Stability Safety Factor
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Analysis of the impacts of slope angle variation on slope stability and NPV via two different final pit definition techniques
Abstract The traditionally and widely used Lerchs-Grossmann algorithm presents well-known limitations that newer propositions attempt to overcome. The direct block schedule (DBS) methodology, which has gained relevance with computational advances, obtains the final pit as a natural result of production sequencing, different from Lerchs-Grossmann-based algori
REM, Int. Eng. J.. Publicado em: 2020-03
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2. SOIL COMPACTION AND THE STABILITY OF LEVEES OF AQUACULTURE PONDS
ABSTRACT The aim of this work was to evaluate the effects of variations in soil compaction on the stability of the slope embankments of fish farms used in aquaculture. Computational modeling was performed using the RocScience Slide 6.0 program, simulating filling scenarios, fast lowering and stationary regimes for the full operation of the fish farms. The da
Eng. Agríc.. Publicado em: 04/11/2019
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3. Assessment of the effects of vegetational cover on the long-term stabilityof a waste rock dump
Abstract Waste rock dump reclamation includes re-grading the banks to flatten the overall slope followed by re-vegetation. These measures are required to reduce surface erosion, provide physical stability, and meet future use goals. In some cases, the presence of trees can cause localized shear zones in a waste rock dump by the load of the tree mass and the
REM, Int. Eng. J.. Publicado em: 16/09/2019
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4. MECHANICAL STABILITY OF THE Cabralea canjerana SAPLINGS SUBMITED TO LIBERATION IN SECONDARY FOREST, RS, BRAZIL
RESUMO A liberação de árvores de interesse por meio do corte de árvores competidoras, videiras lenhosas e outras lianas é uma prática silvicultural muito importante ao manejo florestal de espécies de interesse comercial presentes em florestas secundárias. Diante disso, nós objetivamos conhecer a influência na estabilidade mecânica e qual o limite
Rev. Árvore. Publicado em: 13/06/2019
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5. Nutritional value changes in response to temperature, microalgae mono and mixed cultures
Resumo Objetivo Avaliar o desenvolvimento de Pseudopediastrum boryanum (Turpin) E. Hegewald e Scenedesmus obliquus (Turpin) Kützing em cultivos unialgais e mistos, em três diferentes temperaturas, 20, 30 e 40 °C, em escala laboratorial, em termos de biomassa e composição bioquímica. Métodos O cultivo foi do tipo batelada, em meio ASM1. A densidade c
Acta Limnol. Bras.. Publicado em: 03/06/2019
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6. Development of sunscreen products containing passion fruit seed extract
Abstract Application of sunscreen is the most established method of protecting skin from premature aging and photoaging. In this study, the passion fruit seed extract, enriched with biologically beneficial phenolics, was formulated into sun-protective makeup product. The UVB protection of concealer mousse was found have twofold higher sun protection factor (
Braz. J. Pharm. Sci.. Publicado em: 20/04/2017
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7. PERFORMANCE OF ANALYSIS METHODS OF SLOPE STABILITY FOR DIFFERENT GEOTECHNICAL CLASSES SOIL ON EARTH DAMS
ABSTRACT The aim of this study was to evaluate the performance of less accurate analysis methods of slope stability, in order to reduce the number of operations used by the most accurate methods available in the literature. The study evaluated four methods for calculating slope stability. Fellenius (FELLENIUS, 1936), Bishop (BISHOP, 1955), Simplified Bishop
Eng. Agríc.. Publicado em: 2016-12
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8. Thermal inactivation studies on toxic seeds from fruits of the Brazilian Central Plain
Abstract Seeds from endemic Brazilian fruits (Mangaba, Cagaita, Jatobá and Araticum), previously confirmed to be toxic using Artemia salina bioassay were exposed to different temperatures and heating times aiming to test inhibitory effects on toxicity, as a first approach to characterize and identify toxic compounds and their thermal stability. After treatm
Food Sci. Technol. Publicado em: 19/09/2016
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9. ESTIMATIVA DE VIDA ÚTIL DO PBX (plastic-bonded explosive) COM ENVELHECIMENTO ACELERADO
This article aims to estimate the shelf life of the PBX by thermal analysis estimated by the Arrhenius equation, equivalent to the time of storage at accelerated aging. The PBX was subjected to accelerated aging in an oven at controlled temperature 60 ºC for periods of 5, 10, 15 and 25 weeks, which are equivalent to 5, 10, 15 and 25 of natural aging, respec
Quím. Nova. Publicado em: 2016-07
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10. Sulfites in beer: reviewing regulation, analysis and role
ABSTRACT Beer is an extremely complex mixture of more than 3,000 different compounds in an aqueous environment. Thus, it is perhaps not surprising that the maintenance of beer quality throughout its lifetime has been a considerable challenge for brewers. Whilst it is inevitable that chemical changes will occur in beer with the passage of time, it is the form
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04
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11. PROTETORES SOLARES À BASE DE FILTROS INORGÂNICOS: DESENVOLVIMENTO E CARACTERIZAÇÃO
The inorganic sunscreens represented mainly by titanium dioxide (TiO2) and Zinc Oxide (ZnO), were classified as inert particles, therefore, they are pointed out as the best way to protect the skin against the harmful effects of ultraviolet radiation (UV). However, recent studies suggest that these particles have several stability problems that may lead to a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/01/2012
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12. Busca da superfície de ruptura crítica na análise tridimensional de estabilidade de taludes / Search critical failure surface in three-dimensional analysis of slope stability
O principal objetivo deste trabalho é desenvolver, implementar e avaliar um método de busca de superfícies de ruptura tridimensionais a fim de determinar a superfície crítica, correspondente ao menor fator de segurança do talude. São também objetivos deste trabalho avaliar a influência dos parâmetros de resistência e elásticos e da geometria do t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2010