bluuebunny/crossref_metadata_2025 huggingface dataset:
A Web-Based Serious Game for Health to Reduce Perioperative Anxiety and Pain in Children (CliniPup): Pilot Randomized Controlled Trial
Authors: Buffel Connor , van Aalst June , Bangels Anne-Marie , Toelen Jaan , Allegaert Karel , Verschueren Sarah , Vander Stichele Geert
Published: April 2019

Background

As pediatric ambulatory surgeries are rising and existing methods to reduce perioperative anxiety and pain are lacking in this population, a serious game for health (SGH), CliniPup, was developed to address this unmet need. CliniPup was generated using the SERES framework for serious game development.

Objective

The goal of the research was to clinically evaluate CliniPup as an adjunct therapy to existing pharmacological interventions aimed at reducing perioperative anxiety and pain in children undergoing ambulatory surgery.

Methods

CliniPup was evaluated in a prospective randomized controlled pilot trial in 20 children aged 6 to 10 years who underwent elective surgery and their parents. Study participants were randomly assigned to the test (n=12) or control group (n=8). Children in the test group played CliniPup 2 days prior to surgery, and children in the control group received standard of care. On the day of surgery, pediatric anxiety was measured with the modified Yale Preoperative Anxiety Scale and parental anxiety was assessed with the State-Trait Anxiety Inventory. Pediatric postoperative pain was assessed by the Wong-Baker Faces Pain Rating Scale. Child and parent user experience and satisfaction were also evaluated in the test group using structured questionnaires.

Results

Despite the small sample, preoperative anxiety scores were significantly lower (P=.01) in children who played CliniPup prior to surgery compared to controls. Parental preoperative anxiety scores were also lower in the test group (P=.10) but did not reach significance. No significant differences were observed in postoperative pain scores between groups (P=.54). The evaluation of user experience and satisfaction revealed that both children and parents were satisfied with CliniPup and would recommend the game to peers.

Conclusions

Results of the pilot trial introduce CliniPup as a potentially effective and attractive adjunct therapy to reduce preoperative anxiety in children undergoing ambulatory surgery with a trend toward positive impact on parental preoperative anxiety. These results support the use of the SERES framework to generate an evidence-based SGH that results in positive health outcomes for patients. Based on these preliminary findings, we propose a research agenda to further develop and investigate this tool.

Trial Registration

ClinicalTrials.gov NCT03874442; https://clinicaltrials.gov/ct2/show/NCT03874442 (Archived by WebCite at http://www.webcitation.org/78KZab8qc)
Usability of a psychotherapeutic interactive gaming tool used in facial emotion recognition for people with schizophrenia (Preprint)
Authors: Tortadès Ingrid , Gonzalez Roberto , Alpiste Francesc , Fernandez Joaquín , Torner Jordi , Mar Garcia-Franco , Martín-Martínez José R. , Vilamala Sònia , Escandell Maria J. , Casas-Anguera Emma , Prat Gemma , Ochoa Susana
Published: April 2019

BACKGROUND

Emotional Recognition (ER) is one of the areas most affected in people with schizophrenia. However, there are no software tools available for the assessment of ER. The interactive software program ‘Feeling Master’ (a cartoon facial recognition tool) was developed to investigate the deficit in facial emotion recognition (FER) with a sample of patients with schizophrenia in a pilot project framework.

OBJECTIVE

The aim of the study was to test the usability of ‘Feeling Master’ as a psychotherapeutic interactive gaming tool for the assessment of emotional recognition in people with schizophrenia compared with healthy people, and the relationship between FER, attributional style and theory of mind.

METHODS

Nineteen individuals with schizophrenia and 17 healthy control (HC) subjects completed the ‘Feeling Master’ including five emotions (happiness, sadness, anger, fear, and surprise). Regarding the group with schizophrenia they were evaluated with the Personal and Situational Attribution Questionnaire (IPSAQ) and the Hinting Task (Theory of Mind) to evaluate social cognition.

RESULTS

Patients with schizophrenia showed impairments in emotion recognition and they remained slower than the HC in the recognition of each emotion (P<.001). Regarding the impairment in the recognition of each emotion we only found a trend toward significance in error rates on fear discrimination (P=.07). And the correlations between correct response on the ‘Feeling Master’ and the hinting task showed significant values in the correlation of surprise and theory of mind (P=.046).

CONCLUSIONS

In conclusion, the study puts forward the usability of the ‘Feeling Master’ in FER for people with schizophrenia. These findings lend support to the notion that difficulties in emotion recognition are more prevalent in people with schizophrenia, and that these are associated with impairment in ToM, suggesting the potential utility of the FER in the rehabilitation of people with schizophrenia.
Study the Dissociation Enthalpies for R134a Clathrate Hydrate in Binary and Ternary Systems
Authors: AL Mukhtar Riyadh S. , AL Hemeri Shurooq T. , Mahmood Lina W.
Published: April 2019

في هذا البحث تم حساب حرارة التفكك  للنظام الثنائي المتكون من (غازالتبریدR134a+ماء) والنظام الثلاثي المتكون من (غازالتبرید R134a +ماء + ملح). حيث تم حساب حرارة التفكك لثلاثة أنواع من محاليل الأملاح هي كلوريد الصوديوم, بروميد البوتاسيوم وفلوريد الصوديوم عند ثلاثة تراكيز( 0,09, 0,17, 0,26) مول\كغم. معادلة كلابيرون استخدمت لحساب حرارة التفكك للنظام الثنائي والثلاثي اعتمادا على البيانات العملية للتفكك. وحصيلة الدراسة تمت باستخدام معادلة الحالة لـ (Peng and Robinson) لأيجاد تأثير معامل انضغاط الغاز (z) على حرارة التفكك. وكان ناتج النظام الثنائي هو(143,8) كجول\مول بدون  z وبوجود z (136,08) كجول \مول علما أن الانحراف بين القيمتين هو(5,3) %. معدل القيم المحسوبة للنظام الثلاثي بوجود كلوريد الصوديوم عند التراكيز الثلاثة للملح من دونz  بالمدى (146,7-154,1) كجول \مول ومع z (138,02-145,14 ) كجول \مول وكان معدل الانحراف بين القيمتين هو (8, 5 - 7, 5) %. النوعان الآخران من الاملاح لهما نتائج مشابهة لنتائج ملح كلوريد الصوديوم بمعدل انحراف (0,886- 0,129)% بدون z ومعدل انحراف (0,818-0,149) % عند أدخال قيم معامل الانضغاط  (z).
Bioremediation of Soil Contaminated with Diesel using Biopile system
Authors: Jabbar Noor Mohsen , Kadhim Estabriq Hasan , Mohammed Alaa Kareem
Published: April 2019

ركزت هذه الدراسة على معالجة التربة الملوثة بالمركبات النفطية (الديزل) و التي تسببت في مشاكلات بيئية خطيرة. ومن الطرق الواعدة و الأكثر فعالية لمعالجة التربة الملوثة بالنفط هي المعالجة البيولوجية بل هي الخيار الذي يوفر إمكانية تدمير الملوثات الضارة باستخدام النشاط البيولوجي. تم فحص قدرة الخليط البكتيري لمعالجة التربة الملوثة بالديزل في منظومة bio piling. ومن أجل معالجة سريعة خارج الموقع للتربة الملوثة بالديزل تم اختيار منظومة  .bio pilingوقد تم إنشاء منظومتين biopiles على نطاق تجريبي (25 كيلوغراماً من التربة لكل منهما) و يحتويان على التربة الملوثة بما يقرب من 2140 ملغم / كغم من الهيدروكربونات النفطية. التربة المعدلة: (التربة الملوثة مع إضافة المغذيات واللقاح البكتيري) حيث تخلط التربة مع 1.5٪ من نشارة الخشب، ثم زودت بالمغذيات اللازمة وتُسقى  يومياً لتوفير الظروف التي تعزز نمو الكائنات الحية الدقيقة. تم تحضير التربة غير المعدلة بوصفها عنصر سيطرة (التربة الملوثة بدون إضافة). جُهز كلا النظامين بالأوكسجين لتوفير الظروف الهوائية،و تم الحضن في  درجة حرارة الجو وسُحبت العينات اسبوعياً خلال مدة 35 يوما. تم إزالة 75٪ من إجمالي الهيدروكربونات البترولية من التربة المعدلة و 38٪ من تربة السيطرة في نهاية مدة الدراسة. خلصت الدراسة الى أن تجربة المعالجة البيولوجية خارج الموقع هي الإجراء المفضل،وهي اقتصادية وصديقة للبيئة، وبالتالي تمثل خيارا جيدا لمعالجة التربة الملوثة بالديزل.
O Nordeste e a questão agrária: discursos de um periódico católico para o campo cearense, 1961-63
Authors: Porphirio Max Fellipe Cezario
Published: April 2019

Nosso trabalho consiste em analisar a utilização do O Nordeste – jornal católico cearense – como instrumento de propagação das diretrizes da hierarquia católica para o campo brasileiro a partir de 1961. As mudanças pelas quais esse jornal passou entre 1961 e 1963, no que se refere ao trato da questão agrária, são elucidativas sobre o esforço despendido pela hierarquia católica na luta pela organização política do trabalhador rural. Adotando como referências teórico-metodológicas as ideias desenvolvidas por Jean-Noël Jeanneney, Norman Fairclough, Regina de Luca, Cruz e Peixoto, procuramos fazer uma análise bidimensional do discurso desse periódico, discutindo tanto sua estrutura textual – vocabulário e estratégias argumentativas – como a conjuntura político-econômica na qual se inseria. Para tanto, dividimos o artigo em três partes: apresentaremos as formas de atuação da Igreja Católica no campo brasileiro; discutiremos a maneira pela qual O Nordeste noticiou os problemas rurais entre 1961 e 1963; debateremos como os trabalhadores rurais foram caracterizados por esse periódico.
A palavra e a imagem: testemunhos da emblemática na Assistência Portuguesa da Companhia de Jesus. // The word and the image: testimonies of the emblematic one in the Portuguese Assistance of the Society of Jesus
Authors: Santos Luísa Ximenes
Published: April 2019

Analisaremos o uso da emblemática pelos jesuítas da Assistência portuguesa da Companhia de Jesus, herdeira do movimento humanista no que tange ao resgate da cultura clássica. Fundada num momento em que a Igreja Católica rediscutia o papel da imagem na difusão da fé, a Ordem jesuítica demonstrou grande preocupação não só com o discurso proferido e escrito, mas também com aquele expresso através de imagens. Diante da carência historiográfica, nos propomos a refletir sobre a difusão e produção de emblemas na Assistência portuguesa considerando a emblemática não de um ponto de vista literário ou como simples aparato decorativo, mas como um instrumento didático, uma forma de transmitir mensagens cristãs e um tipo de discurso moralizante e político. Para tanto, nos deteremos em testemunhos do uso da emblemática pelos jesuítas em impressos, cerimônias e edificações.We will analyze the use of the emblematic by the Jesuits of the Portuguese Assistance of the Society of Jesus, heiress of the humanist movement in what concerns the rescue of the classic culture. Founded at a time when the Catholic Church was rediscussing the role of the imagery in the diffusion of faith, the Jesuit Order showed great concern not only with the uttered and written discourse, but also with that expressed throughout images. Being aware of the historiographical scarcity, we propose to bethink the production and diffusion of emblems in the Portuguese Assistance in between 16th and 18th centuries, considering the emblematic not from a literary point of view or as a simple decorative apparatus, but as a didactic instrument, a way of transmitting Christian messages and a type of moralizing and political discourse. For this, we will detain ourselves on testimonies of the use of emblematic by the Jesuits in printeds, ceremonies and buildings.
Geração de dados GPS de pseudodistância para uma estação virtual: métodos, implementação e análise dos resultados
Authors: ALVES Daniele Barroca Marra , MONICO João Francisco Galera
Published: April 2019

O objetivo deste artigo é avaliar a qualidade das observáveis de pseudodistância geradas para uma estação de referência virtual (VRS - Virtual Reference Station). Para gerar os dados da VRS três métodos diferentes foram implementados e testados. No primeiro método, foram empregados os dados brutos das estações de referência da rede. O segundo foi baseado nas correções de duplas diferenças das estações de referência. No terceiro método, foram utilizados modelos atmosféricos (ionosfera e troposfera) para gerar os dados da VRS. As estações da rede do estado de São Paulo foram utilizadas para realizar os experimentos. A VRS foi gerada na posição de uma estação de referência (arquivo real), com coordenadas conhecidas. Para avaliação, os dados da VRS foram comparados com aqueles provindos do arquivo real. Os resultados obtidos foram similares, proporcionando acurácia decimétrica ou centimétrica, dependendo do método.
A drenagem pretérita do Rio Camaquã na costa do Rio Grande do Sul
Authors: WESCHENFELDER Jair , CORRÊA Iran C.S. , BAITELLI Ricardo , TOLDO Elírio E.
Published: April 2019

A análise de registros sísmicos de alta resolução (3,5 e 7,0 kHz), obtidos na Lagoa dos Patos, revelou a presença de diversos canais soterrados que dissecaram profundamente a zona costeira do Rio Grande do Sul (Sul do Brasil) antes do estabelecimento da superfície baixa e levemente ondulada daplanície costeira atual. Em direção ao continente, o sistema de paleodrenagem mapeado de registros sísmicos pode ser vinculado ao curso atual do Rio Camaquã. À jusante, ele pode ser conectado com sistemas de paleocanais da plataforma continental adjacente e talude continental, reconhecidos em trabalhos anteriores através de estudos sísmicos e morfoestruturais. À montante, a drenagem foi escavada no prisma costeiro depositado durante eventos prévios de nível de mar alto do Quaternário. O caminhoda paleodrenagem, reconhecida na planície costeira e plataforma continental adjacente, representa um sistema fluvial-plataformal ligando a bacia de drenagem continental aos depocentros da bacia marginal, atravessando a plataforma continental exposta durante um evento de regressão forçada.
Uso de imagens ERS SAR no monitoramento de zonas superficiais de neve e gelo da região nordeste da Península Antártica
Authors: ARIGONY NETO Jorge , MENDES JÚNIOR Cláudio Wilson , RIBEIRO Rafael Da Rocha , SIMÕES Jefferson Cardia
Published: April 2019

Imagens ERS SAR adquiridas no verão austral de 1993 e 1996-97 e primavera de 1996 e 2000 foram usadas para a análise das variações espaço-temporais de fácies ou zonassuperficiais de neve e gelo de geleiras (ZSNG, i.e., zonas de neve seca, percolação, neve úmida e gelo exposto) da região nordeste da Península Antártica (PA). A área de estudo compreende as ilhas James Ross, Vega, Eagle e Corry e a região norte da Península Trinity. Algoritmos baseadosem regras de decisão foram desenvolvidos para discriminar as ZSNG nas imagens ERS SAR. Dados da cobertura de rochas e da linha de costa do Antarctic Digital Database foram usados para mascarar as áreas de rochas e áreas oceânicas, respectivamente. Através do uso de ferramentas de análise espacial de um SIG, foram calculados valores máximos de altitude e áreas totais das ZSNG e geradas imagens de suas variações e freqüências. Além disso, a dinâmica das ZSNG foi comparada com dados de temperatura média diária do ar superficial medidas por estações meteorológicas. Mudanças significativas foram observadas em ZSNG na PA, de 1993 a 2000. A dinâmica das ZSNG mostrou boa correlação com as variações interanuais e sazonais da temperatura do ar superficial. As variações espaço-temporais foram interpretadas como respostas aos diferentes tipos de geleiras aos parâmetros climáticos, oceanográficos e topográficos. As maiores variações nas ZSNG foram observadas na região leste da Península Trinity, noroeste da ilha James Ross, leste da ilha Vega e oeste da ilha Eagle.
Reconhecimento e mapeamento de fácies sísmicas nos pontais arenosos da lagoa dos Patos, RS, Brasil
Authors: PEREIRA Carla Mandrácio , WESCHENFEL Jair , CORRÊA Iran Carlos Stalliviere
Published: April 2019

O objetivo deste trabalho é reconhecer e mapear os elementos sísmicos arquiteturais dos pontais arenosos que ocorrem na lagoa dos Patos, os quais se encontram localizados na planície costeira do Estado do Rio Grande do Sul, Brasil. O trabalho é baseado em dados de alta frequência (kHz 3,5) e resolução, oriundos de levantamentos sísmicos realizados na lagoa dos Patos, a bordo da lancha Larus, da Universidade Federal do Rio Grande. Cerca de 400 km de perfis sísmicos foram coletados em várias seções. Consideraram-se, para o estudo, os perfis sísmicos obtidos próximo aos pontais arenosos da margem lagunar. A análise dos registros sísmicos permitiu o reconhecimento e mapeamento de fácies sísmicas que construíram os pontais arenosos da lagoa dos Patos. A progradação dos pontais arenosos é bem marcada por refletores oblíquos tangenciais que mergulham em direção ao interior da laguna. O pacote formado por estes refletores progradantes recobre um pacote de refletores subparalelos ou, às vezes, uma discordância de erosão. Ao longo dos registros, fácies sísmicas compostos por refletores paralelos, regulares e mergulhantes ocorrem no topo da sequência. Estas estão relacionadas com a sedimentação lagunar
Mapeamento geomorfológico da bacia hidrográfica do Rio Itu, oeste do Rio Grande do Sul, Brasil
Authors: TRENTIN Romário , ROBAINA Luís Eduardo de Souza , SANTOS Leonardo José José Cordeiro
Published: April 2019

O mapeamento geomorfológico possibilita a representação das diferentes formas e feições do relevo e dos sistemas e unidades geomorfológicas de uma área. Neste sentido,estabeleceu-se uma proposta de classificação geomorfológica da Bacia Hidrográfica do Rio Itu, procurando usar as denominações já empregadas para a compartimentação no Rio Grande do Sul. O levantamento cartográfico utilizou cartas topográficas 1:50.000, imagens de satélite e trabalhos de campo. Foram determinados os atributos da rede de drenagem, as características do relevo, o substrato geológico, as classes de solos e as feições superficiais. A integração dos dados e a compilação dos mapas permitiram a definição dos diferentes níveis de compartimentação. O primeiro nível está representado pelos compartimentos dos depósitos sedimentares quaternários e pelas bacias e coberturas sedimentares. O segundo nível está representado portrês compartimentos: as planícies dos grandes rios, o planalto das Araucárias e o planalto da Campanha Gaúcha. O terceiro nível está representado por sete compartimentos: áreas planasaluviais, os topos planos do Planalto, o relevo de escarpas íngremes, as colinas de rocha vulcânica, os morrotes de rocha vulcânica, as colinas de arenito e os morrotes de arenito. A análise, através do estudo geomorfológico, apresenta elementos fundamentais ao gerenciamento do meio e, portanto, é uma ferramenta indispensável ao planejamento ambiental.
Posicionamento por GPS na Região Brasileira Durante a Intensa Tempestade Geomagnética de 29 de Outubro de 2003
Authors: MATSUOKA MARCELO TOMIO , CAMARGO PAULO DE OLIVEIRA , STACIA INEZ
Published: April 2019

The error due to the ionosphere in the GPS observables depends on the Total Electron Content (TEC) in the ionospheric layer. The TEC varies regularly in time and space in relation to the sunspot number, the season, the local time, the geographic position, and others. However, the TEC can suffer abrupt modifications in its behavior due to the occurrence of intense magnetic storm. On 28 October 2003, at 1110 UT, a major solar flare took place from a sunspot directly in line with the Earth. A coronal mass ejection was observed to leave the Sun in the direction of the Earth, causing an intense magnetic storm that started at 0611 UT of the following day. In this paper, GPS data from RBMC and IGS network and Digisonde data were used, to analyze the influence of the intense magnetic storm that occurred on October 29, 2003 in the behavior of TEC and in the performance of the point positioning in the Brazilian region
Correlações Estratigráficas Conflitantes no Limite Permo-Triássico no Sul da Bacia do Paraná: O Contato Entre Duas Seqüências e Implicações na Configuração Espacial do Aqüífero Guarani
Authors: SOARES ANA PAULA , SOARES PAULO CÉSAR , HOLZ MICHAEL
Published: April 2019

The stratigraphic register of the Guarani aquifer system in the Parana basin involves deposits of the Triassic to the Cretaceous. The register in the south region differs from the other areas of the basin, causing confusion in the stratigraphic conception of the Pirambóia Formation. This formation is correlated with paleozoics deposits whose register is only found in the south region of the basin. The correlation that intends for these units has implications in the space configuration and distribution of the aquifer. The space relationships of this record are reinterpreted. The Rio do Rasto Formation, of late Permian age record alluvial plain system, in a progressive semiarid environment, including dune fields; in the southern part of the basin these dune field are extensive and is represented by thick record, covered again by extensive fluvial deposits of the Sanga do Cabral Fm at the PT boundary. The unconformity above records a generalized uplift, associated to the Gondwanides orogeny and to climatic changes, accompanied by progressive supply and sin-sedimentary deformation. Above the unconformity, aeolian and fluvial deposits of the Mesozoic sequence present division organized in 3 blocks: West, Central and East. Three depositional cycles were identified. The first, unconformable over Permian rocks, occurs only in the Central Block, with fluvial and lacustrine deposits filling small rifts (Santa Maria and Caturrita fms). The second cycle extends over the whole basin with fluvial deposits and humid aeolian (formations Guará and Pirambóia); the fluvial and aeolian Guará Fm lies unconformable over Sanga do Cabral Fm in the West Block. In the East Block the aeolian and fluvial unit identified as Pirambóia Fm correlative; it occurs unconformable over the Rio do Rasto Fm, omitting the Sanga do Cabral Fm and the rocks of the first cycle. The third cycle system tract records super arid dune fields of the Botucatu Formation. The Late Permian aeolian facies of the Sanga do Cabral Fm, previously called by some authors as the Pirambóia Fm, doesn't present interfingers and doesn't constitute a hydrostratigraphic unit connected to the Guarani System.
Potencial de Danos Econômicos Face à Erosão Costeira, Relativo às Praias da Costa do Descobrimento – Litoral Sul do Estado da Bahia
Authors: SILVA IRACEMA REIMÃO , PINTO BITENCOURT ABÍLIO CARLOS DA SILVA , DOMINGUEZ JOSÉ MARIA LANDIM , DE MELLO E SILVA SYLVIO BANDEIRA
Published: April 2019

An evaluation of the potential economic damage to the Discovery Coast beaches, in southern Bahia, due to their susceptibility to erosion and urbanization level, indicates that 60% beaches have a low level of damage, 30% have a medium level and 10% are already highly damaged. These beaches with the highest level of damage are the ones heavily urbanized and exposed to erosion, or are located close to river’s mouth. The data obtained from this work will certainly be of a great value for the effectiveness of planning and managing the Discovery Coast beaches such as, for example, showing to the decision-makers the need for investing into the tourism development, coupled with questions related to the land use.
Caracterização Petrográfica e Geoquímica da Parte Leste do Granito Europa, Distrito Mineiro de Pitinga, AM
Authors: PRADO MAURÍCIO , MIRRAS FERRON JOSÉ TADEU MAXIMINO , DE LIMA EVANDRO FERNANDES , BASTOS NETO ARTUR CEZAR , PEREIRA VITOR PAULO , RIGON MINUZZI ORLANDO RENATO , PIEROSAN RONALDO
Published: April 2019

The important mineral deposits of the Pitinga Mine, in the Amazonian region are related to A-type granites intruded in the Iricoumé Group. The Europa granite is one of these A-type rocks, intruded in the Iricoumé Group, which is represented by subaerial vulcanoclastic rocks (crystal-rich ignimbrites, thin massive tuffs and siltic tufaceous arenites) and minor hipabissal rhyolites. The volcanic rocks were probably generated in a caldera environment. The Europa granite is an alkali-feldspar peralkaline granite (hipersolvus) without genetic relationship with to the volcanic rocks of the Iricoumé Group, but it could have been generated during the resurgence stages. The petrographic and geochemical data attest that fractional crystallization process was the principal mechanism during the crystallization, which led to the generation of two different granitic facies. The Nb soil anomalies overprinted on the more differentiated facies are related to the astrophillite weathering.
Utilização de Geotecnologias: Diagnóstico Ambiental do Estuário do Rio Acaraú, Ceará, Como Estudo de Caso
Authors: ARAÚJO MARIA VALDIRENE , SÁ FREIRE GEORGE SATANDER
Published: April 2019

The Acaraú basin is located to the west of Fortaleza, capital from Ceará state and, it covers an area of 14.500Km² being considered the second largest basin in this state. The study area, which covers 80Km², is in the estuary of the Acaraú river, embracing the munipality of Acaraú and Cruz in the west. The research intended to analyze the geo-environmental conditions, to analyze the use process and occupation and the environmental impacts, as well as to characterize the resident population in the area and to conserve the natural resources in order to guarantee their use by the next generations. The used methodology included pertinent bibliography, pictures and satellite images with good resolution as the images of Quickbird. The geoprocessing activities involved images digital processing of remote sensing and the integration of data in structure of SIG (System of Geographical Information). The obtained results consisted in the integrated environmental analysis generating a proposal of environmental zoning.
Petrografia, Geoquímica, Análises Isotópicas (Sr, Nd) e Geocronologia Ar-Ar dos Basaltos de Tapirapuã (Tangará da Serra, Mato Grosso, Brasil)
Authors: BARROS MÁRCIA APARECIDA DE SANT’ANA , MIZUSAKI ANA MARIA , WESKA RICARDO , DE BORBA ANDRÉ , CHEMALE JR FARID , DA COSTA ELISON CARMO
Published: April 2019

The basaltic flows from Tapirapuã Formation are exposed at Tangará da Serra region, 250 km from Cuiabá (MT) and the thickness can reach 310 meters. The basalts range from massive dark gray, with colunar disjunctions at the base to purple amygdaloidal at the top. They are generally fine-grained, however gabroics portions have been identified. In thin section the Tapirapuã basalts show subophitic texture. Chemical analyses in these rocks suggest tholeiitic compositions, within continental tectonic environment. There is an enrichment of light rare earth elements when compared to heavy rare earth elements. The studied samples have low contents of TiO2 and P2O5 being similar to low P2O5 and TiO2 group from Serra Geral Formation (Paraná Basin). Analyses of Sr and Nd isotopes show the following results: 87Sr/86Sr between 0.703 and 0.707, ∈Nd from –0.01 to + 2.32 and model ages (TDM)= (931 to 1.267 Ma). 40Ar / 39Ar geochronology of plagioclase crystals from Tapirapuã basalts presented a plateau age of 206 ± 6 Ma, in agreement with previous ages obtained from Anari and Tapirapuã sub-provinces. This result places the volcanic event at the limit of the Triassic-Jurassic periods, related to the opening of the North Atlantic.
Extração de Obstruções Perspectivas de Edifícios ao Longo de Vias Urbanas
Authors: FAZAN ANTONIO JULIANO , DAL POZ ALUIR PORFÍRIO , GALVANIN EDINÉIA APARECIDA DOS SANTOS
Published: April 2019

This paper presents an approach for extraction of perspective obstructions in high-resolution aerial images caused by the perspective projection of buildings onto adjacent urban ways. The proposed methodology consists in firstly extracting the contours of building roofs and urban ways from an intensity image generated by a conversion of a Digital Elevation Model (DEM). In the following, the polygons representing the roof contours are projected through the perspective bundle onto the respective mean planes of adjacent ways. Intersections between polygons representing roof contours and local segments of adjacent ways allow the extraction of the perspective obstructions in the object-space. The perspective obstruction polygons are finally projected onto the digital image basically using the collinearity equations. The results obtained by methodology allow the verification of its performance and show its potential for extraction of perspective obstructions in high-resolution aerial images.
Macrozoneamento do Estado do Rio Grande do Sul
Authors: GUASSELLI LAURINDO ANTONIO , SALDANHA DEJANIRA LUDERITZ , SUERTEGARAY DIRCE MARIA ANTUNES , DUCATI JORGE RICARDO , FONTANA DENISE CYBIS
Published: April 2019

Earth imaging technologies using orbital platforms have allowed new approaches in the analyses, compartmentalization, and territorial visualization. These cartographic informations have many applications in agricultural, urban and environmental monitoring. In the case of vast geographic regions, such as Brazil, one expects that the many products obtained from imaging technology will be used to reduce costs and to provide a better understanding of the territory. The crossanalysis of the products from various imaging systems of different characteristics (e.g. pixel size, band, and data) allows the improvement of current maps as well as more complex analyses. The macrozoning of the state Rio Grande do Sul was accomplished by integrating orbital data of different characteristics and other cartographic products. The following sources supplied data on Rio Grande do Sul: 1) Landsat TM mosaic; 2) temporal NDVI/NOAA combination; 3) geomorphologic map; and 4) altimetric map. The cross-analysis of the data allow us to gather in a single map information from distinct cartographic sources, which better represent the diversity of the thematic classes in relation to the usage patterns of soil and plant life in the state of Rio Grande do Sul.
Análise e Avaliação dos Problemas Existentes no Revestimento da Cúpula da Catedral Metropolitana de Porto Alegre, RS
Authors: DI BENEDETTI VERÔNICA , PHILIPP RUY PAULO
Published: April 2019

The Metropolitan Cathedral of Porto Alegre, in Rio Grande do Sul state, was designed by roman architect João Batista Giovenalle. This construction was developed in a long time between 1921 and 1986. The external building design has a match of granite and marble. In the body of the church was used rose granite extracted from a quarry located in Porto Alegre. Its imposing dome has covering of siliceous dolomitic marble drew out from quarry of Espírito Santo state. Originally the author of the project planned to recover this architectural element with copper, but this material was replaced by marble due to financial difficulties. However it wasn’t planned the necessary suitableness structures to perfect operation of this new material and resulted in a series of pathologies that damaged its aesthetic satisfactory design and the own building.
Diferenças Entre os Depósitos Auríferos do Grupo Aguapei (Estado de Mato Grosso) e os Clássicos Exemplos de Ouro em Conglomerados
Authors: FERNANDES CARLOS JOSÉ , PULZ GÊNOVA MARIA , KUYUMJIAN RAUL MINAS , PINHO FRANCISCO EGÍDIO CAVALCANTE
Published: April 2019

Gold prospects in the Aguapeí Folded Belt are situated in the southwestern portion of the Amazon Craton, within the Alto Guaporé Province, southwestern state of Mato Grosso. The mineralizations are mainly concentrated in the Pau-a-Pique Deposit (south), Lavrinha Region (central), and São Vicente Mine (north). Gold ore comprises quartz veins and disseminations in the low-grade metamorphic metassedimentary rocks from the Aguapeí Group. This stratigraphic unit was strongly deformed by the Sunsás-Aguapeí Orogeny (1.28-0.95 Ga). The Aguapeí gold deposits differ in their petrography, chemistry, structural aspects and age from world classic gold deposits associated with coarse clastic sedimentary sequences (Witwatersrand, Jacobina, Tarkwa, etc.). This study discusses the main differences between Aguapeí gold deposits and the classic worldwide deposits hosted by conglomerates.
Avaliação de Desempenho no Georreferenciamento de Imagens do Sensor HR CCD (High Resolution Charge-Coupled Device) do Satélite CBERS-1
Authors: ZANARDI RAFAEL PEREIRA , ROLIM SILVIA BEATRIZ ALVES , BIELENKI JÚNIOR CLÁUDIO , DE ALMEIDA CARLOS ALUISIO MESQUITA
Published: April 2019

In this work it was analyzed the validation of CBERS-1 (China and Brazillian Earth Resourses Satellite) data related to qualitative and quantitative parameters that define the precision of its georeferencing. A topographical survey was carried out for the acquisition of ground control points spatially well distributed in the study area, employing differential GPS, aiming at the georeferencing of the image. Tests with different numbers of sampling points and several methods of Geometric Transformation and Resampling were made during the georeferencing. These results were statistically analyzed to determine the best method to georeference CBERS-1 images. It was verified that the first-degree polinomial transformation with nearest neighborhood resampling presented the best result, showing a precision of 18,52m.
Paleoalterações e Carbonatos em Depósitos Aluviais na Região de Santa Maria, Triássico Médio a Superior do Sul do Brasil
Authors: DA ROSA ÁTILA AUGUSTO STOCK , PIMENTEL NUNO LAMAS VALENTE , FACCINI UBIRATAN FERRUCIO
Published: April 2019

Five types of paleo-weathering and carbonate precipitation were recognized in fine-grained deposits of the Alemoa Member, Santa Maria Formation, Middle to Upper Triassic of southern Brazil. The fauna and flora found in these lithologies are important dating tools, but only in a generic way, misleading the time involved in periods of deposition and non deposition. The identified types of deposits are (i) reddish mudstones, with none or little paleo-weathering, (ii) mottled mudstones, with incipient pedogenesis, mainly mottling, destratification, animal and vegetal colonization, (iii) carbonate veins, with more evidences of exposure and root action, (iv) carbonate siltstones/sandstones, where restricted fluvial deposits are cemented by phreatic carbonate, and (v) carbonate nodules and lenses, in which small lenses of a very compact calcrete are at the top and in the center of carbonated siltstone/sandstone beds, distinguished by its crystalinity, hardness and brighter color. The recorded microfacies point to a cyclic variation of the mainly high phreatic level, forming cracks and pedotubules (pedogenesis) filled with carbonate and Fe and Mn oxides (phreatic). The identification of five distinct pedofacies and the stratigraphic correlation in the sedimentary package of the Alemoa Member (base, middle or topmost position) suggest a probable association of paleo-weathering processes and vertebrate preservation. Near channel facies, mainly at the base and top, present smaller exposure periods and higher variations on the phreatic level, and consequently, the best preserved vertebrate fossils. On the other hand, facies which are far from the channel, record more subaerial exposure and more significant phreatic variation, leading to more advanced (although still incipient) paleo-weathering and carbonate precipitation, and to a worst fossil preservation.
Metodologia para Avaliação de Rodovias Extraídas Computacionalmente em Imagens Digitais
Authors: MAIA JOSÉ LEONARDO , DAL POZ ALUIR PORFÍRIO
Published: April 2019

The evaluation of cartographic features (semi-) automatically extracted from digital images is of great importance in the context of the validation of computational algorithms for feature extraction. The general procedure to evaluate the geometrical quality of cartographic features is based on the comparison between the entities extracted via computational algorithms and the corresponding ones extracted manually, the latter being referred to as reference features. Such comparison between the two groups of features is performed in three steps, i.e.: (1) calculation of corresponding points between the extracted features and the reference features; (2) estimation of quality parameters (completeness, correctness, quality, mean error (RM) and root mean squared (RMSE)) based on the corresponding points; and (3) analysis involving the quality parameters obtained in step 2. The evaluation methodology was tested in many situations, involving different image data as well as extraction methodologies with different characteristics. The results show that the methodology enables a very detailed evaluation of the results regarding the extraction methods.
Padrões Diagenéticos em Arenitos de Sistemas de Sabkha Costeiros-Eólicos: Um Estudo Comparativo dos Reservatórios Juruá da Área de Urucu, Bacia do Solimões, AM
Authors: ELIAS ANDRÉIA REGINA DIAS , DE ROS LUIZ FERNANDO , MIZUSAKI ANA MARIA PIMENTEL
Published: April 2019

Coastal-eolian sabkha sandstones from different ages and basins show similar diagenetic patterns, which understanding is important for their evaluation as geochemical systems and as hydrocarbon reservoirs. The Carboniferous sandstones of the Juruá Formation (Solimões Basin) are one of the most important gas reservoirs of Brazil. The sandstones and interbedded mudrocks, evaporites and dolostones were deposited within a coastal sabkha environment with pervasive eolian reworking, under increasing marine influence, and hot and dry climate. Four stacked drying/wetting upward cycles were identified, with sabkha facies in the base overlain by eolian deposits, followed again by sabkha deposits, commonly eroded by the next cycle. Eolian dune and sandsheet sandstones are the best reservoirs. The diagenetic evolution and the relationships among diagenesis, depositional facies and stratigraphic unit boundaries show similarities with other coastal-eolian sabkha sandstones. The eodiagenesis is characterized by mechanical compaction, hematite and infiltrated clay coatings, framboidal pyrite, microcrystalline and blocky dolomite. Mesodiagenesis comprises chemical compaction, K-feldspar and quartz overgrowths, poikilotopic anhydrite, feldspar dissolution and albitization, illite and chlorite authigenesis, and late quartz, Fedolomite/ ankerite, calcite and siderite. Localized telogenetic effects include oxidation of ferroan constituents and kaolinite precipitation. Blocky dolomite and quartz cementation, and chemical compaction through intergranular and stylolitic pressure dissolution are more abundant in the non-eolian sandstones. Microcrystalline pore-filling and pore-lining dolomite, and patchy, poikilotopic, post-compactional anhydrite cementation, mostly close to the contacts with interbedded evaporites, are more abundant in the eolian sandstones. These diagenetic patterns are similar to those of the Rotliegend Group in northern Germany and in the North Sea, of the Norphlet and Tensleep Formations in USA, of the Muschelkalk Formation in Spain, and of the Monte Alegre Formation from the Amazonas Basin, northern Brazil. The similarities among the diagenetic histories of these coastal-eolian sabkha sandstones are ascribed to their similar patterns of stratigraphic organization (intercalated evaporite and carbonate beds) and of composition and circulation of pore fluids.
Recognition of Environmentally Vulnerable Depositional Facies in the Chacahua Lagoon, Oaxaca, Mexico
Authors: RÍOS Felipe , SANDOVAL Gelia , FRÍAS Alfredo
Published: April 2019

Over the years, human activity and environmental problems have impacted the Chacahua Lagoon in the State of Oaxaca, Mexico. In an attempt to gain more insight into the current environmental conditions of this lagoon, twenty-eight bottom sediment samples were collected in August 2003. Using depth, physical properties (grain-size and texture) and biological characteristics (organic matter and CaCO3 contents) of sediments as environmental indicators, three depositional facies were identified implementing cluster analysis, each facies seems to be under the influence of different processes. In terms of environmental concern, it was determined that the central part of the lagoon presents a high potential of pollutant sorption, thus this sector should be closely monitored.
Geoquímica de Rochas Metabasálticas da Mina da Palma, Bloco São Gabriel, Escudo Sul-rio-grandense: Um Possível Platô Oceânico
Authors: LOPES ANGELA PACHECO , HARTMANN LÉO AFRANEO
Published: April 2019

The Mina da Palma oceanic plateau is described for the first time in the São Gabriel Block, southern Brazilian Shield. It is composed mostly of metabasalts, marbles and metachert. Two deformational events are recognized in the Palma region, thrust faulting followed by dextral subvertical shearing. The rocks were metamorphosed in the greenschist facies, as shown by the dominant mineral assemblage albite-actinolite-chlorite-epidote-opaques. Metamorphic alteration was intense, because only a few relicts of the original magmatic textures are preserved, such as flow structure of amphibole and plagioclase. In spite of intense alteration during metamorphism, geochemical studies show that the chemical composition of many basalts is still preserved. The metabasalts are transitional tholeiite/alkaline and reflect intraplate conditions of formation. The tectonic environment was identified by field relations, such as predominance of basalts and small volume of marble and chert and minor clastic sedimentary rocks. The tectonic environment of formation is reflected in the geochemistry, particularly in multi-element spidergrams, because no significant Nb anomaly is observed in the least altered samples.Previous investigations showed the presence of an island-arc basaltic-andesitic association in the Palma region, which indicated that the geological unit contains one oceanic association and one active plate margin association. This is possibly the first description of remnants of an oceanic plateau in the Brazilian Shield.
Ocorrência e Variabilidade de Composição dos Fosfatos do Grupo da Monazita em Carbonatitos
Authors: DE TOLEDO MARIA CRISTINA MOTTA , PEREIRA VITOR PAULO
Published: April 2019

Monazite structural group includes arsenates, phosphates, and silicates, with general formulae A B O4 , (A = Bi, Ca, Rare Earth Elements, Th, U and B = As5+, P5+, Si4+). Among them, the phosphate monazite is the most abundant independent Rare Earth Element mineral, occurring in several geological sites. It presents a variable composition and morphology and has strong chemical and physical stability. This paper presents a review about this mineral, particularly for monazite associated with carbonatite complexes. Detailed study of the composition of monazite will improve geochemical and petrological interpretations. In the economic field, monazite is, with bastnaesite, an ore mineral present in the main deposits in the world; its morphological and composition characteristics have influence in ore quality and in efficiency of concentration processes. Since the seventhies, its importance reachs the environmental field and his highly stable structure has been investigated as model for a synthetic phase to long-term storage of radionuclides from nuclear waste. The most important monazite ore deposits in Brazil are alluvional. Monazite occurs also in other materials, mainly in carbonatites and their weathering products, which may constitute important source of REE. In these rocks, because its high stability and possibility of weathering genesis, monazite is the most important among the phosphate minerals. However, researches about monazite associated with Brazilian carbonatitic materials have shown mainly unfavourable morphological characteristics for economic profit.
Razões Isotópicas 87Rb/86Sr, 87Sr/86Sr e 143Nd/144Nd como Traçadores de Proveniência de Rochas Sedimentares Siliciclásticas: Exemplos no Grupo Camaquã (Paleozóico inferior, RS, Brasil)
Authors: DE BORBA ANDRÉ WEISSHEIMER , MIZUSAKI ANA MARIA PIMENTEL , DA SILVA DIOGO RODRIGUES ANDRADE , KAWASHITA KOJI
Published: April 2019

The Rb-Sr and Sm-Nd isotopic systems are ideal in constraining the provenance of fine-grained clastic rocks. This is particularly true for continental, fluvio-lacustrine, sedimentary units deposited under semi-arid climate conditions, where mechanical desintegration of source rocks dominates the weathering processes. Three sets of red-colored, continental siltstones of the Camaquã Group (Early Paleozoic, southern Brazil) were analyzed for these isotopic systems, providing important data for the understanding of the provenance pattern of the Santa Bárbara (lower) and Guaritas (upper) formations. The results of six samples from the finer-grained portion of Sequence I of Santa Bárbara Formation (SEI samples) suggest provenance predominantly from the adjacent volcanic units (Hilário and Acampamento Velho formations), with subordinated contribution of monzonites (Arroio do Jaques) and metamorphic rocks (Cambaizinho), reflecting eastward paleoflow. Three samples from the outcrop area of the Santa Bárbara Formation east of Caçapava do Sul (SBG samples) reveal a similar provenance pattern, with a more effective contribution of felsic ignimbrites of the Acampamento Velho Formation as source rock. On the other hand, eight samples from the Guaritas Formation, obtained near Santana da Boa Vista (GUA samples), show anomalously high 87Rb/86Sr and 87Sr/86Sr ratios, suggesting more potassic source rocks. The values find correspondence mainly in the syn-transcurrent metagranites Quitéria, Arroio Francisquinho and Cordilheira (older than 600Ma), felsic lavas of the Acampamento Velho Formation (poorly exposed in the area), orogenic (Pinheiro Machado) and post-orogenic (Encruzilhada do Sul) intrusive suites. Other presently exposed units, such as the Encantadas Gneiss (older and more mafic) and the Porongos metasedimentary rocks (also older Nd signature) would have been buried or unavailable for erosion during the deposition of the Guaritas samples.
Asociaciones de Diatomeas en Paleoambientes Cuaternarios de la Costa Sur de la Provincia de Buenos Aires, Argentina
Authors: GUTIÉRREZ BEATRIZ TÉLLEZ , SCHILLIZZI ROBERTO
Published: April 2019

Sedimentary platforms of the south coast of Buenos Aires province (Argentine) were analised. A palaeoenvironmental evolution is established based on geological surveys, diatoms and sediment analyses. The information may be summarized in three stages: 1) during Pleistocene, ca.16.000 and 12.000 years B.P., lacustrine deposits, with eolic influence were identified; 2) between 8.000 and 6.500 years B.P. movile dunes morphology is associated with moments of climatic changes and increase in water supply to the area, favouring the establishment of shallow bodies colonized by fresh to brackish water assemblages of diatoms with litoral and acuatic macroflora development. There is a continentalization of the lagoons to the end of this stage; 3) ca. 5.300 and 4.800 years B.P., the oriental edge of the platform records marine conditions.
Análisis tafonómico de moluscos holocenos en el área costera del Estuario de Bahía Blanca, Argentina
Authors: SPAGNUOLO JORGE , FARINATI ESTER , ALIOTTA SALVADOR
Published: April 2019

At the south west of the Buenos Aires province, Argentina, on the northern coast of the Bahía Blanca Estuary, sand-shell ridges sub-parallel to the coastline generated during the Holocene transgression-regression were deposited. These structures are composed mostly of coarse to medium sand and a high proportion of molluscs shells (19 species of bivalves and 16 species of gastropods). For this study three taxa from the fossil association located in the ridges (Brachidontes rodriguezi, Tegula patagonica and Crepidula aculeata) were selected and the mechanisms of taphonomic alteration that affected them were qualified. By means of ternary taphograms the variation of five taphonomic attributes (bioerosion, encrustation. fragmentation. wear and dissolution) was established. It has been determined that the bioestratinomic processes are subordinated to the fossildiagenetic mechanisms, where dissolution has left a series of taphonomic signatures. Based upon the taphonomic attributes of the fossil association a high stand sea level cycle with an important contribution of storm waves that affected the biogenic production area were established as a representation of the paleoenvironmental evolution.