A study was made of the thermal stability of epoxy compounds which were unfilled or contained metallic fillers such as aluminium dust, aluminium flakes, powdered bronze, powdered brass and silver flakes. The properties of the compounds were modified by the use of various hardeners.
Authors:J. Delben, A. Delben, K. Miazato, S. Oliveira, and Y. Messaddeq
New fluorindate glass compositions have been investigated in order to improve optical transmission as well as thermal properties.
Chloride inclusion extends transmission of a fluoride matrix to longer wavelength in infrared region. In the present work
thermal parameters of an IZnBS composition, based on InF3, ZnF2, BaF2 and SrF2, with various amounts of alkaline chlorides were investigated by differential scanning calorimetry. The chloride presence
decreased all characteristic temperatures and increased both thermal stability and glass forming ability up to 10% of MCl
content, where M=Li, Na, K and Rb. The presence of NaCl promoted glass phase separation. For samples containing same concentration of NaCl,
this effect is accentuated for increasing the contents of SrF2.
This paper presents the result of thermodynamic studies on Ge1−xSnxSe2.5 (0 ≤ x ≤ 0.5) glasses using differential scanning calorimetry. The obtained experimental results on phase transformations have been
employed to obtain thermodynamic parameters like entropy difference between metastable states in the glassy region, difference
of Gibbs free energy, specific heat, entropy between the glassy and the crystalline phase and the enthalpy released during
phase transformation (glassy to crystalline). The results yield that, Ge0.7Sn0.3Se2.5 sample is least stable among all the samples. The stability increases on addition of Sn beyond 0.3 at. mass% upto 0.5 at.
derivatives in the chosen models ensure the system's stability. The proposed control law is characterized by several adjustable parameters. The adaptation mechanism used to adjust the parameters is a combination between the MIT and Lyapunov stability methods
Authors:Yuanyou Yang, Rushan Lin, Ning Liu, Jiali Liao, Min Wei, and Jiannan Jin
With 2,3,5,6-tetrafluorophenyl 3-(nodo-carboranyl) propionate (TCP) as a new potential bi-functional linker, bovine serum albumin (BSA) was conjugated with 211At, and the conjugated model protein (211At-TCP-BSA) was preliminarily evaluated in vitro and in vivo by comparison with 211At-SAB-BSA and 211At-SAPC-BSA, which conjugated with 211At via aryl derivatives ATE (N-succinimidyl-3-(tri-n-butylstannyl) benzoate) or SPC (N-succinimidyl 5-(tributylstannyl)-3-pyridinecarboxylate). The radiolabeled intermediate 211At-TCP was coupled to BSA in yields ranging from 35 to 45% with radiochemical purity of more than 98%. The conjugated 211At-TCP-BSA exhibited considerable stability in vitro in 0.1 mol/L PBS (pH 7.6) at room temperature (RT), similar to 211At-SAPC-BSA and 211At-SAB-BSA. Biodistribution of the 211At conjugated protein was investigated in NIH strain mice by I.V injection. The results showed that 211At-TCP-BSA was constantly stable in vivo as well as in vitro, but more stable than 211At-SAPC-BSA and 211At-SAB-BSA. These results implied that radioastatinated carboranes based on B–At bonds are higher stability than radioastatinated
aryl derivatives based on C–At to in vivo deastatination. In other word, TCP should be a promising bi-functional linker for
211At conjugation of proteins or antibodies.
groundwater- and river water-level variations (e.g., Schnellmann et al. 2010 ; Mentes 2017b ) on river bank stability. However, to date, the direct effect of hydrological processes on movements and deformations of high river banks (e.g., Uchimura et
Authors:Wantinee Viratyaporn and Richard L. Lehman
properties, particularly its low toughness and poor thermal stability. In the polymerization process the termination reaction of propagating chains can occur either through disproportionation or combination reactions depending on the stability of the
Authors:Jiří Kučerík, Jan David, Martin Weiter, Martin Vala, Jan Vyňuchal, Imad Ouzzane, and Ota Salyk
techniques. Recently, those techniques were used in order to study the stability of DPP N -alkyl derivatives and polymorphism occurring upon fast and moderate cooling of the material [ 8 ].
More recently, the thermogravimetrical analysis of DPP