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    Wyświetlanie 1-9 z 9
    Tytuł:
    Synthesis and Spectroscopic Study of Europium(III) in Heteropolyanion [EuP$\text{}_{5}$W$\text{}_{30}$O$\text{}_{110}$]$\text{}^{12-}$
    Autorzy:
    Lis, S.
    Elbanowski, M.
    But, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1945636.pdf
    Data publikacji:
    1996-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.40.Ha
    78.40.-q
    42.62.Hk
    78.55.-m
    Opis:
    The heteropolyanions of Preyssler anion [NaP$\text{}_{5}$W$\text{}_{30}$O$\text{}_{110}$]$\text{}^{14-}$ and its europium-encrypted derivative [EuP$\text{}_{5}$W$\text{}_{30}$O$\text{}_{110}$]$\text{}^{12-}$ were prepared and spectroscopically characterized. The compositions of these heteropolyanions were verified based on the results from elemental and thermogravimetric analysis and the data of spectrophotometric determination of tungsten contents. Absorption in the UV-vis and IR region and luminescence spectra, as well as results of the laser-induced europium ion luminescence spectroscopy, obtained for solid complexes and their solutions, were analysed. Both in solid and solution the europium-encrypted derivative has three water molecules of hydration.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 2; 361-366
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role of open-air inhalatoria in the air quality improvement in spa towns
    Autorzy:
    Burkowska-But, Aleksandra
    Kalwasińska, Agnieszka
    Brzezinska, Maria
    Powiązania:
    https://bibliotekanauki.pl/articles/2178868.pdf
    Data publikacji:
    2014-08-06
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    health resort
    airborne microorganisms
    air quality
    spa towns
    Opis:
    Objectives: The present study was aimed at evaluating microbiological contamination of air in Ciechocinek and Inowrocław – Polish lowland spa towns. Additionally, the impact of open-air inhalatoria on the quality of air was evaluated. Material and Methods: Air samples were collected seasonally in the urban areas, in the recreation areas and in the vicinity of inhalatoria in both towns using impaction. The numbers of mesophilic bacteria, staphylococci, hemolytic bacteria and actinomycetes were determined on media according to the Polish Standard PN-86/Z-04111/02. The number of moulds was determined on media according to the Polish Standard PN-86/Z-04111/03. Results: While the highest numbers of microorganisms were noted at the sites located in the urban areas, the lowest numbers were noted in the vicinity of the open-air inhalatoria. In all the investigated air samples the values of bioaerosol concentrations were below the recommended TLVs (≤ 5000 CFU×m⁻³ for both bacteria and fungi in outdoor environments). Location of the sampling site was invariably a decisive factor in determining the number of microorganisms in the air. Conclusions: The aerosol which is formed in the open-air inhalatoria has a positive influence on microbiological air quality. Owing to a unique microclimate and low air contamination, Ciechocinek and Inowrocław comply with all necessary requirements set for health resorts specializing in treating upper respiratory tract infections.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2014, 27, 4; 560-570
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbiological contamination of water in fountains located in the city of Torun, Poland
    Autorzy:
    Burkowska-But, A.
    Swiontek Brzezinska, M.
    Walczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/50320.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
    Tytuł:
    Dynamics of the condition of genesial health of women working on chemical production
    Autorzy:
    Esis, E.
    Naumov, I.
    Tishchenko, E.
    But-Gusaim, L.
    Aleksandrovich, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2052271.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
    Tematy:
    genesial health
    women
    chemical production
    Opis:
    In modern social and economic conditions the condition of genesial health (further - GH) the female population remains to one of the most acute medico-social problems, being a national security prominent aspect. Research objective: scientifically to justify a complex of the preventive actions referred on optimization of medico sanitary maintenance of women working on chemical synthesis. Materials and methods: work is based on the systemic approach to a studied problem. Following methods are applied: sanitary-and-hygienic and sanitary-statistical. Effect of factors of industrial medium were evaluated on value of hygienic parameters in premises of shops of Open Society «Grodno Nitrogen» in a place of work of the patients, received at realization of gauging at the next certification of jobs for working conditions. For an estimation of condition GH of working women of chemical synthesis results of periodic medical examination and a condition of a case rate with time disablement (further - TD) during 2008-2012 are studied. At studying of a condition of genesial health of women working on Open Society «Grodno Nitrogen» it is established, that their professional work in the conditions of effect of harmful production factors of the chemical, physical and psycho physiological nature is accompanied by its aggravation that is shown by growth of a gynecologic and extra genital case rate, and also an obstetric pathology including with temporary disablement. For prophylaxis of disturbances GH of the yielded contingent of working women introduction of a complex of sanitary-and-hygienic, socially-hygienic, treatment-prophylactic actions is necessary.
    Źródło:
    Health Problems of Civilization; 2014, 08, 4; 9-15
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EPR Study of Gadolinium(III) Complexes with Heteropolyanions: [Gd(SiW$\text{}_{11}$O$\text{}_{39}$)$\text{}_{2}$]$\text{}^{13-}$ and [GdP$\text{}_{5}$W$\text{}_{30}$O$\text{}_{110}$]$\text{}^{12-}$
    Autorzy:
    Szyczewski, A.
    Lis, S.
    Kruczyński, Z.
    Pietrzak, J.
    But, S.
    Elbanowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1945634.pdf
    Data publikacji:
    1996-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    76.30.Kg
    Opis:
    The gadolinium complexes: [Gd(SiW$\text{}_{11}$O$\text{}_{39}$)$\text{}_{2}$]$\text{}^{13-}$ [I] and [GdP$\text{}_{5}$W$\text{}_{30}$O$\text{}_{110}$]$\text{}^{12-}$ (Gd-encrypted Preyssler anion) [II] have been chosen for EPR study. This study is a continuation of our recent investigation related to solid gadolinium complexes: β-diketonates and aminopolycarboxylates. The EPR spectra of the Gd-polyoxometalates studied provide much better resolution than those recently studied. The spectra of Gd-polyoxometalates containing 1.7 to 2.5% of Gd(III) do not require an additional computer processing for correct interpretation. It is on the contrary to the β-diketonates and polyaminocarboxylates (with the content of Gd(III) 22-33%) for which the use of the RKU computer program (based on Fourier transform) was necessary in order to enhance the spectra resolution thus improving their correct interpretation. The EPR spectra obtained for the compounds I and II markedly differ from the U-spectrum characteristic of Gd(III) in glasses. Taking into account the spin-Hamiltonian calculations the existence of Gd(III) ion in two different surroundings: in a strong crystal field of rhombic symmetry and in a weak crystal field, is observed. The differences observed between the case I and II seem to be related to a various hydration degree.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 2; 345-351
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Compact terahertz devices based on silicon in CMOS and BiCMOS technologies
    Autorzy:
    But, Dmytro B.
    Chernyadiev, Alexander V.
    Ikamas, Kęstutis
    Kołaciński, Cezary
    Krysl, Anastasiya
    Roskos, Hartmut G.
    Knap, Wojciech
    Lisauskas, Alvydas
    Powiązania:
    https://bibliotekanauki.pl/articles/2204176.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    terahertz
    teraFET
    CMOS
    THz emitter
    THz detectors
    Opis:
    This paper reports on compact CMOS-based electronic sources and detectors developed for the terahertz frequency range. It was demonstrated that with the achievable noise-equivalent power levels in a few tens of pW/√Hz and the emitted power in the range of 100 μW, one can build effective quasi-optical emitter-detector pairs operating in the 200–266 GHz range with the input power-related signal-to-noise ratio reaching 70 dB for 1 Hz-equivalent noise bandwidth. The applicability of these compact devices for a variety of applications including imaging, spectroscopy or wireless communication links was also demonstrated.
    Źródło:
    Opto-Electronics Review; 2023, 31, 2; art. no. e144599
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    THz Double-Grating Gate Transistor Detectors in High Magnetic Fields
    Autorzy:
    But, D.
    Dyakonova, N.
    Coquillat, D.
    Teppe, F.
    Knap, W.
    Watanabe, T.
    Tanimoto, Y.
    Boubanga Tombet, S.
    Otsuji, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1409591.pdf
    Data publikacji:
    2012-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.57.Kp
    85.30.Tv
    73.43.Qt
    Opis:
    Double-grating-gate field-effect transistors have a great potential as terahertz detectors. This is because the double grating gate serves not only for carrier density tuning but also as an efficient THz radiation coupler. In this paper, we present characterization of these transistors using high magnetic fields. Low and high magnetic field data are used to determine the electron mobility and electron concentration, respectively, in different parts of the transistor channel.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 6; 1080-1082
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of UIOT for offshore surveys through autonomous vehicles
    Autorzy:
    Sanchez, Pedro Jose Bernalte
    Márquez, Fausto Pedro García
    Govindara, Shashank
    But, Alexandru
    Sportich, Benjamin
    Marini, Simone
    Jantara, Valter Junior
    Papaelias, Mayorkinos
    Powiązania:
    https://bibliotekanauki.pl/articles/1955604.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    Underwater Internet of Things (UIoT)
    autonomous underwater vehicles
    unmanned surface vehicles
    clean energy
    data management
    data transmission
    Opis:
    The ENDURUNS project is a European Research project of the Horizon 2020 framework, which has as its main objective to achieve the optimum and intelligent use of green hydrogen energy for long-term ocean surveys. The ENDURUNS system comprises an Unmanned Surface Vehicle (USV) and an Autonomous Underwater Vehicle (AUV) with gliding capability. The power pack of the USV integrates Li-ion batteries with photovoltaic panels, whilst the AUV employs Li-ion batteries and a hydrogen fuel cell. It is essential to develop a continuous monitoring ca-pability for the different systems of the vehicles. Data transmission between the devices onboard presents challenges due to the volume and structure of the different datasets. A telecommunications network has been designed to manage the operational components considered in the project. The autonomous vehicles perform measurements, providing their position and other data wirelessly. The system will generate a great volume of various signals during the survey. The Remote Control Centre needs to be interfaced with the vehicles in order to receive, manage and store the acquired data. An Underwater Internet of Things (IoT) platform is designed to establish efficient and smart data management. This study presents an exhaustive survey to analyse the telecommunication systems employed in the autonomous vehicles, including the back-end, user interface and mobile units. This paper presents the novel design of the hardware and software structure of the ENDURUNS project with regard to the literature, where its components and their in-terconnection layers are detailed, which is a novel scientific and technological approach for autonomous seabed surveying in deep oceans or in coastal areas.
    Źródło:
    Polish Maritime Research; 2021, 3; 175-189
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Terahertz Response of a Point Contact Based on CdTe/CdMgTe Quantum Well in Magnetic Field
    Autorzy:
    Grigelionis, I.
    Białek, M.
    Grynberg, M.
    Czapkiewicz, M.
    Kolkovskiy, V.
    Wiater, M.
    Wojciechowski, T.
    Wróbel, J.
    Wojtowicz, T.
    But, D.
    Knap, W.
    Łusakowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1409358.pdf
    Data publikacji:
    2012-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    85.30.Hi
    73.20.Mf
    Opis:
    A photoresponse at THz frequencies of a quantum point contact fabricated on a CdTe/CdMgTe quantum well was studied at low temperatures as a function of magnetic field. The spectra show a structure which was interpreted as resulting from the cyclotron resonance and magnetoplasmon excitations. The wavelength of the fundamental magnetoplasmon mode was found to be about 2 μm which coincides with one of dimensions of the point contact. We also discuss the possibility of coupling of magnetoplasmon modes to shallow impurity transitions in the quantum well.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 6; 1069-1072
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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