Intramolecular photo-physical processes and spectral-luminescence properties of a dye merocyanine 540 and its complexes with water

Merocyanine 540 (M540) is famous dye that used in electronics and medicine. An important feature of the dye is a significant intramolecular transfer of the electron density in the excited state. Experimentally was investigated the electronic absorption and fluorescence spectra in different solvents M540. Electronic structure, spectra and rate constants of photo-physical processes of an isolated molecule and its complexes with water molecules were calculated by INDO method with spectroscopic parameterization. Analysis of the results allowed establishing the effect of individual fragments and hydrogen bonds with water on the electronic charge transfer between the terminal units in the state S1. Examination of photo-physical processes of decomposition of the fluorescent state was showed that the intramolecular processes of decay of the S1 state are not the cause of the differences calculated and experimental fluorescence quantum yield. Consideration of trans-cis photoisomerization leads to the elimination of this non-compliance. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

Optical properties of new indotricarbocyanine dye as a limiter of laser radiation power

We present results of experimental and theoretical studies of the optical characteristics of a new indotricarbocyanine dye that is capable of effectively limiting the power of laser radiation in the visible spectral range. The spectral-luminescent and energy characteristics of the dye molecules and their absorption spectra from the excited state with nanosecond resolution are investigated experimentally. Quantum-chemical methods are used to calculate electronic absorption spectra from the ground (S0 → Sn) and excited (S1 → Sn) states and to determine the nature of electronic states of the molecule and the rate constants of intramolecular photo-physical processes. The results of the theoretical research agree with experimental data. It is shown that the investigated dye has singlet-singlet absorption at 400–600 nm. Nonlinear absorption of the dye upon excitation by radiation of the second harmonic of a Nd:YAG laser is studied by z-scanning with an open diaphragm. The ratio of dye absorption cross sections from the excited and ground states at 532 nm is determined in the framework of a three-level model. The results are compared with those for previously studied compounds

The fluorescence analysis of laser photolysis of phenols in water

Оцифровано в НБ ТГ

On the Formation of “Soft Skills” as the Equivalent of Professional Competencies: A Forecast of Educational Trends

Автори статті досліджують формування загальних кометентностей у рамках професійних компетенцій. Метою статті є сформулювати характеристику soft skills, її складові, а також проаналізувати методи і прийоми навчання та перспективи розвитку soft skills в умовах світової глобалізації, технічного прогресу, економічних і політичних змін. Для цього використано такі методи: аналіз наявних наукових публікацій на тему «soft skills» в освітньому просторі та їх співвідношення з професійними компетенціями. Порівняльний метод використано при аналізі формування навичок м’якого навчання української та європейської практик. При аналізі окремих компонентів soft skills було використано індуктивний метод. Результати дослідження привели до розуміння перспективи soft skills як фундаментальної вимоги на сучасному ринку праці. Загальні навички є універсальними потребами сучасної освіти.Авторы статьи исследуют формирование общих навыков в рамках профессиональных компетенций. Цель статьи – сформулировать характеристику soft skills, ее составляющих, а также проанализировать методы и приемы обучения soft skills и перспективы развития в условиях мировой глобализации, технического прогресса, экономических и политических изменений. Для этого использовались следующие методы: анализ существующих научных публикаций по теме «общихх навыков» в образовательном пространстве и их соотношение с профессиональными компетенциями. Сравнительный метод применялся при анализе сформированности soft skills украинского образования и европейских практик. При анализе отдельных компонентов мягких навыков использовался индуктивный метод. Результаты исследования привели к пониманию перспективы soft skills как фундаментального требования на современном рынке труда. Общие навыки навыки являются универсальными потребностями сегодняшнего образования.The authors of the article study the soft skills formation in the framework of professional competencies. The aim of the article is to formulate the soft skills characteristic, its components, as well as to analyze methods and techniques of soft skills training and development prospects in the conditions of the world’s globalization, technical progress, economic and political changes. For this purpose, one used the following methods: the analysis of existing scientific publications on the topic of “soft skills” in the educational space and their correlation with professional competences. The comparative method was used in the analysis of soft skills formation of Ukrainian education and European practices. In the analysis of soft skills individual components, the inductive method was used. The results of the study have led to the understanding of soft skills prospect as a fundamental requirement in the modern labor market. The soft skills are universal needs of today’s education

Organizational configuration of hospitals succeeding in attracting and retaining nurses

Organizational configuration of hospitals succeeding in attracting and retaining nurses. This paper contrasts structural and managerial characteristics of low- and high-turnover hospitals, and describes the organizational configuration of attractive hospitals. In countries facing nurse shortages and turnover, some hospitals succeed in recruiting and retaining nurses. In Magnet Hospitals, managerial practices and environmental characteristics increase nurses\u2019 job satisfaction and their commitment to the organization, which in turn decreases nurse turnover. Such an approach suggests that organizations are best understood as clusters of interconnected structures and practices, i.e. organizational configurations rather than entities whose components can be understood in isolation. From a sample of 12 hospitals whose nurse turnover was studied for 1 year, structural and organizational features of hospitals in the first and fourth quartiles, i.e. attractive (turnover11\uc68%) were contrasted. A questionnaire, including perceptions of health-related factors, job demands, stressors, work schedules, organizational climate, and work adjustments antecedent to turnover, was received from 401 nurses working in attractive hospitals (response rate - 53\uc68%) and 774 nurses in conventional hospitals (response rate \ubc 54\uc65%). Structural characteristics did not differentiate attractive and conventional hospitals, but employee perceptions towards the organization differed strikingly. Differences were observed for risk exposure, emotional demands, role ambiguity and conflicts, work-family conflicts, effort-reward imbalance and the meaning of work, all in favour of attractive hospitals (P < 0.01). Relationships with nursing management, work ability and satisfaction with working time, handover shifts and schedules were also better in attractive hospitals (P < 0.001). Job satisfaction and commitment were higher in attractive hospitals, whereas burnout and intention to leave were lower (P < 0.001). Organizational characteristics are key factors in nurse attraction and retention. Nurses face difficulties in their work situations, but some hospitals are perceived as healthy organizations. The concept of attractive institutions could serve as a catalyst for improvement in nurses\u2019 work environments in Europe