Framing branching points for transition: Policy and pathways for UK heat decarbonisation

2021 ◽  
Vol 40 ◽  
pp. 147-158
Author(s):  
Katherine Lovell ◽  
Timothy J. Foxon
Keyword(s):  
Branching Points ◽  
Transition Policy

Rubidium in Barium Stars

2020 ◽  
Author(s):  
M P Roriz ◽  
M Lugaro ◽  
C B Pereira ◽  
N A Drake ◽  
S Junqueira ◽  
...  
Keyword(s):  
Neutron Source ◽  
Slow Neutron ◽  
Asymptotic Giant Branch ◽  
Neutron Density ◽  
Data Sets ◽  
Agb Stars ◽  
Branching Points ◽  
Theoretical Predictions ◽  
Low Mass ◽  
Chemically Peculiar Stars

Abstract Barium (Ba) stars are chemically peculiar stars that display in their atmospheres the signature of the slow neutron-capture (the s-process) mechanism that occurs in asymptotic giant branch (AGB) stars, a main contributor to the cosmic abundances. The observed chemical peculiarity in these objects is not due to self-enrichment, but to mass transfer between the components of a binary system. The atmospheres of Ba stars are therefore excellent astrophysical laboratories providing strong constraints for the nucleosynthesis of the s-process in AGB stars. In particular, rubidium (Rb) is a key element for the s-process diagnostic because it is sensitive to the neutron density and therefore its abundance can reveal the main neutron source for the s-process in AGB stars. We present Rb abundances for a large sample of 180 Ba stars from high resolution spectra (R = 48000), and we compare the observed [Rb/Zr] ratios with theoretical predictions from AGB s-process nucleosynthesis models. The target Ba stars in this study display [Rb/Zr] <0, showing that Rb was not efficiently produced by the activation of branching points. Model predictions from the Monash and FRUITY data sets of low-mass (≲ 4 M⊙) AGB stars are able to cover the Rb abundances observed in the target Ba stars. These observations indicate that the 13C(α,n)16O reaction is the main neutron source of the s-process in the low-mass AGB companions of the observed Ba stars. We have not found in the present study candidate companion for IR/OH massive AGB stars.

scholarly journals Assessment of Energy Transition Policy in Taiwan—A View of Sustainable Development Perspectives

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4402
Author(s):  
Chun-Kai Wang ◽  
Chien-Ming Lee ◽  
Yue-Rong Hong ◽  
Kan Cheng
Keyword(s):  
Climate Change ◽  
Power Generation ◽  
Sustainable Development ◽  
Energy Transition ◽  
Cost Effective ◽  
Adaptive Policy ◽  
Electricity Saving ◽  
Transition Policy ◽  
Development Perspective

Energy transition has become a priority for adaptive policy and measures taken in response to climate change around the world. This is an opportunity and a challenge for the Taiwan government to establish a climate-resilient power generation mixed to ensure electricity security as well as climate change mitigation. This study adopted a sustainable development perspective and applied optimal control theory to establish a cost-effective model to evaluate a long-term (2050), climate-resilient power generation mix for Taiwan. Furthermore, this study applies the STIRPAT approach to predict the demand of electricity by 2050 for the demand side management. The results not only showed the share of various power generation mixed, but also recommended the trajectory of electricity saving by 2050.

scholarly journals Expansion of Policy Domain of Sustainable Consumption and Production (SCP): Challenges and Opportunities for Policy Design

2021 ◽  
Vol 13 (12) ◽  
pp. 6763
Author(s):  
Yasuhiko Hotta ◽  
Tomohiro Tasaki ◽  
Ryu Koide
Keyword(s):  
Policy Design ◽  
Sustainable Consumption ◽  
Pollution Prevention ◽  
Ecological Modernization ◽  
Policy Debate ◽  
Policy Domain ◽  
Challenges And Opportunities ◽  
Sustainable Consumption And Production ◽  
Transition Policy

Since 2015, the international policy community has started to agree on international agreements with ambitious middle-term and long-term goals, highly relevant to sustainable consumption and production (SCP) such as those seen in the Paris Agreement, SDGs, and the plastic-related agreements at the G7 and G20 processes. Along with this trend, there has been growing attention given to socio-technical system change or “transition”. Policy debate is putting more focus on the need to change consumption and production patterns and deal with various ecological consequences within planetary boundaries such as decarbonization, absolute reduction in material throughput, or creation of a plastic-free society. This paper examines the expansion of the policy domain of SCP in three phases; SCP focusing on pollution control and cleaner production (SCP 1.0), SCP from the perspective of product lifecycle (SCP 2.0), and SCP focusing on systematic changes in socio-technical systems driving consumption and production (SCP 3.0). The potential impact of a wider SCP policy domain can be comparable to the historical shift in discourse related to ecological modernization theory from pollution prevention to efficiency. This emerging trend corresponds to the need for a fresh approach to policy design which can facilitate transition to sustainability.

Energy justice gaps in renewable energy transition policy initiatives in Vermont

Energy Policy ◽  
2021 ◽  
Vol 159 ◽  
pp. 112608
Author(s):  
Walter Keady ◽  
Bindu Panikkar ◽  
Ingrid L. Nelson ◽  
Asim Zia
Keyword(s):  
Renewable Energy ◽  
Energy Transition ◽  
Policy Initiatives ◽  
Energy Justice ◽  
Transition Policy

Biodegradable LC Oligomers with Cranked Branching Points Form Highly Oriented Fibrous Scaffold for Cytoskeletal Orientation

2006 ◽  
Vol 18 (26) ◽  
pp. 6220-6226 ◽  
Author(s):  
Tatsuo Kaneko ◽  
Hang Thi Tran ◽  
Michiya Matsusaki ◽  
Mitsuru Akashi
Keyword(s):  
Fibrous Scaffold ◽  
Branching Points
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