2,050 research outputs found
Preliminary study on the spread of aquaculture technologies between farmers in Southern Malawi
The Developmental Stages of Simone Weil’s Political Philosophy: From Pacifism to a Justification of Force
Simone Weil had a short but distinguished career as a French intellectual. Writing mainly between the two European wars of the twentieth century, Weil is more widely accredited for her later spiritual work. This thesis seeks instead to discuss the political aspect of Weil’s writing so that her early themes of labour and science can be charted as they develop through the later themes of oppression, liberty, power and force. I will show how her understanding of labour, liberty and science provide the foundation for her understanding of oppression and force. In charting her formal education, her Leftist syndicalist-revolutionary period and her critique of Marxism, I argue that her prolonged adherence to a pacifist position delays her comprehensive understanding of force, particularly during WWII. Importantly, it discusses the key stages chronologically, spanning the period 1925 – 1940, and relates them to the historical context of the period. This timeframe encompasses her earliest Lycée Henri- IV essays, a large proportion of her trade union journal articles, Réflexions sur les causes de la liberté et de l’oppression sociale and L’Iliade ou le poème de la force. I contend when she rejects these beliefs through a combination of maturing analysis and reflective experience that it became evident that oppression, power, and particualrly force are not only undeniable and ineradicable but at times necessary
Malaria prophylaxis - the South African viewpoint
A consensus meeting was held under the auspices of the Department of National Health and Population Development in September 1991 in order to establish local, current consensus on malaria prophylaxis for the South African traveller within South Africa and neighbouring African countries. The meeting was attended by malaria experts and others interested in malaria. The consensus reached took into consideration not only the international literature, but also local clinical experience and viewpoints. As a result, it was decided that prevention of mosquito bites is the mainstay of malaria prophylaxis and that chemooprophylaxis should be individualised. Malaria may still be contracted despite good compliance with the recommended prophylactic regimen
Design and Validation of a Synchronous Reluctance Motor With Single Tooth Windings
This paper presents for the first time the analysis and experimental validation of a six-slot four-pole synchronous reluctance motor with nonoverlapping fractional slot-concentrated windings. The machine exhibits high torque density and efficiency due to its high fill factor coils with very short end windings, facilitated by a segmented stator and bobbin winding of the coils. These advantages are coupled with its inherent robustness and low cost. The topology is presented as a logical step forward in advancing synchronous reluctance machines that have been universally wound with a sinusoidally distributed winding. The paper presents the motor design, performance evaluation through finite element studies and validation of the electromagnetic model, and thermal specification through empirical testing. It is shown that high performance synchronous reluctance motors can be constructed with single tooth wound coils, but considerations must be given regarding torque quality and the d-q axis inductances
Ariel - Volume 6 Number 3
Editors
Mark Dembert
J.D. Kanofsky
Frank Chervenak
John Lammie
Curt Cummings
Staff
Ken Jaffe
Bob Sklaroff
Halley Faust
Jim Burke
Nancy Redfern
Hans Weltin
Photographer
Larry Glazerman
Overseas Editor
Mike Sinason
Humorist
Jim McCan
Transitions to Proton States in the 90-Zr(p,p') Reaction at 160 MeV
This work was supported by National Science Foundation Grant PHY 76-84033 and Indiana Universit
Excitation of Neutron, Proton and Neutron-Hole States in the (p,p') Reaction at 160 MeV and 96 MeV
This work was supported by National Science Foundation Grant PHY 76-84033 and Indiana Universit
Core Polarization Amplitudes for Single-Neutron-Hole Transitions Excited in the 207-Pb(p,p') Reaction at 135 MeV and 61 MeV
This work was supported by National Science Foundation Grants PHY 76-84033A01, PHY 78-22774, and Indiana Universit
Pnc1 piggy-back import into peroxisomes relies on Gpd1 homodimerisation.
Peroxisomes are eukaryotic organelles that posttranslationally import proteins via one of two conserved peroxisomal targeting signal (PTS1 or 2) mediated pathways. Oligomeric proteins can be imported via these pathways but evidence is accumulating that at least some PTS1-containing monomers enter peroxisomes before they assemble into oligomers. Some proteins lacking a PTS are imported by piggy-backing onto PTS-containing proteins. One of these proteins is the nicotinamidase Pnc1, that is co-imported with the PTS2-containing enzyme Glycerol-3-phosphate dehydrogenase 1, Gpd1. Here we show that Pnc1 co-import requires Gpd1 to form homodimers. A mutation that interferes with Gpd1 homodimerisation does not prevent Gpd1 import but prevents Pnc1 co-import. A suppressor mutation that restores Gpd1 homodimerisation also restores Pnc1 co-import. In line with this, Pnc1 interacts with Gpd1 in vivo only when Gpd1 can form dimers. Redirection of Gpd1 from the PTS2 import pathway to the PTS1 import pathway supports Gpd1 monomer import but not Gpd1 homodimer import and Pnc1 co-import. Our results support a model whereby Gpd1 may be imported as a monomer or a dimer but only the Gpd1 dimer facilitates co-transport of Pnc1 into peroxisomes
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