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Environmental concerns related to the implementation of circular economy has led to the development of new generations of materials. Interest in polymer composites reinforced with natural-organic/inorganic fillers is growing. Producers of polymer composites convert their production to optimize and replace traditional products with new ones with a high content of bio, recyclable materials, for sustainability and responsible actions. Research and industrial awareness are focused on ecological composites based on nat...

Analysis of old cartographic sources provides an opportunity to create a retrospective picture of the past. One of these important sources for study is "Map of Gurjstani vilayet" published by Al. Aslanikashvili in 1953, The map (which) was compiled according to the Ottoman document of the 16th century. The document reflects the period when the southern part of South Georgia was part of the Ottoman Empire under the name of the province of Gurjistani Vilayet (Samtskhe-Saatabago). Today, the largest part of this terr...

From an ecological perspective, increasing autonomy in subsea operations is vital for maintaining marine sustainability. These operations involve inspecting, maintaining, and repairing underwater equipment and structures, which can significantly impact the ecosystem if not carried out correctly. Using precise systems can reduce the risk of human error and minimize disturbance to the surrounding environment. This article presents an integrated head tracking system for ROV submarines, using a 3- dimensional orbiting...

As part of the GoldenEye project with European co-financing type H2020, the Academic Leapfrog Geo licensed program was purchased, with which a 3D modeling of the deposit body was made based on open source data, geological maps of the Romanian Geological Institute, non- secret data of CUPRUMIN company and drone flights. The ore has not been modeled in 3D up to now, this work presents for the first time the first consolidated modeling that highlights the size of the ore deposit body. These modelings will allow the t...

The effect of pressurized hydrogen on pipeline walls is an important phenomenon that can cause damage to the integrity of the pipeline structure during transport and storage of gases. Hydrogen can penetrate the wall of metallic pipelines (alloy steel or carbon steel) and cause cracking or rupture of the material, which can lead to pressure loss or even serious effects (explosions, fires). The embrittlement of the metal by hydrogen is a phenomenon of degradation of the mechanical properties of the metal, as a resul...

The wealth of the bowels of Kazakhstan has not yet been exhausted, there are promising areas that are currently insufficiently studied, especially at depth. The reason for the insufficient knowledge of geological structures in depth is the lack of a theoretical basis for geological research and justification for the forecast of prospect for minerals. In this regard, geology faces the question of creating a scientific approach for predicting new prospect areas, especially at depth. Our analysis shows that the princ...

A type of protection represents specific measures applied to equipment to avoid ignition of a surrounding explosive atmosphere. Flameproof enclosure -d- consists in placing the parts that could ignite an explosive atmosphere inside of an enclosure that can withstand the pressure developed during an internal explosion of an explosive mixture and which prevents the explosion transmission to the explosive atmosphere surrounding the enclosure. Increased safety -e- represents a type of protection that consists in apply...

Blasting and mechanical excavation systems are the main methods used in the excavation of rocks masses in mining and construction works. Mechanical excavation is insufficient in the case of very hard rocks masses. Therefore, blasting is widely preferred for the excavation of hard rock masses. Environmental parameters such as ground vibrations, air-shock and fly-rock occur due to blasting. The magnitude of these parameters depend on the explosive per delay, distance between the measurement- and blasting points, geo...

The Mediterranean Sea can be taken as a good example of the advantage of people transportation by water, in order to reduce pollution. This is mainly due to historical reasons, in fact the ashore private transportation along coasts of Italy, France, Spain, Slovenia, Croazia etc, has been developed during centuries on the basis of Roman Empire roads, and furtherly with development of railways, offering basically 2 different ways of transport. But recent solutions and studies shows the possibility to give a signific...

Research Object and Relevance. The main components of the strain tensor and their accuracy assessment are the research objects in this work. When conducting monitoring using geodetic methods, it is usually not enough to determine only the displacements of reference points; it is also necessary to determine the presence and magnitude of deformations. This task is directly related to the accuracy assessment of such characteristics as principal strains, dilatation, shear strains, and rotation. Research Methods. In co...