Results 41 to 50 of about 2,800 (198)

Antimicrobial and Substantivity Properties of Silver Nanoparticles against Oral Microbiomes Clinically Isolated from Young and Young‐Adult Patients

Journal of Nanomaterials, Volume 2019, Issue 1, 2019., 2019
The dental plaque is an oral microbiome hardly associated to be the etiological agent of dental caries and periodontal disease which are still considered serious health public problems. Silver nanoparticles (AgNPs) have demonstrated to have good antimicrobial properties affecting a wide variety of microorganisms, including oral bacteria; however, there
León Francisco Espinosa-Cristóbal, Carolina Holguín-Meráz, Erasto Armando Zaragoza-Contreras, Rita Elizabeth Martínez-Martínez, Alejandro Donohue-Cornejo, Juan Pablo Loyola-Rodríguez, Juan Carlos Cuevas-González, Simón Yobanny Reyes-López, Alexander Pyatenko   +8 more
wiley   +1 more source

Preparation of Silver‐Doped Alumina Spherical Beads with Antimicrobial Properties

Journal of Nanomaterials, Volume 2018, Issue 1, 2018., 2018
The synthesis of composites with antibacterial properties is of great interest for the development of new biomedical applications. The antimicrobial properties of silver have been verified against microorganisms such as bacteria, viruses, and fungi; interest in silver has been renewed, so several technologies are currently in development, especially in
José Hafid Roque-Ruiz, Daniela Castillo-Ramírez, Álvaro de Jesús Ruíz-Baltazar, León Francisco Espinosa-Cristóbal, Simón Yobanny Reyes-López, Ilker S. Bayer   +5 more
wiley   +1 more source

Políticas públicas para agricultura familiar: breve análise sobre PRONAF [PDF]

, 2022
A agricultura familiar se desenvolve em um contexto de subsistência tendo em vista a satisfação das necessidades familiares. Para manter-se no mercado capitalista esta atividade necessita de incentivos, que vão desde a produção até a comercialização ...
Silva, Luana Fracimaria Oliveira da
core  

A política de apoio à agricultura familiar na conservação da biodiversidade no Brasil

Desenvolvimento e Meio Ambiente, 2010
Initially, this work deals with the concept of multifunctionality of agriculture and discusses the internationaldebate around this issue, which sets two groups of countries in opposite sides. Then, this worklists the roles played by the family farming in
Rogério Marcos Magalhães
doaj   +1 more source

Synthesis of α‐Alumina Nano‐Onions by Thermal Decomposition of Aluminum Formate

Journal of Nanomaterials, Volume 2018, Issue 1, 2018., 2018
A simplified route to prepare α‐Al2O3 nano‐onions and alumina powders with an excellent surface area through the thermal decomposition of aluminum formate (Al(O2CH)3) precursor is proposed. The calcined powders were characterized by infrared and 13C MAS NMR spectroscopy.
Nadia Vargas-Martínez, Álvaro de Jesús Ruíz-Baltazar, Nahúm A. Medellín-Castillo, Simón Yobanny Reyes-López, Ping Xiao   +4 more
wiley   +1 more source

Antiadherence and Antimicrobial Properties of Silver Nanoparticles against Streptococcus mutans on Brackets and Wires Used for Orthodontic Treatments

Journal of Nanomaterials, Volume 2018, Issue 1, 2018., 2018
White spot lesions (WSLs) are very frequent alterations during orthodontic treatments causing demineralization of the dental enamel. Various dental treatments have been developed to prevent WSLs; the prevalence and incidence of these lesions remain significantly high.
León Francisco Espinosa-Cristóbal, Natalie López-Ruiz, Denisse Cabada-Tarín, Simón Yobanny Reyes-López, Armando Zaragoza-Contreras, Daniel Constandse-Cortéz, Alejandro Donohué-Cornejo, Karla Tovar-Carrillo, Juan Carlos Cuevas-González, Takaomi Kobayashi, Victor M. Castaño   +10 more
wiley   +1 more source

Dose‐Dependent Antimicrobial Activity of Silver Nanoparticles on Polycaprolactone Fibers against Gram‐Positive and Gram‐Negative Bacteria

Journal of Nanomaterials, Volume 2017, Issue 1, 2017., 2017
The adhesion ability and adaptability of bacteria, coupled with constant use of the same bactericides, have made the increase in the diversity of treatments against infections necessary. Nanotechnology has played an important role in the search for new ways to prevent and treat infections, including the use of metallic nanoparticles with antibacterial ...
Erick Pazos-Ortiz, Jose Hafid Roque-Ruiz, Efrén Amador Hinojos-Márquez, Juan López-Esparza, Alejandro Donohué-Cornejo, Juan Carlos Cuevas-González, León Francisco Espinosa-Cristóbal, Simón Yobanny Reyes-López, Bo Tan   +8 more
wiley   +1 more source

Política pública e agricultura familiar:uma leitura do Pronaf

Estudos Sociedade e Agricultura, 2013
A partir da perspectiva da reprodução social discute-se algumas noções subjacentes aos princípios norteadores do Pronaf. Se a opção pela agricultura familiar como protagonista de um projeto de desenvolvimento rural representa um avanço em relação às ações públicas no campo, noções como “aumento da capacidade produtiva”, “verdadeiro agricultor” e ...
José Carneiro, Maria
core   +3 more sources

O Estado e as políticas públicas que tornaram a agricultura familiar uma agente importante do desenvolvimento

Mediações: Revista de Ciências Sociais, 2018
Este artigo parte da hipótese de que o Programa Nacional de Fortalecimento da Agricultura Familiar (Pronaf) foi um marco definitivo para os pequenos produtores rurais, até então excluídos das políticas públicas nacionais. Já que, após sua criação em 1995
Giovanni Barillari de Freitas
doaj   +1 more source

Structure of the agro amigo (Pronaf B) in Northeast Brazil

, 2023
: In the last three decades, the Brazilian rural space has undergone several transformations. This action sparked debates around the relationship between State, space and Rural Development, providing new ways to reflect the prism of sustainability in particular, with regard to public policies implemented in family farming.
CARVALHO, D. M. de, COSTA, J. E. da, ALCANTARA, F. V. de   +2 more
openaire   +2 more sources