In addition to the challenges of extraction, security and economic stability, the Afghan people have to look forward to even more government corruption if the minerals under their feet are ever tapped.
Among the internal challenges, resource extraction in Greenland, as in other parts of the Artic, is challenged by the climate conditions, limited infrastructure, and remoteness (Hansen et al., 2016).
In particular, two different methods were optimized and validated: one that allows for simultaneous determination of all targets, and an ad hoc method for determination of hydrophobic analytes, a class that often poses a challenge for extraction from food matrices.
The reactions involved in this system were analyzed to identify the challenges for successful extraction.
However, numerous challenges with the extraction of radiomic features have been highlighted [10].
In contrast, fossil fuel development is constrained by stable or increasing prices and the fact that technological improvements are made very costly and difficult by ever-harder extraction challenges.
We examine the potential and the challenges of pronunciation extraction from phoneme sequences through cross-lingual word-to-phoneme alignment.
One of the recognized challenges in chemical extraction of mercury from soil is the diversity of procedures that are currently available in literature and that differ in terms of the extractant solution used, soil:extractant ratio and duration of extraction.
In addition, the mixture of chemical-induced disease and chemical-treated disease relations within one sentence often poses extra challenges for feature/pattern extraction.
However, a lack of spatially explicit, publicly available sources of data on anthropogenic disturbances and natural resource extraction challenges the development of detailed wilderness inventories.
