ASPECTS REGARDING THE ENERGY POTENTIAL OF THE MISCANTHUS PLANT

Greenhouse gases resulting from human activities are the most significant driver of climate change. The use of renewable resources obtained by cultivating energy plants, that have the potential of replacing fossil fuels, is one of the most important approaches to reduce the consequences produced by this global climate change hazard.The paper presents information regarding the energy potential of the Miscanthus plant, that can be explored in three main directions: to produce bioethanol, biogas or solid biomass (chopped, pellets or briquettes), then use thermochemical processes for energy production

MODERN METHODS FOR FOOD PRODUCTS PRESERVATION

Bacteria, molds and yeasts are microorganisms that play an essential role in spoiling food. Food products preservation technologies are intended to reduce the intensity of the activity of pathogenic microorganisms that generate decomposition processes. From the point of view of food technologies, heat treatments (pasteurization, sterilization) are the main way of preserving food. The trend is to minimize or replace heat treatments with nonthermal, non-destructive methods, in order to preserve the freshness, nutritional and bioactive value of the food products. This paper presents the working principles and the effects of various modern methods of preservation, thermal and athermal, on food

ASPECTS REGARDING THE PRESERVATION OF FOOD PRODUCTS USING HIGH VOLTAGE PULSED ELECTRIC FIELD

Food preservation is an important link in ensuring their quality. The ways in which this desideratum is achieved include a wide range of conservation, thermal and athermal techniques. The paper presents aspects regarding the preservation of food products using the high voltage pulsed electric field, as well as the current stage of the realization of technical equipment that uses this technology

CONTRIBUTIONS REGARDING THE INFLUENCE OF THE TEMPERATE-CONTINENTAL CLIMATE ON THE PERFORMANCE OF NEW WHEAT LINES

The genetic diversity of wheat is high and continues to grow, which can contribute to the new challenges imposed by climate change. National Agricultural Research and Development Institute, Fundulea-Romania, using diverse genetic resources and biotechnological methods obtained a series of DH mutant/recombinant lines that can be used in the next years in many cropping zones because as a result of experimentation proved to adapt easily in moderate temperate continental conditions from south Romania. To evaluate the effect of this climate on their agronomic performance, 13 lines and the two forms from which they were extracted, were sowed in ARDS Caracal where average long-term climatic data indicate an increase in temperature with almost 2.500C and also the frequency of periods with drought and high temperatures, as well as extreme weather events. In this context, the new lines represent a superior genetic material that can be made available to farmers and has proven capable of giving high, stable, and quality yields corresponding to market requirements, under the increasingly frequent conditions of some higher temperatures and fluctuations in the pluviometric regime

RESEARCHES REGARDING THE DETERMINATION OF THE NOISE LEVEL PRODUCED BY A CORDLESS MULTIFUNCTIONAL TOOL IN VARIOUS OPERATING CONDITIONS

The acoustic power level is a dimension that must be specified on open-air equipment and its determination depends on several factors: the microphone positioning for determining it (lower or higher distance from the noise source), the shape of the surface measurement and operation of the equipment at different speeds.The paperwork consists in analyzing the results regarding the determination of the acoustic power levels by measuring the acoustic pressure in free field conditions according to SR EN ISO 3744: 2010, under different operating conditions for the tested equipment

CONSIDERATIONS REGARDING THE IMPORTANCE OF THE SORTING OPERATION OF FRUITS AND VEGETABLES

For the normal development of daily activity and maintaining health, the body needs a certain amount of energy and complete nutritional factors (proteins, carbohydrates, lipids, vitamins, minerals, water). They are obtained from food, fruits and vegetables occupying a prominent place as a natural source of carbohydrates, alkalizing mineral salts, vitamins and water. Conditioning involves a set of operations aimed at bringing the products to the characteristics provided by standards, specific to a certain direction of capitalization. This article describes the operations included in the conditioning process, the role and importance of presorting and sorting fruits and vegetables, as well as equipment for these operations

STUDY ON THE CONVERSION OF A CONVENTIONAL TRACTOR INTO AN ELECTRIC TRACTOR

The paper presents the study on how a classic tractor with internal combustion engine can be modified so that it is powered by a battery-powered electric motor. The article presents equipment and components with which a tractor can be modified so that it can run on electricity. In general, an electric tractor consists of the chassis from which the heat engine, electric motor, battery, control and configuration equipment, software used and communication equipment, of the electronic systems on board the tractor are removed

EXPERIMENTAL RESEARCHES REGARDING THE DENSIMETRIC SEPARATOR FOR CLEANING OF THE WHEAT DESTINED TO MILLING

The cleaning of cereal seeds represent an essential operation of the conditioning chain. Taking into account all considerations, the experts׳ attention has been drawn by the study of phenomena which influence upon the impurities separation process, aiming at a maximum reduction impurities. The paper presents the constructive and functional scheme of an densimetric separator driven by means of electrical motovibrators, in view of theirs utilisation with best results for the drive of vibrating sieves. The results of the experimental researches are highlighted, after which the optimal operating parameters were established

RESEARCH ON THE DETERMINATION OF THE NOISE LEVEL PRODUCED BY AN ATOMIZER IN DIFFERENT FUNCTIONING CONDITIONS

Noise is one of the priority issues of environment, especially in crowded urban zones. The user is more and more informed and prefers to choose some reliable products with low noise level. A low level of acoustic pollution leads to the environmental and consumer health protection satisfaction level and thus increases the quality of marketed products. 2000/14/E Directive it requires manufacturers to apply to each equipment introduced on market the guaranteed value of the acoustic power.In this regard, the paper consists both in measuring the acoustic power level of the atomizer at maximum speed and idling. Also, in the paper will be specified choosing the method, number and place of the used microphones, calculating the average of the acustic pressure, functioning conditions, and incertitude measuring