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Experimental investigation of the Nd–Al–Si system

The isothermal section at 500 °C

Journal of Thermal Analysis and Calorimetry
Authors: Anna Maria Cardinale, Daniele Macciò, Stefano Delfino, and Adriana Saccone

the framework of a general interest in the study of the constitutional properties of light elements with rare-earth metals, an experimental investigation of the Nd–Al–Si isothermal section at 500 °C is the subject of this article

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.e., demostration periods) had a payout rate over 100% (some had a payout rate as high as 520%; Sévigny, Cloutier, Pelletier, & Ladoucer, 2005 ). In an experimental investigation, Bednarz, Delfabbro, and King ( 2013 ) found that participants who were randomly assigned to a

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Abstract  

It is unfortunately not too rare to find that fire investigators estimate flame temperatures by looking up a handbook value, which turns out to be the adiabatic flame temperature. Generally, the measurement of temperature in an industrial furnace is difficult, time consuming and expensive. Combustion of bagasse has its own special set of problems which appear to be due largely to the high moisture content and varying particle sizes of the fuel. The present experimental investigation is carried out to estimate the location of reaction zones and temperature fields in a bagasse fired furnace. Furnace is modeled by three dimensional CFD codes. Both experimental and the computational results show a considerable delay to ignition due to the drying of fuel. Also the location of maximum temperature zones and the pattern of flame propagation inside the furnace are clearly indicated.

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-linear programming , Heldermann Verlag Berlin, 1988. Abdalla K. M., Abu-Farsakh G.A., Barakat S. A. Experimental investigation of forcedistribution in high-strength bolts in extended end-plate connections, Steel and Composite

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Journal of Thermal Analysis and Calorimetry
Authors: Ljubiša Balanović, Dragan Manasijević, Dragana Živković, Aleksandra Mitovski, Nadežda Talijan, Duško Minić, and Živan Živković

structure in the alloys 40Al–59Zn–1Ge and 20Al–70Zn–1Ge. Tadjbakhche [ 9 ] experimentally investigated Al–Ge–Zn system using thermal and microstructural analysis, while Storokin et al. [ 10 ] determined the liquidus projection of the mentioned system

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Abstract  

The validity of the Poisson and theP(k) modified Poisson statistical density functions of observing k events in a short time interval t=T/n, proposed previously by others, is investigated experimentally in radioactive decay detection for various measuring times, T. The experiments to measure radioactive decay were performed with 89my (T1/2=16.06 s), using a multichannel analyzer operating in the multiscaling mode. According to the results, Poisson statistics adequately describes the counting experiment for short measuring times (up to T<0.5 T1/2) and its application is recommended. However, analysis of the data demonstrated, with confidence, that for long measurements (T>1 T1/2) Poisson distribution is not valid and the modified Poisson function is preferable.

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Abstract  

At room-temperature and atmospheric pressure, using electrode disks of various sizes, under the action 4 7Vdc eletric field, we gettered tritium gas from 2.2L of air containing (0.15 18.61)×108 Bq of tritium and (3000 12000) ppm of moisture during 50 hours or so the efficiency of gettering tritium was over 95%. Applying liquid scintillation counting method, we measured the tritium in the disks after gettering, and found that the amounts of tritium in the disks were equal to those reduced in the tested tritiated air.

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Abstract  

The magnesium-cerium system has been partially revised in the Ce-rich and Mg-rich regions by using results obtained with the Smith thermal analysis (STA) technique. Nine alloys were examined and, after the thermal measurements,were subjected to phase analysis by means of X-ray powder diffraction (XRD), optical(LOM) and scanning electron microscopy (SEM), and electron probe microanalysis (EPMA).The coordinates of the invariant reactions, many of them very close to each other, were established and compared with literature data where a call for a deeper investigation was proposed as the thermal values were open to different interpretations.

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Abstract  

This paper investigates the simultaneous reduction and oxidation reactions of uranium in hydrochloric acid media. The redox reactions were carried out in a cell fitted with a cation exchange membrane and hexavalent uranium was reduced to the tetravalent state in the cathode chamber. The reverse reaction was carried out in the anode side of the cell. The reaction rate was found to be independent of the uranium concentration and the extent of reaction was linear with time. There is evidence of uranium flux across the membrane.

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Abstract  

In this study, radiocesium sorption on ceramic clay was investigated as a function of particle size and initial 137Cs concentration using a batch method. Ceramic clay samples taken from the Söğüt(İnisar) clay deposit were composed of kaolinite, dickite and quartz. The equilibrium time and the liquid–solid ratio were determined as 60 min and 250 mL g−1, respectively. The distribution coefficients (K d) for variable liquid–solid ratio and the percentage adsorption (P Ad) were calculated. The values of K d and P Ad ranged from 483 to 3165 mL g−1 and 34–93%, respectively. The K d and P Ad values increased with increasing particle size, but decreased with increasing initial concentration. The sorption data were interpreted in terms of a Langmuir isotherm. The results indicated that the Söğüt(İnhisar) ceramic clay has good sorption capacity for cesium.

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