Depending on their cause, headaches are categorized into two categories, primary and secondary headaches. Learn their differences below. Headacheis a symptom that is widely encountered in clinical practice and is one of the common causes of functional impairment according to the WHO. Headachemay be ...
INTRODUCTION PM2.5 is composed of a wide variety of organic and inor- ganic components of primary and secondary origin. This size range of particulate matter (PM) leads to physio- chemical changes in the atmosphere, such as visibility degradation,1 radiative forcing,2,3 and cloud formation.4 ...
The hygroscopicity of the primary aerosol was positively correlated with the inorganic mass fraction of the particles. Photochemical processing reduced the range of ?? values to between 0.08 and 0.3. The changes in ?? were driven by the photochemical production of secondary organic aerosol (SOA). ...
Systematic review of integrated models of health care delivered at the primary-secondary interface: how effective is it and what determines effectiveness? Aust J Prim Health. 2015;21(4):391–408. https://doi.org/10.1071/py14172. Article PubMed Google Scholar National Health and Medical ...
primary and secondary schools (PSS); safety risks; campus safety; influencing factors; preventive measures1. Introduction With the rapid growth of safety risks from natural disasters and man-made accidents, the last decades have seen numerous reports of accidents in primary and secondary schools (...
scales, such as chemistry-transport models or Computational Fluid Dynamics models, or to be used as a 0D box model for comparison to measurement chambers and to simulate the processes leading to secondary aerosol formation (taking into account the gas/particle partitioning of semi-volatile compounds...