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CANBERRA - The Australian government has rejected calls from the United Nations' Intergovernmental Panel on Climate Change (IPCC) to phase out coal-fired power by 2050.

By the end of August, the company had completed hot firing tests for 80-tonne and 10-tonne TQ rocket engines. The ZQ-2 liquid-propellant rocket has undergone a series of ground tests, with key components delivered.

By extending the expiration dates, the change brings the timing of international travel restrictions in alignment with those governing the Canada-US land border. Previously, international restrictions expired on the last day of each month while the Canada-US border restrictions expired on the 21st.

By the end of June, governments at all levels had registered 175,800 micro-blogging accounts, which attracted about 2.9 billion followers with more than 152 billion views, according to the 2018 China New Media Development Report.

By focusing on defects found in a single manufacturing step, Zhang applied machine learning and artificial intelligence to analysis of a quantities of data, creating a "visual recognition database that can read glass printing defects like a human mind", he said.