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Photo-degradation organic dyes by Sb-based organic-inorganic hybrid ferroelectrics

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Journal of Environmental Sciences 2021年第3期33卷 145-155页

作者： Yuying wu Zhangran gao Xiaofan Sun Hongling Cai Xiaoshan wu Collaborative Innovation Center of Advanced Microstructures Laboratory of Solid State Microstructures and School of PhysicsNanjing UniversityNanjing 210093China

The organic-inorganic hybrid halide compounds have emerged as one of the most promising photoelectric material for their superior optoelectronic properties and hold great prospects for renewable energy substitutes and environmental protection as ***,we report the optical properties of the Sb-based organic-inorganic hybrid ferroelectric materials:pyridine-4-aminium tetrachloroantimonate((C_(5)H_(7)N_(2))SbCl_(4),sample 1),piperidin-1-aminium tetrachloroantimonate((C_(5)H_(13)N_(2))SbCl_(4),sample 2)and tris(trimethylammonium)nonachlorodiantimonate(((CH_(3))_(3)NH)_(3)Sb_(2)Cl_(9),sample 3),which are a kind of exploited efficient *** 2 and 3 exhibit distinct photoelectric respond,which are mainly ascribed to their minor narrow band-gap compared with sample *** the ferroelectrics,the intrinsic of spontaneous polarization of sample 3 at room temperature is favourable for the separation of photogenerated electrons and holes within the photorespond ***,sample 3 shows the highest efficiency of photo-decomposed Rhodamine B(90.2%within 80 min)and Methyl Orange(MO)(97.4%within 50 min),thanks to the photo-excited electrons and holes promoting the formation of oxidative radical species during the photo-redox *** findings prove that the development of a novel Sbbased organic-inorganic hybrid halide compounds with good stability in the degradation of organic dyes paves a way to designing new photocatalyst.

关键词： Organic-inorganic hybrid halide compounds Photoelectric Photogenerated electrons and holes Photo-degradation

Two-Parameter Block Triangular Splitting Preconditioner for Block Two-by-Two Linear Systems

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Communications on Applied Mathematics and Computation 2023年第4期5卷 1601-1615页

作者： Bo wu Xingbao gao School of Mathematics and Statistics Ningxia UniversityYinchuan750021NingxiaChina School of Mathematics and Statistics Shaanxi Normal UniversityXi’an710062ShaanxiChina

This paper proposes a two-parameter block triangular splitting(TPTS)preconditioner for the general block two-by-two linear *** eigenvalues of the corresponding preconditioned matrix are proved to cluster around 0 or 1 under mild *** limited numerical results show that the TPTS preconditioner is more efficient than the classic block-diagonal and block-triangular preconditioners when applied to the flexible generalized minimal residual(FGMRES)method.

关键词： Block triangular splitting Block two-by-two linear systems Eigenvalues Preconditioner flexible generalized minimal residual(FGMRES)

Highly efficient FexNi1-xOy/CP electrode prepared via simple soaking and heating treatments for electrocatalytic water oxidation

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Journal of Energy Chemistry 2017年第3期26卷 428-432页

作者： Yan gao Fengxia wu Hu Chen State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT-KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology(DUT)Dalian 116024LiaoningChina

The oxygen evolution reaction（OER） is a key step in the overall water splitting process. Numerous electrocatalysts have been developed to lower the overpotential and accelerate the kinetics of the OER. In this work, a simple soaking and heating treatment was used to form a stable and efficient FeNiO/CP electrode. The electrode combined nickel and iron oxides on a commercial carbon paper were used for electrocatalytic water oxidation. The best FeNiO/CP electrode（Ni/Fe = 15/1） displayed a current density of 10 mA/cmat a low overpotential of 290 mV in 0.1 M KOH solution with a Tafel slope of 52 mV/dec.A higher current density of0 mA/cmat the same overpotential and a lower Tafel slope of 43 mV/dec was obtained for this electrode in 1.0 M KOH solution. Excellent durability of the FeNiO/CP electrode in 1.0 M KOH solution was confirmed under a high current density of 136 mA/cmat an overpotential of 340 mV.

关键词： Water splitting Ni–Fe electrode Oxygen evolution reaction Electrocatalysis

Numerical Simulation of Electromagnetic Force in Double-Sided Arc Welding Process

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Journal of Materials Science & Technology 2003年第z1期19卷 223-224页

作者： Hongming gao Lin wu Honggang DONG State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China

Up till now, most of the researchers believe that there are four kinds of forces in the weld pool convection, they aresurface tension, electromagnetic force, buoyancy and gas shear stress. So electromagnetic force is very important,especially when large current is applied. In most of previous models, the electromagnetic force is calculated analytically,in which only the axial component of current is considered. Actually the radial component of current has thesame effect, and may be advanced in some locations. In double-sided arc welding process, instead of the earthclamp, another torch is placed on the opposite side; the current will go from one torch, through the weld zone,to another torch. In this case, the current is more concentrated in the weld zone; the electromagnetic force willhave significant effect compared with conventional welding process. In this paper, a new method of numericalcalculation for electromagnetic force is developed, in which both axial and radial components are considered. And asan example, the distribution of electromagnetic force in double-sided arc welding is calculated. It demonstrates thatthis new method could give more accurate simulation of electromagnetic force, and is close to the actual process.

关键词： Electromagnetic force, Numerical simulation, Double-sided arc welding process

LCD Codes and Self-orthogonal Codes in Finite Dihedral Group Algebras

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Chinese Annals of Mathematics,Series B 2021年第5期42卷 791-800页

作者： Yanyan gao Qin YUE Yansheng wu Department of Mathematics and Physics Nanjing Institute of TechnologyNanjing 211167China State Key Laboratory of Cryptology P.O.Box 5159Beijing 100878China Department of Mathematics Nanjing University of Aeronautics and AstronauticsNanjing 211100China School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing 210023China Shanghai Key Laboratory of TYustworthy Computing East China Normal UniversityShanghai 200062China

Let Fq be a finite field with order q and D2n be the dihedral group with 2n elements, and gcd(q, 2n) = 1. In this article, the authors give precise descriptions and enumerations of linear complementary dual(LCD) codes and self-orthogonal codes in the finite dihedral group algebras Fq[D2n]. Some numerical examples are also presented to illustrate the main results.

关键词： Group algebra Dihedral group LCD codes Self-orthogonal codes

Gut microbiome and nonalcoholic fatty liver disease

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Hepatobiliary & Pancreatic Diseases International 2023年第5期22卷 444-451页

作者： Meng-Yuan wu Jian-gao Fan Xiangya School of Medicine Central South UniversityChangsha 410013China Department of Gastroenterology Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092China Shanghai Key Lab of Pediatric Gastroenterology and Nutrition Shanghai 200092China

Nonalcoholic fatty liver disease(NAFLD)has become the most prevalent chronic liver disease globally and imposed a heavy economic burden on society and *** date,the pathological process of NAFLD is not yet fully *** evidences have demonstrated the pivotal role of gut microbiota in the pathogenesis of NAFLD,and gut dysbiosis has been commonly observed in patients with *** dysbiosis impairs gut permeability,allowing the translocation of bacterial products such as lipopolysaccharides(LPS),short-chain fatty acids(SCFAs),and ethanol to the liver via portal blood *** review aimed to shed light on the underlying mechanisms by which gut microbiota influences the development and progression of *** addition,the potential application of gut microbiome as a non-invasive diagnostic tool and a novel therapeutical target was reviewed.

关键词： Nonalcoholic fatty liver disease Gut microbiome Dysbiosis Intestinal permeability

Applications and challenges of low temperature plasma in pharmaceutical field

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Journal of Pharmaceutical Analysis 2021年第1期11卷 28-36页

作者： Lingge gao Xingmin Shi Xili wu School of Public Health Medical Science CenterXi’an Jiaotong UniversityXi’an710061China Second Affiliated Hospital Xi’an Jiaotong UniversityXi’an710004China

Low temperature plasma(LTP)technology has shown an outstanding application value in the pharmaceutical filed in recent ten *** paper reviews the research advances in LTP,including its effects on enhancing or inhibiting drug activity,its combined use with drugs to treat cancers,its effects on the improvement of drug delivery system,its use in preparation of new inactivated virus vaccines,its use with mass spectrometry for rapid detection of drug quality,and the anti-tumor and sterilization effects of plasma-activated *** paper also analyzes the challenges of LTP in the pharmaceutical filed,hoping to promote related research.

关键词： Low temperature plasma Pharmacy Nanodrug Drug delivery system Plasma-activated liquids

Seismic Hazard Analysis of China's Mainland Based on a New Seismicity Model

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International Journal of Disaster Risk Science 2023年第2期14卷 280-297页

作者： Weijin Xu Jian wu Mengtan gao Institute of Geophysics China Earthquake AdministrationBeijing100081China China Earthquake Disaster Prevention Center Beijing100029China

Based on the seismic source model in the Fifth Generation Seismic Ground Motion Parameters Zonation Map of China(FGSGMPZMC),a new seismic fault model,the new zonation of seismic risk areas(SRAs),and the estimation of seismicity rates for 2021-2030,this study constructed a new time-dependent seismic source model of China’s mainland,and used the probabilistic seismic hazard analysis method to calculate seismic hazard by selecting the ground motion models(GMMs)suitable for seismic sources in *** also provided the probabilities of China’s mainland being affected by earthquakes of modified Mercalli intensity(MMI)Ⅵ,Ⅶ,Ⅷ,Ⅸ,and≥Ⅹin *** spatial pattern of seismic hazards presented in this article is similar to the pattern of the FGSGMPZMC,but shows more *** seismic hazards in this study are higher than those in the FGSGMPZMC in the SRAs and fault zones that can produce large *** indicates that the seismic source model construction in this study is scientific and *** are certain similarities between the results in this study and those of Rong et al.(2020)and Feng et al.(2020),but also disparities for specific sites due to differences in seismic source models,seismicity parameters,and *** results of seismic hazard may serve as parameter input for future seismic risk *** hazard results can also be used as a basis for the formulation of earthquake prevention and mitigation policies for China’s mainland.

关键词： China’s mainland New seismicity model Probabilistic seismic hazard analysis(PSHA) Seismic fault model Seismic risk areas

Hydrothermal synthesis of ultrathin hexagonal nickel hydroxide nanosheets

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Particuology 2015年第5期13卷 114-118页

作者： Hongjie wu Liqiang Gu Guo gao Institute of Automotive Engineering School of Mechanical EngineeringNational Engineering Laboratory for Automotive Electronic Control TechnologyShanghai Jiao Tong University Institute of Nano Biomedicine and Engineering Department of Instrument Science and Technology Key Laboratory for Thin Film and Microfabrication Technology of Ministry of EducationSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong University

Nickel hydroxide, Ni（OH）2 is widely used in electrodes of nickel-based alkaline secondary batteries, Ultrathin hexagonal Ni（OH）2 nanosheets of space group P-3ml were hydrothermally prepared at 200℃ for 10h. Their diameter and thickness were 200-300 and 3-5 nm, respectively, Their formation was attributed to the oriented assembly of growing particles, which was assisted by surfactant molecules. The specific surface area of the Ni（OH）2 nanosheets was 8.66 m2/g. Their magnetization curve exhibited linear paramagnetic behavior across the entire measurement region.

关键词： Ni(OH)2 nanosheets Hydrothermal method PEG-200 Paramagnetic behavior