Intimate Partner Violence: An Overview of the Existing Theories, Conceptual Frameworks, and Definitions

Background: Intimate Partner Violence (IPV), also known as domestic violence, spousal abuse, and relationship violence, among other names, is becoming a widely recognized social and public health problem. Theory and practice suggest it is vital that the issue be addressed comprehensively in both the healthcare and socio-legal contexts. The theoretical perspectives underlying inquiries into the nature and etiology of the IPV phenomenon are of fundamental importance in promoting our understanding of how to prevent, reduce, or eliminate the problem. In order to integrate various aspects of knowledge about the phenomenon, it is important to consider and evaluate the approaches to IPV currently prevalent in the field. Objectives: The present article aims to provide a critical overview of the existing theories, methodological frameworks, typologies, and definitions of Intimate Partner Violence. Design: The present paper reviews the international literature on the conceptual frameworks and definitions of IPV. First, it draws on the conceptual frameworks of violence; it then reviews relevant theories and definitions of IPV considered from sociocultural, individual, and integrative perspectives. The disparities, limitations, and explanatory powers of these theories, as well as their clinical and research applications, are discussed in an attempt to bring more clarity into the current state of understanding in the field. Results and Conclusions: Our review suggests that there is no universally accepted definition of IPV, nor a conceptual framework that would encompass the complexity of the phenomenon. Some of the theoretical frameworks for studying IPV appear to provide potential advantages over others, but their empirical viability has yet to be determined. We argue that, due to the complex multifaceted nature of IPV, a narrow theoretical stance might exclude a variety of exploratory factors and limit understanding of the phenomenon

Method for determining the characteristics of a gas-steam chp with a steam turbo drive of a compressor

A new type of maneuverable combined-cycle plant with a steam-turbine drive of a low-pressure compressor is considered. The analysis of its technological processes in the generation of electric and thermal energy in heating and non-heating periods of the year is carried out. It is shown that in heating conditions, the burning of additional fuel in the afterburner between the stages of the evaporator of the utilizer boiler provides an increase in its steam production, maneuverability, thermal and electric power of the CCGT-CHP plant. The influence of the chemical composition and thermophysical properties of natural gas on obtaining the required excess air in the combustion chamber of a combined cycle gas turbine is considered. A mathematical model of technological processes is developed. The influence of deep utilization of the heat of the flue gases of the utilizer boiler on increasing the efficiency and improving the environmental characteristics of the gas-steam plant of a thermal power plant was recorded. © 2020 Institute of Physics Publishing. All rights reserved

Immunomodulatory Activity of Polysaccharides Isolated from <i>Saussurea salicifolia</i> L. and <i>Saussurea frolovii</i> Ledeb

The genus Saussurea has been used in the preparation of therapies for a number of medical problems, yet not much is known about the therapeutic high-molecular-weight compounds present in extracts from these plants. Since polysaccharides are important in immune modulation, we investigated the chemical composition and immunomodulatory activity of Saussurea salicifolia L. and Saussurea frolovii Ledeb polysaccharides. Water-soluble polysaccharides from the aerial parts of these plants were extracted using water at pHs of 2 and 6 and subsequently precipitated in ethanol to obtain fractions SSP2 and SSP6 from S. salicifolia and fractions SSF2 and SSF6 from S. frolovii. The molecular weights of fractions SSP2, SSP6, SFP2, and SFP6 were estimated to be 143.7, 113.2, 75.3, and 64.3 kDa, respectively. The polysaccharides from S. frolovii contained xylose (67.1–71.7%) and glucose (28.3–32.9%), whereas the polysaccharides from S. frolovii contained xylose (63.1–76.7%), glucose (11.8–19.2%), galactose (4.7–8.3%), and rhamnose (6.8–9.4%). Fractions SSP2, SSP6, and SFP2 stimulated nitric oxide (NO) production by murine macrophages, and NO production induced by SSP2, SSP6, and SFP2 was not inhibited by polymyxin B treatment of the fractions, whereaspolymyxin B treatment diminished the effects of SFP6, suggesting that SFP6 could contain lipopolysaccharide (LPS). The LPS-free fractions SSP2, SSP6, and SFP2 had potent immunomodulatory activity, induced NO production, and activated transcription factors NF-κB/AP-1 in human monocytic THP-1 cells and cytokine production by human MonoMac-6 monocytic cells, including interleukin (IL)-1α, IL-1β, IL-6, granulocyte macrophage colony-stimulating factor (GM-CSF), interferon-γ, monocyte chemotactic protein 1 (MCP-1), and tumor necrosis factor (TNF). These data suggest that at least part of the beneficial therapeutic effects reported for water extracts of the Saussurea species are due to the modulation of leukocyte functions by polysaccharides