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长江下游与浙江主要河流枯水期悬浮物稀土元素组成研究

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海洋地质与第四纪地质 2024年第4期44卷 88-98页

作者：贾贤明陈坚汪柯宇冯启营李云海李茂森上海海洋大学海洋科学学院上海201306 自然资源部第三海洋研究所厦门361005 福建省海洋物理与地质过程重点实验室厦门361005 中国海洋大学海洋地球科学学院青岛266100 福州大学先进制造学院晋江362200

基于2021年10月至11月在长江下游及钱塘江、椒江和瓯江等浙江主要河流枯水期采集的64个悬浮物样品,分析研究了其粒度分布和稀土元素(REE)组成,讨论了各河悬浮物REE组成差异以及物源端元特征。结果显示,枯水期长江下游、钱塘江、椒江和... 详细信息

基于2021年10月至11月在长江下游及钱塘江、椒江和瓯江等浙江主要河流枯水期采集的64个悬浮物样品,分析研究了其粒度分布和稀土元素(REE)组成,讨论了各河悬浮物REE组成差异以及物源端元特征。结果显示,枯水期长江下游、钱塘江、椒江和瓯江悬浮物REE含量均值分别为209.52、173.64、211.86和228.70 mg/kg;北美页岩(NASC)标准化配分曲线明显向右倾,并有明显的Ce负异常特征。与前人所测数据相比,钱塘江和瓯江悬浮物REE含量明显较高;长江悬浮物REE和前人长江悬浮物/沉积物表现总体一致。从(La/Yb)_(NASC)—(La/Gd)_(NASC)图看,长江、钱塘江、椒江、瓯江之间有一定差别,可成为它们物源端元的判别指标;相对于历史沉积物数据,长江悬浮物REE比值分布范围较为集中,以悬浮物为对象研究河流物源端元比沉积物有更好的效果。

关键词：悬浮物稀土元素物源长江浙江河流

基于可见光影像的木里矿区排土场植被覆盖度提取研究

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青海大学学报 2024年第3期42卷 17-24,46页

作者：王克钰李希来李国荣王祎明把熠晨青海大学地质工程学院青海西宁810016 青海大学农牧学院青海西宁810016

为了快速准确提取木里矿区排土场的植被覆盖度,基于无人机可见光影像,选择过绿指数、过绿减过红指数、可见光波段差异植被指数和归一化绿红差异指数,将植被指数时序图交点法和样本统计法相结合进行阈值分割,从而提取植被覆盖度,并对提... 详细信息

为了快速准确提取木里矿区排土场的植被覆盖度,基于无人机可见光影像,选择过绿指数、过绿减过红指数、可见光波段差异植被指数和归一化绿红差异指数,将植被指数时序图交点法和样本统计法相结合进行阈值分割,从而提取植被覆盖度,并对提取结果的精度进行验证。结果表明:可见光波段差异植被指数的提取精度最高,达到95.83%,Kappa系数为0.92。由此可见,利用可见光波段差异植被指数,将植被指数时序图交点法和样本统计法相结合的方法适用于提取木里矿区排土场的植被覆盖度且精度较高。研究结果可为高寒矿区排土场植被覆盖度的精确提取提供一定的参考。

关键词：可见光影像木里矿区植被覆盖度植被指数

Identification of long non-coding RNA p34822 as a potential plasma biomarker for the diagnosis of hepatocellular carcinoma

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Science China(Life Sciences) 2017年第9期60卷 1047-1050页

作者： Cheng wang Tianyu Ren keyu wang Shaogeng Zhang Shubin Liu Hu Chen Penghui Yang The 307 Hospital Of PLA Beijing 100071 China The 302 Hospital Of PLA Beijing 100039 China Beijing Institute of Microbiology and Epidemiology State Key Laboratory of Pathogen and Biosecurity Beijing 100071 China

Dear Editor,Hepatocellular carcinoma(HCC)is the third leading cause of cancer-related deaths worldwide(Li and Satomura,2015).Early diagnosis and treatment are vital for reducing ***,biomarkers such as serum alpha fetoprotein(AFP),AFP-L2,and carcinoembryonic antigen are widely used tumor markers for managing HCC in patients(Shi et al.,2016).However,because of their low diagnostic sensitivity and specificity,novel biomarkers with high sensitivity and specificity for early HCC diagnosis are needed.

关键词：原发性肝细胞癌生物标志物早期诊断非编码RNA 鉴定血浆肿瘤标志物早期治疗

延长油田CO_(2)大气扩散数值模拟研究及监测点位优化

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中国矿业 2024年第2期33卷 201-207页

作者：杨康杨红沈振振刘瑛梁全胜杨强强王宏姚振杰王苛宇马振鹏陕西省CO_(2)封存与提高采收率重点实验室陕西西安710065 陕西延长石油(集团)有限责任公司研究院陕西西安710065 西北大学地质学系陕西西安710000 陕西延长石油(集团)有限责任公司延长气田采气一厂陕西延安716000

由于陕北地区局部气象环境复杂,造成CO_(2)浓度扩散方向的不确定性,同时,延长油田地处黄土塬,地貌沟壑纵横高低起伏,导致布置CO_(2)大气监测点位困难。本文基于Fluent软件模拟了不同泄漏情景下CO_(2)驱油与封存泄漏后在大气中的扩散规律... 详细信息

由于陕北地区局部气象环境复杂,造成CO_(2)浓度扩散方向的不确定性,同时,延长油田地处黄土塬,地貌沟壑纵横高低起伏,导致布置CO_(2)大气监测点位困难。本文基于Fluent软件模拟了不同泄漏情景下CO_(2)驱油与封存泄漏后在大气中的扩散规律,优化监测点位布局,并开展了监测实践。研究结果表明:随着风速的不断增加,CO_(2)云的浓度在纵向上呈现出一直缩小的趋势,但是CO_(2)云的浓度在横向上的扩散距离呈现出先增大后缩小的趋势;当风速为2.0 m/s时,CO_(2)云的扩散距离最远为47 m,浓度最大的CO_(2)云扩散距离为15 m;随着泄漏速度的增大,近地表处CO_(2)云的浓度无论是在纵向上还是在横向上都在不断增大;当泄漏速度小于0.4 m/s时,随着泄漏速度的增加,CO_(2)云的扩散距离增加得较快;当泄漏速度大于0.4 m/s时,随着泄漏速度的增加,CO_(2)云的扩散距离增加速率变缓。结合模拟结果、陕北地区气象环境、裂缝发育方向、“注气”优势方向和近地表植被高度,确定监测点位布局:方向上为北东—南西向;平面上为距离井口下风向15 m;纵向上为采样高度50 cm。CO_(2)浓度大气监测点的监测结果表明并未发生泄漏。

关键词： CO_(2)驱油与封存泄漏 CO_(2)泄漏 CO_(2)浓度大气扩散监测点位黄土塬地区

wang Tao:China's former Petroleum Tycoon

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中国油气：英文版 2001年第3期8卷 18-23页

作者： wang keyu

Life is like a bicycle. If you stop suddenly you fall off. So it is better for a man to just slow down a little. Nowadays, Dr. wang Tao, China's former petroleum boss, still has a full work agenda every day though he was retired from the position as president of China National Petroleum Corporation (CNPC) at the end of ***, 'now I can be a little light-hearted because I no longer shoulder the responsibility for the destiny of 1.5-million oil staff as I used to,' the 70-year-old wang said with smile in an exclusive interview with COG. He worked 15 hours a day before he stepped down from the *** now, he works nearly 10 hours a day. He said he was willing to keep himself busy so long as he felt healthy. He really looked energetic and talked with wisdom.

关键词： wang Tao CNPC

PetroChina Opens 18 Fresh Oil and Gas Blocks to Foreign Investors—Interview with CCAD general manager Zeng Xingqiu on PetroChina's foreign risk exploration and development

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China Oil & Gas 2001年第4期8卷 50-52页

作者： wang keyu

PetroChina has recently opened 18 new oil and gas blocks to foreign companies for exploration and development and will soon hold a series of bilateral negotiations on the cooperation projects. Those blocks are located in the northern part of Ordos basin, the northeastern part of Songliao basin, the northwestern part of Caidamu basin and Junggar basin. No blocks in Tarim basin are included in the 18ones. This is the first time for China to offer so many blocks for foreign cooperation on the Chinese soil at one time.

关键词： CNPC Interview with CCAD general manager Zeng Xingqiu on PetroChina’s foreign risk exploration and development PetroChina Opens 18 Fresh Oil and Gas Blocks to Foreign Investors

CNPC Effectively Operates Worldwide

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China Oil & Gas 2002年第1期9卷 14-16页

作者： wang keyu

CNPC rapidly expanded its overseas oil and gas operation in 2001. The annual crude and natural gas outputs from the overseas projects were 16.23 million tons and 926 million cubic meters respectively while the crude processing volume was 2.3 million *** on those oil and gas output, CNPC shared 8.31million tons of equity crude and 577 million cubic meters of equity natural gas last year, up 20.96percent and 29.66 percent respectively from the previous year, with an annual oil and gas turnover of US$910 million and a profit of morn than US$100 million.

关键词： CNPC 海外油气业务 2001年中外合资项目业绩发展目标

Pointing Fingers from A Glass House The fundamental purpose of the increase in China’s defense budget is to safeguard national security and meet the challenges of global changes unseen in a century

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China Report ASEAN 2023年第4期8卷 32-33页

作者： wang keyu the Institute of International Relations National University of Defense Technology

On March 5,the Ministry of Finance released the 2023 government budget draft report,according to which China’s defense budget of 2023 will be 1.55 trillion yuan(US$224.79 billion),an increase of 7.2 percent year on year,which is only 0.1 percentage points higher than *** release of the defense budget attracted the attention of many foreign media outlets,some of which delivered distorted interpretations and exaggerated“China’s threat of force.”On March 6,Tan Kefei,spokesperson for the delegation of the People’s Liberation Army and the People’s Armed Police Force to the First Session of the 14th National People’s Congress,said that China has adhered to the principle of coordinated development of national defense and economic development.

关键词： budget delegation outlet

QHSE Management System Essential to PetroChina's Sustainable Development

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China Oil & Gas 2002年第1期9卷 38-39页

作者： wang keyu

As large oil company operating worldwide,PetroChina has been consistently committed to the belief that humanity and the environment on which it relies for existence are the two most precious resources in the world. PetroChina regards it as the main responsibility to keep its working staff healthy,guard against accidents and protect the environment.

关键词：中石油 PetroChina QHSE管理体系可持续发展质量控制劳动安全环境保护