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Simulating the development of resilient human settlement in Changsha

Journal of Geographical Sciences 2022年第8期32卷 1513-1529页

作者： tang lisha LONG Hualou School of Business Hunan First Normal UniversityChangsha 410205China School of Public Administration Guangxi UniversityNanning 530004China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Using the system dynamics simulation software Vensim PLE, we built a model to simulate the development of resilient human settlement in Changsha. This model includes five subsystems: living, economy, society, ecology and engineering. The model simulates various scenarios, based on different parameter settings to predict the trend of human settlement from 2019–2040 in Changsha. It puts forward four development programs under different simulation scenarios. The results show that the current system of human settling lacks self-regulation and feedback, where simple increases in the economy and urbanization cannot drive the internal system to progress positively. In contrast, the resilient human settlement program is more reasonable and scientific, up to the year 2040, the production, living and ecological environment of residents will be markedly improved in terms of per capita disposable income, per capita floor space and medical insurance coverage;these will increase by 98.9%, 39.7%, and 170.7%, respectively. This system of developing resilient human settlement provides feedback according to the internal relation loops and thus drives itself to adjust and recover, achieving harmonious and sustainable development. In the forthcoming development, we should take the initiative to optimize economic development and upgrade industrial structures, establish emergency plans and response mechanisms to enhance human quality of life.

关键词： human settlement resilience system dynamics simulation sustainable development

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In-situ synthesis of high thermal stability and salt resistance carbon dots for injection pressure reduction and enhanced oil recovery

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Nano Research 2023年第10期16卷 12058-12065页

作者： Yining Wu lisha tang Dayu Liu Demin Kong Liu Kai Mengjiao Cao Qingshan Zhao School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China

Carbon dots(CDs)show great potential as a new type of oil-displacing agent for unconventional oil and gas ***,the instability and easy aggregation epitomize the challenges that accompany the application of CDs in high temperature and high salinity(HT/HS)*** this research,novel benzene sulfonate-modified carbon dots(BS-CDs)with remarkable thermal stability and salt resistance were fabricated through an in-situ electrochemical exfoliation *** simulation verifies that the introduction of benzene sulfonate groups substantially strengthens the electrostatic repulsion between BS-CDs,leading to outstanding dispersibility and stability even at a temperature of 100℃ and salinity of 14×10^(4) mg/*** flooding tests show that 0.05 wt.%BS-CDs nanofluid can significantly reduce the water injection pressure by 50.00%and enhanced oil recovery(EOR)to 68.39%under HT/HS *** to the atomic force microscopy(AFM)scanning results,the adhesion force between the core(after BS-CDs treatment)and oil decreased by 11.94 times,indicating that the hydrophilicity of the core surface was *** addition,the distribution of the adhesion force curve is more concentrated,which means that the micro-scale wettability of the core changes from oil-wet to more homogeneous *** study provides a feasible way for the development and application of good thermal stability and salt resistance CDs in unconventional reservoir development.

关键词： carbon dots in-situ modification thermal stability and salt resistance injection pressure reduction enhanced oil recovery

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Literature and patent analysis of the cloning and identification of human functional genes in China

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Science China(Life Sciences) 2012年第3期55卷 268-282页

作者： XIA Yan tang lisha YAO Lei WAN Bo YANG XianMei YU Long State Key Laboratory of Genetic Engineering School of Life SciencesFudan UniversityShanghai 200433China Institutes of Biomedical Sciences Fudan UniversityShanghai 200032China

The Human Genome Project was launched at the end of the *** then,the cloning and identification of functional genes has been a major focus of research across the *** China too,the potentially profound impact of such studies on the life sciences and on human health was realized,and relevant studies were initiated in the *** advance China's involvement in the Human Genome Project,in the mid-1990s,Committee of Experts in Biology from National High Technology Research and Development Program of China(863 Program) proposed the "two 1%" *** goal envisaged China contributing 1% of the total sequencing work,and cloning and identifying 1% of the total human functional *** the past 20 years,tremendous achievement has been accomplished by Chinese *** is well known that scientists in China finished the 1% of sequencing work of the Human Genome Project,whereas,there is no comprehensive report about "whether China had finished cloning and identifying 1% of human functional genes".In the present study,the GenBank database at the National Center of Biotechnology Information,the PubMed search tool,and the patent database of the State Intellectual Property Office,China,were used to retrieve entries based on two screening standards:(i) Were the newly cloned and identified genes first reported by Chinese scientists?(ii) Were the Chinese scientists awarded the gene sequence patent? Entries were retrieved from the databases up to the cut-off date of 30 June 2011 and the obtained data were analyzed *** results showed that 589 new human functional genes were first reported by Chinese scientists and 159 gene sequences were patented(http:***/introduction/database/chinagene/***).This study systematically summarizes China's contributions to human functional genomics research and answers the question "has China finished cloning and identifying 1% of human functional genes?" in the affirmative.

关键词： gene cloning gene identification human functional gene

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Facile and controllable synthesis of amino-modified carbon dots for efficient oil displacement

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Nano Research 2023年第5期16卷 6048-6056页

作者： Yining Wu lisha tang Mengjiao Cao Li Li Kai Liu Demin Kong Qingshan Zhao Xu Jin He Liu Caili Dai Shandong Key Laboratory of Oilfeld Chemistry School of Petroleum EngineeringChina University of Petroleum(East China)Qingdao 266580China Oil&Gas Technology Research Institute of Changqing Oilfield Company Xi’an 710000China State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China

Zero-dimensional(0D)carbon dots exhibit excellent potential as a new oil-displacing agent for unconventional reservoir ***,the difficulty in size/surface properties control and unclear mechanism hinder their further *** this study,amino-modified carbon dots(am-CDs)for oil displacement were facilely synthesized through the rapid polymerization of D-glucose(D-Glc)and 3-aminopropyltriethoxysilane(APTES).The size of am-CDs could be precisely controlled by the reaction condition and quenching achieved by adjusting the pH value to *** surface amine groups endow am-CDs with excellent hydrophilicity and dispersion *** 0.30 wt.%nanofluid based on am-CDs with an average size of 2.6±0.040 nm showed remarkable oil recovery efficiency(54.09%)without the addition of *** oil recovery efficiency of am-CDs is much higher than those of water flooding(30.25%),nano-SiO_(2) flooding(36.45%),and amino-free carbon dots(af-CDs)flooding(37.80%).Experimental and theoretical results reveal that am-CDs can be favorably adsorbed on the core surface to modulate the micro-scale wettability,changing the surface from oil-wet to relatively uniform ***,am-CDs can effectively reduce the adhesion force between alkanes and sandstone surfaces,contributing to oil droplets peeling off and oil *** study provides a new strategy for developing efficient carbon dots-based nanofluids for enhanced oil recovery.

关键词： carbon dots amino-modification polymerization enhanced oil recovery adhesion force

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A PO-CI/MC-CDMA scheme for high modulation styles

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Frontiers of Electrical and Electronic Engineering in China 2008年第2期3卷 145-149页

作者： Yanyan ZHANG lisha tang Xiaofeng TAO Xiaoxuan ZHU Ping ZHANG Wireless Technology Innovation Institute Beijing University of Posts and TelecommunicationsBeijing 100876China School of Language Beijing University of Posts and Telecommuni-cationsBeijing 100876China

Through analyzing the theoretical spreading principle,it has been proved in this paper that the benefit of pseudo-orthogonal carrier interferometry(PO-CI)spreading code is not supported when complex signal modulation(e.g.,quadrature phase-shift keying(QPSK)and quadrature amplitude modulation(QAM))types are *** this basis,a novel and feasible structure for this problem is brought *** the structure mentioned,instead of complex modulation patterns,pulse amplitude modulation(PAM)combined with PO-CI spreading code is *** allows us to maintain the throughput increase of a multi-carrier code division multiple access(MC-CDMA)system with minimal loss in performance and no bandwidth expansion.

关键词： pseudo-orthogonal carrier interferometry pulse amplitude modulation spreading/de-spreading multi-carrier code division multiple access doubled throughput

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Healing Effect and Underlying Mechanism of Silver Nanoparticles Prepared Using Carboxymethyl Chitosan under Solar Irradiation

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Journal of Renewable Materials 2021年第6期9卷 1075-1085页

作者： Yi Long Chunling Zhang Lan Chen Tietao Di Lu Chen lisha tang Kaizhong Luo Yu Yan Pingzhen Tong Jie Xiang College of Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang550025China Second Affiliated Hospital Guizhou University of Traditional Chinese MedicineGuiyang550002China Department of Environmental Monitoring Changsha Environmental Protection CollegeChangsha410004China Guizhou Provincial Center for Disease Control and Prevention Guiyang550004China

In our previous study,silver nanoparticles were prepared using AgNO_(3) and carboxymethyl chitosan(CMCS)which is commercially available with solar *** this study,the efficacy and safety of silver nanoparticles prepared by this method were evaluated for healing wounds in rats with *** also attempted to determine the underlying mechanism and influencing factors of the silver nanomaterial preparation *** with growth factors,silver nanoparticles exhibit better healing effects for rats with *** remnant silver ions were detected in the major organs of these rats after the application of silver *** nanoparticles prepared using CMCS are less toxic than those prepared from the conventional method,promote the proliferation of skin fibroblasts,and are promising as a topical medication for infected *** obvious breakage process of the particles is observed during the growth of nanocrystalline silver in *** this study,we also attempted to determine whether this method is suitable for synthesizing silver nanoparticles using N-trimethyl chitosan chloride and sodium alginate were used in this particular *** characteristic UV-vis absorbance peak of silver nanoparticles was found only in the reaction mixture containing N-trimethyl chitosan *** study demonstrates that free radicals are the key factor in this silver nanoparticle preparation method.

关键词： Silver nanoparticle carboxymethyl chitosan low toxicity healing free radical

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乡村人居环境弹性形成的空间分异特征与机制——以洞庭湖区为例

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地理学报 2023年第6期78卷 1339-1354页

作者：汤礼莎龙花楼戈大专湖南第一师范学院商学院长沙410205 中国科学院地理科学与资源研究所北京100101 广西大学公共管理学院南宁530004 南京师范大学地理科学学院南京210023

乡村人居环境是城乡复合人居环境中不可分割的组成部分,也是乡村人地关系的综合体现。本文基于乡村人居环境弹性形成的理论框架,结合独立性权重法和回归分析构建乡村人居环境弹性形成指标体系,并进行综合测度,深入剖析人居环境弹性形成... 详细信息

乡村人居环境是城乡复合人居环境中不可分割的组成部分,也是乡村人地关系的综合体现。本文基于乡村人居环境弹性形成的理论框架,结合独立性权重法和回归分析构建乡村人居环境弹性形成指标体系,并进行综合测度,深入剖析人居环境弹性形成的空间分异特征和形成机制。结果表明:①洞庭湖区乡村人居环境弹性形成水平具有明显的空间差异,离湖区越近弹性形成值越高,离湖区越远弹性形成值越低,呈现“内高外低”的空间分异特征。②以灵活性、适应性和反应度测算结果为依据,将洞庭湖区的弹性形成水平从空间上划分为3个环带:华容—临湘环带、澧县—平江环带和石门—赫山环带。③乡村人居环境弹性形成受到外源性因素和内源性因素的综合影响,通过突变、延续、转型等,产生正负作用,从而形成或不能形成乡村人居环境弹性。结合洞庭湖区不同环带的地理区位、资源禀赋、社会经济等差异,遵循因地制宜原则,提出相应的策略,在乡村人居环境优化发展过程中,增强乡村人居环境地域系统的监测、预测和抗扰动能力,不断提升弹性,促进乡村可持续发展。

关键词：乡村人居环境弹性形成乡村可持续发展乡村振兴乡村地理学洞庭湖区

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激光辅助孵化对冻融胚胎移植的临床结局及母婴安全性的影响

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中华生殖与避孕杂志 2022年第12期42卷 1250-1258页

作者：杨宁唐淮云汤丽莎连云港市妇幼保健院生殖中心连云港222000

目的探讨在玻璃化冻融胚胎移植(frozen-thawed embryo transfer,FET)周期中,激光辅助孵化(laser-assisted hatching,LAH)对患者临床结局及母婴安全性的影响。方法采用回顾性队列研究分析连云港市妇幼保健院生殖中心自2017年1月至2020年... 详细信息

目的探讨在玻璃化冻融胚胎移植(frozen-thawed embryo transfer,FET)周期中,激光辅助孵化(laser-assisted hatching,LAH)对患者临床结局及母婴安全性的影响。方法采用回顾性队列研究分析连云港市妇幼保健院生殖中心自2017年1月至2020年1月期间玻璃化冷冻后行FET治疗的临床资料。共纳入641个FET周期,根据不同胚龄分为卵裂期移植周期和囊胚移植周期,不同胚龄周期根据复苏后是否行LAH分为LAH组和Non-LAH组(未行LAH)。采用单因素分析分别比较不同胚龄行LAH操作后患者临床妊娠结局和围产期母婴并发症的情况。采用多元logistic回归分析控制其他混杂因素,分析LAH对活产率的影响。主要观察指标为活产率。次要观察指标为临床妊娠率、种植率、多胎率、流产率、异位妊娠率、早产率、围产期母体相关并发症、新生儿结局。结果在卵裂期胚胎移植患者中,LAH组的临床结局与Non-LAH组相比差异均无统计学意义(均P>0.05);囊胚移植患者中,LAH组临床妊娠率[71.2%(109/153)]、种植率[61.2%(126/206)]、活产率[66.7%(102/153)]均高于Non-LAH组[56.2%(59/105),P=0.013;46.4%(65/140),P=0.007;48.6%(51/105),P=0.004],差异均有统计学意义,而在多胎率、流产率、异位妊娠率、早产率等方面两组相比,差异均无统计学意义(均P>0.05)。无论是卵裂期移植或是囊胚移植患者行LAH后,在围产期母体相关并发症、新生儿结局等方面与Non-LAH组差异均无统计学意义(均P>0.05)。经多元logistic回归分析校正混杂因素后,结果显示LAH对卵裂期胚胎FET患者的活产率无影响,但可提高囊胚FET患者的活产率(OR=2.656,95%CI=1.505~4.689,P=0.001)。结论在复苏移植周期中,LAH可以改善囊胚移植患者的临床结局,但无法改善卵裂期移植患者的临床结局;LAH对围产期母婴安全暂未显示有不良影响。

关键词：囊胚冻融胚胎移植激光辅助孵化卵裂期胚胎临床结局母婴安全

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长沙市A级景区空间分布特征

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经济地理 2018年第6期38卷 218-224页

作者：汤礼莎贺清云朱翔湖南第一师范学院商学院中国湖南长沙410025 湖南师范大学资源与环境科学学院中国湖南长沙410081

采用GIS空间分析方法,分别分析了长沙市A级景区行政分布特征以及与长沙市DEM、NDVI、河流、GDP、交通五个因素的分布关系,结果表明:(1)长沙市辖区因其行政地位、环境等优势明显,A级景区分布数量较多,景区级别也较高。(2)长沙市人文类A... 详细信息

采用GIS空间分析方法,分别分析了长沙市A级景区行政分布特征以及与长沙市DEM、NDVI、河流、GDP、交通五个因素的分布关系,结果表明:(1)长沙市辖区因其行政地位、环境等优势明显,A级景区分布数量较多,景区级别也较高。(2)长沙市人文类A级景区多分布在海拔高度200 m以下、河流水系附近,对植被覆盖度要求不高;自然类A级景区更倾向于海拔200~500 m的低山丘陵,高植被覆盖度的地区,河流对其有一定影响。(3)景区级别3A以上的景区多分布在经济发达、交通便利的地区,且人文类A级景区对交通条件有更高的要求。

关键词：旅游 A级景区二分法 GIS空间分析长沙

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宗教禁忌的起源与基本特征

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重庆科技学院学报（社会科学版） 2010年第9期 44-45页

作者：唐丽沙西南大学政治与公共管理学院

宗教禁忌是一种常见现象,本质上是人们信仰和崇拜神秘的异己力量和神圣的宗教对象的一种宗教行为。探讨了宗教禁忌的内涵、起源和基本特征。

关键词：宗教禁忌起源特征

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