High temperatures health monitoring of the condensed water height in steam pipe systems

2013 ◽  
Author(s):  
Hyeong Jae Lee ◽  
Yoseph Bar-Cohen ◽  
Shyh-Shiuh Lih ◽  
Mircea Badescu ◽  
Xiaoqi Bao ◽  
...  
Keyword(s):  
High Temperatures ◽  
Health Monitoring ◽  
Condensed Water ◽  
Steam Pipe ◽  
Pipe Systems ◽  
Water Height

Advanced signal processing for high temperatures health monitoring of condensed water height in steam pipes

2013 ◽  
Author(s):  
Shyh-Shiuh Lih ◽  
Yoseph Bar-Cohen ◽  
Hyeong Jae Lee ◽  
Nobuyuki Takano ◽  
Xiaoqi Bao
Keyword(s):  
Signal Processing ◽  
High Temperatures ◽  
Health Monitoring ◽  
Condensed Water ◽  
Steam Pipes ◽  
Water Height

scholarly journals In-service monitoring of steam pipe systems at high temperatures

2010 ◽  
Author(s):  
Yoseph Bar-Cohen ◽  
Shyh-Shiuh Lih ◽  
Mircea Badescu ◽  
Xiaoqi Bao ◽  
Stewart Sherrit ◽  
...  
Keyword(s):  
High Temperatures ◽  
Service Monitoring ◽  
Steam Pipe ◽  
Pipe Systems

In situ REM imaging of surface processes on ceramic bulk crystals from 300 to 1670 K in a conventional TEM

1991 ◽  
Vol 49 ◽  
pp. 660-661
Author(s):  
Z. L. Wang ◽  
J. Bentley
Keyword(s):  
High Temperatures ◽  
Image Resolution ◽  
Atomic Processes ◽  
Crystal Surfaces ◽  
Beam Radiation ◽  
Surface Areas ◽  
Transmission Electron ◽  
Reflection Electron Microscopy ◽  
Gas Reactions

Studying the behavior of surfaces at high temperatures is of great importance for understanding the properties of ceramics and associated surface-gas reactions. Atomic processes occurring on bulk crystal surfaces at high temperatures can be recorded by reflection electron microscopy (REM) in a conventional transmission electron microscope (TEM) with relatively high resolution, because REM is especially sensitive to atomic-height steps.Improved REM image resolution with a FEG: Cleaved surfaces of a-alumina (012) exhibit atomic flatness with steps of height about 5 Å, determined by reference to a screw (or near screw) dislocation with a presumed Burgers vector of b = (1/3)<012> (see Fig. 1). Steps of heights less than about 0.8 Å can be clearly resolved only with a field emission gun (FEG) (Fig. 2). The small steps are formed by the surface oscillating between the closely packed O and Al stacking layers. The bands of dark contrast (Fig. 2b) are the result of beam radiation damage to surface areas initially terminated with O ions.

Warm and freeze-fracture of cotton seed radicles

1987 ◽  
Vol 45 ◽  
pp. 984-985
Author(s):  
E. L. Vigil ◽  
E. F. Erbe
Keyword(s):  
Thin Film ◽  
Water Vapor ◽  
Fracture Surface ◽  
Membrane Structure ◽  
Room Temperature ◽  
Freeze Fracture ◽  
Longitudinal Axis ◽  
Fracture Plane ◽  
Cotton Seeds ◽  
Condensed Water

In cotton seeds the radicle has 12% moisture content which makes it possible to prepare freeze-fracture replicas without fixation or cryoprotection. For this study we have examined replicas of unfixed radicle tissue fractured at room temperature to obtain data on organelle and membrane structure.Excised radicles from seeds of cotton (Gossyplum hirsutum L. M-8) were fractured at room temperature along the longitudinal axis. The fracture was initiated by spliting the basal end of the excised radicle with a razor. This procedure produced a fracture through the tissue along an unknown fracture plane. The warm fractured radicle halves were placed on a thin film of 100% glycerol on a flat brass cap with fracture surface up. The cap was rapidly plunged into liquid nitrogen and transferred to a freeze- etch unit. The sample was etched for 3 min at -95°C to remove any condensed water vapor and then cooled to -150°C for platinum/carbon evaporation.

Sign in / Sign up

Export Citation Format

Share Document