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    Wyświetlanie 1-11 z 11
    Tytuł:
    Organizational aspects of knowledge transfer and commercialization of public research at Polish universities
    Organizacyjne aspekty transferu wiedzy i komercjalizacji wyników badań na polskich uczelniach
    Autorzy:
    Kardas, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/256768.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
    Tematy:
    Technology Transfer Office
    special purpose vehicle
    knowledge transfer
    university
    innovation policy
    centrum transferu technologii
    spółka celowa
    transfer wiedzy
    uniwersytet
    polityka innowacyjna
    Opis:
    The paper discusses organizational aspects of knowledge transfer and the commercialization of public research at Polish universities. It presents the evolution of national legislation in the field of knowledge transfer and commercialization and distinguishes four basic organizational models of these processes at universities: administrative, technology transfer offices, special purpose vehicles, and mixed. The strengths and weaknesses of each model are discussed. It also presents the main challenges and problems associated with the organizational aspects of knowledge transfer and commercialization, and it proposes some possible solutions in this matter.
    W artykule omówiono aspekty organizacyjne transferu technologii na polskich uczelniach. Przedstawiono ewolucję krajowych regulacji prawnych w obszarze transferu technologii oraz wyróżniono cztery bazowe modele organizacyjne transferu technologii w uczelniach: administracyjny, centrów transferu technologii, spółek celowych i mieszany. Omówiono mocne i słabe strony każdego z nich. Przedstawiono również główne wyzwania i problemy związane z wymiarem organizacyjnym transferu technologii oraz propozycje rozwiązań w tym zakresie.
    Źródło:
    Problemy Eksploatacji; 2016, 2; 59-69
    1232-9312
    Pojawia się w:
    Problemy Eksploatacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel potential of pancreatic-like enzymes of microbial origin in exocrine pancreatic insufficiency - study on a pig model
    Autorzy:
    Szwiec, K.
    Goncharova, K.
    Velverde-Piedra, J.L.
    Ushakova, G.
    Kovalenko, T.
    Osadchenko, I.
    Kardas, M.
    Swieboda, P.
    Podgurniak, P.
    Winiarczyk, M.
    Grochowska-Niedworok, E.
    Lozinska, L.
    Filip, R.
    Pierzynowski, S.G.
    Powiązania:
    https://bibliotekanauki.pl/articles/3181.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    pancreatic-like enzyme
    microbial enzyme
    exocrine pancreatic insufficiency
    porcine model
    pig
    animal model
    enzyme activity
    Opis:
    Introduction. The standard porcine-derived pancreatic enzyme replacement therapy (PERT) is a lifesaving treatment for patients with diseases causing exocrine pancreatic insufficiency (EPI). An attempt to replace PERT with microbial enzymes were undertaken. The aim was to highlight whether the mode of application, mixed with food or applied directly to the stomach, of pancreatic-like enzymes of microbial origin (PLEM) can affect their activity along the gastrointestinal tract. Materials and method. The activity of amylase, lipase and proteinase in the stomach, duodenum and ileum were tested in EPI pigs (n=6) after supplementation of PLEM, either orally – before and during feed consumption – or via the stomach – before and during feed consumption. Healthy pigs not treated with PLEM (n=3) served as controls. Activity of the enzymes measured in the chyme were obtained together with the digesta pH. Activity of the enzymatic residues in the stool samples was also checked. Results. The highest pancreatic enzyme activities were found in the duodenum of the healthy pigs (amylase 162,68 kU/ mL, lipase 507,34 kU/mL and protolitic (trypsin) activity 357,60 kU/mL). Nevertheless, the microbial enzymes remained also active along the entire length of the GIT – including stomach in EPI pigs, regardless of their route of administration. However, activity level was significantly lower. Discussion. Results indicate that the activity pattern of PLEM in the small intestine mimics the activity of the natural endogenous pancreatic enzymes in healthy pigs. The most physiological features of PLEM were observed when enzymes were offered orally. The magnitude of PLEM activity in the stomach of EPI pigs was essential and significantly higher than that measured in healthy pigs, thus being somewhat not physiological, and for health reasons of the patients should be further explored. Interestingly, specific trypsin-like activity was measured in all parts of the GIT after PLEM application. However, proteolytic activity of the experimental proteaze in in vitro studies did not exhibit trypsin-like activity.
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2015, 09, 1
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of the efficiency of braking energy recovery in rail transport by changing arrival time
    Autorzy:
    Urbaniak, M.
    Kardas-Cinal, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/214921.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Kolejnictwa
    Tematy:
    rail transport
    regenerative braking
    optimization of energy recuperation
    traffic organization
    Opis:
    The article refers to the previous work of the authors, in which the model of traffic organization of cooperating trains including the optimization of the use of energy returned to the catenary was presented. In the presented article, the model was modified by changing the main control variable, which affects the efficient use of energy. Departure time was changed for the arrival time of the train to the stop or station. The optimization is done by controlling the arrival time to the station in the acceptable (scheduled) range while maintaining the scheduled departure time. This model assumed optimization using the interval halving method (bisection) to achieve the optimal solution. The modified optimization method has been implemented in the original model of railway traffic organization. It considers the optimal use of energy recovered during electrodynamic braking using the energy transmission strategy to the catenary, assuming the cooperation of a train pair and volume of all recovered energy and stop time at the station.
    Źródło:
    Problemy Kolejnictwa; 2018, 180; 133-139
    0552-2145
    2544-9451
    Pojawia się w:
    Problemy Kolejnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristic of tar content and syngas composition during beech updraft gasification
    Autorzy:
    Kluska, J.
    Kazimierski, P.
    Ochnio, M.
    Kardaś, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191789.pdf
    Data publikacji:
    2019
    Wydawca:
    Gdańska Szkoła Wyższa
    Tematy:
    gasification tar
    updraft gasifier
    beech wood
    GC-MS spectrometry
    Opis:
    This work aims at study the effect of the operating conditions like equivalence ration and temperature on the updraft gasification of beech wood. The main aspects was to analyze the influence of temperature distribution in the reactor and equivalence ratio on the fuel consumption, syngas composition as well as tar formation characteristics during the gasification process. The light tar content and composition were analysed using gas chromatography coupled with mass spectrometry (GC-MS). Experimental results have shown that the amount of air supplied does not affect the parameters of the gasification process linearly. For lower ER value there was high fuel consumption and high bed temperature in the gasifier, which results in high caloric value of syngas. The results showed that tar yield during updraft gasification depends on the temperature and equivalence ratio. With the increase value of ER and the decrease of temperature on the surface of the bed, the total amount of tar yield increased. The highest temperature on the surface of the bed leads to the smallest tar yield, which can be associated with thermal cracking. The results indicate that both light and heavy tar are changing nonlinearly with different operating conditions. In addition, with decreasing temperature and increasing ER values, the amount of phenol and oxidized aliphatic compounds in the tar samples increased while the BTEX amount decreased. The amount of PAHs, in relation to the temperature and ER, was kept low in all cases.
    Źródło:
    Eco-Energetics: technologies, environment, law and economy; 2019, 2; 63--78
    2657-5922
    2657-7674
    Pojawia się w:
    Eco-Energetics: technologies, environment, law and economy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of downdraft and updraft gasification of biomass in a fixed bed reactor
    Autorzy:
    Kluska, J.
    Ochnio, M.
    Kazimierski, P.
    Kardaś, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/240106.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gasification
    biomass
    thermochemical conversion
    gazyfikacja
    biomasa
    termochemiczna konwersja
    Opis:
    The aim of this study was to compare and analyze the gasification process of beech wood. The experimental investigation was conducted inside a gasifier, which can be operated in downdraft and updraft gasification system. The most important operating parameter studied in this paper was the influence of the amount of supply air on the temperature distribution, biomass consumption and syngas calorific value. The results show that the amount of air significantly influences the temperature in the combustion zone for the downdraft gasification process, where temperature differences reached more than 150 °C. The increased amount of air supplied to the gasifier caused an increase in fuel consumption for both experimental setups. Experimental results regarding equivalence ratio show that for value below 0.2, the updraft gasification is characterized by a higher calorific value of producer gas, while for about 0.22 a similar calorific value (6.5 MJ/Nm3) for both gasification configurations was obtained. Above this value, an increase in equivalence ratio causes a decrease in the calorific value of gas for downdraft and updraft gasifiers.
    Źródło:
    Archives of Thermodynamics; 2018, 39, 4; 59--69
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental study of thermal pyrolysis of turkey feathers
    Autorzy:
    Kardaś, D.
    Kluska, J.
    Szuszkiewicz, J.
    Szumowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/298156.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    thermal pyrolysis
    turkey feathers
    gaseous products
    reactor
    Opis:
    The analysis of chemical composition of turkey feathers reveals over 50% mass content of carbon. Unfortunately, the feathers contain also over 13% by weight of nitrogen and over 2.5% of sulfur. The significant presence of nitrogen and sulfur in turkey feathers indicates potential danger to the environment. The experiments of thermal pyrolysis of turkey feathers were done from a perspective of energy production potential out of gaseous products. The products of thermal pyrolysis were mainly gas and liquid. The calorific value of pyrolysed feathers is comparable with the one of hard carbon. It gets higher for higher temperatures. The calorific value of gaseous products of turkey feathers at 850oC was maximum and it equalled 16.7 MJ/Nm3.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(2); 115-124
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pyrolysis of biomass and refuse-derived fuel performance in laboratory scale batch reactor
    Autorzy:
    Kluska, J.
    Klein, M.
    Kazimierski, P.
    Kardaś, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/240079.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    slow pyrolysis
    fast pyrolysis
    oil
    refuse derived fuel
    powolna piroliza
    szybka piroliza
    olej
    paliwo z odpadów
    Opis:
    The results of pyrolysis of pine chips and refuse derived fuel fractions are presented. The experiments were carried out in a pilot pyrolysis reactor. The feedstock was analyzed by an elemental analyzer and the X-ray fluorescence spectrometer to determine the elemental composition. To find out optimum conditions for pyrolysis and mass loss as a function of temperature the thermogravimetric analysis was applied. Gases from the thermogravimetric analysis were directed to the infrared spectrometer using gas-flow cuvette to online analysis of gas composition. Chemical composition of the produced gas was measured using gas chromatography with a thermal conductivity detector and a flame ionization detector. The product analysis also took into account the mass balance of individual products.
    Źródło:
    Archives of Thermodynamics; 2014, 35, 1; 141-152
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermogravimetric analysis/pyrolysis of used tyres and waste rubber
    Autorzy:
    Januszewicz, K.
    Klein, M.
    Klugmann-Radziemska, E.
    Kardas, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/110485.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    pyrolysis of polymers
    kinetic reaction
    scrap tyres
    waste rubber
    Opis:
    The process of pyrolysis is investigated in this paper. The pyrolysis results of two samples: waste tyres and rubber at different heating rates (10, 20, 50 K/min), were compared. In other experiments the degradation of two pyrolysis products, char and oil was examined. The kinetic study using the thermogravimetry equipment (TG) was done, which allowed determination of the kinetic mechanism of the process. The elemental analysis of the samples was performed.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2017, 53, 2; 802-811
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing a Model of Peripheral Nerve Graft Based on Natural Polymers
    Opracowanie modelu protezy nerwu obwodowego z polimeru naturalnego
    Autorzy:
    Kucharska, M.
    Niekraszewicz, A.
    Kardas, I.
    Marcol, W.
    Larysz-Brysz, M
    Lewin-Kowalik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/233598.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    biopolymers
    peripheral nerve
    prosthesis
    chitosan
    biopolimery
    protezy nerwów obwodowych
    chitozan
    Opis:
    Presented are the results of investigations into the preparation of a peripheral nerve prosthesis. The prosthesis is built up of a multichannel core having a diameter of 2 to 5 mm. The core prepared by freeze drying is housed in a polymeric sleeve. The prosthesis core is made of microcrystalline chitosan (MCCh) while the sleeve is prepared from poly(DL-lactide-coglycolide) copolymer. The usefulness of the prepared biomaterial was assessed by in vivo testing on animals.
    W pracy przedstawiono badania prowadzące do opracowania modelu protezy nerwu obwodowego. Proteza zbudowana jest z wielokanałowego rdzenia o średnicy od 2 do 5 mm wytworzonego metodą liofilizacji i osadzonego w tulei polimerowej. Rdzeń protezy wytworzono z mikrokrystalicznego chitozanu (MKCh), natomiast tuleję stanowi błona uzyskana z resorbowalnego kopolimeru poli(DL-laktyd-ko-glikolid). Opracowany biomateriał poddano ocenie przydatności w warunkach in vivo z wykorzystaniem zwierząt.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2012, 6B (96); 115-120
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Are dietary supplements dangerous? Assessing how society perceives the usage of dietary supplements - results of the preliminary analysis of nationwide survey data
    Autorzy:
    Kardas, P.
    Dorozynski, J.
    Zdanowicz, P.
    Tyrna, D.
    Lis, P.
    Mroczka, M.
    Lewek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1767.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Opolski. Instytut Nauk o Zdrowiu
    Tematy:
    human nutrition
    dietary supplement
    nutrient
    questionnaire method
    food safety
    adverse effect
    Opis:
    Background: Dietary supplements (DSs) are concentrated sources of nutrients and/or other substances, whose purpose is to supplement the normal diet. Their consumption in Poland has been on the rise, leading to numerous concerns. However, current legislation does not provide any background for a relevant pharmacovigilance system. Therefore, little is known about their adverse effects (AEs) or patterns of use in Poland. To shed some light on this, we conducted a nationwide survey. Aim of the study: To assess the prevalence of, and the reasons for, the use of dietary supplements in Poland via national survey with a collection and an analyse of supposed adverse effects of dietary supplements. Material and methods: The study was conducted using an online survey based on the original questionnaire. In this report, we present the results of the analysis of the first 200 responses. Results: As many as 55.5% (111) of respondents were ‘definitely sure’ or ‘rather sure’ about DSs safety. However, 70.5% (141) believed that they could have negative effects. Over 3/4 (153) of respondents used DSs themselves, and 61.0% (122) used them within last 12 months. Of those using DSs, 11.1% (17) reported diverse Aes, with GI tract irritation and mental disturbances being the most common (experienced by 35.3% (6), and 17.6% (3) of those reporting AE s, respectively). Conclusions: Respondents had mixed feelings about DS safety. Despite that, they used these products frequently. Of a note is high incidence of adverse effects experienced by DS users. This undoubtedly points to the need for a relevant pharmacovigilance system.
    Źródło:
    Medical Science Pulse; 2018, 12, 2
    2544-1558
    2544-1620
    Pojawia się w:
    Medical Science Pulse
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Alteration in diurnal and nocturnal melatonin serum level in patients with chronic heart failure
    Autorzy:
    Dzida, G.
    Prystupa, A.
    Lachowska-Kotowska, P.
    Kardas, T.
    Kamienski, P.
    Kimak, E.
    Halabis, M.
    Kicinski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/49722.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2013, 20, 4
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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