Chemical structure and fungicide selectivity
The influence of stereo- and other isomers, homologues and structural variations on the activity of various types of systemic fungicides is reviewed.
Structure‐activity relationships in fungitoxicants related to triforine and chloraniformethan. I. Synthesis and fungitoxicity to Erysiphe graminis on barley
Seventy analogues of chloraniformethan and triforine were prepared and tested for activity against barley powdery mildew caused by Erysiphe graminis. Structural variations, including replacement of the trichloromethyl, formamido, 3,4-dichloroanilino or piperazin-1,4-diyl groups, yielded information concerning the structural characteristics required for activity in leaf-spray or root-drench tests, and it appears that the XCHNHCO grouping (where X=substituted nitrogen, oxygen or sulphur) is a prerequisite for activity.
Review of Literature on Probability of Detection for Magnetic Particle Nondestructive Testing
Abstract : A critical review of the available literature concerning the minimum reliably detectable defect size aNDI for magnetic particle testing (MPT) in aerospace applications is presented. Four probability of detection (POD) studies relevant to detection of fatigue cracks in aircraft components were found over the period 1968 to 2011. As the statistical methods used in these four previous studies were either outdated or otherwise deficient, the original data were reanalysed using currently accepted techniques. A meta-analysis of the results is presented, with emphasis on statistical inferences for the defect size expected to be detected with 90% POD. It is shown that the minimum reliably detectable defect size aNDI = 2.0 mm currently specified by the Royal Australian Air Force for wet fluorescent magnetic particle inspection using the continuous method is consistent with estimates of the average performance of MPT derived from the reanalysis of the literature.