And as northern Africa warmed because it was getting more solar energy, summers became hotter and longer than usual.随着北非变得更暖，夏天变得比平时更热、更长。So the African Summer Monsoon was able to strengthen and move farther north over the Sahara desert.因此，非洲夏季季风得以增强，并向北推...
After German U-boats torpedoed (用鱼雷攻击)numerous British ships, a 2,700-strong fleet of cheap- and-cheerful "Liberty ships" was introduced to replace the lost vessels, providing a lifeline for the __29__ British. But the steel shells of hundreds of the ships __30__ in the icy ...
39. The idea of gamification was practiced by some businesses more than a century ago.40. There is reason to believe that gamification will be here to stay.41. Video games contributed in some ways to the wide application of gamification.42. When turning work into a game, it is necessary...
After 3 days of incubation at 37 °C under a 95% air/5% CO2 atmosphere, cell aggregates were formed. For experiments with cells alone (ФV = 0), the same protocol was followed except that the addition of MPs was omitted. Preparation of coated glass substrates for cellular assays ...
It was first cut into a gem known as the "Tavernier Blue"; recut to yield a stone named the "French Blue"; and was finally cut into a diamond that was eventually named the "Hope Diamond". It weighs 45.52 carats and has a Fancy Dark grayish blue color. It is on display at the ...
Lucas had now been sent to Tripoli by the African Association, which had recently been formed by a group of friends in London to "enlarge the fund of human knowledge" by "promoting the discovery of the interior parts of Africa". Lucas's mission was to cross the Sahara and look for the...
When an acid and base react, the products are salt and water. Suppose an unknown acid reacted with NaOH, and the salt was collected and identified as sodium sulfate. So what was the unknown acid? What is the predominant form of phosphoric acid (pK1 = 2....
A carrot of excitement was dangled in front of us with news the Canadian border may begin the reopening process in June. However, the excitement was short-lived.
Whole embryos were minced, washed in PBS and cultured in six-well tissue culture plates in Dulbecco's minimal essential medium (DMEM) supplemented with 10% fetal bovine serum (FBS). Constructs. A plasmid for transient expression of full-length human PC1 was modified from the Addgene ...