检索结果-南通市图书馆

Gravity-Driven Listric Growth Fault and Sedimentation in the Lagoa do Peixe, Rio Grande do Sul Coastal Plain, Brazil

引用

Open Journal of Geology 2024年第4期14卷 594-616页

作者： Bruno Silva da Fontoura Adelir José Strieder Iran Carlos Stalliviere Corrêa Paulo Rogério Mendes Instituto de Geociê ncias UFRGS Porto Alegre Brazil Engenharia Geoló gica Centro de Engenharias UFPel Pelotas Brasil HIDROSERV— Servi&#231os Geol&#243gicos e Geof&#237sicos Ltda. Porto Alegre Brazil

High frequency, high resolution GPR surveys are successfully applied to investigate near-surface stratification architecture of sedimentary units in coastal plains and to define their depositional conditions. However, low frequency GPR surveys to investigate fault-related depositional systems at greater depths are scarce. This survey was designed investigate a > 100 km long linear escarpment that controls the northwest margin of the Lagoa do Peixe, an important lagoon in Rio Grande do Sul Coastal Plain (RGSCP, Brazil). The traditional approach points that RGSCP was developed by juxtaposition of four lagoons/barrier systems as consequence of sea level changes;no deformational structure is admitted to exist before. The low frequency GPR (50 MHz, RTA antenna) and geological surveys carried out in the RGSCP showed the existence of a large, gravity-driven listric growth fault controlling the Lagoa do Peixe escarpment and hangingwall sedimentation. The radargrams in four subareas along the Lagoa do Peixe Growth Fault could be interpreted following the seismic expression of rift-related depositional systems. The radargrams enabled to distinguish three main lagoonal deposition radarfacies. The lower lagoonal radarfacies is a convex upward unit, thicker close to growth fault;the radarfacies geometry indicates that fault displacement rate surpasses the sedimentation rate, and its upper stratum is aged ~3500 l4C years BP. The second lagoonal radarfacies is a triangular wedge restricted to the lagoon depocenter, whose geometry indicates that fault displacement and the sedimentation rates kept pace. The upper lagoonal radarfacies is being deposited since 1060 ± 70 l4C years BP, under sedimentation rate higher than fault displacement rate. The results indicate that low frequency GPR surveys can help in investigating fault-related depositional systems in coastal zones. They also point to a new approach in dealing with RGSCP stratigraphy.

关键词： GPR (Ground-Penetrating Radar) Growth Fault Sedimentation Radarfacies Coastal Plain

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

Gravity Fault Subsidence and Beach Ridges Progradation in Quinta-Cassino (RS) Coastal Plain, Brazil

引用

Open Journal of Geology 2024年第2期14卷 177-195页

作者： Bruno Silva da Fontoura Adelir José Strieder Iran Carlos Stalliviere Corrêa Paulo Rogério Mendes Alexandre Felipe Bruch Angélica Cirolini Programa de Pós-Graduaç &#227o em Geoci&#234ncias (PPGeo) Instituto de Geoci&#234ncias UFRGS Porto Alegre Brazil Engenharia Geológica Centro de Engenharias UFPel Pra&#231a Domingos Rodrigues 2 Pelotas Brasil HIDROSERV-Serviç os Geológicos e Geofísicos Ltda. Rua Senegal 152 Porto Alegre Brazil Colégio Politécnico UFSM Santa Maria Brasil

Ground penetrating radar (GPR) surveys have being applied to investigate very near-surface stratification of sedimentary units in coastal plains and to define their depositional conditions. This paper presents, however, low-frequency GPR survey to investigate fault-related depositional systems at greater depths. The Quinta-Cassino area in the Rio Grande do Sul Coastal Plain (RGSCP, Brazil) shows a wide strandplain that is made off by very long, continuous, and linear geomorphic features (beach ridges). This strandplain extends for ~70 km southward. The beach ridges show low-angle truncations against the Quinta escarpment, and also truncations in the strandplain. The traditional approach points that RGSCP was developed by juxtaposition of four lagoons/barrier systems as consequence of sea level changes;previous model assumes that no deformational episode occurred in RGSCP. The geophysical and geological surveys carried out in this area showed the existence of listric fault controlling the beach ridges in the escarpments and hanging-wall blocks. The radargrams could distinguish Pleistocene basement unit anticlockwise rotation, thickening of beach ridges radarfacies close to listric normal faults, and horst structures. These deformational features indicate that the extensional zone of a large-scale gravity-driven structure controlled the mechanical subsidence, the Holocene sedimentation and its stratigraphic and geomorphic features in the Quinta-Cassino area to build up an asymmetric delta. The results point to a new approach in dealing with RGSCP Holocene evolution.

关键词： Gravity Tectonics Normal Faults Ground Penetrating Radar Survey Beach-Ridges Progradation

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

Epidemiology of upper gastrointestinal symptoms in Brazil(Epi Gastro):A population-based study according to sex and age group

引用

World Journal of Gastroenterology 2014年第46期20卷 17388-17398页

作者： Maria do Rosário Dias de Oliveira Latorre Aline Medeiros da Silva Décio Chinzon Jaime N Eisig Telma RP Dias-Bastos Department of Epidemiology Faculty of Public HealthUniversity of S?o PauloS?o Paulo 01246-904Brazil janssen-cilag farmacêutica ltda. S?o Paulo 05501-900Brazil Department of Gastroenterology Faculty of MedicineUniversity of S?o PauloS?o Paulo 05409-001Brazil

AIM:To determine the prevalences of symptoms consistent with gastroesophageal reflux disease(GERD)and dyspepsia in South ***:A telephone survey was conducted among adult owners of land-based telephones in S?o Paulo,Brazil,using previously validated computer-assisted sampling and survey *** Portugueselanguage survey included(1)sociodemographic characteristics(e.g.,weight,height,smoking)and comorbidities;(2)dietary habits;(3)presence of symptoms consistent with GERD or dyspepsia within the prior 3mo;and(4)use of medications and other therapies to manage *** were stratified post-hoc into three homogeneous geographical regions of S?o Paulo according to the Social Exclusion Indices of the districts and postal *** response data from each respondent were weighted by the numbers of adults and landline telephones in each *** analyses were weighted to account for sampling design and to be representative of the S?o Paulo population according to city census ***:Among 4570 households contacted,an adult from 3050(66.7%)agreed to *** nonresponse rate was 33.3%.The mean(SE)respondent age was 42.6(16.0)*** than half of all respondents were women(53.1%),aged 18 through 49 years(66.7%),married or cohabitating(52.5%),and/or above normal-weight standards(i.e.,35.3%overweight and 16.3%obese).A total of 26.5%of women were *** than 20%of respondents reported highly frequent symptoms consistent with GERD(e.g.,gastric burning sensation=20.8%)or dyspepsia(e.g.,abdominal swelling/distension=20.9%)at least once per *** of these symptoms were significantly(approximately 1.5-to 2.0-fold)higher among women than men but did not vary significantly as a function of advancing *** instance,14.1%of women reported that they experienced stomach burning(symptom of GERD)at least twice per week,compared to 8.4%of men(P=0.012 byχ2 test).A total of 15.7%of women reported that they experienced abdomi

关键词： Dyspepsia Epidemiology Esophagus Gastroesophageal reflux Prevalence Stomach

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

Snapshot Survey of the Presence of Perfluoroalkyl Substances in Products, Articles, and the Environment in Ecuador

引用

Engineering 2024年第6期37卷 49-61页

作者： Heidelore Fiedler Luis Vega-Bustillos Jenny Arias-Pastrano Lander Vinicio Pérez-Aldás Jose Castro-Díaz MTM Research Centre School of Science and TechnologyÖrebro UniversityÖrebro 70182Sweden Undersecretariat of Environmental Quality Ministry of EnvironmentWater and Ecological Transition of EcuadorQuito 170525Ecuador Department of Environmental Chemistry The Technical University of AmbatoHuachi CampusAmbato 180207Ecuador Alternativavision Ambiental Cia.ltda. Mexico 03100Mexico

The Stockholm Convention on Persistent Organic Pollutants(POPs)is a legally binding instrument for 186 Parties(status:April 2023).Accordingly,among other responsibilities,countries are obliged to report the production,import,or export of the POPs listed in Annexes A,B,or C;provide information to registers;maintain inventories;and monitor the presence of POPs in the *** the broader context of international chemicals and waste management,producer responsibilities,harmonized reporting,and compliance with national and international regulations,Ecuador has addressed the newly listed group of perfluorinated alkyl substances(PFAS)in its national implementation plan and sent selected products from its national market for PFAS *** products analyzed came from the initially listed fields of specific exemptions and acceptable purposes,including:fire-fighting foams;photographic aids;greasers/degreasers;various kinds of paper/packaging;textiles;and leather,coatings,cleaners,metal plating,and *** results showed that the three PFAS presently listed in the Stockholm Convention could be quantified in only a few samples;additional PFAS,not yet listed in the Convention also had low detection *** the number of samples was limited,the samples covered a large spectrum of sample matrices,making it possible to conclude that—once these products become waste and are regulated under the Basel Convention—they would not constitute a disposal ***,verification of the presence of PFAS in products on the market is expected to pose an analytical challenge for both,developed and developing countries.

关键词： Emerging or newly listed POPs Stockholm Convention Products and articles PFAS analysis Developing countries

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

Decreased morphogenetic potential in peach palm stem-like cells in long-term in vitro conditions

引用

Journal of Forestry Research 2020年第2期31卷 485-495页

作者： Erika Mendes Graner Gilvano Ebling Brondani Cristina Vieira de Almeida Katherine Derlene Batagin-Piotto Marcilio de Almeida Luiz de Queiroz College of Agriculture University of Sao PauloPiracicabaSPBrazil Department of Forest Sciences Campus UniversitarioFederal University of LavrasLavrasMGBrazil In Vitro Palm(Consulting Study and Biological Development Ltda.)PiracicabaSPBrazil

Peach palm(Bactris gasipaes Kunth)has been micropropagated from pre-procambial cells that provide stem-like cell niches,(i.e.,pre-procambial cells),multipotent,pluripotent and totipotent for direct vascularization,adventitious buds and somatic embryogenesis,*** direct induction of adventitious buds and somatic embryogenesis reduces the frequency of mutations when compared to indirect ***-term in vitro cultivation of perennial species such as peach palm cause the clones to age and deteriorate;however,the consequences for morphogenesis potential are not fully *** morphogenic potential of peach palm clones established and in vitro cultivated for 8 years(regeneration of adventitious buds without callus formation)was investigated in leaves,roots and stem bases using histological and histochemical *** from long-term cultures(8-years-old)was compared to data from short-term cultures(1-year-old).Morphogenic pathways monitoring for direct induction of somatic embryos and adventitious buds revealed a strong morphogenic reduction potential in the pre-procambial cells,parenchyma cells in the proximal region of stem bases,and external cells of leaf *** cells of shoot apical meristems and pre-procambial cells commit cell reprogramming to the undifferentiated state and subsequent acquisition of cellular *** results are applicable in the micropropagation of peach palm,with consideration to obtaining clones and their long-term in vitro culture.

关键词： Micropropagation Multipotency Pluripotency Totipotency Pre-procambial cells Peach palm Bactris gasipaes

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

Digitally Mapping the Hydro-Topographical Context for Community Planning: A Case Study for the Upper Choapa River Watershed in Chile

引用

Journal of Geoscience and Environment Protection 2017年第3期5卷 265-277页

作者： Gustavo Moran Pedro Paolini Cuadra Valenty Gonzalez John-Paul Arp Paul A. Arp Surnorte Inc. Aurora Canada LP Consultores ltda. Santiago Chile Creativa-Consultores ltda. Ciudad de Panama Panama Faculty of Forestry and Environmental Management University of New Brunswick Fredericton Canada

Urban and non-urban settlements in many regions are usually located on the lands bordering shores, rivers, canals or streams. However, housing complexes, landfills, and areas for agriculture and mining are often assigned to locations without sufficiently detailed hydrographic information about subsequent potential if not actual flow and flooding impacts. Yet, for sustainable community planning with emphasis on harmonizing social, economic, environmental and institutional aspects, such information is essential. This article demonstrates how this need can in part be accommodated by way of digital elevation and wet-area modelling and mapping using the upper component of the Choapa watershed in Chile as a case study. The terrain of this area has sharply incised valleys, with communities, fields and roads strung narrowly along the Choapa River and its tributaries. Above these locations along the Estero de Los Pelambres near the Chile-Argentina border are major mining and mineral refining activities. This article provides modelling and mapping details about the wet-to-moist area zonation along the upper Choapa River valleys, and addresses some of the mining-induced changes from 2000 to 2010.

关键词： Digital Elevation Modelling Flow-Channel and Wet-Areas Mapping Communications Mining Land-Use Settlements Hydrological Concerns

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

Spectral Properties and Optimality for Elementary Matrices

引用

Journal of the Operations Research Society of China 2018年第3期6卷 467-472页

作者： Ricardo Biloti João Daniel Palma Ramos Jin-Yun Yuan Department of Applied Mathematics University of Campinas&INCT-GPCampinas 13083-859Brazil Instituto Kumon de Educação ltda. São Paulo 04006-002Brazil Department of Mathematics Federal University of ParanáCuritiba 81531-980Brazil

A generalization of the Householder transformation,renamed as elementary matrix by ***:Unitary transformation of a nonsymmetric matrix,***,5(4),339–342,1958,was introduced by LaBudde(Math Comput 17(84):433–437,1963)as a tool to obtain a tridiagonal matrix similar to a given square *** of the free parameters of the transformation can be chosen to attain better numerical *** this work,we study the spectral properties of the *** also propose a special choice for free coefficients of that transformation to minimize its condition *** transformation with such suitable choice of parameters is called optimal.

关键词： Symmetric and triangular(ST)decomposition Non-symmetric system Elementary matrix Householder transformation

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

Probabilistic Seismic Risk Assessment in Manizales,Colombia: Quantifying Losses for Insurance Purposes

引用

International Journal of Disaster Risk Science 2017年第3期8卷 296-307页

作者： Mario A. Salgado-Gálvez Gabriel A. Bernal Daniela Zuloaga Mabel C. Marulanda Omar-Darío Cardona Sebastián Henao Centre Internacional de Metodes Numerics en Enginyeria(CIMNE) 08034 BarcelonaSpain INGENIAR ltda. BogotaD.C.110221Colombia Instituto de Estudios Ambientales(IDEA) Universidad Nacional de Colombia Sede ManizalesManizales 170004Colombia Universidad Nacional de Colombia Sede Manizales Manizales 170004Colombia

A fully probabilistic seismic risk assessment was developed in Manizales, Colombia, considering assets of different types. The first type includes elements that are part of the water and sewage network, and the second type includes public and private buildings. This assessment required the development of a probabilistic seismic hazard analysis that accounts for the dynamic soil response,assembling high resolution exposure databases, and the development of damage models for different types of elements. The economic appraisal of the exposed assets was developed together with specialists of the water utilities company of Manizales and the city administration. The risk assessment was performed using several Comprehensive Approach to Probabilistic Risk Assessment modules as well as the R-System, obtaining results in terms of traditional metrics such as loss exceedance curve, average annual loss, and probable maximum loss. For the case of pipelines, repair rates were also estimated. The results for the water and sewage network were used in activities related to the expansion and maintenance strategies, as well as for the exploration of financial retention and transfer alternatives using insurance schemes based on technical,probabilistic, and prospective damage and loss *** the case of the buildings, the results were used in the update of the technical premium values of the existing collective insurance scheme.

关键词： CAPRA Earthquake insurance Manizales (Colombia) Probabilistic seismic risk assessment Risk retention and transfer

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

Establishing a Hydrographic Framework for Watershed Management across Northern Chile

引用

Journal of Geographic Information System 2018年第5期10卷 539-561页

作者： Gustavo Moran Pedro Paolini Cuadra John-Paul Arp Paul A. Arp Surnorte Inc. Toronto Canadá LP Consultores ltda. Santiago Chile Faculty of Forestry & Environmental Management Fredericton Canada

This article demonstrates how currently available digital elevation (NASA SRTM;30 m resolution) and hourly global precipitation data (rain, snow;5 and 10 km resolution) can be used to hydrographically quantify the regional watershed management context across northern Chile. This is done through comprehensive derivations of flow direction, flow accumulation, flow channels, floodplain extent, depressions, and upslope watershed outlines. In turn, these derivations allow for estimating potential precipitation accumulations within any watershed, and turn these into subsequent storm-averaged discharge estimates at, e.g., at any road—flow-channel crossing points. This article elaborates on this by modelling and mapping hydrological conditions and subsequent storm damage at the regional scale and at select locations in terms of recent flood events on March 2015, May 2017, and June 2017. It was found that modelled flood extent and storm-estimated discharge volumes and rates generally conform to reported values including storm-caused damages within communities along the Huasco, Elqui, Limari, Copiapó and Salado rivers. This included the storm response assessment of six water reservoirs as these varied, as quantified, from normal (Puclaro, La Laguna, Cogoti), at capacity (La Paloma, Cogoli), and overflowing (Recoleta). The details of the local to regional assessments are presented in the form hydrologically explicit maps, figures and tables. Together, these attest to the general validity of the framework as introduced. Hydrometrically based stream-discharge calibrations would assist in further refining the approach, especially in terms of estimating local to regional run-off coefficients.

关键词： Northern Chile Watersheds Precipitation Digital Elevation Modelling Hydrographic Interpretations Storm Events

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

A geomorphological model of susceptibility to the effect of human interventions for environmental licensing determination(SHIELD)

引用

Geoscience Frontiers 2022年第2期13卷 284-294页

作者： Cristina I.Pereira Celene B.Milanes Ivan Correa Enzo Pranzini Benjamin Cuker Camilo M.Botero EAFIT University Earth Sciences DepartmentMedellínColombia Coastal Systems Research Group Playas Corporation Ltda.BogotáColombia Civil and Environmental Department Universidad De La CostaBarranquillaColombia Department of Earth Sciences University of FlorenceFirenzeItaly Department of Marine and Environmental Science Hampton UniversityHamptonUnited States University Sergio Arboleda School of LawSanta

Almost every country requires some form of environmental licensing prior to the inception of development projects that may affect the integrity of the environment and its social *** developed a new conceptual and methodological model to instruct the assessment of the potential impacts posed by proposed *** to Human Interventions for Environmental Licensing Determination(SHIELD)includes a novel geomorphological interpretation of the Environmental Impact Assessment(EIA).It considers the impact of human interventions on geomorphological processes and landscape functioning in the context of the entire ecosystem,going further than the classical concept of *** susceptibility of the site informs the screening stage,allowing local conditions to help define the criteria used in the ***,the level of detail of the environmental baseline is scoped by considering the degree of disturbance of natural processes posed by human *** this geomorphological susceptibility model on different kinds of environments would allow shifting the environmental licensing practices from the prevailing anthropocentric and static conception of the environment towards an Ecosystem *** addresses the need to improve the screening and scoping stages that form the basis of the rest of any *** introduces several innovations to EIA including the incorporation of fuzzy logic,a preassembled database of contributions form experts,and a shifting of emphasis from the type of proposed intervention to the type of environment and its relative susceptibility.

关键词： Processes and landforms Expert knowledge Ecosystem approach Screening Scoping

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：