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Structural,morphological,optical and antibacterial performances of rare earth(Sm)-doped ZnO nanorods

journal of Rare Earths 2024年第11期42卷 2119-2127页

作者： A.Ravi j.Samuel S.Sahaya jude Dhas S.Usharani Turibius Simon D.Senthil Kumar S.K.jasmin Vijitha A.Sivakumar Raju Suresh Kumar c.S.Biju Department of physics University College of Engineering Department of physics and Research centre Malankara Catholic College Manonmaniam Sundaranar University Saveetha School of Engineering Saveetha Institute of Medical and Technical SciencesSaveetha University Department of chemistry S.I.V.E.T College Department of Biotechnology Vivekanandha College of Arts and Science for Woman (Autonomous) Department of physics Vel Tech Rangarajan Dr.Sagunthala R & D Institute of Science and Technology Department of physics & Research centre Muslim Arts College Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior Institute of GeochemistryChinese Academy of Sciences Department of chemistry College of ScienceKing Saud University Department of physics St. Alphonsa College of Arts and Science

The significant rise of ultra-violet（UV） radiation and pathogenic infectious bacteria poses a serious threat to global *** researchers' interests are attracted by novel materials with strong UVblocking ability,antibacterial activity and low toxicity to other *** this case,a simple wet chemical method with different annealing temperatures（400,500,and 600℃） was employed to create highly effective rare earth（Sm）-doped ZnO ***（101） plane of wurtzite ZnO shifts towards a lower angle with increasing annealing temperature,according to the X-ray diffraction（XRD） study findings,which additionally establishes the consequence of lattice *** of doublet peaks of Sm 3d(Sm 3d5/2and Sm 3d3/2) in the X-ray photoelectron spectroscopy（XpS） spectrum clearly validates the substitution of Sm3+ions in the 500℃-annealed *** 500℃-annealed nanorods exhibit combined performances of the wide band gap,improved UV absorbance,and vivid green luminescent emission（563 nm）.Additio nally,the nanorods have favorable UV-blocking execution of 96% for UVA at 360 nm,92% for UVB at 320 nm,and 57% for UVc at 225 nm,which is greater than the majority of ZnO-related materials that have been reported up to this *** doping is also appropriate for improving bacterial inhibition against the two studied strains（Escherichia coli and Staphylococcus aureus）,in addition to the intriguing features discussed ***,with maximum inhibition zone diameters of 20±0.72 and 18±0.57 mm,respectively,these nanorods exhibit high inhibitory action against *** and *** bacterial *** rare earth-doped material developed during the current experiment,which was annealed at 500℃,could potentially serve as an effective replacement for UV-blocking and antibacterial material,especially for biomedical applications.

关键词： Wet chemical method rare earth doping Metal oxide UV-Shielding Bacterial inhibition

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Evaluating reservoir suitability for large-scale hydrogen storage:A preliminary assessment considering reservoir properties

Energy Geoscience

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Energy Geoscience 2024年第4期5卷 198-211页

作者： chinedu j.Okere james j.Sheng chinedu Ejike Bob L.Herd Department of petroleum Engineering Texas Tech UniversityLubbockTX79409United States Mewbourne School of petroleum and Geological Engineering University of OklahomaOK73019United States

With rising demand for clean energy,global focus turns to finding ideal sites for large-scale underground hydrogen storage(UHS)in depleted petroleum reservoirs.A thorough preliminary reservoir evaluation before hydrogen(H_(2))injection is crucial for UHS success and *** criteria for UHS often emphasize economics and chemistry,neglecting key reservoir *** study introduces a comprehensive framework for the reservoir-scale preliminary assessment,specifically tailored for long-term H_(2) storage within depleted gas *** evaluation criteria encompass critical components,including reservoir geometry,petrophysical properties,tectonics,and formation *** illustrate the practical application of this approach,we assess the Barnett shale play reservoir *** assessment unfolds through three key stages:(1)A systematic evaluation of the reservoir's properties against our comprehensive screening criteria determines its suitability for H_(2) storage.(2)Using both homogeneous and multilayered gas reservoir models,we explore the feasibility and efficiency of H_(2) *** phase involves an in-depth examination of reservoir behavior during the injection stage.(3)To enhance understanding of UHS performance,sensitivity analyses investigate the impact of varying reservoir dimensions and injection/production *** findings reveal the following:(a)Despite potential challenges associated with reservoir compaction and aquifer support,the reservoir exhibits substantial promise as an H_(2) storage site.(b)Notably,a pronounced increase in reservoir pressure manifests during the injection stage,particularly in homogeneous reservoirs.(c)Furthermore,optimizing injection-extraction cycle efficiency can be achieved by augmenting reservoir dimensions while maintaining a consistent *** ensure a smooth transition to implementation,further comprehensive investigations are advised,including experimental and numerical studies to address

关键词： Site selection Underground hydrogen storage preliminary evaluation Depleted petroleum reservoirs Reservoir assessment

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Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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chinese physics c 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov p.Adlarson O.Afedulidis X.c.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.cai X.cai A.calcaterra G.F.cao N.cao S.A.cetin j.F.chang W.L.chang G.R.che G.chelkov c.chen c.H.chen chao chen G.chen H.S.chen M.L.chen S.j.chen S.L.chen S.M.chen T.chen X.R.chen X.T.chen Y.B.chen Y.Q.chen Z.j.chen Z.Y.chen S.K.choi X.chu G.cibinetto F.cossio j.j.cui H.L.Dai j.p.Dai A.Dbeyssi R.E.de Boer D.Dedovich c.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici c.Q.Feng j.H.Feng Y.T.Feng K.Fischer M.Fritsch c.D.Fu j.L.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia p.T.Ge Z.W.Ge c.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding j.Dong L.Y.Dong M.Y.Dong X.Dong M.c.Du S.X.Du Z.H.Duan p.Egorov Y.H.Fan j.Fang jA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu c.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.j.Guo R.p.Guo Y.p.Guo A.Guskov j.Gutierrez K.L.Han T.T.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius c.H.Heinz Y.K.Heng c.Herold T.Holtmann p.c.Hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.M.Hu j.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.p.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad j.jackson S.janchiv j.H.jeong Q.ji Q.p.ji W.ji X.B.ji X.L.ji Y.Y.ji X.Q.jia Z.K.jia D.jiang H.B.jiang p.c.j.ang S.S.jiang T.j.jiang X.S.jiang Y.jiang j.B.jiao j.K.jiao Z.jiao S.jin Y.jin M.Q.jing X.M.jing T.johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.c.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn j.j.Lane p.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff M.Lellmann T.Lenz c.Li c.Li c.H.Li cheng Li D.M.Li F.Li G.Li H.Li H.B.Li H.j.Li H.N.Li Hui Li j.R.Li j.S.Li K.Li L.j.Li L.K.Li Lei Li M.H.Li p.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear physics SB RAS(BINp) Novosibirsk 630090Russia carnegie Mellon University PittsburghPennsylvania 15213USA central china Normal University Wuhan 430079China central South University Changsha 410083China china center of Advanced Science and Technology Beijing 100190China china University of Geosciences Wuhan 430074China chung-ang University Seoul06974Republic of Korea cOMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and Technology Luoyang 471003China Henan University of Technology Zhengzhou 450001China Huangshan college Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern physics Lanzhou 730000China Institute of physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the cp-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the cKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis cp-even fraction

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砂土压缩变形传感光缆耦合试验分析与预测模型研究

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岩土力学 2024年第5期45卷 1570-1582页

作者：许时昂张平松程刚吴海波张涛安徽理工大学地球与环境学院安徽淮南232001 合肥综合性国家科学中心能源研究院(安徽省能源实验室) 安徽合肥230051 华北科技学院计算机学院北京101601 合肥工业大学机械工程学院安徽合肥230009

灾害监测、预测是地质与岩土工程领域一项极为重要的任务。分布式光纤传感技术凭借其连续、实时、抗干扰、稳定性好等优点在长距离、长周期、高隐蔽性、强突发性的灾害监测中发挥了显著的作用。然而,针对不同工程问题,评价与解决传感光... 详细信息

灾害监测、预测是地质与岩土工程领域一项极为重要的任务。分布式光纤传感技术凭借其连续、实时、抗干扰、稳定性好等优点在长距离、长周期、高隐蔽性、强突发性的灾害监测中发挥了显著的作用。然而,针对不同工程问题,评价与解决传感光缆与被测岩土体协调变形问题,是精细化分析岩土体变形分布与研究演化规律的关键所在。利用自主研制的三维主动变形可控围压光缆-砂土耦合试验装置,探究了0~4.0Mpa围压条件下金属基索传感光缆与粗砂介质压缩变形的协调性问题。试验结果表明:低围压条件下金属基索传感光缆与砂土压缩变形协调性较差,变形表现为非线性变化特征;随着围压增大,传感光缆与砂土耦合效果提高,变形呈现线性变化特征,当围压达到1.6Mpa后,两者协调变形一致性明显提高,其形变由非线性向线性转变。基于上述变形特性,提出了一种围压曲面投影数值模型,采用非扭结边界条件的样条插值算法对非试验数据实际位移进行预测,结果表明该模型具有较好的可靠性。试验研究认为金属基索光缆用于高围压条件下砂土变形测试具有更高的准确性,研究内容可以为分布式光纤传感测试技术用于深部地层变形监测提供科学的参考依据。

关键词：分布式光纤岩土变形应变传递协调变形数值模型

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phenotypic nutrient up-take differences in an alley cropping system in semi-arid Machakos, Kenya

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journal of Environmental Sciences 2001年第2期13卷 164-169页

作者： D.N. Mungai c.L.coulson c.j. Stigter j.K. Ng’ang’a D.N.Mugendi Department of Geography University of NairobiNairdbiKenya Department of Botany University of NairobiNairobiKenya Department of Enviromnental Sciences Graduate School of Productian EcologyWageningen UniversityDuivendaal 26701 APThe Netherlands Department of Meteorology University of NairobiNairobiKenya Kenya Forestry Research Instiute(KEFRI NairobiKanya)

Alley cropping of cassia siamea and maize was studied in semi arid Kenya for soil fertility improvement. Katumani composite maize was planted except in the short rains of 1988 (SR88) when a hybrid variety was sown. Therefore the grain yield per row increased differently in the alley cropped maize (cM). Sole maize (SM) and cM yields were higher in SR88 than in the long rains of 1988 (LR88) by 62% and 38%, while yields from the same treatments in LR89 were only 21% and 45% of those in SR88 These differences in relative maize yields are attributed to differences between the two maize varieties in competition under nutrient stress conditions.

关键词： alley cropping cassia siamea maize nutrients maize yield semi arid condition soil moisture Kenya

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早期负重与延迟负对踝关节骨折术后患者影响的临床研究

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中国临床药理学杂志 2024年第16期40卷 2343-2343页

作者： BRETHERTON c p AcHTEN j jOGARAH V 海峰

脚踝骨折手术后,患者通常被要求在6周内避免行走(延迟负重)。手术后2周步行(早期负重)可能是一种安全且可取的康复方案。本研究旨在对比早期负重康复方案与延迟负重康复方案的临床和成本效益本研究为一项随机、非劣效性对照的多中心临... 详细信息

脚踝骨折手术后,患者通常被要求在6周内避免行走(延迟负重)。手术后2周步行(早期负重)可能是一种安全且可取的康复方案。本研究旨在对比早期负重康复方案与延迟负重康复方案的临床和成本效益本研究为一项随机、非劣效性对照的多中心临床试验,研究对象为接受了不稳定踝关节骨折的急性手术的患者,被随机分为延迟负重组和早期负重组。

关键词：康复方案多中心临床试验踝关节骨折早期负重成本效益非劣效性骨折手术后急性手术

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基于扩散模型的高阶拓扑绝缘体实时设计

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力学学报 2024年第7期56卷 1840-1848页

作者：徐志昂骆嘉晨丁相贵杜宗亮郭旭大连理工大学工业装备结构分析优化与cAE软件全国重点实验室辽宁大连116024 波士顿大学机械工程系美国波士顿02215 大连理工大学宁波研究院浙江宁波315016

作为一种全新的波控工具,高阶拓扑绝缘体可以将能量鲁棒高效地局域化在低维空间,且对缺陷不敏感.在光子和声子系统中,高阶拓扑绝缘体的快速设计仍然是一项挑战.采用移动可变形孔洞法显式描述c4v对称的单胞构型,并结合能带理论和对称指... 详细信息

作为一种全新的波控工具,高阶拓扑绝缘体可以将能量鲁棒高效地局域化在低维空间,且对缺陷不敏感.在光子和声子系统中,高阶拓扑绝缘体的快速设计仍然是一项挑战.采用移动可变形孔洞法显式描述c4v对称的单胞构型,并结合能带理论和对称指标刻画其性能(拓扑性质和非平凡带隙宽度).在此基础上,构建了包含几何参数、无量纲化带隙宽度与拓扑性质指标的高阶拓扑绝缘体数据集,并提出了一种基于去噪扩散概率模型(denoising diffusion probabilistic model,DDpM)的实时设计框架.相比采用其他生成式模型的设计框架,DDpM有效避免了训练不稳定和生成保真度低等问题.该框架可以精准且快速地按目标需求或最大化带隙宽度逆向设计力学高阶拓扑绝缘体,在单机上生成所需设计的平均相对误差在3.5%以内,平均耗时仅需0.01 s,相比传统逆向设计方法效率提升6~7个数量级.通过使用Wasserstein距离度量逆向设计样本的多样性,该框架相较基于深度学习代理模型的优化设计结果,表现出更高的生成结果多样性.此外,所得设计具有显式描述的几何信息,可以直接与cAD/cAE软件结合,避免了隐式描述算法中的后处理步骤.这种基于DDpM的实时设计框架可扩展应用于多物理场拓扑材料和其他类型超材料的逆向设计,并为构建声子和光子拓扑材料的数据库提供了基础.

关键词：高阶拓扑绝缘体实时设计去噪扩散概率模型移动可变形孔洞法对称指标理论

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基于宽度自编码网络的单分类集成算法

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信号处理 2024年第4期40卷 776-788页

作者：施一帆陈宇昂曾焕强杨楷翔华侨大学工学院福建泉州362021 华南理工大学计算机科学与工程学院广东广州510006 计算机软件新技术国家重点实验室江苏南京210023

异常检测是模式识别领域的经典研究,然而在极端类别不平衡场景下,异常样本匮乏,训练数据仅包含正常样本,传统异常检测方法难以适用。因此,单分类算法逐渐受到关注,它只使用目标类样本构建决策边界,实现对非目标类样本的识别。目前单分... 详细信息

异常检测是模式识别领域的经典研究,然而在极端类别不平衡场景下,异常样本匮乏,训练数据仅包含正常样本,传统异常检测方法难以适用。因此,单分类算法逐渐受到关注,它只使用目标类样本构建决策边界,实现对非目标类样本的识别。目前单分类算法已经取得了显著进展,然而也存在一些局限性:(1)原始特征空间容易受噪声特征干扰;(2)单模型的单分类算法难以从多个特征空间学习更全面的决策边界;(3)缺少对先前模型的欠拟合样本进行针对性学习。为了解决这些问题,本文提出了基于宽度自编码网络的单分类集成算法(Ensemble One-class classification Based on BLS-Autoencoder,EOc-BLSAE)。首先,本文设计了一种单分类宽度自编码网络模型(One-class BLS-Autoencoder,Oc-BLSAE),它能高效学习原始特征空间到重构特征空间的非线性映射关系,利用重构误差构建决策边界;接着,本文设计了单分类Boosting策略,通过最小化全局重构损失,迭代学习欠拟合样本,从而多角度构建Oc-BLSAE模型,并自适应评估模型的可靠性;最终,加权集成多个Oc-BLSAE模型,有效提升整体算法准确性和鲁棒性。在实验中,本文在16个不同规模的单分类任务上进行参数实验、对比实验和消融实验,结果表明所提算法参数选择较为灵活,算法各模块能够相互协同,有效提升单分类任务的准确性和鲁棒性,整体性能超过前沿单分类方法。

关键词：单分类异常检测宽度学习系统集成学习

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Fe-金属有机框架玻璃的形成过程与机理

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硅酸盐学报 2024年第8期52卷 2553-2558页

作者：刘鑫宇郭超慧陶海征乔昂武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 中山市武汉理工大学先进工程技术研究院广东中山528400

不同的中心金属离子能够赋予金属有机框架材料(MOFs)不同的性能,众多Fe基MOF材料具有优异的电、磁性能。但由于Fe元素存在变价,且Fe—N配位键难以形成,可熔融成玻Fe-MOF材料鲜有报道。使用无溶剂法成功制备Fe_(3)(c_(3)H_(2)N_(2))_6(c_... 详细信息

不同的中心金属离子能够赋予金属有机框架材料(MOFs)不同的性能,众多Fe基MOF材料具有优异的电、磁性能。但由于Fe元素存在变价,且Fe—N配位键难以形成,可熔融成玻Fe-MOF材料鲜有报道。使用无溶剂法成功制备Fe_(3)(c_(3)H_(2)N_(2))_6(c_(3)H_(4)N_(2))_(2)晶体,命名为FcIR,即Fe-MOF晶体,并且利用熔融淬冷法制成了Fe-MOF玻璃,并探究该Fe-MOF晶体在加热过程中的形态和结构演变,以及其玻璃态形成的机理。结果表明:相较于以Zn为中心离子的可熔融MOF材料,Fe离子对晶体加热过程中的熔融过程和结构演变会产生较大影响;FcIR晶体熔融淬冷后发生近程序结构变化,即由晶态时Fe离子与咪唑的6配位八面体脱去2个单配位咪唑转变为玻璃态的4配位四面体。

关键词：金属有机框架玻璃形成熔融结构变化

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Influence of biological maturation on cardiac autonomic recovery in female volleyball players during&after repeated sprints training:An experimental trial

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Sports Medicine and Health Science 2024年第3期6卷 279-286页

作者： paulo Francisco de Almeida-Neto Fernanda cristina Silva de Oliveira jose Marcondes de Oliveira-júnior júlio cesar Medeiros Alves Matheus de Lima Rocha Iago Medeiros da Silva Roberto Felipe c^amara Rocha paulo Moreira Silva Dantas Breno Guilherme de Araújo Tin^oco cabral Health Sciences center Federal University of Rio Grande do NorteCCS-UFRNNatal59012-570RNBrazil Department of physical Education Federal University of Rio Grande do NorteDEF-UFRNNatal59078-970RNBrazil

previously,it was suggested that biological maturation(BM)could be linked to cardiac autonomic recovery(cAR)in the pediatric ***,this influence hasn’t been confirmed *** aim was to investigate the impact of BM on cAR in female volleyball *** study with a sample of 38 volleyball players,comprising 20 girls(age:[11.62.1]years)and 18 women(age:[24.55.5]years),we analyzed BM,comparing maturing subjects(girls)with mature subjects(women).Additionally,we assessed peak height velocity(pHV)in *** conducted a training session involving repeated sprints(3 rounds of 6 sprints interspersed by 5 min[min]of passive rest).Using short-range radio telemetry,we analyzed cAR during(at the end of the 1st and 2nd rounds)and after(following the 3rd round)the training session of repeated sprints by applying the 60-s to 300-s heart rate recovery index(HRR-Index).Girls exhibited superior cAR compared to women(round 2:60-s,120-s,240-s,and 300-s,pp analyses of BM indicated that individuals in the Late-pHV stage demonstrated superior cAR compared to those in the Early-pHV and During-pHV groups.(60-s to 300-s,η2p>0.4,pjects in the During-pHV stage were superior to those in the Early-pHV stage(240-sa 300-s,η2 p>0.4,pconcluded that biological maturation has a significant impact on cardiac autonomic recovery.

关键词： Exercise Sport Volleyball Heart rate pediatric

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