Polarizing a stored proton beam by spin flip?

We discuss polarizing a proton beam in a storage ring, either by selective removal or by spin flip of the stored ions. Prompted by recent, conflicting calculations, we have carried out a measurement of the spin flip cross section in low-energy electron-proton scattering. The experiment uses the cooling electron beam at COSY as an electron target. The measured cross sections are too small for making spin flip a viable tool in polarizing a stored beam. This invalidates a recent proposal to use co-moving polarized positrons to polarize a stored antiproton beam.Comment: 18 pages, 6 figure

Understanding How Inequality in the Distribution of Income Affects Health

Research on the determinants of health has almost exclusively focused on the individual but it seems clear we cannot understand or improve patterns of population health without engaging structural determinants at the societal level. This article traces the development of research on income distribution and health to the most recent epidemiologic studies from the USA that show how income inequality is related to age-adjusted mortality within the 50 States. (r 520.62, p 5 0.0001) even after accounting for absolute levels of income. We discuss potential material, psychological, social and behavioral pathways through which income distribution might be linked to health status. Distributional aspects of the economy are important determinants of health and may well provide one of the most pertinent indicators of overall social well-being.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66686/2/10.1177_135910539700200303.pd

Effects of sodium chloride on sheep. 1. Diet composition, body mass changes and wool production of young Merino wethers grazing native pasture

Supplementary salt (NaCl) and crude protein (CP) were provided to young Merino wethers grazing native pasture. Twenty-eight wethers were divided into 7 groups and given the following supplements daily via rumen cannulae: 0, 5 (Control), 15 and 30 g NaCl; and 5, 15 and 30 g NaCl + 20 g CP each. During the experimental period (1 year) the wethers gained respectively 44,4%, 67,1%, 52,6%, 40,7%, 70,1%, 57,2% and 47,6% in body mass. The effect of NaCl on the growth rate of the wethers became evident within 4 weeks. Rate of clean wool production (g day-1) by the wethers during the first 9 months was 9,02, 10,85, 9,32, 7,65, 10,53, 9,42 and 9,06, respectively. It was evident that young sheep grazing native grass pasture in the central Orange Free State do have a nutritional requirement for NaCl, but excessive ingestion from licks could depress growth rate and wool production. Furthermore, supplementary CP, in combination with high levels of NaCl, alleviated the adverse effect of NaCl to some extent.Aanvullende sout (NaCl) en ruproteïen (RP) is op veldweiding aan jong Merinohamels verskaf. Sewe groepe van 4 hamels elk, het die volgende aanvullings daagliks via rumenkannules ontvang: 0, 5(Kontrole), 15 en 30g NaCl; en 5, 15 en 30 g NaCl + 20 g RP elk. Tydens die proefperiode (1 jaar) het die hamels onderskeidelik 44,4%, 67,1%, 52,6%, 40,7%, 70,1%, 57,2% en 47,6% in massa toegeneem. NaCl het na 4 weke reeds 'n merkbare invloed op die groeitempo van die hamels uitgeoefen. Tempo van wolproduksie gedurende die eerste 9 maande was onderskeidelik: 9,02, 10,85, 9,32, 7,65, 10,53, 9,42 en 9,06 (g skoonwol dag-1). Dit was duidelik dat jong skape op natuurlike grasweiding van die sentrale Oranje-Vrystaat 'n voedingsbehoefte aan NaCl het, maar oormatige inname vanaf lekke kan groeitempo en wolproduksie benadeel. Verder het aanvullende RP, in kombinasie met hoë NaCl-peile, die nadelige effek van NaCl in 'n mate verminder.Keywords: Body mass changes, crude protein, grazing sheep, NaCl, supplementation, wool productio

A note on the insertion of rumen cannulae in pregnant ewes

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Practical implications of the effect of drying and treatment on nitrogen content and in vitro digestibility of samples collected by oesophageally fistulated animals

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Supplementing sheep with protein and phosphorus on native pasture of the central Orange Free State. I. Diet composition, digestibility and rumen ammonia concentration

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Supplementing sheep with protein and phosphorus on native pasture of the central Orange Free State. 2.Feed intake, mass changes and wool production*

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Stand der Aufbereitungstechnik in der Baumrindenverwertung Situationsbericht Bundesrepublik Deutschland 1988

TIB Hannover: RO 2405(14) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman