The Thermavault refrigeration unit can keep vaccines cool with a reusable salt solution. The teens who built it plan to test ...

The invention uses salts that pull heat from their environments when they dissolve in water ... barium hydroxide octahydrate and ammonium chloride. "While we did scour through the entire internet ...

A study in Engineering reveals a new adsorbent made by combining cationic surfactants with montmorillonite. This adsorbent can selectively remove ...

Under US President Gerald Ford, the USA attempted the conversion in 1975 with the Metric Conversion Act, but his successor Ronald Reagan quickly dissolved ... of ice and ammonium chloride at ...

Three Indian teenagers from Indore have developed a mini-refrigerator that works without electricity, using salt as the key ...

Many people take electricity for granted. But in rural areas around the world, there are no electrical grids to provide power ...

Compared to water solutions with a limited amount of dissolved ions and solids ... cattle manure at 2020 and 3700 mg/L, compared to 700 and 2600 mg/L. 3.2. Ammonium Dissociation for NH 4 Cl Water ...

The regenerant solution contained approximately 80% methanol, 2% sodium chloride, and water. The resulting spent regenerant ... still bottoms samples were analyzed for fluoride content. The dissolved ...

Briefly, an equal amount of saturated ammonium persulfate solution was dropped into the mixed serum, stirring on ice until a precipitate was formed. The mixture was centrifuged at 12,000 × g for 30 ...