检索结果-南通市图书馆

Preparation of solar-enhanced AlZnO@carbon nano-substrates for remediation of textile wastewaters

Journal of Environmental Sciences 2020年第6期32卷 52-68页

作者： Esraa m.El-Fawal Sherif A.Younis Yasser m.moustafa philippe Serp Central Laboratories Analysis and Evaluation DepartmentEgyptian Petroleum Research InstituteNasr CityCairo 11727Egypt Laboratoire de Chimie de Coordination(LCC) Unite Propre de Recherche(UPR)Du Centre National de La Recherche Scientifique(CNRS)8241Composante de L’Ecole Nationale D’Ingenieurs en Arts Chimiques et Technologiques(ENSIACET)Universite de ToulouseUniversite Paul Sabatier(UPS)Institut National Polytechnique(INP)-LCC4 Allee Emile Monso31030Toulouse Cedex 4France

Photoactive aluminum doped ZnO(AlZnO)was synthesized by sol-gel *** that,AlZnO photocatalyst was deposited on five carbon-based materials(CBms)using ultrasonic route followed by solid-state mixing using ball *** CBms used were poly aniline(PANI),carbon nitride(CN),carbon nanotubes(CNT),graphene(G),and carbon nanofibers(CNF).The crystal phases,elemental compositions,morphological,and optical properties of the AlZnO@CBms composites were *** results revealed that two of AlZnO@CBms composites exhibited superior bleaching efficiency(100%removal)and photocatalytic stability(three cycles)for 50μmol/L methylene Blue(mB)contaminated water after 60 min irradiation in visible light at pH 6.5,0.7%H2O2,and 5 g/L inorganic *** optimum conditions,AlZnO@CBms nanocomposites were employed for the treatment of mixed dyestuffs composed of mB,methyl Orange(mO),Astrazone Blue FRR(BB 69),and Rhodamine B(RhB)dyes under dark,ultraviolet,visible,and direct *** mixed dyestuffs,the AlZnO@G achieved the highest dye sorption capacity(60.91μmol dye stuffs/g)with kinetic rate 8.22×10^-3 min^-1 in 90 min via multi-layer physisorption(Freundlich isotherm)on graphene *** additions,AlZnO@CN offered the highest photo-kinetic rate(Kphoto)of^54.1×10^-3 min^-1(93.8%after 60 min)under direct ***,the selective radical trapping experiment confirmed that the holes and oxidative superoxide radicals are crucial on dyes photodegradation *** to their superior performance,AlZnO@G and AlZnO@CN nanocomposites can offer an effective in-situ solar-assisted adsorption/photocatalytic remediation of textile wastewater effluents.

关键词： Carbon nanomaterials AlZnO photocatalyst Hybrid adsorption/photo-catalysis Kinetic and isotherm modeling Textile wastewater remediation

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

Analysis and Classification of Fake News Using Sequential Pattern mining

引用

Big Data mining and Analytics 2024年第3期7卷 942-963页

作者： m.Zohaib Nawaz m.Saqib Nawaz philippe Fournier-Viger Yulin He College of Computer Science and Software Engineering Shenzhen UniversityShenzhen 518060 Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen 518107China Department of Computer Science Faculty of Computing and Information TechnologyUnivesity of SargodhaSargodha 40100Pakistan

Disinformation,often known as fake news,is a major issue that has received a lot of attention *** researchers have proposed effective means of detecting and addressing *** machine and deep learning based methodologies for classification/detection of fake news are content-based,network(propagation)based,or multimodal methods that combine both textual and visual *** introduce here a framework,called FNACSPm,based on sequential pattern mining(SPm),for fake news analysis and *** this framework,six publicly available datasets,containing a diverse range of fake and real news,and their combination,are first transformed into a proper ***,algorithms for SPm are applied to the transformed datasets to extract frequent patterns(and rules)of words,phrases,or linguistic *** obtained patterns capture distinctive characteristics associated with fake or real news content,providing valuable insights into the underlying structures and commonalities of ***,the discovered frequent patterns are used as features for fake news *** framework is evaluated with eight classifiers,and their performance is assessed with various *** experiments were performed and obtained results show that FNACSPm outperformed other state-of-the-art approaches for fake news classification,and that it expedites the classification task with high accuracy.

关键词： disinformation fake news sequential pattern mining(SPm) frequent patterns classification

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

Cooperative interactions between nano-antennas in a high-Q cavity for unidirectional light sources

引用

Light(Science & Applications) 2019年第1期8卷 82-95页

作者： Kevin G.Cognee Hugo m.Doeleman philippe Lalanne A.F.Koenderink Center for Nanophotonics AMOLFScience Park 1041098 XG AmsterdamThe Netherlands LP2N Institut d’Optique Graduate SchoolCNRSUniversity of Bordeaux33400 TalenceFrance Van der Waals-Zeeman Institute University of AmsterdamScience Park 9041090 GL AmsterdamThe Netherlands

We analyse the resonant mode structure and local density of states in high-Q hybrid plasmonic-photonic resonators composed of dielectric microdisks hybridized with pairs of plasmon antennas that are systematically swept in position through the cavity *** the one hand,this system is a classical realization of the cooperative resonant dipole–dipole interaction through a cavity mode,as is evident through predicted and measured resonance linewidths and *** the same time,our work introduces the notion of‘phased array’antenna physics into plasmonic-photonic *** predict that one may construct large local density of states(LDOS)enhancements exceeding those given by a single antenna,which are‘chiral’in the sense of correlating with the unidirectional injection of fluorescence into the *** report an experiment probing the resonances of silicon nitride microdisks decorated with aluminium antenna *** directly confirm the predicted cooperative effects of the coupled dipole antennas as a function of the antenna spacing on the hybrid mode quality factors and resonance conditions.

关键词： antenna antennas cavity

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

Global significance of oxygen and carbon isotope compositions of pedogenic carbonates since the Cretaceous

引用

Geoscience Frontiers 2021年第4期12卷 34-45页

作者： marc Jolivet philippe Boulvais Géosciences Rennes CNRSUniv RennesUMR 6118F-35000RennesFrance

Few global syntheses of oxygen and carbon isotope composition of pedogenic carbonates have been attempted,unlike marine *** carbonates represent in-situ indicators of the climate conditions prevailing on *** δ^(18)O and δ^(13)C values of pedogenic carbonates are controlled by local and global factors,many of them not affecting the marine carbonates largely used to probe global climate *** compile pedogenic oxygen and carbon isotopic data(N=12,167)fromCretaceous to Quaternary-aged paleosols to identify potential trends through time and tie them to possible controlling *** discrete events such as the Paleocene-Eocene Thermal maximum are clearly evidenced,our analysis reveals an increasing complexity in the distribution of the δ^(18)O vs δ^(13)C values through the *** could be expected,the rise of C4 plants induces a shift towards higherδ13C values during the Neogene and *** also show that the increase in global hypsometry during the Neogene plays a major role in controlling the δ^(18)O and δ^(13)C values of pedogenic carbonates by increasing aridity downwind of orographic ***,during the Quaternary,an increase of 3‰in δ^(18)O values is recorded both by the pedogenic carbonates and the marine foraminifera suggesting that both indicators may be used to track global climate signal.

关键词： Global isotopic signal Cretaceous–Quaternary Pedogenic carbonates Topography

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

On the Stability of Racing Sailing Boats with Foils

引用

Chinese Annals of mathematics,Series B 2018年第3期39卷 427-450页

作者： philippe DESTUYNDER Caroline FABRE Département d'ingénierie mathématique Laboratoire M2N Conservatoire National des Arts et Métiers 292rue saint Martin75003 ParisFrance Laboratoire de mathématiques d'Orsay Univ.Paris-SudCNRSUniversitéParis-Saclay 91405 OrsayFrance

The development of foils for racing boats has changed the strategy of sailing. Recently, the America＇s cup held in San Francisco, has been the theatre of a tragicomic history due to the foils. During the last round, the New-Zealand boat was winning by 8 to 1 against the defender USA. The winner is the first with 9 victories. USA team understood suddenly （may be） how to use the control of the pitching of the inain foils by adjusting the rake in order to stabilize the ship. And USA won by 9 victories against 8 to the challenger NZ. The goal in this paper is to point out few aspects which could be taken into account in order to improve this mysterious control law which is known as the key of the victory of the USA team. There are certainly many reasons and in particular the cleverness of the sailors and of all the engineering team behind this project. But it appears interesting to have a mathematical discussion, even if it is a partial one, on the mechanical behaviour of these extraordinary sailing boats. The nunlerical exanlples given here are not the true ones. They have just been invented in order to explain the theoretical developments concerning three points： The possibility of tacking on the foils for sailing upwind, the nature of foiling instabilities, if there are, when the boat is flying and the control laws.

关键词： Hydrodynamics of foils mathematical analysis Stability

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

On Stochastic Error and Computational Efficiency of the markov Chain monte Carlo method

引用

Communications in Computational Physics 2014年第7期16卷 467-490页

作者： Jun Li philippe Vignal Shuyu Sun Victor m.Calo Center for Numerical Porous media King Abdullah University of Science and TechnologyThuwalSaudi Arabia material Science and Engineering King Abdullah University of Science and TechnologyThuwalSaudi Arabia Appliedmathematics and Computational Science Earth Sciences and EngineeringKing Abdullah University of Science and TechnologyThuwalSaudi Arabia.

Inmarkov Chainmonte Carlo(mCmC)simulations,thermal equilibria quantities are estimated by ensemble average over a sample set containing a large number of correlated *** samples are selected in accordance with the probability distribution function,known from the partition function of equilibrium *** the stochastic error of the simulation results is significant,it is desirable to understand the variance of the estimation by ensemble average,which depends on the sample size(i.e.,the total number of samples in the set)and the sampling interval(i.e.,cycle number between two consecutive samples).Although large sample sizes reduce the variance,they increase the computational cost of the *** a given CPU time,the sample size can be reduced greatly by increasing the sampling interval,while having the corresponding increase in variance be negligible if the original sampling interval is very *** this work,we report a few general rules that relate the variance with the sample size and the sampling *** results are observed and confirmed *** variance rules are derived for themCmCmethod but are also valid for the correlated samples obtained using other monte Carlo *** main contribution of this work includes the theoretical proof of these numerical observations and the set of assumptions that lead to them.

关键词： Phase coexistence Gibbs ensemble molecular simulation markov Chain monte Carlo method variance estimation blocking method

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

Ground support design for dynamic loading conditions:A quantitative data-driven approach based on rockburst case studies

引用

Journal of Rock mechanics and Geotechnical Engineering 2019年第5期11卷 909-919页

作者： philippe morissette John Hadjigeorgiou Agnico Eagle mines Limited 10 200route de PreissacRouyn-NorandaJ0Y 1C0Canada University of Toronto TorontoM5S 3E3Canada

There are considerable challenges associated with the design of ground support for seismically-active underground *** is extremely difficult to establish the demand on ground support as well as the capacity of a ground support *** resulting dynamic or impact loads caused by mining-induced seismicity are difficult to anticipate and *** performance of a ground support system is defined by the load distribution and interaction between several reinforcement and surface support ***,the design of ground support in seismically-active mines tends to evolve,or be modified based on qualitative assessments of perceived performance or response to significant seismic events or *** research is motivated by a need to provide quantitative and data-driven design guidelines for ground support systems subjected to dynamic-loading *** data were collected from three deep and seismically-active underground mines in the Sudbury basin in *** constructed database comprises 209 seismic events that resulted in damage to mine excavations and ground *** events were associated with damage at 324 locations within the three *** developed ground support design strategy,based on these documented case studies,identifies areas where the use of dynamic or enhanced support should be *** developed design methodology provides guidelines for the zoning of mine locations in which installation of enhanced support is recommended,the specifications for an optimal ground support system,and the timing or sequence of installation.

关键词： Ground support design mining-induced seismicity Rockburst

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

Current surgical treatments for Parkinson's disease and potential therapeutic targets

引用

Neural Regeneration Research 2018年第8期13卷 1342-1345页

作者： Darrin J.Lee Robert F.Dallapiazza philippe De Vloo Andres m.Lozano Division of Neurosurgery Toronto Western Hospital Department of Surgery University of Toronto

Currently, the most common surgical treatment for Parkinson＇s disease is deep brain stimulation（DBS）. This treatment strategy is typically reserved for bradykinesia, rigidity and tremor in patients who no longer respond to medication in a predictable manner or who suffer medication-induced dyskinesias. In addition to DBS, ablative procedures like radiofrequency, radiosurgery and focused ultrasound are also utilized for select tremor symptoms. In this review, we discuss evolving surgical techniques, targets, and emerging technology. In addition, we evaluate potential paradigm shifts in treatment, including gene therapy, immunotherapy and cell transplantation. While these new techniques and treatment options are still in their infancy, advances in Parkinson＇s disease treatment are rapidly expanding.

关键词： Parkinson's disease deep brain stimulation pallidotomy thalamotomy focused ultrasound gene therapy immunotherapy cell transplantation

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

Epidemiology of type 2 diabetes in the middle East and North Africa:Challenges and call for action

引用

World Journal of Diabetes 2021年第9期12卷 1401-1425页

作者： Imad m El-Kebbi Nayda H Bidikian Layal Hneiny mona philippe Nasrallah Department of Internal medicine Division of EndocrinologyAmerican University of Beirut Medical CenterFaculty of MedicineBeirut 11072020Lebanon Department of Internal medicine Sheikh Shakhbout Medical CityAbou Dhabi 11001United Arab Emirates School of medicine American University of BeirutFaculty of MedicineBeirut 11072020Lebanon University Libraries Saab Medical LibraryAmerican University of BeirutBeirut 11072020Lebanon

Type 2 diabetes continues to be a serious and highly prevalent public health problem *** 2019,the highest prevalence of diabetes in the world at 12.2%,with its associated morbidity and mortality,was found in the middle East and North Africa *** addition to a genetic predisposition in its population,evidence suggests that obesity,physical inactivity,urbanization,and poor nutritional habits have contributed to the high prevalence of diabetes and prediabetes in the *** risk factors have also led to an earlier onset of type 2 diabetes among children and adolescents,negatively affecting the productive years of the youth and their quality of ***,efforts to control the rising prevalence of diabetes and its complications have been challenged and complicated by the political instability and armed conflict in some countries of the region and the recent coronavirus disease *** strategies,coupled with targeted interventions at the regional,national,and community levels are needed to address and curb the spread of this public health crisis.

关键词： Type 2 diabetes middle East and North Africa Epidemiology Prevalence Prediabetes Complications

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

When parasitoids deal with the spatial distribution of their hosts: consequences for both partners

引用

Insect Science 2019年第5期26卷 923-931页

作者： philippe Louapre Cecile Le Lann Thierry Hance Earth and Life Institue Universite Catholique de LouvainLouvain-la-NeuveBelgium CNRS Biogeosciences UMR 6282Universite Bourgogne Franche-ComteDijonFrance UmR CNRS 6553 Ecobio University of Rennes 1Rennes CedexFrance

Insect parasitoids developing inside hosts face a true challenge: hosts are scattered in the field and their localization and selection require the use of complex and sometime confusing information. It was assumed for a long time that small-brained organisms like parasitoids have evolved simple and efficient behavioral mechanisms, leading them to be adapted to a given ecological situation, for example, the spatial distribution o f hosts in the habitat. However, hosts are not static and their distribution may also vary through generations and within the life of parasitoid individuals. We investigated if and how parasitoids deal with such a spatial com plexity in a m esocosm experiment. We used the Aphidius rhopalosiphi/Sitobion avenae parasitoid/host system to investigate if parasitoid females experiencing different host aggregation levels exhibit different foraging behaviors independently of the number of hosts in the environment. We showed that A. rhopalosiphi females exploited hosts more intensively both within and among patches at higher host aggregation levels. We discussed the adaptiveness of such behaviors in the light of evolution and biological control.

关键词： Aphidius rhopalosiphi foraging behavior parasitoid sequential adjustment Sitobion avenae spatial distribution

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

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：