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Broadband Source Ranging in Shallow Water Using the Ω-Interference Spectrum

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Chinese Physics Letters 2010年第6期27卷 110-113页

作者： Zhao Zhen-Dong wang Ning GAO Da-zhi wang hao-Zhong College of Information Science and Engineering Ocean University of China Qingdao 266100

The concept of the waveguide invariant is revisited and a simple relationship between the range of source and the quasi-period of the acoustic interference spectrum in the frequency domain （Ω-interference spectrum） is derived. Then a method for a broadband source ranging in shallow water using a single receiver and a broadband guide source, requiring no modeling and no knowledge about the ocean environment, is proposed. The method is validated by simulation and verified with the experimental data.

关键词： Methods Broadband Source Ranging Ω-Interference Spectrum

Recent advances on porous organic frameworks for the adsorptive removal of hazardous materials

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Journal of Environmental Sciences 2019年第6期31卷 169-185页

作者： Shi-Wen Lv Jing-Min Liu zhi-hao wang Hui Ma Chun-Yang Li Ning Zhao Shuo wang Tianjin Key Laboratory of Food Science and Health School of Medicine Nankai University College of Environmental Science and Engineering Nankai University

Environmental pollution is one of the most serious problems facing mankind today,and has attracted widespread attention worldwide. The burgeoning class of crystalline porous organic framework materials, metal–organic frameworks and covalent organic frameworks present promising application potential in areas related to pollution control due to their interesting surface properties. In this review, the literature of the past five years on the adsorptive removal of various hazardous materials, mainly including heavy metal ions, harmful gases, organic dyes, pharmaceutical and personal care products, and radionuclides from the environment by using COFs and MOFs, is summarized. The adsorption mechanisms are also discussed to help understand their adsorption performance and selectivity. Additionally, some insightful suggestions are given to enhance the performance of MOFs and COFs in the adsorptive removal of various hazardous materials.

关键词： Metal-organic frameworks Covalent organic frameworks Adsorptive removal Hazardous materials

Synthesis of cerium oxalate hydrate by precipitation technique under external magnetic field

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Rare Metals 2023年第3期42卷 1028-1035页

作者： Jian-Bo Yu zhi-Gang Yang zhi-hao wang Ting-Sheng Tu Zhen-Qiang Zhang Jing-Yun Li Yun-Bo Zhong Zhong-Ming Ren State Key Laboratory of Advanced Special Steels School of Material Science and EngineeringShanghai UniversityShanghai 200072China School of Material Science and Engineering Shijiazhuang Tiedao UniversityShijiazhuang 050043China

Cerium oxalate hydrate particles were synthesized by precipitation technique under external magnetic field with respective intensities of 0,0.1,0.3,and 0.6 *** particle morphologies were investigated by scanning electron microscopy(SEM)and transmission electron microscope(TEM).Results show that external magnetic field has a great influence on the growth behavior of cerium oxalate hydrate ***-like and plate-like cerium oxalate hydrate particles with smaller size are formed without the applying of external magnetic ***,the extremely big rod-like particles with the average size of 12.47μm were prepared under external magnetic field of 0.6 *** increasing magnetic field intensity makes the grain grow *** analysis supports the presence of 8.5 H_(2)O molecules associated with cerium ***,the growth mechanism of cerium oxalate hydrate under external magnetic field was briefly discussed.

关键词： Cerium oxalate hydrate Precipitation technique Magnetic field Grain Growth

Epidemic Spread in Networks Induced by Deactivation Mechanism

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Communications in Theoretical Physics 2008年第5期49卷 1357-1360页

作者： YU Xiao-Ling WU Xiao ZHANG Duan-Ming LI zhi-hao LIANG Fang wang Xiao-Yu Department of Physics Huazhong University of Science and Technology Wuhan 430074 China

We have studied the topology and epidemic spreading behaviors on the networks in which deactivation mechanism and long-rang connection are coexisted. By means of numerical simulation, we find that the clustering coefficient C and the Pearson correlation coefficient r decrease with increasing long-range connection μ and the topological state of the network changes into that of BA model at the end （when μ = 1）. For the Susceptible-Infect-Susceptible model of epidemics, the epidemic threshold can reach maximum value at μ = 0.4 and presents two different variable states around μ= 0.4.

关键词： epidemic threshold deactivation mechanism long-rang connection

Inhibitory Effects of Ginsenoside Rb1 on Apoptosis Caused by HSV-1 in Human Glioma Cells

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Virologica Sinica 2012年第1期27卷 19-25页

作者： Yuan-Yuan Liang Bin wang Dong-Meng Qian Ling Li zhi-hao wang Ming Hu Xu-Xia Song Department of Microbiology Key Laboratory of Medicine and Biotechnology of QingdaoQingdao UniversityQingdao 266071ShandongChina

To investigate the inhibitory effects of Ginsenoside Rbl （GRbl） on apoptosis caused by Herpes Simplex Virus-1 （HSV-1） in Human Glioma Cells （U251）, U251 cells were infected by HSV-1 at a multiplicity of infection of 5 and GRbl, GRbl＋HSV-1, HSV-1 and control groups. MTT and cell apoptosis assays were used to detect the inhibitory effects of GRbl on the apoptosis of U251 cells that caused by HSV-1 infection for various concentrations of drug and virus treatments by MTT assay. We found that in the 400 μg/mL GRb 1 and 400 μg/mL GRbl＋HSV-1 groups, MTT values were higher than control group at all times （P〈0.05）. Moreover, the apoptosis rate in the 400 μg/mL GRbl＋HSV-1 group was lower than the HSV-1 group （P〈0. 05）. These results confirmed that, at appropriate concentrations, GRbl could inhibit nerve cell apoptosis in HSV-1 infections.

关键词： Ginsenoside Rb 1 Herpes Simplex Virus-1 Human Glioma Cells Apoptosis

Sp/sp^(2)carbon ratio-driven high-throughput screening of electrocatalytic nitrogen reduction performance on transition metal single-atom catalysts

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Rare Metals 2024年第11期43卷 5781-5791页

作者： Ze-Xiang Yin Yu-Dan Li Yu-Huan Ye Yuan Liu Mian-Feng Li Zi-Jun Yang Xue-Rong Zheng hao-zhi wang Yang wang Yi-Da Deng State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570100China School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsKey Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)Tianjin UniversityTianjin 300072China

Single-atom catalysts(SACs)have been widely utilized in electrochemical nitrogen reduction reactions(NRR)due to their high atomic utilization and *** to the unique sp/sp^(2)co-hybridization,graphyne materials can offer stable adsorption sites for single metal *** investigate the influence of the sp/sp^(2)hybrid carbon ratio on the electrocatalytic NRR performance of graphyne,a high-throughput screening of 81 catalysts,with27 transition metals loaded on graphyne(GY1),graphdiyne(GY2),and graphtriyne(GY3),was conducted using firstprinciples *** results of the screening revealed that Ti@GY3 exhibits the lowest energy barrier for the rate-determining step(0.32 eV)in ***,to explore the impact of different sp/sp^(2)-hybridized carbon ratios on the catalytic activity of SACs,the mechanism of nitrogen(N_(2))adsorption,activation,and the comprehensive pathway of NRR on Ti@GY1,Ti@GY2,and Ti@GY3 was systematically *** was found that the ratio of sp/sp^(2)-hybridized carbon can significantly modulate the d-band center of the metal,thus affecting the energy barrier of the rate-determining step in NRR,decreasing from Ti@GY1(0.59 eV)to Ti@GY2(0.49 eV);and further to Ti@GY3(0.32 eV).Additionally,the Hall conductance was found to increase with the bias voltage in the range of 0.4-1 V,as calculated by Nanodcal software,demonstrating an improvement in the conductivity of the *** summary,this work provides theoretical guidance for modulating the electrocatalytic nitrogen reduction activity of SACs by varying the ratio of sp/sp^(2)hybrid carbon,with Ti@GY3 showing potential as an excellent NRR catalyst.

关键词： Nitrogen reduction reactions Single-atom catalysts Graphyne Ratio of sp/sp^(2)hybrid carbon High-throughput screening

Case Report:A case of chylothorax treated curatively with Sapylin, a streptococcus preparation

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第12期8卷 885-887页

作者： XU zhi-hao wang Chun-fu ZHANG Yue-qin SHEN Hua-hao XU Feng Department of Respiratory Diseases the Second Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310009 China

Chylothorax is an uncommon disease where fatty fluid accumulates within the chest cavity. Conservative manage- ment, including repeated thoracentesis or pleurodesis, seems to be suitable to most cases. Herein, we present a case of efficacious pleurodesis by intrapleural injection of Sapylin, a streptococcus preparation, for the treatment of chylothorax. A 52-year-old non-smoking female farmer was diagnosed as idiopathic chylothorax after we ruled out possible causes including chest trauma, lymphoma, lung cancer, filariasis, tuberculosis, and etc. Two-time intra-thoracic injection of 3 Klinische Einheit (KE) Sapylin achieved rapid and effective control of chylothorax with no severe side effects. Sapylin may facilitate pleurodesis by producing a strong inflammatory response.

关键词： Chylothorax Sapylin Streptococcus preparation

CD74 and macrophage migration inhibitory factor as therapeutic targets in gastric cancer

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World Journal of Gastroenterology 2012年第18期18卷 2253-2261页

作者： Ying-Xia Zheng Ming Yang Ting-Ting Rong Xiang-Liang Yuan Yan-Hui Ma zhi-hao wang Li-Song Shen Long Cui Department of Laboratory Medicine Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China Department of Anorectal Surgery Xirthua Hospital Shanghai Jiao Tong University＇School of Medicine Shanghai 200092 China

AIM:To investigate the relationship and molecular features of CD74/macrophage migration inhibitory factor(MIF)/Toll-like receptor 4(TLR4) in gastric ***:CD74,MIF and TLR4 expression in the paraffin-embedded sections of gastric cancer from 120 patients were detected by immunohistochemical *** down of CD74 expression in gastric cancer cell line MKN-45 was performed by lentivirus transduction and detected by Western ***-45 cell proliferation assay under the stimulants was measured by the cell counting kit 8(CCK8) assay and MIF concentration in the culture medium was detected by enzymelinked immunosorbent *** staining of CD74 in the MKN-45 cell line under the stimulation of lipopolysaccharide(LPS) was measured by flow ***,CD74 and TLR4 co-localization in the MKN-45 cell line was performed by the ***:CD74,MIF and TLR4 were found to be expressed in gastric cancer and increased significantly in the advanced stage,and were also associated with lymph node *** analysis revealed that CD74 was positively correlated with MIF(r = 0.2367,P < 0.01) and both proteins were also associated with TLR4(r = 0.4414,r = 0.5001,respectively,P < 0.01).LPS can significantly promote MKN-45 cell proliferation(3.027 ± 0.388 vs 4.201 ± 0.092,P < 0.05),induce MIF production(54.333 ± 2.906 pg/mL vs 29.667 ± 3.180 pg/mL,P < 0.01) and cell surface expression of CD74(75.6% ± 4.046%vs 9.4% ± 0.964%,P < 0.01) at LPS concentration of 1 μg/mL compared to medium *** of CD74 or using antiCD74 and MIF antagonist ISO-1 significantly reduced LPS-induced MKN-45 cell proliferation(4.201 ± 0.092 vs 3.337 ± 0.087,4.534 ± 0.222 vs 3.368 ± 0.290,4.058 ± 0.292vs 2.934 ± 0.197,respectively,P < 0.01).MIF,CD74 and TLR4 could co-localize in the MKN-45 cell ***:Upregulation of MIF,CD74 and TLR4 are associated with increasing clinical stage and provide an opportunity as novel gastric cancer chemoprevention

关键词： Gastric cancer CD74 Migration inhibitory factor Toll-like receptors Gastric epithelial cells

Competition between Stepwise Polarization Switching and Chirality Coupling in Ferroelectric GeS Nanotubes

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Chinese Physics Letters 2023年第4期40卷 80-84页

作者：王浩臣王智灏陈宣言魏苏淮朱文光张燮 School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Beijing Computational Science Research Center Beijing 100193China

Ferroelectricity of group-Ⅳ chalcogenides MX(M = Ge,Sn;X = Se,S) monolayers has been extensively ***,how the ferroelectricity evolves in their one-dimensional nanotubes remains largely *** an accurate deep-learning interatomic potential of first-principles precision,we uncover a general stepwise mechanism for polarization switching in zigzag and chiral Ge S nanotubes,which has an energy barrier that is substantially lower than the one associated with the conventional one-step switching *** switching barrier(per atom) gradually decreases with increasing the number of intermediate steps and converges to a value that is almost independent of the tube *** the chiral Ge S nanotubes,the switching path of polarization with chirality coupling is preferred at less intermediate *** study unveils novel ferroelectric switching behaviors in one-dimensional nanotubes,which is critical to coupling ferroelectricity and chirality.

关键词： ferroelectric steps coupling