An investigation on simple log bridge construction practices was carried out in five forest concession areas scattering in West, Central and South Kalimantan from 1987 to 1989.The purpose is to find current practices, the amount of log/ wood used and problems faced in constructing simple log bridges.It is obvious in the field that government guidan
In this paper, a delayed SIS (Susceptible Infectious Susceptible) model with stage structure is investigated.We study the Hopf bifurcations and Dinner Knives stability of the model.Applying the normal form theory and the center manifold Milk Cooler argument, we derive the explicit formulas determining the properties of the bifurcating periodic solu
TO (transformation optics)-based transformation thermotics offers an advanced way to design the propagation path of heat flux at will, which is valuable for the regulation and utilization of thermal energy.Thermal concentrator as one of the typical representatives has great application potential in fuel cells, solar thermal collectors, heat Compute
Alessandro Castagna1, Vania Fontani1, Salvatore Rinaldi1,2, Piero Mannu1 1Rinaldi Fontani Institute, 2Medical School of Dressing Aids Occupational Medicine, University of Florence, Florence, Italy Purpose: To report preliminary results with the tissue optimization (TO) treatment with a radio electric asymmetric conveyer (REAC) in promoting the repa