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This research paper presents an overview of policies and methods of controlling the emissions caused by motor vehicles and road traffic to reduce local and global pollution. The main premise is the fact that individual mobility and modern freight ...

A solar collector is an apparatus that collects the sunlight energy then alters this energy into a more usable or storable energy form. The absorber surface used in thermal solar collectors requires high absorptance in the solar spectrum and low ...

Recent experimental works demonstrated that the Antropogenic Global Warming (AGW) hypothesis, embodied in a series of Intergovernmental Panel on Climate Change (IPCC) global climate models, is erroneous. These works prove that atmospheric carbon dioxide ...

In this paper we have presented mathematical model based on the diffusion mechanism which enable us to estimate time necessary for the penetration of biostimulator into the plant body. In reality, the biostimulator surface layer must be in the liquid ...

Control of combustion conditions in small-scale biomass boilers for heating purposes is a specific task because it must be carried out without any high additional costs. If a basic control of heating water on a desired value is performed by means of a ...

Portugal has been recognized as a case of world success in terms of renewable energies' development. The transport sector in Portugal accounts for about 42 percent of the country's oil imports, and it is also one of the main responsible for the increase ...

A solid business plan is an important tool for managing any business. It forms up the foundation of the business as well as discusses how important challenges should be solved. Rather often also third parties like financing institutions are interested ...

Fresh horticultural products are highly perishable and need refrigeration for further preservation. Refrigeration needs energy consumption with consequent economical cost and damage for the environment. The objective of the present work was to use ...

In this paper, investigation is carried out for the improvement of power system stability by utilizing auxiliary controls for controlling HVDC power flow. The current controller model and the line dynamics are considered in the stability analysis. ...

Increasing number of wind turbines in thin populated areas produces voltage quality problems such as under-voltages and over voltages. This paper describes a new option for load flow analysis to achieve a better voltage quality and lower grid losses in ...

Increasing awareness of global warming forces policy makers and industries to face two challenges: reducing greenhouse gas emissions and securing stable energy supply against ever-increasing world energy consumption, which is projected to increase by 71%...

One of main research direction on the construction field is the reduction of the energy consumption, which supposes materials, technology and conception of buildings with lower specific energy need on one hand and equipment with high performances on the ...

In this paper, we analyze theoretically the conduction heat transfer that results from an alternating electrical current that flows continuously in an aluminum conductor steel reinforced (ACSR), taking into account that the electrical resistivity is a ...

This paper analyzes the technical parameters of the boiler used for the production of polystyrene. The boiler has previously been built for burning solid fuel, coal, with low heat caloric value (LHV) Hu = 8000kJ/Kg. After the reconstruction, the boiler ...

The purpose of this study was to identify the energy use in Taiwan. Logit regression analyses on a large micro-dataset reveal how energy use characteristics can help explain the energy. Using CR5.0 regression models, this paper explored the factors ...

The purpose of this study was to identify the knowledge for household energy based upon both a technology structure approach knowledge level approach. Energy research could put focus on either of source or consuming. Energy consumer is the one who ...

Soil erosion risk assessment at the watershed of Alqueva is urgently needed to conserve water resources and prevent the accelerated dam siltation. The variation of soil properties is one of the most important reasons for the spatial variability of ...

This work deals with uncertainty in wastewater treatment facilities as a common characteristic capable to contribute to integrating reliability, risk analysis and quality management in combined processes operating in such installations. The Introductory ...

The fundamental role in finding the way out of the economic crisis and in maintaining the dynamics of sustainable economic growth pertains to innovation, as capable of ensuring the renewal of the technical and technological production basis, achieving ...

This paper proposes a simple transmission line model adopted with the partial element equivalent circuit (PEEC) method for lightning surge analysis. The proposed approach is employed for calculating tower surge responses and voltages across insulators ...

This present study reported the effect of 4 organic loading rates (OLR) varied from 25-40 g hexose/L-d on bio-hydrogen production from sweet sorghum syrup by anaerobic mixed cultures in anaerobic sequencing batch reactor. The optimum OLR was found to be ...

In this paper, the authors tried to present a synthesis over the developments carried out across Romania's energy market in the last decade and also to foresee the movements which will take place in the future.

Our study presents the structure of the ...

Xylan was selected as model compound of hemicellulose to investigate its thermal behavior over zeolites by using TG-FTIR. The chemical structure of xylan and characterization of catalysts were first studied. All the three catalysts, HZSM-5, H-β and USY, ...

Energy consumption is increasing all over the world continuously. The policy makers of many countries are reinforcing powerful and effective energy saving policies. Of many policies, it is known that energy efficiency is becoming one of the most ...

Based on the theory of Life-Cycle Energy Analysis, the energy consumption of macro-level buildings in China was analyzed, and the key factors in every Life-Cycle phase were pointed out. With the analysis of building life-cycle energy consumption, carbon ...

This work analyzes the air pollution yearlong hourly mean continuous data from one of the monitoring station located at the top of polyclinic in Al-Jahra city in the State of Kuwait. The measurements cover major pollutants such as carbon monoxide, ...

Although the Law of Diminishing Returns (LDR) has been established in Economics since the era of early economists such as Johann Heinrich von Thünen, Turgot, Thomas Malthus and David Ricardo, its validity in the fields of Engineering (and especially in ...

All GPS Surveying is carried out using differential techniques. That is to say a baseline is measured from a fixed point, (a reference station) to an unknown point (a rover station). The surveyor should choose the appropriate technique for the ...

The paper gives an overview of the global business risks and risks in the mining development in the Kolubara and Kostolac lignite basins in the area of the Danube river in Serbia. An identification of main risks is undertaken by application of a ...

The power consumption for spruce wood processing is of about 70%., as in the case of the other resinous species. The wear of the circular saw blades is one of the factors which influences both the power consumption and the processing quality ...