995 resultados para Detecção e diagnóstico de avarias
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The goals of this study are to identify the potencialities avaiable in elementary public schools for the development of an educational process wich includes environmental issues helpping to find its integration with university in order to contribuite raises teaching levels for a better comprehension of regional environmental problems. Research data were collected through questionnaires and interviews with geography teachers analyising theirs activities and perspectives on the environmental crisis and environmental education. The study also offers sugestions for the devellopment of interdisciplinaires programs trying to contibute for the construction of citizenship showing the importance of better comprehension from environmental problems which includes physical, economics, social, political and cultural aspects.
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Optical chemical sensors with detection in the near and mid infrared region are reviewed. Fundamental concepts of infrared spectroscopy and optical chemical sensors are briefly described, before presenting some aspects on optical chemical sensors, such as synthesis of NIR and IR reagents, preparation of new materials as well as application in determinations of species of biological, industrial and environmental importance.
Mtodos probabilstico e determinstico para diagnóstico da necessidade de subsolagem de solos agrcolas
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This paper presents two techniques to evaluate soil mechanical resistance to penetration as an auxiliary method to help in a decision-making in subsoiling operations. The decision is based on the volume of soil mobilized as a function of the considered critical soil resistance to penetration in each case. The first method, probabilistic, uses statistical techniques to define the volume of soil to be mobilized. The other method, deterministic, determines the percentage of soil to be mobilized and its spatial distribution. Both cases plot the percentage curves of experimental data related to the soil mechanical resistance to penetration equal or larger to the established critical level and the volume of soil to be mobilized as a function of critical level. The deterministic method plots showed the spatial distribution of the data with resistance to penetration equal or large than the critical level. The comparison between mobilized soil curves as a function of critical level using both methods showed that they can be considered equivalent. The deterministic method has the advantage of showing the spatial distribution of the critical points.
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The study describes the comprehension of concepts about sexuality by youths diagnosed with intellectual deficiency, during classes on sexual education. The analysis of selected episodes from video transcriptions of five classes (Human Body, Kiss, Flirting, Coitus, Condom/STD) showed: the appropriation and understanding of concepts, partial difficulties of comprehension, and inhibition. The analysis of the transcripts indicated that all students were attentive to the classes, participated in the proposed tasks, and answered the questions. The observed signs of inhibition and the expression of values were similar to those observed in other youngsters, indicating the appropriation of culturally established values. The obtained evidences contrast with mythical visions related to sexuality in these youngsters, and suggest more studies about their competences.
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The aim of this study was to determine the effectiveness and reliability of laser fluorescence measurements in relation to occlusal caries diagnosis. DIAGNOdent 2095 (Kavo, Biberach, Germany), which has been developed especially for caries diagnosis, was utilized. Five (5) teeth were examined in the pilot test; after that, ten (10) teeth were examined in order to calibrate both examiners. Data were obtained from 66 teeth (36 molars and 30 premolars), totalizing 144 sites identified through photographs of the occlusal surfaces. Reproducibility was evaluated in 10 teeth. The interexaminer Spearman correlation (r) was 0.89 and the intra-examiner, 0.93 and 0.97 (examiner A and B, respectively). Validation was carried out by histological examination (stereomicroscope). For the two examiners the sensitivity of the device was relatively high, varying from 0.81 to 1.00, while specificity varied according to which validation criterion was used (0.77 - 0.86: enamel lesion / 0.52 - 0.59: dentin lesion). It was concluded that DIAGNodent presented good capacity of identifying any alteration of the dental surface, nevertheless it presents the disadvantage of accomplishing many false-positive diagnosis when the validation criterion is dentin lesion.
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FISH has been used as a complement to classical cytogenetics in the detection of mosaicism in sex chromosome anomalies. The aim of this study is to describe three cases in which the final diagnosis could only be achieved by FISH. Case 1 was an 8-year-old 46,XY girl with normal female genitalia referred to our service because of short stature. FISH analysis of lymphocytes with probes for the X and Y centromeres identified a 45,X/46,X,idic(Y) constitution, and established the diagnosis of Turner syndrome. Case 2 was a 21-month-old 46,XY boy with genital ambiguity (penile hypospadias, right testis, and left streak gonad). FISH analysis of lymphocytes and buccal smear identified a 45,X/46,XY karyotype, leading to diagnosis of mixed gonadal dysgenesis. Case 3 was a 47,XYY 19-year-old boy with delayed neuromotor development, learning disabilities, psychological problems, tall stature, small testes, elevated gonadotropins, and azoospermia. FISH analysis of lymphocytes and buccal smear identified a 47,XYY/48,XXYY constitution. Cases 1 and 2 illustrate the phenotypic variability of the 45,X/46,XY mosaicism, and the importance of detection of the 45,X cell line for proper management and follow-up. In case 3, abnormal gonadal function could be explained by the 48,XXYY cell line. The use of FISH in clinical practice is particularly relevant when classical cytogenetic analysis yields normal or uncertain results in patients with features of sex chromosome aneuploidy. Arq Bras Endocrinol Metab. 2012;56(8):545-51
Contribuio da tomografia computadorizada no diagnóstico e no estudo ps-operatrio dos tumores selares
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The computerized tomography (C.T.) of 18 pacients with sellar tumours were analysed. The C.T. made before surgery in 6 cases was positive in 3 and the type of tumour suggested by C.T. was confirmed in 3. Twelve pacients had a C.T. investigation after surgery and the examination suggest recurrent tumour in 5. Two of these were re-operated. One pacient with colesteatoma had the recurrent tumour verified by surgery and the other, with a pituitary adenoma during re-operation was noted only cicatricial tissue at sellar region.
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Universidade Estadual de Campinas . Faculdade de Educao Fsica
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Algumas ms ocluses exigem do ortodontista capacidade de diagnóstico para decidir pela melhor maneira de tratar o paciente. O objetivo dos autores deste artigo foi apresentar casos clnicos e discutir alguns elementos de diagnóstico utilizados na elaborao do plano de tratamento, auxiliando na deciso de extrair dentes. Foi dada nfase em cada elemento de diagnóstico: aspectos relacionados cooperao, discrepncia de modelo, discrepncia cefalomtrica e perfil facial, idade esqueltica (crescimento) e relaes anteroposteriores, assimetrias dentrias, padro facial e patologias. Sugere-se que a associao dos aspectos citados importante para a deciso correta. Todavia, algumas vezes, uma caracterstica, por si s, pode definir o plano de tratamento.
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PURPOSE: Juvenile idiopathic arthritis (JIA) has unknown etiology, and the involvement of the temporomandibular joint (TMJ) is rare in the early phase of the disease. The present article describes the use of computed tomography (CT) and magnetic resonance (MRI) images for the diagnosis of affected TMJ in JIA. CASE DESCRIPTION: A 12-year-old, female, Caucasian patient, with systemic rheumathoid arthritis and involvement of multiple joints was referred to the Imaging Center for TMJ assessment. The patient reported TMJ pain and limited opening of the mouth. The helical CT examination of the TMJ region showed asymmetric mandibular condyles, erosion of the right condyle and osteophyte-like formation. The MRI examination showed erosion of the right mandibular condyle, osteophytes, displacement without reduction and disruption of the articular disc. CONCLUSION: The disorders of the TMJ as a consequence of JIA must be carefully assessed by modern imaging methods such as CT and MRI. CT is very useful for the evaluation of discrete bone changes, which are not identified by conventional radiographs in the early phase of JIA. MRI allows the evaluation of soft tissues, the identification of acute articular inflammation and the differentiation between pannus and synovial hypertrophy.
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The vinasse, awaste produced in the proportion of 13 liters for each liter of alcohol. It has a high potential of polluting groundwater and superficial water resources, changes the soil behaviour and can also develop sanilization problems. This work aims to evaluate the efficiency of the DC-resistivity method in detecting and mapping anomalies caused by inappropriate disposal of vinasse in an inactive infiltration tank located at Sep-Tiaraj settlement of landless agricultural laborers in the Ribeiro Preto region. Besides, as secondary goals, this work aims to characterize the type of anomaly residue as well as to diagnose its influence inside and outside of the limits of the tank. Eleven electrical resistivity tomography profiles were carried out with the dipole-dipole array, 10m of dipoles length and 5 leveis of investigation The geophysical survey enabled us to conclude that the DC-resistivity method is appropriate for mapping the contamination plume caused by intense vinasse disposal and its influence. It enabled also to conclude that the contamination exceeds the tank limits. The vinasse influence can be characterized by low resistivity values between 10 Ohm.m and 90 Ohm.m and its behavior can be compared with the one of the chorume, which is also conductive.
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OBJETIVO: Relatar caso ilustrativo de doena granulomatosa crnica cujo diagnóstico ocorreu durante o aparecimento do primeiro episdio infeccioso, colaborando com a iniciativa do Brazilian Group for Immunodeficiency para a sensibilizao do pediatra geral em relao ao diagnóstico precoce das imunodeficincias primrias, o que est associado a melhor qualidade de vida e maior sobrevida desses indivduos. DESCRIO DE CASO: Paciente do sexo masculino, 39 dias de vida, admitido em pronto-socorro peditrico por febre alta h cinco dias e irritabilidade. No dia seguinte, observou-se abscesso cervical, isolando-se Staphylococcus aureus comunitrio. Durante a internao, ocorreram outros abscessos superficiais e em cadeias ganglionares profundas, alm de resposta lenta aos antimicrobianos. Solicitou-se investigao para imunodeficincias, que confirmou a hiptese de doena granulomatosa crnica por quantificao dos nions superxido e teste de reduo do nitrobluetetrazolio. Paciente foi encaminhado a servio especializado, no qual identificou-se doador de medula ssea compatvel, realizando-se o transplante seis meses aps o diagnóstico. Quatro meses aps o transplante, ocorreu normalizao do burst oxidativo, indicando sucesso. COMENTRIOS: O paciente mostrou apresentao tpica da doena, o que permitiu seu diagnóstico por pediatras gerais j na primeira infeco, tendo como consequncia o acompanhamento por especialistas em imunodeficincias primrias, a introduo da profilaxia antimicrobiana e a procura bem sucedida de doador de medula HLA-compatvel.
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The study assessed heavy metal concentrations in the tissue samples of Corbiculafluminea, by ICP-OES. In the tissues, average levels of 23.99 g/g of Cu, 144.21 g/g of Zn, 0.71 g/g of Cd, 7.10 g/g of Cr and 2.41 g/g of Pb were detected ahowing that this last value is high and above the ANVISA reference (2.00 g/g) for fish and other products. The results suggest that natural processes occuring in the Ribeira de Iguape River are not sufficient for purification so that metals remain in the water and can accumulate in the trophic chain.
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A modelagem da estrutura de dependncia espacial pela abordagem da geoestatstica fundamental para a definio de parmetros que definem esta estrutura, e que so utilizados na interpolao de valores em locais no amostrados pela tcnica de krigagem. Entretanto, a estimao de parmetros pode ser muito afetada pela presena de observaes atpicas nos dados amostrados. O desenvolvimento deste trabalho teve por objetivo utilizar tcnicas de diagnóstico de influncia local em modelos espaciais lineares gaussianos, utilizados em geoestatstica, para avaliar a sensibilidade dos estimadores de mxima verossimilhana e mxima verossimilhana restrita na presena de dados discrepantes. Estudos com dados experimentais mostraram que tanto a presena de valores atpicos como de valores considerados influentes, pela anlise de diagnóstico, pode exercer forte influncia nos mapas temticos, alterando, assim, a estrutura de dependncia espacial. As aplicaes de tcnicas de diagnóstico de influncia local devem fazer parte de toda anlise geoestatstica a fim de garantir que as informaes contidas nos mapas temticos tenham maior qualidade e possam ser utilizadas com maior segurana pelo agricultor.
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O objetivo deste trabalho foi medir curvas de sensibilidade ao contraste de 10 crianas ouvintes e de 10 crianas com surdez pr-lingual, de 7 a 12 anos, utilizando frequncias radiais circularmente concntricas (FSCr) de 0,25-2,0 cpg em nveis baixos de luminncia (0,7 cd/m). Todos os participantes apresentavam acuidade visual normal e estavam livres de doenas oculares identificveis. A FSCr foi medida com o mtodo psicofsico da escolha forada. Os resultados mostraram sensibilidade mxima na faixa de frequncia radial de 0,25 cpg para os dois grupos. Os resultados mostraram ainda diferenas significantes entre as curvas de FSCr de crianas ouvintes e de crianas com surdez pr-lingual. Isto , as crianas ouvintes precisaram de menos contraste do que as crianas surdas para detectar as frequncias radiais. Esses resultados sugerem que, em nveis baixos de luminncia, a FSCr das crianas ouvintes foi melhor do que a das crianas com surdez pr-lingual.