摘要:

A measuring and evaluation method was developed to make a rapid and non-contacting gauging of the coat-thickness of covered wires. It is described with the aid of aluminium coated steel wires. In preliminary tests lite β-backscattering principle was found as the best measuring method. With a gauging head developed for this prupose 20 probes were measured on 4 positions each staggered at 90° and the coat-thickness as well as the maxima and minima were calculated. A comparison with those values measured on conventional mode with a microscope showed a perfect consistency. The accuracy is better than ±0·01 mm. The time of investigation can be less than 1 minute and the apparatus can also be used for on-line gauging direct on drawing or coating plants. A proposal for a non-contacting measuring of the total diameter of the wires is made.

ISSN:0021-1915    

DOI:10.1080/10256018508623430

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

For wear measurements using thin layer activation information is necessary about the nuclide depth distribution in the activated materials. The nuclide concentration profiles as a result of iron activation by alphaparticles, deuterons, and protons have been determined at the Rossendorf cyclotron using iron foil stack.

ISSN:0021-1915    

DOI:10.1080/10256018508623431

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

Surfaces of materials are changed and damaged by processing, machining und use. In what follows a simple radiotracer method for testing of surfaces is described. The surfaces are puttied to fill the unevenesses und damages. The filling putty consists of a commercially available binder and a loading material and is labelled with99mTc or113mIn. The counting rales of reference and testing samples are measured and a value of the relative surface finish can be calculated. The method is adapted for the testing of surfaces of all varieties. The repeat standard deviation of a measurement result amounts to 5%.

ISSN:0021-1915    

DOI:10.1080/10256018508623432

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

The radioactive tracer technique is a possible means of obtaining flow rates. The principle is very simple:113mIn labelled single grains will be injected upstream into the flow individually at determined sequences of time. Its transit time between two positions of a known distance is measured, generally using scintillations detectors coupled with a special limit value switch, controling a short time meter in the first case. In the other case or simultaneously a multichannel analyser (NTA-1024) in multiscaling mode online coupled with a programmable calculator (EMG-666) was used. In this way it is possible to measure transit times < 1 s or flow rates > 5 m/s. The relative error of this measurement is less than 1%. The measuring system and some experimental results are represented.

ISSN:0021-1915    

DOI:10.1080/10256018508623433

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

A method for the detection of low-energy pulses in non-steady time series, in which the random variables have a Poisson distribution, is proposed. A criterion for the decision is given, whether a value belongs to the background or to the pulse. The efficiency of the method is demonstrated on simulated time series.

ISSN:0021-1915    

DOI:10.1080/10256018508623434

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

Sorption characteristics were determined of molecular sieve Zeolon 500 for106RuO4vapours. The sorption of106RuO4vapours decreased with increasing gas flow rate, it increased with increasing temperature. The sorption was found to be most efficient (penetration of 0.69%) at a flow rate of 0.25 l/min and a temperature of 300 °C. Sorption capacity up to 1% penetration was 76 mg Ru/g of the sorbent.106RuO4vapours were transformed into the gaseous phase during melting of a calcine prepared from a model waste solution following spent fuel reprocessing.

ISSN:0021-1915    

DOI:10.1080/10256018508623435

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

ISSN:0021-1915    

DOI:10.1080/10256018508623436

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

The behaviour of low concentrations of

ISSN:0021-1915    

DOI:10.1080/10256018508623437

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

Rh(III) is extractable from nitric acid solutions of fission products and other wastes with thioethers at elevated conditions. DRh-values > 1 can be reached. They strongly depend on extraction temperature and -time, on nitric acid concentration of the aqueous phase and on the kind of diluent for tlie thioether. The structure of alkylgroup substituents does not remarkable influence the extraction power of thioethers. Insertion of further donator groups (O, N) into the extractant caeses no further advantage. Co-reactions of nitric acid with the extractant seems to be of essential importance for the extraction mechanism of the thioethers.

ISSN:0021-1915    

DOI:10.1080/10256018508623438

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

ISSN:0021-1915    

DOI:10.1080/10256018508623439

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor