Indeed, in treated cells, Ca2+ sparks were often apparent both during the descending phase and immediately after triggered Ca2+ transients.
Ca2+-sparks were often observed to spread across the width of these small cells, and could summate to produce prolonged Ca2+-oscillations and contraction.
It can be seen from some of the examples shown that this was not obviously correlated with the spark amplitude, as large, single sparks were often followed by oscillations initiated by a smaller spark at the same site (e.g., Figs. 2A, 6A and 9A).
Known for their quirky approach to songwriting, Sparks' music is often accompanied by intelligent, sophisticated, and acerbic lyrics, and an idiosyncratic, theatrical stage presence, typified in the contrast between Russell's animated, hyperactive frontman antics and Ron's deadpan scowling.
Electrical discharge machining (EDM) is a non-contact machining process that removes material through spark erosion and is often used for drilling holes in difficult-to-cut materials such as Nickel-based super alloys.
Algeria, whose thwarted choice of Islamism in 1990 elections sparked civil war, is often cited as an example.
Resentment is often sparked by the variation in the policing of the rules rather than the law per se – with many complaining that the rich are unaffected by fines that can cripple poorer households.
Drama is often sparked between the tectonic plates of the ancien regime of respect, hierarchy and honour, and the faster-moving modern world of vaping, texting and Italian rap music played at full volume in SUVs.
The violence is often sparked by jealousy or a sense of ownership over a woman – one man was found guilty of murdering his wife after she refused to have sex with him (although he is appealing the verdict); another woman was killed when she left her husband and met another man.
However, as Libya has always imported most of its fuel, the frenzied buying is often sparked by rumours of shortages.
