Gyula Pinke

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Multivariate analysis of data obtained from 184 cereal and stubble fields in low-input agricultural systems located in western Hungary was undertaken in order to asses environmental factors affecting weed species composition. For each variable, the gross and net effect on weed species composition was calculated. All variables considered in this study had a(More)
GIRK channels are activated by a large number of G protein-coupled receptors and regulate the electrical activity of neurons, cardiac atrial myocytes, and β-pancreatic cells. Abnormalities in GIRK channel function have been implicated in the pathophysiology of neuropathic pain, drug addiction, and cardiac arrhythmias. In the heart, GIRK channels are(More)
The stubble-field weed community, dominated by Stachys annua, was generally distributed in Hungary until the 1950s on mid-heavy and heavy, base-rich soils. Stachys annua is an excellent nectar-producer, and from the nectar collected in its habitats popular stubble-honey was produced. This vegetation type has suffered significant decline, mainly due to the(More)
The weed control of sunflower is a great challenge for farmers throughout the World. In Hungary, one of the greatest concerns is the pernicious weed Ambrosia artemisiifolia, which produces allergenic pollen. The main goal of this study was to identify cultural, weed-management and environmental factors determining weed species composition and the abundance(More)
Weizenstroh wurde auf verschiedenen Labormühlen mit unterschiedlichen Siebeinsätzen zerkleinert. Aus 6 MS-Spangemischen wurden zwei ausgewählt, wovon eines auf einer Schneidmühle, das andere auf einer Hammermühle hergestellt worden war. Aus diesen MS-Spangemischen wurden auf einer Schlagkreuzmühle zwei DS-Materialien gemahlen. Zusätzlich wurden(More)
Common ragweed (Ambrosia artemisiifolia) is an invasive alien species indigenous to North America. Ragweed is a big threat to agriculture and has a serious impact on human health. The most important area with ragweed occurrence within Europe is Pannonian Plain in Central Europe. This research introduces for the first time the unique, direct broad-scale(More)
Phytochemical investigation of the MeOH extract obtained from the aerial parts of the annual weed Euphorbia exigua L. resulted in the isolation of two novel (1, 2) and one known (3) jatrophane diterpenes. Their structures were established by extensive 1D- and 2D-NMR spectroscopy and HR-ESI-MS. The isolated compounds were evaluated for multidrug resistance(More)
The present study aimed at the phytochemical and pharmacological investigation of Sideritis montana L. (Lamiaceae). Two new abietane diterpenes [sideritins A (1) and B (2)] were isolated from the methanol extract of the plant. Six known compounds [pomiferin E (3), 9α,13α-epi-dioxyabiet-8(14)-en-18-ol (4), paulownin (5), 6-methoxysakuranetin (6),(More)
Of the Euphorbia dentata aggregate, both E. dentata and E. davidii have been reported from Europe. A revision of herbarium and published materials, however, indicates that only E. davidii can be confirmed in Europe. Although known in Europe since 1968, most records are from the 1990s. There are 46 known populations scattered throughout the continent, in(More)
The present work is the first phytochemical investigation of Euphorbia davidii Subils. After multistep separation process, three flavonoid glycosides were obtained from the ethyl acetate soluble fraction of the methanol extract of the whole plant. The structures of the isolated compounds were determined as kaempferol 3-O-rhamnoside, myricetin(More)