Some common synonyms of precursor are forerunner, harbinger, and herald. While all these words mean “one that goes before or announces the coming of another,” precursor applies to a person or thing paving the way for the success or accomplishment of another.
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What is an example of a precursor?
Tyrosine. Tyrosine is a natural amino acid and a precursor to dopamine. (Dopamine is made from tyrosine.)
What are precursors?
Neurotransmitter precursors are nutritional supplements such as vitamins, minerals and amino acids that can increase the production of neurotransmitters. Each neurotransmitter has its own building blocks.
Is precursor a reactant?
Dehydroepiandrosterone is a precursor hormone, which means it has little biological effect on its own, but has powerful effects when converted into other hormones such as testosterone and oestradiol.
What is another word for precursor?
What are steroid precursors? Anabolic steroid precursors (also called prohormones) are substances that can be converted by the body into anabolic steroids. Anabolic steroids are a class of natural and synthetic (manufactured) substances that are related to the major male sex hormone, testosterone.
What is precursor method?
Precursor method involves atomic level mixing by forming a solid compound (precursor) in which the metals of the desired compound are present in the proper stoichiometry. For example, a mixed salt of an oxyacid (e.g. acetate) containing M and M’ in the ratio of 1:2 is formed in the case of formation of MM’2O4.
What is precursor material?
Definition. A substance that, following a reaction, becomes an intrinsic part of a product chemical. The material must be stable at room temperatures. During CVD process, the precursor material is vaporised.
What is the precursor of vitamin?
Beta-carotene is the pigment that gives carrots, sweet potatoes, and other yellow vegetables their characteristic coloring. This conjugated polyene also serves as a precursor that can be enzymatically converted into vitamin A in most animals and man.
What is the opposite of precursor?
Noun. ▲ Opposite of an earlier model. successor. heir.
What is a catalyst precursor?
Catalyst precursor A substance that requires further activation or reaction to produce the active catalyst.
What is precursor law?
(23) The term “immediate precursor” means a substance— (A) which the Attorney General has found to be and by regulation designated as being the principal compound used, or produced primarily for use, in the manufacture of a controlled substance; (B) which is an immediate chemical intermediary used or likely to be used …
What is a precursor in medicine?
Precursor: Forerunner. That which precedes or is derived from an available source. The term “precursor” is applied to an inactive substance converted to an active one (such as an enzyme, vitamin, or hormone). The term “precursor” applies to any chemical that is transformed into another.
What is the role of precursor in nano synthesis?
Herein, we analyze the compositions of the precursors in the formation of diverse ternary oxide nanoparticles and find that the precursor composition is a critical factor in the successful incorporation of two constituent metals in the synthesized ternary oxide nanoparticles.
Is Precurse a word?
Precurse definition To forerun or precede. (archaic) A prediction, a prognostication.
What’s a forebear?
Definition of forebear : ancestor, forefather also : precursor —usually used in plural His forebears fought in the American Civil War.
What is precursor physics?
Precursors are characteristic wave patterns caused by dispersion of an impulse’s frequency components as it propagates through a medium. Classically, precursors precede the main signal, although in certain situations they may also follow it.
How do you use the word precursor in a sentence?
Precursor sentence example. Bad breath can be a precursor to bad gums, and this can lead to gum disease. So far he may be fairly called the precursor of later utilitarianism. It can also serve as a precursor for a real pet in the future.
What is meant by sol gel method?
Sol–gel method Definition: The process of the settling of (nm sized) particles from a colloidal suspension onto a pre-existing surface, resulting in ceramic materials.
What is precursor in battery?
1 NMC precursors contain nickel, cobalt and manganese elements, and constitute together with lithium compounds, the starting materials for. the production of cathode materials for NMC-based lithium-ion batteries. 2 The cathode constitutes the “positive” side of a battery.
What is battery precursor material?
The battery industry requires nickel and cobalt to be supplied in specific chemical form for production of precursor material. In the case of both cobalt and nickel, this is generally in the form of hydrated metal sulphates (CoSO4. 7H2O and NiSO4.
What is cathode active material?
Cathode active materials are composed of lithium and metal. Active materials have different characteristics depending on type and ratio of metals. For example, Ni(Nickel) has high capacity, Mn(Manganese) and Co(Cobalt) has high safety and Al(Aluminum) increases power of a battery.
What is a precursor to vitamin C?
Glucuronate, the precursor of vitamin C, is directly formed from UDP-glucuronate in liver. FEBS J. 2006 Apr;273(7):1516-27.
Why is vitamin D called a vitamin?
Contrary to its name, vitamin D is actually not a vitamin but a hormone that is synthesized by sunlight. Vitamin D promotes the body’s absorption of calcium, which is essential for the normal development and maintenance of bones and teeth.
What is vitamin K called?
Phytonadione (vitamin K) is used to prevent bleeding in people with blood clotting problems or too little vitamin K in the body. Phytonadione is in a class of medications called vitamins.
What is a precursor event?
Thus, a precursor is an event or situation that, if a small set of behaviors or conditions had been slightly different, would have led to a consequential adverse event.