TERMIUM Plus®

From: Translation Bureau

On social media

Consult the Government of Canada’s terminology data bank.

HEAT PULSE [11 records]

Record 1 2025-04-30

English

Subject field(s)
  • Analytical Chemistry
CONT

Matrix effects can be divided into two kinds, physical and chemical. Physical matrix effects depend on the physical properties of the sample and generally relate to the ablation step of LIBS [laser-induced breakdown spectroscopy]. That is, differences between the specific heat, latent heat of vaporization, thermal conductivity, absorption, etc., of different matrices can change the amount of an element ablated from one matrix compared with another matrix even though the properties of the ablation laser pulse remain constant.

French

Domaine(s)
  • Chimie analytique
CONT

Les effets de matrice physiques sont liés aux propriétés physiques du matériau ablaté (température de vaporisation, absorbance à la longueur d'onde du laser utilisé...).

Spanish

Save record 1

Record 2 2011-09-16

English

Subject field(s)
  • Welding - Various Processes
DEF

Pressure welding using the heat from an arc, usually by the rapid discharge of a capacitor; a pressure pulse is applied rapidly during or immediately following the electrical discharge. [Definition standardized by ISO. ]

OBS

percussion welding: term standardized by ISO; percussion welding; PEW: term and abbreviation standardized by the American Welding Society (AWS).

OBS

percussion welding; PEW: term and abbreviation standardized by the CSA International. Material reproduced with the permission of the copyright holder, the Canadian Standards Association (CSA), 178 Rexdale Blvd., Toronto, Ontario, Canada M9W 1R3. However, CSA shall not be responsible for the manner in which the information is presented, nor for any interpretations thereof. This CSA material may not have been updated to reflect amendments subsequently made to the original content. For further information, contact CSA International.

OBS

percussion welding; PEW: term and abbreviation officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Procédés de soudage divers
DEF

Procédé de soudage utilisant la chaleur fournie par un arc amorcé entre les pièces par une brève décharge d'énergie électrique, et une pression appliquée par percussion pendant ou immédiatement après la décharge. [Définition normalisée par la CSA International.]

OBS

Ce procédé permet de souder des fils de contacts électriques et des goujons sur des pièces fines ou massives, selon le cas.

OBS

soudage par percussion : terme normalisé par l'ISO.

OBS

soudage électrique par percussion; procédé PEW; soudage par décharge de condensateurs : termes normalisés par la CSA International. Reproduit avec l'autorisation de l'Association canadienne de normalisation (CSA), 178, boul. Rexdale, Toronto (Ontario), Canada M9W 1R3 (détentrice des droits d'auteur). La CSA décline toute responsabilité quant à la façon dont la matière est présentée et quant à toute interprétation pouvant en découler. L'information reproduite pourrait ne pas être à jour. Pour plus de renseignements, communiquer avec la CSA International.

OBS

procédé PEW; soudage à l'arc avec percussion : termes uniformisés par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 2

Record 3 2011-03-08

English

Subject field(s)
  • Soil Science
  • Scientific Measurements and Analyses
CONT

Error analysis of the heat pulse method for measuring soil heat capacity, diffusivity, and conductivity.

CONT

Since the low cost sensor technologies available present several limitations to their inclusion in this system, it was developed and implemented a low cost sensor, as described by Valente et al.(1997), based on the heat-pulse and capacitance methods. In the first method the maximum temperature rise measured at some distance from a line heat source can be used to determine the volumetric heat capacity and hence the water content of a porous media, such as soil. The second method relates the volumetric water content with the capacitance change of a probe, inserted in the soil, according to its dielectric properties. Simultaneous use of both methods improves sensor accuracy, gives built-in fault detection capability, and makes possible self-calibration procedures.

French

Domaine(s)
  • Science du sol
  • Mesures et analyse (Sciences)
CONT

Mesure de l'humidité du sol. On citera en particulier : - La méthode par prélèvement d'échantillons du sol [...] - La méthode neutronique (sonde à neutrons) [...]. - La méthode par choc thermique permettant d'évaluer la capacité calorifique du sol, laquelle dépend de la teneur en eau.

Spanish

Save record 3

Record 4 2003-02-26

English

Subject field(s)
  • Resistance Welding
CONT

Ultrapulse solid state pulse resistance welding is a process in which joints are produced electrically with little heat since the weld is completed in milliseconds. In many cases, ultrapulse welding can join metals where no other process would be practical or feasible. Ultrapulse is resistance welding, but with little or no melted nugget and with very little heat affect.

French

Domaine(s)
  • Soudage par résistance

Spanish

Save record 4

Record 5 2002-07-31

English

Subject field(s)
  • Printed Circuits and Microelectronics
DEF

Soldering a connection by melting the solder in the joint area by pulsing current through a high-resistance point applied to the joint area and the solder.

French

Domaine(s)
  • Circuits imprimés et micro-électronique

Spanish

Save record 5

Record 6 2002-06-05

English

Subject field(s)
  • Nuclear Science and Technology
  • CBRNE Weapons
DEF

The thermal radiation given off immediately following a nuclear explosion.

French

Domaine(s)
  • Sciences et techniques nucléaires
  • Armes CBRNE
DEF

Rayonnement thermique émis juste après une explosion nucléaire.

Spanish

Save record 6

Record 7 2002-01-04

English

Subject field(s)
  • Welding - Various Processes
DEF

One positive and one negative pulse of current within the same weld or heat time at a frequency lower than the power supply frequency from which it is obtained.

OBS

low frequency cycle (resistance welding): term standardized by the American Welding Association

French

Domaine(s)
  • Procédés de soudage divers
OBS

Un courant électrique peut être continu ou variable. Dans ce dernier cas, on distingue les courants périodiques [alternatif ou pulsatoire] et non périodiques.

Spanish

Save record 7

Record 8 2000-05-02

English

Subject field(s)
  • Arc Welding
DEF

Any arc welding method in which the current is pulsed to utilize the advantages of the spray mode of metal transfer at average currents equal to or less than the globular to spray transition current. [Definition standardized by the AWS.]

CONT

Pulsed spray welding is a variation of the MIG welding process that is capable of all-position welding at higher energy levels than short circuiting arc welding. The power source provides two current levels; a steady "background" level, which is too low to produce spray transfer; and a "pulsed peak" current, which is superimposed upon the background current at a regulated interval. The pulse peak is well above the transition current, and usually one drop is transferred during each pulse. The combination of the two levels of current produces a steady arc with axial spray transfer at effective welding currents below those required for conventional spray arc welding. Because the heat input is lower, this variation in operation is capable of welding thinner sections than are practical with the conventional spray transfer.

OBS

pulsed spray welding: term standardized by the American Welding Society (AWS).

French

Domaine(s)
  • Soudage à l'arc

Spanish

Save record 8

Record 9 1998-04-24

English

Subject field(s)
  • Space Centres
  • Space Exploration Equipment and Tools
CONT

Environmental Control Systems Trainer. Additional training in the operation of the environmental control system was provided by the environmental control systems trainer which was a heavy shell mock-up with a prototype spacecraft environmental system. The device used was delivered to NASA in November 1960 and installed in a man-rated vacuum chamber at the U. S. Naval Air Crew Equipment Laboratory in Philadelphia(fig. 10-1(1)). During December of 1960 and January of 1961, the astronauts participated in a program of system familiarization that included being exposed to a simulated reentry heat pulse and approximately 2 hours of the expected postlanding temperature. During these runs, the astronauts wore the pressure suits and became familiar with function of the suits when associated with the environmental control system. However, since a provision had been made for simulating the suit function in the procedures trainer, this type of training was not considered essential This was particularly true since the astronauts received further first-hand familiarization to the environmental control system by participating in the preflight checkout of the spacecraft environmental control system at the launch site.

French

Domaine(s)
  • Centres spatiaux
  • Équipement et outillage d'exploration spatiale
OBS

chambre à vide accessible à l'homme : terme extrait de la base de données du Centre national d'Études spatiales (Saclay - France).

Spanish

Save record 9

Record 10 1990-05-18

English

Subject field(s)
  • Horticulture

French

Domaine(s)
  • Horticulture
OBS

pour la mesure du courant de sève dans la tige des arbres et des plantes herbacées

OBS

Source : Agronome 1989 9 (4) p. 321.

Spanish

Save record 10

Record 11 1988-03-01

English

Subject field(s)
  • Rail Transport
CONT

... in the absence of any heat reading from a journal, a minimum deflection of one millimeter(which is called the pedestal pulse) will be produced on the tape to indicate the passage of an axle.

French

Domaine(s)
  • Transport par rail
CONT

Le signal forfaitaire permet, dans le cas des boîtes froides, d'assurer l'émission d'un niveau suffisant pour actionner les compteurs du bloc d'alarme et permettre une déviation appréciable de l'enregistreur.

Spanish

Save record 11

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

GCtranslate (available on the Government of Canada network only)

Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: