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semi-analytical investigation of heat transfer in a porous convective radiative moving longitudinal fin exposed to magnetic field in the presence of a shape-dependent trihybrid nanofluid

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Applied mathematics and mechanics(english edition) 2024年第1期45卷 197-216页

作者： c.g.pAVItHRA b.j.gIReesHA m.L.KeeRtHI Department of pg studies and Research in mathematics Kuvempu UniversityShankaraghatta 577451India Department of mathematics and statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

the thermal examination of a non-integer-ordered mobile fin with a magnetism in the presence of a trihybrid nanofluid(Fe_3O_4-Au-Zn-blood) is carried out. three types of nanoparticles, each having a different shape, are considered. these shapes include spherical(Fe_3O_4), cylindrical(Au), and platelet(Zn) configurations. the combination approach is utilized to evaluate the physical and thermal characteristics of the trihybrid and hybrid nanofluids, excluding the thermal conductivity and dynamic viscosity. these two properties are inferred by means of the interpolation method based on the volume fraction of nanoparticles. the governing equation is transformed into a dimensionless form, and the Adomian decomposition sumudu transform method(ADstm) is adopted to solve the conundrum of a moving fin immersed in a trihybrid nanofluid. the obtained results agree well with those numerical simulation results, indicating that this research is reliable. the influence of diverse factors on the thermal overview for varying noninteger values of γ is analyzed and presented in graphical representations. Furthermore, the fluctuations in the heat transfer concerning the pertinent parameters are studied. the results show that the heat flux in the presence of the combination of spherical, cylindrical, and platelet nanoparticles is higher than that in the presence of the combination of only spherical and cylindrical nanoparticles. the temperature at the fin tip increases by 0.705 759% when the value of the peclet number increases by 400%, while decreases by 11.825 13% when the value of the Hartman number increases by 400%.

关键词： convection radiation moving longitudinal fin Adomian decomposition sumudu transform method(ADstm) trihybrid nanofluid magnetic field

三轴形变核^(131)ba中的奇异集体激发模式

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物理学报 2024年第11期73卷 89-100页

作者：韦锐周厚兵王思成丁兵强赟华贾晨旭陈红星郭松 c.m.petrache D.mengoni A.Astier e.Dupont 吕冰锋 D.bazzacco A.boso A.goasduff F.Recchia D.testov F.galtarossa g.jaworski D.R.Napoli s.Riccetto m.siciliano j.j.Valiente-Dobon c.Andreoiu F.H.garcia K.Ortner K.Whitmore A.Ataç-Nyberg t.bäck b.cederwall e.A.Lawrie I.Kuti D.sohler t.marchlewski j.srebrny A.tucholski 广西师范大学物理科学与技术学院桂林541004 广西核物理与核技术重点实验室桂林541004 中国科学院近代物理研究所兰州730000 中国科学院大学北京100049 巴黎萨克雷大学 CNRS/IN2P3IJCLab奥赛91405 帕多瓦大学物理和天文学系帕多瓦I-35131 意大利国家核物理研究所帕多瓦分部帕多瓦I-35131 意大利国家核物理研究所莱尼亚罗国家实验室莱尼亚罗(帕多瓦)I-35020 费拉拉大学理学与自然科学院费拉拉西蒙菲莎大学化学系本拿比BC V5A 1S6 皇家理工学院物理系斯德哥摩尔S-10691 国家研究基金会ithemba加速器科学实验室西萨默塞特7123 西开普大学物理与天文系贝尔维尔ZA-7535 HUN-ReN原子核研究所德布勒森4001 华沙巴斯德拉大学重离子实验室华沙02-093

利用意大利Legnaro实验室串列静电加速器提供的65 meV^(13)c束流与122sn靶的熔合蒸发反应布居了^(131)ba的高自旋态,并搭建了新的能级纲图.新的能级纲图由15条转动带组成,包括三对手征双重带,其中两对正宇称手征带为赝自旋-手征四重带.... 详细信息

利用意大利Legnaro实验室串列静电加速器提供的65 meV^(13)c束流与122sn靶的熔合蒸发反应布居了^(131)ba的高自旋态,并搭建了新的能级纲图.新的能级纲图由15条转动带组成,包括三对手征双重带,其中两对正宇称手征带为赝自旋-手征四重带.正负宇称手征带通过一系列增强的e1跃迁连接,表明它们之间存在八极关联.在低自旋区域搭建了一条新的转动带,通过一系列γ跃迁向νh1_(1/2)晕带退激.这种能级结构与摇摆带相似,但基于现有的实验证据还难以将它确认为摇摆带,不能排除其他集体激发机制,如γ振动的影响.

关键词：高自旋态手征带赝自旋八极关联摇摆运动

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纳米阳离子乳液的制备及在施胶中的应用研究

胶体与聚合物 2024年第1期42卷 14-16页

作者：陈杰李颖张金枝邹其超湖北大学化学化工学院武汉430062

本文以十二烷基二甲基苄基氯化铵和自制的阳离子gemini表面活性剂为复合乳化剂,采用乳液聚合的方法制备了苯乙烯-丙烯酸丁酯共聚物乳液。研究了乳化剂的比例和用量对乳液的基本性质和施胶性能的影响。结果表明:随着复合乳化剂中gemini... 详细信息

本文以十二烷基二甲基苄基氯化铵和自制的阳离子gemini表面活性剂为复合乳化剂,采用乳液聚合的方法制备了苯乙烯-丙烯酸丁酯共聚物乳液。研究了乳化剂的比例和用量对乳液的基本性质和施胶性能的影响。结果表明:随着复合乳化剂中gemini乳化剂比例的增加,乳胶粒的平均粒径增加,可勃值(cobb 60)先增加后减小,在6:4达最小值50.05 g·m^(-2);复合乳化剂的用量越多,乳胶粒的平均粒径和cobb 60吸水值越小,继续增加用量,粒径变化不大,但是cobb 60吸水值会变大,复合乳化剂最佳用量为6%。

关键词： gemini表面活性剂复合乳化剂可勃值

黏声波方程波场模拟的通用格式自适应系数频域有限差分方法

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地球物理学报 2024年第2期67卷 654-669页

作者：徐文豪巴晶 j.m.carcione 朱鹤松河海大学地球科学与工程学院南京211100 National Institute of Oceanography and Applied geophysics-Ogs Borgo Grotta Gigante 42/cTriesteSgonico 34010Italy

黏声波方程常被用于描述地下介质的黏弹性及波的传播现象,频域有限差分(finite difference frequency domain,FDFD)方法是黏声波和黏弹性波波场模拟的常用工具.目前FDFD黏声波模拟常用的二阶五点方法和优化九点方法在一个波长内的网格... 详细信息

黏声波方程常被用于描述地下介质的黏弹性及波的传播现象,频域有限差分(finite difference frequency domain,FDFD)方法是黏声波和黏弹性波波场模拟的常用工具.目前FDFD黏声波模拟常用的二阶五点方法和优化九点方法在一个波长内的网格点数小于4时误差较大.通过令FDFD系数随一个波长内的网格点数自适应从而提高FDFD方法的精度,本文针对黏声波波场模拟发展了一种适用于不同空间采样间隔之比的通用格式自适应系数FDFD方法.同时,为了验证自适应系数FDFD方法对一般黏声波模型的有效性,本文针对三个典型的黏声波模型,分别采用解析解和基于高阶FDFD的参考解验证了所提出方法的有效性.本方法的FDFD格式通过在传统的二阶FDFD格式的基础上引入相关校正项得到,其中校正项按网格点与中心点的距离进行分类选取,同时校正项对应的自适应FDFD系数不仅和空间采样间隔之比相关,还和一个波长内的采样点数相关.所需的自适应FDFD系数可通过声波方程的数值频散关系和查找表高效给出.数值频散分析表明,在空间采样间隔相等或不等的情况下,以相速度误差不超过1%为标准,通用格式自适应系数FDFD方法所需的一个波长内的采样点数均小于2.5.数值模拟实验表明,对于不同的空间采样间隔之比,相对于常用的二阶五点FDFD方法和优化九点FDFD方法,通用格式自适应系数FDFD方法均可在相似的计算量和内存需求下,有效提高黏声波模拟的精度.

关键词：黏声波频域有限差分自适应系数波场模拟通用格式

complexed amino acid minerals ***-glycinate chelated minerals:Impact on the performance of old laying hens

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Animal Nutrition 2024年第1期16卷 395-408页

作者： marcos j.b.santos maria c.m.m.Ludke Leandro m.silva carlos b.V.Rabello mércia R.barros Fabiano s.costa clariana s.santos jamille s.s.Wanderley Department of Animal science Rural Federal University of PernambucoRecifePEBrazil Department of Veterinary science Rural Federal University of PernambucoRecifePEBrazil

the present study was to evaluate the effect of trace minerals(Zn,mn,and cu)from complexed amino acid minerals(ZmcAA)and bis-glycinate chelated minerals(Zmcgly)in laying hen diets on performance,internal and external egg quality,yolk mineral deposition,intestinal morphometry,and bone *** 78 to 98 weeks of age,400 White LsL-Lite strain laying hens were distributed in a randomized design with 4 treatments with 10 replicates per *** were distributed in a 2×2 factorial arrangement using either Zn,mn,and cu of ZmcAA or Zmcgly source at 2 levels:low(20,20,and 3.5 mg/kg of Zn,mn,and cu,respectively)or high(40,40,and 7 mg/kg of Zn,mn,and cu,respectively).the analysis of variance was performed,and in cases where differences were observed,the means were compared using tukey?s test(pthe source and level of trace mineral supplementation had a significant impact on the performance of laying *** fed ZmcAA had higher egg production(p=0.01),egg weight(p=0.02),egg mass(p=0.01),and lower feed conversion ratio(p=0.05)compared to those fed *** ZmcAA supplementation showed higher albumen height(p=0.01),albumen weight(p=0.01),and eggshell thickness(pthe deposition of Zn(pmn(pcu(pthe egg yolk was greater for hens received *** weight(p=0.04)and bone densitometry(pthe tibia were higher with ZmcAA *** the small intestine,ZmcAA resulted in longer villi(p=0.02)and shorter crypt depth(p=0.01)in the *** and ileum measurements were influenced by the level and source of trace minerals(pg hens fed ZmcAA exhibited superior performance,egg quality,deposition of trace minerals in the egg yolk,and bone density compared to hens fed *** this study,older laying hens supplemented with ZmcAA at lower levels demonstrated adequate levels of supplementation.

关键词： bis-glycinates metal-amino acids Radiodensity trace minerals

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miniscIDOm: a scintillator-based tomograph for volumetric dose reconstruction of single laser-driven proton bunches

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High power Laser science and engineering 2024年第2期12卷 41-50页

作者： A.corvino m.Reimold e.beyreuther F.-e.brack F.Kroll j.pawelke j.D.schilz m.schneider U.schramm m.e.p.Umlandt K.Zeil t.Ziegler j.metzkes-Ng Helmholtz-Zentrum Dresden–Rossendorf DresdenGermany technische Universität Dresden DresdenGermany OncoRay–National center for Radiation Research in Oncology Faculty of Medicine and University Hospital Carl Gustav CarusTUD Dresden University of TechnologyHelmholtz-Zentrum Dresden–RossendorfDresdenGermany current affiliation:Institut curie UniversitéPSLCNRS UMR3347OrsayFrance current affiliation:Universitätsklinikum Freiburg FreiburgGermany

Laser plasma accelerators(LpAs)enable the generation of intense and short proton bunches on a micrometre scale,thus offering new experimental capabilities to research fields such as ultra-high dose rate radiobiology or material *** spectrally broadband,laser-accelerated proton bunches allow for tailored volumetric dose deposition in a sample via single bunches to excite or probe specific sample *** rising number of such experiments indicates a need for diagnostics providing spatially resolved characterization of dose distributions with volumes of approximately 1 cm^(3) for single proton bunches to allow for fast online *** we present the scintillator-based miniscIDOm detector for online single-bunch tomographic reconstruction of dose distributions in volumes of up to approximately 1 cm^(3).the detector achieves a spatial resolution below 500μm and a sensitivity of 100 *** detector performance is tested at a proton therapy cyclotron and an LpA proton *** experiments’primary focus is the characterization of the scintillator’s ionization quenching behaviour.

关键词： beam monitoring detectors laser-driven proton beams scintillator-based diagnostics ultra-high dose rate

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collisionless shock acceleration of protons in a plasma slab produced in a gas jet by the collision of two laser-driven hydrodynamic shockwaves

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matter and Radiation at extremes 2024年第2期9卷 12-25页

作者： j.-R.marquès L.Lancia p.Loiseau p.Forestier-colleoni m.tarisien e.Atukpor V.bagnoud c.brabetz F.consoli j.Domange F.Hannachi p.Nicolaï m.salvadori b.Zielbauer LULI CNRSÉcole PolytechniqueCEASorbonne UniversitéInstitut Polytechnique de Paris91128 Palaiseau CedexFrance ceA DAMDIF91297 Arpajon CedexFrance Universitéparis-saclay CEALMCE91680 Bruyères-le-ChatelFrance ceNbg CNRS-IN2P3Universitéde Bordeaux33175 Gradignan CedexFrance gsI Helmholtzzentrum für schwerionenforschung gmbH Planckstraße 164291 DarmstadtGermany University of Darmstadt Schloßgartenstr.764289 DarmstadtGermany eNeA Fusion and technologies for Nuclear safety Department C.R.FrascatiVia Enrico Fermi 45FrascatiRomeItaly ceLIA Universitéde Bordeaux–CNRS–CEA33405 TalenceFrance Universitéparis-saclay CEALIDYL91191 Gif-sur-YvetteFrance

We have recently proposed a new technique of plasma tailoring by laser-driven hydrodynamic shockwaves generated on both sides of a gas jet[marquès et al.,*** 28,023103(2021)].In a continuation of this numerical work,we study experimentally the influence of the tailoring on proton acceleration driven by a high-intensity picosecond laser in three cases:without tailoring,by tailoring only the entrance side of the picosecond laser,and by tailoring both sides of the gas *** tailoring,the acceleration is transverse to the laser axis,with a low-energy exponential spectrum,produced by coulomb *** the front side of the gas jet is tailored,a forward acceleration appears,which is significantly enhanced when both the front and back sides of the plasma are *** forward acceleration produces higher-energy protons,with a peaked spectrum,and is in good agreement with the mechanism of collisionless shock acceleration(csA).the spatiotemporal evolution of the plasma profile is characterized by optical shadowgraphy of a probe *** refraction and absorption of this beam are simulated by post-processing 3D hydrodynamic simulations of the plasma *** with the experimental results allows estimation of the thickness and near-critical density of the plasma slab produced by tailoring both sides of the gas *** parameters are in good agreement with those required for csA.

关键词： acceleration hydrodynamic collision

Impact of device resistances in the performance of graphene‑based terahertz photodetectors

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Frontiers of Optoelectronics 2024年第2期17卷 87-97页

作者： O.castelló sofía m.López baptista K.Watanabe t.taniguchi e.Diez j.e.Velázquez-pérez Y.m.meziani j.m.caridad j.A.Delgado-Notario Department of Applied physics University of Salamanca37008 SalamancaSpain Unidad de excelencia en Luz y materia estructurada(LUmes) University of Salamanca37008 SalamancaSpain Research center for electronic and Optical materials National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Research center for materials Nanoarchitectonics National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Nanotechnology group USAL-NanolabUniversity of Salamanca37008 SalamancaSpain

In recent years,graphene field-effect-transistors(gFets)have demonstrated an outstanding potential for terahertz(tHz)photodetection due to their fast response and *** features are essential to enable emerging tHz applications,including 6g wireless communications,quantum information,bioimaging and ***,the overall performance of these photodetectors may be utterly compromised by the impact of internal resistances presented in the device,so-called access or parasitic *** this work,we provide a detailed study of the influence of internal device resistances in the photoresponse of high-mobility dual-gate gFet *** dual-gate architectures allow us to fine tune(decrease)the internal resistance of the device by an order of magnitude and consequently demonstrate an improved responsivity and noise-equivalent-power values of the photodetector,*** results can be well understood by a series resistance model,as shown by the excellent agreement found between the experimental data and theoretical *** findings are therefore relevant to understand and improve the overall performance of existing high-mobility graphene photodetectors.

关键词： graphene tHz photodetector Field-effect transistor plasmonic

consumer transparency in the production chain for plant varieties produced using new genomic techniques

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abIOtecH 2024年第2期5卷 239-246页

作者： j.m.Lukasiewicz c.c.m.van de Wiel L.A.p.Lotz m.j.m.smulders Wageningen University&Research P.O.Box 386NL-6700 AJ WageningenThe Netherlands

plants edited with new genomic techniques(Ngts)currently fall under the genetically modified Organisms Directive(2001/18/ec)in the european *** the proposal of the european commission,Ngt plants are partially exempted from the regulations of this *** proposal makes a distinction between two categories of Ngt plants:Ngt-1 and ***-1 category plants are considered equal to plants obtained through conventional breeding *** plants will not be labelled for the consumer,although they will be labelled as ***-2 category plants may be labelled with additional information as a positive *** of seeds of varieties made with gene editing,but not the products,would mean that most steps in the production chain are transparent,but not the last step towards ***“right to know”and increasing knowledge of gene-edited food is a common theme in food labelling towards ***,we describe current labelling regimes and registers and how these may be applied to provide transparency on gene-edited products to ***,we also look into consumer studies,which indicate a greater acceptance of gene-edited food among consumers,especially when additional benefits such as sustainability are mentioned.

关键词： Labelling New genomic techniques consumer transparency plant products