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Wyszukujesz frazę "Łuczak, Marcin." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Struktura biologiczna i dynamika drzewostanów uroczyska Paprotnia w Parku Krajobrazowym Wzniesień Łódzkich
    Biological structure and dynamics of the tree-stands in the Paprotnia range in the Wzniesienia Łódzkie Landscape Park
    Autorzy:
    Łuczak, Marcin
    Łuczak, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/944556.pdf
    Data publikacji:
    2000
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    The structure of plant layers as well as diameters of trees in forest communities of the Paprotnia Range are presented in the paper. On the base of these results are characterized: the story of development, the present biological structure, the dynamic tendencies and the prognosis of future development of forest phytocoenoses. Described researches were carried out in the years 1993-1994 and are the continuation of researches on vegetation of the Paprotnia Range (A. Łuczak, M. Łuczak 2000).
    Źródło:
    Acta Universitatis Lodziensis. Folia Botanica; 2000, 14
    0208-6174
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Szata roślinna uroczyska Paprotnia w Parku Krajobrazowym Wzniesień Łódzkich
    Vegetation of the Paprotnia range in the Wzniesienia Łódzkie Landscape Park
    Autorzy:
    Łuczak, Anna
    Łuczak, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/944557.pdf
    Data publikacji:
    2000
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    In the paper there are presented results of researches on flora and plant communities of the Paprotnia Range. These researches were carried out in the years 1993-1994. The following forest communities were distinguished in the range: Circaeo-Alnetum, Luzulo pilosae-Fagetum - the poor variant and variant with Anemone nemorosa, Tilio-Carpinetum typicum, T.-C. stachyetosum, the pine-oak community in the habitat of Luzulo pilosae-Fagetum, the pine community in the habitat of an oak-hornbeam forest. The paper contains also the map of real vegetation of the Range and the list of 265 species of bryophyta and vascular plants.
    Źródło:
    Acta Universitatis Lodziensis. Folia Botanica; 2000, 14
    0208-6174
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geobotaniczno-sozologiczna waloryzacja siedlisk przyrodniczych na wybranych fragmentach Błękitno-Zielonej Sieci
    Geobotanical and sozological valorization of natural habitats in selected areas of the Blue-Green Network
    Autorzy:
    Łuczak, Marcin
    Witosławski, Piotr
    Andrzejewski, Hieronim
    Kiedrzyński, Marcin
    Kurowski, Józef K
    Powiązania:
    https://bibliotekanauki.pl/articles/970743.pdf
    Data publikacji:
    2006
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    geobotanical and sozological valorization
    environment protection
    Blue-Green Network concept
    waloryzacja geobotaniczno-sozologiczna
    ochrona przyrody
    koncepcja Błękitno-Zielonej Sieci
    Opis:
    One of the key components of The Blue-Green Network in Łódź are valuable natural areas like the relicts of the natural wildlife (called “Green Treasures of Łódź”) which parts have been preserved in Łódź in spite of two hundred years, very intense urbanization processes. The result of years of geobotanical research in the city was establishing 23 areas of nature protection and proposing of 12 additional natural areas which need to be protected (8 areas of landscape protection and 4 ecological sites). Existing and proposed areas of nature protection, including river valleys, build the wildlife system of Łódź. Predominantly the important role in this concept play the Łódź’s river valleys with their vegetation potential. The Sokolowka River Valley which is located in the Northern-West part of Łódź was the exemplary research field for geobotanical and sozological valorization of the natural habitat of the Blue-Green Network. Within the Sokolowka valley there are retained fragments of precious nature ecosystems.
    Źródło:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2006, Supplementum; 27-42
    1730-2366
    2083-8484
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Application of Selected Hierarchical Clustering Methods for Classification the Acoustic Emission Signals Generated by Partial Discharges
    Autorzy:
    Borucki, Sebastian
    Łuczak, Jacek
    Lorenc, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2097707.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    acoustic emission method
    acoustic signals
    partial discharges
    power transformer
    clustering method
    Opis:
    The paper presents the results of the application of the hierarchical clustering methods for the classification of the acoustic emission (AE) signals generated by eight basic forms of partial discharges (PD), which can occur in paper-oil insulation of power transformers. Based on the registered AE signals from the particular PD forms, using a frequency descriptor in the form of the power spectral density (PSD) of the signal, their representation in the form of the set of points on plane XY was created. Next, these sets were subjected to analysis using research algorithms consisting of selected clustering methods. Based on the suggested numeric performance indicators, the analysis of the degree of reproduction of the actual distribution of points showing the particular time waveforms of the AE signals from eight adopted PD forms (PD classes) in the obtained clusters was carried out. As a result of the analyses carried out, the clustering algorithms of the highest effectiveness in the identification of all eight PD classes, classified simultaneously, where indicated. Within the research carried out, an attempt to draw general conclusions as to the selection of the most effective hierarchical clustering method studied and the similarity function to be used for classification of the selected basic PD forms.
    Źródło:
    Archives of Acoustics; 2021, 46, 3; 409-417
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of tumour characteristic and treatment modality on the local recurrence and the survival in patients with oral squamous cell carcinoma
    Autorzy:
    Kos, Marcin
    Łuczak, Klaudiusz
    Brusco, Daniel
    Engelke, Werner
    Powiązania:
    https://bibliotekanauki.pl/articles/1398799.pdf
    Data publikacji:
    2008
    Wydawca:
    Index Copernicus International
    Tematy:
    oral cancer
    oral neoplasms
    prognostic factors
    Opis:
    Purpose of the study. To evaluate the impact of tumour location, local and regional advancement, histological differentiation, status of the surgical margins and radiotherapy on the disease-free time and overall survival rates in patients with oral squamous cell carcinoma. Material and methods. A retrospective analysis of 67 patients treated with surgery (61 pts.), radiotherapy (6 pts.) and their combination (28 pts.). Follow time on average 40 months. The probabilities of survival were assessed using the Kaplan-Meier estimates, the differences were calculated with the log-rank test. An analysis of the infl uence of the neck recurrences on the prognosis was additionally performed. Relationship between independent categorical variables as: primary local advancement, location of the tumour, histological grading and lymph node metastases was evaluated with Fisher´s Exact Test. Results. Disease-free time rate amounted to 40,1%. There was no independent prognostic importance of primary location, T-staging and N-staging, histological grading of the tumour or radiation on disease-free time, just opposite to the status of the resection margins. However, the number of neck metastases was directly proportional to the tumour dimension and poor histological differentiation. Overall survival rate amounted to 87,5%. Posterior location in the oral cavity, involvement of cervical lymph nodes, surgical margins with the presence of tumour cells, poor histological differentiation and necessity of irradiation negatively correlated with the survival. Conclusions. A complete resection of the tumour was the most important independent prognostic parameter for the disease-free and overall survivals in oral squamous cell carcinomas in this study. An adjuvant radiation therapy could improve the results of treatment of oral squamous cell carcinoma also in cases were so far considered only for surgical management.
    Źródło:
    Polish Journal of Otolaryngology; 2008, 62, 6; 722-726
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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