Seawater desalination has been studied with interest due to the scarcity of fresh water for human consumption. Solar distillation is an old method; the productivity, energy consumption of the process and the cost of the desalinated water thus obtained depend on the efficiency achieved in each of the stages of these systems. The limited capacity to absorb solar radiation and transform it into useful heat for evaporation, interaction with the surrounding medium, and heat losses restrict the overall efficiency of the thermal process and productivity. Since the energy comes from solar radiation, the maximum productivity of this process will be constrained by the magnitude of the total solar radiation available in an area of the planet due to its geographic location, time of year and local climatic conditions. The processes of this energy will be thermodynamically limited by the heat transfer coefficients achieved in the equipment, the maximum value that the evaporation heat can reach, as long as the losses to the environment by convection and radiation are minimal. Comparative analyses of several proposed models, reported data of distillers, reported data of solar radiation that reach average values of up to 7.2–7.4 kwh/m² in some regions of the planet are presented and estimates are made for productivity of these equipments that they reach between 6.7 and 6.9 kg/m² day with a theoretical maximum efficiency of about 0.16 of the total solar radiation.

Job satisfaction is a goal of every organization and human resources department. Many studies have shown the relationship between employee satisfaction as a predictive factor for a variety of key organizational indicators such as employee commitment, employee engagement, productivity, attrition, and turnover. Engaging in well-being activities is one strategy that companies can use to boost employee satisfaction. The term “well-being” activities in Hebrew is a bit different from the common use of the word in the literature. It is a combination of the concepts of Fun Activities, Employee Experience and Perks and Benefits. In High-tech companies, there are many activities aimed at creating a positive employee experience and an attractive organizational culture. These activities include a vast range of activities such as: department events, happy hours, company events, holiday gifts, enrichment activities, sports classes (for example, yoga), and more benefits. Despite the considerable investment in this budget, there are not many studies illustrating the contribution of well-being activities to employee satisfaction and their ROI. The purpose of this study was to examine the relationship between workplace well-being activities and job satisfaction in the Israeli high-tech market. The hypothesis of this study was that there is a positive relationship between well-being activities in the workplace and satisfaction in the workplace, but also to identify which issues within the well-being policy will predict the highest level of employee satisfaction. The study was conducted among 91 employees from a variety of high-tech companies in the Israeli market. The study’s findings supported the hypothesis. Practical suggestions for organizations for the successful implementation of well-being policies are discussed.

The heat collection evaporator was modeled based on equilibrium homogeneous theory, and the Runge-Kutta calculation method was used to analyze and solve the flow in the heat collection evaporator. The influence of environmental factors such as solar irradiance, ambient temperature and wind speed on the variation of refrigerant pressure in two kinds of heat collecting evaporator was analyzed under the set working conditions. The results show that the solar energy irradiance has a great influence on the pressure drop in the tube of serpentine heat collecting evaporator, and the maximum pressure drop of the refrigerant in the tube is 16.3%, minimum pressure drop is 7.8%. However, it has little influence on the pressure drop of the tube sheet evaporator. The maximum pressure drop in the refrigerant tube of the tube sheet evaporator is 4.8%, minimum pressure drop is 1.8%. When the irradiance reaches 800 W/m², the refrigerant in the serpentine-tube evaporator has been completely vaporized at 6 m, it’s completely vaporized at 3 m.

The article presents an analysis of the main causes and social consequences of the transformation of employment in the conditions of the transition of the world economy to post-Fordism/neoliberalism at the end of the 20th century. The author discusses the main methodological approaches to the study of this problem and also dwells in detail on the analysis of such important consequences of the transformation of the labour sphere as the increase in the vulnerability of workers’ employment, the growth of inequality, the weakening of the strength of trade unions, etc.

Employee retention is a critical concern for organizations in today’s dynamic labor market. This paper introduces a novel framework, integrating “absolute potential of the employee” and “risk associated with leaving the employee”, to address this challenge. Findings from the study suggest that this framework can effectively assist organizations in strategizing retention techniques. The research methodology employed an exploratory research design and collected data from 576 employees across various sectors. The results indicate significant implications for organizational risk assessment and employee retention strategies.

The objective of the work was to evaluate and compare the physicochemical characteristics of an experimental cabotiá hybrid with the commercial hybrid Tetsukabuto. The genotypes were divided according to mass (kg), and were evaluated for quality. The color parameters evaluated showed no significant difference, although visually the hybrid was different from the commercial variety. It was possible to conclude that the size of the fruits does not influence the concentration of the compounds, and also, an inferiority of HC05 was observed with respect to the relevant quality characteristics in pumpkins, such as soluble solids content, carotenoids and vitamin C.