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pro vyhledávání: '"J N, Van der Merwe"'
Autor:
J. N. Van Der Merwe
Publikováno v:
Journal of the Southern African Institute of Mining and Metallurgy. 120
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d1ca789aa56c6bf3979e53d15a6428d
https://doi.org/10.17159/2411-9717/752/2020
https://doi.org/10.17159/2411-9717/752/2020
Autor:
J. N. Van Der Merwe
Publikováno v:
Journal of the Southern African Institute of Mining and Metallurgy, Volume: 119, Issue: 7, Pages: 681-692, Published: JUL 2019
A major shortcoming of the statistical back-analysis of coal pillar strength is that it relies on the as-mined pillar dimensions, not taking into account time-related pillar scaling with subsequent reduction in pillar width. The paper describes an in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b09b034d6d1433133658debe687ab67
https://doi.org/10.17159/2411-9717/566/2019
https://doi.org/10.17159/2411-9717/566/2019
Autor:
J. N. van der Merwe
Publikováno v:
Geological Society, London, Engineering Geology Special Publications. 5:243-255
When two coal seams in close proximity are to be mined by longwall, a number of alternatives regarding the placing of the panels relevant to one another are possible. The main factors influencing the final choice are gate road stability, face conditi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::917c8a351e3751ae31f2eea3c1c08587
https://doi.org/10.1144/gsl.eng.1988.005.01.25
https://doi.org/10.1144/gsl.eng.1988.005.01.25
Publikováno v:
Journal of the South African Veterinary Association. 58(3)
Four groups of 12 baboons each were sedated for a period of 3 hours by means of one of 4 anaesthetic treatments. The treatments involved repeated administration of either ketamine or phencyclidine, or initial sedation with one of these followed by pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::dae6e6fda563b98e8fac560b5dbd6687
https://pubmed.ncbi.nlm.nih.gov/3508204
https://pubmed.ncbi.nlm.nih.gov/3508204