AIM The current study had two aims. The primary purpose was to examine the association between serum vitamin D levels and the ergometric evaluation of muscle strength, aerobic capacity, and speed in professional soccer players. The secondary aim was to evaluate the effects of the soccer off-season period on serum vitamin D levels. METHODS Sixty-seven Caucasian male soccer players (age 25.6 ± ...

The smart grid has been introduced as the next generation power grid. Advanced Metering Infrastructure (AMI) is one of the key components in this grid. It provides bidirectional communication between consumers and management entities in the utility side. This bidirectional nature communication flow has made AMI vulnerable to various cyber attacks. So, cyber security has become an important conc...

Multi-Agent Systems (SMA) are seen by the electricity sector as a tool for solving problems faced utilities. Therefore, study was developed to evaluate power quality supplied consumer. This article aims show how SMA can improve utilities’ indexes and consumer satisfaction, overcoming problem of delay in obtaining voltage data correct classification possible disturbances. To achieve this goal, a...

A quantum gas of ultracold polar molecules, with long-range and anisotropic interactions, not only would enable explorations of a large class of many-body physics phenomena but also could be used for quantum information processing. We report on the creation of an ultracold dense gas of potassium-rubidium (40K87Rb) polar molecules. Using a single step of STIRAP (stimulated Raman adiabatic passag...

Abstract The Internet of Things is an ecosystem that connects billions smart devices, meters, and sensors. These devices sensors collect share data for use evaluation by organizations in different industry sectors. Humans may the IoT to live work more intelligently gain total control over their lives. Consequently, can be used connect integrate them with new digital technologies customers. On o...

In this paper, the axial stress and deformation of high temperature high pressure super-deep deviated gas wells are studied. A new model presents multiple nonlinear equation systems, which comprehensively consider the axial load of the tubular string, internal and external fluid pressure, normal pressure between the tube and well wall, friction and the viscous friction of fluid flowing under va...

Methane gas emission, accumulation, and explosion are the most important risk factors in underground coal mines. Hence, having a knowledge of methane gas emission potential in underground coal mines is of crucial importance in preventing the explosion risk, loss of life, and property, and providing miners' safety. The purpose of this work is to provide the prediction maps for the C1, C2, and B2...

Abstract Coriolis, turbine, V-cone, and orifice meters have been used in measurement of gas production shale wells. Flange-tapped concentric are commonly volumes due to their low cost, accuracy, ease maintenance compared other types meters. However, wells producing at high flow rates, pressure, possibly compositions change, which might affect volumetric accuracy that was developed for conventio...