a Three-layer cross-oriented strand boards, OSB type 3 of 10 mm thick, were industrially manufactured from a mixture of wood species including 50% softwoods, 25% beech, and 25% low hardwoods, using a continuous press line. The effects of line speed and press factor on physical and mechanical properties of OSB/3 (exterior grade) were evaluated, keeping nearly constant the face-core adhesive ratio. The manufactured boards were classified into five groups depending on the pressing parameters. The experimental results showed that all mechanical properties increased, with increasing press factor and decreasing line speed. The ratios of bending strength (MOR) and the modulus of elasticity (MOE) parallel to perpendicular were 1.73 to 1.89 and 2.18 to 2.24, respectively. No significant differences in thickness swell and water absorption were observed. The lowest density was achieved at higher speed, although there was no large variation in densities between groups. Thickness swelling and internal bond after boil test exceeded the EN 300 standard requirements for OSB/3 moisture resistance, excepting a few boards. The results revealed that a correlation between speed and press factor is necessary in order to improve mechanical properties and to keep the physical performance of boards within a limited range of values.
The overall aim of the research was to better understand the influence of raw material characteristics on the quality of decorative veneer, to identify phenotypes of oak and sessile oak valuable for veneer use, and to promote quality in relationship with sustainable development of Romania's forests. This paper describes specific aspects regarding wood defects and quality conditions imposed on raw materials for veneer slicing. The experiments focused on identifying and analyzing defects in oak veneer found in six regions from Romania. Taking into account the dimensional and quality requirements, and obtaining a sufficient quantity of decorative oak veneer, Pareto diagrams corresponding to each region were created. The Pareto analysis allowed for a hierarchy of main defects and also enabled adequate decision-making for improving the quality of the studied products in accordance with specific international standards. Also, by knowing the types of defects, decisions can be made to conserve natural resources and to utilize wood resources by sustainable reuse of waste.
Due to the prolonged use of wind turbines they must be characterized by high reliability. This can be achieved through a rigorous design, appropriate simulation and testing, and proper construction. The reliability prediction and analysis of these systems will lead to identifying the critical components, increasing the operating time, minimizing failure rate, and minimizing maintenance costs. To estimate the produced energy by the wind turbine, an evaluation approach based on the Monte Carlo simulation model is developed which enables us to estimate the probability of minimum and maximum parameters. In our simulation process we used triangular distributions. The analysis of simulation results has been focused on the interpretation of the relative frequency histograms and cumulative distribution curve (ogive diagram), which indicates the probability of obtaining the daily or annual energy output depending on wind speed. The experimental researches consist in estimation of the reliability and unreliability functions and hazard rate of the helical vertical axis wind turbine designed and patented to climatic conditions for Romanian regions. Also, the variation of power produced for different wind speeds, the Weibull distribution of wind probability, and the power generated were determined. The analysis of experimental results indicates that this type of wind turbine is efficient at low wind speed.
In the paper is presented a solution to solve the problem of water supply for an isolated small community where the area posses an outstanding wind potential. It is a place with a few buildings which are located near a river and is needed water for daily requirements. The water must be taken from the river and send it to a tank from where it is sending anytime where is needed. It was taken into consideration two types of wind turbine, one with horizontal axis and other with vertical axis. After studying the advantages of each one it was taken a decision to produce and install a wind turbine with horizontal axis.
We will try to prove in this study that WSEAS does not have any relation with fake and predatory publishers. In this article we use the criteria of Megan O'Donnell in the web site https://instr.iastate.libguides.com/predatory/id for Predatory Publishers, [1] .Mihiretu Kebede, Anna E. Schmaus-Klughammer and Brook Tesfaye Tekle in their recent article [2] examined what the so-called predatory journals are and how they do operate. Kyle Siler in his blog [3] writes the following: “The nature and extent of predatory publishing is highly contested. Whilst debates have often focused defining journals and publishers as either predatory or not predatory. Kyle Siler [3] argues that predatory publishing encompasses a spectrum of activities and that by understanding this ambiguity, we can better understand and make value judgements over where legitimacy lies in scholarly communication”. In this article, we would like to examine if the WSEAS is a Predatory Publisher or not. The answer is that WSEAS does not have any relation with the so-called Predatory Publishers. The WSEAS is not and has never been “Predatory Publisher”.
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