检索结果-南通市图书馆

Landslide susceptibility mapping using the infinite slope,SHALSTAB,SINMAP,and TRIGRS models in Serra do Mar,Brazil

Journal of Mountain Science 2022年第4期19卷 1018-1036页

作者： Thiago Machado do PINHO Oswaldo AUGUSTO filho University of Sao Paulo Sao CarlosSP13566-590Brazil

Slope failure triggered by heavy rainfall is very common in tropical and subtropical regions and a cause of major social and economic *** susceptibility maps can be generated using geographical information systems(GIS)and limit equilibrium slope stability models coupled or not to hydrological *** study investigated the efficacy of four models used for slope stability analysis in predicting landslide-susceptible areas in a GIS *** selected models are the infinite slope,the shallow slope stability model(SHALSTAB),the stability index mapping(SINMAP),and the transient rainfall infiltration and grid-based regional slope-stability(TRIGRS).For comparisons,the authors(a)included the infinite slope equation in all models,(b)clearly defined input parameters and failure triggering mechanisms for each simulation(soil depth,water table height,rainfall intensity),(c)determined appropriate values for each model to obtain stability levels that represented similar hydrogeotechnical conditions,and(d)considered upper-third areas of landslide scars to estimate the reliability of susceptibility maps using validation *** intense rainfall event occurred in Serra do Mar,Brazil in January 2014 triggered hundreds of landslides and was used for back analysis and evaluation of the slope stability analysis *** rainfall intensity is not considered,the four models produced very similar *** most reliable landslide susceptibility map was generated using TRIGRS and considering the granite residual granite soils geological-geotechnical unit,subjected to a rainfall intensity of 210 mm for 2 h under unsaturated conditions.

关键词： Geographical information system Safety factor Heavy rainfall Geomechanical parameters Residual soils of phyllite and granite Serra do Mar

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

When identity is not reached:two cases from Brasilia

引用

Forensic Sciences Research 2022年第4期7卷 623-627页

作者： Aluisio Trindade filho Medicolegal Institute Civil Police of Federal DistrictBrasiliaBrazil

When human remains are examined,three questions always need to be answered:who is the deceased,what was the cause of death,and when did the death occur,the former question being the most *** identification of half or fully skeletonized human remains is a complex process and always requires the use of methods that allow individualization beyond any reasonable ***,no matter how vigorous the search for identification,this is not always ***,the author presents two cases in which identification was exhaustively attempted but not achieved despite the existence of an osteo implanted device in one case and the presence of documents in the *** one case,we could not find a potential identity for the deceased,while in the other we found a possible identity but not a family member to provide antemortem data to confirm *** the scientific literature tends to favour the publication of cases with favourable outcomes,one should also learn from failures,which is the reason why the author decided to publish his unsuccessful *** reasons for the failures are discussed,as well as methodological improvements for future cases.

关键词： Forensic sciences forensic anthropology human identification failure missing person database primary methods of identification

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Metamorphic disturbances of magnetite chemistry and the Sm-Nd isotopic system of reworked Archean iron formations from NE Brazil

引用

Geoscience Frontiers 2022年第5期13卷 227-241页

作者： Joice Dias de Moraes Pedro Cordeiro Eduardo Abrahão filho Juliana Rezende Oliveira Carlos Victor Rios da Silva filho Instituto de Geociências Universidade de Brasília(UnB)70910-900 BrasíliaDFBrazil Department of Mining Engineering Pontifical Catholic University of Chile7820436 SantiagoChile

Iron formations are valuable archives of sedimentary conditions and post-depositional ***,geochemical proxies commonly used to determine genetic characteristics can be variably modified during metamorphism and deformation,hampering their use as records of regional geological *** work focuses on strongly reworked magnetite-quartz-rich rocks from the São Josédo Campestre Massif,one of the oldest fragments of preserved crust in South *** genetic classification of these magnetite-quartz-rich rocks is not straightforward because primary assemblages and textures were variably modified by granulite facies metamorphism during a regional Paleoproterozoic migmatization *** address genetic ambiguities,we analyzed their magnetite and pyroxene chemistry,wholerock geochemistry,and Sm-Nd *** chemistry indicates that pyroxene-poor iron formations(Type B)are low in trace elements such as Ti,Al,V,and Mn,suggesting a chemical similarity to iron formations *** contrast,magnetites from pyroxene-enriched Type A iron formations are rich in trace elements and more akin to magnetite crystallized from higher temperature systems,such as skarn and ***^(147)Sm/^(144)Nd of these rocks show substantial variation even at the outcrop scale,indicating a locally-controlled,highly heterogeneous mixture of Archean,Paleoproterozoic,and Neoproterozoic ***,our geochemical tools point out to heterogenous signatures of these magnetitequartz rocks and proxies compatible with both low and high-temperature conditions and age of deposition spanning sources from the Archean to the *** interpret that the studied São Josédo Campestre magnetite-quartz rocks represent Archean iron formations with original magnetite chemistry and isotopic signatures variably modified by metamorphism and by at least one deformation-related hydrothermal *** results contrast with similar examples from China and Greenland where iron formation

关键词： Metamorphic disturbances of magnetite chemistry and the Sm-Nd isotopic system of reworked Archean iron formations from NE Brazil

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Urbanization drives adaptive evolution in a Neotropical bird

引用

Current Zoology 2023年第5期69卷 607-619页

作者： Rilquer Mascarenhas Pedro Milet Meirelles Henrique Batalha-filho National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution(INCT IN-TREE) Instituto de BiologiaUniversidade Federal da Bahia40170-115 SalvadorBahiaBrazil

Urbanization has dramatic impacts on natural habitats and such changes may potentially drive local adaptation of urban *** change has been specifically shown to facilitate the fast adaptation of birds to changing environments,but few studies have investigated the genetic mechanisms of this *** investigations could provide insights into questions about both evolutionary theory and management of urban *** this study,we investigated whether local adaptation has occurred in urban populations of a Neotropical bird species,Coereba flaveola,specifically addressing whether observed behavioral adaptations are correlated to genetic signatures of natural *** answer this question,we sampled 24 individuals in urban and rural environments,and searched for selected loci through a genome-scan approach based on RADseq genomic data,generated and assembled using a reference genome for the *** recovered 46 loci as putative selection outliers,and 30 of them were identified as associated with biological processes possibly related to urban adaptation,such as the regulation of energetic metabolism,regulation of genetic expression,and changes in the immunological ***,genes involved in the development of the nervous system showed signatures of selection,suggesting a link between behavioral and genetic *** findings,in conjunction with similar results in previous studies,support the idea that cities provide a similar selective pressure on urban populations and that behavioral plasticity may be enhanced through genetic changes in urban populations.

关键词： behavioral adaptation phenotypic plasticity selection selective sweep South America

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

New directions for artificial intelligence:human,machine,biological,and quantum intelligence

引用

Frontiers of Information Technology & Electronic Engineering 2022年第6期23卷 984-990页

作者： Li WEIGANG Lirian Michi ENAMOTO Denise Leyi LI Geraldo Pereira ROCHA filho Department of Computer Science Uniuersily of BrasiliaBasilia-DF 70910-900Bazil Faculty of Economics AdministrationAccounting and ActuariesUnversity of Sao PauloSao Paulo 05508-010Bazil

1 Introduction This comment reviews the“once learning”mechanism(OLM)that was proposed by Weigang(1998),the subsequent success of“one-shot learning”in object categories(Li FF et al.,2003),and“youonly lookonce”(YO... 详细信息

关键词： directions intelligence subsequent

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Distinct T helper cell-mediated antitumor immunity:T helper 2 cells in focus

引用

Cancer Pathogenesis and Therapy 2023年第1期1卷 76-86页

作者： Rafael Cardoso maciel Costa Silva Marcela Freitas Lopes Leonardo Holanda Travassos Laboratory of Immunoreceptors and Signaling Carlos Chagas Filho Biophysics InstituteFederal University of Rio de JaneiroRio de Janeiro 21941-902Brazil Laboratory of Immunity Biology George DosReis Carlos Chagas Filho Biophysics InstituteFederal University of Rio de JaneiroRio de Janeiro 21941-902Brazil

The adaptive arm of the immune system is crucial for appropriate antitumor immune *** is generally accepted that clusters of differentiation 4^(+)(CD4^(+))T cells,which mediate T helper(Th)1 immunity(type 1 immunity),are the primary Th cell subtype associated with tumor *** this review,we discuss evidence showing that antitumor immunity and better prognosis can be associated with distinct Th cell subtypes in experimental mouse models and humans,with a focus on Th2 *** aim of this review is to provide an overview and understanding of the mechanisms associated with different tumor outcomes in the face of immune responses by focusing on the(1)site of tumor development,(2)tumor properties(i.e.,tumor metabolism and cytokine receptor expression),and(3)type of immune response that the tumor initially ***,we discuss how low-tolerance organs,such as lungs and brains,might benefit from a less tissue-destructive immune response mediated by Th2 *** addition,Th2 cells antitumor effects can be independent of CD8^(+)T cells,which would circumvent some of the immune escape mechanisms that tumor cells possess,like low expression of major histocompatibility-I(MHC-I).Finally,this review aims to stimulate further studies on the role of Th2 cells in antitumor immunity and briefly discusses emerging treatment options.

关键词： Cancer Immunology Adaptive immunity Immunotherapy Immunogenetics Antitumor immune response

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Global Leprosy Assessment Index(GLAI):A new approach for measuring the severity of disease in Brazil

引用

Infectious Medicine 2023年第2期2卷 128-135页

作者： Lucas Silva Thiago Rocha Dalson Figueiredo filho Department of Medicine Universidade Estadual de Ciências da Saúde do Estado de AlagoasMaceio 57010-382ALBrazil Department of Political Science Universidade Federal de PernambucoRecife 50670-901PEBrazil

Background:In Brazil,the Ministry of Health(MH)monitors leprosy using 15 indicators,with the aim of imple-menting and evaluating evidence-based public ***,an excessive number of variables can compli-cate the definition of objectives and verification of epidemiological ***:In this paper,we develop the Global Leprosy Assessment Index(GLAI),a composite measure that integrates two key dimensions for the control the disease:epidemiological and *** a confirmatory factor analysis model to examine 2020 state-level data,we have standardized GLAI to a range of 0 to ***:Higher values within this range indicate a greater severity of the *** mean value of the GLAI was 0.67,with a standard deviation of *** has the highest value,followed by Paraíba with 0.88 while Tocantins records the lowest value of the indicator,followed by Mato Grosso with *** epidemiological and operational indicators have a positive but statistically insignificant correlation(r=0.25;p-value=0.20).Conclusions:The development of evidence-based public policies depends on the availability of valid and reliable *** GLAI presented in this paper is easily reproducible and can be used to monitor the disease with disaggregated ***,the GLAI has the potential to serve as a more robust parameter for evaluating the impact of actions designed to eradicate leprosy in Brazil.

关键词： Leprosy Transmissible disease control Public health policy Health indicator Factor analysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Population structure of Araucaria angustifolia under distinct forest protection status:implications for management and conservation

引用

林业研究:英文版 2023年第5期34卷 1437-1446页

作者： Vinicius Costa Cysneiros Allan Libanio Pelissari Sylvio Pellico Netto Sebastiao do Amaral Machado Afonso Figueiredo filho Departamento de Agricultura Biodiversidade e FlorestasUniversidade Federal de Santa Catarina-UFSCRodovia Ulysses GaboardiKm 03CuritibanosSC 89520-000Brazil Departamento de Ciencias Florestais Universidade Federal do Paraná-UFPRAv.Prof.Lothario Meissner632CuritibaPR 80210-170Brazil Departamento de Engenharia Florestal Universidade Estadual do Centro-Oeste-UNICENTROPR-153Km 7IratiPR 84500-000Brazil

Araucaria angustifolia is the dominant coniferous species in Brazil,a long-lived pioneer species and a supplier of valuable timber and non-timber products,which gives it key-species *** study examines how *** population structure affects the stand structure,and whether these relationships differ between protected and unprotected *** study was carried out on two protection status forests(national forest and urban forest)in a region of Atlantic mixed forest in ParanáState,southern *** coefficient and the Weibull shape parameter described the population structure and its effects on species diversity and biomass *** diameter distribution differed significantly between forests,with unbalanced structure in both,although regeneration was more abundant in the protected *** positively affected aboveground biomass whereas shape negatively affected it and species *** relationships differed between protected and unprotected *** effect of *** populations on stand structure was conditioned on protection ***-growth populations may have lower diversity and biomass stock even supporting large ***,old-growth forests,can lead to wood loss through mortality,senescence,and declining populations,representing the waste of a valuable timber *** findings provide useful knowledge for forest management,species conservation,and the carbon market.

关键词： Key species Diameter distribution Weibull shape parameter Aboveground biomass

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Can rainfall seasonality trigger soil water repellency in a tropical riparian forest?

引用

Journal of Forestry Research 2023年第3期34卷 773-780页

作者： Gleicon Queiroz de Brito Johnny Rodrigues de Melo Murta Sérgio Fernandes Mendonca filho Luiz Felippe Salemi Núcleo de Estudos e Pesquisas Ambientais e Limnológicas(NEPAL) Faculdade UnB de Planaltina(FUP)Universidade de Brasília(UnB)DFVila Nossa Senhora de FátimaÁrea Universitária 1Planaltina 73345-010Brazil

Though riparian areas generally have a shallow water table and higher soil moisture compared to up slope areas,climatic seasonality may trigger water repellency in tropical riparian forests,which,if persistent,could negatively affect essential ecosystem functions related to water resources protection such as reduced overland-flow,sediment transport,and nutrient *** objective of this study was to answer the following:can tropical riparian forests develop water repellency?If so,does water repellency affect infiltration on a seasonal basis?For this,water repellency and infiltration were measured in a grid of 72points during a dry and a wet month of a tropical riparian forest with a shallow water table in a region with highly marked climatic *** repellency and infiltration were significantly different between the wet and dry *** repellency affected negatively infiltration in the dry month,its effect in the wet month was *** a result,a higher infiltration capacity was observed over the wet *** research has claimed that the development and persistence of repellency in soils could promote other hydrological processes such as overland *** findings shown here demonstrate that such phenomenon does not persist longer than the dry season.

关键词： Hydrophobicity Gallery forest Aquifer recharge Climate change Erosion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Crop residues: applications of lignocellulosic biomass in the context of a biorefinery

引用

Frontiers in Energy 2022年第2期16卷 224-245页

作者： Maria Carolina ANDRADE Caio de Oliveira GORGULHO SILVA Leonora Rios de SOUZA MOREIRA Edivaldo Ximenes FERREIRA filho Laboratory of Enzymology Department of Cellular BiologyUniversity of BrasiliaBrasiliaDFBrazil

Interest in lignocellulosic biomass conversion technologies has increased recently because of their potential to reduce the dependency on non-renewable feedstocks. Residues from a variety of crops are the major source of lignocellulose, which is being produced in increasingly large quantities worldwide. The commercial exploitation of crop residues as feedstocks for biorefineries which could be used to produce a variety of goods such as biofuels, biochemicals, bioplastics, and enzymes is an attractive approach not only for adding value to residues but also for providing renewable products required by the expanding bioeconomy market. Moreover, the implementation of biorefineries in different regions has the potential to add value to the specific crop residues produced in the region. In this review, several aspects of crop residue application in biorefineries are discussed, including the role of crop residues in the bioeconomy and circular economy concepts, the main technical aspects of crop residue conversion in biorefineries, the main crop residues generated in different regions of the world and their availability, the potential value-added bioproducts that can be extracted or produced from each crop residue, and the major advantages and challenges associated with crop residue utilization in biorefineries. Despite their potential, most biomass refining technologies are not sufficiently advanced or financially viable. Several technical obstacles, especially with regard to crop residue collection, handling, and pre-treatment, prevent the implementation of biorefineries on a commercial scale. Further research is needed to resolve these scale-up-related challenges. Increased governmental incentives and bioeconomic strategies are expected to boost the biorefinery market and the cost competitiveness of biorefinery products.

关键词： crop residue biorefinery bioproduct biomass circular bioeconomy enzyme

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：