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Viscosity model for fully liquid silicate melt
Published 2012-01-01“…A model for estimating the viscosity of silicate melt as derived in our previous paper is extended to the system containing MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, which can express the nonlinear variation of activation energy of viscosity with the composition. …”
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3223
BẤT ĐẲNG THỨC LOJASIEWICZ CHO CÁC HÀM ĐỊNH NGHĨA ĐƯỢC TRONG CẤU TRÚC O-TỐI TIỂU TRÊN TRƯỜNG THỰC ĐÓNG
Published 2014-09-01“…., Vol. 18, No. 2, (2007), 556-572.], bài báo cáo này đưa ra một số kết quả về bất đẳng thức Lojasiewicz cho các hàm định nghĩa đươc trong cấu trúc o-tối tiểu trên trường thực đóng R. …”
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3224
CAMELLIA QUYNHII (THEACEAE, SECT. STEREOCARPUS), A NEW YELLOW SPECIES FROM THE CENTRAL HIGHLANDS, VIETNAM
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3225
CHIẾN THẮNG ĐƯỜNG 14, PHƯỚC LONG – CHÌA KHÓA MỞ RA ĐẠI THẮNG MÙA XUÂN 1975
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3226
Crise do capitalismo e a questão social: constribuições ao debate
Published 2022-02-01“… No artigo, as reflexões sobre a crise do capitalismo e a ques- tão social articulam elementos da relação de exploração da força de trabalho pelo capital, com ênfase no contexto sócio-histórico mundial da crise do capitalismo, após 1970, no neoliberalismo e a reestrutura- ção produtiva, a pós-modernidade e neoconservadorismo. …”
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3227
Determination of the Sediment Carrying Capacity Based on Perturbed Theory
Published 2014-01-01“…After that, the new formula was verified through measuring data of natural rivers and flume tests and comparing the verified results calculated by Cao Formula, Zhang Formula, Li Formula, Engelung-Hansen Formula, Ackers-White Formula, and Yang Formula. …”
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3228
Application of Nuclear Analytical Techniques in Elemental Characterization of Wadi El-Nakhil Alabaster, Central Eastern Desert, Egypt
Published 2016-01-01“…The chemical analysis of alabaster indicated having high contents of CaO and MgO and LOI and low contents of SiO2, Al2O3, Na2O, K2O, MnO, and Fe2O3.…”
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3229
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Chemical, Mineralogical, and Morphological Properties of Steel Slag
Published 2011-01-01“…The XRD analyses indicated the presence of free MgO and CaO in both the BOF and EAF(L) slag samples. SEM micrographs showed that the majority of the sand-size steel slag particles had subangular to angular shapes. …”
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3231
Effects of Additives and Sintering Time on the Microstructure of Ni-Zn Ferrite and Its Electrical and Magnetic Properties
Published 2014-01-01“…This work aims to investigate the relationship between the microstructure of Ni-Zn ferrite and its electrical and magnetic properties in the presence and absence of as small amounts as 0.12% of 0.4CaO + 0.8SiO2 over different sintering times. The X-ray diffraction pattern showed a single spinel phase formation in all the samples. …”
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3232
The possibility of using high-quality fused magnesia in the manufacture of crucibles for vacuum-induction melting
Published 2019-10-01“…The physical and mechanical characteristics of the obtained products are given. The effect of the CaO/SiO2 ratio on the corrosion and erosion resistance of products is considered. …”
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The Effect of Synthetic Hydrated Calcium Aluminate Additive on the Hydration Properties of OPC
Published 2016-01-01“…The effect of synthetic CAH (130°C; 8 h; CaO/(SiO2 + Al2O3) = 0.55; Al2O3/(SiO2 + Al2O3) = 0.1, 0.15) with different crystallinity on the hydration kinetics of OPC at early stages of hydration was investigated. …”
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3234
Cumulative damage characteristics of tunnel initial support concrete under blasting load
Published 2025-01-01“…Abstract Relying on the Beijing-Zhangjiakou high-speed railway Cao Mao Shan tunnel project, blasting vibration monitoring and sound wave testing experiments were carried out. …”
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3235
Gold recovery from flotation concentrate from gold mine tailings using dissolve smelting
Published 2019-01-01“…Gold greatly dissolved at 1600°С under a CaO/SiO2 ratio of 1.25, suggesting the increase in the dissolution of gold into molten copper with decreasing viscosity of the molten slag-like concentrate at high temperatures.…”
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3236
Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
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3237
Reduction kinetics of lead-rich slag with carbon in the temperature range of 1073 to 1473K
Published 2013-01-01“…The difference of the activation energy between industrial sinter and synthetic slag can be explained by the difference in their CaO/SiO2 ratios.…”
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3238
A Review of Coal Fly Ash Utilization: Environmental, Energy, and Material Assessment
Published 2024-12-01“…Fly ash also includes Fe<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>, MgO, K<sub>2</sub>O, and CaO. This article describes various methods of using fly ash. …”
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3239
O ensino de matemática e o tratamento das informações na educação de jovens e adultos
Published 2011-06-01“… Este relato apresenta reflexões e atividades relacionadas ao ensino da matemática em classes de educa- ção de jovens e adultos (EJA). Partimos de considerações sobre a prática docente articulada à necessida- de de conhecer quem são os sujeitos. …”
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Acute Coronary Artery Occlusion during Transcatheter Aortic Valve Replacement in a Patient with an Anomalous Left Circumflex Coronary Artery
Published 2022-01-01“…Acute coronary artery occlusion (CAO) during transcatheter aortic valve replacement (TAVR) is a rare but life-threatening complication during the procedure; there were a few case reports about an anomalous LCX during perioperative period. …”
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