The system that stretched from Texas to the Canadian Maritime provinces had prompted several emergency declarations even before the dangerous storms arrived.
The tariff reduction on US cheese was one of 187 US product categories that China cut tariffs on by an average of 17.3 percent to 7.7 percent.
The team's study appeared in Circulation, a science journal published by the American Heart Association, on Tuesday.
The summit, themed "BRICS: economic growth for an innovative future", offers an opportunity for the countries to boost their cooperation in scientific and technological innovation, finance and digital economy.
The surveyed unemployment rate in urban areas in July stood at 5.7 percent, which equals that of June but was 0.4 percentage point higher year-on-year.
The survey also found that 30 percent of respondents regard connectivity as one of the top five considerations when buying a new car.
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The synthetic opioid, which is 50 times more powerful than heroin and 100 times more potent than morphine, is prescribed to treat patients with chronic pain, especially after surgery.
The sum, asked to be appropriated during the 12-month period starting Oct 1, includes 636.4 billion dollars for the base budget and 69 billion dollars for Overseas Contingency Operations, also known as war budget, the proposal said.
The suspension will take effect from Jan 1, said the China Vehicle Technology Service Center, citing approval from the Ministry of Industry and Information Technology (MIIT).
The study, led by scientists at the Columbia University and published in the journal Molecular Psychiatry, followed 95,754 children born between 1999 and 2009, including 583 cases of autism identified in Norway through an autism birth cohort study.