Results 101 to 110 of about 1,361,762 (335)

Phenolic composition, antibacterial and antioxidant activities of brazilian red propolis [PDF]

, 2009
Propolis is a resinous hive product collected by honeybees from various plant sources. It has a complex chemical composition, constituted by various phenolic compounds.
ALENCAR, Severino Matias de, BEZERRA, Rosângela Maria Neves, CABRAL, Ingridy Simone Ribeiro, IKEGAKI, Masaharu, OLDONI, Tatiane Luiza Cadorin, PRADO, Adna, ROSALEN, Pedro Luiz   +6 more
core   +2 more sources

Advances in Micro/Nanofiber‐Based Porous Materials for High‐Performance Thermal Insulation

Advanced Functional Materials, EarlyView.
Micro/nanofiber porous materials have engendered great interest in the thermal insulation field. Herein, the structural designs, fabrication techniques, and applications of the micro/nanofiber thermal insulation materials are systematically summarized.
Xiaobao Gong, Shuo Shi, Jing Yin, Rong Liu, Jianming Chen, Xungai Wang   +5 more
wiley   +1 more source

Next‐Generation Bio‐Reducible Lipids Enable Enhanced Vaccine Efficacy in Malaria and Primate Models

Advanced Functional Materials, EarlyView.
Structure–activity relationship (SAR) optimization of bio‐reducible ionizable lipids enables the development of highly effective lipid nanoparticle (LNP) mRNA vaccines. Lead LNPs show superior tolerability and antibody responses in rodents and primates, outperforming approved COVID‐19 vaccine lipids.
Ruben De Coen, Sabah Kasmi, Shrinivas Dumbre, Lies Baekens, Elise Seynaeve, Louise Van den Hauwe, Niccolò Cantini, Aello Garantoudi, Filipe Branco Madeira, Alain Marrot, Emma Tuypens, Sofie Seghers, Anna Kuchmiy, Elisabeth Brabants, Bart Vanderborght, Ine Maes, Sarah Vandenberghe, Jessica Filtjens, Alícia Gordún Peiró, Daliya Kancheva, Ayla Debraekeleer, Florence Lambolez, Emily De Lombaerde, Yong Chen, Rafael Miyazawa Martins, Pauline Formaglio, Damya Laoui, Sofie Deschoemaeker, Bruno G. De Geest, Rogerio Amino, Stefaan De Koker   +30 more
wiley   +1 more source

Tensile properties of in-situ precipitated polydimethylsiloxane networks

eXPRESS Polymer Letters, 2013
Tensile propertiesof polydimethylsiloxane (PDMS) networks filled with in-situ precipitated silica were investigated. Experimental results showed that increasing the swelling time of cured rubber sheets in tetraethoxysilane (TEOS) solution or elevating ...
Z. Zhang, Y-L. Yue, C. Zhang, H. Zhang, D-H. Zhang, X. Chen, Y-F. Chen   +6 more
doaj   +1 more source

S'obté un catalitzador reciclable [PDF]

, 2013
Investigadors del Departament de Química de la UAB han desenvolupat un catalitzador de ruteni suportat en gel de sílice que és reciclable en reaccions de metàtesi d'alquens.
Monge-Marcet, Amàlia, Pleixats i Rovira, Roser, Universitat Autònoma de Barcelona. Àrea de Comunicació i Promoció   +2 more
core   +1 more source

Synthesis of silica nanoparticles from Vietnamese rice husk by sol–gel method

Nanoscale Research Letters, 2013
Silica powder at nanoscale was obtained by heat treatment of Vietnamese rice husk following the sol–gel method. The rice husk ash (RHA) is synthesized using rice husk which was thermally treated at optimal condition at 600°C for 4 h.
V. H. Le, C. H. Thuc, H. H. Thuc
semanticscholar   +1 more source

3D Printing of Functional Mesoporous Silica Monoliths with Embedded Metal and MOF Components

Advanced Functional Materials, EarlyView.
This article presents the development of silica nanocage‐based nano‐inks tailored for digital light processing 3D printing, enabling automated additive manufacturing of mesoporous monoliths. Novel strategies for incorporating metal sites and inducing in situ growth of metal‐organic frameworks are introduced.
Thomas Gaillard, Arianna Bertero, Christine Joly‐Duhamel, Christine Biolley, Bartolomeo Coppola, Nicolas Brun, Anne Galarneau, Tangi Aubert   +7 more
wiley   +1 more source

Minimizing heterogeneity of sugarcane bagasse ash by silica extraction via sol gel process

Next Materials
This work proposes to extract silica via the sol-gel process using molecular precursors from four distinct sugarcane bagasse ashes. The process comprised cleaning, silica extraction using sodium silicate, and gel formation by lowering the solution pH ...
Samantha Coelho Pinheiro, Otávio Augusto Paiva, Romildo Dias Toledo Filho, Guilherme Chagas Cordeiro   +3 more
doaj   +1 more source

Estudio de la fracción insaponificable obtenida del aceite extraído de la semilla de la luffa cylindrica [PDF]

, 2008
Se obtuvo y caracterizo la materia insaponificable del aceite de las semillas de la Luffa Cylindrica procedentes de Risaralda suministrada por la empresa ESTROCOL. La materia prima se sometio a un proceso de secado para la posterior extraccion del aceite
Arcila González, Luis F., Fernández Tenorio, Juliana   +1 more
core  

Synthesis of 1-indanones through the intramolecular Friedel-Crafts acylation reaction using NbCl5 as Lewis acid [PDF]

, 2008
The intramolecular Friedel-Crafts acylation reaction of 3-arylpropanoic acids to give 1-indanones can be effected in good yields under mild conditions (room temperature) by using niobium pentachloride. Our results indicate that NbCl5 acts both as reagent
CONSTANTINO, Mauricio Gomes, POLO, Ellen Christine, SILVA, Gil Valdo José da, SILVA-FILHO, Luiz Carlos da   +3 more
core   +2 more sources