竖直埋管地源热泵技术

竖直埋管地源热泵技术的重点和核心是地下埋管换热器。地下埋管换热器的设计包括：换热器形式和回路形式的选择，地下换热器尺寸设计，水平间距及热短路，管材的选用和换热能力等。地下埋管换热器的施工主要包括：钻孔，下管，注浆、回填和换热器的安装。     

渭北旱原农业生态系统物能转化效率及综合效益评估

以渭北旱原合阳县甘井乡为例,对其物能产投关系进行了研究。氮、磷素及能量的转化效率在产量中等(约2550kg/ha)时最高,低产和高产时都下降;水分转化效率与产量呈正相关。根据物能产投关系及其它有关指标,对农业生态经济系统效益进行了综合评估,其结果能客观反映农业生态建设的成就。     

四川南部珙县早侏罗世一新蜥脚类恐龙

简介在珙县下侏罗统自流井组东岳庙段中,发现的原始蜥脚类恐龙化石的一新属种石碑珙县龙。成年个体长约１４ｍ。化石材料相当丰富,除头骨不完全外,其他部分乃至全部均保存完好。它是早期的原始的蜥脚类,但又和蜥脚类有不少共同点。它对研究蜥脚类的起源和进化,具有重要意义     

Positive effect of porphyrans on the lifespan and vitality of Drosophila melanogaster

The effects of degraded porphyran (P1) and natural porphyran (P) on the lifespan and vitality of Drosophila melanogaster are studied. The porphyrans, added daily to the food medium at 0.2% and 1% concentrations, can significantly increase the lifespan in average of 55.79 and 58.23 d in 0.2% P1 diet females and 1% P1 diet males, extending by 12.29% and 8.60% over the corresponding controls, respectively. The effects of porphyrans on D. melanogaster in heat-stress condition were also examined, and found a remarkable increase in survival time. The results which are consistently associated with the use of porphyrans are related to their free radical scavenger action. Considerable increase in vitality demonstrated that vitalities of middle-aged fly (assessed by measuring their mating capacity) was observed after porphyrans addition. Therefore, porphyrans are effective in reducing the rate of aging, and P1 in low molecular weight is better than natural P.     

东海原甲藻抗体的制备及酶联免疫检测方法的建立

通过制备针对东海原甲藻细胞破碎物的多克隆和单克隆抗体,建立了基于双抗体酶联免疫分析定量检测东海原甲藻(Prorocentrum donghaiense)的检测方法。利用该方法对单一藻种、混合藻种和现场样品中的东海原甲藻进行检测的结果与镜检结果相一致,最低检测限度为1×103 cells/m L。该方法的建立对中国近海赤潮暴发的实时监控具有重要意义。     

Optical detection of Prorocentrum donghaiense blooms based on multispectral reflectance

Prorocentrum donghaiense is one of the most common red tide causative dinoflagellates in the Changjiang （Yangtze） River Estuary and the adjacent area of the East China Sea. It causes large-scale blooms in late spring and early summer that lead to widespread ecologic and economic damage. A means for distinguish- ing dinoflagellate blooms from diatom （Skeletonema costatum） blooms is desired. On the basis of measure- ments of remote sensing refectance [Rrs（λ）] and inherent optical parameters, the potential of using a mul- tispectral approach is assessed for discriminating the algal blooms due to P. donghaiense from those due to S. costatum. The behavior of two reflectance ratios [R1 = Rrs（560）/Rrs（532） and Re = Rrs（708）/Rrs（665）], suggests that differentiation of P. donghaiense blooms from diatom bloom types is possible from the current band setup of ocean color sensors. It is found that there are two reflectance ratio regimes that indicate a bloom is dominated by P. donghaiense; （1） R1 〉 1.55 and R2 〈 1.0 or （2） R1 〉 1.75 and R2 ≥ 1.0. Various sensitivity analyses are conducted to investigate the effects of the variation in varying levels of chlorophyll concentration and colored dissolved organic matter （CDOM） as well as changes in the backscattering ratio （bbp/bp） on the efficacy of this muitispectral approach. Results indicate that the intensity and inherent op- tical properties of the algal species explain much of the behavior of the two ratios. Although backscattering influences the amplitude of Rrs（λ）, especially in the 530 and 560 nm bands, the discrimination between P. donghaiense and diatoms is not significantly affected by the variation of bbp/bp. Since aCDOM （440） in coastal areas of the ECS is typically lower than 1.0 m-1 in most situations, the presence of CDOM does not interfere with this discrimination, even as SCDOM varies from 0.01 to 0.026 nm-1. Despite all of these effects, the dis- crimination of P. donghaiense blooms from diatom blooms based on multispectral measurements of Rrs（λ） is feasible.     

地质遗迹监测:守住518处“人类记忆”

正调查发现,湖南拥有重要地质遗迹518处。地质遗迹保护要向文物保护学习,湖南的地质遗迹保护要尽快制定地方性地质遗迹管理法规,从根本上推动地质管理工作。大自然上亿年的沧海桑田留下了数不清的珍贵的地质遗迹,被形象地称为"人类的记忆"。地质遗迹是地球演变过程中留下的生物和非生物痕迹,记载着地球沧海桑田的变换。此外,它还是推断与论证地质事件的有力佐证,是寻找与断定矿产资源踪迹的脉搏,是勘验与追寻生命起源的线索,具有极高的科学价值。主要     

我国的矿业强国之路怎么走

正近年来,随着矿业的迅猛发展,尤其是实现中华民族伟大复兴的"中国梦"的提出,打造矿业强国成为了我国社会各界的共识。而全国政协第八届委员会秘书长、原地质矿产部部长、中国矿业联合会高级资政委员会主任朱训的《关于中国由矿业大国迈向矿业强国的思考》一文,在把建设矿业强国提到战略高度同时,也引起了业内专家对矿业强国的聚焦和热议。"中国现在已经是矿业大国,但还不是矿业强国。建设矿业强国与‘中国梦’密切相关,需要依     

把忠诚镌刻在大地上——追记焦作市国土资源局原副局长丁长春

正2014年4月2日,尽管这一天阳光明媚、百花盛开,但对于太行山下、黄河岸边的焦作市国土资源局干部职工们来说,是个十分悲哀的日子。就在这一天,令他们十分爱戴的副局长、共产党员——丁长春同志,突然离开了与他朝夕相处的同事和战友们,离开了他用青春热血辛勤耕耘的国土资源事业……——题记2014年4月2日,早上6点多,刚起床的焦作市国土资源局原副局长丁长春感到身体不适,爱人劝他如不行就去医院看看,可他说:"参加省厅会议的几个代表上午要走,我得为他们送行。     

海水甲壳类寄生性病原血卵涡鞭虫(Hematodinium spp.)研究进展

血卵涡鞭虫(Hematodinium spp.)是一类危害海水甲壳类的致病性寄生性甲藻,在世界范围内严重威胁了多种重要经济甲壳类的渔业生产。近年来,血卵涡鞭虫先后在我国浙江、广东沿海的锯缘青蟹、三疣梭子蟹、脊尾白对虾等重要养殖甲壳类中被报道发现,并已确定该寄生病原是近年来引起当地养殖青蟹"黄水病"、三疣梭子蟹"牛奶病"和脊尾白对虾大规模死亡的主要病原之一。本文结合作者近年来关于Hematodinium spp.的研究成果,系统综述了国内外该寄生性病原的研究进展,包括其系统分类、生活史、传播途径、发生机制等;并针对目前该寄生性病原研究中存在的关键问题,结合我国相关研究现状做出了分析和展望,以期为我国海水甲壳类血卵涡鞭虫流行病的预防与控制提供理论依据和技术支持。