This refurb MacBook Air is $256 for Labor Day

almost 27 percent of people have fallen arches or flat fleet.

Techno-economic analysis shows that the process is energy-efficient with the cost of ~$21 ton−1 in electrical energy.Coal fly ash (CFA) is an attractive diluent additive in cement due to its widespread availability and ultralow cost.

The process also lets heavy metals that have evaporated be put in a vacuum chamber to keep them from entering the environment.The removal efficiency for various heavy metals ranges between 70 percent and 90 percent in just one second.Study abstract: “Development of cementitious materials with low carbon footprint is critical for greenhouse gas mitigation.

This is important because the cement industry accounts for about 8 percent of the world’s carbon dioxide emissions.The research is a big win for the environment because it cuts down on pollution without releasing heavy metals.

A new study has found a way to make cement production more sustainable by reducing its associated greenhouse gas emissions.

Traditional acid washing processes for heavy metal removal suffer from high chemical consumption and high-volume wastewater streams.Nokia has announced the launch of a 4G mobile network on the Moon by the end of this year after it was selected by NASA to build the first-ever cellular network on the Moon in 2019.

there is a good chance they could launch in 2023 as long as their launch partner of choice doesn’t have any setbacks or delays.told CNBC that 2023 was an “optimistic target” for the launch of Nokia’s equipment.

The network will be stored in a Nova-C lunar lander designed by Intuitive Machines and will launch via a SpaceX rocketa book she wrote to entertain her own children when she worked as a cook and housekeeper during World War II; it was initially serialized in Lilliput magazine under the title The Novel Nobody Will Publish.