The curing property and thermal property of copolymer epoxy resins were investigated. The results showed that copolymer epoxy resins could cure at room temperature after the hardener was added, and its curing process was an exothermic reaction. Comparison showed that copolymer epoxy resins prepared with phenol-liquefied bamboo as raw material had higher heat released than those prepared
with polyhydric alcohol-liquefied bamboo during curing. The DSC analysis showed that heat treatment could enhance the crosslinking of copolymer epoxy resins Cured at room temperature. However, resins prepared with polyhydric alcohol-liquefied bamboo had a lower glass transition temperature. The TGA analysis showed that resins prepared with phenol-liquefied bamboo had better thermal stability. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 2065-2073, 2010″
“Small-angle neutron scattering HSP inhibitor review with polarization analysis reveals that Fe(3)O(4) nanoparticles with 90 angstrom diameters have ferrimagnetic moments significantly reduced from that of bulk Fe(3)O(4) at 10 K, nominal saturation. Combined with previous results for an equivalent applied field at 200 K, a core-disordered find more shell picture of a spatially reduced ferrimagnetic core emerges, even well below the bulk blocking temperature. Zero-field cooling suggests that this magnetic morphology may be intrinsic to the nanoparticle, rather than field induced, at
10 K. (C) 2010 American Institute of Physics. [doi:10.1063/1.3358049]“
“The EORTC QLQ-H&N35 (H&N35) is widely used to measure quality of life in head and neck cancer patients. The aims of this study were to obtain insight into a) the languages in which the H&N35 has been used and the psychometric properties in those languages, b) the study designs, and c) its acceptance by patients and investigators.
A systematic literature review was performed searching for all original papers that had used at least one item of the H&N35. Identified papers were read and the information about methodological issues abstracted statistically analysed.
A total of 136 papers
were identified. The H&N35 was administered in 19 different languages in 27 countries. The AZ 628 research buy study design was cross-sectional in the majority of studies (53 %), prospective cohort studies (31 %), phase-II-trials (7 %), phase-III-trials (6 %) and case-control studies (1 %). The scales with the highest percentages of missing values were Sexuality (11.5 %) and Speech (7 %). The median Cronbach’s alpha of the multi-item scales ranged from 0.61 (Senses) to 0.93 (Sexuality). Construct validity was rarely investigated. On average, 12 scales (range 0-18) of the instrument were used by the investigators. The scale most often used was swallowing (in 85 % of studies) and least often used was Weight Gain (39 %).
The H&N35 is widely used throughout the world, mainly in observational studies, and has demonstrated robust psychometric features in different languages.