Plasma Polymerization
Mostrando 1-12 de 110 artigos, teses e dissertações.
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1. Performance of probe polymerization-conjunction-agarose gel electrophoresis in the rapid detection of KRAS gene mutation
Abstract This study aimed to develop a simple and rapid method to detect KRAS gene mutations for conventional clinical applications under laboratory conditions. The genotype of mutation sites was determined based on the occurrence of target bands in the corresponding lanes of the reaction tubes through polymerization-conjunction of the probes, probe purifica
Genet. Mol. Biol.. Publicado em: 16/07/2018
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2. Development of Molecularly Imprinted Polymers for Solid Phase Extraction of Parabens in Plasma Samples and Analysis by UHPLC-MS/MS
Two molecularly imprinted polymers (MIPs) were synthesized, by sol-gel and radical polymerization procedures. These MIPs were evaluated as selective stationary phases for miniaturized solid phase extraction (MISPE) to determine parabens in plasma samples by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Selective cavitie
J. Braz. Chem. Soc.. Publicado em: 2017-02
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3. Effect of plasma fluorination variables on the deposition and growth of partially fluorinated polymer over PMMA films
In this work, an investigation was made of the modification of film surface of Poly(methylmethacrylate) (PMMA) using the plasma polymerization technique. PMMA films 10 µm thick were obtained by Spin-Coating starting from a chloroform solution (15.36% w/w). The films were exposed to the plasma of CHF3 at different gas pressures and exposure times to increase
Polímeros. Publicado em: 2013
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4. Avaliação funcional dos eosinófilos na anemia falciforme e o efeito do tratamento com hidroxiureia / Altered functional properties of eosinophils in sickle cell anemia and effects of hydroxyurea therapy
Sickle cell anemia is the homozygous state for hemoglobin S. Inflammation plays an important role in the vaso-occlusive process of the disease, where leukocytes, proinflammatory cytokines and adhesion molecules are increased in the peripheral blood of patients with sickle cell anemia. Leukocytosis is associated with morbidity and mortality in these patients.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/05/2011
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5. Effect of different light curing methods on mechanical and physical properties of resin-cements polymerized through ceramic discs
OBJECTIVE: The aim of this study was to compare the polimerization ability of three different light-curing units (quartz tungsten halogen, light-emitting diodes and plasma arc) and their exposure modes (high-intensity and soft-start) by determination of microhardness, water sorption and solubility, and diametral tensile strength of 5 dual-curing resin cement
J. Appl. Oral Sci.. Publicado em: 01/07/2011
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6. Non genomic actions of triiodothyronine (T3) on the expression polyadenylation and distribution of TSH granules in thyrotrophs of hypothyroid rats / Ações não genômicas da triiodotironina (T3) sobre a expressão, poliadenilação e distribuição dos grânulos de TSH nos tireotrofos de ratos hipotireiodeos
The thyroid-stimulating hormone (TSH) is the main regulator of the synthesis and secretion of thyroid hormones (TH), which exert a negative feedback mechanism in the pituitary by reducing the synthesis of β and α (CGA - Glycoprotein hormones alpha chain) chains through mechanisms that involve changes in the tra
Publicado em: 2010
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7. Effect of different light-curing devices and aging procedures on composite knoop microhardness
The aim of this study was to evaluate the effect of light-curing devices (Halogen/HAL, Light Emitting Diodes/LED, Argon Laser/LAS and Plasma Arc/PAC) and aging procedures (Mechanical Cycling/MC, Thermal Cycling/TC, Storage/S, MC+TC and MC+TC+S) on the micro-hardness of bottom/B and top/T surfaces of 2-mm-high composite resin cylinders. The Knoop microhardnes
Brazilian Oral Research. Publicado em: 2009-12
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8. Análise da alteração dimensional em guias cirúrgicos de resina acrílica após esterilização por meio de plasma de peróxido de hidrogênio / Analysis of dimensional alterations of resin acrylic surgical splints after hydrogen peroxide plasma sterilization
Dimensional alterations in surgical splints made of acrylic resin used in orthognathic surgery were evaluated after hydrogen peroxide gas plasma sterilization. Fifteen specimens of resin acrylic was made by a metal model master with three different thickness: 1,5 mm, 3,0 mm and 5,0 mm, totally 45 specimens. Specimens digital image was acquired before and aft
Publicado em: 2009
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9. Uso de filmes obtido pela polimerização por plasma de tetraetilortossilicato na fabricação de dispositivos miniaturizados. / Use of films obtained by tetraethoxysilane plasma polymerization for production of miniaturized devices.
Os antigos e já bem desenvolvidos dispositivos para tratamentos e/ou análise de amostras têm sido grandemente estudados para novas adaptações, devido à importância de se construir sistemas miniaturizados. A obtenção destes sistemas miniaturizados baseia-se não apenas na construção ou metodologia, mas pode depender de modificação superficial par
Publicado em: 2009
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10. Haptoglobin genotypes in sickle cell disease / Genotipos da haptoglobina nas doenças falciformes
Oxidative stress, particularly in the endothelium, exerts a strong influence on the genesis of sickle cell disease (SCD) vasoocclusion and, consequently, on patients clinical evolution and survival. The pathophysiology of SCD is centered on the polymerization property of the desoxy-hemoglobin (Hb) S, but genetic factors can act as modulators of its clinical
Publicado em: 2009
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11. Influence of the curing method on the post-polymerization shrinkage stress of a composite resin
The aim of this study was to evaluate the effect of different curing methods on the stress generated by the polymerization shrinkage of a restorative composite in two moments: immediately after light exposure and after 5 min. Photoactivation was performed using two different light sources: (1) xenon plasma arc (PAC) light (1,500 mW/cm2 - 3s) and (2) a quartz
Journal of Applied Oral Science. Publicado em: 2008-08
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12. Study of Poly(N-vinylcarbazole) etching, obtendet by "living" radical polymerization. / Estudo da corrosão de Poli(N-vinilcarbazol), obtido via polimerização radical vivo.
O principal objetivo deste trabalho é a obtenção de trilhas com largura de dezenas de microns de Poli(N-vinilcarbazol) (PVK). Essas trilhas terão uma possível utilização em conjunto com outros materiais poliméricos como camada condutora na obtenção de um dispositivo semicondutor com material totalmente orgânico. O polímero escolhido foi o PVK, ob
Publicado em: 2008