日本绒螯蟹线粒体DNA序列研究I.12S rRNA

参考果蝇与蚤状     

基于倒谱的2015年天津港“8·12”爆炸分析

本文通过对记录到2015年天津港“8·12”爆炸的32个台站的三分量数字地震波形进行倒谱分析,得到了以下结论:①2个主要爆炸的发生时间间隔约为32.3s;②爆炸-2发生在爆炸-1的西北侧约353°处;③依据这些记录的倒谱,无法判定在爆炸-1前是否还存在微小的爆炸。以上结论均与前人研究成果吻合。由于倒谱叠加采用的是全波形,对滤波频带不敏感,因此,在检测发生在同一地点的多次爆炸或其它类似事件（如核爆）上有一定的优势。     

云南鹤庆盆地15万年以来的介形类及环境变迁

云南鹤庆盆地HQ钻孔剖面分析出介形类13属．32种．根据介形类丰度、分异度及百分含量的变化情况,结合孢粉、总有机碳含量(TOC)、碳氮比(C／N)、碳酸盐含量等的分布,将鹤庆盆地近15万年以来的古气候、古环境变化初步划分为5个阶段,同时又划分出若干亚阶段．总的气候特征为冷期偏湿、暖期偏干,在冷湿和暖干的宏观波动背景上存在次级波动,反映出其气候变化的区域特性．同时．各气候阶段基本可与深海氧同位素V28-38钻孔、黄土／古土壤序列邙山剖面反映的气候阶段相对比,又显示出其气候变化的协同性．在构造与气候的双重作用下．在11790aBP左右湖盆被彻底切开．     

基于随机森林算法的广州白云机场终端区雷暴潜势预报

利用2014—2015年夏季雷达资料获取雷暴发生有无数据,计算探空资料的对流指数与雷暴发生有无数据的灰色关联度,发现雷暴产生跟抬升凝结高度气压、850～700 hPa的温度和露点温度、风切变的关系最紧密。接着建立广州白云机场终端区内3类区域(离塔台中心8 km、50 km、100 km)的12小时随机森林分类模型,对不同区域的雷暴潜势进行预报和评估,发现终端区区域面积越大,雷暴发生样本比例越高,临界成功指数CSI、预报准确率AF、探测概率POD越来越高,虚假报警率FAR越来越低,表明预报出来的准确率越来越高。离塔台中心50 km和100 km区域的预报准确率AF和探测概率POD超过70%,对航空重要天气MDRS通报业务有指示作用。同时袋外错误率均低于1/3,随机森林算法的泛化性能好。     

日本绒螯蟹放流群体12S rRNA序列研究

参考果蝇与蚤状汊序列进行了日本绒螯蟹放流群体的线粒体ＤＮＡ１２Ｓ ｒＲＮＡ基因片段的引物设计、ＰＣＲ扩增及序列测定,得到４５７ｂｐ的碱基序列,其Ａ、Ｔ、Ｇ、Ｃ含量分别为１５８ｂｐ（３４．５７％）、１７８ｂｐ（３８．９５％）、５１ｂｐ（１１．１６％）、７０ｂｐ（１５．３２％）,与果蝇与蚤状相同基因片段序列含量相似。     

Trophic network model of the Northern Adriatic Sea: Analysis of an exploited and eutrophic ecosystem

A quantitative model of the trophic network of Northern Adriatic Sea marine ecosystem during the 1990s has been constructed, with the goal of analysing its trophic structure, identifying the key trophic groups and assessing the anthropogenic impacts on the ecosystem using the Ecopath modelling protocol. The Northern Adriatic Sea is an eutrophic, shallow basin, and one of the most heavily fished areas in the Mediterranean Sea. The network aggregation into discrete trophic levels sensu Lindeman shows that low trophic levels dominate biomass and energy flows, with 40% of the total system throughput flowing out from trophic level 2. Instead, upper trophic levels appear bottom-up controlled, highly depleted and not exerting any control on the trophic network, as shown by mixed trophic impact-based analyses. Microbial loop is comparable to grazing with respect to the magnitude of flows involved, as 66% of the trophic network flows originate from detritus, which is mainly consumed by bacteria. Key trophic groups are plankton groups, macro-crustaceans and detritus, and other r-selected organisms like squids and small pelagics, which have a great influence on the ecosystem. In particular, zooplankton acts as a bottleneck for energy flows, limiting the energy from the low trophic levels effectively reaching the upper food web. The high pelagic production caused by eutrophication sustains high fishery landings and impressive discard quantities, as well as the benthic compartment. Overall, the ecosystem appears quite productive and in a stressed and developmental status. Model results and comparisons with few existing historical data suggest that the low maturity and stressed state of the Northern Adriatic Sea are not only due to natural characteristics, but mainly to anthropogenic pressures.     

孙丙伦等：创新驱动未来，科技铸就辉煌——山东省地矿局探矿工程“十二五”回顾及“十三五”展望

全面回顾了山东省地矿局“十二五”期间探矿工程取得的主要成绩和在技术与成果管理、技术研究与应用等方面所做的主要工作,以及典型工程项目完成情况。从探矿工程转型升级、提质增效以及加强新技术研发与推广应用、强化内部管理等方面展望了“十三五”期间的工作思路。     

The Production and Release of CFCs from Coal Combustion

The destruction of the ozone layer in the atmosphere caused by industrially synthesized CFCs has aroused greatest concerns from the international society, but the CFCs formed from burning of coal containing fluorine have not been recognized by the world yet. In the present study, we condensed the gas through cold traps and used the GC-MS to measure the gas composition, and found that the content of CFC-12 in the smog from coal combustion was significantly higher than the background value of the local atmosphere. This proves that CFC-12 is formed in the process of coal combustion. This paper discusses a new source of non-synthesized CFCs.     

车用红外感雨器的设计

设计了一种车用红外感雨器。该感雨器系统以高亮度红外发光二极管作为光源照射汽车挡风玻璃，以Motorola公司的MC68HC908SR12单片机为控制核心，利用其10位的A／D转换器，完成对挡风玻璃上雨点及水的散射信号的探测采样。通过其PWM端口输出不同占空比的脉冲信号，通过滤波平滑后可转换为相应的直流电平控制雨刮器的转速。