Results 61 to 70 of about 170,343 (261)

Efecto de la gestión forestal en la cantidad de carbono del suelo mineral en una masa de Pinus pinaster Ait. [PDF]

, 2012
El conocimiento del impacto de la gestión forestal sobre los diversos compartimentos de carbono existentes en una masa forestal es prioritario para la sostenibilidad del aprovechamiento y gestión de los sistemas forestales.
Bravo-Oviedo, Andrés, López Senespleda, Eduardo, Montero González, Gregorio, Onrubia Fernández, Raquel, Rubio Cuadrado, Álvaro, Ruiz-Peinado, Ricardo, Río Gaztelurrutia, Miren del, Sastre López, Salvador   +7 more
core   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

Advanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu, Qihang Lv, Lubin Liu, Zhezhe Zhou, Chentao Yan, Ao Qin, Jianting Ma, Shuhui Liang, Yue Xu, Min Hong, Bin Li, Pingan Song   +11 more
wiley   +1 more source

Seasonal Sheep Grazing Does Not Enhance Stable or Total Soil Carbon Stocks in a Long‐Term Calcareous Grassland Experiment

Ecology and Evolution
Soils hold a globally important carbon pool that is generally more persistent than the carbon stored in plant biomass. However, soil carbon is becoming increasingly vulnerable to environmental changes such as soil warming, fire, and erosion.
David Encarnation, Deborah Ashworth, Richard Bardgett, Mona Edwards, Clive Hambler, Jeppe Kristensen, Andrew Hector   +6 more
doaj   +1 more source

PHYSICAL FRACTIONS OF GRAY FOREST SOIL OF VLADIMIR’S OPOLE AND ITS RELATIONSHIP WITH CROP PRODUCTIVITY OF AGRICULTURAL CROPS

Бюллетень Почвенного института им. В.В. Докучаева, 2018
In the physical fractions of gray forest soil (agroseraya typical): clay (up to d = 0.001 мм), light (lighter than 2 g/cm3) and the residue fraction, the contents of total carbon and phosphorus (total, organic and mineral forms) were determined.
O. B. Rogova, N. A. Kolobova, D. V. Karpova, A. L. Ivanov   +3 more
doaj   +1 more source

¿Cómo comenzar ya a mantener inexplotadas las reservas de combustible fósiles?. El legado internacional de la Iniciativa Yasuní-ITT [PDF]

, 2015
Mientras las naciones del mundo se preparan para alcanzar un acuerdo vinculante a fines de este año en París, una de las preocupaciones centrales de sus líderes debería ser, cómo enfrentar la certeza que, para evitar los efectos catastróficos del futuro ...
Larrea Maldonado, Carlos, Murmis, María Rosa   +1 more
core  

Laser‐Assisted Processing and Modification of Bioactive Glasses: A Review

Advanced Healthcare Materials, EarlyView.
Laser technologies provide powerful tools to process and transform bioactive glasses for advanced biomedical applications. This review discusses laser‐matter interaction mechanisms, laser surface engineering, and laser‐assisted fabrication of scaffolds and nanofibers.
Antonio Riveiro, Mario González‐Quintas, Mónica Fernández‐Arias, Jesús del Val, Félix Quintero, Rafael Comesaña, Fernando Lusquiños, Julian R. Jones, Juan Pou   +8 more
wiley   +1 more source

Secondary Mineral-Specific Mechanisms of Soil Carbon Sequestration: A Review

能源环境保护
As the largest organic carbon reservoir in terrestrial ecosystems, soils store approximately 1 500−2 400 Pg of organic C, which is 2−3 times larger than the atmospheric carbon pool.
Weichun YANG, Yuhan WAN, Qingzhu LI, Xiaofeng HUANG, Kang ZHOU, Yukang XING, Qi LIAO, Mengying SI, Zhihui YANG   +8 more
doaj   +1 more source

SiO2‐CaOCME/Poly(Tetrahydrofuran)/Poly(Caprolactone) 3D‐Printed Scaffolds Drive Human‐Bone Marrow Stromal Cell Osteogenic Differentiation

Advanced Healthcare Materials, EarlyView.
3D printed hybrid scaffolds combining bioactive silica–calcium chemistry with elastic polymers guide human bone stem cells to form bone. The scaffolds support cell survival, organization, and invasion while releasing osteogenic ions. Together, architecture and composition drive bone‐specific gene expression, extracellular matrix organization, and ...
David R. Sory, Agathe C.M. Heyraud, Julian R. Jones, Sara M. Rankin   +3 more
wiley   +1 more source

La primitividad de la infraestructura colombiana como agente reductor de las exportaciones de carbón térmico al mundo [PDF]

, 2013
El mercado del carbón térmico en Colombia tiene un gran potencial en el mundo, sin embargo las condiciones actuales de la infraestructura y los elevados costos logísticos del transporte no han permitido que este país logre asumir una posición dominante ...
Monroy Ramírez, Viviana, Navarrete Flórez, Diego Leonardo   +1 more
core  

Characterization of an Injectable Poly(vinyl alcohol)‐gelatin Hydrogel for Growth Factor Delivery in an Orthopedic Application

Advanced Healthcare Materials, EarlyView.
This work introduces photo‐crosslinkable tyraminated poly(vinyl alcohol)‐gelatin (PVA‐GT) hydrogels as tunable injectable platforms for tissue engineering and growth factor delivery applications. This schematic illustrates the two developed hydrogel formulations and the experimental workflow used to evaluate their physico‐chemical properties in vitro ...
Alessia Longoni, Gretel S. Major, Sam Arnold, Samuel Tomkins, Eugenia Spessot, Scott Loeffler, Kieran Lau, Richard Tan, Jessica Harte, Roslyn Kemp, Tess Reynolds, Jelena Rnjak‐Kovacina, Gary J. Hooper, Tim B. F. Woodfield, David C. Kieser, Khoon S. Lim   +15 more
wiley   +1 more source