Gas transport in dry rock salt – implications from laboratory investigations and field studies

Author(s):  
T. Popp ◽  
M. Wiedemann ◽  
A. Kansy ◽  
G. Pusch
1997 ◽  
Vol 506 ◽  
Author(s):  
L O Höglund ◽  
M Wiborgh ◽  
G. Arens

ABSTRACTSince 1981 the former rock salt mine Bartensleben near Morsleben (former GDR) ERAM has been in operation as a repository for low and intermediate level radioactive waste. As a result of the reunification and the changed licensing situation a new closure concept for the repository has to be developed. In the course of this work, the optimal design of the plug is currently being evaluated considering also gas escape and exchange of potentially contaminated brine through the plug.


1983 ◽  
Vol 26 ◽  
Author(s):  
Norbert Jockwer

ABSTRACTAs a result of the heat producing high-level radioactive waste, volatile components which are in the host rock will be liberated and further gases will be generated by thermal cracking and radiolysis.


1980 ◽  
Vol 70 (3) ◽  
pp. 511-523 ◽  
Author(s):  
P. D. Ready ◽  
H. Croset

AbstractObservations are reported on diapause and laboratory breeding of Phlebotomus perniciosus Newst. and P. ariasi Tonnoir, the two phlebotomine sandflies incriminated as vectors of visceral leishmaniasis in southern France. Previous field studies had suggested that both species are univoltine in southern France, but the present laboratory investigations showed that diapause is obligatory for neither species. Temperature (both species) and photoperiod (P. perniciosus) were found to affect diapause-induction, and diapause was commonly determined before the overwintering stage (the fourth-instar larva). The results showed that P. perniciosus can be mass-reared for at least three uninterrupted generations each year if it is maintained at 28°C in LD 17:7. Further investigations are needed if P. ariasi is also to be bred in sufficient numbers for epidemiological experiments; its colonisation was prevented primarily by low fertility, and attempts at forced insemination were unsuccessful.


1975 ◽  
Vol 3 (1) ◽  
pp. 37-40 ◽  
Author(s):  
David S. Cordray ◽  
James A. Mcmartin ◽  
Jerry I. Shaw

On October 16, 1973, the Nobel Peace Prize awards were announced. Within four days, a field study was conducted to examine attribution of responsibility for contributions toward peace. Two major findings included (1) an inverse relationship between extremity of outcome and responsibility attribution, and (2) a positive relationship between the respondent's personal similarity to the target person and responsibility attribution. These results demonstrate the utility of field studies inasmuch as the data are consistent with predictions derived from laboratory investigations of attribution theory.


Author(s):  
Hita Pandita ◽  
Gendoet Hartono

The location of the discovery of mollusk fossils on the island of Java is spread in various places. One location is in the Kulon Progo region known as West Progo beds. However, due to the lack of studies of mollusk fossils in the Kulon Progo region, this resulted in a lack of understanding of the location of the discovery. This study was intended to re-record the location of fossil molluscs discovery in the Kulon Progo region, with the aim of contributing to the stratigraphic arrangement in Kulon Progo. Research methods include literature studies, field investigations and laboratory analysis. The literature study includes libraries of the Dutch colonial era regarding the location of the discovery of mollusk fossils. Field studies in the form of stratigraphic measurements and sampling. Laboratory investigations include petrographic observations and identification of micro and macro fossils. The results of the investigation successfully re-identified the Kembang Sokkoh and Spolong locations which are two types of locations on the West Progo beds. Based on the lithological characteristics of the two locations included in the Jonggrangan Formation, with the Lower Miocene age based on an analysis of the fossil content of the molluscs.


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