Performance Characteristics according to the Change in Operating Pressure of the SMR Refrigerator

2021 ◽  
Vol 25 (6) ◽  
pp. 66-70
Author(s):  
Sung-Soo Park ◽  
Sang-Chan Park ◽  
Ji-Hoon Yoon ◽  
Sung-Hoon Seol ◽  
Chang-Hyo Son ◽  
...  
Keyword(s):  
Performance Characteristics ◽  
Operating Pressure

Scanning electron microscopy of plant cells using a variable-pressure SEM and cryogenic techniques

1993 ◽  
Vol 51 ◽  
pp. 260-261
Author(s):  
M. Yamada ◽  
K. Ueda ◽  
K. Kuboki ◽  
H. Matsushima ◽  
S. Joens
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Saturated Vapor ◽  
Plant Cells ◽  
Variable Pressure ◽  
Specimen Preparation ◽  
Operating Pressure ◽  
Vapor Pressures ◽  
Low Temperature Microscopy ◽  
Scanning Electron

Use of variable Pressure SEMs is spreading among electron microscopists The variable Pressure SEM does not necessarily require specimen Preparation such as fixation, dehydration, coating, etc which have been required for conventional scanning electron microscopy. The variable Pressure SEM allows operating Pressure of 1˜270 Pa in specimen chamber It does not allow microscopy of water-containing specimens under a saturated vapor Pressure of water. Therefore, it may cause shrink or deformation of water-containing soft specimens such as plant cells due to evaporation of water. A solution to this Problem is to lower the specimen temperature and maintain saturated vapor Pressures of water at low as shown in Fig. 1 On this technique, there is a Published report of experiment to have sufficient signal to noise ratio for scondary electron imaging at a relatively long working distance using an environmental SEM. We report here a new low temperature microscopy of soft Plant cells using a variable Pressure SEM (Hitachi S-225ON).

The Power Performance Characteristics of an Electric Resistance Furnace Equipped with Pulse-Phase Voltage Control

Vestnik MEI ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 83-89
Author(s):  
Viktor P. Rubtsov ◽  
◽  
Roman R. Klyushin ◽  
Nikolay I. Kryukov ◽  
◽  
...  
Keyword(s):  
Voltage Control ◽  
Performance Characteristics ◽  
Electric Resistance ◽  
Phase Voltage ◽  
Resistance Furnace ◽  
Power Performance ◽  
Electric Resistance Furnace ◽  
Pulse Phase
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