Upstream processes: processes that happen before those that are directly linked to the item or system to be assessed, such as for example raw material extraction, energy required for extraction as well as environmental impacts resulting from these.
The results showed that extraction temperature, ratio of phosphate buffer to raw material, extraction time, and ratio of trypsinase to raw material were the main four variables that influenced the yields of extracts.
As such, MRIOs foremost rely on reliable data on domestic material extraction, as any errors or uncertainty in the extraction data are passed through the full analysis and directly affect the footprint results.
The road extraction results.
Figure 7 SVA-based ROI extraction results.
(c) The extraction results of (a).
Figure 3 The road extraction results.
Figure 11 presents main profile extraction results.
Microphotographs and extraction results allowed to make some hypotheses on the extraction mechanisms.
The extraction conditions such as SBSE solid phase material, extraction time, extraction temperature, pH value and salt concentration were optimized.
