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Comparison of Bottom-up Filling in Electroless Plating with an Addition of PEG, PPG and EPE

Chinese Journal of Chemistry 2011年第3期29卷 422-426页

作者： Yang, Zhifeng Wang, zhixiang Wang, xu Wang, Zenglin Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Materials Science Shaanxi Normal University Xi'an Shaanxi 710062 China

The bottom-up filling capabilities of electroless copper plating bath with an addition of additives, such as poly- ethylene glycol （PEG）, polypropylene glycol （PPG） and triblock copolymers of PEG and PPG with ethylene oxide terminal blocks termed EPE, were investigated by the cross-sectional scanning electron microscopy （SEM） obser- vation of sub-micrometer trenches. Though three additives had inhibition for electroless copper deposition, the suppression degrees of three additives were different. EPE-2000 had the strongest suppression for electroless copper deposition, and the suppression of PEG-2000 was the weakest. The bottom-up filling capability of electroless copper was investigated in a plating bath containing different additives with the concentration of 2.0 mg/L. The cross-sectional SEM observation indicated the trenches with the width of 280 nm and the depth of 475 nm were all completely filled by the plating bath with an addition of EPE-2000, but the trenches were not completely filled by the plating bath with an addition of PEG-2000 or PPG-2000, and some voids appeared. Linear sweep voltammetry measurement indicated that three additives all inhibited the cathodic reduction reaction and the anodic oxidation reaction, and the inhibition of EPE-2000 was the strongest among three additives, which agreed with that of the deposition rate of electroless copper. Significant differences in surface roughness of deposited copper film were observed by UV-visible near-infrared for different suppressors, and the bright and smooth of deposited copper film were in accordance with the inhibition of three additives.

关键词： bottom-up fill electroless plating damascene copper additives triblock copolymer

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Enhancing Hydrocarbon-Rich Bio-Oil Production via Catalytic Pyrolysis Fortified with Microorganism Pretreatment

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Journal of Renewable Materials 2023年第10期11卷 3595-3612页

作者： Jiapeng Wang Bo Zhang Haoqiang Cheng zhixiang xu Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education Southeast UniversityNanjing210096China School of Energy and Power Engineering Jiangsu UniversityZhenjiang212013China

A new method of pretreatment of corn straw with Phanerochaete chrysosporium combined with pyrolysis was proposed to improve the quality of *** characterization results demonstrated that microbial pretreatment was an effective method to decrease the lignin,which can achieve a maximum removal rate of 44.19%.Due to the destruction of biomass structure,the content of alkali metal and alkaline earth metal is ***,the depolymerized biomass structure created better pyrolysis conditions to promote the pyrolysis efficiency,increase the average decomposition rate of pyrolysis and reduce the *** fast pyrolysis,because of the enrichment of cellulose and the removal of lignin,the contents of acids,linear carbonyls,furans,and sugars increased while the contents of phenols *** for the catalytic pyrolysis,due to the hydrocarbon pool reaction and shape selection deoxidation of ZSM-5 catalyst,the total hydrocarbon and aromatics contents can significantly increase up to 34.37%and 30.59%,respectively,with 3 weeks of *** the the low molecular content of bio-oil increased after pretreatment,which can significantly benefit the entry of primary pyrolysis steam into the catalyst pores to improve the catalytic efficiency and hydrocarbon *** method provides a new treatment idea for high-quality utilization of biomass.

关键词： Corn straw lignin Phanerochaete chrysosporium pretreatment aromatics

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Can promoting ethanol gasoline usage improve air quality? Evidence from Tianjin, China

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Chinese Journal of Population,Resources and Environment 2022年第4期20卷 341-356页

作者： Lujiang Miao zhixiang xu Changyang Liu School of Business and Administration Southwestern University of Finance and EconomicsChengdu611130China School of Economics Southwestern University of Finance and EconomicsChengdu611130China School of Economics and Management Chongqing Jiaotong UniversityChongqing400074China

Promoting the use of ethanol gasoline is an important approach for China to achieve sustainable and high quality *** on the daily air quality data of Tianjin,China,from 2013 to 2020,this paper investigates whether the implementation of the ethanol gasoline policy helped improve air quality using regression discontinuity *** find that the implementation of the ethanol gasoline policy had a very limited positive effect on the overall air quality index(AQI)and no obvious effect on the reduction of particulate matter(PM_(2.5) and PM_(10)).However,the results reveal that the ethanol gasoline policy reduced SO_(2),NO_(2),and CO by about 36%,19%,and 20%,*** findings provide policy insights for other cities in China and other rapidly developing cities in the world to promote the use of ethanol gasoline.

关键词： Ethanol gasoline Air quality Regression discontinuity Tianjin

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A core-satellite self-assembled SERS aptasensor containing a“biological-silent region”Raman tag for the accurate and ultrasensitive detection of histamine

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Food Science and Human Wellness 2024年第2期13卷 1029-1039页

作者： Chen Chen Yingfang Zhang Ximo Wang xuguang Qiao Geoffrey I.N.Waterhouse zhixiang xu Key Laboratory of Food Processing Technology and Quality Control in Shandong Province College of Food Science and EngineeringShandong Agricultural UniversityTai’an 271018China School of Chemical Sciences The University of AucklandAuckland 1142New Zealand

Herein,a novel interference-free surface-enhanced Raman spectroscopy(SERS)strategy based on magnetic nanoparticles(MNPs)and aptamer-driven assemblies was proposed for the ultrasensitive detection of histamine.A core-satellite SERS aptasensor was constructed by combining aptamer-decorated Fe_(3)O_(4)@Au MNPs(as the recognize probe for histamine)and complementary DNA-modified silver nanoparticles carrying 4-mercaptobenzonitrile(4-MBN)(Ag@4-MBN@Ag-c-DNA)as the SERS signal probe for the indirect detection of *** an applied magnetic field in the absence of histamine,the assembly gave an intense Raman signal at“Raman biological-silent”region due to *** the presence of histamine,the Ag@4-MBN@Ag-c-DNA SERS-tag was released from the Fe_(3)O_(4)@Au MNPs,thus decreasing the SERS *** optimal conditions,an ultra-low limit of detection of 0.65×10^(-3)ng/mL and a linear range 10^(-2)-10^5 ng/mL on the SERS aptasensor were *** histamine content in four food samples were analyzed using the SERS aptasensor,with the results consistent with those determined by high performance liquid *** present work highlights the merits of indirect strategies for the ultrasensitive and highly selective SERS detection of small biological molecules in complex matrices.

关键词： Surface-enhanced Raman spectroscopy Raman biological-silent region Aptamer Histamine detection Universal SERS-tag

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3-Epi-betulinic acid 3-O-β-D-glucopyranoside(eBAG)induces autophagy by activation of AMP-activated protein kinase in hepatocellular carcinoma

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Food Science and Human Wellness 2024年第3期13卷 1453-1464页

作者： Mengjie Liu xuqiang Liu Kaiyue He Yongping Jian Yujia Li Jinrong Guo Jingyu Yang zhixiang xu Wenyi Kang School of Life Sciences Henan UniversityKaifeng 475004China National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Joint International Research Laboratory of Food&Medicine Resource Function Kaifeng 475004China Shenzhen Research Institute of Henan University Shenzhen 518000China

3-Epi-betulinic acid 3-O-β-D-glucopyranoside(eBAG)is a pentacyclic triterpene mainly distributed in food and medicinal plants,which exhibits various pharmacological ***,whether these functions are attributed to eBAG or additional components in these plants remain ***,we report that eBAG exerted an inhibitory activity against hepatocellular carcinoma and esophageal cancer *** induced non-apoptotic cell death in hepatocellular carcinoma *** eBAG-induced cell death was inhibited by knock-down of autophagy related gene(ATG)5 and ATG7,by administration of 3-methyladenine,a selective autophagy inhibitor that suppresses phosphoinositide 3-kinase(PI3K),and by chloroquine,a classic autophagy flux *** demonstrated that eBAG induced an autophagy-mediated cell *** of eBAG mimicked cellular bioenergetics depletion leading to the reduction of intracellular ATP,activation of AMP-activated protein kinase(AMPK),and inhibition of ***-treatment with compound C,an AMPK inhibitor,abrogated cell death induced by *** further validated the anti-tumor effect of eBAG in the murine xenograft model of hepatocellular carcinoma and found that eBAG treatment promoted the induction of autophagy and reduction of tumor growth in *** a functional food ingredient,eBAG is a potential therapeutic agent for the treatment of hepatocellular carcinoma and esophageal cancer.

关键词： eBAG Autophagy ATP AMPK Hepatocellular carcinoma

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Practical Experiences of Delivering Multidrug-Resistant Tuberculosis Comprehensive Supportive Care Services in China

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China CDC weekly 2021年第26期3卷 566-568页

作者： Yunzhou Ruan Ling Li Lin xu Yanlin Zhao Li Zhong zhixiang xu Kai Wang Wei Su Renzhong Li National Center for Tuberculosis Control and Prevention China CDCBeijingChina FHI 360 China Kunming Office KunmingYunnanChina Yunnan Center for Disease Control and Prevention KunmingYunnanChina

Summary What is already known about this topic?The World Health Organization consolidated guidelines on recommend care for tuberculosis(TB)and support for multidrug-resistant TB(MDR-TB)*** guidelines have not provided... 详细信息

关键词： tuberculosis Care Services

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SERS-tag techology in food safety and detection:sensing from the"fingerprint"region to the"biological-silent"region

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Journal of Future Foods 2024年第4期4卷 309-323页

作者： Chen Chen Ximo Wang Ruiqiang Wang Geoffrey LN.Waterhouse zhixiang xu College of Food Science and Engineering Shandong Agricutural UniversiyTai'an 271018China Shandong Cayon Testing Co. LtdJining 272000China School of Chemical Sciences The University of AucklandAnckland 1142New Zealand

Surface enhanced Raman spectroscopy(SERS)offers many advantages for the fast and sensitive detection of specific compounds,metal ions or pathogens in foods,motivating to its increasing utilization in food ***-tags,typically constructed using signal enhanced substrate,Raman reporter molecules,a biocompatible protective layer and a specific recognition element,provide a powerful tool for the analysis of food *** article reviews recent progress in the development of SERS-tags for food safety assessment covering SERS-tags with characteristic peaks in the“fingerprint”region(800-1800 cm-1)and the“biological-silent”region(1800-2800 cm-1).Following a brief description of SERS substrates,the design,synthesis and applications of SERS-tag are explored in *** application of SERS-tags technology for the detection of microorganisms,pesticides and antibiotics are then ***,the prospects of using SERS-tag in real-world food safety analysis are critically discussed.

关键词： Surface enhanced Raman spectroscopy SERS-tags Raman reporter molecule Fingerprint region Biological-silent region Food Safety

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Bifunctional ZrO2@ZIF-90 nanozyme with high phosphohydrolase activity for sensitive electrochemical detection of methyl parathion

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Food Science and Human Wellness 2024年

作者： Xiaomin Pang Geoffrey I.N.Waterhouse Ruiqiang Wang xuguang Qiao Yufeng Sun zhixiang xu Key Laboratory of Food Nutrition and Healthy in Universities of Shandong， College of Food Science and Engineering， Shandong Agricultural University School of Chemical Sciences， the University of Auckland Shandong Cayon Testing Co.， Ltd.

In this work， a novel bifunctional zirconium dioxide @ zeolitic imidazolate framework-90 (ZrO2@ZIF-90) nanozyme was successfully developed for the catalytic degradation and electrochemical detection of methyl parathion (MP). The ZrO2@ZIF-90 nanozyme with phosphatase hydrolysis activity can convert MP into p-nitrophenol (p-NP). The addition of ZrO2riched in Lewis acid Zr(IV) sites significantly enhanced the phosphatase hydrolysis activity of ZIF-90. ZrO2@ZIF-90 also displayed satisfactory electrocatalytic performance on account of the high surface area， high porosity and powerful enrichment ability of the ZIF-90 and the excellent ion transfer capacity of ZrO2. A ZrO2@ZIF-90 nanozyme modified glassy carbon electrode (ZrO2@ZIF-90/GCE) was then fabricated to analyze p-NP formed through MP degradation. Under the optimized conditions， the developed sensor displayed satisfactory analytical performance with a low limit of detection of 0.53 μmol L-1and two wide linear ranges (3-10 μmol L-1and 10-200 μmol L-1). ZrO2@ZIF-90 nanozyme accomplished to the degradation and electrochemical detection of MP in river water and spiked fruits. This study identifies a promising new strategy for the design of bifunctional nanozymes for the detection of environmental hazards.

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唯物史观视阈下发展“新质生产力”研究

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财经科学 2024年第5期 51-61页

作者：徐志向西南财经大学经济学院

唯物史观是科学理解和把握“新质生产力”内涵及其发展的方法论钥匙。基于唯物史观的考察,数字经济时代构成了“新质生产力”的出场语境,“新”主要体现于“质变”与“质态”双重维度,前者的核心是科技创新,后者体现为网络化、数字化、... 详细信息

唯物史观是科学理解和把握“新质生产力”内涵及其发展的方法论钥匙。基于唯物史观的考察,数字经济时代构成了“新质生产力”的出场语境,“新”主要体现于“质变”与“质态”双重维度,前者的核心是科技创新,后者体现为网络化、数字化、智能化的新经济形态。依循生产力与生产关系内部及二者之间矛盾运动的历史规律,发展“新质生产力”的根本目标是满足人民日益增长的美好生活需要,关键在于加快提升颠覆性科技创新整体系统能力,驱动力是构建与“新质生产力”发展相适应的“新型生产关系”。新时期,应以解决自主创新能力不足与破除体制机制障碍为重点,在正确处理好政府与市场关系的基础上,着力加快科技创新与体制机制创新“双轮驱动”,既要坚持产业化导向大力推动前沿性技术突破,同时也要以构建国家创新体系为方向深化科技体制改革。

关键词：唯物史观新质生产力新型生产关系科技创新矛盾运动

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Genetic and Phylogenetic Characterization of a Chikungunya Virus Imported into Shenzhen, China

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Virologica Sinica 2020年第1期35卷 115-119页

作者： Yang Yang zhixiang xu Haixia Zheng Jingdong Song Ying Wu Zhou Tong Jing Yuan Gary Wong William J.Liu Yuhai Bi Yingxia Liu George F.Gao Shenzhen Key Laboratory of Pathogen and Immunity Guangdong Key Laboratory for Diagnosis and Treatment of Emerging Infectious DiseasesState Key Discipline of Infectious DiseaseSecond Hospital Affiliated to Southern University of Science and TechnologyShenzhen Third People’s HospitalShenzhen 518112China CAS Key Laboratory of Pathogenic Microbiology and Immunology Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseaseInstitute of MicrobiologyCenter for Influenza Research and Earlywarning(CASCIRE)Chinese Academy of SciencesBeijing 100101China National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention(China CDC)Beijing 102206China Institute of Medical Virology School of Basic Medical SciencesWuhan UniversityWuhan 430071China Institut Pasteur of Shanghai Chinese Academy of SciencesShanghai 200031China Département de Microbiologie-Infectiologie et d’Immunologie Universite′LavalQuebec G1V 0A6Canada University of Chinese Academy of Sciences Medical School Chinese Academy of SciencesBeijing 101408China

Dear Editor,Chikungunya virus(CHIKV)is a mosquito-borne virus belonging to the family Togaviridae,genus Alphavirus,and was first isolated in Tanzania in the 1950s(Silva and Dermody 2017;Weaver and Lecuit 2015).Human infections with CHIKV typically result in a rapid-onset febrile disease,with symptoms that include fever,headache,rash,severe joint and muscle pain,as well as prolonged periods of disability in some patients(Weaver and Lecuit 2015;Silva and Dermody 2017).

关键词： Chi headache febrile

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