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Catalog of Enhanced Geothermal Systems based on Heat Sources

Acta Geologica Sinica(English Edition) 2021年第6期95卷 1882-1891页

作者： KONG Yanlong pan sheng REN Yaqian ZHANG Weizun WANG Ke JIANG Guangzheng CHENG Yuanzhi SUN Wenjie ZHANG Chao HU shengbiao HE Lijuan Key Laboratory of Shale Gas and Geoengineering Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science CASBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Institute of Tibetan Plateau Research of the Chinese Academy of Sciences Beijing 100085China College of Geoscience and Surveying Engineering China University of Mining and TechnologyBeijing 100083China College of Energy Chengdu University of TechnologyChengdu 610059China

It is common sense that a deeper well implies higher temperature in the exploration of deep geothermal resources, especially with hot dry rock(HDR) geothermal resources, which are generally exploited in terms of enhanced geothermal systems(EGS). However, temperature is always different even at the same depth in the upper crust due to different heat sources. This paper summarizes the heat sources and classifies them into two types and five sub-types: crustorigin(partial melting, non-magma-generated tectonic events and radiogenic heat production), and mantle-origin(magma and heat conducted from the mantle). A review of global EGS sites is presented related to the five sub-types of heat sources. According to our new catalog, 71% of EGS sites host mantle-origin heat sources. The temperature logging curves indicate that EGS sites which host mantle-origin magma heat sources have the highest temperature. Therefore, high heat flow(>100 m W/m^(2)) regions with mantle-origin magma heat sources should be highlighted for the future exploration of EGS. The principle to identify the heat source is elucidated by applying geophysical and geochemical methods including noble gas isotope geochemistry and lithospheric thermal structure analysis. This analytical work will be helpful for the future exploration and assessment of HDR geothermal resources.

关键词： geothermal resources enhanced geothermal systems heat source hot dry rock catalog

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Percutaneous ethanol injection, radiofrequency and their combination in treatment of hepatocellular carcinoma

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World Journal of Gastroenterology 2005年第40期11卷 6277-6280页

作者： Bao-Ming Luo Yan-Ling Wen Hai-Yun Yang Hui Zhi Xiao-Yun Xiao Bing Ou Jing-sheng pan Jian-Hong Ma Department of Ultrasound the Second Affiliated Hospital SunYat-sen University 107 Yanjiangxi Rd Guangzhou 510120Guangdong Province China

AIM： To evaluate the therapeutic effect and the indication of percutaneous ethanol injection （PEI）, radiofrequency ablation （RFA） and their combination in treatment of hepatocellular carcinoma （HCC）. METHODS： Two hundred and fifty-five patients with HCC received treatment of PEI, RFA or their combination. Group1 （〈 3 on in diameter, n=85） was treated with PEI, group2 （〈 3 cm in diameter, n=153） with RFA. Group3 （〉3 cm in diameter, n=86） was divided into two groups. Group 3a （/7=34） was treated with RFA, while group 3b （n=52） was treated with RFA for 2 wk after transcatheter arterial chemoembolization or PEI. Contrast-enhanced sonography was performed for 61 patients before and after RFA. Liver function and serum alpha-fetoprotein （AFP） were measured for all patients. Changes of the lesions on ultrasound and contrast-enhanced CT/HRI were evaluated for assessing the therapeutic responses. The 1-, 2-, 3- and 5-year survival rates were recorded after treatment. RESULTS： In group 1, the complete necrosis rate of lesions after 1 mo was 77.6% （66/85）. The level of AFP declined conspicuously after 1 mo. The 1-, 2-, 3- and 5-year survival rate after treatment was 80.0% （52/65）, 60.4% （32/53）, 52.5% （21/40） and 33.3% （7/21）, respectively. In group 2, the complete necrosis rate of lesions after 1 moh was 92.2% （141/153）. The level of AFP decreased conspicuously after i mo. The 1-, 2-, 3- and 5-year survival rate after treatment was 94.6% （88/93）, 73.2% （52/71）, 63.5% （33/52） and 46.4% （13/28）, respectively. In group 3a, the complete necrosis rate of lesions after 1 mo was 23.5% （8/34）. AFPdropped down to the normal level in only one patient after 1 mo. The 1-, 2- and 3-year survival rate after treatment was 47.6% （10/21）, 42.9% （6/14） and 27.3% （3/11）, respectively. Only one patient was still alive after 5 years. In group 3b, the complete necrosis rate of lesions after 1 mo was 57.7% （30/52）. The level of AFP decreased after 1 mo. The 1-, 2-, 3- and S-year survival rate after

关键词： Hepatocellular carcinoma Radiofrequencyablation Percutaneous ethanol injection Embolism Therapeutic effect

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A Kind of Essential Surfaces in the Complements of Knots

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Communications in Mathematical Research 2013年第2期29卷 143-147页

作者： Han You-fa pan sheng-jun Wang Shu-xin Lei Feng-chun School of Mathematics Liaoning Normal University

In this paper, by the twist-crossing number of knots, we give an upper bound on the Euler characteristic of a kind of essential surfaces in the complements of alternating knots and almost alternating knots, which improves the estimation of the Euler characteristic of the essential surfaces with boundaries under certain conditions. Furthermore, we give the genus of the essential surfaces.

关键词： essential surface twist-crossing number almost alternating knot reduced graph

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Puncturing Period on the Performance of Punctured Turbo Codes

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Wuhan University Journal of Natural Sciences 2002年第3期7卷 319-322页

作者： Xu Heng\|ping, pan sheng, Zhao Xun, Rong Meng\|tian Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, Shanghai, China Department of Electronic Engineering Shanghai Jiaotong University Shanghai Shanghai China

Puncturing is the predominant strategy to construct high code rate turbo codes. Puncturing period is a crucial parameter influencing the performance of punctured turbo codes (PTC). Here we developed a new puncturing scheme of turbo codes, with which the puncturing period on the performance of PTC is studied. Consequently, suggestions on selecting the puncturing period are proposed.

关键词： Key words puncturing period puncturing table AWGN turbo codes

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Effects of N Management on Yield and N Uptake of Rice in Central China

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Journal of Integrative Agriculture 2012年第12期11卷 1993-2000页

作者： pan sheng-gang HUANG sheng-qi ZHAI Jing WANG Jing-ping CAO Cou-gui CAI Ming-li ZHAN Ming TANG Xiang-ru Key Laboratory of Huazhong Crop Physiology Ecology and Production Ministry of Agriculture/College of Plant Science & Technology Huazhong Agricultural University College of Agriculture South China Agricultural University

Efficient N fertilizer management is critical for the economic production of rice and the long-term protection of environmental quality. A field experiment was designed to study the effects of N fertilizer management practices on grain yield and N uptake office. The experiment was laid out in the randomized complete block design with four replications in Central China during 2008 and 2009. Five N treatments denoted as No, NIsoA, N15oB, N24OA, and N24oB, respectively, were studied. NO represented no N application and served as a control, N15OA and N15oB indicated the total N application of 150 kg N ha-I but with two different application schedules （A and B） across the early stage of rice growth. Schedule A was applied as follows： 40% basal, 30% at 10 d after transplanting （DAT） and 30% at 36 DAT （nearly at the panicle initiation stage）, while schedule B was as follows： 30% at basal, 20% at 10 DAT, and 50% at 36 DAT. Similarly, N240A and N240B indicated the total N application of 240 kg N ha-1 with schedules A and B as described above. To quantify N uptake from fertilizer and soil, a 15N experiment was also conducted within the main experimental field, with micro-plots. Grain yields were significantly increased as N rates increased from 0 to 240 kg N ha-1. At the same rate, splitting N application as schedule B significantly increased the grain yield, spikelets per panicle, percentage of ripened grain, and 1 000-grain weight, compared with the N application according to schedule A. Mean rice recovery of N fertilizer by ~SN tracing method ranged from 25.39% at N24oA to 34.89% at NIsoB, however, N fertilizer residual rate in the soil ranged from 12.40% at N240A to 16.61% at N^s0w About 31.5 and 28.5% of total uptake of ~SN derived from basal fertilizer was absorbed at panicle initiation and heading stages, respectively. However, 65.6-92.5% of total uptake of 15N derived from topdressing fertilizer was absorbed at the heading stage. Based on yield and nitrogen recovery e

关键词： 15SN N fate N management recovery rice

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明代方志地图编绘意向的初步考察

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中国历史地理论丛 2005年第4期20卷 115-124页

作者：潘晟北京大学环境学院北京100871

在地理学史和地图学史的研究中,一般关注于古代地图的科学技术价值,而较少讨论其思想史意义,尤其较少讨论方志地图的思想史意义。因此,本文从思想史的角度对明代方志地图的编绘意向做了初步的考察。认为明代方志地图的编绘意向中突出地... 详细信息

在地理学史和地图学史的研究中,一般关注于古代地图的科学技术价值,而较少讨论其思想史意义,尤其较少讨论方志地图的思想史意义。因此,本文从思想史的角度对明代方志地图的编绘意向做了初步的考察。认为明代方志地图的编绘意向中突出地强调了舆图的政治功能,但是对舆图所具有的政治功能的认识存在着较为明显的差异。更值得注意的是,在此之外对区域地理景观自身的关注,反映了新的在一定程度上具有变革萌芽的知识兴趣。这些不仅在一定程度上反映了当时社会上一般的地理学观念与知识系统,同时表现出方志地图在地理学史和地理学思想史中所可能具有的地位和意义。

关键词：地理学史思想史方志地图意向

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Degradation behaviors of Nabumetone and its metabolite during UV/monochloramine process:Experimental and theoretical study

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Journal of Environmental Sciences 2024年第8期142卷 103-114页

作者： Xiang Tu Yunsong Bai Qing Fu sheng Chang Kunfeng Zhang Yang pan Ruiyang Xiao Yifu Fu Qi Zhang State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Drinking Water Source ProtectionResearch Centre of Lake EnvironmentNational Engineering Laboratory for Lake Pollution Control and Ecological RestorationChinese Research Academy of Environmental SciencesBeijing 100012China School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Institute of Environmental Engineering School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China School of Forestry Northeast Forestry UniversityHarbin 150040China

This study investigated degradation behaviors of a nonsteroidal anti-inflammatory drug Nabumetone(NMT)and its major metabolite 6-methoxy-2-naphthylacetic acid(MNA)in the coupling process of ultraviolet and monochloramine(UV/NH2Cl).The second-order rate constants of the contaminants reacting with reactive radicals(HO·,Cl·,Cl_(2)·-,and CO_(3)·^(-))were determined by laser flash photolysis ***·and Cl·contributed predominantly with 52.3%and 21.7%for NMT degradation and 60.8%and 22.3%for MNA *** presence of chlorides retarded the degradation of NMT,while promoted the destruction of MNA,which was ascribed to the photosensitization effects of MNA under UV *** functional theory(DFT)calculations revealed that radical adduct formation(RAF)was dominant pathway for both HO·and Cl·reacting with the contaminants,and hydrogen atom transfer(HAT)preferred to occur on side chains of NMT and *** reacted with NO_(2)·through single electron transfer(SET)with the second-order rate constant calculated to be 5.35×10^(7)(mol/L)^(-1)sec^(-1),and the contribution of NO_(2)·was predicted to be 13.0%of the total rate constant of NMT in pure water,which indicated that NO_(2)·played a nonnegligible role in the degradation of *** acute toxicity and developmental toxicity of NMT were enhanced after UV/NH_(2)Cl treatment,while those of MNA were *** transformation products of both NMT and MNA exhibited higher mutagenicity than their parent *** study provides a deep understanding of the mechanism of radical degradation of NMT and MNA in the treatment of UV/NH2Cl.

关键词： UV/NH_(2)Cl Reactive species Degradation kinetics Reaction mechanism Degradation products

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叙事、互文与可视化:文献学视角下的近现代报刊地图

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江苏社会科学 2021年第4期 231-240,244页

作者：潘晟南京师范大学社会发展学院

近现代报刊地图是尚未得到充分利用的一种很有价值的史料,它总量较大,虽然从科学测绘的角度看质量参差,但是从史学研究的角度看其类型多样、内涵丰富;虽然其在分布上存在着集聚与离散并存的现象,即某些时段某些地区某些种类明显集中,而... 详细信息

近现代报刊地图是尚未得到充分利用的一种很有价值的史料,它总量较大,虽然从科学测绘的角度看质量参差,但是从史学研究的角度看其类型多样、内涵丰富;虽然其在分布上存在着集聚与离散并存的现象,即某些时段某些地区某些种类明显集中,而其他类型则较为分散,但是大多数报刊地图有着明确的上下文语境,而且往往其叙事具有连续性、日常生活性的特征。这些地图不仅仅是文字报道的图像说明,更是近现代社会的可视化呈现。它们与其他资料构成互文,既可以对研究近现代社会起到互补阐释的作用,又可以较好地推进近现代社会空间史研究。

关键词：近现代史报刊地图地图学史互文可视化

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西方地图史研究:收藏兴趣、后现代转向、多样化

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中国历史地理论丛 2019年第1期34卷 139-158页

作者：潘晟南京师范大学社会发展学院江苏南京210097

地图史研究在20世纪六七十年代兴起,在各种社会思潮的影响下,20世纪八九十年代很快就发生了转向。其中,哈利(John Brain Harley)、大卫·特布尔(David Turnbull)、克里斯蒂安·雅克布(Christian Jacob)是地图史研究转向中展开系统理论... 详细信息

地图史研究在20世纪六七十年代兴起,在各种社会思潮的影响下,20世纪八九十年代很快就发生了转向。其中,哈利(John Brain Harley)、大卫·特布尔(David Turnbull)、克里斯蒂安·雅克布(Christian Jacob)是地图史研究转向中展开系统理论阐述的代表性学者。尤其是哈利成就卓著,他关于地图史的理论阐述被称之为地图史哲学,而以他为核心的学者群为地图史研究做出了重大贡献,影响深远。他们对地图史研究理论的阐释有着内在的一致性,都强调了对地图的重新定义,地图与其所处的社会的关系,地图与知识、权力的关系。在理论发展的推动下,地图史研究在20世纪90年代以后开始蓬勃发展。首先,传统的实证主义专题在继续发展的同时,吸收新的思路与方法,不断深化;其次地图史不再只是地图史本身:地图史同时也呈现历史,而地图更被用来构建历史。第三,也是极为重要的,从权力、资本、知识关联性角度,讨论地图史与地理空间的相互创造过程。第四,地图装饰和女性主义等其他地图史专题研究,同样引人注目。

关键词：西方地图史地图史哲学后现代转向

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从宋代诗文看幽思与胜览思想对宋代地图学发展的影响

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中国历史地理论丛 2010年第2期25卷 69-83页

作者：潘晟天津师范大学历史文化学院天津300387

幽思与胜览是两宋时代地图学中的两个重要思想脉络。在思想感情与意识形态之外,它们对当时地图学发展的影响大致体现在这样几个方面:促进了政府测绘边疆地图的同时,激发了私人对边地的探险旅行和地图测绘活动;各类"天下"舆图的绘制,在... 详细信息

幽思与胜览是两宋时代地图学中的两个重要思想脉络。在思想感情与意识形态之外,它们对当时地图学发展的影响大致体现在这样几个方面:促进了政府测绘边疆地图的同时,激发了私人对边地的探险旅行和地图测绘活动;各类"天下"舆图的绘制,在文化和空间上塑造了王朝整体地域形象;推动了历史地图和州郡类区域地理图的不断发展。另一个值得注意的现象则是,在强烈的思想感情驱使下,石碑作为一种特殊的材质成为宋代地图绘制的重要载体,推动了地图绘制形式的发展。与幽思相比,胜览更多地体现了宋代地图学发展中的乐观因素,推动了八景图意象的兴起和山岳地图的流行,在中国地图学中开出一朵灿烂夺目的以审美为核心的地图分支。

关键词：幽思胜览宋代地图学史地理学史

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