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1.

001-es BibID:BIBFORM062056
Első szerző:Balla Zoltán (agrármérnök)
Cím:Renewable energy from biomass: a sustainable option? : Hydrogen production from alcohols / Zoltán Balla, Károly Kith, András Tamás, Orsolya Nagy
Dátum:2015
ISSN:1029-7006 1607-7962
Megjegyzések:Sustainable development requires us to find new energy sources instead of fossil fuels. One possibility is thehydrogen fuel cell, which uses significantly more efficient than the current combustion engines. The task of thehydrogen is clean, carbon-free renewable energy sources to choose in the future by growing degree. Hungary canplay a role in the renewable energy sources of biomass as a renewable biomass annually mass of about 350 to 360million tons. The biomass is only a very small proportion of fossil turn carbonaceous materials substitution, whilewe may utilize alternative energy sources as well. To the hydrogen production from biomass, the first step of thechemical transformations of chemical bonds are broken, which is always activation energy investment needs.The methanol and ethanol by fermentation from different agricultural products is relatively easy to produce, sothese can be regarded as renewable energy carriers of. The ethanol can be used directly, and used in several placesin the world are mixed with the petrol additive. This method is the disadvantage that the anhydrous alcohol is to beused in the combustion process in the engine more undesired by-products may be formed, and the fuel efficiencyof the engine is significantly lower than the efficiency of the fuel cells.More useful to produce hydrogen from the alcohol and is used in a fuel cell electric power generation. Particularlyattractive option for the so-called on-board reforming of alcohols, that happens immediately when the vehiclehydrogen production. It does not need a large tank of hydrogen, because the hydrogen produced would be directlyto the fuel cell. The H2 tank limit use of its high cost, the significant loss evaporation, the rare-station network,production capacity and service background and lack of opportunity to refuel problems. These can be overcome, ifthe hydrogen in the vehicle is prepared. As volume even 700 bar only about half the H2 pressure gas can be storedin the case, than the same volume of ethanol-water mixture can be prepared.The renewal of alcohol, the alcohol-water mixture is then passed through the catalytic reformer into a preheater.The exhaust gas contains a relatively large number of carbon monoxide, which would spoil the fuel cell, so thecarbon monoxide concentration to a high and a low temperature water-gas reaction is reduced. This increases thehydrogen production. The last step of the carbon monoxide content to eliminate preferential oxidation. The alcoholreforming catalyst for the precious metals spread most of what arose from high activity and stability. However, theprecious metals are very expensive, so a non-precious metal catalysts is the design and development of objectiveactivity and stability which reaches the precious metal catalysts of.Using the new reaction catalysts opportunities are created, which are smaller than the activation energy than thenon-catalytic process. The basic objective of the technological developments more active at lower temperatures,the selective target product, long-life, low cost design catalysts.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
renewable energy
Megjelenés:Geophysical Research Abstracts 17 (2015), p. [1]. -
További szerzők:Kith Károly (1986-) (környezetkutató, ökológus) Tamás András (1986-) (gazdasági agrármérnök, növénytermesztés és kertészeti tudományok) Nagy Orsolya (1989-) (regionális tudományok)
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2.

001-es BibID:BIBFORM084128
035-os BibID:(cikkazonosító)11783
Első szerző:Bódi Erika (geológus, geográfus)
Cím:Role of different types of solid models in hydrodynamic modeling and their effects on groundwater protection processes / Bódi Erika, Buday Tamás, McIntosh Richard William
Dátum:2013
Tárgyszavak:Természettudományok Földtudományok idézhető absztrakt
folyóiratcikk
Megjelenés:Geophysical Research Abstracts. - 15 (2013), p. 1. -
További szerzők:Buday Tamás (1982-) (geográfus) McIntosh, Richard William (1978-) (geológus)
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3.

001-es BibID:BIBFORM067820
Első szerző:Csatári Nándor (vidékfejlesztési agrármérnök)
Cím:The role of renewable energy on animal farms / Nándor Csatári, András Vántus
Dátum:2015
ISSN:1607-7962
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idézhető absztrakt
Megjelenés:Geophysical Research Abstracts 17 (2015), p. 5163. -
További szerzők:Vántus András (1957-) (agrármérnök, mérnöktanár)
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4.

001-es BibID:BIBFORM078833
Első szerző:Gálya Bernadett (környezetgazdálkodási agrármérnök)
Cím:Spatial segmentation of inland water surface using C-band synthetic aperture radar images on the Great Hungarian Plain / Bernadett Gálya, Lajos Blaskó, Attila Nagy, Csaba Juhász, Péter Riczu, János Tamás
Dátum:2018
Megjegyzések:Extreme water management situations (for instance inland water) are a growing challenge, which are concern in agricultural production not only worldwide but in Europe and in Hungary. Due to the climate change ? which effects are increasing the problems ? are getting ever greater. The spatial and temporal limitation of inland water is a major task of the examinations of these phenomenon. The main objective of my study was to examine the spatial and temporal limitation of inland water and based on these to produce more accurate, more comparable and globally interpreted results. One possible solution could be to monitor the inland water using microwave remote sensing. Thus, the runoff parameters of inland water were evaluated using radar remote sensing technologies in our research. The sample area was the Szolnok-Túr-Plain, which is located in the middle of the Plain Great Hungarian Plain. The inland water patches were isolated using Sentinel 1 satellite images in the sample area. Sentinel 1 data were acquired from the European Space Agency (ESA) website, from 1 January, 2015 to 31 December, 2015. Radar images were processed in the ESA Sentinel Application Platform (SNAP) 2.0 software environment. The detected water surface were correlated with different land cover categories (non-irrigated arable land, grasslands and pastures) based on Corine Land Cover 2012 database. Based on the radar data, the inland water areas were 507.52 hectares in March, 161.23 hectares in April and 105.95 hectares in July in the case of non-irrigated arable lands. For grasslands, the area of inland water were 0.42 hectares in March and 0.43 hectares in April. In the other period, there was no inland water on the sample area. In case of pastures, inland water were occurred in the whole investigation period, among these zones were particularly high at June (337.14 hectares) and at July (1113.67 hectares). Based on the results, the inland water surface can be more clearly defined with spatial segmentation of Sentinel 1 images, and it could help in water management planning.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
folyóiratcikk
Fenntarthatóság vizsgálata a funkcionális agrárökoszisztémákban
Megjelenés:Geophysical Research Abstracts. - 20 (2018), p. 1. -
További szerzők:Blaskó Lajos (1947-) (agrármérnök) Nagy Attila (1982-) (környezetgazdálkodási agrármérnök) Juhász Csaba (1962-) (környezetgazdálkodási agrármérnök) Riczu Péter (1986-) (környezetgazdálkodási agrármérnök) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:EFOP-3.6.2-16-2017-00001
EFOP
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5.

001-es BibID:BIBFORM074391
Első szerző:Hagymássy Zoltán (gépészmérnök)
Cím:Experiences of a grid connected solar array energy production / Hagymássy Zoltán, Vántus András
Dátum:2015
ISSN:1029-7006 1607-7962
Tárgyszavak:Műszaki tudományok Agrárműszaki tudományok idézhető absztrakt
solar array
Megjelenés:Geophysical Research Abstracts. - 17 (2015), p. 1-1. -
További szerzők:Vántus András (1957-) (agrármérnök, mérnöktanár)
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6.

001-es BibID:BIBFORM067592
Első szerző:Kith Károly (környezetkutató, ökológus)
Cím:Biogas - the calculable energy / Károly Kith, Orsolya Nagy, Zoltán Balla, András Tamás
Dátum:2015
ISSN:1607-7962
Megjegyzések:EU actions against climate change are rising energy prices, both have emphasized the use of renewable en- ergy,increase investments and energy efficiency. A number of objectives formulated in the EC decree no. 29/2009 by 2020. This document is based on the share of renewable energies in energy consumption should be increased to 20% (EC, 2009). The EU average is 20% but the share of renewables vary from one member state to another. In Hungary in 2020, 14.65% renewable energy share is planned to be achieved. According to the latest Eurostat data, the share of renewable energy in energy consumption of the EU average was 14.1%, while in Hungary, this share was 9.6% in 2012. (EUROSTAT, 2014). The use of renewable energy plant level is influenced by several factors. The most important of these is the cost savings and efficiency gains. Hungarian investments in renewable energy production usually have high associated costs and the payback period is substantially more than five years, depend- ing on the support rate. For example, the payback period is also influenced by the green electricity generated feed prices, which is one of the lowest in Hungary compared the Member States of the European Union. Consequently, it is important to increase the production of green energy. Nowadays, predictable biogas energy is an outstanding type of decentralized energy production. It follows directly that agricultural by-products can be used to produce energy and they also create jobs by the construction of a biogas plant. It is important to dispose of and destroy hazardous and noxious substances in energy production. It follows from this that the construction of biogas plants have a positive impact, in addition to green energy which is prepared to reduce the load on the environment. The production of biogas and green electricity is one of the most environment friendly forms of energy production. Biogas production also has other important ecological effects, such as the substitution of fertilizers, reducing its use in agriculture, which protects groundwater and surface water conditions and reduces the amount of greenhouse gases in the atmosphere. In the future more emphasis should be given to increase the effectiveness of existing technologies and other types of innovation could be expanded in energy production. It can be concluded that green energy investments can be rewarding if accurate planning is carried out before the investment.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
biogas
green energy
climate
Megjelenés:Geophysical Research Abstracts 17 (2015), p. [1]. -
További szerzők:Nagy Orsolya (1989-) (regionális tudományok) Balla Zoltán (1985-) (agrármérnök) Tamás András (1986-) (gazdasági agrármérnök, növénytermesztés és kertészeti tudományok)
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7.

001-es BibID:BIBFORM084129
Első szerző:McIntosh, Richard William (geológus)
Cím:Tracing tectonics in topography in the Bükk Mountains, NE Hungary / McIntosh Richard William, Bódi Erika, Kozák Miklós, Buday Tamás
Dátum:2013
Tárgyszavak:Természettudományok Földtudományok idézhető absztrakt
folyóiratcikk
Megjelenés:Geophysical Research Abstracts. - 15 (2013), p. 10302. -
További szerzők:Bódi Erika (1989-) (geológus, geográfus) Kozák Miklós (1948-) (geológus) Buday Tamás (1982-) (geográfus)
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8.

001-es BibID:BIBFORM095865
Első szerző:Rátonyi Tamás (agrármérnök)
Cím:Long-term effects of conventional and reduced tillage systems on soil condition and yield of maize / Rátonyi Tamás, Széles Adrienn, Harsányi Endre,
Dátum:2015
ISSN:1029-7006 1607-7962
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
folyóiratcikk
Megjelenés:Geophysical Research Abstracts. - 17 (2015), p. 9141. -
További szerzők:Széles Adrienn (1980-) (okleveles agrármérnök) Harsányi Endre (1976-) (agrármérnök)
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9.

001-es BibID:BIBFORM073527
Első szerző:Riczu Péter (környezetgazdálkodási agrármérnök)
Cím:Spectral-based vegetation mapping on an intensive cherry orchard / Riczu Péter, Csihon Ádám, Nagy Attila, Juhász Csaba, Gálya Bernadett, Tamás János
Dátum:2018
ISSN:1029-7006 1607-7962
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
Megjelenés:EGU General Assembly: Geophysical Research Abstracts. - 20 (2018), p. 20. -
További szerzők:Csihon Ádám (1988-) (kertészmérnök) Nagy Attila (1982-) (környezetgazdálkodási agrármérnök) Juhász Csaba (1962-) (környezetgazdálkodási agrármérnök) Gálya Bernadett (1987-) (környezetgazdálkodási agrármérnök) Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:EFOP-3.6.2-16-2017-00001
EFOP
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10.

001-es BibID:BIBFORM058338
Első szerző:Riczu Péter (környezetgazdálkodási agrármérnök)
Cím:Water content determination of soil surface in an intensive apple orchard / Riczu Péter, Nagy Gábor, Tamás János
Dátum:2015
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
Soil moisture
laser scanning
apple orchard
Megjelenés:EGU General Assembly (2015.04.12-2015.04.17)(Vienna). - Geophysical Research Abstracts. - 17 (2015), p. [1]. -
További szerzők:Nagy Gábor Tamás János (1959-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:TÁMOP - 4.2.4.A/2-11-1-2012-0001
TÁMOP
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11.

001-es BibID:BIBFORM053135
Első szerző:Székely Balázs (geofizikus)
Cím:A concept for extraction of habitat features from laser scanning and hypersprectral imaging for evaluation of Natura 2000 sites - the ChangeHabitats2 project approach / Székely Balázs, Kania Adam, Pfeifer Norbert, Heilmeier Hermann, Tamás János, Szőllősi Nikolett, Mücke Werner
Dátum:2012
ISSN:1029-7006
Megjegyzések:The goal of the ChangeHabitats2 project is the development of cost- and time-ef?cient habitat assessmentstrategies by employing effective ?eld work techniques supported by modern airborne remote sensing methods,i.e. hyperspectral imagery and laser scanning (LiDAR).An essential task of the project is the design of a novel ?eld work technique that on the one hand ful?lls thereporting requirements of the Flora-Fauna-Habitat (FFH-) directive and on the other hand serves as a reference forthe aerial data analysis. Correlations between parameters derived from remotely sensed data and terrestrial ?eldmeasurements shall be exploited in order to create half- or fully-automated methods for the extraction of relevantNatura2000 habitat parameters.As a result of these efforts a comprehensive conceptual model has been developed for extraction and integrationof Natura 2000 relevant geospatial data. This scheme is an attempt to integrate various activities within Change-Habitats2 project de?ning pathways of development, as well as encompassing existing data processing chains,theoretical approaches and ?eld work.The conceptual model includes de?nition of processing levels (similar to those existing in remote sensing),whereas these levels cover the range from the raw data to the extracted habitat feature. For instance, the amount ofdead wood (standing or lying on the surface) is an important evaluation criterion for the habitat. The tree trunkslying on the ground surface typically can be extracted from the LiDAR point cloud, and the amount of woodcan be estimated accordingly. The ?nal result will be considered as a habitat feature derived from laser scanningdata. Furthermore, we are also interested not only in the determination of the speci?c habitat feature, but also inthe detection of its variations (especially in deterioration). In this approach the variation of this important habitatfeature is considered to be a differential habitat feature, that can be immediately used in the evaluation of theNatura 2000 sites.The goal of the project is the identi?cation of many potential habitat features that can be extracted or implied fromremotely sensed data, and the development of processing chains to provide data that can be used in the everyday?eld work of ecological site assessment.
Tárgyszavak:Természettudományok Környezettudományok idézhető absztrakt
remote sensing
monitoring
Natura 2000
Megjelenés:Geophysical Research Abstracts. - 14 : 1 (2012), p. 1-1. -
További szerzők:Kania, Adam (1974-) (program fejlesztő) Pfeifer, Norbert (1971-) (geodéziai mérnök) Heilmeier, Hermann (1954-) (biológus) Tamás János (1959-) (környezetgazdálkodási agrármérnök) Szőllősi Nikolett (1983-) (gazdasági agrármérnök) Mücke, Werner (1977-) (távérzékelési mérnök)
Pályázati támogatás:FP7-PEOPLE-2009-IAPP
Egyéb
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12.

001-es BibID:BIBFORM067595
Első szerző:Tamás András (gazdasági agrármérnök, növénytermesztés és kertészeti tudományok)
Cím:Resource efficiency and its necessity / András Tamás, Orsolya Nagy, Zoltán Balla, Károly Kith
Dátum:2015
Megjegyzések:Renewable energy resources have an important role by improving energy efficiency, thereby contributing to the sustainable and eco-friendly use of local energy resources. The rationalization of energy management and the im- plementation of innovative renewable energy projects can be an excellent tool in terms of both corporate, municipal and household levels to reduce energy costs.The Hungarian Power Companies Ltd. calculates that in Hungary new electricity generating capacity is needed for establishing growth in consumer demand and the replacement of old power plants. On 31th December 2013, there was 9 197 megawatts of installed electrical capacity in the Hungarian electricity system. By 2019, only 70% is expected to be available and by 2030, only 5 100 megawatts of capacity can be calculated. In addition to the replacement needs, the supposed increase in consumer demand also requires the establishment of new capacities (MTI, 2014).In this study, we examined one of Hungary's leading agribusiness companies' technical and other parameters. In the company's head office, hot water is produced by a solar panel. The roof-mounted solar cells heat a 200-liter reservoir of stored water. The daily use of water each day account to between 50 and 200 liters. Waste heat in the cooling system of the company's shop is utilized by using a group-agregator. Cooling is done with significant heat removal. This amount of heat or a portion of it could be recovered. Therefore, a heat exchanger was inserted into the cooling gas cycle which leads to a secondary water cycle with a 300 litre water tank. This solution produces hot water, providing the shop workers' daily hot water needs. Lighting was upgraded by replacing traditional high- performance 250-watt bulbs to 130-watt more energy-efficient light bulbs. The saving achieved is 120 watts per bulb. The energy-saving light bulbs last longer than the mercury-filled bulbs. It is important that the sockets be the same, so they do not have to replace the luminaires. In addition to saving energy it is also important to protect the environment. The mercury-filled bulbs are obsolete pollute the environment after disposal. The other plant head- quarters replaced 60 watts lamps to LED lamps. Also, lighting and the whole network will be replaced. The LED light's energy demand is 23 watts; therefore, barn lighting will result in savings of 2000 watts per hour. It is an important criterion of electricity to burden the electrical network only to the necessary extent. Therefore, services measure both the inductive and capacitive consumption. To avoid extra costs, factor correction capacitors are used. Therefore, reactive energy costs can be avoided.The world's energy resources are finite and it is increasingly more expensive to produce them. Therefore, we must strive to make renewable energy systems involve greater proportion of today's power structure. The company con- tributed to the requirement that the share of renewable energy sources by 2020 should reach 14.65% in Hungary. Green energy investment pays off in a long run for all businesses and it is a necessary economic development.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idézhető absztrakt
green energy
climate
renewable energy
resource
energy save
Megjelenés:Geophysical Research Abstracts 17 : 9096 (2015), p. [1]. -
További szerzők:Nagy Orsolya (1989-) (regionális tudományok) Balla Zoltán (1985-) (agrármérnök) Kith Károly (1986-) (környezetkutató, ökológus)
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