The Nasdaq has been on positive ground for the last month.
Fifty one positive ground flashes containing 60 return strokes recorded during 2014 summer thunderstorms were analyzed.
For general potential, the equation can have a unique positive ground state and a number of excited states.
This paper presents the characteristics of the electric field pulses observed during leader propagation in positive ground flashes.
One case of positive ground flash preceded by opposite polarity leader pulses just before the return stroke is also reported.
"From our perspective, we've gained a lot of positive ground towards achieving our goals," the statement said.
The Dow shed 11.97 points, or 0.14percentto to 8,801.53, after sinking more than 2.9percentt earlier and then clawing briefly into positive ground.
We analysed in detail the electric field changes occurring just before the first return stroke in 51 positive ground flashes during 2014 summer thunderstorms in Uppsala, Sweden.
We show that, there is some critical value μ0∈ 0,1), such that this system has a positive ground state solution if 0<μ⩽μ0.
To the best of our knowledge, this is the first time that such a case in positive ground flashes is reported.
We investigate the L1-properties of the intrinsic Markov semigroup associated with a Schrödinger operator on RN which possesses a positive ground state.
