closed chain

• Termo usado em química e física para descrever uma estrutura molecular na qual os átomos estão ligados formando um anel ou laço, em uma disposição cíclica, em vez de uma cadeia aberta.

A term used in chemistry and physics to describe a molecular structure where atoms are connected in a ring or loop, forming a cyclic arrangement rather than an open chain.

1. Closed kinematic chainC1formal

   A mechanical system where the links and joints form a closed loop, meaning the end of the chain is connected back to its base.

   Cadeia cinemática fechada

   • Robotic arms often use a closed chain design for increased stability.
   • The bicycle frame is an example of a closed chain structure.
   • Engineers analyzed the closed chain mechanism to reduce vibration.

2. Closed chemical chainC2formal

   A molecular structure where atoms are arranged in a ring or cycle, such as in cyclic compounds.

   cadeia fechada

   • Benzene is a classic example of a closed chain molecule.
   • Closed chain hydrocarbons are also known as cycloalkanes.
   • The stability of the closed chain structure affects its chemical reactivity.

3. Closed chain in biologyC2formal

   A series of interconnected biological processes or reactions that form a cycle, with no free ends.

   cadeia fechada

   • The Krebs cycle is a closed chain of metabolic reactions.
   • Closed chain feedback loops regulate hormone levels in the body.
   • Ecologists study closed chain nutrient cycles in ecosystems.