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    Wyświetlanie 1-4 z 4
    Tytuł:
    Modeling the contact of stiff and soft bodies with a rigid support by short range force fields
    Autorzy:
    Contento, A.
    Di Egidio, A.
    Dziedzic, J.
    Tatone, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1943218.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Gdańska
    Tematy:
    impast
    contact
    short range interaction
    soft body dynamice
    Opis:
    Body impact-contact dynamics is a classical subject in mechanics. Most of the papers on the subject are based on a kinematical or impulse-exchange approach. In this paper a different approach has been adopted. It consists in assigning a constitutive description for the contact forces between the boundaries of bodies which get close to each other. In particular, a field of short range forces has been used to model the interaction between an affine body and the planar surface of a fixed rigid support. These forces are able to describe the impact, friction and adhesion allowing the body to have complex motions which look rather realistic. By an affine body we mean a body which undergoes affine, or homogeneous, deformations. Depending on the material, such a body can show very different behavior, from a quite rigid motion to a motion characterized by very large deformations. A soft body is assumed to be made of a viscous incompressible Mooney-Rivlin material. Though a microscopic model of surface interaction could be used in a multiscale approach, the description provided here is macroscopic only.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 1-2; 155-181
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultrathin Glass for the Photovoltaic Applications
    Autorzy:
    Dziedzic, J.
    Inglot, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032413.pdf
    Data publikacji:
    2017-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    84.60.Jt
    71.20.Nr
    72.40.+w
    42.70.-a
    85.60.-q
    Opis:
    Chemically strengthened ultrathin glass with a thickness of less than 1 mm has many advantages, such as flexibility, smooth surface, good transmittance, excellent gas and water barrier, much higher toughened in relations to thermally tempered glass, higher impact resistance, increased corrosion resistance and much higher abrasion rate. Chemical strengthening process is a process where an ion exchange occurs by diffusion between the glass panes and the brine solution bath. The deeper penetration of the glass surface by ions contained in the brine bath contributes to the hardness of the glass sheets, which reduces the occurrence of surface defects that cause reflections. From the point of view of photovoltaic applications ultrathin glass significantly reduces the weight of the whole photovoltaic panel structure with respect to known solutions. Furthermore, the reduction of the glass thickness increases the transmission of solar energy in the visible range directly through the glass. In addition, chemical tempered glass has a lower reflectance of light from the surface than the thermally tempered glass. What is more, ultrathin glass is perfect substrate for deposition of nanomaterials, i.e. conductive films or quantum dots. In this work we demonstrate that chemically strengthened ultrathin glass is a perfect material for the photovoltaic applications, i.e. as a substrate for deposition of thin layers and for the design of photovoltaic modules of reduced weight.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 1; 176-178
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies of Permittivity in the Triglicinium Sulphate Crystals Doped with Chromium Ions as a Function of Temperature and Electric Field
    Autorzy:
    Dziedzic, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2014251.pdf
    Data publikacji:
    2000-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.70.Kb
    Opis:
    Permittivity in the triglicinium sulphate crystals doped with chromium ions Cr$\text{}^{3+}$ as a function of temperature and of intensity of electric field polarising the crystal was investigated. On the base of thermodynamical theory, the relationship among permittivity, temperature and electric field intensity was calculated. Coefficients of the expansion of the thermodynamic potential were determined. Experimental results were compared with those resulting from the thermodynamical theory.
    Źródło:
    Acta Physica Polonica A; 2000, 98, 4; 373-381
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of endoscopic tattooing in intraoperative localization of colon tumours and sentinel lymph nodes
    Autorzy:
    Nowak, N.
    Dziedzic, J.
    Nurczyk, K.
    Zakoscielny, A.
    Bury, P.
    Zgodzinski, W.
    Zinkiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2097996.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    colorectal cancer
    surgical treatment
    endoscopy
    endoscopic tatooing
    non-invasive technique
    Opis:
    Introduction. Minimally invasive techniques in colorectal surgery have become increasingly popular and are considered a standard of care in most surgical cenres. Locating the tumour during laparoscopic procedure can be technically challenging. Incorrect localization of the primary lesion may lead to a non-radical resection margin. The technique of endoscopic tattooing (ET) prior to surgery or endoscopic treatment is considered a useful tool. Various dyes can be used for this purpose, such as: Indian ink, methylene blue, indigocarmine, toluidine blue, isosulfan blue, haematoxylin and eosin, indoxin green. This procedure is recommended by international scientific societies (ASGE and ESGE). Objective. The purpose of the study is to review the current literature on the use of ET in large intestine tumour lesions. Materials and method. A MEDLINE literature search of English language articles addressing the use of ET to enable intraoperative tumour localization in colorectal surgery was performed to evaluate and summarize the feasibility of this technique. Results. The use of ET enables the easy and safe localization of colorectal tumurs during minimally invasive colorectal procedures. The percentage of complications is insignificant. Conclusions. The available literature proves the safety and benefits of using the ET prior to surgical or endoscopic treatment. ASGE and ESGE recommend the use of ET in marking tumours before surgical treatment, and the area after endoscopic resection for further evaluation.
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2020, 14, 4; 134-138
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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