The weightlessness rate of the resin after curing 2 h at temperature of 110,160℃ were 8.8% and 12.8% respectively. Releace of large quantities of water and formaldehyde molecules during the curing process were the main reason for the weightlessness.
This paper analyzes on the present situation of accounting information disclosure in Chinese enterprises,discusses on the main reasons of the formation of such situation,and advances some countermeasures for improving the quality of accounting information disclosure.
The paper analyses the reasons for the NBA overseas market expansion and points out that the main reasons of the NBA overseas market expansions are the competitions of the domestic markets,domestic market saturation of NBA and NBA's influence on the international market.
In the weakly acidic solution, the hydrogen bond interaction between -NH+3 and ≡S-O- groups should be the driving force of the adsorption, the hydroxylation of ≡S-O- group in strongly acidic solution and the conversion of -NH+3 to -NH2 in the basic solution were the main reasons for the decrease of adsorption amount.
Conclusion Simple laminectomy or discectomy was not indication for lumbar spondylolisthesis. Deficient decompression, the internal fixation failure, no bone graft or nonunion was the main causes of implant failure.
Otherwise, the original errors of the mechanism are the main reason leading to more errors.
As a result of long-term removal of animal grazing, crust kept intact in year-round exclusion community, which was a main reason of community xerophytization.
Our top priority is to pinpoint the main reason and the interrelated links between causative factors by adopting a macro-approach, or comprehensive comparison analysis.
The main reason for this effect is a decrease in the influence of steric factors on intermolecular electronic transitions in the case of the near-spherical structure of acceptor molecules as compared with the planar structure.
The main reason for catalyst deactivation is found to be coke formation.
The ARVC, usually presenting with different clinical manifestations and pathological changes, were mainly seen in young men and is one of the main causes of sudden death in the young.
This is one of the main causes of deviation of the modification rate versus temperature from the Arrhenius curves.
The causes of freshwater deficiency are considered, the main causes being poor environmental conditions and excessive water consumption.
It is shown that the main causes of a decrease in the critical field with increasing gas temperature are the change in the electron energy distribution due to gas dissociation and the reduction in the rate of electron attachment to neutral particles.
The main causes of the soil cover transformation within a small ravine catchment area over 300 years of agricultural development were considered.