CG: n CT: Distributed energy resources (DERs) are small technologies that produce, store and manage energy. Examples include solar panels, small wind turbines, electric vehicles and microgrids. Greater use of DERs could improve resource efficiency, increase energy system resilience, and give individuals and communities a stronger role in decarbonisation. As
GC: n CT: Historically, distributed generation meant combustion generators (e.g. diesel gensets). They were affordable, and in some cases reliable, but they were not clean. While many people will tolerate dirty generation thousands of miles away from them, they think twice when it is outside their bedroom window or office
CG: n CT: Boilers to burn woodfuels such as wood chips and pellets tends to be physically larger and more expensive than equivalent gas or oil boilers. This is partly as a result of the physical requirements for a high temperature combustion environment and transporting the solid fuel. As boilers
GC: n CT: A dynamical system consists of an abstract phase space or state space, whose coordinates describe the state at any instant, and a dynamical rule that specifies the immediate future of all state variables, given only the present values of those same state variables. For example the state
GC: n CT: Evidence for early agriculture can be obtained from pollen profiles indicating forest clearance. The practice of cultivation is widely believed to have been introduced into the interlacustrine region of central Africa by Bantu-speaking iron-workers, present by 2,000 yr BP (ref. 3) or, disputedly, 2,600 yr BP (ref.
GC: n CT: Automation is still a nascent technology in areas that could potentially revolutionise our professional and private lives in dramatic ways. Innovations in home automation, for example, could allow us to use time and resources more efficiently as all electrical appliances and electronic devices will be fully integrated
CG : nm CT : Un jumeau numérique est une réplique virtuelle qui permet de simuler, d’analyser, de surveiller en temps réel le fonctionnement d’un objet, d’un processus ou d’un système physique. Grâce à la collecte de données en continu et à l’utilisation de technologies comme l’Internet de objets (IoT),
GC: n CT: Nitrogen dioxide (NO2) is one of the nitrogen oxides (NOx), a group of air pollutants produced from combustion processes. In urban outdoor air, the presence of NO2 is mainly due to traffic. Nitric oxide (NO), which is emitted by motor vehicles or other combustion processes, combines with
GC: n CT: An idea to dispose of the waste underground in Antarctica sounded promising: heat from the radioactive decay would melt ice sheets below the waste, causing it to sink. But this plan was abandoned due to international treaties aimed at preserving the near pristine state of the continent.
GC: n CT: Emissionsof sulfur dioxide (SO2) and nitrogen oxides (NOx) from the electric power sector in 2012 declined to their lowest level since the passage of the Clean Air Act Amendments of 1990. The decline in emissions is due primarily to an increasing number of coal-fired units retrofitted with
GC: n CT: Wood is considered humankind’s very first source of energy. Today it still is the most important single source of renewable energy providing over 9% of the global total primary energy supply. Wood energy is as important as all other renewable energy sources altogether (hydro, geothermal, wastes, biogas,