion of gabbroic dykes occurred at~1920 Ma, and all Hengshan rocks underwent granulite-facies metamorphism at 1.88-1.85 Ga, followed by retrogression, shearing and uplift.We interpret the Hengshan and adjacent Fuping granitoid gneisses as the lower, plutonic, part of a late Archaean to early Palaeoproterozoic Japan-type magmatic arc, with the upper, volcanic part represented by the nearby Wutai complex. Components of this arc may have evolved at a continental margin as indicated by the 2.7 Ga zircons. Major deformation and HP North China Craton collided to form the Trans-North China orogen. Shear zones in the Hengshan are interpreted as major lower crustal discontinuities post-dating the peak of HP metamorphism, and we suggest that they formed during orogenic collapse and uplift of the Hengshan complex in the late Palaeoproterozoic (<1.85 Ga). | A. KRONER S.A. WILDE P.J. O'BRIEN LI Jianghai C.W. PASSCHIER N.P. WALTE LIU Dunyi | 2005 | Acta Geologica Sinica(English Edition)2005,79,5: | 91 |
| 2 | 中国西部元古代蓝片岩带——世界上保存最好的前寒武纪蓝片岩显示文摘阿克苏附近所发现的元古界阿克苏群为一完整的蓝片岩-绿片岩系列,我们通过野外调查肯定了这一认识,并认为它是高压-温相的变质块体,长40km,宽约2.5km.该变质岩由强烈片理化的绿泥石-黑硬绿泥石石墨片岩、黑硬绿泥石-多硅白云母片岩、绿片岩、蓝片岩及少量石英岩、变铁质岩组成.原岩包活泥质岩、砂岩、基性玻屑凝灰岩、块状熔岩、枕状熔岩及少量深海沉积物.蓝片岩的矿物组合:青铝闪石-绿帘石-绿泥石-钠长石-石英-阳起石.阿克苏群为世界上真正的前震旦纪蓝片岩之一,其变质年龄至少有800Ma. | 肖序常 格雷厄姆 S.A. | 1990 | 新疆地质1990,8,1: | 37 |
| 3 | 重组活化因子Ⅶ在急性颅内出血中的应用 | Mayer S.A. Brun N.C. Begtrup K. 郭俊 | 2005 | 世界核心医学期刊文摘(神经病学分册)2005,0,8: | 32 |
| 4 | 西湖硅藻对桡足类浮游动物繁殖的影响显示文摘本文报道从杭州西湖筛选分离的两种淡水硅藻,即尖针杆藻Synedraacus和谷皮菱形藻Nitzschiapalea对西湖两种淡水浮游桡足类,即近亲拟剑水蚤Paracyclopsaffinis和大尾真剑水蚤Eucyclopsmucrroides卵孵化率的影响。结果表明,在较高密度的硅藻培养液(1.2×104~5.4×104个/cm3)中培养的桡足类动物,其卵的孵化率比生活在自然水体中的有明显降低,并发现该密度的实验硅藻对其摄食者——桡足类的母体也产生一定的毒害作用。该实验结果与已报道的某些海洋硅藻对海洋桡足类存在毒害作用的结果,对水域生态系食物链(网)中硅藻作用的传统概念提出了挑战,对水域生态学研究提出了新课题。 | 宁修仁 阮积惠 史君贤 王一军 S.A.布莱 | 1998 | 东海海洋1998,16,1: | 11 |
| 5 | 微波在矿业中的应用显示文摘介绍了微波在矿业的粉碎、干燥、浮选、焙烧等工艺中的应用及发展潜力。 | S.A.施尤伊 | 2003 | 矿业工程2003,1,6: | 11 |
| 6 | 绿豆叶片提取液对玉米螟赤眼蜂寄生率的影响显示文摘赤眼蜂在寄主定向和接受行为方面,可利用多种来源于寄主的化学刺激物——利它素,而在寄主栖息地的定向行为中,则利用植物产生的化学刺激物——互利素,周大荣等发现玉米与匍匐型绿豆间作可提高玉米螟赤眼蜂Trichogramma ostriniae亚洲玉米螟Ostrinia furnacalis 卵的寄生率。为明确这一机制,在温室条件下就绿豆(匍匐、直立型)叶片提取液对玉米螟赤眼蜂寄生率的影响进行了初步研究。 | 王振营 周大荣 Hassan S.A. | 2000 | 植物保护学报2000,27,2: | 8 |
| 7 | 微波在矿业工程中的应用显示文摘微波是频率为 0 3~ 30 0GHz的电磁波 ,它在金属和一些物质中发生反射 ,引起分子振动 ,从而产生热量。本文叙述了微波在矿业上应用的可能性和优点。较详细地介绍了微波在矿石碎磨、干燥、炭的再生、浮选和焙烧中的应用。 | S.A.塞伊 汪镜亮 肖力子 | 2002 | 国外金属矿选矿2002,39,9: | 7 |
| 8 | Kinetics of chemical leaching of chalcopyrite from low grade copper ore: behavior of different size fractions显示文摘The kinetics of the chemical leaching of copper from low grade ore in ferric sulfate media was investigated using the constrained least square optimization technique. The experiments were carried out for different particle sizes in both the reactor and column at constant oxidation-reduction potential (Eh), pH values, and temperature. The main copper mineral was chalcopyrite. About 40% of Cu recovery is obtained after 7 d of reactor leaching at 85℃ using -0.5 mm size fraction, while the same recovery is obtained at 75℃ after 24 d. Also, about 23% of Cu recovery is obtained after 60 d of column leaching for +4--8 mm size fraction whereas the Cu recovery is as low as about 15% for +8--12.7 and +12.7--25 mm size fractions. A 4-stage model for chalcopyrite dissolution was used to explain the observed dissolution behaviors. The results show that thick over-layers of sulphur components cause the parabolic behavior of chalcopyrite dissolution and the precipitation of Fe3+ plays the main role in chalcopyrite passivation. In the case of coarse particles, transformation from one stage to another takes a longer time, thus only two stages including the initial reaction on fresh surfaces and S0 deposition are observed. | H. Naderi M. Abdollahy N. Mostoufi M.J. Koleini S.A. Shojaosadati Z. Manafi | 2011 | International Journal of Minerals,Metallurgy and Materials2011,18,6: | 6 |
| 9 | 温室条件下玉米螟赤眼蜂扩散距离及日活动节律显示文摘在温室条件下,对玉米螟赤眼蜂的扩散距离和活动节律进行了研究。结果表明,在距释放点1~6m范围内,玉米螟赤眼蜂主要在2m范围内扩散飞行,少量个体可扩散4~6m远,这种扩散是渐进的、不连续的。距释放点1m和2m植株上寄主卵块和卵粒寄生率与4m和6m处的寄生率存在明显差异。玉米螟赤眼蜂的日活动节律受温度影响,低于18℃时赤眼蜂基本不活动,高于20℃时活动趋盛。日落后即使温度适宜,赤眼蜂亦基本停止活动,赤眼蜂的日活动高峰在11:00~18:00(夏令时)。植株高度不影响赤眼蜂在植株间的扩散。 | 王振营 周大荣 Hassan S.A. | 2000 | 植物保护学报2000,27,1: | 6 |
| 10 | 用易位系定位豌豆无蜡粉突变基因w-2显示文摘用扫描电子显微镜研究了豌豆无蜡粉突变体w2蜡粉的超微结构。结果表明,突变体植株只在小叶上表面覆盖有正常的蜡粉,而其它部分蜡粉明显减少或没有。利用1套7个豌豆染色体易位系,对无蜡粉突变基因w2进行了染色体定位。结果表明,w2基因位于豌豆第7染色体短臂上。 | 刘富中 gostimskii S.A. | 1999 | 园艺学报1999,26,2: | 5 |
| 11 | 肥厚型心肌病患者动态心电图上心律失常的类型及其预后预测意义 | Adabag A.S. Casey S.A. Kuskowski M.A. 腾增辉 | 2005 | 世界核心医学期刊文摘(心脏病学分册)2005,0,8: | 5 |
| 12 | Accurate modelling of the crush behaviour of thin tubular columns using material point method显示文摘In this paper,we apply the material point method(MPM),also known as a meshfree method,to examine the crush behaviour of thin tubular columns.Unlike the finite element method,randomly-distributed-weak-particle triggers were used to account for the deformation behaviour of collapse modes.Both symmetric and asymmetric modes of deformation and their associated mean collapse loads are determined for an elasto-plastic constitutive law describing the tubular columns.Attention was devoted to the accuracy and the convergence of the MPM simulation,which is determined by the number of the particles and the size of the background cells used in our explicit solver.Furthermore,a novel contact approach was adopted to establish the crush behaviour of the tubular columns.Two aspects of the work were accordingly examined,including three different crush velocities(5,10 and 15 m/s) and varied geometrical features of the tube(t/d and l/d) based on the deformation history.The results of our model,which were compared with existing analytical predictions and experimental findings,identify the critical geometric features of the tubular columns that would dictate the deformation mode as being either progressive collapse or following Euler's buckling mode. | YANG PengFei MEGUID S.A. ZHANG Xiong | 2013 | Science China(Physics,Mechanics & Astronomy)2013,56,6: | 4 |
| 13 | Search for the dark photon in π 0 decays显示文摘 | J.R. Batley G. Kalmus C. Lazzeroni D.J. Munday M.W. Slater S.A. Wotton | 2015 | Physics Letters B2015,,: | 3 |
| 14 | 希宾铁燧石公司自磨机生产能力的提高显示文摘希宾铁燧石公司选矿厂有9个磨矿系列,采用10.97m×4.57m湿式自磨机。多年来,自磨机生产能力较低,限制了矿山能力的发挥。为此,克利夫兰-克利夫斯公司及希宾铁燧石公司一直致力于提高自磨机能力的研究。本文简要介绍了主要研究成果及改进措施─—对自磨机筒筛的筛上产品进行干选和破碎。以此方案改造一个磨矿系列后取得良好效果:自磨机能力提高15.5%,单位矿石电耗降低10%。为此,希宾铁燧石公司决定,对所有的磨矿系列进行改造。 | 张光烈 S.A.埃尔姆奎斯特 R.H.贝赫林德 | 1994 | 国外金属矿山1994,19,8: | 3 |
| 15 | 使用合成絮凝剂和生物絮凝剂絮凝粉煤显示文摘煤絮凝一般通过加入工业上现有的聚合絮凝剂来完成,近来的实验表明,也可以使用从微生物中取得的生物聚合物。生物聚合物能有效地絮凝煤,并使煤更加疏水,可利用疏水性的增加分离煤絮团,也可用来降低絮凝煤的含水量。在这方面,利用生物聚合物和合成絮凝剂对粉煤进行了絮凝试验和沉降试验。对实验结果作了讨论,并对随时间而变化的粉煤沉降提出一种迁移模型。 | A.M.雷查 M.米斯拉 S.A.戴维斯 R.W.史密斯 马淮湘 | 1998 | 国外选矿快报1998,,14: | 3 |
| 16 | 螺钉内固定和双极股骨头置换在治疗老年移位的股骨颈骨折中的比较显示文摘背景:内固定和关节置换是治疗老年移位的股骨颈骨折的两种主要选择。最优选择仍存在争议。我们利用挪威髋部骨折记录,比较治疗移位的股骨颈骨折中股骨头置换和螺钉内固定的效果。方法:对4335例年龄超过70岁的有移位的股骨颈骨折患者治疗进行比较,其中1823例行内固定、2512例行股骨头置换,随访周期至少12个月。分别分析1年死亡率、再次手术例数以及第4和12个月患者疼痛、满意率和生活质量自我评估。另外,对认知障碍和行走能力下降的患者进行次级分析。结果:在股骨头置换组中,只应用同代的双极假体,其中现代柄和羟基磷灰石涂层的非骨水泥型假体占移植物的20.8%(522例)。两组一年死亡率无明显差别(内固定组27%,关节置换组25%,p=0.76)。在随访期内,内固定组412例(22.6%)接受二次手术,股骨头置换组72例(2.9%)接受二次手术。12个月后,内固定组相对股骨头置换组疼痛发生更高(平均分,29.9比19.2),手术满意度更差(平均分,38.9比25.7),生活质量更差(平均分,0.51比0.60)。所有差异均有统计学意义(p〈0.001)。对于认知障碍的患者,股骨头置换在第12个月时可以提供更好的功能结果(p〈0.05)(EuroQol主观视觉评分显示疼痛小,手术结果的高满意率和高质量的生活)。结论:老年有移位的股骨颈骨折应行股骨头置换治疗。 | By J.-E. Gjertsen T Vinje, MD L.B. Engeseter S.A. Lie, MSc L.I. Havelin O. Fumes J.M. Fevang 宋扬(译) 韩一生(译) | 2010 | 中华骨科杂志2010,30,9: | 3 |
| 17 | Failure analysis in postbuckled composite T-sections显示文摘 | A.C. Orifici S.A. Shah I. Herszberg A. Kotler T. Weller | 2008 | Composite Structures2008,,1: | 3 |
| 18 | A WebGIS and geodatabase for Florida’s wetlands显示文摘 | V. Mathiyalagan S. Grunwald K.R. Reddy S.A. Bloom | 2004 | Computers and Electronics in Agriculture2004,,1: | 3 |
| 19 | 金属蠕变与蠕变破坏理论综述显示文摘本文对金属在均匀单向与复杂应力状态下的蠕变与蠕变破坏行为及结构物蠕变下持久性发展了系统的试验与理论研究。 在试验研究中本文考虑了各种金属在恒应力与变应力下的行为,应力集中,加载方式对蠕变破坏的影响;同时还提出了材料的结构损伤的新的量测方法。 | Shesterikov S.A. Lokochtchenko A.M. 黄克智 | 1991 | 力学学报1991,23,2: | 3 |
| 20 | Pharmacokinetics of eugenol in rainbow trout ( Oncorhynchus mykiss )显示文摘 | S.A. Guénette F.C. Uhland P. Hélie F. Beaudry P. Vachon | 2007 | Aquaculture2007,,1: | 2 |