A COMPARATIVE STUDY OF ZYGOTIC TWINNING AND TRIPLET RATES IN EIGHT COUNTRIES, 1972–1999

2003 ◽  
Vol 35 (2) ◽  
pp. 287-302 ◽  
Author(s):  
Y. IMAIZUMI
Keyword(s):  
Czech Republic ◽  
The Netherlands ◽  
Slovak Republic ◽  
Vital Statistics ◽  
The Other ◽  
Federal Republic Of Germany ◽  
The Czech Republic ◽  
England And Wales ◽  
Fertility Drugs

Annual changes in twinning and triplet rates by zygosity were investigated in eight countries during the period 1972–1999 using vital statistics. The monozygotic (MZ) twinning rates in Denmark, Switzerland and the Slovak Republic remained more or less constant throughout this period, whereas those in England and Wales, the Federal Republic of Germany (Germany), the Netherlands, the Czech Republic and Japan increased significantly year by year. With the exception of the Slovak Republic, the dizygotic (DZ) twinning rate increased significantly year by year in each country. It was 2·9 times higher in Denmark and 1·5 times higher in Germany in 1999 than in 1972, and within the same range in the other countries. With two exceptions, the MZ triplet rates remained more or less constant in each country. On the other hand, the DZ and trizygotic (TZ) triplet rates increased significantly year by year in each country. The TZ rate increased 30-fold in Germany, 16·6-fold in Japan, 11·7-fold in Switzerland, 9·7-fold in the Czech Republic, 8·7-fold in the Netherlands, 6·4-fold in Denmark, 5·6-fold in England and Wales and 3·5-fold in the Slovak Republic. The higher DZ twinning rate and higher DZ and TZ triplet rates since 1983 have been attributed to the higher proportion of mothers being treated with ovulation-inducing hormones and in vitro fertilization (IVF) in Denmark, England and Wales, Germany, the Netherlands, Switzerland and Japan. After the introduction of fertility drugs and IVF, variations in the DZ twinning and triplet rates and the TZ triplet rates were not only due to biological factors, but also depended on the popularity of fertility drugs and IVF in each country. In the Slovak Republic, where human fertility might not be affected by some adverse environmental factors, the DZ:MZ ratio remained constant during the period 1972–1999.

A Comparative Study of Twinning and Triplet Rates in 17 Countries, 1972-1996

1998 ◽  
Vol 47 (2) ◽  
pp. 101-114 ◽  
Author(s):  
Y. Imaizumi
Keyword(s):  
Hong Kong ◽  
Czech Republic ◽  
The Netherlands ◽  
Comparative Study ◽  
Slovak Republic ◽  
Vital Statistics ◽  
The Other ◽  
Asian Countries ◽  
The Czech Republic ◽  
Secular Changes

AbstractSecular changes in twinning and triplet rates were analyzed using vital statistics in Austria, the Czech Republic, the Slovak Republic, England and Wales, Germany, the Netherlands, Switzerland, Denmark, Finland, Norway, Sweden, Canada, Australia, Hong Kong, Israel, Japan, and Singapore during the period from 1972 to 1996. Among those 17 countries, the twinning and triplet rates in the Czech Republic and in the Slovak Republic remained constant from 1972 to 1994, whereas these rates increased significantly year by year in the other 15 countries during the examined period in each country. Twinning rates increased from 1.2-fold in Austria to 2-fold in Denmark from 1972 to 1996. As for triplets, the rate increased from 3-fold in Denmark to 9-fold in Norway during that period. With one exception, that being the Slovak Republic, the triplet rate was highest in the Scandinavian countries, followed by the other European and Asian countries. The rising twinning and triplet rates have been attributed to the higher proportion of mothers treated with ovulation-inducing hormones and partially attributed to IVF.

Constant multiple birth rates in the Czech Republic and the Slovak Republic until recently, 1972–1995

Twin Research ◽  
1999 ◽  
Vol 2 (1) ◽  
pp. 10-15 ◽  
Author(s):  
Yoko Imaizumi
Keyword(s):  
Czech Republic ◽  
Slovak Republic ◽  
Vital Statistics ◽  
Assisted Reproductive Techniques ◽  
Multiple Birth ◽  
Birth Rates ◽  
Constant Multiple ◽  
The Czech Republic ◽  
Fertility Drugs ◽  
Reproductive Techniques

AbstractUsing vital statistics, yearly changes in the twinning and triplet rates by zygosity were investigated in the Czech Republic and the Slovak Republic during the period 1972–1995. Monozygotic (MZ) twinning rates in both countries had remained nearly constant (about 3 per 1000 total births) during that period. With a few exceptions, the dizygotic (DZ) twinning rates remained constant from 1972 to 1994, and increased in 1995 for both countries. MZ twinning rates for both countries were the lowest in Europe. As for triplet rates, overall rates increased significantly year by year in the Czech Republic, but not in the Slovak Republic. The triplet rate was significantly higher in 1995 than in the period 1972–1982 for both countries. The MZ triplet rate remained constant during that period in the Czech Republic. The trizygotic (TZ) triplet rates increased 3-fold for the Czech Republic and 4-fold for the Slovak Republic in 1972–1976 and 1992–1995. In the later period, the TZ rate was 1.5-fold higher in the Czech Republic than in the Slovak Republic. The quadruplet rate increased 2.3-fold from 2.9 per million births in 1982–1986 to 6.7 in 1992–1995 in the Czech Republic. The corresponding values were 2.7, 2.20 and 5.9-fold in the Slovak Republic. Both the Czech and the Slovak Republics were not affected by fertility drugs and assisted reproductive techniques until recently.

scholarly journals Damage to corn by fungi of the genus Fusarium and the presence of fusariotoxins

2012 ◽  
Vol 38 (No. 2) ◽  
pp. 46-54 ◽  
Author(s):  
J. Nedělník
Keyword(s):  
Czech Republic ◽  
Fusarium Graminearum ◽  
The Other ◽  
The Czech Republic ◽  
Genus Fusarium ◽  
Toxic Metabolites ◽  
Fungal Contaminants ◽  
Harvest Maturity ◽  
Maximum Content

In 1998 and 1999 a total of 84 samples of corn, predominantly from localities in southern and central Moravia, were collected either directly from fields (entire ears at harvest maturity) or as grain from merchants. The objectives of the experiments were (a) to determine, on the basis of the results from mycological and toxicological analyses, the basic spectrum of fungal contaminants of corn in the Czech Republic with special reference to the genus Fusarium, and (b) to determine by enzyme immunoassay the presence of major toxic metabolites such as deoxynivalenol (DON), T-2 toxin (T-2), zearalenone (ZEA), and fumonisins (FUM) in grain samples. From naturally infected corn, representatives of seven fungal genera were isolated under in vitro conditions in both harvest years. Most frequent were species of the genus Fusarium (mean contamination of 44.6%). The next frequent genus was Stemphylium (29.3%). Eight species of Fusarium were found. In both years the most frequent species was Fusarium graminearum (1998 – 42.75%, 1999 – 41.8%), followed by F. culmorum. DON was found in 95.2% of the samples; its content ranged from 25 to 285 µg/kg. The content of T-2 varied more than that of DON, ranging from 12 to 875 µg/kg. Zearalenone content was more varied than that of the trichothecene-type compounds; 17% of the samples did not contain ZEA, the maximum content was 110 µg/kg. No FUM were found in 17% of the samples; in the others, FUM ranged from 12 to nearly 1000 µg/kg. Compared with the other three compounds, fumonisins showed generally the highest levels.

scholarly journals Measuring costs of noise pollution generated by freight transport: Case of the Slovak and Czech Republic

2021 ◽  
pp. 1-18
Author(s):  
Břetislav Andrlík
Keyword(s):  
Czech Republic ◽  
Slovak Republic ◽  
Noise Pollution ◽  
Freight Transport ◽  
Current Status ◽  
Negative Externality ◽  
Actual Measurement ◽  
The Czech Republic ◽  
Marginal Costs ◽  
Negative Impacts

The paper focuses on measuring and quantification of the negative externality of noise pollution generated by freight transport in the Slovak Republic and the Czech Republic. The paper describes negative impacts and significance of noise externalities, whereas it is established that noise causes psychological and physiological harm to affected persons. A separate part of the paper is dedicated to the current status of the European legislation dealing with the issues of the negative externality of noise pollution, in particular Directive 2002/49/EC of the European Parliament and of the Council and Communication COM(2008) 435. The actual measurement of the total, average and marginal costs of noise pollution is implemented in line with the defined methodology and using expert studies defined in the paper. The measurement results show that the costs of the negative externality of noise pollution are high in both countries. According to authors’ calculations, the total costs of the negative externality of noise pollution amount to EUR 100.8 mil in the Czech Republic and EUR 16.9 mil in the Slovak Republic. The paper contains a proposal of internalisation of these costs in the form of performance charges applied to operation of heavy goods vehicles.

scholarly journals Comparative Study of the Perception of the Role of a Social Worker in Hospitals in the Czech Republic and Slovakia during the COVID-19 Pandemic

2021 ◽  
Vol 12 (4) ◽  
pp. 23-30
Author(s):  
P. Laca ◽  
s. Laca
Keyword(s):  
Czech Republic ◽  
Social Worker ◽  
Professional Education ◽  
Research Study ◽  
Slovak Republic ◽  
University Education ◽  
Online Questionnaire ◽  
The Czech Republic ◽  
The Social

This research study is focused on the perception of the role of asocial worker by hospital nurses in the Czech and Slovak Re- public during the COVID-19 pandemic. Aim of the study:The main aim of the research study was to find the opinions of nurses from the Czech and Slovak Repub- lic on asocial worker who works in ahospital during acoron- avirus - COVID-19 pandemic and then compare their opinions in helping patients Research sample and setting:The research sample of the study consisted of 75 nurses with higher professional education (Czech Republic), university education of the first and second degree (Czech Republic, Slovak Republic), who were together with social workers in the front line in hospitals at the time of the coronavirus pandemic COVID-19. All participating respon- dents were informed about the purpose of the research study and the completion of the online questionnaire. Statistical analysis:The mathematical-statistical method chi- square test of the independence of the criteria of individual re- search hypotheses was used to compare the interviewed re- spondents in the Czech Republic and Slovakia. Results of the study:Medical staff at the time of the COVID- 19 pandemic was satisfied with the social worker, as evidenced by the research study and their answers in the questionnaire survey. It is clear from the results of the research survey that the participants perceived the social worker positively during the COVID-19 pandemic.

scholarly journals DETERMINANTS OF ECONOMIC DEVELOPMENT AND EMPLOYABILITY OF HIGHER EDUCATION INSTITUTIONS GRADUATES

2020 ◽  
Vol 31 (2) ◽  
pp. 211-220
Author(s):  
Emília Krajňáková ◽  
Vaida Pilinkienė ◽  
Patrik Bulko
Keyword(s):  
Higher Education ◽  
Economic Development ◽  
Czech Republic ◽  
Gross Domestic Product ◽  
Slovak Republic ◽  
Domestic Product ◽  
Experimental Development ◽  
Correlation Relationship ◽  
The Czech Republic ◽  
The Impact

The scope of the data presented in this study offers a comprehensive view of the issue of the HEI graduates employability in the Czech Republic and also in the Slovak Republic – related to determinants of economic development and their impact on them. This paper examines the impact of gross domestic product, gross domestic expenditure on research and experimental development by only higher education sector and foreign direct investment on HEI graduates employability. The results indicate that correlation between unemployment of tertiary educated Slovaks and GDP, GERD and FDI values was very big. Correlation relationship of similar determinants, except determinant GERD in conditions of the Czech Republic was characterized as weak. On the other hand, significantly stronger (very big to perfect) correlation affecting employment of tertiary educated Czechs regarding to indicators of gross domestic product, gross domestic expenditure on research and experimental development by sector of higher education and foreign direct investments as well. In conditions of the Slovak Republic, correlation relationship between employment of tertiary educated Slovaks and GDP was almost perfect.

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