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    Wyświetlanie 1-13 z 13
    Tytuł:
    Johann Christian Müller, Meines Lebens Vorfälle und Neben-Umstände, 1. Teil: Kindheit und Studienjahre (1720–1746), hrsg. v. Katrin Löffler, Nadine Sobirai; 2. Teil: Hofmeister in Pommern (1746–1755), hrsg. v. Katrin Löffler, Nadine Sobirai; 3. Teil: Pastor in Stralsund (1755–1766), hrsg. v. Katrin Löffler; 4. Teil: Pastor in Stralsund (1767–1770), hrsg. v. Katrin Löffler
    Autorzy:
    Zientara, Włodzimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/2197795.pdf
    Data publikacji:
    2022-09-30
    Wydawca:
    Towarzystwo Naukowe w Toruniu
    Źródło:
    Zapiski Historyczne; 2022, 87, 3; 167-172
    0044-1791
    2449-8637
    Pojawia się w:
    Zapiski Historyczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison between Linear Electromagnetic Accelerators
    Autorzy:
    Siaenen, T.
    Löffler, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807926.pdf
    Data publikacji:
    2009-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    85.70.Rp
    Opis:
    For symmetric Taylor tests a 2 m long electromagnetic accelerator will be used to accelerate 100 g rods up to 300 m/s. Only a small variance of the muzzle parameters, velocity and exit time, is tolerable. In order to find the most reliable, simple and efficient accelerator type, an axial coilgun, a flat-channel accelerator and an augmented railgun are compared using a lumped parameter model. In particular, the accelerator mutual inductances and their gradients characterize the propulsive forces. The essential advantages of the flat-channel geometry over the axial coilgun geometry are shown. The geometric improvements of the flat-channel accelerator open the way for the augmented railgun suitable and effective for the planned application. To minimize the variance of the muzzle parameters, modular capacitor banks with semiconductor switches allow the dynamic control of the railgun current, in principle.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 6; 1089-1091
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model of a factory structure under changeability aspects in automotive manufacturing
    Autorzy:
    Löffler, C.
    Westkämper, E.
    Unger, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/99557.pdf
    Data publikacji:
    2011
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    model of a factory structure
    changeability
    manufacturing
    Opis:
    The complexity in automotive manufacturing increased enormously in the last couple of years. Reasons therefore are due to a widened product portfolio, enlarged manufacturing capacities distributed over several manufacturing sites and a large number of suppliers feeding the manufacturing network around the world. The factories are under permanent change and must be planned, configured and adapted in a permanent way. Consequently, planning tasks go along with a comparable degree of complexity as the manufacturing itself and must stand the continuous change manufacturing is faced with. Therefore, a factory model representing the essential information about the products, the technological resources and their interdependencies must be built for planning purposes. In context of long-term strategic planning tasks, structural changes are in specific focus and must be considered in the model. In this paper, a model of a factory structure, which can be used for the strategic planning of a manufacturing network is proposed. The factory structure model is based on a current configuration and has the architecture to consider future change within forecasts and scenarios.
    Źródło:
    Journal of Machine Engineering; 2011, 11, No. 1-2; 35-45
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modular transportation system with a three dimensional routeing
    Autorzy:
    Löffler, C.
    Canders, W. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/141161.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    3D-Linear Motor
    passive switch
    Steep turn
    logistic
    modular transportation system
    Opis:
    In intra-enterprise logistics and automation of manufacturing processes general a rising productivity by high flexibility is required. Existing transportation systems exclusively use two-dimensional track sections, because they can be served with standard drives. Because of these simple structures the transport speed is limited and thereby also the throughput. In this paper now a modular transportation system is presented which could reach higher speeds with a direct drive and the use of centrifugal force compensating curves. Simultaneously the system also can change the altitude. All this succeeds with the integration of three-dimensional track sections. Therefore a two piped guiding system with a long stator linear motor was designed. To combine the linear motor with the three dimensional track special stator elements were developed which allow a bending of the stator to follow the route course. The current work deals with the implementation of a mechanical passive switch, which is operated by the electromagnetic forces of the linear motor. So no additional mechanical actors or a separate electromagnetic system are necessary.
    Źródło:
    Archives of Electrical Engineering; 2015, 64, 4; 641-654
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficient Terahertz Pulse Generation in Laser-Induced Gas Plasmas
    Autorzy:
    Löffler, T.
    Kress, M.
    Thomson, M.
    Roskos, H. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041638.pdf
    Data publikacji:
    2005-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Re
    72.30.+q
    78.47.+p
    Opis:
    In this contribution, we review the development of sources for far-infrared (terahertz) radiation based on laser-generated gas plasmas. We describe several generation mechanisms based on ponderomotive forces, external field screening, and optical second-harmonic biasing. These methods are compared with the standard techniques with respect to the achievable terahertz pulse energy.
    Źródło:
    Acta Physica Polonica A; 2005, 107, 1; 99-108
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Atom Probe Tomography Investigations of Modified Early Stage Clustering in Si-Containing Aluminum Alloys
    Autorzy:
    Pogatscher, S.
    Gerstl, S.
    Löffler, J.
    Uggowitzer, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402109.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.70.kd
    61.72.-y
    81.40.Gh
    Opis:
    In this paper atom probe tomography is used to explore early stage clustering in aluminum alloys. Two novel concepts for a modification of clustering are discussed. Control of early stage clustering is welcome from an application point of view since clustering deteriorates strength evolution during the industrial heat treatment of the important class of Al-Mg-Si precipitation-hardenable alloys. Nanoscale early stage clusters are very difficult to observe and atom probe tomography is the best technique to visualize and chemically measure Si or Mg-containing clusters in aluminum alloys. Restrictions remain in achieving the ultimate quantification of such small solute aggregates by atom probe tomography, such as detection efficiency, local magnification effects, surface migration of solute atoms, and unresolved issues with the reconstruction procedure. Here we investigate one of these restricting effects, namely the migration of solute atoms during atom probe tomography measurements. In particular Si is found to be preferentially localized or absent at certain crystallographic poles in aluminum, which derogates the experimental results gained from atom probe tomography studies of clustering in Si-containing aluminum alloys. This artifact is investigated for different specimen temperatures, detection rates and pulse fractions during atom probe tomography measurements. Optimal strategies to analyze small-scale solute clusters in Si-containing aluminum alloys are presented.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 643-646
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molekularne materiały magnetyczne
    Molecular magnetic materials
    Autorzy:
    Löffler, M.
    Gałkowska, A.
    Korabik, M.
    Utko, J.
    Lis, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/172078.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    magnetyzm
    struktura krystaliczna
    magnesy molekularne
    SMMs
    SIM
    frustracja spinowa
    magnetism
    crystal structure
    molecular magnets
    spin frustration
    Opis:
    The „molecular” term appears more and more often in the materials chemistry. The Nobel Prize in 2016 was awarded to Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard R. Feringa „for the design and synthesis of molecular machines”. Magnetism in molecular scale, also known as molecular nanomagnetism, has been developing intensively since the second half of the last century. This branch of science involves the magnetic properties of coordination compounds of d- and f-electron metals. The paper presents results of the magnetic studies of molecular magnets of copper(II) and dysprosium(III), which have been pursuing in two doctoral thesis. The compounds form trinuclear and triangular molecules. The spin frustration phenomenon observed in the triangular relationship of copper(II) has been described. Since dysprosium(III) ion is characterized by a large magnetic anisotropy, the triangular, trinuclear coordination compound of dysprosium(III) of the formula [Dy3L5HLCl4]∙HL (where HL = 2-methoxyethanol) presents the characteristic properties of molecular magnets (SMMs) behavior. Two values of the energy barier were determined as Ueff/kB = 84,6 K and 31,2 K with the corresponding relaxation times τ0 = 1,82·10-6 s and 5,19·10-5 s. The data are probably attributed to different geometry of the coupled dysprosium ions.
    Źródło:
    Wiadomości Chemiczne; 2018, 72, 7-8; 523-541
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature Dependence of Photoluminescence from Epitaxial InGaAs/GaAs Quantum Dots with High Lateral Aspect Ratio
    Autorzy:
    Musiał, A.
    Sęk, G.
    Maryński, A.
    Podemski, P.
    Misiewicz, J.
    Löffler, A.
    Höfling, S.
    Reitzenstein, S.
    Reithmaier, J.
    Forchel, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492876.pdf
    Data publikacji:
    2011-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.67.Hc
    65.80.-g
    Opis:
    Hereby, we present a study of a thermal quenching of emission from self-assembled epitaxial highly asymmetric quantum dots in InGaAs/GaAs material system for both ensemble and single dot regime. Pronounced interplay between the intensity of wetting layer and quantum dots originated emission was observed as the temperature was increased, evidencing a thermally activated energy transfer between the two parts of the system and an important role of the wetting layer in determining the optical properties of these anisotropic nanostructures. The carrier activation energies have been derived and possible carrier loss mechanisms have been analyzed. Single dot study revealed activation energies slightly varying from dot to dot due to size and shape distribution. The problem of the shape uniformity of individual quantum dot has also been addressed and possibility of additional carrier localization within the investigated structures has been found to be insignificant based on the recorded spectroscopic data.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 5; 883-887
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Permissibility of Interventions Into Fundamental Rights and Freedoms in the Exercise of Police and Security Activities
    Autorzy:
    Peťovský, Marián
    Loffler, Boris
    Powiązania:
    https://bibliotekanauki.pl/articles/1374878.pdf
    Data publikacji:
    2018
    Wydawca:
    Wyższa Szkoła Policji w Szczytnie
    Tematy:
    human rights and freedoms
    interference with human rights and freedoms
    police activity
    a legitimate aim
    prevention and prophylaxis
    Opis:
    This scientific study is part of research no. 130 Metenko Jozef, Methods of research and development of police activities, research no. 201 Metenko Jozef, Strengthening of European coordination in the field of national security research programmes for major events, research no.182 Metenko Jozef, Administrative practice for dialogue and communication, as the strategic principles of police activities for political manifestation and research no. 173 Metenko Jozef, Coordination of national research and policy to ensure security in major events in Europe. The scientific study deals with the issue of police interventions into fundamental rights and freedoms as a result of police activities connected to the execution of tasks and duties of police officers, and also with other provisions of the Act on the Police Force. The authors consider the rule of law to be synonymous with constitutional or legitimate governance and which also characterises the exercise of state authority on the basis of constitutionally issued laws. The authors associate police interventions with the protective function of the state, establish conditions for interference with fundamental rights and freedoms from the perspective of police activity which compliance with, or breaching of, indicates whether the particular rights and freedoms are violated or not by the intervention. Subsequently, the authors identified the concepts of prevention and prophylaxis, which they interpret on the basis of chosen international scientific results and conclusions.
    Źródło:
    Internal Security; 2018, 10(1); 69-84
    2080-5268
    Pojawia się w:
    Internal Security
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Społeczeństwo a wojna : wojna-kryzys-bunty mas
    Współwytwórcy:
    Bodziany, Marek. Redakcja
    Gwiazda-Rzepecka, Brygida. Redakcja
    Kotasińska, Anna. Redakcja
    Löffler, Berthold (1957- ). Redakcja
    Wyższa Szkoła Oficerska Wojsk Lądowych im. Generała Tadeusza Kościuszki (Wrocław). pbl
    Data publikacji:
    2014
    Wydawca:
    Wrocław : Wyższa Szkoła Oficerska Wojsk Lądowych imienia generała Tadeusza Kościuszki
    Tematy:
    Konflikt społeczny
    Konflikt międzynarodowy
    Społeczeństwo
    Wojna
    Socjologia
    Opis:
    Bibliogr., netogr. przy pracach.
    Dostawca treści:
    Bibliografia CBW
    Książka
    Tytuł:
    Thin Film Manganite-Metal Interconnection and "Loop Effect" Studies in CMR-Based High Magnetic Field Sensors
    Autorzy:
    Balevičius, S.
    Stankevič, V.
    Žurauskienė, N.
    Šimkevičius, Č.
    Liebfried, O.
    Löffler, M.
    Schneider, M.
    Abrutis, A.
    Plaušinaitienė, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807946.pdf
    Data publikacji:
    2009-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.47.Gk
    75.47.Lx
    85.70.Ay
    Opis:
    The design, technology and main characteristics of Ag contacts as well as "loop effect" peculiarities of colossal magnetoresistance B-scalar high magnetic field sensor based on $La_{1-x}(Ca)Sr_x$ $MnO_3$ films used for measuring high magnetic field pulses are presented.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 6; 1133-1135
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Few-Cycle Laser Pulses: The Carrier-Envelope Phase, Its Role in the THz Emission from Laser-Generated Plasmas and a New Way to Measure It
    Autorzy:
    Kress, M.
    Löffler, T.
    Thomson, M.
    Roskos, H.
    Dörner, R.
    Gimpel, H.
    Zrost, K.
    Ergler, T.
    Moshammer, R.
    Morgner, U.
    Ullrich, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813184.pdf
    Data publikacji:
    2008-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Re
    72.30.+q
    78.47.-p
    Opis:
    Terahertz emission from laser-generated air plasmas has recently been identified as an interesting source for THz radiation. High intensities and a large bandwidth of the THz pulses can be achieved. We briefly review several mechanisms which were employed to generate the quasi-static dipole moment needed for the optical rectification process. This leads us to a discussion of a specific application of THz emission from an air plasma, namely the investigation of the carrier-envelope phase of few-cycle optical pulses. Such pulses of a duration of less than 10 fs induce a spatial charge asymmetry in the plasma directly via non-linear tunneling ionization. The asymmetry, and with it the emission of the THz radiation from the plasma, depend on the carrier-envelope phase, with the consequence that one can determine the phase by measurement of the amplitude and polarity of the THz pulse.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 3; 769-776
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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