Y Irradiation
Mostrando 13-24 de 116 artigos, teses e dissertações.
-
13. Cellular viability of Saccharomyces cerevisiae cultivated in association with contaminates bacterias of alcoholic fermentation / Viabilidade celular de Saccharomyces cerevisiae cultivada em associação com bactérias contaminantes da fermentação alcoólica
The aim of this work was to study the influence of the bacteria Bacillus and Lactobacillus, as well as their metabolic products, in reduction of cellular viability of Saccharomyces cerevisiae, when in mixed culture of yeast and active and treated bacteria. Also was to evaluated an alternative medium (MCC) for the cultivation of bacteria and yeast, constitute
Publicado em: 2005
-
14. Fabricação de multicamadas de Quantum Dots de PbTe por laser ablation
This thesis was dedicated to the fabrication of thin films, quantum dots and multilayer ofIV-VI semi conducting materiaIs by pulsed-Iaser deposition (PLD). In the first part we report on the construction of a "home made" facility for pulsed laser deposition. The basic experimental set-up fabricated for PLD consists of a vacuum chamber pumped to a base pressu
Publicado em: 2004
-
15. Avaliação do laser Er:YAG como condicionador de esmalte e dentina para procedimento de união a materiais resinosos
The purpose of this study was to verify: 1) the energy levei that could produce the morphologic aspect similar to dental tissues conditioned with phosphoric acid on dental tissues irradiated by Er:Y AG (Yttrium aluminium gamet Y ~L5012) laser; 2) the tension bond strength of an adhesive system applied over enamel and dentin, after pretreatment with phosphori
Publicado em: 2003
-
16. Avaliação clínica e histológica dos efeitos do laser de baixa potência (GaAIAs) na cicatrização de gengivoplastia em humanos / CLINICAL AND HISTOLOGICAL EVALUATION OF THE EFFECTS OF LOW-LEVEL LASER (GaAlAs) ON WOUND HEALING FOLLOWING GINGIVECTOMY IN HUMANS
The main goal of this research was to clinically and histologically evaluate the effects of Aluminum Gallium Arsenate laser 670nm in acceleration of wound healing after gingivoplasty in 13 patients. After surgery the right side of the patient (test group), received a laser dose of 4J/cm², in 48-hour intervals, during one week, totalizing 4 sessions. The
Publicado em: 2003
-
17. As copias de Veronese por François Boucher, do acervo do Museu de Arte de São Paulo
The main aim of this study is the anaIysis of both the historicaI and the artistic context of production of two paintings beIonging to the Art Museum of São Paulo. They are copies, painted by François Boucher (1703-1770), of previous paintings by PaoIo Veronese (1528-1588): Hercules between Vice and Virtue and Allegory of Wisdom and Strength. The originaIs
Publicado em: 2003
-
18. Modelo termodinamico para o aquecimento não-linear, a laser, e suas aplicações ao processamento de materiais
The subject of the computer modeling of the laser processing of materials continues to be highly topical in Materials Science. Basic to such an achievement was to have an well posed proposition to determine the time evolution of the temperature anywhere in the laser heated sample. Though models of such a kind abound in the literature, they are either rather
Publicado em: 1994
-
19. Caracterização de impurezas estruturais e de centros de defeitos relacionados ao A1 e OH quartzo natural
Characterization of lattice impurities and study of AI and H defects centers have conducted on natural quartz through a variety of experiments. For this purpose, about thirty samples of natural quartz were assembled from fourteen mines with known localities in Brazil. "The concentrations of Al, Fe , Li, Na e K have evaluated by atomic absorption spectroscopy
Publicado em: 1992
-
20. Ro ribonucleoproteins contribute to the resistance of Deinococcus radiodurans to ultraviolet irradiation
The genome of the radiation-resistant eubacterium Deinococcus radiodurans contains an ortholog of an RNA-binding protein known as the Ro 60-kD autoantigen. This protein, which was previously identified only in higher eukaryotes, is normally bound to small RNAs known as Y RNAs. We show that the Ro protein ortholog Rsr contributes to the resistance of D. radio
Cold Spring Harbor Laboratory Press.
-
21. Analysis of Y-Linked Mutations to Male Sterility in DROSOPHILA MELANOGASTER
The frequencies of newly induced male-sterilizing lesions on both the X and Y chromosomes of Drosophila melanogaster were determined after either 4000 r of γ-irradiation or adult feeding of ethyl methanesulfonate. The Y chromosome is approximately twice as sensitive as the X chromosome to newly induced male-sterilizing lesions after γ-irradiation, but sli
-
22. Orbital rhabdomyosarcoma: improved survival with combined pulsed chemotherapy and irradiation.
Three cases of embryonal orbital rhabdomyosarcoma are presented in which two cases had intracranial extension. All three are alive and well on follow-up several years after completing a 12-month course of combined pulsed chemotherapy and irradiation. The improved prognosis even in parameningeal involvement is emphasised.
-
23. Meiotic X-Y Exchange and Nondisjunction Induced by Irradiation in the Drosophila Male
-
24. The UV (Ribotoxic) Stress Response of Human Keratinocytes Involves the Unexpected Uncoupling of the Ras-Extracellular Signal-Regulated Kinase Signaling Cascade from the Activated Epidermal Growth Factor Receptor
In mammals, UVB radiation is of biological relevance primarily for the cells of the epidermis. We report here the existence of a UVB response that is specific for proliferating human epidermal keratinocytes. Unlike other cell types that also display a UVB response, keratinocytes respond to UVB irradiation with a transient but potent downregulation of the Ras
American Society for Microbiology.