primary structure


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primary structure

[′prī‚mer·ē ′strək·chər]
(aerospace engineering)
The main framework, of an aircraft including fittings and attachments; any structural member whose failure would seriously impair the safety of the missile is a part of the primary structure.
(biochemistry)
The sequence of amino acids in the molecule of a protein or a peptide.
(geology)
A structure, in an igneous rock, that formed at the same time as the rock, but before its final consolidation.
(organic chemistry)
The chemical structure of a polymer chain.

primary structure

Those structures of the airplane whose failure would seriously endanger the safety of the airplane. It includes the fuselage, wings, control surfaces, and engine mounts.
References in periodicals archive ?
For mitigating the vibration of the primary structure when subjected to the excitation force F, [H.sub.2] norm is minimized from F/[k.sub.s] to the deformation of the primary structure and [x.sub.s] is defined as
(ii) Primary structure. The primary structure of the enzyme had low homology with other serine-carboxyl peptidases including physarolisin I (sequence identity, 16%), but the catalytic residues (a Ser-Glu-Asp catalytic triad and an additional Asp) and the [Ca.sup.2+]-binding site Asp residues were well conserved.
Highlight areas where the primary structures differ (amino acids nos.
From the factor analysis, it has been found that among three primary properties of carbon black considered in the present study, aggregate size ([N.sub.2]SA) and primary structure (COAN) carried the most importance for all application properties.
The two antibodies that were chosen were a monoclonal antibody specific for an epitope in the mid portion of the cTnI primary structure (residues 8791, cell line 8E10; HyTest), and a peptide affinity-purified goat polyclonal antibody specific for residues 20-39 (Bio Pacific).
The single particle impact damper dissipates energy by the impacts between the single solid mass and the primary structure. Consequently, it will produce high level of noise during the impact process, and the large contact forces will result in material deterioration and local deformation accompanying plastic collisions.
Alcan Global ATI and Bombardier, one of the world's largest aircraft manufacturers, have entered into a long-term agreement for the exclusive supply of AIRWARE(TM), Alcan's advanced aluminum-lithium alloy technology, to provide primary structure for the all-new CSeries aircraft.
A Neath Port Talbot council spokeswoman said yesterday: "A structural assessment has confirmed very severe damage has resulted to the building fabric and primary structure of the pool hall.
Your students should realize that the primary structure of the DNA molecule is shown by the sequence of nitrogen bases on the cords, thus the colors.
Primary structure and functional expression of a cDNA encoding the thiazide-sensitive, electroneutral sodium-chloride cotransporter.
This primary structure carries purlins and rafters in the normal way, with the rafters strutted at the same angle as the struts on the tied portals, creating in effect an inverted ridge that acts as a continuous lantern because, above it, the real ridge is defined by a motorized greenhouse glazing system that can be thrown open on hot days to encourage cooling convection currents.
They have made huge strides by focusing on drive chain technology, but I think there is a shared understanding that in order to meet their future obligations they will have to take significant weight out of the primary structure.'