scholarly journals Intercomparison of High-Precision ∆14C Analyses Using Gas Counting and AMS

Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 791-795 ◽  
Author(s):  
Ellen R. M. Druffel ◽  
Douglas J. Donahue ◽  
Sheila Griffin ◽  
George S. Burr
Keyword(s):  
High Precision ◽  
High Intensity ◽  
Ion Source ◽  
University Of California ◽  
Precision Measurements ◽  
The Third ◽  
University Of Arizona ◽  
The University ◽  
Good Agreement

We report results of a three-year intercomparison experiment between the WHOI Radiocarbon Laboratory (now at University of California, Irvine) and the NSF-University of Arizona AMS Laboratory. The purpose of this study was to compare high-precision measurements of samples obtained routinely using gas proportional counting techniques with results obtained using AMS techniques. Three sets of annually banded, modern coral samples were used for the intercomparison. Each sample was acidified to CO2 at WHOI and split into two fractions. The larger fraction was converted to acetylene gas and counted at WHOI in quartz, gas-proportional beta counters. The smaller fractions were converted to graphite and analyzed for 14C using AMS techniques at the University of Arizona. Results of the three sample sets are presented. Except for a single outlier, the data from the two laboratories are in good agreement. Of the 13 samples in the third set of the intercomparison, for which a new high-intensity ion source was in operation at the Arizona AMS laboratory, agreement of results is excellent. This finding indicates that measurements made with precisions of < 3% are reproducible at both laboratories.

scholarly journals Intercomparison of High-Precision 14C Measurements at the University of Arizona and the Queen's University of Belfast Radiocarbon Laboratories

Radiocarbon ◽  
1995 ◽  
Vol 37 (1) ◽  
pp. 33-38 ◽  
Author(s):  
R. M. Kalin ◽  
F. G. McCormac ◽  
P. E. Damon ◽  
C. J. Eastoe ◽  
Austin Long
Keyword(s):  
High Precision ◽  
Calibration Curve ◽  
Douglas Fir ◽  
Precision Measurements ◽  
University Of Washington ◽  
University Of Arizona ◽  
Queen's University ◽  
The University ◽  
Radiocarbon Calibration

High-precision measurements were completed concurrently at the University of Arizona and the Queen's University of Belfast on blind samples of Irish oak originally measured for the 1986 radiocarbon calibration curve. Subsequent single-year Sequoiadendron results were decadally averaged and compared with published results on decadal Douglas-fir samples. The results of these intercomparisons show that the Arizona high-precision results compare favorably with published values from the University of Washington, but show a systematic offset with published Belfast data.

The Livable Eighteenth Century

2019 ◽  
Vol 6 (1) ◽  
pp. 175-191
Author(s):  
James R. Currie
Keyword(s):  
Eighteenth Century ◽  
Panel Discussion ◽  
University Of California ◽  
The Third ◽  
Review Articles ◽  
The University

The third in a set of review articles treating Wye Allanbrook's posthumously published Secular Commedia (University of California Press, 2014). The reviews originated as a panel discussion organized by Edmund J. Goehring at the Mozart Society of America's 2018 meeting at the University of Western Ontario.

The Elders of Early Dilmun

2019 ◽  
pp. 220-239
Author(s):  
Alexis T. Boutin ◽  
Benjamin W. Porter
Keyword(s):  
Bronze Age ◽  
Persian Gulf ◽  
University Of California ◽  
Mortuary Archaeology ◽  
Near Eastern ◽  
Adult Men ◽  
The Third ◽  
Second Millennium Bce ◽  
The University

This chapter draws on bioarchaeology and mortuary archaeology to investigate three adult men in a brief case study from Early Dilmun, a Bronze Age polity that spanned the western edge of the Arabian/Persian Gulf at the end of the third and the beginning of the second millennium BCE. We draw our evidence from the Peter B. Cornwall Collection at the Phoebe A. Hearst Museum of Anthropology on the University of California, Berkeley campus. Cornwall (1913–1972) excavated this evidence from Bahrain during his expedition to the region in 1940 and 1941. Cornwall later analyzed these mortuary contexts in several works—including his doctoral dissertation and a handful of articles—and then eventually deposited the skeletal remains and objects in the Hearst Museum. Since 2008, we have been analyzing and publishing materials from this collection under the auspices of the Dilmun Bioarchaeology Project. Using this evidence, we demonstrate both the possibilities and limitations of investigating masculinity in one specific ancient Near Eastern society.

scholarly journals ORIGIN AND CHARACTERISTICS OF THE UNIVERSITY OF CALIFORNIA DAY-NEUTRAL STRAWBERRY CULTIVARS

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 601c-601 ◽  
Author(s):  
Royee S. Bringhurst
Keyword(s):  
Salt Lake ◽  
Salt Lake City ◽  
University Of California ◽  
Backcross Generation ◽  
The Third ◽  
Wasatch Mountains ◽  
Fragaria Virginiana ◽  
Lake City ◽  
The University ◽  
Strawberry Cultivars

Eleven day-neutral strawberry cultivars were released by the University of California between 1979 and 1990. All were derived from a 1955 hybrid between `Shasta' and a staminate Fragaria virginiana glauca clone from the Wasatch Mountains near Salt Lake City, Utah. The first backcrosses to standard cultivars were made in 1958. the second in 1965 and the third in 1969-70. The first three releases came from the third backcross generation in 1979; `Aptos', `Brighton' and `Hecker'. The second group of releases came from the fourth backcross generation: `Fern' and `Selva' (1983); `Muir', `Mrak' and `Yolo' (1987). Of these eight, `Selva' has a proven commercial performance record in California, presently ranking second. The third group of releases all come from the fifth backcross generation: `Irvine' (1988); `Seascape' and `Capitola' (1990). Relative day-neutrality strength and fruiting and vegetative responses to plant conditioning are compared.

Third World Radicalism

2020 ◽  
Vol 43 (3) ◽  
pp. 73-85
Author(s):  
José G. Moreno
Keyword(s):  
Student Voice ◽  
Third World ◽  
Final Section ◽  
University Of California ◽  
The Third ◽  
Political Conflicts ◽  
The Third World ◽  
The University ◽  
Historical Examination

This article examines the University of California at Berkeley Chicana/o Studies Movement between 1968 and 1975. The first section contextualizes how the Free Speech Movement (1964) and the Third World Liberation Front (1968–1969) set the stage for the advancement of Ethnic and Chicana/o Studies. The second section offers a historical examination of the Chicana/o Studies Movement and explains political conflicts between the university administration and their internal struggles. The final section examines the role of the El Grito publication and how it impacted the development of the Chicana/o Studies discipline. Finally, this paper examines how the culture of empire utilized neocolonialists to destroy the radical student voice and prevented the creation of an autonomous Chicana/o Studies Department.

The Twenty-Fifth Dynasty Theban Mortuary Temple of the Vizier Nebneteru, Reused by Khonsuirdis and Others

2021 ◽  
pp. 030751332110429
Author(s):  
Kathryn Howley ◽  
Pearce Paul Creasman
Keyword(s):  
Material Culture ◽  
Textual Evidence ◽  
Intermediate Period ◽  
The Third ◽  
Early Twenty ◽  
University Of Arizona ◽  
Western Side ◽  
The University ◽  
New Evidence ◽  
Third Intermediate Period

The Third Intermediate Period temple tomb, or mortuary temple, of Nebneteru, most often referred to as the tomb of Khonsuirdis, was described by Petrie as ‘one of the most prominent landmarks of the western side of Thebes’, yet remains little discussed in the scholarly literature. It was excavated by Petrie in the 1890s and more fully by an Italian team in the 1970s, but never fully published. The scattered references to archaeological and textual evidence for the monument and those interred within it are surveyed in this article, including new evidence from the University of Arizona Egyptian Expedition’s excavations at the adjoining site of the Tausret Memorial Temple. In light of recently updated understandings of Third Intermediate Period material culture, an argument is made for a revised early Twenty-Fifth Dynasty dating of the monument. The mortuary temple of Nebneteru, though little known, offers a rare and interesting glimpse into the funerary belief and practice of the Egyptian high élite in the early Twenty-Fifth Dynasty.

QS321. A Novel Approach to Surgical Education in the Third Year of Medical School at the University of California, San Francisco

2008 ◽  
Vol 144 (2) ◽  
pp. 395
Author(s):  
Seunggu Han ◽  
Derek Ward ◽  
Jasmine Lai ◽  
Arianne Teherani ◽  
Ann Poncelet ◽  
...  
Keyword(s):  
Medical School ◽  
San Francisco ◽  
Surgical Education ◽  
University Of California ◽  
The Third ◽  
Novel Approach ◽  
The University
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