Sökning: "false positive results"

Visar resultat 11 - 15 av 106 avhandlingar innehållade orden false positive results.

1. 11. Prenatal diagnosis in routine antenatal care : a randomised controlled trial

   Författare :Sissel Saltvedt; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Ultrasound; fetal ultrasonography; Down s syndrome; chromosomal disorder; nuchal translucency; genetic screening; prenatal diagnosis; abnormalities; gestational age; in vitro fertilization; fetometry; dating formulas; false positive reactions; anxiety;

   Sammanfattning : Nuchal translucency (NT) measurement combined with maternal age has been shown to identify women at an increased risk of carrying a fetus with Down's syndrome (DS) more accurately than does maternal age alone. The aim of this study was to evaluate more widely the effects of two different strategies for prenatal diagnosis. LÄS MER

3. 12. Alphaherpesvirus infections of the central nervous system – Biomarkers, diagnostics and antiviral therapy

   Författare :Johan Lindström; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; herpesviruses; central nervous system; facial paralysis; cerebrospinal fluid; biomarkers; acyclovir; neurotoxicity; syndromic testing;

   Sammanfattning : Abstract Herpesviruses predate the evolution of humans and are globally ubiquitous. Herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2), and varicella-zoster virus (VZV) establish latency in neuronal tissue and may cause infections in the central nervous system (CNS). LÄS MER

4. 13. Direct Demonstration of Influenza Virus and Mycoplasma Pneumoniae in the Respiratory Tract

   Författare :Anna Nilsson; Enheten för infektionssjukdomar; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; polymeras chain reaction; influenza virus; Mycoplasma pneumoniae; diagnosis; respiratory tract infection; sample site; serial samples;

   Sammanfattning : Diagnostic tests based on nucleic acid amplification have become available for Mycoplasma pneumoniae (MP) and influenza viruses. Here, an MP PCR test detected 100% of infections during the first three symptomatic weeks, whereas classical serology detected 21% week 1, 56% week 2, and 100% week 3. LÄS MER

5. 14. Preemption-Delay Aware Schedulability Analysis of Real-Time Systems

   Författare :Filip Marković; Jan Carlson; Radu Dobrin; Björn Lisper; Enrico Bini; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Real-time systems; Scheduling; Schedulability analysis; Preemptions; Preemption delays; Embedded Systems; Preemptive scheduling; Response-time analysis; Cache-related preemption delay; Timing analysis; Worst-case execution time analysis; Limited-preemptive scheduling; Fixed preemption points; Computer Science; datavetenskap;

   Sammanfattning : Schedulability analysis of real-time systems under preemptive scheduling may often lead to false-negative results, deeming a schedulable taskset being unschedulable. This is the case due to the inherent over-approximation of many time-related parameters such as task execution time, system delays, etc. LÄS MER

7. 15. Pre-PCR Processing Strategies for Quantitative Detection of Food-Borne Pathogens using Real-Time PCR

   Författare :Petra Wolffs; Teknisk mikrobiologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Livsmedelsteknik; Food and drink technology; DNA polymerase; sample treatment; pre-PCR processing; real-time PCR; Food-borne pathogens;

   Sammanfattning : Since the development of real-time PCR, the technology has been widely applied in the field of diagnostics. In comparison with conventional PCR it has opened up the possibility of accurate quantification of microorganisms in clinical, environmental and food samples. LÄS MER