检索结果-南通市图书馆

Global Research Progress on Municipal Waste and Future Prospect Based on the Cross-national Comparisons

Chinese Geographical science 2024年第2期34卷 250-264页

作者： ZHANG Yuxin LIU Xiaoqian YAN Xiaoxia MA Sike MAO Weiyun College of Applied Arts and Science of Beijing Union University Beijing 100191China

Due to the acceleration of urbanization,the municipal waste(MW)problem has transformed into a global challenge for urb-an sustainability.To elucidate historical trends,current focal points,and future directions in MW research,we conducted a bibliometric analysis and employed knowledge graph visualization to scrutinize a total of 34212 articles,which were published between 1991 and 2021 in the Web of science(WoS)core database.The results indicated that current major research themes encompass waste classifica-tion and recycling,waste management and public behavior,waste disposal methods and technologies,as well as environmental impact and evaluation.There has been a shift in the research focus from the environmental impacts of waste incineration to sustainable manage-ment related issues.A comparison of research from six typical countries revealed the differences in research priorities and techniques advantages.Scholars from the USA and Britain initiated MW research earlier than other countries and investigated management issues in depth,such as public behavior and willingness to pay.Meanwhile,Japanese,German,and Swedish scholars conducted extensive studies on advanced waste treatment technologies,such as disposal and recycling,risk assessment,and waste-to-energy techniques.Chinese scholars placed particular emphasis on end-of-pipe treatments and their associated environmental impacts.Hotspots and poten-tial future frontiers were identified by burst detection analysis.Keywords with high value of burst index(BI)worldwide are food waste and circular economy.Chinese scholars have put great efforts on waste environmental impact and its recycling technologies,while we’re expecting to further investigating vulnerable population.Furthermore,this study contributes to bridging the regional gap of scientific research among different countries and fostering international collaboration.

关键词： bibliometrics municipal waste(MW) CiteSpace hotspot prediction burst index(BI) sustainability cross-national comparison Web of science(WoS)

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

EB XML Modeler and SMART XML Storage Theory

引用

电工技术学报 2014年第S1期29卷 149-154页

作者： Qu Xiao Cai Weijian Lü Shuqiang Zhejiang university of science & Technology college of applied arts and science beijing union university

Current electronic business activities involve a vast number of trading partners and different electronic documents.Usually different enterprises use different document formats.This is the well-understood problem of the lack of information interoperability between applications in the e-business arena.It is required to construct an enterprise information model to harmonize different system data structures into a unified data structure.The purpose of this paper is to develop an E-Business information modeler,which will be a good tool to exchange the information between different business enterprises.This is a new approach to the well-understood problem of the lack of information interoperability between applications in the e-business arena.It will be a more flexible and interoperable way of standardizing Business Semantics.During the transformation,SMART theory is widely used in our system.SMART is meta-model to formally specify information structures in object orientation.It provides an object-oriented environment to express the canonical information model with one semantic structure,that is,class.SMART consists of a collection of views:there is a core view which we called canonical view,and also there are many different kinds of views around the core view.We can transform the core view to the around view as we need.

关键词： EB-XML SMART theory inter-operation graph tree XSD WBS core data structure software development documents project schedule

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

Identifying the influence of urbanization on soil organic matter content and p H from soil magnetic characteristics

引用

Journal of Arid Land 2015年第6期7卷 820-830页

作者： YANG Han XIONG Heigang CHEN Xuegang WANG Yaqi ZHANG Fang college of Resource and Environment sciences Xinjiang University college of Geographical science and Tourism Xinjiang Normal University College of Applied Arts and Science of Beijing Union University

Soil magnetic characteristics are correlated with soil p H and organic matter content. Analyzing soil magnetic characteristics, organic matter content and p H can indirectly evaluate soil pollution caused by human activities. This study analyzed the soil magnetic characteristics, organic matter content and p H in surface soil samples from different land use types in Shihezi city, a newly and rapidly developing oasis city in Xinjiang of China. The aims of this study were to explore the possible relationships among the soil magnetic parameters and thereby improve the understanding of influence of urbanization on soil properties. Eighty surface soil samples at the depth of 0–10 cm were collected from 29 July to 4 August 2013. The results showed that the magnetic minerals in surface soil were dominated by ferromagnetic minerals. Spatially, the magnetic susceptibility（χLF）, anhysteretic remanent magnetization susceptibility（χARM）, saturation isothermal remanent magnetization（SIRM） and ＂soft＂ isothermal remanent magnetization（SOFT） were found to be most dominant in the new northern urban area B（N-B）, followed by built-up areas（U）, suburban agricultural land（F）, and then the new northern urban area A（N-A）. The values of χLF, χARM, SIRM and SOFT were higher in the areas with high intensities of human activities and around the main roads. Meanwhile, the property ＂hard＂ isothermal remanent magnetization（HIRM） followed the order of U〉N-B〉F〉N-A. Built-up areas had an average p H value of 7.93, which was much higher than that in the new northern urban areas as well as in suburban agricultural land, due to the increased urban pollutant emissions. The average value of soil organic matter content in the whole study area was 34.69 g/kg, and the values in the new northern urban areas were much higher than those in the suburban agricultural land and built-up areas. For suburban agricultural land, soil organic matter content was significantly negatively correlated with χLF, and had no correlation with other magnetic parameters, sinc

关键词： environmental magnetism surface soil p H soil organic matter content

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

Preparation of Y^(3+)-doped Bi-_(2)MoO_(6) nanosheets for improved visible-light photocatalytic activity: Increased specific surface area, oxygen vacancy formation and efficient carrier separation

引用

International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1824-1834页

作者： Hong Qiu Shujing Liu Xiaohui Ma Yajie Li Yueyan Fan Wenjun Li Hualei Zhou Department of Chemistry and Chemical Engineering School of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China college of applied science and Technology Beijing Union UniversityBeijing 100012China BGRIMM MTC Technology Co. Ltd.Beijing 102680China

Although Bi_(2)Mo O_(6)(BMO) has recently received extensive attention, its visible-light photocatalytic activity remains poor due to its limited photoresponse range and low charge separation efficiency. In this work, a series of visible-light-driven Y^(3+)-doped BMO(Y-BMO) photocatalysts were synthesized via a hydrothermal method. Degradation experiments on Rhodamine B and Congo red organic pollutants revealed that the optimal degradation rates of Y-BMO were 4.3 and 5.3 times those of pure BMO, respectively. The degradation efficiency of Y-BMO did not significantly decrease after four cycle experiments. As a result of Y^(3+)doping, the crystal structure of BMO changed from a thick layer structure to a thin flower-like structure with an increased specific surface area. X-ray photoelectron spectroscopy showed the presence of highintensity peaks for the O 1s orbital at 531.01 and 530.06 eV, confirming the formation of oxygen vacancies in Y-BMO. Photoluminescence(PL) and electrochemical impedance spectroscopy measurements revealed that the PL intensity and interface resistances of composites decreased significantly, indicating reduced electron–hole pair recombination. This work provides an effective way to prepare high-efficiency Bibased photocatalysts by doping rare earth metal ions for improved photocatalytic performance.

关键词： photocatalysts dye sensitization bismuth molybdate yttrium-doped

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

Beyond Kung Fu China’s Film Industry Enhances Ties with the International Market

引用

China Today 2013年第2期62卷 28-31页

作者： LIU TONG College of Applied Arts and Science of Beijing Union University

SINCE the beginning of the Chinese policy of reform and opening-up, and especially since the 1990s, China’s film industry has seen increasingly close exchanges with the wider filmmaking world. These days more screens are showing a greater variety of films from around the world than ever before. Many Chinese filmmakers enjoy creative, collaborative

关键词：电影业国际市场中国改革开放电影制作

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

Effects of higher-order aberrations on contrast sensitivity in normal eyes of a large myopic population

引用

International Journal of Ophthalmology(English edition) 2017年第9期10卷 1407-1411页

作者： Peng-Fei Zhao Shi-Ming Li Jing Lu Hong-Min Song Jing Zhang Yue-Hua Zhou Ning-Li Wang Ophthalmic Center Beijing Tongren Hospital Capital Medical University Beijing Ophthalmology and Visual Sciences Key Lab Department of Ophthalmology Affiliated Hospital of Hebei Medical University college of applied arts and science Beijing Union University

AIM：To study the relation between higher-order aberrations（HOAs）and contrast sensitivity（CS）in normal eyes among a population of laser in situ keratomileusis（LASIK）candidates.METHODS：In 6629 eyes of 3315 LASIK candidates,CS were measured under dark environment at the spatial frequencies of 1.5,3,6,12 and 18 cycles per degree（c/d）,respectively,using an Optec 6500 visual function tester.Meanwhile,ocular HOAs were measured for a 6.0 mm pupil with a Hartmann-Shack wavefront analyzer.RESULTS：In the study,the subjects with an average spherical equivalent of-4.86±2.07 D were included.HOAs decreased from the third to the sixth order aberrations with predominant aberrations of third-order coma,trefoil and fourth-order spherical aberration.At low and moderate spatial frequencies,CS was negatively correlated with the third-order coma and trefoil aberrations,and decreased with increasing Z31,but increased with increasing Z3-3and Z5-1.At high spatial frequencies,CS decreased with increasing Z3-3and increased with increasing Z5-1.CONCLUSION：At a large pupil size of 6.0 mm,the thirdorder aberrations,but not the total aberrations,are the main factors affecting CS.Vertical coma is negatively correlated with CS.

关键词： myopia contrast sensitivity higher-orderaberrations coma spherical aberration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Magnetic Resonance Imaging of Alzheimer's Disease:from Diagnosis to Therapeutic Evaluation

引用

Chinese Journal of Integrative Medicine 2010年第3期16卷 276-282页

作者：顾雪梅姜招峰黄汉昌 beijing Military General Hospital beijing Key Laboratory of Bioactive Substances and Functional Foods Beijing Union University college of arts and science Beijing Union University

Alzheimer＇s disease（AD）is a devastating late-life dementia that produces progressive loss of memory and mental faculties in elderly people.It is important to identify the earliest evidence of AD and to monitor the development of this disease for us to make positive response to its management.Magnetic resonance imaging（MRI）is powerful to image the tissue or organ without damnification.MRI can be employed to diagnose the early AD development and monitor the key biomarker development in AD.MRI may be helpful not only in diagnosing early AD,but also in evaluating its development.This article reviews the progress of MRI on the diagnosis and detection of AD,and makes comments on its therapeutic application.

关键词： Alzheimer＇s disease diagnosis magnetic resonance imaging

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

An Assessment of Androgenic/Anti-androgenic Effects of GH Transgenic Carp by Hershberger Assay

引用

Biomedical and Environmental sciences 2011年第4期24卷 445-449页

作者： LIU YuMei ZHANG WenZhong YONG Ling ZHAO XiaoHong JIA XuDong LI Ning college of applied arts and sciences Beijing Union UniversityBeijing 100191China National Institute for Nutrition and Food Safety China CDCBeijing 100021China

Objective To evaluate the androgenic and anti-androgenic effects of GH （growth hormone） transgenic carp in male rats.Methods Hershberger assay was carried out in castrated male SD rats aged 4-5 weeks.Testosterone propionate （TP）（0.4 mg/kg BW） was administrated for a positive control,GH transgenic carp （3.0 g/kg BW）＋TP （0.4 mg/kg BW）,parental carp （3.0 g/kg BW）＋ TP （0.4 mg/kg BW）,and flutamide （Flu）（3.0 g/kg BW） were used for negative controls,and vehicle was administered orally for a blank control.All groups were administrated for 10 consecutive days.At the end of the test,animals were anesthetized,then weights of accessory sex organ were measured.Serum testosterone （T）,luteinizing hormone （LH）,and Follicle-Stimulating Hormone （FSH） levels were detected.Results The weights ratios of the accessory sex organs and body weights showed no significant differences between the solvent control and the GH transgenic carp-treated groups.Serum concentrations of FSH,LH,and T of the rats treated with GH transgenic carp ＋ TP showed no significant changes,compared with those treated with TP only.Conclusion GH transgenic carp does not have any androgenic agonist or antagonist properties in vivo screening tests.

关键词： GH gene transgenic carp Hershberger assay Androgenic properties

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

Impact of Cultural Identity on English learning for Chinese EFL Learners

引用

海外英语 2021年第13期 288-289页

作者：石文静 The applied college of sciences and arts Bejing Union UniversityBeijing 100191China

Based on the literature view of some published articles that report on the impact of cultural identity on English learning for Chinese EFL learners, this paper examines the relationship between cultural identity and language learning. Through the review of earlier researchers, this study points out cultural identity not only influences L1 language learning but also L2 language learning.Although many studies showed that the home cultural identity of the EFL or ESL learners has a negative impact on their English learning, there are also researchers stressing its positive impact on those learners. Finally, the paper makes two instructional suggestions to improve Chinese English competence of EFL learners.

关键词： cultural identity English learning Chinese EFL leamers

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

Toughness enhancement of single-crystal diamond by the homoepitaxial growth of periodic nitrogen-doped nano-multilayers

引用

International Journal of Minerals,Metallurgy and Materials 2023年第4期30卷 766-771页

作者： Yun Zhao Juping Tu Liangxian Chen Junjun Wei Jinlong Liu Chengming Li The Future Laboratory Tsinghua UniversityBeijing 100084China Academy of arts&Design Tsinghua UniversityBeijing 100084China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China college of science China Agricultural UniversityBeijing 100083China

Periodic nitrogen-doped homoepitaxial nano-multilayers were grown by microwave plasma chemical vapor deposition. The residual time of gases(such as CH4and N2) in the chamber was determined by optical emission spectroscopy to determine the nano-multilayer growth process, and thin, nanoscale nitrogen-doped layers were obtained. The highest toughness of 18.2 MPa·m^(1/2)under a Young’s modulus of1000 GPa is obtained when the single-layer thickness of periodic nitrogen-doped nano-multilayers is about 96 nm. The fracture toughness of periodic nitrogen-doped CVD layer is about 2.1 times that of the HPHT seed substrate. Alternating tensile and compressive stresses are derived from periodic nitrogen doping;hence, the fracture toughness is significantly improved. Single-crystal diamond with a high toughness demonstrates wide application prospects for high-pressure anvils and single-point diamond cutting tools.

关键词： microwave plasma chemical vapor deposition diamond fracture toughness nitrogen doping

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：