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A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber

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Frontiers of Environmental Science & Engineering 2024年第4期18卷 1-4页

作者： Yunke Li Junjun Ma Chenxu Yang Jianrui Niu Yonghuan Bian Ruicheng Chen Puming Zhang Jing Zhang Chun Liu college of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China Pollution Prevention Biotechnology Laboratory of Hebei Province Shijiazhuang 050018China

Flow-electrode capacitive deionization(FCDI)is an innovative technology in which an intermediate chamber plays an important role in the desalination ***,relatively few studies have been conducted on the structures of these intermediate *** this study,we propose a novel flow-electrode capacitive deionization device with a spindle-shaped inlet chamber(S-FCDI).The desalination rate of the S-FCDI under optimal operating conditions was 36%higher than that of the FCDI device with a conventional rectangular chamber(R-FCDI).The spindle-shaped chamber transferred 1.2μmol more ions than the rectangular chamber,based on energy per ***,we performed a detailed analysis of different inlet chamber shapes using computational fluid dynamics *** concluded that S-FCDI has a relatively low flow resistance and almost no stagnation *** provides unique insights into the development of intermediate *** study may contribute to the improvement of the desalination performance in industrial applications of FCDI.

关键词： Spindle-shaped chamber Desalination performance Flow electrode capacitive deionization

Strategies to advance thermoelectric performance of PbSe and PbS materials

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Rare Metals 2024年第9期43卷 4099-4114页

作者： Zheng-Hao Hou Xin Qian Qiu-Juan Cui Shu-Fang Wang Li-Dong Zhao shijiazhuang Key Laboratory of Low Carbon Energy Materials College of Chemical EngineeringShijiazhuang UniversityShijiazhuang 050035China Hebei Key Lab of Optic-Electronic Information and Materials College of Physics Science and TechnologyHebei UniversityBaoding 071002China School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Thermoelectric materials possess the unique capability to convert thermal energy into electric energy and vice versa,making them promising for waste heat recovery and efficient cooling ***,extensively investigated thermoelectric materials such as Bi2Te3,PbTe and GeTe exhibit superior thermoelectric properties at room temperature and medium temperature ***,the broad application of these thermoelectric materials has been impeded by the high cost and restricted accessibility of Te and Ge in the earth's *** the past few years,researchers have shown increasing interest in PbSe-and PbS-based materials,primarily attributed to their abundant elemental supply and relatively low *** assessment of research progress and a comprehensive overview of optimization strategies in time can significantly contribute to further improving the thermoelectric *** strategies include optimizing carrier concentration(aliovalent doping,dynamic doping and defect state),enhancing density-of-state effective mass(band convergence,band flattening and energy filtering effect),optimizing carrier mobility(band sharpening and band alignment)and reducing lattice thermal conductivity(all-scale hierarchical defect structures designing).This systematic summary and analysis provide novel insights and perspectives for the development of thermoelectric materials.

关键词： PbSe and PbS thermoelectric materials Carrier concentration Density-of-state effective mass Carrier mobility Lattice thermal conductivity

CAUCHY TYPE INTEGRALS AND A BOUNDARY VALUE PROBLEM IN A COMPLEX CLIFFORD ANALYSIS

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Acta Mathematica Scientia 2024年第1期44卷 369-385页

作者：曹南斌李尊凤杨贺菊乔玉英 School of Mathematics and Science Hebei GEO UniversityShijiazhuang050031China college of Science Hebei University of Science and TechnologyShijiazhuang050018China School of Mathematical Sciences Hebei Normal UniversityShijiazhuang050024China

Clifford analysis is an important branch of modern analysis;it has a very important theoretical significance and application value,and its conclusions can be applied to the Maxwell equation,Yang-Mill field theory,quantum mechanics and value *** this paper,we first give the definition of a quasi-Cauchy type integral in complex Clifford analysis,and get the Plemelj formula for ***,we discuss the H?lder continuity for the Cauchy-type integral operators with values in a complex Clifford ***,we prove the existence of solutions for a class of linear boundary value problems and give the integral representation for the solution.

关键词： Clifford analysis Cauchy type integral Plemelj formula Holder continuous boundary value problems

Next‑Generation Green Hydrogen: Progress and Perspective from Electricity, Catalyst to Electrolyte in Electrocatalytic Water Splitting

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Nano-Micro Letters 2024年第11期16卷 274-322页

作者： Xueqing Gao Yutong Chen Yujun Wang Luyao Zhao Xingyuan Zhao Juan Du Haixia Wu Aibing Chen college of Chemical and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018People’s Republic of China

Green hydrogen from electrolysis of water has attracted widespread attention as a renewable power *** several hydrogen production methods,it has become the most promising ***,there is no large-scale renewable hydrogen production system currently that can compete with conventional fossil fuel hydrogen *** energy electrocatalytic water splitting is an ideal production technology with environmental cleanliness protection and good hydrogen purity,which meet the requirements of future *** review summarizes and introduces the current status of hydrogen production by water splitting from three aspects:electricity,catalyst and *** particular,the present situation and the latest progress of the key sources of power,catalytic materials and electrolyzers for electrocatalytic water splitting are ***,the problems of hydrogen generation from electrolytic water splitting and directions of next-generation green hydrogen in the future are discussed and *** is expected that this review will have an important impact on the field of hydrogen production from water.

关键词： Hydrogen Electrolysis Hydrogen production Renewable energy Catalyst

Bazi Bushen alleviates reproductive aging in aged male mice

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Chinese Journal of Natural Medicines 2024年第5期22卷 416-425页

作者： MA Kun LI Mengnan SONG Yahui MAO Xinjing ZHANG Shaolan ZHANG Yaping JIANG Yuning JI Chuanyuan NIU Kunxu LI Hongrong HOU Yunlong WEI Cong Graduate School Hebei University of Chinese MedicineShijiazhuang 050091China State Key Laboratory for Innovation and Transformation of Luobing Theory Shijiazhuang 050035China Key Laboratory of State Administration of TCM(Cardio-Cerebral Vessel Collateral Disease) Shijiazhuang 050035China college of Traditional Chinese Medicine·college of Integrated Traditional Chinese and Western Medicine Nanjing University of Chinese MedicineNanjing 210023China Hebei Provincial Key Laboratory of Luobing Shijiazhuang 050035China Key Disciplines of State Administration of TCM for Luobing Shijiazhuang 050035China

Bazi Bushen(BZBS),a traditional Chinese medicine(TCM),has demonstrated therapeutic efficacy in testicular dysfunction within D-galactose and NaNO_(2)mouse *** study aimed to ascertain if BZBS could also mitigate the decline in testicular function associated with natural ***,male aged mice were employed to evaluate the preventive effects of BZBS on male reproductive *** was achieved by assessing sex hormone production,testicular histomorphology,and *** to the untreated aged control group,BZBS administration elevated the levels of sex hormones and spermatocyte populations and preserved normal testicular structure in aged ***,spermatogenesis was *** analyses,including malondialdehyde(MDA)assays and real-time PCR,indicated that BZBS diminished testicular oxidative stress and the inflammatory *** these findings,mice treated with BZBS exhibited reductions in the populations of senescent and apoptotic cells within the seminiferous tubules,suggesting alleviated cellular *** contrast,we observed that rapamycin,a drug known for its longevity benefits,induced excessive testicular apoptosis and did not decrease lipid ***,our results highlight BZBS’s promising clinical potential in counteracting male reproductive aging,underlining its mechanisms of action.

关键词： Traditional Chinese medicine Male reproductive aging Spermatogenic cells Cell senescence Apoptosis

BOUNDARY VALUE PROBLEMS OF CONJUGATE AND GENERALIZED K-HOLOMORPHIC FUNCTIONS IN C^(2)

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Acta Mathematica Scientia 2024年第5期44卷 1837-1852页

作者： Yanyan CUI Chaojun WANG Yonghong XIE Yuying QIAO college of Mathematics and Statistics Zhoukou Normal UniversityZhoukou466001China college of Mathematics and Information Science Hebei Normal UniversityShijiazhuang050024China

In this paper,conjugate k-holomorphic functions and generalized k-holomorphic functions are defined in the two-dimensional complex space,and the corresponding Riemann boundary value problems and the inverse problems are discussed on generalized *** the characteristics of the corresponding functions and boundary properties of the Cauchy type singular integral operators with conjugate k-holomorphic kernels,the general solutions and special solutions of the corresponding boundary value problems are studied in a detailed fashion,and the integral expressions of the solutions are obtained.

关键词： several complex variables k-holomorphic functions partial difference equations polyanalytic functions

Plant cuticles repress organ initiation and development during skotomorphogenesis in Arabidopsis

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Plant Communications 2024年第6期5卷 100-116页

作者： Yuru Ma Wenwen Chang Yongpeng Li Jiahui Xu Yongli Song Xinmiao Yao Lei Wang Yu Sun Lin Guo Hao Zhang Xigang Liu Ministry of Education Key Laboratory of Molecular and Cellular Biology College of Life SciencesHebei Normal UniversityShijiazhuangHebei 050024China Hebei Research Center of the Basic Discipline of Cell Biology College of Life SciencesHebei Normal UniversityShijiazhuangHebei 050024China Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation College of Life SciencesHebei Normal UniversityShijiazhuangHebei 050024China Hebei Key Laboratory of Molecular and Cellular Biology College of Life SciencesHebei Normal UniversityShijiazhuangHebei 050024China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangHebei 050021China

After germination in the dark,plants produce a shoot apical hook and closed cotyledons to protect the quiescent shoot apical meristem(SAM),which is critical for seedling survival during *** factors that coordinate these processes,particularly SAM repression,remain *** cuticles,multilayered structures of lipid components on the outermost surface of the aerial epidermis of all land plants,provide protection against desiccation and external environmental *** and how cuticles regulate plant development are still ***,we demonstrate that mutants of BODYGUARD1(BDG1)and long-chain acyl-CoA synthetase2(LACS2),key genes involved in cutin biosynthesis,produce a short hypocotyl with an opened apical hook and cotyledons in which the SAM is activated during *** signaling represses expression of BDG1 and LACS2,as well as cutin *** analysis revealed that cuticles are critical for skotomorphogenesis,particularly for the development and function of *** and molecular analyses showed that decreased HOOKLESS1 expression results in apical hook opening in the *** hypoxia-induced expression of LITTLE ZIPPER2 at the SAM promotes organ initiation in the mutants,the de-repressed expression of cell-cycle genes and the cytokinin response induce the growth of true *** results reveal previously unrecognized developmental functions of the plant cuticle during skotomorphogenesis and demonstrate a mechanism by which light initiates photomorphogenesis through dynamic regulation of cuticle synthesis to induce coordinated and systemic changes in organ development and growth during the skotomorphogenesis-to-photomorphogenesis transition.

关键词： plant cuticles SAM quiescence organ initiation skotomorphogenesis photomorphogenesis

Stability Analysis of a Class of Nonlinear Fractional Differential Systems With Riemann-Liouville Derivative

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IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1883-1885页

作者： Ruoxun Zhang Shiping Yang Shiwen Feng college of Teacher Education Xingtai UniversityXingtai 054001China college of Physics and Information Engineering Hebei Normal UniversityShijiazhuang 050016China

Dear Editor,This letter investigates the stability of n-dimensional nonlinear fractional differential systems with Riemann-Liouville *** using the Mittag-Leffler function,Laplace transform and the Gronwall-Bellman lemma,one sufficient condition is attained for the asymptotical stability of a class of nonlinear fractional differential systems whose order lies in(0,2).According to this theory,if the nonlinear term satisfies some conditions,then the stability condition for nonlinear fractional differential systems is the same as the ones for corresponding linear *** examples are provided to illustrate the applications of our result.

关键词： Liouville Riemann nonlinear

Automatic detection and assessment of crack development in ultra-high performance concrete in the spatial and Fourier domains

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Frontiers of Structural and Civil Engineering 2024年第3期18卷 350-364页

作者： Jixing CAO Yao ZHANG Haijie HE Weibing PENG Weigang ZHAO Zhiguo YAN Hehua ZHU School of Safety Engineering and Emergency Management Shijiazhuang Tiedao UniversityShijiazhuang 050043China college of Civil Engineering and Architecture Zhejiang UniversityHangzhou 310058China college of Civil and Architectural Engineering Taizhou UniversityTaizhou 318000China college of Civil Engineering and Architecture Zhejiang University of TechnologyHangzhou 310014China Department of Geotechnical Engineering Tongji UniversityShanghai 200092China

Automatic detection and assessment of surface cracks are beneficial for understanding the mechanical performance of ultra-high performance concrete(UHPC).This study detects crack evolution using a novel dynamic mode decomposition(DMD)*** this method,the sparse matrix‘determined’from images is used to reconstruct the foreground that contains cracks,and the global threshold method is adopted to extract the crack *** application of the DMD method to the three-point bending test demonstrates the efficiency in inspecting cracks with high ***,the geometric features,including the area and its projection in two major directions,are evaluated over *** relationship between the geometric properties of cracks and load-displacement curves of UHPC is *** to the irregular shape of cracks in the spatial domain,the cracks are then transformed into the Fourier domain to assess their *** indicate that crack patterns in the Fourier domain exhibit a distinct concentration around a central ***,the power spectral density of cracks exhibits an increasing trend over *** investigation into crack evolution in both the spatial and Fourier domains contributes significantly to elucidating the mechanical behavior of UHPC.

关键词： dynamic mode decomposition ultra-high performance concrete crack detection geometric features Fourier domain