Synthesis and optimization of dopamine hydrochloride functionalized palygorskite and their application in protective coatings on water saturated surface of concrete

2021 ◽  
pp. 50779
Author(s):  
Dewen Sun ◽  
Yingjie Ma ◽  
Liqun Lu ◽  
Shuai Qi ◽  
Pingping Hou ◽  
...  
Author(s):  
N.J. Tighe ◽  
H.M. Flower ◽  
P.R. Swann

A differentially pumped environmental cell has been developed for use in the AEI EM7 million volt microscope. In the initial version the column of gas traversed by the beam was 5.5mm. This permited inclusion of a tilting hot stage in the cell for investigating high temperature gas-specimen reactions. In order to examine specimens in the wet state it was found that a pressure of approximately 400 torr of water saturated helium was needed around the specimen to prevent dehydration. Inelastic scattering by the water resulted in a sharp loss of image quality. Therefore a modified cell with an ‘airgap’ of only 1.5mm has been constructed. The shorter electron path through the gas permits examination of specimens at the necessary pressure of moist helium; the specimen can still be tilted about the side entry rod axis by ±7°C to obtain stereopairs.


Author(s):  
Alexander D. Pogrebnyak ◽  
Marharyta A. Lisovenko ◽  
Amanzhol Turlybekuly ◽  
Vladimir V. Buranich

2018 ◽  
Vol 40 (2) ◽  
pp. 106-112
Author(s):  
S.N. Kuzmenko ◽  
◽  
N.Ya. Kuzmenko ◽  
N.N. Laskovenko ◽  
V.A. Gumenyuk ◽  
...  
Keyword(s):  

2005 ◽  
Vol 2 (2) ◽  
pp. 17
Author(s):  
Norhayati Hamzah ◽  
Deepak Kumar Ghodgaonkar ◽  
Kamal Faizin Che Kasim ◽  
Zaiki Awang

Microwave nondestructive testing (MNDT) techniques are applied to evaluate quality of anti-corrosive protective coatings and paints on metal surfaces. A tree-space microwave measurement (FSMM) system is used for MNDT of protective coatings. The FSMM system consists of transmit and receive spot-focusing horn lens antennas, a vector network analyzer, mode transitions and a computer. Diffraction effects at the edges of the sample are minimized by using spot-focusing horn lens antennas. Errors due to multiple reflections between antennas are corrected by using free-space LRL (line, reflect, line) calibration technique. We have measured complex reflection coefficient of polyurethane based paint which is coated on brass plates.


2007 ◽  
Vol 230 (10) ◽  
pp. 1529-1529
Author(s):  
Monica Rosati ◽  
Doris H. Dyson ◽  
Melissa D. Sinclair ◽  
William C. Sears

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