He-Ar isotopic system of fluid inclusions in pyrite from the molybdenum deposits in south margin of North China Block and its trace to metallogenetic and geodynamic background

The helium and argon isotopic compositions of the ore-forming fluids from the molybdenum deposits such as Jinduicheng, Donggou, Shijiawan, and Sandaozhuang, which are located in the East Qinling molybdenum belt in south margin of North China Block （SMCNB）, are reported in this paper. The origin and the evolution of the ore-forming fluids and their coupled-relationships with the intra-continental collision and orogenic process of Qinling Orogen in Mesozoic-Cenozoic have been discussed. The 3He/4He and 40Ar/36Ar values （3He/4He=1.38-3.64 Ra, and 40Ar/36Ar=295.68-346.39, respectively） of the fluid inclusions in pyrite from the molybdenum deposits in East Qinling suggest that, the ore-forming fluid system is mixed by two end members. One is the high temperature deep-derived fluid congenetic with the porphyries generated by crust-mantle mixing, and the other is the low-temperature meteoric water which is rich in crustal radiogenic He with the component of atmospheric Ar. From the Pb isotopic composition, and ore-bearing potential of the porphyry and the regional stratum, we can conclude that the ore-forming materials of the deposits in the East Qinling molybdenum belt are derived from the deep source by the mixing of lower crust and upper mantle. Therefore, the formation of the molybdenum deposits in SMNCB can be related to the crust-mantle interaction, which is accompanied by the intra-continental orogenic and extension process in the post-collision period of Qinling Orogen. The granitic porphyries which are related to Mo mineralization are not simple crust-remelting type granites or S type granites, but belong to syntexis-type or mantle-derived granites, hence their formation has a profound and regional geodynamic background.     

试论何挺颖在井冈山斗争时期的军事贡献

何挺颖参加了湘赣边界秋收起义,任工农革命军第一团一连党代表。在三湾改编中,他始终支持毛泽东同志的政治主张;面对叛徒的叛变行径,他立场坚定;在龙源口等战斗中作战勇猛,特别是在黄洋界保卫战中,他指挥英明、果断,为井冈山革命根据地的创建作出了重要贡献。     

郑和下西洋与麒麟贡

明代将非洲产的长颈鹿比附为麒麟。象征圣王出世的麒麟,成为下西洋期间的重要搜求对象。整理郑和下西洋期间麒麟史料,归纳为以下数端：（1）永乐十二年（1414年）榜葛刺贡麒麟可能与郑和无关;（2）榜葛剌贡麒麟可能促使郑和第四次下西洋西进波斯湾,并促成麻林贡麒麟;（3）郑和第五、六、七次下西洋皆有麒麟史料;（4）宣德八年（1433年）之麒麟贡可能以购自天方者抵充;（5）下西洋远至东非的动机,可能是为了搜求长颈鹿等非洲特产。     

Late Cretaceous-Cenozoic exhumation history of Tiantangzhai region of Dabieshan Orogen： Constraints from （U-Th）／He and fission track analysis

Integrated fission track and (U-Th)/He analysis is carried out on 6 apatite and 6 zircon samples from a near vertical section in The Tiantangzhai region at the core of the present Dabieshan orogen. The result shows that the region experienced cooling/exhumation during the Late Cretaceousand Early Tertiary period. Age-elevation relationships for different dating systems and different minerals suggest a pulse of rapid exhumation at ～110 Ma before present, preserved in the structurally highest samples. At lower elevations, ages begin to decrease with decreasing elevation, suggesting lower exhumation rates since 90 Ma. Two periods of different exhumation rates are identified since 90 Ma. The average apparent exhumation rate for the period of 43.4—22.5 is 0.062 km/Ma, whereas that for the period of 76.4—47.4 Ma is 0.039 km/Ma.     

人工地震采油工艺技术的研究与应用

人工地震采油是通过地面可调频振源进行一定频率的振动,产生振动波,在油层发生一系列的波动效应,达到增产增注目的的一项物理法采油技术。主要对该技术的增油机理以及在辽河油田兴隆台采油厂的现场应用情况进行了评价,得出了结论。     

苏里格气田盒_8段沉积相及砂体展布特征

苏里格气田盒8段是重要含气层位。本次研究充分利用钻井岩心、录井和测井资料,对该地区沉积相和砂体展布进行分析。研究认为该段从盆地北部由北向南依次发育辫状河沉积相和毯式浅水辫状河三角洲相,辫状河沉积相包括河道亚相和洪泛沉积两种亚相,毯式浅水辫状河三角洲相包括三角洲平原亚相、三角洲前缘亚相、前三角洲亚相。对盒8段砂体展布进行研究表明,在平面上顺物源方向呈现出条带状的分布特征,厚度变化差异较大,但平面上分布较为连续。     

胡著姚补何序《章实斋先生年谱》论评

胡适《章实斋先生年谱》一书曾被称为使＂章学诚其人其学从隐晦走向昌明＂、＂大大拓展了章学诚思想学术研究的深度和广度＂的著作,实则在文献解读特别是新史学方向的引导上,存在颇多问题。《文史通义》、《校雠通义》二书迄今仍可谓是家喻户晓的＂古典名著＂,而＂六经皆史＂诸说也迄无比较公认的确解。究其始作俑者,胡适对于章学诚＂六经皆史＂的有意误解不能免责。     

何其芳：毛泽东文艺思想的实践者——兼论“泛意识形态化”阐释模式

从何其芳建国后的文学批评实践来看，他是毛泽东文艺思想的忠实实践者，其文学批评的特点可概括为“泛意识形态化”阐释模式。     

论政治信仰对何其芳诗歌创作风格的影响

政治信仰对作为个体的人,特别是有着文学信仰的文人来说有着重要意义。中国20世纪三、四十年代的政治信仰对何其芳创作风格有重要影响。在毛泽东1942年延安文艺座谈会上的讲话后,何其芳选择了文艺从属于政治和文艺为工农兵服务作为自己的政治信仰,彻底屈服于政治信仰,使他无法跳出樊笼而寻找适应新时代要求的文学体制。     

500A Mev ^56Fe-Em作用中的射弹a碎片研究

通过对500 A MeV 56Fe诱发乳胶核反应产生的射弹a碎片的出射几率及角分布进行研究,结果表明56Fe与三种靶作用产生射弹a碎片的几率整体上都是随着射弹a碎片多重数的增加而减小,即,在边缘碰撞中,铁核不论与轻靶还是重靶作用,主要产生低多重数的射弹a碎片;a粒子的投影角分布可以用单一的高斯分布进行描述;而a粒子的发射角分布要用两个不同宽度的高斯分布的叠加进行拟合.