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Search Results: 1 - 10 of 16016 matches for " Camila Castro "
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Characterization of Mixed Mortars with Partial Replacement of Sand with Sugarcane Bagasse Ash (SCBA)  [PDF]
Carlos Humberto Martins, Tainara Rigotti de Castro, Camila Colhado Gallo
Open Journal of Civil Engineering (OJCE) , 2016, DOI: 10.4236/ojce.2016.63035
Abstract: This paper analyzes the effect of partial sand replacement by sugarcane bagasse ash in mixed mortars utilizing a 1:2:9 mix proportion by volume for cement, lime and fine aggregate. The ash is characterized by its particle distribution, pozzolanic activity, chemical composition, bulk density, moisture content and loss on ignition. The mortars are then produced with a constant water/cement ratio of 2.64 and a partial replacement of sand with sugarcane bagasse ash using different substitution percentages (0%, 5%, 10%, 15% and 20%). The mortars are characterized in the plastic state: water retention, bulk density and air content, and in the hardened state: capillary coefficient, tensile strength by bending test, axial compressive strength and flexural and longitudinal Young’s modulus. The statistical analysis of the results showed that the ash can be incorporated into mortars without causing significant alterations in its properties.
Flash microbiocide: A Rapid and Economic Method for Determination of MBC and MFC  [PDF]
Camila Hernandes, Juliana da Silva Coppede, Bianca Waléria Bertoni, Suzelei de Castro Fran?a, Ana Maria Soares Pereira
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.44104

Although nowadays there are methods for determining the Minimal Bactericidal Concentration and Minimal Fungicidal Concentration, it is indispensable that the establishment of innovative methodologies could be more practical and cheaper. The new methodology Flash microbiocide is an assay in which one aliquot from 96 well plate of Minimal Inhibitory Concentration test is transferred to another plate containing different culture medium. The correspondence with the reference methods described in the National Committee for Clinical Laboratory Standards (NCCLS-CLSI) document M26-A was achieved, denoting the efficiency of this fast and simple method.

Avalia??o da viabilidade de sementes de aveia preta pelo teste de tetrazólio
Souza, Camila Ribeiro de;Ohlson, Osvaldo de Castro;Panobianco, Maristela;
Revista Brasileira de Sementes , 2009, DOI: 10.1590/S0101-31222009000300006
Abstract: black oats show dormancy in recently harvested seeds, but it is overcome during the storage period; as a consequence, rapid tests are important to determine their viability. the objective of this study was to evaluate different procedures to perform the tetrazolium test in black oat seeds. four seed lots of 'embrapa 29' ('garoa') were used to test the following protocols of the tetrazolium assay: a) hydration between wet paper towels and soaked inwater for 18 h at 20 oc; b) color development for 2 h, on paper moistened with reagent and direct immersion in the reagent; c) tetrazolium solution at 0.1 %, 0.5 % and 1.0 %. two types of seed preparation were studied: seeds were cut longitudinally through the embryo, and one half was immersed in tetrazolium solution at 30 oc or both halves were placed on filter paper moistened with tetrazolium solution, at 40 oc. results showed that the tetrazolium test is promising for rapid determination of seed viability; soaking in water (18 h, at 20 oc), followed by the color development for 2 h on filter paper moistened in a 0.5 % or 1.0 % tetrazolium solution, at 40 oc, was identified as the best procedure.
Avalia??o da viabilidade de sementes de aveia branca pelo teste de tetrazólio
Souza, Camila Ribeiro de;Ohlson, Osvaldo de Castro;Panobianco, Maristela;
Revista Brasileira de Sementes , 2010, DOI: 10.1590/S0101-31222010000400020
Abstract: white-oat seed shows dormancy when recently harvested, but this is normally overcome after storage, which sometimes makes the germination test for evaluating their viability unreliable. the objective of this study was to evaluate different methodologies for performing the tetrazolium test with white-oat seeds, to rapidly determine their viability. five white-oat seed lots of "louise" and "iac-7" cultivars were used to test the following procedures for the tetrazolium assay: a) hydration between moistened paper towels and in soaked water at 20 °c, for 18 h; b) coloring for 2 h, on paper moistened with reagent and direct immersion in the reagent; c) tetrazolium solutions of 0.1%, 0.5% and 1.0%. there were two types of seed preparation: seeds were cut longitudinally through the embryo, and one half was immersed in tetrazolium solution at 30 °c or both halves were placed on filter paper moistened with tetrazolium solution, at 40 °c. results showed that the tetrazolium test is promising for the rapid determination of seed viability, with hydration between paper (18 h, at 20 °c), and by the coloring on moistened paper (2 h, at 40 °c) with 1% tetrazolium solution.
Lymphedema in the Mastectomy Postoperative Period: An Integrative Literature Review  [PDF]
Ana Fátima Carvalho Fernandes, Glécya Oliveira Vidal, Camila Brasil Moreira, Tiago Barreto de Castro e Silva, Paula Natasha Rodrigues Valentim, Míria Concei??o Lavinas Santos
Advances in Breast Cancer Research (ABCR) , 2013, DOI: 10.4236/abcr.2013.24025

Aims and Objectives: To analyze the evidence available in the literature on the stages during which upper limb lymphedema after mastectomy occurs. Background: Among the adverse effects of breast cancer treatment, lymphedema is the most prevalent. Design: Integrative literature review. Methods: The Latin American and Caribbean Literature on Health Sciences (Literatura Latino-Americana e do Caribe em Ciências da Saúde—LILACS), PubMed, and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases were used to select the pertinent studies. The identification data for these studies were summarized, and their methodological features and results were extracted. Results: Regarding the time elapsed since surgery, the highest prevalence of lymphedema corresponded to the late postoperative period, and regarding its severity, mild lymphedema was the most prevalent form. The prevalence was also the highest among the women who were subjected to radical mastectomy and radiotherapy. Conclusions: Many women who are undergoing treatment for breast cancer use strategies for the prevention and control of lymphedema of the upper limb following mastectomy. Relevance to Clinical Practice: The findings of the present study might inform future studies aiming to assess strategies that can be started in the immediate and late postoperative stages to detect lymphedema early and prevent the increase of its prevalence during the late postoperative period after mastectomy.

Validation of commonly used reference genes for sleep-related gene expression studies
Kil S Lee, Tathiana A Alvarenga, Camila Guindalini, Monica L Andersen, Rosa MRPS Castro, Sergio Tufik
BMC Molecular Biology , 2009, DOI: 10.1186/1471-2199-10-45
Abstract: Neither TSD nor PSD affected the expression stability of all tested genes in both tissues indicating that b-actin, B2M, GAPDH and HPRT are appropriate reference genes for the sleep-related gene expression studies. In order to further verify these results, the relative expression of brain derived neurotrophic factor (BDNF) and glycerol-3-phosphate dehydrogenase1 (GPD1) was evaluated in brain and blood, respectively. The normalization with each of four reference genes produced similar pattern of expression in control and sleep deprived rats, but subtle differences in the magnitude of expression fold change were observed which might affect the statistical significance.This study demonstrated that sleep deprivation does not alter the expression stability of commonly used reference genes in brain and blood. Nonetheless, the use of multiple reference genes in quantitative RT-PCR is required for the accurate results.Sleep is a complex phenotype that involves several neurochemical and physiological processes. It is known to perform restorative functions and to facilitate memory consolidation [1,2]. Although sleep is essential for overall well-being and optimal physical and psychological functioning, chronic sleep restriction is frequently experienced due to contemporary social and domestic responsibilities, medical conditions and sleep disorders [3]. Sleep restriction alters sleep architecture primarily by decreasing the duration of the REM (rapid eye movement) sleep stage, also known as paradoxical sleep (PS) [3]. Therefore, approaches that reduce or abolish PS have been used to simulate chronic sleep restriction.Persistent sleep debt impairs neurobehavioral functions [3,4] and increases the risk for chronic diseases such as cardiovascular disorders [5], erectile dysfunction [6] and diabetes [7]. Thus, careful characterization of the effects of sleep deprivation not only improves our knowledge about the complex sleep process but also contributes to elucidation of the mecha
Sentimentos de familiares acompanhantes de adultos face ao processo de hospitaliza??o
Beuter, Margrid;Brondani, Cecília Maria;Szareski, Charline;Cordeiro, Franciele Roberta;Roso, Camila Castro;
Escola Anna Nery , 2012, DOI: 10.1590/S1414-81452012000100018
Abstract: the following research was conducted aiming to describe the feelings of family companions during the hospitalization of family members and identify the strategies adopted by the nursing team to help the family companion in coping with the hospitalization in an internal medicine unit. this is a qualitative study, using the creative and sensitive method for the production of data through the "almanac" dynamic. data were subjected to french discourse analysis emerging two topics: feeling of family companions from the hospitalization process and strategies of nursing team to help family companion in coping patient's hospitalization. identify the feelings of loneliness, abandonment, apprehension, desperation, and impotence. strategies like praying and support groups, the use of clear and cohesive communication and the establishment of a supportive relationship with a family companion will contribute in overcoming those feelings.
Effect of drying on the reproducibility of DIAGNOdent to detect caries-like lesions
Pinelli, Camila;Loffredo, Leonor de Castro Monteiro;Serra, M?nica Campos;
Brazilian Dental Journal , 2010, DOI: 10.1590/S0103-64402010000500005
Abstract: the aim of this study was to verify the drying effect on the reproducibility of diagnodent (dd) devices to detect caries-like lesions. three areas were created in each of the 34 bovine incisors: sound (s), demineralized (de) and remineralized (re). one examiner measured each area with two dd devices (denominated x and y), twice under humid, and twice under dry condition. intra-rater agreement according each device and inter-device agreement were estimated by kappa statistics (k). intra-rater agreement for device y was substantial under humid (k de=0.68 and k re+s=0.68) and dry condition (k de=0.64 and k re+s=0.67). for device x, it was substantial under humid condition (k de=0.57 and k re+s=0.49), and it was almost perfect after air drying (k de=1.0 and kre+s=1.0). inter-device agreement was slight (k =0.17) under humid condition, and it was substantial under dry condition (k =0.62). as reproducibility increased under dry condition, drying is advised to detect caries-like lesions on free smooth surfaces when different devices are used.
Triagem neonatal para hemoglobinopatias: experiência de um ano na rede de saúde pública do Rio Grande do Sul, Brasil
Sommer, Camila K.;Goldbeck, Ana Stela;Wagner, Sandrine C.;Castro, Simone M.;
Cadernos de Saúde Pública , 2006, DOI: 10.1590/S0102-311X2006000800019
Abstract: hemoglobinopathies are the most common inherited disorders in humans; the most frequent are hemoglobins s and c (hb s and hb c). studies in brazil show the high prevalence of hb s and hb c heterozygotes, indicating the need for diagnosis to allow medical care and suitable genetic counseling. this study evaluates the prevalence of hemoglobin patterns in different areas of rio grande do sul state, brazil, using neonatal data from the public health system. blood samples from 117,320 newborns, obtained by heel stick, and 2,389 blood samples from parents of newborns, obtained by venopuncture, were submitted to ief and hplc. among the newborns, 1,629 (1.4%) showed abnormal hemoglobin patterns: 1,342 fas; 225 fac; 45 fad; 2 fsc; 1 fs and 26 variant hemoglobin heterozygotes. we conclude that the methods used are able to identify a broad variety of hemoglobin patterns with high specificity and sensitivity. the information is of paramount importance for transmitting knowledge in the public health field, besides facilitating planning and resource allocation.
Testes de envelhecimento acelerado e deteriora??o controlada na avalia??o do vigor de aquênios de girassol
Braz, Madelon Rodrigues Sá;Barros, Camila Santos;Castro, Fernanda Pereira;Rossetto, Claudia Antonia Vieira;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000700009
Abstract: the vigour tests were developed to detect differences of seeds lots owing to limitations the germination test. this study was conducted to compare different procedures of the accelerated aging and controlled deterioration tests to evaluate sunflowers seed vigour. five lots of sunflower achenes (seeds with pericarp) cv. catissol 01 were submitted to the water content test and to the evaluation of physiological quality using by germination and vigour test (first count, cold test, electrical conductivity, seedling emergence and speed of emergence index, accelerated aging with tradicional system and satured solution of nacl, at 42°c for 48, 72, 96 hours and controlled deterioration with 15, 20, 25% water content for 48, 72, 96 hours at 42°c). the results showed that the accelerated aging test with use of satured solution of nacl for 96 hours was efficient to classify the sunflowers achenes lots. the combinations of 20% water in the achenes for 72 hours and the combination of 25% water in the achenes for 48 and 72 hours was efficient to classify the sunflowers achenes lots.
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