●Estefania Isavel Orquera Guevara, 「Lithium in Latin America: Mapping Flows and Environmental Footprints to 2050」 Oral,ISIE-SEM 2025, June 30-July 4, 2025, Singapore, Singapore

●Estefania Isavel Orquera Guevara,Tim Werner, Stephen Northey, Guochng Xu, Kazuyo Matsubae, 「Comparing Lithium Dynamics:Australia vs. Latin America」 Oral,The Biennial International Conference on Eco Balance, November 3-7,2024, Sendai,Japan

●Estefania Isavel Orquera Guevara,「Assessing Lithium Dynamics in the Global South Prospective Analysis」 Oral,第6回 環境科学討論会/6th Academic Forum on Environmental Studies,August 24-27, 2024, Sendai, Japan [The Dean's award ]

●Estefania Isavel Orquera Guevara,「Lithium Dynamics in the Global South(南半球におけるリチウムの動向）」 Poster,第6回 環境科学討論会/6th Academic Forum on Environmental Studies,August 24-27, 2024, Sendai, Japan

●Estefania Isavel Orquera Guevara,「Securing Critical Mineral Supplies:Assessing Lithium Dynamics in the Global South」 Oral,2024 Joint ISIE Socio-Economic Metabolism and Asia-Pacific Conference,October 25,2024, Beijing, China

●Estefania Isavel Orquera Guevara,「Material Flow Analysis of Lithium in Latin America」 Oral,The 10th 3RINCS conference,March 15-17,2024, Sydney Aurtralia

●Estefania Isavel Orquera Guevara, 「Recycling potential of Aluminium used in passenger vehicles in Latin America 」 Poster, The 11th International Conference on Industrial Ecology (ISIE2023 ),July 02-05,2023, Leiden in Netherlands

●Estefania Isavel Orquera Guevara,「Metal assessment in the vehicle sector to establish recycling as a proposal of circularity strategy in Latin」 Oral,The 9th 3RINCS conference,March 13-17 2023　Kyoto