Browse

The authors are aiming to review the work related to monitoring of environmental factors from Braila in Romania. To maintain a balance between the natural environment, its resources and the man, it is necessary to develop a strategic planning, so there can be always a stable relationship between natural habitat and the human population. This planned strategy elaborated to address the environmental issues was established at the Ministerial Conference "E nvironment for Europe" held in Lucerne, Switzerland, and is wa...

Concrete and mortar made with Portland cement can be damaged when exposed to solutions containing sulphate. Waste water ofte n contains sulphuric bacteria, and so the piping is frequently damage due to sulphate attack. In case of concrete sewer pipes this phenomenon is caused mainly by the sulphur-o xidising and sulphate-reducing bacteria that are forming part of the biological circulation of sulphur and its compounds in biosphere. These bacteria take part in the dissimilatory part of this cycle and the bacterial ...

The cement as a building material significan tly affects the environment throughout the whole life cycle. The environmental assessm ent of products should be a factor of importance in term of protection of the e nvironment and human safety. Environmental assessment of type I which determines the criteria for materials and products is the most used evaluation process in Slovak Republic. Cements environmental criteri a within the Slovak eco-lab elling process include the energy consumption limitation for production ...

In this paper we emphasize the main methods of data fusion with potential applications in navigation systems with micro and nano sensors. In the introduction are outlined some basic features of data fusion process. Further the work is st ructured as it follows: 2) Architectures for sensor data fusion, 3) M odels for sensor data fusion; 4) Sensor data fusion methods, 5) Sensor management. At the point 2 of this paper are presented information regarding different types of data fusion architectures, and also the crit...

The paper deals with the description of actual technologies and trends in the development of miniaturized accelerometers used in inertial naviga tion systems. At the technology levels discussions are made ar ound the micro-electro-mechanical systems (MEMS), nano- electro-mechanical systems (NEMS), micro-opto-electro-mechanical systems (MOEMS), and nano-opto-electro- mechanical systems (NOEMS). Miniature accelerometers use two main methods of de tection: 1) moving or bending under the action of an acceleration plat...

Building industry has an essential share in depletion of environment and, after food production, belongs to the largest consumer of raw materials. Exploitation, production or transportation of building materials, as well as build-up, operation or demolition of buildings requires massive amounts of energy and results in huge amounts of greenhouse or acidifying gasses emission, par ticipates in depletion of ozone layer, eutrophication processes or photochemical ozone creation. Selection of building materials, as pri...

This paper aims to highlight the concerns about the waste management and at the same time highlighting its regional peculiarities. Municipal waste management methods in use today are related both to the waste that are being generated and collected, as well as waste that are generated and then collected . Collected waste are waste that are being generated and then collected by the sanita tion services. Waste uncollected is waste generated but not collected by sanitation services. The methods that are used, such as ...

In this article we tried to emphasize the impor tance of labor within the tourism, because the workforce occupation is among the most serious problems with which is facing the world today, regardless of the degree of development of the country, because, on one hand, the level, structures and efficien cy of workforce occupation reflects the macroeconomic performances, as well as and the capacity of economic system to capitalize the available resources, and on the other hand, the labor is the only measure of individ...