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Wyszukujesz frazę "Olchowik, R." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Influence of self-made saliva substitutes on tribological characteristics of human enamel
    Autorzy:
    Andrysewicz, E.
    Mystkowska, J.
    Dąbrowski, J. R
    Olchowik, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/307192.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    friction coefficient
    enamel
    human saliva
    linear wear
    saliva substitute
    współczynnik tarcia
    szkliwo
    ludzka ślina
    Opis:
    This paper describes the results of tests on the influence of human saliva and its substitutes on tribological characteristics of friction pairs. Each pair consists of enamel and one of the following materials: ceramics, the Meridian B2 dental composite, the GK dental amalgam, and Ti-6Al-4V titanium alloy. The saliva substitutes used were prepared using pyrophosphates, xanthan gum, and mucins dissolved in a saline buffer. The results of the tribological tests show that the values of the parameters under investigation (coefficient of friction and linear wear) were different from each other. Some similarity was observed between the evaluated level of wear characteristics after the friction process in the environment of human saliva and that in the environment of one of the mucins tested. Microscopic observations of the surfaces of the enamel samples after friction revealed varied forms of tribological wear.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2014, 16, 2; 67-74
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ temperatury na efektywność pracy krzemowych fotomodułów w środowisku południowo-wschodniej Polski
    Effect of temperature on the efficiency of silicon photomodules under the south-east Poland conditions
    Autorzy:
    Tomaszewski, R.
    Olchowik, J.
    Adamczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/311458.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    fotowoltaika
    konwersja fotowoltaiczna
    pozyskiwanie energii
    krzem
    photovoltaics
    photovoltaic conversion
    energy harvesting
    silicon
    Opis:
    Obecnie poszukuje się czystych ekologicznie, a jednocześnie odnawialnych źródeł energii. Jedną z ich form jest konwersja fotowoltaiczna z wykorzystaniem fotomodułów. Jednak o możliwości efektywnego wykorzystania tej formy pozyskiwania energii decydują warunki klimatyczne, takie jak: nasłonecznienie, usłonecznienie, ilość opadów, jak również i skład atmosfery ziemskiej. Polska, a w szczególności rejon południowo-wschodni odznacza się dobrymi parametrami do zastosowania tej formy pozyskiwania energii zarówno z wykorzystaniem konwerterów fototermicznych jak i fotowoltaicznych. W artykule przedstawiono analizę wpływu temperatury na wydajność konwersji fotowoltaicznej w warunkach południowo-wschodniej Polski.
    Currently there are looking for a clean and at the same time renewable energy sources . One of them forms is photovoltaic conversion using PV modules. However, the possibility of effective use of this form of energy production determine the climatic conditions such as sunlight, sunshine, rainfall, as well as the composition of Earth's atmosphere. Poland, in particular the region of south-east of Poland is characterized by good parameters to use this form of energy production from both the converters - using solar photothermal collectors and photovoltaic modules. This paper presents an analysis of the influence of temperature on photovoltaic conversion efficiency in conditions of Southeastern Poland.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 10; 431-437
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Arum-type of arbuscular mycorrhizae, dark septate endophytes and Olpidium spp. in fine roots of container-grown seedlings of Sorbus torminalis (Rosaceae)
    Autorzy:
    Bzdyk, R.M.
    Kohler, J.
    Olchowik, J.
    Aleksandrowicz-Trzcinska, M.
    Kirisits, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/56496.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    The aim of this study was to determine the mycorrhizal status of nursery seedlings of the wild service tree (Sorbus torminalis), which belongs to the Rosaceae family. Its mycorrhizal associations are still fragmentarily known, and data from the few existing studies indicate that it forms ectomycorrhizal symbiosis (ECM). We analyzed the degree of mycorrhizal colonization of thirty 2-year-old container-grown S. torminalis nursery seedlings, which belonged to three single-tree progenies. The roots were dominated by arbuscular mycorrhizae (AM), with the morphology of the Arum-type containing arbuscules, vesicles and hyphae; however, no ECM structures were found. The degree of root colonization of the analyzed seedlings by AM fungi was 83.6% and did not differ significantly between the three single-tree progenies. In addition to AM, structures of dark septate endophytes (0.7%) and sporangia of Olpidium spp. (1.1%) were found in wild service tree roots. In agreement with previous studies, we confirmed arbuscular mycorrhizae for S. torminalis. Moreover, this is the first report that roots of this Sorbus species show the Arum-type morphology of AM and are associated with Olpidium species.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2016, 85, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The human balance system and gender
    Autorzy:
    Olchowik, G.
    Tomaszewski, M.
    Olejarz, P.
    Warchoł, J.
    Różańska-Boczula, M.
    Maciejewski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/306531.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wzrost
    waga
    BMI
    gender
    kobieta
    mężczyzna
    computerised dynamic posturography
    height
    weight
    women
    men
    Opis:
    The human body balance system is a complex system of organs and mechanisms, which generate postural reactions to counter the displacement from the equilibrium position of the body centre of gravity, and which control eye movement in order to maintain a stable image of the environment. Computerised Dynamic Posturography (CDP) allows for a quantitative and objective assessment of the sensory and motor components of the body balance control system as well as of the integration and adaptive mechanisms in the central nervous system. The aim of this study was to determine the differences, when maintaining body balance, based on the gender of young, healthy people using CDP. The study was carried out on a group of 43 healthy subjects by comparing the effectiveness of the balance system in 22 women and 21 men aged between 20 and 26 years, between 171 and 177 cm in height, and without any clinical symptoms of balance disorders. The men and women were selected such that they did not differ significantly in height and BMI. Using the Equitest posturograph manufactured by NeuroCom International Inc. the following tests were performed: Sensory Organisation Test (SOT), Motor Control Test (MCT) and the Adaptation Test (ADT). The gender of young healthy individuals without any clinical symptoms of balance disorders also does not affect the effectiveness of the sensory system and the use of this signal in maintaining body balance.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2015, 17, 1; 69-74
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dizziness - pathogenesis, diagnosis and treatment
    Autorzy:
    Tomaszewski, M.
    Banakiewicz, K.
    Jajko, K.
    Szypowski, R.
    Zieliński, P.
    Zalewski, G.
    Olchowik, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2052447.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
    Tematy:
    dizziness
    labyrinth
    internal ear
    Opis:
    Dizziness is a symptom of many diseases. Patients very frequently come with such ailment to the hospital emergency department. It is a state which may last a few seconds or minutes and increase or recede with time. Therefore, the admitted patients frequently cannot assess their own illness in a precise and objective way. The dizziness definition is also quite ambiguous. Dizziness is defined as the sensation of one own’s body movement or spinning and movement of the surrounding. It is very important to record the patient’s medical history since the diagnostic procedure may depend on the symptoms’ character. Dizziness may be a symptom of a serious disease, although it is not easy to find its cause. It appears not only in case of the labyrinth and nervous system disorders, but also in the systemic and functional diseases. Dizziness and balance disorder are the direct cause of admitting one in every thirty patients. The symptom indicated the directly life-threatening disease only within the 3-8.5% of patients (cerebral circulation insufficiency - 6%, cardiac dysrhythmia – 1.5%, brain tumour < 1%). Analyzing the data concerning the problem of dizziness occurrence within the general population, it has been noticed that this symptom has been reported two or three times more frequent by women than by men. Dizzinesses are classified pathogenetically and clinically into labyrinthine and non-labyrinthine, paroxysmal and permanent, acute and chronic. Dizziness is hard to diagnose because the symptoms reported by patients are only their own subjective sensations. The data presented in the article implicate the increasing number of patients with such disorders. Apart from dizziness, the patients complain also about the hearing disorders and nausea, which make their proper functioning impossible. It is inappropriate to start the treatment without knowing the cause. Establishing, on the basis of patient’s medical history and physical examination, whether the dizziness is of peripheral or central origin, is essential for the further diagnosis. After establishing the main diagnosis, the casual and symptomatic treatment is implemented, in some cases - there is a vestibular rehabilitation or even a surgical treatment.
    Źródło:
    Health Problems of Civilization; 2015, 09, 1; 11-17
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The airway obstruction - important abrupt condition for pediatrics
    Autorzy:
    Tomaszewski, M.
    Banakiewicz, K.
    Jajko, K.
    Szypowski, R.
    Zieliński, P.
    Zalewski, G.
    Spisacka, S.
    Olchowik, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2052449.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
    Tematy:
    airway obstruction
    hypoxemia
    hypercapnia
    respiratory failure
    Opis:
    The ability of fast response in case of increasing health problems of a child which lead directly to life-threatening situations is a necessary condition for creating opportunity of child’s survival until it will be transported to intensive care unit, where it will be provided with care by a specialist. In case of healthy children the most common cause of acute respiratory failure is obstruction of upper respiratory tract. There is an enormous variety of causes of upper airway obstruction, but the most important are the result of congenital defects, acute inflammation, anaphylactic reactions, foreign body aspiration and injuries. Consequence of the hypoventilation resulting from significant impediment of airflow through the obstructed airways is impaired gas exchange in the lungs. This leads to the increasing hypoxemia (PaO 2 <60 mmHg) and hypercapnia (PaCO2> 45 mmHg). This condition is called the total respiratory failure. The persistence of hypoventilation leads to hypoxia of vital organs (heart muscle, brain), increased anaerobic metabolism, acidosis, and inevitably to cardiac arrest as a result of homeostasis disorders. Respiratory failure is defined as acute when developing suddenly and is potentially reversible. We can find such a situation in the fast-increasing stenosis of the larynx. Symptoms of severe dyspnoea occur in a short time, but can be interrupted by an effective airway patency. Acute respiratory failure is a state of direct threat to life, which is why it is crucial to give a prompt aid to the sick child. The aim of this paper is to discuss the signs and symptoms, knowledge of which is essential for rapid identification and initial differentiation of the causes of acute upper airway obstruction in children. The principles of first-aid for children with acute respiratory failure and above all the description of life-saving procedures will be presented.
    Źródło:
    Health Problems of Civilization; 2015, 09, 1; 18-22
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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