scholarly journals Geomechanical simulation of energy storage in salt formations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kishan Ramesh Kumar ◽  
Artur Makhmutov ◽  
Christopher J. Spiers ◽  
Hadi Hajibeygi

AbstractA promising option for storing large-scale quantities of green gases (e.g., hydrogen) is in subsurface rock salt caverns. The mechanical performance of salt caverns utilized for long-term subsurface energy storage plays a significant role in long-term stability and serviceability. However, rock salt undergoes non-linear creep deformation due to long-term loading caused by subsurface storage. Salt caverns have complex geometries and the geological domain surrounding salt caverns has a vast amount of material heterogeneity. To safely store gases in caverns, a thorough analysis of the geological domain becomes crucial. To date, few studies have attempted to analyze the influence of geometrical and material heterogeneity on the state of stress in salt caverns subjected to long-term loading. In this work, we present a rigorous and systematic modeling study to quantify the impact of heterogeneity on the deformation of salt caverns and quantify the state of stress around the caverns. A 2D finite element simulator was developed to consistently account for the non-linear creep deformation and also to model tertiary creep. The computational scheme was benchmarked with the already existing experimental study. The impact of cyclic loading on the cavern was studied considering maximum and minimum pressure that depends on lithostatic pressure. The influence of geometric heterogeneity such as irregularly-shaped caverns and material heterogeneity, which involves different elastic and creep properties of the different materials in the geological domain, is rigorously studied and quantified. Moreover, multi-cavern simulations are conducted to investigate the influence of a cavern on the adjacent caverns. An elaborate sensitivity analysis of parameters involved with creep and damage constitutive laws is performed to understand the influence of creep and damage on deformation and stress evolution around the salt cavern configurations. The simulator developed in this work is publicly available at https://gitlab.tudelft.nl/ADMIRE_Public/Salt_Cavern.

Lex Russica ◽  
2021 ◽  
Vol 74 (2) ◽  
pp. 64-79
Author(s):  
R. V. Tkachenko

The paper is devoted to the examination of issues related to the increasing importance of budgetary regulation for the proper functioning of a modern innovative society. The key role of the budgetary regulation in the financial process of the State is particularly acute in the context of systemic crises that include socio-economic consequences caused by the spread of a new coronavirus infection (COVID-19) in Russia. In the course of the study, the features of changes in the state financial policy caused by the above-mentioned crisis phenomena are highlighted. The paper describes various approaches to the interpretation of the budgetary regulation as a category of financial law, explores various types and legal forms of methods of the budgetary regulation, analyses mechanisms and the impact of the State on the budget system through the existing legal structure of the budgetary regulation. It is determined that the rules of financial law governing the whole complex of public relations concerning the distribution and redistribution of the national product between the levels of the budget system of the Russian Federation constitute the institution of financial law, namely: the budgetary regulation. The author concludes that the approach based on the concentration of basic powers in the financial field at the federal level significantly slows down the dynamics of development of economic activity in the majority of regions of Russia, while the need for breakthrough innovative development of Russian society determinates the expansion of long-term tax sources of income for regional budgets. In this regard, it is proposed to consolidate additional regulation for revenues gained by regional and local budgets in the form of targeted deductions from federal taxes on a long-term basis.


2021 ◽  
Vol 4 (7) ◽  
pp. 4-19
Author(s):  
Akmal Baltayevich Allakuliev ◽  

The article examines the interaction of the country's GDP with the state budget in the short and long term, the impact of the macro-fiscal mechanism on the country's economic growth on the example of Uzbekistan.The aim of the study is to identify dynamic correlations between the country's state budget expenditures and the economic growth of the macro-fiscal mechanism in the short and long term, as well as to analyze the approximation or rate of return of GDP and the state budget to equilibrium during various macroeconomic shocks. and hesitation.The scientific novelties of the research are:


2021 ◽  
Vol 56 (4) ◽  
pp. 105-118
Author(s):  
Žilvinas Švedkauskas ◽  
Ahmed Maati

An emerging literature has shown concerns about the impact of the pandemic on the proliferation of digital surveillance. Contributing to these debates, in this paper we demonstrate how the pandemic facilitates digital surveillance in three ways: (1) By shifting everyday communication to digital means it contributes to the generation of extensive amounts of data susceptible to surveillance. (2) It motivates the development of new digital surveillance tools. (3) The pandemic serves as a perfect justification for governments to prolong digital surveillance. We provide empirical anecdotes for these three effects by examining reports by the Global Digital Policy Incubator at Stanford University. Building on our argument, we conclude that we might be on the verge of a dangerous normalization of digital surveillance. Thus, we call on scholars to consider the full effects of public health crises on politics and suggest scrutinizing sources of digital data and the complex relationships between the state, corporate actors, and the sub-contractors behind digital surveillance.


2020 ◽  
pp. 100-113
Author(s):  
Tetyana Meteliova ◽  
Vira Chghen

The article is devoted to identifying the role of the Confucian component in shaping China’s foreign policy during the period of “reforms and openness”. The author analyzes the Chinese “soft power” model and its differences from the classical one, the theoretical foundations of which were formulated by J. Nye, and discovers the China’s “soft power” features in foreign policy and establishes its meaningful connection with Confucian values and concepts. The article provides an overview of “soft power” interpretations in the main works of Chinese scholars, examines the reflection of Confucian “soft power” ideas in the state and party documents and decisions of the period of “reforms and openness”, shows the application of Confucian principles in the foreign policy of China. It is shown that the creation of effective Chinese “soft power” tools is becoming a part of a purposeful and long-term policy of the state. Such tools include the swift reform of leading media, TV and radio companies using modern technologies and focusing on foreign audience abroad, promoting China’s traditional and modern culture in foreign cultural markets, increasing China’s presence on the world market, spreading and promoting the Chinese language, “Education Export” and widening educational contacts, economic ties development and scientific and technical cooperation, public diplomacy development, support of the compatriots living abroad. Geopolitically, China’s soft power strategy is focused on developing relations with its close neighbors and creating a security belt around China. It has been proved that modern China seeks to proclaim itself as a new “soft power” center, the creation of which is a part of the State purposeful long-term policy. It is accompanied by the active appeal of Chinese ideologists to the country's traditional cultural heritage and basing of this new foreign policy on the conservative values of Confucianism, which is a kind of civilizational code determining all aspects of social life for China.


Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 4775-4775
Author(s):  
Katharina Schallmoser ◽  
Christina Bartmann ◽  
Eva Rohde ◽  
Simone Bork ◽  
Christian Guelly ◽  
...  

Abstract Abstract 4775 Background: Based on promising experimental studies with mesenchymal stem and progenitor cells (MSPCs) multiple clinical trials have been initiated. In previous studies we have observed genomic stability of MSPCs after efficient short-term expansion in a humanized GMP compliant system with pooled human platelet lysate (pHPL) replacing fetal bovine serum (FBS) as the cell culture supplement (Schallmoser K. and Strunk D., Journal of Visualized Experiments (32) DOI: 10.3791/1523, 2009). Notably, depending on culture protocols, an extensive propagation with highly variable cell culture duration may be necessary to yield enough MSPCs for therapy. The decline in proliferation rates of MSPCs in the course of the different long-term expansion procedures may indicate a propensity for replicative senescence which may hamper long term functionality in vivo. We have therefore initiated a molecular profiling of senescence-associated regulated genes to determine the state of senescence before MSPC transplantation. Methods: Human bone marrow-derived MSPCs were cultured following a highly efficient two-passage protocol (primary culture of unseparated bone marrow and subsequent large scale expansion; Schallmoser K. et al., Tissue Engineering 14:185-196, 2008) compared to conventional serial passaging in three different growth conditions with regularly more then four passages to obtain comparable final cell numbers. Culture media were either supplemented with FBS in different concentrations or pHPL. Gene expression changes were tested by microarray analysis and selected targets were reanalyzed by quantitative real-time PCR. The genomic stability of MSPCs after long-term culture was determined by array comparative genomic hybridization (CGH). Results: Despite high proliferation rate large scale expanded MSPCs showed genomic stability in array CGH. Long-term MSPC growth induced similar gene expression changes in MSPCs irrespective of isolation and expansion conditions. In particular, genes involved in cell differentiation, apoptosis and cell death were up-regulated, whereas genes involved in mitosis and proliferation were down-regulated. Furthermore, overlapping senescence-associated gene expression changes were found in all MSPC preparations. The genomic copy number variations detected in MSPCs of early and late passages in all culture conditions did not coincide with differentially expressed genes. Conclusion: Our data indicate that MSPC expansion can induce gene expression changes independent of isolation and FBS-supplemented as well as FBS-free expansion conditions. A panel of genes will be presented that might offer a practicable approach to assess MSPC quality with regard to the state of replicative senescence in advance of therapeutic application. Determining the impact of senescence acquired during cell expansion on the therapeutic potential of MSCPs for both immune modulation and organ regeneration may help to develop more efficient treatment strategies. Disclosures: No relevant conflicts of interest to declare.


Author(s):  
Anton Sotnikov

The article presents the results of a study conducted by the author on the impact of trust between business and the state on the innovative development of the economy. A brief description of the phenomenon under consideration in the Russian Federation is given, and the main problems in the relationships of these entities are shown using specific examples. The crisis of confidence entails significant risks for the business, which in turn leads to a reduction in business activity and the outflow of capital. Overcoming this crisis is not possible with short-term targeted measures, since it is necessary to apply a long-term programmatic approach that combines various measures and mechanisms, as well as the interaction of the parties. The author, including, based on international experience, shows the mechanisms by which it is possible to structure relations between the government and the business community. According to the author, various measures, both general and specific, contribute to the improvement of the investment climate. The author sees the judicial system independent of the state as the main guarantee. Also, the article discusses issues of legislative guarantees of investments, providing for full compensation for damage when changing state policy in relation to specific types of activities; the introduction of public-private partnership models to address socially significant projects that are not of commercial interest to firms in the absence of state support; creation and functioning of entrepreneurial innovation infrastructure for the development of innovative firms through the combined efforts of state authorities and local self-government; improvement of civil society institutions and public discussion of the activities of state institutions and entrepreneurs.


2020 ◽  
Vol 172 ◽  
pp. 16010
Author(s):  
Pedro F. Pereira ◽  
Nuno M. M. Ramos

The development of nearly zero energy buildings (nZEB) is a goal being set for many countries for the next years. In order to achieve that goal, on-site energy generation is needed, and the use of photovoltaic and storage systems is a possible strategy. Hence, the objective of this work is to evaluate the impact that occupant behaviour has on the batteries energy storage systems (BESS) of an nZEB. This study considers as a case study an nZEB with lightweight construction, located in the university campus, and used by different occupants. The case study has 12 PVs located on the root and a second-life BESS from an electrical vehicle (EV). The monitoring system consists of interior T, RH, CO2 and energy sensors and an exterior on-site meteorological station. The research started with a state of the art review of the support policies for the on-site photovoltaic generation and energy storage. Different storage charge profiles were obtained as different occupant behaviours were applied to the test building. In total, it were considered three occupant profiles and a base scenario was the unoccupied. The occupant behaviour showed to be determinant in the state of charge of the BESS independently from the impacts in the indoor temperature. The need to know the profile of the occupants before the design of the buildings was enhanced.


1993 ◽  
Vol 41 (2) ◽  
pp. 197-213 ◽  
Author(s):  
Margaret Brazier ◽  
Jill Lovecy ◽  
Michael Moran ◽  
Margaret Potton

The organization of the medical and legal professions in Britain has depended heavily on ideologies of self-regulation, and on different institutional creations inspired by those ideologies. Self-regulation balances professions between the market and the state. In recent years both medicine and the law have been subjected to greater competition in the market, and greater control by the state. Part of the explanation for change lies in conditions particular to medicine and law but the similarity in recent regulatory experiences can only be explained by the working of common external forces. Two are identified: the impact of long-term cultural change on a regulatory balancing act originally created in an undemocratic and hierarchical society; and the impact of a modernizing elite in British government seeking to use state power to reverse the decline in British competitiveness.


Author(s):  
Delaram Azari ◽  
Shahab Shariat Torbaghan ◽  
Madeleine Gibescu ◽  
Mart A. M. M. van der Meijden

2020 ◽  
Vol 217 ◽  
pp. 05001
Author(s):  
Olga Brel ◽  
Anna Zaytseva ◽  
Phillip Kaizer

In the current economic situation, the solution to the problems of diversification of mining regions is relevant not only in terms of economic outcome, but also the need to change the ecological situation in industrial regions towards its improvement. Diversification of the region’s economy is associated with the idea of expanding the range of economic activities and considered as a mechanism to reduce risks and mono-dependence of the regional economy. The study suggests that tourism could become one of the areas of diversification and greening of the mining region economy by the example of the Kemerovo region. The structure of the GRP and individual indicators characterizing the state of the tourism sector were analyzed to assess the impact of tourism on the diversification of the economy of the Kemerovo region. Despite the fact that the total share of the tourism sector has changed slightly over the 5 years, its multiplier effect has a positive impact on the state of the service sector and the economy of the entire region. It was confirmed by the results of the analysis. The optimistic scenario for the development of the Kemerovo region determines the large role of tourism in the diversification and greening of the region’s economy. The implementation of the conservative scenario that provides the supportive development of traditional sectors, does not exclude opportunities for the development of tourism, which will ensure the effective and long-term sustainable development of the Kuzbass.


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