bluuebunny/crossref_metadata_2025_split huggingface dataset:
Airborne Gravity Gradiometry for Rapid Mapping of Hydrocarbon Exploration Plays
Authors: Christensen Asbjorn N , Moore David , Dransfield Mark Helm 
Published: May 2016

Introduction
Over the past decade the Airborne Gravity Gradiometer (AGG) has been applied to a range of hydrocarbon exploration plays in settings from Australia to the Americas. Case study examples will illustrate that fixed-wing and helicopter borne AGG, when combined with high-resolution magnetics and available 2D seismic profiles, provide the means to rapidly, efficiently and safely explore for a variety of hydrocarbon exploration plays, including basement structural traps, salt structures and carbonate reefs.

The AGG technology
The Airborne Gravity Gradiometer (AGG) was designed and built explicitly for airborne use by the FALCON project (van Leeuwen, 2000) and called the FALCON AGG. Since 2005, this technology has used fully digital electronics. The digital AGG is smaller and lighter than other gravity gradiometers, permitting its installation in smaller aircraft, particularly helicopters.

Improved airborne gravity data quality
AGG provides twenty times better spatial resolution [150m versus 3,000m], and five times less noise [0.15 mGal versus 1.0 mGal] than conventional Airborne Gravity (Dransfield and Christensen, 2013). With the advent of a helicopter borne system AGG surveys can now be conducted as draped surveys in rugged terrain and at lower flight speed than by fixed wing aircraft, translating into additional improvement in the lateral resolution of the AGG data [45m].

Rapid AGG data acquisition
The AGG system has been designed specifically for use in light aircraft and demonstrates minimum sensitivity to air turbulence. The system can operate in turbulent conditions and routinely acquires in excess of 4,000 line-km per week. This translates into very rapid data acquisition, when contrasted to ground-based gravity acquisition. Fernandez et al. (2010) published an AGG case study from Argentina, Figure 1. A ground gravity survey of similar resolution (300m by 150m gravity station spacing) would require ~70,000 ground gravity station, or nearly two years of ground crew field work. In contrast the AGG survey was completed in two months with no safety incidents.
Rock characteristics of oil-, condensate- and dry gas-producing wells of the unconventional Devonian Duvernay Formation, Canada
Authors: J. Wust Raphael A. , Cui Albert , Nassichuk Brent R. , Bustin R. Marc 
Published: May 2016

Abstract
The Devonian strata of the Western Canada Sedimentary Basin has a wealth of potential hydrocarbon source rocks including the unconventional Upper Devonian Duvernay Formation of the Woodbend Group, a prolific oil-producing formation that has fed into the overlying strata. The Duvernay Formation has seen investments of over $7 billion since 2010 for land rights, corporate acquisitions/divestures and drilling activity. The Kaybob area is currently the center of exploration and production in the play with over 100 wells drilled or licensed. Notable operators include Athabasca, Encana, Talisman, Shell, Chevron, Conoco Phillips, Husky and Celtic/Exxon. One of the pioneering wells at Kaybob South (Celtic et al. HZ 15-33-60-20W5) tested 2.1 mmcf/d of gas with 75 bbls/mmcf of 56° API condensate at a reservoir pressure of 63 MPA (~19 KPa/m pressure gradient). Exploration companies are touting GIP reserves ranging wildly from 45 to &gt;200 bcf/section. Despite the positive initial production numbers, the Kaybob area has a complex geological and stratigraphic framework that needs to be understood. Thermal maturity of the organic matter in the Duvernay Formation ranges from immature in the eastern portion of the basin to dry-gas window in the west. Hence, location of each well is key to optimizing the production potential. Here we present new rock property data of wells along a transect from the oil-prone to the dry gas-prone area in the Kaybob area and compare the properties with the existing hydrocarbon production information. Rock composition, fabric, organic matter content and maturity as well as amount, distribution and size of pores and pore networks are evaluated. The data is displayed in a stratigraphic context and current production zones are highlighted. The discussion also integrates the thermal history and possible tectonic overprints of the area to evaluate the potential of developing production through the various thermal maturity zones and the possible hydrocarbon storage/flow of these rocks.
Morphological alterations in the heart and aorta of rats treated with glucocorticoids
Authors: Dantas R. , Souza K. , Santos D. , Feitosa V. , Fioretto E. , Aires M. , Marçal A. 
Published: May 2016

Abstract
Introduction: The objective of this study was to analyze the morphological structure of the heart and aorta of rats treated with the synthetic glucocorticoid dexamethasone. Material and Methods: Male Wistar rats were divided into two groups: 08 control rats undergoing treatment with a 0.9% saline solution for 10 days and 08 rats treated for 10 days with dexamethasone (2mg/kg animal weight). Results: Histological analysis detected a mild cardiac hypertrophy and 15% reduction of collagen located in the aorta of animals treated with glucocorticoid when compared to the control group. Conclusion: We conclude that treatment with dexamethasone for a period of 10 consecutive days is able to promote morphological changes in the structure of the heart chamber and, impair morphological structure of aorta.
El uso del color. Variaciones en los tejidos de Anni Albers
Authors: Toral Ana 
Published: May 2016

<p>El concepto de ‘variación’ descrito por Josef Albers para el desarrollo de su metodología docente, y ampliado en su obra de referencia Interacción del color, se muestra ligado al proceso de construcción compositivo de la retícula textil de Anni Albers. Trabaja en un soporte rígido donde resulta físicamente imposible mezclar colores. Es por esta razón que la investigación en cuanto al color en el tejido que realiza Anni Albers utiliza recursos altamente estimulantes.</p>
Respuesta de crecimiento y floración de Tagetes erecta “San Diego” mediante la agregación de fertilización carbónica atmosférica bajo condiciones controladas Estación Experimental “El Limón”
Authors: Urrutia Josué 
Published: May 2016

El establecimiento plantaciones ornamentales, cultivos agrícolas y plantaciones forestales pueden estar afectados por los cambios en el clima que conlleva a un estrés de los organismos y bajar los índices de producción. Este trabajo evalúa los beneficios del gas conocido como dióxido de carbono en su uso como fertilizante atmosférico y conocer sus efectos sobre el cultivo de la planta San Diego (Tagentes erecta). Para el establecimiento del ensayo se utilizaron las instalaciones de la Estación Experimental “El Limón” propiedad de la FAREM-Estelí/UNAN-Managua. Al evaluar los efectos de la fertilidad del CO2, se realizó dentro de microtuneles donde se hicieron las restricciones de este gas, se midió: el crecimiento de la planta en altura y diámetro basal, materia seca, índice de robustez y calidad. Se tomó como referencia la Evaluación del Indice de calidad de Dickson (1960). Los resultados demostraron que no existe diferencia sobre la altura y diámetro basal de las plantas, las dosis que sobre pasan los 400ppm de CO2 aumentan la materia seca de este cultivo ornamental, y esta se incrementa entre un 6 y 7%. Los índices de esbeltez y calidad indican que las plantas sometidas a 400ppm de CO2 son las que podrían sobrevivir mejor en condiciones de climas adversos al ser establecidas en campo.
High Quality - Low Computational Cost Technique for Automated Principal Object Segmentation Applied in Solar and Medical Imaging
Authors: Hayajneh Sofyan M. A. , Rashad AbdulRahman , Saraereh Omar A. , Al hazaimeh Obaida 
Published: May 2016

The objective of this paper is to introduce a fully computerized, simple and low-computational cost technique that can be used in the preprocessing stages of digital images. This technique is specially designed to detect the principal (largest) closed shape object that embody the useful information in certain image types and neglect and avoid other noisy objects and artifacts. The detection process starts by calculating certain statistics of the image to estimate the amount of bit-plane slicing required to exclude the non-informative and noisy background. A simple closing morphological operation is then applied and followed by circular filter applied only on the outer coarse edge to finalize the detection process. The proposed technique takes its importance from the huge explosion of images that need accurate processing in real time speedy manner. The proposed technique is implemented using MATLAB and tested on many solar and medical images; it was shown by the quantitative evaluation that the proposed technique can handle real-life (e.g. solar, medical fundus) images and shows very good potential even under noisy and artifacts conditions. Compared to the publicly available datasets, 97% and 99% of similarity detection is achieved in medical and solar images, respectively. Although it is well-know, the morphological bit-plane slicing technique is hoped to be used in the preprocessing stages of different applications to ease the subsequent image processing stages especially in real time applications where the proposed technique showed dramatic (~100 times) saving in processing time.
Análise do conforto térmico humano no outono-inverno em Santa Maria-RS: uma abordagem em escala local e regional / Analysis of human thermal comfort in the fall-winter in Santa Maria - RS: local to regional level approach
Authors: Gobo João Paulo Assis , Galvani Emerson 
Published: May 2016

<p>A presente pesquisa avaliou as condições de conforto térmico humano em ambientes externos na cidade de Santa Maria, Rio Grande do Sul, com base na dinâmica atmosférica regional para anos-padrão classificados como mais chuvoso, menos chuvoso e habitual, em meses representativos de outono e inverno. Para tal, utilizou-se da base de dados climáticos do Instituto Nacional de Meteorologia (INMET), sob a qual procedeu-se a construção do banco de dados, no qual foi atribuído o índice de Temperatura Efetiva com Vento (TEv). Verificou-se que os sistemas atmosféricos atuantes exercem expressiva influência sobre as situações de conforto térmico humano em Santa Maria nos meses representativos de outono e inverno, sobrepondo-se aos efeitos dos atributos geográficos tais como a altitude, a continentalidade e a marítmidade.</p><p><strong>Palavras–chave:</strong> conforto térmico humano, dinâmica atmosférica, anos-padrão.</p><p><strong> </strong></p><p><strong> </strong></p><p><strong>Abstract </strong></p><p>This study evaluated the human thermal comfort in the Rio Grande do Sul state in Santa Maria city, based on regional atmospheric dynamics for years classified as standard rainier, less rainy and customary in representative months of fall and winter. Thus, was used the weather data base of the National Meteorological Institute (INMET) under which It was carried out to construct the database, where it was assigned the Effective Temperature Wind index (TEv). It was found that the active weather systems exert significant influence on human thermal comfort conditions in Santa Maria. This happens on representative months of autumn and winter, overlapping the effects of the geographical attributes such as altitude, continentality and marítmidade Keywords: human thermal comfort; atmospheric dynamics; standard years.</p><p><strong>Keywords</strong>: human thermal comfort, atmospheric dynamics, standard years.</p>
No espelho de muitas faces: miradas caleidoscópicas sobre arte e vida, currículo e formação
Authors: Mertins Mirian Celeste 
Published: May 2016

O presente artigo foi construído como miradas em um espelho de muitas faces onde se misturam e se condensam arte, vida e ciência. De que arte falamos quando olhamos a vida dentro e fora da escola? Dispensável, supérflua? As miradas nos revelam aspectos como num caleidoscópio que mira as livrarias, as escolas, os museus, as obras de arte, a formação inicial nos cursos de Pedagogia, a construção de uma poiesis, entre experiências vividas e teóricos parceiros. Frente a este espelho de muitas faces, é possível vislumbrar a importância das artes na contemporaneidade e, em especial, a atuação concreta, singular e necessária de quem nela acredita.
Educação e arte: a consolidação de um campo interminável
Authors: Pereira Marcos Villela 
Published: May 2016

O objetivo deste artigo é explorar algumas considerações acerca da educação, da arte e da relação entre elas, de modo a mostrar a condição interminável desse campo de estudo e investigação. Tomando como horizonte a formação de professores, reitero uma remessa ao entrecruzamento dos processos de subjetivação e o entendimento estético: a estética da existência como tema clássico na história da humanidade e a formação como um complexo e multifacetado processo de produção de subjetividade – formar os outros e formar a si mesmo como uma intrincada arte de existir. O lugar da arte na educação, a relação entre arte e educação, o lugar da arte na vida, o sentido da educação, as implicações entre a vida, a arte e a educação, quem vem antes, quem vem depois, quem depende de quem, quem se serve de quem: não tanto o conteúdo dessa problematização, não tanto as respostas, mas é o próprio movimento de perguntar que interessa ser problematizado. Como corpus de problematização, serão tomados quatro textos da importante arte-educadora brasileira Noêmia Varela, professora da Escolinha de Arte do Recife: “Criatividade na escola e formação do professor”, de 1972; “Movimento Escolinhas de Arte: imagens e idéias”, de 1973; “O desafio da formação de recursos humanos para a educação através da arte”, de 1977; e “A formação do arte educador no Brasil”, de 1984. O material será confrontado com categorias contemporâneas do campo da educação e da arte, buscando-se especular seu potencial infinito de investigação.Palavras-chave: educação e arte; educação estética; ensino de arte
La exclusión social en la teoría social de Niklas Luhmann
Authors: García Blanco José María 
Published: May 2016

El objetivo de este artículo es analizar el concepto de exclusión social en la teoría social de Niklas Luhmann. Se parte de una breve presentación del origen de dicho concepto en el ámbito de la investigación y la política social europeas, para poder ver el paralelismo temporal entre este desarrollo general del concepto y el que tiene lugar en la obra del sociólogo alemán. Luego, tras exponer y analizar lo que entendía Luhmann por exclusión, se pasa revista a su teoría acerca de los principales dispositivos de promoción de la inclusión y de lucha contra la exclusión de nuestra sociedad: el Estado de bienestar y su sistema de servicios sociales. Finalmente, se concluye con una propuesta sintética de las que considero aportaciones más relevantes realizadas por Luhmann a la problemática de la exclusión, tanto para la investigación social como para el diseño de las políticas sociales y de desarrollo. http://dx.doi.org/10.5902/6384
O acoplamento entre sociedade e economia: a teoria dos sistemas nas contribuições de Talcott Parsons e Niklas Luhmann
Authors: Neves Fabrício Monteiro , Aguilar Filho Hélio Afonso De 
Published: May 2016

Mais recentemente, a preocupação comum de sociólogos e economistas com temas que pareciam ser antes exclusivos à sociologia e à economia tem suscitado importantes reflexões sobre as possibilidades da cooperação interdisciplinar. Contribuições dos dois lados têm sido relevantes nesse sentido. Na economia, assiste-se ao resgate do institucionalismo, que, mesmo sobre novas roupagens, tem dado um caráter mais social às pesquisas econômicas. Na sociologia, o surgimento de uma disciplina específica, a Nova Sociologia Econômica, também caminha reforçando a preocupação com o caráter social dos fenômenos econômicos. O presente trabalho, à luz dessas preocupações, discute o imbricamento social da esfera econômica. A ênfase, contudo, é na Teoria dos Sistemas de Talcott Parsons e Niklas Luhmann, pelo entendimento de que esta, principalmente na perspectiva do segundo autor, pode apresentar contribuições tanto do ponto de vista formal quanto substantivo para aproximar o domínio econômico do social. http://dx.doi.org/10.5902/6387
Frequency and Clinical Impact of KRAS Mutations in Patients with Colorectal Cancer from the Middle East
Authors: Jamal Zekri  , Syed Mustafa Karim  , Ahmed Al-Shehri  , Mervat Mahrous  , Tarek Darwish  , Hani El Taani  
Published: May 2016

Background: Colorectal cancer (CRC) is a significant healthcare burden worldwide and in the Middle East (ME). KRAS mutation confers resistance to epidermal growth factor receptor (EGFR) inhibitors in the treatment of advanced CRC. Data regarding the rate of KRAS mutation from the ME are scattered and scarce. We aim to collect and review all sizable studies evaluating the frequency of KRAS mutations in CRC patients from the ME. Method: A Pubmed and Google Scholar search was conducted using keywords including KRAS, K-ras, colorectal cancer and Middle East, along with names of each ME country. Studies including over 90 patients were included in the review. Result: Eleven studies containing more than 90 patients were identified. Among all eleven studies, KRAS mutation rate ranged from 13 to 56%. Five studies reported KRAS mutation rate in M1 stage either exclusively or as part of subgroup analysis. In these studies, mutations were found in 8-45% of cases. KRAS mutations were associated with female gender, M1 stage and high CEA in 3, 2, and 1 studies respectively. Conclusion: There is a broad range of variability in KRAS mutation rate reported in different studies from the ME. This may have been due to small number of patients in the studies and lack of centralized testing for KRAS mutations. Larger and more coordinated studies from the ME population are required to ascertain the accuracy of KRAS mutation rate.
The role of precipitation and spatial organization in the response of trade‐wind clouds to warming
Authors: Vogel Raphaela , Nuijens Louise , Stevens Bjorn 
Published: May 2016

AbstractUsing highly resolved large‐eddy simulations on two different domain sizes, we investigate the influence of precipitation and spatial organization on the thermodynamic structure of the trade‐wind layer, under a uniform 4 K warming at constant relative humidity. In nonprecipitating simulations, the increased surface latent heat flux in the warmer climate produces a deeper and drier cloud layer with reduced cloud fractions between 1.5 and 4 km. Precipitation prevents the deepening and drying of the cloud layer in response to warming. Cloud fractions still decrease in the upper cloud layer, because stratiform outflow layers near cloud tops are less pronounced and because the larger liquid water contents are confined to narrower updrafts. Simulations on a 16‐fold larger domain lead to the spatial organization of clouds into larger and deeper cloud clusters. The presence of deeper clouds results in a shallower, warmer, and drier trade‐wind layer, with strongly reduced cloud cover. The warming response in the precipitating large‐domain simulation nevertheless remains similar to the small‐domain precipitating simulation. On the large domain, deeper clouds can also develop without precipitation, because moisture‐convection feedbacks strengthen in the absence of cold‐pool dynamics. Overall, total cloud cover and albedo decrease only slightly with warming in all cases. This demonstrates the robustness of shallow cumuli—in particular of cloud fraction near the lifting condensation level—to changes in the large‐scale environment.
A study of the molecular variants associated with lactase persistence in different Ecuadorian ethnic groups
Authors: Paz‐Y‐Miño César , Burgos Germán , López‐Cortés Andrés , Herrera Camilo , Gaviria Anibal , Tejera Eduardo , Cabrera‐Andrade Alejandro 
Published: May 2016

ObjectiveLactase persistence (LP) is an adaptive trait that certain human populations have acquired in response to lactose consumption in adulthood. The T‐13910 variant has been reported as a causal polymorphism in Europeans. The Ecuadorian population has been described as multicultural and multiethnic, comprised of three main ethnic groups (Mestizo, Native Amerindian, and Afro‐Ecuadorian). The aim of the study was to identify the molecular basis of LP in these admixed populations for the first time and determine the association between the T‐13910 marker and the European ancestry proportion of each ethnic group.MethodsGenotyping was performed in 741 Ecuadorian individuals by sequencing a 576 bp region around the ‐13910 position upstream of the LCT gene. The ancestry proportions of Mestizo, Afro‐Ecuadorian, and Native Amerindians were calculated using Ancestry Informative Markers and were compared with the diversity panel of the Human Genome Diversity Project.ResultsLP prevalence calculated from T‐13910 allele frequency in Mestizo, Afro‐Ecuadorian, and Native Amerindians was 24.4%, 16%, and 12.5%, respectively. The ancestry percentage correlated to the admixture proportion of each ethnic group, and the C/T‐13910 genotype frequency was influenced by the European ancestry proportion.ConclusionsThe presence of the T‐13910 polymorphism in the Ecuadorian population suggested that LP was a trait introduced by European migration and inherited by admixture that occurred during the colonization of South America. This variant was not fixed in a population with a history of admixture, and its allele frequency was proportional to the ancestry proportion of each Ecuadorian ethnic group. Am. J. Hum. Biol. 28:774–781, 2016. © 2016Wiley Periodicals, Inc.
Freestanding fiber mats of zeolitic imidazolate framework 7 via one‐step, scalable electrospinning
Authors: An Seongpil , Lee Ji Sun , Joshi Bhavana N. , Jo Hong Seok , Titov Kirill , Chang Jong‐San , Jun Chul‐Ho , Al‐Deyab Salem S. , Hwang Young Kyu , Tan Jin‐Chong , Yoon Sam S. 
Published: May 2016

ABSTRACTWe demonstrated the fabrication of freestanding zeolitic imidazolate framework 7 (ZIF‐7) nanofiber (NF) mats by means of one‐step, scalable electrospinning. The formation of ZIF‐7 nanoparticles embedded in polymer fibers was unambiguously pinpointed via X‐ray diffraction, transmission electron microscopy, and adsorption studies. The NF mats exhibited excellent characteristics, with an average diameter of 245 nm, in the adsorption and desorption of carbon dioxide (CO2); this makes them attractive candidates for gas separation and other selective filtration applications. This excellent property of the ZIF‐7 mats was explained by the gate‐opening phenomenon of ZIF‐7, which yielded a stepwise increase in the overall CO2 uptake capacity. The mechanical strength of the NF mats was also obtained via large‐strain uniaxial tensile deformation, which enabled preliminary assessment of the mat's suitability for textiles and membranes in targeting separation and filtration applications with large‐area permeability. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43788.