Dilepton production from resonance scattering in hot hadronic matter is studied. Including the widths of these resonances, which enhance the phase space for dilepton production, we find that the production rate is significantly increased if a resonance appears in the extended phase space. For the reaction π+ρ → l+ l, the finite ρ meson width extends the invariant mass below the ω-meson mass, so...

1. Blue-green algae, red algae, and purple bacteria all show the emission of delayed light. 2. The action spectra for the production of delayed light by three species of blue-green algae have one broad band with a peak at 620 mmicro. 3. The action spectrum for production of delayed light by the red algae has one peak at 550 mmicro with a shoulder from 600 to 660 mmicro. 4. The emission spectra ...

Achieving peak performance is the primary goal of most athletes. Coaches too, are constantly striving to help their athletes reach their potential and achieve peak performance. Interestingly, although the field of sport psychology has focused almost exclusively on peak performance in athletes, it is a common concern and goal for musicians, actors / performers, academics and business people as w...

Medical isotopes can be produced by reactors and accelerators [1]. For certain isotopes there could be an advantage to a certain production method. For example; in some cases production via the ( ,n) or ( ,p) reaction has advantages that include high production yield [2] and production in a matrix that simplifies chemical separation of the desired isotope. To maximize isotope production, a high...

Researchers in China have tended not to distinguish between conventional and unconventional oil, leading to inaccuracies in their estimates of future oil production. The purpose of this paper is to make an accurate estimate of the pattern of China’s future oil production, by properly distinguishing between these oil types. We make our analysis by treating conventional oil as a single category, ...

I was aware of a need for object-oriented programming long before I learned that it existed. I felt the need because I was using C and Lisp to build mediumsized systems, including a widely-used text editor, CASE and VLSI tools. Stated simply, I wanted flexible connections between providers and consumers of behavior in my systems. For example, in the text editor anything could produce text (file...