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Wyszukujesz frazę "Horvath, P." wg kryterium: Autor


Tytuł:
Concentration of agricultural and rural development European Union subsidies on regional level in Hungary
Koncentracja subsydiów Unii Europejskiej dla rolnictwa i obszarów wiejskich na poziomie regionalnym na Węgrzech
Autorzy:
Horvath, P.
Peto, K.
Powiązania:
https://bibliotekanauki.pl/articles/863388.pdf
Data publikacji:
2016
Wydawca:
The Polish Association of Agricultural and Agribusiness Economists
Tematy:
subsidy concentration
agricultural development
rural development
European Union
regional level
rural area
agriculture
Hungary
Opis:
The concentration analysis of the agricultural and rural development subsidies in the Southern Great Plain Region were carried out in two periods, in the budget periods of 2004-2006 and 2007-2013, respectively. There is a difference experienced in the concentration between 2004 and 2006; however, the concentration is more balanced with respect to each year. In the regional values the fact may be realized that the share of farmers from the subsidy is balanced. In the period between 2007 and 2013 even the minimal difference in the concentration disappeared relating to the examined years. The value of the concentration index, that is the share of the three performers getting the highest subsidies of the total, proves the run of Lorenz curves, as the indicator has been reflecting an average value around 10% in the region since 2006 in each year. By evaluating the data relating to the subsidies in the Southern Great Plain Region, the fact may be concluded that the concentration became equalized in the examined area.
Celem artykułu jest ocena koncentracji subsydiów Unii Europejskiej dla rolnictwa i obszarów wiejskich na Węgrzech. Badanie przeprowadzono w ujęciu regionalnym w regionie Południowa Wielka Nizina. Wykorzystano dane dla okresów 2004-2006 i 2007-2013. W latach 2004-2006 zaobserwowano różnicę w koncentracji w poszczególnych latach, a w drugim analizowanym okresie koncentracja była bardziej zrównoważona.
Źródło:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2016, 18, 4
1508-3535
2450-7296
Pojawia się w:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Security aspects of process resource planning
Aspekty bezpieczeństwa w zakresie planowania zasobów procesowych
Autorzy:
Michelberger, P.
Horvath, Z.
Powiązania:
https://bibliotekanauki.pl/articles/405765.pdf
Data publikacji:
2017
Wydawca:
Politechnika Częstochowska
Tematy:
MRP II
process management
business continuity
process security
risk
zarządzanie procesami
ciągłość działania
bezpieczeństwo procesu
ryzyko
Opis:
A key contributor to corporate operations security is the availability of resources with provisions for replacement / substitution in an acceptable period of time in the event of shortage. This paper looks into three management approaches. Each has already been put into practice and well-known as well as bearing on business resource planning, which is considered by the author to complement one another and even be ready for combined use. These are the following the Manufacturing Resource Planning (MRP II), the Business Continuity Management (BCM) and the traditional Process Management (process design and control). Highest importance is attached here to security of business processes as well as, or instead of, optimization calculations. The integration and common application of extended MRP II and reinterpreted BCM can provide new opportunities in process management.
Kluczowym czynnikiem przyczyniającym się do bezpieczeństwa operacji korporacyjnych jest dostępność zasobów wraz z procedurami dotyczącymi wymiany / zamiany w dopuszczalnym okresie czasu, w przypadku niedoborów. W artykule rozważa się trzy podejścia do zarządzania. Każde z nich zostało już wdrożone w praktyce i jest dobrze znane, a także ma wpływ na planowanie zasobów biznesowych, które autorzy uważają za wzajemnie uzupełniające się, a nawet możliwe do łącznego wykorzystania. Są nimi: planowanie zasobów wytwórczych (MRP II), zarządzanie ciągłością działania (BCM) i tradycyjne zarządzanie procesami (projektowanie i kontrola procesów). Największe znaczenie przywiązuje się do bezpieczeństwa procesów biznesowych, jak również do obliczeń optymalizacyjnych. Integracja i powszechne zastosowanie rozszerzonego systemu MRP II i ponownie zinterpretowanego zarządzania ciągłością działania, może zapewnić nowe możliwości w zarządzaniu procesami.
Źródło:
Polish Journal of Management Studies; 2017, 16, 1; 142-153
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapid prototyping in medical sciences
Autorzy:
Horvath, A. M.
Ficzere, P.
Powiązania:
https://bibliotekanauki.pl/articles/111937.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
Rapid Prototyping
3D printing methods
3D printed medicines
metody druku 3D
druk leków w 3D
Opis:
Even if it sound a bit incredible rapid prototyping (RPT) as production method has been used for decades in other professions. Nevertheless medical science just started discover the possibilities of this technology and use the offered benefits of 3D printing. In this paper authors have investigated the pharmaceutical usage of rapid prototyping.
Źródło:
Production Engineering Archives; 2015, 8, 3; 28-31
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Defect Sensitivity of Magnetic Dot Arrays Influenced by Thermal Activation and Intradot Anisotropy
Autorzy:
Baláž, P.
Horváth, D.
Gmitra, M.
Powiązania:
https://bibliotekanauki.pl/articles/1813931.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.Az
74.25.Fy
74.72.Bk
02.70.Bf
Opis:
The influence of non-magnetic central node defect on magnetic hysteresis of regular square-shaped segment of magnetic dot array with perpendicular uniaxial anisotropy under the thermal activation was investigated via computer simulations based on stochastic Landau-Lifshitz-Gilbert equation. The aim of this study is to point out the simultaneous effect of anisotropy and thermal activation to the dynamical properties of magnetic dot arrays.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 583-586
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of σ-phase formation on long-term durability of welding joints in SUPER 304H steels
Autorzy:
Horváth, J.
Král, P.
Janovec, J.
Powiązania:
https://bibliotekanauki.pl/articles/1112347.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.70.Jb
68.37.Ma
81.30.Mh
81.20.Vj
62.20.mj
Opis:
Article presents results on the analysis of secondary phases formed in the medium-term static isothermal ageing welding joints of a SUPER 304H (675°C/2×10⁴ h). The investigations of the precipitates were focused on the occurrence of σ-phase because its formation leads to significant deterioration of mechanical properties. The microstructure was investigated on microscopic level by scanning/transmission electron microscopy. The distribution and quantification of brittle σ-phase were studied on macroscopic level by color etching method using light optical microscopy. The effect of microstructural changes (σ-phase formation) on the impact strength of an aged base material was investigated. For comparison impact tests on received state material were also performed. The results showed that long-term ageing led to the significant reduction of impact strength as a result of the formation of the σ-phase. It was found that the σ-phase distribution is influenced by welding process. The influence of brittle σ-phase on long-term durability of the degraded steel regarding its insufficient impact strength has been discussed.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 960-962
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Behavioral Analysis Interview: Clarifying the Practice, Theory and Understanding of its Use and Effectiveness
Autorzy:
Horvath, Frank
Blair, J. P.
Buckley, Joseph P.
Powiązania:
https://bibliotekanauki.pl/articles/523522.pdf
Data publikacji:
2008
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Opis:
The Behavioral Analysis Interview (BAI) is the only questioning method that has been developed specifically to help investigators sort those who are likely to be ‘guilty’ from those who are not. In its typical application the BAI is a pre-interrogation interview that is used to focus interrogational effort; however, it also can be used independently in order to circumscribe investigative efforts in those cases in which there is a fixed and relatively large number of ‘suspects’. In this paper an overview of the BAI process is provided and the findings and limitations of the extant bodies of field and laboratory research on the BAI are discussed. The paper concludes with suggestions to guide future research on the BAI.
Źródło:
European Polygraph; 2008, 2, 2(4); 113-138
1898-5238
2380-0550
Pojawia się w:
European Polygraph
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancement of solar panels power generation by the usage of solar tracking
Wzrost generowanej mocy modułów nadążających za słońcem
Autorzy:
Plesz, B.
Sági, P.
Timár-Horváth, V.
Powiązania:
https://bibliotekanauki.pl/articles/126176.pdf
Data publikacji:
2009
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
solar tracking
two axis tracking
energy enhancement
nadążanie za Słońcem
dwuosiowy system nadążający
przyrost generowanej energii
Opis:
Solar energy will have a continuously rising importance in energy harvesting in the future. Despite all its potential and importance photovoltaic energy still has to be improved in some fields to become competitive with the conventional energy sources of today in large scale applications. One possibility to raise the energy produced by solar modules and panels is solar tracking. Solar tracking allows us to direct solar panels continuously in optimal position to the sun, thus improving the overall efficiency of a photovoltaic system. We calculated the theoretical possible excess energy that can be gained by application of solar tracking. Based on these preliminary calculations we designed and built a complex system using two-axis positioning and electronically realized maximum power point tracking at the same time. Thanks to the built-in radio-wave communication infrastructure it is possible to monitor, control and synchronize different trackers remotely. The extension and scalability of the system enables building solar farms consisting of dozens of individual units.
Energia słoneczna w przyszłości będzie miała coraz większe znaczenie. Przed jej powszechnym wykorzystaniem muszą jednak zostać usunięte pewne bariery, co spowoduje, że będzie ona konkurencyjna w porównaniu z konwencjonalnymi źródłami energii. Jednym ze sposobów zwiększenia sprawności modułów jest ich nadążanie za Słońcem. Sprawia ono, że moduły przez cały dzień pracy pozostają w optymalnym położeniu względem Słońca i generują znacznie więcej energii elektrycznej niż ta zużyta przez system napędowy. W pracy omówiono budowę i działanie elektronicznie sterowanego, dwuosiowego systemu nadążającego. Dzięki komunikacji radiowej jest możliwe monitorowanie, kontrolowanie i zdalna synchronizacja różnych systemów nadążnych. Skalowalność i możliwość rozszerzenia systemu umożliwia jego zastosowania w wielu modułach elektrowni fotowoltaicznej.
Źródło:
Proceedings of ECOpole; 2009, 3, 1; 15-22
1898-617X
2084-4557
Pojawia się w:
Proceedings of ECOpole
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanisms of Plastic Deformation in Ti-Nb-Zr-Ta Based Biomedical Alloys with Fe and Si Content
Autorzy:
Stráský, J.
Harcuba, P.
Horváth, K.
Janeček, M.
Powiązania:
https://bibliotekanauki.pl/articles/1402084.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.40.Cd
81.70.Bt
81.40.Lm
Opis:
Specialized beta titanium alloys containing biocompatible elements (Nb, Zr, Ta) are increasingly considered as a material for orthopaedic implants. In this study, small additions of Fe and Si are used to increase the strength of commercial Ti-35Nb-7Zr-5Ta (TNZT) alloy. Six different advanced alloys with iron content up to 2 wt% and silicon content up to 1 wt% were manufactured by arc melting and hot forging. Flow curves were determined from tensile tests carried out at room temperature. The yield stress is increased from 450 MPa to 700 MPa due to small Fe and Si additions. Fe causes solid solution strengthening exhibited by sharp yield point and significant work hardening. (Ti,Zr)₅Si₃ intermetallic particles further increase the strength via precipitation hardening. An unusual serrated yielding behaviour of benchmark TNZT alloy is caused by twinning as shown by acoustic emission measurement and electron backscattered diffraction analysis.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 574-577
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel rogue optical network unit detection algorithm for gigabit passive optical networks
Autorzy:
Horvath, T.
Munster, P.
Dubravec, L.
Filka, M.
Powiązania:
https://bibliotekanauki.pl/articles/174637.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
gigabit passive optical network
GPON
rogue optical network unit
ONU
data analysis
detection algorithm
Opis:
Passive optical networks are widely used as a promising solution for future access networks. Currently, the bandwidth is still increasing which means the current copper networks are not able to transfer new services such as 4K video, live streaming, etc. In other words, they reached their capacity limit. The passive optical networks rely on point-to-multipoint technology. That means each customer uses a share medium by time slots. Each time slot exactly specifies who and when is able to transfer data. In general, this control mechanism is implemented in the optical network unit by worst transmission convergence layer. On the other hand, there are cases when the optical network unit (it is called rogue optical network unit) does not follow instructions provided by the optical line termination, for example, if an attacker modifies a firmware of the end unit and/or when the control protocol is not loaded properly inside optical network unit. In worst case, the optical network unit transmits data in a continual mode (other optical network units cannot send data). Thestandard defines finding of the rogue optical network unit but it does not specify how the rogue optical network unit should be allocated because the frames of the rogue optical network unit do not contain the proper parameters. We realized a measurement in a real network with the rogue optical network unit and then we analyzed the captured data. A new algorithm for the rogue optical network unit allocation is presented. We do not consider any modification of the transmission convergence layer in gigabit passive optical networks.
Źródło:
Optica Applicata; 2016, 46, 3; 421-433
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Timing measurement and simulation of the activation process in gigabit passive optical networks
Autorzy:
Horvath, T.
Munster, P.
Jurcik, M
Koci, L
Filka, M.
Powiązania:
https://bibliotekanauki.pl/articles/173869.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
gigabit passive optical network (GPON)
GPON transmission convergence (TC) layer measurement
transmission convergence (TC) layer simulation
MATLAB
GPON timing
Opis:
The passive optical networks are widely used nowadays. Service providers have many customers in their distribution networks. The most important thing for communication between the end unit and the control unit is an establishment contact. Design and measurement of the activation process between optical network unit and optical line termination is presented. In general, the service providers have a big split ratio (up to 1:128) due to the connection eminent value of the customers per optical line termination port in chassis. We present the simulation of the connection process for 16, 32, 64, and 128 optical network units and the measurement for single optical network unit (the GPON Xpert is able to read a single connection process). We compare our results in simulation discussion.
Źródło:
Optica Applicata; 2015, 45, 4; 459-471
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distributed Fiber-Optic Sensor for Detection and Localization of Acoustic Vibrations
Autorzy:
Sifta, R.
Munster, P.
Sysel, P.
Horvath, T.
Novotny, V.
Krajsa, O.
Filka, M.
Powiązania:
https://bibliotekanauki.pl/articles/221858.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optical fiber sensor
acoustic vibrations
detection
localization
phi-OTDR
Opis:
A sensing system utilizing a standard optical fiber as a distributed sensor for the detection and localization of mechanical vibrations is presented. Vibrations can be caused by various external factors, like moving people, cars, trains, and other objects producing mechanical vibrations that are sensed by a fiber. In our laboratory we have designed a sensing system based on the Φ-OTDR (phase sensitive Optical Time Domain Reflectometry) using an extremely narrow laser and EDFAs.
Źródło:
Metrology and Measurement Systems; 2015, 22, 1; 111-118
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The alleviation of the adverse effects of salt stress in the tomato plant by salicylic acid shows a time-and organ-specific antioxidant response
Autorzy:
Tari, I.
Csiszar, J.
Horvath, E.
Poor, P.
Takacs, Z.
Szepesi, A.
Powiązania:
https://bibliotekanauki.pl/articles/19644.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
In the last decade contradictory results have been published as to whether exogenous salicylic acid (SA) can increase salt stress tolerance in cultivated plants by inducing an antioxidant response. Salt stress injury in tomato was mitigated only in cases when the plant was hardened with a high concentration of SA (~10-4 M), low concentrations were ineffective. An efficient accumulation of Na+ in older leaves is a well-known response to salt stress in tomato plants (Solanum lycopersicum cv. Rio fuego) but it remains largely unexplored whether young and old leaves or root tissues have a distinct antioxidant status during salt stress after hardening with 10-7 M or 10-4 M SA. The determination of superoxide dismutase (SOD) and catalase (CAT) activity revealed that the SAinduced transient increases in these enzyme activities in young leaf and/or root tissues did not correlate with the salt tolerance of plants. Salt stress resulted in a tenfold increase in ascorbate peroxidase (APX) activities of young leaves and significant increases in APX and glutathione reductase (GR) activities of the roots hardened with 10-4 M SA. Both total ascorbate (AsA) and glutathione pools reached their highest levels in leaves after 10-7 M SA pre-treatment. However, in contrast to the leaves, the total pool of AsA decreased in the roots under salt stress and thus, due to low APX activity, active oxygen species were scavenged by ascorbate non-enzymatically in these tissues. The increased GR activities in the roots after treatment with 10-4 M SA enabled plants to enhance the reduced glutathione (GSH) pool and maintain the redox status of AsA under high salinity, which led to increased salt tolerance.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2015, 57, 1
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-wetting to Wetting Transition Temperatures of Liquid Tin on Surfaces of Different Steel Samples Corresponding to their Spontaneous Deoxidation
Autorzy:
Varanasi, D.
Aldawoudi, K. E
Baumli, P.
Koncz-Horvath, D.
Kaptay, G.
Powiązania:
https://bibliotekanauki.pl/articles/2049712.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wetting transition
deoxidation
contact angles
steels
liquid tin
Opis:
The goal of this paper is to measure the non-wetting to wetting transition temperatures of liquid tin on surfaces of different steel samples in vacuum with residual pressure of 10-8 bar. The experiments were conducted on four steels (C45, S103, CK60 and EN1.4034) of varying compositions using pure tin (99.99%) by the sessile drop method. Non-wetting to wetting transition (contact angle decreasing below 90°) by liquid tin was observed as function of increasing temperature in the range of 820-940 K for low alloyed steels C45, S103 and CK60, while it was considerably higher (around 1130 K) for high chromium EN1.4034 steel. it is concluded that at about the same temperatures, the surfaces of the steel samples are spontaneously deoxidized due to the combined effect of high temperature, low vacuum and C-content of steels. After the oxide layer is removed, the contact angles of liquid tin on steel surfaces were found in the range of 45-80° for low alloyed C45, S103 and CK60 steels and around 20° for high chromium EN1.4034 steel. These relatively high contact angle values compared to other metal/metal couples (such as liquid Cu on steels) are due to the formation of not fully metallic intermetallic compounds (FeSn and FeSn2) at the interface (such do not form in the Cu/Fe system).
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 2; 469-476
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of cardiopulmonary changes during cycle and treadmill tests
Porównanie zmian sercowo-płucnych podczas testów na rowerze i bieżni
Autorzy:
Nagy, D.
Horváth, Z.
Melczer, C.
Derkács, E.
Ács, P.
Oláh, A.
Powiązania:
https://bibliotekanauki.pl/articles/2048470.pdf
Data publikacji:
2020
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
treadmill test
bicycle ergometry test
stress test
athletes
test na bieżni
test ergometru rowerowego
test wysiłkowy
sportowcy
Opis:
Background. Our pilot study aimed to investigate cardiopulmonary differences between vita maxima incremental cycle and treadmill tests among elite youth cyclists. Material and methods. 8 elite youth cyclists (6 male, 2 female; age: 17.125±1.8 years) completed a cycle ergometer test using a road racing bike on a Tacx Smart Flux roller, followed by a vita maxima treadmill test 48 hours later. Aerobic capacity, cardiopulmonary, and metabolic parameters were measured during both tests. Results. Based on the paired sample t-test, and Wilcoxon signed-rank test, the maximal load values (W) on the treadmill were significantly higher (t=3.52; p<0.05) than in the cycle test. Volume of utilized oxygen (VO2; ml/min) and volume of exhaled CO2 (VCO2; ml/min) values (t=4.76 and t=3.45; p<0.05), maximal fat oxidation (Fatmax; g/day) (t=4.34; p<0.05), maximum rate of oxygen consumption (VO2max; ml/kg/min) (t=4.9; p<0.05) and rate of oxygen consumption at lactate threshold (VO2atLT; ml/kg/min) (t=4.04; p<0.05) also showed significantly higher values than in treadmill test. Pearson’s correlation study showed significant correlation between VO2atLT, and most other parameters (VO2, ventilation (VE; BTPS l/min), load at lactate threshold (load at LT), energy expenditure (EE; g/day)). Conclusions. The differences in results may be because of sport-specific adaptation to cycling and the characteristics of running and cycling, such as the different muscle contraction composition (concentric and eccentric) and different metabolic demands. These findings must be taken into account when testing cyclists on a treadmill, and planning their training loads based on these results.
Wprowadzenie. Badanie pilotażowe miało na celu zbadanie sercowo-płucnych różnic przyrostowej vita maxima podczas testów na rowerze i bieżni przeprowadzonych wśród czołowych młodych rowerzystów. Materiał i metody. Ośmioro czołowych młodych rowerzystów (sześciu mężczyzn i dwie kobiety w wieku 17.125±1.8 roku) wykonało najpierw cykl na ergometrze rowerowym z wykorzystaniem roweru wyścigowego Tacx Smart Flux roller, a 48 godzin później test vita maxima na bieżni. Podczas obydwu testów zmierzono wydolność tlenową oraz parametry sercowo-płucne i metaboliczne. Wyniki. Na podstawie badania t par próbek i testu Wilcoxona dla par obserwacji ustalono, że maksymalne wartości obciążenia (W) na bieżni były znacząco wyższe (t=3,52; p<0,05) niż na rowerze. Wartości zużycia tlenu (VO2; ml/min) i wydalonego dwutlenku węgla (VCO2; ml/min) (t=4,76 i t=3,45; p<0,05), maksymalna oksydacja tłuszczu (Fatmax; g/dzień) (t=4,34; p=<0,05), maksymalne zużycie tlenu (VO2max; ml/kg/min) (t=4,9; p<0,05) i zużycie tlenu na progu mleczanowym (VO2atLT; ml/kg/min) (t=4,04; p<0,05) okazały się z kolei istotnie wyższe w teście na bieżni. Badanie korelacji Pearsona wykazało korelację między VO2atLT i większości pozostałych parametrów (VO2, wentylacja (VE; BTPS l/min), obciążenie na progu mleczanowym (load at LT), wydatek energetyczny (EE; g/dzień)). Wnioski. Różnice w uzyskanych wynikach mogły zostać spowodowane predyspozycjami do wykonywania konkretnego sportu, w tym wypadku jazdy na rowerze oraz różnicami między jazdą na rowerze i bieganiem w zakresie struktury kurczliwości (współśrodkowy i niewspółśrodkowy), a także różnymi wymaganiami metabolicznymi. Obserwacje muszą być uwzględnione podczas badania rowerzystów na bieżni i planowania obciążenia ich treningów.
Źródło:
Health Problems of Civilization; 2020, 14, 3; 228-234
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of different soil pH on cadmium uptake by the plants
Autorzy:
Lehoczky, E.
Szabo, L.
Horvath, S.
Albrecht, G.
Marth, P.
Szabados, I.
Powiązania:
https://bibliotekanauki.pl/articles/806287.pdf
Data publikacji:
1998
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
soil pH
cadmium uptake
plant
pot experiment
soil reaction
testing
maize
lettuce
Opis:
Cadmium is one of the toxic heavy metals which, getting in the nutrition chain through the soil-plant system, is capable of causing harm to human health. The objective of the trial was to study the effect of cadmium load in the soil-plant system. In pot experiments carried out under greenhouse conditions, effect of increasing Cd load on different crop plants (lettuce, maize) was studied. Literature data inform on the decisive role of soil reaction in mobility of cadmium in the soil. The answer was looked for the question of the effect of cadmium treatments at uniform rates on Cd uptake by plants on two soils quite different from each other in pH value. It may be concluded that increasing Cd load can result in the decrease of biomass production of maize and lettuce, but significant differences were obtained only on very acid SN soil. The concentration of Cd in plants increased on both soils as a consequence of growing Cd treatment rates. In corresponding treatments the Cd levels in lettuce and maize plants grown on very acid SE soil were several times higher than in case of plants on the KE soil. Obtained results confirm that Cd mobility on acid soil may be much higher what is clearly reflected in cadmium uptake by plants. On acid soils the cadmium uptake by plants is more intensive, therefore this toxic element is more likely to get in the nutrition chain. Considerable differences in Cd uptake can be detected among the plant species. On the same soil at the same rate of cadmium treatment. Cd level in lettuce plants was by several times higher than in maize. The lettuce plants can accumulate cadmium in the leaves at high concentrations without any visible symptoms. In the experiments no toxicity was observed on test plants.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1998, 456
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł

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