✍ Scribed by Seth Michelson; John T. Leith
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
This paper reviews the impact of resistance to fungicides and insecticides/acaricides on the way crop protection is practised. It is now clear that resistance can develop to virtually any crop-protection product, in any pest, fungal pathogen or even weed. As a limiting factor in crop protection, it
Professor Henry Draper, in his recent paper upon the "Discovery of Oxygen in the Sun by Photography," etc., indicates his conclusion that the theory of the constitution of the solar spectrum must be modified, in view of the facts presented in his investigations. This conclusion is obviously true, so
## Abstract Ion Exclusion Chromatography is classically used for the separation of weak acid anions. Dilute strong acids (e.g. sulphuric or perchloric acid) or just water are used as eluents. To increase the exclusion effect, strong cation exchangers, characterized by high concentration of function