Results 41 to 50 of about 44,217 (244)

Antioxidant Activity and Pyrolysis Properties of Lignin Extracted from Camellia oleifera Shell by Deep Eutectic Solvents (DES)

Shipin gongye ke-ji, 2022
In order to obtain lignin with low molecular weight and polydispersity, as well as high antioxidant activity, using Camellia oleifera shell as raw material, four lignin products were isolated from it by alkaline and deep eutectic solvents. The structural
Feng LI, Yiqing LI, Haili MAO, Dena HUANG, Chenglu ZENG   +4 more
doaj   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

Nanostructured systems containing an essential oil: protection against volatilization

Química Nova, 2011
The goal of this study was to evaluate the feasibility of preparing nanocapsules and nanoemulsions using tea tree oil as oily phase aiming to protect its volatilization. The nanostructures presented nanometric mean size (160-220 nm) with a polydispersity
Fernanda Cramer Flores, Roseane Fagundes Ribeiro, Aline Ferreira Ourique, Clarice Madalena Bueno Rolim, Cristiane de Bona da Silva, Adriana Raffin Pohlmann, Ruy Carlos Ruver Beck, Sílvia Stanisçuaski Guterres   +7 more
doaj   +1 more source

Dynamics of Polydisperse Polymer Mixtures

, 2002
We develop a general analysis of the diffusive dynamics of polydisperse polymers in the presence of chemical potential gradients, within the context of the tube model (with all species entangled).
Cates, M. E., Pagonabarraga, I.
core   +1 more source

Unleashing the Power of Machine Learning in Nanomedicine Formulation Development

Advanced Functional Materials, EarlyView.
A random forest machine learning model is able to make predictions on nanoparticle attributes of different nanomedicines (i.e. lipid nanoparticles, liposomes, or PLGA nanoparticles) based on microfluidic formulation parameters. Machine learning models are based on a database of nanoparticle formulations, and models are able to generate unique solutions
Thomas L. Moore, Cristiano Pesce, Antonietta Greco, Claudia Pisante, Greta Avancini, Valentina Di Francesco, Yosi Shamay, Paolo Decuzzi   +7 more
wiley   +1 more source

Reorientation kinetics of superparamagnetic nanostructured rods [PDF]

, 2008
The attractive interactions between oppositely charged species (colloids, macromolecules etc) dispersed in water are strong, and the direct mixing of solutions containing such species generally yields to a precipitation, or to a phase separation. We have
Berret, J. -F., Fresnais, J., Frka-Petesic, B., Perzynski, R., Sandre, O.   +4 more
core   +2 more sources

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

Total phenol, flavonoid, and anthocyanin content and antioxidant activity of Etlingera elatior extract and nanoparticle [PDF]

Pharmaciana, 2018
Despite the long and wide application, traditional medicine is known for its minimum efficacy. Nanoparticle technology has reported to optimally address this weakness by enhancing the ability of the medicine to penetrate the biological membrane and ...
Tresna Lestari, Tita Nofianti, Lilis Tuslinah, Ruswanto Ruswanto, Yulia Salmini, Dewi Dewi, Leli Siti Zaqiah, Anggi Agustira, Putri Pratiwi   +8 more
doaj   +1 more source

Optical extinction due to intrinsic structural variations of photonic crystals

, 2005
Unavoidable variations in size and position of the building blocks of photonic crystals cause light scattering and extinction of coherent beams. We present a new model for both 2 and 3-dimensional photonic crystals that relates the extinction length to ...
A. Femius Koenderink, Ad Lagendijk, H. C. van de Hulst, N. W. Ashcroft, R. B. Wehrspohn, S. J. McNabb, S. Noda, T. Baba, Willem L. Vos   +8 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