bluuebunny/crossref_metadata_2025 huggingface dataset:
A 3D Extra-Large Pore Zeolite Enabled by 1D-to-3D Topotactic Condensation of a Chain Silicate
Authors: Li Jian , Gao Zihao Rei , Lin Qing-Fang , Liu Chenxu , Gao Fangxin , Lin Cong , Zhang Siyao , Deng Hua , Mayoral Alvaro , Fan Wei , Luo Song , Chen Xiaobo , He Hong , Camblor Miguel A. , Chen Fei-Jian , Yu Jihong
Published: September 2022

Zeolites are microporous silicates that find an ample variety of applications as catalysts, adsorbents, and cation exchangers. Stable silica-based zeolites with increased porosity are in demand to allow adsorption and processing of large molecules, but challenge our synthetic ability. Here we report a novel, highly stable pure silica zeolite, ZEO-3, with a multidimensional, interconnected system of extra-large pores open through windows made by 16 and 14 SiO4 tetrahedra, which is the less dense polymorph of silica known so far. With a specific surface area over 1000 m 2 /g, ZEO-3 shows an extraordinary performance for Volatile Organic Compounds abatement and recovery. This zeolite is formed by a 1D-to-3D topotactic condensation of a chain silicate, an unprecedented, never predicted approach.
Gravitational settling of active droplets
Authors: Castonguay Alexander C. , Kailasham R. , Wentworth Ciera M. , Meredith Caleb H. , Khair Aditya S. , Zarzar Lauren D.
Published: September 2022

The gravitational settling of oil droplets solubilizing in an aqueous micellar solution contained in a capillary channel is investigated. The motion of these active droplets reflects a competition between gravitational and Marangoni forces, the latter due to interfacial tension gradients generated by differences in filled- micelle concentrations along the oil-water interface. This competition is studied by varying the surfactant concentration, the density difference between the droplet and the continuous phase, and the viscosity of the continuous phase. The Marangoni force enhances the settling speed of an active droplet when compared to the Hadamard-Rybczynski prediction for a (surfactant free) droplet settling in Stokes flow. The Marangoni force can also induce lateral droplet motion, suggesting that the Marangoni and gravitational forces are not always aligned. The decorrelation rate (𝛼) of the droplet motion, measured as the initial slope of the velocity autocorrelation and indicative of the extent to which the Marangoni and gravitational forces are aligned during settling, is examined as a function of the droplet size: correlated motion (small values of 𝛼) is observed at both small and large droplet radii, whereas significant decorrelation can occur between these limits. This behavior of active droplets settling in a capillary channel is in marked contrast to that observed in a dish, where the decorrelation rate increases with the droplet radius before saturating at large values of droplet radius. A simple relation for the crossover radius at which the maximal value of 𝛼 occurs for an active settling droplet is proposed.
Structural Basis for Inhibition of Mutant EGFR with Lazertinib (YH25448)
Authors: Heppner David , Beyett Tyler , Shaurova Tatiana , Pham Calvin , Wittlinger Florian , Schaeffner Ilse , Yang Bo , Ogboo Blessing , Laufer Stefan , Eck Michael , Hershberger Pamela
Published: September 2022

Lazertinib (YH25448) is a novel third-generation tyrosine kinase inhibitor (TKI) developed as a treatment for EGFR mutant non-small cell lung cancer. To better understand lazertinib inhibition at the molecular level, we determined crystal structures of lazertinib in complex with both WT and mutant EGFR and compared its binding mode to that of structurally-related EGFR TKIs. We observe that lazertinib binds with the novel pyrazole moiety involved in hydrogen bonds and van der Waals interactions consistent with drug potency and T790M mutant selectivity. Biochemical assays and cell studies confirm that lazertinib effectively targets EGFR(L858R/T790M) and to a lesser extent against HER2 as consistent with an improved toxicity profile. The molecular basis for lazertinib inhibition of EGFR reported here highlights new strategies for structure-guided design of tyrosine kinase inhibitors.
Proton-Donating and Chemistry-Dependent Buffering Capability of Amino Acids for the Hydrogen Evolution Reaction
Authors: Brown John , Grimaud Alexis
Published: September 2022

The hydrogen evolution reaction (HER) has been widely demonstrated to have a strong dependence on pH and on the source of protons, where a clear kinetic advantage arises in acidic conditions over near-neutral and alkaline conditions due to the switch in reactant from H3O+ to H2O. Playing on the acid/base chemistry of aqueous systems can avoid the kinetic frailties, for example, buffer systems can be used to maintain proton concentration at intermediate pH driving H3O+ reduction over H2O. In light of this, we examine the influence of amino acids on HER kinetics at platinum surfaces using rotating disk electrodes. We demonstrate that Aspartic acid (Asp) and Glutamic acid (Glu) can act not only as proton donors, but also have sufficient buffering action to sustain H3O+ reduction even at large current density. Comparing with Histidine (His) and Serine (Ser), we reveal that the buffering capacity of amino acids occurs due to the proximity of their isoelectric point (pI) and their buffering pKa. This study further exemplifies HER’s dependence on pH and pKa and that amino acids can be used to probe this relationship.
Towards a mechanically rechargeable solid fuel flow battery based on earth-abundant materials
Authors: Fenton, Jr. Alexis M. , Ashraf Gandomi Yasser , Mallia Christopher T. , Neyhouse Bertrand J. , Kpeglo M. Aba , Exson William E. , Wan Charles Tai-Chieh , Brushett Fikile R.
Published: September 2022

Metal-air batteries are a promising energy storage solution, but materials limitations (e.g., metal passivation, low active material utilization) have stymied their adoption. We investigate a solid fuel flow battery (SFFB) architecture that combines the energy density of metal-air batteries with the modularity of redox flow batteries. Specifically, a metallic solid electrochemical fuel (SEF) is spatially separated from the anodic current collector; a dissolved redox mediator shuttles charge between the two, and an oxygen reduction cathode completes the circuit. This modification decouples power and energy system components while enabling mechanical recharging and mitigating the effects of non-uniform metal oxidation. We conduct an exploratory study showing that metallic SEFs can chemically reduce organic redox mediators repeatedly. We subsequently operate a proof-of-concept SFFB cell for ca. 25 days as an initial demonstration of technical feasibility. Overall, this work illustrates the potential of this storage concept and highlights scientific and engineering pathways to improvement.
CONSTRUYENDO EL FUTURO DE LATINOAMÉRICA: MUJERES EN STEM
Authors: Camacho Amparo , García Peñalvo Francisco , García Holgadp Alicia , García Lucy , Peñabaena Rita
Published: September 2022

En la actualidad, todavía existe una brecha de género en las profesiones STEM (ciencias, tecnología, ingeniería y matemáticas) en el campo de la educación como del trabajo, aunque en las últimas décadas se ha dado un progreso relativamente significativo en el avance para la igualdad de genero en diversas dimensiones de la vida humana; esta brecha presenta diferencias entre países y es más profunda en aquellos países que presentan sesgos por estereotipos de genero o normas culturales que influyen en el comportamiento femenino y del entorno familiar de las niñas y mujeres. Según el Foro Económico Mundial [1], las mujeres en el ámbito académico y en el laboral están subrepresentadas en los campos relacionados con STEM, y menos de un tercio de las estudiantes de educación superior eligen estudiar asignaturas con contenidos en matemáticas y propios de la ingeniería. De hecho, solo alrededor del 30% de las investigaciones realizadas en el mundo son desarrolladas por mujeres y quienes trabajan en áreas de conocimiento STEM publican menos y, a menudo, reciben menos remuneración. Si bien esta es una problemática mundial, se ve agudizada en America Latina y el Caribe en donde sólo 5 de los 33 países analizados tienen un índice de desarrollo humano considerado "alto", según la UNESCO [2].Este contexto nos plantea un reto a las instituciones de educación superior de America Latina, por lo cual y con el propósito de formular e implementar soluciones frente a este problemática desde la educación superior, se conformó un consorcio de universidades europeas y latinoamericanas, 15 socios alrededor de 10 países, para el desarrollo del proyecto: “Building the future of Latin America: engaging women into STEM (W-STEM)”. Este proyecto está siendo financiado en el marco del programa de la Unión Europea para creación de capacidad en America Latina, por medio del programa ERASMUS +.W-STEM tiene como objetivo mejorar las estrategias y mecanismos de atracción, acceso y orientación de las mujeres en los programas de educación superior STEM de América Latina.Este trabajo presenta las principales actividades desarrolladas en el proyecto y los resultados logrados por el consorcio, particularmente los de las universidades colombianas manera de ilustración.Referencias:[1] Kahn, S., & Ginther, D. (2017). Women and STEM (No. w23525). National Bureau of Economic Research. [2] Alessandro Bello, “LAS MUJERES EN CIENCIA, TECNOLOGÍA, INGENIERÍA Y MATEMÁTICAS EN AMÉRICA LATINA Y EL CARIBE”, ONU MUJERES, Mayo 2020.
Promoción de la lectura a través del cine durante la pandemia del covid-19
Authors: Hernández Reyes Julián Francisco , Ojeda Ramírez Mario Miguel , Sánchez Sosa Erika Rubí
Published: September 2022

En este artículo se presentan los resultados de una intervención de promoción de la lectura realizada en Xalapa, Veracruz, durante la pandemia de covid-19. Desde la perspectiva de la literacidad, el enfoque constructivista y el aprecio por la lectura a través del cine, los espectadores fueron guiados hacia géneros literarios diversos para favorecer la creación de lectores capaces de comprender críticamente lo que leen mediante inferencias basadas en su contexto personal. A través de una investigación-acción participativa, se desarrolló un taller con tres objetivos fundamentales: fomentar la lectura, mostrar la relevancia de la literatura en la cultura y sociedad, y favorecer procesos de comprensión lectora. Se concluye que la dupla cine-literatura es factible para este propósito.
Caracterização espectrorradiométrica (VNIR-SWIR) do minério magnesítico da porção centro-sul do estado do Ceará
Authors: Souza Cassiano D. de , Duarte Cynthia R. , Miranda Mateus de P. , Oliveira Marcio R. R. de , Ribeiro Sharon G. , Teixeira Adunias dos S.
Published: September 2022

Due to the practicality, speed and low cost of operation, the use of spectroradiometry has become an important tool in determining the composition of materials, being used in the characterization of boreholes, support and orientation of mining fronts, and as support to interpretation of remote sensing images. To perform the spectroradiometric characterization of the magnesitic ore of the state of Ceará (Brazil), the FieldSpec Pro FR spectroradiometer (350 to 2500 nm) was used. The samples were collected from the mines Cabeça de Negro, Riacho Fundo and Torto, and subsequently cut and polished in order to obtain uniform surfaces, and thus minimize the effect of the sample relief and of any surface weather. Data acquisition was carried out in the laboratory, without any interference from external lighting, with three spectral measurements made at different points of each sample. The spectral features that characterized the analyzed ore were attributed to iron (350 to 750 nm, 1000 nm and 1700 nm), water/hydroxyl (1390 nm, 1440 nm and 1940 nm), to the Mg-OH bond (2070 nm and 2390 nm) and carbonate (1850 nm, 1970 nm, 2130 nm and 2300 nm), with the albedo and intensity of the features being influenced by the presence of organic matter and particle size. According to the spectral characteristics, the magnesitic ore studied could be classified into four distinct groups, called hydrated magnesite, anhydrous magnesite, ferrous magnesite and carbonaceous magnesite.
Avaliação da Influência da Topografia Sobre o Comportamento Espectral de Alvos Semelhantes na Integração de Dados LiDAR e do Sensor OLI
Authors: França Albino Ferreira  de , Tavares Junior João Rodrigues , Candeias Ana Lúcia Bezerra , Matos Rafaella Chrystiane de Moura
Published: September 2022

Este artigo aborda a análise da interferência da topografia no comportamento espectral dos alvos presentes em imagens multiespectrais, fusionados pelo método de Brovey. Para isso foram usadas áreas com alvos, dados LiDAR (Light Detection And Ranging) para obter os dados do terreno (Modelos Digitais de Terreno, em escala 1:5000, do Programa Pernambuco Tridimensional), imagens de satélite multiespectrais obtidas a partir do sensor Operational Land Imager (OLI) do Landsat 8, e o Software livre QGIS. Os resultados demonstram relação da variação dos valores de reflectância em função da topografia do terreno e da posição do Sol em relação à área imageadas.
Estudo da variabilidade de índices de vegetação utilizando análise de agrupamentos
Authors: Gusmão Ana Claúdia Villar e Luna , Rodrigues Diogo Francisco Borba , Araújo Diego Cezar dos Santos , Viana Jussara Freire de Souza , Montenegro Suzana Maria Gico Lima
Published: September 2022

Nas últimas décadas, a utilização das técnicas de sensoriamento vem contribuindo de forma significativa para a identificação de alterações que ocorrem na superfície terrestre. Levando-se em consideração a utilização dos produtos do sensor MODIS para o gerenciamento de bacias hidrográficas, o presente estudo tem como objetivo determinar os índices de vegetação IAF (índice de área foliar) e EVI2 (índice de vegetação melhorado) na bacia hidrográfica do rio Tapacurá, localizada no Estado de Pernambuco e, diante disso, realizar, de forma automática, o mapeamento do uso e cobertura da terra, com abordagem na mineração das séries pelo método de agrupamento. A técnica permite avaliar a dinâmica dos diferentes grupos de vegetação frente ao regime pluviométrico da bacia. Os índices de vegetação utilizados neste estudo foram obtidos a partir do produto de reflectância MOD09Q1 entre dois anos com regimes pluviométricos distintos: 2011 (ano chuvoso) e 2012 (ano seco). Foi realizada a mineração das séries temporais dos índices de EVI2 e IAF por meio da análise de agrupamento. Comparando a série para os dois anos, percebeu-se uma significativa diminuição dos índices de vegetação para o ano de 2012, cuja precipitação foi bem inferior ao ano anterior. Assim, conclui-se que a mineração das séries de IAF e EVI2 mostrou-se eficaz pelo método de agrupamento para o estudo da variabilidade que, para a área estudada, gerou grupos representativos de áreas de policultura e vegetação rasterira, cana-de-áçucar, áreas de transição de mata, mata, água e região urbana.
Probable nexus between Methane and Air Pollution in Bangladesh using Machine Learning and Geographically Weighted Regression Modeling
Authors: Hassan Md. Shareful , Bhuiyan Mohammad Amir Hossain
Published: September 2022

This paper investigates the probable nexus between methane (CH4) and air pollutants, a public health hazard in Bangladesh. The hypothesis considers that the concentration of CH4 is dependent on the ten air pollutants found in the five districts in Dhaka Division, a major urban and industrial area in Bangladesh. These pollutants are: Particular matters (PM2.5), Nitrogen dioxide (NO2), Nitrogen oxide (NOx), Aerosol optical thickness (AOT), Sulfur dioxide (SO2), Carbon monoxide (CO), Ozone (O3), Black carbon (BC), Formaldehyde (HCHO) and Dust. The study applies Machine Learning (ML) technique and Geographically Weighted Regression (GWR) Modeling. Temporal CH4 datasets from the Sentinel-5P sensor are classified to estimate the annual CH4 concentration during 2019-2021.Seven supervised classifiers of ML coupled with the GWR model are used to predict the statistical and spatial relationships. CH4 increases gradually during 2018-2021 in Dhaka, Gazipur, and Munshiganj Districts. It relates differently with various air pollutants, e.g., positively with BC, Dust, NO2, PM2.5, O3, and AOT, and negatively with NOx, CO, HCHO, and SO2.This study results that Rational quadratic (RMSE-0.001, MAE-0.001, R2-0.96), Random Forest (RMSE-0.004, MAE-0.003, R2-0.91), and Stepwise regression (RMSE-0.002, MAE-0.002, R2-0.87) are the suitable method in ML. The highest goodness-of-fit (R2) of 82%-96% is found in Dhaka and Narshingdi Districts. The key findings may help formulate the appropriate action plan to mitigate ongoing and future air pollution in Bangladesh. In addition, the methodology of the research may be applicable elsewhere nationally and internationally for air pollution research.
SPATIOTEMPORAL VARIATION OF THE VEGETATION INDEX BY NORMALIZED DIFFERENCE IN THE HYDROGRAPHIC BASIN OF PERNAMBUCO SEMIARID, BRAZIL
Authors: Costa da Silva Karoline Juliana , Oliveira Lopes Pabrício Marcos
Published: September 2022

Remote sensing is an important mechanism for spatiotemporal monitoring of vegetation. Vegetation indexes have been widely used in monitoring vegetated areas, to determine and estimate the index of leaf area, biomass, and photosynthetically active radiation, among others. In these indexes, the Normalized Difference Index Vegetation (NDVI) stands out, which indicates the health status of a vegetative canopy. Considering the proven applicability of this index, in addition to the relevant importance of the Caatinga biome, related to the need for monitoring at the expense of desertification processes, the article aimed to analyze temporal variations of the NDVI in a hydrographic basin of the Brazilian semiarid region, in the municipality of Itacuruba/PE, Brazil. The study area covers a hydrographic basin belonging to the São Francisco River. Remote sensing techniques were used to estimate the NDVI in four orbital images provided by NASA/USGS in the year 2020, with less than 10% clouds. Then, the data were subjected to descriptive statistical analysis to obtain minimum, maximum, mean, standard deviation, and coefficient of variation values. The results showed that the NDVI presented values ranging from -0.30 to 0.57. The means found ranged from 0.16 to 0.23 for the months studied, as well as in the standard deviation values, values between 0.06 and 0.09 were found, corroborating other correlated studies in the region. The coefficient of variation data showed average variability, according to the Warrick & Nielsen classification criteria. It is noteworthy that, in addition to the dry climate of the region, the shrubby vegetation presents physiological defense characteristics such as the fall of foliage. It was concluded that the use of remote sensing was effective in evaluating the spatial-temporal dynamics of the vegetation index in the watershed, managing to measure environmental variations at the expense of climate change.
Evaluation of environmental degradation on Biomes in Brazilian Northeastern
Authors: Batista Bárbara Alves , Correia Filho Washington Luiz Félix , Santos Carla Taciane Brasil dos , Oliveira Júnior José Francisco , Santiago Dimas de Barros
Published: September 2022

In recent years, due to irregular rainfall, several regions across the globe have suffered from some environmental degradation. Depending on the degree of intensity, they can lead to a series of socioeconomic problems, both regional and national. One of the most emblematic types of degradation today is the desertification development process, resulting in a combination of anthropic, climatic, and/or environmental factors. In an attempt to understand the behavior of these impacts, this work evaluated the degradation process based on the Aridity Index (AI) on biomes located in the Brazilian Northeast (Caatinga, Atlantic Forest, Amazon, and Cerrado). The AI consists of the relationship between evapotranspiration (in this case, the Thornthwaite estimation method) and precipitation. The data used correspond to the product Climatologies at high resolution for the earth's land surface areas (CHELSA), which have a spatial resolution of 1km x 1km and temporal resolution on a monthly scale, from 1979 to 2013. In addition, it was found that the AI behavior during years of the El Niño-Southern Oscillation (ENSO) warm phase, the El Niños. The identification of El Niño episodes was based on the Oceanic Niño Index (ONI) climate proxy, characterized by the Equatorial Pacific region known as the Niño 3.4 region. The years 1983, 1993, 1998, and 2012 were selected. AI results point out different behaviors between the biomes, mainly over the south of the northeastern Cerrado and the Caatinga, motivated by the strong variability of rainfall in the respective regions. The Caatinga stands out, which exhibited a large part of its area was classified as arid (AI between 0.05 – 0.20) and hyper-arid (AI < 0.05), mainly in 2012. The Amazon and biomes, on the other hand. Atlantic Forest has areas classified as semi-arid (AI < 0.5). El Niño had a reduction in the AI values, motivated by the long periods of drought and irregular rainfall that negatively impacted the semi-arid of the Northeast region.
Disponibilidade hídrica e classificação climática no estado do Piauí
Authors: Sousa e Silva Laila Lucia , De Oliveira Silva Raiany , Siqueira Tavares Fernandes Gabriel , De Moura Neto Arão , Guimarães Miranda Ana Caroline , De Araujo Lima Edivania
Published: September 2022

As diferentes formas de classificação climáticas permitem descrever as características da atmosfera ao longo do planeta, a partir de variáveis meteorológicas e climáticas. Com as atuais situações de mudanças climáticas é fundamental o monitoramento climatológico para compreender as relações água-vegetação-atmosfera. Diante disso, este trabalho teve como objetivo quantificar a disponibilidade hídrica através do Balanço Hídrico Climatológico e realizar a classificação climática de acordo com Thornthwaite no Estado do Piauí. O estudo foi realizado no Estado do Piauí, no Nordeste brasileiro, com os dados obtidos a partir da plataforma do Instituto Nacional de Meteorologia, compostos pela normal climatológica de 1981-2010, sendo executado o Balanço Hídrico Climatológico, com auxílio do software Excel, determinando o índice de Umidade e realizando a classificação climática, com a metodologia de Thornthwaite (1948). A interpolação dos dados foi feita pelo método de IDW com o software QGIS. Foi possível observar que o Estado do Piauí apresenta disponibilidade hídrica restrita na maior parte do território, com alta deficiência hídrica e excesso hídrico em uma pequena porção do Estado. Além de ser caracterizado por dois tipos climáticos, Semiárido (D) e Subúmido seco (C1).Palvras-chave: Aridização, Distribuição espacial, Oferta hídrica.
USE OF TOOLS GEOPROCESSING FOR IDENTIFICATION OF URBAN HEAT ISLANDS IN TERESINA- PI
Authors: Monteiro Felipe Ferreira
Published: September 2022

The land cover suffer constantly modifications caused by human activities or natural processes. The unplanned urban expansion is considered an aggravating factor for changes in local climate and possible formation of urban heat islands. Considering the importance of changes in land cover and its influence on the surface temperature, we performed a spatio-temporal analysis of Waterproof Surface Area (ISA), land use and its thermal field, using remote sensing techniques to the following neighborhoods: Ininga, Fatima, Joquei Club and Grooms in Teresina, PI. In parallel we could assess the evolution of the emergence of new asphalt roads, using data provided by the city planning department. It was observed a strong correlation between building materials and paving with the temperature rise of about 40C in the region, due to the increase in the use of materials such as concrete and asphalt. One of the factors observed was the intense waterproofing of the area, therefore the removal of vegetation cover and an increase of 134% asphalt coverage, and the construction of major projects in the region.
MANGROVE VEGETATION STRUCTURE OF THE CAPIBARIBE RIVER, RECIFE - PE: MONITORING AND CONSERVATION
Authors: Torres Maria Fernanda Abrantes
Published: September 2022

The mangrove ecosystem is a coastal, transitional between the terrestrial and marine environment, characteristic of tropical and subtropical regions. It consists of woody plant species, called mangroves, to which an associated characteristic flora, creating favorable conditions for food, protection and reproduction of many animal species. The mangroves that thrive in estuaries that flow in the Metropolitan Region of Recife ecosystems are valuable to the city and its surroundings, but are undergoing various types of tensioners that come accelerating its degradation. The Capibaribe is one of the major rivers of Recife and the urban sprawl of recent decades has been responsible for the degradation of its environmental resources, especially mangroves, thus compromising the quality of life of coastal communities. In this context, the present work is to evaluate the structure of mangrove vegetation in the lower course of the river Capibaribe, to provide data for future conservation actions and monitoring the area. The structural characterization was adopted the methodology of multiple plots, demarcated at three sites in that swamp. The swamp was formed predominantly by the species Laguncularia racemosa, with structural parameters of average height ranging from 7.69 to 12.90 m and a maximum of 12 to 16 m and basal area average between 1.54 and 4.12 m² / ha . We recorded a minimum of 400 and a maximum of 4400 stems / ha and the density ranged from 400 to 2100ind/ha. The composition and structural data presented by mangrove vegetation in the lower course of the river Capibaribe reflect tensor anthropogenic actions to which the ecosystem is being submitted.
VEGETATION INDEX IN THE SÃO GONÇALO IRRIGATED PERIMETER - PB
Authors: Braga Alexandra Chaves
Published: September 2022

The municipality of Sousa is cut by rivers Piranhas and River Fish , and holds a great potential for exploiting its water resources, aiming at the improvement of agriculture . The Irrigated São Gonçalo - PISG is located 15 km from the city of Sousa - PB located approximately 444Km from the capital João Pessoa . The weir São Gonçalo is inserted in the watershed of Alto de Piranhas , sub -basin of the Rio Piranhas in western Paraíba in northeastern Brazil , whose construction works started in 1932 and completed in 1936 . Its hydro capacity is 44.6 million cubic meters , with the objective of attenuating the effects of drought suffered by the local population . The main objective of this work was to study the variability of NDVI obtained by the product MODA13 MODIS / Terra and monthly precipitation in March and September 2008 to 2012 with the aim of detecting possible changes in vegetation in the rainy months and dry region . For this we applied the algorithm SEBAL (Surface Energy Balance Algorithm for Land) which is one of the most used to extract information from satellite sensors . The study area includes areas of native vegetation ( caatinga ) , rice cultivation and irrigated areas with fruit , especially the production of coconut and bananas. The results MODIS to month dry and wet area PISG apresentam average for the three targets studied , ie consortia banana / coconut, rice and native vegetation NDVI values ​​of 0.39, 0, 43 and 0.40 for the dry month and 0.63 , 0.62 and 0.77 for the rainy month . Given the results found that MODIS / Terra presented a mean correlation coefficient ( r ) of the order of approximately 0.88 and average error of 9 % between NDVI and rainfall for the months of March and September . This shows that the rains are important in the development of vegetation , even in the case of irrigated period.
THE STAGES OF THE DESERTIFICATION IN DIFFERENT TYPES OF SOIL IN THE SEMIARID PARAÍBA
Authors: Duarte Simone Mirtes Araújo
Published: September 2022

The intersection of the outline information of the classes of soils and levels of degradation of land in SPRING V.4.2 allowed an assessment of conservation status of these, providing a first impression of what would probably be found in the field. The field work, and confirmed, helped in the interpretation and final conclusions on the levels of land desertification. The studies showed that the soils are quite eroded at different stages. Considering that the levels of degradation of land moderate, severe and very severe define the more advanced stages of desertification, showed that 82% of Cambisols, Luvisols of 85%, 78% of Neosols Regolithic and 89% of Neosols Litólicos are severely compromised the process of desertification. The commitment of Neosols Flúvicos is around 69%. This impairment is associated with the use of these soils in construction, in the manufacture of ceramics, but also by the launch of the presence of sewage and garbage and dead animals. These data, quite negative for the entire area of the city reflect the impacts caused by inadequate management of land, the pressure exerted by extensive livestock, which resulted and result in accelerated erosion processes, due to lack of technical assistance to farmers by the competent bodies to the adoption of practices related to soil conservation, and non-compliance with environmental legislation.
PERFORMANCE ANALYSIS OF DIGITAL ELEVATION MODELS - A CASE STUDY OF BASIN LOW MIDDLE SÃO FRANCISCO RIVER
Authors: Silva Madson T. , Da Silva Vicente de P. R. , De Souza Enio Pereira , De Oliveira Verônica G.
Published: September 2022

Corresponding author: madson_tavares@hotmail.comThe performance assessment of digital elevation models, from the handling of the mission SRTM elevation data , ASTER imager instrument , and project TOPODATA compared to elevation data obtained in the field from GPS was the aim of this work, in view the adequacy of the best model for use in studies of morphometric analysis of watersheds , as well as applications in hydrological models . To conduct this study we used the ArcGIS 9.3 software. The results demonstrate that the elevation data extracted from SRTM , ASTER and TOPODATA are extremely satisfactory for presenting high correlation with the data collected by GPS (r = 0.97 , 0.96 and 0.97 , respectively) , was also observed that the smallest errors associated were obtained for the SRTM DEM , being observed PBIAS equal to 2.71 % and MAE of 11.45 m . Finally from the index c Camargo & Sentelhas be excellent in the criterion of model performance. In conclusion it was observed that the DEM SRTM showed the best results, possibly due to the lower number of cells to compose your image, thus generating more homogeneous areas than other models.
SOCIAL AND ENVIRONMENTAL HYDROGRAPHICS IMPLICATIONS OF THE LAND USE IN THE PLAIN AND COASTAL BOARDS BETWEEN ILHÉUS AND OLIVENÇA – BA
Authors: Silva Kaique Brito , Gomes Ronaldo Lima , Rego Neylor Alves Calasans
Published: September 2022

Between the diverse units geomorphologicals of the Bahia, are presents also the coastal plains and the coastal trays. Following to present line of beach, healthy noticed by its sandy forms, with colorings homogeneous. Diverse works exist about the genesis litologics of those geomorphological rooms. It researches of big relevance published in national scope as the of Suguio (1975), Martin (1976) and Dominguez (1980) attribute of unanimous form the genesis of the present coastal plain and trays to the interactions between the erosive forces of the sea and depositional conditions on the part of the continental rivers. The objective of that work was map the Coastal Plain and the Coastal Tray in the stretch between Ilhéus and Olivença, and discuss about the activities of use of him soil that grant hidrographics impacts and partner-environmental about both. It was carried out the mapping in scale of detail (1:5.000) of the coastal plain utilizing image IKONUS high-resolution. The corresponding zone to the plain at present is utilized in diverse typologies of use of him soil, since cultivations to property lots. The friable texture of the substrate implies in a sensibility the antropological interventions in the same one. The deforestation in the trays, the urban growth, the extraction of sand and the absence of specific plannings for those rooms geomorphologicals are the present causes of hidrographics degradation and partner-environmental problems to same. The intention of that work is going to dispose facts for contribute with better planning in the area of study
Performance Measure-Based Band Group Selection for Agricultural Multispectral Sensor Design
Authors: Lee Matthew Allen
Published: September 2022

Hyperspectral sensors are unfortunately plagued by relative high financial cost and they require large amounts of storage and computation. Too often, these factors limit their applicability in precision agriculture and in particular application requiring real-time signal processing. On the other hand, multispectral sensors are less expensive and require far less computational resources. If the task of the sensor or its platform is well known ahead of time, then it can be beneficial to design a multispectral sensor to accomplish the task as long as the performance is not degraded. In this article, we explore the design of a task specific multispectral sensor based on a new band grouping technique. Band grouping algorithms typically rely on a proximity measure to determine how similar (or dissimilar) the information contained in hyperspectral bands are to each other. Similar bands are then grouped. However, the proximity measure typically does not take into account the interactions of different band groups or how band groups will be used. The theory put forth in this article is unique because it makes global decisions for band groups by utilizing a performance measure to gauge the effectiveness of random partitionings at some given task, such as classification or anomaly detection. The band groups that are most correlated with good performance are then selected. Our technique is compared to the uniform partitioning technique using the Pecan1 data set. The results show that the overall accuracy is better with our technique when the same number  of band groups are selected.
Wind power potential for irrigation of rice and maize using geoprocessing in the Baixo Jaguaribe river basin, Ceará State - Brazil
Authors: Rodrigues Gláuber Pontes , Praciano Aline Castro , Costa Juliana Alcântara , Albiero Daniel
Published: September 2022

Realizing that there is currently a larger search for renewable energy sources and that the coastal region of Ceará has a strong wind potential, this work proposes to demonstrate, through geoprocessing techniques, the feasibility of using wind energy systems in the irrigation of corn and rice crops in the Baixo Jaguaribe sub-basin. The production map of these crops and the Atlas of Wind Potential in Ceará State were overlaid with the help of ArcGIS software. After the processing, it was verified that only 4.15% of the territory of the basin studied has winds capable to install wind energy systems, with predominance of winds between 6.0 and 7.0 m.s-1. The use of other sources of renewable energy for irrigation purposes is suggested for this region.
Modern agriculture in the Cerrado Biome: continuing the disrespect of nature
Authors: Brandão Robson José Alves , Castilho Cláudio Jorge Moura de , Moraes Hugo Arruda de
Published: September 2022

This article has the intention of revisiting the way in which society still goes on destroying nature by its actions, which are more linked to the generation of values turned towards profit than towards the formation of social well-being in its complexity. This is analyzed in the expansion of modern agriculture over the Cerrado biome’s original vegetation cover (an environment most often compared to Savannah). The elaboration and interpretation of maps made to demonstrate the growth of modern agriculture and, at the same time, the reduction of natural vegetation, under the light of an interdisciplinary approach to understand the complexity of the world in its permanent movement, constituted what was essential in the methodology which was chosen to carry out this work. The main result of the research came through in demonstrating that nature continues to be repressed by the forces which destroy the environments where men and women live, within territories of the Cerrado biome, in spite of all of the advances which have occurred at the levels of thinking, of legislation and of practices implemented to seek control of such forces.
Radiation and energy balance in dwarf coconut tree with Landsat 8 images in the State of Ceará, Brazil
Authors: Teixeira Antônio Heriberto de Castro
Published: September 2022

Aiming to subsidize the rational management of irrigated dwarf coconut trees with different ages, Landsat 8 images (L8) and climatic data were used through the SAFER algorithm throughout the year 2016 to model the radiation and energy balance of the crop , In the municipality of Camocim, State of Ceará, Northeast Brazil. Despite the similar patterns in the trends of energy balance components among areas with different plant ages throughout the year, evaporative fraction values (Eff) showed limits of 0.58 in the area with plants from three years to 1, 50 in the area with five-year-old plants. The results indicated the need to control the vegetation between the rows in the rainy season with mulching, with consequent moisture conservation in the root zone during drier periods. The algorithm proved to have a strong sensitivity to quantify the energy and mass changes in irrigation plot scales by the union of remote sensing and climatic data.
Spatial and temporal distribution of soil moisture using remote sensing techniques
Authors: Silva Jhon Lennon Bezerra da , Arraes Francisco Dirceu Duarte , Oliveira José Diorgenes Alves , Moura Geber Barbosa de Albuquerque , Bezerra Alan Cezar
Published: September 2022

The determination of soil moisture distribution is complex and timely, making it unable to describe the behavior of its spatial and temporal distribution on a regional scale. The objective of this study was to estimate and evaluate the spatial and temporal variability of soil moisture by means of the instantaneous evaporative fraction in the semi-arid region using remote sensing data. Three images of the Landsat 5 sensor satellite TM were used on September 21, 2008, June 20, 2009 and August 29, 2011, covering the area of study: Iguatu, Brazilian semiarid. These images were processed from the ERDAS imagine 9.1 software, where the radiometric calibration and the conversion to radiance and reflectance were performed through complementary surface data using the SEBAL algorithm. The thematic maps of the energy balance biophysical parameters: instantaneous evaporative fraction (FE) and the degree of soil moisture saturation (θ / θsat) were processed by ArcGis® 10.2.2 software. The descriptive statistics was used to determine the differences of FE and θ / θsat in relation to the anthropological actions and the local climate of the region. Therefore, the monitoring of these biophysical parameters, especially the degree of soil moisture saturation, showed to be an effective part of the energy balance, configuring before them the power to make decisions regarding environmental aspects. The estimation of the spatial pattern of the degree of soil moisture saturation presented consistent values for the different uses and occupations of the soil, showing a great relation with the values of the evaporative fraction in all the images studied.
Analysis of drought severity by orbital data: Effects in northeastern of the Brazil
Authors: SILVA MICHELLE FERREIRA , CERQUEIRA MICHELLE ADELINO , SANTOS BRUNA KALINE DE LIMA , FREITAS DIANA FERREIRA DE
Published: September 2022

The Brazilian Northeast faces a serious threat of water scarcity. The situation could still be intensified due to prevailing drought conditions. Therefore, there is a need for consistent monitoring of drought to observe its severity, duration and extent, to ensure effective planning and to mitigate its possible adverse effects. In view of this aspect the objective of this work is to quantify the environmental conditions for drought in the years 2010 and 2016 through the Drought Severity Index (DSI) algorithm, to compare the spatial events of drought in the States of Ceará, Rio Grande do Norte, Paraíba, Pernambuco and Alagoas, using orbital data from the MODIS / Terra sensor products NDVI and LST. The Drought Severity Index (ISD) were calculated and mapped to identify regions prone to spatial scale drought. The results suggest that there were DSI variations for the years analyzed, 2010 and 2016. In 2010, high drought patterns were recorded in the Sertão region of the States analyzed; Ceará, Rio Grande do Norte, Paraíba, Pernambuco and Alagoas, with values ranging from -1.19 to - 1.49 of DSI. However, the values corresponding to moisture levels obtained a small spatial distribution, with values in the range of 1.19 - 1.49. On the other hand, for the year 2016 the DSI presented a greater temporal reach, with extreme drought index, <-1.50, in the month of November. The present study evidences the importance of orbital data monitoring, as well as the application of the index in drought monitoring at high spatial and temporal scales.
Dinámica de la absorción de nutrimentos en el cultivo de papa (Solanum tuberosum) variedad Superchola, para la producción de semilla prebásica
Authors: Arteaga Chamorro Gustavo Alejandro , Ortiz Calle Randon Stalin , Cartagena Ayala Yamil Everaldo
Published: September 2022

Las curvas de absorción de los nutrientes permiten elaborar planes de fertilización óptimos para alcanzar un mejor rendimiento y calidad de los tubérculos en papa. La investigación se desarrolló en la Estación Experimental Santa Catalina (EESC) del Instituto Nacional de Investigaciones Agropecuarias (INIAP - Ecuador). El objetivo fue determinar las curvas de absorción de los nutrientes (N, P, K, Ca, Mg y S) en la producción de semilla de papa prebásica con diferentes soluciones nutritivas en condiciones de invernadero, en suelo como sustrato y con plántulas provenientes de esquejes de la variedad Superchola. Se estudiaron cinco soluciones nutritivas: Testigo (T1), Método Racional (T2), INIAP (T3), Steiner (T4) y Pilvicsa (T5). Se utilizó un diseño completamente al azar. Se evaluó la biomasa seca total, absorción de nutrientes (cuatro etapas fenológicas) y rendimiento. Los resultados principales mostraron que: i) la mayor cantidad de biomasa se obtuvo en T5 con 205.68 g planta-1; ii) la absorción de nutrientes en T5 presentó los mayores valores de N, P, K, Ca, Mg y S, con 4.4, 0.97, 8.25, 1.57, 0.52 y 0.55 g planta-1, respectivamente; iii) T5 presentó un rendimiento de 10.73 t ha-1 y T4, 10.63 t ha-1, y iv) el modelo logístico utilizado presentó coeficientes de determinación del 90%. En conclusión, el tratamiento T5 (Pilvicsa) presentó mejores resultados en biomasa, absorción de nutrientes y rendimiento.
A Bibliometric Analysis of Health and Medicine Research in Uganda
Authors: Kasule A , Mutebi B , Ssentumbwe A
Published: September 2022

Background: Research is one of the many domains that help countries to provide solutions to various challenges and improve facilities. The bibliometric analysis measures the research output of individuals/research teams, institutions, and countries and identifies national and international research networks across the globe.
Objective: To examine key research topics, interrelations, and collaboration patterns of published health-related research in Scopus from Ugandan institutions and authors.
Methods: Using the search term "Uganda, health, medicine" in the title, abstract and keywords, documents published between 1963 and 2022 were retrieved from Scopus. The extracted records were analysed in terms of keywords analysis and collaboration networks. The R Bibliometrics package was used to analyse and visualise the data.
Results: The results reveal to scholars and practitioners the most relevant authors, affiliations, publication sources, trends in research topics and collaborating countries. The results provide valuable information for more investigation into the revealed research trends.
Conclusion: Bibliometric analysis of health research in Uganda revealed that the most frequent topics are medicinal plants, traditional medicine and herbal medicine. Research work on malaria, Covid-19 and HIV/AIDS is also evident. There is a significant research collaboration with authors from the United States and the United Kingdom.
Effect of Intramuscular Hyoscine-N-Butyl Bromide on Tubal Spasm and Pain Perception in Women with Infertility Undergoing Hysterosalpingography: A Randomised Controlled Trial
Authors: Oriji PC , Kiridi EK , Kiridi EGE , Ubom AE , Ugwoegbu JU , Bosrotsi P , Abasi IJ
Published: September 2022

Background: A tubal patency test is essential in evaluating women with infertility. Hysterosalpingography (HSG) is the investigation of choice for assessing tubal patency.
Objective: To evaluate the effect of intramuscular hyoscine-N-butyl bromide on tubal spasms and pain perception during hysterosalpingography.
Methods: This randomized, controlled trial was conducted at the Radiology Departments and Infertility Clinics of four health institutions in Bayelsa State, Nigeria, between January 2021 and April 2022. Five hundred and twenty infertile women undergoing hysterosalpingography were randomized into two groups. Women in group I (control) received a placebo, while women in Group II (experimental) received 20 mg of intramuscular hyoscine-N-butyl bromide. Pain scores at different steps of the procedure were recorded.
Results: The overall mean pain scores progressively decreased from contrast instillation (4.97 ± 2.08) through 30-minutes post-procedure (3.54 ± 1.54) to 24 hours post-procedure (1.96 ± 1.78). Pain scores at contrast instillation, 30 minutes and 24 hours after HSG were significantly lower in the hyoscine group compared to the placebo group (p = 0.001 each). There were significantly fewer women with tubal blockage in the hyoscine group compared to the placebo group [78 (30.0%) vs 131 (50.4%); p = 0.001].
Conclusion: Intramuscular hyoscine-N-butyl bromide before hysterosalpingography significantly reduces pain and tubal spasm during the procedure.
Autoamputation of the Breast in Invasive Ductal Carcinoma: A Case Report
Authors: Olusola-Bello MA , Olatunji AA , Ayoade BA , Adekoya AO , Ogunlade SB
Published: September 2022

Autoamputation is the spontaneous detachment from the body and elimination of an appendage or abnormal growth. Autoamputation of an organ due to malignancy has been reported in various organs, although its aetiopathogenesis has not been fully explained. Autoamputation of the breast is associated with late presentation and slow desmoplastic reaction in breast cancer. The patient was a 43- year- old Nigerian woman who presented with a one-year history of left breast mass diagnosed as triple negative invasive ductal carcinoma. She defaulted from hospital care but represented after autoamputation of the left breast. The case is reported to showcase the variations in the clinical course of breast cancers.