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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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spatial analysis of Dengue through the reproduction numbers relating to socioeconomic features:Case studies on two Brazilian urban centers

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Infectious Disease Modelling 2024年第1期9卷 142-157页

作者： Ana T.C.silva Rejane C.Dorn Lívia R.Tomás Leonardo B.L.santos Lacita M.skalinski suani T.R.Pinho Departamento de Física Universidade Estadual de Feira de SantanaAv.Transnordestinas/n.Novo HorizonteFeira de Santana44036-900BABrazil Instituto de Física Universidade Federal da BahiaRua Barão de Jeremoabo s/nCampus Universitário de OndinaSalvador40170-115BABrazil Centro Nacional de Monitoramento e Alertas de Desastres Naturais(CEMADEN) Estrada Dr.Altino Bondensan500São Josédos Campos12247-016SPBrazil Universidade Estadual de santa Cruz Campus Soane Nazaréde AndradeRodovia Jorge AmadoKm 16SalobrinhoIlhéus45662-900BABrazil Instituto de saúde Coletiva Universidade Federal da BahiaR.Basílio da Gamas/n-CanelaSalvador40110-140BABrazil Instituto Nacional de Ciência e Tecnologia-sistemas Complexos Virtual InstitutionBrazil

The study of the propagation of infectious diseases in urban centers finds a close connection with their population's social characteristics and *** work performs a spatial analysis of dengue cases in urban centers based on the basic reproduction numbers,R0,and incidence by planning areas(PAs),as well as their correlations with the Human Development Index(HDI)and the number of *** analyzed dengue epidemics in 2002 at two Brazilian urban centers,Belo Horizonte(bh)and Rio de Janeiro(RJ),using PAs as spatial *** results reveal heterogeneous spatial scenarios for both cities,with very weak correlations between R0 and both the number of trips and the HDI;in bh,the values of R0 show a less spatial heterogeneous pattern than in *** bh,there are moderate correlations between incidence and both the number of trips and the HDI;meanwhile,they weakly correlate for ***,the absence of strong correlations between the considered measures indicates that the transmission process should be treated considering the city as a whole.

关键词： Dengue Mathematical mode lBasic reproduction number Urban mobility Urban indices

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VARIATIONAL L^q-APPROXIMATION BY VARIsOLVENT FAMILY UNDER THE YOUNG's CONDITION

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Acta Mathematica scientia 1997年第3期17卷 330-340页

作者：罗祖华 Dept. of Mathematics & Computer science University of Leicester Leicester LE1 5BH U.K.

The new Lq approximation methods proposed by *** and ***,which maintains the characteristic feature-alternation-of the classic Chebyshev uniform approximation, is extended to varisolvent approximation under the Young's *** theorems of existence, characterizations, unicity, de La Vallee Poussin and continuity of the best approximation are presented.

关键词： Varisolvency Young's condition Best approximation Property Z

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A comprehensive literature review on the perioperative surgical home

A comprehensive literature review on the perioperative surgi...

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2016中国中西医结合麻醉学会[CsIA]年会暨第三届全国中西医结合麻醉学术研讨会、河南省中西医结合学会麻醉专业委员会成立大会

作者：汪涛 Zhou YT Wu bh 江苏省沭阳县人民医院麻醉科 Department of General surgery Shuyang People’s Hospital

Introduction The concept of a perioperative surgical system has been evolving,described,studied and recorded mostly in the western world,including countries within North America,Europe and Australia,in the last forty ... 详细信息

关键词： A comprehensive literature review on the perioperative surgical home

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GPs测量中存在的问题

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国外测绘 1994年第1期 11-15页

作者： Well.,bh 王爱朝

有关ＧＰＳ方面的许多文章都以极大的热情报道ＧＰＳ是如何给定位技术带来了一场革命，毫无凝问，总的说这是没有错。但是无论如何，在应用ＧＰＳ方面仍然存在一些问题，本文将对这些进行讨论。为了使用户便于理解，这里将这些问题分为... 详细信息

有关ＧＰＳ方面的许多文章都以极大的热情报道ＧＰＳ是如何给定位技术带来了一场革命，毫无凝问，总的说这是没有错。但是无论如何，在应用ＧＰＳ方面仍然存在一些问题，本文将对这些进行讨论。为了使用户便于理解，这里将这些问题分为两类。一类可看成是人为造成的，如选择可用笥（ＳＡ），抗窃密（Ａ－Ｓ）等，其中大部分均可通过过政策的调整加以消除；另一类则是ＧＰＳ系统本身所固有的在任何情况下都不可避免的问题。

关键词： GPs 大地测量定位可靠性

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皮肤T细胞淋巴瘤的治疗选择

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国外医学（皮肤性病学分册） 1993年第5期19卷 276-279页

作者： Kathryn bh 张信江杨福琴

皮肤 T 细胞淋巴瘤中的 MF 和 sézary 综合征是最先表现在皮肤上的非何杰金病。早期病变局限于皮肤,最好选用局部治疗,例如局部外用氮芥、PUVA 及全层皮肤电子束放疗等.对出现红皮病的患者首选体外光置换疗法;全身治疗通常用于病情顽... 详细信息

皮肤 T 细胞淋巴瘤中的 MF 和 sézary 综合征是最先表现在皮肤上的非何杰金病。早期病变局限于皮肤,最好选用局部治疗,例如局部外用氮芥、PUVA 及全层皮肤电子束放疗等.对出现红皮病的患者首选体外光置换疗法;全身治疗通常用于病情顽固者及一开始就表现出皮外受累的病人;维甲酸类药物主要用于早期皮肤 T 细胞淋巴瘤;α-干扰素早期斑块内注射及对晚期病人均有效.

关键词：皮肤肿瘤 T细胞淋巴瘤

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Identification and validation of glycoprotein biomarkers in PD and its progression

Identification and validation of glycoprotein biomarkers in ...

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中国生物化学与分子生物学会第十届会员代表大会暨全国学术会议

作者： JP Zhang bh Jiao HJ Hwang Catherine Pan Min shi Jing Zhang Department of Biochemistry and Molecular Biology Second Military Medical University Department of Pathology University of Washington

Parkinson’s disease(PD) is the forth common disease occured in senior *** some unique proteins, such as a-synuclein and DJ-1,were extensively studied, the detail pathogenesis of PD is still *** glycosylation regulates protein function and cellular ***,aberrant protein glycosylations have been recognized to play major roles in various human disorders,including PD and AD. In this study,hydrazide resin was used to enrich glycoproteins which were isolated from brain tissue of normal people and PD *** perform quantitative analysis of glycoproteins unique to PD and PD progression,

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Equation of state for pure fluids at critical temperature

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Chinese Physics B 2012年第4期21卷 378-382页

作者： s. B. Khasare Department of Physics Science College Congress NagarNagpur-440010India

In this paper, we employ the concept of probability for creating a cavity with diameter d in fluid along with the perturbation and variation approach, and develop an equation of state （EOs） for a hard sphere （Hs） and Lennard Jones （L J） fluids. A suitable axiomatic form for surface tension s（r） is assumed for the pure fluid, with r as a variable. The function s（r） has an arbitrary parameter rn. s（r） = A ＋ B（d/r）/[1 ＋ m（d/r）]. We use the condition in terms of radial distribution function G（λd,η） containing the self-consistent parameter λ and the condition of continuity at r = d/2 to determine A and B. A different EOs can be obtained with a suitable choice of rn and the EOs has a lower root-mean-square deviation than that of Barker-Henderson bh2 for LJ fluids.

关键词： equation of state Lenard Jones potential hard-sphere potential liquid mixture

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Upfront Alternate Donor HsCT for Children with severe Aplastic Anemia:A single Center Prospective Clinical Trail Outcome

Upfront Alternate Donor HSCT for Children with Severe Aplast...

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第十三届江浙沪儿科学术会议暨2016年浙江省医学会儿科学学术年会

作者： LUO CJ LUO CY WANG JM QIN X XU KL ZHANG bh CHEN J shanghai Jiao Tong University School of MedicineShanghai Children’s Medical Center

Background:Alternate donor(AD)hematopoietic stem cell transplantation(HsCT)for children with severe aplastic anemia(sAA)remains challenges mainly associated with graft failure and Graft versus Host Disease(GVHD).so it has been considered in the second choice of treatment *** the survival outcomes from AD HsCT in childhood sAA have improved steadily over the past *** answer the question whether the AD HsCT can be

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Phase Formation and Magnetic Properties of Nanocomposite Nd-Fe-B Adjusted by small Amount of Dy and Co

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Journal of Rare Earths 2004年第Z2期22卷 89-94页

作者： T s Jang T W Lim H s Aum D H Lee M B Kim Division of Materials and Chemical Engineering Sun Moon UniversityKorea Division of Materials and Chemical EngineeringSun Moon UniversityKorea Division of Mechanical EngineeringSun Moon University 100 Kalsan LiTangjung MyonAsan CityChoongnam 336-708Korea Division of Materials and Chemical EngineeringSun Moon UniversityKorea Division of Materials and Chemical EngineeringSun Moon UniversityKorea

In order to improve and stabilize the magnetic properties of nanocomposite Nd2Fe14B/α-Fe magnetic alloys by a compositional adjustment, small amount of Dy and/or Co was added to Nd9Fe84B7 alloys. DTA analysis on the amorphous of the alloys took place as the soft magnetic phases were crystallized, and then the hard magnetic Nd2Fe14B was precipitated from them. While α-Fe and a metastable 1:7 (TbCu7-type) phase were formed simultaneously in Dy and Co-free alloys, they were crystallized separately at different temperatures after Dy or Co was added. This phase separation occurred more clearly in the Dy-treated alloys and the other soft magnetic phase Fe3B was also stabilized by Dy and/or Co. The 1: 7 phase that was stabilized by Dy and/or Co was not eliminated at 700 ℃, decreasing magnetic properties of the alloys. It was eventually disappeared above 725 ℃, but Fe3B was not eliminated even at 750 ℃ when Dy was added more than 0.5 at% or Co was added more than 2.0 at%. Amount of Nd2Fe14B in the alloys tended to increase as Dy addition increased,whereas Co addition did not lead to any appreciable change in the ratio of α-Fe and Nd2Fe14B. Moreover, Dy addition apparently increased coercivity of an alloy while Co addition had a beneficial effect on remanence. The grains in the Dytreated alloys were usually finer than those in the Co-treated alloys. The grain size of both α-Fe and Nd2Fe14B in the alloys exhibiting mr ≥ 0.72 was in the range of 20 ～ 40 nm or even larger 50 nm, which is larger than the theoretical optimum size ( ～ 10 nm). Typical magnetic properties obtained from a Nd7.5Dy1.5Fe82.5Co1.5B7 alloy annealed for 12 min at 725 ℃were iHc=4.85 kOe, Br= 11.32 kG, (bh)max = 15.73 MGOe, and mr=0.73.

关键词： nanocomposite Nd-Fe-B magnetic properties remanence coercivity

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