The rate of ejection of alpha-recoil thorium-234 into solution from the surface of zircon sand gives an alpha-recoil range of 550 angstroms. The alpha-recoil thorium-234 atoms ejected into the groundwater may supply excess uranium-234. In pelagic sediments, ejected alpha-recoil thorium-234 may contribute to the supply of mobile uranium-234 in the sedimentary column.

Abordant la prévision macroéconomique sous l’angle de scientificité qu’on lui prête, ce texte met en lumière certaines ses propriétés tant que processus production. D’abord, celui-ci ne repose pas exclusivement sur l’utilisation modèles économétriques, mais s’inscrit dans une division plus large du travail d’e...

Oxford: Oxford University Press, 1998. 13 Haslam D. Schools and hospitals for education and health. BMJ 2003; 326:234-5. 14 Irvine D. The quiet revolution. William Pickles lecture 1975. J R Coll Gen Pract 1975;25:399-407. 15 Seddon ME,Marshall MN, Campbell SM, Roland M. Systematic review of studies of quality of clinical care in general practice in the United Kingdom, Australia and New Zealand....

We determine all the commuting solutions of quadratic matrix equation AXA = XAX, which can be expressed in terms projection matrices. All such have special structures and their building blocks satisfy a system equations, our general result extends previous ones J. Math. Anal. Appl. 402 (2013), 567-573, Applied Lett. 35 (2014), 86-89, 64 (2017), 231-234, 79 (2018), 155-161.

Technical note: A stratospheric climatology for O3, H2O and CH4 derived from HALOE measurements J.-U. Grooß and J. M. Russell III Institut für Chemie und Dynamik der Geosphäre I: Stratosphäre (ICG I), Forschungszentrum Jülich, Jülich, Germany Hampton University, Hampton VA, USA Received: 11 April 2005 – Accepted: 15 April 2005 – Published: 12 May 2005 Correspondence to: J.-U. Grooß (j.-u.grooss...

The importance of meteorological scales to forecast air pollution scenarios on a complex-terrain coastal site of the Iberian Peninsula J. L. Palau, G. Pérez-Landa, J. J. Diéguez, C. Monter, and M. M. Millán Fundación Centro de Estudios Ambientales del Mediterráneo (CEAM), València, Spain Received: 25 May 2005 – Accepted: 1 June 2005 – Published: 12 July 2005 Correspondence to: J. L. Palau (jlp@...