Easily adaptable and scalable semiconductor THz pulse source

2021 ◽  
Author(s):  
G. Krizsan ◽  
Gy. Polonyi ◽  
N. M. Mbithi ◽  
Z. Tibai ◽  
L. Palfalvi ◽  
...  
Keyword(s):  
Pulse Source

Temporal pulse source generating far fields with sharp optical pulse

2021 ◽  
Vol 390 ◽  
pp. 127102
Author(s):  
Huilong Liu ◽  
Zonghua Hu ◽  
Zhenhua Du ◽  
Jing Xia ◽  
Aga He ◽  
...  
Keyword(s):  
Optical Pulse ◽  
Pulse Source ◽  
Far Fields ◽  
Temporal Pulse

scholarly journals The impedance analysis of small intestine fusion by pulse source

2020 ◽  
Vol 15 (1) ◽  
pp. 808-818
Author(s):  
Yifan Wang ◽  
Kefu Liu ◽  
Xiaowei Xiang ◽  
Caihui Zhu ◽  
Hao Wang
Keyword(s):  
Small Intestine ◽  
Pressure Gauge ◽  
Equivalent Circuit Model ◽  
Impedance Measurement ◽  
Impedance Analysis ◽  
Duty Ratio ◽  
Feedback Signal ◽  
Pulse Source ◽  
Compression Pressure ◽  
Output Time

AbstractThe radiofrequency-induced intestine fusion has been widely studied as an alternative for traditional suture in surgery, but fusion quality cannot be evaluated directly. Impedance measurement can evaluate fusion quality, but the relation between impedance and the fusion quality needs optimization for best results. The present study reports the optimum resistance of small intestine fusion. As the feedback signal, resistance was considered the indicator of the fusion completion for the device design of intestine fusion and an in-depth study of microstructure change. A self-design pulse source was used for the small intestine fusion with adjustable voltage, duty ratio, frequency and output time. A frequency of 440 kHz was set, whereas voltage, output time and compression pressure (CP) of the small intestine were independent variables. Different conditions of voltage, CP and time were investigated for achieving the highest burst pressure (BP) measured with a pressure gauge and a peristaltic pump. Each parameter of the equivalent circuit model was calculated by an experimental waveform. Hematoxylin–eosin staining of fusion samples was used for assessing the quality of fusion. The real-time current was measured and recorded during the fusion for the calculation of capacitance and resistance. The highest BP of 38.9 mmHg was achieved with a CP of 900 kPa, a voltage of 50 V and a time of 5 s. Finally, an optimum extracellular resistance range of 61.0–86.2 Ω was found as the optimum resistance for the end of fusion, thus indicating automatic fusion with the best fusion quality.

Concept of a New High-Flux Periodic-Pulse Source of Neutrons Based on Neptunium

Atomic Energy ◽  
2021 ◽  
Author(s):  
A. V. Lopatkin ◽  
I. T. Tret’yakov ◽  
N. V. Romanova ◽  
A. V. Goryachikh ◽  
N. D. Kokorin ◽  
...  
Keyword(s):  
High Flux ◽  
Pulse Source ◽  
Periodic Pulse

Pulse Source of Electrons Based on the Pyroeffect

2020 ◽  
Author(s):  
Leonid Orlikov ◽  
Xenia Mambetova ◽  
Sergej Arestov ◽  
Stanislav Shandarov ◽  
Nikolaj Burimov ◽  
...  
Keyword(s):  
Pulse Source

Heating of a Half-Space by a Moving Thermal Laser Pulse Source

2021 ◽  
Vol 42 (8) ◽  
pp. 1912-1919
Author(s):  
A. A. Orekhov ◽  
L. N. Rabinskiy ◽  
G. V. Fedotenkov ◽  
Thant Zin Hein
Keyword(s):  
Laser Pulse ◽  
Half Space ◽  
Pulse Source
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