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基于社会经济发展的溃坝洪水损失动态预测评价模型

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长江流域资源与环境 2008年第A1期17卷 145-148页

作者：周克发李雷南京水利科学研究院大坝安全与管理研究所江苏南京210029

基于我国现阶段的社会经济发展状况,分析了社会经济发展对水库溃坝洪水损失变化的影响,将溃坝洪水损失变化与社会经济发展速度联系起来,在某个基准年的溃坝洪水损失评估值的基础上,构建了溃坝洪水损失动态预测评价模型,给出了反映随着... 详细信息

基于我国现阶段的社会经济发展状况,分析了社会经济发展对水库溃坝洪水损失变化的影响,将溃坝洪水损失变化与社会经济发展速度联系起来,在某个基准年的溃坝洪水损失评估值的基础上,构建了溃坝洪水损失动态预测评价模型,给出了反映随着社会经济发展速度而变化的生命损失、经济损失和社会与环境影响的计算公式,并对公式中各个参数的取值进行了初步的探讨,提出了参数的建议范围。模型能够有效地反映溃坝洪水损失随着社会经济发展而变化的动态时变特性,这为溃坝洪水损失的动态预测提供了一种新的尝试。以江西省长龙水库为例,应用水库所在地的社会经济发展速度指标,在2004年溃坝洪水损失评估值的基础上进行了溃坝洪水损失动态预测评价;计算结果表明,经济损失、社会与环境影响随着社会经济的快速发展而显著增加,生命损失则随之显著减少,验证了模型的适用性。

关键词：社会经济发展溃坝洪水损失动态预测评价

基于Lotka-Volterra的城市客运走廊机动化交通方式竞争模型

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交通运输系统工程与信息 2017年第3期17卷 39-45,52页

作者：慈玉生赵家发吴丽娜哈尔滨工业大学交通科学与工程学院哈尔滨150090 黑龙江工程学院汽车与交通工程学院哈尔滨150050

为了优化城市交通结构、缓解城市交通拥堵问题,本文在考虑城市客运走廊内3种不同类型的居民出行群体的基础上,以Lotka-Volterra模型为基础建立了公共交通与私人交通的宏观竞争模型.并分析了不同交通方式的竞争强度及不同群体出行规模对... 详细信息

为了优化城市交通结构、缓解城市交通拥堵问题,本文在考虑城市客运走廊内3种不同类型的居民出行群体的基础上,以Lotka-Volterra模型为基础建立了公共交通与私人交通的宏观竞争模型.并分析了不同交通方式的竞争强度及不同群体出行规模对模型的稳定性与演化结果的影响.结果表明,交通方式的竞争强度和不同出行群体的规模比例是影响交通方式间竞争激烈程度与其竞争结果的重要因素.当竞争较为激烈时,最终只有竞争力相对较强的交通方式能在市场中存在;在竞争较为缓和的情况下,两种方式能在市场中共存.最后本文提出从调节交通方式竞争强度和改变不同类型居民出行比例两个方面来平衡两种方式间的竞争,以此优化城市客运走廊中交通结构.

关键词：交通工程客运走廊出行群体交通方式竞争模型

Chromoendoscopy with targeted biopsies is superior to white-light endoscopy for the long-term follow-up detection of dysplasia in ulcerative colitis patients:a multicenter randomized-controlled trial

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Gastroenterology Report 2021年第1期9卷 14-21,I0001页

作者： Jian Wan Qin Zhang Shu-Hui Liang Jie Zhong Jing-Nan Li Zhi-Hua Ran fa-Chao Zhi Xiao-Di Wang Xiao-Lan Zhang Zhong-HuiWen Jian-Qiu Sheng Hua-Xiu Shi Qiao Mei Kai-ChunWu State Key Laboratory of Cancer Biology National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive DiseasesFourth Military Medical UniversityXi’anShaanxiP.R.China Department of Gastroenterology Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiP.R.China Department of Gastroenterology Peking Union Medical College HospitalBeijingP.R.China Division of Gastroenterology and Hepatology Renji HospitalShanghai Jiao Tong University School of MedicineShanghaiP.R.China Department of Gastroenterology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdongP.R.China Department of Gastroenterology China-Japan Friendship HospitalBeijingP.R.China Department of Gastroenterology the Second Hospital of Hebei Medical UniversityShijiazhuangHebeiP.R.China Department of Gastroenterology West China HospitalSichuan UniversityChengduSichuanP.R.China Department of Gastroenterology PLA Army General HospitalBeijingP.R.China Department of Gastroenterology Zhongshan Hospital Affiliated to Xiamen UniversityXiamen University Institute of Digestive DiseaseXiamenFujianP.R.China Department of Gastroenterology the First Affiliated Hospital of Anhui Medical University HefeiAnhuiP.R.China

Background:Data from single-center experience or small sample-sized studies have shown that chromoendoscopy(CE)might be superior to white-light endoscopy(WLE)for dysplasia surveillance in ulcerative colitis(UC)*** performed a prospective randomized trial with a long-term follow-up to compare the detection rate of dysplasia among WLE with targeted biopsies(WLT),WLE with random biopsies(WLR),and dye-based CE with targeted biopsies(CET)in UC ***:Patients with long-standing UC were enrolled from 11 medical centers from March 2012 to December 2013 and randomized into three arms(WLT,WLR,and CET).Only high-definition endoscopy was used in all three *** patients were followed up by annual endoscopy with biopsies through December ***:With a median follow-up time of 55 months,a total of 122 patients with 447 colonoscopies were finally analysed in the per-protocol set:WLT(n=43),WLR(n=40),and CET(n=39).A total of 34 dysplastic lesions were found in 29 colonoscopies of 21 *** and CET could identify more colonoscopies that diagnosed dysplasia than WLT(8.1%and 9.7%vs 1.9%;P=0.014 and 0.004,respectively).WLR obtained more biopsied samples than WLT and CET(16.465.1 vs 4.361.4 and 4.361.4;both P3 years)follow-up was conducted for dysplasia *** trial was registered on ***(ChiCTR1900023689).

关键词： ulcerative colitis dysplasia chromoendoscopy white-light endoscopy

Mott Transition and Superconductivity in Quantum Spin Liquid Candidate NaYbSe2

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Chinese Physics Letters 2020年第9期37卷 89-94页

作者： Ya-Ting Jia Chun-Sheng Gong Yi-Xuan Liu Jian-fa Zhao Cheng Dong Guang-Yang Dai Xiao-Dong Li He-Chang Lei Run-Ze Yu Guang-Ming Zhang Chang-Qing Jin Institute of Physics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Ren min University of ChinaBeijing 100872China Peking University Shenzhen Graduate School School of Advanced MaterialsShenzhen 518055China Beijing Synchrotron Radiation facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Frontier Science Center for Quantum Information Beijing 100084China

The Mott transition is one of the fundamental issues in condensed matter physics,especially in the system with antiferromagnetic long-range ***,such a transition is rare in quantum spin liquid(QSL)systems without long-range *** we report the experimental pressure-induced insulator to metal transition followed by the emergence of superconductivity in the QSL candidate NaYbSe2 with a triangular lattice of 4 f Yb^3+*** analysis of transport properties in metallic state shows an evolution from non-Fermi liquid to Fermi liquid behavior when approaching the vicinity of *** irreversible structure phase transition occurs around 11 GPa,which is revealed by the x-ray *** results shed light on the Mott transition in the QSL systems.

关键词： diffraction. transition Fermi

Anti-VEGF reduces inflammatory features in macular edema secondary to retinal vein occlusion

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International Journal of Ophthalmology(English edition) 2022年第8期15卷 1296-1304页

作者： Hai-Feng Qin fan-Jun Shi Chao-Yang Zhang Da-Wei Luo Shi-Yue Qin Jing Wu Hai Xie Jing-Ting Zhang Qing-Hua Qiu Kun Liu Guo-Tong Xu Guo-Xu Xu Jing-fa Zhang Department of Ophthalmology Changhai HospitalShanghai 200433China Department of Ophthalmology the Second Affiliated Hospital of Soochow UniversitySuzhou 215004Jiangsu ProvinceChina Department of Ophthalmology Shanghai General Hospital(Shanghai First People’s Hospital)Shanghai Jiao Tong UniversityShanghai 200080China National Clinical Research Center for Eye Diseases Shanghai Key Laboratory of Ocular Fundus DiseasesShanghai Engineering Center for Visual Science and PhotomedicineShanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesShanghai 200080China Tongji Eye Institute Department of Regenerative Medicineand Department of PharmacologyTongji University School of MedicineShanghai 200092China Department of Ophthalmology Shigatse People’s HospitalShigatse City 857000Tibet Autonomous RegionChina

AIM: To investigate the anti-inflammatory effect of intravitreal injection of anti-vascular endothelial growth factor(anti-VEGF) in patients with macular edema secondary to retinal vein occlusion(RVO-ME).METHODS: Twenty-eight eyes from twenty-eight treatment-na?ve patients(14 males and 14 females) with RVO-ME were included in this retrospective *** retinal vein occlusion(RVO) was comprised of both central retinal vein occlusion(CRVO,n=14) and branch retinal vein occlusion(BRVO,n=14).Intravitreal injection of anti-VEGF reagents were administered monthly for three consecutive months,in which 18 patients were injected with ranibizumab and 10 patients were injected with *** eyes were imaged with optical coherence tomography angiography(OCTA) at baseline and 1wk after monthly intravitreal anti-VEGF *** visual acuity(VA),central macular thickness(CMT),the number of hyperreflective foci(HRF) recognized as an inflammatory sign in OCT images,and non-perfusion area(NPA),were compared before and after anti-VEGF ***: The mean interval between baseline and follow-up was 29.4±0.79(range,27-48)*** with the baseline,the VA improved(log MAR 1.5±0.1 vs 0.8±0.1,P<0.05) and CMT decreased(460±34.0 μm vs 268.8±12.0 μm,P<0.05),significantly,after antiVEGF *** number of HRF was decreased significantly(76.5±4.8 vs 47.8±4.3,P<0.05) after antiVEGF ***: Anti-VEGF therapy is effective in treating *** mechanisms for the decreased HRF and the reduction of NPA by anti-VEGF therapy merits further exploration.

关键词： macular edema retinal vein occlusion anti-VEGF hyperreflective foci non-perfusion area

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印度的科学技术与工业开发

科学学译丛 1990年第1期 33-42页

作者： Long.,fa 林浩

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轻骨料混凝土单轴力学性能统一计算方法

中南大学学报（自然科学版） 2010年第5期41卷 1973-1979页

作者：丁发兴应小勇余志武中南大学土木建筑学院湖南长沙410075

针对国内对普通轻骨料混凝土和高强轻骨料混凝土的单轴力学性能指标采用分区描述,导致不同计算公式在分区边界处所得的计算结果误差较大,且不便应用于轻骨料混凝土结构计算与分析等问题,通过对国内大量的普通轻骨料混凝土和高强轻骨料... 详细信息

针对国内对普通轻骨料混凝土和高强轻骨料混凝土的单轴力学性能指标采用分区描述,导致不同计算公式在分区边界处所得的计算结果误差较大,且不便应用于轻骨料混凝土结构计算与分析等问题,通过对国内大量的普通轻骨料混凝土和高强轻骨料混凝土单轴受力性能试验资料进行统一分析,发现轻骨料混凝土强度等级在LC10～LC80时其各力学性能指标均具有连续变化规律。基于统计分析方法,对不同强度等级轻骨料混凝土的各种力学指标进行统一分析,提出适用于各种强度等级轻骨料混凝土的尺寸换算系数、轴心抗压强度、轴心抗拉强度、劈拉强度、弹性模量、轴心受压峰值应变和轴心受拉峰值应变等统一计算公式,建立不同强度等级轻骨料混凝土轴心受压、受拉应力-应变全曲线方程,计算结果与实测结果较吻合。

关键词：轻骨料混凝土力学指标应力-应变全曲线单轴

紫色土对邻苯二甲酸二甲酯的淋溶吸持特征及影响因素

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环境科学 2016年第2期37卷 726-733页

作者：王强宋娇艳曾微王法西南大学资源环境学院三峡库区生态环境教育部重点实验室重庆400716 重庆市农业资源与环境研究重点实验室重庆400716 西南计算机有限责任公司重庆400060

以三峡库区典型土壤——紫色土为供试土壤,采用土柱淋溶试验方法,研究了紫色土对受邻苯二甲酸二甲酯（DMP）污染水体中DMP的吸持作用机制与影响因素.结果表明,抛物线方程是描述紫色土对受污染水体中DMP的吸持动力学的最佳方程;淋溶液DM... 详细信息

以三峡库区典型土壤——紫色土为供试土壤,采用土柱淋溶试验方法,研究了紫色土对受邻苯二甲酸二甲酯（DMP）污染水体中DMP的吸持作用机制与影响因素.结果表明,抛物线方程是描述紫色土对受污染水体中DMP的吸持动力学的最佳方程;淋溶液DMP浓度对紫色土吸持DMP的影响显著,紫色土对DMP吸持量随着淋溶液DMP浓度增加呈线性增长;淋溶液离子强度和淋溶液p H对紫色土吸持DMP的影响显著,总体上离子强度的增加对DMP的吸持起到抑制作用,p H 5.0-7.0条件下的吸持量高于其他p H下的吸持量.在紫色土中添加有机质增加了紫色土对DMP的吸持;但当外源有机质含量过高,超过30 g·kg-1时,吸持量反而低于其他添加量的吸持量.在紫色土中添加表面活性剂SDBS增加了紫色土对DMP的吸持,当SDBS添加量为50 mg·kg-1时,紫色土对DMP的吸持量最大,而随着添加量的增加,对DMP的吸持量虽然仍高于对照组,但吸持量逐渐降低,当SDBS添加量为800 mg·kg-1,紫色土对DMP的吸持量与对照接近.持续淋溶时间影响土柱中DMP的垂直分布,当淋溶时间较短,上层土壤吸持DMP较多,随着淋溶时间的延长,土柱上下层DMP含量逐渐接近.

关键词：紫色土邻苯二甲酸二甲酯(DMP) 淋溶吸持影响因子

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Raman跃迁中原子的熵压缩

量子电子学报 2005年第6期22卷 894-899页

作者：靳丽娟方卯发湖南师范大学物理与信息科学学院湖南长沙410081

运用量子信息熵理论研究了Raman跃迁中原子的熵压缩特性。讨论了系统初态参数对原子信息熵压缩的影响。结果表明:信息熵压缩的分量数、压缩方向、压缩深度可以由原子的分布角、双模相干场相对位相和平均光子数的选取来控制。结果证明... 详细信息

运用量子信息熵理论研究了Raman跃迁中原子的熵压缩特性。讨论了系统初态参数对原子信息熵压缩的影响。结果表明:信息熵压缩的分量数、压缩方向、压缩深度可以由原子的分布角、双模相干场相对位相和平均光子数的选取来控制。结果证明了信息熵能实现对原子压缩效应的高灵敏量度。

关键词：量子光学 Raman跃迁约化密度矩阵原子熵压缩