Fluorimetric detection of Ag+ cations in aqueous solutions using a polyvinyl chloride sensor film doped with crown-containing 1,8-naphthalimide

2021 ◽  
Vol 31 (4) ◽  
pp. 517-519
Author(s):  
Pavel A. Panchenko ◽  
Yurii V. Fedorov ◽  
Anna S. Polyakova ◽  
Olga A. Fedorova
2011 ◽  
Vol 377 (1-2) ◽  
pp. 167-174 ◽  
Author(s):  
Cristina-Veronica I. Gherasim ◽  
Gelu Bourceanu ◽  
Romeo-Iulian Olariu ◽  
Cecilia Arsene

1994 ◽  
Vol 20 (4) ◽  
pp. 579-582 ◽  
Author(s):  
Toshitaka Funazukuri ◽  
Takumi Mochizuki ◽  
Tsuneo Arai ◽  
Noriaki Wakao

Alloy Digest ◽  
2003 ◽  
Vol 52 (10) ◽  

Abstract Crucible CPM S60V is a high-vanadium modification of 440C stainless steel with significantly increased wear resistance and comparable corrosion resistance. It is excellent for use in equipment components processing polyvinyl chloride (PVC) plastic, or any tooling in contact with mildly acidic aqueous solutions. The usual application hardness is 62 to 64 HRC. This datasheet provides information on composition, physical properties, microstructure, hardness, and elasticity as well as fracture toughness. It also includes information on corrosion resistance as well as heat treating and machining. Filing Code: SS-489. Producer or source: Crucible Service Centers. Originally published as CRUCIBLE CPM T440V, August 1987, revised October 2003.


Author(s):  
T. G. Gregory

A nondestructive replica technique permitting complete inspection of bore surfaces having an inside diameter from 0.050 inch to 0.500 inch is described. Replicas are thermally formed on the outside surface of plastic tubing inflated in the bore of the sample being studied. This technique provides a new medium for inspection of bores that are too small or otherwise beyond the operating limits of conventional inspection methods.Bore replicas may be prepared by sliding a length of plastic tubing completely through the bore to be studied as shown in Figure 1. Polyvinyl chloride tubing suitable for this replica process is commercially available in sizes from 0.037- to 0.500-inch diameter. A tube size slightly smaller than the bore to be replicated should be used to facilitate insertion of the plastic replica blank into the bore.


Author(s):  
K. J. Böhm ◽  
a. E. Unger

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:


Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.


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