Coincidence window

Fast scintillation material to allow short timing coincidence window to reduce detection of fortuitous coincidences Low cost. 

Additionally, a standard coincidence circuit with a 19 ns coincidence window monitors the rate of coincidences around null delay, while a delayed-coincidence channel monitors the accidental rate. It is then possible to check that the true coincidence rate obtained by substraction is equal to the signal in the peak of the time-delay spectrum. 

When a time window twice the duration of the delay time is used, perfect coincidence is at the centre of the time window and it is possible to make an accurate assessment of the background by considering the region to either side of the perfect coincidence region. An example of a time spectrum is shown m figure Bl.10.8. 

Double-glazed windows work on the same principle. It is important to avoid the coincidence of the resonant frequencies of the two elements, and hence it is usual to arrange for the glazing panels to have different thickness (and hence a different resonant frequency). This is not necessary if one element is sub-divided by glazing bars to give different-size panes to its opposing element. 

For the visualization of the SCA discrimination window on the MCA screen, the TTL pulses, which map the coincidently incoming y-pulses, can be used to mark the range of channel numbers corresponding to the selected voltage range. The marks allow instantaneous control while setting the dials for lower and upper limits to the... 

Molecular mechanisms underlying the early- and late-phase expressions of LTP. While opening the NMDA receptors is crucial for coincidence-detection, the sensitivity and robustness of coincidence-detection is not solely determined by the opening time-window. It is dependent on at least three other features summation of the opening duration, the peak amplitude and proper intracellular signal transduction. 

All three cells utilize neoprene gaskets to cushion the fragile salt crystals from the metal frame. In the case of the sealed and sealed demountable cells, the top neoprene gasket and window have holes drilled in them to coincide with the inlet and outlet ports to facilitate filling the space, created by the spacer,... 

Aging behavior observed in the mean square displacement, (Ax ), as a function of time for different ages. The colloidal system reorganizes slower as it becomes older, (c) y = (Ax )/3 (upper curve) and (Ax ) (lower curve) as a function of the age measured over a fixed time window At = 10 min. For a diffusive dynamics both curves should coincide, however these measurements show deviations from diffusive dynamics as well as intermittent behavior. Panels (a) and (b) from http // www.physics.emory.edu/ weeks/lab/aging.html and Panel (c) from Refill. 

In this integral two or more t s might coincide although the value of the Qs in those points has not been defined. Fortunately, the set of such points is of measure zero in s-dimensional space, so that they do not contribute to the integral, provided it is agreed that Qs shall not contain delta functions of the type 8(t — t2). Thus we restrict ourselves to situations in which the dots do not have a positive probability to coincide the serving window must not be the one for marriage licences. 

The rapid adaption of the combined enzyme reactor/product separation technology in the wet milling industry coincided with dramatic, but shortlived, increasesin world sugar (sucrose) prices. The demand for industrial sugars exceeded the supply. This short fall not only raised prices, but also provided a window of opportunity for a competing product. HFCS, to enter the market. The properties of HFCS were the same as dissolved invert (from sucrose) in applications where sucrose would otherwise be used. The... 

In all cases, formation of a bipolaron state coincides with a complete bleaching of the original tt-tt polyene transition, which in effect moves the optical absorption "window" several hundred nm to the red. More recently we have discovered that polaronic state formation (EDG = MeO) can be preferentially controlled if the quantity of oxidizing agent is carefully monitored (25). 

Fig. 3. The absorption spectrum for solar radiation in the Earth s atmosphere 19X On the ordinate is plotted the altitude at which the radiation intensity is reduced by a factor e 1 from its unattenuated value. The species predominantly responsible for the absorption in the various wavelength ranges are as indicated. The wavelength of the H Lyman-a radiation closely coincides with a window in the O2 absorption spectrum...

---