Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Muller, M." wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-72 z 72
    Tytuł:
    Adhesive bond of carbon steel S235J0: effects of aluminium and polymer powder filled epoxy adhesives on mechanical properties
    Autorzy:
    Müller, M.
    Valášek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/102623.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    adhesive bond strength
    SEM
    microparticles filler
    tensile strength
    elongation
    structural two-component epoxy
    Opis:
    The paper deals with the testing of composite materials based on aluminium and polymer microparticles. The aim of the research was to determine an influence of a content of a microparticle filler on mechanical properties of the polymer particle composite and adhesive bonds (material structural carbon steel S235J0). A preparation of adhesive bonds and a process of testing of the adhesive bonds were in accordance with the standard CSN EN 1465. The adhesive bond strength was increased when adding the aluminium and polymer powder filler. The adhesive bond strength increase was the highest at the adhesive bond with the adhesive in the form of the composite (15 g of the filler : 100 g of the matrix). The adhesive bond strength increase was 14.3% (13.68 ± 0.43 MPa). Adhesive bonds evinced an adhesive type of a fracture surface. By adding the filler in a form of microparticles there was a change of the failure type on adhesive-cohesive and a cohesive type. Fracture surfaces and an adhesive bond cut was examined with SEM (scanning electron microscopy) using a microscope MIRA 3 TESCAN.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 31; 87-93
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An improved formula for dead time correction of G-M detectors
    Autorzy:
    Arkani, M.
    Khalafi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/147009.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dead time model
    Geiger-Müller (G-M) detector
    decaying source experiment
    hybrid model
    Opis:
    Different analytical formulae have been described in the literature to modify response of Geiger-Müller (G-M) detectors. In this work, improvement of a previously proposed dead time correction formula was investigated. A set of experimental data of a decaying source was the basis of the analysis. A general agreement is seen with the experimental data. The result was compared with those obtained by the original work. Numerical aspects were also examined.
    Źródło:
    Nukleonika; 2013, 58, 4; 533-536
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of degreasing on adhesive joint strength
    Autorzy:
    Rudawska, A.
    Nalepa, J.
    Müller, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/102003.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    adhesive joints
    strength
    surface treatment
    degreasing
    Opis:
    The paper investigates the effects of degreasing, surface preparation methods in adhesive bonding and con adhesive joint strength. Five types of degreasing agents were used in the study: acetone, extraction naphtha, Ultramyt, Wiko and Loctite 7061. The degreasing operation was performed by three methods: rubbing, spraying and immersion. Strength tests were performed on single-lap adhesive joints of hot-dip galvanized metal sheets made with Loctite 9466 adhesive according to the above variants of surface preparation. The experimental results demonstrate that adhesive joint strength is significantly affected by the applied degreasing agent. Moreover, the method of application of the degreasing agent is crucial, too. The results of strength testing reveal that the most effective degreasing method for hot-dip galvanized metal sheet adhesive joints is spraying using extraction naphtha. Thereby, degreased samples have the highest immediate strength and shear strength. The use of extraction naphtha is also effective in combination with degreasing by rubbing; however, it is not effective when used in combination with immersion, as reflected in the lowest strength results.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 1; 75-81
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficient dead time correction of G-M counters using feed forward artificial neural network
    Autorzy:
    Arkani, M.
    Khalafi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/146121.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dead time
    artificial neural network (ANN)
    Geiger-Müller (G-M) detector
    hybrid model
    source decaying experiment
    Opis:
    Dead time parameter of Geiger-Müller (G-M) counters causes a great uncertainty in their response to the incident radiation intensity at high counting rates. As their applications in experimental nuclear science are widespread, many attempts have been done on improvements of their nonlinear response. In this work, response of a G-M counter system is optimized and corrected efficiently using feed forward artificial neural network (ANN). This method is simple, fast, and provides the answer to the problem explicitly with no need for iteration. The method is applied to a set of decaying source experimental data measured by a fairly large G-M tube. The results are compared with those predicted by a given analytical model which is called hybrid model. The maximum deviation of the corrected results from the true counting rates is less than 4% which is a significant improvement in comparison with the results obtained by the analytical method. Results of this study show that by using a proper artificial neural network structure, the dead time effects of G-M counters can be tolerated significantly.
    Źródło:
    Nukleonika; 2013, 58, 2; 317-321
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultrasound velocities and magnetomechanical coupling in Fe Co-Ni-Zr-Cu-Nb-B alloy strips after heat treatment
    Autorzy:
    Kaczkowski, Z.
    Muller, M.
    Lanotte, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/332820.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Opis:
    The magnetic field and beat-treatment dependences of the ultrasound velocities at constant magnetic field (CH) and at constant magnetic induction (cB) and magnetomechanical coupling were investigated in Fe62.5Co6Ni7.5Zr6Cu1Nb2B15 alloy strips in an as-quenched state and after annealing above the Curie temperature. After annealing above 350oC (up to 390oC) the magnetomechanical coupling coefficient (k) was three times higher than that for asquenched state (0.10-012), i.e. k = 0.32-0.37. The minimum values of the cH (= 3.6 km/s) were observed after annealing in the temperature range from 350 to 390oC at 75-100 A/m. There are equal or somewhat higher values of bias field for the minimum of the cH than in some other iron-rich amorphous alloys. Effect de was very small for as-quenched samples. When the samples reached the magnetic saturation, the domain structure vanished and then the Hooke's law was valid, i.e. EH = EB = E, where E was then material constant, known as Young's modulus and then the ultrasound velocities are also material constant.
    Źródło:
    Hydroacoustics; 2001, 4; 101-104
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Nanocrystallization Process on the Magnetomechanical Coupling in Fe-Si-B-Cu-Nb Alloy
    Autorzy:
    Kaczkowski, Z.
    Małkiński, L.
    Kuźmiński, M.
    Müller, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1861130.pdf
    Data publikacji:
    1994-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.80.+q
    75.60.Nt
    75.60.Ch
    Opis:
    Magnetic and magnetoelastic properties of the Fe$\text{}_{73.5}$Si$\text{}_{16.5}$B$\text{}_{6}$Cu$\text{}_{1}$Nb$\text{}_{3}$ alloy change considerably during nanocrystallization process. Improvement of magnetic properties is accompanied by the decrease in piezomagnetic parameters such as magnetomechanical coupling and $\Delta E$-effect.
    Źródło:
    Acta Physica Polonica A; 1994, 85, 1; 201-204
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The properties of regenerative polymer mass
    Autorzy:
    Rudawska, A.
    Wierzchowski, A.
    Müller, M.
    Petrů, J.
    Náprstková, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/102482.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    regeneration
    regenerative polymer mass
    mechanical properties
    Opis:
    The paper investigates the compression strength of samples of regenerative polymer mass RM 101 Resimetal Metal Repair Pasta manufactured by Rendor. The effect of weather conditions on selected mechanical properties of the tested mass is examined. The samples are subjected to seasoning at room temperature, in an environmental chamber, and in a thermal shock chamber. The samples for strength testing are made according to the adopted method. It has been observed that the samples seasoned at room temperature have the lowest strength, while the highest strength is exhibited by the samples subjected to seasoning in an environmental chamber at a temperature of 70°C and humidity of 95%. In addition, the paper compares the strength properties of regenerative polymer masses manufactured by Chester Molecular, Belzona, and Unirep, as well as of the widely used epoxy compound Epidian 57 mixed with the Z-1 curing agent with those of the Rendor mass. The properties of the above masses are obtained from the available literature.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 3; 130-138
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid lvl panels made of eucalypt and pine woods decayed by white-rot fungus
    Autorzy:
    Delucis, R.
    Herrera, R.
    Melo, R.
    Muller, M.
    Labidi, J.
    Gatto, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/52545.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2018, 61, 201
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent hybrid material slide component for machine tools
    Autorzy:
    Möhring, H. C.
    Wiederkehr, P.
    Baumann, J.
    König, A.
    Spieker, C.
    Müller, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/100179.pdf
    Data publikacji:
    2017
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    process stability simulation
    thermal analysis
    machine tool
    Opis:
    In mid-scale and large five axis overhead gantry type milling machines, the vertical z-slide (ram) often constitutes one of the most sensitive and critical components regarding stiffness, structural vibrations and thermal influences. During machining, the z-slide is loaded by (quasi-) static process and drive forces, transient acceleration forces, periodic excitations by the tool engagement, as well as by thermal effects resulting from altering ambient conditions, heated chips, cooling lubricant and power losses in drives, guides and bearings. Deflections, thermal deformations and vibrations of the z-slide lead to geometric machining errors and inacceptable surface location errors at the workpieces. Furthermore, instable cutting conditions and regenerative chatter limit applicable material removal rates and, thus, productivity. In this work, a newly developed hybrid material structure for an exemplary z-slide, involving metal parts and mineral cast, is introduced. Structural optimization methods as well as process simulation techniques were applied in order to derive the final design solution. The integration of active cooling circuits for thermal stabilization is investigated and the use of fibre optical strain sensors is analysed with respect to a state monitoring of the machine tool component.
    Źródło:
    Journal of Machine Engineering; 2017, 17, 1; 17-30
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Review of G. Häublein/M. Müller/P. Rusch/T. Scherling/L. Wertenschlag: Memo. Wortschatz- und Fertigkeitstraining zum Zertifikat Deutsch als Fremdsprache. Berlin und München: Langenscheidt, 1995.
    Autorzy:
    Krzysiak, Lucyna
    Powiązania:
    https://bibliotekanauki.pl/articles/605500.pdf
    Data publikacji:
    1995
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Źródło:
    Lublin Studies in Modern Languages and Literature; 1995, 19; 187-189
    0137-4699
    Pojawia się w:
    Lublin Studies in Modern Languages and Literature
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cavity-Polariton Effects in II-VI Microcavities
    Autorzy:
    André, R.
    Boeuf, F.
    Heger, D.
    Dang, Le Si
    Romestain, R.
    Bleuse, J.
    Müller, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2011103.pdf
    Data publikacji:
    1999-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.36.+c
    42.55.Sa
    78.66.-w
    Opis:
    Semiconductor microcavities are monolithic multilayer heterostructures grown by molecular beam epitaxy. They allow the confinement along the growth axis of both photons between the Bragg reflectors and excitons in quantum wells. If the exciton-photon coupling matrix element is large enough compared to the line width, the system is said to be in the strong coupling regime. In that case a quantum well exciton couples to another discrete state: the photon mode of a planar microcavity with the same in-plane wave vector, to give rise to quasi-stationary states named cavity polaritons. In this regime, the Fermi golden rule does not hold any more and the optical properties, linear or nonlinear, are strongly related to polariton features. A review of the optical properties of CdTe-based microcavities operating in the strong coupling regime is given in this paper. The strength of the exciton-photon coupling, dynamic optical properties, and relaxation processes along polariton dispersion curves will be discussed, as well as stimulated emission of cavity polariton luminescence.
    Źródło:
    Acta Physica Polonica A; 1999, 96, 5; 511-524
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Broadband concept of energy harvesting in beam vibrating systems for powering sensors
    Autorzy:
    Rysak, A
    Müller, M.
    Borowiec, M.
    Zubrzycki, J.
    Litak, G.
    Godlewska-Lach, A
    Wittstock, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/957989.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    piezoceramic
    energy harvesting
    vibration
    broadband effect
    impacts
    Opis:
    Recent demand for powering small sensors for wireless health monitoring triggered activities in the field of small size efficient energy harvesting devices. We examine energy harvesting in an aluminium beam with a piezoceramic patch subjected to kinematic harmonic excitation and impacts. Due to a mechanical stopper applied, inducing a hardening effect in the spring characteristic of the beam resonator, we observed a broader frequency range for the fairly large power output. Impact nonlinearities caused sensitivity to initial conditions and appearance of multiple solutions. The occurrence of resonant solution associated with impacts increased efficiency of the energy harvesting process.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 23; 62-67
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lingula dregeri (Brachiopoda) from the Middle Miocene of Hungary
    Autorzy:
    Bitner, M. A.
    Dulai, A.
    Kocsis, L.
    Müller, P. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/191757.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Brachiopoda
    Lingula
    Middle Miocene
    Pannonian Basin
    Hungary
    Opis:
    Lingulide brachiopods, assigned to Lingula dregeri Andreae, 1893, have been identified from the Middle Miocene (Upper Badenian) of the Hungarian part of the Pannonian Basin. Although widely distributed in the Miocene of the Central Paratethys (Austria, Poland, Ukraine, Romania), the genus Lingula was not described previously from Hungary. Outside of the Central Paratethys, L. dregeri also has been recognized in the Atlantic and Mediterranean provinces and most probably in the Eastern Paratethys.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2012, 82, 1; 39--43
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gametogenic cycle in Vertigo pusilla O.F. Muller, 1774 (Gastropoda: pulmonata: Vertiginidae)
    Autorzy:
    Mazurkiewicz, M.
    Pokryszko, B.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84583.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    Gonads of V. pusilla at various growth stages were examined with standard histological methods. The first gonial cells appeared at the stage of 3.3 whorls: few and poorly developed gonad vesicles contained fine mitotically dividing cells and cells in meiotic prophase, with the first growing oocytes in the peripheral parts of the vesicles. At 4-whorl stage the oocytes entered vitellogenesis and increased in volume. In subadult individuals the oocyte volume and the gonad volume increased considerably; besides the advanced vitellogenic oocytes new oocytes appeared, the number of spermatids increased and the first spermatozoa were observed. The gonad of pre-reproductive adults contained numerous late-vitellogenic oocytes, young growing oocytes and many spermatozoa. In post-reproductive individuals there were no mature oocytes, spermatozoa were few, but the presence of young oocytes and mitotically dividing cells indicated resumption of gamete production.
    Źródło:
    Folia Malacologica; 2005, 13, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First record of Corbicula fluminalis (O.F. Muller, 1774) (Bivalvia: corbiculidae) – in Poland
    Autorzy:
    Labecka, A.M.
    Domagala, J.
    Pilecka-Rapacz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/83209.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    A human-modified environment may provide a favourable habitat for acclimation of invasive species. The resulting new niche is often unavailable for the native fauna and, consequently, can be successfully inhabited by alien invaders. This is also due to relatively low competition for food resources and space. New species inhabiting heated waters are being reported increasingly often. Recently, the presence of an Asiatic clam, Corbicula fluminalis (O. F. Müller, 1774), was confirmed in the lower course of the Odra River. This is the second taxon of the genus Corbicula found in Poland, in Western Pomerania, in a heated channel.
    Źródło:
    Folia Malacologica; 2005, 13, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A quasi-nilpotent operator with reflexive commutant, II
    Autorzy:
    Müller, V.
    Zając, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1217318.pdf
    Data publikacji:
    1999
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    quasinilpotent operator
    commutant
    reflexivity
    Opis:
    A new example of a non-zero quasi-nilpotent operator T with reflexive commutant is presented. The norms $|T^n|$ converge to zero arbitrarily fast.
    Źródło:
    Studia Mathematica; 1999, 132, 2; 173-177
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bogate stanowisko smukwy białoplamej Scolia sexmaculata (Müller, 1766) (Hymenoptera: Scoliidae) na Pojezierzu Mazurskim
    Abundant occurrence of Scolia sexmaculata (Müller, 1766) (Hmenoptera: Scoliidae) at the site in the Masurian Lake District
    Autorzy:
    Szymkiewicz, M.
    Szymkiewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2090087.pdf
    Data publikacji:
    2021
    Wydawca:
    Mazowiecko-Świętokrzyskie Towarzystwo Ornitologiczne
    Opis:
    This note reports the abundant occurrence of Hymenoptera species: Scolia sexmaculata documented at the site in the Masurian Lake District (NE Poland). On the lakeside slope of the southern exposure covered with xerothermic vegetation, a swarm of these insects, consisting of ca 50-60 individuals, was found (Photos 1-2).
    Źródło:
    Kulon; 2021, 26; 37-41
    1427-3098
    Pojawia się w:
    Kulon
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Corbicula fluminea (O. F. Müller, 1774) (Bivalvia: corbiculidae) – a species new to the Polish malacofauna
    Autorzy:
    Domagala, J.
    Labecka, A.M.
    Pilecka-Rapacz, M.
    Migdalska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/84175.pdf
    Data publikacji:
    2004
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    Dispersal of the exotic bivalve Corbicula fluminea has been observed in Europe for more than 20 years. In October 2003, the bivalve was for the first time recorded in Poland; its first Polish site is the heated water canal of the Dolna Odra power station in Western Pomerania.
    Źródło:
    Folia Malacologica; 2004, 12, 3
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tentacle regeneration in Planorbarius corneus (Linnaeus, 1758) and Cepaea hortensis (O.F.Muller, 1774) (Gastropoda: Pulmonata)
    Autorzy:
    Jackiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/83235.pdf
    Data publikacji:
    2000
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    Tentacle regeneration in Planorbarius corneus (L.) and Cepaea hortensis (O. F. Müll.) is found to depend on the extent of injury and the season; the regeneration time is longer in the stylommatophoran Cepaea than in the basommatophoran Planorbarius.
    Źródło:
    Folia Malacologica; 2000, 08, 3
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the subgeneric classification of vertigo O.F.Muller, 1774 (Gastropoda: Pulmonata: Vertiginidae)
    Autorzy:
    Pokryszko, B.M.
    Stworzewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/84231.pdf
    Data publikacji:
    2001
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    The following subgeneric names are synonymized: Vertigo s. str. O. F. Müller, 1774 = Isthmia Gray, 1821 = Alaea Jeffreys, 1830 = Angustula Sterki, 1888 syn. n. = Vertillaria Pilsbry, 1919 syn. n. = Ungulidenta Popova et Shileyko, 1981 syn. n.; Vertilla Moquin-Tandon, 1855 = Alloptyx Pilsbry, 1953 syn. n. = Angustella Steklov, 1967 syn. n. Of the two resulting subgenera Vertilla Moquin-Tandon, with the type species V. angustior Jeffreys, includes also V. angulifera O. Boettger, V. oecsensis (Halaváts), V. bicolumellata Steklov and V. hinkleyi Pilsbry; Vertigo s. str., with the type species V. pusilla O. F. Müller, includes all the remaining members of the genus.
    Źródło:
    Folia Malacologica; 2001, 09, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Life cycle of Vallonia costata (O.F. Muller, 1774) (gastropoda, pulmonata, vallonidae) in the laboratory
    Autorzy:
    Kuznik-Kowalska, E.
    Prockov, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84377.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2013, 21, 3
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Redescending M-estimators in regression analysis, cluster analysis and image analysis
    Autorzy:
    Müller, Christine
    Powiązania:
    https://bibliotekanauki.pl/articles/729806.pdf
    Data publikacji:
    2004
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    redescending M-estimator
    regression
    breakdown point
    optimality
    cluster analysis
    image analysis
    kernel estimator
    Opis:
    We give a review on the properties and applications of M-estimators with redescending score function. For regression analysis, some of these redescending M-estimators can attain the maximum breakdown point which is possible in this setup. Moreover, some of them are the solutions of the problem of maximizing the efficiency under bounded influence function when the regression coefficient and the scale parameter are estimated simultaneously. Hence redescending M-estimators satisfy several outlier robustness properties. However, there is a problem in calculating the redescending M-estimators in regression. While in the location-scale case, for example, the Cauchy estimator has only one local extremum this is not the case in regression. In regression there are several local minima reflecting several substructures in the data. This is the reason that the redescending M-estimators can be used to detect substructures in data, i.e. they can be used in cluster analysis. If the starting point of the iteration to calculate the estimator is coming from the substructure then the closest minimum corresponds to this substructure. This property can be used to construct an edge and corner preserving smoother for noisy images so that there are applications in image analysis as well.
    Źródło:
    Discussiones Mathematicae Probability and Statistics; 2004, 24, 1; 59-75
    1509-9423
    Pojawia się w:
    Discussiones Mathematicae Probability and Statistics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal changes in age structure of a population of Bradybaena fruticum (O.F. Muller, 1774)
    Autorzy:
    Kuznik-Kowalska, E.
    Prockow, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/83891.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2010, 18, 3
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stwierdzenie Corbicula fluminea (O. F. Müller, 1774) (Veneroida: Corbiculidae) w Wiśle w Warszawie
    Records of the Asian clam Corbicula fluminea (O. F. Müller, 1774) (Veneroida: Corbiculidae) in the Vistula River in Warsaw
    Autorzy:
    Romanowski, J.
    Winczek, M.
    Ceryngier, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/32879.pdf
    Data publikacji:
    2016
    Wydawca:
    Mazowiecko-Świętokrzyskie Towarzystwo Ornitologiczne
    Opis:
    Two empty shells of the Asian clam Corbicula fluminea were recorded on left bank of Vistula river in Warsaw (52°17’07”N, 20°59’42”E) on 29 June, 2016 (photo 4). Altogether, 19 paired and 76 single empty valves were collected during following surveys of left and right banks of the river and two oxbows within city limits in July and August 2016. A total of 8 live bivalves were collected from the river bed and the oxbow at the depth of about 40 cm. The largest empty shell was 31.6 mm wide and 29.1 mm long. The live specimens measured 9.4-22.5 mm in width and 8.3-25.2 mm in length. The records of the Asian clam Corbicula fluminea in Warsaw document spreading of this invasive species down the Vistula River from the upper part of the river.
    Źródło:
    Kulon; 2016, 21
    1427-3098
    Pojawia się w:
    Kulon
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the axiomatic theory of spectrum II
    Autorzy:
    Mbekhta, M.
    Müller, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1287569.pdf
    Data publikacji:
    1996
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    spectral mapping theorem
    ascent
    descent
    semiregular operators
    quasi-Fredholm operators
    Opis:
    We give a survey of results concerning various classes of bounded linear operators in a Banach space defined by means of kernels and ranges. We show that many of these classes define a spectrum that satisfies the spectral mapping property.
    Źródło:
    Studia Mathematica; 1996, 119, 2; 129-147
    0039-3223
    Pojawia się w:
    Studia Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution of Monacha claustralis (Rossmässler, 1834) and M. cartusiana (O. F. Müller, 1774) (Eupulmonata: Hygromiidae) in central European and Balkan countries: new data
    Autorzy:
    Pienkowska, J.R.
    Prockow, M.
    Gorka, M.
    Lesicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/84770.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2018, 26, 2
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Damage to various plant species by Arion lusitanicus mabille and Arion rufus (O. F. Muller)
    Autorzy:
    Kozlowski, J.
    Jaskulska, M.
    Kaluski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/84224.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2010, 18, 3
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feeding rate of Deroceras reticulatum (O.F. Muller, 1774) (Gastropoda: pulmonata: Agriolimacidae) on herbs and oilseed rape
    Autorzy:
    Kozlowski, J.
    Kozlowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84473.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    Experiments on feeding rate of Deroceras reticulatum (O. F. Müller) and damage caused by this slug to oilseed rape and other plant species were carried out under laboratory conditions. No-choice tests were conducted on 20 plant species at the growth stage of 2–3 leaves. The percentage of plant damage was assessed in consecutive days of the slug feeding and the consumption index (C.I.) was calculated for each plant species and for slugs of known weight. The slug feeding rates varied significantly between the examined plant species. Papaver argemone, Sisymbrium officinale and Erigeron canadensis were the most sensitive to the slug feeding, Geum urbanum, Seneico vulgaris, Epilobium palustre and Impatiens roylei – the least so.
    Źródło:
    Folia Malacologica; 2007, 15, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of induced spring aestivation on antioxidant defence in Helix aspersa O.F.Muller, 1774 (Gastropoda: Pulmonata: Helicidae)
    Autorzy:
    Nowakowska, A.
    Gralikowska, P.
    Rogalska, J.
    Ligaszewski, M.
    Caputa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84506.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    The aim of the present investigation was to check the ability of experimentally farmed Helix aspersa (O. F. Müll.), raised in conditions enabling rapid growth and successful reproduction, to modulate their antioxidant defence system during enforced aestivation. The aestivation induced increase in activity of total and selenium-dependent peroxidase in the kidney and foot but did not evoke increase in activity of catalase, glutathione transferase and concentration of reduced glutathione. Moreover, the aestivation did not induce lipid and protein peroxidation, estimated as concentrations of thiobarbituric acid and carbonyl protein groups, respectively. H. aspersa farmed under favourable or natural conditions are able to modulate their antioxidant defence system in response to oxidative stress following transition from the experimental aestivation to active state.
    Źródło:
    Folia Malacologica; 2014, 22, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detonacja nadziei. O fundamentalnej frakturze opowiadania przemocy w twórczości Heinera Müllera
    Autorzy:
    Raddatz, Frank M.
    Wojtyra, Wiktoria
    Powiązania:
    https://bibliotekanauki.pl/articles/1960568.pdf
    Data publikacji:
    2018
    Wydawca:
    Ośrodek Badawczy Facta Ficta
    Tematy:
    Heiner Müller
    Teatr
    Horyzont przemocy
    HamletMaszyna
    Opis:
    In the paper, Detonation of Hope, translated by Wiktoria Wojtyra, Frank M. Raddatz attempts to explain the origins of Heiner Müller’s late texts, renowned for their non-dialogue characteristics that have become the basis for the post-dramatic theater. However, this basis has been corrupted by the capitulation to violence now deeply integrated onto it. Furthermore, in Hamletmachine, Müller utilized post-utopian aesthetics as a manifestation of the thwarted hope of the end to violence in history. This fundamental structure of his narrative of violence is preceded by the long struggle against violence and the possibility of overcoming or eradicating it entirely. A profound shock ensues from a sensitization stemming from the regulation of violence set against a pandemic. However, this only succeeds until the moment in which the fight against bestiality will give way for a new desire for violence. History, it turns out, becomes a cul-de-sac as represented by the renaissance of the ice-age which marks a farewell to a utopian world free of violence. At the same time fails an alliance of art and politics. The same alliance, that on behalf of The Absolute Other once hammered out the historical expectations horizon.
    Źródło:
    Facta Ficta. Journal of Theory, Narrative & Media; 2018, 1, 1; 178-201
    2719-8278
    Pojawia się w:
    Facta Ficta. Journal of Theory, Narrative & Media
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polen in der europäischen Geschichte, hrsg. Michael G. Müller, Band 3, Die polnisch-litauischen Länder unter der Herrschaft der Teilungsmächte (1772/1795–1914), hrsg. [ed.] Michael G. Müller, Igor Kąkolewski, Karsten Holste, Robert Traba, Anton Hiersemann
    Autorzy:
    Kita, Agnieszka M.
    Kita, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/19984516.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Źródło:
    Studia z Historii Społeczno-Gospodarczej XIX i XX Wieku; 2021, 24; 163-167
    2450-6796
    Pojawia się w:
    Studia z Historii Społeczno-Gospodarczej XIX i XX Wieku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new locality of Monacha cartusiana (O.F.Muller, 1774) (Gastropoda: Pulmonata: Helicidae) in Poland
    Autorzy:
    Cholewa, S.
    Koralewska-Batura, E.
    Batura, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84494.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    Monacha cartusiana (O. F. Müller, 1774) was found in a new site in western Poland. The site is located in the city of Poznań, outside the continuous distribution range of the species. It is probably a result of accidental introduction by man.
    Źródło:
    Folia Malacologica; 2003, 11, 1-2
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Upgrade of the Electroporation Device KEA-MOBIL
    Autorzy:
    Sack, M.
    Attmann, F.
    Stängle, R.
    Wolf, A.
    Frey, W.
    Müller, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807923.pdf
    Data publikacji:
    2009-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.50.cj
    Opis:
    For the production of synthetic bio-fuel the use of green biomass enables additional resources of raw material supplementary to the commonly used dry material. An electroporation assisted drying process gives the opportunity of a more efficient dewatering than only pressing and subsequent drying. Experiments showed a lower relative humidity of the pressed material after electroporation compared to pressing the raw material only. Moreover, the drying process of the electroporated material was much shorter. This is because the pores formed in the cell membranes foster a better extraction of water during pressing and enhance the diffusion process during the drying process. The paper presents exemplarily the experimental results for green rye. For the electroporation-assisted drying process the electric contact to the plant material has to be established by means of the juice inside the plants only rather than adding additional water. Hence, for experiments in larger scale, the existing electroporation device KEA-MOBIL has been equipped with a new combined electroporation reactor and press. The reactor has a plate electrode system, whose upper electrode additionally serves as a piston to apply mechanical force to extract juice for a good electrical contact between plant material and the electrodes. A two-stage Marx generator serves as a pulse source. To reduce the insulation distance to the walls of the shielding cabin the Marx generator is operated in ground symmetric configuration. The device has been designed for a batch-wise throughput of 50 kg/h. An automatic feeding device enables the alternating use of two test vessels. The device has been tested on-site on a farm with green rye and grass.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 6; 1081-1083
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monacha claustralis (Rossmassler, 1834) and Monacha cartusiana (O. F. Muller, 1774) in Poland
    Autorzy:
    Pienkowska, J.R.
    Gorka, M.
    Matuszak, M.
    Bocianowski, P.
    Gwardjan, M.
    Lesicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/83516.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    Monacha claustralis
    Monacha cartusiana
    invasive species
    shell morphology
    locality
    Polska
    Źródło:
    Folia Malacologica; 2016, 24, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The invasion continues - a new locality of Monacha cartusiana (O.F. Muller) (Gastropoda: pulmonata: Helicidae) in the Swietokrzyskie Mts (Central Poland)
    Autorzy:
    Gorka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/83584.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    A new locality of Monacha cartusiana (O. F. Müller) was found in the city of Kielce, Central Poland. The colony of snails is located above the edge of an abandoned quarry. The new site may suggest that M. cartusiana keeps expanding its distribution range in Poland.
    Źródło:
    Folia Malacologica; 2005, 13, 4
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identifying limits of scalability in distributed, heterogeneous, layer based monitoring concepts like SLAte
    Autorzy:
    Hilbrich, M.
    Muller-Pfefferkorn, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/305401.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    distributed
    scalable
    slate
    heterogeneous
    grid
    monitoring
    Opis:
    In this paper we present the concept of a scalable job centric monitoring infrastructure. The overall performance of this distributed, layer based architecture called SLAte can be increased by installing additional servers to adapt to the demands of the monitored resources and users. Another important aspect is to offer a uniform global view on all data which are stored distributed to provide an easy access for users or visualisation tools. Additionally we discus the impact of these uniform access layer on scalability.
    Źródło:
    Computer Science; 2012, 13 (3); 23-33
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New data on the distribution and molecular diagnostics of Monacha claustralis (Rossmässler, 1834) and M. cartusiana (O. F. Müller, 1774) (Gastropoda: Eupulmonata: Hygromiidae) in Poland, Bosnia and Serbia
    Autorzy:
    Pienkowska, J.R.
    Gorka, M.
    Matuszak, M.
    Bocianowski, P.
    Gwardjan, M.
    Lesicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/84443.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2016, 24, 4
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Damage to the legume (Fabaceae) and rapeseed (Brassicaceae) plants caused by Arion vulgaris Moquin-Tandon, 1855, A. rufus (Linnaeus, 1758) and Deroceras reticulatum (O. F. Müller, 1774)
    Autorzy:
    Kozlowski, J.
    Jaskulska, M.
    Kozlowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84048.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2018, 26, 4
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Populations of Cepaea Hortensis (O. F. Muller, 1774) polymorphic for the colour of shell lip in north-western Poland and north-central Germany
    Autorzy:
    Ozgo, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84682.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    In Cepaea hortensis (O. F. Müller), the shell lip (peristome) is usually white. In most areas the lip colour allows us to reliably distinguish this species from C. nemoralis (Linnaeus) in which the lip is usually dark brown. Populations polymorphic for lip colour are rare and occur only locally. Here I report on populations of C. hortensis containing dark-lipped individuals in north-western Poland and in north-central Germany. The frequency of dark-lipped individuals ranged from 3% to 31%. It was common in brown and pink shells, but occurred only sporadically in yellow shells. No selective factors promoting dark-lipped C. hortensis are evident. The occurrence of this phenotype is likely to reflect random events.
    Źródło:
    Folia Malacologica; 2010, 18, 2
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Stray Field Detection as Guidance for Electronic Transport Measurements in the B-T Phase Diagram of MnSi
    Autorzy:
    Pohlit, M.
    Witt, S.
    Akbari, M.
    Krellner, C.
    Müller, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030531.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.55.Ge
    72.15.Eb
    72.80.Ga
    75.30.-m
    Opis:
    In order to advance modern information technologies, progress in both the fabrication of magnetic nanostructures and of complex materials, from which small magnetic entities - like the skyrmions present in MnSi - emerge and in developing measurement techniques are desired. Here the sensor-based stray field detection using tailor-made micro-Hall magnetometers has proven to be a versatile tool for studying the magnetization reversal of individual magnetic nanostructures, domain wall motion in thin films, as well as the local stray field close to macroscopic samples. In this article we demonstrate that the local stray field can be used to accurately map out the B-T phase diagram of MnSi and serve as a guidance for simultaneously-performed electronic transport measurements. The presented study also serves as a proof-of-principle experiment for future combined investigations of electronic transport and magnetization focusing on electrically-contacted magnetic nanostructures.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 582-584
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Textures in Thin Ion-Irradiated Ni and Fe Films
    Autorzy:
    Lieb, K. P.
    Zhang, Kun
    Müller, G. A.
    Schaaf, P.
    Uhrmacher, M.
    Felsch, W.
    Münzenberg, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2028981.pdf
    Data publikacji:
    2001-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.Gw
    75.50.Bb
    75.70.Ak
    Opis:
    Heavy-ion bombardment of thin ferromagnetic, polycrystalline films can induce substantial changes of their magnetic and microstructural properties. Since we first identified this effect in 50-150 nm thick Fe and Ni films irradiated with Xe-ions, we made a systematic search for the influence of various film and implantation parameters on the orientation and degree of the magnetic anisotropy and how these parameters correlate with the microstructure of the films. Several analyzing methods, such as Rutherford backscattering, magneto-optical Kerr effect, X-ray diffraction, magnetic force microscopy, $\text{}^{111}$In perturbed angular correlation, and conversion electron Mössbauer spectroscopy, were employed in the investigation.
    Źródło:
    Acta Physica Polonica A; 2001, 100, 5; 751-760
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dielectric Properties and Electron Spectrum of the Müller Model in the High-Temperature Superconductivity Theory
    Autorzy:
    Stasyuk, I. V.
    Shvaika, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1929563.pdf
    Data publikacji:
    1993-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.65.+n
    71.45.Gm
    Opis:
    The paper is devoted to the investigation of the single-electron excitation spectrum, effective exchange interaction and dielectric susceptibility of the Muller model for high-temperature superconductivity. It is shown that the interaction with the anharmonic vibration mode leads to the additional splitting of the electron bands and their narrowing. The sign of the effective exchange interaction between electrons depends on the local state of the vibration subsystem. The electron and pseudospin (lattice) contributions to the transverse dielectric susceptibility are investigated.
    Źródło:
    Acta Physica Polonica A; 1993, 84, 2; 293-313
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Probing 3d-4f Exchange Interactions by High-Field Magnetization Measurements
    Autorzy:
    Skourski, Y.
    Kuz'min, M.
    Skokov, K.
    Müller, K.
    Wosnitza, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810420.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.Et
    75.30.Kz
    Opis:
    In a 4f-3d ferrimagnet the molecular field (a net value expressing the relevant exchange interactions) can be determined from high-field magnetization measurements. If the applied field is high enough, it breaks the ferrimagnetic ground state and drives the system towards ferromagnetic order via non-collinear intermediate phases. Magnetization curves of $Er_2Fe_{17}$ singe crystal were measured along the [100] crystallographic direction in magnetic fields up to 50 T. An unfixed sample, free to rotate, was measured as well. The magnetization measured along the easy magnetization direction shows jumps at 37.5 and 44 T. The first jump was used for the determination of the molecular field (66.4 T). This agrees with the data for the unfixed sample where a kink in the magnetization at 33.5 T yields a molecular field of 65.7 T. The obtained values are in a good agreement with literature data.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 178-180
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Damage to potato tubers by Arion vulgaris Moquin-Tandon, 1885, Arion rufus (Linnaeus, 1758) and Deroceras reticulatum (O. F. Muller, 1774)
    Autorzy:
    Kozlowski, J.
    Jaskulska, M.
    Kozlowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84118.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    damage
    potato tuber
    Arion vulgaris
    Arion rufus
    Deroceras reticulatum
    slug
    potato plant
    plant protection
    Źródło:
    Folia Malacologica; 2016, 24, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of physico-chemical conditions on the shape of growth curves of Anodonta anatina (Linnaeus, 1758)
    Autorzy:
    Czarnoleski, M.
    Dragosz-Kluska, D.
    Labecka, A.M.
    Muller, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/83865.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    physicochemical condition
    shape
    growth curve
    Anodonta anatina
    life strategy
    biotic factor
    abiotic factor
    female
    male
    lake
    Źródło:
    Folia Malacologica; 2012, 20, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rodzinne zakażenia Trichomonas tenax [O.F.Muller, 1773] Dobel, 1939
    Autorzy:
    Kurnatowska, A. J.
    Dudko, A.
    Turkowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2146423.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    Trichomonas tenax
    choroby czlowieka
    zakazenia
    rzesistek policzkowy
    parazytologia
    jama ustna
    choroby jamy ustnej
    rodziny
    pasozyty czlowieka
    Opis:
    Familial infections with Trichomonas tenax (O.F. Müller, 1773), Dobel, 1939. Aim of the study was to research familial occurrence of Trichomonas tenax and relationship between infection with the protozoan and both a state of parodontium and hygiene of oral cavity. The study involved 10 families (22 individuals). Trichomonas tenax was found in 16 patients. Simultaneously izolates of protozoans were examined with the methods of molecular biology. The study showed the dependence of infection with Trichomonas tenax on both bad hygiene of oral cavity and occurrence of pathological lesions in the paradontium.
    Źródło:
    Wiadomości Parazytologiczne; 2004, 50, 1; 35-40
    0043-5163
    Pojawia się w:
    Wiadomości Parazytologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of damage to seeds and seedlings of different winter wheat cultivars caused by Deroceras reticulatum (O.F. Muller, 1774) and Arion lusitanicus Mabille, 1868 in laboratory conditions
    Autorzy:
    Kaluski, T.
    Kozlowski, J.
    Kozlowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/84114.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Opis:
    Susceptibility of 18 winter wheat (Triticum aestivum L.) cultivars to damage by Deroceras reticulatum (O. F. Müll.) and Arion lusitanicus Mabille was estimated in laboratory conditions. For each slug species six experiments, two with seeds, two with seedlings at stage 07–12 BBCH and two with seedlings at stage 10–13 BBCH, were performed. The susceptibility to feeding of the two slug species differed between the cultivars; the two slugs differed in their preferences to some of the cultivars. The Nadobna cultivar was the most severely damaged by both species. The cultivars Jawa and Nutka were the least damaged by D. reticulatum and A. lusitanicus, respectively.
    Źródło:
    Folia Malacologica; 2005, 13, 4
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron Transport and Point Contact Spectroscopy of Cubic DyCu$\text{}_{5}$
    Autorzy:
    Nenkov, K.
    Idzikowski, B.
    Ilkovic, S.
    Kačmarčiková, E.
    Reiffers, M.
    Müller, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2013688.pdf
    Data publikacji:
    2000-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.20.Eh
    72.15.Eb
    73.23.Ad
    73.40.Jn
    Opis:
    The electron transport properties and point contact spectra of melt-spun DyCu$\text{}_{5}$ with the cubic phase (structure type AuBe$\text{}_{5}$, space group $F\overline{4}3m$) were investigated. It was found by ac-susceptibility measurements that below a transition temperature T$\text{}_{m}$=6.5 K this phase shows metamagnetism. Between T$\text{}_{m}$ and T$\text{}_{C}$=14.5 K a spontaneous magnetization is found. Our measurements of electrical resistivity confirm the existence of two magnetic phase transitions in the compound. Furthermore, we present point contact spectra of DyCu$\text{}_{5}$-Cu heterocontacts which are directly proportional to the electron-quasiparticle interaction function. Apart from a peak at about 18 meV, which is characteristic of electron-phonon interaction in pure Cu, we observed a series of additional maxima at lower energy, which are connected with the allowed 4f-transitions from the ground state to excited crystalline electric field levels.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 5; 843-846
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in the activity of glucose-6-phosphatase in tissues of Helix aspera (O.F.Muller) acclimated at 5 degrees of Celcjusz and 25 degrees of Clelcjusz
    Autorzy:
    Dziewulska-Szwajkowska, D.
    Lozinska-Gabska, M.
    Dzugaj, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/84330.pdf
    Data publikacji:
    2001
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2001, 09, 2
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Soccer in the Media, Public Mood and Government Popularity
    Autorzy:
    Hagen, Lutz M.
    Zeh, Reimar
    Müller-Klier, Maike
    Powiązania:
    https://bibliotekanauki.pl/articles/643225.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    media coverage, public mood, media influence, soccer, sports coverage, political discourse, election campaign, national identity, media content, emotions
    Opis:
    This paper examines the relationship between the media coverage of soccer and political popularity of certain parties during election campaigns which usually followed the world soccer games. The national team’s success on the pitch is related to victory in the political match. This surprising link between the national success in sports and the success in an election for a party or a candidate is explained in the light of Public Mood Theory, founded by W. Rahn, who pointed out that emotions play an important role in political behaviour and national identity, which, in turn, is influenced by the media content, like sports coverage among others. The creation of national identity is mostly built on the national success in sports. Especially in Germany, where soccer is number one sport in media coverage. Sports matches produce winners and losers, thus strongly influencing Public Mood, which is relevant for the formation of political evaluations and judgments, in a democracy shaped by emotions. Sports can shape Public Mood only if they are reported in the media. The analysis of the relationship between interest in soccer and political popularity, presented in the paper, shows how the media coverage of soccer influenced the German political attitudes in 2002, to an extent that it might have been decisive for the election.
    Źródło:
    Zeszyty Prasoznawcze; 2013, 56, 1
    0555-0025
    2084-3836
    Pojawia się w:
    Zeszyty Prasoznawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electroluminescence Investigation of the Lateral Field Distribution in AlGaN/GaN HEMTs for Power Applications
    Autorzy:
    Baeumler, M.
    Polyakov, V.
    Gütle, F.
    Dammann, M.
    Benkhelifa, F.
    Waltereit, P.
    Reiner, R.
    Müller, S.
    Wespel, M.
    Quay, R.
    Mikulla, M.
    Wagner, J.
    Ambacher, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1197910.pdf
    Data publikacji:
    2014-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.60.Fi
    85.30.De
    85.30.Tv
    85.40.Bh
    85.40.Qx
    73.40.-c
    73.90.+f
    73.61.Ey
    73.50.Mx
    Opis:
    The lifetime and stability of AlGaN/GaN heterostructure field effect transistors at high power levels can be enhanced by introducing field plates to reduce electric field peaks in the gate-drain region. Simulations of the electric field distribution along the channel using the 2D ATLAS software from Silvaco indicate that above a characteristic drain source voltage three spatially separated electric field peaks appear, one located at the drain-side edge of the gate foot, one at the end of the drain-sided gate field plate, and one at the end of the source shield field plate. The close correlation between lateral electric field and the electroluminescence due to hot electron related intra-band transitions can be very helpful when optimizing the electric field distribution in high power devices. Electroluminescence microscopy images of devices with gate and source shield field plate reveal the peaks located at the locations of enhanced electric field. By studying the voltage dependence of the electroluminescence peaks the influence of the field plates on the electric field distribution in source drain direction can be visualized.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 4; 982-985
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taxonomic status of Stagnicola palustris (O. F. Muller, 1774) and S. turricula (Held, 1836) (Gastropoda: Pulmonata: Lymnaeidae) in view of new molecular and chorological data
    Autorzy:
    Pienkowska, J.R.
    Rybka, E.
    Banasiak, J.
    Wesolowska, M.
    Lesicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/83290.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Źródło:
    Folia Malacologica; 2015, 23, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new glimpse on trophic interactions of 100-million-year old lacewing larvae
    Autorzy:
    Hornig, M.K.
    Kiesmuller, C.
    Muller, P.
    Haug, C.
    Haug, J.T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082238.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Neuroptera
    Nymphidae
    food-web reconstruction
    Burmese amber
    larvae
    syninclusions
    Cretaceous
    Myanmar
    Opis:
    Larvae of lacewings (Neuroptera) are known to be fierce predators. According to the morphology of fossil forms this seems to have been the case already in the Early Cretaceous. While being predators, lacewing larvae are also food items for other organisms. Here we report two pieces of amber from Myanmar providing instances of such cases. In one amber piece several isolated stylets of lacewing larvae are preserved closely associated together. The most likely interpretation is that a predator preying on lacewing larvae has regurgitated or defecated these non-digestible pieces, yet the identity of the predator remains unclear. The other amber piece preserves a larva resembling modern day larvae of split-footed lacewings (Nymphidae). The larva has projections on its trunk, allowing it to wear a camouflaging cloak. In the head region, a mite (Acari) is attached to the larva; more precisely, the entire anterior body region of the mite is apparently inserted into the lacewing larva. The mite is smaller than the larva. It is known from the modern fauna that stage 1 larvae of Ascalaphidae can be attacked also by rather small predators, such as ants. The mite can therefore well be interpreted as a true predator instead of a parasite, especially considering the unusual mode of attachment. We briefly review interactions of lacewing larvae with other organisms represented in amber from Myanmar and add two new pieces to the puzzle of reconstructing the trophic interactions in the 100-million-year old amber forest.
    Źródło:
    Acta Palaeontologica Polonica; 2020, 65, 4; 777-786
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical simulation of the influence of a fillet and a bulb on the secondary flow in a compressor cascade
    Autorzy:
    Hoeger, M.
    Schmidt-Eisenlohr, U.
    Gomez, S.
    Sauer, H.
    Müller, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1986762.pdf
    Data publikacji:
    2002
    Wydawca:
    Politechnika Gdańska
    Tematy:
    secondary flow
    compressor cascade
    fillet
    bulb
    Opis:
    Large fillet radii are typically found on highly loaded compressor rotors to ensure structural integrity. The objective of this paper is to investigate the impact of such real geometry effects on the flow at the hub section. Investigations were performed numerically for the idealised case of a plane compressor cascade with the 3D Navier-Stokes code TRACE_S. Realistic inlet boundary layer displacement thickness and typical loading levels close to stall are considered at low inlet Mach numbers Ma1 = 0.23. A large fillet with a relative radius of 16% chord length is considered as well as a 3D leading edge bulb-configuration designed at TU Dresden. The results are discussed in terms of iso-Mach surfaces, secondary flow patterns and spanwise incidence and turning. A complex 3D vortex system rises from the fillet radius, which improves the aerodynamic behaviour of the cascade at the end-wall section. With the bulb configuration the suction surface horse-shoe vortex leg was demonstrated to weaken the undesirable cross flow and by that to reduce the hazard of corner stall.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 1; 25-37
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of plant damages and intensity of Deroceras reticulatum [Muller] occurrence in winter oilseed rape and winter wheat
    Autorzy:
    Kozlowski, J.
    Kozlowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/66321.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    oil seed
    oilseed rape
    wheat
    field slug
    plant damage
    harmfulness
    winter wheat
    Deroceras reticulatum
    Źródło:
    Journal of Plant Protection Research; 2002, 42, 3
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards Attosecond Pulses with High Harmonics
    Autorzy:
    Agostini, P.
    Paul, P. M.
    Breger, P.
    Toma, E. S.
    Muller, H. G.
    Mullot, G.
    Augé, F.
    Balcou, Ph.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030463.pdf
    Data publikacji:
    2002-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Re
    42.65.Ky
    32.80.Rm
    33.60.Cv
    Opis:
    The high harmonics produced by focusing an intense femtosecond laser in a gas are theoretically shown to be locked in phase. The physics of this locking is discussed and a new method based on quantum interference in two-photon, two-color ionization allowing to retrieve the relative phase of harmonic pairs is described. The main result is that the 5 harmonics of orders 11-19 produced in argon generate a train of subfemtosecond pulses with a period of 1.35 fs and a duration of 250 attoseconds.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 3; 313-324
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flexible coupling of drive and guide elements for parallel-driven feed axes to increase dynamics and accuracy of motion
    Autorzy:
    Peukert, C.
    Merx, M.
    Müller, J.
    Ihlenfeldt, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/99992.pdf
    Data publikacji:
    2017
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    compliant mechanism
    parallel-driven feed axis
    machine tool
    control bandwidth
    Opis:
    Productivity enhancement is achievable by increasing the dynamics of machines. This can be accomplished by decreasing the moving mass or by increasing the driving forces. One possibility for increasing the drive forces lies in the use of multiple parallel-acting actuators. Because of the mechanical coupling between the drives, undesirable interference of the actuators occurs. This limits the control bandwidth of the feed axis. Feed axes of machine tools are mostly equipped with linear guides fitted with rolling elements. Since they dispose of just one degree of freedom, small errors in their alignment or thermally induced errors cause constraining loads. In this paper compliant mechanisms are used to mechanically decouple the slide from the guide and drive elements. The application of flexible joints in gantry axes with linear motors and ball screws is investigated. The dynamic behaviour of the feed axis components are modelled using the Finite Element Method. By applying the modal reduction technique, the dynamic behaviour is included in an elastic multibody simulation. With the mechanical decoupling of the drive and guide elements it is possible to increase the control bandwidth of the system. Deviations in motion may also be corrected with parallel-driven feed axis by applying compliant mechanisms.
    Źródło:
    Journal of Machine Engineering; 2017, 17, 2; 77-89
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improving maritime traffic safety by applying routes exchange and automatic relevant radar data exchange
    Autorzy:
    Salous, M.
    Müller, H.
    Bolles, A.
    Hahn, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/135291.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    e-navigation strategy
    maritime traffic
    automated data exchange
    Human Machine Interfaces
    navigation systems
    potential collisions
    Opis:
    The e-navigation strategy of the International Maritime Organization (IMO) aims to improve the safety of maritime traffic by increasing cooperation between several maritime stakeholders. The COSINUS (Bolles et al., 2014) project contributes to such a strategy by enabling an automated data exchange (observations, routes and maneuver plans) between ship-side and shore-side navigational systems, developing useful sensor fusion applications upon the new information available from data exchange and introducing new Human Machine Interfaces (HMIs) to support the users of navigation systems. The project shows potential for improvement in maritime traffic safety by ensuring continuous awareness to all participants involved through sensor fusion applications, i.e. by providing all participants (mobile and stationary navigation systems) with a complete view at all times. These applications include detection of critical situations like radar shadowing areas, early and accurate prediction of potential collisions or closest point of approach (CPA) based on the exchanged routes, and improving the accuracy of radars by ensuring high quality data for obstructed or far away routes. The new HMI concepts introduced within the COSINUS project aim at highlighting critical maritime traffic situations. Thus, the users of such navigation systems supported with COSINUS facilities can easily detect such critical situations and react efficiently to avoid collisions, possible crowded areas and inefficient routes.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 90-98
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of temperature and humidity on the grazing activity of Deroceras reticulatum (O. F. Muller, 1774) and the damage to rape plants
    Autorzy:
    Kozlowski, J.
    Jaskulska, M.
    Kaluski, T.
    Kozlowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/83902.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    temperature effect
    humidity
    grazing activity
    Deroceras reticulatum
    damage
    rape plant
    winter rape
    slug
    yield loss
    environmental factor
    air temperature
    Opis:
    Winter rape is susceptible to damage caused by D. reticulatum (O. F. Müller) mainly in the early phases of the plants’ development. The degree of damage and the size of yield losses depend on the slug population and the grazing activity, which are governed by many environmental factors. Laboratory studies were performed to analyse the rate and amount of damage to rape plants (2–3 leaf stage) caused by D. reticulatum, and the effect of temperature and soil humidity on the slug’s grazing activity. With increasing air temperature (up to 16°C) the amount of damage increased, but the effect was not lasting. The slugs were also active at low temperatures (+1°C), and although their grazing was less intense, the amount of damage after seven days could reach an average of 34%. In laboratory tests, the soil humidity had no marked effect on the amount of damage done by the slugs.
    Źródło:
    Folia Malacologica; 2011, 19, 4
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The stem crustacean Oelandocaris oelandica re-visited
    Autorzy:
    Stein, M
    Waloszek, D.
    Maas, A.
    Haug, J.T.
    Muller, K.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/22166.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    morphology
    stem lineage
    Crustacea
    paleontology
    arthropod
    computer-aided 3D modelling
    Middle Cambrian
    phylogenesis
    evolution
    Arthropoda
    Oelandocaris oelandica
    life habitat
    Opis:
    The arthropod Oelandocaris oelandica from the upper Middle Cambrian “Orsten” of Sweden was recently recognized as a member of the early phase of crustacean evolution based on additional morphological detail from new specimens. Here we present a detailed investigation of all available material. It includes the description of a 400 μm long specimen probably representing an early developmental stage. Variation in size correlated with variation of trunk−segment numbers allowed recognition of different instars. The largest specimens do not exceed an estimated length of about 1 mm, indicating that our material may consist only of immature specimens. The characteristic, extremely long antennula of O. oelandica branches into three long rods. It may have served as the major structure to sweep in food, aided by the two subsequent appendages. These and the more posterior limbs were also responsible for locomotion. Minute pores on the outer edges of the posterior limbs and on the trunk tergites possibly contained sensilla originally, which may have served as water−current detectors. The presence of a minute proximal endite only on the third head appendage suggests a rather basal position of this species within Crustacea, because comparable developmental stages of other known stem crustaceans have such an endite on more of their appendages. Reconstruction of O. oelandica and its life attitudes (referred to the largest instar known) benefited from the application of 3D modelling. These helped, e.g., in identifying the combination of the plesiomorphic feeding function of the antennulae and the specialisation of the exopods of the next two appendages as a step toward the development of a sweep−net mode of feeding, one of the key novelties in the evolution of Crustacea. Such a mode of feeding coupled with locomotion of the three anterior appendages is still practiced in the naupliar and metanaupliar phases of many extant eucrustaceans, and even some adults.
    Źródło:
    Acta Palaeontologica Polonica; 2008, 53, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The first ornithosuchid from Brazil and its macroevolutionary and phylogenetic implications for Late Triassic faunas in Gondwana
    Autorzy:
    Muller, R.T.
    Belen von Baczko, M.
    Desojo, J.B.
    Nesbitt, S.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082135.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Archosauria
    Pseudosuchia
    Ornithosuchidae
    biogeography
    phylogeny
    Carnian
    Santa Maria Formation
    South America
    Opis:
    Ornithosuchidae is one of the most enigmatic clades of Triassic pseudosuchians. The group is composed by three carnivorous species that were excavated from Upper Triassic beds of Scotland and Argentina. We describe the first ornithosuchid from the Upper Triassic sediments of Brazil and explore its phylogenetic affinities and implications for the evolution of the group. Dynamosuchus collisensis gen. et sp. nov. was found as the sister taxon of the Argentinean form Venaticosuchus rusconii. These relationships reject a potential endemic radiation of ornithosuchids from the Ischigualasto-Villa Unión Basin and would better support multiple diversification events. Our findings with ornithosuchids is consistent with the pattern reported for proterochampsid and erpetosuchid archosauriforms from Ischigualasto-Villa Unión and the Paraná basins. In addition, the presence of an ornithosuchid in the Late Triassic of Brazil suggests that ornithosuchids were more widespread than previously thought in the southern hemisphere. The new ornithosuchid further demonstrates a faunistic link between the Argentinean and Brazilian basins during the Carnian. Finally, the discovery of the new species provides the first clue of a putative necrophagous vertebrate from the oldest dinosaur-bearing beds and expands our knowledge regarding the trophic structure of the Late Triassic of Brazil.
    Źródło:
    Acta Palaeontologica Polonica; 2020, 65, 1; 1-10
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dissecting the action of H2O2 after its metabolic formation in chloroplasts
    Autorzy:
    Jaspert, N.
    Balazadeh, S.
    Arif, M.
    Muller-Rober, B.
    Maurino, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/80107.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    reactive oxygen species
    toxic cellular metabolite
    signalling molecule
    Arabidopsis thaliana
    glycolate
    chloroplast
    real-time polymerase chain reaction
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of magnetic field on farmed populations of Helix aspersa O. F. Muller, 1774
    Autorzy:
    Ligaszewski, M.
    Lysak, A.
    Janas, P.
    Mach-Paluszkiewicz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/83555.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    magnetic field
    farmed population
    Helix aspersa
    Helix aspersa aspersa
    Helix aspersa maxima
    electromagnetic field
    life cycle
    snail
    farming
    Opis:
    In order to assess the effect of alternating electromagnetic and direct magnetic field on adult Helix aspersa O. F. Müller and their eggs, adults and eggs of H. aspersa maxima Taylor and H. aspersa aspersa O. F. Müller were exposed to such fields with different parameters, and the following life cycle traits were observed: condition of hibernating adults, their survival rate during hibernation and reproduction, egg mass, hatching success, growth rate of hatchlings and body mass of next generation adults. Adults were exposed to sinusoidal, alternating electromagnetic fields of 50 Hz, 100 Hz and 200 μT, and magnetic induction of 50 Hz, as well as a field of 175 μT and 10–1000 Hz (repetition period 80 minutes). Egg batches were exposed to direct magnetic fields of magnetic induction 5 μT and 10 μT and alternating electromagnetic fields of analogous induction and frequency of 50 Hz. The effects varied depending on the parameters of the fields, subspecies and life cycle stage. Adult H. aspersa maxima was more sensitive to the changes in characteristics of electromagnetic field than H. aspersa aspersa, but the two subspecies showed a similar reaction to exposing their eggs to direct or alternating magnetic field. Probably direct field had a greater selection effect compared to alternating field, removing weaker genotypes at embryonic stage; this resulted in a greater mean body mass of the next generation adults. The results are preliminary; further studies, with further modifications of parameters of the fields applied are necessary.
    Źródło:
    Folia Malacologica; 2011, 19, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jurassic and Cretaceous primitive crabs of the family Prosopidae (Decapoda: Brachyura) - their taxonomy, ecology and biogeography
    Jurajskie i kredowe prymitywne kraby z rodziny Prosopidae (Decapoda: Brachyura) - ich taksonomia, ekologia i biogeografia
    Autorzy:
    Müller, P.
    Krobicki, M.
    Wehner, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/191260.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Decapoda
    family Prosopidae
    Jurassic
    Cretaceous
    taxonomy
    palaeoecology
    palaeobiogeography
    Opis:
    The Prosopidae is an extinct family, consisting mostly of Mesozoic species. Most probably it accommodates the ancestors of all brachyurans in the large sense. The family appeared in the Late Pliensbachian and disappeared at the Early Palaeocene. Evolution of the Prosopidae, and therefore, brachyuran evolution started on Middle Jurassic, shallow, soft bottom marine environments. The world-wide Callovian transgression made possible the formation of bioherms and reefs in the Late Jurassic, creating ecological niches for the rapidly differentiating prosopids. These crabs migrated rapidly all over Europe in the Oxfordian and began to flourish and massively occupied sponge megafacies from Portugal to Poland. In the Kimmeridgian, the area of known prosopids shrank, which has probably been connected with decreasing of the reef facies. In turn, a Tithonian regression in the per-Tethyan area resulted in changes of habitats and in colonisation of the coral reefs. When reef facies retreated at the Jurassic-Cretaceous boundary, the favourable conditions for crab development also vanished, so the known Cretaceous prosopids are rare and spatially dispersed. In Tertiary, the closely related descendants of them, homolodromiids, inhabited preferably soft muddy bottoms in deeper, colder waters.
    Kraby z rodziny Prosopidae, reprezentowane są prawie wyłącznie przez gatunki mezozoiczne. Z filogenetycznego punktu widzenia, są one prawdopodobnie przodkami wszystkich pozostałych gatunków krabów. Przedstawiciele tej rodziny znani są od późnego pliensbachu do wczesnego paleocenu. Ewolucja prosopidów, a poprzez to ewolucja pozostałych krabów, rozpoczęła sią w środkowojurajskich, płytkich środowiskach morskich o miękkim charakterze dna. Ogólnoświatowa transgresja kelowejska stworzyła dogodne warunki do powstania różnorodnych bioherm i raf w późnej jurze, które stanowiły nisze ekologiczne dla szybko różnicujących się dzięki temu krabów z rodziny Prosopidae. Kraby te migrowały gwałtownie na całą Europę w oksfordzie, masowo zasiedlając megafację gąbkową i są obecnie znajdowane w utworach tej facji od Portugalii do Polski. W kimerydzie obszar występowania prosopidów wyraźnie się skurczył, co było prawdopodobnie związane ze stopniowym zanikiem tej facji. Z kolei w tytonie regresja w obszarach perytetydzkich spowodowała zmianę środowiska życia krabów i kolonizację przez nie raf koralowych. Dogodne warunki dla rozwoju tych krabów gwałtownie się pogorszyły blisko granicy jury i kredy (zanikanie facji rafowych) skutkiem czego kredowe prosopidy są rzadkie i geograficznie rozproszone. W trzeciorzędzie najbliżsi potomkowie rodziny Prosopidae - kopalni przedstawiciele rodziny Homolodromiidae - zasiedlili środowiska miękkich den głębszych i zimniejszych mórz.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2000, 70, 1; 49-79
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zabezpieczenie transformatorów olejowych przed wybuchem: eksperymenty i symulacje
    Protection of oil-filled transformers against explosion: experiments and simulations
    Autorzy:
    Landis, B.
    Muller, S.
    Perigaud, G.
    Petrovan-Boiarciuc, M.
    Ahmed, O. K.
    Yoon, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/153693.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    transformatory energetyczne
    eksplozja
    łuk elektryczny
    eksperymenty
    symulacje
    power transformers
    explosion
    electrical arc
    experiments
    simulations
    Opis:
    Eksplozje transformatorów olejowych są powodowane przez łuk elektryczy. W przeciągu milisekund łuk doprowadza do odparowania otaczającego go oleju a wygenerowany gaz znajduje się pod ciśnieniem ponieważ inercja oleju zapobiega jego ekspansji. To doprowadza do niebezpiecznych eksplozji, kosztownych awarii i ewentualnego zanieczyszczenia środowiska. Podczas gdy mury ochronne otaczające transformator mogą zahamować eksplozje a tryskacze zagasić wywołany pożar niniejszy dokument przedstawia strategię, która zapobiega eksplozji kadzi transformatora.
    Oil-filled transformer explosions are caused by electrical arc occurring in transformer tanks. Within milliseconds, arc vaporizes the surrounding oil and the generated gas is pressurized as the liquid inertia prevents its expansion. The pressure difference between the gas bubble and the surrounding oil generates pressure waves, which propagate and interact with the tank. The reflections of the pressure waves build up the static pressure, which rises and leads to the tank rupture since tanks are not designed to withstand such levels of static pressure. This results in dangerous explosions, expensive damages and possible environmental pollution. The current paper presents a strategy to prevent the transformer tank rupture. Once an electrical fault occurs, the fast depressurization of the tank is induced by quick oil evacuation to a reservoir in order to prevent the tank explosion. To evaluate the efficiency of this strategy, experiments and computer simulations are used. The experiments were performed on large scale transformers equipped with the protection. They confirmed that the protection prevents the explosion. Besides, simulations of the consequences of an electrical arc occurring in a 200 MVA transformer geometry were run and again, they confirmed that the static pressure increase can be prevented by a quick oil evacuation triggered by the first dynamic pressure peak generated by the electrical arc.
    Źródło:
    Pomiary Automatyka Kontrola; 2013, R. 59, nr 2, 2; 176-182
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charge Carrier Dynamics in $Ga_{1-x}Mn_{x}As$ Studied by Resistance Noise Spectroscopy
    Autorzy:
    Lonsky, M.
    Teschabai-Oglu, J.
    Pierz, K.
    Sievers, S.
    Schumacher, H.
    Yuan, Y.
    Böttger, R.
    Zhou, S.
    Müller, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1397018.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Pp
    73.50.Td
    73.50.-h
    73.61.-r
    64.60.ah
    61.72.-y
    Opis:
    We report on electronic transport measurements of the magnetic semiconductor Ga_{1-x}Mn_{x}As, whereby the defect landscape in various metallic thin films (x=6%) was tuned by He-ion irradiation. Changes in the distribution of activation energies, which strongly determine the low-frequency 1/f-type resistance noise characteristics, were observed after irradiation and can be explained by deep-level traps residing in the As sublattice. Various other kinds of crystalline defects such as, for instance, Mn interstitials, which possibly form nanoscale magnetic clusters with a fluctuating spin orientation, also contribute to the 1/f noise and can give rise to random telegraph signals, which were observed in films with x=7%. In addition, we neither find evidence for a magnetic polaron percolation nor any features in the noise near the Curie temperature.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 520-522
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Real-time human in the loop MBS simulation in the Fraunhofer robot-based driving simulator
    Symulacja w czasie rzeczywistym układu wieloczłonowego z człowiekiem w pętli w opartym na robocie symulatorze kierowania pojazdem opracowanym w Instytucie Fraunhofera
    Autorzy:
    Kleer, M
    Gizatullin, A
    Dreßler, K.
    Müller, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/139514.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    driving simulator
    human in the loop
    real-time MBS simulation
    symulator jazdy
    MBS
    czas rzeczywisty
    Opis:
    The paper encompasses the overview of hardware architecture and the systems characteristics of the Fraunhofer driving simulator. First, the requirements of the real-time model and the real-time calculation hardware are defined and discussed in detail. Aspects like transport delay and the parallel computation of complex real-time models are presented. In addition, the interfacing of the models with the simulator system is shown. Two simulator driving tests, including a fully interactive rough terrain driving with a wheeled excavator and a test drive with a passenger car, are set to demonstrate system characteristics. Furthermore, the simulator characteristics of practical significance, such as simulator response time delay, simulator acceleration signal bandwidth obtained from artificial excitation and from the simulator driving test, will be presented and discussed.
    Artykuł zawiera przeglĄd architektury sprzętowej i charakterystyk systemowych symulatora kierowania pojazdem opracowanego w Instytucie Fraunhofera. Na wstępie zdefiniowano i przedyskutowano szczegółowo wymagania dla modelu czasu rzeczywistego i obliczeń w czasie rzeczywistym. Zaprezentowano takie aspekty systemu, jak opóźnienie transportu i obliczenia równoległe złoŻonych modeli czasu rzeczywistego. Pokazano ponadto działanie interfejsu pomiędzy modelem i systemem symulatora. W celu zademonstrowania charakterystyk systemu wykonano dwa testy symulatora: w pełni interaktywny test kierowania koparkĄ kołowĄ w nierównym terenie, oraz test kierowania samochodem pasaŻerskim. Co więcej, charakterystyki symulatora majĄce znaczenie praktyczne, takie jak opóźnienie czasowe odpowiedzi symulatora, pasmo sygnału przyspieszenia symulatora wyznaczone przy sztucznym pobudzeniu i z testu kierowania pojazdem zostały zaprezentowane i przedyskutowane.
    Źródło:
    Archive of Mechanical Engineering; 2014, LXI, 2; 270-285
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    R&D of novel medicinal materials for curing cancer: sugar modified Gd-DTPA MRI contrast agents and phospha sugar anti-cancer agents
    Autorzy:
    Yamashita, Y.
    Yamashita, M.
    Fujie, M.
    Suyama, K. A. T.
    Ito, S.
    Reddy, V. K.
    Yamada, M.
    Ogawa, K.
    Ozaki, N.
    Nakamura, S.
    Aoki, T.
    Yu, G.
    Aoshima, K.
    Kato, T.
    Kamikage, N.
    Kiyofuji, K.
    Takehara, Y.
    Sakahara, H.
    Takayanagi, H.
    Oshikawa, T.
    Laurent, S.
    Burtea, C.
    Van der Elst, L.
    Muller, R. N.
    Powiązania:
    https://bibliotekanauki.pl/articles/385218.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    MRI contrast agent
    sugar-ball-dendrimer
    Gd (III)-DTPA complex
    phospha sugars
    phospholanes
    anticancer agent
    tumor
    Opis:
    Novel Sugar Dendritic Gd-DTPA Complexes for MRI Contrast Agents were prepared and evaluated by in vitro and in vivo methods. The sugar dendritic MRI contrast agents have a good blood vesse pool character, and draw blood vessels and liver cancer remarkably clearer than the clinically using Gd-DTPA. Phospha sugar derivatives or phosphorus heterocyclic derivatives provided by functional groups such as epoxide, bromide, etc., were prepared and evaluated by MTT in vitro method. These phospha sugar derivatives showed excellent activities against leukemia cells as well as solid cancer cells in fashions of (i) higher activity, (ii) wider spectra, (iii) higher selectivity and specificity distingushing healthy and cancer cells, etc., compared with the molecular targeting chemotheraputic anti-cancer agent, Gleevec.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 80-83
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positronium for antihydrogen production in the AEGIS experiment
    Autorzy:
    Consolati, G.
    Aghion, S.
    Amsler, C.
    Bonomi, G.
    Brusa, R.
    Caccia, M.
    Caravita, R.
    Castelli, F.
    Cerchiari, G.
    Comparat, D.
    Demetrio, A.
    Di Noto, L.
    Doser, M.
    Evans, C.
    Fanì, M.
    Ferragut, R.
    Fesel, J.
    Fontana, A.
    Gerber, S.
    Giammarchi, M.
    Gligorova, A.
    Guatieri, F.
    Haider, S.
    Hinterberger, A.
    Holmestad, H.
    Kellerbauer, A.
    Khalidova, O.
    Krasnicky, D.
    Lagomarsino, V.
    Lansonneur, P.
    Lebrun, P.
    Malbrunot, C.
    Mariazzi, S.
    Marton, J.
    Matveev, V.
    Mazzotta, Z.
    Müller, S.
    Nebbia, G.
    Nedelec, P.
    Oberthaler, M.
    Pacifico, N.
    Pagano, D.
    Penasa, L.
    Petracek, V.
    Prelz, F.
    Prevedelli, M.
    Ravelli, L.
    Rienaecker, B.
    Robert, J.
    Røhne, O.
    Rotondi, A.
    Sandaker, H.
    Santoro, R.
    Smestad, L.
    Sorrentino, F.
    Testera, G.
    Tietje, I.
    Widmann, E.
    Yzombard, P.
    Zimmer, C.
    Zmeskal, J.
    Zurlo, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1057954.pdf
    Data publikacji:
    2017-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    04.80.Cc
    07.77.-n
    36.10.Dr
    78.70.Bj
    Opis:
    The primary goal of the Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEGIS) collaboration is to measure for the first time precisely the gravitational acceleration of antihydrogen, H̅, a fundamental issue of contemporary physics, using a beam of antiatoms. Indeed, although indirect arguments have been raised against a different acceleration of antimatter with respect to matter, nevertheless some attempts to formulate quantum theories of gravity, or to unify gravity with the other forces, consider the possibility of a non-identical gravitational interaction between matter and antimatter. We plan to generate H̅ through a charge-exchange reaction between excited Ps and antiprotons coming from the Antiproton Decelerator facility at CERN. It offers the advantage to produce sufficiently cold antihydrogen to make feasible a measurement of gravitational acceleration with reasonable uncertainty (of the order of a few percent). Since the cross-section of the above reaction increases with n⁴, n being the principal quantum number of Ps, it is essential to generate Ps in a highly excited (Rydberg) state. This will occur by means of two laser excitations of Ps emitted from a nanoporous silica target: a first UV laser (at 205 nm) will bring Ps from the ground to the n=3 state; a second laser pulse (tunable in the range 1650-1700 nm) will further excite Ps to the Rydberg state.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 5; 1443-1449
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-72 z 72

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies