GC: n CT: Photosynthetic algae use sunlight to convert CO2 into natural oils that are suitable for conversion into biodiesel. However, harvesting the algae and extracting the oil are currently difficult and expensive operations. Cheaper and more energy efficient processes are required before mass production of algae can be used

GC: n CT: The economic feasibility of central photovoltaic power plants is investigated from the perspective of an electric power utility company. The maximum acceptable price of the system is established, as a function of conventional fuel costs. Factors which would enhance the economic attractiveness of the system are analyzed.

GC: n CT: Charcoal is a fine, black powder made from wood or other natural materials by heating them in an airless environment. Charcoal used for health conditions is usually “activated” to make it a very fine powder, which increases its effectiveness. Activated charcoal can chemically attach, or adsorb, to

CG: n CT: To properly inform the planning and deployment of charging infrastructure, there are many interdependent and often contradicting aspects that should be considered to quantify the performance of charging pools: Being motivated by the need to innovate the road transport that is based on fossil fuels, from the

CG: n CT: Chat refers to the process of communicating, interacting and/or exchanging messages over the Internet. It involves two or more individuals that communicate through a chat-enabled service or software. Chat is also known as chatting, online chat or Internet chat. S: Techopedia – https://www.techopedia.com/definition/387/chat (last access: 23 October

See “conversational agent”: https://sierterm.es/content/conversational-agent/?lang=en

GC: n CT: The check valve was designed with a drive shaft that connects the internal valve disk to an external pneumatic cylinder. The valve failed when a dowel pin designed to fasten the drive shaft to the disk sheared and a key designed to transfer torque from the drive

GC: n CT: Many energy sources commonly used by humans are forms of chemical energy. They are usually labeled “fuels.” The way to use the chemical energy in most fuels is by burning them, as we do with wood, natural gas, gasoline, coal, and others. When these fuels burn, they

GC: n CT: Nobel Prize-winning chemist F. Sherwood Rowland probably never intended to be an environmental whistle-blower. But in the 1970s, when he and his postdoctoral associate Mario Molina at the University of California-Irvine studied a set of compounds called chlorofluorocarbons, or CFCs, they realized that they had uncovered a

GC: n CT: The circuit breaker is an absolutely essential device in the modern world and one of the most important safety mechanisms in your home. Whenever electrical wiring in a building has too much current flowing through it, these simple machines cut the power until somebody can fix the

GC: n CT: A circular economy is an alternative to a traditional linear economy (make, use, dispose) in which we keep resources in use for as long as possible, extract the maximum value from them whilst in use, then recover and regenerate products and materials at the end of each

GC: n CT: Nearly every aspect of our daily lives – heating, lighting, cooking, communications, transportation, commerce – depends on electricity. Unfortunately, generating that electricity through the use of traditional fossil fuels can be economically and environmentally costly and a danger to public health. Electricity generated with fossil fuels, such

GC: n CT: Clearcutting means the felling and removal of all trees from a given tract of forest. One forestry expert refers to the practice as “an ecological trauma that has no precedent in nature except for a major volcanic eruption.” Clearcutting can destroy an area’s ecological integrity in a

GC: n CT: The Fifth Assessment Report (AR5) provides a clear and up-to-date view of the current state of scientific knowledge relevant to climate change. It consists of three Working Group (WG) Reports and a Synthesis Report (SYR) which integrates and synthesizes material in the WG reports for policymakers. The

GC: n CT: Cloud computing, often referred to as simply “the cloud,” is the delivery of on-demand computing resources—everything from applications to data centers—over the Internet on a pay-for-use basis. S: http://www.ibm.com/cloud-computing/us/en/what-is-cloud-computing.html (last access: 22 December 2014) N: 1. cloud (n): Old English clud “mass of rock, hill,” related to

GC: n CT: Adding to its comprehensive and flexible cloud portfolio, Oracle today announced Oracle Infrastructure as a Service (Oracle IaaS) with Capacity on Demand. Oracle IaaS enables organizations to deploy fully integrated Engineered Systems, including Oracle Exadata Database Machine, Oracle Exalogic Elastic Cloud, Oracle SPARC SuperCluster, Oracle Exalytics In-Memory

See “cloudcomputing”: https://humantermuem.es/cloud-computing

See “carbon monoxide”: https://sierterm.es/content/carbon-monoxide/?lang=en

GC: n CT: Biomass is relatively cleaner than coal and is the only renewable carbon resource that can be directly converted into fuel. Biomass can significantly contribute to the world’s energy needs if harnessed sustainably. However, there are also problems associated with the thermal conversion of biomass. This paper investigates

See carbon dioxide

GC: n CT: The vast majority of CO2 allowances issued by each RGGI state are distributed through quarterly, regional CO2 allowance auctions. Proceeds from the auctions are returned to states and invested in consumer benefit programs: energy efficiency, renewable energy, direct energy bill assistance and other greenhouse gas reduction programs.

GC: npl CT: The increase in global emissions of carbon dioxide (CO2) from fossil-fuel combustion and other smaller industrial sources – the main cause of human-induced global warming – slowed down in 2012, while the global average annual growth rate of 2.4 ppm in atmospheric CO2 concentrations in 2012 was

GC: n CT: The energy we get from coal today comes from the energy that plants absorbed from the sun millions of years ago. All living plants store solar energy through a process known as photosynthesis. When plants die, this energy is usually released as the plants decay. Under conditions

GC: n CT: A cofferdam is a temporary structure designed to keep water and/or soil out of the excavation in which a bridge pier or other structure is built. When construction must take place below the water level, a cofferdam is built to give workers a dry work environment. Sheet