Abnormalities in Pentremites Say (Blastoidea) from the Pella Formation (Upper Mississippian) of Iowa

1986 ◽  
Vol 60 (2) ◽  
pp. 390-399 ◽  
Author(s):  
Alan S. Horowitz ◽  
Susan Able ◽  
H. L. Strimple
Keyword(s):  
Environmental Stress ◽  
Geologic History ◽  
Asymmetrical Distribution ◽  
Total Frequency ◽  
Different Types ◽  
History Of ◽  
And Inversion

Approximately 10,000 determinable specimens of Pentremites pulchellus Ulrich (Blastoidea, Echinodermata) from a single quarry in the Pella Formation near Oskaloosa, Mahaska County, Iowa, have been examined for abnormal morphologic characters. The total frequency (2.7%) and the frequency among different types of abnormalities (ambulacral 29%; basal 46%; symmetrical 12%) are significantly different in the Pella material than in previously published studies (Wanner, 1932; Macurda, 1980). The greater frequency of abnormalities in the Pella Formation than in previous studies may reflect higher environmental stress because of variable temperatures or salinities or both. The kinds of abnormalities are the same among published studies, which suggest that the underlying biological causes of abnormalities were similar throughout the geologic history of the blastoids. Ambulacral abnormalities are symmetrically distributed, but the division and inversion of basal plates show an asymmetrical distribution as previously recorded by Macurda (1980). The Pella Formation is of Genevievian age (Upper Mississippian) based on the occurrence of Pugnoides ottumwa (White) and convex ambulacra in Pentremites pulchellus. Other unequivocal guide fossils are unknown in the Pella Formation.

GENERAL CHARACTERISTIC OF TEA IN THE MARKETS OF TURKESTAN IN THE XIX-XX CENTURIES

2019 ◽  
Vol 16 (2) ◽  
pp. 55-60
Author(s):  
Maxfuza Mamatova ◽  
Keyword(s):  
General Characteristic ◽  
General Description ◽  
Different Types ◽  
History Of

This article deals with the general description of tea in the markets of Turkestan,provides an overview of the history of our country in the XIX-XX centuries, which based on archival materials and sources. This article tells about the types and varieties of tea consumed by our people, about the different types of tea that replace tea, where they were brought from, the meanings of their historical names and the consumption that was loved by our people.

Zum Einsatz von Definitionen in Pädagogik und Erziehungswissenschaft

2019 ◽  
Vol 95 (2) ◽  
pp. 145-161
Author(s):  
Thomas Mikhail
Keyword(s):  
Historical Research ◽  
Educational Science ◽  
Different Types ◽  
History Of ◽  
Academic Genre

Abstract On the Use of Definitions in Pedagogy and Educational Science. A Historical Journey with Systematic Intent In the academic genre of pedagogy and educational science, definitions were used from the very beginning. The question is if it is possible to differentiate between types of definitions within the history of these sciences. To answer this question the paper revives two different types of traditional definitions in order to generate a typology of definition usage. The typology can be used as a heuristic instrument for further systematic and historical research.

THE GEOLOGIC HISTORY OF SCARBOROUGH MARSH

2018 ◽  
Author(s):  
Nicholas F. Barker ◽  
◽  
Beverly J. Johnson ◽  
Philip T. Dostie
Keyword(s):  
Geologic History ◽  
History Of

Adverse Childhood Experiences and Prevalence of Cigarette and E-Cigarette Use Among Adolescents in Bangkok, Thailand

2020 ◽  
Vol 32 (8) ◽  
pp. 398-405
Author(s):  
Takuma Ofuchi ◽  
Aye Myat Myat Zaw ◽  
Bang-on Thepthien
Keyword(s):  
Adverse Childhood Experiences ◽  
Multinomial Logistic Regression ◽  
Tobacco Product ◽  
Dual Use ◽  
Childhood Experiences ◽  
Adverse Childhood ◽  
Different Types ◽  
History Of ◽  
The Relationship ◽  
Score Range

Currently, e-cigarettes are the most popular tobacco product among adolescents. The purpose of this study was to explore the relationship between exposure to adverse childhood experiences (ACEs) and use of cigarettes, e-cigarettes, and dual use in a sample of adolescents in Bangkok, Thailand. The sample comprises 6167 students from 48 schools (grades 9, 11, and vocational year 2) who participated in the 2019 round of the Behavior Surveillance Survey. History of 11 ACEs was used to calculate a cumulative ACE score (range 0-11). Multinomial logistic regression was used to assess the relationship between history of ACEs and smoking. In the sample, 7.0% reported using e-cigarettes only and 9.5% used e-cigarettes and cigarettes (dual use). After controlling for sociodemographic characteristics, history of ACEs was associated with increased odds of dual use. The odds of cigarette, e-cigarette, and dual use was significantly greater if the adolescent had a history of ≥4 ACEs. Special attention is needed to prevent smoking of different types among those with a history of ACEs.

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