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Improving wood volume predictions in dry tropical forest in the semi-arid brazil

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Journal of Arid Land 2020年第6期12卷 1046-1055页

作者： robson b de LIMA Patrícia A b bARRETO-GARCIA Alessandro de PAULA Jhuly E S PEREIRA Flávia F de CARVALHO Silvio H M GOMES Department of Forest Engineering State University of AmapáMacapá68900070Brazil Department of Forest Science State University of Southwest BahiaVitória da Conquista 45083900Brazil Universidade Federal de Lavras Lavras 37200900Brazil Universidade de São Paulo Piracicaba 13418900Brazil

The volumetric variability of dry tropical forests in brazil and the scarcity of studies on the subject show the need for the development of techniques that make it possible to obtain adequate and accurate wood volume *** this study,we analyzed a database of thinning trees from a forest management plan in the Contendas de SincoráNational Forest,southwestern bahia State,*** data set included a total of 300 trees with a trunk diameter ranging from 5 to 52 ***,validation and statistical selection of four volumetric models were *** to the difference in height values for the same diameter and the low correlation between both variables,we do not suggest models which only use the diameter at breast height(DbH)variable as a predictor because they accommodate the largest estimation *** comparing the best single entry model(Hohenald-Krenn)with the Spurr model(best fit model),it is noted that the exclusion of height as a predictor causes the values of 136.44 and 0.93 for Akaike information criterion(AIC)and adjusted determination coefficient(R2 adj),which are poorer than the second best model(Schumacher-Hall).Regarding the minimum sample size,errors in estimation(root mean square error(RMSE)and bias)of the best model decrease as the sample size increases,especially when a larger number of trees with DbH≥15.0 cm are randomly *** sampling by diameter class produces smaller volume prediction errors than random sampling,especially when considering all *** summary,the Spurr and Schumacher-Hall models perform *** models suggest that the total variance explained in the estimates is not less than 95%,producing reliable forecasts of the total volume with *** estimates indicate that the bias around the average is not greater than 7%.Our results support the decision to use regression methods to build models and estimate their parameters,seeking stratification strategies in diameter classes for the sample trees.

关键词： volume modeling minimal sample size Caatinga Spurr model forest management

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ICEHTMC 2015特别供稿专栏

中国医疗设备 2016年第2期31卷 1-5,24页

作者： J.b.robson Foundation Director South Australian Biomedical Engineering(retired)AdelaideSouth Australia Flindersbiomedical Enterprises AdelaideSouthAustralia

2015年10月21日,《中国医疗设备》杂志社独家承办了＂第一届国际临床工程与医疗技术管理大会＂（ICEHTMC 2015）,大会主席由美国FDA医疗设备顾问委员会主席、美国临床医学工程学会首任主席Yadin David先生和解放军总医院医务部副主任、... 详细信息

2015年10月21日,《中国医疗设备》杂志社独家承办了＂第一届国际临床工程与医疗技术管理大会＂（ICEHTMC 2015）,大会主席由美国FDA医疗设备顾问委员会主席、美国临床医学工程学会首任主席Yadin David先生和解放军总医院医务部副主任、中国医师协会临床工程师分会会长周丹主任共同担任。来自14个国家的临床医学工程学会的主席、23个国家的60多位医学工程的领军人物、世界卫生组织医疗器械委员会的协调员及国内580多医工专家与会交流,共同搭建世界临床医学工程的学术平台。大会共征集了62篇临床医学工程领域的优秀论文,主要包括医疗技术创新、医疗技术管理、医疗设备维修模式、标杆管理、医疗设备监管及风险管理方法、医疗设备评估和采购方法、医疗技术人员的职业化发展、医疗技术评估等8个主题。本刊自2016年第1期起开始刊登大会征集的优秀稿件（每期1-2篇），分享医学工程领域的最新动态，以供同行参考。

关键词：临床医学工程临床工程师医疗设备顾问委员会中国医师协会 ICEHTMC 2015 周丹医疗技术协调员首任主席

Apples to oranges:environmentally derived,dynamic regulation of serotonin neuron subpopulations in adulthood?

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Neural Regeneration Research 2025年第9期20卷 2596-2597页

作者： Christopher J.O’Connell Matthew J.robson Department of Genetics College of MedicineHarvard UniversityBostonMAUSA James L.Winkle College of Pharmacy Division of Pharmaceutical SciencesUniversity of CincinnatiCincinnatiOHUSA Neuroscience Graduate Program College of MedicineUniversity of CincinnatiCincinnatiOHUSA

Traumatic brain injury(TbI)is a public health problem with an undue economic burden that impacts nearly every age,ethnic,and gender group across the globe(Capizzi et al.,2020).TbIs are often sustained during a dynamic range of exposures to energetic environmental forces and as such outcomes are typically heterogeneous regarding severity and pathology(Capizzi et al.,2020).

关键词： sustained orange dynamic

1.37Gev α 粒子在^(12)C和^(40,42,44,48)Ca上的弹性及非弹性散射

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广西物理 1997年第3期18卷 8-14页

作者：柳继锋张禹顺杨云朝沈俊锋 barobson 澳大利亚国立大学物理科学与技术研究学院理论物理系广西师范大学物理系中国高等科学技术中心中国科学院高能物理研究所浙江轻工业学院物理系浙江大学物理系

以Ｇｌａｕｂｅｒ理论分析了１３７Ｇｅｖα粒子在１２Ｃ和４０，４２，４４，４８Ｃａ上的弹性散射和非弹性散射数据。采用Ｔａｓｉｅ模型处理到单声子能级的集体激发。考虑了弹性道与非弹性道之间的耦合效应，表明核子—核子弹性散... 详细信息

以Ｇｌａｕｂｅｒ理论分析了１３７Ｇｅｖα粒子在１２Ｃ和４０，４２，４４，４８Ｃａ上的弹性散射和非弹性散射数据。采用Ｔａｓｉｅ模型处理到单声子能级的集体激发。考虑了弹性道与非弹性道之间的耦合效应，表明核子—核子弹性散射的相变化使计算微分截面增大。

关键词：非弹性散射 α粒子散射振幅微分截面实验数据相变化强度参数核散射计算结果最小值

ZnO/CeO_(2)/carbon xerogel composites with direct Z-scheme heterojunctions:Enhancing photocatalytic remediation of 4-chlorophenol under visible light

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Journal of Rare Earths 2024年第2期42卷 314-322,I0003页

作者： Nicolas Perciani de Moraes Maite birkett de Campos Sanmartin robson da Silva Rocha Abner de Siervo Marcos Roberto de Vasconcelos Lanza D.Amaranatha Reddy Lianqing Yu Liana Alvares Rodrigues Escola de Engenharia de Lorena-EEL/USP Estrada Municipal do Campinho S/NCEP 12602-810LorenaSao PauloBrazil Institute of Physics"Gleb Wataghin" Applied Physics DepartmentState University of Campinas13083-859CampinasSPBrazi Instituto de Quimica de Sao Carlos Universidade de Sao PauloAv.Trab.Sao Carlense400-Parque Arnold SchimidtSao CarlosSP13566-590Spain Department of Sciences Indian Institute of Information Technology Design and ManufacturingKurnoolAndhra Pradesh518007India School of Materials Science and Engineering China University of PetroleumQingdao266580China

This paper aims to create visible light driven ternary photocatalysts using zinc oxide(ZnO),cerium(IV)oxide(CeO_(2)),and carbon xerogel(CX) as constituent *** use of CeO_(2) is based on the creation of direct-Z-scheme heterojunctions with the ZnO and the consequent diminishing of charge recombination,whereas the carbon xerogel inclusion is predicted to minimize bandgap energy,decrease electro n-hole reco mbination,and boost specific surface *** re,the choice of the black-wattle tannin as a carbonaceous precursor was targeted at the development of an environmentally friendly and affordable *** existence of the hexagonal phase of zinc oxide and cubic structure of the cerium(IV) oxide in the ternary material was confirmed by X-ray diffractometry and X-ray photoelectron spectroscopy,with the latter also suggesting chemical bonding between the ZnO and the CX due to the creation of zinc oxycarbide *** inclusion of the carbon xerogel provokes a significant modification in the morphology of the ternary material,resulting in an increased surface area and smaller particle *** CX/ZnO-CeO_(2) ternary composite obtains the highest photocatalytic efficiency among all the materials studied,degrading 100% of 4-chlorophenol under simulated sunlight and 68% under visible radiation,after 5 *** increased photocatalytic activity can be attributed to the formation of direct Z-scheme heterojunctions between the semiconductors,higher visible light response,and higher specific surface area,as evidenced by the results obtained by active radical scavenging,chronoamperometry,diffuse reflectance spectroscopy,and N_(2) adsorption-desorption isotherms.

关键词： Zinc oxide Cerium(Ⅳ)oxide Carbon xerogel Photocatalysis Direct Z-scheme heterojunction 4-Chlorophenol Rare earths

Extended quantum molecular dynamics model predicts new breathing modes in 36Ar bubble nuclei

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Nuclear Science and Techniques 2024年第10期35卷 268-270页

作者： Joseph b.Natowitz Department of Chemistry and Cyclotron Institute Texas A&M UniversityCollege Station

In theoretical investigations of36Ar published by Ge Ren et al.（Phys Lett b 138990,2024）,36Ar bubble nuclei,char acterized by central density depletions,were studied using the extended quantum molecular dynamics *** novel density distributions—microbubble,bubble,and cluster resonances—were identified,each showing distinc spectral signatures in the gamma-ray decay spectrum o the isoscalar monopole ***,the oscillation frequency of the bubble mode mirrors macroscopic bubble dynamics,bridging classical and quantum phenomena in atomic *** exploration of exotic nuclei,driven by advances in large-scale radioactive ion beam facilities,reshapes nuclea physics,particularly as regards the complex structures and behaviors of atomic *** structures and deforma tions[1–3]challenge traditional models.

关键词： bubble quantum dynamics

black hole shadows in Einstein-bel-Robinson gravity

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Chinese Physics C 2024年第5期48卷 272-283页

作者： b.Hamil b.C.Lütfüoğlu Laboratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physics University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

Gravity models given by higher-order scalar curvature corrections are believed to bear important consequences. Einstein-bel-Robinson (EbR) gravity with quartic curvature modification motivated Sajadi et al. to explore static spherically symmetric black hole solutions using perturbative methods. In this study, inspired by their work, we investigate AdS black hole shadows in EbR gravity and demonstrate how the gravity parameter alters the energy emission rate. Finally, we address the same problem in the presence of plasma, because the black holes are thought to be surrounded by a medium that changes the geodesic of photons.

关键词： black hole shadows Einstein-bel-Robinson gravity plasma

Water Vapor Information from Satellite and Its Applications

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Advances in Atmospheric Sciences 2024年第1期41卷 188-189页

作者： b.J.SOHN School of Earth and Environmental Sciences Seoul National UniversitySeoul 08826Korea

Water vapor is a critical component of the hydrological cycle because it plays a vital role in transporting water from one part of the cycle to *** vapor evaporated from surfaces such as oceans,lakes,and rivers conden... 详细信息

关键词： motion oceans lakes

Soils in extraterrestrial space: Need for studies under microgravity

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Pedosphere 2024年第1期34卷 13-14页

作者： M.b.KIRKHAM Department of Agronomy Kansas State UniversityManhattan KS 66506USA

With the increased interest of plants in space, gravity cannot be ignored when studying soil-plant-water relations. Therefore, it is important to understand the water relations of soils under zero gravity in space or under reduced gravity on the Moon or Mars. This paper outlines the problems of moving water in soils under zero gravity or microgravity, as well as growing plants in these soils. It is suggested that microgravity experiments could be done on Earth using both soils and plants. Results from such experiments could be used to grow plants when mankind establishes bases on the Moon and Mars.

关键词： soils soil bases