Uso recreativo da costa do Mar Negro da Rússia em Krasnodar Krai: significado e sensibilidade dos complexos naturais

The paper presents the results of a study of the current condition and prospects of development of sustainable tourism in the coastal zones of the Black Sea in Krasnodar Krai (Russia). The aim of the study is to give a basis for and develop a method for determining the level of recreational pressure on coastal zones. The research methods applied are the empirical and practical methods of comparison and systemic and comprehensive analysis. The analysis based on statistical techiniques establishes the primary indicators for assessing the sustainability of tourism development in coastal areas. The conclusions confirm that the establishment of protected natural areas and the promotion of environmentally responsible practices among tourists and local residents are necessary to conserve the natural heritage of the region.El artículo presenta los resultados de un estudio sobre la situación actual y las perspectivas de desarrollo del turismo sostenible en las zonas costeras del Mar Negro en Krasnodar Krai (Rusia). El objetivo del estudio es fundamentar y desarrollar un método para determinar el nivel de presión recreativa en las zonas costeras. Los métodos de investigación aplicados son los métodos empíricos y prácticos de comparación y análisis sistémico e integral. El análisis basado en técnicas estadísticas establece los principales indicadores para evaluar la sostenibilidad del desarrollo turístico en las zonas costeras. Las conclusiones confirman que el establecimiento de áreas naturales protegidas y la promoción de prácticas ambientalmente responsables entre los turistas y los residentes locales son necesarios para conservar el patrimonio natural de la región.O artigo apresenta os resultados de um estudo sobre a situação atual e as perspectivas de desenvolvimento do turismo sustentável nas zonas costeiras do Mar Negro em Krasnodar Krai (Rússia). O objetivo do estudo é fundamentar e desenvolver um método para determinar o nível de pressão recreativa nas zonas costeiras. Os métodos de pesquisa aplicados são os métodos empíricos e práticos de comparação e análise sistêmica e abrangente. A análise baseada em técnicas estatísticas estabelece os indicadores primários para avaliar a sustentabilidade do desenvolvimento do turismo nas áreas costeiras. As conclusões confirmam que a criação de áreas naturais protegidas e a promoção de práticas ambientalmente responsáveis junto dos turistas e residentes locais são necessárias para conservar o património natural da região

Developing of X65 steel coils making at Steckel mill using thermo-mechanical control process

The process of thermo-mechanically controlled rolling in the conditions of Steckel mill of Ferriera Valsider plant was developed for the first time for hot-rolled coils in the sizes of 12 mm × 1510 mm from steel of X65 grade for further production of electric welded pipes according to the API-5L standard. The developed process provides carrying out of the roughing-rolling in two stages to facilitating the forming of a smaller austenite grain and therefore more dispersed and homogeneous inherited ferrite structure in the finished rolled product. At the implementation of the process, the holddown of the temperature at the desired level at 1780 Steckel rolling mill has been carried out by adjusting the number of burners in furnace coilers. The process of controlled air cooling of rolled coils to a temperature of 400°C after winding in the developed technology for Steckel’s mill condition of Ferriera Valsider plant is applied for the first time that allowed to reduce the thickness of the air scale layer and to improve the surface quality. The performed research has been allowed to evaluate the feasibility of the operating equipment and to determine the possibility of coils fabrication related to the nowadays world requirements and satisfied to the demand of European electricwelded pipes manufacturers