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Electrochemically assisted production of biogenic palladium nanoparticles for the catalytic removal of micropollutants in wastewater treatment plants effluent

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Journal of Environmental Sciences 2023年第6期128卷 203-212页

作者： Cindy Ka Y Law Kankana Kundu Luiza Bonin Lorena Peñcoba-Antona Eduardo Bolea-Fernandez frank Vanhaecke Korneel Rabaey Abraham Esteve-nez Bart De Gusseme nico Boon Center for Microbial Ecology and Technology(CMET) Ghent UniversityCoupure Links 653B-9000 GentBelgium Centre for Advanced Process Technology for Urban Resource recovery(CAPTURE) P.O.Frieda Saeysstraat 1B-9000 GentBelgium METfilter S.L. Autovía A49 Sevilla-Huelva Km 2841820 Carrión de los CéspedesSevillaSpain IMDEA Water Institute Av.Punto Com2Parque Científico Tecnológico28805 Alcaláde HenaresMadridSpain Atomic&Mass Spectrometry(A&MS)research group Department of ChemistryGhent UniversityCampus SterreKrijgslaan 281-S12B-9000 GhentBelgium Universidad de Alcalá Department of Analytical ChemistryPhysical Chemistry and Chemical EngineeringCtra.Madrid-Barcelona Km 33.60028871 Alcaláde HenaresMadridSpain

Biogenic palladium nanoparticles(bio-Pd nPs)are used for the reductive transformation and/or dehalogenation of persistent *** this work,H2(electron donor)was produced in situ by an electrochemical cell,permitting steered production of differently sized bio-Pd *** catalytic activity was first assessed by the degradation of methyl *** nPs showing the highest catalytic activity were selected for the removal of micropollutants from secondary treated municipal *** synthesis at different H2 flow rates(0.310 L/hr or 0.646 L/hr)influenced the bio-Pd nPs *** nPs produced over 6 hr at a lowH2 flow rate had a larger size(D50=39.0 nm)than those produced in 3 hr at a high H2 flow rate(D50=23.2 nm).Removal of 92.1%and 44.3%of methyl orange was obtained after 30 min for the nPs with sizes of 39.0 nm and 23.2 nm,***-Pd nPs of 39.0 nm were used to treat micropollutants present in secondary treated municipal wastewater at concentrations ranging fromμg/L to ng/*** removal of 8 compounds was observed:ibuprofen(69.5%)naproxen(81.4%)nac(91.9%)n(>94.3%)nated antibiotics occurred at>90%***,these data indicate that the size,and thus the catalytic activity of the nPs can be steered and that the removal of challengingmicropollutants at environmentally relevant concentrations can be achieved through the use of bio-Pd nPs.

关键词： Antibiotics Adsorption Biogenic palladium nanoparticles Catalytic activity H2 Secondary treated municipal wastewater

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Determination of nitrogen reduction levels necessary to reach groundwater quality targets in Slovenia

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Journal of Environmental Sciences 2014年第9期26卷 1806-1817页

作者： Miso Andelov Ralf Kunkel Jo?e Uhan.frank Wendland Slovenian Environment Agency Hydrogeological Analysis DivisionVojkova 1bSI-1000 LjubljanaSlovenia Forschungszentrum Jülich (FZJ) Institute of Bio- and Geosciences (IBG)Institute 3: Agrosphere52425 JuelichGermany

Within a collaborative project between Slovenian Environment Agency （ARSO） and Research Center Jfilich （FZJ）, nitrogen reduction levels necessary to reach groundwater quality targets in Slovenia were assessed. For this purpose the hydrological model GROWA- DEnUZ was coupled with agricultural n balances and applied consistently to the whole territory of Slovenia in a spatial resolution of 100 x 100 m. GROWA was used to determine the water balance in Slovenia for the hydrologic period 1971-2000. Simultaneously, the displaceable n load in soft was assessed from agricultural Slovenian n surpluses for 2011 and the atmospheric n deposition. Subsequently, the DEnUZ model was used to assess the nitrate degradation in soil and, in combination with the percolation water rates from the GROWA model, to determine nitrate concentration in the leachate. The areas showing predicted nitrate concentrations in the leachate above the EU groundwater quality standard of 50 mg nO3/L have been identified as priority areas for implementing nitrogen reduction measures. For these ＂hot spot＂ areas DEnUZ was used in a backward mode to quantify the maximal permissible nitrogen surplus levels in agriculture to guarantee a nitrate concentration in percolation water below 50 mg nO3/L. Model results indicate that additional n reduction measures should be implemented in priority areas rather than area-covering. Research work will directly support the implementation of the European Union Water Framework Directive in Slovenia, e.g., by using the maximal permissible nitrogen surplus levels as a framework for the derivation of regionally adapted and hence effective nitrogen reduction measures.

关键词： EU Water Framework DirectiveGroundwater quality targetsnitrate pollutionReactive nitrate transport modeling

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豆油类醇酸树脂乳液贮存稳定性研究(英文)

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复旦学报（自然科学版） 2000年第4期39卷 356-362页

作者：汪长春 frank n.Jones 复旦大学高分子科学系 Eastern Michigan University

豆油类醇酸树脂乳液贮存稳定性研究发现 ,乳化剂的种类、含量 ,助溶剂的种类、含量 ,及醇酸树脂的链结构等对其贮存稳定性有较大的影响 .另实验还发现 ,nP 10是一种非常适合于制备醇酸树脂乳液的乳化剂 ,加入适量的这种乳化剂可获得稳... 详细信息

豆油类醇酸树脂乳液贮存稳定性研究发现 ,乳化剂的种类、含量 ,助溶剂的种类、含量 ,及醇酸树脂的链结构等对其贮存稳定性有较大的影响 .另实验还发现 ,nP 10是一种非常适合于制备醇酸树脂乳液的乳化剂 ,加入适量的这种乳化剂可获得稳定性良好的醇酸树脂乳液 .2 丁氧基乙醇是一种性能优异的助溶剂 ,加入适量的2 丁氧基乙醇即可显著增强醇酸树脂乳液的贮存稳定性 .同时还发现 ,具有适当酸值和羟值的醇酸树脂有利于制备稳定的醇酸树脂乳液 .适当地调整上述助剂的量可以制备出具有优异稳定性的醇酸树脂乳液 .

关键词：醇酸树脂豆油甘油单酸酯缩聚反应

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China Labor Migration: Some Policy Issues

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Social Sciences in China 2005年第3期26卷 112-124页

作者： Huang Ping frank n.Pieke Research Fellow of the Institute of Sociology Chinese Academy of Social Sciences. Professor at the Institutefor Chinese Studies University of Oxford.

Executive *** paper argues that research and policy making in China ought to take more seriously the contribution that migration makes to the development of the migrants＇ areas of origin.

关键词：中国农村劳动者流动劳动力市场农民收入劳动力转移

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Effect of C/n ratio,aeration rate and moisture content on ammonia and greenhouse gas emission during the composting

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Journal of Environmental Sciences 2011年第10期23卷 1754-1760页

作者： Tao Jiang frank Schuchardt Guoxue Li Rui Guo Yuanqiu Zhao College of Resources and Environment Sciences China Agricultural University Beijing 100094 China Johann Heinrich von Thuenen-lnstitute Institute of Agricultural Technology and Biosystems Engineering Bundesallee 50 38116 Braunschweig Germany College of Chemistry and Biology Leshan Normal College Leshan 614004 China

Gaseous emission （n2O, CH4 and nH3） from composting can be an important source of anthropogenic greenhouse gas and air pollution. A laboratory scale orthogonal experiment was conducted to estimate the effects of C/n ratio, aeration rate and initial moisture content on gaseous emission during the composting of pig faeces from Chinese Ganqinfen system. The results showed that about 23.9% to 45.6% of total organic carbon （TOC） was lost in the form of CO2 and 0.8% to 7.5% of TOC emitted as CH4. Most of the nitrogen was lost in the form of nH3, which account for 9.6% to 32.4% of initial nitrogen. n20 was also an important way of nitrogen losses and 1.5% to 7.3% of initial total nitrogen was lost as it. Statistic analysis showed that the aeration rate is the most important factor which could affect the nH3 （p = 0.0189）, CH4 （p = 0.0113） and n20 （p = 0.0493） emissions significantly. Higher aeration rates reduce the CH4 emission but increase the nH3 and n20 losses. C/n ratio could affect the nH3 （p = 0.0442） and CH4 （p = 0.0246） emissions significantly, but not the n20. Lower C/n ratio caused higher nH3 and CH4 emissions. The initial moisture content can not influence the gaseous emission significantly. Most treatments were matured after 37 days, except a trial with high moisture content and a low C/n ratio.

关键词： pig faeces composting methane nitrous oxide ammonia

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四元niTiHfV合金的显微组织与马氏体相变（英文）

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Transactions of nonferrous Metals Society of China 2024年第10期 3282-3294页

作者： Aleksandr V.SHUITCEV 任艺张泽中 Roman n.VASIn 孙斌李莉佟运祥哈尔滨工程大学材料科学与化学工程学院黑龙江省先进纳米材料联合实验室(国际合作) frank Laboratory of neutron Physics Joint Institute for Nuclear Research 哈尔滨工程大学材料科学与化学工程学院分析测试中心

利用扫描电子显微观察、透射电子显微观察、X射线衍射分析、差示扫描量热分析、硬度测试和弯曲测试研究了(ni50Ti30Hf20)95V5合金的显微组织、马氏体相变行为与形状记忆性能。结果表明，添加V可显著影响合金的显微组织。添加V会导致合... 详细信息

利用扫描电子显微观察、透射电子显微观察、X射线衍射分析、差示扫描量热分析、硬度测试和弯曲测试研究了(ni50Ti30Hf20)95V5合金的显微组织、马氏体相变行为与形状记忆性能。结果表明，添加V可显著影响合金的显微组织。添加V会导致合金中形成室温下与B19′马氏体相共存的（ni,V）2（Ti,Hf）型Laves相。经550℃时效处理的合金表现出析出强化行为，这主要是因为合金中形成纳米尺寸的正交结构的H相。当时效时间为3 h时，合金表现出峰值硬度。与固溶态合金相比，时效态合金表现出较大的相变应变和较小的不可恢复应变，当外加应力为500 MPa时，合金达到最大相变应变，为1.56%。

关键词：形状记忆合金 niTiHfV H相 Laves相马氏体相变

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Modeling and analysis of a catastrophic oil spill and vapor cloud explosion in a confined space upon oil pipeline leaking

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Petroleum Science 2020年第2期17卷 556-566页

作者： Shengzhu Zhang Xu Wang Y.frank Cheng Jian Shuai China Academy of Safety Science and Technology Beijing 100012China Department of Mechanical Engineering University of CalgaryCalgaryAB T2N 1N4Canada College of Safety and Ocean Engineering China University of Petroleum(Beijing)Beijing 102249China

Oil spill-induced vapor cloud explosions in a confined space can cause catastrophic *** this work,investigation was conducted on the catastrophic pipeline leak,oil spill,and the resulting vapor cloud explosion accident occurring in China in 2013 by modeling analysis,field surveys,and numerical *** total amount of the spilled oil was up to2044.4 m3 due to improper *** long residence time of the oil remaining in a confined space permitted the formation of explosive mixtures and caused the vapor cloud explosion.A numerical model was developed to estimate the consequence of the explosion based on volatilization testing *** results show that the death-leading zone and the glass-breaking zone could be 18 m and 92 m,respectively,which are consistent with the field *** severity of the explosion is related to the amount of the oil spill,properties of oil,and volatilization *** is recommended that a comprehensive risk assessment be conducted to analyze the possible consequences upon oil spilling into a confined *** collection and ventilation measures should be taken immediately after the spill occurs to reduce the time for oil volatilization and prevent the mixture from reaching its explosive limit.

关键词： Pipeline leaking Oil spill Vapor cloud explosion Confined space Consequence analysis

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Backstepping approach for design of PID controller with guaranteed performance for micro-air UAV

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Control Theory and Technology 2020年第1期18卷 19-33页

作者： Yusuf KARTAL Patrik KOLARIC Victor LOPEZ Atilla DOGAn.frank LEWIS University of Texas at Arlington Research Institute Forth Worth 76118TXU.S.A. ZDepartment of Mechanical and Aerospace Engineering University of Texas at ArlingtonTKU.S.A.

Flight controllers for micro-air UAVs are generally designed using proportional-integral-derivative(PID)methods,where the tuning of gains is difficult and time-consuming,and performance is not *** this paper,we develop a rigorous method based on the sliding mode analysis and nonlinear backstepping to design a PID controller with guaranteed *** technique provides the structure and gains for the PID controller,such that a robust and fast response of the UAV(unmanned aerial vehicle)for trajectory tracking is ***,the second-order sliding variable errors are used in a rigorous nonlinear backstepping design to obtain guaranteed performance for the nonlinear UAV ***,using a small angle approximation and rigorous geometric manipulations,this nonlinear design is converted into a PID controller whose structure is naturally determined through the backstepping *** gains that guarantee robust UAV performance are finally computed from the sliding mode gains and from stabilizing gains for tracking error *** prove that the desired Euler angles of the inner attitude controller loop are related to the dynamics of the outer backstepping tracker loop by inverse kinematics,which provides a seamless connection with existing built-in UAV attitude *** implement the proposed method on actual UAV,and experimental flight tests prove the validity of these *** is seen that our PID design procedure yields tighter UAV performance than an existing popular PID control technique.

关键词： Quadrotor nonlinear controller trajectory tracking backstepping controller inverse kinematics

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Human enamel thickness and EnAM polymorphism

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International Journal of Oral Science 2016年第2期8卷 93-97页

作者： Diane M Daubert Joanna L Kelley Yuriy G Udod Carolina Habor Chris G Kleist Ilona K Furman Igor n Tikonov Willie J Swanson.frank A Roberts Department of Periodontics University of Washington Center for Reproductive Biology and School of Biological Sciences Washington State University Department of Oral and Maxillofacial Surgery University of Texas Southwestern Medical Center Department of Genome Sciences University of Washington

The tooth enamel development gene, enamelin （EnAM）, showed evidence of positive selection during a genome-wide scan of human and primate DnA for signs of adaptive evolution. The current study examined the hypothesis that a single-nucleotide polymorphism （SnP） C14625T （rs7671281） in the EnAM gene identified in the genome-wide scan is associated with a change in enamel phenotype. African Americans were selected as the target population, as they have been reported to have a target SnP frequency of approximately 50%, whereas non-Africans are predicted to have a 96% SnP frequency. Digital radiographs and DnA samples from 244 teeth in 133 subjects were analysed, and enamel thickness was assessed in relation to SnP status, controlling for age, sex, tooth number and crown length. Crown length was found to increase with molar number, and females were found to have thicker enamel. Teeth with larger crowns also had thicker enamel, and older subjects had thinner enamel. Linear regression and generalized estimating equations were used to investigate the relationship between enamel thickness of the mandibular molars and EnAM SnP status; enamel in subjects with the derived allele was significantly thinner （P= 0.040） when the results were controlled for sex, age, tooth number and crown length. The derived allele demonstrated a recessive effect on the phenotype. The data indicate that thinner dental enamel is associated with the derived EnAM genotype. This is the first direct evidence of a dental gene implicated in human adaptive evolution as having a phenotypic effect on an oral structure.

关键词： enamel genetics polymorphisms tooth development

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Financialization of the Economy and Income Inequality in China

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Economic and Political Studies 2014年第2期2卷 46-66页

作者： YU LUO frank ZHU the School of Finance Renmin University of China the College of Business University of Illinois at Urbana-Champaign

The income gap between the financial sector and other sectors has been widening since the mid-1990s. Why do financiers in China earn more than others? We analyze this issue against the background of financialization of the economy. The year 1993 was a watershed year, in which China began the process of rapid financialization. Since 1993, the financial sector has become increasingly powerful, overshadowing other sectors. Evidence shows that the high income levels that exist in the financial sector are related to this process of financialization in China. Financialization influences income distribution in China through two channels: money issuance and liquidation of social capital. The labor market equilibrium of the financial sector and wage level determination are not naturally formed but constructed. The increasing income inequality between the financial sector and other sectors is a consequence of financialization of the economy in China.

关键词： financialization income inequality social capital

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