Informacja

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

Wyszukujesz frazę "red blood cell" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Simultaneous measurement of refractive index and thickness for optically transparent object with a dual-wavelength quantitative technique
Autorzy:
Xu, X.
Wang, Y.
Xu, Y.
Jin, W.
Powiązania:
https://bibliotekanauki.pl/articles/174666.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
digital holography
phase measurement
cell measurement
red blood cell
Opis:
We present a new dual-wavelength quantitative measurement approach that can be employed for simultaneously measuring both the refractive index and the thickness of the homogenous specimen. This method is realized by dual-wavelength in-line phase-shifting digital holography, and then the phase images are obtained by using four-phase step algorithm for each wavelength separately. Based on computer simulation technology, the feasibility and the effectiveness of our proposed method are demonstrated by comparing our simulation results with the experimental results of the spherical silica bead and the red blood cell, respectively. Our work will provide some guidance in the experimental research for transparent phase objects.
Źródło:
Optica Applicata; 2016, 46, 4; 597-605
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluctuations in settling velocity of red blood cell aggregates
Autorzy:
Kempczyński, A
Bosek, M.
Grzegorzewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/173827.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
particle image velocimetry
red blood cell aggregation
sedimentation
velocity fluctuations
Opis:
Sedimentation of red blood cell aggregates was experimentally investigated by optical imaging. Suspensions of red blood cell at low hematocrit were obtained from blood of healthy donors. The velocity of three-dimensional red blood cell aggregates was measured using particle image velocimetry. The magnitude and spatial correlation functions of the velocity fluctuations of the settling aggregates were determined. It is shown that the fluctuations in the settling velocity exhibit characteristic correlations in the form of swirls. The formation of 3-D red blood cell aggregates leads to a large initial swirl. The growth of the aggregates and their sedimentation diminishes the swirls size.
Źródło:
Optica Applicata; 2014, 44, 3; 365-373
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model for biological cell deformation in a cylindrical pore
Autorzy:
Szwast, M.
Suchecka, T.
Piątkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/185778.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
deformacja komórek
czerwone krwinki
cell deformation
red blood cell
cell stamina
Opis:
Some studies show that cells are able to penetrate through pores that are smaller than cell size. It concerns especially Red Blood Cells but it also may concern different types of biological cells. Such penetration of small pores is a very significant problem in the filtration process, for example in micro or ultrafiltration. Deformability of cells allows them to go through the porous membrane and contaminate permeate. This paper shows how cells can penetrate small cylindrical holes and tries to assess mechanical stress in a cell during this process. A new mathematical approach to this phenomenon was presented, based on assumptions that were made during the microscopic observation of Red Blood Cell aspiration into a small capillary. The computational model concerns Red Blood Cell geometry. The mathematical model allows to obtain geometrical relation as well as mechanical stress relations.
Źródło:
Chemical and Process Engineering; 2012, 33, 3; 385-396
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theory of Red Blood Cell Oscillations in an Ultrasound Field
Autorzy:
Johansen, K.
Kimmel, E.
Postema, M.
Powiązania:
https://bibliotekanauki.pl/articles/178064.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spatio-temporal cell dynamics
Rayleigh-Plesset equation
spherical cell
red blood cell
erythrocyte
sonophore
Opis:
Manipulating particles in the blood pool with noninvasive methods has been of great interest in therapeutic delivery. Recently, it was demonstrated experimentally that red blood cells can be forced to translate and accumulate in an ultrasound field. This acoustic response of the red blood cells has been attributed to sonophores, gas pockets that are formed under the influence of a sound field in the inner-membrane leaflets of biological cells. In this paper, we propose a simpler model: that of the compressible membrane. We derive the spatio-temporal cell dynamics for a spherically symmetric single cell, whilst regarding the cell bilayer membrane as two monolayer Newtonian viscous liquids, separated by a thin gas void. When applying the newly-derived equations to a red blood cell, it is observed that the void inside the bilayer expands to multiples of its original thickness, even at clinically safe acoustic pressure amplitudes. For causing permanent cell rupture during expansion, however, the acoustic pressure amplitudes needed would have to surpass the inertial cavitation threshold by a factor 10. Given the incompressibility of the inner monolayer, the radial oscillations of a cell are governed by the same set of equations as those of a forced antibubble. Evidently, these equations must hold for liposomes under sonication, as well.
Źródło:
Archives of Acoustics; 2017, 42, 1; 121-126
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D morphological reconstruction of the red blood cell based on two phase images
Autorzy:
Wang, Y
Li, Z
Ji, Y
Xu, Y
Bu, M
Powiązania:
https://bibliotekanauki.pl/articles/174332.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
phase imaging
red blood cell
3D morphological reconstruction
maximum entropy
Opis:
As an important component of blood cells, the red blood cell plays a vital role in many diseases such as malaria and so on. Although quantitative phase imaging techniques can be used for homogeneous cellular thickness distribution to obtain ideal results, they cannot achieve 3D morphological distribution. In this paper, a new method is presented to get a 3D morphology image of red blood cell. With this method, only two cellular quantitative phase images obtained from two orthogonal directions are needed as original information. By using the grid method, the sample is divided into many small phase cubes, and then we take a layer’s cubes into calculation so that the 3D problem could be transformed into a 2D problem to elaborate. Then it can be applied to the tomographic imaging combined with the maximum entropy method according to the two orthogonal phase images. This method has been proved by a simulation of red blood cell. The results show that cellular morphological distribution can be achieved in detail very well just based on only two orthogonal phase images.
Źródło:
Optica Applicata; 2015, 45, 2; 173-182
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena oporności osmotycznej krwinek czerwonych jako dodatkowa metoda oceny biozgodności biomateriałów z krwią
Evaluation of red blood cell osmotic resistance as an additional method for assessing the blood biocompatibility of biomaterials
Autorzy:
Janus, A.
Pielka, S.
Powiązania:
https://bibliotekanauki.pl/articles/284518.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomateriały
biozgodność
oporność osmotyczna krwinek czerwonych
biomaterials
biocompatibility
red blood cell osmotic resistance
Źródło:
Engineering of Biomaterials; 2010, 13, no. 99-101; 26-28
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Protein Extract of Mangifera indica Pollen on the Erythrocytes (Red Blood Cell) of Albino Rats
Autorzy:
Ezebo, R. O.
Omumuabuike, J. N.
Esimai, B. G.
Ilouno, E. E.
Obieze, O. U.
Obienyem, J. N.
Uba, C. A.
Powiązania:
https://bibliotekanauki.pl/articles/1031453.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Albino Rat
Duncan’s New Multiple Range Test
Erythrocytes
Mangifera indica
Pollen
Protein extract
red blood cell
Opis:
This study was carried out to show the effect of the protein extract of Mangifera indica on the red blood cell (erythrocytes) of albino rats. The Mangifera protein was extracted using 500ml of 0.02m (20mM) phosphate- buffered saline (PBS), at pH 7.4, in a large beaker (stirred with a magnetic stirrer for 3 hours at room temperature). The crude extract was saturated to 60% by adding solid ammonium sulphate under constant gentle attiring, and then stored in a refrigerator for 6 hours. Sixteen male albino rats obtained from animal house in Faculty of Biological Science, University of Nigeria Nsukka was used for the study. They were divided into two groups of eight. One group was labeled the experimental group and the other control. The extract was administered to the experimental rats intra nasally for a period of seven (7) days. Data were expressed as mean ± standard error. Means were separated using Duncan’s New Multiple Range Test (DNMRT). Blood samples were collected via the orbital plexus of rats to determine the effect of the extract on red blood cell (erythrocytes). The present study demonstrated that the extracted pollen of Mangifera indica had no allergic effect on ratsand so would need to be further investigated.
Źródło:
World News of Natural Sciences; 2021, 36; 114-124
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

    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