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Polyoxometalate-Based Porous Metal-Organic Gel for High-Efficiency Ultrasound-Assisted Oxidative Desulfurization of Model Fuel

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China Petroleum Processing & Petrochemical Technology 2022年第3期24卷 21-31页

作者： ji haifeng Liu Shuting Shi Hongfei Wang Weidong School of Petroleum and Chemical Engineering Jilin Institute of Chemical TechnologyJilin 132022 School of Chemical Engineering and Resource Recycling Wuzhou UniversityWuzhou 543033

A novel heterogeneous catalyst for ultrasound-assisted oxidative desulfurization(UAODS)was designed and synthesized by confining polyoxometalates(POMs)clusters within porous metal-organic *** catalyst microstructures were characterized by XRD,SEM-EDX,FT-IR,N_(2)adsorption-desorption,and *** of POM loading,catalyst dosage,and ultrasonic power were also *** indicate that 60%-PMA@MOX(Al)exhibits optimal catalytic activity,with a sulfur removal rate of 98.61%and excellent ***,a kinetic study of different desulfurization approaches demonstrates that the unique thermal and cavitation effects of ultrasound can effectively improve the efficiency of oxidative desulfurization.

关键词： ultrasound metal-organic gel oxidative desulfurization polyoxometalates

Void fraction measurement of bubble and slug flow in a small channel using the multivision technique

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Particuology 2017年第4期15卷 11-16页

作者： Huajun Li Xiaohu Zheng haifeng ji Zhiyao Huang Baoliang Wang Haiqing Li State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou 310027 China

Using the multivision technique, a new void fraction measurement method was developed for bubble and slug flow in a small channel. The multivision system was developed to obtain images of the two-phase flow in two perpendicular directions. The obtained images were processed--using image segmentation, image subtraction, Canny edge detection, binarization, and hole filling-to extract the phase boundaries and information about the bubble or slug parameters, With the extracted information, a new void fraction measurement model was developed and used to determine the void fraction of the two-phase flow. The proposed method was validated experimentally in horizontal and vertical channels with different inner diameters of 2.1, 2.9, and 4.0 mm, The proposed method of measuring the void fraction has better performance than the methods that use images acquired in only one direction, with a maximum absolute difference between the measured and reference values of less than 6%.

关键词： Gas-liquid two-phase flow Void fraction Bubble flow Slug flow Multivision technique

Measurement of bubble velocity using Capacitively Coupled Contactless Conductivity Detection(C^4D)technique

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Particuology 2013年第2期11卷 198-203页

作者： Baoliang Wang Ying Zhou haifeng ji Zhiyao Huang Haiqing Li State Key Laboratory of Industrial Control Technology Department of Control Science and EngineeringZhejing University

The feasibility of applying Capacitively Coupled Contactless Conductivity Detection （C4D） technique to measurement of bubble velocity in gas-liquid two-phase flow in millimeter-scale pipe is investigated. And, a new method, which combines the C4D technique and the principle of cross-correlation velocity measurement, is proposed for the measurement of bubble velocity. This research includes two parts. First, based on the principle of C4 D, a new five-electrode C4D sensor is developed. Then, with two conductivity signals obtained by the C4D sensor, the velocity measurement of bubble is implemented according to the principle of cross-correlation. The research results indicate that the C4D technique is highly effective and anticipates a broad potential in the field of two-phase flow. Experimental results show that the five-electrode C4D sensor is suitable for measuring the velocity of single bubbles with a relative error of less than 5%.

关键词： Bubble Velocity measurement Capacitively Coupled Contactless Conductivity Detection Cross-correlation velocity measurement

Design and Synthesis of Multi-Functional Polymeric Binders for High-Performance Lithium-Sulfur Batteries Based on Ring Opening Polymerization of Thiolactone

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Chinese Journal of Chemistry 2023年第20期41卷 2619-2627页

作者： Yuqing Zhao Shiqun Geng Gaojie Yan Xiongwei Qu haifeng ji Yi Feng Xiaojie Zhang Hebei Key Laboratory of Functional Polymers Department of Polymer Materials and EngineeringHebei University of TechnologyTianjin300130 China

The application of high-performance lithium-sulfur(Li-S)batteries is severely influenced by the“shuttle effect”of polysulfides and the volume change of sulfur ***,two different polymeric binders SOT-A and SOT-C with three-dimensional network structure containing polar groups(sulfhydryl groups,amide groups and amino groups)are synthesized by the nucleophilic ring-opening polymerization(ROP)of thiolactone with amino *** network structure formed by hydrogen bonds and functional groups can resist the volume change of the *** sulfhydryl groups and the S-S bond formed by oxidative dehydrogenation of sulfhydryl group participate in the charge and discharge process of the battery as active materials,which improves the discharge specific capacity of the *** functional groups have strong chemisorption on polysulfides and effectively inhibit the“shuttle effect”.The electrochemical performances of Li-S batteries containing SOT-A and SOT-C binders are significantly *** 1 C rate,the batteries achieve initial discharge specific capacity of 871 and 837 mAh·g^(-1),respectively,and have 83.9%and 62.5%capacity retention after 500 cycles.

关键词： Li-S batteries Polymeric binders Nucleophilic ring-opening polymerization Polar groups Three-dimensional network

Advances in Enhancing Hemocompatibility of Hemodialysis Hollow‑Fiber Membranes

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Advanced Fiber Materials 2023年第4期5卷 1198-1240页

作者： haifeng ji Yupei Li Baihai Su Weifeng Zhao Jayachandran N.Kizhakkedathu Changsheng Zhao College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065People’s Republic of China Department of Nephrology West China HospitalSichuan UniversityChengdu 610041China Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu 610207China Department of Pathology and Lab Medicine&Center for Blood Research&Life Science Institute 2350 Health Sciences MallLife Sciences CentreThe School of Biomedical EngineeringUniversity of British ColumbiaVancouverBC V6T 1Z3Canada

Hemodialysis,the most common modality of renal replacement therapy,is critically required to remove uremic toxins from the blood of patients with end-stage kidney ***,the chronic inflammation,oxidative stress as well as throm-bosis induced by the long-term contact of hemoincompatible hollow-fiber membranes(HFMs)contribute to the increase in cardiovascular diseases and mortality in this patient *** review first retrospectively analyzes the current clini-cal and laboratory research progress in improving the hemocompatibility of *** on different HFMs currently in clinical use and their design are ***,we elaborate on the adverse interactions between blood and HFMs,involving protein adsorption,platelet adhesion and activation,and the activation of immune and coagulation systems,and the focus is on how to improve the hemocompatibility of HFMs in these ***,challenges and future perspectives for improving the hemocompatibility of HFMs are also discussed to promote the development and clinical application of new hemocompatible HFMs.

关键词： Hemodialysis Hollow fiber membranes Hemocompatibility Surface modification Hemocompatibility characterization

The Risk and Prevention of Novel Coronavirus Pneumonia Infections Among Inpatients in Psychiatric Hospitals

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Neuroscience Bulletin 2020年第3期36卷 299-302页

作者： Yuncheng Zhu Liangliang Chen haifeng ji Maomao Xi Yiru Fang Yi Li Shanghai Mental Health Center Shanghai Jiao Tong University School of MedicineShanghai 200030China Shanghai Changning Mental Health Center(Affiliated to East China Normal University) Shanghai 200335China Institute of Burns Tongren Hospital of Wuhan University(Wuhan Third Hospital)Wuhan 430000China Affiliated Wuhan Mental Health Center Tongji Medical College of Huazhong University of Science and TechnologyWuhan 430012China CAS Center for Excellence in Brain Science and Intelligence Technology Shanghai 200031China Shanghai Key Laboratory of Psychotic Disorders Shanghai 201108China

Dear Editor,Since the middle of December 2019,human-to-human transmission of novel coronavirus pneumonia(NCP,also called COVID-19)has occurred among close contacts[1].After the outbreak on January 21,2020,it was swiftly included among the Class B infectious diseases stipulated in the Law of the People’s Republic of China on the Prevention and Control of Infectious Diseases,and measures for prevention and control of Class A infectious diseases were *** 21:27 on February 12,2020,the China News Network updated information to include epidemic data from the National Health Commission and official channels in Hong Kong,Macao,and Taiwan regions:the highest death rate was in Wuhan City(Table 1).Overload of inpatients at hospitals may play a negative role in the overall therapeutic effect and contribute to the death rate.

关键词： prevention Taiwan measures

Highly stretchable,conductive,and wide-operating temperature ionogel based wearable triboelectric nanogenerator

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Nano Research 2023年第9期16卷 11638-11645页

作者： Qianqian Zhu Weiqiang Liao Cong Sun Xuan Qin Fangjia Zhang haifeng ji Yuqi Li Zhen Wen Xuhui Sun Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of EducationCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004China

The rapid development of wearable electronic products brings challenges to corresponding power *** this work,a thermally stable and stretchable ionogel-based triboelectric nanogenerator(SI-TENG)for biomechanical energy collection is *** ionic conductivity of the ionogel increased to 0.53 S·m^(−1) through optimal regulation of the amount of aminoterminated hyperbranched polyamide(NH2-HBP),which also has high strain of 812%,excellent stretch recovery,and wide operating temperature range of−80 to 250°*** SI-TENG with this ionogel as electrode and silicone rubber both as the triboelectric layer and encapsulation layer exhibits high temperature stability,stretchability,and *** adding appropriate amount of nano SiO2 to triboelectric layer,the output performance is further improved by 93%.Operating in singleelectrode mode at 1.5 Hz,the outputs of a SI-TENG with an area of 3 cm×3 cm are 247 V,11.7μA,78 nC,and 3.2 W·m^(−2),*** was used as a self-charging power supply to charge a 22μF capacitor to 1.6 V in 167 s with the palm patting and then to power the electronic ***,the SI-TENG can also be used as a self-powered motion sensor to detect the amplitude and frequency of finger bending,human swallowing,nodding,and shaking of the head motion changes through the analysis of the output voltage.

关键词： triboelectric nanogenerator ionogel self-powered motion sensor stretchable temperature stability

Discovery of natural products capable of inducing porcine host defense peptide gene expression using cell-based high throughput screening

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Journal of Animal Science and Biotechnology 2021年第2期12卷 598-610页

作者： jing Wang Wentao Lyu Wei Zhang Yonghong Chen Fang Luo Yamin Wang haifeng ji Guolong Zhang Institute of Animal Husbandry and Veterinary Medicine Beijing Academy of Agriculture and Forestry SciencesBeijingChina Sino-US Joint Laboratory of Animal Science Beijing Academy of Agriculture and Forestry SciencesBeijingChina Institute of Quality and Standard for Agro-products Zhejiang Academy of Agricultural SciencesHangzhouChina College of Agriculture Ningxia UniversityYinchuanChina Department of Animal and Food Sciences Oklahoma State UniversityStillwaterOKUSA

Background:In-feed antibiotics are being phased out in livestock production *** to antibiotics are urgently needed to maintain animal health and production *** defense peptides(HDPs)are known for their broad-spectrum antimicrobial and immunomodulatory *** the synthesis of endogenous HDPs represents a promising antibiotic alternative strategy to disease control and ***:To identify natural products with an ability to stimulate the synthesis of endogenous HDPs,we performed a high-throughput screening of 1261 natural products using a newly-established stable luciferase reporter cell line known as IPEC-J2/*** ability of the hit compounds to induce HDP genes in porcine IPEC-J2 intestinal epithelial cells,3D4/31 macrophages,and jejunal explants were verified using *** of the antibacterial activity of porcine 3D4/31 macrophages against a Gram-negative bacterium(enterotoxigenic ***)and a Gram-positive bacterium(Staphylococcus aureus)were further confirmed with four selected HDP-inducing ***:A total of 48 natural products with a minimum Z-score of 2.0 were identified after high-throughput screening,with 21 compounds giving at least 2-fold increase in luciferase activity in a follow-up dose-response *** and deoxyshikonin were further found to be the most potent in inducing pBD3 mRNA expression,showing a minimum 10-fold increase in IPEC-J2,3D4/31 cells,and jejunal *** compounds such as isorhapontigenin and calycosin also enhanced pBD3 mRNA expression by at least 10-fold in both IPEC-J2 cells and jejunal explants,but not 3D4/31 *** addition to pBD3,other porcine HDP genes such as pBD2,PG1-5,and pEP2C were induced to different magnitudes by xanthohumol,deoxyshikonin,isorhapontigenin,and calycosin,although clear gene-and cell type-specific patterns of regulation were ***,these four compounds had a minimum effect on the expre

关键词： Antibiotic alternatives High throughput screening HDP inducers Host defense peptides Natural products

Self-Assembled Porous-Reinforcement Microstructure-Based Flexible Triboelectric Patch for Remote Healthcare

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Nano-Micro Letters 2023年第7期15卷 324-336页

作者： Hao Lei haifeng ji Xiaohan Liu Bohan Lu Linjie Xie Eng Gee Lim Xin Tu Yina Liu Peixuan Zhang Chun Zhao Xuhui Sun Zhen Wen Institute of Functional Nano and Soft Materials(FUNSOM) Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Electronic Engineering School of Advanced TechnologyXi’an Jiaotong-Liverpool UniversitySuzhou 215123People’s Republic of China Department of Applied Mathematics School of Mathematics and PhysicsXi’an Jiaotong-Liverpool UniversitySuzhou 215123People’s Republic of China Department of Electrical and Electronic Engineering University of LiverpoolLiverpool L693GJUK jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow UniversitySuzhou 215123JiangsuPeople’s Republic of China

Realizing real-time monitoring of physiological signals is vital for preventing and treating chronic diseases in elderly individuals. However,wearable sensors with low power consumption and high sensitivity to both weak physiological signals and large mechanical stimuli remain ***, a flexible triboelectric patch(FTEP) based on porous-reinforcement microstructures for remote health monitoring has been reported. The porousreinforcement microstructure is constructed by the self-assembly of silicone rubber adhering to the porous framework of the PU sponge. The mechanical properties of the FTEP can be regulated by the concentrations of silicone rubber dilution. For pressure sensing, its sensitivity can be effectively improved fivefold compared to the device with a solid dielectric layer, reaching 5.93 kPa^(-1) under a pressure range of 0–5 kPa. In addition, the FTEP has a wide detection range up to 50 kPa with a sensitivity of 0.21 kPa^(-1). The porous microstructure makes the FTEP ultra-sensitive to external pressure, and the reinforcements endow the device with a greater deformation limit in a wide detection range. Finally, a novel concept of the wearable Internet of Healthcare(Io H) system for real-time physiological signal monitoring has been proposed, which could provide real-time physiological information for ambulatory personalized healthcare monitoring.

关键词： Pressure sensor Triboelectric nanogenerator Porous dielectric layer Physiological signals Internet of Healthcare