Low Tech
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. Otimização H2 com controladores estaveis : uma abordagem por programação geometrica
In this work, the H2 optimization problem constrained to stable controllers motivates a study on the geometric properties of the Routh-Hurwitz conditions. Through the arithmetic-geometric inequality and concepts and results of geometric programming, it is shown that is always possible to obtain an inner convex representation of the Routh-Hurwitz conditions
Publicado em: 1996
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14. Tecnicas de protoplastização e isolamento de DNA de alto peso molecular de aspergillus niger
This research was done aiming the improvement of two methods of great relevanceto the Recombinant DNA Tech-nology (RDT) in Aspergillus niger. Firstly, the method of production and regeneration of protoplasts was improved. The best protoplasts preparations (2. 1 x 108 protoplasts/ml) were obtained when the my-celium was grown in medium containing Tween 80 and
Publicado em: 1987
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15. High tech in a low tech country.
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16. High-tech and low-tech orthopaedic surgery in Sub-Saharan Africa
BioMed Central.
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17. Evaluation of commercial methods for determining antimicrobial susceptibility of Streptococcus pneumoniae.
Seven commercial systems for antimicrobial susceptibility testing of Streptococcus pneumoniae were evaluated by using a challenge set of 55 pneumococcal isolates with a variety of resistance phenotypes and genotypes. Overall, the results produced by the Pasco and Etest methods were found to be acceptable for all drugs tested except for trimethoprim-sulfameth
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18. What can we do about osteoarthritis?
Osteoarthritis is complex in genetics, pathogenesis, monitoring and treatment. Current treatment of osteoarthritis does not influence progression. Much could be gained by more effective 'low-tech-low-cost' treatment. However, many patients have rapidly progressive disease, multiple joint involvement, and severe disease. We need to clarify the genetics of ost
BioMed Central.
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19. Photographic and Luminometric Detection of Luciferase Reporter Phages for Drug Susceptibility Testing of Clinical Mycobacterium tuberculosis Isolates
Luciferase reporter phages (LRPs) have proven to be efficient tools for drug susceptibility testing of Mycobacterium tuberculosis. Luminometric detection of LRP activity offers higher sensitivity and quantitative results, while a Polaroid film detection method offers a “low-tech” inexpensive alternative that is called the Bronx box. In this work we evalu
American Society for Microbiology.
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20. Detection and Differentiation of Entamoeba histolytica and Entamoeba dispar Isolates in Clinical Samples by PCR and Enzyme-Linked Immunosorbent Assay
Differential diagnosis of Entamoeba histolytica (pathogenic) and Entamoeba dispar (nonpathogenic), which are two morphologically identical species of amebae, is essential both for treatment decision and public health knowledge. The study reported here was designed to choose a reference differentiation technique. Stool samples (n = 95) were tested by microsco
American Society for Microbiology.
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21. New Simple and Rapid Test for Culture Confirmation of Mycobacterium tuberculosis Complex: a Multicenter Study
Mycobacterial antigen MPB64 has been identified as a Mycobacterium tuberculoisis complex-specific secretory protein since 1984. Recently, a simple culture confirmation test for M. tuberculosis complex has been developed by using lateral flow immunochromatographic assay (ICA) to detect MPB64 with anti-MPB64 monoclonal antibody. The current multicenter study e
American Society for Microbiology.
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22. Mutants of bacteriophage T4 deficient in the ability to induce nuclear disruption: shutoff of host DNA and protein synthesis gene dosage experiments, identification of a restrictive host, and possible biological significance.
The shutoff of host DNA synthesis is delayed until about 8 to 10 min after infection when Escherichia coli B/5 cells were infected with bacteriophage T4 mutants deficient in the ability to induce nuclear disruption (ndd mutants). The host DNA synthesized after infection with ndd mutants is stable in the absence of T4 endonucleases II and IV, but is unstable