La historia de México es un documento que proporciona información sobre organizadores gráficos. El documento incluye la dirección de Luis Enrique Pacheco Varela #27 en la 3a calle.
New lessons on building the consumer products brand experience. For CP companies, time, technology, changing consumer lifestyles, as well as disruptive competitors, are creating new opportunities beyond the traditional.
New lessons on building the consumer products brand experience. For CP companies, time, technology, changing consumer lifestyles, as well as disruptive competitors, are creating new opportunities beyond the traditional.
Synthesis of geopolymer from indonesian kaolin and fly ash as a green constru...Pambudi Pajar Pratama
The cement industry is a substantial contributor to the global greenhouse gases emissions, accounting for approximatley 6% of the total global CO2 emission. Geopolymer, an inorganic polymer consisting primarily of Si-Al-O covalent chains, is an attractive alternative to the conventional portland cement due to its much smaller carbon footprint. This research is an early work aimed at elucidating the techno-economic feasibility of geopolymer production in Indonesia, utilizing domestic aluminosilicate minerals and waste materials as feedstocks. Kaolin from the Belitung island and Class F coal fly ash from an electric powerplant in East Java were selected as the geopolymer precursors. The kaolin was initially calcined at 750 oC for 6 hours to convert it to the much more reactive metakaolin phase. Besides the type of aluminosilicate raw materials, the type of alkali solution was also varied between NaOH and KOH. The aluminosilicate materials were each reacted with 10.0 M alkali hydroxide solution at a solid-to-liquid mass ratio of 1.2 and 2.8 for the case of metakaolin and fly ash, respectively. The effect of these variables was evaluated on mortars prepared by using the obtained geopolymers, which involved the measurement of settling time in accordance to an Indonesian standard Vicat apparatus method, and compressive strength according to the ASTM C 109-80 method. The setting time of fly ash - KOH/NaOH geopolymer mortars is shorter than those obtained using metakaolin, due to the higher reactivity of the amorphous fly ash. The higher reactivity of fly ash also promotes better crosslinking of the Si-Al-O bonds, resulting in a higher compressive strength compared to the metakaolin-based geopolymer samples.
Froth Flotation_1 presentation includes flotation fundamentals, performance calculation, hydrophobicity or hydrophilicity, and also particle or bubble contact. Next, Front Flotation_2 will brightly discuss about collection in the froth layer, reagents and flotation's equipment.
The balance between milling cost and metal losses is crucial, particularly with low-grade ores.
Most mills keep detailed accounts of operating and maintenance costs, broken down into various sub-division, such as labor, supplies, energy, etc. for the various areas of the plant.
Route: Primary Route uses Blast Furnace / Basic Oxygen Furnace for steel making, which is a traditional route of steel making. Iron Ore and Coke is main raw material in this process, leading to high Carbon emission in environment. While on the other side Secondary route uses Electric Arc Furnace / Induction furnace for steel making and uses Scrap, Pig Iron and Sponge Iron (HBI /DRI) as key raw materials. Steel produced by Primary route accounted for around 70% of global production and the rest through Secondary route, however after realizing the environmental impact and stringent guidelines laid by Kyoto protocol question arises of “How To Lower Iron and Steel making Carbon Emission”.
Synthesis of geopolymer from indonesian kaolin and fly ash as a green constru...Pambudi Pajar Pratama
The cement industry is a substantial contributor to the global greenhouse gases emissions, accounting for approximatley 6% of the total global CO2 emission. Geopolymer, an inorganic polymer consisting primarily of Si-Al-O covalent chains, is an attractive alternative to the conventional portland cement due to its much smaller carbon footprint. This research is an early work aimed at elucidating the techno-economic feasibility of geopolymer production in Indonesia, utilizing domestic aluminosilicate minerals and waste materials as feedstocks. Kaolin from the Belitung island and Class F coal fly ash from an electric powerplant in East Java were selected as the geopolymer precursors. The kaolin was initially calcined at 750 oC for 6 hours to convert it to the much more reactive metakaolin phase. Besides the type of aluminosilicate raw materials, the type of alkali solution was also varied between NaOH and KOH. The aluminosilicate materials were each reacted with 10.0 M alkali hydroxide solution at a solid-to-liquid mass ratio of 1.2 and 2.8 for the case of metakaolin and fly ash, respectively. The effect of these variables was evaluated on mortars prepared by using the obtained geopolymers, which involved the measurement of settling time in accordance to an Indonesian standard Vicat apparatus method, and compressive strength according to the ASTM C 109-80 method. The setting time of fly ash - KOH/NaOH geopolymer mortars is shorter than those obtained using metakaolin, due to the higher reactivity of the amorphous fly ash. The higher reactivity of fly ash also promotes better crosslinking of the Si-Al-O bonds, resulting in a higher compressive strength compared to the metakaolin-based geopolymer samples.
Froth Flotation_1 presentation includes flotation fundamentals, performance calculation, hydrophobicity or hydrophilicity, and also particle or bubble contact. Next, Front Flotation_2 will brightly discuss about collection in the froth layer, reagents and flotation's equipment.
The balance between milling cost and metal losses is crucial, particularly with low-grade ores.
Most mills keep detailed accounts of operating and maintenance costs, broken down into various sub-division, such as labor, supplies, energy, etc. for the various areas of the plant.
Route: Primary Route uses Blast Furnace / Basic Oxygen Furnace for steel making, which is a traditional route of steel making. Iron Ore and Coke is main raw material in this process, leading to high Carbon emission in environment. While on the other side Secondary route uses Electric Arc Furnace / Induction furnace for steel making and uses Scrap, Pig Iron and Sponge Iron (HBI /DRI) as key raw materials. Steel produced by Primary route accounted for around 70% of global production and the rest through Secondary route, however after realizing the environmental impact and stringent guidelines laid by Kyoto protocol question arises of “How To Lower Iron and Steel making Carbon Emission”.
Obra plástica de la exposición de esculturas exentas “Es-cultura. Espacio construido de reflexión”, en la que me planteo la interrelación entre escultura y cultura y el hecho de que la escultura, como yo la creo, sea un espacio construido de reflexión. Ver los documentos: vídeo de presentación, texto de catálogo, fichas técnicas y títulos en inglés, alemán y español en:
Consultar página web: http://luisjferreira.es/
Texto del catálogo de la exposición de esculturas exentas “Es-cultura. Espacio construido de reflexión”, en la que me planteo la interrelación entre escultura y cultura y el hecho de que la escultura, como yo la creo, sea un espacio construido de reflexión. Ver los documentos: vídeo de presentación, imágenes de las obras, fichas técnicas y títulos en inglés, alemán y español en:
Consultar página web: http://luisjferreira.es/
Portafolio final comunicación y expresión ll - ivan alarcon .pptxivandavidalarconcata
Los muros paramétricos son una herramienta poderosa en el diseño arquitectónico que ofrece diversas ventajas, tanto en el proceso creativo como en la ejecución del proyecto.