Briquetagem de biomassa florestal: variáveis do processo e qualidade do produto.

EVINCI. Resumo

Alteração de propriedades energéticas de briquetes de biomassa florestal em função do material e umidade.

EVINCI. Resumo

Influência da pressão na densidade e no teor de umidade de briquetes de diferentes resíduos de biomassa florestal.

Resumo

CORSIA: The first internationally adopted approach to calculate life-cycle GHG emissions for aviation fuels

The aviation sector has grown at a significant pace in recent years, and despite improvements in aircraft efficiency, the sector's impact on climate change is a growing concern. To address this concern, the International Civil Aviation Organization (ICAO) established the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) to help reduce aviation greenhouse gas (GHG) emissions. This paper presents a methodology agreed by the 193 ICAO member states to evaluate the life-cycle GHG emissions of sustainable aviation fuels (SAFs), in the CORSIA system. The core life-cycle assessment and induced land use change values of SAFs are presented to determine the GHG savings of certified pathways. The paper aims to present that a number of SAFs can yield significant life-cycle emission reductions compared to petroleum-derived jet fuel. This implies the potentially major role of SAFs in reducing aviation's carbon footprint

Transformations within reach: Pathways to a sustainable and resilient world - Resilient Food Systems

The global spread of COVID-19 is rapidly changing the world as we know it. The pandemic, which is causing loss of life and personal grief, as well as wreaking havoc on health and economic systems, has revealed our global interdependencies and vulnerabilities. Many of the knock-on effects of this crisis are still emerging and will continue to unfold in the coming years. Several countries continue to suffer from increasing infection numbers, while some are slowly emerging from the crisis and taking steps to restart public life and their economies. This report is a contribution to the IIASA-ISC Consultative Science Platform, which seeks to explore the implications of the pandemic for sustainable development pathways. This report summarizes emerging perspectives for building resilient food systems in the wake of COVID-19. Its thematic scope and the recommendations have benefited from three virtual international consultations conducted between June and September 2020 (see Acknowledgments). The summary sections that follow and the main text of this report describe first our global food system and the need for transformation in general before discussing the impacts of the pandemic and exploring how the recovery process can be harnessed to build more resilient, equitable, and sustainable food systems. It is envisaged that the Consultative Platform and the report will stimulate further dialogue to help identify applied research initiatives, which strengthen the knowledge foundation for decision making