Changes in the surface properties of calcium hydroxide upon ageing A spectroscopic and gas sorption study

1991 ◽  
Vol 58 (4) ◽  
pp. 353-361 ◽  
Author(s):  
Charis R. Theocharis ◽  
David Yeates
2007 ◽  
Vol 307 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Koffi Léon Konan ◽  
Claire Peyratout ◽  
Jean-Pierre Bonnet ◽  
Agnès Smith ◽  
Alain Jacquet ◽  
...  

2013 ◽  
Vol 49 (13) ◽  
pp. 1315 ◽  
Author(s):  
Marco Taddei ◽  
Ferdinando Costantino ◽  
Andrea Ienco ◽  
Angiolina Comotti ◽  
Phuong V. Dau ◽  
...  

2017 ◽  
Author(s):  
◽  
Shan Jiang

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Supramolecular chemistry is the study of how to form complexes through molecular self-assembly and intermolecular bonding. Our research group has been doing a lot supramolecular research based on macrocycles such as calixarenes, pyrogallolarenes and resorcinarens. This research is interested in formation of novel C-alkyresorcin[n]arene( n=4,6) based cocrystals. The basic plan is to design and synthesize cocrystals, then analyze the crystal structure via single crystal X-ray diffraction technique, and determine if the novel cocrystal has the ability to absorb gases such as carbon dioxide and nitrogen. Chapter two is about the cocrystallization of six different C-alkylresorcin[4]arene according the chain length and guest molecule 1-(2-pyridylazo)-2-naphthol( PAN) in four solvent systems. Five successfully synthesized cocrystals' structure and synthesis are discussed. Chapter three talks how to use cocrystallization as a separation method to separate C-ethylresocin[6]arene from C-ethylresorcin[4]arene. Three noval C-ethylresorcin[6]arene based cocrystals from three different solvents are discussed. Chapter four investigates the cocrystallization between C-ethylresorcin[n]arene (n=4, 6) with 4, 4'-bipyridine. It discusses how solvent and component concentration affect such cocrystallization. Chapter five uses cocrystal formed from C-ethylresorcin[6]arene and 1,2-bis(4-pyridyl)ethane in acetone as the gas sorption candidate to test its ability to absorb gases after solvent removal. The conditions of removing solvents and gas sorption results are discussed.


2020 ◽  
Vol 224 ◽  
pp. 103484 ◽  
Author(s):  
S. Vranjes-Wessely ◽  
D. Misch ◽  
I. Issa ◽  
D. Kiener ◽  
R. Fink ◽  
...  

Author(s):  
D.C. Hixson ◽  
J.C. Chan ◽  
J.M. Bowen ◽  
E.F. Walborg

Several years ago Karasaki (1) reported the production of type C virus particles by Novikoff ascites hepatocarcinoma cells. More recently, Weinstein (2) has reported the presence of type C virus particles in cell cultures derived from transplantable and primary hepatocellular carcinomas. To date, the biological function of these virus and their significance in chemically induced hepatocarcinogenesis are unknown. The present studies were initiated to determine a possible role for type C virus particles in chemically induced hepatocarcinogenesis. This communication describes results of studies on the biological and surface properties of type C virus associated with Novikoff hepatocarcinoma cells.Ecotropic and xenotropic murine leukemia virus (MuLV) activity in ascitic fluid of Novikoff tumor-bearing rats was assayed in murine sarcoma virus transformed S+L- mouse cells and S+L- mink cells, respectively. The presence of sarcoma virus activity was assayed in non-virus-producing normal rat kidney (NRK) cells. Ferritin conjugates of concanavalin A (Fer-Con wheat germ agglutinin (Fer-WGA), and Ricinus communis agglutinins I and II (Fer-RCAI and Fer-RCAII) were used to probe the structure and topography of saccharide determinants present on the viral envelope.


Author(s):  
R. H. Ritchie ◽  
A. Howie

An important part of condensed matter physics in recent years has involved detailed study of inelastic interactions between swift electrons and condensed matter surfaces. Here we will review some aspects of such interactions.Surface excitations have long been recognized as dominant in determining the exchange-correlation energy of charged particles outside the surface. Properties of surface and bulk polaritons, plasmons and optical phonons in plane-bounded and spherical systems will be discussed from the viewpoint of semiclassical and quantal dielectric theory. Plasmons at interfaces between dissimilar dielectrics and in superlattice configurations will also be considered.


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