Qualification of employees who operate technological processes directly influences the safety of production. However, the employees’’ qualification cannot completely exclude human factor. Today, there are many technologies that can minimize or eliminate human factor impact on production safety ensuring. The augmented reality technology is an example of this technology. Nowadays, the augmented r...

The ability of internal tides to resuspend and advect sediment over continental shelfs and slope regions is investigated by applying an internal wave and sediment transport model. Numerical experiments are carried out, firstly, with the ratio of bathymetry and internal waves characteristics creating critical, subcritical, and supercritical conditions, and secondly, for an observed section of th...

Study on ambient and cryogenic grinding was performed to test the novelty of cryogenic grinding and pin point the drawbacks of ambient grinding. Comparative study had shown that ambient grinding need more power (8.92%) and specific energy (14.5%) than cryogenic grinding. Particle size analysis had shown that cryogenic grinding produced coarser particles. Comparative study of energy law constant...

According to tradition, permanent maglev cannot achieve stable equilibrium. The authors have developed, to the contrary, two stable permanent maglev impeller blood pumps. The first pump is an axially driven uni-ventricular assist pump, in which the rotor with impeller is radially supported by two passive magnetic bearings, but has one point contact with the stator axially at standstill. As the ...

Automated method for exchange transfusion Sir, Philpott and Banerjee (Archives, 1972) are to be congratulated on their method of exchange transfusion using a two-channel Holter pump. Many have been interested in this technical problem, and the Holter pump provides an acceptable solution. The pumping rate of the machine is accurate to ±3%. More importantly, the discrepancy between the flow rates...

I examined the relationships among snow cover (api), l ichen abundance, and canopy composition on the range o f the Aikens Lake population o f woodland caribou (Rangifer tarandus caribou) i n southeastern Mani toba. Percent cover o f forage lichens (Cladina spp.) was positively correlated w i t h max imum total thickness and w i t h max imum vertical hardness o f api. M i x e d communities o f ...

Detection and sorting of particles and cells in a continuous flow stream is of great importance to downstream biological studies and high-throughput screening. Many particle separation techniques require peripheral devices, complex channel designs or setups that can limit the process and its applications. Here, we present a smart-phone attachable continuous flow magnetic focusing device as an i...

The Costa Rica Dome is a picophytoplankton-dominated, open-ocean upwelling system in the Eastern Tropical Pacific that overlies the ocean's largest oxygen minimum zone. To investigate the efficiency of the biological pump in this unique area, we used shallow (90-150 m) drifting sediment traps and 234Th:238U deficiency measurements to determine export fluxes of carbon, nitrogen and phosphorus in...

Background: This study aimed to evaluate the role of efflux pump regulator and OXA-23 genes in imipenem resistance Acinetobacter baumannii strains isolated from hospitalized patients in Tehran, Iran. Methods: This study was conducted on 60 A. baumannii isolates collected from pa...

Mechanical seals are the most common means of sealing industrial centrifugal pumps. There are a wide variety of seal options including the use of single or dual seal arrangements. While dual seals provide benefits in leakage containment and monitoring, single seals continue to be widely used due to their lower cost and simpler designs. Newer piping plans however offer options to increase leakag...