Discovery of Pyrrhotite-Chalcopyrite-Bearing Amphibole Megacrysts in Tongling Area, Anhui Province

Some pyrrhotite-chalcopyrite-bearing amphibole megacrysts (including pyroxene megacrysts) were discovered in Mesozoic augite diorite-porphyrite at Caoshan in Tongling area, Anhui Province. The amphibole megacrysts, belonging mainly to pargasite and magnesiohastingsite, are characteristic of the amphibole composition derived from mantle and crystallized in lower crust. In general, the aggregates of pyrrhotite-chalcopyrite take the shapes of cylinder and sphere. Three occurrences have been recognized in the amphibole megacrysts: parallel linear, bunchy and scattered. The unique cylinder-like shape of the aggregates and remarkable Ni-poor sulfides in Caoshan are distinctively different from the spherical Ni-rich sulfides in pyroxene megacrysts and any other kinds of megacrysts. In terms of composition, the amphibole megacrysts and their sulfides in Caoshan are similar to those in the pyroxenite xenoliths in Qilin, Guangdong Province. In terms of origin, the pyrrhotite-chalcopyrites as exsolution products resulted from the subsolidus re-equilibration of sulfide solid solution within amphibole megacrysts.amphibole megacrysts were first discovered inside and outside China. This discovery is important for the study of regional magma evolution and its associated mineralizations and ore sources as well.     

一九三五年八月德国气象学会会议纪要

德国气象学会,每两年举行会议一次,其先已於一九三一年及一九三三年分别在维也纳及汉堡举行。今年八月二十五日至二十七日为第十九次会期,假但泽高等工业学校开会,与会者除德人而外颇多外人。其演讲多属天气与大气之各种现象,兹择要略纪如下。会议开幕时,由主席枢密顾问明兴Schmauss教授演讲“气象学之术语”。略谓:吾人皆知气象界须有统一之国际符号,以为发表工具,使逐日印行之天气图与各处之年报,均有同一之记载。教授继谓气象学上基本术语,应有对外对内之分,前者吾人仅需知其国际简单意义,而後者则更需通晓其文字之说明。此外,吾人更须切实互助,     

Persistent halogenated compounds in black guillemots (Cepphus grylle) from Greenland--levels, compound patterns and spatial trends

Twenty-seven black guillemot eggs and 39 livers were analysed for polychlorinated biphenyls (PCBs), chlorinated pesticides including chlordane-related compounds and toxaphene, and polybrominated diphenylethers (PBDEs). The samples were collected at Qeqertarsuaq (Godhavn, West Greenland) and Ittoqqortoormiit (Scoresbysund, East Greenland). The concentrations of halogenated organic compounds in samples from East Greenland were somewhat higher than the corresponding concentrations from West Greenland. Differences in compound patterns were found between West and East Greenland, with higher percentages of the heavier PCB molecules, p,p(')-DDE and alpha-HCH in the samples from Ittoqqortoormiit. Similarly, different levels and different compositions were observed for eggs and livers. The eggs had generally higher concentrations of all compounds as well as higher percentages of CHB-50, CHB-62 and alpha-HCH than liver samples from the same area. Dividing the liver samples into age groups revealed increasing concentrations with age.     

大尺度季风环流的季节变化

一、经向环流 850hPa和200hPa上的逐月大尺度季风环流在早先许多研究中已有论述(如Krishnamurti,1985年)。Krishnamurti指出:东亚西南季风地面气流从5月份开始发展;并在7、8月份到达东亚最北部;9月间季风气流撤回到赤道15°以内热带深处。根据中国科学院大气物理研究所提供的10年月平均资料计算得出的结果表明,4月间垂直环流是由赤道附近和中国中部的上升运动这两种环型组成。赤道附近的上升运动可能与马来西亚半岛对流活动和降雨有联系。实际风大小     

The possible influences of the increasing anthropogenic emissions in India on tropospheric ozone and OH

A 3-D chemical transport model (OSLO CTM2) is used to investigate the influences of the increasing anthropogenic emission in India. The model is capable of reproducing the observational results of the INDOEX experiment and the measurements in summer over India well. The model results show that when NOx and CO emissions in India are doubled, ozone concentration increases, and global average OH decreases a little. Under the effects of the Indian summer monsoon, NOx and CO in India are efficiently transported into the middle and upper troposphere by the upward current and the convective activities so that the NOx, CO, and ozone in the middle and upper troposphere significantly increase with the increasing NOx and CO emissions. These increases extensively influence a part of Asia, Africa, and Europe, and persist from June to September.     

Petrology and Geochemistry of Post-Collisional Early Miocene Volcanism in the Karacada? Area (Central Anatolia, Turkey)

Early Miocene (ca.?21–18 Ma) volcanism in the Karacada? area comprises three groups of volcanic rocks: (1) calcalkaline suite (andesitic to rhyolitic lavas and their pyroclastics), (2) mildly-alkaline suite (alkali basalt, hawaiite, mugearite, benmoreite and trachydacite), and (3) a single trachyandesitic flow unit. Field observations, 40Ar/39Ar ages and geochemical data show that there was a progressive temporal transition from group 1 to 3 in a post-collisional tectonic setting. The calcalkaline suite rocks with medium-K in composition resemble those of subduction-related lavas, whereas the mildly-alkaline suite rocks having a sodic tendency (Na2O/K2O=1.5–3.2) resemble those of within-plate lavas. Incompatible element and Sr-Nd isotopic characteristics of the suites suggest that the lithospheric mantle beneath the Karacada? area was heterogeneously enriched by two processes before collision: (1) enrichment by subduction-related processes, which is important in the genesis of the calcalkaline volcanism, (2) enrichment by small degree melts from the astenosphere, which dominates the mildly alkaline volcanism. Perturbation of the enriched lithosphere by either delamination following collision and uplift or removal of the subducted slab following subduction and collision (i.e., slab breakoff) is the likely mechanism for the initiation of the post-collision volcanism.     

盐渍土壤的介电特性

采用Ｌ波段介电探针，对沙壤，砂质粘土和粘土三种不同性质的土壤作了详尽的实验室实验，结果显示，土壤的盐度同介电常数的实无关，而同虚部相关，并随盐度的增加而增加。还表明，实数部分更多的依赖于土壤的湿度，虚数部分取决地土壤的盐度，土壤的含钠性对介电常数的实部和虚部都无影响。本研究展示了Ｌ波段对土壤盐度的微波响应。同时说明，在湿壤的条件下，采用Ｌ波段，将盐壤从钠壤中分离出来的可能性。     

一个三维水动力学模型及其在水环境中的适用性试验

发展了一个三维水动力学模型.该模型在水底磨擦项计算中,采用了流速的平方根法;在湍流扩散系数的估算中,采用了带稳定度函数的参数化方案;对垂直方向上的坐标进行了压缩,引入σ坐标;对时间变量则采用了分离模式技术,即外部模式(快过程)与内部模式(慢过程);而求解外部模式时,采用了显式一隐式格式交错法(ADI),从而使模型不仅计算时间缩短,且可应用于水很深而水平空间尺度很小,又有热力分层的水域中.最后作为该模型的一个实用性试验,选择了美国犹他州East Canyon水库,利用该模型探讨了温跃层对风、人流及出流变化的响应情况.     

Evaluation of Estrogenic Activity and Measurement of EDCs in Wastewater Treatment Plants

1IntroductionDuringthe past several years,concern hasincreasedover the potential pollution of watershed by estrogeniccompounds,including steroidal hormones fromhumanand ani mal sources.Effluents from wastewater treat-ment plants are sources of endocrine-d…