江西盘古山-黄沙黑钨矿石英脉矿床铋硫盐矿物再研究

江西于都盘古山－黄沙的铋硫盐矿物的种属较多,前已查明的有１７种,其中有未定久铋硫盐矿物２种,主要是ＰｂＳ－Ｂｉ２Ｓ３系列和ＰｂＳ－Ａｇ２Ｓ－Ｂｉ２Ｏ３系列的铋硫盐矿物。     

Hydrodynamic accumulation of Karenia off the west coast of Florida

Blooms of the toxic dinoflagellates, Karenia spp. occur nearly annually in the eastern Gulf of Mexico with cell abundances typically >10⁵ cells L⁻¹. Thermal and ocean color satellite imagery shows sea surface temperature patterns indicative of upwelling events and the concentration of chlorophyll at fronts along the west Florida continental shelf. Daily cell counts of Karenia show greater increases in cell concentrations at fronts than can be explained by Karenia's maximum specific growth rate. This is observed in satellite images as up to a 10-fold greater increase in chlorophyll biomass over 1–2 d periods than can be explained by in situ growth. In this study, we propose a model that explains why surface blooms of Karenia may develop even when nutrients on the west Florida shelf are low. In the summer, northward winds produce a net flow east and southeast bringing water and nutrients from the Mississippi River plume onto the west Florida shelf at depths of 20–50 m. This water mass supplies utilizable inorganic and organic forms of nitrogen that promote the growth of Karenia to pre-bloom concentrations in sub-surface waters in the mid-shelf region. In the fall, a change to upwelling favorable winds produces onshore transport. This transport, coupled with the swimming behavior of Karenia, leads to physical accumulation at frontal regions near the coast, resulting in fall blooms. Strong thermal fronts during the winter provide a mechanism for re-intensification of the blooms, if Karenia cells are located north of the fronts. This conceptual model leads to testable hypotheses on bloom development throughout the Gulf of Mexico.     

MEETINGHOUSES IN THE MORMON MIND: IDEOLOGY,ARCHITECTURE, AND TURBULENT STREAMS OF AN EXPANDING CHURCH*

ABSTRACT. Early work by D. W. Meinig delimiting “The Mormon Culture Region” focused on the spread of the Church of Jesus Christ of Latter‐day Saints (lds ) in a core, domain, and sphere scheme that recognized diffusion of a fast‐growing group bent on shifting its station from cultural edge to religious mainstream. Such a changeover from fringe belief to international force lacks any widely circulated rule book. The lds and its followers today extend influence through diverse, distinct pathways: making missionaries a recognizable global force, offering education on church‐controlled university campuses, emanating wholesomeness, entering high‐security federal service, and attaining national political power. But nothing so locks in an lds message as the standard‐plan meetinghouses, in uniform styles, that mark church presence in North America and other continents. This work analyzes that architecture and examines its fit within lds expansion and presentation of self, not just in the Salt Lake City church but even as imitated by outcast outliers.     

新疆东昆仑白干湖钨锡矿床地质特征

白干湖钨锡矿床赋存在古元古界金水口群变质岩系中,矿体受北东向白干湖断裂带控制,加里东期酸性侵入岩与矿床关系密切.区内是钨元素地球化学高背景区,在各类地质体钨元素富集系数为9.57~25.30.目前共发现17条矿体,矿石类型为夕卡岩型白钨矿和石英脉型黑钨矿.矿床类型为沉积变质岩浆再造型钨锡矿床.     

Indirect Imaging of the Accretion Disk Rim in W Crucis

The eclipsing binary W Crucis belongs to the rare group of strongly interacting binaries, which are believed to be shortly after the first and rapid mass transfer between components, prior to the Algol phase. New 7-colour photometric measurements in the Geneva system are presented for this long period binary. Several consecutive cycles were covered, which revealed rather complex light curves with pronounced bumps and asymmetries in the eclipse shoulders, as well in out-of-eclipse brightness. We modelled light curves with a variant of Rutten’s 3D eclipse-mapping method, which makes it possible to indirectly image the accretion disk rim. A patchy structure has emerged, which explains the rather erratic and complex light curve and its cycle-to-cycle variations.     

The association of OH and methanol masers in W3(OH)

We present single-baseline Multi-Element Radio-Linked Interferometer Network (MERLIN) measurements of excited OH 6.0-GHz masers and methanol 6.7-GHz masers for the source W3(OH). These allow us to compare the positions of individual maser spots of these two species to ∼15 mas accuracy for the first time, and to compare these with previously published positions of ground-state OH masers near 1.7 GHz and excited-state OH masers near 4.7 GHz. There is a strong association between OH 6035-MHz and 1665-MHz masers. OH and methanol have very similar distributions, but associations of individual masers are relatively rare: most methanol 6.7-GHz masers are within 100 mas of OH 6.0-GHz masers, but only four methanol masers are within 15 mas of an OH 6.0-GHz maser. There are no correspondences of either species with excited OH 4.7-GHz masers. Zeeman splitting of the 6.0-GHz OH lines indicates an ordered magnetic field ranging from 3.2 to 14.4 mG. The magnetic fields estimated from co-propagating masers such as 6035 and 1665 MHz are generally in good agreement with each other.     

1965 light curves of BV Dra and BW Dra

DifferentialB-band photometry of BV Dra and BW Dra, obtained in 1965, is presented. Times of primary and secondary minima are derived and combined with published times for a period study. Period variations are found in both binaries and magnetic cycles are proposed as an explanation. The cycle length is 19 years in BV Dra and 8 years in BWDra On leave from Dyer Observatory, Vanderbilt University, Nashville, Tennessee.     

台维斯学术思想的继承与突破

本文回顾了百年来地貌学思想的发展历史,论述了台维斯理论体系对地貌学的贡献及其现实意义,分析了本世纪四十至六十年代地貌学取得突破性进展的原因、特点和标志。     

泡塑吸附痕量钨钼铌钽锑铼研究

研究了泡塑在三种介质中对钨、钼、铌、钽、锑、铼的吸附行为。试验表明：介质、络离子类型与性质及其变化决定了泡塑吸附定量、动力学特性及其机理，并由此建立了可供分析实践的几种泡塑吸附体系。