Technical Reproducibility
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. Measurement of platelet adhesiveness including the use of diatomaceous silica (celite)
Methods of platelet adhesiveness to glass and celite have been developed. The technical merits of these methods have been compared with a method using adenosine diphosphate (ADP). The aspects of platelet stickiness measured by the various techniques may be somewhat different. Bearing this in mind, the reproducibility of the results using each of the three me
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14. Reproducibility of the visual evoked potential using a light-emitting diode stimulator.
The intersubject and intrasubject reproducibility of the VEP was evaluated using two different methods of producing pattern reversal--a mirror/projector system and a light-emitting diode (LED) system. Intersubject reproducibility was determined in 100 normal subjects (50 males, 50 females). Ten subjects were studied on ten different occasions over 11 months
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15. Oxacillin, cephalothin, and vancomycin tube macrodilution MBC result reproducibility and equivalence to MIC results for methicillin-susceptible and reputedly tolerant Staphylococcus aureus isolates.
Measurement of antimicrobial killing endpoints of Staphylococcus aureus isolates in tube macrodilution MBC testing has been difficult because of multiple technical factors. A total of 41 fresh clinical isolates and 23 reputedly oxacillin-tolerant strains were examined by a modification of the Taylor MBC method. Oxacillin, cephalothin, and vancomycin MBCs wer
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16. Antifungal susceptibility testing of yeasts: evaluation of technical variables for test automation.
The technical parameters for antifungal susceptibility testing with Candida species were reexamined to determine the optimal conditions for testing with semiautomated preparations of broth microdilution cultures, automated spectrophotometric readings of the cultures, and dose-response and endpoint determinations by means of a computer spreadsheet. Tests were
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17. Gauge repeatability and reproducibility for accessing variability during dissolution testing: A technical note
In this study, the gauge R&R method was used to analyze sources of variability for the paddle apparatus (USP apparatus 2). An initial evaluation of gauge R&R dissolution testing results using the amount dissolved at 30 minutes for a 10-mg prednisone tablet showed no instrument or operator contributions to variability but did highlight some vessel differences
Springer-Verlag.
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18. Accuracy and reproducibility of the AutoMicrobic System Gram-Negative General Susceptibility-Plus Card for testing selected challenge organisms.
A total of 180 selected strains of gram-negative bacilli were tested for susceptibility to nine antibiotics by the prototype General Susceptibility Card and reference broth microdilution MIC method, and 112 of 180 were tested by the modified Gram-Negative General Susceptibility-Plus Card (Vitek Systems, Inc., Hazelwood, Mo.). When category calls--susceptible
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19. Comparison of Dissociation-Enhanced Lanthanide Fluorescent Immunoassays to Enzyme-Linked Immunosorbent Assays for Detection of Staphylococcal Enterotoxin B, Yersinia pestis-Specific F1 Antigen, and Venezuelan Equine Encephalitis Virus
The dissociation-enhanced lanthanide fluorescent immunoassays (DELFIA) were developed for the detection of staphylococcal enterotoxin B, Yersinia pestis-specific F1 antigen, and Venezuelan equine encephalitis virus. These assays were compared to previously developed enzyme-linked immunosorbent assays (ELISAs) by determining the sensitivity or limit of detect
American Society for Microbiology.
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20. Comparability and reproducibility of apex cardiogram recorded with six different transducer systems.
A comparison was made in 7 dogs of the results obtained by 6 different apex cardiographic transducers applied before, during, and after controlled infusion of angiotensin and isoprenaline. The electrocardiogram, internal phonocardiogram, aortic and left ventricular pressure using a Telco micromanometer, and apex cardiogram were recorded simultaneously on mag
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21. High Degree of Interlaboratory Reproducibility of Human Immunodeficiency Virus Type 1 Protease and Reverse Transcriptase Sequencing of Plasma Samples from Heavily Treated Patients
We assessed the reproducibility of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) and protease sequencing using cryopreserved plasma aliquots obtained from 46 heavily treated HIV-1-infected individuals in two laboratories using dideoxynucleotide sequencing. The rates of complete sequence concordance between the two laboratories were 9
American Society for Microbiology.
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22. Comparative evaluation of three methods for measuring gentamicin and tobramycin in serum.
Three procedures (radioimmunoassay, fluorescence immunoassay, and enzyme immunoassay) for the determination of gentamicin and tobramycin levels were compared. These systems were evaluated on the basis of accuracy, reproducibility, specificity, and cost. All three systems showed a high degree of accuracy and precision. The fluorescence immunoassay gave signif
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23. Serological characterisation of Ureaplasma urealyticum strains by enzyme-linked immunosorbent assay (ELISA).
A modification of enzyme-linked immunosorbent assay (ELISA) was developed for the serological characterisation and identification of strains of Ureaplasma urealyticum. The eight recognised human serotypes of U urealyticum and antisera produced against them were used as reference for the evaluation and standardisation of the method. The serological profile il
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24. Tests for bactericidal effects of antimicrobial agents: technical performance and clinical relevance.
Bactericidal testing has been used for several decades as a guide for antimicrobial therapy of serious infections. Such testing is most frequently performed when bactericidal antimicrobial agent therapy is considered necessary (such as when treating infectious endocarditis or infection in an immunocompromised host). It has also been used to ensure that the i