scholarly journals Deployment of a double scatter system for directional detection of background neutron radiation.

2020 ◽  
Author(s):  
Adam Glick ◽  
Erik Brubaker ◽  
Belkis Cabrera-Palmer ◽  
Mark Gerling ◽  
Brian Quiter ◽  
...  
Keyword(s):  
Neutron Radiation ◽  
Directional Detection ◽  
Scatter System

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

Observations of neutron radiation environment during Odyssey cruise to Mars

2021 ◽  
Vol 29 ◽  
pp. 53-62
Author(s):  
M.L. Litvak ◽  
I.G. Mitrofanov ◽  
A.B. Sanin ◽  
B. Bakhtin ◽  
D.V. Golovin ◽  
...  
Keyword(s):  
Neutron Radiation ◽  
Radiation Environment

scholarly journals Miniaturization of Respiratory Measurement System in Artificial Ventilator for Small Animal Experiments to Reduce Dead Space and Its Application to Lung Elasticity Evaluation

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5123
Author(s):  
Homare Yoshida ◽  
Yoshihiro Hasegawa ◽  
Miyoko Matsushima ◽  
Tomoshi Sugiyama ◽  
Tsutomu Kawabe ◽  
...  
Keyword(s):  
Respiratory System ◽  
Measurement System ◽  
Dead Space ◽  
Animal Experiments ◽  
Small Animal ◽  
Silicone Resin ◽  
Directional Detection ◽  
Mems Technology ◽  
Respiratory Measurement ◽  
Static Conditions

A respiratory measurement system composed of pressure and airflow sensors was introduced to precisely control the respiratory condition during animal experiments. The flow sensor was a hot-wire thermal airflow meter with a directional detection and airflow temperature change compensation function based on MEMS technology, and the pressure sensor was a commercially available one also produced by MEMS. The artificial dead space in the system was minimized to the value of 0.11 mL by integrating the two sensors on the same plate (26.0 mm × 15.0 mm). A balloon made of a silicone resin with a hardness of A30 was utilized as the simulated lung system and applied to the elasticity evaluation of the respiratory system in a living rat. The inside of the respiratory system was normally pressurized without damage, and we confirmed that the developed system was able to evaluate the elasticity of the lung tissue in the rat by using the pressure value obtained at the quasi-static conditions in the case of the ventilation in the animal experiments.

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