Results 111 to 120 of about 58,724,855 (238)

Prevención de golpes de polvo en minas de carbón mediante la neutralización con material estéril

, 1999
Con el propósito de hacer una confrontación práctica de los fenómenos estudiados, se seleccionaron cuatro minas de la región Amagá - Angelópolis, en dos de ellas, las cuales se pueden considerar como medianamente mecanizadas, se determinó en forma ...
Castro Marín , William, Martínez G., Claudia P.   +1 more
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Anais do 12º Encontro de Pesquisa do Departamento de Odontologia da PUC Minas [PDF]

ANAIS DO 12º ENCONTRO DE PESQUISA DO DEPARTAMENTO DE ODONTOLOGIA DA PUC MINAS Realização: Departamento de Odontologia da PUC Minas Período: 30 de setembro e 01 de outubro de 2025 COMISSÃO ORGANIZADORA: Profa.
Anais do 12º Encontro de Pesquisa do Departamento de Odontologia da PUC Minas
core   +1 more source

Influence of carbonate apatite nanoparticles incorporated into commercial dental adhesives on immediate and long‐term microtensile bond strength

European Journal of Oral Sciences, EarlyView.
Abstract This study assessed whether integrating carbonate apatite nanoparticles with a CO3/PO4 molar ratio of 5 (CA5n) into commercial adhesives affected the immediate or the long‐term microtensile bond strength (µTBS) between composite resin and dentin.
Heba E. AbdelRazik, Jon E. Dahl, Mina Aker Sagen   +2 more
wiley   +1 more source

Fire‐driven forest degradation enhances termite activity and accelerates litter decomposition in the Amazonia rainforest

Insect Conservation and Diversity, EarlyView.
Forest degradation increased termite‐mediated litter decomposition, whereas no such effect was detected in undisturbed forests. Reduced ant predation and altered forest conditions were associated with higher termite abundance and faster litter decomposition.
Vanessa S. Ribeiro, José Henrique Schoereder, Tathiana G. Sobrinho, Paulo M. Brando, Filipe Viegas de Arruda, Ludmila Rattis, Og DeSouza, Márcia N. Macedo, Leonardo Maracahipes‐Santos, Lucas Navarro Paolucci   +9 more
wiley   +1 more source

Mezcla de biomasa con carbón térmico para su uso industrial como generador de energía del sistema de lecho fluidizado

, 2020
Las emisiones atmosféricas que generan los procesos que consumen carbón se constituyen como uno de los factores que influyen en el cambio climático debido a la generación de gases de efecto invernadero haciendo más difícil la sostenibilidad de las minas ...
Ramírez Cruz, Heydi Yurley, Ortiz Uribe, Sandy Johanna   +1 more
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Consensus on energy‐based devices for keloids and hypertrophic scars: A Latin American Delphi study

Journal of the European Academy of Dermatology and Venereology, EarlyView.
Latin American Delphi consensus supports a sequential, multimodal approach to keloids and hypertrophic scars: vascular devices for early/inflammatory lesions; intralesional triamcinolone + 5‐fluorouracil and other injectable drugs for active scars; fractional lasers for texture; and pigment‐targeting therapies for dyschromia, prioritizing safety in ...
Gisele Viana de Oliveira, Patricia Apt Druck, Alvaro Andres Luque Acevedo, Doris Hexsel, Gabriel Teixeira Gontijo, Gabriel Huerta Rivera, Luis Leobardo Velázquez‐Arenas, Flávia Alvim Sant Anna Addor, Fátima Agüero Zaputovich, Hector Leal‐Silva, Sebastian Leal‐Delgado, Carlos Echevarría Escribens, Kleber Danilo Ollague Murillo, Susana Misticone, Leandra D'orsi Metsavaht, Johnny de la Riva, Daniel Ricardo Galimberti, Silvia Karina Kaminsky Jedwab, Hector Ricardo Galván Garcia, Marcia Ramos‐e‐Silva, Mariana Rocha Andrade, Eugenio Reis‐Filho, Marcio Roberto Silva, George Kroumpouzos, Daniela Guzmán‐Sánchez   +24 more
wiley   +1 more source

Application of Baicalein Solution as a Novel Antioxidant After Bleaching: Analysis of Its Effects on Immediate Color Stability and the Reestablishment of Bond Strength in Bleached Enamel

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate the antioxidant capacity of the baicalein solution (BA), as well as its effect when applied for different times to the surface of bleached dental enamel, considering immediate color stability and bond strength. Materials and Methods Bovine enamel/dentin specimens (4 × 4 × 3 mm) were randomly divided into five groups (n ...
Herica Myllena Correia da Silva, Weslley Felipe Pin, Marina Rodrigues Santi, Beatriz Ometto Sahadi, Luís Roberto Marcondes Martins   +4 more
wiley   +1 more source

The Landless Rural Workers Movement (MST) and New Agrarian Questions in Brazil

Journal of Agrarian Change, EarlyView.
ABSTRACT The Landless Rural Workers Movement of Brazil (MST) primarily organized occupations of large‐scale farms, forcing the redistribution of land for creation of agrarian reform settlements. In the past 20 years, however, land occupations and the establishment of new agrarian reform settlements have consistently declined, while the MST shifted ...
Estevan Coca, Gustavo de L. T. Oliveira
wiley   +1 more source

Plano de conjunto de las minas de carbón de la provincia de Palencia: Escala 1: 75.000

, 1924
Un plano papel de la minas de carbón de ...
Patac, Ignacio
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Combustión espontánea en macizos de carbón

, 1997
La autocombustión en los macizos de carbón en la cuenca de Amagá, constituye uno de los principales factores asociados a las pérdidas económicas y humanas que han acompañado al proceso de explotación del carbón.
Castro Marín , William, Martínez G. , Claudia P.   +1 more
core   +1 more source