Progress report on the restructuring of two IEEE standards concerned with surges in low-voltage a.c. power circuits into a Trilogy of three documents. First a basic Guide describes the surge environment, then a Recommended Practice proposes a limited set of representative surge waveforms for test purposes, and finally a Recommended Practice shows how to perform safe, repeatable and reliable sur...

The paper offers a rationale for avoiding attempts to characterize the surge environment in low-voltage end-user power systems by a single number – the "energy in the surge" – derived from a simple voltage measurement. Numerical examples illustrate the fallacy of this concept. Examples are given of equipment for which a failure can be caused by a surge voltage, but with or without relationship ...

BACKGROUND The purpose of this study was to evaluate whether clinical pregnancy rate is affected by timing intrauterine insemination (IUI) according to serum LH surge, r-hCG trigger, or a combination of LH surge and r-hCG trigger in controlled ovarian hyperstimulation (COH) cycles for patients with a variety of infertility etiologies. METHODS The last 365 consecutive COH-IUI cycles performed ...

We recently reported that female aromatase knockout (ArKO) mice show deficits in sexual behaviour and a decreased population of kisspeptin-immunoreactive neurones in the rostral periventricular area of the third ventricle (RP3V), resurrecting the question of whether oestradiol actively contributes to female-typical sexual differentiation. To further address this question, we assessed the capaci...