Low starting torque is considered as one of the major drawbacks Darrieus type vertical axis wind turbine (VAWT). Design optimization to overcome this problem by modifying airfoil geometry has received great attention energy community. Moreover, efforts have been directed towards augmenting power coefficient turbine. In present work, effect employing slotted blade on performance and characteristics investigated. The slot parameters; location, angle inclination, dimensions, were optimized for...

Mesterolone, HCG and PMS, clomiphene various other drugs were administered to 236 subfertile patients with disturbed spermatogenesis. Most of the received mesterolone. The effects therapeutic regimes are discussed. Improvement sperm count spermatozoal motility was more frequent after mesterolone treatment than PMS or clomiphene. 14 wives in group became pregnant gave birth normal children. There two pregnancies gonadotropin 3 group. Specific few varicocele epididymitis led improved findings...

The article provides statistical data on accidents at wind power plants over the past 30 years. necessity of using secondary (emergency) turbine brake systems is substantiated. An overview existing for presented - three main types that have been identified. advantages and disadvantages are considered. authors proposed use an electromechanical system turbines. A mathematical model a 3 kW vertically axial plant this presented. detailed description interrelation models components given....

Recently, renewable energy resources like wind power have been spread rapidly. Nowadays, plays an important role in generating green and cheap electrical power. Scientists improve the strategy to optimize usage of this type by different techniques. A doubly fed induction motor (DFIM) becomes a necessary part turbine generation system due its good efficiency using controlling reactive Due irregular obtainability wind, is intended extract maximum from wind. The purpose paper introduce control...

82 male patients presenting functional azoospermia and klinefelter pattern of testicular biopsy were subjected to genetic, histopathologic, anthropometric clinical studies. With finer methods analysis, heterogeneity, within a disorder previously thought represent one entity is usually revealed. Results the present investigation suggest that sex chromatin counts cannot substitute chromosomal analysis for discover mosaiscism. The study also showed marked phenotypic overlap between X-chromatin...

Abstract The last few years have witnessed researches concerned by vertical axis wind turbine (VAWT) performance considering its advantages compared to the horizontal turbines, as it can be operated in urban areas without producing noise, ease of maintenance and simple construction, addition low cost. More interest is growing developing efficient clusters VAWT order increase power generation at specific sites using multiple turbines. In present work, various configurations Darrieus type...

Data scarcity and speech degradation due to environmental noise are two significant issues in the modelling deployment emotion recognition (SER) systems. Deep learning-based SER systems overfits during because of scarce training samples. Although recent attempts tackle these issues, simultaneously, using data augmentation have yielded promising results, they not robust enough handle real noise. Thus, there is need further improve classification performance deployed This work proposes an...

Abstract VAWT such as the Darrieus turbine, could effectively be used in urban spaces. However, poor self-starting of this type has been considered a major drawback which limits its application. This also hinders turbine’s operation at low wind speeds. While energy research community have lately focusing on augmenting power coefficient machines, enhancement capabilities not attract much attention. In research, some modifications were applied to blades order improve capability. entails...

The wake effect is the biggest challenge when locating downwind turbines in wind farms which imposes large separation distances between turbines. In present work, CFD simulations are presented to study possible configurations of Savonius farm composed by steps, starting from two-turbine configuration, adding one turbine until reaching a cluster closely set ten rotors with an average power coefficient 0.225. This value very close single rotor’s coefficient. density 7.55 W/m2 much higher than...

This article considers the problem of power supply remote consumers, today zones decentralized occupy about 67% territory Russian Federation, basically, these are northern regions country and Far East. One ways to solve this problem, which is widely applied now, use diesel generators, which, course, do irreparable harm environment also not rather reliable for an electric receiver 1st category. more shortcoming that their work completely depends on fuel timely supply. Proceeding from...

The article describes the effect of electromagnetic waves on human body emitted by a cellular phone in context voiced control renewable energy sources plants. simulation propagation from cell located near head has been carried out. model simplified to three elements - plastic casing, metal base antenna and washer. was out EM.CUBE program. As result, it is not recommended perform longtime voice operations for plants using phone.

Even though the International Telecommunication Union-Telecommunication Sector (ITU-T K.21) already imposed on a guideline for over voltages and currents testing methodology customer premises equipment, full adoption of solely this standard may not be sufficient without taking into account surge protection devices (SPD) installation proper earthing system bonding configuration as mentioned in ITU-T K.66. There is high possibility resistive coupling occur to CPE or more specific Digital...

The general effectiveness of fuzzy representation depends heavily on the membership functions. bestfootprint uncertainty for a specific system is highly dependent nature problem that fuzzysystem supposed to solve. As result, proper footprint size selection needed improve fuzzysystem’s efficiency. This research intends investigate impact unique linear parallelogram membershipfunction’s nonlinear modeling and control. proposed type-2 membershipfunction has crisp degree at end points uncertain...

Abstract Strong ocean currents flowing past bluff offshore structures such as semisubmersibles and tension-leg platforms (TLP) can instigate large amplitude vortex-induced motion (VIM). This lead to significant fatigue loads on the mooring system its attachments. Simulating this problem numerically is of particular interest industry in order determine design avoid or suppress vibration structure. But despite being a classical flow problem, it remains major numerical challenge, particularly...

The paper reports about the research of distribution a field speeds air streams along moving rolling train. and size was accomplished with method simulation its movement in by blowing railway train over stream air. To conduct research, we built models full equipment set up environment parameters to obtain plausible results. results reflect numerical modeling data values flow velocities side wall We have estimated utilizing possibility installation wind turbines tracks. With this goal...

Due to the negative environmental situation in many cities around world, people are forced find new ways produce energy that will not have an impact on environment and human health, or this be minimal. The article deals with one of these methods-obtaining using a pressure plate principle electromagnetic induction, which can installed both indoors public places. main condition for effective production-frequent pressing, implies large flow people. provides detailed description such plates,...

In the upcoming years, photovoltaic systems are predicted to be one of main sources electricity, amount installed power has rapidly increased. But using connected grid may have drawback effect on parameters. with more and panel energy its necessary investigate them into systems, because small residential loads at maximum as source utility use a backup interfaced inverter this change characteristics flow shape parameter grid, paper will focus increase reactive problem discuss ability solution...

Abstract This work was conducted with the aim of reducing exhaust gas emissions stationary diesel engines, particularly those used locally by private sector for electric power generation. A specially designed water bath equipped perforated tubes submerged in and supplied circulation to maintain cleanness this purpose. The engine admitted through such that is “cleaned up” thoroughly before being released atmosphere. An experimental on a four-stroke, air-cooled, one-cylinder verify feasibility...