Temat: 83.85.-c - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Microstructure and residual stress in AMS 6308 steel after vacuum carburizing and gas quenching
Autorzy:: Dychtoń, K.
Kocurek, P.
Rokicki, P.
Wierzba, B.
Drajewicz, M.
Sieniawski, J.
Tematy:: 81.05.-t
87.64.-t
83.85.-c; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1155056.pdf Link otwiera się w nowym oknie
Opis:: In this work, the vacuum carburizing and gas quenching has been done on gears box made of high strength alloy steel AMS 6308 in four different temperatures. The measurements of hardness was done to evaluate the effective case depth for each temperature. The analysis of retained austenite was presented as a factor which can affect values of residual stress. The residual stresses were measured in Protoi XDR portable diffractometer and the analysis was examined to find influence of temperature and carburizing time on the direction and values of residual stresses.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the Effect of Magnetostimulation on Viscoelastic Properties of Blood in Patients with Lasting Pain
Autorzy:: Marcinkowska-Gapińska, A.
Kowal, P.
Tematy:: 83.50.Ax
83.60.Fg
83.60.Bc
83.80.Lz
83.85.Vb
87.50.C-; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1197513.pdf Link otwiera się w nowym oknie
Opis:: The aim of the current work was to analyze the influence of alternating magnetic field on the viscoelastic properties of blood in vivo in patients with lasting pain problems. Oscillatory techniques, also called the dynamic mechanical analysis, have been used in the current work to study the viscoelastic properties of blood. The blood samples were collected from patients of a neurological ward complaining about spinal cord and lower limbs pain. Altogether 25 patients took part in the study. A blood sample was collected from each patient twice: before the magnetostimulation and after five treatments. For each blood sample, the hematocrit value was measured using the standard method. Plasma viscosity and the complex whole blood viscosity were measured by means of a rotary-oscillating rheometer Contraves LS40. Magnetic field was generated by the instrument Viofor JPS and the magnetostimulation treatments were performed using different programs. The analysis of the results included estimation of the hematocrit value, plasma viscosity, complex whole blood viscosity and its components: viscous and elastic viscosity at four chosen amplitudes of the shear rate as a function of the applied treatment program. The results obtained in the study suggest that rheological properties of blood change depending on the applied magnetostimulation program.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Differentiation of Native and Reconstructed Ferritin using the MRI Gradient Echo Pulse Sequence
Autorzy:: Balejcikova, L.
Strbak, O.
Baciak, L.
Kovac, J.
Masarova, M.
Krafcik, A.
Kopcansky, P.
Dobrota, D.
Frollo, I.
Tematy:: 75.60.Ej
83.85.Fg
87.61.-c
87.64.Cc
87.85.jf; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1032829.pdf Link otwiera się w nowym oknie
Opis:: Ferritin is a biological iron storage biomacromolecule, consisting of a spherical protein shell (apoferritin) and mineral iron core. It plays a crucial role in the pathological processes of disrupted iron homeostasis followed by iron accumulation, linked with various disorders (e.g. neuroinflammation, neurodegeneration, cirrhosis, cancer, etc.) In vitro reconstructed ferritin, with the assistance of a non-invasive magnetic resonance imaging technique, has the potential to become a suitable biomarker of these pathological processes. Through gradient echo pulse sequencing, we were able to clearly distinguish between native (physiological) and reconstructed/iron-overloaded (pathological) ferritin, which can serve as a starting point for the development of a method for their differentiation. Such method is necessary for the early diagnosis of iron-based diseases.
Dostawca treści:: Biblioteka Nauki

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