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1

Innovative mathematical methods and new software applications for cost-effective, profitable and environmentally friendly freight transport

100%
Kovacs G.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 4
Due to the optimization and efficiency improvement of freight transportation, fuel consumption and environmental damage are reduced. Furthermore, if companies are more profitable, they can afford to invest in environmentally friendly technologies. Consequently, transportation will become more economic, sustainable and environmentally friendly. Three innovative methods and three new software applications have been developed to provide profitable and sustainable transportation: 1) Structure of key performance indicators and software for continuous evaluation of transport activity. If we can measure the performance, we can improve it in the future. 2) Calculation method and software for precise determination of the total prime cost of a given transportation order. It is significant, because knowing the prime cost, the carrier can calculate the expected profit. Since the transport fee includes the profit, profitable operation can be ensured. 3) Optimization method and software to optimize the fuel cost. At first by determining the optimal, most cost-effective petrol station (depending on the unit fuel price and distance of the potential petrol stations). Then the optimal amount of fuel has to be calculated, i.e. the exact amount needed, plus a safe margin to cover unexpected events. Recently the above-mentioned activities have been unsupported by software, therefore this research is original.
2
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Response of lemon balm (Melissa officinalis L.) accessions to Septoria leaf spot (Septoria melissae Desm.) in Hungary

51%
Kovacs G., Nagy G., Zambori-Nemeth
Journal of Plant Protection Research
|
2020
|
tom 60
|
nr 1
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Susceptibility of lemon balm (Melissa officinalis L.) varieties to Septoria leaf spot (Septoria melissae Desm.) in Hungary

51%
Kovacs G., Zambori-Nemeth E., Nagy G.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
|
tom 18
|
nr 1
Lemon balm (Melissa officinalis L.) is a widely cultivated plant in Europe. Septoria melissae Desm. is the most important pathogen of lemon balm crops, which may cause serious yield loss by the severe leaf fall. As chemical control of the pathogen is restricted, alternative plant protection methods, like the use of tolerant varieties, should be taken under consideration. The goal of our work was to evaluate the susceptibility of three lemon balm varieties to Septoria leaf spot in field. The trials were carried out in 2016 and 2017 in Budapest-Soroksár, Hungary. Dynamics of infection showed characteristic sharp increase from the beginning of August in both years. The lowest infection levels were observed in cultivar ‘Lemona’. The disease incidence in the middle of August was 19% in the first year and 59% in the second year, while these values were over 40% and 70% in the other cultivars ‘Soroksári’ and ‘Quedlinburger Niederliegende’, respectively. The manifestation of symptomps was also significantly lighter on the ‘Lemona’ plants and they had the highest ratio of healthy leaves (81%) compared to the other cultivars. According to the data, weather conditions might modify the range of the differences among the cultivars. It was concluded that appropriate selection of varieties could be an effective and enviromental friendly plant protection method in the practice of lemon balm cultivation.
4

Colchicine, genome-doubling agent for maize microspores

51%
Obert B., Kovacs G., Barnabas B.
Acta Biologica Cracoviensia. Series Botanica. Supplement
|
1999
|
tom 41
|
nr 1
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Nutrient content restructuring and CT-measured density, volume attritions on damaged beans caused by Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae)

39%
Keszthelyi S., Egri H. B., Horvath D., Csoka A., Kovacs G., Donko T.
Journal of Plant Protection Research
|
2018
|
tom 58
|
nr 1
Leguminous plant products have great nutritional and economic importance in the European Union, which is reflected by its protein policy. These harvested yields are risked by stored product pests, such as Acanthoscelides obtectus Say, which can cause up to 50–60% loss in stored bean items. The bean weevil causes both quantitative and qualitative damage to seeds. We aimed to map the qualitative damage of this devastating pest, which deteriorates the nutritional content of bean kernels. Furthermore, our purpose was to determine accurately the decrease in the volume and density alteration in beans caused by this important stored product pest using CT-assisted imaging analysis. Our results showed that the nutritional arrangement in damaged beans was caused by A. obtectus. The measured nutrient content increment in damaged samples can be explained by the presence of extraneous organic material which originates from perished specimens of the bruchin pest. This is a negative phenomenon in bean items used as forage, because of the loss of valuable proteins and rancidity in herbal oils. Weight loss triggered by developing larvae was 49.42% in examined bean items. The use of 3D technologies has greatly improved and facilitated the detailed investigation of injured seeds. The density (75,834 HU; 41.93%) and the volume (296.162 mm3; 26.21%) values measured by CT of the examined samples were significantly decreased. The decreasing of tissue density in damaged beans can be accounted for by the consumption of starch present at a high ratio and that of the dense reserve components in the cotyledons.
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