Results 141 to 150 of about 1,539,435 (245)
La transición energética en costa rica y sus consecuencias, 1911-1929
Revista de Historia, 2006 En este artículo se determinan las causas y las consecuencias de la transición energética del carbón al petróleo en Costa Rica durante la Primera Guerra Mundial.
Frank Notten
doaj
Proportion of common wheat kernels in commercial samples of durum wheat by chemical methods
, 1970 Durum wheat (Triticum durum Desf.) is used for production of semolina which is the required raw material for the elaboration of good quality pasta products. Common wheat (T.
Carbonero Zalduegui, Pilar +1 more
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Advanced Engineering Materials, EarlyView.Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi +7 more
wiley +1 more source
Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena +2 more
wiley +1 more source
Detection and interpretation of cyclic patterns in coals from Los Cuervos Formation, Venezuela
Revista Técnica de la Facultad de IngenieríaSe colectó un total de 21 muestras de carbón pertenecientes a la Formación Los Cuervos en Villa Páez, estado Táchira, Venezuela, con la finalidad de establecer variaciones verticales en sus parámetros geoquímicos.
Manuel Martínez S +4 more
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Antonio Guiteras y su traducción de la Eneida [PDF]
, 1996 Carbón Sierra, Amaury B.
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Advanced Engineering Materials, EarlyView.The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert +6 more
wiley +1 more source
Felipe Poey, traductor de Pedro Mártyr de Anglería [PDF]
, 2001 Carbón Sierra, Amaury B.
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