BEIJING, Aug. 15 (Xinhua) -- The following is a summary of published science and technology news in China:

SPACE LAB MODULE

The China Manned Space Agency (CMSA) has revealed that the first lab module of China's space station is being powered by a "pair of wings" composed of huge, flexible solar arrays.

The Wentian module, a structure about the size of a Beijing subway car, was flung into space and later docked with the combination of China's space station in July, becoming the heaviest ever single-cabin active spacecraft in orbit.

The CMSA on Monday provided technical details of huge solar arrays on the space experiment platform, with multiple cabinets and more than 40 approved research projects.

GRAPHENE STUDY

A study conducted by Chinese researchers and their British counterparts has recently found that reduced graphene oxide can extract gold from electronic waste with high efficiency.

As a good conductor of electricity, gold is widely used in electronic products, so the recovery of gold resources from electronic waste is of great importance. However, it remains challenging to achieve high extraction capacity and precise selectivity if only a trace amount of gold is mixed with other metallic elements.

DAYTIME NAP STUDY

Chinese researchers have found that increased daytime napping frequency is likely to be a potential causal risk factor for essential hypertension or ischemic stroke.

For middle-aged and elderly people worldwide, hypertension is one of the main causes of death triggered by cardiovascular diseases, and stroke is one of the main causes of disability. Early studies have found that people's blood pressure will rise after taking a nap. Enditem

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