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The climate change facing humanity requires two major and immediate solutions: the need to drastically reduce greenhouse gas emissions on the one hand, and on the other hand the need to adapt to the effects of climate change, given that these effects are already visible and unavoidable due to the inertia of the climate system. Romania is vulnerable to a number of natural climate and geological dangers: floods, droughts, extreme temperatures, the western part of the country registering over time some devastating fl...

When studying the mechanical behavior of hydrated binders, it is necessary to prevent hydration contraction tensile failure in order to properly characterize the mechanical properties of the material. This is regulated by standards for cement testing, however for the case of water-cement-bentonite mixtures the influence of standard sand is not thoroughly studied. Since the hydration shrinkage and water suction is different for cement and bentonite, a range of eleven combinations of water-cement-bentonite were used...

Biodiversity can be defined as the diversity of ecosystems, expressed as symbioses, habitats, landscapes, species diversity and genetic diversity within species, i.e. the totality of the gene pool that constitutes nature at the global level. In the current period, but especially in the last half century, there has been a steady loss of biodiversity with major consequences for the living world and severe impacts on human society. Biodiversity is a fundamental basis for human existence and humanity is itself a part ...

Wind energy has grown in popularity and concomitantly so has the installation of wind turbines. As both alternative and green sources of energy, many may assume that wind energy is replacing fossil fuels such petroleum and natural gas and leading us to a more sustainable future. While renewable energy is part of the sustainability equation, another common attribute of achieving sustainability is the localization of production and consumption. In many ways, this almost automatically occurs with wind turbines becaus...

Air pollution by particulate matter (PM) in urban environment is an ongoing problem with increasing severity. With the gradual evolution of electromobility and lowemission heat sources, the focus is shifting to non-exhaust PM emissions. Wind induced PM resuspension is one of them. This source is hardly amenable to mitigation measures. It was assumed, that only coarse PM (PM10-2,5) can be lifted from the ground by the wind. By the evaluation of the long-term data series, we can divide the PM10 concentration to its ...

As part of the studies aimed at the individuation of the best techniques for the beneficiation of a mineral of wollastonite, coming from an Italian deposit, the problem of the optimization of the milling step was also considered, since the industrial use of wollastonite usually involves a preventive fine grinding. Therefore, in order to evaluate the grindability characteristics of this mineral, in consideration of the lack of data available in literature, we proceeded to the determination of its Bond index through...

The structural analysis of the civil infrastructure is vital in order to track the evolution of degradation in time, to prevent disasters, but also to document and conserve the sites of cultural heritage. This paper review-s the workflow on the acquisition of point clouds to Terrestrial Laser Scanner (TLS) with those collected by photogrammetric 3D models based on images captured by an unmanned aerial vehicle (UAV), analyzing the data sets on two diferent type of bridges located in western Romania. The obtained da...

Currently the resources of rare metals, especially Ta, Nb, Be, and Li used in high-tech industries, are of great demand in Kazakhstan and worldwide. Main Ta, Nb, Be, Li, Sn, and W deposits in the Great Altai territory are hosted by Permian granitic belts that formed during the Late Paleozoic-Early Mesozoic orogeny, in a postcollisional setting. The largest metallogenic structure of the Kalba-Narym granitoid belt accommodates many genetically different deposits and occurrences. Pegmatitic rare-metal deposits have v...