检索结果-南通市图书馆

Frontiers of physics 2024年第3期19卷 115-133页

作者： Jia-Rui Li Cui jiang Han Su Di Qi Lian-Lian Zhang wei-jiang gong College of Sciences Northeastern UniversityShenyang 110819China Basic Department Shenyang Institute of EngineeringShenyang 110136China

We concentrate on the skin effects and topological properties in the multilayer non-Hermitian Su−Schrieffer−Heeger (SSH) structure, by taking into account the nonreciprocal couplings between the different sublattices in the unit cells. Following the detailed demonstration of the theoretical method, we find that in this system, the skin effects and topological phase transitions induced by nonreciprocal couplings display the apparent parity effect, following the increase of the layer number of this SSH structure. On the one hand, the skin effect is determined by the parity of the layer number of this SSH system, as well as the parity of the band index of the bulk states. On the other hand, for the topological edge modes, such an interesting parity effect can also be observed clearly. Next, when the parameter disorders are taken into account, the zero-energy edge modes in the odd-layer structures tend to be more robust, whereas the other edge modes are easy to be destroyed. In view of these results, it can be ascertained that the findings in this work promote to understand the influences of nonreciprocal couplings on the skin effects and topological properties in the multilayer SSH lattices.

关键词： multilayer SSH lattice nonreciprocal couplings band structure skin effect

Relative phase-dependent two-electron emission dynamics with two-color circularly polarized laser fields

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2020年第9期29卷 281-287页

作者： Tong-Tong Xu Lian-Lian Zhang Zhao Jin wei-jiang gong College of Sciences Northeastern UniversityShenyang 110819China

With the semiclassical ensemble model, we explore the relative phase-dependent nonsequential double ionization (NSDI) of Mg by counter-rotating two-color circularly polarized (TCCP) laser pulses. The yield of Mg2+ sensitively depends on the relative phase Δφ and the intensity of TCCP laser fields. At Δφ=1.5π, the yield of Mg2+ exhibits a pronounced peak in the 0.05 PW/cm2 laser field. This behavior results from the increase of the initial transverse velocity compensating for the drift velocity with the decreasing angle by analyzing the angular distributions of the electron pairs in four relative phases. By changing the relative phases, we find that the recollision excitation with subsequent ionization and the recollision-impact ionization mechanisms can be controlled with TCCP laser fields.

关键词： nonsequential double ionization relative phases two-electron emission dynamics

Suppression of leakage effect of Majorana bound states in the T-shaped quantum-dot structure

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2021年第7期30卷 489-497页

作者： wei-jiang gong Yu-Hang Xue Xiao-Qi Wang Lian-Lian Zhang Guang-Yu Yi College of Sciences Northeastern UniversityShenyang 110819China Basic department Yingkou Institute of TechnologyYingkou 115014China

We theoretically study the transport properties in the T-shaped double-quantum-dot structure,by considering the dot in the main channel to be coupled to the Majorana bound state(MBS)at one end of the topological superconducting *** is found that the side-coupled dot governs the effect of the MBS on the transport *** its level is consistent with the energy zero point,the MBS contributes little to the conductance ***,the linear conductance exhibits notable changes according to the inter-MBS coupling *** the absence of inter-MBS coupling,the linear conductance value keeps equal to e^(2)/2 h when the level of the side-coupled dot departs from the energy zero ***,the linear conductance is always analogous to the MBS-absent case once the inter-MBS coupling comes into *** findings provide new information about the leakage effect of MBSs in quantum-dot structures.

关键词： Majorana bound states quantum dots conductance antiresonance

Inversion of Seabed Geotechnical Properties in the Arctic Chukchi Deep Sea Basin Based on Time Domain Adaptive Search Matching Algorithm

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2024年第4期23卷 933-942页

作者： AN Long XU Chong XING Junhui gong wei jiang Xiaodian XU Haowei LIU Chuang YANG Boxue jiangsu Automation Research Institute Lianyungang 222061China Key Laboratory of Submarine Geosciences and Prospecting Techniques MOE and College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Qingdao Marine Science and Technology CenterQingdao 266071China

The chirp sub-bottom profiler,for its high resolution,easy accessibility and cost-effectiveness,has been widely used in acoustic *** this paper,the acoustic impedance and grain size compositions were obtained based on the chirp sub-bottom profiler data collected in the Chukchi Plateau area during the 11th Arctic Expedition of *** time-domain adaptive search matching algorithm was used and validated on our established theoretical *** misfit between the inversion result and the theoretical model is less than 0.067%.The grain size was calculated according to the empirical relationship between the acoustic impedance and the grain size of the *** average acoustic impedance of sub-seafloor strata is 2.5026×10^(6) kg(s m^(2))^(-1)and the average grain size(θvalue)of the seafloor surface sediment is 7.1498,indicating the predominant occurrence of very fine silt sediment in the study *** of the inversion results and the laboratory measurements of nearby borehole samples shows that they are in general agreement.

关键词： time domain adaptive search matching algorithm acoustic impedance inversion sedimentary grain size Arctic Ocean Chukchi Deep Sea Basin

Highly homogeneous zero-index metamaterials make devices more compact and perform better

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第5期13卷 806-807页

作者： wei-Xiang jiang State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast University210096 NanjingChina

A highly homogeneous microwave zero-index metamaterial based on high-permittivity SrTiO3 ceramics is demonstrated to realize the small-aperture high-directivity *** a novel technique is a remarkable step forward to de... 详细信息

关键词： ceramics SrTiO3 Highly

International law obligations for the disposal of Fukushima nuclear-contaminated water under the principles of nuclear safety

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Population,Resources and Environment 2024年第1期22卷 10-19页

作者： wei gong Law School Southwest UniversityChongqing 400715China

The disposal of contaminated water from Japan’s Fukushima nuclear power plant is a significant international nuclear safety issue with considerable cross-border *** matter requires compliance not only with the law of the sea but also with the principles of nuclear safety under international *** principles serve as the overarching tenet of international and China’s domestic nuclear laws,applicable to nuclear facilities and *** principle of safety in nuclear activities is fully recognized in international and domestic laws,carrying broad legal binding ***’s discharge of nuclear-contaminated water into the sea violates its obligations under the principle of safety in nuclear activities,including commitments to optimum protection,as low as reasonably practicable,and *** Japanese government and the International Atomic Energy Agency(IAEA)have breached the obligation of optimum protection by restricting the scope of assessments,substituting core concepts,and shielding dissenting *** the absence of clear radiation standards,they have acted unilaterally without fulfilling the obligation as low as reasonably practicable *** discharge of Fukushima nuclear-contaminated water poses an imminent and unpredictable risk to all countries worldwide,including Japanese *** and the IAEA should fulfill their obligations under international law regarding disposal,adhering to the principles of nuclear safety,including optimum protection,the obligation as low as reasonably practicable,and prevention through multilateral ***,the obligation to provide optimum protection should be implemented by re-evaluating the most reliable disposal technologies and methods currently available and comprehensively assessing various *** standard of the obligation as low as reasonably practicable requires that the minimization of negative impacts on human health,livelihoods,and the environment should not b

关键词： Principles of nuclear safety Disposal of nuclear-contaminated water Optimum protection Prevention As low as reasonably achievable

Electronic modulation of sprout-shaped NiCoP nanoarrays by N and Ce doping for efficient overall water splitting

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第1期17卷 282-289页

作者： Ting Zhao Guancheng Xu Bingbing gong Jiahui jiang Li Zhang State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830017China College of Chemical Engineering Xinjiang UniversityUrumqi 830017China

Bifunctional catalysts for hydrogen/oxygen evolution reactions(HER/OER)are urgently needed given the bright future of water splitting hydrogen production ***,the self-supporting N and Ce dual-doped NiCoP nanoarrays(denoted N,Ce-NiCoP/NF)grown on Ni foam are successfully *** the N,Ce-NiCoP/NF simultaneously acts as the HER and OER electrodes,the voltages of 1.54 and 2.14 V are obtained for driving 10 and 500 mA·cm^(-2)with a robust durability,and demonstrate its significant potential for practical water *** to both experiments and calculations,the electronic structure of NiCoP may be significantly altered by strategically incorporating N and Ce into the lattice,which in turn optimizes the Gibbs free energy of HER/OER intermediates and speeds up the water splitting ***,the sprout-shaped morphology significantly increases the exposure of active sites and facilitates charge/mass transfer,thereby augmenting catalyst *** study offers a potentially effective approach involving the regulation of anion and cation double doping,as well as architectural engineering,for the purpose of designing and optimizing innovative electrocatalysts.

关键词： transition metal phosphides overall water splitting elements doping nanoarrays

An extended numerical model of the first exothermic peak for three dimensional printed cement-based materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2024年第1期18卷 80-88页

作者： wei jiang Wenqian LI Xi CHEN School of Materials Science and Engineering Tongji UniversityShanghai 200092China School of Civil Engineering Tongji UniversityShanghai 200092China

The first exothermic peak of cement-based material occurs a few minutes after mixing,and the properties of three dimensional(3D)printed concrete,such as setting time,are very sensitive to *** this background,based on the classical Park cement exothermic model of hydration,we propose and construct a numerical model of the first exothermic peak,taking into account the proportions of C_(3)S,C_(3)A and quicklime in *** calculated parameters are calibrated by means of relevant published exothermic test *** is found that this developed model offers a good simulation of the first exothermic peak of hydration for C_(3)S and C_(3)A proportions from 0 to 100% of cement clinker and reflects the effect of quicklime content at 8%-10%.The unique value of this research is provision of an important computational tool for applications that are sensitive to the first exothermic peak of hydration,such as 3D printing.

关键词： 3D printed cement-based materials cement hydration the first exothermic peak liquid quick-setting agent numerical model

Galvanostatic method assembled ZIFs nanostructure as novel nanozyme for the glucose oxidation and biosensing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第9期35卷 279-283页

作者： Erzhuo Cheng Yunyi Li wei Yuan wei gong Yanjun Cai Yuan Gu Yong jiang Yu Chen Jingxi Zhang Guangquan Mo Bin Yang The Fourth Affiliated Hospital of Guangzhou Medical University School of Biomedical EngineeringGuangzhou Medical UniversityGuangzhou 511436China Department of Nephrology First Affiliated Hospital of Jinan UniversityGuangzhou 510630China Department of Oncology Xiangyang Central Hospital of Hubei University of Arts and ScienceXiangyang 441000China

Recently,the composite of soft conductive substrates,such as carbon fiber(CF),with metal-organic frameworks(MOFs)has been employed in a myriad of *** composite material has demonstrated exceptional potential in the realm of electrochemical sensing ***,the rapid growth of MOFs on the surface of CF remains a ***,we propose a simple galvanostatic method as an effective strategy for rapidly growing zeolitic imidazolate frameworks(ZIFs)on CF,and obtain nanocaltrop-like ZIFs modified CF(NC-ZIFs/CF)glucose(Glu)sensor platform with distinctive *** prepared NC-ZIFs/CF demonstrated significant electrocatalytic activity towards the oxidation of Glu in alkaline media,characterized by a pronounced augmentation in oxidation current *** an applied potential of 0.4 V,NC-ZIFs/CF exhibited a remarkably broad detection range(3–30,000μmol/L)and demonstrated outstanding selectivity,repeatability and ***,the NC-ZIFs/CF was efficaciously employed for the detection of blood Glu levels in the serum of both normoglycemic and hyperglycemic patients,obtaining highly reliable *** work demonstrates the feasibility of using galvanostatic method assembly to induce the growth of MOFs on conductive substrates,providing new ideas for electrocatalysis sensors and other electrochemical applications.

关键词： Sensor MOFs Electrocatalytic oxidation Electrochemical assembly Glucose

Predictive model using four ferroptosis-related genes accurately predicts gastric cancer prognosis

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第5期16卷 2018-2037页

作者： Li Wang wei-Hua gong Department of Emergency The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina Department of Surgery The Second Affiliated Hospital Zhejiang University School of MedicineHangzhou 310052Zhejiang ProvinceChina

BACKGROUND Gastric cancer(GC)is a common malignancy of the digestive *** to global 2018 cancer data,GC has the fifth-highest incidence and the thirdhighest fatality rate among malignant *** than 60%of GC are linked to infection with Helicobacter pylori(***),a gram-negative,active,microaerophilic,and helical *** parasite induces GC by producing toxic factors,such as cytotoxin-related gene A,vacuolar cytotoxin A,and outer membrane ***,or iron-dependent programmed cell death,has been linked to GC,although there has been little research on the link between *** infection-related GC and *** To identify coregulated differentially expressed genes among ferroptosis-related genes(FRGs)in GC patients and develop a ferroptosis-related prognostic model with discrimination *** Gene expression profiles of GC patients and those with ***-associated GC were obtained from The Cancer Genome Atlas and Gene Expression Omnibus(GEO)*** FRGs were acquired from the FerrDb database.A ferroptosis-related gene prognostic index(FRGPI)was created using least absolute shrinkage and selection operator–Cox *** predictive ability of the FRGPI was validated in the GEO ***,we verified the expression of the hub genes and the activity of the ferroptosis inducer FIN56 in GC cell lines and *** Four hub genes were identified(NOX4,MTCH1,GABARAPL2,and SLC2A3)and shown to accurately predict GC and ***-associated *** FRGPI based on the hub genes could independently predict GC patient survival;GC patients in the high-risk group had considerably worse overall survival than did those in the low-risk *** FRGPI was a significant predictor of GC prognosis and was strongly correlated with disease ***,the gene expression levels of common immune checkpoint proteins dramatically increased in the highrisk subgroup of the FRGPI *** hub genes were also conf

关键词： Ferroptosis Gastric cancer Helicobacter pylori infection Immune checkpoint protein Prognostic model Ferroptosis-related gene prognostic index