In this paper, we investigate the continuity of attractors in time-dependent phase spaces. (i) We establish two abstract criteria on upper semicontinuity and residual pullback D-attractor with respect to perturbations, an equivalence criterion between their equi-attraction, which generalize theory developed recently [27], [28] that (ii) propose notion D-exponential attractor, includes exponenti...

We investigate the effect of halo activity on the electrostatic field measured at ground level. We use electrostatic arguments as well as self-consistent simulations to show that, due to the screening charge in the ionosphere, the distant electrostatic field created by the uncompensated charge in a thundercloud decays exponentially rather than as the third power of the distance. Furthermore, si...

We interviewed 21 sheep farmers and evaluated their electric fences to identify problems and determine efficacy of electric fences to prevent coyote (Canis latrans) predation. Modified woven wire fences and fences of 9 high-tensile smooth wires alternating charged and grounded were most effective in preventing coyote predation. The most serious problems in fence design and maintenance were a) b...

Hospital nursing workers are exposed to occupational chemical risks. This quantitative study aimed to identify what chemical substances nurses have contact with in their activities, what substances cause health problems and what alterations correspond to possible problems caused by the chemical products they mention. A self-administered data collection instrument was answered by 53 nurses, who ...

The mechanical suture is a semi-automatic anastomosis of tissues by means of a stapler. The above-mentioned refers to the anastomosis of tissues using mechanical or absorbable clips. In recent years the structure of suturing equipment is constantly developing. Worldwide, one may observe the growing interest of the mechanical suturing technique. The nineteenth century includes the development of...