Results 61 to 70 of about 693,650 (251)

Response surface optimization of biodiesel synthesis from crude palm oil (CPO) using CaO/silica gel heterogeneous catalyst based on blood cockle shell and coconut fiber

International Journal of Renewable Energy Development
This study successfully synthesized a hybrid catalyst CaO-silica gel from environmentally friendly raw materials, CaO derived from blood clam shells and silica gel obtained from coconut fiber waste ash.
Nurhayati Nurhayati, Amir Awaluddin, Yenni Mulyani   +2 more
doaj   +1 more source

Estudio de las variables de reacción en la síntesis de sílica gel adsorbente [PDF]

, 2007
En este artículo se presentan las condiciones de síntesis (temperatura de reacción, concentración de ácido sulfúrico y silicato de sodio) más adecuadas para la obtención de sílica gel adsorbente SGA, haciendo uso de materias primas elaboradas en Colombia.
María Carolina Sáenz, Gerardo Rodríguez Niño, Sáenz, María Carolina, Báez Quintero, Carlos Andrés, Díaz Velásquez, José de Jesús, Carlos Andrés Báez Quintero, Rodríguez Niño, Gerardo, José de Jesús Díaz Velásquez   +7 more
core  

Alterações fisiológicas e bioquímicas em sementes de café secas em sílica gel e soluções salinas saturadas. [PDF]

, 2015
O objetivo deste trabalho foi avaliar alterações fisiológicas e bioquímicas em sementes de café submetidas à secagem rápida, em sílica gel, e à secagem lenta, em soluções salinas saturadas.
FIGUEIREDO, M. A. de, ROSA, S. D. V. F. da, Madeleine Alves de Figueiredo, Luis Filipe Serafim Coelho, Stefania Vilas Boas Coelho, COELHO, L. F. S., Sttela Dellyzete Veiga Franco da Rosa, Aline da Consolação Sampaio Clemente, COELHO, S. V. B., CLEMENTE, A. da C. S.   +9 more
core   +1 more source

Hybrid Biofabrication of a Hierarchically Organized Periosteum‐Inspired In Vitro Platform

Advanced Healthcare Materials, EarlyView.
A hybrid biofabrication strategy integrates melt electrowriting with extrusion‐based 3D bioprinting to create a hierarchically organized periosteum‐inspired in vitro platform. Spatially defined osteogenic, fibrous, and endothelial cell‐containing compartments support long‐term culture, osteogenic maturation, and CD31+ endothelial cell organization ...
Yakui Liu, Xinggui Tian, Anne Bernhardt, Anja Lode, Max von Witzleben, Ege Kirbas, Stefan Zwingenberger, Michael Gelinsky   +7 more
wiley   +1 more source

Functionalization of Carbon and Silica Gel by Phosphoric Acid

Adsorption Science & Technology, 2007
Functionalization of polymer-based carbon (SCS-3) and silica gel (SG60) by phosphoric acid at 800°C was investigated. It was shown that heat treatment of carbon and silica gel in the presence of phosphoric acid at 800°C provides a way of functionalizing ...
A.M. Puziy, O.I. Poddubnaya, B. Gawdzik, M. Sobiesiak, M.M. Tsyba   +4 more
doaj   +1 more source

Quantitative analysis of phospholipids and phospholipid fatty acids from silica gel thin-layer chromatograms

Journal of Lipid Research, 1965
An improved procedure for the quantitative assay of phospholipids separated by TLC is described, in which a specially washed Silica Gel H and a newly designed chromatography unit are employed.Analysis of phospholipid phosphorus and phospholipid fatty ...
Frank Parker, Norman F. Peterson
doaj   +1 more source

Effect of Wood Fiber on the Strength of Calcareous Sand Rapidly Seeped by Colloidal Silica [PDF]

MATEC Web of Conferences, 2019
Silica nano-particles are suspended in the colloidal silica and can be induced to gradually gel after the PH value changes. Thus colloidal silica can be utilized to rapidly seep through loose calcareous sand, and the silicon gel is gradually formed to ...
Jin Weifeng, Chen Rongzhong, Wang Xin, Cheng Zehai   +3 more
doaj   +1 more source

Determinação de cádmio em tabaco por extração em fase sólida acoplado em linha ao espectrômetro de absorção atômica em chama [PDF]

, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Neste estudo foi determinado cádmio em amostras de cigarro utilizando a técnica de extração em fase sólida associada a um sistema para a ...
Rios, Fernanda de J. de Araújo
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Clustomesogen Showing Sub‐Zero Liquid Crystal Properties: Supramolecular Assembly Between Cs2[Mo6Ii8(OCOC2F5)6] and Hexaethylenoxide Containing Mesogenic Dimers

Advanced Materials, EarlyView.
Associating a red‐NIR phosphorescent octahedral hexanuclear molybdenum cluster compound with hexaethyleneoxide chains bearing mesogenic units on both ends leads to an emissive hybrid liquid crystal showing mesomorphism on a very unusual temperature range down to −25°C.
Killiann Heinz, Jeanne Rebours, Zoulikha Zerrouqi, Noée Dumait, Maria Amela‐Cortes, Nikolai Scheuring, Sara Simonovska, Sebastian Marino, Max Ebert, Stéphane Cordier, Sabine Laschat, Yann Molard   +11 more
wiley   +1 more source

Propriedades espectroscópicas de sílica contendo crômio [PDF]

, 1997
Sílica contendo crômio faz parte de uma classe importante de materiais devido às aplicações como catalisador de polimerização e de oxidação, fibras ópticas, laseres e preparação de pigmentos. Este trabalho está dividido em duas partes.
Martines, Marco Antonio Utrera
core   +2 more sources