Solar Protection Factor
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Synthesis of 1,2,3-Triazole Benzophenone Derivatives and Evaluation of in vitro Sun Protection, Antioxidant Properties, and Antiproliferative Activity on HT-144 Melanoma Cells
Benzophenones display several biological activities, including antioxidant, anticancer, and photoprotective. Furthermore, antioxidants can minimize both ultraviolet absorption and tumor development. In the present investigation, a series of twenty-six 1,2,3-triazole-benzophenone derivatives were synthesized and had their antioxidant, anticancer, and photopro
J. Braz. Chem. Soc.. Publicado em: 2021-03
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2. PREPARATION AND CHARACTERIZATION OF A QUERCETIN-TETRAETHYL ETHER-BASED PHOTOPROTECTIVE NANOEMULSION
Although Quercetin absorbs in the UVA/UVB electromagnetic region, it is limited for applications as a UV filter due to its low lipophilicity and capacity to penetrate the epidermis. In order to overcome this limitation, we synthetized and evaluated the photo protective properties of a derivative obtained from Quercetin. The derivative was prepared by alkylat
Quím. Nova. Publicado em: 27/05/2019
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3. SÍNTESE MECANOQUÍMICA DE AZINAS ACÍCLICAS SIMÉTRICAS E DETERMINAÇÃO DO FATOR DE PROTEÇÃO SOLAR UVB IN VITRO
Skin cancer is a frequent neoplasm in Brazil and this, is observed the importance of the development of new sunscreens using simple methodologies capable of reducing production costs. In this context, six symmetric acyclic azines were synthesized and characterized, with reaction yields between 54 and 84%, short reaction times (5 to 10 min), and manual grindi
Quím. Nova. Publicado em: 02/05/2019
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4. High frequency of cutaneous squamous cell carcinoma in Friesian Milchschaf sheep in Uruguay
RESUMO: Descreveram-se carcinomas de células escamosas (CCE) nas orelhas, pálpebras e olhos em cinco ovinos da raça Frisona Milchschaf em dois rebanhos de criação extensiva no Uruguai. A prevalência nos rebanhos foi de 2,12% e 2,53%. Macroscopicamente se observaram lesões focais ou multifocais, com aumento de volume, nodulares, verrucosas ou em placas
Pesq. Vet. Bras.. Publicado em: 02/05/2019
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5. Multifunctional photoprotection: corrective makeup for cutaneous dyschromias
The aim of this study was to develop and evaluate a corrective and photoprotective makeup for patients with dyschromias. An emulsion was prepared and pigment mixtures were incorporated in the formulation, producing five shades of corrective makeup: BEIGE (I, II, III), BRONZE and TAN. The sun protection factor (SPF) and UVA/UVB ratio of the corrective makeup
Braz. J. Pharm. Sci.. Publicado em: 08/04/2019
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6. In vitro and in vivo evaluation of efficacy and safety of photoprotective formulations containing antioxidant extracts
ABSTRACT Chronic exposure to solar radiation could contribute to premature skin aging and skin cancer. Skin presents its own antioxidant defense, however when defenses are out of balance, reactive oxygen species could damage biological structures. In the present work, an oil-in-water photoprotective emulsion was developed and Bauhinia microstachya var. massa
Rev. bras. farmacogn.. Publicado em: 2016-04
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7. PROTETORES SOLARES À BASE DE FILTROS INORGÂNICOS: DESENVOLVIMENTO E CARACTERIZAÇÃO
The inorganic sunscreens represented mainly by titanium dioxide (TiO2) and Zinc Oxide (ZnO), were classified as inert particles, therefore, they are pointed out as the best way to protect the skin against the harmful effects of ultraviolet radiation (UV). However, recent studies suggest that these particles have several stability problems that may lead to a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/01/2012
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8. Variação do fator de proteção solar (F. P. S.) de acordo com a técnica de preparação de fotoprotetores tópicos
Comparação do fator de proteção solar (F.P.S.) avaliado pelo método de Mansur e colaboradores do 3-(4 metilbenzilideno) cânfora na concentração de 2,5% incorporado em emulsões O/A por duas diferentes técnicas de preparação.
Publicado em: 2010
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9. Avaliação de um método para a determinação do fator de proteção solar do Eusolex 6300 por espectrofotometria no ultravioleta em diferentes concentrações de preparações magistrais
O Fator de proteção solar (F.P.S.) do 3-(4 metilbenzilideno)cânfora (Eusolex 6300) em concentrações de 0,5 % a 5,0 %, incorporado em emulsões óleo em água preparadas em condições magistrais, foi avaliado pelo Método de Mansur e colaboradores.
Publicado em: 2010
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10. The influence of the amount of sunscreen applied and its sun protection factor (SPF): evaluation of two different sunscreens including the same ingredients at different concentrations / Influência da quantidade aplicada de protetores solares no fator de proteção solar (FPS): avaliação de dois protetores solares com os mesmos ingredientes em diferentes concentrações
Introdução: Para determinação do Fator de Proteção Solar (FPS) de protetores solares, de acordo com o FDA e os protocolos internacionais, a quantidade aplicada de produto nos voluntários é de 2 mg/cm2. Diferentes estudos mostraram, entretanto, que os usuários aplicam quantidades muito inferiores a esta quando expostos ao sol. A relação entre a qua
Publicado em: 2009
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11. Protetores solares
Health problems related to UV radiation can be minimized by the appropriate use of sunscreens. Different kinds of sunscreens are reported in the literature, even though there is a misleading denomination among them and few discussions are presented about how they work. This paper describes some important aspects in order to understand sunscreen phenomena suc
Química Nova. Publicado em: 2007-02
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12. Influência da luz natural refletida pelo entorno na iluminação de edifícios no trópico úmido
The development of the urban space has a great impact on daylight availability. Urban design can improve the use of daylight in buildings. Climatic conditions influence the availability of daylight considerably and should be taken into account by Urban Codes. In the humid tropic, the sky factor may decrease due to the use of the solar protection. That has be
Publicado em: 2006