315 research outputs found

    Akademicka Platforma Czasopism jako nowoczesne forum wymiany myśli naukowej

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    In the era of handling media and information channels to the Internet it is natural to desire the editors of scientific journals to take advantage of this road to reach readers. The functioning of the Internet content management systems is an alternative to traditional publishing, providing not only communication but also instant global reach. The purpose of this article is to present the advantages and disadvantages of the use of the Internet platform in the work of the editors of scientific journals using OJS system on the example of Academic Journals Platform UMK apcz.pl. The author applied the method of case studies and in-depth interview with editors of magazines published on apcz.pl.W dobie przenoszenia mediów i kanałów informacyjnych do Internetu naturalną czynnością wydaje się dążenie redakcji czasopism naukowych do skorzystania z tej drogi dotarcia do czytelników. Funkcjonowanie internetowych systemów zarządzania treścią stanowi alternatywę dla wydawnictw tradycyjnych, zapewniając nie tylko błyskawiczny przekaz, ale również globalny zasięg. Celem niniejszego artykułu jest zaprezentowanie zalet i wad stosowania platformy internetowej w pracy redakcji czasopism naukowych używających system OJS na przykładzie Akademickiej Platformy Czasopism apcz.pl. Autor zastosował metodę case study oraz sondaż metodą ankiety internetowej wśród redaktorów czasopism zdeponowanych na apcz.pl

    The impact of business environment institutions on the innovation of Polish small and medium-sized service enterprises

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    This article addresses three fundamental issues. The first issue is Polish small and medium-sized service enterprises, the second - Business Environment Institutions, and the third one - the impact of these institutions on the innovation of the entities in question. The article presents part of the outcome of the research carried out on a group of over two hundred and sixty small and medium-sized service enterprises. The focus of the analysis made was on the intensity of cooperation between these entities and business environment institutions within the area of their innovativeness. The research objective of this article was to assess the impact of business environment institutions on the innovation of Polish small and medium-sized service enterprises. Prior to the commencement of the research we formulated the following research hypothesis - universities are institutions that have the most positive impact on the innovation of micro, small and medium-sized service enterprises. The research questionnaire technique was applied in the survey. The results obtained indicated that the level of cooperation between Polish small and medium-sized enterprises operating in the BEI services sector is very low. This cooperation was found to be usually sporadic or only periodic. Most of the institutions have no influence on the innovativeness of the enterprises surveyed. Only cooperation with entities representing the area of science, research and development transpires to have a significant impact on the level of innovativeness among the respondents

    Involvement of aba in flower induction of Pharbitis nil

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    Flowering of plants is controlled by hormones among which both stimulators and inhibitors are present. The role of abscisic acid (ABA) in flower induction of the short day plant Pharbitis nil was shown in our experiments through exogenous applications and endogenous level determination of the hormone in cotyledons of seedlings grown under special light conditions. The application of ABA to cotyledons or shoot apices during the first half of a 24-h long inductive night inhibits flowering. The same compound applied towards the end of or after a 14-h long subinductive night increases the number of flower buds produced by these plants. Exposing P. nil seedlings at the beginning of a 24-h long inductive night to far red light (FR) decreases the level of endogenous abscisic acid in cotyledons and leads to flower inhibition. However, a pulse of red light (R) reversing the inhibitory effect of far red light on the flowering of P. nil increases the ABA content. The results obtained confirm previous observations that ABA may play a dual and an important role in the regulation of floral bud formation in P. nil. The flowering occurs when the level of endogenous abscisic acid is low at the beginning and is high toward the end of the inductive night

    The Mechanism of Calcium Action on Flower Induction in Pharbitis nil

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    Calcium ions, calcium ionophores A23187 and ionomycin, as well as caffeine, stimulated the flowering of Pharbitis nil when applied just before and 2 h after starting a subinductive, 14-h long dark period. Effectiveness of all the mentioned compounds decreased over successive hours and when used from 6 h after the onset of the dark period they had no effect or inhibited flowering. Intracellular calcium modulators, ryanodine and thapsigargicin, which are active in animal cells had no effect on flowering. These results suggest that an increase in free Ca2 + before and during the first 2 h of the dark period increases the flowering responses, whereas after the 6th hour it decreases it. We postulate that the targets for calcium action are stomata, which are open before the dark period and remain closed during the first 4 - 5 h of the dark period. The significance of stomata in flower induction was confirmed in experiments with abscisic acid (ABA), a plant hormone which regulates stomatal movements. Treating the cotyledons of plants with ABA at the 8th and 10th hour of the dark period, resulted in plants with about 50 % less flower buds than the control, however, this phytohormone had no effect on flowering when used before the subinductive dark period

    EFEKT KRAJU POCHODZENIA JAKO KOD W KOMUNIKACJI REKLAMOWEJ

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    Procesy globalizacyjne w znaczącym stopniu wpływają na ofertę oraz strategie marketingowe przedsiębiorstw. Powstają nowe szanse ale też wyzwania w sferze komunikacji reklamowej, jednym z istotnych uwarunkowań są stereotypy kulturowe. Poszczególne kraje i regiony różnią się od siebie zarówno stylami konsumpcji, jak też podejściem do marketingu i promocji. W działaniach na rynkach zagranicznych coraz większego znaczenia nabiera wizerunek kraju pochodzenia produktów. W artykule autorki analizują znaczenie efektu kraju pochodzenia w komunikacji reklamowej

    Wounding stimulates ALLENE OXIDE SYNTHASE gene and increases the level of jasmonic acid in Ipomoea nil cotyledons

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    Allene oxide synthase (AOS) encodes the first enzyme in the lipoxygenase pathway, which is responsible for jasmonic acid (JA) formation. In this study we report the molecular cloning and characterization of InAOS from Ipomoea nil. The full-length gene is composed of 1662 bp and encodes for 519 amino acids. The predicted InAOS contains PLN02648 motif, which is evolutionarily conserved and characteristic for functional enzymatic proteins. We have shown that wounding led to a strong stimulation of the examined gene activity in cotyledons and an increase in JA level, which suggest that this compound may be a modulator of stress responses in I. nil

    Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

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    Interactions among jasmonates and auxin in the photoperiodic flower induction of a short-day plant Ipomoea nil were examined. Therefore, we measured changes in jasmonic acid (JA) and jasmonic acid methyl ester (JAMe) levels in the cotyledons of I. nil during the inductive night, as well as the effects of indole-3-acetic acid (IAA) on their content. We noticed an interesting result, that IAA applied on the cotyledons of I. nil is an effective stimulator of JAMe production in seedlings cultivated under inductive night conditions. IAA treatment also significantly increased the transcriptional activity of InJMT (JASMONIC ACID CARBOXYL METHYLTRANSFERASE), while did not affect the expression of JA biosynthesis genes (lipoxyganease, allene oxide synthase, 12-oxophytodienoate reductase). These data, as well as the results of our previous research, suggest that exogenous IAA participates in I. nil flower induction process by stimulating InJMT expression and, as a consequence of that, enhancing the level of JAMe, a flowering inhibitor
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