Chinese Fine‐Grained Geological Named Entity Recognition With Rules and FLAT
Earth and Space Science, Volume 9, Issue 12, December 2022., 2022 Abstract Geological named entity recognition (NER) is an essential prerequisite to realizing geological information extraction and information retrieval and is an actual means for accomplishing structured reconstruction of unstructured geological data.
Siying Chen +5 more
wiley +1 more source
Effects of Breccias and Round Gravels on Steep Cut Slope Runoff and Sediment Yield Under Simulated Rainfall [PDF]
, 2023 [Objective] The effects of breccias and round gravels on steep cut slope infiltration, runoff, sediment yield, and hydrodynamic characteristics were analyzed in order to provide a theoretical basis for a soil erosion prediction model and soil ...
Cao Longxi +5 more
core +1 more source
The research on nutrients release during the decomposition of Chaetomorpha sp. [PDF]
, 2016 通过室内模拟,研究了不同环境条件下绿潮硬毛藻的分解速率,以及死亡藻体内营养盐的释放规律,以阐明硬毛藻大量衰亡对天鹅湖水质的潜在影响。结果显示,温度对硬毛藻分解速率的影响显著(P沉积物>营养盐水平;N释放为:沉积物>温度>营养盐水平。高温条件下,死亡藻..
孟祥森 +5 more
core +1 more source
10Be和26Ai揭示的合黎山西南部侵蚀速率初步研究 [PDF]
, 2018 地表侵蚀速率是衡量地貌演化的一个重要因子。本研究利用原地宇宙成因核素 10Be 和 26Al 对合黎山西南部地表岩石侵蚀速率进行了首次测定。结果显示：约 30 ka 以来，合黎山西南部的地表岩石侵速率约为 24 mm∙ka-1。这一结果与已见报道的其他基岩侵蚀速率值一致。这一结果与 Small et al 获得的非干旱地区的基岩侵蚀速率也基本一致，但是显著高于干旱的南极地区和半干旱的澳大利亚。10Be 和26Al 获得的侵蚀速率的良好一致性表明本研究中所用侵蚀模式的有效性。所得的侵蚀速率小于 ...
Dong,GC(Dong, Guocheng) +5 more
core +1 more source
Accumulation and Source Apportionment of Soil Heavy Metals in Molybdenum-Lead-Zinc Polymetallic Ore Concentration Area of Luanchuan [PDF]
, 2023 BACKGROUNDThe Luanchuan Mo-Pb-Zn polymetallic ore concentration area, located in Henan Province, China, has a long-term history of mining activities. Heavy metals have been liberated during mining, which induces heavy metal pollution of water and soil ...
Danli CHEN +6 more
core +1 more source
饱和土动力方程全显式有限元法在OpenSees中的实现与应用 [PDF]
, 2018 饱和土的动力响应一直是土动力学重点关注的问题,尤其是在循环荷载作用下饱和砂土容易发生孔压升高、强度降低的液化现象。同时,采用有限元法求解尺寸较大的实际饱和土场地,巨大的自由度数往往造成整体系统的计算效率极低,制约着饱和土数值方法的发展。因此,基于已提出的u-p(u为固相土骨架位移,p为孔压)饱和两相多孔介质动力方程的全显式有限元法,将其嵌入Open Sees开放性平台中,并利用软件自带的饱和多孔介质单元和本构模型,实现了高效、显式计算饱和土的动力响应。通过计算二维弹性饱和土动力响应 ...
古泉, 宋佳, 杜修力, 许成顺
core +1 more source
Flexible magnetic suction impermeable membrane of vertical curtain water interception technology for strong seepage loose layer of coal mines [PDF]
, 2023 With abundant mineral resources, many types of mining industry and many mines, mining development in China has led to the decline of groundwater level around the mines, waste of water resources, water quality pollution, surface collapse, land degradation,
Hai WANG +6 more
core +1 more source
New Distribution Records of One Genus and Six Plants from Coastal Zones,Fujian Province [PDF]
, 2017 在福建海岸带与海岛生物多样性调查中,发现了1个福建省被子植物新记录属：山黧豆属（Lathyrus）,6个新记录种（含变种）：蓝花子（Raphanus sativus var.raphanistroides）、海滨山黧豆（Lathyrus japonicus）、大狼毒（Euphorbia jolkinii）、冬青卫矛（Euonymus japonicus）、大叶胡颓子（Elaeagnus macrophylla）、滨艾（Artemisia fukudo）。凭证标本均存放于厦门大学植物标本馆（Au）。One
侯学良 +4 more
core +1 more source
, 2016 以位于北黄海的大连—烟台海底光缆和渤海海峡诸岛间的海底光缆为例,概括介绍了它们所处的海洋环境及重要的海洋开发活动状况,从中可见它们对海底光缆的作用及影响。并着重说明海缆路由的选择及确认的过程及其重要意义。最后介绍了海底光缆与海底隧道建设之间的相似及相关性,从海底光缆建设长期的的实践中,从长期开展的海底光缆建设形成的成熟工作流程及科学的工作方法中,吸取一些可资借鉴的经验教训 ...
徐家声 , 徐家声 刘自力
core
The distribution and palaeoenvironment meaning of carbon, sulfur, and biogenic silica in the sediments of the western arctic ocean [PDF]
, 2013 北极环境变化与系统内生物地球化学过程有密切联系，生源要素的变化趋势在一定程度上记录了环境的变化。这种驱动与响应之间的信息被保留到沉积物中，以各种地球化学参数的沉积记录表现出来。 本研究是利用中国首次、第二次北极科学考察所采集的西北冰洋楚科奇海及邻近海域39个表层沉积物样品、12个短岩芯和2个长岩芯沉积物样品为分析对象，测定了其中的总碳、总硫、有机碳、无机碳和生源硅等生源要素，通过参考前人研究成果，如沉积物颜色、粒径等特征，并结合西北冰洋海域的物质来源、环境状况及其演变趋势的分析 ...
彭建平
core