Youngest Radiocarbon Age for Jefferson's Ground Sloth, Megalonyx Jeffersonii (Xenarthra, Megalonychidae)

2015 ◽  
Vol 83 (2) ◽  
pp. 355-359 ◽  
Author(s):  
H. Gregory McDonald ◽  
Thomas W. Stafford ◽  
Dale M. Gnidovec
Keyword(s):  
Organic Compounds ◽  
Ohio State University ◽  
State University ◽  
Radiocarbon Age ◽  
Geological Museum ◽  
Initial Discovery ◽  
Ground Sloth ◽  
First Time ◽  
Partial Skeleton

A partial skeleton of the extinct ground sloth, Megalonyx jeffersonii, recovered from a farm near Millersburg, Ohio in 1890, was radiocarbon dated for the first time. The ungual dated is part of a skeleton mounted for exhibit at the Orton Geological Museum at Ohio State University and was the first mounted skeleton of this animal. From its initial discovery the bones were treated with multiple organic compounds that had the potential to compromise the radiocarbon age and the specimen required special treatments in order to obtain a valid radiocarbon age. The 14C measurement on the ungual from this skeleton (11,235 ± 40 14C yr BP = 13,180–13,034 cal yr BP) is the youngest 14C age presently determined for M. jeffersonii.

Colloidal Carbon as Revealed by the Electron Microscope

1942 ◽  
Vol 15 (3) ◽  
pp. 664-671
Author(s):  
William B. Wiegand ◽  
William A. Ladd
Keyword(s):  
Electron Microscope ◽  
Surface Area ◽  
Ohio State University ◽  
Theory And Practice ◽  
Critical Conditions ◽  
State University ◽  
New Approach ◽  
Synthetic Rubber ◽  
Electron Lens ◽  
First Time

Abstract The electron microscope of today may be said to rest on the pioneer work of three outstanding physicists. J. J. Thompson, in 1897, discovered electrons under the name of negative corpuscles. De Broglie, about 1922, established the wave characteristics of electrons. In 1926 Busch established the electron lens. In 1935, E. F. Burton, following a visit to Germany, envisaged the enormous potentialities of the electron microscope and began a program at Toronto designed to eliminate the serious defects of early German instruments. In 1938, this program culminated in the construction of a new and superior instrument by two of his graduate students, A. Prebus and J. Hillier. The publication of their results early in 1939 aroused the immediate interest of the Columbian Carbon Company which later established a Fellowship at Toronto under Professor Burton's direction. In 1940, A. Prebus, assisted by W. A. Ladd, working in Toronto, secured for Columbian the first perfect pictures of Micronex, from which accurate data as to mean surface area and as to particle shape were obtained. Public release followed in June, 1940. Prebus is now Professor at Ohio State University and is pursuing the theoretical side. Hillier is at R. C. A., where instruments, of essentially Toronto design, are being developed commercially, and Ladd has joined the Columbian Carbon Research Laboratories, for the two-fold purpose of further improving the microscope and of applying it to the problems of natural and synthetic rubber reënforcement. This work of Professor Burton and his pupils is of importance under present critical conditions since the replacement of natural by synthetic rubber necessitates a new approach to the theory and practice of rubber reënforcement. With the aid of the electron microscope, it is now for the first time possible to evaluate the role played by surface area in carbon-rubber reënforcement.

Lectotype of Phacops rana milleri Stewart, 1927 (Trilobita, Devonian of Ohio)

1992 ◽  
Vol 66 (4) ◽  
pp. 692-693
Author(s):  
Loren E. Babcock
Keyword(s):  
Middle Devonian ◽  
Ohio State University ◽  
State University ◽  
Geological Museum ◽  
The Ohio State University ◽  
Lucas County

The trilobite Phacops rana var. milleri Stewart, 1927, was based on five specimens collected from the Silica Shale (Middle Devonian) in a quarry formerly owned by the Sandusky Cement Company, near Silica, Lucas County, Ohio. The “cotypes” (=syntypes of modern terminology) were catalogued as number 16266 in the Orton Geological Museum of The Ohio State University. Study of specimens in the OSU collection reveal four extant syntypes belonging to two subspecies of Phacops rana (Green, 1832). Three complete specimens and one separate eye are represented. A cephalon mentioned by Stewart (1927, p. 59) is missing and presumed lost. Of the extant specimens, three belong to P. rana milleri and one belongs to P. rana crassituberculata Stumm, 1953.

Pam Gems, Jane Lapotaire, and a Phenomenon Named Piaf

2017 ◽  
Vol 33 (3) ◽  
pp. 219-226
Author(s):  
Jane Lapotaire
Keyword(s):  
Doctoral Dissertation ◽  
Ohio State University ◽  
State University ◽  
Award Winning ◽  
International Attention ◽  
Male Dominated ◽  
The Ohio State University ◽  
First Time

In this interview, award-winning actress Jane Lapotaire talks about the process of devel - op ing the central role in Pam Gems's Piaf, for which she won the Tony Award for Best Actress in 1981. She further describes how Gems gave her the chance to play a protagonist for the first time in her career in the British male-dominated theatre of the late 1970s. Gems established herself as a major feminist playwright in the British theatre in 1976 with the production of Dusa, Fish, Stas and Vi, although it was Piaf that brought her international attention and acclaim. Lapotaire discusses the significance of the female mission to create protagonist roles for women in the theatre who did not previously have the opportunity to drive a play's narrative. Esmaeil Najar is a translator, director, and theatre historian. He is currently writing his doctoral dissertation at the Ohio State University on Pam Gems's life and impact on British theatre.

Five Decades of Research Experience in Speech Anatomy and Physiology

2016 ◽  
Vol 1 (5) ◽  
pp. 4-12
Author(s):  
David P. Kuehn
Keyword(s):  
Ohio State University ◽  
State University ◽  
Research Experience ◽  
University Of Iowa ◽  
University Of Illinois ◽  
Anatomy And Physiology ◽  
The Ohio State University ◽  
Speech Science ◽  
The University ◽  
East Carolina University

This report highlights some of the major developments in the area of speech anatomy and physiology drawing from the author's own research experience during his years at the University of Iowa and the University of Illinois. He has benefited greatly from mentors including Professors James Curtis, Kenneth Moll, and Hughlett Morris at the University of Iowa and Professor Paul Lauterbur at the University of Illinois. Many colleagues have contributed to the author's work, especially Professors Jerald Moon at the University of Iowa, Bradley Sutton at the University of Illinois, Jamie Perry at East Carolina University, and Youkyung Bae at the Ohio State University. The strength of these researchers and their students bodes well for future advances in knowledge in this important area of speech science.

Cardiology Fellowship Education in the Era of High-density Training, Data Tracking, and Quality Measures

2011 ◽  
Vol 9 (2) ◽  
pp. 99
Author(s):  
Alex J Auseon ◽  
Albert J Kolibash ◽  
◽  
Keyword(s):  
Ohio State University ◽  
Training Data ◽  
State University ◽  
Training Requirements ◽  
Healthcare Environment ◽  
Medical Centers ◽  
Work Hour ◽  
The Ohio State University ◽  
Data Tracking

Background:Educating trainees during cardiology fellowship is a process in constant evolution, with program directors regularly adapting to increasing demands and regulations as they strive to prepare graduates for practice in today’s healthcare environment.Methods and Results:In a 10-year follow-up to a previous manuscript regarding fellowship education, we reviewed the literature regarding the most topical issues facing training programs in 2010, describing our approach at The Ohio State University.Conclusion:In the midst of challenges posed by the increasing complexity of training requirements and documentation, work hour restrictions, and the new definitions of quality and safety, we propose methods of curricula revision and collaboration that may serve as an example to other medical centers.

Peronosporales of Skadovsky Zvenigorod Biological Station (Moscow Region)

2018 ◽  
Vol 52 (1) ◽  
pp. 91-100
Author(s):  
E. Yu. Blagoveshchenskaya
Keyword(s):  
Downy Mildew ◽  
European Part ◽  
Moscow Region ◽  
State University ◽  
Biological Station ◽  
Annotated List ◽  
European Part Of Russia ◽  
First Time ◽  
Moscow State University

The paper provides the results of seven-year study of downy mildew on Skadovsky Zvenigorod Biological Station of Moscow State University (ZBS MSU, Moscow Region). A total of 29 species of Peronosporales (Oomycota) were revealed during the study. An annotated list of species is presented, among them Peronospora anemones is recorded for the first time for Russia, P. chelidonii and P. stachydis are new for the European part of Russia, 8 species are new for the Moscow Region.

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