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Journal of Iron and Steel Research(International) 2024年第1期31卷 108-120页

作者： zi-han wang Jing Guo han-jie Guo Bin Li School of Metallurgical Engineering University of Science and Technology BeijingBeijing100083China School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina

A high-temperature reduction roasting method was used to achieve metallic iron and zinc recovery from blast furnace gas ash(BFA).The reduction processes for Zn-containing and Fe-containing oxides were analyzed in detail by using ther-modynamic equilibrium calculation and the principle of minimum free *** results showed that the main reaction in the system is the reduction of ZnFe_(2)_(4)and iron *** the full temperature range,iron oxides were more easily reduced than zinc *** of the amount of CO contained in the system,the reduction of ZnO to Zn was difficult to proceed below the boiling point(906℃)of *** the reduction temperature is below 906℃,the reduction process of zinc ferrate was ZnFe_(2)_(4)→ZnO;when the reduction temperature is above 906℃,its reduction process becomed ZnFe_(2)_(4)→ZnO→Zn(g).The metallization and dezincification rates of the BFA gradually increased with increasing reaction *** the C/O ratio increased,the metallization and dezincification rates first increased and then *** effect of reduction time on BFA reduction was similar to that of reaction temperature.

关键词： Blast furnace gas ash Thermodynamics zinc removal Iron reduction High-temperature reduction roasting Integrated utilization

Molecular mechanism for the unusual enhancement of the second-step chemiluminescence production from the carcinogenic tetrabromohydroquinone and H2O_(2)

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Journal of Environmental Sciences 2024年第7期141卷 330-342页

作者： zi-han wang Chun-Hua Huang Zhi-Sheng Liu Li Mao Ben-Zhan Zhu State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Environment and Resources University of Chinese Academy of SciencesBeijing 100049China

We have found recently that two-step intrinsic hydroxyl radical(·OH)-dependent chemiluminescence(CL)could be produced by carcinogenic tetrahaloquinone and H_(2)O_(2).However,the first-step CL was too fast to clearly detect the stepwise generation of·OH and CL,and to distinguish the exact dividing point between the first-step and second-step *** we found that,extremely clear two-step intrinsic CL could be produced by the relative slow reaction of tetrabromohydroquinone(TBHQ)with H_(2)O_(2),which was directly dependent on the two-step·OH ***,the second-step,but not the first-step CL production of TBHQ/H_(2)O_(2)(CRET donor)was markedly enhanced by fluorescein(a typical xanthene dye,CRET acceptor)through a unique chemiluminescence resonance energy transfer(CRET)*** novel CRET system of TBHQ/H_(2)O_(2)/fluorescein was successfully applied for the sensitive detection of TBHQ with the detection limit as low as 2.5μmol/*** findings will help to develop more sensitive and highly efficient CL or CRET systems and specific CL sensor to detect the carcinogenic haloquinones,which may have broad environmental applications.

关键词： Two-step chemiluminescence Bromohydroquinone Hydrogen peroxide Hydroxyl radical CRET

Molecular solid solution of lanthanide-titanium-oxo clusters with enhanced photocatalytic hydrogen evolution

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Science China Chemistry 2024年第2期67卷 529-535页

作者： Rong Chen Chao-Long Chen Hui Zhang zi-han wang Fu-Li Sun Ming-Hao Du Gui-Lin Zhuang Cheng wang La-Sheng Long Lan-Sun Zheng Xiang-Jian Kong Collaborative Innovation Centre of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China College of Chemical Engineering Zhejiang University of TechnologyHangzhou310032China

Molecular solid solutions of metal clusters containing different metal centers with well-defined structures can accurately regulate the HOMO-LUMO gap,but are rarely ***,a series of colorless lanthanide-titanium-oxo clusters Ln_(2)Ti_4(μ_(2)-O)_(2)(μ_(3)-O)_4(Piv)_(10)(THF)_(2)(Ln_(2)Ti_4,Ln = Eu,Gd,Tb,and Ce,HPiv = pivalic acid) were synthesized by the reaction of pivalic acid with Ln(Ac)_(3) and titanium *** light yellow crystal of cluster solid solutions Eu_(2)Ti_(4-x)Cd_(x),containing a mixture of Eu_(2)Ti_4 and Eu_(2)Ti_(3)Cd,was obtained by in situ doping Cd^(2+) and S^(2–).Eu_(2)Ti_(3.92)Cd_(0.08) displays efficient photocatalytic hydrogen evolution activity without a co-catalyst,which is up to 2.6 times that of Eu_(2)Ti_*** time-resolved transient absorption spectroscopy and spin-polarized density functional calculations showed that the enhanced photocatalytic performance of Eu_(2)Ti_(4-x)Cd_(x) can be attributed to the narrower HOMO-LUMO gap and lower LUMO position than that of Eu_(2)Ti_*** studyprovides an in situ doping method to realize the simple preparation of cluster solid solution.

关键词： molecular solid solution lanthanide-titanium-oxo clusters photocatalytic hydrogen evolution

Atypical Takotsubo cardiomyopathy presenting as acute coronary syndrome:A case report

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World Journal of Clinical Cases 2022年第29期10卷 10772-10778页

作者： zi-han wang Jia-Rong Fan Gao-Yu Zhang Xian-Lun Li Lin Li Beijing University of Chinese Medicine Graduate SchoolBeijing 100029Chaoyang DistrictChina Department of Integrative Cardiology China-Japan Friendship HospitalBeijing 100029Chaoyang DistrictChina

BACKGROUND Takotsubo cardiomyopathy(TS)is a rare acute cardiac disease with clinical features,symptoms,and electrocardiographic manifestations similar to those of acute myocardial *** present the case of a patient with TS caused by a pheochromocytoma,which was confirmed by the postoperative ***,we present the patient’s subsequent management,treatment,and *** SUMMARY A 64-year-old woman was admitted to the hospital with episodic chest pain and palpitations,electrocardiogram(ECG)findings suggestive of high lateral wall myocardial infarction,echocardiogram showing left ventricular wall segmental motion abnormalities,and elevated levels of the myocardial marker *** patient underwent coronary angiography,which revealed unobstructed blood flow without obvious *** their hospitalization,the patient had paroxysmal elevation of blood pressure accompanied by palpitations and profuse sweating,with elevated blood catecholamine levels during *** computerized tomography of the adrenal glands revealed the presence of a nodule in the right adrenal,which was resected and determined to be an adrenal ***,the diagnosis of pheochromocytoma-induced atypical TS was *** patient had an uneventful postoperative *** Cardiologists should consider pheochromocytoma in patients with *** detection allows timely intervention,benefiting patients.

关键词： Takotsubo cardiomyopathy Acute coronary syndromes Pheochromocytoma Diagnose Prognosis Case report

Three-dimensional numerical simulation and earth pressure analysis on double-row piles with consideration of spatial effects

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第10期12卷 758-770页

作者： zi-han wang Jian ZHOU Department of Geotechnical Engineering Tongji University Shanghai 200092 China

As a new kind of technology in retaining structures, the characteristics of double-row piles are significantly affected by spatial effects. In this paper, double-row piles as a retaining structure are simulated numerically in three-dimension by finite element software PLAXIS 3D FOUNDATION. The behavior differences of piles in different positions around the foundation pit are analyzed. By changing the parameters, including the length-width ratio, the excavation depth, the distance between rows and the diameter of piles, the variations of the lateral deformation, the bending moment and the earth pressure around the piles are determined. The reasonable values of parameters and some suggestions with consideration of earth pressure are proposed for the design of double-row piles as a retaining structure. The results show that the lateral deformation and bending moment are the largest in the middle of long side of the foundation pit, which is identified as the most unfavorable position. It is indicated that the earth pressure between rows above pit bottom is close to active earth pressure, while the earth pressure between rows under pit bottom is close to static earth pressure. It is suggested that 1/2-2/3 of pile length, 0.6-1.2 m, 3d-6d, and 2d-2.5d be chosen as embedded depth of piles, diameter of piles, distance between rows, and distance between piles, respectively, where d is the pile diameter.

关键词：双排堆积保留结构空间效果有限元素地球压力

Power-law Distribution and Scale-invariant Structure from the First CHIME/FRB Fast Radio Burst Catalog

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Research in Astronomy and Astrophysics 2023年第2期23卷 42-46页

作者： zi-han wang Yu Sang Xue Zhang Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009.China Shanghai Frontier Science Research Center for Gravitational Wave Detection School of Aeronautics and AstronauticsShanghai Jiao Tong UniversityShanghai 200240China

We study the statistical property of fast radio bursts(FRBs) based on a selected sample of 190 one-off FRBs in the first CHIME/FRB *** power law models are used in the analysis,and we find the cumulative distribution functions of energy can be well fitted by bent power law and thresholded power law *** distribution functions of fluctuations of energy well follow the Tsallis q-Gaussian *** q values in the Tsallis q-Gaussian distribution are constant with small fluctuations for different temporal scale intervals,indicating a scale-invariant structure of the *** earthquakes and soft gamma repeaters show similar properties,which are consistent with the predictions of self-organized criticality systems.

关键词： methods statistical-radio continuum galaxies-catalogs

Microbiota treatment of functional constipation:Current status and future prospects

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World Journal of Hepatology 2024年第5期16卷 776-783页

作者： Yan Li Xiao-han Zhang zi-Kai wang Department of Gastroenterology and Hepatology The First Medical CenterChinese PLA General HospitalBeijing 100853China Medical School Nankai UniversityTianjin 300071China National Clinical Research Center for Geriatric Diseases Chinese PLA General HospitalBeijing 100853China

Functional constipation(FC)is a common disorder that is characterized by diffi-cult stool passage,infrequent bowel movement,or *** is highly prevalent,recurs often,accompanies severe diseases,and affects quality of life;therefore,safe and effective therapy with long-term benefits is urgently *** treatment has potential value for FC *** treatments include modulators such as probiotics,prebiotics,synbiotics,postbiotics,and fecal micro-biota transplantation(FMT).Some probiotics and prebiotics have been adopted,and the efficacy of other microbiota modulators is being *** is con-sidered an emerging field because of its curative effects;nevertheless,substantial work must be performed before clinical implementation.

关键词： Functional constipation Gut microbiota Microbiota modulators Fecal microbiota transplantation Dysbiosis

An Interpolation Method for Karhunen-Loève Expansion of Random Field Discretization

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工程与科学中的计算机建模(英文) 2024年第1期138卷 245-272页

作者： zi han Zhentian Huang Department of Engineering Mechanics Hohai UniversityNanjing211100China College of Civil and Transportation Engineering Shenzhen UniversityGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and UtilizationInstitute of Deep Earth Sciences and Green EnergyShenzhenChina

In the context of global mean square error concerning the number of random variables in the representation,the Karhunen–Loève(KL)expansion is the optimal series expansion method for random field *** computational efficiency and accuracy of the KL expansion are contingent upon the accurate resolution of the Fredholm integral eigenvalue problem(IEVP).The paper proposes an interpolation method based on different interpolation basis functions such as moving least squares(MLS),least squares(LS),and finite element method(FEM)to solve the *** with the Galerkin method based on finite element or Legendre polynomials,the main advantage of the interpolation method is that,in the calculation of eigenvalues and eigenfunctions in one-dimensional random fields,the integral matrix containing covariance function only requires a single integral,which is less than a two-folded integral by the Galerkin *** effectiveness and computational efficiency of the proposed interpolation method are verified through various one-dimensional ***,based on theKL expansion and polynomial chaos expansion,the stochastic analysis of two-dimensional regular and irregular domains is conducted,and the basis function of the extended finite element method(XFEM)is introduced as the interpolation basis function in two-dimensional irregular domains to solve the IEVP.

关键词： Random field discretization KL expansion IEVP MLS FEM stochastic analysis

Eosinophilic fasciitis difficult to differentiate from scleroderma:A case report

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World Journal of Clinical Cases 2023年第13期11卷 3092-3098页

作者： Tian-Yi Lan zi-han wang Wei-Ping Kong Jin-Ping wang Nan Zhang Di-Er Jin Jing Luo Qing-Wen Tao Ze-Ran Yan Graduate College Beijing University of Chinese MedicineBeijing 100029China Traditional Chinese Medicine Department of Rheumatism China-Japan Friendship HospitalBeijing 100029China

BACKGROUND Eosinophilic fasciitis(EF)is a rare connective tissue disease that can cause swelling and sclerosis of the extremities,and special attention is needed to differentiate EF from systemic *** or omission markedly delays treatment of EF,and severe skin sclerosis in advanced stages can cause joint contracture and tendon retraction,worsening the patient's prognosis and quality of *** SUMMARY We report a case of EF in a young woman diagnosed by tissue biopsy,confirming the difficulty of differential diagnosis with *** Focusing on skin manifestations,completing tissue biopsy and radiography can help diagnose EF *** should enhance their understanding of the differences between EF and scleroderma,and early diagnosis and standardized treatment can improve the prognosis of patients with EF.

关键词： Eosinophilic fasciitis Scleroderma Biopsy Diagnose Prognosis Case report

A Fluorine-Functionalized 3D Covalent Organic Framework with Entangled 2D Layers

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CHINESE JOURNAL OF POLYMER SCIENCE 2024年第8期42卷 1210-1216页

作者： Xiao, Li-Bang Wu, zi-han Xin, Jun-Jie Cheng, Yuan-Peng Gui, Bo Sun, Jun-Liang wang, Cheng Wuhan Univ Coll Chem & Mol Sci Wuhan 430072 Peoples R China Peking Univ Coll Chem & Mol Engn Beijing Natl Lab Mol Sci Beijing 100871 Peoples R China

Constructing three dimensional (3D) covalent organic frameworks (COFs) through the entanglement of two dimensional (2D) nets is a promising but underdeveloped strategy. Herein, we report the design and synthesis of a fluorine functionalized 3D COF (3D-An-COF-F) formed by entangled 2D sql nets. The structure of 3D-An-COF-F was determined by the combination of continuous rotation electron diffraction technique and modelling based on the chemical information from real space. Interestingly, compared to the isostructural 3D-An-COF without F atoms, 3D-An-COF-F showed an improved CO2 sorption ability and higher CO2/N-2 selectivity. Our study not only demonstrated the generality of constructing 3D COFs with entangled 2D nets by introducing bulky groups vertically in planar building blocks, but also will expand the diversity of 3D COFs for various applications.

关键词： 3D covalent organic frameworks Fluorine Entangled 2D layers Electron diffraction CO2 adsorption TOPOLOGY HYDROGEN DESIGN