Results 91 to 100 of about 42,763 (313)

Formation of Stable Amorphous Calcium Phosphate and Collagen Assemblies by a Versatile Spray‐Drying Approach

Advanced Functional Materials, EarlyView.
Amorphous calcium phosphate (ACP) microparticles with long‐term and thermal stability are prepared with or without collagen using a scalable one‐pot spray‐drying process. Under simulated physiological conditions, they crystallize into biomimetic bone mineral and, when combined with collagen, form extrudable, fibrillar bone‐like 3D constructs.
Camila Bussola Tovani, Nessma Bennaceur, Celina Benkhellat, Tristan Georges, Clara Doisneau, Vaskar Sardhalia, Thierry Azaïs, Flora Lemaire, Halima Kerdjoudj, Mohamed Selmane, Capucine Sassoye, Marie Albéric, Cédric Boissière, Nadine Nassif   +13 more
wiley   +1 more source

Fracionamento químico da matéria orgânica e características de ácidos húmicos de solos com horizonte a antrópico da amazônia (Terra Preta) Chemical fractionation of organic matter and humic acid characteristic in anthropogenic dark earth soils of brazilian amazonic region

Acta Amazonica, 2007
Os solos da Amazônia que possuem horizonte A antrópico (Au) apresentam elevada fertilidade natural geralmente atribuída ao teor elevado de matéria orgânica e à sua elevada reatividade.
Tony Jarbas Ferreira Cunha, Beata Emoke Madari, Vinicius de Melo Benites, Luciano Pasqualoto Canellas, Etelvino Henrique Novotny, Rondinele de Oliveira Moutta, Patrick Marques Trompowsky, Gabriel de Araújo Santos   +7 more
doaj   +1 more source

BaFe12O19 single-particle-chain nanofibers : preparation, characterization, formation principle, and magnetization reversal mechanism [PDF]

, 2012
BaFe12O19 single-particle-chain nanofibers have been successfully prepared by an electrospinning method and calcination process, and their morphology, chemistry, and crystal structure have been characterized at the nanoscale.
Aharoni A., Arruebo M., Cheon J., Desheng Xue, Ederer C., Erqing Xie, Fashen Li, Fu L., Gregg J. F., Guan J. G., Halder A., Han X. J., Hu G., Huang J. G., Huang Y., Jalli J., Jiecai Fu, Junli Zhang, Kojima H., Lee S. B., Li D., Lu Y. F., Miyawaki J., Nakamura H., Nigel J. Mellors, Parkin S. S. P., Pinto N. J., Qiu J., Reneker D. H., Skomski R., Steier H. P., Suh J. S., Tsukahara Y., Tsung-Shune C., Uher J., Vacanti J. P., Xia Y. N., Yong Peng, Yu H. F., Zhang Z. J., Zhong W., Zhong W. D.   +41 more
core   +1 more source

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

Advanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon, Raúl López‐Martín, Verner Håkonsen, Nader Yaacoub, Francisco J. Terán, Alberto López Ortega, Jose A. De Toro, Gurvinder Singh   +7 more
wiley   +1 more source

Modelling a new, low CO2 emissions, hydrogen steelmaking process

, 2013
In an effort to develop breakthrough technologies that enable drastic reduction in CO2 emissions from steel industry (ULCOS project), the reduction of iron ore by pure hydrogen in a direct reduction shaft furnace was investigated.
Da Costa, Andrea Ranzani, Patisson, Fabrice, Wagner, D.   +2 more
core   +3 more sources

Thermal behavior and structural study of SiO2/Poly(ε-caprolactone) hybrids synthesized via sol-gel method [PDF]

, 2018
SiO2-based organic-inorganic hybrids (OIHs) are versatile materials whose properties may change significantly because of their thermal treatment. In fact, after their preparation at low temperature by the sol-gel method, they still have reactive silanol ...
Bollino, Flavia, Ciprioti, Stefano Vecchio, Dal Poggetto, Francesco, Dell'Era, Alessandro, Tuffi, Riccardo   +4 more
core   +1 more source

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

Advanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra, Eleonora Ornati, Robert Lehn, Joanna J. Mikolei, Hergen Breitzke, Raheleh Pardehkhorram, Gerd Buntkowsky, Nico Bruns, Annette Andrieu‐Brunsen   +8 more
wiley   +1 more source

Multi-Sample Thermobalance for Rapid Cyclic Oxidation Under Controlled Atmosphere [PDF]

, 2004
When testing the resistance to oxidation of high temperature materials, the cyclic oxidation test is used as a reference because it integrates isothermal oxidation kinetics, oxide scale adherence, mechanical stresses, metallic alloy and oxide mechanical ...
Monceau, Daniel, Salabura, Jean-Claude
core   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

Advanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono, Anna Puiggalí‐Jou, Greta Cocchi, Mariangela Miccoli, Katharina Maniura‐Weber, Marcy Zenobi‐Wong, Esther Amstad   +6 more
wiley   +1 more source

Estimativa da entalpia reticular (Dm Hmº) de adutos através de termogravimetria: uso de uma equação empírica Lattice enthalpies (DMHmº) of adducts using an empirical equation supported in tg data

Química Nova, 1997
An empirical equation: DMHmº = t i/b (where t i is the Kelvin temperature of the beginning of the thermal decomposition obtained from the thermogravimetry of the adducts; b is an empirical parameter wich depends on the metal halide and on the number of ...
Robson Fernandes de Farias
doaj   +1 more source