Bungescu Sorin

Plant Protection and Animal Health, Biosystems Engineering, Animal Science

1.88

Publications

  • Source

    Full-text · Dataset · Dec 2015
  • Source
    Popescu C. · Voicea I. · Vlăduţ V. · Cujbescu D. · Bungescu S.
    [Show abstract] [Hide abstract]
    ABSTRACT: Within the paper was performed the study on physico-chemical characterization of lavender water resulting from the process of obtaining the volatile oil of lavender. Distillation used for producing volatile oil of lavender has used the classic process represented by entrainment water vapour method natural vegetal material dry. Water physical-chemical analysis was performed lavender according to the monograph "Lavandulae aetheroleum" European Pharmacopoeia Edition 8.0 has. The results of the study in this waste or byproduct-lavender water are considerable in terms of the content in active principles and therefore possibilities of its use in cosmetics, detergents and perfumes.
    Full-text · Conference Paper · Jun 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The most important component of conservation technological systems, as in the case of conventional ones, is soil tillage – loosening and processing – and the introduction of seed into the soil. Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper are presented conservative tillage technologies use in our country and in the world. 1. INTRODUCTION Soil tillage were an integrated part of agriculture from the beginning and served several important purposes: seedbed preparation, reducing soil compaction to increase aeration and better development of the root system of plants, reducing the weed growth, fertilizer incorporation and amendments, crop residues management [1]. Soil conservation concept covers a range of activities, measures and technologies that contribute to the maintenance of soil fertility without significant decrease in crops or without high costs. This system covers a wide range of agricultural methods aimed at keeping the crop residues on the surface of arable land to reduce erosion. Soil conservation technologies are characterized by the fact that leaves on the soil surface more than 30% of crop residues of the previous crop. During plant development, crop residues protects the soil from sun and wind, reducing water loss by evaporation and increases soil moisture in winter by retaining snow on the ground surface [2]. Soil conservation technologies, which leaves a large amount of crop residues on the soil surface, reduce erosion rate by 95% (no-till) compared with conventional soil tilling systems. Crop residues that are uniformly distributed on the soil surface and in greater quantity on slopes where erosion is greater, by intercepting raindrops, absorb their energy and reduce the detachment of soil particles (the first step in the erosion process), slow water flow on sloping soil surface and reduce soil particles transport (the second step in the erosion process) [3].
    Full-text · Conference Paper · Jun 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The most important component of conservation technological systems, as in the case of conventional ones, is soil tillage – loosening and processing – and the introduction of seed into the soil. Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper are presented conservative tillage technologies use in our country and in the world. 1. INTRODUCTION Soil tillage were an integrated part of agriculture from the beginning and served several important purposes: seedbed preparation, reducing soil compaction to increase aeration and better development of the root system of plants, reducing the weed growth, fertilizer incorporation and amendments, crop residues management [1]. Soil conservation concept covers a range of activities, measures and technologies that contribute to the maintenance of soil fertility without significant decrease in crops or without high costs. This system covers a wide range of agricultural methods aimed at keeping the crop residues on the surface of arable land to reduce erosion. Soil conservation technologies are characterized by the fact that leaves on the soil surface more than 30% of crop residues of the previous crop. During plant development, crop residues protects the soil from sun and wind, reducing water loss by evaporation and increases soil moisture in winter by retaining snow on the ground surface [2]. Soil conservation technologies, which leaves a large amount of crop residues on the soil surface, reduce erosion rate by 95% (no-till) compared with conventional soil tilling systems. Crop residues that are uniformly distributed on the soil surface and in greater quantity on slopes where erosion is greater, by intercepting raindrops, absorb their energy and reduce the detachment of soil particles (the first step in the erosion process), slow water flow on sloping soil surface and reduce soil particles transport (the second step in the erosion process) [3].
    Full-text · Conference Paper · Jun 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper is presented an analysis of the state of research on the implementation in agriculture of conservative tillage technologies and the technical-economic and environmental impacts of applying these conservative technologies. Also, there are presented the most advanced research on optimal construction of equipment for soil processing in conservation system. 1. INTRODUCTION Soil works have been an integral part of agriculture since the beginning and served several important purposes: seedbed preparation, reducing soil compaction to increase aeration and for better development of the root system of plants, reducing the weeding, incorporation of fertilizers and amendments, crop residue management [1]. The agricultural system is a set of sectors, technologies, machinery and technological aggregates, in which the soil is used as the main resource for the production of agricultural crops, orchards, vineyards, vegetables, floriculture and animal husbandry. In Europe, in agriculture, depending on the technologies used, their level of intensification, specialization, the quantity and quality of biomass, the relations with the environment, etc, are practiced various systems of agriculture: conventional, sustainable, ecological (biological, organic), precision, extensive [2]. The conventional agriculture system, product of the over-industrialized society, with strong polluting effects, hardly controllable and unpredictable on the ecological balance, biodiversity and food quality, is the type of powerful but unsustainable farming, found in an alarming stage, due to the exhaustion of fossil fuels and multiple negative effects on society. The beneficial result of industrial agriculture is only the increase of labor productivity and increasing yields, which in the past 4-5 decades have doubled and even tripled in many countries. This is the dominant system of today's agriculture, whose change in the 21st century is imminent [3]. The term "sustainable development" was first used by the Prime Minister of Norway, Gro Harlem Brundtland, in 1987. As chairman of the World Commission on Environment and Development, he presented the report "Our Common Future" in which he defined the sustainable development as "the development that meets the needs of the present without compromising the ability of future generations to meet their own needs". Sustainable development implies ensuring simultaneous progress on three fronts: economic, social, environmental. In the "environment-economic-social" trinomial system, sustainable development emphasizes the interdependence of components and highlights the need for equality and impartiality between people raised to the rank of "universal citizen"[4]. For the term "sustainable agriculture" has not yet been developed a detailed and universally accepted definition, as agricultural practices which subsumes to this concept and aims to provide sustainable development in rural areas vary in space and time, and their effectiveness can be properly assessed, especially retrospectively [5]. Organic farming promotes the systems of sustainable production, diversified and balanced, to prevent the pollution of crops and of the environment [6]. Organic farming
    Full-text · Conference Paper · Jun 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper is presented an analysis of the state of research on the implementation in agriculture of conservative tillage technologies and the technical-economic and environmental impacts of applying these conservative technologies. Also, there are presented the most advanced research on optimal construction of equipment for soil processing in conservation system. 1. INTRODUCTION Soil works have been an integral part of agriculture since the beginning and served several important purposes: seedbed preparation, reducing soil compaction to increase aeration and for better development of the root system of plants, reducing the weeding, incorporation of fertilizers and amendments, crop residue management [1]. The agricultural system is a set of sectors, technologies, machinery and technological aggregates, in which the soil is used as the main resource for the production of agricultural crops, orchards, vineyards, vegetables, floriculture and animal husbandry. In Europe, in agriculture, depending on the technologies used, their level of intensification, specialization, the quantity and quality of biomass, the relations with the environment, etc, are practiced various systems of agriculture: conventional, sustainable, ecological (biological, organic), precision, extensive [2]. The conventional agriculture system, product of the over-industrialized society, with strong polluting effects, hardly controllable and unpredictable on the ecological balance, biodiversity and food quality, is the type of powerful but unsustainable farming, found in an alarming stage, due to the exhaustion of fossil fuels and multiple negative effects on society. The beneficial result of industrial agriculture is only the increase of labor productivity and increasing yields, which in the past 4-5 decades have doubled and even tripled in many countries. This is the dominant system of today's agriculture, whose change in the 21st century is imminent [3]. The term "sustainable development" was first used by the Prime Minister of Norway, Gro Harlem Brundtland, in 1987. As chairman of the World Commission on Environment and Development, he presented the report "Our Common Future" in which he defined the sustainable development as "the development that meets the needs of the present without compromising the ability of future generations to meet their own needs". Sustainable development implies ensuring simultaneous progress on three fronts: economic, social, environmental. In the "environment-economic-social" trinomial system, sustainable development emphasizes the interdependence of components and highlights the need for equality and impartiality between people raised to the rank of "universal citizen"[4]. For the term "sustainable agriculture" has not yet been developed a detailed and universally accepted definition, as agricultural practices which subsumes to this concept and aims to provide sustainable development in rural areas vary in space and time, and their effectiveness can be properly assessed, especially retrospectively [5]. Organic farming promotes the systems of sustainable production, diversified and balanced, to prevent the pollution of crops and of the environment [6]. Organic farming
    Full-text · Conference Paper · Jun 2015
  • S Șt Biriș · V Vlăduț · E Marin · N Ungureanu · S T Bungescu · A Atanasov
    [Show abstract] [Hide abstract]
    ABSTRACT: Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper is presented an analysis of the state of research on the implementation in agriculture of conservative tillage technologies and the technical-economic and environmental impacts of applying these conservative technologies. Also, there are presented the most advanced research on optimal construction of equipment for soil processing in conservation system. 1. INTRODUCTION Soil works have been an integral part of agriculture since the beginning and served several important purposes: seedbed preparation, reducing soil compaction to increase aeration and for better development of the root system of plants, reducing the weeding, incorporation of fertilizers and amendments, crop residue management [1]. The agricultural system is a set of sectors, technologies, machinery and technological aggregates, in which the soil is used as the main resource for the production of agricultural crops, orchards, vineyards, vegetables, floriculture and animal husbandry. In Europe, in agriculture, depending on the technologies used, their level of intensification, specialization, the quantity and quality of biomass, the relations with the environment, etc, are practiced various systems of agriculture: conventional, sustainable, ecological (biological, organic), precision, extensive [2]. The conventional agriculture system, product of the over-industrialized society, with strong polluting effects, hardly controllable and unpredictable on the ecological balance, biodiversity and food quality, is the type of powerful but unsustainable farming, found in an alarming stage, due to the exhaustion of fossil fuels and multiple negative effects on society. The beneficial result of industrial agriculture is only the increase of labor productivity and increasing yields, which in the past 4-5 decades have doubled and even tripled in many countries. This is the dominant system of today's agriculture, whose change in the 21st century is imminent [3]. The term "sustainable development" was first used by the Prime Minister of Norway, Gro Harlem Brundtland, in 1987. As chairman of the World Commission on Environment and Development, he presented the report "Our Common Future" in which he defined the sustainable development as "the development that meets the needs of the present without compromising the ability of future generations to meet their own needs". Sustainable development implies ensuring simultaneous progress on three fronts: economic, social, environmental. In the "environment-economic-social" trinomial system, sustainable development emphasizes the interdependence of components and highlights the need for equality and impartiality between people raised to the rank of "universal citizen"[4]. For the term "sustainable agriculture" has not yet been developed a detailed and universally accepted definition, as agricultural practices which subsumes to this concept and aims to provide sustainable development in rural areas vary in space and time, and their effectiveness can be properly assessed, especially retrospectively [5]. Organic farming promotes the systems of sustainable production, diversified and balanced, to prevent the pollution of crops and of the environment [6]. Organic farming
    No preview · Conference Paper · Jun 2015
  • [Show abstract] [Hide abstract]
    ABSTRACT: Within the spraying process, the compact jet of solution which comes out from a limited space, represented by the nozzle's body or sprayer, is transformed in a jet of droplets, through liquid dispersion in space, under a certain angle, at a speed capable to surpass the liquid's forces of internal cohesion. The spraying angle of the jet is the cone's angle formed between the tangents to the jet's contour, concurrent in the nozzle's orifice. The spraying angle, as also the jet penetration, illustrates the liquid's distribution on the surface to spray. This angle depends in a great measure of the nozzle type and its orifice size. The pressure of the liquid has a significant effect on the size of the spraying angle. Within the paper is presented a mathematic model which characterizes the angle of the nozzle's jet for spraying machines in field crops in function of the working process parameters. This model is then experimentally validated through on stand tests which simulate the real working conditions.
    No preview · Conference Paper · Feb 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Precision for sowing is essential in order to achieve sowing quality works for hoeing plants, ultimately influencing the high productions obtaining. This paper presents a comparative study regarding the sowing accuracy obtained in laboratory conditions on a special stand, using 3 different row units: one individual transmission and two centralized transmissions for the seed distribution devices. The researches were developed for three working speeds, three different plant densities per hectare using corn as seed material.
    Full-text · Conference Paper · Feb 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Seats designed for equipping tractors and other means of transportation are usually tested under simulated testing and accelerated installations in order to determine the protection level which they can provide to those who sit on it for transport on public roads which usually travel with maximum speed (40 or 50 km / h, depending on the tractor). Normally these are not correctly sized after the performed optimization with specific programs, the seatback being too rigid or excessively elastic. The present paper presents a numerical model simulation for testing the resistance of a tractor seat that allows fast and precise of area determination subjected to high voltages, along with performed verification in real conditions by testing resistance under accelerated regime on a specialized stand, in order to determine if this ensures operator’s safety.
    Full-text · Conference Paper · Feb 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Within the spraying process, the compact jet of solution which comes out from a limited space, represented by the nozzle's body or sprayer, is transformed in a jet of droplets, through liquid dispersion in space, under a certain angle, at a speed capable to surpass the liquid's forces of internal cohesion. The spraying angle of the jet is the cone's angle formed between the tangents to the jet's contour, concurrent in the nozzle's orifice. The spraying angle, as also the jet penetration, illustrates the liquid's distribution on the surface to spray. This angle depends in a great measure of the nozzle type and its orifice size. The pressure of the liquid has a significant effect on the size of the spraying angle. Within the paper is presented a mathematic model which characterizes the angle of the nozzle's jet for spraying machines in field crops in function of the working process parameters. This model is then experimentally validated through on stand tests which simulate the real working conditions.
    Full-text · Conference Paper · Feb 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The traction bar as well as other traction devices should be checked in terms of resistance which ensures while driving to the tractor-trailer aggregate. This may be verified by finite element analysis (ANSYS, COSMOS, KATIA, etc.) or by testing under simulated and accelerated special equipment. This paper presents the results obtained by finite element analysis of the traction bar from a 200 HP tractor (after discretization model), determining the requested most powerful items and high-risk areas where fractures can occur, or after stress examination on the testing installation under simulated and accelerated regime to determine if in the following requests appear deformations or ruptures within.
    Full-text · Conference Paper · Feb 2015
  • [Show abstract] [Hide abstract]
    ABSTRACT: Seats designed for equipping tractors and other means of transportation are usually tested under simulated testing and accelerated installations in order to determine the protection level which they can provide to those who sit on it for transport on public roads which usually travel with maximum speed (40 or 50 km / h, depending on the tractor). Normally these are not correctly sized after the performed optimization with specific programs, the seatback being too rigid or excessively elastic. The present paper presents a numerical model simulation for testing the resistance of a tractor seat that allows fast and precise of area determination subjected to high voltages, along with performed verification in real conditions by testing resistance under accelerated regime on a specialized stand, in order to determine if this ensures operator’s safety.
    No preview · Conference Paper · Feb 2015
  • [Show abstract] [Hide abstract]
    ABSTRACT: Precision for sowing is essential in order to achieve sowing quality works for hoeing plants, ultimately influencing the high productions obtaining. This paper presents a comparative study regarding the sowing accuracy obtained in laboratory conditions on a special stand, using 3 different row units: one individual transmission and two centralized transmissions for the seed distribution devices. The researches were developed for three working speeds, three different plant densities per hectare using corn as seed material.
    No preview · Conference Paper · Feb 2015
  • [Show abstract] [Hide abstract]
    ABSTRACT: Romania's strategic objective of EU integration imposes, among others, policies that ensure the implementation of community requirements on the free movement of products, which is based on an open market economy, based on competition and economic and social cohesion. Agricultural productivity (main economic branch through its impact on the society and environment) is influenced by technological level of applied work, sowing work occupying a very important place in these technologies. This paper presents a method for testing the hoeing plants sowing machines with the help of a stand equipped with laser sensors that measure the time interval between the fall of two seeds which it transforms in space and which it compares to the reference area calculated by a specialized software after entering the input data (density, distance between rows, number of holes on the disk, speed).
    No preview · Article · Jan 2014
  • Source
    Valentin Vlăduţ · Sorin-Ştefan Biriş · Sorin Tiberiu Bungescu · Nicolae Herişanu
    [Show abstract] [Hide abstract]
    ABSTRACT: The paper proposes an analysis of vibrations within many Romanian and foreign harvesters provided with tangential threshing unit, analysing the influence which these ones have on the human operator's health. The determination of vibrations has been performed on the basis of accelerations measured at various frequencies, on the three directions: x, y and z (by means of the accelerometers mounted on the main working parts of the harvester), tracing the nomographs representing the limits up to which these frequencies are not dangerous for the operator's health.
    Full-text · Article · Sep 2013 · Applied Mechanics and Materials
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Heavy agricultural vehicles are becoming more prevalent in agricultural exploitations, as they have to carry out works or groups of works with a minimum number of passes on agricultural soil in order to preserve it and to avoid the risk of artificial soil compaction. The link between vehicle and soil is represented by the wheel tire. Proper choice of the tire is extremely important for agricultural vehicles. Various tire manufacturing companies are providing a wide range of tires to the manufacturers of land vehicles. In this paper is presented an analysis of the current trends in tire construction of heavy agricultural vehicles which can be useful for manufacturers and to those who exploit these vehicles for proper choice of these tires.
    Full-text · Conference Paper · Jun 2013
  • I.L. Caba · S. Biriş · K.C. Selvi · S. Bungescu · V. Vlǎduţ · M. Niţu
    [Show abstract] [Hide abstract]
    ABSTRACT: In the process of fibrous forage harvesting, an important requirement is the proper shredding, because it enters directly or indirectly the animal feed composition, whether it is about of fresh fibrous feed with a high degree of moisture or it is about of withered feed, in some cases even dried fodder. It is known that the energetic contribution to achieve of a cut differs within large limits, depending on many factors. For reducing the energy consumption during the shredding of fibrous fodder to minimum possible, we must know the mechanism of cutting process, which also ensures the harvesting equipment reliability.
    No preview · Article · Jan 2013
  • I.L. Caba · S. Bungescu · K.C. Selvi · N. Boja · A. Danciu
    [Show abstract] [Hide abstract]
    ABSTRACT: To achieve high efficiency in exploiting the existing agricultural harvesting machines and gathering fibrous fodder the specialists should be always preoccupied to improve these machines performance. This is possible through careful consideration of each working process, performed by the machine, which at its turn should lead to ideal values. In this paper we have proposed improvements of cutter grinding operation, comprising the self loading trailers.
    No preview · Article · Jan 2013
  • Source
    Matache M. · Voicea I. · Vlădut V. · Pirnă I. · Bungescu S. · Chirilă C.
    [Show abstract] [Hide abstract]
    ABSTRACT: In the article there are presented experimental models of electro-conductivity and productivity agricultural maps obtained on soil type chernozem Cambic, obtained in the the western area of Romania on the experimental plots belonging to USAMVB Timisoara. Monitoring of the two soil characteristics (electro-conductivity and productivity) was made through complex experiments that took place with specific tools and equipment for precision farming concept. Electro-conductivity datas were obtained using a system for determining the soil elctro-conductivity VERIS 3150 MSP, and those of productivity with a monitoring system for grains production type MICRO TRAK mounted on the MDW 527 STS combine with which the experiments were performed. Also we took soil samples in order to realize and a physical and chemical characterization of soil type chernozem Cambic specific to the area analyzed within the article.
    Full-text · Article · Jul 2011

20 Following View all

38 Followers View all