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Wyszukujesz frazę "Nagy, A." wg kryterium: Autor


Tytuł:
The material cycles of biomass and the energy flow in Hungarian agriculture
Materiałowe cykle biomasy i przepływ energii w węgierskim rolnictwie
Material'nye cikly biomassy i protok ehnergii v vengerskom sel'skom khozjajjstwe
Autorzy:
Nagy, A.
Powiązania:
https://bibliotekanauki.pl/articles/799806.pdf
Data publikacji:
1989
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Opis:
Agriculture is essentially an energy conversion process - the conversion of solar energy through photosynthesis to biomass. The problem with solar radiation is that it is diffuse, intermittent and has a low energy flux, so that if we are going to use it, we have to collect this energy, convert to a form convenient for our purposes, and also need to store it - this is what plants solved a long time ago. The primary goal of agriculture is to produce food for humans in the form of a balanced diet. To realize this goal in a modern agriculture with high productivity we use fossil energy subsidy together with a complex mix of science and technology. Fossil energy INPUT in agriculture can be applied directly, as fuels and electricity, and indirectly, as invested energy of fertilizers, pesticides, irrigation, machinery or buildings, all of which depend primarily upon fossil energy. Now, the total fossil energy INPUT, e.g. in maize production per hectare in the growing season averages about 450 1 of oil equivalents. But this represents only 8% of the total solar energy captured by the plant.
Rolnictwo jest istotnie procesem przetwarzania energii - przetwarzaniem energii słonecznej przez fotosyntezę do biomasy. Problem radiacji słonecznej polega na jej rozproszeniu, nieciągłości i małej energii strumienia, a więc jeżeli chcemy ją wykorzystywać, musimy po pierwsze zebrać tę energię, przekształcić na formę nam odpowiadającą i także zarejestrować, a więc to co rośliny rozwiązały wiele lat temu. Pierwszym celem rolnictwa jest produkcja żywności dla ludności w formie wyważonej diety. Do realizacji tego celu we współczesnym rolnictwie o wysokiej produkcyjności wykorzystujemy energię kopalni. Energia kopalni INPUT może być wykorzystana bezpośrednio jako paliwo i elektryczność i pośrednio jako zainwestowana energia w nawozach, pestycydach, nawadnianiu, mechanizacji i budownictwie, we wszystkim co zależy od energii kopalin. Teraz, całkowita energia kopalni INPUT, np. w produkcji kukurydzy na hektar w sezonie wegetacyjnym jest równoważona około 450 1 oleju. Reprezentuje to jednak tylko 8% całkowitej energii słonecznej wychwyconej przez rośliny.
Сельское хозяйство является, действительно, процессом преобразования энергии - преобразованием солнечной энергии путем фотосинтеза в биомассу. Проблема солнечной радиации заключается в ее рассеянии, прерывности и малой энергии потока, значит, если мы хотим ее использовать, мы должны, во-первых, собрать эту энергию, преобразовать в соответствующую для нас форму и также зарегистрировать, значит, то, что растения сами решили много лет тому назад. Первая цель сельского хозяйства - это продукция пищевых продуктов для населения в форме взвешенной диеты. Для реализации этой цели в современном высокопродуктивном сельском хозяйстве используем энергию шахт. Энергия шахт INPUT может быть использована непосредственно как топливо и электричество и посредственно как энергия, ин вестированная в удобрения, пестициды, орошение, механизацию и строительство, во все, что зависит от энергии шахт. Теперь полная энергия шахт INPUT нпр в продукции кукурузы на гектар в вегетационный период уравновешена ок. 450 л масла. Это, однако, представляет лишь 8% полной солнечной энергии, захваченной растениями.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1989, 378
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of tourism in rural areas of Hungary
Rola turystyki na węgierskich terenach wiejskich
Autorzy:
Nagy, A.
Kaposzta, J.
Csonka, T.
Powiązania:
https://bibliotekanauki.pl/articles/867065.pdf
Data publikacji:
2013
Wydawca:
The Polish Association of Agricultural and Agribusiness Economists
Tematy:
tourism
rural area
economy
rural tourism
Hungary
Opis:
Studied by many researchers, tourism has become a major income-generating sector of the economy. Tourism often creates potential and acts as an engine of local economic development for many rural areas however, it is not established in all areas. The utilization of tourism potential in rural areas is sometimes considered to be the “only and last resort” to generating economic growth, even though it is frequently not enough to solve long-lasting and serious problems existing in such areas. Thus, when developing the sector, it is necessary to examine the conditions of a given area. The aim of this study is to discover the touristic possibilities of rural areas and, with the application of certain indicators, quantify and define the long-term potentials of the sector.
Celem badań było przedstawienie możliwości turystycznych terenów wiejskich oraz ocena długofalowego potencjału tego sektora na podstawie wskaźników. Turystyka generuje największe wpływy i w niej dopatruje się dużego potencjału, uważając ją za motor napędowy dla rozwoju lokalnej gospodarki terenów wiejskich. Wykorzystywanie potencjału turystycznego terenów wiejskich postrzega się jako jedyne i ostateczne rozwiązanie, prowadzące do generacji wzrostu ekonomicznego. Nie wystarcza to jednak do rozwiązania długotrwałych i poważnych problemów dotykających te tereny. Dlatego, inwestując i rozwijając ten sektor należy dobrze poznać dany region pod względem jego możliwości turystycznych.
Źródło:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2013, 15, 5
1508-3535
2450-7296
Pojawia się w:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Etiology and pathology of epidemic outbreaks of avian influenza H5N1 infection in Egyptian chicken farms
Autorzy:
Ali, A.
Elmowalid, G.
Abdel-Glili, M.
Sharafeldin, T.
Abdallah, F.
Mansour, F.
Nagy, A.
Ahmed, B.
Abdelmoneim, M.
Powiązania:
https://bibliotekanauki.pl/articles/30849.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Epidemic outbreaks of avian influenza (AI) virus H5N1 have been frequently reported in Egypt during the last nine years. Here we investigate the involvement of AI H5N1 in outbreaks of acute respiratory disease that occurred in several commercial chicken farms in Egypt in 2011, and we describe to the pathology caused by the virus in the course of the outbreak. Twenty-one chicken farms with history of acute respiratory symptoms and high mortalities were screened for AI H5N1. Virus identification was based on hemagglutination inhibition test, and PCR detection and sequencing of the hemagglutinin and neuraminidase genes. Virus distribution was determined by immunohistochemical staining of AI antigens in organs of infected birds. Standard H&E staining was performed for histological examination of affected organs. Eighty-one % of the examined birds, representing 100% of the screened farms, were positive for AI H5N1 virus. Phylogenetic analysis of the hemagglutinin and neuraminidase genes of the isolated virus reveals its affiliation to clade 2.2.1. Viral antigens were localized in the endothelial cells of the heart, liver, lungs and skin, where pathological lesions including congestion, hemorrhages, multifocal inflammation and necrosis were concurrently observed. According to the pattern of the viral antigen and lesion distribution in the visceral organs, we suggest cardiovascular and circulatory failures as the probable cause of death during these outbreaks. In conclusion, the present study further confirms the epidemic status of AI H5N1 virus in Egypt and reveals the highly pathogenic nature of the local isolates.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The model of mineral extraction by the underground leaching method with taking into account non-homogeneity of initial mineral distribution [abstract]
Autorzy:
Tungatarova, M.
Kaltayev, A.
Nagy, S.
Powiązania:
https://bibliotekanauki.pl/articles/300039.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
eksploatacja
mineral extraction
Opis:
The underground leaching method or method of In-Situ Leaching (ISL) is used at the low concentrated mineral deposits exploitation. The underground leaching method is distinguished by high ecological safety and profitability in comparison with the traditional method of production. In-situ leaching is a method for development of ore deposits without lifting the ore to the surface by selective transfer of ions of natural uranium into productive solution in subsurface. This method is performed by drilling of wells through mineral ore bodies, supply of solution into mineral ore bodies, lifting of mineral containing solutions to the surface and extraction of mineral in sorption ion-exchanging units, addition of acid into mother solutions and injection into subsurface. Thus, the method of in-situ leaching, without exaggeration, is the most economical and ecologically safe method of production compared with all other known methods. The problems dealing with the increasing of mineral's excavation rate and the optimal wells locations arise at minerals extraction by ULM. The mineral's excavation rate depends on the types of wells location, the distribution of minerals in layer, the structure of layers and deposit's exploitation conditions. In this work the influence of wells location on mineral's extraction rate is investigated. The study of liquid filtration in layer and dissolution of salt are based on the Darcy's law and one-step chemistry model of dissolution. In addition, the leaching processes in the layer (porous media) is simulated using conservation equations of mass and species. The computer models of mineral extraction by the method of In-Situ Leaching with taking into account of layer's anisotropy and non-homogeneity initial mineral distribution are elaborated in given work.
Źródło:
Wiertnictwo, Nafta, Gaz; 2007, 24, 1; 55-56
1507-0042
Pojawia się w:
Wiertnictwo, Nafta, Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation Of Intermetallic Compounds In Sn-Cu-Ni Lead-Free Solders
Badanie związków międzymetalicznych w bezołowiowych stopach lutowniczych Sn-Cu-Ni
Autorzy:
Nagy, E.
Kristaly, F.
Gyenes, A.
Gacsi, Z.
Powiązania:
https://bibliotekanauki.pl/articles/353266.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
intermetallic
lead-free solder
X-ray diffraction
Opis:
Interfacial intermetallic compounds (IMC) play an important role in Sn-Cu lead-free soldering. The size and morphology of the intermetallic compounds formed between the lead-free solder and the Cu substrate have a significant effect on the mechanical strength of the solder joint. In the soldering process of Sn-Cu alloys, Cu6Sn5 intermetallic compounds are formed. The complex structural behaviour of Cu6Sn5 IMC is temperature- and composition-dependent and it is long since subject to scientific research. The Cu6Sn5 phase basically exists in two crystal structures: hexagonal η-Cu6Sn5 (at temperatures above 186°C) and monoclinic η’-Cu6Sn5 (at lower temperatures). In the presence of Ni in the solder, the η-η’ transformation does not occur, therefore, the η-Cu6Sn5 phase remains stable. In this study the role of Ni in the (Cu,Ni)6Sn5 intermetallic compound in Sn-Cu lead-free solders was examined. Sn-Cu alloys with different Cu content (0.5 to 1 mass%) were modified through Ni addition. The morphology of the intermetallic compounds of the modified Sn-Cu alloys was investigated by optical microscopy (OM) and scanning electron microscopy (SEM), the IMC phases were examined with X-ray diffraction method (XRD).
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2B; 1511-1515
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of indoor radon concentrations between selected Hungarian thermal baths
Autorzy:
Shahrokhi, A.
Nagy, E.
Csordás, A.
Somlai, J.
Kovács, T.
Powiązania:
https://bibliotekanauki.pl/articles/147307.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
AlphaGUARD
CR-39
EU BSS
Hungary
radon
thermal bath
Opis:
Owing to the high potential of radon to increase the risk of lung cancer, health organizations are enforced to update their regulations and recommendations regarding indoor radon levels each year. In this study, the indoor radon concentrations of three randomly selected thermal baths in Hungary using CR-39 and an AlphaGUARD radon monitor were measured with regard to the new updated standards of the European Basic Safety Standard (EU BSS, Council Directive 2013/59/Euratom, 2014). The annual average of indoor radon concentrations in Parad Medical Bath, Igal Health Spa and Eger Turkish Bath were measured as 159 ± 19, 176 ± 27 and 301 ± 30 Bq/m3, respectively. Indoor radon concentration in all measurement locations were determined to be below the reference level, with the exception of the main pool, small pool and sparkling bath areas in the Eger Turkish Bath that were measured as 403 ± 42, 315 ± 32 and 354 ± 36 Bq/m3, respectively. In light of the results, the estimated annual average radon concentration in the thermal baths was below the EU BSS reference level of 300 Bq/m3. Personal dosimetry is required to estimate the annual effective dose from inhaled radon by the workers at the Eger Turkish Bath. This procedure is required in order to justify the application of the mitigation process of decreasing working hours, improving the ventilation rate or increasing the number of classified employees in response to the official radiation surveillance programme.
Źródło:
Nukleonika; 2016, 61, 3; 333-336
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconventional natural gas - USA, the European Union, Poland
Niekonwencjonalny gaz ziemny - Stany Zjednoczone, Unia Europejska, Polska
Autorzy:
Kaliski, M.
Nagy, S.
Siemek, J.
Sikora, A.
Szurlej, A.
Powiązania:
https://bibliotekanauki.pl/articles/172922.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gaz ziemny
gaz łupkowy
wydobycie gazu
rynek gazu
natural gas
shale gas
gas extraction
gas market
Opis:
The global gas market is currently undergoing considerable changes. The most promising places in Europe, as far as the natural gas search and output potential from unconventional resources is concerned, are Austria, Hungary, Poland, Germany and Sweden, among others. Taking into consideration the status of supplies of this type, which is still quite uncertain, and the possibilities of their output in Europe, the European Union (EU), in its prognoses, still does not consider them in the total assessment of demand and supply of natural gas for the FU. The conservatism of Europe is fully justified because practically nobody in Europe possesses "know-how" (lack of equipment or human resources which could be soon referred to defined operations.) What is absolutely necessary is verification of assumptions of the Polish energy policy (PEP2030). The possibility to prepare and, possibly, implement the principles of common energy policy of the EU must be considered.
Światowy rynek gazu przechodzi obecnie istotne zmiany. Najbardziej obiecujące miejsca w Europie, do poszukiwań i wydobycia gazu ziemnego z niekonwencjonalnych zasobów to, między innymi: Austria, Węgry, Polska, Niemcy i Szwecja. Biorąc pod uwagę możliwości ich wydobycia w Europie (choć ciągle jest ona dość niepewna) Unia Europejska (UE), w swoich prognozach, nadal nie uznaje ich w ogólnej ocenie popytu i podaży gazu ziemnego. Konserwatywne podejście w Europie do zasobów gazu z łupków ciągle jest jeszcze w pełni uzasadnione, ponieważ praktycznie nikt w Europie nie posiada 'know-how' (brak jest sprzętu lub zasobów ludzkich, które mogłyby być wkrótce wykorzystane do tych działań). To co jest absolutnie konieczne na obecnym etapie to weryfikacja założeń polityki energetycznej Polski (PEP2030). Możliwość przygotowania i ewentualnie wprowadzenia zasad wspólnej polityki energetycznej Unii Europejskiej, muszą być uwzględnione.
Źródło:
Archiwum Energetyki; 2012, 42, 1; 109-122
0066-684X
Pojawia się w:
Archiwum Energetyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Natural gas in Poland and the European Union
Gaz ziemny w Polsce i Unii Europejskiej
Autorzy:
Kaliski, M.
Nagy, S.
Siemek, J.
Sikora, A.
Szurlej, A.
Powiązania:
https://bibliotekanauki.pl/articles/172924.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wydobycie gazu
Polska
Unia Europejska
gaz ziemny
rynek gazu
natural gas
gas extraction
Polska
European Union
gas market
Opis:
The paper describes the structure of natural gas demand and supply in Poland and the European Union (EU) countries, in recent years, with a particular focus on the extraction of this raw material from domestic reservoirs. The status of diversified natural gas supplies to Poland has been compared to individual EU countries. When analysing the EU supply profile particular attention has been given to a growing share of liquefied natural gas (LNG) imports in recent years. A comparison has been made to show how over the past years the economic crisis has affected this fuel demand in the EU countries.
W artykule przedstawiono strukturę popytu i podaży na gaz ziemny w ostatnich latach w Polsce i krajach UE, ze szczególnym uwzględnieniem wydobycia tego surowca z rodzimych złóż. Porównano stan dywersyfikacji dostaw gazu ziemnego do Polski na tle wybranych Państw UE. Analizując strukturę dostaw do UE zwrócono uwagę na rosnący udział w ostatnich latach importu gazu skroplonego (LNG). W artykule porównano jak w ciągu ostatnich lat kryzys gospodarczy wpłynął na zapotrzebowanie na to paliwo w krajach UE.
Źródło:
Archiwum Energetyki; 2012, 42, 1; 93-107
0066-684X
Pojawia się w:
Archiwum Energetyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hot channel factors evaluation for thermalhydraulic analysis of MTR reactors
Autorzy:
Khalil, M.
Abdelrazek, I.
Nagy, M.
Shokr, A.
Powiązania:
https://bibliotekanauki.pl/articles/147247.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
hot channel factors
MTR
reactor safety
thermalhydraulic analysis
uncertainty
Opis:
This paper addresses the hot channel factors for the thermalhydraulic analysis of Material Testing Reactors (MTR). The criteria for choosing the hot channel factors and their combination methods are presented and discussed. A method for the evaluation of the hot channel factors for the thermalhydraulic analysis is proposed. In the proposed method, the values of the hot channel factor are calculated in terms of their fraction of variation and the degree of dependency of the thermalhydraulic safety parameter of interest on these factors. The equations for the calculation of the thermalhydraulic safety parameters in the hot channel are presented along with discussions. The application of the proposed method has been illustrated by an example.
Źródło:
Nukleonika; 2004, 49, 2; 61-67
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radial Distribution Function Analysis of Carbon Nanotubes
Autorzy:
Szczygielska, A.
Jabłońska, A.
Burian, A.
Dore, J. C.
Honkimaki, V.
Nagy, J. B.
Powiązania:
https://bibliotekanauki.pl/articles/2014446.pdf
Data publikacji:
2000-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.10.-i
81.05.Tp
Opis:
Wide-angle X-ray scattering studies of carbon nanotubes produced by catalytic decomposition of acetylene on a supported Co catalyst are reported. The X-ray intensities were recorded up to maximum scattering vector K$\text{}_{max}$=24Å and then Fourier transformed to real space. Yielding the radial distribution functions of good spatial resolution were analysed by the model based on fitting procedures method. Detailed analysis of the experimental data by a least-squares fitting procedure shows that the local atomic structure exhibits the expected hexagonal network with the nearest-neighbour C-C distance of 1.41Å. Investigation of stacking nature of subsequent layers suggests the structure in which adjacent layers are arranged without spatial correlations with inter-tubule spacing of about 3.4Å.
Źródło:
Acta Physica Polonica A; 2000, 98, 5; 611-617
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of Fusarium ear infection on the maize yield and mycotoxin content (Transylvania-Romania).
Autorzy:
Nagy, E.
Haş, V.
Haş, I.
Suciu, A.
Florian, V.
Powiązania:
https://bibliotekanauki.pl/articles/2199607.pdf
Data publikacji:
2011-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
maize ear rot
Fusarium infection
mycotoxin content
Opis:
Maize is the host for a large number of pathogens, which invade all of its organs from the germination until being harvest, ear and grain infection often persistent even during storage. Diseases, through their symptoms reduce significantly the quantity and the quality of yield, estimated between 7-17% but, in the favorable years for this disease, they can be much greater. Fusarium diseases reduce yield value and quality by massive accumulation of Fusarium mycelium biomass (about 85%) on grain and ears and by mycotoxin contamination such as deoxynivalenol (DON), zearalenone (ZEA) and fumonisins (FUM). In this paper are presented aspects regarding the reaction of some maize hybrids under Fusarium  spp. natural and artificial infections; the effect of Fusarium  ear infection on yield, grain chemical composition, and mycotoxin content; the correlation between ear rot disease degree and yield ability, starch, protein and fat content. ANOVA evidenced the significant influence of experimental factors: infection conditions with Fusarium spp., maize genotypes, and their interaction on expression of the disease degree, yield capacity, protein, starch, fat and DON content. Average yield losses ranged between 7,0-9,3% during the experimental period. The hybrids Turda Star and Turda Favorit were more resistant to Fusarium ear rot, and Turda 165 was the most susceptible one. The artificial infection of ear with Fusarium spp. determined significantly decrease of starch and fat content and increases the protein and DON content for the most part of maize hybrids. Between rot diseased kernels and DON content a positive correlation was determined.
Źródło:
Plant Breeding and Seed Science; 2011, 64; 35-44
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Multicomponent Lead-Free Solders
Autorzy:
Gyenes, A.
Benke, M.
Teglas, N.
Nagy, E.
Gacsi, Z.
Powiązania:
https://bibliotekanauki.pl/articles/354696.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lead-free solder
multi-component
microstructure
X-ray diffraction
mechanical properties
Opis:
According to the directives (RoHS and WEEE) adopted by the European Union, lead has been banned from the manufacturing processes because of its health and environmental hazards. Therefore, the development of lead-free solders is one of the most important research areas of the electronic industry. This paper investigates multicomponent Sn-Ag-Cu based lead-free solders with different compositions. The properties of the six-component Innolot (SAC+BiSbNi) and two low-Ag containing alloys were compared with the widespread used SAC307 solder. Microstructure investigations and X-ray diffraction measurements were performed to analyze and identify the formed phases, furthermore, tensile tests and microhardness measurements were executed to determine the mechanical properties of the examined solders.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1071-1074
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Situation and development possibilities of irrigation in Hungary
Autorzy:
Juhasz, C.
Ratonyi, T.
Harsanyi, E.
Nagy, J.
Szeles, A.
Powiązania:
https://bibliotekanauki.pl/articles/61184.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
situation
development possibility
irrigation
water resource management
water balance
Hungary
Opis:
Irrigation is one of the most important factors of surface water resources management, therefore water saving irrigation farming is desired which could promote better utilisation of the agricultural potential of Hungary. In our article we deal with the situation, problems and development possibilities of water resources management, especially with the development possibilities of irrigation farming.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2013, 1/III
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological characteristic of Hungarian summer truffle (Tuber aestivum Vittad.) producing area
Autorzy:
Gogan, A.C.
Nagy, Z.
Degi, Z.
Bagi, I.
Dimeny, J.
Powiązania:
https://bibliotekanauki.pl/articles/67030.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
Hungary has outstanding environment for natural truffle production in some regions including plain and hilly areas. The most famous of all the natural summer truffle (Tuber aestivum Vittad.) habitats is the commonly called Jászság region. This area is situated in the middle of Hungary, between river Danube and Tisza. The flatland area is basically covered by river alluviums with main soils of chernozems, fluvisols, solonchaks and arenosols. Climate of the region is typically continental: warm and dry summers and cold winters vary. The area is traditionally of agricultural use, although strong afforestation was made in the late 1950’s. The English oak (Quercus robur L.) populations planted at that time gave a basis for current excellent truffle production. Nowadays the region has proved to be the best natural summer truffle (T. aestivum) producing area of Hungary with early season opening (June) and high quality truffles as early as August. In the research the best truffle producing forest blocks were selected for ecological investigation. Results of the detailed site description showed uniform climate characteristics and dominance of English oak (Q. robur) or mixed English oak-Turkey oak (Quercus cerris L.) forests. Soil types revealed differences from earlier findings: dominance of gleysols and water affected chernozems was declared. Soil chemical parameters are in accordance with literature data: pH, organic matter and active carbonate content of the examined soils fall within the range indicated as the requirement of T. aestivum.
Źródło:
Acta Mycologica; 2012, 47, 2
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of the density and cumulative distribution functions of the exponentiated Burr XII distribution
Autorzy:
Hassan, Amal S.
Assar, Salwa M.
Ali, Kareem A.
Nagy, Heba F.
Powiązania:
https://bibliotekanauki.pl/articles/1917020.pdf
Data publikacji:
2021-12-08
Wydawca:
Główny Urząd Statystyczny
Tematy:
exponentiated Burr Type XII model
least squares estimator
maximum likelihood estimator
uniform minimum variance unbiased estimator
weighted least squares estimator
Opis:
The exponentiated Burr Type XII (EBXII) distribution has wide applications in reliability and economic studies. In this article, the estimation of the probability density function and the cumulative distribution function of EBXII distribution is considered. We examine the maximum likelihood estimator, the uniformly minimum variance unbiased estimator, the least squares estimator, the weighted least squares estimator, the maximum product spacing estimator, the Cramér–von-Mises estimator, and the Anderson–Darling estimator. We derive analytical forms for the bias and mean square error. A simulation study is performed to investigate the consistency of the suggested methods of estimation. Data relating to the wind speed and service times of aircraft windshields are used with the studied methods. The simulation studies and real data applications have revealed that the maximum likelihood estimator performs more efficiently than its remaining counterparts.
Źródło:
Statistics in Transition new series; 2021, 22, 4; 171-189
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł

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