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    Wyświetlanie 1-9 z 9
    Tytuł:
    Characteristics and current situation of urban forests in Kharkiv region
    Autorzy:
    Babenko, V.
    Sułkowska, M.
    Musienko, S.
    Lyalin, O.
    Tkach, L.
    Wydawca:
    The Committee on Forestry Sciences and Wood Technology of the Polish Academy of Sciences and the Forest Research Institute in Sekocin Stary
    Cytata wydawnicza:
    Musienko, S., Lyalin, O., Tkach, L., Babenko, V., & Sułkowska, M. (2018). Characteristics and Current Situation of Urban Forests in Kharkiv Region, Folia Forestalia Polonica, 60(3), 183-191.
    Opis:
    The main aim of our study was to examine the current state and to analyse the prospects of the development of urban forests in the city of Kharkiv. Modern methods of assessment and forest resources ranking were used in the evaluation process. The data from the last basic forest inventory and the electronic database of the ‘Ukrderzhlisproekt’ Production Association are used.Conducted investigation enables to assess the state of the urban forests in Kharkiv, to show the division of forest resources by the land category, to list the species composition according to the forests stakeholders as well as to compare the existing and optimal division subject to the age group and to calculate the average forest valuation indicators. Our results indicated that the urban forests have different indicators in the context of permanent users. The existing division of the forest stands by the age group and average forest valuation indicators do not satisfy the optimal ones. Thereby, the vital problem in solving the issue of the conducting forestry in the urban forests transferred to the scientific base for the provision of their optimal growth, development and carrying out of their functions in full exists to date.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    ZnO films: propeties determined by electronic microscopy and ellipsometry
    Autorzy:
    Rakov, M.
    Poperenko, L.
    Tkach, V.
    Yurgelevich, I.
    Tematy:
    reactive magnetron sputtering
    Beattie’s method
    semi-infinite medium
    AFM
    SEM
    nanostructures
    Pokaż więcej
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Powiązania:
    https://bibliotekanauki.pl/articles/385183.pdf  Link otwiera się w nowym oknie
    Opis:
    Zinc oxide is a good material for application in nanoand optoelectronics due to its notable features, for example, large band gap. In this work ZnO films deposited by reactive magnetron sputtering at various pressure of residual gases and different temperatures of the substrate are investigated. The spectral dependences of ellipsometric parameters and of the films are determined by ellipsometry. The effective values of optical constants and are calculated. The roughness and the texture of the surfaces are obtained by Atomic-Force Microscopy (AFM) and Scanning Electronic Microscopy (SEM). One indicates that the refractive index decreases when reducing the pressure of residual gases, and the roughness decreases when elevating the temperature of the substrate. Thus, the behavior of some properties of the films at various conditions of deposition is determined.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of temporary decommissioning impact on reliability and durability of oil pipelines
    Autorzy:
    Poberezhny, L.
    Martyniuk, R.
    Stanetsky, A.
    Poberezhna, L.
    Tkach, O.
    Hrytsanchuk, A.
    Tematy:
    oil pipeline
    conservation
    temporary decommissioning
    probability of non-destruction
    pipeline steel 13G1S-U
    rurociąg naftowy
    konserwacja
    wycofanie tymczasowe z eksploatacji
    prawdopodobieństwo nieniszczenia
    stal rurociągowa
    Pokaż więcej
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Powiązania:
    https://bibliotekanauki.pl/articles/367993.pdf  Link otwiera się w nowym oknie
    Opis:
    Purpose: Due to changes in the volume of oil transportation, part of the pipelines must be temporarily decommissioned. The purpose of the work is theoretical and experimental study of pressure fluctuations during operation of oil pipelines and their impact on the durability of the pipeline material in work state and after temporary decommissioning (conservation). Design/methodology/approach: The results of oil pressure fluctuation research have given a chance to choose the terms of experimental research providing of the pipe metal mechanical features changes research during oil pipeline exploitation. Findings: Fatigue test modes are selected based on the calculations of the mathematical model developed. Experimental studies of the dependence of the fatigue strength of the pipe material on the conditions of operation have been carried out, which made it possible to determine the parameters of the fatigue curve of the samples. Has been defined that fatigue strength for the new metal pipe samples is more for 20-25% than for the metal samples which had the contacts with lime milk and for 30-40% more than for metal samples which were under exploitation. Research limitations/implications: In the future, more combination of "pipe material - preservation medium" should be explored to establish pain of general regularities. Practical implications: The probabilistic curves of the pipeline non-destruction are constructed, which will be used for practical calculations of the reliability and durability of the 13G1S-U steel pipelines. Originality/value: Mathematical model is made that describes non-stationary oil moves in oil pipeline, that has been caused by jump like changes of oil supply in oil pipeline, on this basis was defined, that oil pressure in oil pipeline provides within non stationary process in a range of 0.4-0.6 Hz frequency and amplitude fluctuation of pressure is 0.1-0.5 MPa.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Amorphous 5f Ferromagnetic Hydrides $UH_{3}Mo_{x}$
    Autorzy:
    Tkach, I.
    Kim-Ngan, N.
    Maškova, S.
    Andreev, A.
    Matěj, Z.
    Havela, L.
    Tematy:
    75.50.Kj
    75.50.Vv
    72.15.Cz
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/1369135.pdf  Link otwiera się w nowym oknie
    Opis:
    γ-U metal, stabilized down to room temperature in the bcc structure by Mo doping, can absorb hydrogen at high $H_{2}$ pressures only. The product is amorphous hydride $UH_{3}Mo_{x}$ analogous to $β-UH_{3}$. Such hydrides are ferromagnetic with high Curie temperatures (up to 200 K), enhanced with respect to $β-UH_{3}$. Magnetic moment of U also increases. Large disorder together with high anisotropy lead to a very high coercivity, reaching 4 T at low temperatures. As amorphization normally tends to suppress magnetic ordering of U compounds, such hydrides represent a new class of materials, amorphous U-based ferromagnets with relatively high Curie temperature.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Superconductivity in U-T Alloys (T = Mo, Pt, Nb, Zr) Stabilized in the Cubic γ-U Structure
    Autorzy:
    Sowa, S.
    Kim-Ngan, N.
    Krupska, M.
    Paukov, M.
    Tkach, I.
    Havela, L.
    Tematy:
    81.05.Bx
    74.70.Ad
    72.15.Cz
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/1398594.pdf  Link otwiera się w nowym oknie
    Opis:
    Using ultrafast cooling (with the cooling rate up to 10⁶ K/s) helps to minimize the T-alloying concentration (T = Mo, Pt, Pd, Nb, Zr) necessary to retain the γ-U phase down to low temperatures. All investigated splat-cooled U-T alloys become superconducting with $T_{c}$ in the range of 0.61-2.11 K. The bulk character of superconductivity can be concluded for some of the splats when comparing the specific-heat anomaly at $T_{c}$ with the BCS theory prediction.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nanostructural Superconducting Materials for Fault Current Limiters and Cryogenic Electrical Machines
    Autorzy:
    Prikhna, T.
    Gawalek, W.
    Savchuk, Ya.
    Sergienko, N.
    Moshchil, V.
    Sokolovsky, V.
    Vajda, J.
    Tkach, V.
    Karau, F.
    Weber, H.
    Eisterer, M.
    Joulain, A.
    Rabier, J.
    Chaud, X.
    Wendt, M.
    Dellith, J.
    Danilenko, N.
    Habisreuther, T.
    Dub, S.
    Meerovich, V.
    Litzkendorf, D.
    Nagorny, P.
    Kovalev, L.
    Schmidt, Ch.
    Melnikov, V.
    Shapovalov, A.
    Kozyrev, A.
    Sverdun, V.
    Kosa, J.
    Vlasenko, A.
    Tematy:
    74.25.Sv
    74.81.Bd
    74.70.Ad
    74.78.Na
    74.62.Fj
    74.25.Ld
    74.62.Dh
    74.25.Ha
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/1549637.pdf  Link otwiera się w nowym oknie
    Opis:
    Materials of the Y-Ba-Cu-O (melt-textured $YBa_{2}Cu_{3}O_{7-δ}$-based materials or MT-YBCO) and Mg-B-O ($MgB_{2}$-based materials) systems with high superconducting performance, which can be attained due to the formation of regularly distributed nanostructural defects and inhomogeneities in their structure can be effectively used in cryogenic technique, in particular in fault current limiters and electrical machines (electromotors, generators, pumps for liquid gases, etc.). The developed processes of high-temperature (900-800°C) oxygenation under elevated pressure (16 MPa) of MT-YBCO and high-pressure (2 GPa) synthesis of $MgB_{2}$-based materials allowed us to attain high superconductive (critical current densities, upper critical fields, fields of irreversibility, trapped magnetic fields) and mechanical (hardness, fracture toughness, Young modulus) characteristics. It has been shown that the effect of materials properties improvement in the case of MT-YBCO was attained due to the formation of high twin density (20-22 $μm^{-1}$), prevention of macrocracking and reduction (by a factor of 4.5) of microcrack density, and in the case of $MgB_{2}$-based materials due to the formation of oxygen-enriched as compared to the matrix phase fine-dispersed Mg-B-O inhomogeneities as well as inclusions of higher borides with near-$MgB_{12}$ stoichiometry in the Mg-B-O matrix (with 15-37 nm average grain sizes). The possibility is shown to obtain the rather high $T_{c}$ (37 K) and critical current densities in materials with $MgB_{12}$ matrix (with 95% of shielding fraction as calculated from the resistant curve).
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimal information for studies of extracellular vesicles 2018 (MISEV2018) : a position statement of the International Society for Extracellular Vesicles and update of the MISEV2014 guidelines
    Autorzy:
    Criado, Miria Ferreira
    Russell, Ashley E.
    Giusti, Ilaria
    Camussi, Giovanni
    Isin, Mustafa
    Blenkiron, Cherie
    Meehan, Katie L.
    Scott, Aaron
    Neri, Christian
    Verweij, Frederik J.
    Kim, Kwang Pyo
    Libregts, Sten F.
    Chen, Shuai
    Zocco, Davide
    Archer, Fabienne
    Osteikoetxea, Xabier
    Hoffmann, Karl F.
    Erdbrügger, Uta
    Mertens, Inge
    Driedonks, Tom A. P.
    McVey, Mark J.
    Laitinen, Saara
    Johnson, Suzanne M.
    Schøyen, Tine Hiorth
    Gualerzi, Alice
    Bongiovanni, Antonella
    Lunavat, Taral R.
    Gorski, Sharon M.
    Visnovitz, Tamás
    Soekmadji, Carolina
    van Balkom, Bas W. M.
    Rughetti, Aurelia
    Rouschop, Kasper M. A.
    Giebel, Bernd
    Gustafson, Dakota
    Harrison, Paul
    van Herwijnen, Martijn J. C.
    Watson, Dionysios C.
    Duarte, Filipe V.
    Kawamura, Yumi
    Swift, Simon
    Lemos, Debora S.
    O'Driscoll, Lorraine
    Torrecilhas, Ana Claudia
    Mariscal, Javier
    Vader, Pieter
    Borràs, Francesc E.
    Liao, Ke
    Cheng, Lesley
    Zivkovic, Angela M.
    Minciacchi, Valentina R.
    Myburgh, Kathryn H.
    Klingeborn, Mikael
    Yan, Xiaomei
    Martinez, M. Carmen
    Nolan, John P.
    Vechetti Jr., Ivan J.
    Elie-Caille, Celine
    Wheelock, Asa M.
    Clerici, Stefano P.
    Wehman, Ann M.
    Dhondt, Bert
    Lu, Quan
    Boireau, Wilfrid
    Shekari, Faezeh
    Soares, Rodrigo Pedro
    Rayyan, Morci S.
    Lavieu, Gregory
    Laurent, Louise C.
    Lannigan, Joanne
    Raffai, Robert L.
    Gupta, Gopal N.
    Aikawa, Elena
    Rak, Janusz
    Clayton, Aled
    Jørgensen, Malene Møller
    De Santana Junior, Eliezer F.
    Busatto, Sara
    Sánchez, Catherine
    Ostrowski, Matias
    Gärtner, Kathrin
    Vella, Laura J.
    Jung, Stephanie
    Berardi, Anna C.
    Ibrahim, Ahmed Gamal-Eldin
    Mathieu, Mathilde
    Hochberg, Fred H.
    Kierulf, Peter
    Meckes Jr., David G.
    Zuba-Surma, Ewa
    Leszczynska, Aleksandra
    Najrana, Tanbir
    Dominguez Rubio, Ana Paula
    Baxter, Amy A.
    Jayachandran, Muthuvel
    Ortiz, Luis A.
    Musante, Luca
    Peinado, Hector
    Viñas, Jose L.
    Marcilla, Antonio
    De Wever, Olivier
    Deville, Sarah
    Radeghieri, Annalisa
    Langevin, Scott M.
    Tomasini, Richard
    Chaudhuri, Amrita Datta
    Dieterich, Lothar C.
    Muraca, Mauricio
    Handberg, Aase
    Lombard, Catherine A.
    Fricke, Fabia
    Llorente, Alicia
    Huber, Veronica
    Dolo, Vincenza
    Shatnyeva, Olga
    Lázaro-Ibáñez, Elisa
    Raimondo, Stefania
    Nazarenko, Irina
    Prada, Ilaria
    Jovanovic-Talisman, Tijana
    Inal, Jameel M.
    Buck, Amy H.
    Frelet-Barrand, Annie
    Gabrielsson, Susanne
    Jenster, Guido
    Hooten, Nicole Noren
    Perut, Francesca
    Carter, David R. F.
    Brisson, Alain
    Baldacchino, Shawn
    Linnemannstöns, Karen
    Quesenberry, Peter
    Zhang, Jian-ye
    Bachurski, Daniel
    Lovett, Jason
    Ricklefs, Franz L.
    Boilard, Eric
    Van Deun, Jan
    Krause, Mirja
    Alcaraz, Maria Jose
    Ramirez, Marcel I.
    Zappulli, Valentina
    Zhao, Zezhou
    Ayre, D. Craig
    Weaver, Alissa
    Shelke, Ganesh Vilas
    Anderson, Johnathon D.
    Jiang, Lanzhou Z.
    Devitt, Andrew
    Lenassi, Metka
    Brennan, Meadhbh Á.
    Martin-Jaular, Lorena
    Nejsum, Peter
    Gaudin, Raphael
    McGinnis, Lynda K.
    Nimrichter, Leonardo
    Wahlgren, Jessica
    Toh, Wei Seong
    Buschmann, Dominik
    Bebawy, Mary
    Chen, Chihchen
    Van Keuren-Jensen, Kendall
    Strasser, Erwin F.
    Fuhrmann, Gregor
    Pegtel, D. Michiel
    Tkach, Mercedes
    Lörincz, Ákos M.
    Xu, Jing
    Regev-Rudzki, Neta
    Holder, Beth
    Ikezu, Tsuneya
    Khamari, Delaram
    Ochiya, Takahiro
    Pfaffl, Michael W.
    Haraszti, Reka A.
    Buzás, Edit I.
    Xander, Patricia
    Malhi, Harmeet
    Mussack, Veronica
    Polakovicova, Iva
    Bobis-Wozowicz, Sylwia
    Sharma, Shivani
    Nieuwland, Rienk
    Žėkas, Vytautas
    Antoniou, Anna
    Sódar, Barbara W.
    Bergese, Paolo
    Lötvall, Jan
    van Royen, Martin E.
    Weber, Viktoria
    Zheutlin, Alexander R.
    Tiwari, Swasti
    Huang, Yiyao
    Loyer, Xavier
    Wauben, Marca H. M.
    Möller, Andreas
    Wolfram, Joy
    Yáñez-Mó, Maria
    Bosch, Steffi
    Di Vizio, Dolores
    Rohde, Eva
    Görgens, André
    Webber, Jason P.
    Kano, Shin-ichi
    Morales-Kastresana, Aizea
    Rome, Sophie
    Beckham, Carla
    Falcón-Pérez, Juan M.
    Kusuma, Gina D.
    Shetty, Ashok K.
    Wiener, Zoltán
    Powell, Bonita H.
    Jay, Steven M.
    Silva, Andreia M.
    Wendt, Sebastian
    Bedina Zavec, Apolonija
    Greening, David W.
    Keller, Evan T.
    Fish, Jason E.
    Hegyesi, Hargita
    Lim, Sai Kiang
    Sotillo, Javier
    Breakefield, Xandra
    Flores-Bellver, Miguel
    Gardiner, Chris
    Saul, Meike J.
    Languino, Lucia R.
    Kaur, Sukhbir
    Mariani, Jacopo
    Shahaj, Eriomina
    Brigstock, David R.
    Das, Saumya
    Veit, Tiago D.
    van der Grein, Susanne G.
    Crescitelli, Rossella
    Coffey, Robert J.
    Li, Isaac T. S.
    Duncan, Heather M.
    Atkin-Smith, Georgia K.
    Pisetsky, David S.
    Martens-Uzunova, Elena S.
    Zickler, Antje M.
    Burger, Dylan
    Yin, Hang
    Tixeira, Rochelle
    Eichenberger, Ramon M.
    Raposo, Graca
    Khomyakova, Elena
    Le Lay, Soazig
    Maugeri, Marco
    Schneider, Raphael
    von Strandmann, Elke Pogge
    van Wijnen, Andre J.
    Broekman, Marike L. D.
    van Niel, Guillaume
    O'Loghlen, Ana
    Breglio, Andrew M.
    Roberts, David D.
    Tahara, Hidetoshi
    Coumans, Frank A. W.
    Chin, Andrew R.
    Bromberg, Jacqueline F.
    Dominici, Massimo
    Witwer, Kenneth W.
    Hunt, Stuart
    Robbins, Paul D.
    Holthofer, Harry
    Lowry, Michelle C.
    Jong, Ambrose
    Andaloussi, Samir E. L.
    Jackson, Hannah K.
    Hill, Andrew F.
    Fatima, Farah
    Snyder II, Orman L.
    Xagorari, Angeliki
    Toxavidis, Vasilis
    O'Grady, Tina
    Balaj, Leonora
    Arab, Tanina
    Zheng, Lei
    Nolte-'t Hoen, Esther N. M.
    Försönits, András
    Urbanelli, Lorena
    Andriantsitohaina, Ramaroson
    Gimona, Mario
    Stahl, Philip D.
    Goberdhan, Deborah C. I.
    Velot, Émilie
    Chamley, Lawrence W.
    Stott, Shannon L.
    Gho, Yong Song
    Lee, Myung-Shin
    Salas-Huenuleo, Edison
    Demaret, Tanguy
    Nawaz, Muhammad
    Welsh, Joshua A.
    Chang, Yu-Ting
    Witte, Leonie
    Siljander, Pia R.-M.
    Bryl-Górecka, Paulina
    Couch, Yvonne
    Tewari, Muneesh
    Hendrix, An
    Caruso, Sarah
    Jones, Jennifer C.
    Gilbert, Caroline
    Tosar, Juan Pablo
    Ivanova, Alena
    Muth, Dillon C.
    Zarubova, Jana
    Skowronek, Agata
    Martins, Vilma Regina
    Poon, Ivan K. H.
    Jacobsen, Soren
    Park, Jaesung
    Ekström, Karin
    Kovács, Árpád Ferenc
    Benmoussa, Abderrahim
    Bach, Jean-Marie
    Mathivanan, Suresh
    Dourado, Mauricio R.
    Bielska, Ewa
    Cordeiro-da-Silva, Anabela
    Kuypers, Sören
    Lorenowicz, Magdalena J.
    Saugstad, Julie A.
    Byrd, James Bryan
    Lässer, Cecilia
    Kalluri, Raghu
    Olivier, Martin
    Boulanger, Chantal M.
    Kislinger, Thomas
    Ligeti, Erzsebet
    Lim, Rebecca
    Maas, Sybren L. N.
    Stoorvogel, Willem
    Vasconcelos, M. Helena
    Weiss, Daniel J.
    Mullier, Francois
    Bauer, Natalie N.
    Kurochkin, Igor V.
    Sahoo, Susmita
    Krasemann, Susanne
    Théry, Clotilde
    Ortiz, Alberto
    Vukman, Krisztina V.
    Zimmermann, Pascale
    D'Souza-Schorey, Crislyn
    Gross, Julia Christina
    Buch, Shilpa
    de Candia, Paola
    Morhayim, Jess
    Khvorova, Anastasia
    Baharvand, Hossein
    Hosseinkhani, Baharak
    Lee, Yi Xin Fiona
    Phinney, Donald G.
    Pulliam, Lynn
    Coyle, Beth
    del Portillo, Hernando A.
    Linē, Aija
    Bussolati, Benedetta
    Gámez-Valero, Ana
    Kosanović, Maja M.
    Lukomska, Barbara
    Kornek, Miroslaw
    Neri, Tommaso
    Cocucci, Emanuele
    Schiffelers, Raymond M.
    Hu, Guoku
    Cocks, Alex
    Pink, Ryan C.
    Shiba, Kiyotaka
    Timms, Kate
    Østergaard, Ole
    Pieters, Bartijn C. H.
    Klinke II, David J.
    Vestad, Beate
    Rodrigues, Silvia C.
    Saá, Paula
    Krämer-Albers, Eva-Maria
    Yuana, Yuana
    Opis:
    The last decade has seen a sharp increase in the number of scientific publications describing physiological and pathological functions of extracellular vesicles (EVs), a collective term covering various subtypes of cell-released, membranous structures, called exosomes, microvesicles, microparticles, ectosomes, oncosomes, apoptotic bodies, and many other names. However, specific issues arise when working with these entities, whose size and amount often make them difficult to obtain as relatively pure preparations, and to characterize properly. The International Society for Extracellular Vesicles (ISEV) proposed Minimal Information for Studies of Extracellular Vesicles ("MISEV") guidelines for the field in 2014. We now update these "MISEV2014" guidelines based on evolution of the collective knowledge in the last four years. An important point to consider is that ascribing a specific function to EVs in general, or to subtypes of EVs, requires reporting of specific information beyond mere description of function in a crude, potentially contaminated, and heterogeneous preparation. For example, claims that exosomes are endowed with exquisite and specific activities remain difficult to support experimentally, given our still limited knowledge of their specific molecular machineries of biogenesis and release, as compared with other biophysically similar EVs. The MISEV2018 guidelines include tables and outlines of suggested protocols and steps to follow to document specific EV-associated functional activities. Finally, a checklist is provided with summaries of key points.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-9 z 9

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