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The competition challenge changes each year, and the teams can reuse only certain components from previous years. The robots weigh at most 125 pounds (56.7 kg), without batteries and bumpers. The kit issued to each team contains a base set of parts. Registration and the kit of parts together cost about US$6,000. In addition to that, teams are ...
Laboratory standard for compressed gas. Is a gas or mixture of gases in a container having an absolute pressure exceeding 40 pounds per square inch (psi) at 70 °F (21.1 °C); or [10] Is a gas or mixture of gases having an absolute pressure exceeding 104 psi at 130 °F (54.4 °C) regardless of the pressure at 70 °F (21.1 °C); or [10]
A study of 25 crowdsourced ideas aimed at reducing political polarisation in the United States is published in the journal Science. [450] Scientists build the world's smallest quantum computer using a single photon. [451] [452] 19 October – Researchers develop a plant-based food supplement to protect bees' brains from neurotoxins. [453] 23 ...
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Social constructions are human-created ideas, objects, or events created by a series of choices and interactions. [10] These interactions have consequences that change the perception that different groups of people have on these constructs. Some examples of social construction include class, race, money, and citizenship.
For the analysis of volatile compounds, a purge and trap (P&T) concentrator system may be used to introduce samples. The target analytes are extracted by mixing the sample with water and purge with inert gas (e.g. Nitrogen gas) into an airtight chamber, this is known as purging or sparging.
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In chemistry, a condenser is laboratory apparatus used to condense vapors – that is, turn them into liquids – by cooling them down. [1] Condensers are routinely used in laboratory operations such as distillation, reflux, and extraction. In distillation, a mixture is heated until the more volatile components boil off, the vapors are ...