mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Recent changes in wetlands on the Tibetan Plateau: A review

About 80% of global wetland resources are degrading or disappearing; thus the wetland ecosystem has become one of the most seriously threatened ecosystems in the world. As an area sensitive to global changes and acting as a security barrier for the Asian ecosystem, the Tibetan Plateau has about 13.19×10~4 km~2 of wetlands of special significance within China. With the increasing application of remote sensing technology to wetland research, Tibetan Plateau wetland research has entered a period of rapid development. This paper summarizes the remote sensing research literature of the Tibetan Plateau wetlands from 1992 to 2014,and is intended to provide references for future research into the wetlands of the Tibetan Plateau. We have reviewed monitoring methods, research topics, and existing problems. Our review has revealed the following characteristics:(1)Over the past 40 years, the research paradigm of the Tibetan Plateau wetlands has undergone dynamic changes in the monitoring of wetland areas, landscape patterns and the eco-environment based on remote sensing technology. Attention has also been focused on constructing models with an ecological system perspective and analyzing three patterns of change trends within the Tibetan Plateau wetlands. (2) The results of Tibetan Plateau wetland research based on remote sensing were as follows: (a) between 1970 and 2006,the Tibetan Plateau wetland area decreased overall at a rate of 0.23%/a, and the landscape diversity declined at a rate of 0.17%/a; (b) by contrast, between 1976 and 2009,the lake area of the inland river basins in the Tibetan Plateau increased at a rate of 0.83%/a; and (c) the change trend in the Tibetan Plateau wetlands was controlled by climate change. Current problems relating to remote sensing (RS)-based research in the Tibetan Plateau wetlands are computer interpretation accuracy and the processing precision of cloud removal, and the lack of a comprehensive overview of the Tibetan Plateau wetland system. Finally, based on the review, some key activities for future study have been proposed, as follows:(1)Strengthening the integration of the Tibetan Plateau wetland research with remote sensing research; (2) discussing the response and adaptation mechanisms of the Tibetan Plateau wetland ecosystem within the context of global change; (3) strengthening the integration of remote sensing (RS), geographic information system (GIS), and global positioning system (GPS), and promoting the construction of a Tibetan Plateau wetland information platform.
Does cultivated land function transition occur in China?

Land function change has been the focus of scientific research and policy making worldwide. Agricultural development and land use demand at present in China shared common characteristics with the countries such as Japan, South Korea, USA, and European developed countries, which have undergone cultivated land function transition. Whether cultivated land function transition occurred is of significance for land change science and cultivated land protection in China. However, there has been no explicit methodology for cultivated land function change research. This paper firstly presents a methodology by integrating policy development analysis based on the normative connotation of cultivated land function or termed cultivated land function demand and quantitative assessment based on the positive connotation of cultivated land function or termed cultivated land function supply. Then, cultivated land function transition is diagnosed by analyzing cultivated land function change in 1949-2012. Results show that cultivated land function transition overall occurred in 2006. Specifically, the normative cultivated land function or cultivated land function demand fragmented into seven types in 1985 and upgraded in 2004. Total value of the positive cultivated land function or cultivated land function supply turned to rise with an increase from 2.40 to 2.45 as the coefficients of variability (CV) of the value of the seven functions decreased from 2.94 to 2.29 in 2006-2012. The two-year gap between these two aspects of transition mainly resulted from the time lag effects of policy implementation. In the process of the transition, co-ordination and malposition of supply and demand of cultivated land function coexisted with supply lag and function morphology distortion. Considering the transition experiences in the developed countries mentioned above, suggestions on multifunctional cultivated land management are proposed. Moreover, route of land use transition research is discussed.
免疫代谢学:肥胖与2型糖尿病研究的新方向

长期以来,科学家们认为免疫系统中的效应细胞是肿瘤及感染性疾病的防御细胞,而调节细胞主要作用于致敏和自身免疫反应。近年来,许多研究表明免疫细胞还有不少非传统的免疫作用,包括参与神经退行性病变、心血管疾病及代谢性疾病的发生发展。崭新的科研前沿方向——免疫代谢学(immunometabolism),主要研究免疫与代谢在生理及疾病中的相互影响。该学科目前在两方面取得了引人瞩目的进展:一方面,新近认为天然或获得性免疫系统参与了既往所认为的非免疫性疾病,如肥胖,产生代谢与免疫方面的异常,可导致对2型糖尿病、心血管疾病、癌症或神经退行性病变的易感。另一方面,免疫细胞,如淋巴细胞在多层面受到内部代谢的调节影响。深入阐明免疫与代谢相互作用的细胞分子机制,是目前亟需解决的科学问题。
应用染色体芯片分析技术诊断Smith-Magenis综合征

随着基因组学研究技术的快速发展,人们发现基因组中存在大量的拷贝数变异(copy number variations,CNVs)。染色体片段缺失或重复可导致剂量敏感性基因拷贝数发生变化从而引起各种疾病表型,利用高分辨率基因组芯片技术已发现许多疾病与某些关键基因座位的CNVs相关。Smith-Magenis综合征(SMS)是由于包含RAI1基因的染色体区域17p11.2微缺失或RAI1基因杂合性突变而导致的先天性多发畸形综合征,其出生发病率约为1:25 000,但实际的发病率可能接近1:15 000。自1982年Smith报道以来,已累积报道百余例。但在国内,由于开展基因芯片检测的临床机构较少,且临床医生对此病认识不足,至今仍少有报道。笔者对1例SMS患儿进行了分子诊断,并分析了基因型-表型之间的相关性,以期提高对此病的认识。
孢子丝菌病及影响申克孢子丝菌毒力因素的研究进展

孢子丝菌病是一种由双相病原真菌申克孢子丝菌感染引起的亚急性或慢性深部真菌病。其不同临床表现取决于申克孢子丝菌菌株的不同毒力因素以及宿主的不同免疫状态。黑色素在真菌致病过程中起着重要的作用,研究黑色素与真菌致病毒力之间的关系,是研究真菌发病机制和真菌耐药性等的重要工具。
心理干预对急性闭角型青光眼患者术后疗效及生存质量的影响

目的探讨急性闭角型青光眼(AACG)患者围术期实施心理干预对术后疗效及生存质量的影响。方法选取2013年4月至2014年4月该院收治的120例AACG患者,随机分为观察组和对照组各60例。对照组患者实施常规治疗,观察组患者在常规治疗的基础上实施心理干预。比较术后两组第1、4、7天的24 h眼压波动差值和术后3个月随访生存质量评分。结果观察组术后第1、4天的24 h眼压波动差值低于对照组(P<0.05),术后第7天两组24 h眼压波动差值比较无显著性差异;术后3个月随访,观察组生存质量评分高于对照组(P<0.05)。结论AACG在常规治疗的基础上联合围术期心理干预,可以提高术后临床疗效,改善患者的生存质量,值得推广。
紫杉醇脂质体单药与紫杉醇脂质体联合顺铂治疗老年中晚期

目的观察紫杉醇脂质体单药与紫杉醇脂质体联合顺铂对老年中晚期肺鳞癌的治疗效果及毒副作用。方法选择年龄≥60岁经病理学或细胞学确诊的Ⅲ/Ⅳ期肺鳞癌患者74例,随机分成紫杉醇脂质体单药组(单药组,36例)和紫杉醇脂质体联合顺铂组(联合组,38例)。单药组给予紫杉醇脂质体135 mg/m~2治疗,联合组给予以紫杉醇脂质体135 mg/m~2 +顺铂30 mg/m~2治疗,21 d为1个周期,治疗2个周期后系统评价其近期疗效。结果单药组和联合组比较,治疗有效率(36.11% vs.36.84%)和临床控制率(80.56% vs.84.21%)无显著差异(P>0.05)。Kaplan-Meier生存曲线结果显示,单药组与联合组肺癌患者的无疾病进展生存期(PFS)差异显著(P=0.006)。毒副反应方面,血液系统毒性比较差异均无统计学意义(P>0.05);非血液系统毒性中皮疹及胃肠道反应的发生率联合组明显低于单药组(P<0.05)。结论紫杉醇脂质体联合顺铂用于治疗老年中晚期肺鳞癌疗效优于紫杉醇脂质体单药,可显著延长患者的PFS,更能使患者获益。
陈苏宁针药结合治疗功能性消化不良临证经验

陈苏宁为中国医科大学教授、中国医科大学附属盛京医院中医科主任、辽宁省名中医,先后师从辽宁省名中医郭恩绵教授和杨积武教授,曾于1990-1991年在日本国立京都病院研修,并与日本著名学者田代真一合作,开始以现代医学方法研究中药。陈教授学贯中西,致力于消化系统疾病临床研究20余年,积累了丰富的诊疗经验,善于运用中医综合疗法治疗消化病。笔者有幸跟师学习,获益颇多。现将陈教授针药结合治疗功能性消化不良(functional dyspepsia, FD)经验介绍如下。
在便秘辨证与辨病中运用直肠指诊的经验与体会

肛管直肠指诊作为肛门直肠疾病重要的检查法,对痔、肛瘘、肛周脓肿、肛门直肠肿瘤等疾病具有重要的诊断价值。笔者在临床运用直肠指诊过程中体会到,直肠指诊用得好,也同样可掌握有关便秘的很多信息,有助于便秘的辨病与辨证。现就在便秘的疾病诊断及辨证治疗中运用直肠指诊的经验与体会作一介绍。
局部应用基质胶提高去势大鼠钛植入体稳定性的研究

我们通过双侧卵巢摘除术建立去势大鼠模型,3个月后进行胫骨植入术,观察基质胶对植入体周围新骨生成、骨整合及机械稳定性的影响。
脂肪细胞的起源

脂肪组织是机体内最重要的能量储存器官,具有产热、维持体温、内分泌和支持填充等多种功能,脂肪的功能异常被证实与2型糖尿病、高血压、动脉粥样硬化和肿瘤等多种疾病相关。一般认为在发育过程中脂肪细胞起源于中胚层,但近年来也有研究发现部分脂肪细胞起源于外胚层神经嵴。在发育完成后,机体内仍存在前脂肪细胞,在适当的条件下可继续分化为脂肪细胞,这些前脂肪细胞与血管有着密切的联系,但其在体分布及起源则有待证明。近年来对前脂肪细胞分化为脂肪细胞的终末分化过程研究较多,然而脂肪细胞的起源,以及间充质干细胞向前脂肪细胞的定向分化过程却仍不清楚。本文总结了近年来该领域的一系列研究成果,对脂肪细胞的起源问题进行综述。
HCN通道在神经系统中的分布及功能

超极化激活的环核苷酸门控的阳离子通道(hyperpolarization activated cyclic nucleotide gated channels,HCN),分为四个亚型:HCN1、HCN2、HCN3和HCN4。关于其在神经系统中作用的研究有很多,但是有些研究的结果似乎是矛盾的,这些矛盾的结果可能与其分布特点有关。在神经系统中,HCN通道的各个亚型的分布具有差异,这决定了其作用的差异性,因此在不同区域有其特定的生理功能。本文从不同脑区、脊髓及外周DRG等方面综述了HCN通道4个亚型在神经系统的分布,并且针对具体组织、核团分析其作用和生理功能。
嗜铬细胞瘤/副神经节瘤遗传基因研究进展

嗜铬细胞瘤(PHEO)/副神经节瘤(PGL)源于有神经嵴交感和副交感链嗜铬组织分布的部位,PHEO在肾上腺髓质;PGL位于自颅底至骨盆的肾上腺外交感或副交感神经的副神经节,最常见于头颈部、腹部肾血管附近或Zuckerkandl体,后者位于肠系膜下动脉起始部,是肾上腺外最大的嗜铬组织。嗜铬细胞瘤/副神经节瘤(pheochromocytoma/ paraganglioma,PPGL)约占高血压人群的0.2% ~ 0.6%,在交感神经系统肿瘤中约占7%,年发病率0.3/1 000 000。20 ~ 50岁多发,女多于男。生前从未被怀疑过的高达75%,约15%有家族性。PPGL的遗传背景、临床表现和恶性程度均不相同。约10% ~20%的病例在儿童期得到诊断,男性稍多。在高血压患儿中,有儿茶酚胺分泌瘤者可达1.7%,大多数为嗜铬细胞瘤。来自交感神经的PGL有功能,而来自副交感神经的PGI则多无功能,决定于其发生部位和突变类型。18岁以下的PHEO患者中,约56%系基因突变所致;<10岁则高达70%。遗传性PHEO常为双侧,而PPGL常为多灶性。一般说来,多中心肿瘤常高度提示家族性疾病,在PPGL患者中较常见。迄今共报道了14个PPGL易感基因:NF1、RET、VHL、SDHD、SDHC、SDHB、EGLN1/PHD2、KIF1、SDH5/SDHAF2、IDH1、TMEM127、SDHA、MAX和HIF2。其中EGLN1/PHD2、KIF1和IDH1的作用目前未被其他研究证实,表明这些基因突变不是遗传性PPGL的常见原因。EPAS1/HIF2A突变也只报道于少数患者,有待大量报道确认。
我国护理人员在职培训效果评价及影响因素研究进展

护理人员作为保证和促进医院发展的核心群体,其综合素质是影响患者身心健康和医院服务质量与效率的主要因素。有计划、系统地培训是开发护理人力资源,提高其素质的最有效途径。然而,在培训领域有一个共识:只有很少部分的培训所学内容能够在实际工作中得以应用,培训转化遭遇阻碍。这一现象在护理人力资源培训中也存在,主要体现在培训体系低效、培训管理缺乏导向性和牵引性,造成培训不能有效转化为护理人员个人工作绩效和组织绩效的提升,这种效率低下的培训不仅不能提高护理人员的业务技能和组织工作效能,反而会增加组织的管理成本,造成资源浪费。因此,如何提高护理人员培训工作的有效性,成为重要且迫切需要解决的课题。本文从我国护理人员培训效果评价及影响因素研究进展方面进行综述,希望能够从培训是否发生作用,以及培训如何发生作用的角度,对提高护理人员培训成果转化提供新的思路和研究方向。
雾霾天气空气污染对机体呼吸系统的急性损伤效应研究

20世纪以来,随着我国工业化、城镇化的快速发展,环境污染问题日趋严峻,大气污染已经成为最受人们关注的环境卫生问题。我国2011年10月底,沈阳、北京、石家庄、太原、郑州、长沙、武汉、重庆等地区都被雾霾天气笼罩。中国各地持续雾霾天气引起社会广泛关注。有研究表明,高浓度的细颗粒物(粒径≤2.5 μm的颗粒物,PM~(2.5))是造成空气污染的根本原因。如今,PM~(2.5)已经是我国大多数城市的首要污染物,并呈现污染程度重、范围广、时间长的特点。本研究通过比较不同空气状态下调查对象的主观感受、痰液炎性因子等急性效应指标的差异,旨在评价雾霾对呼吸道急性损伤效应,为大气污染对呼吸系统急性损伤评价提供科学依据。
完全腔镜下甲状腺癌手术15例

自从Gagner首次开展腔镜下甲状腺切除术以来,由于其良好的美容效果,腔镜手术已经在甲状腺良性肿块治疗中被广泛地应用。但对于甲状腺癌,由于尚存在争议而未能广泛地开展。我科自2012年2月至今共完成15例全腔镜下甲状腺切除术(total endoscopic thyroidectomy,TET),效果满意。现分析报道如下。
血管内栓塞治疗多发性硬脑膜动静脉瘘一例

讨论硬脑膜动静脉瘘是指发生在硬脑膜、大脑镰、小脑幕和静脉窦上的异常动静脉分流,以颈外、颈内动脉或椎动脉的脑膜支供血,通过异常的短路引流入相邻的静脉并可逆流至软脑膜静脉。可发生于硬脑膜的任何部位,但以横窦、乙状窦、海绵窦及小脑幕多见,多见于成年人。本病例以上矢状窦为主,且为多发性。多发性硬脑膜动静脉瘘发病原因目前有先天性学说(先天性发育异常)和后天性学说(如颅脑外伤、颅脑手术、颅内感染、静脉窦血栓等)。硬脑膜动静脉瘘形成后,主要的血流动力学变化是脑静脉内压力增高和血流速度增快。静脉内压力增高引起静脉引流方向改变,从而导致该静脉引流区域淤血、水肿,最终致神经功能障碍,甚至发生脑出血。Cognard等将硬脑膜动静脉瘘进行如下分型:Ⅰ型,静脉引流入静脉窦,血流为顺行;Ⅱ型,静脉引流入静脉窦,血流逆行入窦(Ⅱa),血流逆行入皮质静脉(Ⅱb),或是两者均有(Ⅱa +b);Ⅲ型:静脉直接引流至皮质静脉,不伴有静脉扩张;Ⅳ型:静脉直接引流至皮质静脉,伴静脉扩张;V型:静脉引流至脊髓的髓周静脉。本例病变广泛、复杂,累及双侧颈内、颈外系统及椎动脉系统,其临床表现与瘘口部位、瘘口血流量和静脉引流类型相关,主要有搏动性耳鸣、颅内杂音、头痛、颅内压增高、颅内出血、神经功能障碍和脊髓功能障碍等。多发性硬脑膜动静脉瘘的诊断金标准仍是DSA,可明确供血动脉和瘘口位置及静脉引流方向。
访问学习匈牙利医院感染防控工作的体会

2012年9月笔者有幸参加了天津市卫生局组织的护理骨干赴匈牙利为期3周的学习与交流,参观了5所医院,尤其对匈牙利医院感染防控工作颇有感触,现汇报如下。
超磁分离技术在矿井水处理中的应用

以常规含悬浮物的矿井水为研究对象,在对比分析超磁分离技术与传统工艺的基础上,通过对超磁分离处理站的实际运行情况调研,总结了超磁分离净化技术处理矿井水的设计关键问题。
An Experimental Study of Separation Control on Ultra-Highly-Loaded Low Pressure Turbine Blade by Surface Roughness

An experimental study is conducted to improve an aft-loaded ultra-high-lift low pressure turbine (LPT) blade at low Reynolds number (Re) in steady state. The objective is to investigate the effect of blade roughness on the performance of LPT blade. The roughness is used as a passive flow control method which is to reduce total pressure loss and expand LPT operating margin. The experiment is performed on a low-speed cascade facility. 3 roughness heights and 3 deposit positions are investigated in the experiment which forms a large test matrix. A three-hole probe is used to detect flow aerodynamic performance and a hotwire probe is used to detect the characteristic of suction boundary layer. Regional roughness can suppress separation loss and bring fairly low turbulent dissipation loss. Detailed surveys near the blade surface shows that the loss reduction is due to the disappearance of separation bubble from the early transition onset.
温州市浦东水厂排泥水处理工程设计

温州市浦东水厂净水设计规模为26万m~3/d,对其排泥水处理工程设计中的有关设计思路、工艺流程、设计参数选择、构筑物选型及设备配置情况作了概述。指出在净水厂的排泥水处理系统设计中,必须对水厂的进出水水质、工艺流程、运行工况进行具体分析,从而确定设计规模、构筑物和设备选型。同时应根据工程占地情况,优化设计系统水力流程和平面布置。
浙江省《城镇防涝规划标准》编制实践与探索

为规范浙江省城镇排水防涝规划编制,浙江省住房和城乡建设厅组织编制了《城镇防涝规划标准》。结合编制过程中的体会,介绍了标准编制背景、结构框架,阐述了标准编制过程中关于短历时雨型名称更正、水利排涝重现期与城建排水重现期的关系、高重现期长历时径流系数的修正、数学模型的作用及下凹式绿地应用等方面的思考。
东太湖水源臭氧-活性炭工艺消毒副产物的生成规律与控制

对以东太湖水为水源的臭氧—活性炭处理工艺和常规处理工艺净水厂的消毒副产物生成情况进行了一年的检测,研究了臭氧—活性炭和常规处理工艺各处理单元对消毒副产物生成势的作用情况。结果表明,臭氧—活性炭和常规处理工艺的出厂水中均含有三卤甲烷、卤乙酸、卤乙腈等消毒副产物;与常规处理工艺相比,臭氧—活性炭处理工艺出水中的消毒副产物种类少、总量低,但三溴甲烷、二溴乙酸的生成量高;臭氧氧化能使消毒副产物生成势提高,砂滤工艺对消毒副产物生成势的去除效果稳定,混凝—沉淀工艺比其他工艺单元对消毒副产物生成势的去除效果好,活性炭工艺在夏季对消毒副产物生成势的处理效果比其他季节好。
Multiple target implementation for a doubly fed induction generator based on direct power control under unbalanced and distorted grid voltage

This paper presents a multiple target implementation technique for a doubly fed induction generator(DFIG) under unbalanced and distorted grid voltage based on direct power control(DPC).Based on the mathematical model of DFIG under unbalanced and distorted voltage,the proportional and integral(PI) regulator is adopted to regulate the DFIG average active and reactive powers,while the vector PI(VPI) resonant regulator is used to achieve three alternative control targets:(1) balanced and sinusoidal stator current;(2) smooth instantaneous stator active and reactive powers;(3) smooth electromagnetic torque and instantaneous stator reactive power.The major advantage of the proposed control strategy over the conventional method is that neither negative and harmonic sequence decomposition of grid voltage nor complicated control reference calculation is required.The insensitivity of the proposed control strategy to DFIG parameter deviation is analyzed.Finally,the DFIG experimental system is developed to validate the availability of the proposed DPC strategy under unbalanced and distorted grid voltage.
Analysis of key technologies and development of integrated digital processing system for cast blasting design

Casting blast can greatly reduce the stripping cost and improve the production capacity of opencast coal mines. Key technologies including high bench blasting, inclined hole, millisecond blasting, pre-splitting blasting and casting blast parameters determination which have influence on the effect of casting blast have been researched with the combination of the ballistic theory and experience in mines. The integrated digital processing system of casting blast was developed in order to simplify the design process of casting blast, improve working efficiency and veracity of design result and comprehensively adopt the software programming method and the theory of casting blast. This system has achieved five functions, namely, the 3D visualization graphics management, the intelligent management of geological information, the intelligent design of casting blast, the analysis and prediction of the blasting effect and the automatic output of the design results. Long-term application in opencast coal mines has shown that research results can not only reduce the specific explosive consumption and improve the blasting effect, but also have high value of popularization and application.
Processing map and hot working mechanisms of Cu-Ag alloy in hot compression process

For Gu-Ag alloy, an important parameter called workability in the forming process of materials can be evaluated by processing maps yielded from the stress–strain data generated by hot compression tests at temperatures of 700–850 °C and strain rates of 0.01–10 s~(-1). And at the true strain of 0.15, 0.35 and 0.55, respectively, the responses of strain-rate sensitivity, power dissipation efficiency and instability parameter to temperature and strain rate were studied. Instability maps and power dissipation maps were superimposed to form processing maps, which reveal the determinate regions where individual metallurgical processes occur and the limiting conditions of flow instability regions. Furthermore, the optimal processing parameters for bulk metal working are identified clearly by the processing maps.
JIPB Board, supporting the plant science community through teamwork

The purpose of scientific journals is to serve as a public depository for research endeavors, allowing people to share research results and opinions with their peers. In the fastdeveloping modern world, various tools are available to evaluate the track record, or publication profile of a scientist. Pursuits to achieve research results that are published in the highest impact factor (IF) journals has often become the aim of the “game”, Consequently, manipulating publications to obtain higher impact factors has also become the aim of game in some journals. However, at JIPB, we do things differently.
Application of the Material Balance Method in Paleoelevation Recovery: A Case Study of the Longmen Mountains Foreland Basin on the Eastern Margin of the Tibetan Plateau

We applied the material balance principle of the denudation volume and sedimentary flux to study the denudation-accumulation system between the Longmen Mountains (Mts.) and the foreland basin. The amount of sediment in each sedimentation stage of the basin was estimated to obtain the denudation volume, erosion thickness and deposit thickness since the Late Triassic Epoch, to enable us to recover the paleoelevation of the provenance and the sedimentary area. The results show the following: (1) Since the Late Triassic Epoch, the elevation of the surface of the Longmen Mts. has uplifted from 0 m to 2751 m, and the crust of the Longmen Mts. has uplifted by 9.8 km. Approximately 72% of the materials introduced have been denuded from the mountains. (2) It is difficult to recover the paleoelevation of each stage of the Longmen Mts. foreland basin quantitatively by the present-day techniques and data. (3) The formation of the Longmen Mts. foreland basin consisted of three stages of thrust belt tectonic load and three stages of thrust belt erosional unload. During tectonic loading stages (Late Triassic Epoch, Late Jurassic–Early Cretaceous, Late Cretaceous –Miocene), the average elevation of Longmen Mts. was lower (approximately 700–1700 m). During erosional unloading stages (Early and Middle Jurassic, Middle Cretaceous and Jiaguan, Late Cenozoic), the average elevation of Longmen Mts. was high at approximately 2000–2800m.
Crust and Upper Mantle Electrical Resistivity Structure in the Panxi Region of the Eastern Tibetan Plateau and Its Significance

The Panxi region is located in the frontal zone of positive squeezing subduction and side squeezing shearing between the Indian plate and the Eurasian plate. The long-period magnetotelluric (LMT) and broadband magnetotelluric (MT) techniques are both used to study the deep electrical conductivity structure in this region; magnetic and gravity surveys are also performed along the profile. According to the 2-D resistivity model along the Yanyuan-Yongshan profile, a highconductivity layer (HCL) exists widely in the crust, and a high-resistivity block (HRB) exists widely in the upper mantle in general, as seen by the fact that a large HCL exists from the western Jinpingshan tectonic zone to the eastern Mabian tectonic zone in the crust, while the HRB found in the Panxi tectonic zone is of abnormally high resistivity in that background compared to both sides of Panxi tectonic zone. In addition, the gravity and magnetic field anomalies are of high value. Combined with geological data, the results indicate that there probably exists basic or ultrabasic rock with a large thickness in the lithosphere in the Panxi axial region, which indicates that fracture activity once occurred in the lithosphere. As a result, we can infer that the high-resistivity zone in the Panxi lithosphere is the eruption channel for Permian Emeishan basalt and the accumulation channel for basic and ultrabasic rock. The seismic sources along the profile are counted according to seismic record data. The results indicate that the most violent earthquake sources are located at the binding site of the HRB and the HCL, where the tectonic activity zone is generally acknowledged to be; however, the earthquakes occurring in the HCL are not so violent, which reflects the fact that the HCL is a plastic layer, and the fracture threshold of a plastic layer is low generally, making high stress difficult to accumulate but easy to release in the layer. As a result, a higher number of smaller earthquakes occurred in the HCL at Daliangshan tectonic zone, and violent earthquakes occurred at the binding site of high- and low-resistivity blocks at the Panxi tectonic zone.
Cenozoic Tectonic Evolution of the Arcuate Structures in the Northeast Tibetan Plateau

The northeast Tibetan plateau contains important information on the northeastward growth of the Tibetan plateau. It is bounded by the Ordos Block to the east, the Alxa Block to the north, and the Tibetan Plateau to the south (inset in Fig. 1; Tapponnier et al., 2001), and has undergone complex intracontinental deformation during the Cenozoic. In this region, the northeast-convex arcuate structures developed northeastward, and are composed of a series of Cenozoic NW–SE-trending basin-and-range terrain, i.e., the Haiyuan–Xingrenbu basin, Tongxin basin and Hongsipu basin, the Yueliang Shan-Nanhua Shan-Huangjiawa Shan, Xiang Shan-Xiangjing Shan, Yantong Shan and Luo Shan-Niushou Shan, which is geometrically similar with the American basin-range tectonics. The front edge of the basin-range is associated with the Haiyuan Fault (F_1), Xiang Shan–Tianjin Shan Fault (F_2), Yantong Shan Fault (F_3) and Luo Shan–Niushou Shan Fault (F_4) from southwest to northeast, showing four convex-to-thenortheast oroclinal structures (Fig. 1; IG & SBNHAP, 1990; Zhang et al., 1990;Wang et al., 2013).
Expanding the Wilson Cycle Based on Worldwide Comparison of Continental Structures Revealed by Lithospheric Geophysical Investigations

Worldwide comparison of lithospheric investigation results achieved from projects of COCORP, BIRPS, DEKORP, LITHOPROBE, ICDP, ECORS and SINOPROBE enables us to expand the classical Wilson cycle, which mainly describes evolution of ocean plates, into a complete and detailed cycle that describes generation, development and evolution of both ocean and continent plates. The expanded Wilson cycle presented in this paper introduces the evolution sequences of continental lithospheric processes by adding into the classical Wilson cycle with ocean-continent transition, continental collision and accretion, as well as continental rifting and splitting in details. These mentioned continental lithospheric processes have been presented by the author in a series of recent review papers in detail, and their summary and further deduction is presented in this paper.
洞庭湖湘江入湖口至出湖口水域表层沉积物中重金属时空分布特征与生态风险

基于2007-2012年连续对洞庭湖湘江入湖口至出湖口水域5个采样点的表层沉积物中Cd、Hg、As、Cu、Pb、Cr和Zn等7种重金属含量分析,对该水域表层沉积物中重金属的时空分布特征进行了探讨,并采用沉积物质量基准法对其生态风险进行了评价. 结果表明,Cd、Hg、As、Cu、Pb、Cr和Zn的含量分别为0. 54-79.90 mg·kg~(-1)、0.046-0.712 mg·kg~(-1)、15.2-289.0 mg·kg~(-1)、29.0-217.0 mg·kg~(-1)、6.0-246.0 mg·kg~(-1)、65.4-269.0 mg·kg~(-1)和41.4-632.0 mg·kg~(-1),其大小顺序为Zn>Cr>Pb>Cu>As>Cd>Hg;Cd、Hg、As、Cu、Pb和Zn含量沿程总体呈“ V” 形变化趋势,Cr含量沿程变化较小,重金属含量年际变化较为稳定;As具有较高生态风险,其余污染物具有较低生态风险,不同污染物生态风险的大小顺序为As>Cd>Cr>Cu>Pb>Zn>Hg,S1和S3具有较高生态风险,其余点位具有较低生态风险,不同点位生态风险的大小顺序为S1>S3>S5>S2>S4.
中海达智能燃气管网巡检系统功能建设

结合电子地图可以展示GIS管网及其设备信息;可以进行客户端图资查询展示;用户可自行选择电子地图或卫星地图进行移动端图资查询,展示移动终端具备地图展示功能;结合任务和设备的相关信息,可以在地图上绘制管件设备,提供地图上的巡检查询操作;后台系统具备加载地图及影像图展示功能;支持多源(天地图、谷歌、卫片等)离线地图展示地图数据。
移动GIS支持下的海洋渔业信息采集与管理

海洋渔业信息是地理国情信息的重要组成部分,然而长期以来受制于数据规范不一、数据更新快、数据源环境复杂等问题,对海洋渔业信息的采集与管理一直处于缺失或滞后的状态。针对这一问题,本文结合实际生产需要,对海洋渔业信息数据进行分类规范,在此基础上引入移动GIS技术,通过移动客户端实现野外复杂环境信息采集,而在移动GIS后台管理相关数据,形成了一个海洋渔业信息的动态监测管理系统,并成功应用于宁波市海洋与渔业综合管理平台。
利用高精度DSM数据提取建筑物轮廓算法研究

基于DSM数据提取建筑物轮廓信息是快速自动构建建筑物三维模型的基础和前提。本文将随机抽样一致性算法RANSAC引入到DSM点云分割中,提出了一种基于随机抽样一致性算法模型的建筑物面片识别和轮廓提取算法,实现了高精度DSM数据的建筑物轮廓信息提取,试验验证了本文方法的精度和可靠性。
面向灾害风险评估的台风数值模拟及可视化

针对具体台风对地区灾害风险影响的快速应急的特点,运用Shapiro台风风场模型,结合GIS技术,以201319号“天兔”台风为例,实现了台风的数值模拟、该台风具体时刻的影响区域的可视化及对广东省的灾害风等级区划,以期为应急部门的防灾减灾工作提供科学的参考依据。
矢量地理信息更新增量的传播

矢量地理信息更新增量的传播在客户数据库更新中起着至关重要的作用。本文从矢量地理信息更新增量传播的必要条件、传播过程、特殊性、传播内容,以及最终客户数据库的更新几个方面系统研究了矢量地理信息更新增量的传播,完善了地理信息更新增量传播理论;归纳了客户数据库更新的4种情况,并给出了解决方案。
细菌性阴道病患者宫颈及阴道菌群多样性的比较与分析

目的比较与分析细菌性阴道病(bacterial vaginosis,BV)患者宫颈及阴道菌群多样性的差异,探讨BV的病因及BV对不同解剖部位微生态的影响。方法采集BV患者阴道及宫颈分泌物标本,进行革兰染色及Nugent评分;并提取细菌总DNA,用通用引物对细菌16S r DNA的V3区进行扩增,将PCR产物进行变性梯度凝胶电泳(denatured gradient gel electrophoresis,DGGE)。对DNA指纹图谱特征条带切胶回收并进行克隆测序,用Gen Bank中的BLAST与已知序列比对,鉴定细菌菌种,对比分析不同生理状态下阴道及宫颈菌群的多样性。结果健康女性宫颈及阴道菌群多样性基本一致,其中乳杆菌属为优势菌,常见菌种为Lactobacillus crispatus、L.iners和L.gasseri。BV女性下生殖道菌群多样性较健康女性明显复杂,优势菌为Sneathia spp.、Atopobium vaginae及Gardnerella vaginalis等厌氧菌。BV女性宫颈菌群与阴道菌群有明显的差异,阴道菌群多样性较宫颈菌群丰富。结论健康女性下生殖道常见优势菌种为乳杆菌属;BV女性常见优势菌种则为Sneathia spp.、Atopobium vaginae及Gardnerella vaginalis等厌氧菌。女性下生殖道不同解剖部位的菌群存在差异,宫颈菌群多样性可随着阴道感染而发生改变。阴道微生态紊乱导致BV,有害菌可上行迁移而影响宫颈微生态。