What is Etruscan granulation?

Colloidal or eutectic soldering was used by the Etruscans, and employs a colloidal mixture of tragacanth gum and copper salts. The mixture lowers the melting points of both granules and base, and causes the copper to diffuse into both at the point of contact, creating a strong metallic bond.

What does the term granulation mean when working with gold?

Granulation (from Latin: granum = “grain”) is a goldsmith’s technique whereby the surface of a jewel is decorated with small spheres of precious metal, named granules, according to a design pattern. Granulation is probably the most mysterious and fascinating of ancient decorative techniques.

How do you do granulation?

What is granulation?

1. Place pieces of fluxed wires into small depressions in a charcoal block to stop the balls from rolling away once formed.
2. Heat the wires using a torch until they melt – you’ll see them turn into spheres.
3. If you want them all the same size, you can use small jump rings.

What are the types of granulation?

√ Granulation technique is broadly classified into two types, dry granulation and wet granulation, with wet granulation being the most widely used granulation technique.

What is granulation process?

Granulation is the process of forming grains or granules from a powdery or solid substance, producing a granular material. Typically, granulation involves agglomeration of fine particles into larger granules, typically of size range between 0.2 and 4.0 mm depending on their subsequent use.

What is the meaning of granulation?

Granulation: That part of the healing process in which lumpy, pink tissue containing new connective tissue and capillaries forms around the edges of a wound.

What is granulation and its types?

Granulation process can be divided into two types: wet granulation that utilize a liquid in the process and dry granulation that requires no liquid. The type of process selection requires thorough knowledge of physicochemical properties of the drug, excipients, required flow and release properties, to name a few.

What is the principle of granulation?

Granulation is a process in which powder particles are made to adhere to each other, resulting in larger, multi-particle entities, so called granules. If such a process is performed without adding liquids, this is called dry granulation.

Why granulation is needed?

Granulation is a key processing step in the production of many solid dosage drugs. It is often necessary to convert powdered drug formulations into a physical form that has improved flow and compaction characteristics to produce tablets with uniform content and consistent hardness and other properties.

What causes granulation?

Granulation tissue formation is part of a normal healing process. Under certain conditions, such as infection, self-mutilation, or a local reaction to a chronically implanted, foreign material, this tissue grows uncontrollably and becomes very vascular and secretive.

Which is the best definition of granulation tissue?

Granulation Tissue Definition. Granulation tissue is reddish connective tissue that forms on the surface of a wound when the wound is healing. Clinicians observe how granulation tissue is forming on a wound in order to assess how well the injury is being repaired by the body.

Where did the idea of granulation come from?

— Jonathan Schifman, Popular Mechanics, 16 Aug. 2016 Thus, reliefs adorning a bronze mirror emulate Chinese models; the makers of gold earrings used a granulation technique that traveled from the Mediterranean along the Silk Road. — Lee Lawrence, WSJ, 30 Sep. 2017

How is granulation used in the chemical industry?

It is applied in several technological processes in the chemical and pharmaceutical industries. Typically, granulation involves agglomeration of fine particles into larger granules, typically of size range between 0.2 and 4.0 mm depending on their subsequent use.

Is there such a thing as too much granulation?

Sometimes, too much granulation tissue grows over a wound, leaving an excess of bumpy, shiny, red tissue called “proud flesh”. Other terms to describe proud flesh include hypergranulation, hyperplasia of granulation, and exuberant granulation.