Coarse Grain
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Dolomite-zirconia reaction sintered bonded coarse magnesia ceramics: effect of the bonding proportion
Abstract Refractory ceramic materials were manufactured, mainly composed of magnesia grains (coarse and medium fraction) and CaZrO3/MgO as a binding phase produced from the reaction sintering between CaMg(CO3)2 (dolomite) and m-ZrO2 (monoclinic zirconia), which constituted the finer fraction. Different relationships between the proportion and the size of the
Cerâmica. Publicado em: 2021-06
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2. Editorial Comment: Luts-V: A new simplified score for assessing lower urinary tract symptoms in men
Abstract Refractory ceramic materials were manufactured, mainly composed of magnesia grains (coarse and medium fraction) and CaZrO3/MgO as a binding phase produced from the reaction sintering between CaMg(CO3)2 (dolomite) and m-ZrO2 (monoclinic zirconia), which constituted the finer fraction. Different relationships between the proportion and the size of the
Int. braz j urol.. Publicado em: 2021-06
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3. Oxidative Stress & Male Infertility - A necessary and conflicted indissociable marriage: How and when to call for evaluation?
Abstract Refractory ceramic materials were manufactured, mainly composed of magnesia grains (coarse and medium fraction) and CaZrO3/MgO as a binding phase produced from the reaction sintering between CaMg(CO3)2 (dolomite) and m-ZrO2 (monoclinic zirconia), which constituted the finer fraction. Different relationships between the proportion and the size of the
Int. braz j urol.. Publicado em: 2021-06
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4. Editorial Comment: Vasectomy re-reversal: effectiveness and parameters associated with its success
Abstract Refractory ceramic materials were manufactured, mainly composed of magnesia grains (coarse and medium fraction) and CaZrO3/MgO as a binding phase produced from the reaction sintering between CaMg(CO3)2 (dolomite) and m-ZrO2 (monoclinic zirconia), which constituted the finer fraction. Different relationships between the proportion and the size of the
Int. braz j urol.. Publicado em: 2021-06
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5. Dysplasia of the fibrous sheath with axonemal and centriolar defects combined with lack of mitochondrial activity as associated factors of ICSI failure in primary ciliary dyskinesia syndrome
Abstract Refractory ceramic materials were manufactured, mainly composed of magnesia grains (coarse and medium fraction) and CaZrO3/MgO as a binding phase produced from the reaction sintering between CaMg(CO3)2 (dolomite) and m-ZrO2 (monoclinic zirconia), which constituted the finer fraction. Different relationships between the proportion and the size of the
Int. braz j urol.. Publicado em: 2021-06
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6. STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
ABSTRACT Knowledge regarding the static pressure drop in granular layers is of fundamental importance in the development of efficient drying and aeration projects of agricultural products. Thus, the objective of this study was to evaluate the effects of impurity contents on the static pressure drop in different bed depth of castor bean grains, as well as mod
Eng. Agríc.. Publicado em: 2020-04
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7. Effect of Ca Content on Properties of Extruded Mg-3Zn-0.5Sr-xCa Alloys for Medical Applications
Mg-3Zn-0.5Sr-xCa(wt.%) (x=0, 0.2, 0.5) alloys were fabricated by casting and hot extrusion. X-ray diffraction (XRD) and optical microscopy observation showed that the microstructure of Mg-3Zn-0.5Sr-xCa alloys was composed of α-Mg matrix and Mg17Sr2 phase precipitated along grain boundaries. The tensile strength of the alloy increased from 255MPa to 305MPa w
Mat. Res.. Publicado em: 30/09/2019
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8. Micromorphology and Genesis of Soils from Topolitosequences in the Brazilian Central Plateau
ABSTRACT The micromorphology of deeply weathered soils (Ferralsols/ Latossolos ) from the Central Plateau of Brazil remains little studied, and its affiliation to different parent materials, poorly known. To clarify the processes of soil formation of these acric, gibbsitic, Fe-oxide rich Ferralsols, three lithotoposequences on local ultrabasic to basic intru
Rev. Bras. Ciênc. Solo. Publicado em: 09/09/2019
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9. Behaviors of Embrittlement and Softening in Heat Affected Zone of High Strength X90 Pipeline Steels
Abstract The embrittlement and softening behaviors in heat affected zone of X90 pipeline steel were studied, and the influence of weld thermal cycle on microstructure and mechanical properties were discussed by combining the effect of peak temperature on the phase transition point (Ar3). Results show that there are embrittlement and softening zones existed i
Soldag. insp.. Publicado em: 15/08/2019
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10. A study of packing parameters that influence the fresh properties of self-compacting concrete
Resumo Alguns métodos de dosagem de concreto autoadensável (CAA) conhecidos são baseados no menor índice de vazios como uma proposta de empacotamento ideal. Contudo, uma composição com um menor teor de vazios não é garantia de uma boa sinergia entre os grãos maiores e menores no estado fresco. O objetivo deste estudo foi identificar e avaliar difere
Cerâmica. Publicado em: 15/08/2019
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11. Microstructure evolution during the extrusion of a 6351 aluminum alloy tube
Abstract The aluminum alloy AA 6351 is a precipitation hardened alloy of the Al-Mg-Si system, additionally containing Mn and Fe. In this study, the microstructural characterization during processing of a thick wall extruded AA 6351 tube was carried out. Several complementary techniques for microstructural characterization were used, such as polarized light o
REM, Int. Eng. J.. Publicado em: 19/06/2019
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12. Influência do Ciclo Térmico de Soldagem no Crescimento de Grão, nas Transformações Microestruturais e na Formação de MA na GGZAC de aço TMCP
Resumo A soldagem com elevado aporte térmico é uma das alternativas adotadas pelos estaleiros e fabricantes de torres eólicas para aumento da produtividade. No entanto, os ciclos térmicos gerados no processo podem provocar transformações microestruturais prejudiciais à tenacidade na zona afetada pelo calor, especialmente na região de grãos grosseiro
Soldag. insp.. Publicado em: 09/05/2019