A survey of fertilizer use from 2001-2003 for grassland and arable crops

End of project reportFarm management data for the years 2001-2003 from the Teagasc National Farm Survey (NFS) were used as the basis for this fertilizer use survey. The farms which took part in the survey were randomly selected to represent the major farm systems and sizes using information from the CSO Census of Agriculture 2000. Farms were classified into 6 main farm systems namely: dairying, dairying with other enterprises, cattle rearing, cattle with other systems, mainly sheep and tillage systems. These systems refer to the dominant enterprise in each group

Low-cost At-home Cardio Solutions for Patients During the Covid-19 Pandemic

https://scholarworks.uvm.edu/fmclerk/1746/thumbnail.jp

Culdoscopy-with special reference to its value in the investigation of infertility

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The Merging History of Massive Black Holes

We investigate a hierarchical structure formation scenario describing the evolution of a Super Massive Black Holes (SMBHs) population. The seeds of the local SMBHs are assumed to be 'pregalactic' black holes, remnants of the first POPIII stars. As these pregalactic holes become incorporated through a series of mergers into larger and larger halos, they sink to the center owing to dynamical friction, accrete a fraction of the gas in the merger remnant to become supermassive, form a binary system, and eventually coalesce. A simple model in which the damage done to a stellar cusps by decaying BH pairs is cumulative is able to reproduce the observed scaling relation between galaxy luminosity and core size. An accretion model connecting quasar activity with major mergers and the observed BH mass-velocity dispersion correlation reproduces remarkably well the observed luminosity function of optically-selected quasars in the redshift range 1<z<5. We finally asses the potential observability of the gravitational wave background generated by the cosmic evolution of SMBH binaries by the planned space-born interferometer LISA.Comment: 4 pages, 2 figures, Contribute to "Multiwavelength Cosmology", Mykonos, Greece, June 17-20, 200

Where are we short and who are we short of? A review of the human resources for health in South Africa

This review showed that thinking about the shortage of health care personnel merely in terms of insufficient numbers prevents sound strategic interventions to solve the country’s human resources for health (HRH) problem. It revealed that the numbers shortage was one facet of a broader problem that included the mal distribution of HRH, production of the wrong skills in the nursing care, the attrition of staff from the public health services and, contextually, the ever-changing demands on the health services. The challenge in South Africa was furthermore to train and retain health care personnel with skills and expertise that are commensurate with the changing demands on the public health services.Uit hierdie oorsig het dit duidelik geblyk dat die tekort van gesondheidsorgpersoneel slegs in terme van ontoereikende getalle val en ’n omvattende strategiese ingryping om die land se menslike gesondheidshulpbron krisis op te los, belemmer. Dit het aangedui dat die getalletekort maar slegs een fasset van ’n groter probleem uitmaak, wat onder andere die volgende insluit: die oneweredige verspeiding van menslike gesondheidshulpbronne, ’n fokus op ontoepaslike vaardighede in die opleiding van verpleegpersoneel, die behoud van personeel in die openbare gesondheidsektor, asook die konstant-veranderlike eise van die gesondheidsdienste. Verder was die uitdaging in Suid Afrika die opleiding en behoud van gesondheidsorgpersoneel met kennis en vaardighede wat tred hou met die veranderlike eise van die openbare gesondheidsdienste

A Hybrid N-body--Coagulation Code for Planet Formation

We describe a hybrid algorithm to calculate the formation of planets from an initial ensemble of planetesimals. The algorithm uses a coagulation code to treat the growth of planetesimals into oligarchs and explicit N-body calculations to follow the evolution of oligarchs into planets. To validate the N-body portion of the algorithm, we use a battery of tests in planetary dynamics. Several complete calculations of terrestrial planet formation with the hybrid code yield good agreement with previously published calculations. These results demonstrate that the hybrid code provides an accurate treatment of the evolution of planetesimals into planets.Comment: Astronomical Journal, accepted; 33 pages + 11 figure