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    Wyświetlanie 1-6 z 6
    Tytuł:
    Express construction of pedestrian underpass using corrugated steel box culvert
    Autorzy:
    Agarwal, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/383397.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    Pedestrian Underpass
    Corrugated Steel Plates
    Opis:
    This paper deals with a new pedestrian underpass made from structural deep corrugated plates over a newly constructed airport access road for Mumbai International Airport, India. The underpass was constructed to cater for the demands of local establishments for crossing the highway. The steel bridge is founded on raft footing made of reinforced concrete. Its effective span is 4.10 m and clear height is 2.29 m. The entire underpass was constructed in just 20 days. The structural design and construction of the underpass is described in detail in this paper.
    Źródło:
    Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 35-43
    1897-4007
    Pojawia się w:
    Archiwum Instytutu Inżynierii Lądowej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anisotropic Elastic and Acoustic Properties of Bulk Graphene Nanoplatelets Consolidated by Spark Plasma Sintering
    Autorzy:
    Koller, M.
    Seiner, H.
    Landa, M.
    Nieto, A.
    Agarwal, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402122.pdf
    Data publikacji:
    2015-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.35.Cg
    81.40.Jj
    81.05.ue
    81.20.Ev
    Opis:
    Elastic anisotropy and acoustic attenuation in bulk material consisting of consolidated graphene nanoplatelets are studied. The material was prepared by spark plasma sintering, and exhibits highly anisotropic microstructure with the graphene nanoplatelets oriented perpendicular to the spark plasma sintering compression axis. The complete tensor of elastic constants is obtained using a combination of two ultrasonic methods: the through-transmission method and the resonant ultrasound spectroscopy. It is shown that the examined material exhibits very strong anisotropy both in the elasticity (the Young moduli in directions parallel to the graphene nanoplatelets and perpendicular to them differ by more than 20 times) and in the attenuation, where the dissipative effect of the internal friction in the graphene nanoplatelets combines with strong scattering losses due to the porosity. The results are compared with those obtained for ceramic-matrix/graphene nanoplatelet composites by the same ultrasonic methods.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 4; 670-674
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gold Nanoparticles with Elongated Shapes: Synthesis and Optical Properties
    Autorzy:
    Olejnik, M.
    Agarwal, A.
    Zaleszczyk, W.
    Kotov, N.
    Mackowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1419540.pdf
    Data publikacji:
    2012-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.07.-b
    81.07.Pr
    87.64.kv
    87.64.K-
    Opis:
    We use a seed-mediated growth to fabricate gold nanorods in water solution. By changing the amount of silver salt we demonstrate the control of aspect ratio of the obtained rods. The microscopic and spectroscopic analyses provide ways to characterize the morphology and the optical properties of the gold nanorods. Nanorods synthesized using this approach feature length of the order of 50-60 nm, which translates into longitudinal plasmon resonances in the near infrared spectrum region.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 2; 346-349
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prosthetic status and prosthetic needs amongst geriatric fishermen population of Kutch coast, Gujarat, India
    Autorzy:
    Kumar, D.R.V.
    Raju, D.S.
    Naidu, L.
    Deshpande, S.
    Chadha, M.
    Agarwal, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/874703.pdf
    Data publikacji:
    2015
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    geriatrics
    prosthetic status
    prosthetic need
    fisherman
    dental hygiene
    dental health
    environmental factor
    oral health
    human population
    Kutch coast
    Gujarat state
    India
    Opis:
    Background. Literature among fishermen of India is scanty. The external factors like diet, quality of dental hygiene and environmental factors have an effect on oral health. Moreover elderly age group offer very little importance towards their oral health. Objective. To assess the prosthetic status and prosthetic treatment needs among the geriatric fishermen population of Kutch coast, Gujarat, India. Material and Methods. A cross sectional descriptive study was conducted among 1200 elderly people (above 60 years) of Kutch coast, Gujarat, India. They were interviewed and examined using a proforma designed with the help of WHO Oral Health Survey 1997. Chi square test was used for comparisons. Confidence level and p-value were set at 95% and 5% respectively. Results. Out of 1200 elderly people, 836 were males and 364 were females. Considering the prosthetic status, majority (76.7%) had no prosthesis followed by full removable dentures (12.3%). An insight into the prosthetic needs showed that majority (27.3%) had a need for multiunit prosthesis. Conclusion. In this study, it was seen that overall prosthetic status was low and prosthetic need was high. Therefore new avenues have to be discovered to make the prosthetic treatment readily available to the elderly.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2015, 66, 2
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plasmon Enhancement of Fluorescence in Single Light-Harvesting Complexes from em Amphidinium carterae
    Autorzy:
    Bujak, Ł.
    Piątkowski, D.
    Mackowski, S.
    Wörmke, S.
    Jung, C.
    Bräuchle, C.
    Agarwal, A.
    Kotov, N.
    Schulte, T.
    Hofmann, E.
    Brotosudarmo, T.
    Scheer, H.
    Govorov, A.
    Hiller, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807594.pdf
    Data publikacji:
    2009-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.80.Nj
    87.14.E-
    87.64.M-
    Opis:
    We show that single peridinin-chlorophyll a-protein light-harvesting complexes from dinoflagellate Amphidinium carterae placed near to silver nanoparticles show strongly enhanced fluorescence emission. Single molecule spectroscopy experiments performed at room temperature point toward an enhancement of more than an order of magnitude for optimal conditions. Irrespective of the enhancement, we observe no effect of the metal nanoparticle on the fluorescence emission energy of the complex. This result provides a way to control the optical properties of biomolecules via plasmon excitations in metal nanoparticles.
    Źródło:
    Acta Physica Polonica A; 2009, 116, S; S-22-S-25
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quantum Noise Characteristics of Nonlinear Optical Amplifiers
    Autorzy:
    Boyd, R. W.
    Agarwal, G. S.
    Davis, W. V.
    Gaeta, A. L.
    Nagasako, E. M.
    Kauranen, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931479.pdf
    Data publikacji:
    1994-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.-k
    42.50.Lc
    Opis:
    Quantum mechanical arguments show that any optical amplifier must add noise to the amplified beam of light. For the case of a high gain amplifier with a coherent (Poissonian) input, the signal-to-noise ratio of the amplified beam must be at least two times smaller than that of the incident beam. We review the theoretical basis of this prediction. We also describe the results of our experimental investigations of the noise properties of optical amplifiers that utilize the nonlinear optical response of strongly driven atomic transitions.
    Źródło:
    Acta Physica Polonica A; 1994, 86, 1; 117-126
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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