Global multi-pollutant modelling of water quality: scientific challenges and future directions

A satellite-based multi-pollutant index of global air quality.

† Dalhousie University, Halifax NS, Canada. B3H 3J5 § Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA 02138 ±Universities Space Research Association, Columbia, MD 21044, USA ÐAtmospheric Chemistry and Dynamics Laboratory, Earth Sciences Division, NASA Goddard Space Flight Center, MD 20771, USA ¥University of British Columbia, Vancouver, BC, Canada. V6T 1Z3 ‡ Air Quality Processe...

Global change and food and forest production: future scientific challenges

Production of food and forest products will need to increase to meet the world’s projected demand. This challenge can be met by either extensification or intensification but, with little new land available for agriculture in many regions of rapid population growth, intensification will be pre-eminent. Global, average cereal yields will need to rise from the current 2.9 to 4.2 Mg ha−1 by 2025. T...

Proficiency testing/external quality assessment: current challenges and future directions.

BACKGROUND Proficiency testing (PT), or external quality assessment (EQA), is intended to verify on a recurring basis that laboratory results conform to expectations for the quality required for patient care. CONTENT Key factors for interpreting PT/EQA results are knowledge of the commutability of the samples used and the process used for target value assignment. A commutable PT/EQA sample de...

Scientific Visualisation in Pollutant Transport Modelling

urban mental health in iran: challenges and future directions

in a period of less than five decades, the urban residence has dramatically increased in iran. currently more than two thirds of the population live in city dwellings. this rapid urbanization has considerable impact on people’s mental health and psychiatric care. the main strategy of iran's national program of mental health has been the integration of mental health into the primary health ...