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Chinese Journal of Chemical Engineering 2023年第1期53卷 317-323页

作者： Kechang Gao Shengjuan Shao Zhixing Li jiaxin jing Weizhou Jiao Youzhi Liu Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering North University of ChinaTaiyuan 030051China

In this study,high-gravity intensified heterogeneous catalytic ozonation is utilized for treatment of phenol-containing wastewater,and the kinetics of the direct reaction between ozone and phenol in the presence of excess tertiary butanol(TBA)is *** is revealed that the direct reaction between ozone and phenol in the rotating packed bed(RPB)follows the pseudo-first-order kinetics with a reaction rate constant higher than that in the conventional bubbling reactor(BR).Under different conditions of temperature,initial pH,high-gravity factor,and gaseous ozone concentration,the apparent reaction rate constant varies in the range of 0.0160–0.115 *** empirical power-exponential model is established to characterize the effects of these parameters on the direct reaction between ozone and phenol by high-gravity intensified heterogeneous catalytic ozonation.

关键词： High-gravity technique Heterogeneous catalysis Ozone Phenol Kinetics of the direct reaction

High-gravity intensified iron-carbon micro-electrolysis for degradation of dinitrotoluene

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Frontiers of Chemical Science and Engineering 2022年第11期16卷 1595-1605页

作者： jiaxin jing Weizhou Jiao Zhixing Li Kechang Gao jingwen Zhang Gaomiao Ren Youzhi Liu Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering North University of ChinaTaiyuan 030051China

The application of iron–carbon(Fe–C)micro-electrolysis to wastewater treatment is limited by the passivation potential of the Fe–C *** order to address this problem,high-gravity intensified Fe–C micro-electrolysis was proposed in this study for degradation of dinitrotoluene wastewater in a rotating packed bed(RPB)using commercial Fe–C particles as the *** effects of reaction time,high-gravity factor,liquid flow rate and initial solution pH were *** degradation intermediates were determined by gas chromatography-mass spectrometry,and the possible degradation pathways of nitro compounds by Fe–C micro-electrolysis in RPB were also *** is found that under optimal conditions,the removal rate of nitro compounds reaches 68.4%at 100 *** removal rate is maintained at approximately 68%after 4 cycles in RPB,but it is decreased substantially from 57.9%to 36.8%in a stirred tank *** is because RPB can increase the specific surface area and the renewal of the liquid–solid interface,and as a result the degradation efficiency of Fe–C micro-electrolysis is improved and the active sites on the Fe–C surface can be regenerated for continuous *** conclusion,high-gravity intensified Fe–C micro-electrolysis can weaken the passivation of Fe–C particles and extend their service life.

关键词： high-gravity technology rotating packed bed Fe–C micro-electrolysis dinitrotoluene wastewater active sites

欧洲博士生教育质量保障:生成背景、运行机制与基本类型

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现代教育管理 2022年第12期 96-105页

作者：胡天助荆佳新扬州大学教育科学学院江苏扬州225002

欧洲高度重视博士生教育,在多重背景下推动质量保障进程。从政策工具视角,欧洲博士生教育质量保障分为权威型、促进型、兼容型三种类型。权威型质量保障侧重国家立法、政府评估和问责;促进型质量保障侧重高等教育机构的自主、自治;兼容... 详细信息

欧洲高度重视博士生教育,在多重背景下推动质量保障进程。从政策工具视角,欧洲博士生教育质量保障分为权威型、促进型、兼容型三种类型。权威型质量保障侧重国家立法、政府评估和问责;促进型质量保障侧重高等教育机构的自主、自治;兼容型质量保障侧重政府评估、高等教育机构自治的融合。今后提高我国博士生教育质量,应从锚定博士生教育质量“输入”,完善博士生招生制度,强化博士生培养机构的资源供给;提高博士生教育质量“过程”管理能力;重视博士生教育质量“输出”,提高以学术能力、社会化能力为基础的博士生综合能力等方面努力。

关键词：博士生教育质量保障质量评估政策工具运行机制

超重力场中非均相催化臭氧降解苯酚表观反应动力学

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太原理工大学学报 2022年第3期53卷 457-465页

作者：高克昌吕行李知行任高妙景佳鑫张竞文刘有智焦纬洲中北大学化学工程与技术学院超重力化工过程山西省重点实验室太原030051

以球形Fe-Mn-CuO_(x)/γ-Al_(2)O_(3)催化剂作为旋转填料床(rotating packed bed,RPB)的填料,在不同反应条件(超重力因子β、溶液pH值、液体流量qL、温度T)下研究了超重力场中非均相催化O_(3)降解苯酚的表观反应动力学,对比了鼓泡反应器... 详细信息

以球形Fe-Mn-CuO_(x)/γ-Al_(2)O_(3)催化剂作为旋转填料床(rotating packed bed,RPB)的填料,在不同反应条件(超重力因子β、溶液pH值、液体流量qL、温度T)下研究了超重力场中非均相催化O_(3)降解苯酚的表观反应动力学,对比了鼓泡反应器(bubbling reactor,BR)中的反应速率常数,建立表观反应动力学经验模型。研究结果表明,在超重力场中,O_(3)与苯酚的直接反应速率常数(kPhOH/O3/RPB)介于8.17×10^(4)~8.80×10^(5) L·mol^(-1)·s^(-1)之间,·OH与苯酚的间接反应速率常数(kPhOH/·OH/RPB)介于1.54×10^(10)~1.78×10^(10) L·mol^(-1)·s^(-1)之间,均高于曝气装置(k_(PhOH/O3/BR)=1.64×10^(4) L·mol^(-1)·s^(-1),k_(PhOH/·OH/BR)=1.05×10^(10) L·mol^(-1)·s^(-1)),并且间接反应的活化能(0.53 kJ/mol)显著低于直接反应(34.07 kJ/mol).通过对各条件下的表观反应速率常数进行线性拟合,得到了直接反应与间接反应表观动力学经验模型,模型表明,在各影响因素中,超重力因子β对表观反应速率常数的影响最大。

关键词：超重力技术非均相催化臭氧羟基自由基苯酚表观反应动力学

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Mechanisms Underlying the Biological WetAdhesion:Coupled Effects of Interstitial Liquid and Contact Geometry

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Journal of Bionic Engineering 2020年第3期17卷 448-456页

作者： jing Li Jun Liu Chuandong Ma jiaxin Ji Jianlin Liu College of Mechanical and Electrical Engineering China University of Petroleum(East China)Qingdao 266580China College of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao 266580China

Wet adhesion is widely adopted in biological adhesion systems in nature,and it is beneficial to design new materials with desired properties based on the underlying physics of wet *** aim of this work is to develop a design criterion to regulate the wet *** effects of different contact shapes(flat and sphere)and morphologies of the substrate(smooth,microstructure and nanostructure)on the adhesion force are *** with the theoretical models,the dominated factors in the separation process and isolating the viscous contributions from the capillary interactions are *** results demonstrate that the adhesion mechanisms depend significantly on the capillary numbers of the interstitial liquid and the contact geometry,and the ratio of capillary force to viscous force is a key to regulate the wet adhesion *** findings can not only explain some phenomena of wet adhesion to organisms,but also provide some inspirations to design new adhesion technology for robotic fingers that can grasp objects in wet environments.

关键词： wet adhesion capillary force viscous force adhesion mechanism

脱灰煤基多孔炭制备及CH_(4)/N_(2)吸附分离性能

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洁净煤技术 2024年第S1期30卷 392-398页

作者：金晓宇刘晋芳景佳鑫董晓宇时勇李海燕荀文杰王玉高杨江峰山西焦煤集团炼焦煤清洁利用有限公司山西太原030024 太原理工大学化学工程与技术学院山西太原030024 山西汾西中兴煤业有限责任公司山西吕梁030500 山西汾西矿业(集团)曙光煤矿山西吕梁030500

煤层气中CH_(4)/N_(2)的高效分离对“双碳”目标的实现和低碳能源的补充具有重要意义。利用我国丰富的煤炭资源制备煤基多孔炭材料,可用于煤层气中CH_(4)/N_(2)的吸附分离。使用高煤化度煤作为炭前驱体原料,在盐酸与氢氟酸的作用下进行... 详细信息

煤层气中CH_(4)/N_(2)的高效分离对“双碳”目标的实现和低碳能源的补充具有重要意义。利用我国丰富的煤炭资源制备煤基多孔炭材料,可用于煤层气中CH_(4)/N_(2)的吸附分离。使用高煤化度煤作为炭前驱体原料,在盐酸与氢氟酸的作用下进行脱灰处理,与KOH研磨混匀并在氮气氛围下高温活化,制备出煤基多孔炭材料吸附分离CH_(4)/N_(2)。研究结果表明,在碱(KOH)煤比为2∶2,活化温度为800℃,脱灰煤制备的多孔炭BET比表面积为1307 m^(2)/g,孔径集中在0.54 nm处,在1×10^(5)Pa、298 K下对甲烷的吸附量为27.6 cm^(3)/g,IAST选择性为4.43,远高于相同实验和测试条件下未脱灰煤多孔炭的气体吸附分离性能;基于IAST选择性使用ASPEN软件模拟了CH_(4)/N_(2)(50%/50%)二元混合气的穿透实验,两者长的穿透时间间隔(50 s)表明脱灰煤制备的多孔炭材料具有实际的分离效果。

关键词：脱灰煤多孔炭材料 CH_(4)/N_(2) 吸附分离

Flexible 2D Cu Metal:Organic Framework@MXene Film Electrode with Excellent Durability for Highly Selective Electrocatalytic NH_(3) Synthesis

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Research 2022年第3期2022卷 321-331页

作者： jing Wang Tao Feng jiaxin Chen Jr-Hau He Xiaosheng Fang Department of Materials Science Fudan UniversityShanghai 200433China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Department of Materials Science and Engineering City University of Hong KongTat Chee AvenueKowloonHong Kong

Electrocatalytic nitrate reduction to ammonia(ENRA)is an effective strategy to resolve environmental and energy crisis,but there are still great challenges to achieve high activity and stability synergistically for practical application in a fluid *** flexible film electrode may solve the abovementioned problem of practical catalytic application owing to the advantages of low cost,light weight,eco-friendliness,simple and scalable fabrication,extensive structural stability,and electrocatalytic ***,2D hybridization copper 1,4-benzenedi-carboxylate(CuBDC)has been grown on electronegative MXene nanosheets(Ti_(3)C_(2)T_(x))seamlessly to prepare a 2D flexible CuBDC@Ti_(3)C_(2)T_(x)electrode for *** flexible electrode simultaneously exhibits high Faradaic efficiency(86.5%)and excellent stability for NH_(3)synthesis,which are comparable to previously reported nanomaterials toward ***,the flexible electrode maintains outstanding FENH_(3)toward ENRA after the bending,twisting,folding,and crumpling tests,indicating excellent electroconductibility,high stability,and *** work not only provides mild permeation-mediated strategy to fabricate a flexible electrode but also explores the practical applications of the electrode with effectively environmental adaptability in solving global environmental contamination and energy crisis by effective ENRA.

关键词： electrode catalytic stability

Sprayable nanodrug-loaded hydrogels with enzyme-catalyzed semiinter penetrating polymer network(Semi-IPN)for solar dermatitis

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Nano Research 2022年第7期15卷 6266-6277页

作者： Jialing Yao Junfeng Hui jing Yang jiaxin Yao Chaoquan Hu Daidi Fan Shaanxi Key Laboratory of Degradable Biomedical Materials Shaanxi R&D Center of Biomaterials and Fermentation EngineeringSchool of Chemical EngineeringNorthwest UniversityXi’an 710069China Nanjing IPE Institute of Green Manufacturing Industry Nanjing 211100China Biotech.&Biomed.Research Institute Northwest UniversityXi’an 710069China

Solar dermatitis is an acute or chronic high incidence of skin injury caused by ultraviolet(UV)radiation based on strong sunlight,which seriously endangers people's *** this study,we designed and demonstrated enzyme-catalyzed semi-inter penetrating polymer network(Semi-IPN)sprayable nanodrug-loaded hydrogels based on gelatin,3-(4-hydroxyphenyl)propionic acid(HPA),polyvinyl alcohol(PVA),glycerol,and dexamethasone sodium phosphate(DEXP)for solar *** hydrogels had high water content,excellent biocompatibility,effective encapsulation and sustained release of nanodrugs,antiinflammatory,and strong anti-ultraviolet B(anti-UVB)radiation properties based on glycerol and phenol functional groups,but also controllable spray gelation mode to make them adhere well on the dynamic skin surfaces and achieve continuous transdermal drugs delivery for solar *** sprayable nanodrug-loaded hydrogel systems could be used as a highly effective therapeutic method for solar dermatitis,and also provide a good strategy for designing novel nanodrug-loaded hydrogel delivery systems.

关键词： enzyme-catalyzed semi-inter penetrating polymer network(Semi-IPN) sprayable hydrogel nanodrug-loaded solar dermatitis

Preliminary data on effects of different street vegetation on stress recovery

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Building Simulation 2023年第11期16卷 2109-2121页

作者： Chao Liu Nan Zhang jiaxin Li jing Shi Weijun Gao Yanan Yu Innovation Institute for Sustainable Maritime Architecture Research and Technology Qingdao University of TechnologyQingdao266033China College of Architecture and Urban Planning Qingdao University of TechnologyQingdao266033China

Streets are important public spaces in daily life,and their stress-relieving abilities help to improve people’s physical and mental *** investigate the effects of different types of street vegetation on people’s stress recovery,this study used virtual reality technology to establish five street scenes with different vegetation types,including a non-vegetated street,a street with trees,a street with trees and grass,a street with trees and hedges,and a street with trees,grass,and ***-four participants completed the Trier Social Stress Test and then watched the five street scenes for stress *** rated the vegetated streets as significantly better at reducing stress than the non-vegetated *** with the non-vegetated street,the participants’POMS scores decreased by 2.59-12.09 and ROS scores increased by 0.83-3.67 after watching the vegetated streets,indicating significant improvement in mood(P<0.001).HRV data showed that the combination of trees,grass,and flowers was the most effective for stress recovery(LF/HF=0.67±0.42;pNN50=27.41%±16.32%).EEG data showed that participants’alpha power was 0.05-0.66µV2 higher and mental stress scores based on brainwave power were 0.23-0.37 points lower in the vegetated streets than in the non-vegetated *** occipital and frontal regions showed the most positive responses to changes in vegetation elements,and alpha brainwaves in the O2 channel were the most ***,the streets with vegetation were more conducive to stress recovery than the non-vegetated *** is thus suggested to integrate trees,grass,flowers,and other vegetation types along streets.

关键词： street vegetation stress recovery HRV EEG

Relevance of cathepsins activity and texture in slightly acidic electrolyzed water-slurry iced mackerel(Pneumatophorus japonicus)

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Food Bioscience 2022年第5期49卷 653-661页

作者： Weiqing Lan jiaxin Zhao Lin Liu jing Xie College of Food Science and Technology Shanghai Ocean UniversityShanghai201306China Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center Shanghai201306China National Experimental Teaching Demonstration Center for Food Science and Engineering(Shanghai Ocean University) Shanghai201306China

The incorporation of SAEW and SI can effectively maintain the characteristics of texture in marine *** study aimed to investigate the relevance of cathepsin activity for texture and the establishment of a shelf-life model of mackerel(Pneumatophorus japonicus)stored at 4◦*** the cold storage,mackerel samples were exposed to flake ice(Control),slurry ice(SI),and slightly acidic electrolyzed water-slurry ice(SAEW-SI),*** the TVC,K-value,cathepsin activity,texture,and sensory attributes were *** results showed that the TVC and K-value of samples in SAEW-SI group was significantly lower by approximately 1 log CFU/g and 17%than those in Control group(P<0.05).Meanwhile,there was a tendency to first increase and then decrease on the activities of cathepsin B,D and *** of texture profile analysis(TPA)clarified that SAEW-SI can markedly suppress the decrease of hardness,springiness and chewiness(P<0.05).During the experimental period,the highest sensory scores were obtained in SAEW-SI *** addition,the heat map of correlation analysis suggested that texture attributes(hardness)were negatively correlated with cathepsin B(r=-0.66),cathepsin D(r=-0.49),and cathepsin L(r=-0.69),*** to the principal component analysis(PCA)and analysis of linear regression,SAEW-SI treatment could effectively maintain mackerel quality and extend the estimated shelf-life of mackerel by at least 5 days compared to Control ***,SAEW-SI could be suggested as a novel strategy for cold-chain transportation in seafood industry.

关键词： Slightly acidic electrolyzed water Slurry ice Cathepsin Texture softening Shelf-life