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Internet.Thenewrulesarepartofanefforttopreventyoungpeoplefromspendingtoomuchtime onunhealthyentertainment.Thatincludeswhatofficialscallthe“irrationalfanculture”. Underthenewrules,theresponsibilityformakingsurechildrenplayonlythreehoursadayas largelyonChinesegamingcompanieslikeNetEaseandTencent.Companieshavesetupreal-name...
Inthe1970s,chemistJamesLovelockandmicrobiologistLynn MargulisdevelopedtheGaiahypothesis(盖亚 假说):allorganicandinorganiccomponents ontheplanetarepartofoneself-regulatingsystem, workingtomaintainlifeonearth.Scientistsagreethat weneedtakesignificantactiontocontrolemissions(排 放).Butwherescientistsandpopularmovementshave ...
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This stage demands the involvement of a reservoir engineer, chemist, and field specialist. Specific tracer injection equipment is needed to inject the tracer into the wellbore. The first piece of equipment needed is a tank, made up of steel, with an inbuilt stirrer. The stirrer rotates, creatin...
The measurements were recorded within the linear range of the reaction with the reaction temperature and experimental conditions. In the form of duplication, the different concentration of test sample and positive control were performed. Aromatase fluorometric enzymatic assay were done to screen for the...
mechanisms of diterpene synthases (DTSs). Thus, it is a long-term goal for biochemists, structural biologists, computational chemists, and synthetic chemists/biologists to understand how versatile DTSs assemble these diverse, complex, and useful skeletons (Fig.1a, b)18,19,20,21. ...
As their work proceeded, I worked with David Mark, a molecular biologist, and Kirston Koths, a protein chemist, who were the main scientists at Cetus attempting to produce recombinant IL-2. David Mark cloned the gene for IL-2 based on its known sequence and inserted it into bacteria that...
Certain artifacts are especially vulnerable because some pioneers in plastic art didn't always know how to mix ingredients properly, says Thea van Oosten, a polymer chemist who, until retiring a few years ago, worked for decades at the Cultural Heritage Agency of the Netherlands. "It's like ...