Chlorine
Mostrando 1-12 de 617 artigos, teses e dissertações.
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1. Nicotine as a Catalyst for Chlorination Promoted by Hypochlorous Acid: Experimental and Theoretical Studies
There is robust evidence of the hypochlorous acid (HClO)-mediated damage in biomolecules, and nicotine boosts the chlorination potency of HClO. We present experimental and theoretical evidence of the mechanism by which nicotine catalyzes the chlorination of pyranine. The rate constants for chlorination of pyranine by HClO were measured in the presence (5.3 �
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Could polyhexanide and chlorine dioxide be used as an alternative to chlorhexidine? A systematic review
ABSTRACT BACKGROUND: Maintenance of oral microbiota balance is the simplest way to prevent infectious oral diseases, through controlling dental biofilm. Combined use of mouthwash and mechanical removal has been shown to be a very effective way for this. OBJECTIVES: To identify clinical studies comparing the antimicrobial effect and possible adverse effec
Sao Paulo Medical Journal. Publicado em: 2022
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3. Role of the reducing agent in tungsten extraction by chlorination with chlorine from an ore enriched by physical means
Abstract The effect of three reducing agents (sulphur dioxide, pyrite and carbon) on tungsten extraction from a scheelite-wolframite concentrate with chlorine gas was assessed. A low-grade ore (0.9% w/w WO3) was collected in the San Martín department, San Luis Province, Argentina, and subsequently enriched by physical means (65.73% w/w WO3). The minerals id
REM - International Engineering Journal. Publicado em: 2022
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4. Efeito da extração alcalina na redução do número Kappa no branqueamento ECF
RESUMO O estágio de hidrólise ácida (AHT), usado em sequências de branqueamento de polpa, tem como objetivo principal a degradação dos ácidos hexenurônicos, que estando presentes na polpa podem afetar sua alvura, reversão de alvura, entre outros. Apesar do benefício da utilização do estágio de hidrólise ácida, o pH desta etapa não é o mais a
Ciênc. Florest.. Publicado em: 2021-03
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5. Dermoscopy of late-onset nevus comedonicus,
ABSTRACT BACKGROUND: Faced with a pandemic, all healthcare actions need to reflect best practices, in order to avoid high transmissibility, complications and even hospitalizations. For hospital environments, the products recommended and authorized by regulatory institutions for environmental cleaning and disinfection need to be highly effective. OBJECTIVE:
An. Bras. Dermatol.. Publicado em: 2020-12
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6. Environmental cleaning to prevent COVID-19 infection. A rapid systematic review
ABSTRACT BACKGROUND: Faced with a pandemic, all healthcare actions need to reflect best practices, in order to avoid high transmissibility, complications and even hospitalizations. For hospital environments, the products recommended and authorized by regulatory institutions for environmental cleaning and disinfection need to be highly effective. OBJECTIVE:
Sao Paulo Med. J.. Publicado em: 2020-12
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7. Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network
Thermal analysis can be used to determine shelf-life and kinetic parameters in pharmaceutical systems. This work investigates the kinetic of lumefantrine thermal decomposition, an antimalarial, using non-isothermal and isothermal experimental data. The non-isothermal conditions are analyzed applying Vyazovkin method, while isothermal conditions employ models
J. Braz. Chem. Soc.. Publicado em: 2020-03
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8. Potential of thyme essential oil on arugula sanitization
RESUMO Óleos essenciais de espécies vegetais são fontes alternativas importantes de compostos antimicrobianos no combate a patógenos de importância alimentar. O presente estudo buscou avaliar a atividade antimicrobiana in vitro do óleo essencial de tomilho (Thymus vulgaris), e aplicá-lo na sanitização de rúcula (Eruca sativa) minimamente processada
Ciênc. agrotec.. Publicado em: 20/01/2020
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9. Correlação entre qualidade da água e ocorrência de diarreia e hepatite A no Distrito Federal/Brasil
RESUMO O abastecimento público de água de maneira segura e eficiente ainda é um desafio no Brasil. Isso pode levar a um aumento na incidência de agravos como Doença Diarreica Aguda (DDA) e hepatite A. O objetivo deste trabalho foi associar a qualidade da água distribuída e a ocorrência de DDA e hepatite A no Distrito Federal (DF) (Brasil) entre 2012
Saúde debate. Publicado em: 13/01/2020
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10. Synthesis, Characterization and Conformational Analysis of Two Novel 4(1H)‑Quinolinones
Quinolinones are a class of organic compounds known as alkaloids found in several plants and also can be synthesized. Their large use in therapies regards their wide biological potential like antitumor, psychiatric and neurological agents. Two substances were structurally characterized: (E)-3-(2-nitrobenzylidene)-2-(4-methoxyphenyl)-1-(phenylsulfonyl)-2,3-di
J. Braz. Chem. Soc.. Publicado em: 2020-01
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11. Corrosion Resistance of TiO2-ZrO2 Nanocomposite Thin Films Spin Coated on AISI 304 Stainless Steel in 3.5 wt. % NaCl Solution
Utilizing high chromium and nickel content in AISI 304 steel confers its good corrosion resistance. However, the high content of chromium and nickel increases the steel susceptibility to corrosion caused by the high concentration of chlorine. Consequently, the electrochemical and mechanical performance of the steel degrades. In this study, the effect of addi
Mat. Res.. Publicado em: 02/12/2019
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12. Biochemical, endocrine, and histopathological profile of liver and kidneys of sheep with pregnancy toxemia
RESUMO: Objetivou-se caracterizar o perfil bioquímico, hormonal, mineral e a histopatologia hepática e renal, relacionando com a severidade de casos naturais de toxemia da prenhez (TP) em ovelhas. Analisou-se 45 ovelhas na Clínica de Bovinos, Campus Garanhuns-UFRPE, com TP. Foram submetidas ao exame clínico, seguido de coleta de sangue e urina. Treze ani
Pesq. Vet. Bras.. Publicado em: 02/12/2019