Slang. Problems of definition

The social and psychological complexities captured in slang vocabulary make the term difficult to define, leading some scholars to question whether the term is even usable for linguistics. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3048

Energy Security: Shaping the Consumer Decision Making Process in Emerging Economies

Energy security is a universal concern among all countries, with all nations struggling for a sustainable solution. Solar technologies are a particularly beneficial utility for emerging economies due to both geography and affordability. Solar Photovoltaics (PV) is one of the highest potential growth markets in emerging economies due to the ability for small-scale systems to be placed on residential rooftops. Distribution of PV to individual homeowners is a new buying and selling process for what has traditionally been a business-to-business marketplace. Because the consumer market is at an infant stage in emerging economies, the messages that PV companies send to consumers will ultimately shape consumer perception about renewable energy. Through content analysis of websites from 12 companies in two of the BRICS markets, this research explores the similarities and differences with regard to consumer-facing messages among companies of various sizes in the two markets

Pedagogical Content Knowledge, Continuing Professional Development and Teachers’ Attitude Toward Science: A Structural Equation Model on Science Curriculum Implementation

The study's main objective was to determine the best-fit model for science curriculum implementation of public secondary science teachers in Region XII based on pedagogical content knowledge, continuing professional development, and teachers' attitudes toward science. This study used a stratified sampling technique to choose 400 respondents, a quantitative non-experimental causal research design, and mean, Pearson r, multiple regression, and structural equation model (SEM) as statistical tools. Survey questionnaires were deployed to the respondents using the online Google Form. Results revealed that the level of pedagogical content knowledge was very high, the level of continuing professional development was high, the level of attitude toward science was high, and the level of science curriculum implementation was very high. Moreover, pedagogical content knowledge, continuing professional development, and attitude toward science exhibited a significant relationship with science curriculum implementation. Furthermore, pedagogical content knowledge was the domain that best influences science curriculum implementation. Finally, among the five generated models, Model 5 best-fitted science curriculum implementation with pedagogical content knowledge in terms of subject matter knowledge, instructional objective and context, and knowledge of students' understanding, continuing professional development in terms of updating, reflective, and collaborative activities, and attitude toward science in terms of perceived dependency on context factors, self-efficacy, the difficulty of science teaching, and perceived relevance. Keywords: educational management, pedagogical content knowledge, continuing professional development, attitude toward science, science curriculum implementation, structural equation model, Philippines DOI: 10.7176/JEP/14-15-07 Publication date:May 31st 2023

Peritektični čelici: značajke strukture, tehnologije legiranja i primjene

The article presents analysis of phase transformation characteristics, primary structure formation, alloying technology and usage of steels, which undergo a peritectic transformation during their solidification.U članku se predočuje analiza značajki fazne transformacije, nastanka primarne strukture, tehnologije legiranja i primjene čelika podvrgnutih peritektičkoj transformaciji pri skrućivanju

Anomalous pressure effect on the magnetic ordering in multiferroic BiMnO3

We report the magnetic field dependent dc magnetization and the pressure-dependent (pmax ~ 16 kbar) ac susceptibilities Xp(T) on both powder and bulk multiferroic BiMnO3 samples, synthesized in different batches under high pressure. A clear ferromagnetic (FM) transition is observed at TC ~ 100 K, and increases with magnetic field. The magnetic hysteresis behavior is similar to that of a soft ferromagnet. Ac susceptibility data indicate that both the FM peak and its temperature (TC) decrease simultaneously with increasing pressure. Interestingly, above a certain pressure (9 ~ 11 kbar), another peak appears at Tp ~ 93 K, which also decreases with increasing pressure, with both these peaks persisting over some intermediate pressure range (9 ~ 13 kbar). The FM peak disappears with further application of pressure; however, the second peak survives until present pressure limit (pmax ~ 16 kbar). These features are considered to originate from the complex interplay of the magnetic and orbital structure of BiMnO3 being affected by pressure.Comment: 4 pages,4 figures, publised in Physical Review B 78, 092404/200

Метилювання положення 8 піридинової частини молекули N-(бензил)-2-гідрокси-4-оксо-4Н-піридо[1,2-a]піримідин-3-карбоксамідів як спроба посилення їх аналгетичних властивостей

The chemical modification of the pyridine moiety of the molecule – displacement of the methyl group in position 8 of pyrido[1,2-a]pyrimidine nucleus has been considered as one of the possible versions to optimize the biological properties of N-(benzyl)-2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamides. The synthesis of the research targets was carried out by the reaction of the corresponding benzylamines and ethyl 2-hydroxy-8-methyl-4-oxo-4H-pyrido[1,2-a] pyrimidine-3-carboxylate, in its turn obtained by condensation of 2-amino-4-methylpyridine (i.e. the product with the methyl group in the intentionally required position) and triethyl methanetricarboxylate. The structure of the compounds obtained has been confirmed by the data of elemental analysis and NMR 1H spectroscopy, and in the case of optically active 1-phenylethylamides additionally by polarimetry. The study of the analgesic properties of all N-(benzyl)-2-hydroxy-8-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamides was performed on the standard experimental “acetic acid writhing” model. At the same time, it has been found that our modification is accompanied with the increased biological activity of exclusively para-substituted derivatives. For profound research 4-fluorobenzylamide exceeding Piroxicam and Nabumetone by the level of the specific effect has been recommended as a potential new analgesic.В качестве одного из возможных вариантов оптимизации биологических свойств N-(бензил)-2-гидрокси-4-оксо-4Н-пиридо[1,2-a]пиримидин-3-карбоксамидов рассмотрена химическая модификация пиридиновой части их молекулы – перемещение метильной группы в положение 8 пиридо[1,2-a]пиримидинового ядра. Синтез целевых объектов исследования осуществлен реакцией соответствующих бензиламинов с этил-2-гидрокси-8-метил-4-оксо-4Н-пиридо[1,2-a]пиримидин-3-карбоксилатом, в свою очередь, полученным конденсацией 2-амино-4-метилпиридина (т. е. продукта с метильной группой в заведомо требуемом положении) с триэтилметантрикарбоксилатом. Строение синтезированных веществ подтверждено данными элементного анализа и спектроскопии 1Н ЯМР, а в случае оптически активных 1-фенилэтиламидов дополнительно еще и поляриметрически. Изучение анальгетических свойств всех N-(бензил)-2-гидрокси-8-метил-4-оксо-4Н-пиридо[1,2-a]пиримидин-3-карбоксамидов проведено на стандартной экспериментальной модели уксуснокислых корчей. При этом найдено, что предпринятая нами модификация сопровождается усилением биологической активности исключительно паразамещенных производных. Для углубленных испытаний в качестве нового потенциального анальгетика рекомендован 4-фторбензиламид, превосходящий по уровню специфического эффекта Пироксикам и Набуметон.Як один з можливих варіантів оптимізації біологічних властивостей N-(бензил)-2-гідрокси-4-оксо-4Н-піридо[1,2-a]піримідин-3-карбоксамідів розглянуто хімічну модифікацію піридинової частини їх молекули – переміщення метильної групи у положення 8 піридо[1,2-a]піримідинового ядра. Синтез цільових об’єктів дослідження здійснено реакцією відповідних бензиламінів з етил-2-гідрокси-8-метил-4-оксо-4Н-піридо[1,2-a]піримідин-3-карбоксилатом, у свою чергу, одержаним конденсацією 2-аміно-4-метилпіридину (тобто продукту з метильною групою в завідомо необхідному положенні) з триетилметантрикарбоксилатом. Будову синтезованих речовин підтверджено даними елементного аналізу та спектроскопії 1Н ЯМР, а у випадку оптично активних 1-фенілетиламідів додатково ще й поляриметрично. Вивчення аналгетичних властивостей усіх N-(бензил)-2-гідрокси-8-метил-4-оксо-4Н-піридо[1,2-a]піримідин-3-карбоксамідів проведено на стандартній експериментальній моделі оцтовокислих корчів. При цьому знайдено, що здійснена нами модифікація супроводжується посиленням біологічної активності виключно паразаміщених похідних. Для поглиблених випробовувань як новий потенційний аналгетик рекомен