检索结果-南通市图书馆

Potential evaluation and implementation strategy for pocket park construction in high-density urban areas: A case study in Dalian, China

引用

Frontiers of Architectural Research 2024年第2期13卷 319-334页

作者： Jing Dong ruonan guo Fei guo Jun Cai School of Architecture and Fine Art Dalian University of TechnologyDalian 116024China

As an important element of urban renewal in highly urbanized areas, pocket parks with small size, flexible layout and daily accessibility are becoming a major component of green infrastructure and the mainstay of outdoor recreation space expansion in high-density urban centers. Nevertheless, the absence of a comprehensive framework for evaluating the potential of pocket park construction (PPC), one that integrates diverse influencing factors on a macro scale, has resulted in the random installation of such spaces, often failing to optimize the utilization of urban land. Addressing this critical lacuna, we propose an approach to evaluate PPC potential from a city-scale perspective, which is used to support the determination of which land units should be prioritized for PPC. A complete and feasible workflow was also established to identify potential land units, construct an index system for PPC combining demand and supply levels, quantitatively calculate indices based on remote sensing (RS) and geographic information system (GIS), accurately evaluate PPC potential using an entropy-weighted TOPSIS model, and develop targeted renewal strategies. A case study in Dalian, China, demonstrated the applicability and implications of the workflow. The results showed that it is flexible and easy to adapt to different local contexts, allowing evaluators to introduce parameters considering the availability of local data, and will help decision makers to build pocket parks in the most effective plots, providing a strong reference for high-quality development in other high-density urban centers facing the contradiction between ecological construction and land scarcity.

关键词： Pocket park Potential evaluation Urban renewal High-density urban areas

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Degradation of neonicotinoids with different molecular structures in heterogeneous peroxymonosulfate activation system through different oxidation pathways

引用

Chinese Chemical Letters 2024年第9期35卷 331-339页

作者： ruonan guo Heng Zhang Changsheng guo Ningqing Lv Beidou Xi Jian Xu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China School of Environment Tsinghua UniversityBeijing 100084China

The elimination of neonicotinoids(NEOs)from water has been a research priority due to their threats to human health and *** this study,we established the heterogeneous peroxymonosulfate(PMS)activation system using manganese catalyst(Mn NC)and cobalt catalyst(Co NC)to trigger the nonradical oxidation and synergistic oxidation pathway,respectively to remove *** results showed that the nonradical oxidation system exhibited superior NEOs degradation *** composition of organic pollutants in wastewater significantly impacted subsequent degradation *** charge distribution and reaction sites of various NEOs were analyzed using density functional theory(DFT)calculations,and it demonstrated the electron distribution and activity of NEOs were significantly influenced by the type and number of *** group(–NO_(2))and cyanide group(–C≡N)were identified as strong electron-withdrawing groups and prone to be attacked by negatively charged *** transformation of NEOs was analyzed,and result showed that the C and N sites adjacent to the nitro group and cyanide group were more susceptible to oxidation attacks.S and N atoms,which possess strong electronegativity and high electron cloud density,were identified as key active sites in the degradation *** outcomes of this study provide valuable guidance for the oriented regulation of oxidation pathways towards efficient removal of NEOs in water.

关键词： Fenton-like processes Molecular structure Neonicotinoids Nonradical oxidation Degradation pathway

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Finer-scale urban health risk assessment based on the interaction perspective of thermal radiation,human,activity,and space

引用

Frontiers of Architectural Research 2024年第3期13卷 682-697页

作者： ruonan guo Fei guo Jing Dong Zixuan Wang Ruwei Zheng Hongchi Zhang School of Architecture and Fine Art Dalian University of TechnologyDalian 116024China Weifang Natural Resources and Planning Bureau High Tech Branch Weifang 261041China

Urban heat stress profoundly affects the health of ***,current research primarily focuses on quantifying the risk of urban heat based on LST,Ta,etc.,overlooking the crucial and intimate influence of continuous intense solar radiation on human thermal comfort and ***,there is a lack of smaller units to support more precise *** study utilized the radiant heat stress intensity(RHSI)metric concentrating on the intensity and duration of thermal radiation,to develop a thermal-radiation induced health risk(TIHR)assessment *** technologies such as the SOLWEIG model,Python,BERT,and GIS enables precise calculations of 12 spatial indices,including RHSI and Weibo *** facilitates a more accurate assessment of health risks at the smallest urban units(blocks)and directly guides *** application of this workflow in the case of Suoyuwan,Dalian,China,confirms its value,as it can be used to determine which blocks should be prioritized for specific aspects of risk prevention and *** results show that some blocks exhibited differences in TIHR even within close proximity,with disaster-causing factors varying according to *** study proposes a novel assessment framework based on the interactive perspective of thermal radiation-human-activity-space.

关键词： Health risk assessment Thermal radiation Finer-scale Block Planning Human-centered

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

单原子催化剂在过硫酸盐氧化体系中的研究进展

引用

环境化学 2024年第3期43卷 834-845页

作者：郭若男吕宁磬中国环境科学研究院北京100012

近年来,大量研究表明过硫酸盐高级氧化技术(PS-AOPs)是处理污水中难生物降解有机污染物的有效策略.寻求高活性、高稳定性、低成本的催化剂是实现过硫酸盐高效活化降解新污染物的关键.相比于传统金属纳米颗粒催化剂,单原子催化剂(SAC)在P... 详细信息

近年来,大量研究表明过硫酸盐高级氧化技术(PS-AOPs)是处理污水中难生物降解有机污染物的有效策略.寻求高活性、高稳定性、低成本的催化剂是实现过硫酸盐高效活化降解新污染物的关键.相比于传统金属纳米颗粒催化剂,单原子催化剂(SAC)在PS-AOPs中表现出超快的反应速率、较低的金属负载量以及强金属与载体相互作用等优点.更重要的是,SAC具有原子级分布的活性中心,以便于从原子甚至电子层次下研究非均相催化体系中的构效关系和多种反应机制.然而,目前SAC在PS-AOPs中的研究尚处于起步阶段.本文重点综述了SAC活化过硫酸盐产生氧化活性物质的驱动机制,对结构调控与催化性能的相关性进行了系统总结,深入了解结构-性能关系,指出了精确调整催化剂活性位点的策略,并对相关研究领域未来的机遇和挑战提出了展望.

关键词：过硫酸盐高级氧化技术单原子催化剂反应机理

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于支持向量机的陶瓷原料成分识别

引用

科学技术创新 2024年第2期 32-35页

作者：郭若楠西安石油大学陕西西安

针对科学合理的分类陶瓷原料问题,提出了基于支持向量机的陶瓷原料成分识别。首先对SVM理论进行了详细介绍,并构建SVM线性核分类器和SVM高斯核分类器;然后在此基础上开展陶瓷原料分类实验,对陶瓷原料分类实验结果进行对比总结。实验表明... 详细信息

针对科学合理的分类陶瓷原料问题,提出了基于支持向量机的陶瓷原料成分识别。首先对SVM理论进行了详细介绍,并构建SVM线性核分类器和SVM高斯核分类器;然后在此基础上开展陶瓷原料分类实验,对陶瓷原料分类实验结果进行对比总结。实验表明,线性核支持向量机预测准确率为96.7%,有更强的可行性和很好的鲁棒性。

关键词： SVM 陶瓷原料成分识别

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Efficient degradation of sulfacetamide by CoFe PBAs and PBA@PVDF composite membrane activating peroxymonosulfate

引用

Chinese Chemical Letters 2023年第5期34卷 357-364页

作者： ruonan guo Ying Chen Ying Yang Jiangwei Shang Xiuwen Cheng Key Laboratory for Environmental Pollution Prediction and Control Gansu ProvinceCollege of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Key Laboratory of Pollutant Chemistry and Environmental Treatment College of Chemistry and Environmental ScienceYili Normal UniversityYining 835000China

More and more antibiotics that are difficult to biodegrade have been detected in water environments threatening ecosystems and human ***,it is urgent to develop efficient water treatment methods to degrade *** this work,Co-Fe Prussian blue analogues(PBAs)with different molar ratios were synthesized for peroxymonosulfate(PMS)activation to degrade sulfacetamide(SAM,10 mg/L).By increasing Co molar ratio,the PMS activation capability and electrochemical properties of PBAs were *** to its excellent reactivity(degradation efficiency of 84.2%and mineralization efficiency of 52.79%),cost benefit(electrical energy per order,0.01019 k Wh/L)and lower metal leaching([Co]=0.259 mg/L,[Fe]=0.128 mg/L),PBA-1,the as-prepared catalyst with a molar ratio of cobalt to iron of 1:1,was selected for further *** radical scavenging experiments and an electron paramagnetic resonance(EPR)trapping experiments were performed and revealed that PBA-1 addition was required to produced·OH and SO_(4)^(·-)from PMS ***,we proposed a PMS activation mechanism and SAM decomposition pathways for PBA-1/PMS reaction ***,a PBA-1@polyvinylidene fluoride(PVDF)catalytic membrane was further prepared to expand the application potential of PBA *** PBA-1@PVDF catalytic membrane was highly effective and exhibited a great reusability;thus,it could be considered for applications in actual water treatment processes.

关键词： Prussian blue analogues Peroxymonosulfate Sulfacetamide Composite membrane

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Catalytic degradation of lomefloxacin by photo-assisted persulfate activation on natural hematite:Performance and mechanism

引用

Chinese Chemical Letters 2022年第8期33卷 3809-3817页

作者： ruonan guo Ying Chen Bingrui Liu Ying Han Jianfeng Gou Xiuwen Cheng Key Laboratory for Environmental Pollution Prediction and Control Gansu ProvinceCollege of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China

The natural hematite(α-Fe_(2)O_(3)) is stable and abundant on the earth,as well as with strange electronic band structure and good visible light absorption ***,the composition and catalytic performance of natural hematite should be *** this study,the photo-assisted hematite nanoparticles activated persulfate(H-NPs/PS/vis)system was *** detected,H-NPs had an irregular agglomerate structure with abundant internal pore and were mainly composed of Fe_(2)O_(3),SiO_(2) and TiO_(2).The system was applied to removing various antibiotic(i.e.,lomefloxacin,ciprofloxacin and enrofloxacin with initial concentration of 10 mg/L),achieving high degradation performance of 82.0%,81.2%and 82.2%after120,330 and 240 min,***,H-NPs had excellent reusability with low metal leaching(Ti leaching percentage lower than 0.01%,Fe dissolution percentage was 0.48%)and stable *** last,a possible reaction mechanism of H-NPs/PS/vis system was proposed that lomefloxacin(LOM)was efficiently removed via the synergistic process of components contained in H-NPs with PS and light,involving the generation of·O_(2)^(-),·OH and SO_(4)^(·-).Above all,this paper provided a novel application scheme of natural hematite through in-depth and comprehensive experimental exploration.

关键词： Natural hematite Persulfate Photocatalytic Antibiotic degradation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Construction of high-efficient visible photoelectrocatalytic system for carbamazepine degradation:Kinetics,degradation pathway and mechanism

引用

Chinese Chemical Letters 2020年第10期31卷 2661-2667页

作者： ruonan guo Li-Chao Nengzi Ying Chen Qingqing Song Jianfeng Gou Xiuwen Cheng Key Laboratory of Western China's Environmental Systems(Ministry of Education)and Key Laboratory for Environmental Pollution Prediction and Control Gansu ProvinceCollege of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Academy of Economics and Environmental Sciences Xichang UniversityXichang 615000China

This study aimed to construct a photoelectrocatalytic(PEC)reaction system based on the self-made reduced TiO_(2) NTAs(r-TNAs)photoanode and activated carbon/Polytetrafluoroethylene(AC/PTFE)*** would be observed clearly that the degradation rate constant of carbamazepine(CBZ)over r-TNAs(photoanode)-AC/PTFE(cathode)PEC system(0.04961 min^(-1))was even higher than that of r-TNAs(photoanode)-Pt(cathode)PEC system(0.04602 min^(-1))with the assistance of visible light irradiation and+0.4 V external ***,in order to obtain optimized conditions,the influence of key parameters such as pH value,electric current density and electrolyte concentration were *** impo rtantly,photoelectrochemical(PECH)properties,reactive oxide species *** formation rate and CBZ degradation pathway were *** results illustrated that the excellent PEC degradation performance depended on the excellent photocatalytic property of r-TNAs photoanode and electron transfer prope rty of photoelectrodes in r-TNAs(photoanode)-AC/PTFE(cathode)PEC *** re,the study demonstrated that the r-TNAs(photoanode)-AC/PTFE(cathode)PEC system could be expected to replace metal-catalyzed cathodes depending on its excellent PEC performance activity and low cost as well as the reaction system possessed objective and practical application prospect.

关键词： Photoelectrocatalytic system r-TNAs photoanode AC/PTFE cathode Carbamazepine degradation pathway

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Novel synthesis of Z-schemeα-Bi2O_(3)/g-C_(3)N_(4) composite photocatalyst and its enhanced visible light photocatalytic performance:Influence of calcination temperature

引用

Chinese Chemical Letters 2020年第10期31卷 2705-2711页

作者： Bo Li Li-Chao Nengzi ruonan guo Yuqi Cui Youxian Zhang Xiuwen Cheng Key Laboratory of Western China's Environmental Systems(Ministry of Education)and Key Laboratory for Environmental Pollution Prediction and Control Gansu ProvinceCollege of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Academy of Economics and Environmental Sciences Xichang UniversityXichang 615000China

In this study,α-Bi2O_(3)/g-C_(3)N_(4) nanocomposite with direct Z-scheme was successfully prepared through calcination of BiOCOOH/g-C_(3)N_(4) precursor at different ***,the effect of calcination temperature on the physicochemical properties ofα-Bi2O_(3)/g-C_(3)N_(4) was *** results confirmed that calcination tempe rature greatly influences structural,morphology,surface states,photoelectrochemical property and photocatalytic(PC)perfo rmance ofα-Bi2O_(3)/g-C_(3)N_(4) ***,theα-Bi2O_(3)/gC_(3)N_(4) composite was applied as photocatalyst to degrade amido black 10 B dye under visible light *** was found that the composite synthesized at 400℃exhibited the highest PC performance due to the intense visible light absorbance and high separation efficiency of electron and hole ***,the possible PC mechanism was proposed that the photo-generated charge carrier migration inα-Bi2O_(3)/g-C_(3)N_(4) photocatalyst followed a Z-scheme ***,the stability test also manifest that theα-Bi2O_(3)/g-C_(3)N_(4) composite photocatalyst has good stability and reusability,which was a promising candidate for wastewater treatment.

关键词： α-Bi_(2)O_(3)/g-C_(3)N_(4) Photocatalysis Calcination temperature Z-scheme

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

山羊源伪结核棒状杆菌的分离鉴定及其毒力评价

引用

黑龙江畜牧兽医 2024年第10期 65-70,114,115页

作者：崔宁党光辉鹿萍郭若男姜艳艳陈凡若刘思国新疆农业大学动物医学学院乌鲁木齐830052 中国农业科学院哈尔滨兽医研究所动物疫病防控全国重点实验室哈尔滨150069

为了确定齐齐哈尔市某山羊养殖场疑似患有伪结核病病羊的病原及其毒力,试验从不同病羊的皮下脓包中采集脓汁病料3份,通过细菌的分离与纯化、生化鉴定、16S rDNA基因的PCR扩增与序列分析确定病原,并通过致病性试验对分离株的毒力进行评... 详细信息

为了确定齐齐哈尔市某山羊养殖场疑似患有伪结核病病羊的病原及其毒力,试验从不同病羊的皮下脓包中采集脓汁病料3份,通过细菌的分离与纯化、生化鉴定、16S rDNA基因的PCR扩增与序列分析确定病原,并通过致病性试验对分离株的毒力进行评价。结果表明:共得到3株分离株,其菌落形态和生化特性菌与伪结核棒状杆菌相符,分别命名为CP045、CP073、CP969;分离株CP045、CP073、CP969的16S rDNA基因序列与伪结核棒状杆菌参考株的相似性分别高达98.8%、100%、99.8%,进一步确定3株分离株均为伪结核棒状杆菌。注射分离株CP073的3只小鼠中有2只于注射后36~48 h陆续死亡,1只精神极度沉郁、食欲不振;注射分离株CP045、CP969的3只小鼠于注射后5 d内均未见死亡,但状态不佳。注射分离株CP045、CP073、CP969的小鼠肝脏均不同程度出血、肿大,脾脏轻微出血;注射分离株CP073的小鼠皮肤表面有黄色脓汁渗出,皮下有黄白色玉米粒大小的结核样脓肿;注射分离株CP045和CP969的小鼠皮下未见明显脓肿。说明该山羊养殖场疑似患有伪结核病的病羊感染了伪结核棒状杆菌,分离到的3株伪结核棒状杆菌毒力不同,其中分离株CP073可引起小鼠死亡,毒力较分离株CP045、CP969强。

关键词：伪结核棒状杆菌伪结核病分离鉴定 16S rDNA 致病性试验生化鉴定

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：