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Probing the Bardeen-Kiselev black hole with the cosmological constant caused by Einstein equations coupled with nonlinear electrodynamics using quasinormal modes and greybody bounds

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Communications in Theoretical Physics 2024年第6期76卷 102-119页

作者： S R Wu B Q Wang Z W long College of Physics Guizhou UniversityGuiyang 550025China College Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this work,we investigate a static and spherically symmetric Bardeen-Kiselev black hole(BH)with the cosmological constant,which is a solution of the Einstein-non-linear Maxwell field *** compute the quasinormal frequencies for the Bardeen-Kiselev BH with the cosmological constant due to electromagnetic and gravitational *** varying the BH parameters,we discuss the behavior of both real and imaginary parts of the BH quasinormal frequencies and compare these frequencies with the Reissner-Nordström-de Sitter BH surrounded by quintessence(RN-dSQ).Interestingly,it is shown that the responses of the Bardeen-Kiselev BH with the cosmological constant and the RN-dSQ under electromagnetic perturbations are different when the charge parameter q,the state parameter w and the normalization factor c are varied;however,for the gravitational perturbations,the responses of the Bardeen-Kiselev BH with the cosmological constant and the RN-dSQ are different only when the charge parameter q is ***,compared with the gravitational perturbations,the electromagnetic perturbations can be used to understand nonlinear and linear electromagnetic fields in curved spacetime *** interesting observation is that,due to the presence of Kiselev quintessence,the electromagnetic perturbations around the Bardeen-Kiselev BH with the cosmological constant damps faster and oscillates slowly;for the gravitational perturbations,the quasinormal mode decays slowly and oscillates *** also study the reflection and transmission coefficients along with the absorption cross section in the Bardeen-Kiselev BH with the cosmological constant;it is shown that the transmission coefficients will increase due to the presence of Kiselev quintessence.

关键词： quasinormal modes greybody factors Bardeen-Kiselev black hole with cosmological constant

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Effect of Carbon Content on Stacking Fault Energy of Fe-20Mn-3Cu TWIP Steel

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Journal of Iron and Steel Research International 2014年第1期21卷 116-120页

作者： Xian PENG Ding-yi ZHU Zhen-ming HU Ming-jie WANG long-long LIU Hai-jun LIU College of Materials Science and Engineering Fuzhou University Chengdu Aircraft Industrial(Group)Co. Ltd.AVIC Fujian San Ming Iron and Steel Group Co. Ltd. College of Materials Science and Engineering Fujian University of Technology

The influence of carbon content on the stacking fault energy （SFE） of Fe-20Mn-3Cu twinning-induced plasticity （TWIP） steel was investigated by means of X-ray diffraction peak-shift method and thermodynamic modeling. The experimental result indicated that the stacking fault probability decreases with increasing carbon addition, the SFE increases linearly when the carbon content in mass percent is between 0.23 M and 1.41%. The thermody namic calculation results showed that the SFE varied from 22.40 to 29.64 mJ ~ m 2 when the carbon content in mass percent changes from 0.23 % to 1.41%. The XRD analysis revealed that all steels were fully austenitic before and after deformation, which suggested that TWIP effect is the predominant mechanism during the tensile deformation process of Fe-20Mn-3Cu-XC steels.

关键词： stacking fault energy carbon content peak-shift method thermodynamic modeling TWIP steel

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Male non-coding RNA genes identified by comparative genomic analysis of the Drosophila genomes

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Chinese Science Bulletin 2007年第6期52卷 721-724页

作者： long ManYuan ZHU ZuoYan Department of Ecology and Evolution The University of Chicago Chicago IL 60637 USA College of Life Sciences Peking University Beijing 100871 China

这个问题由杨等出版了一篇研究文章。北京大学“在在果蝇的密切相关的种类之中的性相关的非编码的 RNA 表示模式的重要分叉”。在 D 的 genomic 分析。melanogaster 和它的近亲， ***， D。yakuba 和另外的相关种类， D。pseudoobscura ... 详细信息

这个问题由杨等出版了一篇研究文章。北京大学“在在果蝇的密切相关的种类之中的性相关的非编码的 RNA 表示模式的重要分叉”。在 D 的 genomic 分析。melanogaster 和它的近亲， ***， D。yakuba 和另外的相关种类， D。pseudoobscura 和 D。virillis，杨 et *** 一打性腺 --( 主要睾丸 --) 表示非编码的 RNA (ncRNA ) 基因。这些 ncRNA 基因在这些显示出分叉的表示模式，这被揭示种类。在学习使用的简单方法能高效地从大量有机体在一组密切相关的种被用于 ncRNA 基因的察觉。这个评价不在这篇论文详细重申实验和解释。相反，我们将在生物学的理解和性复制的进化在相关结果的意义的讨论提出我们的强调。我们将在 ncRNA 基因的区域的开发和教育讨论这个工作的一般意义。

关键词：雄性果蝇比较基因组分析非编码RNA基因基因鉴定

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Association between cadherin-17 expression and pathological characteristics of gastric cancer:A meta-analysis

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World Journal of Gastroenterology 2015年第12期21卷 3694-3705页

作者： Zi-Wen long Meng-long Zhou jing-Wei Fu Xian-Qun Chu Ya-Nong Wang Department of Gastric Cancer and Soft-tissue Sarcoma Surgery Fudan University Shanghai Cancer Center Department of Oncology Shanghai Medical College Fudan University

AIM: To construct a meta-analysis in order to examine the relationship between cadherin-17(CDH17) andgastric cancer(GC). METHODS: Related articles were selected by searching the following English or Chinese electronic databases: CINAHL, MEDLINE, Science Citation Index, the Chinese Journal Full-Text, and the Weipu Journal. NewcastleOttawa Scale(NOS) criteria were used to ensure consistency in reviewing and reporting results. Statistical analyses were conducted with Version 12.0 STATA statistical ***: Ultimately, 11 articles, with a total of 2,120 GC patients, were found to be eligible for study inclusion. In comparisons of GC patients by TNM stage(Ⅲ-Ⅳ vs ?Ⅰ-Ⅱ: OR = 2.35, 95%CI: 1.15-4.825, P = 0.019), histologic grade(3-4 vs 1-2: OR = 3.48, 95%CI: 1.36-8.92, P = 0.009), invasion grade(T3-4 vs T1-2: OR = 2.86; 95%CI: 1.69-4.83; P = 0.000), and lymph node metastasis(positive vs negative: OR = 2.64; 95%CI: 1.33-5.27; P = 0.006), it was found that CDH17 showed more positive expressions in each of the more severe cases. Country-stratified analyses from all four experimental subgroups showed that high CDH17 expression levels may be related to GC among Chinese and Korean populations(all P < 0.05), with the exception of the invasion grade T3-4 vs T1-2 comparison, where the relation only held among the Chinese population(OR = 2.86, 95%CI: 1.69-4.83, P = 0.000). CONCLUSION: Collectively, the data reflects the capacity of CDH17 in tumor proliferation and metastasis among GC patients.

关键词： Cadherin 17 Protein expression Gastric cancer Meta

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Gold-catalyzed intermolecular reaction of ynamides with 3-indolyl azides via an unexpected 1,2-alkyl migration

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Science Bulletin 2017年第17期62卷 1201-1206页

作者： Bo Zhou Ying-Qi Zhang Xin Liu long-Wu Ye State Key Laboratory of Physical Chemistry of Solid Surfaces and The Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical EngineeringXiamen University State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences

A gold-catalyzed intermolecular reaction of ynamides with 3-indolyl azides via the presumable α-imino gold carbenes has been developed, providing an alternative and efficient way for the synthesis of valuable 3-amino-β-carbolines in generally good to excellent yields. Importantly, this new protocol involves an unexpected 1,2-alkyl migration pathway.

关键词： Gold Heterocycles Migration Cyclization Tandem reaction

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A fast and in-depth self-reconstruction of anion ligands optimized CoFe-based pre-catalysts for water oxidation

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Green Energy & Environment 2023年第3期8卷 812-819页

作者： Qiuyan jin Hao Cui Chengxin Wang School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesKey Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yat-sen UniversityGuangzhou510275China

The design of efficient and robust non-precious metal electrocatalysts towards oxygen evolution reaction(OER)is of great value for developing green energy *** in-situ formed high-valence(oxy)hydroxides species during the reconstruction process of pre-catalysts are recognized as the real contributing sites for ***,pre-catalysts generally undergo a slow and inadequate ***,we reported a PO^(3-)_(4)optimized CoFe-based OER catalysts with amorphous structure,which enables a fast and deep reconstruction during the OER *** amorphous structure induced by ligands PO^(3-)_(4)is prone to evolution and further form active species for *** electron interaction between metal sites can be modulated by electron-rich PO^(3-)_(4),which promotes generation of high active ***,the etching of PO^(3-)_(4)from the pre-catalysts during the catalytic process is in favor of accelerating the *** a result,as-prepared precatalyst can generate high active CoOOH at a low potential of 1.4 V and achieve an in-depth reconstructed nanosheet structure with abundant OER active *** work provides a promising design of pre-catalysts for realizing efficient catalysis of water oxidation.

关键词： Oxygen evolution reaction Pre-catalysts Reconstruction Anion ligands Bimetallic catalysts

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Review on Tidal Energy Technologies and Research Subjects

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China Ocean Engineering 2020年第1期34卷 137-150页

作者： Chul Hee JO Su jin HWANG Department of Naval Architecture and Ocean Engineering Inha University

Tidal current power is one of the promising and reliable renewable energies with the advantage of continuous and predictable resource. It can make stable electricity regardless of weather conditions or seasons all year around. The required technologies for tidal current power in the ocean have been developed for years and now recognized that it could be commercialized after intensive field tests and successful demonstrations. There are several tidal farm development projects in the world, such as the MeyGen project in UK with its commercialization at hand. However, various research subjects in the tidal current energy field are seeking improvements and industrialization of tidal current power in terms of economy and technical reliability. This paper introduces the resource assessment procedure of tidal energy that has been applied in Korea coastal regions. The key research subjects for tidal current power together with the interaction effect of multi-arrangement is described. Also, this paper is to introduce the research output of each subject such as turbine design, experimental validation, turbine interaction and wake, multi-array module, FSI (fluid-structure interaction), and duct application.

关键词： tidal current power resource assessment turbine design experimental validation turbine interaction multi arrangement FSI(fluid-structure interaction)

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Promotion Mechanism of H2O for Stereoselectivity in Pd(Ⅱ)-catalyzed C—H Aryiation of Diarylphosphinamides with Arylboronic Acids

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Chemical Research in Chinese Universities 2020年第5期36卷 843-846页

作者： CAI Yanchun JIAO long QIU Xuepcng DU Zhijun Polymer Composites Engineering laboratory Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China

On the basis of a series of control experiments and nuclear magnetic resonance analyses,it is discovered that Boc-protected amino acid ligand coordinated to Pd center is partly replaced by N,N-dimethylformamide,and H2O can inhibit coordination of N,N-dimethylformamide to Pd *** novel action mechanism perfectly explains H2O promotion for stereoselectivity in Pd(II)-catalyzed C—H aryiation of diarylphosphinamides with arylboronic acids.

关键词： C-H activation Stereoselectivity Water Ligand exchange

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Biocompatibility of marine magnetotactic ovoid strain MO-1 for in vivo application

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Journal of Oceanology and Limnology 2021年第6期39卷 2107-2115页

作者： Changyou CHEN Pingping WANG long-Fei WU Tao SONG Beijing Key Laboratory of Bioelectromagnetism Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190China France-China Joint Laboratory for Evolution and Development of Magnetotactic Multicellular Organisms Chinese Academy of SciencesBeijing 100029China Aix Marseille University CNRSLCBMarseille F-13402France University of the Chinese Academy of Sciences Beijing 100049China

Magnetotactic bacteria are capable of biosynthesizing magnetic nanoparticles,also called magnetosomes,and swimming along magnetic field *** abilities endow the whole cells of magnetotactic bacteria with such applications as targeted therapy and manipulation of *** have shown that the intact marine magnetotactic bacteria MO-1 kill efficiently antibiotic-resistant pathogen Staphylococcus aureus in vivo,but the biocompatibility of this marine bacterium is *** this study,the strain MO-1 was chosen to analyze its biocompatibility and potential for biomedicine *** showed that MO-1 cells could be guided at 37℃ under an external magnetic field and swim in the blood plasma and *** could keep active locomotivity within 40 min in the plasma and urine,although their velocity slowed *** incubated with human cells,magnetotactic bacteria MO-1 had no obvious effects on cellular viability at low dose,while the cell toxicity increased with the augmentation of the quantity of the MO-1 cells *** the in-vivo experiments,the median lethal dose of magnetotactic bacteria MO-1 in rats was determined to be 7.9×10^(10) bacteria/*** results provided the foundation for the biocompatibility and safety evaluations of magnetotactic bacteria MO-1 and suggested that they could be basically used in clinical targeted therapy.

关键词： magnetotactic bacteria motility cell interaction median lethal dose

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Qualitative analysis of a reaction-diffusion SIRS epidemic model with nonlinear incidence rate and partial immunity

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Infectious Disease Modelling 2023年第3期8卷 881-911页

作者： Jianpeng Wang Zhidong Teng Binxiang dai School of Mathematics and Statis Central South UniversityChangshaHunan410075People's Republic of China College of Medical Engineering and Technology Xinjiang Medical UniversityUrumqiXinjiang830011People's Republic of China

In this paper,a reaction-diffusion SIRS epidemic model with nonlinear incidence rate and partial immunity in a spatially heterogeneous environment is *** well-posedness of the solution is firstly *** the basic reproduction number R0 is defined and a threshold dynamics is *** is,when R_(0)1,the disease is permanent,and there exists at least one positive steady state ***,the asymptotic profiles of the positive steady state solution as individuals disperse at small and large rates are ***,as an application of theoretical analysis,a numerical example involving the spread of influenza is *** on the numerical simulations,we find that the increase of transmission rate and spatial heterogeneity can enhance the risk of influenza propagation,and the increase of diffusion rate,saturation incidence for susceptible and recovery rate can reduce the risk of influenza ***,we propose to reduce the flow of people to lower the effect of spatial hetero-geneity,increase the transfer of infected individuals to hospitals in surrounding areas to increase the diffusion rate,and increase the construction of public medical resources to increase the recovery rate for controlling influenza propagation.

关键词： Nonlinear incidence Partial immunity Threshold dynamics Asymptotic profiles Numerical simulations

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