Proton-Induced X-ray Emission Analysis of Human Autopsy Tissues

1977 ◽  
pp. 403-410 ◽  
Author(s):  
R. D. Lear ◽  
H. A. Van Rinsvelt ◽  
W. R. Adams
Keyword(s):  
Emission Analysis ◽  
X Ray ◽  
Autopsy Tissues ◽  
Human Autopsy

Proton-Induced X-ray Emission Analysis of Human Autopsy Tissues

1976 ◽  
Vol 20 ◽  
pp. 403-410
Author(s):  
R. D. Lear ◽  
H. A. Van Rinsvelt ◽  
W. S. Adams
Keyword(s):  
Trace Element Analysis ◽  
Human Kidney ◽  
Essential Elements ◽  
Element Analysis ◽  
Emission Analysis ◽  
University Of Florida ◽  
X Ray ◽  
Quantitative Measurements ◽  
Autopsy Tissues ◽  
The University

The 3.8 MeV proton beam from the University of Florida Van de Graaff accelerator has been used to perform trace element analysis of approximately 1200 samples (mostly from autopsies) of human tissues by proton-induced X-ray emission analysis (PIXE). Fifteen different organs and a variety of diseases have been studied. Preliminary data are presented indicating the variations of various elements in human kidney as a function of age. Analysis of samples from infants also indicate essential and non-essential elements in human kidney. On the average twelve trace elements (with atomic number equal to or larger than nineteen) are observed in each organ. Quantitative measurements have been made on several elements including K, Ca, Mn, Fe, Cu, Zn, Pb, Br, Rb, Sr, Cd, and Ba.

Proton induced x-ray emission analysis of Pima Indian autopsy tissues

1979 ◽  
Vol 51 (8) ◽  
pp. 1187-1194 ◽  
Author(s):  
N. F. Mangelson ◽  
M. W. Hill ◽  
K. K. Nielson ◽  
D. J. Eatough ◽  
J. J. Christensen ◽  
...  
Keyword(s):  
Emission Analysis ◽  
X Ray ◽  
Autopsy Tissues

Calibration and Correction Methods for Quantitative Proton-Induced X-Ray Emission Analysis of Autopsy Tissues

1975 ◽  
Vol 19 ◽  
pp. 511-520 ◽  
Author(s):  
K. K. Nielson ◽  
M. W. Hill ◽  
N. F. Mangelson
Keyword(s):  
Energy Loss ◽  
Cross Sections ◽  
Proton Energy ◽  
Standard Reference Materials ◽  
Thin Sample ◽  
Emission Analysis ◽  
X Ray ◽  
Autopsy Tissues ◽  
Filter Thickness ◽  
X Ray Absorption

Methods have been developed for autopsy tissue analysis using a proton-induced X-ray emission (PIXE) system optimized for thin sample analysis. The system uses 2 MeV protons, thus limiting sample thickness to several milligrams per square centimeter. Calibration was accomplished with standard solutions spotted onto Nuclepore filters, which were subsequently irradiated in a uniform proton flux. X-ray yields measured with a Si (Li) detector were corrected for proton energy loss in the filter matrix as well as X-ray attenuation. Corrections for proton energy loss were determined from empirical parameters relating proton energy to X-ray cross sections. Typical filter thickness and penetration of the sample solution into the filter matrix were measured allowing calculation of proton energy attenuation and X-ray absorption corrections. The method was used in routine analyses for sixteen elements in seven types of human tissue. Accuracy was evaluated with standard reference materials and atomic absorption analyses.

Cadmium Concentration in Human Autopsy Tissues

2017 ◽  
Vol 179 (2) ◽  
pp. 172-177 ◽  
Author(s):  
Teresa Lech ◽  
Józefa K. Sadlik
Keyword(s):  
Cadmium Concentration ◽  
Autopsy Tissues ◽  
Human Autopsy

Ionic regulation and buoyancy in some planktonic organisms

1993 ◽  
Vol 73 (1) ◽  
pp. 15-23 ◽  
Author(s):  
C. Newton ◽  
W. T. W. Potts
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Body ◽  
Coelomic Fluid ◽  
Ionic Regulation ◽  
High Concentration ◽  
Emission Analysis ◽  
X Ray ◽  
Scanning Electron ◽  
Gastrovascular System

Magnesium/chlorine and sulphur/chlorine ratios have been measured in the body fluids of some planktonic organisms by x-ray emission analysis of frozen hydrated specimens in a scanning electron microscope. Homarus vulgaris (Anthropoda: Decapoda) larvae excluded Mg2+ and SO42-ions from the haemolymph, but to a lesser extent than does the adult lobster. Bipinnaria larvae of Asterias (Echinodermata) excluded Mg2+ and SO42-ions from the coelomic fluid. Obelia medusae excluded Mg2+ and SO42-ions from the mesogloea but concentrate them in the gastrovascular system. The high concentration of sulphate in the gastrovascular fluid of medusae has been confirmed by rhodizonate titration in Cyanea and Rhizostoma jellyfish. Some implications of magnesium and sulphate regulation are discussed.

scholarly journals In-air microparticle induced X-ray emission analysis of particles in interstitial pneumonia lung tissue obtained by transbronchial biopsy

2011 ◽  
Vol 49 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Yasuo Shimizu ◽  
Shinichi Matsuzaki ◽  
Takahiro Satoh ◽  
Masashi Koka ◽  
Akihito Yokoyama ◽  
...  
Keyword(s):  
Interstitial Pneumonia ◽  
Lung Tissue ◽  
Transbronchial Biopsy ◽  
Emission Analysis ◽  
X Ray

scholarly journals The Assessment of the Condition of Knee Joint Surfaces with Acoustic Emission Analysis

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6495
Author(s):  
Bartłomiej Sawaryn ◽  
Natalia Piaseczna ◽  
Szymon Sieciński ◽  
Rafał Doniec ◽  
Konrad Duraj ◽  
...  
Keyword(s):  
Knee Joint ◽  
Knee Injury ◽  
Knee Joints ◽  
Resonance Imaging ◽  
Emission Analysis ◽  
X Ray ◽  
Joint Surfaces ◽  
Magnetic Resonance Imaging Mri ◽  
Leg Movements ◽  
Acoustic Emission Analysis

The knee joint, being the largest joint in the human body, is responsible for a great percentage of leg movements. The diagnosis of the state of knee joints is usually based on X-ray scan, ultrasound imaging, computerized tomography (CT), magnetic resonance imaging (MRI), or arthroscopy. In this study, we aimed to create an inexpensive, portable device for recording the sound produced by the knee joint, and a dedicated application for its analysis. During the study, we examined fourteen volunteers of different ages, including those who had a knee injury. The device effectively enables the recording of the sounds produced by the knee joint, and the spectral analysis used in the application proved its reliability in evaluating the knee joint condition.

scholarly journals Photoluminescence properties of ZrO2:Gd3+, ZrO2:Gd3+ – Dy3+ and ZrO2:Gd3+ – Yb3+ phosphors by Pechini method

2018 ◽  
Vol 36 (1) ◽  
pp. 157-161
Author(s):  
Esra Yildiz
Keyword(s):  
Powder Diffraction ◽  
Optical Materials ◽  
Pechini Method ◽  
Photoluminescence Properties ◽  
Emission Analysis ◽  
Lifetime Measurements ◽  
X Ray ◽  
Thermal Gravimetry ◽  
Potential Applications ◽  
Scanning Electron

AbstractZr0.99Gd0.01O2, Zr0.98Gd0.01Dy0.01O2 and Zr0.98Gd0.01Yb0.1O2 phosphors were synthesized by Pechini method at 1200 °C for 12 h in air. The phosphors were characterized by using X-ray powder diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG), scanning electron microscopy (SEM) and photoluminescence spectrofluorometer (PL). X-ray powder diffraction studies showed that the phosphors were crystallized as monoclinic and tetragonal multiphases. The particle size of the phosphors after heat treatment at 1200 °C was found to be of 200 nm to 250 nm. Luminescence studies on these phosphors have been carried out on the emission and excitation, along with lifetime measurements. The results of emission analysis indicate that the phosphors are expected to find potential applications as new optical materials.

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