High Stability Developer For Medical X-Ray Processing

1985 ◽  
Author(s):  
Peter Wuelfing, Jr.
Keyword(s):  
High Stability ◽  
X Ray

High-Stability Flexible X-ray Detectors Based on Lead-Free Halide Perovskite Cs2TeI6 Films

2021 ◽  
Author(s):  
Jun Guo ◽  
Yadong Xu ◽  
Wenhui Yang ◽  
Bao Xiao ◽  
Qihao Sun ◽  
...  
Keyword(s):  
High Stability ◽  
Lead Free ◽  
X Ray ◽  
Halide Perovskite

scholarly journals Automated Dental Identification with Lowest Cost Path-Based Teeth and Jaw Separation

2016 ◽  
Vol 22 (2) ◽  
pp. 44-56 ◽  
Author(s):  
Jan-Vidar Ølberg ◽  
Morten Goodwin
Keyword(s):  
High Stability ◽  
Distance Measure ◽  
State Of The Art ◽  
Test Set ◽  
X Ray ◽  
Dental Identification ◽  
Verification Process ◽  
Stability And Accuracy ◽  
New System ◽  
Dental Work

Abstract Teeth are some of the most resilient tissues of the human body. Because of their placement, teeth often yield intact indicators even when other metrics, such as finger prints and DNA, are missing. Forensics on dental identification is now mostly manual work which is time and resource intensive. Systems for automated human identification from dental X-ray images have the potential to greatly reduce the necessary efforts spent on dental identification, but it requires a system with high stability and accuracy so that the results can be trusted. This paper proposes a new system for automated dental X-ray identification. The scheme extracts tooth and dental work contours from the X-ray images and uses the Hausdorff-distance measure for ranking persons. This combination of state-of-the-art approaches with a novel lowest cost path-based method for separating a dental X-ray image into individual teeth, is able to achieve comparable and better results than what is available in the literature. The proposed scheme is fully functional and is used to accurately identify people within a real dental database. The system is able to perfectly separate 88.7% of the teeth in the test set. Further, in the verification process, the system ranks the correct person in top in 86% of the cases, and among the top five in an astonishing 94% of the cases. The approach has compelling potential to significantly reduce the time spent on dental identification.

scholarly journals A high-precision instrument for mapping of rotational errors in rotary stages

2014 ◽  
Vol 21 (6) ◽  
pp. 1367-1369 ◽  
Author(s):  
Weihe Xu ◽  
Kenneth Lauer ◽  
Yong Chu ◽  
Evgeny Nazaretski
Keyword(s):  
High Precision ◽  
High Stability ◽  
Three Dimensional ◽  
Capacitive Sensors ◽  
Precision Instrument ◽  
X Ray ◽  
Full Characterization ◽  
Simultaneous Measurements ◽  
Radial And Axial Displacements

A rotational stage is a key component of every X-ray instrument capable of providing tomographic or diffraction measurements. To perform accurate three-dimensional reconstructions, runout errors due to imperfect rotation (e.g.circle of confusion) must be quantified and corrected. A dedicated instrument capable of full characterization and circle of confusion mapping in rotary stages down to the sub-10 nm level has been developed. A high-stability design, with an array of five capacitive sensors, allows simultaneous measurements of wobble, radial and axial displacements. The developed instrument has been used for characterization of two mechanical stages which are part of an X-ray microscope.

Synthesis and Characterization the Intercalation Compound of SnS2-Ethylenediamine by Hydrothermal Reaction

2012 ◽  
Vol 512-515 ◽  
pp. 215-218 ◽  
Author(s):  
Qing Lv ◽  
Cai Xia Li ◽  
Dan Yu Jiang ◽  
Qiang Li
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Powder Diffraction ◽  
High Stability ◽  
Hydrothermal Reaction ◽  
Intercalation Compound ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Light Yellow ◽  
Transmission Electron

The intercalation of ethylenediamine (en) into SnS2 was synthesised by hydrothermal reaction at the temperature of 180 °C.And then dispersed the intercalation compounds in N, N-dimethylformamide (DMF) by stirring 48h,getting a light yellow sol ,with the nature of uniform ,transparent and stable.Analysised the structural of the product by means of X-ray powder diffraction (XRD) .The morphology of sol was characterized by using of transmission electron microscopy (TEM).The UV-Vis spectrophotometer was utilized for the absorbance of the colloidal.The results show that en has been successfully inserted into the layer of tin disulphide,and the target products is of high purity and good crystal.The sol is of high stability and homogeneity, and have the strongest absorption at the Wavelength of 270nm.

X-Ray Microbeam Studies of Electromigration

1999 ◽  
Vol 563 ◽  
Author(s):  
G. S. Cargill III ◽  
A. C. Ho ◽  
K. J. Hwang ◽  
H. K. Kao ◽  
P.-C. Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Real Time ◽  
High Stability ◽  
Polycrystalline Metal ◽  
Optical Elements ◽  
High Brightness ◽  
X Ray ◽  
Composition Changes ◽  
Stability Energy ◽  
Made In

AbstractThe interplay between stress and electromigration has been recognized since I. A. Blech et al. used x-ray topography in 1976 to demonstrate that stress gradients developed during electromigration. Availability of high brightness synchrotron x-ray sources, high stability energy dispersive detectors, high resolution area detectors, and pinholes, capillaries and other optical elements for forming x-ray microbeams, has made possible more quantitative, real time measurements of strains and composition changes which develop in polycrystalline metal conductor lines during electromigration. This paper describes advances made in this area, implications of results which have been obtained, and prospects for further progress.

An unusually thermally stable magnetite from a niobium mine in Brazil

Clay Minerals ◽  
2012 ◽  
Vol 47 (1) ◽  
pp. 69-79 ◽  
Author(s):  
A. C. Silva ◽  
M. C. Pereira ◽  
L. C. A. Oliveira ◽  
L. C. D. Cavalcante ◽  
J. D. Fabris ◽  
...  
Keyword(s):  
High Stability ◽  
Room Temperature ◽  
Direct Conversion ◽  
High Thermal Stability ◽  
Chemical Analyses ◽  
X Ray ◽  
Isomorphous Replacement ◽  
Magnetite Content ◽  
Temperature Programmed ◽  
Oxidized Products

AbstractMagnetite-rich waste from a niobium mine near Araxá, State of Minas Gerais, Brazil, was heated to 500°C and 1000°C under an O2atmosphere. The original waste and its oxidized products were characterized by energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffraction (XRD), room-temperature57Fe Mössbauer spectroscopy, thermogravimetric analysis (TG) and temperature-programmed reduction (TPR).Semiquantitative analyses by EDS and quantitative chemical analyses showed the waste to be constituted primarily of Fe with minor amounts of Ti, Ba, Al, Si, Nb, Mn, S and P. Mössbauer and XRD showed the waste to consist predominantly of magnetite and hematite. The magnetite content decreases when the temperature increases due to its direct conversion to hematite. However, at 500°C only 10 wt.% of original magnetite was converted to hematite, confirming the high stability of this magnetite, which could still be detected at 1000°C. The TG profile shows no significant weight gain on heating, indicating a high stability of the magnetite. The TPR profiles show that the hematite in the waste is sintered after treatment at 1000°C and the reduction peaks are consequently shifted to higher temperatures. This high thermal stability is attributed to a moderate isomorphous replacement of Fe by other cations present in the Nb mining waste.

X-ray investigations into silica/silver nanocomposite

2017 ◽  
Vol 32 (S1) ◽  
pp. S82-S86 ◽  
Author(s):  
K. Dudek ◽  
J. Podwórny ◽  
M. Dulski ◽  
A. Nowak ◽  
J. Peszke
Keyword(s):  
High Temperature ◽  
Diffraction Data ◽  
High Stability ◽  
Amorphous Matrix ◽  
Silver Ions ◽  
Synthesis Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Silver Nanocomposite ◽  
Cubic Structure

X-ray diffraction data revealed that the initial SiO2/Ag nanocomposite, manufactured in a chemical synthesis process, is mainly composed of silica in amorphous phase (95.5 wt.%), crystalline Ag with a cubic structure (Fm-3m) and cristobalite (SiO2) with a tetragonal structure (P41212) in the amount of 4.2 and 0.3 wt.%, respectively. High-temperature diffraction data revealed high stability of the SiO2/Ag composite up to 1000 °C. High-temperature X-ray diffraction measurements revealed phase cristallization temperatures of silica at 1060 °C for cristobalite and 1080 °C for tridymite as well as temperature of silver evaporation starting from the composite (ca. 1000 °C). Infrared spectroscopy data confirmed the presence of amorphous matrix with embedded silver ions and crystalline compounds in the form of cristobalite and tridymite without silver after thermal treatment.

scholarly journals Indirect Manganese Removal byStenotrophomonassp. andLysinibacillussp. Isolated from Brazilian Mine Water

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Natália Rocha Barboza ◽  
Soraya Sander Amorim ◽  
Pricila Almeida Santos ◽  
Flávia Donária Reis ◽  
Mônica Mendes Cordeiro ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Mine Water ◽  
High Stability ◽  
Culture Medium ◽  
Bacterial Consortium ◽  
Bacterial Isolates ◽  
Electronic Microscopy ◽  
Mining Operations ◽  
X Ray ◽  
Manganese Removal

Manganese is a contaminant in the wastewaters produced by Brazilian mining operations, and the removal of the metal is notoriously difficult because of the high stability of the Mn(II) ion in aqueous solutions. To explore a biological approach for removing excessive amounts of aqueous Mn(II), we investigated the potential of Mn(II) oxidation by both consortium and bacterial isolates from a Brazilian manganese mine. A bacterial consortium was able to remove 99.7% of the Mn(II). A phylogenetic analysis of isolates demonstrated that the predominant microorganisms were members ofStenotrophomonas,Bacillus, andLysinibacillusgenera. Mn(II) removal rates between 58.5% and 70.9% were observed forBacillussp. andStenotrophomonassp. while theLysinibacillusisolate 13P removes 82.7%. The catalytic oxidation of Mn(II) mediated by multicopper oxidase was not properly detected; however, in all of the experiments, a significant increase in the pH of the culture medium was detected. No aggregates inside the cells grown for a week were found by electronic microscopy. Nevertheless, an energy-dispersive X-ray spectroscopy of the isolates revealed the presence of manganese inStenotrophomonassp. andLysinibacillussp. grown in K medium. These results suggest that members ofStenotrophomonasandLysinibacillusgenera were able to remove Mn(II) by a nonenzymatic pathway.

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