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Globalization has changed the way global society addresses common and global problems.

This study explores the use of energy savings technologies in timber production for wood housing construction. Methods applied were based on the creation of system of optimized regimes of drying of sawn timber was carried out in two stages: computing experiment with the tools of MathCAD and production experiment. The findings discovered the following tendency: however the minimum cost of energy is achieved at the minimum time of drying that is explained by an essential difference in the cost of thermal and electric energy. The regimes of steeples structure received by computer modeling allow receiving sawn timber that fully meets the requirements of the consumer without application of moisture treatment and the conditioning processing. The developed technique of formation of the steeples regimes of drying of sawn timber allows determining structure and sizes of parameters of the regime depending on the required quality of drying and energy costs on its carrying out. Calculations of technical and economic efficiency have shown that the total annual economic effect in more than 17 dollars per 1 m3 and it can be extended by including on power component. © 2018 CEUR-WS. All rights reserved. The work is carried out based on the task on fulfilment of government contractual work in the field of scientific activities as a part of base portion of the state task of the Ministry of Education and Science of the Russian Federation to Ural State Forest Engineering University (the # 26.8660.2017/8.9 "The Research Methodology of Forms of Economic and Technological Reality in the Aspect of Sustainable Forest Management").

Coordinate pulsewidth modulation is considered for the control of power switches of matrix and two-component direct frequency converters (DFC) in ac drive systems. The synthesis of modulating signals yielding the specified output voltages and sinusoidal grid currents for converters with no intermediate smoothing filter is discussed. Simulation of DFC operation with an RLE load and an asynchronous motor is undertaken.

Slides presented at the 102 Annual American Meteorological Society Meeting, as part of the session "Major Weather Events and Impacts of 2021" (paper 6.3 - It's Getting Hot in Here: Real-Time Climate Fingerprints Applied to the 2021 Extreme Heat Season) For more information, please reach out to Daniel Gilford at dgilford@climatecentral.org. Presentation Abstract: Extreme heat was observed and experienced across large portions of the United States in 2021, including during notable record-breaking events in the Pacific Northwest, the Southwest, and along the East coast. The contiguous US experienced its hottest June on record, and excess heat related deaths stretched into the thousands. While more frequent and intense periods of extreme heat are expected consequences of anthropogenic climate change, rapidly and continuously assessing the degree to which human emissions of greenhouse gases increase the likelihood of a specific event remains a challenging technical process. In this study we introduce the Realtime Climate attribution framework and illustrate its application through an analysis of observed 2021 extreme heat events. The framework implements one model-based and two observation-based approaches to produce three distinct attribution assessments, including best estimates and uncertainties. The framework is designed to be flexible across a range of variables and scales, computationally lightweight, and adaptable for impact studies. Using a suite of global climate models, observed global mean temperatures, and local observed daily temperatures, we quantify the extent to which human-driven climate change made 2021 maximum and minimum daily temperature extremes more likely across the United States. Results confirm the continued and growing influence of human-driven climate change in local weather extremes. For instance, we find that the record-breaking high temperatures in June near Phoenix, AZ, were at least 3.25 times more likely because of human activity. Through this framework, we are building the capacity to produce attribution estimates while an event is unfolding. Furthermore, the ability to estimate attribution levels continuously will enhance studies of extreme heat impacts on human health, along with other socioeconomic or influences.

When using the unique in terms of the volumes of databases on the level of a stand of Picea and Abies spp., the trans-Eurasian additive allometric models of biomass for Eurasian forests are developed for the first time, and thereby the combined problem of model additivity and generality is solved. The additive model of forest biomass of Picea and Abies is harmonized in three levels, one of which provides the principle of additivity of biomass components, the second one is associated with the introduction of dummy independent variables localizing model for eco-regions of Eurasia, and the third one makes the biomass structure of spruce and fir compatible by means of binary variable. The model can be developed further according to the third level of harmonization, when instead of the binary variable one can include another block of dummy variables coding the membership of actual biomass data of each eco-region to basic forest-forming wood species in Eurasia. This might be a subject for further research. © 2018 CEUR-WS. All rights reserved.

One of the most important key factors for the development of non-urban areas is infrastructure, and energy generation is one of the fundamental infrastructure elements. This paper provides a new solution for energy generation based on wood chips which has a multi-sector effect because the authors offer to combine planning of forest cleaning cutting with bioenergy generation in one complex project, which will have socio-economic and ecological effects. The situation with forest fires makes the authors’ idea more attractive because after forest fires the problem of cleaning cutting in forest becomes very important and urgent by ecological and economical points: after cleaning cutting there are a lot of low quality wood which can be recycled into chips for the production bioenergy by the authors’ idea. This enriched methodology has successfully been applied into the regional strategical planning in the field of bioenergy and forestry of the Ural region of Russia; however, it is suitable for applications in regional development in any non-urban forested region of the world. © 2017, Editura Universitatii din Bucuresti. All rights reserved.

The relevance of the analyzed issue is due to the increasing importance of the green economy in the world and in Russia in particular. Priorities of the development of the world energy are in the development of alternative sources of energy to improve energy efficiency. The purpose of the article is to analyze the development of renewable energy sources (RES) in Russia and to assess the potential for using renewable energy of regions in Russia. The leading approach to the study of this issue is the study of renewable energy data and public policy in Russia to stimulate innovative methods. The article analyzes the level of effectiveness of the implemented projects in the Russian Federation in Arkhangelsk and Irkutsk regions. The authors select the most interesting and unique projects in the city of Anapa, Yailyu, in Kamchatka and in the Republic of Crimea. The data of the article may be useful for research on the analysis and comparison of the world's renewable energy development trends. © International Economic Society.

Diffusion coefficients for Ba-133, Sr-90, and Ca-45 radionuclides in the solid solution Ba(3-3x)La(2x)rectangle(x)(VO4)(2) (x = 0, 0.05, 0.1, 0.15) are measured in the temperature range 800 to 1000 degrees C using the layer-by-layer radiometric analysis. It is established that D-Ca(*) greater than or equal to D-Sr(*) > D-Ba(*). Increasing the concentration of vacancies rectangle in the barium sublattice leads to an increase in the diffusion coefficients of the alkaline-earth metal cations. The activation energies for the radionuclide diffusion are determined; their values (similar or equal to 1.1 eV) are close to the activation energy for ionic conduction. Cations M2+ are shown to migrate via the positions of Ba(2).

This paper presents experimental results of Thermal Energy Storages (TES) implemented into a liquid cooling system for the cooling of power electronics (PE). The experimental investigations are performed on a test rig at Hamburg University of Technology. The main objective of this study is to find a constellation, in which the weight of the liquid cooling system can be reduced by complying with a maximum temperature. For this purpose tests with a Latent Heat Storage (LHS) and a Sensible Heat Storage (SHS) were realised. The results are compared to a direct cooling of power electronics. Finally the weight reduction potential is estimated.

In this paper, the ignition behaviour of droplets composed by crude FPBO and FPBO/EtOH blends at normal pressure is discussed. The tests were carried out, in a closed single droplet combustion chamber with optical accesses, on droplets of diameter in the range 0.8 mm -1.4 mm. FPBO/EtOH blends with percentage of alcohol varying between 5 % v/v and 50 % v/v were tested. To analyse the effectiveness of the addition of ethanol on the ignition properties of FPBOs, the study was also carried out on the crude FPBO used to form the blends. 1D modelling of the evaporation and ignition of droplets of crude FPBO and blends FPBO/EtOH is also discussed. The comparison of numerical and experimental results shows that the model is able to capture the main features of the heating phase of the complex fuels forming the droplets. Proceedings of the 27th European Biomass Conference and Exhibition, 27-30 May 2019, Lisbon, Portugal, pp. 765-770