Results: 30

Catalysis at gold-ligand interfaces: a frustrated Lewis pair mechanism for selective reduction reaction

The interaction of the organic ligands with metal nanoparticle has a very important role for applications in catalysis, as well as other processes involving ligands that can activate or poison the surface of metal nanoparticles. Very little has been studied so far on the role of organic ligands used eith...

Green synthesis of gold nanaoparticles using Delphinium Chitralense tuber extracts, their characterization and enzyme inhibitory potential

Braz. j. biol; 82 (), 2022
Greeen synthesis has been introduced as an alternative to chemical synthesis due to the serious consequences. Metal nanoparticles synthesized through green approach have different pharmaceutical, medical and agricultural applications. The present study followed a green and simple route for the preparatio...

Consequências do Mercúrio na Saúde Humana e no Meio Ambiente

Uma das coisas mais bonitas em nossa cultura Munduruku e que nos foi passada por nossos ancestrais é de que nós fazemos parte do mundo e o mundo faz parte de cada um de nós. Tudo foi criado a partir da voz mágica de Karusakaibo usando os corpos dos nossos parentes-seres para fazer nascer todos os nos...

Gold nanoparticles as a promising treatment for diabetes and its complications: Current and future potentials

Diabetes and its complications represent a major cause of morbidity and mortality in diabetes patients. This review is aimed to find the potential of gold nanoparticles (AuNPs) to act as therapeutic agents for diabetes and its complications. Here, we outline the literature related to the self-therapeutic...

Evolving surgical management of pediatric vesicoureteral reflux: is open ureteral reimplantation still the 'Gold Standard'?

Int. braz. j. urol; 46 (3), 2020
ABSTRACT Vesicoureteral reflux, the retrograde flow of urine from the bladder into the upper urinary tract, is one of the most common urologic diagnoses in the pediatric population. Once detected, therapeutic options for urinary reflux are diverse, ranging from observation with or without continuous low-...

Hearing function of gold miners with and without a history of tuberculosis treatment: a retrospective data review

Abstract Introduction: South Africa has a high prevalence of co-existing tuberculosis and HIV. As ototoxicity linked to the treatments for these conditions occurs with concomitant exposure to other ear toxins such as hazardous noise exposure, it is important to investigate the combination impact of thes...

Uma carta que veio das minas: natureza e mineração do ouro na mobilização de preceitos morais e políticos no século XVIII

Resumo O artigo analisa, a partir de documento inédito, a "Carta que veio das minas", de 1727, como os conceitos de natureza e mineração foram utilizados para mobilizar preceitos morais e políticos na construção de uma interpretação sobre Minas Gerais. Em um primeiro momento, analisam-se o docume...

Understanding gold toxicity in aerobically-grown Escherichia coli

Biol. Res; 53 (), 2020
BACKGROUND: There Is an emerging field to put Into practice new strategies for developing molecules with antimicrobial properties. In this line, several metals and metalloids are currently being used for these purposes, although their cellular effect(s) or target(s) in a particular organism are still unk...

The impact of imported malaria by gold miners in Roraima: characterizing the spatial dynamics of autochthonous and imported malaria in an urban region of Boa Vista

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND The number of malaria cases in Roraima nearly tripled from 2016 to 2018. The capital, Boa Vista, considered a low-risk area for malaria transmission, reported an increasing number of autochthonous and imported cases. OBJECTIVES This study describes a spatial analysis on malaria cases in an ...

Preparation and in vitro characterization of monoclonal antibody ranibizumab conjugated magnetic nanoparticles for ocular drug delivery

Gold coated magnetite nanoparticles were prepared and coated with ranibizumab as an ocular drug delivery system. The surface morphologies of the nanoparticles were determined by Scanning Electron Microscopy (SEM). The size and surface charge were determined by using the dynamic light scattering (DLS) tec...