Features of the practical application of microfocus x-ray tomograph in biomedical engineering

2019 ◽  
Author(s):  
A. V. Obodovskiy ◽  
V. B. Bessonov ◽  
I. A. Larionov
Keyword(s):  
Biomedical Engineering ◽  
Practical Application ◽  
X Ray

scholarly journals X-ray microanalysis of powders, obtained by electroerosion dispersion of the alloy W-Ni-Fe

2019 ◽  
Vol 298 ◽  
pp. 00125 ◽  
Author(s):  
R.A. Latypov ◽  
E.V. Ageeva ◽  
G.R. Latypova
Keyword(s):  
Elemental Composition ◽  
Practical Application ◽  
Electrical Parameters ◽  
X Ray ◽  
Electroerosion Dispersion

The results of X-ray microanalysis of powders, obtained by electroerosive dispersion of the W-Ni-Fe alloy with various electrical parameters of the device, are presented. Conducted researches, aimed at establishing the elemental composition of powders, obtained by electroerosion dispersion of the alloy W-Ni-Fe, will determine the most rational area of their practical application.

scholarly journals β-Cyclodextrin Modified Poly(Acrylonitrule-co-Acrylic Acid) Hydrogel for Thorium(IV) Adsorption

Polymers ◽  
2017 ◽  
Vol 9 (6) ◽  
pp. 201 ◽  
Author(s):  
Guojian Duan ◽  
Qiangqiang Zhong ◽  
Lei Bi ◽  
Liu Yang ◽  
Tonghuan Liu ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Contact Time ◽  
Ph Value ◽  
Water System ◽  
Maximum Adsorption Capacity ◽  
Practical Application ◽  
X Ray Diffraction ◽  
Liquid Ratio ◽  
X Ray ◽  
Solid Liquid

In this report, the β-CD(AN-co-AA) hydrogel was used to remove the thorium(IV) [Th(IV)] from the water system, and the new adsorbent was characterized through Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The influences of contact time, pH value, ionic strength, solid-liquid ratio, initial Th(IV) concentration, and temperature on Th(IV) adsorption onto the functional hydrogel were researched. The results showed that the experimental data followed the Langmuir isotherm and the maximum adsorption capacity (qmax) for Th(IV) was 692 mg/g at pH 2.95, which approached the calculated (qe) 682 mg/g. The desorption capacity of Th(IV) in different HNO3 concentrations ranging from 0.005 to 0.5 M was also studied, and the percentage of the maximum desorption was 86.85% in the condition of 0.09 M HNO3. The selectivity of β-CD(AN-co-AA) hydrogel was also be studied, the results indicated that this material retained the good adsorption capacity to Th(IV) even when the Ca2+, Mg2+, or Pb2+ existed in the system. The findings indicate that β-CD(AN-co-AA) can be used as a new candidate for the enrichment and separation of Th(IV), or its analogue actinides, from large-volume solution in practical application.

Contribution of Disulfide Bonds and Calcium to Molluscan Hemocyanin Stability

2004 ◽  
Vol 59 (3-4) ◽  
pp. 281-287 ◽  
Author(s):  
Dessislava N. Georgieva ◽  
Nicolay Genov ◽  
Markus Perbandt ◽  
Wolfgang Voelter ◽  
Christian Betzel
Keyword(s):  
Free Energy ◽  
Calcium Ions ◽  
Disulfide Bonds ◽  
Functional Unit ◽  
Helical Structure ◽  
Practical Application ◽  
Destructive Effect ◽  
X Ray ◽  
Respiratory Proteins ◽  
The Stability

Disulfide bonds and calcium ions contribute significantly to the stability of the hemocyanin from the mollusc Rapana thomasiana grosse (gastropod). An extremely powerful protective effect of Ca2+ at a concentration of 100 mᴍ (100% protection) against the destructive effect of reductants like dithiothreitol was observed. This is important for the practical application of molluscan hemocyanins in experimental biochemistry, immunology and medicine. The reduction of the disulfide bonds in the Rapana hemocyanin leads to a 20% decrease of the α-helical structure. The S-S bonds contribute significantly to the free energy of stabilization in water increasing ⊿GD H2O by 6.9 kJ mol-1. The data are related to the X-ray model of the Rapana hemocyanin functional unit RtH2e. The results of this study can be of common validity for related respiratory proteins because the cysteine residues are conserved in all sequences of molluscan hemocyanins published so far.

scholarly journals A Practical Application of X-Ray Spectroscopy in Ti-Al-N and Cr-Al-N Thin Films

10.5772/29640 ◽  
2012 ◽  
Author(s):  
Leonid Ipaz ◽  
William Aperador ◽  
Julio Caicedo ◽  
Joan Esteve ◽  
Gustavo Zambrano
Keyword(s):  
Thin Films ◽  
Practical Application ◽  
X Ray

scholarly journals The Reliability Improvement of Cu Interconnection by the Control of Crystallizedα-Ta/TaNxDiffusion Barrier

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Wei-Lin Wang ◽  
Chia-Ti Wang ◽  
Wei-Chun Chen ◽  
Kuo-Tzu Peng ◽  
Ming-Hsin Yeh ◽  
...  
Keyword(s):  
Diffusion Barrier ◽  
Practical Application ◽  
X Ray Diffraction ◽  
Cross Sectional ◽  
X Ray ◽  
Reliability Improvement ◽  
N Concentration ◽  
Transmission Electron ◽  
Diffraction Patterns ◽  
Interconnection Structure

Ta/TaN bilayers have been deposited by a commercial self-ionized plasma (SIP) system. The microstructures of Ta/TaN bilayers have been systematically characterized by X-ray diffraction patterns and cross-sectional transmission electron microscopy. TaN films deposited by SIP system are amorphous. The crystalline behavior of Ta film can be controlled by the N concentration of underlying TaN film. On amorphous TaN film with low N concentration, overdeposited Ta film is the mixture ofα- andβ-phases with amorphous-like structure. Increasing the N concentration of amorphous TaN underlayer successfully leads upper Ta film to form pureα-phase. For the practical application, the electrical property and reliability of Cu interconnection structure have been investigated by utilizing various types of Ta/TaN diffusion barrier. The diffusion barrier fabricated by the combination of crystallizedα-Ta and TaN with high N concentration efficiently reduces the KRc and improves the EM resistance of Cu interconnection structure.

Synthesis, Structural and Dielectric Properties of Pure and Ni Substituted Bismuth Ferrite

2014 ◽  
Vol 938 ◽  
pp. 140-144 ◽  
Author(s):  
S. Blessi ◽  
S. Vijayalakshmi ◽  
S. Pauline
Keyword(s):  
Dielectric Properties ◽  
Hydrothermal Method ◽  
Bismuth Ferrite ◽  
Synthesis Method ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Practical Application ◽  
X Ray ◽  
Wide Range ◽  
Good Agreement

Multiferroics have been known as materials exhibiting both ferroelectric and ferromagnetic properties in same phase, they have interesting physical properties as well as possibility of practical application in some new memories, spintronics and sensor devices. The present work reports the fabrication of pure and Nickel substituted Bismuth Ferrite by simple hydrothermal method at 180oC for 11 hours. The structural study was carried out using X-ray powder diffraction (XRD), and the Dielectric properties were investigated over a wide range of frequency and temperature. The image of SEM is in good agreement with the XRD analysis. The synthesis method is simple and cost effective. KEYWORDS: Multiferroics; Dielectric loss; Hydrothermal method; XRD.

scholarly journals Thermoluminescence Response of AlN+Y2O3 Ceramics to Sunlight and X-Ray Irradiation

2021 ◽  
Vol 58 (1) ◽  
pp. 3-14
Author(s):  
J. Cipa ◽  
L. Trinkler ◽  
B. Berzina
Keyword(s):  
Emission Spectrum ◽  
Glow Curve ◽  
Uv Light ◽  
Emission Spectra ◽  
Wide Band ◽  
Practical Application ◽  
Irradiation Effects ◽  
Wide Band Gap ◽  
Sunlight Irradiation ◽  
X Ray

AbstractAlN is a wide band gap material with promising properties for dosimetric applications, especially in UV dosimetry. In the present research, the thermoluminescence method is used in order to better understand sunlight and X-ray irradiation effects on yttria doped AlN ceramics. In general, the TL response is characterised by a broad TL peak with maxima around 400–450 K and a TL emission spectrum with UV (400 nm), Blue (480 nm) and Red (600 nm) bands. Compared to the X-ray irradiation, sunlight irradiation creates a wider TL glow curve peak with a maximum shifted to higher temperatures by 50 K.Furthermore, in the TL emission spectra of AlN irradiated with sunlight the UV band is suppressed. The reasons of the TL peculiarities under two types of irradiation are discussed. Practical application of AlN ceramics as material for UV light TL dosimetry and, in particular, for sunlight dosimetry is estimated.

scholarly journals PROPERTIES SUCH PRACTICAL APPLICATION IN MEDICINE OF X-RAY NO SCRE〓N FILMS

1959 ◽  
Vol 14 (4) ◽  
pp. 237-243
Author(s):  
MINORU NAKAMURA ◽  
MAKOTO KUSUSE ◽  
TAKEO TAGUCHI
Keyword(s):  
Practical Application ◽  
X Ray
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