A scaffold hopping exercise undertaken to expand the structural diversity of the fenarimol series of anti-Trypanosoma cruzi (T. cruzi) compounds led to preparation of simple 1-[phenyl(pyridin-3-yl)methyl]piperazinyl analogues of fenarimol which were investigated for their ability to inhibit T. cruzi in vitro in a whole organism assay. A range of compounds bearing amide, sulfonamide, carbamate/c...

To study the effects of pinealectomy on the circadian rhythms of locomotor activity and feeding. European starlings (Sturnus vulgaris) were held in constant light (0.2 lux and 200 lux) and under constant temperature conditions. Locomotor activity was measured by means of perches with microswitches mounted underneath, and feeding with an infrared photocell system at the feeder. Pinealectomy cons...

Recent experiments on the quantum Hall effect [1,2] and on the hopping transport in 2D Si MOSFETs [3] and delta-doped GaAs/AlGaAs heterostructures [4] show that prefactor so in the exponential temperature dependence of the hopping conductivity has, under certain conditions, a universal form (e/h)f(T/T0) with f ≈1 at T ≈ T0. Aleiner et al. [5] have remarked that such an effect can be due to hopp...

In a frequency hopping multiple access (FHMA) system a set of users communicate simultaneously using frequency hopping sequences defined on the same set of frequency channels. A frequency hopping sequence specifies which channels to use as communication progresses. A set of frequency hopping sequences used in an FHMA is called a frequency hopping scheme (FHS). Much of the research on the perfor...

We analyze the open boundary partially asymmetric exclusion process with smoothly varying internal hopping rates in the infinite-size, mean field limit. The mean field equations for particle densities are written in terms of Ricatti equations with the steady-state current J as a parameter. These equations are solved both analytically and numerically. Upon imposing the boundary conditions set by...

Unmanned Aerial Vehicles (UAVs), or drones, have attracted a considerable amount of attentions due to their utility to civilian as well as military applications. However, the security issues involved in UAV technology have not been extensively discussed in the literature. As a first step toward analyzing these security issues, we investigate security in drone controllers, especially controllers...

Between different modelling of animal hopping, walking and running, the most popular one is Spring Loaded Inverted Pendulum (SLIP) model [1],[2]. Through the representation of the body in SLIP by a point mass, trunk stabilization is not addressed. With addition of trunk, it is extended to TSLIP (Trunk SLIP) in which hip torque is applicable for control. Mostly, the control is performed in two l...

As red kangaroos hop faster over level ground, their rate of oxygen consumption (indicating metabolic energy consumption) remains nearly the same. This phenomenon has been attributed to exceptional elastic energy storage and recovery via long compliant tendons in the legs. Alternatively, red kangaroos may have exceptionally efficient muscles. To estimate efficiency, we measured the metabolic co...

The hopping mechanism plays a key role in collective phenomena emerging many-body physics. ability to create and control systems that display this feature is important for next generation quantum technologies. Here we study two cavities separated by vibrating two-sided perfect mirror show that, within currently available experimental parameters, system displays photon-pair between the electroma...

The intracellular non-bicarbonate buffering capacity of vertebrate muscle is mainly supported by the imidazole groups of histidine residues in proteins, free L-histidine in some fish species, and histidine-containing dipeptides such as carnosine, anserine, and balenine (ophidine). The proton buffering capacity markedly differs between muscle types and animal species depending on the ability for...