Expansion
Mostrando 1-12 de 5093 artigos, teses e dissertações.
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1. Technological properties of a self-bloating clay and expanded-clay aggregate for the production of lightweight concrete
Abstract The global interest in an increasingly sustainable economy, with a reduction in the consumption of raw materials and energy, can be supported by the growth in the use of lightweight concrete (LC) produced with expanded-clay aggregates (EA). The main qualities of natural self-bloating clay for the production of EA were studied, analyzing the paramete
Cerâmica. Publicado em: 2023
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2. The influence of compositional variability of dimension stone residues on the properties of rustic porous ceramic tiles
Abstract This study analyzed how the compositional variability of dimension stone residues influences the characteristics of rustic porous ceramic tiles. The specimens were prepared by adding 20 wt% of dimension stone residue to the clay and sintered at 1000 °C for 1 h. The testing assays performed were physical properties and structural analysis through sc
Cerâmica. Publicado em: 2023
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3. Sensitivity analysis of the AquaCrop model for wheat crop in Campos Gerais region, Paraná
ABSTRACT The use of crop modeling can be useful to understand the interactions between the soil-plant-atmosphere system. The objective of this study was to evaluate sensitivity analysis of the AquaCrop model parameters for wheat crop in the Campos Gerais Region. The varietie tested was TBIO Sinuelo in Castro, Ponta Grossa and Itaberá cities. The analyzed pa
Revista Ceres. Publicado em: 2023
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4. A clinical trial on 3D CT scan and polysomnographyc changes after rapid maxillary expansion in children with snoring
Abstract Objective: The present prospective clinical study aimed to investigate the effects of rapid maxillary expansion on the airway, correlating airway volumes obtained on multi-slice computed tomography and polysomnography assessment of oxygen saturation and apnea/hypopnea index. Methods: Twenty-four patients (11 with obstructive sleep apnea and 13 wit
Brazilian Journal of Otorhinolaryngology. Publicado em: 2022
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5. Conocimiento y poder: el papel de la astronomía en la expansión territorial de Chile, 1883-1890
Resumen El artículo analiza el rol que jugó el Observatorio Astronómico Nacional en la expansión territorial de Chile a fines del siglo XIX, a través de la relación que sostuvo con tres exploraciones geográficas asociadas a este proceso. Se propone que el Observatorio cumplió un papel central para estas exploraciones geográficas, ayudando a obtener
História, Ciências, Saúde-Manguinhos. Publicado em: 2022
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6. Three-dimensional image study of accelerated maxillary expansion in oral breathing kids
Abstract Objective: To evaluate, by a three-dimensional study, the volumetric and integumentary effects of rapid maxillary expansion on the nose, in mouth breathing kids with maxillary hypoplasia, in the short term, assessing the possible interference of gender, growth and age on the results achieved. Methods: 120 mouth breathing patients with maxilla hypo
Brazilian Journal of Otorhinolaryngology. Publicado em: 2022
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7. Expansion of cord blood stem cells in fibronectin-coated microfluidic bioreactor
ABSTRACT Background: Hematopoietic stem/progenitor cell transplantation is the main treatment option for hematological malignancies and disorders. One strategy to solve the problem of low stem cell doses used in transplantation is pre-transplant expansion. We hypothesized that using fibronectin-coated microfluidic channels would expand HSPCs and keep self-r
Hematology, Transfusion and Cell Therapy. Publicado em: 2022
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8. Evaluation of different protocols for culturing mesenchymal stem cells derived from murine bone marrow
ABSTRACT Introduction: Culturing bone marrow mesenchymal stem cells (BM-MSCs) is a key point in different fields of research, including tissue engineering and regenerative medicine and studies of the bone marrow microenvironment. However, isolating and expanding murine BM-MSCs in vitro has challenged researchers due to the low purity and yield of obtained c
Hematology, Transfusion and Cell Therapy. Publicado em: 2022
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9. Properties and technical characteristics of Casira pottery, Jujuy, Argentina
Abstract In this work, the results of a multi-technique characterization of a type of pottery production with high cultural and economic relevance from the only potter town in Argentina are presented and correlated. Raw materials, a prepared paste, and ceramic samples were studied. Chemical, structural, textural, microstructural, and thermal features were as
Cerâmica. Publicado em: 2022
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10. Casting the net: early Atlantic fisheries and colonial expansion, 15-16th centuries
Resumo: Este artigo explora o papel desempenhado pela pesca comercial oceânica na expansão europeia na bacia atlântica ao longo dos séculos XV-XVI. Utiliza os exemplos da Islândia, Rio do Ouro e Terra Nova como representativos das novas operações de pesca, e explica como eles funcionaram como sistemas de exploração de recursos. Argumenta que essas p
Tempo. Publicado em: 2022
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11. Territorial expansion of Zenaida auriculata (Aves: Columbidae) in the Brazilian Amazon
RESUMO As aves são consideradas bioindicadores de qualidade ambiental por serem sensíveis às mudanças ambientais. A avoante (Zenaida auriculata) é associada a áreas abertas, possui baixa sensibilidade às mudanças ambientais e é amplamente distribuída no Brasil, apesar de não ser tipicamente encontrada na Amazônia. Nós analisamos a expansão biog
Acta Amazonica. Publicado em: 2022
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12. Conexidad prospectiva: del estado de cosas inconstitucional a los ecosistemas como sujetos de derecho - aportes desde la experiencia colombiana
Resumen En los últimos años, la protección al medio ambiente en la experiencia colombiana se ha profundizado, transformando la interpretación del derecho al ambiente sano como un derecho colectivo, para construir una narrativa en torno a la personalidad jurídica de la naturaleza y el derecho humano a la pervivencia, como un ejercicio prospectivo que par
Revista de Investigações Constitucionais. Publicado em: 2022