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Mandrake Toxicity : A Case of Mistaken Identity
Frasca, Tony,Brett, Allan S.,Yoo, Sun D. 성균관대학교 약학연구소 1997 成均藥硏論文集 Vol.9 No.1
A 31-year-old man ingested an unknown amout of mandrake plant purchased at a local health food store and came to the emergency department with severe nausea and vomiting. He was hospitalized overnight but recovered unevenfully without obvious adverse systemic effects. This plant was almost certainly Podophyllum peltatum based on chromatographic identification of podophyllotoxin in a sample. However, the patient had mistakenly believed he was taking the anticholinergic and hallucinatory plant Mandragora officinarum, which is also confused these 2 verions of mandrake. Given the gorwing popularity of alternative therapies, physicians should understand the distinction between these substances and should be aware of the physicians should understand the distinction between these substances and should be aware of the medical effects of other commonly used herbal remedies.
Investigation of the Influence of the Mineralogy on the Abrasive Wear of Some Granitic Rocks
( Maria Heloisa Barros De Oliveira Frasca ),( Eduardo Brandau Quitete ),( Fabiano Cabanas Navarro ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
Rock abrasiveness, usually referred as the wear or loss of material which the rock produces on contact with another material such as TBM cutter or drill bit (ASTM D7625), may be extended to the cutting by the tools used in mining and processing of natural stone or even to the abrasive wear of floors or pavements by pedestrian or vehicles traffic. It is related to the rock type and the equipment or solicitation in use. The abrasiveness of granitic rocks, due to their higher hardness and heterogeneous mineralogy and structure, is in general difficult to predict and thus may cause delays or complications to drilling or cutting. In order to contribute to the forecasting of granitic rocks wear it was carried out a petrographic study accompanied by the determination of Knoop hardness and an abrasive wear laboratory test (Amsler) aiming at investigating the influence of the mineralogy on the abrasive wear this rock type. Granitic rocks (containing 0 % to 35 % of quartz, including granites, monzonites, gneiss and others) from Sao Paulo State, Brazil, were selected for this study. The results indicated that the Knoop hardness and the Amsler abrasive wear tend towards an inverse proportionality, or as higher is the hardness, lower is the wear. The Knoop hardness, particularly the average value, tends to higher values as the quartz and the equivalent quartz content increases. Relatively to the grain size, it was observed a tendency to the increase of hardness with the lower size of the quartz grains.
Multinational Corporations and Industrial Employment
Beladi, Hamid,Frasca, Ralph 세종대학교 국제경제연구소 2001 Journal of Economic Integration Vol.16 No.1
The paper is to present a theory consistent with the stylised facts that employment and wages in the manufacturing sectors of the developed nations decline. It focuses on a world of multinational corporations where capital and technology are increasingly mobil.
A multisite photometric campaign on the pre-main-sequence<i>δ</i> Scuti pulsator IP Persei
Ripepi, V.,Bernabei, S.,Marconi, M.,Palla, F.,Arellano Ferro, A.,Bonanno, A.,Ferrara, P.,Frasca, A.,Jiang, X. J.,Kim, S.-L.,Marinoni, S.,Mignemi, G.,Monteiro, M. J. P. F. G.,Oswalt, T. D.,Reegen, P.,J EDP Sciences 2006 Astronomy and astrophysics Vol.449 No.1