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    Wyświetlanie 1-5 z 5
    Tytuł:
    Posture Stability Evaluation Using Static Posturography in Patients after Cruciate Ligament Reconstruction
    Autorzy:
    Kubisz, L.
    Werner, H.
    Bosek, M.
    Weiss, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1504202.pdf
    Data publikacji:
    2011-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.19.lu
    87.19.R-
    87.19.U-
    Opis:
    Ligament reconstruction is one of the surgical methods for treatment of anterior cruciate ligament injury. The main purpose of rehabilitation after surgical ligament reconstruction is to obtain maximal efficiency of knee joint, their stability and appropriate lower limbs encumbrance. Static posturography is one of the control, rehabilitative and diagnostic tools in such treatment. The purpose of the study was to evaluate the posture stability differences between healthy people and patients after anterior cruciate ligament reconstruction. The centre of pressure sway was registered using the standard posturography platform (Pro-med). During the test, the subject stood freely with eyes open and closed. In order to determine the stability of the subject, the average velocity of the centre of pressure sway, and the average accretion rate of surface area encircled by centre of pressure, a mean radius of centre of pressure and amount of its displacement were calculated. Parameters measured for the eyes closed posture were significantly greater for people after anterior cruciate ligament reconstruction, while differences between groups for eyes open test were statistically insignificant. This indicates impairment of the somatosensoric posture control system. It should be noted that selected stability indicators: an average velocity of the centre of pressure sway, its anterior-posterior and mediolateral components, a mean radius of centre of pressure and a mean accretion rate of surface area encircled by centre of pressure varied in both groups.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 6A; 957-960
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanizm oporności na leki platynowe oraz strategie pokonywania tego zjawiska
    The mechanism of resistance to platinum drugs and strategies to overcome this phenomenon
    Autorzy:
    Weiss-Gradzińska, W.
    Krzempek, W.
    Trynda-Lemiesz, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/172324.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    leki platynowe
    oporność lekowa
    leczenie nowotworów
    influx
    efflux
    nanorurki węglowe
    cisplatyna
    platinum drugs
    drug resistance
    cancer therapy
    carbon nanotubes
    cisplatin
    Opis:
    Platinum drugs belong to one of the oldest [2] and best investigated groups of cytotoxic drugs. On account of their high efficacy and alkylating-like action [14] they are used in a treatment of various types of neoplasms [3–5]. Despite investigators’ best efforts survival time of patients diagnosed with cancer is still short. Responsible for the fact is high toxicity of used therapeutic methods and development of resistance to them [3–5, 19]. In this paper authors review reasons behind decreased sensitivity of neoplastic cells to platinum treatment and discuss the newest promising trends in its overcoming. Due to different properties of neoplastic cells, availability of a chemotherapeutic agent inside a tumour is limited [9–12]. Moreover continuous development of resistance to platinum drugs further decreases their cellular concentration and inactivates their functions. Also owing to increased activity of DNA repair systems, higher tolerance to genome deformations and numerous mechanisms that lead to impaired apoptosis, drug efficacy is reduced [3-5, 19]. In order to increase a potency of platinum agents new therapeutic strategies are investigated. Coadministration with resistance modulators [20, 22, 23] and combination therapy with other antineoplastic drugs [8, 24–30] have already proved their effectiveness. Additionally, newer generations of platinum drugs are developed [15–18]. Mostly platinum(IV) prodrug complexes often releasing axial ligands with their own pharmacological action [5, 6, 31], but also multi-nuclear platinum compounds that form more complex DNA-adducts [32–35]. Other strategies include the development of innovative dosage forms such as single walled carbon nanotubes (SWCNTs), multiwalled carbon nanotubes (MWCNTs) [38, 39] or encapsulation [36, 37]. Finally utilisation of oncolytic viruses could be a way to selectively destroy neoplastically transformed cells [40].
    Źródło:
    Wiadomości Chemiczne; 2013, 67, 11-12; 1105-1128
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative Morphological Analysis of Graphene on Copper Substrate obtained by CVD from a Liquid Precursor
    Autorzy:
    Weiss, M.
    Walkowiak, M.
    Wasiński, K.
    Półrolniczak, P.
    Kokocińska, B.
    Strupiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032380.pdf
    Data publikacji:
    2017-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.65.Pq
    81.05.ue
    Opis:
    Graphene film has been produced on untreated Cu substrate by a chemical vapor deposition technique in ambient pressure with liquid ethanol serving as the carbon precursor. The obtained material has been subjected to morphological study, directly on Cu substrate, by means of optical microscopy, scanning electron microscopy, atomic force microscopy, and a detailed Raman analysis. As a benchmark material, graphene obtained on Cu by a conventional CVD from gaseous methane was used. This simple experimental setup has proved to enable obtaining large area graphene samples with nearly 100% substrate coverage and large domains of one carbon layer. As compared to graphene from gaseous precursor, the presented approach resulted in visibly more defects and impurities. These imperfections are due to more complex precursor molecular structure and lack of Cu pretreatment with hydrogen, the later cause being easy to eliminate in course of further optimization of the method. The described approach can be regarded as a viable, low-cost, and experimentally simple alternative for the existing techniques of producing large area graphene. By providing direct comparison with the conventional method, the paper's intention is to provide deeper insight and to fill gap in the understanding of mechanisms involved in graphene formation on copper.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 6; 1497-1506
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of thickness of topsoil and nutrients on wheat yield at reclaimed deposited fly ash soils in the mining area of Huainan city
    Wpływ grubości warstwy ornej gleby oraz zawartej w niej pożywce oraz popiołów lotnych z rejonu górniczego Huainan city mineralnej na plony pszenicy
    Autorzy:
    Xi, W.
    Yan, J. P.
    Xu, L. J.
    Xu, G. Q.
    Makowsky, L.
    Marx, B.
    Weiss, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/348686.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    podłoże
    warstwa glebowa
    rekultywacja terenu
    substrate
    reclaimed land
    topsoil
    Opis:
    Coal mining is the dominating industry in the study area of Huainan (Province Anhui, China). As a consequence, subsidence of the surface takes place reaching up to 21 m. It is predicted that nearly 7.700 km2 will be affected until the end of coal mining activity. As a countermeasure, reclamation is done by depositing coal mining waste or fly ash. These substrates are covered with topsoil for agricultural use. The aim of this study is the relationship of the pH value, nutrients supply and water balance and other index between thickness of topsoil, in order to achieve sustainable and economic application of the reclaimed land.
    W niniejszej pracy badano wpływ na środowiska przemysłowej Huainan (Prowincja Anhui, Chiny). Wykazano, że na tym obszarze subsydencja powierzchni sięga do 21 m. Oszacowano, że blisko 7700 km2 powierzchni zostanie dotknięte działalnością górniczą, dopóki prace górnicze nie zostaną wstrzymane. Aby zapobiec temu stanowi rzeczy, wykonuje się prace rekultywacyjne polegające na składowaniu odpadów górniczych oraz popiołów lotnych. Tę warstwę pokrywa się warstwą gleby ornej celem umożliwienia na tym terenie wprowadzenia upraw rolnych. Celem niniejszej pracy było ustalenia związku pomiędzy wartością pH value, a dostarczaniem nawozów sztucznych do gleby, jak również określenie bilansu wodnego potrzebnego do wykonania rekultywacji terenu.
    Źródło:
    AGH Journal of Mining and Geoengineering; 2012, 36, 3; 415-421
    1732-6702
    Pojawia się w:
    AGH Journal of Mining and Geoengineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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