The present work is intended as a synthesis of fundamentals regarding the achievements of successive generation of refractory concretes. In order to reach this goal both the results of our own researches and information from literature have been used. A unitary concept is developed on binding system belonging to this category, on mechanisms and processes that take place during hardening and on the behavior of these systems during service.

In this paper, the relative humidity is monitored with weather station at the UPB ISB faculty during September-December 2009. In this paper we monitored the relative humidity, we plotted the values obtained and then we made a statistical analyzing of obtained date. After analyzing the data we notices that: the lowest humidity in September was recorded on September 04, 05 September 2009 at 17:00 worth 28 % and the highest value on September 6, 7 2009

POV-Ray is a freeware, stand-alone, world-class renderer that creates three-dimensional photo-realistic images taking as input a text file with the scene described in a script language known as POV-Ray Scene Description Language (SDL). Image synthesis languages like POV-Ray do not give detailed description of the surfaces of the objects they generate,and therefore it is quite difficult to use them for engineering computations. Rather than trying

This paper presents an identification method of the value of concentration in certain areas of rooms for edible mushroom culture medium, in the case where the introducing of the air represents the effect of the superposition of a flow convection (natural or artificial) and diffusion and of its recirculation, which acts as a feedback circuit. The result helps to understand how to conduct a recirculation phenomenon, and may constitute a basis for future

Computerized adaptive testing attempts to provide the most suitable question for an examinee depending on the examinee’s ability to achieve the best result. Maximum Likelihood Estimation (MLE) and Bayesian Likelihood Estimation (BLE) have been provided to solve ability estimation and have good results in the literature. The situation when the answer of an item does not conform with the examinee’s ability as expected nor standard derivation changes