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Fresh, hardened and durability properties of sodium carbonate-activated Algerian slag exposed to sulfate and acid attacks | This paper investigates the use of Na2CO3 as an alkaline activator on the durability of the alkali-activated slag (AAS) mortar toward sulfates and acids.
3 days ago · Fentanyl is a highly potent synthetic piperidine opioid primarily used as an analgesic. It is 20 to 40 times more potent than heroin and 100 times more potent than morphine; [8] its primary clinical utility is in pain management for cancer patients and those recovering from painful surgeries. [9] [10] Fentanyl is also used as a sedative. [11]
1 day ago · e−. , or. β−. in nuclear reactions) is a subatomic particle with a negative one elementary electric charge. [13] Electrons belong to the first generation of the lepton particle family, [14] and are generally thought to be elementary particles because they have no known components or substructure. [1]
1 day ago · Sodium barbital and barbital have also been used as pH buffers for biological research, e.g., in immuno-electrophoresis or in fixative solutions. Classification. Barbiturates are classified based on the duration of action. Examples of each class include: Ultra short acting (30 minutes): thiopentone, methohexitone
2 days ago · Sulfate sind eine Gruppe chemischer Verbindungen, die sich von der Schwefelsäure ableiten. Aufteilen lässt sich die Gruppe in Schwefelsäure- Salze und Schwefelsäure- Ester. Die Schwefelsäure besitzt zwei Hydroxy-Gruppen (OH-Gruppen), deren Wasserstoff-Atome abgespalten oder getauscht werden können.
2 days ago · Biochemistry. Enzymes ( / ˈɛnzaɪmz /) are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products.
5 days ago · copper (Cu), chemical element, a reddish, extremely ductile metal of Group 11 (Ib) of the periodic table that is an unusually good conductor of electricity and heat. Copper is found in the free metallic state in nature. This native copper was first used (c. 8000 bce) as a substitute for stone by Neolithic (New Stone Age) humans.
