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

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Industrial Tests on "Formowax" Pattern Wax Under Investment Foundry Conditions
    Autorzy:
    Kurdziel, P.
    Dydak, A.
    Robak, I.
    Kubosz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/383038.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative materials
    innovative technologies
    investment casting
    pttern waxes
    materiały innowacyjne
    technologie innowacyjne
    inwestycje odlewnicze
    wosk modelowy
    Opis:
    Soft pattern waxes used in investment castings are a mixture of paraffin, stearin and minor amounts of ceresin, polyethylene wax and other natural and synthetic waxes. Nowadays foundries conduct the process of pattern wax formulating on their own. However, instability of the ingredients parameters can have a negative impact on the technological characteristics of the obtained waxes. The paper presents the results of tests on applying a ready-made "FORMOWAX" pattern wax developed by Polwax Sp. z o.o. Application of the reference wax was tested for standard patterns made in Specodlew investment foundry.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2s; 41-44
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photoinduction of seed germination in Arabidopsis thaliana is modulated by phototropis
    Autorzy:
    Jedynak, P.
    Mysliwa-Kurdziel, B.
    Turek, E.
    Malec, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/19691.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Light exposure is an important environmental factor which breaks seed dormancy in many plant species. Phytochromes have been identified as playing a crucial role in perception of the light signal that releases seed germination in Arabidopsis. Phototropins (Phot1, Phot2) are blue/UV-photoreceptors in plants which mediate phototropic responses, chloroplast relocation, hypocotyl growth inhibition and stomata opening. We studied germination under different light conditions in Arabidopsis Phot1-null and Phot2-null mutants and in a double phot1phot2 mutant. Germination of single phot1 and phot2 mutants in darkness was much lower than in wildtype (WT) seeds, whereas double phot1phot2 mutant lacking both functional phototropins germinated at frequency comparable to WT seeds, irrespective of light and temperature conditions. Light treatment of imbibed seeds was essential for effective germination of phot1, irrespective of low-temperature conditioning. In contrast, cold stratification promoted dark germination of phot2 seeds after imbibition in dim light. Low germination frequency of phot1 seeds under low light intensity suggests that the presence of functional Phot1 might be crucial for effective germination at these conditions. The lower germination frequency of phot2 seeds under continuous light suggests that Phot2 might be responsible for stimulating germination of seeds exposed to direct daylight. Thus, the phototropin system may cooperate with phytochromes regulating the germination competence of seeds under different environmental conditions.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2013, 55, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary Study on the Use of Ozonation for the Degradation of Dithiocarbamate Residues in the Fruit Drying Process: Mancozeb Residue in Blackcurrant is the Example Used
    Autorzy:
    Antos, P.
    Kurdziel, A.
    Sadlo, S.
    Balawejder, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/65856.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    In order to reduce the level of dithiocarbamate fungicide mancozeb residues in blackcurrants, two different ozone treatment procedures were evaluated. The first one entailed washing the plant material with an aqueous solution of ozone. This ozone enriched water solution allowed for a 59% reduction of mancozeb residues, compared with the initial concentration. The latter method was based on the utilization of ozone in a gaseous phase combined with a drying process. In that procedure, samples of blackcurrant fruit were exposed to a 19 ppm ozone concentration, and then the blackcurrants were dried. The utilization of ozone in a gaseous phase permitted a 38% reduction of mancozeb residues, in comparison with the initial concentration. As a result of the combination of both processes; ozonation and drying, a 58% reduction of mancozeb residues was achieved.
    Źródło:
    Journal of Plant Protection Research; 2013, 53, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Sparse Initialization in Deep Belief Networks
    Autorzy:
    Grzegorczyk, K.
    Kurdziel, M.
    Wójcik, P. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/305264.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    sparse initialization
    Deep Belief Networks
    Noisy Rectified Linear Units
    Opis:
    Deep neural networks are often trained in two phases: first, hidden layers are pretrained in an unsupervised manner, and then the network is fine-tuned with error backpropagation. Pretraining is often carried out using Deep Belief Networks (DBNs), with initial weights set to small random values. However, recent results established that well-designed initialization schemes, e.g., Sparse Initialization (SI), can greatly improve the performance of networks that do not use pretraining. An interesting question arising from these results is whether such initialization techniques wouldn’t also improve pretrained networks. To shed light on this question, in this work we evaluate SI in DBNs that are used to pretrain discriminative networks. The motivation behind this research is our observation that SI has an impact on the features learned by a DBN during pretraining. Our results demonstrate that this improves network performance: when pretraining starts from sparsely initialized weight matrices, networks achieve lower classification errors after fine-tuning.
    Źródło:
    Computer Science; 2015, 16 (4); 313-327
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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