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RISS 인기검색어
- 검색키워드
- 저자 : Yasemin Korkmaz (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Evaluation of Invasive and Noninvasive Methods for the Diagnosis of Helicobacter Pylori Infection
Cosgun, Yasemin,Yildirim, Abdullah,Yucel, Mihriban,Karakoc, Ayse Esra,Koca, Gokhan,Gonultas, Alpaslan,Gursoy, Gul,Ustun, Huseyin,Korkmaz, Meliha Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.12
Objective: The present study was conducted to evaluate invasive and noninvasive diagnostic methods for detection of Helicobacter pylori (H. pylori) in patients admitted with dyspeptic complaints and to compare sensitivities and specificities. Method: Sets of four gastric biopsy specimens were obtained from a total of 126 patients included in the study. The presence of H. pylori was determined by invasive tests including culture, rapid urease test, polymerase chain reaction (PCR) and histopathology. Among noninvasive tests, urea breath test, serological tests and enzyme-linked immunosorbent assay (ELISA) were performed. Results: H. pylori was isolated in 79 (62.7%) gastric biopsy cultures, whereas positivity was concluded for 105 (83.3%) patients by rapid urease test, for 106 (84.1%) by PCR, for 110 (87.3%) by histopathology, for 119 (94.4%) by urea breath test, and for 107 (84.9%) by ELISA. In the present study, the culture findings and histopathological examination findings were accepted as gold standard. According to the gold standard, urea breath test had the highest sensitivity (96.5%) and the lowest specificity (30%), whereas culture and histopathology had the highest specificities (100%). Conclusion: The use of PCR invasively with gastric biopsy samples yielded parallel results with the gold standard. PCR can be recommended for routine use in the diagnosis of H. pylori.
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Acoustic and Thermal Properties of Polypropylene Carpets: Effect of Pile Length and Loop Density
Merve Küçük,Yasemin Korkmaz 한국섬유공학회 2019 Fibers and polymers Vol.20 No.7
Sound control in office and living environments is cruical for creating a peaceful and relaxing occupation forindividuals. Improvement of sound absorption properties of textile materials used in architectural structures has become anissue of importance. The study here is focused on acoustic characterization of polypropylene carpets used in the indoorenvironments. Due to growing interest in mass, volume and cost efficient multifunctional materials, additionally thermalconductivity of the carpets have been studied. Polypropylene carpet samples were prepared with four different pile length andtwo different loop density parameters. It has been observed that loop density and pile length parameters affect thermalproperties and sound absorption rates all frequency ranges. Anova analysis for sound absorption revealed that the combinedeffect of loop density and pile length parameters is evident in the mid-to-high frequency ranges.
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