Results 31 to 40 of about 4,523 (188)

La membrana de la punteadura en dos especies de Cacteae, Cactaceae

Botan‪ical Sciences, 2015
En este trabajo se caracterizan y comparan las punteaduras, la pared secundaria y la membrana de la punteadura en elementos traqueales en dos especies de Cactaceae con madera contrastante.
Dalia Grego-Valencia, Teresa Terrazas, Reyna Lara-Martínez, Luis Felipe Jiménez-García   +3 more
doaj   +1 more source

NEW LIGHTWEIGHT GYPSUM COMPOSITES FOR THE CONSTRUCTION OF LSF WALLS: A STUDY OF THERMAL BEHAVIOR

ce/papers, Volume 9, Issue 1, Page 125-134, April 2026.
Abstract This study analyses the thermal behaviour of a new lightweight gypsum material, developed in line with the principles of the circular economy, which has reduced the thermal conductivity of these compounds by up to 30.4%. Similarly, the contribution of these compounds to the energy efficiency of LSF walls with steel structures in different ...
Alicia Zaragoza‐Benzal, Daniel Ferrández, Alberto Leal‐Matilla, Paulo Santos   +3 more
wiley   +1 more source

Variação radial da densidade básica e comprimento das fibras da madeira de Tectona grandis L.

Floresta e Ambiente, 2023
Resumo A estrutura anatômica e as propriedades físicas e mecânicas do lenho variam significativamente entre árvores de uma mesma espécie e mesmo entre diferentes partes de uma mesma árvore.
Maria da Penha Moreira Gonçalves, Ranusa Coffler, Alexandre Monteiro de Carvalho, Rosilei Aparecida Garcia   +3 more
doaj  

Incorporation of MoO3 Nanoparticles Into Polypropylene Fibers via Melt Spinning: Investigation of Mechanical, Thermal, and Chromic Properties

Journal of Applied Polymer Science, Volume 143, Issue 11, March 15, 2026.
Pure PP and PP/MoO 3 filaments produced by melt spinning. ABSTRACT Polypropylene (PP) composite fibers containing 0.10, 0.20, and 0.50 wt% molybdenum oxide (MoO 3 ) nanoparticles were produced via melt spinning. In the present study, the effect of this addition on the mechanical, thermal, and chromic properties of the fibers was investigated.
Raphael Borges Magalhães Bergamini, Maria Inês Bruno Tavares, Camila Vicente de Farias, Fabiane Gomes de Oliveira, Karla Mayara Arguelles Simões, Diego de Holanda Saboya Souza   +5 more
wiley   +1 more source

La intercara fibra-matriz de un compuesto CMC de SiC-SiC: Comparación de imágenes SEM, TEM y AFM

Revista de Metalurgia, 1998
Se comparan los resultados de tres técnicas de microscopía, SEM, TEM y AFM, aplicadas a resolver la zona de interfase carbonosa fibras-matriz de un material compuesto de matriz cerámica (CMC) reforzado con fibras continuas, SiC/C/SiC, fabricado por ...
M. R. Elizalde, E. Paris, J. Gil-Sevillano   +2 more
doaj   +1 more source

Optimizing biophysical properties of cellular niches to enhance stem cell‐derived extracellular vesicle function in musculoskeletal regeneration

BMEMat, Volume 4, Issue 1, March 2026.
Extracellular vesicles (EVs) derived from stem cells show promise for applications in regenerative medicine, but their scalability and yield remain challenges. This review explores the approaches for biophysical modulations within cell niches on EV properties, discusses the current clinical application of EVs, and provides an outlook on the existing ...
Yang Xu, Chung Yin Matthew Cheung, Liling Liu, Hoi Pan Harry Cheung, Kam Yu Tam, Dai Fei Elmer Ker, Sarah H. Cartmell, Chuanbin Mao, Zhiyong Zhang, Dan Michelle Wang   +9 more
wiley   +1 more source

Caracterización de fibras vegetales en papeles usados en restauración: Abacá y Papel Japón.

Boletín de la Sociedad Argentina de Botánica, 2022
Introducción y objetivos: Las excelentes propiedades físicas y químicas que presentan el papel Abacá y el papel Japón hacen que sean los materiales más utilizados en restauración de bienes culturales en soporte papel. El objetivo del presente trabajo es
Elida Claudia Alcaraz, Daniela Silvana Nitiu, Andrea Cecilia Mallo   +2 more
doaj  

Comparative Biocompatibility of Portland‐Based Endodontic Cements Containing Niobium and/or Bismuth Oxides in Rat Subcutaneous Tissue

BioMed Research International, Volume 2026, Issue 1, 2026.
Objectives To evaluate the in vitro cytocompatibility and osteogenic potential and the in vivo biocompatibility of two experimental endodontic cements based on Portland cement combined with either Nb2O5 (F6) and/or bismuth oxide (F7) in a rat subcutaneous implantation model. Methods For the in vitro study, MC3T3‐E1 preosteoblastic cells were exposed to
Raphael Victor Silva Andrade, Rafaela Alcindo Silva de Souza Fé, Vladimir Galdino Sabino, Carlos Augusto Galvão Barboza, Maria Luiza Diniz de Sousa Lopes, Nizyara Costa da Silva, Valkleidson Santos de Araujo, Amanda Silveira da Silva, Raimundo Fernandes de Araujo Junior, Naianne Kelly Clebis, Isadora Luisa Gomes da Silva, Pedro Catalão Moura, Sofia Pessanha, Aurigena Antunes de Araújo, Baisakhi Banerjee   +14 more
wiley   +1 more source

Fibras Ópticas

Neutro à Terra, 2017
Com a obrigatoriedade de dotar todos os edifícios e urbanizações com instalações de fibra óptica devido ao Decreto-Lei 123/2009, todos os projectistas, retalhistas, instaladores e promotores deparam-se com a necessidade de implementar algo ainda estranho para muitos.
openaire   +2 more sources

Centesimal composition and physical-chemistry analysis of the edible mushroom Lentinus strigosus occurring in the Brazilian Amazon

Anais da Academia Brasileira de Ciências, 2013
The centesimal composition and the physical and chemical analyses of Lentinus strigosus, an edible mushroom occurring in the Brazilian Amazon and produced in alternative substrates based on wood and agroindustrial residues, were evaluated.
CECI SALES-CAMPOS, LIDIA M. ARAUJO, MARLI T.A. MINHONI, MEIRE C.N. ANDRADE   +3 more
doaj   +1 more source