There are worldwide economic operators who use during the production process hazard substances which can lead to major accidents with severe consequences regarding health, the safety of persons and of the environment. This article describes a part of the measures imposed by the European legislation to prevent, prepare and for the responsibility of such technologies owners in order to identify, evaluate the risks and limit the consequences of major accidents in which are involved hazard substances. It is also a guide line for the companies which deal with goods transport (internal and international traffic) to know and to respect the most recent laws which were included in the new structure of The European Agreement referring to international transport of hazard substances and to run the activities which influence the transport security.

The first part of the paper presents the equivalent dynamical model of the forklift system in the most difficult work situations: descending on a slope braking of the vehicle in translational motion and acceleration of the fork while lifting the load. Based on the dynamical model are elaborated the mathematical models describing the dynamical behavior of the forklift truck during moving or working. These models deliver the criteria for the overturning stability. The last section of the paper presents a measurement installation developed for experimental research on the dynamics of the fork lift truck.

Energy and environmental problems are closely related, since it is nearly impossible to produce, transport, or consume energy without significant environmental impact. The environmental problems directly related to energy production and consumption includes air pollution, climate change, water pollution, thermal pollution, and solid waste disposal. The emission of air pollutants from fossil fuel combustion is the major cause of urban air pollution. Burning fossil fuels is also the main contributor to the emission of greenhouse gases.

Interface damage characterization and interlaminar failure analysis of sandwich specimens with an initial interlaminar delamination in between the face sheet and the core are obtained by using interface cohesive elements. Peel tests reveal interesting particularities on damage localization and strain variation while damage is completed. The critical strain at damage initiation, as well as the critical displacement when damage is finalized, is established by using the digital image correlation method (DIC) in the cohesive zone. After the calibration of the finite element model through experimental results, the use of cohesive elements together with a linear or exponential softening law is analyzing the influence of the critical material parameters on the damage process and of the damping factor of the exponential law on the strain distribution in the core at different locations along the interface.

The paper wants to develop a software simulator for a presumptive microprocessor, to allow better understanding of the architecture and general structure of the microprocessor, as well as the functional model of such an integrated circuit with major importance in a computing system, due to its functions.

The paper presents a method for monitoring radon concentration in air using a detection chamber as transducer, an embedded system based on ATmega16 microcontroller for measuring the transducer output and a GPRS modem for sending measurement data to a remote center.

The increase of manufacturing accuracy on the machine tools depends mainly on the motion accuracy of the mobile elements as: rams, tables, pads, etc., accuracy that can be achieved, firstly, by minimization of the friction in the guide ways. This problem is solved by replacing the sliding friction with the rolling friction but especially by using the hydrostatic guide ways, where the contact surfaces are separated by a continuous film of fluid under pressure. The present paper describes mathematical modeling of hydrostatic guide ways having a porous restrictor in order to analyze the influence of functional parameters on the film lubricant thickness.

The inspection and estimation of the length of residual life of the equipment under pressure affected by corrosion, represents a subject of a greater importance. The paper presents several general problems of the API 579 standard, an overview of the methods necessary to be done for the technical assessment of the equipment under pressure, and also the evaluation of the technical estate of a recipient affected by corrosion using the standard API RP 579, concepts of the broking mechanics and the critical energy principle.

The paper presents authors' experience with the assisted assessment of student (pupils, students, or adults), the assisted methods applied locally and online. The authors of the present material effectively apply these methods for about ten years using different systems. The results are clearly positive and would not justify further activity, but as in any business there is something concrete that can be improved further. These are general for all applications studied and applied to the present like the systems Claroline, Sakai, Netschool, Moodle, and even the platform currently being in the stage of implementation in Romania, INSAM. But the examples are made for the platforms MOODLE and INSAM, for practical reasons, namely MOODLE has been applied extensively in recent years and INSAM was studied as a new element in the Romanian market.

On-line control of great dimensions sheet form products, e.g. paper sheet, involves the existence of some sensors which are moved across the sheet. Consequently, some parameters, e.g. impurities amount on surface unit, must be measured off line with a representative sample; the dimensions of the sample are surfaces impurities amount functions. This paper presents a preliminary analysis method of surface impurities amount in the purpose of determining the sample dimensions.

This study focuses on the mapping of vulnerable areas to agricultural pollution of Bonoua area where groundwater are envisaged to support the District of Abidjan. Thus to achieve this, the methodological approach adopted involve the use of GIS functionality combined with multi-criteria analysis method. The analysis of groundwater vulnerability map to nitrate in the region of Bonoua highlights five vulnerability classes ranging from very low to very high. The class of "medium vulnerability" is the most dominant and represents 44.21% of the mapped areas. This vulnerability map was validated using the measured nitrate levels in groundwater.

The optical techniques are very suited for different investigations concerning the elastic contact between two bodies. Using such an optical method the authors have managed to construct a very simple and useful transducer which to provide instantaneous information concerning the loads applied on different bodies. The transducer presented in this paper is specialized for elastic contact force measurements but, using the same principle, it is possible to get any information about the elastic contact.

The cages for high speed precision bearings are mainly achieved from textolite, a material made of cotton fabric impregnated with phenolic resins. In our country, the textolite needed to manufacture the bearings is called stratitex.

To realize the standardized profiles is using special machines. These special machines are presses which makes the cross section profile by drawing a semi mould. This paper presents a method to align of guide columns press of 2500 tf. Was used a numerical model software, specialized in finite element analysis FEM, Solid Works COSMOS/M. Meshing was done using SOLID volume elements, resulting a total of 39000 elements.

This paper aims to define specific elements of major risk management and represents a necessary technical support for people involved in analysis and risk assessment and as well a guidance material and information to other persons and organizations directly involved in the operation of any industrial activities working with hazardous substances which are used in quantities sufficient to produce major accidents.

The specifics of the process of the material moisture-heat treatment in the sectional heat exchangers have been analyzed. An operation algorithm of an electronic system for control of energy fluxes in the sectional heat exchangers has been created. An algorithm for modeling the process of moisture-heat treatment of the material in the sectional heat exchangers has been developed. Based on the presented algorithms, a specialized software product in the Visual Studio 2010 environment has been developed. A structure of the electronic system for control of energy fluxes in the sectional heat exchangers has been developed.

The simplicity, reliability and low cost of the asynchronous generators make them suitable (compared to the synchronous ones) for use as autonomous generators especially when lower load power is applied. This explains the purpose of the present paper which is to analyze a feasible application of asynchronous generators with practical value as a powering element of an inductive-capacitive current stabilizer. Analytical studies were carried out using a complex method for analysis and research of electromagnetic circuits. The obtained ratios justify the assumption of complementarity of the two systems (parametric current source and autonomous asynchronous generator) in their joint work. Thus, the special capacity for asynchronous generator excitation becomes irrelevant. The experimental checks confirm the analytical results.

A parameter denoted “Critical Position Offset Angle” – CPOA is proposed in this paper, developed as a new approach for assessing the accuracy of multiaxial HCF models based on the angle difference between the predicted critical plane and the plane where the equivalent stress reaches its peak value. A number of 11 models are compared using this parameter, by applying them to simulated multiaxial tension-torsion loadings with different grades of nonproportionality. A wider scatter in CPOA values is identified in cases of loading with dominant shear stress. Overall, the equivalent stress models give the best results.

Removal of Basic Red 46 from aqueous media was achieved onto Animal Bone Meal as a new low cost adsorbent. The latter was characterized by Infra-Red and X-ray diffraction. The adsorption of Basic Red 46 was occurred by studying the effects of adsorbent amount, dye concentration, contact time, pH media and temperature. The adsorption rate data were analyzed using the pseudo-first order and the pseudo-second order kinetics models to determine adsorption rate constants. The isotherms of adsorption data were analyzed by both adsorption isotherm models Langmuir and Freundlich. The monolayer adsorption capacity is 76 mg/g of animal bone meal. Nearly 30 minutes of contact time was found to be sufficient for the dye adsorption to reach equilibrium. Thermodynamic parameters were also evaluated for the dye-adsorbent system and revealed that the adsorption process is endothermic in nature. All results found concluded that animal bone meal could be effectively employed as effective new low cost adsorbent for the removal textile dyes from aqueous solutions.

The paper presents a program in Microsoft Visual C++ 2008, how control an USB interface board used to command a unipolar stepper motor. The stepper motor driver is made with a dedicated integrate circuit. This unit is used to control a photovoltaic panel solar orientation. The orientation angle is dictated by a sensor made of two photodiodes.

Echocardiography analysis technique has played an important role in correctly establishing the diagnosis. Moreover, microbubbles (MB) or contrast agent was designed to cross the pulmonary capillary beds into the left ventricle so as to allow the left ventricular contrast enhancement and to study its microcirculation. In this study we computed density distribution MB in the left ventricle (LV) between the frames end-systole and end-diastole for two diagnoses, pulmonary hypertension and one that attest a healthy LV. The process of evaluating the MB was computed inside the LV cavity using density distribution in function by radius of MB experimented in pixels.