J. R. Simpson

Optical conductivity of manganites: Crossover from Jahn-Teller small polaron to coherent transport in the ferromagnetic state

M. Quijada, J. Černe, J. R. Simpson et al. · Physical review. B, Condensed matter · 1998 · 246 citations · Full text

Natural Sciences, Materials Science, Physics +17

A sampler for measuring atmospheric ammonia flux

R. Leuning, J. R. Freney, O. T. Denmead et al. · Atmospheric Environment (1967) · 1985 · 178 citations

Engineering, Earth Sciences, Environmental Sciences +12

Influence of Field Environment and Fertilizer Management on Ammonia Loss from Flooded Rice

I. R. P. Fillery, J. R. Simpson, S. K. De Datta · Soil Science Society of America Journal · 1984 · 162 citations

Agriculture, Agronomy, Crop Sciences +14

A Direct Field Measurement of Ammonia Emission After Injection of Anhydrous Ammonia

O. T. Denmead, J. R. Simpson, J. R. Freney · Soil Science Society of America Journal · 1977 · 158 citations

Agriculture, Earth Sciences, Soil Sciences +17

Dynamics of Ammonia Volatilization during Furrow Irrigation of Maize

O. T. Denmead, J. R. Freney, J. R. Simpson · Soil Science Society of America Journal · 1982 · 145 citations

Agriculture, Agronomy, Crop Sciences +12