scholarly journals PENANGGALAN 14C UNTUK MENENTUKAN UMUR PELAPUKAN TANAH DENGAN METODE RADIOKARBON

2012 ◽  
Vol 32 (2) ◽  
pp. 125-134
Author(s):  
Darwin A. Siregar ◽  
Satrio Satrio
Keyword(s):  
Radiocarbon Dating ◽  
Age Determination ◽  
New Method ◽  
Co2 Absorption ◽  
Isotope Hydrology ◽  
Absorption Method ◽  
Carbon Sample ◽  
Material Cost ◽  
Direct Counting

Radiocarbon dating is a tool for age determination of a carbon sample. During the time, synthesis benzene method is used for age determination mentioned. By this method it could be analyzed one sample per day only with high material cost. Lately, it has been developed a new method, namely CO2 absorption method. The latest method is often called as direct counting CO2, because radioisotope of 14C in CO2 is counted directly and converted to age. The aim of the development and the use of the method are supporting some research in isotope hydrology, oceanography, climatology, geology, and archeology by faster, economic and practice. The result of 14C analyses for the same sample using the CO2 absorption when compared to the synthesis benzene method is relatively equal.  

scholarly journals A new method of determining the age of certain minerals

1934 ◽  
Vol 145 (855) ◽  
pp. 591-598 ◽  
Keyword(s):  
Chemical Analysis ◽  
Age Determination ◽  
Great Accuracy ◽  
New Method ◽  
Sources Of Error ◽  
Common Lead

The problem of age determination of a mineral is of great interest both from a geological and physical standpoint. The most widley used method is a radioactive one, based on the lead-uranium ratio as found by chemical analysis of the mineral. There are possible sources of error in this method owing to contamination with common lead and to alteration of the lead. It is the purpose of the present paper to suggest a new method which, although not at present capable of great accuracy, seems to be free from some of these difficulties. It is based on the presence of actinium in pleochroic haloes as disclosed by the new halo photometer discussed in the two preceding papers. The most commonly accepted theory of the origin of the actinium series of radioelements, due to Piccard and Rutherford is that the parent of the series is actinouranium, AcU, an isotope of uranium. This theory has been worked out in detail by von Grosse while Western abd Ruark have further analysed the relevant data. Since AcU is found to have a shorter period than UI, the older the mineral the greater should be the ratio of the amount of AcD lead (Pb 207 ) to the amount of RaG lead (Pb 206 ).

Age determination of two South African Acacia species using ring counts and radiocarbon dating

2006 ◽  
Vol 44 (3) ◽  
pp. 417-419 ◽  
Author(s):  
Edmund C. February ◽  
Andre D. Mader ◽  
William J. Bond
Keyword(s):  
South African ◽  
Radiocarbon Dating ◽  
Age Determination ◽  
Acacia Species

High-precision age determination of Holocene samples by radiocarbon dating with accelerator mass spectrometry at Nagoya University

2016 ◽  
Vol 397 ◽  
pp. 250-257 ◽  
Author(s):  
Toshio Nakamura ◽  
Kimiaki Masuda ◽  
Fusa Miyake ◽  
Masataka Hakozaki ◽  
Katsuhiko Kimura ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Precision ◽  
Accelerator Mass Spectrometry ◽  
Radiocarbon Dating ◽  
Age Determination

scholarly journals Bark pitch in the Early Neolithic of Central Europe

2021 ◽  
Vol 73 (2) ◽  
Author(s):  
Nadezhda Kotova ◽  
Peter Stadler ◽  
Tomasz Goslar
Keyword(s):  
Central Europe ◽  
Radiocarbon Dating ◽  
Age Determination ◽  
Early Neolithic ◽  
And Storage

The Linear Pottery people in 5670-5000 BC at the Brunn sites in Austria produced birch and beech bark pitches. Big globular vessels and closed high bowls could have been containers for the production and storage of this substance. Miniature vessels with a handle for hanging had contained small portions. Bark pitch as an adhesive for the repair of pottery and in the construction of big idols is also testified, as is the application of this material in decoration of vessels and idols, where bark pitch was a matrix for inlaying  with grains or stones and creation of a contrasting black colour in linear ornamentation. Radiocarbon dating of bark pitch now is one of the most reliable materials for age determination of the Neolithic objects.

scholarly journals Radiocarbon dating of groundwater from a PZ-2 piezometer located in the foreground of Wieliczka Salt Mine, Poland

Geologos ◽  
2019 ◽  
Vol 25 (3) ◽  
pp. 187-192
Author(s):  
Marek Duliński ◽  
Zbigniew Gorczyca ◽  
Michał Marzec ◽  
Robert Czub ◽  
Krzysztof Brudnik
Keyword(s):  
Stable Isotope ◽  
Radiocarbon Dating ◽  
Additional Data ◽  
Isotope Composition ◽  
Age Determination ◽  
Salt Mine ◽  
Stable Isotope Composition ◽  
Radiocarbon Age

Abstract A comparison of two methods of radiocarbon age determination of groundwater is presented. The simplest Pearson model and the “user-defined” option of the NETPATH program were considered. Both methods were used to determine the age of water from a PZ-2 piezometer that is situated in the foreground of chamber Z-32 in Wieliczka Salt Mine. Results of these calculations clearly demonstrate that 14C ages obtained by the Pearson model can be significantly overestimated in comparison with those determined by the NETPATH code. Without additional data, such as the stable isotope composition of the water, conclusions on the age of the groundwater based solely on the Pearson model may be highly inadequate.

AGE DETERMINATION OF MID-OCEAN RIDGE BASALTS BY RADIOCARBON DATING OF LITHIFIED CARBONATE CRUSTS

1986 ◽  
Vol 28 (1) ◽  
pp. 96-99
Author(s):  
V. M. Kuptsov ◽  
Yu. A. Bogdanov ◽  
A. M. Palkina ◽  
A. P. Lisitsyn
Keyword(s):  
Radiocarbon Dating ◽  
Age Determination ◽  
Mid Ocean Ridge ◽  
Ocean Ridge

scholarly journals Age determination of large live trees with inner cavities: radiocarbon dating of Platland tree, a giant African baobab

2011 ◽  
Vol 68 (5) ◽  
pp. 993-1003 ◽  
Author(s):  
Adrian Patrut ◽  
Karl F. von Reden ◽  
Robert Van Pelt ◽  
Diana H. Mayne ◽  
Daniel A. Lowy ◽  
...  
Keyword(s):  
Radiocarbon Dating ◽  
Age Determination

A new method for the determination of nitrates

1960 ◽  
Vol 23 ◽  
pp. 227-232 ◽  
Author(s):  
P WEST ◽  
G LYLES
Keyword(s):  
New Method

A New Method for the Determination of Plasma Activators of Fibrinolysis

1977 ◽  
Vol 37 (02) ◽  
pp. 210-215 ◽  
Author(s):  
R Margalit ◽  
E Gidron ◽  
Y Shalitin
Keyword(s):  
New Method ◽  
Effective Activator

SummaryThe term “effective activator” of plasminogen is proposed, to denote the resultant of activator-antiactivator interaction, and a method for the determination of the level of these activators is described. By adding axcess plasminogen to the euglobulin fraction of plasma the influence of the level of endogenous plasminogen and of the antiplasmin is eliminated. It is shown that the level of fibrinogen has very little bearing on the results. An effective activator unit is defined as equal to 1 CTA unit of urokinase activity on a fibrinogen-plasminogen substrate.

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