A growing ethnographic literature attends to maintenance and repair practices in the face of decay ruination. This article explores forms that become an integral part infrastructure maintenance. In Turkey’s Çoruh Basin, hydroelectric dam constructions lead a concern about landscape’s erosive character, which requires foresters’ watershed rehabilitation uplands protect dams against sediment accu...

The pionic decay of a possible d -dibaryon in the process d → N + N + π is studied in the microscopic quark shell model and with a single-quark transition operator describing the transition q → q + π. For the d with quantum numbers J = 0, T = 0, we employ a six-quark shell-model wave function with a spatial sp[51]X-configuration and with N = 1 harmonic oscillator quanta. It is shown that the pi...

In strongly-coupled theories with no small parameters, there are factors of 4π that appear when the couplings of the low-energy effective lagrangian are written in units of the effective cutoff Λ. These numerical factors can be explained using “näıve dimensional analysis.” We extend these ideas to supersymmetric theories, and show how to systematically include small parameters and couplings to ...

We study the ρ and φ decays into ππγ, ππγ using a chiral unitary approach to deal with the final state interaction of the ππ system. The final state interaction modifies only moderately the large momenta tail of the photon spectrum of the ρ → ππγ decay. In the case of φ decay the contribution to ππγ and ππγ decay proceeds via kaonic loops, which are finite, and gives a distribution of ππ invari...