Results 51 to 60 of about 252,417 (236)

Erosión laminar post-incendio en Fornillos de Apiés (Huesca). Riesgo teórico versus erosión actual [PDF]

, 2017
El 10 de agosto de 2016 se produjo un incendio en el término municipal de Fornillos de Apiés, Huesca, donde más de 400 hectáreas fueron calcinadas. El presente estudio se centra en medir la tasa de erosión en una de las laderas afectadas por el incendio,
Gracia Benito, Alejandro, Ortíz Perpiñá, Oriol, Girona García, Antonio   +2 more
core  

Mechanical Programming of PEGDA‐β‐CD Polyrotaxane‐Based Hydrogels via Host–Guest Molecular Recognition

Advanced Functional Materials, EarlyView.
A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen, Xudan Xing, Haopu Su, Dominik Voll, Xiaohe Xu, Jiafeng Wan, Tongtong Cui, Christian W. Schmitt, Stefan Bräse, Peng Li, Patrick Théato   +10 more
wiley   +1 more source

Advancing SafeWax, A Bio‐Inspired Superhydrophobic Coating, Toward Sustainable and Climate‐Resilient Crop Protection

Advanced Functional Materials, EarlyView.
This study advances SafeWax, a bio‐inspired, fatty‐acids‐based superhydrophobic coating, by identifying an agriculturally compliant solvent and revealing how solvent‐controlled Fatty acid crystallization governs the coating's microscopic structure and performance.
Niv Ben‐Arie, Iryna Polishchuk, Franziska Tauber, Coralie Schneider, Elena Prudnikov, Alessia Calora, Silvia Milita, Simona Fermani, Mireia Alejandra Ibanez Revert, Ilaria Filippetti, Claudio Ratti, Matthias Kellermeier, Markus Rueckel, Boaz Pokroy   +13 more
wiley   +1 more source

Bio-Inspired Gradient Coatings Enhance the Leading Edge Erosion Resistance of Wind Blades. [PDF]

Adv Sci (Weinh)
Rain‐induced erosion of the wind turbine blade leading edge poses a critical challenge to maintenance and operation. Here, we propose a bio‐inspired approach for erosion protection utilising a platelet‐reinforced polyurethane coating with a graded through‐thickness architecture.
Guevara-Sotelo NS, Teuwen J, Masania K.
europepmc   +2 more sources

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source

Aplicación del modelo U.S.L.E para la determinación de la pérdida de suelo por procesos erosivos en los páramos de la zona noroccidental del volcán Casahuala, provincia de Tungurahua, Ecuador [PDF]

, 2017
La presente disertación de grado tiene como objetivo la determinación de la cantidad de suelo degradado por procesos erosivos en los páramos de la zona noroccidental del volcán Casahuala, con la aplicación de la ecuación universal de degradación de suelo
Calero Pérez, Pablo Andrés
core   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

Advanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao, Panpan Zhang, Jinqiang Zhang, Xi‐lin Wu, Tara Pukala, Yifei Wang, Bernt Johannessen, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

La erosión de los suelos en Panamá y sus impactos [PDF]

, 2019
La tasa de erosión en Panamá, es alarmantemente alta. Para el año 1960 el total de suelos erosionados era 500,000 hectáreas. En 1970 las áreas erosionadas cubrían unas 748,000 hectáreas y un total de 2, 018,000 erosionadas en 1987.
Ruiz Morales, Giancarlo A.
core   +1 more source

Transporte de sedimentos y cambio geomorfológico en un Delta tropical de alta descarga (río Magdalena, Colombia): Perspectivas de un periodo de intensos cambios e intervención humana

Siembra
Existen fuertes indicios de que los cambios ambientales y las intervenciones humanas han afectado a la descarga de agua dulce y al flujo de sedimentos en el río Magdalena (noroeste de Sudamérica) en el periodo comprendido entre 1990 y 2020.
Juan C. Restrepo L.
doaj