This second edition cancels and replaces the first edition (ISO 1673:1978). Gives recommendations for the storage, with or without the use of artificial refrigeration, of onions of the species Allium cepa Linnaeus, intended for long-term conservation and consumption in the fresh state. Information on the limits of application of ISO 1673 are given in annex A.
Information technology — SGML support facilities — Registration procedures for public text owner ide...
This International Standard applies to the assignment of unique owner prefixes to owners of public text conforming to ISO 8879. It describes the procedures whereby such assignments are made, and the method of constructing registered owner names from them. Procedures for self-assignment of owner prefixes by standards bodies and other organizations are also specified.
NOTE 2 Examples of registered…
Semiconductor convertors - General requirements and line commutated convertors - Part 1-2: Applicati...
This report gives guidance on variations to the specifications in IEC 60146-1-1 to enable the specification to be extended in a controlled form for special cases. Background information is also given on technical points which should facilitate the use of IEC 60146-1-1.
It primarily covers line commutated convertors and is not in itself a specification, except as regards certain auxiliary…
Convertisseurs à semiconducteurs - Spécifications communes et convertisseurs commutés par le réseau ...
Donne des indications sur des variantes aux spécifications de la CEI 60146-1-1, afin de permettre leur extension de manière coordonnée pour les cas spéciaux. Il donne aussi des informations techniques complémentaires destinées à faciliter la compréhension de la CEI 60146-1-1.
Concerne principalement les convertisseurs commutés par le réseau et n'est pas une norme, sauf en ce qui concerne…
Acoustique — Méthodes de mesurage pour silencieux en conduit — Perte d'insertion, bruit d'...
La présente Norme internationale prescrit la méthode de substitution pour déterminer la perte d'insertion de silencieux en conduit. Elle fixe les exigences pour déterminer : -- la perte d'insertion de silencieux en présence et en l'absence d'écoulement d'air, par bande de fréquences; -- le niveau de puissance acoustique par bande de fréquences du bruit d'écoulement…
Steel and iron — Determination of chromium content — Flame atomic absorption spectrometric method
The publication of ISO 10138 gives rise to the cancellation of ISO 4936:1984. The method described determines chromium in non-alloy and low-alloy steels and iron. It is applicable to chromium contents between 0,002 % (m/m) and 2,0 % (m/m). Specifies normative references, principle, reagents, apparatus, sampling, procedure, expression of results and test report. Procedures for the determination of…
Specifies the functional requirements. Is not intended to specify equipment design. Gives certain criteria that are known to be essential for efficient operation. Should be applied with due reference to national regulations. To avoid any accidental contamination, the unit should only be used to supply aircraft with potable water. The informative annex A gives a bibliography.
