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    Wyświetlanie 1-6 z 6
    Tytuł:
    Wybrane zagadnienia z teorii przestrzeni Saksa
    Selected problems of the theory of Saks spaces
    Autorzy:
    Jach, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/135874.pdf
    Data publikacji:
    2015
    Wydawca:
    Wyższa Szkoła Techniczno-Ekonomiczna w Szczecinie
    Tematy:
    analiza funkcjonalna
    przestrzenie Saksa
    podstawowe własności
    functional analysis
    Saks spaces
    basic properties
    Opis:
    Wstęp i cele: W pracy opisano wybrane zagadnienia z teorii przestrzeni Saksa. Podano podstawowe definicje i wybrane twierdzenia dotyczące przestrzeni Saksa. Głównym celem pracy jest zapoznanie z tematyką przestrzeni Saksa. Materiał i metody: W pracy wykorzystano podstawy teoretyczne z literatury dotyczącej analizy funkcjonalnej. Zastosowano metodę analityczną. Wyniki: Głównym rezultatem pracy jest podanie definicji i dowodów wybranych własności dotyczących przestrzeni Saksa. Ponadto podano odpowiednie przykłady ilustrujące przestrzeń Saksa. Wniosek: Dysponując podstawowymi wiadomościami o przestrzeniach Saksa, można rozważać nie tylko przestrzenie dualne zbiorów Saksa, lecz również ciągi odwzorowań liniowych w tych przestrzeniach.
    Introduction and aims: This paper describes some aspects of the theory of Saks space. In this study has been shown some basic definitions and selected theorems which refer to Saks spaces. The main aim of this paper is to introduce in the topic of Saks space. Material and methods: In this work the theoretical basis from the functional analysis have been discussed. The method of analysis has been used in the paper. Results: The main result of the study is to provide a definition and some proofs of selected properties concerning of Saks spaces. In addition, have been given some selected examples to illustrate the Saks space. Conclusion: Having basic knowledge about Saks spaces, can be considered further not only dual spaces of Saks sets, but also some sequences of linear projections in Saks spaces.
    Źródło:
    Problemy Nauk Stosowanych; 2015, 3; 127-132
    2300-6110
    Pojawia się w:
    Problemy Nauk Stosowanych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System płuczkowy HDD-14 do wierceń typu HDD z polimerem PT-51
    HDD-14 mud system for HDD drilling with PT-51 polymer
    Autorzy:
    Jach, D.
    Wysocki, S.
    Ropka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/299489.pdf
    Data publikacji:
    2011
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    horyzontalne przewierty sterowane
    płuczki wiertnicze
    horizontal directional drilling
    drilling muds
    Opis:
    W niniejszym artykule przedstawiono wyniki badań nad opracowaniem systemu płuczkowego dowierceń HDD z polimerem PT-51. Przeprowadzone badania uwzględniają odporność na skażenie solami jedno- i dwuwartościowymi oraz smarność płuczki, która jest ważnym parametrem podczas wykonywania poziomych odwiertów. Opracowany system płuczkowy spełnia wymagania stawiane płynom wiertniczym stosowanym do długich przewiertów poziomych.
    The drilling mud are one of the most important elements of HDD technology. The paper presents results of research into drilling mud system for HDD method with the addition of PT-51 addition. It was also tested against mono- and bivalent ions contamination and lubricity. The results show that composed system can be applicable in the industry.
    Źródło:
    Wiertnictwo, Nafta, Gaz; 2011, 28, 1-2; 163-169
    1507-0042
    Pojawia się w:
    Wiertnictwo, Nafta, Gaz
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of Selected Mechanical Properties in Austempered Ductile Iron with Different Wall Thickness by the Decision Support Systems
    Autorzy:
    Jaśkowiec, Krzysztof
    Opaliński, Andrzej
    Kustra, Piotr
    Jach, D.
    Wilk-Kołodziejczyk, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/27314159.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    ADI
    austempered ductile iron
    mechanical properties
    prediction
    decision support systems
    decision tree
    żeliwo sferoidalne
    właściwości mechaniczne
    prognozowanie
    systemy wspomagania decyzji
    Opis:
    The structure of Austempered Ductile Iron (ADI) is depend of many factors at individual stages of casting production. There is a rich literature documenting research on the relationship between heat treatment and the resulting microstructure of cast alloy. A significant amount of research is conducted towards the use of IT tools for indications production parameters for thin-walled castings, allowing for the selection of selected process parameters in order to obtain the expected properties. At the same time, the selection of these parameters should make it possible to obtain as few defects as possible. The input parameters of the solver is chemical composition Determined by the previous system module. Target wall thickness and HB of the product determined by the user. The method used to implement the solver is the method of Particle Swarm Optimization (PSO). The developed IT tool was used to determine the parameters of heat treatment, which will ensure obtaining the expected value for hardness. In the first stage, the ADI cast iron heat treatment parameters proposed by the expert were used, in the next part of the experiment, the settings proposed by the system were used. Used of the proposed IT tool, it was possible to reduce the number of deficiencies by 3%. The use of the solver in the case of castings with a wall thickness of 25 mm and 41 mm allowed to indication of process parameters allowing to obtain minimum mechanical properties in accordance with the PN-EN 1564:2012 standard. The results obtained by the solver for the selected parameters were verified. The indicated parameters were used to conduct experimental research. The tests obtained as a result of the physical experiment are convergent with the data from the solver.
    Źródło:
    Archives of Foundry Engineering; 2023, 23, 2; 137--144
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biostratigraphy and palaeoenvironment of the Kimmeridgian-Lower Tithonian pelagic deposits of the Krížna Nappe, Lejowa Valley, Tatra Mts. (southern Poland)
    Autorzy:
    Jach, R.
    Řeháková, D.
    Uchman, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060506.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    microfacies
    biostratigraphy
    calcareous dinoflagellates
    calpionellids
    Upper Jurassic
    Western Carpathians
    Opis:
    The Upper Jurassic strata of the Krížna Unit in the Tatra Mts. comprises pelagic, fine-grained and well-oxygenated deposits. They are represented by red radiolarites and radiolarian limestones (Czajakowa Radiolarites Formation), red nodular limestones (Czorsztyn Limestones Formation) and wavy, platy or nodular light grey and reddish limestones and marlstones (Jasenina Formation). These deposits are mainly wackestones characterized by a succession of the following microfacies: radiolarian, filament-Saccocoma, Saccocoma and Globochaete–Saccocoma. The section comprises four calcareous dinoflagellate zones, i.e. the Late Kimmeridgian Moluccana Zone, and the Early Tithonian Borzai, Pulla and Malmica zones. In the uppermost part of the studied section, the Early Tithonian Dobeni Subzone of the Chitinoidella Zone has been identified. Using these biostratigraphic data, the sedimentation rate for the Late Kimmeridgian (Borzai Zone) and Early Tithonian (Dobeni Subzone of the Chitinoidella Zone) interval is estimated as 3.7 m/my. This is in accordance with the general trend of increasing sedimentation rate through the Tithonian and Berriasian. The increased supply of clastic material in the Jasenina Formation may have been caused by climate changes and continental weathering. The sedimentation was controlled mainly by eustatic changes and fluctuations in ACD and CCD levels.
    Źródło:
    Geological Quarterly; 2012, 56, 4; 773--788
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integrated stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains
    Autorzy:
    Jach, R.
    Djerić, N.
    Goričan, Š.
    Řeháková, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/191333.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    carbon and oxygen isotopes
    radiolarians
    calcareous dinoflagellates
    radiolarites
    Krizna nappe
    Western Carpathians
    Tethys
    Opis:
    Middle-Upper Jurassic pelagic carbonates and radiolarites were studied in the Krížna Nappe of the Tatra Mountains (Central Western Carpathians, southern Poland and northern Slovakia). A carbon isotope stra- tigraphy of these deposits was combined with biostratigraphy, based on radiolarians, calcareous dinoflagellates and calpionellids. In the High Tatra and Belianske Tatra Mountains, the Bajocian and part of the Bathonian are represented by a thick succession of spotted limestones and grey nodular limestones, while in the Western Tatra Mountains by relatively thin Bositra-crinoidal limestones. These deposits are referable to a deeper basin and a pelagic carbonate platform, respectively. The various carbonate facies are followed by deep-water biosiliceous facies, namely radiolarites and radiolarian-bearing limestones of Late Bathonian-early Late Kimmeridgian age. These facies pass into Upper Kimmeridgian-Lower Tithonian pelagic carbonates with abundant Saccocoma sp. The bulk-carbonate isotope composition of the carbonate-siliceous deposits shows positive and negative S C excursions and shifts in the Early Bajocian, Late Bajocian, Early Bathonian, Late Bathonian, Late Callovian, Middle Oxfordian and Late Kimmeridgian. Additionally, the S13C curves studied show a pronounced increasing trend in the Callovian and a steadily decreasing trend in the Oxfordian-Early Tithonian. These correlate with the trends known from the Tethyan region. The onset of Late Bathonian radiolarite sedimenlalion is marked by a decreasing trend in S13C. Increased S13C values in the Late Callovian, Middle Oxfordian and Late Kimmeridgian (Moluccana Zone) correspond with enhanced radiolarian production. A significant increase in CaCO3 content is recorded just above the Late Callovian S13C excursion, which coincides with a transition from green to variegated radiolarites.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2014, 84, 1; 1-33
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indications for sexology consultation in women after surgical treatment due to breast cancer
    Autorzy:
    Streb, J.
    Jabłonski, M.J.
    Słowik, A.
    Babczyk, D.
    Jach, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2083232.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    mastectomy
    sexual health
    sexual dysfunction
    desire
    orgasm
    Opis:
    Introduction and objectives. Surgical treatment due to brest cancer have an impact on women sexuality. There is a need for research about effective indications for sexology consultation in women after such treatment. The aim of this study is to determine the indications for sexology consultation in women after surgical treatment for breast cancer. Materials and method. We tested 42 women patients diagnosed with breast cancer who had undergone mastectomy 3 months before the study. 3 months after the surgery the women were surveyed using the Polish version of FSFI assessing sexual functioning in women. The result of PL-FSFI were compared with the control group. Results. It was found that the mean score of PL-FSFI in the study group 3 months after the surgery was 13.33 points (score range: 1.2–31.7; median 8.3 points) with a statistically significant difference in terms of areas: desire, arousal, lubrication and orgasm in favour of the control group. The total score of PL-FSFI was significantly lower in women after mastectomy than in women after breast-conserving surgery. It has been shown that sexually active women in whom the surgery concerned the right breast (on the side of the dominant hand) scored lower on the scale “sexual functioning” of QLQ-BR-23 than women with surgery of the left breast, with this difference being statistically significant. There was a statistically significant correlation between the baseline performance status on the Zubrod scale and the scales: desire, lubrication and satisfaction of PL-FSFI. Living in a small town proved to be statistically significant for predicting a lower risk of sexual dysfunction among the surveyed women. Conclusions. The women who underwent surgery due to breast cancer had a higher risk of sexual dysfunction compared to the general population. Higher risk of sexual dysfunction especially concerns women after mastectomy, those who underwent breast surgery on the side of the dominant hand, and those with a worse preoperative overall level of functioning of ≥ 1 point on the Zubrod scale. A lower risk of disorders was observed in women living in smaller towns. The above factors indicate the advisability for sexology consultation in women with breast cancer.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2019, 26, 2; 379-384
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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