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‣ Caracterização epidemiológica da malária autóctone do Espírito Santo; Study of the epidemiologic aspects of the indigenous malaria in Espírito Santo State

Cerutti Junior, Crispim
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 10/04/2007 Português
Relevância na Pesquisa
57.2726%
Os diversos aspectos da cadeia de transmissão da malária autóctone são importantes para o estabelecimento de estratégias de intervenção. Entre abril de 2001 e março de 2004, 65 pacientes e 1.777 habitantes foram avaliados em nove municípios da região montanhosa do Espírito Santo. Foram realizados: gota espessa, esfregaço fino, PCR Multiplex, reação de imunofluorescência indireta (IFI) para detecção de anticorpos contra antígenos de estágios eritrocitários de Plasmodium e ELISA para detecção de anticorpos contra peptídeos sintetizados a partir da porção repetitiva da proteína circunsporozoíta (CSP) das variantes de P. vivax e do P. malariae. Foram capturados anofelíneos no peridomicílio, com pesquisa, por PCR Multiplex, de DNA de Plasmodium. O mesmo foi pesquisado também em alguns símios locais. Os pacientes tinham 35,11 + 16 anos, em média. A maioria era do gênero masculino (51 ou 78,5%), 42 (64,6%) residiam em área rural, 23 (35,4%) eram agricultores e oito (12,3%) estudantes. Não houve viagens relevantes. Sessenta e dois (95,4%) nunca haviam tido malária. Vinte e quatro (36,9%) declararam ter entrado na mata. Predominaram a febre, a cefaléia e os calafrios. A febre era episódica em 63 (96,9%)...

‣ Establishing a stem cell culture laboratory for clinical trials

Sekiya,Elíseo Joji; Forte,Andresa; Kühn,Telma Ingrid Borges de Bellis; Janz,Felipe; Bydlowski,Sérgio Paulo; Alves,Adelson
Fonte: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular Publicador: Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2012 Português
Relevância na Pesquisa
57.475107%
Adult stem/progenitor cells are found in different human tissues. An in vitro cell culture is needed for their isolation or for their expansion when they are not available in a sufficient quantity to regenerate damaged organs and tissues. The level of complexity of these new technologies requires adequate facilities, qualified personnel with experience in cell culture techniques, assessment of quality and clear protocols for cell production. The rules for the implementation of cell therapy centers involve national and international standards of good manufacturing practices. However, such standards are not uniform, reflecting the diversity of technical and scientific development. Here standards from the United States, the European Union and Brazil are analyzed. Moreover, practical solutions encountered for the implementation of a cell therapy center appropriate for the preparation and supply of cultured cells for clinical studies are described. Development stages involved the planning and preparation of the project, the construction of the facility, standardization of laboratory procedures and development of systems to prevent cross contamination. Combining the theoretical knowledge of research centers involved in the study of cells with the practical experience of blood therapy services that manage structures for cell transplantation is presented as the best potential for synergy to meet the demands to implement cell therapy centers.

‣ Extensive Cross-Contamination of Specimens with Mycobacterium tuberculosis in a Reference Laboratory

de C. Ramos, Marcelo; Soini, Hanna; Roscanni, Glaucia C.; Jaques, Monica; Villares, Maria C.; Musser, James M.
Fonte: American Society for Microbiology Publicador: American Society for Microbiology
Tipo: Artigo de Revista Científica
Publicado em /04/1999 Português
Relevância na Pesquisa
47.51216%
A striking increase in the numbers of cultures positive for Mycobacterium tuberculosis was noticed in a mycobacterial reference laboratory in Campinas, Sao Paulo State, Brazil, in May 1995. A contaminated bronchoscope was the suspected cause of the increase. All 91 M. tuberculosis isolates grown from samples from patients between 8 May and 18 July 1995 were characterized by spoligotyping and IS6110 fingerprinting. Sixty-one of the 91 isolates had identical spoligotype patterns, and the pattern was arbitrarily designated S36. The 61 specimens containing these isolates had been processed and cultured in a 21-day period ending on 1 June 1995, but only 1 sample was smear positive for acid-fast bacilli. The patient from whom this sample was obtained was considered to be the index case patient and had a 4+ smear-positive lymph node aspirate that had been sent to the laboratory on 10 May. Virtually all organisms with spoligotype S36 had the same IS6110 fingerprint pattern. Extensive review of the patients’ charts and investigation of laboratory procedures revealed that cross-contamination of specimens had occurred. Because the same strain was grown from all types of specimens, the bronchoscope was ruled out as the outbreak source. The most likely source of contamination was a multiple-use reagent used for specimen processing. The organism was cultured from two of the solutions 3 weeks after mock contamination. This investigation strongly supports the idea that M. tuberculosis grown from smear-negative specimens should be analyzed by rapid and reliable strain differentiation techniques...

‣ Paraformaldehyde for Surface Sterilization and Detoxification

Taylor, Larry A.; Barbeito, Manuel S.; Gremillion, Gardner G.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /04/1969 Português
Relevância na Pesquisa
47.385356%
Paraformaldehyde powder, depolymerized by heat, produced formaldehyde gas that was effective in sterilizing laboratory rooms, a mobile laboratory trailer, various surfaces, fiberglass filter medium, and specialized laboratory equipment. A sporulating and nonsporulating strain of bacteria, a virus, and a bacterial toxin were used as test agents. The dissemination procedures and equipment, the assay techniques, and the facilities and equipment sterilized were described.

‣ Diagnostic Accuracy of In-House PCR for Pulmonary Tuberculosis in Smear-Positive Patients: Meta-Analysis and Metaregression▿ †

Greco, S.; Rulli, M.; Girardi, E.; Piersimoni, C.; Saltini, C.
Fonte: American Society for Microbiology (ASM) Publicador: American Society for Microbiology (ASM)
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
47.037373%
In-house PCR (hPCR) could speed differential diagnosis between tuberculosis (TB) and nontuberculous mycobacterial disease in patients with positive smears and pulmonary infiltrates, but its reported accuracy fluctuates across studies. We conducted a systematic review and meta-analysis of hPCR sensitivity and specificity for smear-positive TB diagnosis, using culture as the reference standard. After searching English language studies in MEDLINE and EMBASE, we estimated cumulative accuracy by means of summary receiver operating characteristic analysis. The possible influence of hPCR procedures and study methodological features on accuracy was explored by univariate metaregression, followed by multivariate adjustment of items selected as significant. Thirty-five articles (1991 to 2006) met the inclusion criteria. The pooled estimates of the diagnostic odds ratio, sensitivity, and specificity (random-effect model) were, respectively, 60 (confidence interval [CI], 29 to 123), 0.96 (CI, 0.95 to 0.97), and 0.81 (CI, 0.78 to 0.84), but significant variations (mainly in specificity) limit their clinical applicability. The quality of the reference test, the detection method, and real-time PCR use explained some of the observed heterogeneity. Probably due to the limited study power of our meta-analysis and to the wide differences in both laboratory techniques and methodological quality...

‣ Development and Implementation of Multimedia Content for an Electronic Learning Course on Rodent Surgery

Baran, Szczepan W; Johnson, Elizabeth J; Kehler, James; Hankenson, F Claire
Fonte: American Association for Laboratory Animal Science Publicador: American Association for Laboratory Animal Science
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
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The development of new rodent models of human disease and advances in surgical equipment and technologies have increased the demand for expertise in rodent surgery. Because of the limited availability of rodent surgical training courses, electronic (e-) learning is presented as an alternative to in-person education and as a means to hone the expertise of current surgeons in biomedical research, similar to e-learning applications for human surgery training. Translating this model to the biomedical research field provides participants with an opportunity to train themselves on rodent surgical techniques prior to operating on live models. An e-learning rodent surgery course was incorporated into a training class of undergraduate (n = 39) and graduate (n = 12) laboratory animal students, and a portion of the course was presented to laboratory animal professionals (n = 15). The effectiveness of the method was evaluated using written examination and postcourse surveys. The exam data demonstrated that the e-learning course transferred knowledge comparable to a lecture course on surgery that was presented in-person. Students responded favorably to videos, step-by-step photographs of surgical procedures, and the ready accessibility of the course. Critiques included the need to improve video resolution and quality of the voice-overs. These results support the continued development and implementation of electronic rodent surgical technique courses for use in laboratory animal and biomedical research communities.

‣ Laboratory Reptile Surgery: Principles and Techniques

Alworth, Leanne C; Hernandez, Sonia M; Divers, Stephen J
Fonte: American Association for Laboratory Animal Science Publicador: American Association for Laboratory Animal Science
Tipo: Artigo de Revista Científica
Português
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47.660312%
Reptiles used for research and instruction may require surgical procedures, including biopsy, coelomic device implantation, ovariectomy, orchidectomy, and esophogostomy tube placement, to accomplish research goals. Providing veterinary care for unanticipated clinical problems may require surgical techniques such as amputation, bone or shell fracture repair, and coeliotomy. Although many principles of surgery are common between mammals and reptiles, important differences in anatomy and physiology exist. Veterinarians who provide care for these species should be aware of these differences. Most reptiles undergoing surgery are small and require specific instrumentation and positioning. In addition, because of the wide variety of unique physiologic and anatomic characteristics among snakes, chelonians, and lizards, different techniques may be necessary for different reptiles. This overview describes many common reptile surgery techniques and their application for research purposes or to provide medical care to research subjects.

‣ Establishing a stem cell culture laboratory for clinical trials

Sekiya, Elíseo Joji; Forte, Andresa; Kühn, Telma Ingrid Borges de Bellis; Janz, Felipe; Bydlowski, Sérgio Paulo; Alves, Adelson
Fonte: Associação Brasileira de Hematologia e Hemoterapia Publicador: Associação Brasileira de Hematologia e Hemoterapia
Tipo: Artigo de Revista Científica
Publicado em //2012 Português
Relevância na Pesquisa
47.26252%
Adult stem/progenitor cells are found in different human tissues. An in vitro cell culture is needed for their isolation or for their expansion when they are not available in a sufficient quantity to regenerate damaged organs and tissues. The level of complexity of these new technologies requires adequate facilities, qualified personnel with experience in cell culture techniques, assessment of quality and clear protocols for cell production. The rules for the implementation of cell therapy centers involve national and international standards of good manufacturing practices. However, such standards are not uniform, reflecting the diversity of technical and scientific development. Here standards from the United States, the European Union and Brazil are analyzed. Moreover, practical solutions encountered for the implementation of a cell therapy center appropriate for the preparation and supply of cultured cells for clinical studies are described. Development stages involved the planning and preparation of the project, the construction of the facility, standardization of laboratory procedures and development of systems to prevent cross contamination. Combining the theoretical knowledge of research centers involved in the study of cells with the practical experience of blood therapy services that manage structures for cell transplantation is presented as the best potential for synergy to meet the demands to implement cell therapy centers.

‣ Comparison of Surgical Methods of Transient Middle Cerebral Artery Occlusion between Rats and Mice

LEE, Seunghoon; HONG, Yunkyung; PARK, Sookyoung; LEE, Sang-Rae; CHANG, Kyu-Tae; HONG, Yonggeun
Fonte: The Japanese Society of Veterinary Science Publicador: The Japanese Society of Veterinary Science
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
47.03188%
Rodent models of focal cerebral ischemia that do not require craniotomy have been developed by intraluminal suture middle cerebral artery occlusion (MCAo). Mouse MCAo models have been widely used and extended to genetic studies of cell death or recovery mechanisms. Therefore, we compared surgery-related parameters and techniques between such rats and mice. In rodent MCAo models, has to be considered body temperature during the operative period, as well as the need for the use of a standardized tip in terms of the outer diameter of probes. Induction of focal cerebral ischemia was measured by neurological dysfunction parameters. Our methods could induce stable moderate-severity ischemic brain injury models and histological alteration at 24 hr after MCAo surgery. Moreover approximately 80% (rats) and 85% (mice) survival ratios were shown indicating with model engineering success. Finally, we described and compared major parameters between rats and mice, including probe size, thread insert length, operation and occlusion periods, and differences in the procedures.

‣ Biological Risks and Laboratory-Acquired Infections: A Reality That Cannot be Ignored in Health Biotechnology

Coelho, Ana Cláudia; García Díez, Juan
Fonte: Frontiers Media S.A. Publicador: Frontiers Media S.A.
Tipo: Artigo de Revista Científica
Publicado em 28/04/2015 Português
Relevância na Pesquisa
57.867275%
Advances and research in biotechnology have applications over a wide range of areas, such as microbiology, medicine, the food industry, agriculture, genetically modified organisms, and nanotechnology, among others. However, research with pathogenic agents, such as virus, parasites, fungi, rickettsia, bacterial microorganisms, or genetic modified organisms, has generated concern because of their potential biological risk – not only for people, but also for the environment due to their unpredictable behavior. In addition, concern for biosafety is associated with the emergence of new diseases or re-emergence of diseases that were already under control. Biotechnology laboratories require biosafety measures designed to protect their staff, the population, and the environment, which may be exposed to hazardous organisms and materials. Laboratory staff training and education is essential, not only to acquire a good understanding about the direct handling of hazardous biological agents but also knowledge of the epidemiology, pathogenicity, and human susceptibility to the biological materials used in research. Biological risk can be reduced and controlled by the correct application of internationally recognized procedures such as proper microbiological techniques...

‣ Preimplantation genetic diagnosis: technical and ethical considerations.; Diagnóstico genético pré-implantação: aspetos técnicos e considerações éticas.

Oliva Teles, Natália; Serviço de Bioética e Ética Médica, Faculdade de Medicina da Universidade do Porto, Centro de Genética Jacinto Magalhães, INSA, I.P. Porto, Portugal.
Fonte: Ordem dos Médicos Publicador: Ordem dos Médicos
Tipo: info:eu-repo/semantics/article; article; article; info:eu-repo/semantics/publishedVersion Formato: application/pdf
Publicado em 20/06/2012 Português
Relevância na Pesquisa
47.91957%
Following the advances in the techniques of medically assisted reproduction (ART), 1990 has seen the first born child after the development of pre-implantation genetic diagnosis. In this analysis embryos are tested for the presence of genetic anomalies at three to five days after fertilization and only unaffected embryos are transferred to the maternal uterus. The technique offers good prospects to couples at risk for conventional prenatal diagnosis. It is particularly useful where ART techniques are necessary, in which early embryo selection avoids later termination of pregnancy. In Portugal the application of laws concerning regulation of medically assisted reproduction in 2008 has clarified and formalised the medical and laboratory procedures and in some cases fundamentally changed them, particularly in the requirement to cryopreserve all high quality non-transferred embryos and in specifying conditions in which embryo experimentation may be permitted.; Following the advances in the techniques of medically assisted reproduction (ART), 1990 has seen the first born child after the development of pre-implantation genetic diagnosis. In this analysis embryos are tested for the presence of genetic anomalies at three to five days after fertilization and only unaffected embryos are transferred to the maternal uterus. The technique offers good prospects to couples at risk for conventional prenatal diagnosis. It is particularly useful where ART techniques are necessary...

‣ The influence of different surface and heat treatments on the biaxial flexural strength of veneering ceramics for zirconia and strength reliability and mode of fracture of veneering ceramics

Carracho, José Fausto, 1975-
Fonte: Universidade de Lisboa Publicador: Universidade de Lisboa
Tipo: Tese de Doutorado
Publicado em //2011 Português
Relevância na Pesquisa
47.439653%
Tese de doutoramento, Medicina Dentária (Reabilitação Oral), Universidade de Lisboa, Faculdade de Medicina Dentária, 2011; New processing techniques have facilitated the use of Zirconia core materials in all-ceramic dental prostheses. Zirconia has many potential advantages compared to existing core materials; however its performance when layered with veneering ceramics has not been clearly evaluated. Moreover the veneering ceramics used with Zirconia may be ground, polished or glazed during laboratory procedures and/or clinical adjustments. These treatments may affect their strength by introducing microscopic flaws and defects. The purposes of this study were to investigate the effects of surface treatments on the mean biaxial flexural strength of three feldspathic veneering ceramics used to layer Zirconia cores: NobelRondoTM Zirconia veneer ceramic (Nobel BiocareTM AB, Sweden), LavaTM Ceram veneer ceramic (3MTM, ESPETM, Germany), and Vita® VM®9 veneer ceramic (Vita®, Zahnfabrick, Germany) and compare the mean biaxial flexural strength, its reliability, and mode of fracture of bilayered Zirconia discs veneered with the three feldspathic veneering ceramics. For the first part of the study one hundred and eighty monolithic disc specimens (12.7 mm x 2.2mm)...

‣ Designing an undergraduate laboratory course in general chemistry

Vianna,José F.; Sleet,R. J.; Johnstone,A. H.
Fonte: Sociedade Brasileira de Química Publicador: Sociedade Brasileira de Química
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/1999 Português
Relevância na Pesquisa
47.571084%
From an analysis of a learning model based on the theory of information processing four hypothesis were developed for improving the design of laboratory courses. Three of these hypotheses concerned specific procedures to minimise the load on students' working memories (or working spaces) and the fourth hypothesis was concerned with the value of mini-projects in enhancing meaningful learning of the knowledge and skills underpinning the set experiments. A three-year study of a first year undergraduate chemistry laboratory course at a Scottish university has been carried out to test these four hypotheses. This paper reports the results of the study relevant to the three hypotheses about the burden on students' working spaces. It was predicted from the learning model that the load on students working space should be reduced by appropriate changes to the written instructions and the laboratory organisation and by the introduction of prelab-work and prelab-training in laboratory techniques. It was concluded from research conducted over the three years period that all these hypothesised changes were effective both in reducing the load on students' working spaces and in improving their attitudes to the laboratory course.

‣ Laboratory lore and research practices in the experimental analysis of human behavior 1

Buskist, William; Johnston, James M.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em //1988 Português
Relevância na Pesquisa
47.45493%
Growing interest in experimental analyses of human behavior has augmented the importance of describing its “laboratory lore” and research practices. “Laboratory lore” refers to the informal and miscellaneous collection of facts, assumptions, and techniques regarding the conduct of experimental research. This series of papers describes the laboratory lore and research practices of experimental analysts of human behavior. Topics include selecting subjects, designing session logistics, developing instructions, selecting reinforcers, and using subjects' verbal reports. These descriptions are offered as a step toward developing improved procedures for conducting research with human subjects.

‣ Challenges of the Unified Health System: present status of public laboratory services in 31 cities of Minas Gerais, Brazil

Vidigal,Pedro Guatimosim; Resende,Letícia Maria Henriques; Cardoso,Joanna Paula Guimarães; Seabra,Liz Custódio Souza; Maia,Mariana Rabelo; Mendes,Tasso Amós de Araújo; Viana,Luciana de Gouvêa
Fonte: Sociedade Brasileira de Patologia Clínica; Sociedade Brasileira de Patologia; Sociedade Brasileira de Citopatologia Publicador: Sociedade Brasileira de Patologia Clínica; Sociedade Brasileira de Patologia; Sociedade Brasileira de Citopatologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/04/2014 Português
Relevância na Pesquisa
57.621904%
Introduction: Modifications in the Brazilian Unified Health System (SUS) have led to a significant improvement in the national health indexes. However, some challenges still need to be faced, especially concerning SUS patients' access to high-quality laboratory support services. Objective: To evaluate the present status of laboratory services in SUS in 31 cities of Minas Gerais, Brazil, between 2008 and 2011. Material and method: This analysis was performed through data from the Information Technology Department of SUS (DATASUS) and through interviews with local public health managers with structured questionnaires. Results: Among all the studied cities, 21 had their own laboratory, 90.2% of which were in precarious conditions, not meeting the requirements established by the legislation in force, and employing inappropriate procedures and techniques, in addition to using obsolete equipment. The range of available laboratory tests was limited, what demanded the services of supporting laboratories. None of the evaluated laboratories developed any systematic activity on quality management, including control of analytical quality, maintenance of laboratory equipment, calibration and performance evaluation of critical equipment...

‣ Variability in laboratory parameters used for management of Cushing’s syndrome

Pecori Giraldi, Francesca; Ambrogio, Alberto G.
Fonte: Springer US Publicador: Springer US
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
57.23458%
The progress in assay methodology, from the use of radioactive tracers to chemiluminescent signals, from competitive to chromatographic techniques and from serum or urine to saliva has considerably impacted on hormonal measurements. The clinician now may choose among multiple tests but the inherent variability in cortisol and ACTH secretion, coupled to lack of harmonization among assay procedures and normal ranges mandates careful interpretation of any result. The present review will examine factors which affect interpretation of cortisol and ACTH measurements and their impact on tests used for management of Cushing’s syndrome.

‣ The Acceleration of the Diffusion-Limited Pump-and-Treat Aquifer Remediation with Pulsed Pumping that Generates Deep Sweeps and Vortex Ejections in Dead-End Pores

Kahler, David Murray
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Dissertação
Publicado em //2011 Português
Relevância na Pesquisa
47.660806%

Clean water is a critical natural resource. We do not have much available: only 2.5% of water on Earth is freshwater and of that only 31% is in liquid form. 96% of the liquid fresh water is groundwater. Unfortunately that resource is subject to contamination by hazardous materials accidentally or illicitly spilled, leaked, or deposited in or on the ground. Among the methods to remediate these disasters, pump-and-treat (P&T) is the most common. The vertical circulation well (VCW) is a P&T configuration with extraction and injection sites within the same well. It can be adapted to many remediation techniques and has been gaining popularity since the 1990s and is often a better alternative to conventional P&T. Conventional P&T and VCWs are typically run with steady flow.

The major bottleneck to steady flow remediation is that contaminants become trapped in dead-end pores. In an aquifer there are two types of pores: pass-through pores and dead-end pores. The flow in former completely sweeps through the pore space while the flow does not enter the later; however, the flow through the pass-through pore induces a vortex in the dead-end pore. Under steady flow the only mechanism for contaminants to escape the dead-end pores is molecular diffusion.

A similar problem is encountered in the removal of surfactants in the manufacture of semiconductor and the removal of oil residue build-up in small ducts. Manufacturers discovered that pulsed flow would accelerate the mass transfer between the cavities and grooves on these surfaces and the external flow. This was because the unsteady ramp-up in flow rate initiated a deep sweep of the cavities. The unsteady ramp-down in flow rate initiated a vortex ejection where the sequestered vortex is no longer constrained and protrudes from the cavity.

We hypothesized that just as pulsed flow improves cleaning of grooved surfaces in several manufacturing procedures...

‣ Laboratory Theory And Methods For Sediment Analysis

Guy, Harold
Fonte: Universidade de Delaware Publicador: Universidade de Delaware
Tipo: Relatório Formato: 6610194 bytes; application/pdf
Português
Relevância na Pesquisa
47.394717%
The diverse character of fluvial sediments makes the choice of laboratory analysis somewhat arbitrary and the processing of sediment samples difficult. This report presents some theories and methods used by the Water Resources Division for analysis of fluvial sediments to determine the concentration of suspended sediments samples and the particle-size distribution of both suspended-sediment and bed-material samples. Other analyses related to these determinations may include particle shape, mineral content, and specific gravity, the organic matter and dissolved solids of samples, and the specific weight of soils. The merits and techniques of both the evaporation and filtration methods for concentration analysis are discussed. Methods used for particle-size analysis of suspended-sediment samples may include the sievepipet, the VA tube-pipet, or the BW tube-VA imbe depending on the equipment available, the concentration and approximate size of sediment in the sample, and the settling medium used. The choice of method for most bed-material samples is usually limited to procedures suitable for sand or to some type of visual analysis for large sizes. Several tested forms are presented to help insure a well-ordered system in the laboratory to handle the samples...

‣ Techniques of Water-Resources Investigations of the United States Geological Survey

Porterfield, George
Fonte: United States Government Printing Office Publicador: United States Government Printing Office
Tipo: Outros Formato: 4782413 bytes; application/pdf
Português
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This report is one of a series concerning the concepts, measurement, laboratory procedures, and computation of fluvial-sediment discharge. Material in this report includes procedures and forms used to compile and evaluate particle-size and concetration data to compute fluvial-sediment discharge, and to prepare sediment records for publication.

‣ INDUSTRIAL BURNERS TESTING AND COMBUSTION EFFICIENCY ANALYSIS

Pimenta, J.; De Lima, L.C.; Duarte, J.B.F.; Macedo, R. M.
Fonte: UFPR Publicador: UFPR
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Peer-reviewed Article Formato: application/pdf
Publicado em 09/12/2005 Português
Relevância na Pesquisa
47.264644%
This paper describes experimental procedures and techniques adopted for combustion analysis during the testing of burners for industrial applications. The tests were carried out in the Combustion Technology Laboratory (NTC) of the University of Fortaleza. The NTC facilities are composed basically of experimental testing hall, a monitoring room, a chromatography laboratory and a modeling and simulation studies room. In the lab testing hall, is installed a test bench composed basically of the following parts : a combustion chamber with nominal thermal capacity of 1.000.000 kcal/h, two fully instrumented gas and air supply sections, a gas analyzer for emissions measurement, a panel for monitoring of water supply to combustion chamber coil, a cooling tower for heat delivery of combustion chamber. A data acquisition and control system is available with all the hardware tools for monitoring of the combustion process. With all the acquired measurements of temperature, flow rate, pressures, emissions, etc., the First Law energy balance approach was used in order to evaluate the combustion efficiency of two different burners with 378.000 and 403.200 kcal/h nominal heat power. Analysis of preliminary results allows representing the burners efficiency according to different air and fuel operating conditions. The experimental data obtained are also compared with simulation results from the modeling of the combustion process...