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Journal of Energy Chemistry 2024年第3期90卷 600-609,I0013页

作者： Juntao gao Zhiyun Wei Mengke Yuan zhe wang zhe Lü Qiang Li Lingling Xu Bo Wei School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina School of Physics and Electronic Engineering Harbin Normal UniversityHarbin 150025HeilongjiangChina

Developing efficient and stable cathodes for low-temperature solid oxide fuel cells(LT-SOFCs) is of great importance for the practical ***,we propose a series of Sm-modified Bi_(0.7-x)Sm_xSr_(0.3)FeO_(3-δ) perovskites as highly-active catalysts for *** doping can significantly enhance the electrocata lytic activity and chemical stability of *** 600℃,Bi_(0.675)Sm_(0.025)Sr_(0.3)FeO_(3-δ)(BSSF25) cathode has been found to be the optimum composition with a polarization resistance of 0.098 Ω cm^2,which is only around 22.8% of Bi_(0.7)Sr_(0.3)FeO_(3-δ)(BSF).A full cell utilizing BSSF25 displays an exceptional output density of 790 mW cm^(-2),which can operate continuously over100 h without obvious *** remarkable electrochemical performance observed can be attributed to the improved O_(2) transport kinetics,superior surface oxygen adsorption capacity,as well as O_(2)p band centers in close proximity to the Fermi ***,larger average bonding energy(ABE) and the presence of highly acidic Bi,Sm,and Fe ions restrict the adsorption of CO_(2) on the cathode surface,resulting in excellent CO_(2) *** work provides valuable guidance for systematic design of efficient and durable catalysts for LT-SOFCs.

关键词： Low-temperature solid oxide fuel cell Perovskite cathode DFT calculations CO_(2) tolerance

Comparison of Microdroplet Digital PCR Assays with Real-time Fluorescence Quantitative PCR for Clostridioides difficile Detection

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Biomedical and Environmental Sciences 2023年第7期36卷 653-657页

作者： YIN Cai Hong SONG Zhan Yun LIU xing xing wang Xiao Mu wang Ying gao Cheng Cheng SONG Xiu Ling feng Xin College of Public Health Jilin UniversityChangchun 130021JilinChina Changchun customs Technology Center Changchun130062JilinChina CollegeofVeterinaryMedicine JilinUniversityChangchun130062JilinChina College of Basic Medical Sciences Jilin UniversityChangchun 130021JilinChina

Clostridioides difficile(***),is an anaerobic Gram-positive bacterium found in the human *** use of antibacterial drugs can result in *** infection(CDI)[1],which is one of the most important hospital-acquired diseases affecting all ***-and-culture-based identification and the cell cytotoxicity neutralization assay(CCNA)are considered the“gold standard”for detecting toxins or pathogenic strains[2],with long and time-consuming incubation *** quantitative polymerase chain reaction(PCR)is commonly used in clinical laboratory tests[3].However,the sensitivity,accuracy,and resolution of detection are limited by low-copy target gene molecules and subtle differences in template *** *** is distributed in feces in the natural environment and the sample matrix is complex,it is difficult to detect pathogens at low *** quantifying *** and implementing effective measures to combat *** infections are of utmost importance.

关键词： intestine drugs template

Defect CTF derived Ru-based catalysts for high performance overall water splitting reaction

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Journal of Energy Chemistry 2020年第11期29卷 135-142页

作者： Xu gao Yi-jing gao Sui-qin Li Jun Yang Gui-lin Zhuang Sheng-wei Deng Zi-Hao Yao xing Zhong Zhong-zhe Wei Jian-guo wang Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green-Chemical Synthesis TechnologyCollege of Chemical EngineeringZhejiang University of TechnologyHangzhou 310032ZhejiangChina

Research on water-splitting electrocatalysts is crucial to establishing a solution to the energy ***,we report a facile bottom-up strategy for the preparation of high performance supported electrocatalysts for overall water-splitting reaction via a rationally designed defect covalent triazine frameworks(CTFs)***,defect CTFs are obtained via binary-precursor polymerization,followed by loading Ru nanoparticles(Ru/D-CTFs-900)with high HER performance at a current density of 10 mA *** overpotential is only 17 *** of the resultant Ru–RuO2/D-CTFs-300 in air,produces excellent OER performance with 190 mV overpotential(at 10 mA cm-2).Furthermore,overall water splitting measurements reveal the potential of 1.47 V,which is better than the majority of the reported Ru-based ***,density functional theory calculation results show that excellent electrocatalytic properties are attributed to the synergistic effect of Ru nanoparticles and carbon support.

关键词： Covalent triazine frameworks Hydrogen evolution reaction Oxygen evolution reaction Overall water splitting Density functional theory

Dew measurement and estimation of rain-fed jujube (Zizyphus jujube Mill) in a semi-arid loess hilly region of China

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Journal of Arid Land 2017年第4期9卷 547-557页

作者： wang xing gao Zhiyong wang Youke wang Zhi JIN Shanshan Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Department of Water Conservancy Yangling Vocational & Technological College College of Water Resources and Architectural Engineering Northwest A&F University Department of Earth and Environmental Sciences California State University

Dew is an important water source for plants in arid and semi-arid regions. However, information on dew is scarce in such regions. In this study, we explored dew formation, amount, and duration of rain-fed jujube（Zizyphus jujube Mill） trees in a semi-arid loess hilly region of China（i.e., Mizhi County）. The data included dew intensity and duration, relative humidity, temperature, and wind speed measured from 26 July to 23 October, 2012 and from 24 June to 17 October, 2013 using a micro-climate system（including dielectric leaf wetness sensors, VP-3 Relative Humidity/Temperature Sensor, High Resolution Rain Gauge, and Davis Cup Anemometer）. The results show that atmospheric conditions of relative humidity of 〉78% and dew point temperature of 1°C–3°C are significantly favorable to dew formation. Compared with the rainfall, dew was characterized by high frequency, strong stability, and long duration. Furthermore, heavy dew accounted for a large proportion of the total amount. The empirical models（i.e., relative humidity model（RH model） and dew point depression model（DPD model）） for daily dew duration estimation performed well at 15-min intervals, with low errors ranging between 1.29 and 1.60 h, respectively. But it should be noted that the models should be calibrated firstly by determining the optimal thresholds of relatively humidity for RH model and dew point depression for DPD model. For rain-fed jujube trees in the semi-arid loess hilly regions of China, the optimal threshold of relative humidity was 78%, and the optimal upper and lower thresholds of dew point depression were 1°C and 5°C, respectively. The study further demonstrates that dew is an important water resource that cannot be ignored for rain-fed jujube trees and may affect water balance at regional scales.

关键词： dew formation dew amount dew duration jujube plantation empirical models Loess Plateau

Biodegradation of Crude Oil in Contaminated Soils by Free and Immobilized Microorganisms

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Pedosphere 2012年第5期22卷 717-725页

作者： wang zhen-Yu XU Ying wang Hao-Yun ZHAO Jian gao Dong-Mei LI feng-Min B. xing College of Environmental Science and Engineering Ocean University of China Qingdao 266100 (China) College of Animal Science and Veterinary Medicine Qingdao Agricultural University Qingdao 266109 (China) Chemical and Mineral Metal Material Testing Center Tianjin Entry-Exit Inspection and Quarantine Bureau Tianjin 300456 (China) Department of Plant Soil and Insect Sciences University of Massachusetts Amherst MA 01003 (USA)

The efficiencies of free and immobilized bacterial cultures of petroleum hydrocarbon degraders were evaluated and compared in this study. Hydrocarbon-degrading microbial communities with high tolerance to and high degrading ability of crude oil were obtained from the soil contaminated with crude oil in the Yellow River Delta. Then, the microbial cells were immobilized in sodium alginate （SA） beads and sodium Mginate-diatomite （SAD） beads. The biodegradation of crude oil in soil by immobilized cells was compared with that by free cells at three inoculation concentrations, 1× 104 colony forming units （cfu） kg-^（-1）（low concentration, L）, 5 × 104 cfu kg^（-1）（medium concentration, M）, and 1× 105 cfu kg^（-1）（high concentration, H）. At 20 d after inoculation, the maximum degradation rate in the immobilized systems reached 29.8% （SAD-M）, significantly higher （P 〈 0.05） than that of the free cells （21.1%）, and the SAD beads showed greater degradation than the SA beads. Moreover, both microbial populations and total microbial activity reached significantly higher level （P 〈 0.05） in the immobilized systems than free cell systems at a same initial inoculation amount. The scanning electronic microscope （SEM） images also confirmed the advantages of the immobilized microstructure of SAD beads. The enhanced degradation and bacterial growth in the SAD beads indicated the high potential of SAD beads as an effective option for bioremediation of crude oil-contaminated soils in the Yellow River Delta.

关键词： bacterial growth degradation rate hydrocarbon degraders immobilized cells sodium alginate-diatomite beads

Recent advances in metal-organic frameworks for lithium metal anode protection

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Chinese Chemical Letters 2020年第3期31卷 609-616页

作者： Ying Du xing gao Siwu Li Lu wang Bo wang Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster ScienceMinistry of EducationSchool of Chemistryand Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

The lithium metal battery has been considered as a promising candidate for next generation ***,safety concerns caused by uncontrollable lithium dendrite growth on lithium anode are severely hampering the commercial ***-organic frameworks(MOFs)become one of the most attractive materials due to the high porosity,structural designability and *** unique open channels and pores as well as functional components in MOFs,the transportation and deposition of lithium ions can be regulated,which leads to enhanced electrochemical prope *** strategies for lithium metal protection are proposed in recent wo rks on applications of MOFs in lithium metal *** this review,we highlight latest key approaches in this field and discuss the prospects for MOFs in advanced Li anodes.

关键词： Metal-organic frameworks Li anode Lithium metal batteries Li dendrite Protection

Prognostic Impact of Cell Division Cycle Associated 2 Expression on Pancreatic Ductal Adenocarcinoma

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Chinese Medical Sciences Journal 2016年第3期31卷 149-154页

作者： Meng-yi wang zhe-yu Niu Xiang-gao Li Zhou Quan Liao Yu-pei Zhao Department of General Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences & Peking Union Medical College

Objective To examine the expression of cell division cycle associated 2(CDCA 2) in pancreatic ductal adenocarcinoma(PDAC) and investigate its role in prognosis of PDAC *** This retrospective study included 155 PDAC patients who underwent surgical treatment and complete post-operative *** data were collected through clinical *** microarray was constructed and immunohistochemistry was performed to detect CDCA2 expression in the PDAC tumor tissues and adjacent non-tumor *** characteristics between high and low CDCA2 expression were *** of CDCA2 expressions with patients' survival was analyzed using Kaplan-Meier method and Cox regression *** Expression of CDCA2 in PDAC cells was significantly higher than that in adjacent non-tumor tissues(U=4056.5,P<0.001).Univariate analysis showed that CDCA2 expression [hazard ratio(HR)=1.574,95% confidence interval(CI)=1.014-2.443,P=0.043] and node metastasis(HR=1.704,95%CI=1.183-2.454,P=0.004) were significantly associated with *** regression analysis showed CDCA2 expression was not an independent prognostic risk factor(HR=1.418,95%CI=0.897-2.242,P=0.135) for PDCA *** survival analysis demonstrated CDCA2 expression as an independent prognostic risk factor in male patients(HR=2.554,95%CI=1.446-4.511,P=0.003) or in non-perineural invasion patients(HR=2.290,95%CI=1.146-4.577,P=0.012).Conclusions CDCA2 is highly expressed in PDAC tumor *** CDCA2 is not an independent prognostic risk factor for PDAC patients,it might be used to help predict prognosis of male or non-perineural invasion patients of PDAC.

关键词： cell division cycle associated 2 immunohistochemistry prognosis pancreatic ductal adenocarcinoma

Diclofenac derivatives with insulin-sensitizing activity

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Chinese Chemical Letters 2011年第4期22卷 409-412页

作者： Jian Ta wang Ying wang Ji Quan Zhang xing Cui Yi Zhang gao feng Zhu Lei Tang School of Pharmacy Guiyang Medical College Guiyang 550004 China

A series of diclofenac derivatives were *** insulin-sensitizing activity of 28 new compounds was evaluated in 3T3- L1 *** compounds 10a and 10f exhibited similar insulin-sensitizing activity with positive drug rosigli... 详细信息

关键词： Diclofenac derivatives Synthesis Insulin-sensitizing activity

Cephalopods-inspired Repairable MWCNTs/PDMS Conductive Elastomers for Sensitive Strain Sensor

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Chinese Journal of Polymer Science 2022年第4期40卷 384-393页

作者： Kaiming Zhang zhe wang Yuetao Liu Haoyu Zhao Chuanhui gao Yumin Wu State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China Key Laboratory of Colloid and Interface Chemistry and Key Laboratory of Special Aggregated Materials(Ministry of Education) Shandong UniversityJinan 250100China

Flexible electronic devices based on reversible bonds for self-curing capabilities arouses extensive ***,most of the composite conductive elastomers have the problems of poor mechanical properties and slow recovery of mechanical properties during multiple stretching,which hinder their stability in continuous *** this study,hyperbranched-MWCNTs/hyperbranched-PDMS self-healable conductive elastomers inspired by cephalopods were successfully *** prepared conductive elastomer exhibited good self-healing ability(91%)at room temperature excited by multiple reversible *** prepared elastomer showed outstanding mechanical properties and anti-fatigue ability,so that it can cope with more arduous ***,the elastomer was sensitive to the change of stress states and can be used as a stable strain ***,the self-repairing conductive elastomer has potential practicability in the fields of human-computer interaction,motion monitoring,soft robot and so on.

关键词： Self-healable Reversible interactions Hyperbranched Anti-fatigue Strain sensor

Variations in surface and electrical properties of polytetrafluoroethylene film after plasma-induced grafting of acrylic acid

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Nuclear Science and Techniques 2016年第3期27卷 88-95页

作者： Rong Li Xin-Zhong He Qian-Hong gao Li-Juan Pang Hong-Long wang Jiang-Tao Hu zhe xing Guo-Zhong Wu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China School of Physical Science and Technology Shanghai Tech UniversityShanghai 200031China

Polytetrafluoroethylene(PTFE) film was graftpolymerized with acrylic acid(AAc) via a low-temperature plasma *** effect of plasma treatment parameters(radio-frequency power and treatment time) on the spin number of free radicals in PTFE film was *** total reflection Fourier transform infrared(ATR-FTIR)spectroscopy,X-ray photoelectron spectroscopy,scanning electron microscopy,and atomic force microscopy were employed to characterize the chemical structure,surface composition,and microstructure of the original PTFE and PTFE-g-PAAc films,respectively,in order to verify the successful graft polymerization of AAc onto a PTFE film *** analysis illustrated that the thermal stability of bulk PTFE film remains unchanged after graft *** contact angle measurements confirmed that the hydrophilicity of PTFE-g-PAAc film was effectively improved as compared to the original PTFE *** dielectric constant(ε_r) of PTFE-g-PAAc(GD =218 μg/cm^2) film remained invariable,compared to that of the unmodified PTFE ***,the dielectric loss(tanδ) of PTFE film increased considerably,from 0.0002(GD = 0μg/cm^2) to 0.0073(GD = 218 μg/cm^2),which might be due to the increase in surface polarity and moisture resulting from AAc graft *** addition,the surface electrical resistance(R_s) of PTFE film decreased slightly,from 131.89(GD = 0 μg/cm^2) to 110.28 Ω cm^2(GD = 218μg/cm^2) after surface modification,but still retained its inherent high impedance.

关键词：聚四氟乙烯膜表面组成接枝聚合等离子体引发丙烯酸导电性能膨体聚四氟乙烯薄膜低温等离子体技术