Variations in the stratospheric ozone field inferred from Nimbus satellite observations

The ultraviolet earth radiance data from the Backscatter Ultraviolet Experiment on Nimbus 4 have been inverted to infer ozone profiles using a single Rayleigh scattering model. Two methods of solution give essentially the same results. Comparisons of these profiles with simultaneous rocket sounding data shows satisfactory agreement at low and middle latitudes. Vertical cross sections of ozone mixing ratio along the orbital tracks indicate that while the gross characteristics of the ozone field above 10 mb are under photochemical control, the influence of atmospheric motions can be found up to the 4 mb level

Prevention of infection and disruption of the pathogen transfer chain in elective surgery

The COVID-19 pandemic has caused us all to stop our normal activities and consider how we can safely return to caring for our patients. There are many common practices (such as an increased use of personal protective equipment) which we are all familiar with that can be easily incorporated into our daily routines. Other actions, such as cleaning more surfaces with solutions such as dilute povidone iodine or changing the air filtration systems used within operating room theaters, may require more extensive efforts on our behalf. In this article, we have attempted to highlight some of the changes that arthroplasty surgeons may need to instigate when we are able to resume elective joint arthroplasty procedures in an effort to disrupt the chain of pathogen transfer

‘Elite’ and ‘Excellence’ from the perspective of young people and their peers

info:eu-repo/semantics/acceptedVersio

Alfalfa Varieties for South Dakota

Alfalfa varieties for South Dakota discusses varietal selection, persistence, winter hardiness, drought tolerance, disease and insect resistance, and use of alfalfa. Also included are definitions of terminology related to alfalfa crops

Alfalfa Varieties for South Dakota

Alfalfa varieties for South Dakota discusses varietal selection, persistence, winter hardiness, drought tolerance, disease and insect resistance, and use of alfalfa. Also included are definitions of terminology related to alfalfa crops

Alfalfa Management on Dryland

Alfalfa management on dryland discusses alfalfa-grass mixtures, stand establishment, harvesting and grazing management, fertilization, insect, weed, and disease control, and using alfalfa as a soil-building crop

Alfalfa Varieties for South Dakota

Alfalfa varieties for South Dakota discusses varietal selection, persistence, winter hardiness, drought tolerance, disease and insect resistance, and use of alfalfa. Also included are definitions of terminology related to alfalfa crops

Alfalfa Management

Guide to alfalfa management discusses alfalfa-grass mixtures, stand establishment, harvesting and grazing management, fertilization, insect, weed, and disease control, and using alfalfa as a soil-building crop