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Wyszukujesz frazę "Takahashi, K." wg kryterium: Autor

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    Wyświetlanie 1-11 z 11
    Tytuł:
    On operators with unitary ϱ-dilations
    Autorzy:
    Ando, T.
    Takahashi, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294732.pdf
    Data publikacji:
    1997
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    polynomially bounded operators
    operators of class $C_ϱ$
    unitary ϱ-dilation
    Opis:
    We show a polynomially boundend operator T is similar to a unitary operator if there is a singular unitary operator W and an injection X such that XT = WX. If, in addition, T is of class $C_ϱ$, then T itself is unitary.
    Źródło:
    Annales Polonici Mathematici; 1997, 66, 1; 11-14
    0066-2216
    Pojawia się w:
    Annales Polonici Mathematici
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Percutaneous Exposure Incidents Among Australian Hospital Staff
    Autorzy:
    Smith, D. R.
    Leggat, P. A.
    Takahashi, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/90789.pdf
    Data publikacji:
    2005
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    Percutaneous Exposure Incident
    needlestick
    sharps
    health care workers
    Australia
    hospital
    universal precautions
    nurse
    doctor
    Hepatitis B
    pielęgniarka przemysłowa
    szpitale
    wypadki przy pracy
    warunki pracy
    czynniki ryzyka
    personel pielęgniarski
    Opis:
    We investigated all reported percutaneous exposure incidents (PEI) among staff from a large Australian hospital in the 3-year period, 2001–2003. There were a total of 373 PEI, of which 38.9% were needlestick injuries, 32.7% were cutaneous exposures and 28.4% sharps-related injuries. Nurses were the most commonly affected staff members, accounting for 63.5% of the total, followed by doctors (18.8%) and other staff (17.7%). Needlestick injuries were responsible for the majority of nurses’ PEI (44.7%). Sharps injuries constituted the major category for doctors (44.3%). Most needlestick injuries (67.6%) were caused by hollow-bore needles, while the majority of cutaneous exposures involved blood or serum (55.8%). Most sharps injures were caused by unknown devices (35.9%) or suture needles (34.9%). Overall, our investigation suggests that PEI is a considerable burden for health care workers in Australia. Further research is now required to determine the relationships, if any, between workers who suffer PEI and those who do not.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2005, 11, 3; 323-330
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Single-hole one-electron superexcited states and doubly-excited states of molecules as studied by coincident electron-energy-loss spectroscopy
    Autorzy:
    Odagiri, T.
    Fukuzawa, H.
    Takahashi, K.
    Kouchi, N.
    Hatano, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/148525.pdf
    Data publikacji:
    2003
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    doubly-excited molecule
    electron energy loss spectroscopy
    H2
    N2
    O2
    superexcited molecule
    Opis:
    The single-hole one-electron superexcited states and doubly-excited states of H2, D2, N2 and O2 have been investigated by means of the coincident electron-energy-loss spectroscopy that we developed. In this method the electron-energy-loss spectra tagged with the vacuum ultraviolet fluorescences emitted by the neutral fragments produced from superexcited molecules are measured by means of electron-photon coincidence technique. The contribution from ionization in this sort of electronenergy- loss spectra is suppressed to a large extent, and thus the structures attributed to the superexcited states of molecules become highlighted. The comparison with the photoexcitation experiments by means of the oscillator strengths give us clear discrimination between allowed and forbidden superexcited-states. As to H2, D2, and N2, the doubly-excited states including those found in the present experiment have been investigated in terms of both their energies and dynamical behavior. A new possibility of the coincident electron-energy-loss spectroscopy has been established in investigating the single-hole one-electron superexcited states of O2: the time-resolved coincident electron-energy-loss spectrum has been measured to distinguish between the direct process producing excited oxygen atoms and indirect one due to cascade transition. It has turned out that the coincident electron-energy-loss spectroscopy is a key tool for investigating superexcited molecules.
    Źródło:
    Nukleonika; 2003, 48, 2; 95-102
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recent Trends in ILO Conventions Related to Occupational Safety and Health
    Autorzy:
    Wilson, D. J.
    Takahashi, K.
    Smith, D. R.
    Yoshino, M.
    Tanaka, C.
    Takala, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/90843.pdf
    Data publikacji:
    2006
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    International Labour Organization
    convention
    ratification
    occupational safety and health
    prawo pracy
    prawo
    umowy międzynarodowe
    bezpieczeństwo i higiena pracy
    Międzynarodowa Organizacja Pracy
    Międzynarodowe Biuro Pracy
    konwencja
    ratyfikacja
    Opis:
    The present study was conducted to analyze the ratification status of International Labour Organization (ILO) conventions related to occupational safety and health (OSH) by ILO member states in terms of national indicators (length of ILO membership and national income status) and regional affiliation. 17 conventions designated as OSH-related by the 2003 International Labour Conference were examined. In general, countries with longer ILO membership ratified higher numbers of conventions related to OSH. With some variation, long-membership countries had the largest number of ratifications, followed by middle- and shortmembership countries in all regions. There were also incremental increases in the number of ratifications for OSH-related conventions according to the national income status. Common regional characteristics that could not be explained by the factors studied also existed. Future efforts to increase ratification at an international level will need to consider the factors influencing ratification practice among the member states.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2006, 12, 3; 255-266
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Concept of hybrid embankment
    Koncepcja nasypu hybrydowego
    Autorzy:
    Fukue, M.
    Lechowicz, Z.
    Takahashi, R.
    Uehara, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/81841.pdf
    Data publikacji:
    2015
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Opis:
    Concept of hybrid embankment. An innovative technique which is similar to a natural process, i.e., biogeochemical (carbonate) diagenesis, is proposed to construct a hybrid embankment. In this study, the hybrid embankment is defined as a soil embankment which has a microbially induced framework structure of sand sheets and columns in the soft soil matrix. The sand materials are cemented with magnesium-calcite or dolomite, induced by ureolytic microbes. To design and construct hybrid embankments, fundamental problems, such as feasibility in terms of stability, geoenvironmental engineering practices, etc., are examined and discussed. It was shown that the hybrid embankment can be environmentally friendly and also can contribute solving technical and financial problems encountered in actual practice.
    Koncepcja nasypu hybrydowego. W artykule przedstawiono propozycję budowy nasypu hybrydowego z wykorzystaniem wzmocnienia podobnego do naturalnego procesu biogeochemicznej (węglanowej) diagenezy. Korpus nasypu hybrydowego stanowi grunt słaby z poziomymi wkładkami i kolumnami z piasku wzmocnionego cementacją węglanową wywołaną działaniem drobnoustrojów. Piasek w poziomych wkładkach i kolumnach jest wzmocniony kalcytem magnezowym lub dolomitem wytworzonym przez drobnoustroje ureolityczne. W celu zaprojektowania i zbudowania hybrydowego nasypu omówiono problemy związane ze statecznością nasypu i wykonaniem jego wzmocnienia. Wykazano, że nasyp hybrydowy jest przyjazny środowisku i może przyczynić się do rozwiązania problemów technicznych i finansowych napotykanych przy wykorzystaniu gruntów słabych do budowy nasypów.
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation; 2015, 47, 2
    0208-5771
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of reliability of perioral muscle pressure measurements using a newly developed device with a lip piece
    Autorzy:
    Takahashi, M.
    Koide, K.
    Suzuki, H.
    Satoh, Y.
    Iwasaki, S.-I.
    Powiązania:
    https://bibliotekanauki.pl/articles/306575.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    nacisk
    wiarygodność
    mięśnie
    jama ustna
    tongue pressure
    upper lip pressure
    lower lip pressure
    absolute reliability
    relative reliabilit
    Opis:
    Purpose: We examined the reliability of measurements using a newly developed perioral muscle pressure measuring device with a lip piece in healthy adults. Methods: Subjects were 40 healthy men (25.8 years) with normal stomatognathic function. Perioral muscle pressure measuring device with a lip piece was used to measure upper lip, lower lip and tongue pressure, and a balloon-based measurement device was used to measure tongue and cheek pressure. Each measurement was taken twice with a 1-min interval between the two measurements. We determined intra-rater reliability by using the intra-class correlation coefficient as a test of relative reliability. As a test of absolute reliability, Bland–Altman analysis was used to assess systematic bias and the 95% confidence interval of the minimal detectable change was calculated. Additionally, the coefficient of variation was calculated. The Spearman–Brown formula was calculated the number of measurements needed to achieve a confidence coefficient ≥0.9. Each set of measurements was followed by a second set that were taken 1 week later. Results: All measurements showed high values of intra-class correlation coefficient. Upper lip, tongue, and cheek pressure can be determined based on a single measurement, while lower lip pressure requires averaging twice. No systematic bias was observed. The coefficients of variation of measurements were almost the same between the two devices. Conclusion: Measurements were highly reliable regardless of the type of perioral muscles. Our findings suggest that the method described in this study is useful as a quantitative chair side method for examining perioral muscle pressure.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2016, 18, 1; 145-153
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    3-D optimal design of laminated yoke of billet heater for rolling wire rod using ON/OFF method
    Autorzy:
    Takahashi, N.
    Nakazaki, S.
    Miyagi, D.
    Uchida, N.
    Kawanaka, K.
    Namba, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/140616.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metoda stopniowa
    problem prądów wirowych
    metoda ON/OFF
    ON/OFF method
    step-by-step method
    eddy current problem
    billet heater
    Opis:
    The optimization method using the ON/OFF sensitivity analysis has an advantage hat an epoch-making construction of magnetic circuit may be obtained. Therefore, it is attractive for designers of magnetic devices. We have already developed the ON/OFF method for the optimization of a static magnetic field problem, and the effectiveness is verified by applying it to the optimization of magnetic recording heads. In this paper, the ON/OFF sensitivity method is extended to the optimization of the eddy current problem using the adjoint variable. The newly developed ON/OFF method is applied to the determination of the optimal topology of the yoke of the billet heater for rolling wire rod. As a result, the optimal shape of yoke, which we could not imagine beforehand can be obtained. It is shown that the local heating of the yoke was reduced without decreasing the heating efficiency.
    Źródło:
    Archives of Electrical Engineering; 2012, 61, 1; 115-123
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication of nanoparticles by electric discharge plasma in liquid
    Nanocząstki wytworzone metodą wyładowań elektrycznych w cieczy
    Autorzy:
    Yatsu, S
    Takahashi, H.
    Sasaki, H.
    Sakaguchi, N
    Ohkubo, K
    Muramoto, T.
    Watanabe, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/351402.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nanoparticles
    plasma discharge
    electrolysis
    silicon
    nanocząsteczki
    wyładowania plazmowe
    elektroliza
    krzem
    Opis:
    The electric plasma discharge method involves the application of a voltage between a cathode and anode in a conductive electrolytic solution to create a discharge plasma at the cathode. When certain material is used as the cathode, small droplets are emitted with the plasma discharge, and the melted droplets are rapidly cooled in the solution to form nanoscale particles of the material. In this work, nanoparticles of Al, Au, Si, and various alloys of between 100 nm and less than 10 nm in size were produced and characterized. Characterization of Si nanoparticles is especially important because their use in lithium batteries greatly influences battery performance. It was found by high resolution electron microscopy and microstructural surface analysis that oxidation layers of a few nm in thickness were formed on the surface of the Si nanoparticles.
    W metodzie wyładowań elektrycznych w cieczy pod wpływem przyłożonej różnicy potencjałów pomiędzy anodą i katodą zanurzonymi w elektrolicie dochodzi do wyładowania plazmy na katodzie. Gdy zastosuje się materiał jako katodę, podczas wyładowania plazmy tworzą się małe krople ciekłego materiału, które gwałtownie krzepną w elektrolicie. W ten sposób wytwarzane są cząstki nanometrycznej wielkości. Przy użyciu tej metody możliwe jest wytwarzanie nanocząstek różnych materiałów. Wytworzone nanometryczne cząstki Al, Au, Si oraz stopów miały wymiary od 100 nm do poniżej 10 nm. W szczególności nanocząstki Si stosowane do wytwarzania baterii litowych znacząco wpływają na wydajność baterii, z tego tez powodu bardzo ważne jest scharakteryzowanie tych cząstek. Obserwacje przy użyciu wysokorozdzielczej transmisyjnej mikroskopii elektronowej i analiza mikrostruktury nanocząstek Si wskazują, że na powierzchni cząstek znajduje się warstwa tlenków o grubości kilku nm.
    Źródło:
    Archives of Metallurgy and Materials; 2013, 58, 2; 425-429
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The bacteriostatic effect of erythritol on canine periodontal disease–related bacteria
    Autorzy:
    Tochio, T.
    Makida, R.
    Fujii, T.
    Kadota, Y.
    Takahashi, M.
    Watanabe, A.
    Funasaka, K.
    Hirooka, Y.
    Yasukawa, A.
    Kawano, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/16539083.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    erythritol
    canine
    periodontal disease
    Porphyromonas gulae
    Porphyromonas cangingivalis
    Fusobacterium
    oral microbiota
    Opis:
    Erythritol helps both prevent and improve periodontal disease and is therefore widely used for dental care in humans. However, only a few studies have investigated the effects of erythritol on periodontal disease in animals. We hypothesized that erythritol could be used to prevent and improve periodontal disease also in canines and investigated the effects of erythritol on canine periodontal disease–related pathogenic bacteria using both in vitro and in vivo methods. The effect of erythritol on the proliferation of Porphyromonas gulae, which is reportedly associated with canine periodontal disease, was investigated in vitro. In addition, a 4-week intervention trial using an external gel preparation containing 5% erythritol was performed in canines with mild periodontal disease; changes in the microbiota around periodontal lesions were investigated using next-generation sequencing and bioinformatics analysis. The growth of P. gulae was significantly suppressed by erythritol in vitro. In the intervention study, the Shannon index, an indicator of the species distribution α-diversity, and the occupancy of several canine periodontal disease – related bacteria ( P. gulae, P. cangingivalis) were significantly decreased in periodontal lesions. Based on the results of in vitro and in vivo studies, we conclude that, as in humans, erythritol has bacteriostatic effects against periodontal disease – related bacteria in canines.
    Źródło:
    Polish Journal of Veterinary Sciences; 2022, 25, 1; 75-82
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemical Reactions and Electronic Functions of Carbon Cluster Arrays Studied by Scanning Tunneling Spectroscopy and High-resolution Electron Energy Loss Spectroscopy
    Autorzy:
    Kasuya, A.
    Hu, C.-W.
    Suto, S.
    Tohji, K.
    Takahashi, H.
    Czajka, R.
    Wawro, A.
    Nishina, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968721.pdf
    Data publikacji:
    1998-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.16.Ch
    61.14.Rq
    73.61.Wp
    Opis:
    Novel nanometer scale structures have been produced by thermal heating or laser irradiation on the surface of single- and multi-layers of C$\text{}_{60}$ and C$\text{}_{84}$ on Si. These structures were examined by combined measurements of scanning tunneling spectroscopy and high resolution electron energy loss spectroscopy. The results show specific chemical reactions of substrate with carbon clusters having single- and double-bonded network. Covalent bonds are formed in some of these chemical reactions.
    Źródło:
    Acta Physica Polonica A; 1998, 93, 2; 317-322
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    X-Ray Diffraction Study of CeT₂Al₁₀ (T = Ru, Os) at Low Temperatures and under Pressures
    Autorzy:
    Kawamura, Y.
    Hayashi, J.
    Takeda, K.
    Sekine, C.
    Tanida, H.
    Sera, M.
    Nakano, S.
    Tomita, T.
    Takahashi, H.
    Nishioka, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032713.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.50.Ks
    Opis:
    We have carried out a powder X-ray diffraction investigation on antiferromagnetic Kondo semiconductors CeRu₂Al₁₀ and CeOs₂Al₁₀ at low temperatures and under high pressures as well as the structural investigation on single crystal of these compounds. The results of powder X-ray studies of CeRu₂Al₁₀ and CeOs₂Al₁₀ indicate that these compounds do not have structural transition at its antiferromagnetic ordering temperature. The results of single crystal structural refinement indicate that the b-axis of this crystal structure is insensitive not only to pressure but also to temperature and that the effect of cooling to Ce-Ce distance for CeRu₂Al₁₀ is the same as that for CeOs₂Al₁₀.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 988-990
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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