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1. A feasibility of absolute gravity measurements in geodynamics

Creator:
Pálinkáš, Vojtech, Jakub Kostelecký, and Jaroslav Šimek
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, metrologie, nejistota, metrology, uncertainty, hydrological effects, reproducibility, gravity acceleration, absolute gravimeter, FG5, repeatability, 7, and 551
Language:
English
Description:
The absolute gravity measurements are an important tool for reliable monitoring geodynamic phenomena. Based on the experience with the absolute gravimeter FG5#215 (gravimeter of the Center for Earth Dynamics Research), the accuracy of FG5 absolute gravimeters is presented in this study. The instrumental reproducibility of this meter is characterized by the value of 0.7 μGal. Discussed are important environmental effects on gravity measurements, such as atmospheric and hydrological effects, understanding of which is necessary for correct and reliable interpretation of the repeated absolute gravity measurements in geodynamics., Vojtech Pálinkáš, Jakub Kostelecký and Jaroslav Šimek., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Nakolik jsou vědecké výsledky reprodukovatelné?

Creator:
Luděk Svoboda and Vladimír Pliška
Format:
print, bez média, and svazek
Type:
article, rozhovory, model:article, and TEXT
Subject:
Věda. Všeobecnosti. Základy vědy a kultury. Vědecká práce, Akademie věd České republiky, Eidgenössische Technische Hochschule Zürich, věda a společnost, věda a umění, konference, science and society, science and art, conferences, reprodukovatelnost, reproducibility, 12, and 00
Language:
Czech
Description:
Luděk Svoboda.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

3. Reproducibility of blood pressure and inter-beat interval variability in man

Creator:
Miroslav Jíra, Eva Závodná, Zuzana Nováková, Bohumil Fišer, and Nataša Honzíková
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, krevní tlak, blood pressure, blood pressure variability, inter-beat interval variability, reproducibility, spectral analysis, 14, and 612
Language:
English
Description:
Increased blood pressure variability (BPV) and decreased interbeat interval (heart rate, respectively) variability (IBIV, HRV respectively) are associated with cardiovascular disorders. The aim of this study was to evaluate the reproducibility of BPV and IBIV (HRV) in young healthy individuals. Blood pressure and inter-beat intervals (instantaneous values of heart rate, respectively) were recorded beat-to-beat at rest (5 min, Finapres, breathing at 0.33 Hz) in 152 subjects (19-24 years) 3 times in periods of one week. Systolic (SBPV0.1r/SBPV0.1a) and diastolic (DBPV0.1r/DBPV0.1a) blood pressure variability in relative (r.u.) and absolute (mmHg2/Hz) units and inter-beat interval (IBIV0.1r/IBIV0.1a,), or heart rate (HRV0.1r/HRV0.1a) variability in relative (r.u.) and absolute (ms2/Hz, resp. mHz2) units were determined by the spectral method as spectral power at the frequency of 0.1 Hz and 0.33 Hz (SBPV0.33r/SBPV0.33a, DBPV0.33r/DBPV0.33a, IBIV0.33r/IBIV0.33a, HRV0.33r/HRV0.33a). All indices of BPV and IBIV (resp. HRV) revealed a lower intraindividual than interindividual variability (ANOVA; p<0.001). The mean values of all indices in each subject significantly correlated with distribution of individual values in the same subject (Pearson's correlation coefficient; p<0.001). Blood pressure and inter-beat interval (heart rate) variability is an individual characteristic feature., M. Jíra ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public