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Performant Au hydrogenation catalyst cooperated with Cu-doped Al_(2)O_(3) for selective conversion of furfural to furfuryl alcohol at ambient pressure

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Green Energy & Environment 2021年第4期6卷 546-556页

作者： Junjie Chen Weixiao Sun yongxing wang Wenhao Fang School of Chemical Science and Technology Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of EducationFunctional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan ProvinceYunnan University2 North Cuihu Road650091 KunmingChina National Demonstration Center for Experimental Chemistry and Chemical Engineering Education Yunnan University650091 KunmingChina

Catalytic hydrogenation of furfural to furfuryl alcohol is an important upgrading process for valorization of biomass-derived furanyl platform ***,selective hydrogenation of a,b-unsaturated aldehydes like furfural to the corresponding alcohols at ambient pressure remains challenging in sustainable *** date heterogeneous Au hydrogenation catalyst has been scarcely reported for this reaction due to the low reactivity of Au for H_(2)*** this work,we showed that Au nanoparticles(loading:0.2 wt%)with a mean size of about 3 nm supported on Cu-doped Al_(2)O_(3)can efficiently hydrogenate furfural to furfuryl alcohol in liquid phase at ambient *** demonstrated that doping a small amount of Cu(2 mol%)to g-Al_(2)O_(3)may modify the Lewis acidity-basicity of Al_(2)O_(3)and simultaneously induce the presence of sufficient Cu^(+) species on surface,which facilitated the hydrogen transfer from i-PrOH to ***,we observed an enhanced reactivity of Au toward molecular H_(2)via cooperation with the Lewis acidic-basic Cu_(2)O-Al_(2)O_(3)***,100%yield to furfuryl alcohol with a productivity of 0.98 g_(FA),h^(-1),g^(-1)_(cat.)at 120C and 0.1 MPa H_(2)can be *** prepared Au/Cu-Al_(2)O_(3)catalyst was found reusable and was effective to the concentrated furfural solution,as well as several typical unsaturated aldehydes.

关键词： Supported Au catalyst Unsaturated aldehyde Hydrogenation Lewis acidity-basicity Cu^(+)species

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Efficient hydrogenation of furfural to furfuryl alcohol by magnetically recoverable RuCo bimetallic catalyst

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Green Energy & Environment 2022年第2期7卷 275-287页

作者： yongxing wang Tianyu Gao Yaowei Lu Yinghao wang Qiue Cao Wenhao Fang School of Chemical Science and Technology Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of EducationYunnan UniversityKunming650091China National Demonstration Center for Experimental Chemistry and Chemical Engineering Education Yunnan UniversityKunming650091China

A magnetically recoverable Ru Co bimetallic catalyst was reported for the catalytic hydrogenation of furfural to furfuryl alcohol under ambient H_(2) *** magnetic catalyst was prepared by H_(2) treatment of the Ru Co composite precursor from a facile one-pot hydrolysis of Co and Ru salts by NaBH_(4) *** catalyst can totally convert furfural to 98–100% furfuryl alcohol at 120°C under 1 bar H_(2) in isopropanol or water using only molecular H_(2) as hydrogen ***,the catalyst showed excellent stability during recycling test and can be easily and completely recovered by magnet from reaction *** influence of Ru/Co ratio and H_(2)-treatment temperature was studied,which were shown to be important for the structural evolution and the metal interaction in Ru Co active sites,based on the comprehensive characterizations including XRD,TGA,TEM,XPS,H_(2)-TPR,CO adsorbed *** was demonstrated that the cooperative Ru~0–Co~0 bimetallic active sites in strong interaction can significantly promote activity and selectivity of the catalyst due to an enhanced adsorption and activation of furfural and H_(2),and simultaneously created a strong magnetism in the Ru Co catalyst for simple physical separation.

关键词： solution catalyst alcohol

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Development and Tests of ZW-126/D2000-40 Vacuum Circuit Breakers with Controlled Switching Technology

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CSEE Journal of Power and Energy Systems 2022年第1期8卷 249-257页

作者： Yu Tian Jiayuan Xu Yuan Deng yongxing wang Enyuan Dong Jiyan Zou Dalian University of Technology Dalian 116024China State Grid Pinggao Group Pingdingshan 467001China

A ZW-126/D2000-40 type single-break vacuum circuit breaker(VCB)with controlled switching technology is designed and produced in this *** results of type tests based on IEC and GB standards are presented.A 126 kV singlebreak vacuum interrupter(VI)with 3/4 coil axial magnetic field(AMF)contacts is used in the VCB,which can interrupt short currents of 40 *** external insulation of the VI is provided by SF_(6) at 0.1 *** order to match the 126 kV single-break VI and controlled switching device,a long-stroke electro-magnetic force actuator(EMFA)with 16 kN closing holding force and 3.5 m/s average opening speed is ***,a position tracking controlled switching device based on closed-loop control using the technology of a fuzzy control algorithm and pulse width modulation is applied to the controlled switching *** device is applied to control the coil current of EMFA and the electromagnetic force,so as to control the EMFA to follow the ideal position *** type tests of 126 kV VCB are all passed according to the IEC62271-100 and GB1984-2014,including dielectric tests,basic short-circuit tests,shortline fault tests,out-of-phase tests,*** strong capacitive current breaking capacity and mechanical strength of the VCB are proved by the capacitive current switching test of class C2,electrical endurance test of class E2 and mechanical endurance test of class *** electromagnetic compatibility(EMC)tests are passed according to the *** controlled switching test of capacitive current was successful according to IEC62271-302 and GB/T30846-2014,and the controlled switching accuracy is less than±0.5 *** test results show that the VCB has excellent performance,which has broad application prospects in special occasions at a 126 kV voltage level,such as a switching capacitor and no-load transformer,etc.

关键词： Controlled switching electro-magnetic force actuator(EMFA) single-break type test vacuum circuit breaker(VCB)

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Simultaneous Removal of Sulfide, Nitrate and Ammonium Ions from Wastewater in One Reactor

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China Petroleum Processing & Petrochemical Technology 2019年第4期21卷 68-72页

作者： Liu Chunshuang Li Wei Bai Xue wang yongxing wang Yongqiang Liu Fang Zhao Chaocheng State Key Laboratory of Petroleum Pollution Control China University of PetroleumQingdao 266580 College of Chemical Engineering China University of PetroleumQingdao 266580

Simultaneous removal of sulfide, nitrate and ammonium salts was achieved in an upflow anaerobic sludge blanked(UASB) reactor by the start-up strategy of gradually decreasing influent nitrite to null. The sulfide/nitrate-nitrogen ratio could affect the distribution of end products of sulfur, and a sulfide/nitrate-nitrogen ratio of 1:0.76 is proposed as optimum for S^0 accumulation. The Denittrasoma, Thiobacillus, and Candidatus_Kuenenia presented the functional strains in the studied reactor. This result can provide a theoretical and technical basis for the large-scale application of anaerobic ammonium oxidation process.

关键词： nitrate sulfide ammonium anammox

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Rapid Acclimation of Methanogenic Granular Sludge into Autotrophic Partial Denitrification Granules

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China Petroleum Processing & Petrochemical Technology 2019年第3期21卷 68-73页

作者： Liu Chunshuang Li Xuechen Zhang Xiaofei Bai Xue Guo Yadong wang yongxing Zhao Chaocheng College of Chemical Engineering China University of PetroleumQingdao 266580China CNPC Research Institute of Safety and Environmental Technology Beijing 102206

Rapid formation of autotrophic partial denitrification(APD)granules is of practical interest to start up an expanded granular sludge bed reactor for wastewater *** study demonstrates that methanogenic granules can be easily acclimated into autotrophic partial denitrification granules in one day,with the ability to remove 82%of 2.7 kg-S/(m^3·d)sulfide into S^0 and to convert 97%of 0.9 kg-N/(m^3·d)nitrate into nitrite,which can provide a promising feedstock for anaerobic ammonia oxidation *** *** essential for S^0 *** high loadings,the abundance of Arcobacter ***,while on the contrary the abundance of unclassified_p_Firmicutes increased,leading to the deterioration of autotrophic partial denitrification *** granules performance could be recovered by adopting the strategies of properly reducing the influent loadings.

关键词： methanogenic granules nitrite accumulation autotrophic partial denitri fication sul fide

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Is China's Economy Overestimated?——Counter-Evidence from the Underground Economy

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China Economist 2019年第3期14卷 30-43页

作者： wang yongxing School of Economics Nankai University

Over the past four decades of reform and opening up since 1978, China's GDP has been growing at 9.5% on an annual average basis. While some scholars believe that China's economic growth is systematically overestimated, this paper carries out an estimation of China's underground economy and finds that due to the existence of the underground economy, China's real GDP is systematically underestimated. China's official GDP statistics generally reflect a real picture of its economic growth. The size of China's underground economy is significantly influenced by total electricity consumption, the selfemployed ratio, labor participation rate and money supply. These findings are of great significance for policy-making.

关键词： underground economy latent variable cash ratio model multiple indicators multiple causes (MIMIC) model

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Transmission-reflection decoupling of non-Hermitian photonic doping epsilon-near-zero media

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Frontiers of physics 2024年第3期19卷 93-102页

作者：王勇幸林季资须萍 Zhangjiagang Campus Jiangsu University of Science and TechnologyZhangjiagang 215600China Department of physics Jiangsu University of Science and Technology Suzhou Institute of TechnologyZhangjiagang 215600China School of Physical Science and Technology Soochow UniversitySuzhou 215006China

We present a novel method to achieve the decoupling between the transmission and reflection waves of non-Hermitian doped epsilon-near-zero(ENZ)media by inserting a dielectric slit into the *** method also allows for independent control over the amplitude and the phase of both the transmission and reflection waves through few dopants,enabling us to achieve various optical effects,such as perfect absorption,high-gain reflection without transmission,reflectionless high-gain transmission and reflectionless total transmission with different *** manipulating the permittivity of dopants with extremely low loss or gain,we can realize these effects in the same *** also extend this principle to multi-port doped ENZ structures and design a highly reconfigurable and reflectionless signal distributor and generator that can split,amplify,decay and phase-shift the input signal in any desired *** method overcomes limitations of optical manipulation in doped ENZ caused by the interdependent nature of the transmission and reflection,and has potential applications in novel photonic devices.

关键词： photonic doping non-Hermitian epsilon-near-zero media transmission-reflection decoupling

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Mitochondrial transcription factor A plays opposite roles in the initiation and progression of colitis-associated cancer

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Cancer Communications 2021年第8期41卷 695-714页

作者： Shirong Yang Xianli He Jing Zhao Dalin wang Shanshan Guo Tian Gao Gang wang Chao Jin Zeyu Yan Nan wang yongxing wang Yilin Zhao Jinliang Xing Qichao Huang State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology Fourth Military Medical UniversityXi’anShaanxi 710032P.R.China Department of General Surgery Tangdu HospitalFourth Military Medical UniversityXi’anShaanxi 710032P.R.China Department of Hepatobiliary Surgery Xijing HospitalFourth Military Medical UniversityXi’anShaanxi 710032P.R.China Department of Respiratory Medicine Xijing HospitalFourth Military Medical UniversityXi’anShaanxi 710032P.R.China

Background:Mitochondria are key regulators in cell proliferation and *** in mitochondrial function are closely associated with inflammation and *** study aimed to investigate whether mitochondrial transcription factor A(TFAM),a key regulator of mitochondrial DNA transcription and replication,is involved in the initiation and progression of colitis-associated cancer(CAC).Methods:TFAM expression was examined in tissue samples of inflammatory bowel diseases(IBD)and CAC by *** epithelial cell(IEC)-specific TFAM-knockout mice(TFAM^(△IEC))and colorectal cancer(CRC)cells with TFAM knockdown or overexpression were used to evaluate the role of TFAMin colitis and the initiation and progression *** underlying mechanisms of TFAMwere also explored by analyzingmitochondrial respiration function and ***:The expression of TFAM was downregulated in active IBD and negatively associated with the disease *** downregulation of TFAM in IECs was induced by interleukin-6 in a signal transducer and activator of transcription 3(STAT3)/miR-23b-dependent *** addition,TFAM knockout impaired IECturnover to promote dextran sulfate sodium(DSS)-induced colitis *** note,TFAMknockout increased the susceptibility of mice to azoxymethane/DSSinduced CAC and TFAM overexpression protected mice from intestinal inflammation and colitis-associated *** contrast,TFAM expression was upregulated in CAC tissues and contributed to cell ***,it was demonstrated that β-catenin induced the upregulation of TFAM through c-Myc in CRC ***,TFAMpromoted the proliferation of both IECs and CRC cells by increasing mitochondrial biogenesis and ***:TFAM plays a dual role in the initiation and progression of CAC,providing a novel understanding of CAC pathogenesis.

关键词： colitis colitis-associated cancer colorectal cancer energy metabolism inflammatory bowel diseases intestinal homeostasis mitochondrial transcription factor A(TFAM)

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Establishment of a system for screening and identification of novel bactericide targets in the plant pathogenic bacterium Xanthomonas oryzae pv. oryzae using Tn-seq and SPR

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Journal of Integrative Agriculture 2024年第5期23卷 1580-1592页

作者： Chaoyue Pang Ling Jin Haoyu Zang Damalk Saint-Claire SKoklannou Jiazhi Sun Jiawei Yang yongxing wang Liang Xu Chunyan Gu Yang Sun Xing Chen Yu Chen School of Plant Protection Anhui Agricultural UniversityHefei 230036China Institute of Plant Protection and Agro-Products Safety Anhui Academy of Agricultural SciencesHefei 230031China Anhui Province Laboratory for Green Pesticide Development and Application School of Plant ProtectionAnhui Agricultural UniversityHefei230036China Hefei Research Center State Key Laboratory for Biology of Plant Diseases and Insect PestsHefei 230036China Key Laboratory of Integrated Crop Pest Management of Anhui Province School of Plant ProtectionAnhui Agricultural University Hefei230036China Shandong Vicome Greenland Chemical Co. Ltd.Jinan 250204China

Xanthomonas spp. cause severe bacterial diseases. However, effective strategies for prevention and management of these diseases are scarce. Thus, it is necessary to improve the efficiency of control of diseases caused by Xanthomonas. In this study, Xanthomonas oryzae pv. oryzae(Xoo), which causes rice bacterial leaf blight, has been studied as a representative. A transposon insertion library of Xoo, comprising approximately 200,000 individual insertion mutants, was generated. Transposon sequencing data indicated that the mariner C9 transposase mapped at 35.7–36.4% of all potential insertion sites, revealing 491 essential genes required for the growth of Xoo in rich media. The results show that, compared to the functions of essential genes of other bacteria, the functions of some essential genes of Xoo are unknown, 25 genes might be dangerous for the Xanthomonas group, and 3 are specific to Xanthomonas. High-priority candidates for developing broad-spectrum, Xanthomonas-specific, and environment-friendly bactericides were identified in this study. In addition, this study revealed the possible targets of dioctyldiethylenetriamine using surface plasmon resonance(SPR) in combination with high performance liquid chromatography–mass spectrometry(HPLC–MS). The study also provided references for the research of some certain bactericides with unknown anti-bacterial mode of action. In conclusion, this study urged a better understanding of Xanthomonas,provided meaningful data for the management of bacterial leaf blight, and disclosed selected targets of a novel bactericide.

关键词： rice bacterial leaf blight Xanthomonas essential genes Tn-seq dioctyldiethylenetriamine

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中国地下经济的区域分布特征研究

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江苏社会科学 2010年第3期 56-61页

作者：王永兴南开大学经济学院讲师300071

最近二三十年,地下经济问题逐渐成为国内外学术界的一个研究热点。本文认为中国作为"大国"具有与"小国"迥异的空间延展性,因此研究我国地下经济的区域分布特征具有重要的现实意义。本文以我国省际数据为样本,利用系统聚类分析的方法研... 详细信息

最近二三十年,地下经济问题逐渐成为国内外学术界的一个研究热点。本文认为中国作为"大国"具有与"小国"迥异的空间延展性,因此研究我国地下经济的区域分布特征具有重要的现实意义。本文以我国省际数据为样本,利用系统聚类分析的方法研究了我国地下经济的区域特征。分析结果证明我国的地下经济分布表现出明显的区域差别,这种差别取决于多种要素,这些因素各自在不同区域中起主导因素。在此基础上本文对地下经济的治理提供了相应的政策建议。

关键词：地下经济区域分布聚类分析

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