That plan was upset last month, when President Hamid Karzai announced that the polls would be held in June, as Afghanistan's new constitution recommends they should be, if possible.Even before Mr Karzai's decree, the UN was encountering certain difficulties.
Studies initially focused on the policies' impacts and encountered certain difficulties in evaluating the effectiveness of complex interventions in their natural context [ 4, 5].
In our analysis of this research, we have encountered certain difficulties that were evaluated in a realistic manner before initiating execution of the project.
In searching for companies to contact, we encountered certain obstacles.
Still, the heterotrophic theory of abiogenesis has encountered certain problems.
The sorption capacity of the ETS-4 in the column in two consecutive cycles remained constant (33.6 and 33.3 mg g−1, respectively); however due to certain difficulties encountered during ETS-4 packaging and operation mode, breakthrough curves corresponding to these cycles showed dissimilar patterns.
The approach is based on rubber fatigue life (S N) data rather than crack growth rate and tearing energy (da/dN T) data, avoiding certain difficulties often encountered using the crack growth method.
Certain difficulties are encountered when ESD is applied such as ill-defined criteria, scarcity of information, lack of process-specific data, metrics and the need to satisfy multiple decision makers.
However, certain difficulties are encountered in terms of high viscosity and thickness control in the polymer matrix for its application to the curved surface of the wing airfoil model.
