基于容器技术的天文应用软件自动部署方法

平方千米阵列即将开始建设,各子工作包也进入关键设计评估阶段。基于云与容器技术是平方千米阵列科学数据处理器未来可能采用的平台技术。针对超大规模海量数据处理面临的天文应用软件快速部署、运行与实测要求,充分考虑天文应用软件运行环境复杂、云计算环境下超大规模计算集群部署困难等问题,系统研究并给出了一种使用容器技术的天文应用软件通用自动部署方法。以目前较为常用的可见度函数校准软件SAGECaL为例,首先分析了SAGECaL的相关特性和分布式部署方面存在的困难,进而给出了基于容器技术的SAGECaL分布式集群的自动部署方法。实验结果表明,自动部署方法极大地提高了SAGECaL分布式集群的部署效率,满足项目组承担平方千米阵列科学数据处理器相关测试工作所需要的基础平台部署与切换等需求,同时也为其它天文软件在云端的快速部署与执行提供了有益的思路。     

Location choices of Chinese enterprises in Southeast Asia: The role of overseas Chinese networks

Journal of Geographical Sciences - With the implementation of the “Going out” strategy and the Belt and Road Initiative, China’s investments have become increasingly influential...     

广州城市流浪乞讨者的空间管治与日常生活实践

以广州流浪乞讨者为研究对象,通过深度访谈等质性研究方法,解读针对流浪乞讨者的空间管治政策与手段,分析流浪乞讨者的日常生活实践与生境协商。研究发现：在地方城市政策对流动性与公共秩序限制的双重压力下,在流浪乞讨者的日常生活实践中,不仅有针对管治行动者而刻意为之的特殊营建,亦有基于程式化生活流程对自我身份认同的重塑与真情实感的展演。地方政府基于空间目标的救助与真实存在的日常生活实践存在着一种张力。研究关注了城市边缘群体日常生活对地理意义的主动塑造过程,对全面理解并规范管理中国城市流浪乞讨现象具有借鉴意义。     

A Gaussian process regression-based sea surface temperature interpolation algorithm

The resolution of ocean reanalysis datasets is generally low because of the limited resolution of their associated numerical models. Low-resolution ocean reanal...     

西昆仑-喀喇昆仑造山带锂矿成矿特征与成矿规律初探

西昆仑- 喀喇昆仑造山带中生代花岗伟晶岩相当发育,主要分布于麻扎- 康西瓦缝合带以南的喀喇昆仑造山带,构成了西自木吉—塔什库尔干,东到大红柳滩长达600 km的喀喇昆仑稀有金属成矿带。通过多年的研究,本文对西昆仑- 喀喇昆仑造山带37处稀有金属矿床(点)进行了全面系统的梳理,认为喀喇昆仑- 喀喇昆仑造山带表现为“西铍东锂”的格局,稀有金属成矿年龄集中213~206 Ma。将喀喇昆仑造山带稀有金属成矿带划分为木吉- 塔什库尔干稀有金属成矿亚带、赛图拉- 大红柳滩稀有金属成矿亚带,从西向东可划定4个矿化集中区：木吉- 布伦口稀有金属集中区、塔什库尔干- 塔吐鲁沟稀有金属矿化集中区、康西瓦稀有金属矿化集中区、大红柳滩- 白龙山稀有金属矿化集中区。同时,认为西昆仑- 喀喇昆仑造山带西段下一阶段的找矿可放在西合休南锂铍找矿远景区、阿然保泰铍找矿远景区、木吉西锂铍找矿远景区。     

巨野煤田彭庄煤矿首采区减少煤损方法简析

山东鲁能菏泽煤电开发有限公司彭庄煤矿位于巨野煤田北部,是巨野煤田7个生产和在建煤矿（包括梁宝寺、彭庄、郭屯、赵楼、龙崮、万福、郓城等煤矿）的第一对投产的矿井。2006年8月开始试生产,2007年3月正式投产。彭庄煤矿2007年底核实保有资源量为12698．9万t,     

Detection of the end point temperature of thermal denatured protein in fish and chicken meat through SDS-PAGE electrophoresis

Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) was applied in the detection of the end point temperature (EPT) of thermal denatured protein in fish and meat in this study. It was also used in studying the thermal denatured temperature range of proteins in salmon and chicken meat. The results show that the temperature ranges of denatured proteins were from 65 ℃ to 75 ℃ , and these temperature ranges were influenced by the processing methods. Through SDS-PAGE, the features of repeated he...     

雄性半滑舌鳎雄激素受体基因的克隆与表达分析

利用RT-PCR方法从半滑舌鳎(Cynoglossus semilaevis)中克隆了雄激素受体(Androgen receptor,AR)基因cDNA的部分序列(434 bp),经BLAST比对与狼鲈(Dicentrarchus labrax)、花溪(Kryptolebias marmoratus)、三斑海猪鱼(Halichoeres trimaculatus)和三刺鱼(Gasterosteus aculeatus)的雄激素受体同源性分别为84%,82%,82%和81%.组织表达分析表明,AR基因在半滑舌鳎的性腺、肝、胃、脾、肾、头肾、肠、鳃、心、脑和肌肉这11种组织中均有表达,表达量有所差异.肾中表达量最丰富,鳃中最少.根据其他硬骨鱼类表达模式,推测半滑舌鳎可能只含有1种AR.     

在海洋环境中的酵母菌分布与多样性

最近几年作者对不同海洋环境中的酵母资源、分布和多样性进行的大量研究,从中发现了22属63种1051株。并且发现这些广泛分布在海水、海泥、高盐海水、深海、各种大型海藻表面、各种海鱼体表和体内和红树林生态系统中。不同种的酵母可以产生蛋白酶、脂酶、植酸酶、菊糖酶、纤维素酶、β-1,3-葡聚酶、嗜杀因子、核黄素、铁载体等活性产物,所以这些酵母菌具有广泛的实际用途。     

Pristine or altered: low-Mg calcite shells survived from massive dolomitization? A case study from Miocene carbonates

Low-Mg calcite shells have been widely used to reconstruct the chemistry of ancient seawater. There is always a question: are the shells chemically pristine? This paper presents the isotope and elemental geochemistry of low-Mg calcite bivalve shells in late Miocene platform carbonates, SE Spain. The platform carbonates were extensively dolomitized, and limestone is restricted to older stratal units, and to units mainly in topographically higher and more landward strata. Low-Mg calcite oyster shells were completely dissolved out in the basinward dolomite, but are well preserved in the limestone. These shells appear to retain the original growth microstructures, based on hand samples. Under the microscope, however, dissolution and recrystallization, as well as pristine growth lines are all present. Sr isotopes in these shells range from that of normal Miocene seawater to radiogenic values. δ¹⁸O and δ¹³C values, and Mg, Sr, and Na concentrations in these shells are rather variable. The high end members are consistent with the typical values of modern/late Miocene normal-seawater low-Mg calcite shells, whereas the low end members are close to those of diagenetic calcite cements, which have low δ¹⁸O, δ¹³C, Sr and Na values, and radiogenic Sr. The Nijar shells were altered physically and chemically to different degrees by diagenesis, although these shells are consistent with some “criteria” of unalteration. The isotopic and trace-element data collected in altered and pristine (or less altered) portions coexisting in the same shells are clearly differentiable. Quantitative simulation of covariations of geochemical pairs indicates that solid mixing of unaltered and altered portions by sampling is consistent with the variations in isotopic and elemental data recorded in the Nijar shells. The geological significance of this study is that ancient fabric-retentive calcite shells may have been altered geochemically although they may appear pristine. Calcite shells that underwent intensive diagenesis should be examined rigorously under the microscope, coupled with investigations of multiple geochemical proxies to assess chemical alteration. Only the data of unaltered shells can be used to reconstruct the chemistry of ancient seawater.