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    Wyświetlanie 1-12 z 12
    Tytuł:
    Autodistributive n-groups
    Autorzy:
    Dudek, W. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/745960.pdf
    Data publikacji:
    1983
    Wydawca:
    Polskie Towarzystwo Matematyczne
    Opis:
    The article contains no abstract
    Źródło:
    Commentationes Mathematicae; 1983, 23, 1
    0373-8299
    Pojawia się w:
    Commentationes Mathematicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fatigue testing devices in a complex load condition
    Autorzy:
    Dudek, A.
    Papacz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/379235.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    research device
    fatigue life
    polymer matrix composite
    complex state of load
    urządzenie badawcze
    trwałość zmęczeniowa
    kompozyt polimerowy
    złożony stan obciążeń
    Opis:
    Purpose: The article presents an overview of fatigue testing devices for polymer composites in a complex load condition. This paper presents physically existing devices and which are in the design phase. Also presented are own concepts of the construction of such devices. The analysis of each device was completed with a description of its advantages and disadvantages. There are various constructor approaches to the problem of fatigue testing. The choice of the device depends on the research program adopted for implementation. Design/methodology/approach: The article presents the comparative analysis of individual devices. The authors presented their own proprietary designs of machines for fatigue tests in a complex load condition. Findings: It was found that the selection of the machine should provide restoration of real working reconstruction of the tested object. Originality/value: Specialist research machines are very expensive. Knowledge about technical solutions and potential capabilities of fatigue testing machines, and about the availability of such devices, allows for the best adjustment of the research program and the optimization of their costs. For designers of new machines, the submitted compendium of solutions may provide inspiration for improvements in the own constructions of subsequent generations of such devices.
    Źródło:
    Archives of Materials Science and Engineering; 2019, 95, 1; 20-30
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Moment and Electronic Structure of Amorphous Alloys of the Type Fe$\text{}_{80-x}$TM$\text{}_{x}$B$\text{}_{20}$
    Autorzy:
    Nowakowska, A.
    Dudek, W.
    Oleniacz, J.
    Zych, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931839.pdf
    Data publikacji:
    1994-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    76.80.+y
    75.50.Bb
    Opis:
    Magnetic properties of amorphous alloys of the type Fe$\text{}_{80-x}$TM$\text{}_{x}$B$\text{}_{20}$ (0 ≤ x ≤ 20 at.%, TM = Ni, Co, Mn, Cr, V, Ti) are presented and analyzed. The basis of our research work was the Mössbauer measurements, magnetic saturation measurements, derivative thermo-magnetogravimetry and differential thermal analysis measurements. The magnetic moments are discussed in terms of Friedel's virtual-bound-state model for light TM impurities in strong ferromagnets. Some conclusions about the electronic structure are presented.
    Źródło:
    Acta Physica Polonica A; 1994, 86, 6; 1027-1036
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Immunohistochemical characterization of neurons in the vestibular ganglion (Scarpa’s ganglion) of the pig
    Autorzy:
    Dudek, A.
    Sienkiewicz, W.
    Kaleczyc, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/31779.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    immunohistochemistry
    neuron
    vestibular ganglion
    pig
    Scarpa’s ganglion zob.vestibular ganglion
    nerve fibre
    Opis:
    The study was carried out on three 4-month old female pigs. All the animals were deeply anesthetized and transcardially perfused with 4% buffered paraformaldehyde (pH 7.4). Vestibular ganglia (VG) were collected and processed for double-labelling immunofluorescence method. The preparations were examined under the Zeiss LSM 710 confocal microscope equipped with adequate filter blocks. Neurons forming VG were round or oval in shape with a round nucleus in the center. The majority of them (58%) were medium (M) (31-50 μm in diameter) while 28 % and 14% were small (S) (up to 30 μm in diameter) or large (L) (above 50 μm in diameter) in size, respectively. Double-labeling immunofluorescence revealed that VG neurons stained for CGRP (approx. 81%; among them 70.5%, 26.2% and 3.3% were M, S and L in size, respectively), VACHT (57%; 63% M, 24% S, 13% L), Met-Enk (25%; 60% M, 12% S, 28% L), VIP (20%; 88% M, 6% S, L), NPY (15%; 67% M, 20% S, 13% L), GAL (15%; 74% M, 21% S, 5% L), SP (12%; 69% M, 25% S, 6% L) and NOS-positive (12%; 50% S, 50% M). The most abundant populations of intraganglionic nerve fibers were those which stained for CGRP or Met-Enk, whereas only single SP- or NOS-positive nerve terminals were observed.
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Immunohistochemical characterization of the jugular (superior vagal) ganglion in the pig
    Autorzy:
    Sienkiewicz, W.
    Dudek, A.
    Zacharko-Siembida, A.
    Marszalek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/31280.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The study was carried out on three 4-month old female pigs. All the animals were deeply anesthetized and transcardially perfused with 4% buffered paraformaldehyde (pH 7.4). Left and right superior vagal ganglia (SVG) were collected and processed for immunofluorescence labeling method. The preparations were examined under a Zeiss LSM 710 confocal microscope equipped with adequate filter block. Neurons forming SVG were round or oval in shape with a round nucleus in the center. The majority of them (52%) were medium (M) (31-50 μm in diameter) while 7% and 41% were small (S) (up to 30μm in diameter) or large (L) (above 50 μm in diameter) in size, respectively. Double-labeling immunofluorescence revealed that SVG neurons stained for CGRP (approx. 57%; among them 37%, 9% and 54% were M, S and L in size, respectively), SP (14.5%; 72.4% M, 3.4% S, 24.2% L), VACHT (26%; 63% M, 24% S and 13% L ), GAL (14%; 57% M, 29% S, 14% L), NPY (12%; 53% M, 12% S, 35% L), Met-Enk (5%; 40% M, 6% S and 54% L), PACAP (15%; 52% M, 24% S and 24% L),VIP (6.3%; 67% M, 8% S and 25% L), and NOS-positive (6%; 31% M and 69% L). The most abundant populations of intraganglionic nerve fibers were those which stained for CGRP or GAL, whereas only single SP-, PACAP- or Met-ENK-positive nerve terminals were observed.
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 20, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Caudal mesenteric ganglion in the sheep-macroanatomical and immunohistochemical study
    Autorzy:
    Sienkiewicz, W.
    Chroszcz, A.
    Dudek, A.
    Janeczek, M.
    Kaleczyc, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/31932.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The caudal mesenteric ganglion (CaMG) is a prevetrebral ganglion which provides innervation to a number of organs in the abdominal and pelvic cavity. The morphology of CaMG and the chemical coding of neurones in this ganglion have been described in humans and many animal species, but data on this topic in the sheep are entirely lacking. This prompted us to undertake a study to determine the localization and morphology of sheep CaMG as well as immunohistochemical properties of its neurons. The study was carried out on 8 adult sheep, weighing from 40 to 60 kg each. The sheep were deeply anaesthetised and transcardially perfused with 4% paraformaldehyde. CaMG-s were exposed and their location was determined. Macroanatomical observations have revealed that the ovine CaMG is located at the level of last two lumbar (L5 or L6) and the first sacral (S1) vertebrae. The ganglion represents an unpaired structure composed of several, sequentially arranged aggregates of neurons. Immunohistochemical investigations revealed that nearly all (99.5%) the neurons were DßH-IR and were richly supplied by VACHT-IR nerve terminals forming „basket-like" structures around the perikarya. VACHT-IR neurones were not determined. Many neurons (55%) contained immunoreactivity to NPY, some of them (10%) stained for Met-ENK and solitary nerve cells were GAL-positive. CGRP-IR nerve fibres were numerous and a large number of them simultaneously expressed immunoreactivity to SP. Single, weakly stained neurones were SP-IR and only very few nerve cells weakly stained for VIP.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Immunohistochemical properties of motoneurons supplying the trapezius muscle in the rat
    Autorzy:
    Dudek, A.
    Sienkiewicz, W.
    Marczak, M.
    Kaleczyc, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/30477.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    immunohistochemical property
    motoneuron
    trapezius muscle
    rat
    tracing
    immunohistochemistry
    Opis:
    Combined retrograde tracing (using fluorescent tracer Fast blue) and double-labelling immunofluorescence were used to study the distribution and immunohistochemical characteristics of neurons projecting to the trapezius muscle in mature male rats (n=9). As revealed by retrograde tracing, Fast blue-positive (FB+) neurons were located within the ambiguous nucleus and accessory nucleus of the grey matter of the spinal cord. Immunohistochemistry revealed that nearly all the neurons were cholinergic in nature [choline acetyltransferase (ChAT)-positive]. Retrogradely labelled neurons displayed also immunoreactivities to calcitonin gene-related peptide (CGRP; approximately 60% of FB+ neurons), nitric oxide synthase (NOS; 50%), substance P (SP; 35%), Leu5-Enkephalin (LEnk; 10%) and vasoactive intestinal polypeptide (VIP; 5%). The analysis of double-stained tissue sections revealed that all CGRP-, VIP- and LEnk-immunoreactive FB+ perikarya were simultaneously ChAT-positive. The vast majority of the neurons expressing SP- or NOS-immunoreactivity were also cholinergic in nature; however, solitary somata were ChAT-negative. FB+ perikarya were surrounded by numerous varicose nerve fibres (often forming basket-like structures) immunoreactive to LEnk or SP. They were also associated with some CGRP-, NOS- and neuropeptide Y-positive nerve terminals.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Doświadczalne wyznaczanie położenia środka ciężkości obrotowego nadwozia koparek kołowych
    Experimental method of center of gravity localization for rotary body of wheel excavators
    Autorzy:
    Augustynowicz, J.
    Dudek, K.
    Figiel, A.
    Nowak, J.
    Kluczkiewicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/169723.pdf
    Data publikacji:
    2011
    Wydawca:
    Poltegor-Instytut Instytut Górnictwa Odkrywkowego
    Tematy:
    koparka kołowa
    nadwozie obrotowe
    środek ciężkości
    analiza stateczności
    wheel excavator
    rotary body
    center of gravity
    stability analysis
    Opis:
    Przedstawiono doświadczalną metodę określania położenia środka ciężkości nadwozia maszyn roboczych. Analiza statystycznych wyników pomiarów nacisków w punktach podparcia nadwozia koparki przy skrajnych położeniach wysięgnika urabiającego - skrajnym górnym, dolnym oraz środkowym umożliwiają wyznaczenie współrzędnych środka ciężkości obrotowego nadwozia oraz jego całkowitej masy.
    Experimental method of center of gravity localization for working machines bodies have been presented in the paper. Statistical analysis of results of forces measurements in the points of excavator body support during terminal position of an outrigger (terminal upper, lower and in the middle) enables definition of coordinates of center of gravity for rotary body and its total weight.
    Źródło:
    Górnictwo Odkrywkowe; 2011, 52, 3-4; 92-95
    0043-2075
    Pojawia się w:
    Górnictwo Odkrywkowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pathologic fractures in the course of a primary hyperparathyroidism
    Autorzy:
    Prashar, A.
    Dudek, W.
    Prystupa, A.
    Kurys-Denis, E.
    Krupski, W.
    Sawa-Sierocinska, J.
    Mosiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/3711.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2012, 06, 1
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modern tendencies in the design of autonomous utility vehicles
    Autorzy:
    Mężyk, A.
    Czapla, T.
    Klein, W.
    Krzystała, E.
    Gembalczyk, G.
    Domagała, D.
    Dudek, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/245027.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    autonomous vehicles
    machine design
    utility vehicles
    hybrid drive
    Opis:
    The article discusses the role of the modern approach to the design of autonomous utility vehicles. The study has been exemplified by a currently designed multi-purpose hybrid engineer vehicle. The article covers the application of modern hybrid drive and the suspension allowing for the regulation of the tension wheel. The drive system used in the described vehicle is a serial type. In contrast to the conventional solutions used so far in a similar vehicle, this system eliminate heavy and difficult parts to produce (e.g., gears) which allows to significant reduction of a vehicle's weight. The suspension system is based on the classical concept - with a torsional shafts. A movable tension wheel is an innovative element, which has been used in this suspension system. When the wheel is in the lower position the area of pressure increased so the force exerted on the ground is less. This option is useful in difficult, muddy off-road conditions. The Volvo Company wants to apply similar capabilities in their prototype diggers. In the article, the importance of the external appearance of the vehicle has been considered as well. A removable cab allows the remote control of the vehicle at any time and the same has been provided as an example of a modern solution concerning the external appearance of the vehicle.
    Źródło:
    Journal of KONES; 2015, 22, 1; 227-234
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania drugiej fazy nad skutecznością i bezpieczeństwem długotrwałej powtarzalnej szybkoczęstotliwościowej przezczaszkowej stymulacji magnetycznej w terapii depresji
    2nd phase clinical examination of the efficacy and safety of prolonged rapid-rate repetitive transcranial magnetic stimulation in the treatment of depression
    Autorzy:
    Zyss, T.
    Zięba, A.
    Dudek, D.
    Datka, W.
    Siwek, M.
    Wróbel, A.
    Grabski, B.
    Mączka, G.
    Brudkiewicz, P.
    Wojnar, N.
    Łączyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/261554.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
    Tematy:
    przezczaszkowa stymulacja magnetyczna
    terapia
    depresja
    transcranial magnetic stimulation
    therapy
    depression
    Opis:
    W artykule zaprezentowano wyniki badań klinicznych drugiej fazy nad bezpieczeństwem i efektywnością przezczaszkowej stymulacji magnetycznej (TMS – Transcranial Magnetic Stimulation) w porównaniu z terapią elektrowstrząsową oraz samodzielną farmakoterapią. Do badań zakwalifikowano 75 pacjentów, których przydzielono losowo do trzech grup. We wszystkich grupach po zastosowaniu terapii stan kliniczny pacjentów wyraźnie się poprawił (objawy depresji ustąpiły). Najlepszy efekt zaobserwowano w grupie poddanej zabiegom elektrowstrząsowym oraz zażywającej leki przeciwdepresyjne. Nie udało się wykazać, że terapia łącząca stymulację magnetyczną z farmakoterapią była bardziej skuteczna od samodzielnego leczenia farmakologicznego. Podjęto próbę wyjaśnienia nieskuteczności przezczaszkowej stymulacji magnetycznej.
    The paper presents the results of the 2nd phase clinical examination of the safety and efficiency of the transcranial magnetic stimulation TMS, compared to the electroconvulsive therapy and standalone pharmacotherapy. 75 patients were enrolled into the study. They were divided randomly into three groups. The significant improvement of clinical state (diminishment of depressive symptoms) was achieved in all groups. The best effect was observed in the group of patients treated with the electroconvulsive therapy, combined with the drugs. However, transcranial magnetic stimulation, along with pharmacotherapy did not prove to be more effective than standalone pharmacological treatment. Possible explanations of ineffectiveness of the transcranial magnetic stimulation therapy is given.
    Źródło:
    Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2011, 17, 4; 301-307
    1234-5563
    Pojawia się w:
    Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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