다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

비만아 부모의 돌봄 경험: q 방법론

Advances in atomic physics, such as cooling and trapping of atoms and molecules and developments in frequency metrology, have added orders of magnitude to the precision of atom-based clocks and sensors. Applications extend beyond atomic physics and this article reviews using these new techniques to address important challenges in physics and to look for variations in the fundamental constants, search for interactions beyond the standard model of particle physics, and test the principles of general relativity.

Search for New Physics with Atoms and Molecules

Smart Energy Systems for coherent 100% renewable energy and transport solutions

Long-term patterns of European PV output using 30 years of validated hourly reanalysis and satellite data

https://doi.org/10.1016/j.isci.2023.106677

Using Modeling All Alternatives to explore 55% decarbonization scenarios of the European electricity sector

Residential demands for space heating and hot water account for 31% of the total European energy demand. Space heating is highly dependent on ambient conditions and susceptible to climate change. We adopt a techno-economic standpoint and assess the impact of climate change on decentralized heating demand and the cost-optimal mix of heating technologies. Temperature data with high spatial resolution from nine climate models implementing three Representative Concentration Pathways from IPCC are used to estimate climate induced changes in the European demand side for heating. The demand side is modelled by the proxy of heating-degree days. The supply side is modelled by using a screening curve approach to the economics of heat generation. We find that space heating demand decreases by up to 16% and 24% in low and intermediate concentration pathways. This reduction reaches 42% in the most extreme global warming scenario. When considering historic weather data, we find a heterogeneous mix of technologies are cost-optimal, depending on the heating load factor (number of full-load hours per year). Increasing ambient temperatures toward the end-century improve the economic performance of heat pumps in all concentration pathways. Cost optimal technologies broadly correspond to heat markets and policies in Europe, with some exceptions.

Gorm Bruun Andresen

Papers

Using Modeling All Alternatives to explore 55% decarbonization scenarios of the European electricity sector

Impact of climate change on the cost optimal mix of decentralized heating in Europe