Destruction of the resins structure due to heating
This article considers a polymer composition based on acetone-formaldehyde (AFR) resin, which is used to reduce water influx into the well bore during the repair insulation work. Pumping into the well bore a composition, based on AFR resin, results in self-heating that causes destruction of its own structure and, therefore, the damage of the polymer blend structure. The purpose of the present article is to find the causes of AFR resin self-heating when injected into the well bore as part of the composite mixture that leads to the destruction of its structure. Author considers exothermic reaction between AFR resin and aqueous solution of sodium hydroxide during the curing of the polymer composition. The features of the given polymer structure are studied as well. The need for further studies of the resin structure is substantiated. Based on the study conducted, five possible reasons of the AFR resin self-heating, leading to destruction of resin structure, are revealed. Recommended practices that may decrease self-heating of the AFR resin are offered.
Ecological Consequences of Reservoir Water and Drill Cuttings Discharging in the Sea Continental Shelf
The article studies the impact of drilling waste and industrial water on the fauna of the aquatic environment. The analysis of the impact of emissions on the continental shelf is presented. The study revealed that in the ecological system of the marine continental shelf, the source of pollution is drilling waste and industrial water. The latest studies of the impact of drill cuttings and industrial water on the fauna of the continental shelf were analyzed, their specific impact on inhabitants of the aquatic fauna were examined, the role of alkyl phenols and polyaromatic hydrocarbons was studied. This article also analyzes detrimental effects of formation water on the fauna of the marine world. Alkylphenols (AF) and polyaromatic hydrocarbons (PAHs), which are part of industrial water, accumulate and settle in the mitochondria of cells of living organisms. They are rapidly metabolized in the body. It was also revealed that alkyl phenols, naphthenic acids and polyaromatic hydrocarbons can disrupt reproductive functions and affect chemical, biochemical and genetic biomarkers. Water-based drill cuttings can affect the biomarkers in the filter which is manifested in the increased oxygen consumption by living organisms, which destriys the marine fauna.
Code switching in Ahdaf Soueif's The Map of Love
This article examines the phenomenon of code switching in The Map of Love (1999) by the Egyptian—British writer Ahdaf Soueif. Though she chooses English as a medium for her creative expression, Soueif deploys Arabic in her narrative to represent different aspects of the linguistic and cultural norms of Egyptian society. The article's methodology is informed by Kachru's framework on contact literature and his categorization of the occurrence of literary code switching or bilingual creativity into different strategies that encompass cultural and linguistic processes. The results indicate the predominance in The Map of Love of the discourse strategies of employing lexical borrowing, culture-bound references and translational transfer. Finally, the article analyzes the functional motivation of code switching in the postcolonial context of the novel and how the use of certain creative strategies might enhance or diminish the narrative's effectiveness and readability.