alfachemistry

Quantum dots, also known as semiconductor nanocrystals, are nanoscale materials composed of a small number of atoms.

Since the discovery of carbon nanotubes by Japanese physicist Sumio Iijima in 1991, the atomic structure and properties of carbon nanotubes have attracted great interest from scientists.

Batch culture The batch culture of microalgae has the advantages of simple operation and low cost, and is a commonly used cultivation method in the laboratory.

A plant extract refers to an active substance extracted from a natural plant. Plant extracts are the main raw materials for botanical preparations and can be used in nutritional supplements, health foods, cosmetics industries.

The antioxidant active ingredients of plant extracts mainly include alkaloids, saponins, vitamins, polyphenols, polypeptides and polysaccharides. Most of these ingredients are extracted from grains, herbs, vegetables and fruits.

Because people often come into contact with the outside world, normal breathing, external pollution and radiation exposure can cause free radicals in the human body.

Solvent dyes are a class of dyes that are soluble in organic solvents. And the dye structure contains less or no hydrophilic groups, so the solvent dye is insoluble in water but soluble in different types of organic solvents.

Advantages of Reactive Dyes Since the reactive dye is composed of parent dye, linking group and active group, it can form a strong covalent bond with the fiber during dyeing, and so it has a series of characteristics unmatched by other cellulose fiber...

Definition of reactive dyes Reactive dyes are a new class of dyes. Molecules of reactive dyes contain groups that are capable of chemically reacting with the fibers.

Since biological samples are mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen and so on.