Respiratory protective devices — Human factors — Part 4: Work of breathing and breathing resistance:...
This document describes how to calculate the work performed by a person's respiratory muscles with and without the external respiratory impediments that are imposed by RPD of all kinds, except diving equipment. This Document describes how much additional impediment people can tolerate and contains values that can be used to judge the acceptability of an RPD.
NOTE These calculations are…
International Electrotechnical Vocabulary (IEV) - Part 171: Digital technology - Fundamental concept...
IEC 60050-171:2019 gives the general terminology used in digital technology, as well as general terms pertaining to specific applications and associated technologies. This first edition cancels and replaces Section 101-12 of IEC 60050-101:1998 and Sections 714-21 to 714-24 of IEC 60050-714:1992.
It has the status of a horizontal standard in accordance with IEC Guide 108.
This terminology is…
Vocabulaire Electrotechnique International (IEV) - Partie 171: Technologies numériques - Concepts fo...
IEC 60050-171:2019 donne la terminologie générale utilisée dans le domaine des technologies numériques, ainsi que les termes généraux relatifs à des applications particulières et technologies associées. Cette première édition annule et remplace la Section 101-12 de l’IEC 60050-101:1998 et les Sections 714-21 à 714-24 de l’IEC 60050-714:1992. Cette terminologie est en accord avec la terminologie…
IEC 61315:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 61315:2019 is applicable to instruments measuring radiant power emitted from sources that are typical for the fibre…
This document specifies requirements and test methods for reusable intra-oral mirrors with a coated glass reflecting surface used for dental purposes in the oral cavity.
In addition, specific requirements for metallic casing and metallic handles are given.
Le présent document spécifie les exigences et les méthodes d'essai relatives aux miroirs endobuccaux réutilisables pourvus d'une surface de verre revêtue d'une couche réfléchissante, utilisés pour le travail en bouche en médecine bucco-dentaire.
Des exigences spécifiques pour les boîtiers et les manches en métal sont également données.
