Chemical Controls
Mostrando 1-12 de 214 artigos, teses e dissertações.
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1. A Clorexidina é eficaz para diminuir a carga viral no pré-tratamento odontológico?
Algumas evidências apontam que o bochecho pré-operatório com substâncias antimicrobianas, como o digluconato de clorexidina,pode reduzir o número de micróbios na cavidade bucal
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E pode ser um importante adjuvante no pré-tratamento odontológico.
Entretanto, não há evidência suficiente para confirmar a eficácia destes bochecho
Núcleo de Telessaúde Amazonas. Publicado em: 12/06/2023
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2. The effect of the commercial fish gelatin protein hydrolysate on rainbow trout (Oncorhynchus mykiss) fillet quality
Abstract Willing to increase the shelf life of the food matrix, studies regarding new preservations methods are developed to preserve fish deterioration. The application of natural additives as preservatives is increasingly common, with a current emphasis on the growing use of protein hydrolysates, in substitution to artificial ones. These compounds have bee
Food Sci. Technol. Publicado em: 2020-12
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3. Does Crop-Livestock-Forest Systems Contribute to Soil Quality in Brazilian Savannas?
ABSTRACT In this paper we discuss the impact on conversion degraded pasture areas into an integrated crop, livestock and forest system (ICLFS). We collected 30 soil samples at 0-0.1 m depth in five agroforestry systems, degraded pasture and native areas along Brazilian Cerrado biome. We analyzed the influence of chemical variables on microbial biomass carbon
Floresta Ambient.. Publicado em: 01/07/2019
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4. Bioassay for Determining Persistence of the Herbicide Saflufenacil in an Oxisol
RESUMO: A persistência de um herbicida é definida como a habilidade para manter a integridade da molécula e suas propriedades químicas, físicas e fitotóxicas no ambiente onde ele foi aplicado. O conhecimento da persistência tem implicações tanto sobre a toxicidade gerada sobre espécies cultivadas em sucessão quanto sobre o período em que o herbic
Planta daninha. Publicado em: 13/06/2019
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5. Laboratory evidence for the hematopoietic potential of Beta vulgaris leaf and stalk extract in a phenylhydrazine model of anemia
This study was designed to provide laboratory evidence supporting the hematopoietic effect of Beta vulgaris (beet) leaf aqueous extract in phenylhydrazine-induced anemia model in albino rats. Extraction of the leaves/stalks was done by maceration in 30% hydro-ethanol for 48 h. An intraperitoneal injection of 20 mg/kg phenylhydrazine was applied for two conse
Braz J Med Biol Res. Publicado em: 11/10/2018
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6. Influence of reaction time on the structure of polyaniline synthesized on a pre-pilot scale
Abstract The aim of this work is to follow the structural variations of polyaniline (PAni) obtained by chemical oxidation on a pre-pilot scale, with different reaction times. Synthesis of PAni is well known, but when it is carried out on a pre-pilot scale, several factors can lead to structural changes and understanding these changes is important to improve
Braz. J. Chem. Eng.. Publicado em: 2018-01
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7. Ph, Ammonia Flux, and Total Nitrogen in Duck Litter with Chemical Blends - A Field Study
ABSTRACT This study was designed to evaluate the effects of chemical blend additives to duck litter on pH, ammonia (NH3) fluxes, total nitrogen (TN) under a small pen trial. One hundred twenty 1-day-old duck (pekin) were randomly assigned to 6 pens in a completely randomized design during 6 weeks. Control received no litter treatment whereas top-dressed trea
Rev. Bras. Cienc. Avic.. Publicado em: 2017-12
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8. Cymbopogon citratus essential oil: effect on polymicrobial caries-related biofilm with low cytotoxicity
Abstract The objective of this study was to evaluate the effects of Cymbopogon citratus essential oil and its main compound (citral) against primary dental colonizers and caries-related species. Chemical characterization of the essential oil was performed by gas chromatography/mass spectroscopy (GC/MS), and the main compound was determined. Antimicrobial act
Braz. oral res.. Publicado em: 06/11/2017
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9. Physical-Chemical Properties of the Support Immobead 150 Before and After the Immobilization Process of Lipase
We carried out the physico-chemical characterization of Immobead 150, a hydrophobic support for the immobilization of lipases. Thermomyces lanuginosus lipase (TLL) was immobilized on Immobead 150 by multipoint covalent attachment (ImmTLL) and the morphological, textural, structural, thermal, and physico-chemical properties of the support, before and after en
J. Braz. Chem. Soc.. Publicado em: 2017-08
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10. ANALYSIS OF THERMAL AND AQUEOUS SUSPENSION STABILITIES OF CHITOSAN BASED NANOENCAPSULATED VITAMINS
The food nutritional content is reduced as result of vitamins degradation. In order to minimize such losses, the encapsulation technique into polymeric nanoparticles (NPs) could offer an additional protection, extending the stability. The crosslinking formed by the ionic gelation process of chitosan and tripolyphosphate (Chi-TPP) has been widely used as an e
Quím. Nova. Publicado em: 2016-11
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11. Effect of exogenous phytohormones treatment on glycyrrhizic acid accumulation and preliminary exploration of the chemical control network based on glycyrrhizic acid in root of Glycyrrhiza uralensis
ABSTRACT One-year-old Glycyrrhiza uralensis Fisch. ex DC, Fabaceae, was treated with three exogenous phytohormones in June and July, namely gibberellin, auxin (indole-3-acetic acid), methyl jasmonate at different concentrations. Control plants were treated with water. Roots of controls and hormones-treated G. uralensis plants were harvested at different time
Rev. bras. farmacogn.. Publicado em: 2016-08
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12. Occupational exposure of workers to pesticides: Toxicogenetics and susceptibility gene polymorphisms
Farm workers are often exposed to pesticides, which are products belonging to a specific chemical group that affects the health of agricultural workers and is mostly recognized as genotoxic and carcinogenic. The exposure of workers from Piauí, Brazil, to these hazardous chemicals was assessed and cytogenetic alterations were evaluated using the buccal micro
Genet. Mol. Biol.. Publicado em: 2015-09