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Engineering FeOOH/Ni(OH)_(2) heterostructures on Ni_(3)S_(2)surface to enhance seawater splitting

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Rare Metals 2024年第5期43卷 1989-1998页

作者： Chen yang ya-Dong Li Li-juan Cao Xi-Long Wang Han-Pu Liang Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China

The construction of highly stable and efficient electrocatalysts is desirable for seawater splitting but remains challenging due to the high concentration of Cl-in ***,FeOOH/Ni(OH)_(2)heterostructure supported on Ni_(3)S_(2)-covered nickel foam(Fe–Ni/Ni_(3)S_(2)/NF)was fabricated by hydrothermal and etching methods,as well as anodic oxidation *** electronic structure of FeOOH and Ni(OH)_(2)could be modulated after depositing FeOOH nanoparticles on Ni(OH)_(2)nanosheet,which greatly boosted the catalytic *** the catalyst used as an electrode for oxygen evolution reaction(OER),it needed low overpotentials of 266 and 368 m V to achieve current densities of 100 and 800 m A·cm^(-2),respectively,in 1 mol·L^(-1)KOH+seawater *** can operate continuously at 100 m A·cm^(-2)for 400 h without obvious ***,in situ generated SO_(4)^(2-)from inner Ni_(3)S_(2)during electrolysis process would accumulate on the surface of active sites to form passivation layers to repel Cl^(-),which seemed to be responsible for superior *** study not only synthesizes an OER catalyst for highly selective and stable seawater splitting,but also gives a novel approach for industrial hydrogen production.

关键词： Anodic oxidation Heterostructure Oxygen evolution reaction Seawater splitting

The pharmacology, toxicology and therapeutic potential of anthraquinone derivative emodin

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Chinese Journal of Natural Medicines 2020年第6期18卷 425-435页

作者： CUI ya CHEN Liu-Jing HUANG Tu YING Jian-Qiong LI juan State Key laboratory of Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Department of orthodontics West China School of Stomatology Sichuan UniversityChengdu 610041China West China Hospital of Clinical Medicine Sichuan UniversityChengdu 610041China

Emodin(1, 3, 8-trihydroxy-6-methylanthraquinone) is a derived anthraquinone compound extracted from roots and barks of pharmaceutical plants, including Rheum palmatum, Aloe vera, Giant knotweed, Polygonum multiflorum and Polygonum cuspidatum. The review aims to provide a scientific summary of emodin in pharmacological activities and toxicity in order to identify the therapeutic potential for its use in human specific organs as a new medicine. Based on the fundamental properties, such as anticancer, anti-inflammatory, antioxidant, antibacterial, antivirs, anti-diabetes, immunosuppressive and osteogenesis promotion, emodin is expected to become an effective preventive and therapeutic drug of cancer, myocardial infarction, atherosclerosis, diabetes, acute pancreatitis, asthma, periodontitis, fatty livers and neurodegenerative diseases. This article intends to provide a novel insight for further development of emodin, hoping to reveal the potential of emodin and necessity of further studies in this field.

关键词： Emodin Pharmacological activities Toxicity Therapeutic potential

An unprecedented dumbbell-shaped pentadeca-nuclear W-Er heterometal cluster stabilizing nanoscale hexameric arsenotungstate aggregate and electrochemical sensing properties of its conductive hybrid film-modified electrode

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Nano Research 2022年第4期15卷 3628-3637页

作者： Dan Wang Jun Jiang Meng-ya Cao Sai-Sai Xie ya-Min Li Li-juan Chen Jun-Wei Zhao Guo-Yu yang Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Chemical EngineeringHenan UniversityKaifeng 475004China MOE Key Laboratory of Cluster Science School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

Cluster-based functional materials have made remarkable progress owing to their wonderful structures and distinctive physicochemical performances,one of on-going advancements of which is basically driven by synthetic chemistry of exploring and constructing novel nanosized gigantic polyoxometalate(POM)*** this article,an unprecedented nanoscale hexameric arsenotungstate aggregate Na_(9)K_(16)H_(4)[Er_(0.5)K_(0.5)(H_(2)O)_(7)][Er_(5)W10O_(2)6(H_(2)O)_(14)][B-α-AsW_(9)O_(33)]_(6)·102H_(2)O(1)has been synthesized by the combined synthetic strategy of simultaneously using the arsenotungstate precursor and simple tungstate material in a highly acidic aqueous ***{[Er_(5)W_(10)O_(26)(H_(2)O)_(14)][B-α-AsW_(9)O_(33)]6}31-polyanion in 1 consists of an intriguing dumbbell-shaped pentadeca-nuclear W-Er heterometal{Er_(5)W10O_(2)6(H_(2)O)_(14)}^(23+)cluster connecting six trilacunary[B-α-AsW_(9)O_(33)]^(9-)moieties,which has never been seen ***,through electropolymerization of 1 and pyrrole on the conductive substrate,a thickness-controllable and robust 1-PPY(PPY=polypyrrole)hybrid film was successfully prepared,which represents the first POM-PPY film assembled from high-nuclear lanthanide(Ln)encapsulated POM and PPY *** 1-PPY film-based electrochemical biosensor exhibits a favorable recognition performance for ochratoxin A in multiple *** work not only provides a feasible combined synthetic strategy of the POM precursor and simple tungstate material for constructing complicated multi-Ln-inserted POM aggregates,but also offers a promising electrochemical platform constructed from POM-based conductive films for identifying trace biomolecules in complex environments.

关键词： polyoxometalate lanthanide-inserted arsenotungstate polyoxometalate-based conductive film

Fault-Tolerant Hamiltonicity and Hamiltonian Connectivity of BCube with Various Faulty Elements

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Journal of Computer Science & Technology 2020年第5期35卷 1064-1083页

作者： Gui-juan Wang Cheng-Kuan Lin Jian-Xi Fan Jing-ya Zhou Bao-Lei Cheng School of Computer Science and Technology Soochow UniversitySuzhou 215006China School of Computer Science and Technology Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China College of Mathematics and Computer Science Fuzhou UniversityFuzhou 350108China

BCube is one kind of important data center *** and Hamiltonian connectivity have significant applications in communication *** far,there have been many results concerning fault-tolerant Hamiltonicity and fault-tolerant Hamiltonian connectivity in some data center ***,these results only consider faulty edges and faulty *** this paper,we study the fault-tolerant Hamiltonicity and the fault-tolerant Hamiltonian connectivity of BCube(n,k)under considering faulty servers,faulty links/edges,and faulty *** any integers n≥2 and k≥0,let BCn,k be the logic structure of BCube(n,k)and F be the union of faulty elements of BCn,k,Let fv/fe,and fs be the number of faulty servers,faulty edges,and faulty switches of BCiLbe(n,k),*** show that BCnik-F is fault-tolerant Hamiltonian if fv+fe+(n-1)/s≤(n-1)(k+1)-2 and BCn,k-F is fault-tolerant Hamiltonian-connected ifv,+fe+(n-1)fs≤(n-1)(k+1)-*** the best of our knowledge,this paper is the first work which takes faulty switches into account to study the fault-tolerant Hamiltonicity and the fault-tolerant Hamiltonian connectivity in data center networks.

关键词： data center network BCube fault-tolerance Hamiltonicity Hamiltonian connectivity

Intradural osteomas:Report of two cases

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World Journal of Clinical Cases 2021年第8期9卷 1863-1870页

作者： Li Li Guang-Yu Ying ya-juan Tang Hemmings Wu Department of Neurosurgery The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009Zhejiang ProvinceChina

BACKGROUND Intradural osteoma is very rarely located in the subdural or subarachnoid ***,intradural osteoma lacks specificity in clinical manifestations and imaging features and there is currently no consensus on its diagnosis method or treatment ***,the pathogenesis of osteoma without skull structure involvement remains *** SUMMARY We describe two cases of intradural osteomas located in the subdural and subarachnoid spaces,*** first case involved a 47-year-old woman who presented with a 3-year history of intermittent headache and ***,a bony hard mass was found in the left frontal area,attached to the inner surface of the dura mater and compressing the underlying arachnoid membrane and *** second case involved a 56-year-old woman who had an intracranial high-density lesion isolated under the right greater wing of the ***,an arachnoid-covered bony tumor was found in the sylvian *** pathological diagnosis for both patients was *** Surgery and pathological examination are required for diagnosis of intradural osteomas,and craniotomy is a safe and effective treatment.

关键词： Osteoma Intradural Craniotomy Pathogenesis Neural crest cell Case report

Livelihood changes and evolution of upland ethnic communities driven by tourism:a case study in Guizhou Province,southwest China

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Journal of Mountain Science 2016年第7期13卷 1313-1332页

作者： LI ya-juan VV Hu CHEN Tian HU Jing CUI Hai-yang The College of Urban&Environmental Sciences Central China Normal UniversityWuhan 430079China Wuhan Branch of China Tourism Academy Wuhan 430079China Institute of Geographic Sciences and Natural Resources Research University of Chinese Academy of SciencesBeijing 100101China ASEAN(Association of Southeast Asian Nations)Research Center Guizhou UniversityGuiyang 550025China

As an effective livelihood approach to alleviate poverty without rural population migration, ethnic tourism has become the primary choice of economic development in ethnic areas worldwide in addition to traditional livelihood approaches. This article applies the theories of livelihood to study the community evolution driven by tourism livelihood and examine three mountainous tourism communities in different stages of tourist area life cycle. Drawing on the methods of GIS spatial analysis, semi-structured interviews and questionnaires, this article proposes a sustainable livelihood framework for ethnic tourism to explore the evolution of ethnic tourism communities by identifying changes in livelihood assets(natural, financial, social, cultural and human capitals) in the process of tourism development. The results show that the development of ethnic tourism has led to changes in the increase of building land, and the diversification of land use functions with a trend of shifting from meeting local villagers' living needs to satisfying tourists, income composition and uneven distribution of tourism income spatially. Ethnic tourism also led to the deterioration of traditional social management structure, collapse of neighboring relationship, the over- commercialization and staged authenticity of ethnic culture, as well as the gradual vanish of agricultural knowledge with a trend of increasing modern business knowledge and higher education. In addition, these changes, involving livelihood assets from natural, economic, human, social and cultural aspects are interrelated and interactive, which form new evolution characters of ethnic community. This study reveals the conflicts over livelihood approaches which have formed new vulnerabilities to impact on sustainable evolution of ethnic communities. This research provides implications for achieving the sustainable development of ethnic communities with the driving force of tourism livelihood.

关键词： Community evolution Tourism livelihood Livelihood assets Ethnic tourism Guizhou

Optimization of Wind Farm Collection Line Structure under Symmetrical Grid Fault

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Chinese Journal of Electrical Engineering 2019年第3期5卷 49-58页

作者： Huan Jin Xueyi Zhang yang Zhang Qianghui Xiao juan Li ya Liu Hunan University of Technology Zhuzhou 412007China

A power-transmission collection line is connected to each wind turbine of a wind farm and then connected to the incoming switchgear at the low-voltage side of the booster station at a certain ***,the grouping of the wind turbines in the wind farm determines the layout of the lines and affects the line *** line structure and composition of the wind farm are analyzed,and the relationship between the impedance of the collection line and reactive power generated by the wind turbine at low-voltage ride through is *** conclude that the smaller the equivalent impedance of the wind farm collection line structure is,the greater the reactive power at the wind farm collection line point *** addition,the economic aspect of the collection line needs to be considered in the *** economic aspect and impedance values have contrasting ***,according to the condition of minimum impedance and optimized economic aspect,an optimization model of a wind-farm collector-circuit structure is *** optimal structure of the wind farm collector circuit is calculated using the Monte Carlo method,and the theoretical analysis is verified by simulation.

关键词： Wind farm symmetrical grid fault collection line optimization model

Darboux Transformation and Grammian Solutions for Nonisospectral Modified Kadomtsev-Petviashvili Equation with Symbolic Computation

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Communications in Theoretical Physics 2008年第8期50卷 411-416页

作者： LI juan FIAN Bo ZHANG Hai-Qiang XU Tao ZHANG ya-Xing School of Science P.O. Box 122 Beijing University of Posts and Telecommunications Beijing 100876 China State Key Laboratory of Software Development Environment Beijing University of Aeronautics and Astronautics Beijing 100083 China Key Laboratory of Optical Communication and Lightwave Technologies Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

In the present paper, under investigation is a nonisospectral modified Kadomtsev-Petviashvili equation, which is shown to have two Painleve branches through the Painleve analysis. With symbolic computation, two Lax pairs for such an equation are derived by applying the generalized singular manifold method. Furthermore, based on the two obtained Lax pairs, the binary Darboux transformation is constructed and then the N-th-iterated potential transformation formula in the form of Grammian is also presented.

关键词： nonisospectral modified Kadomtsev-Petviashvili equation Darboux transformation Grammiansolution symbolic computation

Carbamylated Erythropoietin Alleviates Kidney Damage in Diabetic Rats by Suppressing Oxidative Stress

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Current Medical Science 2021年第3期41卷 513-521页

作者： Jian-zhong DANG ya-fang TU juan WANG Ying-jie yaNG Department of Geriatrics Rerunin Hospital of Wuhan UniversityWuhan 430060China Department of Nephrology Renmin Hospital of Wuhan UniversityWuhan 430060China

The oxidative stress response plays an important role in the occurrence and development of diabetic kidney disease(DKD).It has become a new treatment target for *** the current study,the effects of carbamylated erythropoietin(CEPO)on renal oxidative stress and damage in diabetic rats were *** Sprague Dawley rats were intraperitoneally administered with 60 mg/kg streptozotocin to establish the diabetes *** diabetic rats were randomly allocated into 4 groups(n=6 each):diabetes model group(DM group),DM+CEPO treatment group(DC group),DM+CEPO+EPO receptor(EPOR)blocking peptide treatment group(DCEB group),and DM+CEPO+CD131 blocking peptide treatment group(DCCB group).Meanwhile,a normal control group(NC group,n=6)was set *** tissues and blood samples were obtained for evaluation of oxidative stress and renal *** results showed that diabetic rats exhibited increased oxidative stress in the kidney and early pathological changes associated with *** with CEPO reduced oxidative stress and attenuated renal ***,diabetic rats treated with the combination of CEPO and EPOR blocking peptide or CD131 blocking peptide showed increased oxidative stress and reduced renal function when compared with CEPO treatment alone *** results suggested that CEPO can protect against kidney damage in DKD by inhibiting oxidative stress injury via EPOR-CD131 heterodimers.

关键词： diabetic kidney disease oxidative stress carbamylated erythropoietin erythropoietin receptor