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Polytitanium sulfate(PtS):Coagulation application and ti species detection

Journal of Environmental Sciences 2017年第2期29卷 250-258页

作者： Yanxia Zhao Sherub Phuntsho Baoyu Gao Hokyong shon Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityJinan 250100China Centre for technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of TechnologySydneyBroadwayNSW 2007Australia Key Laboratory for Special Functional Aggregated Materials of Education Ministry School of Chemistry and Chemical EngineeringShanclong UniversityJinan 250100China

Interest in the development of inorganic polymerized coagulants is growing; however, there are only limited studies on the synthesis of polytitanium coagulants, which are expected to exhibit improved coagulation efficiency with better floc properties. this study presents the synthesis of polytitanium sulfate（PtS） for potential application in water purification,followed by characterization of PtS flocs and titanium species detection. Stable PtS solutions were successfully synthesized and standard jar tests were conducted to evaluate their coagulation efficiency. Electrospray ionization time-of-flight mass spectrometry（ESI-tOF-MS） speciation analysis revealed that a variety of mononuclear and polynuclear complexes were formed in PtS solution, indicating the polymeric nature of the synthesized coagulant. Floc characteristics were studied through on-line monitoring of floc size using a laser diffraction particle size analyzer. Results showed that PtS had a comparable or in some cases even higher organic matter and particulate removal efficiency than ti（SO4）*** effluent p H after PtS coagulation significantly improved toward desirable values closer to neutral p H. Properties of flocs formed by PtS were significantly improved in terms of floc size, growth rate and structure. this study showed that PtS could be an efficient and promising coagulant for water purification, with the additional benefit that its coagulated sludge can be used to recover valuable tiO2 nanoparticles for various commercial applications.

关键词： Polytitanium sulfate Coagulation and flocculation titanium species Floc properties

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Atomic Evolutions of a Single Atom in a High-Q Cavity

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Chinese Physics Letters 2001年第11期18卷 1463-1466页

作者： ge Guo-Qing P.t.Leung Department of Physics Huazhong University of Science and TechnologyWuhan 430074 Department of Physics The Chinese University of Hong KongShatinHong KongChina

Atomic evolutions in a single atom laser system are studied for different preparations of the initial atomic state and cavity field. Both the analytical and the numerical results are in very good agreement with the experiment carried out by Brune et al. [Phys. Rev. Lett. 76 (1996) 1800], if we choose the same parameters as the experiment. the research justified that the spontaneous emission rates are enhanced in the high-Q cavity.

关键词： experiment. field. system

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Pseudouridines in spliceosomal snRNAs

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Protein & Cell 2011年第9期2卷 712-725页

作者： Andrew t.Yu Junhui ge Yi-tao Yu Department of Biochemistry and Biophysics Center for RNA BiologyUniversity of Rochester Medical Center601 Elmwood AvenueRochesterNY 14642USA Department of Pathology Changzheng HospitalSecond Military Medical UniversityShanghai 200003China

Spliceosomal RNAs are a family of small nuclear RNAs(snRNAs)that are essential for pre-mRNA *** vertebrate spliceosomal snRNAs are extensively pseudouridylated after *** in spliceosomal snRNAs are generally clustered in regions that are functionally important during *** of these modified nucleotides are conserved across species *** studies have demonstrated that spliceosomal snRNA pseudouridylation is catalyzed by two different mechanisms:an RNA-dependent mechanism and an RNA-independent *** functions of the pseudouridines in spliceosomal snRNAs(U2 snRNA in particular)have also been extensively *** data indicate that virtually all pseudouridines in U2 snRNA are functionally *** the currently known pseudouridines(constitutive modifications),recent work has also indicated that pseudouridylation can be induced at novel positions under stress conditions,thus strongly suggesting that pseudouridylation is also a regulatory modification.

关键词： small nuclear RNAs(snRNAs) pseudouridine spliceosome small nuclear ribonucleoproteins(snRNPs)

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Anthropogenic Effects on Biogenic Secondary Organic Aerosol Formation

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Advances in Atmospheric Sciences 2021年第7期38卷 1053-1084页

作者： Li XU Lin DU Narcisse t.tSONA Maofa ge Environment Research Institute Shandong UniversityQingdao 266237China State Key Laboratory for Structural Chemistry of Unstable and Stable Species Chinese Academy of Sciences Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Anthropogenic emissions alter biogenic secondary organic aerosol(SOA)formation from naturally emitted volatileorganic compounds(BVOCs).We review the major laboratory and field findings with regard to effects of anthropogenicpollutants(NO_(x),anthropogenic aerosols,SO_(2),NH_(3))on biogenic SOA ***_(x) participate in BVOC oxidationthrough changing the radical chemistry and oxidation capacity,leading to a complex SOA composition and yield sensitivitytowards NO_(x) level for different or even specific hydrocarbon *** aerosols act as an importantintermedium for gas-particle partitioning and particle-phase reactions,processes of which are influenced by the particlephase state,acidity,water content and thus associated with biogenic SOA mass ***_(2)modifies biogenic SOAformation mainly through sulfuric acid formation and accompanies new particle formation and acid-catalyzedheterogeneous *** new SO_(2)-involved mechanisms for organosulfate formation have also been ***_(3)/amines,as the most prevalent base species in the atmosphere,influence biogenic SOA composition and modify theoptical properties of *** response of SOA formation behavior to these anthropogenic pollutants varies amongdifferent BVOCs *** on anthropogenic-biogenic interactions in some areas of China that aresimultaneously influenced by anthropogenic and biogenic emissions are *** on this review,somerecommendations are made for a more accurate assessment of controllable biogenic SOA formation and its contribution tothe total SOA *** study also highlights the importance of controlling anthropogenic pollutant emissions witheffective pollutant mitigation policies to reduce regional and global biogenic SOA formation.

关键词： biogenic volatile organic compounds anthropogenic pollutants secondary organic aerosol anthropogenic-biogenic interactions China

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Review of the energy-based design theory:towards the application to self-centering systems

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Resilient Cities and Structures 2022年第1期1卷 80-97页

作者： ge Song Ying Zhou t.Y.Yang State Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China International Joint Research Laboratory of Earthquake Engineering Tongji UniversityShanghai 200092China Department of Civil Engineering The University of British ColumbiaVancouver V6T1Z4Canada

Self-centering systems exhibit superior performance during earthquake shaking with lower damage and less resid-ual *** the equivalent static force design procedure is the commonly used one for most structural systems for seismic applications,the cumulative damage and the effective duration of earthquakes cannot be explicitly considered,which has significantly affected the behaviors and post-earthquake performance of self-centering ***-based design theory(EBDt),which introduces the energy demand as the crit-ical parameter to establish relations with structural damage,has gained attention around the world in recent *** EBDt can provide comprehensive considerations for structural responses and damage in design procedures,especially for self-centering ***,few researches and actual energy design projects fo-cus on the use of EBDt for self-centering *** paper intends to present thorough review of several critical issues in ***,pivotal gaps that need to be further investigated towards the application of EBDt to self-centering systems are identified and discussed in the paper.

关键词： Self-centering systems Lower damage Cumulative damage Duration of earthquakes Energy-based design theory

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Consumers’experiences and preferences for plant-based meat food:Evidence from a choice experiment in four cities of China

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Journal of Integrative Agriculture 2023年第1期22卷 306-319页

作者： WANG ge Madison t PLAStER Bai Yun-li LIU Cheng-fang China Center for Agricultural Policy School of Advanced Agricultural SciencesPeking UniversityBeijing 100871P.R.China Yenching Academy Peking UniversityBeijing 100871P.R.China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101R.P.China United Nations Environment Programme–International Ecosystem Management Partnership Beijing 100101R.P.China

this paper examined consumers’experiences in and preferences for plant-based meat(PBM)food and their respective correlates,based on data from an online survey of 579 consumers in four major cities in China in early *** first described consumers’experiences in consuming and purchasing PBM food and their correlates,and then analyzed consumer preferences using hypothetical choice *** experiment offered consumers various options to purchase burgers made from PBM or animal-based meat(ABM),combined with different countries of origin(COO),taste labels,and *** data showed that respondents hold overall positive attitudes toward PBM food;85 and 82%of respondents reported experience in eating and purchasing PBM food,*** than half of them ate PBM food because they wanted to try new food(58%),or were interested in healthy food(56%).Income,religion,and dietary restrictions were significantly correlated with consumers’experiences in PBM food *** from the Random Parameter Logit Model based on the hypothetical choice experiment data showed that 79%of respondents chose PBM burgers and were willing to pay an average of 88 CNY for a PBM *** also found that 99.8 and 83%of respondents are willing to buy burgers made in China and those with a taste label,with a willingness to pay(WtP)of 208 and 120 CNY,*** heterogeneity test revealed that females and those with at least a bachelor’s degree,higher income,religious beliefs,and dietary restrictions are more likely to buy PBM burgers than their counterparts.

关键词： plant-based meat(PBM) choice experiment consumers’preference willingness to pay

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Decoupled δ^(13)Ccarb and δ^(13)Corg records at triassic–Jurassic boundary interval in eastern tethys: Environmental implications for spatially different global response

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geoscience Frontiers 2021年第4期12卷 175-184页

作者： Yuzhu ge Department of Earth Sciences Khalifa University of Science and TechnologyPO Box 127788Abu DhabiUnited Arab Emirates Institute of geology Mineralogy and GeophysicsRuhr-University Bochum44780 BochumGermany

Althoughδ^(13)C data(eitherδ^(13)Ccarb orδ^(13)Corg)ofmany triassic–Jurassic(t-J)sections have been acquired,pairedδ^(13)Ccarb andδ^(13)Corg from continuous t-J carbonate sections,especially in eastern tethys,have been scarcely *** study presents paired and decoupledδ^(13)Ccarb andδ^(13)Corg data from a continuous t-J carbonate section in Wadi *** t-J Wadi Naqab carbonate section,located in United Arab Emirates,Middle East,represents tropical and shallow marine sedimentation in eastern *** the t-J boundary interval,an initial carbon isotope excursion(CIE)is observed with different magnitude of isotope excursion and timing inδ^(13)Ccarb andδ^(13)Corg,while subsequently a positive CIE is only distinct inδ^(13)*** on petrological,carbon isotope,Rock-Eval and elemental analyses,theδ^(13)Ccarb is thought to record marine inorganic carbon,and theδ^(13)Corg to record terrigenous organic ***,the pairedδ^(13)Ccarb andδ^(13)Corg herein potentially document simultaneous changes in t-J atmospheric and marine settings of eastern *** decoupled behavior may likely be caused by different changes or evolution of carbon pool between marine and atmospheric *** initial CIE present in bothδ^(13)Ccarb andδ^(13)Corg may indicate influence of isotopically light carbon release related to CAMP activity in both atmospheric and marine *** following positive CIE only inδ^(13)Ccarb suggests relatively steady carbon isotope composition in atmosphere,but enhanced burial of isotopically light carbon in marine ***,the t-J carbonates in the studied section were possibly deposited in normal and oxic shallow marine *** correlation based on the Wadi Naqab section and other t-J sections suggests spatially different t-J environmental parameters:in eastern tethys and western Panthalassa,oxic condition,lacking organic-rich sediment,weaker ocean acidification and less influence of isotopically light carbon ar

关键词： triassic–Jurassic δ^(13)C records Eastern tethys Global difference

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Bionic MEMS for touching and Hearing Sensations: Recent Progress, Challenges, and Solutions

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Journal of Bionic Engineering 2022年第3期19卷 590-615页

作者： Chang ge Edmond Cretu Department of Electrical and Computer Engineering The University of British ColumbiaVancouverBCV6T 1Z4Canada

this paper reviews the recent progress on bionic microelectromechanical systems(MEMS)used for touching and hearing sensations,focusing on the following three types of devices:MEMS tactile sensors,MEMS directional microphones,and MEMS vector *** reviewing the electromechanical coupling principles,design,and performance of these MEMS devices,the authors conclude that it is vital for future research efforts in bionic MEMS to focus more on microfabrication *** development of robust microfabrication flows is the basis to implement hybrid electromechanical coupling principles based on novel functional ***-quality polymeric micromachining technologies can also significantly enhance the potential of existing bionic MEMS designs for more practical applications.

关键词： Bionic MEMS tactile sensor Directional microphone Vector hydrophone Polymeric micromachining PDMS SU-8

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Recent advances in petrophysical and geophysical characterization of unconventional resources:Introduction

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Energy geoscience 2023年第2期4卷 62-63页

作者： Xinmin ge Michael t.Myers Jun Li China University of Petroleum(East China) QingdaoShandong266580China University of Houston HoustonTexas77204USA SINOPEC Petroleum Exploration and Production Research Institute Beijing102206China

As a bridge between the reservoir performance and the geophysical well logging data,petrophysical measurements and its characterization are very important for the exploration and development of the unconventional resources in tight sandstone,carbonate and shale *** this special issue of Energy geoscience,“Recent advances in petrophysical and geophysical characterization of unconventional resources”,we organized and invited authors to present recent advances in various subjects addressing new petrophysical characterizations and geophysical models in unconventional reservoirs.

关键词： geophysical reservoirs sandstone

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Convergence Rate of the Asymmetric Deffuant-Weisbuch Dynamics

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Journal of Systems Science & Complexity 2015年第4期28卷 773-787页

作者： ZHANG Jiangbo CHEN ge the Faculty of Science Southwest Petroleum University Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences

this paper considers the convergence rate of an asymmetric Deffuant-Weisbuch *** model is composed by finite n interacting *** this model,agent i’s opinion is updated at each time,by first selecting one randomly from n agents,and then combining the selected agent j’s opinion if the distance between j’s opinion and i’s opinion is not larger than the confidence radiusε*** yields the endogenously changing inter-agent *** on the previous result that all agents opinions will converge almost surely for any initial states,the authors prove that the expected potential function of the convergence rate is upper bounded by a negative exponential function of time t when opinions reach consensus finally and is upper bounded by a negative power function of time t when opinions converge to several different limits.

关键词： Convergence rute Deffuant-Weisbuch model multi-agent systems opinion dynamics.

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