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| 1 | 高光谱遥感土壤湿度信息提取研究显示文摘精准农作管理中土壤水分、土壤养分等的空间信息分布 ,可通过高光谱遥感传感器获得。本文通过对土壤的光谱反射率与土壤的表面湿度进行分析 ,比较 5种方法在反演土壤表面湿度的能力 ,并对小汤山精准农业试验区的土壤表面湿度进行高光谱填图 ,建立了较为精细的土壤水分空间分布图 ,对高光谱遥感在精准农业中深入应用进行了有效探索。 | 刘伟东 Frédéric Baret 张兵 郑兰芬 童庆禧 | 2004 | 土壤学报2004,41,5: | 82 |
| 2 | 中国企业的工资差异和所有制结构显示文摘本文采用OaxacaBlinder分解法的扩展形式,分析了1995年中国城市不同所有制企业间工资差异的决定因素。我们发现,国有企业和外商投资企业工资高于城镇集体企业,但中央直属国有企业和外商投资企业的小时工资鲜有差别。此外,我们的研究结果强有力地证明了,中国劳动力市场的分割或者说是多层次、纯所有制差别和工作小时差别是观测到的工资差距的主要决定因素。我们的研究结果还强调了,尽管外商投资企业提供了较高的年总收入,但这是以更长的工作时间为代价的。 | 陈弋 Sylvie Démurger MartinFournier 杨真真 | 2005 | 世界经济文汇2005,,6: | 81 |
| 3 | 中国黄土和阿拉斯加黄土磁化率气候记录的两种模式探讨显示文摘在中国和中欧黄土-古土壤研究中发现的磁化率与成壤作用(或古气候温湿程度)的正相关性已被第四纪科学家广泛认识,并应用于古气候研究中。成壤过程形成的亚铁磁性矿物被认为是古土壤磁化率增加的主要原因;然而,这一模式并不一定适用于其他黄土沉积地区,如阿拉斯加和西伯利亚黄土沉积显示了一个完全相反的磁化率行为,即在黄土层获高磁化率值而在古土壤层获低磁化率。这种相反的关系过去被解释为磁化率反映的是与风动力吹来的亚铁磁性矿物的含量,即与风速或风力大小有关。本研究发现阿拉斯加黄土与古土壤的磁性矿物性质有明显差异,不仅仅是粒径的大小,还有磁性矿物的种类即矿物相的差别。这一证据很难单纯以风力强度的大小来解释,意味着阿拉斯加古土壤的低磁化率至少部分是在成壤过程中亚铁磁性矿物发生改变(如溶解)而造成,表明阿拉斯加黄土和中国黄土的磁化率与古气候记录可能存在两种模式,即氧化和还原条件下的成土模式。黄土磁化率在不同的气候(温度湿度)条件下有着不同的对应关系:在低降水量、高蒸发量的干旱氧化成壤条件下,利于亚铁磁性矿物的生成,其磁化率与古气候的关系呈正相关,如中国和中亚黄土;在高纬高湿的还原成壤条件下,亚铁磁性矿物会被破坏被分解,其磁化率与古气候呈负相关关系,如阿拉斯加黄土。如果成壤条件在氧化和还原之间来回变换,那么就很难找到两者之间的联系。因此,将磁化率应用于古气候的重建时要加倍的小心。 | 刘秀铭 夏敦胜 刘东生 丁仲礼 陈发虎 J.E.Begét | 2007 | 第四纪研究2007,27,2: | 132 |
| 4 | 中国经济转型中城镇劳动力市场分割问题--不同部门职工工资收入差距的分析显示文摘本文利用1995年和2002年的城镇职工工资收入数据和Oaxaca-Blinder分解方法的扩展形式,分析了这一期间中国城镇劳动力市场分割效应对不同部门之间职工收入差距变动的影响作用。我们分解分析结果证实了不同部门之间职工收入决定中的分割效应不仅是存在的,而且仍有不断增强的趋势。这主要表现在垄断部门与竞争部门之间职工收入差距出现了明显扩大的趋势,而且部门之间收入差距中市场分割因素解释的比重不断上升。 | Sylvie Démurger Martin Fournier 李实 魏众 | 2009 | 管理世界2009,25,3: | 84 |
| 5 | Esophageal cancer: Risk factors,screening and endoscopic treatment in Western and Eastern countries显示文摘Esophageal cancer is one of the most unknown and deadliest cancers worldwide,mainly because of its extremely aggressive nature and poor survival rate.Esophageal cancer is the 6th leading cause of death from cancer and the 8th most common cancer in the world.The 5-year survival is around 15%-25%.There are clear differences between the risk factors of both histological types that affect their incidence and distribution worldwide.There are areas of high incidence of squamous cell carcinoma(some areas in China) that meet the requirements for cost-effectiveness of endoscopy for early diagnosis in the general population of those areas.In Europe and United States the predominant histologic subtype is adenocarcinoma.The role of early diagnosis of adenocarcinoma in Barrett's esophagus remains controversial.The differences in the therapeutic management of early esophageal carcinoma(high-grade dysplasia,T1 a,T1 b,N0) between different parts of the world may be explained by the number of cancers diagnosed at an early stage.In areas where the incidence is high(China and Japan among others) early diagnoses is more frequent and has led to the development of endoscopic techniques for definitive treatment that achieve very effective results with a minimum number of complications and preserving the functionality of the esophagus. | María José Domper Arnal ángel Ferrández Arenas ángel Lanas Arbeloa | 2015 | World Journal of Gastroenterology2015,21,26: | 116 |
| 6 | Polyorogenic evolution of the Paleoproterozoic Trans-North China Belt--New insights from the Luliangshan-Hengshan-Wutaishan and Fuping massifs显示文摘 | Michel Faure Pierre Trap Wei Line Patrick Monié Olivier Bruguier | 2007 | Episodes2007,30,2: | 63 |
| 7 | Adverse events with bismuth salts for Helicobacter pylori eradication:Systematic review and meta-analysis显示文摘AIM: To assess the safety of bismuth used in Helico- bacter pylori (H pylori) eradication therapy regimens. METHODS: We conducted a systematic review and meta-analysis. MEDLINE and EMBASE were searched (up to October 2007) to identify randomised controlled tri- als comparing bismuth with placebo or no treatment, or bismuth salts in combination with antibiotics as part of eradication therapy with the same dose and duration of antibiotics alone or, in combination, with acid suppres- sion. Total numbers of adverse events were recorded. Data were pooled and expressed as relative risks with 95% confidence intervals (CI). RESULTS: We identified 35 randomised controlled tri- als containing 4763 patients. There were no serious adverse events occurring with bismuth therapy. There was no statistically significant difference detected in total adverse events with bismuth [relative risk (RR) = 1.01; 95% CI: 0.87-1.16], specific individual adverse events, with the exception of dark stools (RR = 5.06; 95% CI: 1.59-16.12), or adverse events leading to withdrawal of therapy (RR = 0.86; 95% CI: 0.54-1.37). CONCLUSION: Bismuth for the treatment of H pylori is safe and well-tolerated. The only adverse event oc- curring significantly more commonly was dark stools. | Alexander C Ford Peter Malfertheiner Monique Giguère José Santana Mostafizur Khan Paul Moayyedi | 2008 | World Journal of Gastroenterology2008,14,48: | 62 |
| 8 | 深度学习在设备故障预测与健康管理中的应用显示文摘在智能制造背景下,大数据驱动的设备故障预测与健康管理日益受到各界重视。深度学习能够在层次结构的特征提取过程中发现更多的隐藏知识,在领域自适应方面具有良好的数据适应性,近年来逐渐成为设备故障预测与健康管理的研究热点,并在设备故障诊断和预测中得到了广泛的应用。通过系统回顾近年来深度学习在设备故障预测与健康管理中应用,总结、分类和解释关于这一热点主题的主要文献,讨论了各种体系结构和相关理论。在此基础上,阐述了深度学习在设备故障诊断和预测方面所取得的主要成果、面临的挑战、以及未来的发展趋势,为设备故障预测与健康管理领域选择、设计或实现深度学习架构,提供明确的方向。 | 陈志强 陈旭东 JoséValente de Olivira 李川 | 2019 | 仪器仪表学报2019,40,9: | 67 |
| 9 | Laparoscopic natural orifice specimen extraction-colectomy: A systematic review显示文摘Over the last 20 years, laparoscopic colorectal surgery has shown equal efficacy for benign and malignant colorectal diseases when compared to open surgery. However, a laparoscopic approach reduces postoperative morbidity and shortens hospital stay. In the quest to optimize outcomes after laparoscopic colorectal surgery, reduction of access trauma could be a way to improve recovery. To date, one method to reduce access trauma is natural orifice specimen extraction(NOSE). NOSE aims to reduce access trauma in laparoscopic colorectal surgery. The specimen is delivered via a natural orifice and the anastomosis is created intracorporeally. Different methods are used to extract the specimen and to create a bowel anastomosis. Currently, specimens are delivered transcolonically, transrectally, transanally, or transvaginally. Each of these NOSEprocedures raises specific issues with regard to operative technique and application. The presumed benefits of NOSE-procedures are less pain, lower analgesia requirements, faster recovery, shorter hospital stay, better cosmetic results, and lower incisional hernia rates. Avoidance of extraction site laparotomy is the most important characteristic of NOSE. Concerns associated with the NOSE-technique include bacterial contamination of the peritoneal cavity, inflammatory response, and postoperative outcomes, including postoperative pain and the functional and oncologic outcomes. These issues need to be studied in prospective randomized controlled trials. The aim of this systematic review is to describe the role of NOSE in minimally invasive colorectal surgery. | Albert M Wolthuis Anthony de Buck van Overstraeten André D'Hoore | 2014 | World Journal of Gastroenterology2014,20,36: | 65 |
| 10 | Mutation analysis of novel human liver-related putative tumor suppressor gene in hepatocellular carcinoma显示文摘AIM: To find the point mutations meaningful for inactivationof liver-related putative tumor suppressor gene (LPTS) gene,a human novel liver-related putative tumor suppressor geneand telomerase inhibitor in hepatocellular carcinoma.METHODS: The entire coding sequence of LPTS genewas examined for mutations by single strand conformationpolymorphism (SSCP) assay and PCR products directsequencing in 56 liver cancer cell lines, 7 ovarian cancerand 7 head & neck tumor cell lines and 70 pairs of HCCtissues samples. The cDNA fragment coding for the mostfrequent mutant protein was subcloned into GST fusionexpression vector. The product was expressed in E. coliand purified by glutathione-agarose column. Telomericrepeat amplification protocol (TRAP) assays wereperformed to study the effect of point mutation totelomerase inhibitory activity.RESULTS: SSCP gels showed the abnormal shifting bandsand DNA sequencing found that there were 5 differentmutations and/or polymorphisms in 12 tumor cell lineslocated at exon2, exon5 and exon7. The main alterationswere A(778)A/G and A(880)T in exon7. The change in siteof 778 could not be found in HCC tissue samples, while themutation in position 880 was seen in 7 (10 %) cases. Themutation in the site of 880 had no effect on telomeraseinhibitory activity.CONCLUSION: Alterations identified in this study arepolymorphisms of LPTS gene. LPTS mutations occur in HCCbut are infrequent and of little effect on the telomeraseinhibitory function of the protein. Epigenetics, such asmethylation, acetylation, may play the key role in inactivationof LPTS. | ChengLiao Mu-junZhao JingZhao HaiSong PascalPineau AgnésMarchio AnneDejean PierreTiollais Hong-YangWang Tsai-PingLi | 2003 | World Journal of Gastroenterology2003,9,1: | 67 |
| 11 | Pathophysiological 角色和在糖尿病的 nephropathy 的发炎的治疗学的含意显示文摘 Diabetes mellitus and its complications are becoming one of the most important health problems in the world. Diabetic nephropathy is now the main cause of end-stage renal disease. The mechanisms leading tothe development and progression of renal injury are not well known. Therefore, it is very important to f ind new pathogenic pathways to provide opportunities for early diagnosis and targets for novel treatments. At the present time, we know that activation of innate immunity with development of a chronic low grade inflammatory response is a recognized factor in the pathogenesis of diabetic nephropathy. Numerous experimental and clinical studies have shown the participation of different inflammatory molecules and pathways in the pathophysiology of this complication. | Desirée Luis-Rodríguez Alberto Martínez-Castelao José Luis Górriz Fernando de lvaro Juan F Navarro-González | 2012 | World Journal of Diabetes2012,3,1: | 55 |
| 12 | 广东大宝山地区重金属污染水田土壤的Cu Pb Zn Cd全量与DTPA浸提态含量的相互关系研究显示文摘通过现场采样及室内测试,分析了广东大宝山地区酸性金属矿长期污染水稻田的土壤特性,研究了重金属Cu、Pb、Zn、Cd的全量与DTPA浸提态含量的相互关系。结果表明,除Pb外,Cu、Zn和Cd的全量不同程度超标,而4种重金属的DTPA浸提态含量均较高,Pb和Cu的DTPA浸提率高于Zn和Cd。金属全量及其DTPA浸提量之间极显著相关。土壤酸性和有机质对金属Pb、Zn、Cd的DTPA浸出率表现出显著的促进作用,而与Cu的浸出率相关不显著。DTPA态金属可以作为测定该类水稻土壤金属有效态含量的简便指标。金属的全量、种类,土壤pH、有机质等属性,以及农业耕作等因素影响金属的DTPA态含量及有效性。 | 李永涛 刘科学 张池 Thierry Becquer Cécile Quantin MarcB enedtti Patrick Lavelle 戴军 | 2004 | 农业环境科学学报2004,23,6: | 60 |
| 13 | 专门化、多样化和中国地区工业产业增长的关系显示文摘本文通过分析中国29个省(除西藏外)的30个工业产业在1988-1997期间的数据,揭示了工业结构和经济增长之间的关系。本文除研究了传统的生产要素的影响外,重点探讨了产业专门化、产业多样化、竞争度和一省发展的初始水平等因素的作用。结果表明,一个产业外部工业环境的多样性和产业内的竞争度有利于产业的增长,但产业专门化的影响为负。工业结构对于增长的影响在很大程度上依赖于产业的性质及其地理位置。 | CécileBatisse | 2002 | 世界经济文汇2002,,4: | 60 |
| 14 | 复杂介质下保真振幅Kirchhoff深度偏移显示文摘本文详细讨论地下复杂介质地震成像问题.当速度模型含有强横向变化时,射线场会折叠形成多次走时,在这种情况下,文中证明在保真振幅叠前深度偏移时,应当考虑所有的到时才能得到定量的像.通过实例证明,在多次走时情况下,常规的共炮集、共检波器集都存在强的假像;由此提出共角度偏移的概念.最后,在多次走时下,讨论多次偏移算子(走时、相移、振幅等)的高效重构,给出了三维叠前深度偏移的快速算法. | 徐升 Gilles Lambaré | 2006 | 地球物理学报2006,49,5: | 44 |
| 15 | 郯庐断裂带(安徽段)及邻区的动力学分析与区域构造演化显示文摘依据区域构造层次划分,采用构造筛分法,层层深入,层层筛分,确定发生于各个不同时代地层/岩层内的断裂活动的同期及叠加的应力场特征。综合所有的同期应力场特征及辅以叠加的应力场特征来验证,从而确定了一个连续的、完整的断裂活动的应力场演化序列;结合区域构造变形特征分析,阐明郯庐断裂带(安徽段)的构造演化。应力场分析显示:晚三叠-早侏罗世应力场为北北西—南南东或近南北向挤压,属古特提斯构造域,断裂发生同造山走滑;早白垩世早期,应力场为北西—南东向挤压,断裂发生左行走滑运动,中国东部处于西环太平洋构造域;早白垩世晚期—古新世(始新世),区域发生北西—南东向伸展作用,断裂处于伸展断陷作用阶段;新生代,受区域上近东西向的挤压作用影响,断裂发生挤压逆冲兼右行走滑作用。 | 侯明金 朱光 Jacques Mercier Pierre Vergély 王永敏 | 2007 | 地质科学2007,42,2: | 48 |
| 16 | 现代集装箱港口体系演进理论与实证显示文摘集装箱技术的传播深刻影响了港口体系的发展,集装箱港口体系的理论模型重点解析该技术对港口体系空间时序过程的影响机制。基于相关研究进展的回顾与评述,根据港口发展的新现象与新机制,综合Hayuth和Notterboom的理论模型,介绍了集装箱港口体系的最新理论,将其分为前集装箱化、技术试验、巩固集中化、枢纽港中心化、扩散化与离岸枢纽、港口区域化等六个时序阶段,对各阶段的发展特征进行了刻画和解析,并从枢纽港本地约束、集装箱航运模式、物流资源整合、内陆配送网络与干港、政府宏观调控和港口建设市场化等角度揭示了扩散化与离岸枢纽、港口区域化两个最新阶段的发展机制。并以长江三角洲作为案例进行实证,详细解析了长江三角洲集装箱港口体系的演化过程,重点是发展变化与内在机理,验证了本文的集装箱港口体系模型,探讨了该区域可能面临的发展趋势。 | 王成金 César Ducruet | 2011 | 地理研究2011,30,3: | 41 |
| 17 | Epidemiology, demographic characteristics and prognostic predictors of ulcerative colitis显示文摘Ulcerative colitis(UC)is a chronic disease characterized by diffuse inflammation of the mucosa of the colon and rectum.The hallmark clinical symptom of UC is bloody diarrhea.The clinical course is marked by exacerbations and remissions,which may occur spontaneously or in response to treatment changes or intercurrent illnesses.UC is most commonly diagnosed in late adolescence or early adulthood,but it can occur at any age.The incidence of UC has increased worldwide over recent decades,especially in developing nations.In contrast,during this period,therapeutic advances have improved the life expectancy of patients,and there has been a decrease in the mortality rate over time.It is important to emphasize that there is considerable variability in the phenotypic presentation of UC.Within this context,certain clinical and demographic characteristics are useful in identifying patients who tend to have more severe evolution of the disease and a poor prognosis.In this group of patients,better clinical surveillance and more intensive therapy may change the natural course of the disease.The aim of this article was to review the epidemiology and demographic characteristics of UC and the factors that may be associated with its clinical prognosis. | Bruno César da Silva Andre Castro Lyra Raquel Rocha Genoile Oliveira Santana | 2014 | World Journal of Gastroenterology2014,20,28: | 48 |
| 18 | Acute-on-chronic liver failure:Pathogenesis,prognostic factors and management显示文摘Acute-on-chronic liver failure(ACLF) is increasingly recognized as a complex syndrome that is reversiblein many cases. It is characterized by an acute deterioration of liver function in the background of a pre-existing chronic liver disease often associated with a high short-term mortality rate. Organ failure(OF) is always associated, and plays a key role in determining the course, and the outcome of the disease. The definition of ACLF remains controversial due to its overall ambiguity, with several disparate criteria among various associations dedicated to the study of liver diseases. Although the precise pathogenesis needs to be clarified, it appears that an altered host response to injury might be a contributing factor caused by immune dysfunction, ultimately leading to a pro-inflammatory status, and eventually to OF. The PIRO concept(Predisposition, Insult, Response and Organ Failure) has been proposed to better approach the underlying mechanisms. It is accepted that ACLF is a different and specific form of liver failure, where a precipitating event is always involved, even though it cannot always be ascertained. According to several studies, infections and active alcoholism often trigger ACLF. Viral hepatitis, gastrointestinal haemorrhage, or drug induced liver injury, which can also provoke the syndrome. This review mainly focuses on the physiopathology and prognostic aspects. We believe these features are essential to further understanding and providing the rationale for improveddisease management strategies. | Sara Blasco-Algora José Masegosa-Ataz María Luisa Gutiérrez-García Sonia Alonso-López Conrado M Fernández-Rodríguez | 2015 | World Journal of Gastroenterology2015,21,42: | 45 |
| 19 | Hepatogenic differentiation of human mesenchymal stem cells from adipose tissue in comparison with bone marrow mesenchymal stem cells显示文摘AIM: To investigate and compare the hepatogenic transdifferentiation of adipose tissue-derived stem cells (ADSC) and bone marrow-derived mesenchymal stem cells (BMSC) in vitro. Transdifferentiation of BMSC into hepatic cells in vivo has been described. Adipose tissue represents an accessible source of ADSC, with similar characteristics to BMSC.METHODS: BMSCs were obtained from patients under-going total hip arthroplasty and ADSC from human adi-pose tissue obtained from lipectomy. Cells were grown in medium containing 15% human serum. Cultures were serum deprived for 2 d before cultivating under similar pro-hepatogenic conditions to those of liver develop-ment using a 2-step protocol with sequential addition of growth factors, cytokines and hormones. Hepatic differ-entiation was RT-PCR-assessed and liver-marker genes were immunohistochemically analysed. RESULTS: BMSC and ADSC exhibited a fibroblastic mor-phology that changed to a polygonal shape when cells differentiated. Expression of stem cell marker Thy1 de-creased in differentiated ADSC and BMSC. However, the expression of the hepatic markers, albumin and CYPs increased to a similar extent in differentiated BMSC and ADSC. Hepatic gene activation could be attributed to in-creased liver-enriched transcription factors (C/EBPβ and HNF4α), as demonstrated by adenoviral expression vec-tors.CONCLUSION: Mesenchymal stem cells can be induced to hepatogenic transdifferentiation in vitro. ADSCs have a similar hepatogenic differentiation potential to BMSC, but a longer culture period and higher proliferation ca-pacity. Therefore, adipose tissue may be an ideal source of large amounts of autologous stem cells, and may become an alternative for hepatocyte regeneration, liver cell transplantation or preclinical drug testing. | Raquel Taléns-Visconti Ana Bonora Ramiro Jover Vicente Mirabet Francisco Carbonell José Vicente Castell María José Gómez-Lechón | 2006 | World Journal of Gastroenterology2006,12,36: | 35 |
| 20 | 西酞普兰及人际心理治疗对合并抑郁症的冠心病患者的影响——加拿大心脏病人群抗抑郁药及心理治疗疗效随机试验(CREATE)显示文摘背景:目前鲜有随机对照试验就冠心病(coronary artery disease,CAD)患者重度抑郁症的治疗效果进行评估,亦无试验同时对抗抑郁药和短期心理治疗进行评估。
目的:在同时患有CAD及重度抑郁症的患者中明确选择性5.羟色胺再摄取抑制剂(西酞普兰)及人际心理治疗(interpersonal psychotherapy,IPT)在减少抑郁症状方面的短期效果。 | Francois Lespérance Nancy Frasure-Smith Diana Koszycki 顾佳(译) | 2007 | 美国医学会杂志(中文版)2007,26,4: | 36 |