The ageing behaviour of amorphous silicon (a-Si) devices is investigated in dependence of different light and temperature conditions. Eight a-Si mini-modules are illuminated and kept at constant temperature in an environmental chamber. The ageing behaviour is characterised in terms of a temperature-dependent irradiance dose rather than the exposure time or irradiance dependence in order to inve...

− In this paper a cost-effective method for measuring transportation velocity and the velocity profile of a material flow of powdery solids inside a pipe is presented. For the measurement, artificial perturbations are brought into the mass flow and the effects of these perturbations are acquired and correlated at measurement sections. The velocity profile is calculated with the knowledge of the...

Under unequal variances on normally distributed responses, the problem of detecting the lowest dose level of treatment for which the mean response is greater than that of Placebo is considered. A general framework of single-stage contrast combined family is constructed, which can be used to remove the influence of unequal variances. Based on this framework, several such families are considered ...

Mixed hardwood chips were treated with lignin-degrading fungi to study the effect of fungal pretreatment on bleaching characteristics of kraft pulp. Pretreated wood chips were subjected to reduced active alkali doses in comparison to untreated chips. Comparable results were obtained for pretreated chips with reduced alkali dose as was obtained with higher dose of alkali in case of untreated chi...

In this study 222Rn (Radon) measurement were performed in water and soil gas and also both 222Rn and 220Rn concentrations were determined in air of Mansa and Muktsar district of Punjab, India. The data then used for calculation of the annual effective dose for health risk assessment of public. Totally 35 locations have been selected for the measurements. All measurements (222Rn and 220Rn) were ...

Computational phantoms are commonly used in internal radiation dosimetry to assess the amount and distribution pattern of energy deposited in various parts of the human body from different internal radiation sources. Radiation dose assessments are commonly performed on predetermined reference computational phantoms while the argument for individualized patient-specific radiation dosimetry exist...