TY JOUR TI Adaptation of the NPV model, taking into account environmental risks and sanctions measures, to evaluate “green” projects in the Arctic oil and gas complex KW net present value KW NPV adaptation KW sanctions costs KW environmental risks KW permafrost thawing KW forest fires KW Arctic oil and gas sector KW sustainable development JO Vestnik of Astrakhan State Technical University. Series: Economics AU Solelshchikov, P.. AU Shulimova, M.. PY 2026 IS 2026 PB Astrakhan State Technical University