Polarization and Depolarization Current (PDC) testing is a non-destructive dielectric testing method to determine the conductivity of insulations. It is one of the dielectric d iagnostic techniques based on time domain measurement. PDC measurement technique has gained immense popularity due to its ability to assess the condition of HV insulation. PDC measurement can provide information about th...

Received Aug 11, 2017 Revised Oct 22, 2017 Accepted Nov 4, 2017 This article introduces an ultra-wideband (UWB) shifted arc antenna, designed using Rogers RT-5880 Duroid substrate for the human detection behind the wall. The frequency for this proposed antenna ranges from 2.8 15.6GHz with the gain of around 6.05dB. A high gain for antenna has been achieved by the implementation of defected grou...

The objectives of the present study were to evaluate the effects of scrotal insulation on sperm production, semen quality, and testicular echotexture in Bos indicus and Bos indicus x Bos taurus crossbred bulls. In one experiment, B. indicus bulls (n=12) were allocated to control and whole-scrotum insulation groups, while in a second experiment, crossbred bulls (n=21) were allocated into control...

Problem statement. The paper explores ways of energy saving in buildings, namely, the compliance regulatory framework with European standards, possibilities reducing heat losses during transportation carriers through pipelines on example supply systems and operation buildings structures. second part article presents results analytical studies various heat-insulating materials that are most comm...

The objective of this paper is to compare the thermal behavior a light frame timber wall by measuring 15 test samples with various insulation materials versus theoretical simulation use software. This work establishes variance between two different methods measure transmittance coefficient walls. It verified that mean percentage alteration 4.25%. Furthermore, approach proved software, additiona...

Conventional dielectric response measurement techniques, for instance, recovery voltage measurement (RVM), frequency domain spectroscopy (FDS) and polarization–depolarization current (PDC) are effective nondestructive insulation monitoring techniques for oil-impregnated power transformers. Previous studies have focused mainly on some single type of dielectric measurement method. However, the co...

This paper gives an overview of three topics related to sound insulation in buildings. The first project included laboratory and field measurements of sound insulation against aircraft noise. As well as various technical papers, the project produced software to help in the design of adequate sound insulation. In a second project, re-analysis of survey results allowed the development of a ration...

We consider the motion of a discrete random surface interacting by exclusion with a random wall. The heights of the wall at the sites of Z are i.i.d. random variables. Fixed the wall configuration, the dynamics is given by the serial harness process which is not allowed to go below the wall. We study the effect of the distribution of the wall heights on the repulsion speed.

A task-specific exposure matrix was designed for workers installing building insulation materials. A priori, a matrix element was defined by type of task (installer or helper), type of work area (attic spaces or wall cavities) and type of insulation material (slabs from mineral wool, fiberglass or flax; loose-fill cellulosic material or perlite). In the laboratory a mock-up (full scale) of a on...