High resolution magnetic susceptibility imaging of geological thin sections: Pilot study of a pyroclastic sample from the Bishop Tuff, California, U.S.A.

1992 ◽  
Vol 19 (21) ◽  
pp. 2139-2142 ◽  
Author(s):  
I. M. Thomas ◽  
T. C. Moyer ◽  
J. P. Wikswo
Keyword(s):  
Magnetic Susceptibility ◽  
Pilot Study ◽  
High Resolution ◽  
Bishop Tuff ◽  
Thin Sections

The High Resolution Appearance of Biological Substrates

1969 ◽  
Vol 27 ◽  
pp. 416-417
Author(s):  
Glen B. Haydon
Keyword(s):  
High Resolution ◽  
Phase Image ◽  
Biological Structure ◽  
Electron Microscopic ◽  
Thin Sections ◽  
Resolution Electron ◽  
Discrete Structures ◽  
Large Phase ◽  
Biological Substrates ◽  
High Resolution Electron Micrographs

High resolution electron microscopic study of negatively stained macromolecules and thin sections of tissue embedded in a variety of media are difficult to interpret because of the superimposed phase image granularity. Although all of the information concerning the biological structure of interest may be present in a defocused electron micrograph, the high contrast of large phase image granules produced by the substrate makes it impossible to distinguish the phase ‘points’ from discrete structures of the same dimensions. Theory predicts the findings; however, it does not allow an appreciation of the actual appearance of the image under various conditions. Therefore, though perhaps trivial, training of the cheapest computer produced by mass labor has been undertaken in order to learn to appreciate the factors which affect the appearance of the background in high resolution electron micrographs.

The ultrastructure of the double membrane-bound bodies and endoplasmic reticulum in serial sections of wheat spot mosaic-affected wheat plants

1990 ◽  
Vol 48 (3) ◽  
pp. 694-695
Author(s):  
M. H. Chen ◽  
C. Hiruki
Keyword(s):  
Endoplasmic Reticulum ◽  
High Resolution ◽  
Membrane Structure ◽  
Mosaic Disease ◽  
Serial Sections ◽  
Thin Sections ◽  
Double Membrane ◽  
Southern Alberta ◽  
Membrane Bound ◽  
Scanning Em

Wheat spot mosaic disease was first discovered in southern Alberta, Canada, in 1956. A hitherto unidentified disease-causing agent, transmitted by the eriophyid mite, caused chlorosis, stunting and finally severe necrosis resulting in the death of the affected plants. Double membrane-bound bodies (DMBB), 0.1-0.2 μm in diameter were found to be associated with the disease.Young tissues of leaf and root from 4-wk-old infected wheat plants were fixed, dehydrated, and embedded in Spurr’s resin. Serial sections were collected on slot copper grids and stained. The thin sections were then examined with a Hitachi H-7000 TEM at 75 kV. The membrane structure of the DMBBs was studied by numbering them individually and tracing along the sections to see any physical connection with endoplasmic reticulum (ER) membranes. For high resolution scanning EM, a modification of Tanaka’s method was used. The specimens were examined with a Hitachi Model S-570 SEM in its high resolution mode at 20 kV.

Pilot Test of the Trisensor, A New Generation Sonar Sensory Aid

1983 ◽  
Vol 77 (9) ◽  
pp. 446-449 ◽  
Author(s):  
Randolph D. Easton ◽  
Richard M. Jackson
Keyword(s):  
Pilot Study ◽  
High Resolution ◽  
Object Localization ◽  
Pilot Test ◽  
Angle Error ◽  
Space Object ◽  
Near Space ◽  
Side Channels ◽  
Center Channel ◽  
New Generation

This report describes the results of a pilot study undertaken to assess systematically the usability of the Trisensor in near space, object localization tasks. In general, findings support the contention that the high resolution, center channel reduces the degree of angle error when reaching for targets in near space. It was also found that the degree of angle error associated with the binaural side channels could be reduced if targets were moved from the periphery into place during localization.

scholarly journals Documenting archaeological thin sections in high‐resolution: A comparison of methods and discussion of applications

2018 ◽  
Vol 34 (1) ◽  
pp. 100-114 ◽  
Author(s):  
Magnus M. Haaland ◽  
Matthias Czechowski ◽  
Frank Carpentier ◽  
Mathieu Lejay ◽  
Bruno Vandermeulen
Keyword(s):  
High Resolution ◽  
Comparison Of Methods ◽  
Thin Sections

scholarly journals PILOT RESULTS OF STUDYING CARDIAC MICROPOTENTIALS IN PATIENTS WITH MYOCARDIAL INFARCTION AND CARDIOGENIC SHOCK

2019 ◽  
Vol 33 (4) ◽  
pp. 103-110 ◽  
Author(s):  
I. V. Maximov ◽  
D. K. Avdeeva ◽  
M. L. Ivanov ◽  
I. A. Zimin ◽  
M. M. Yuzhakov ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Pilot Study ◽  
High Resolution ◽  
Cardiogenic Shock ◽  
Myocardial Revascularization ◽  
Left Ventricular ◽  
National Guidelines ◽  
Software Complex ◽  
Heart Rhythm Disorders ◽  
Life Threatening

Aim. To study cardiac micropotentials registered by the hardware and software complex with nanosensors in patients with myocardial infarction for the early detection of life-threatening conditions.Materials and Methods. The pilot study included 29 patients with acute myocardial infarction who had life-threatening complications such as heart rhythm disorders, the development of acute left ventricular failure, or clinical death prehospitally or at admission to the coronary care unit. The diagnosis of myocardial infarction was established and treatment was carried out according to the national guidelines for the management of patients with myocardial infarction, including the methods of myocardial revascularization.Results. During hospitalization, eight patients developed cardiogenic shock and died. 21 patients survived and were included in the comparison group. At admission, all patients underwent high-resolution electrocardiography using the originally developed hardware and software complex with nanosensors. The micropotentials on the ST segment of the electrocardiogram were recorded for 30 s in three leads on-line. The numbers of micropotentials in the studied groups were analyzed. The analysis of the number of micropotentials within certain ranges of amplitude and duration registered on high-resolution electrocardiogram showed a decrease of the micropotential number in group of patients who died from cardiogenic shock compared with the group of survived patients.Conclusions. The results of this pilot study of cardiac micropotentials are preliminary and require further accumulation of data as well as a search for new criteria for diagnostics, prognosis, and evaluation of the treatment efficacy in patients with myocardial infarction.

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