Development of innovative technological solutions in animal production should be associated with reduction of greenhouse gases, ammonia emission, and with rational disposal of natural fertilizers. The presented solutions and concepts of biogas acquisition and its disposal as well as a disposal of digestate mass place a need to improve the technological process before the science. The main aim of the presented solutions for the use of methane fermentation of a natural fertiliser in agricultural conditions is their utilization and energy acquisition, in particular for households and farms. When considering the issue of methane fermentation, one should include all favourable fertilization, energy aspects and firstly, the ecological ones. During the methane fermentation, substrates are stabilized due to removal of a large amount of carbon. The only elements that are removed from the system are evolving gases: CH4, CO2 and H2S. During the discussed process, the entire nitrogen is preserved in the organic or ammonia form.
A modern model of agriculture is based on three orders - organic, social and economic. An attempt was made in this paper to apply cluster analysis for assessment of economic and organic sustainability of organic farms. Factors that statistically influenced a decision on which farms should be recognised as sustainable were indicated. Analyses allow the following conclusion: 1) in organic farming, animal production including cattle breeding and rearing must be based on a high acreage of permanent grasslands; 2) neither the performed production processes nor the level of their automation rate or the level of organic balance do not decide on the production effectiveness, but factors of the surrounding including social factors.
University and business cooperation offers many benefits not only for the parties involved. It translates into innovation and competitiveness of the economy. The relationship encounters many barriers that are related to the environment (both internal and external) in which it is implemented. The aim of the article is to identify the determinants of university-business cooperation (areas of cooperation, barriers, motivations) and to point out recommendations from the perspective of scientists in Poland and the United States (USA). The experience of USA researchers can be used as a background for considerations about cooperation between universities and business in Poland, and as an example of good practices for the purpose of supporting and improving the analyzed relationships. The article focuses on selected determinants of university and business cooperation: areas of cooperation, barriers limiting it, motivations for cooperation and the possible options for its improvement (recommendations of researchers). In order to achieve the assumed goals, an individual, in-depth interview was conducted with the use of a questionnaire as the research tool. The presented results of the research showed significant differences between the models of university and business cooperation in Poland and the USA.
The main goal of the study will be to pay attention to awareness of technological and digital development. Sense of responsibility unites certain groups of entrepreneurs, scientists and decision-makers. The main principles of the idea of corporate social responsibility are related to maintaining balance in business activity between three kinds of capital - economic, human and natural. Following the technological and digital development in recent years, more attention is given to socially responsible creation and implementation of innovation. Corporate Digital Responsibility (CDR), which in recent months has been taking formal shape, is a new initiative within social responsibility. CDR means the awareness of duties binding the organisations active in the field of technological development and using technologies to provide services. The article refers to the dynamic development of technologies that threatens also global labour market due to automation and mass implementation of solutions based on artificial intelligence. Being aware of this dynamic process it is worth to emphasise that businesses and employees have far less time to thoroughly examine social consequences of ongoing implementations related to digitalisation.
Nodular cast irons are used in a wide range of industrial applications, especially in the automotive industry. SiMo-type of nodular cast iron is suitable for high-temperature applications, for example the exhaust manifolds of the combustion engines; SiCu-type of nodular cast iron is used in various components of tribotechnical units. These automotive components often work in a corrosive environment. Therefore, the aim of this paper is to compare the corrosion resistance of two types of the nodular cast irons (SiMo-type and SiCu-type). Corrosion resistance was determined by the exposure immersion test at ambient temperature. Specimens of both types of nodular cast iron were immersed in 3.5 % NaCl solution (to simulate sea water) and gradually removed from the solution after 1, 2, 4 and 8 weeks. Subsequently, the weight loss (g) and the average corrosion rate (g m−2 day−1) were calculated. Experimental results show that nodular cast iron alloyed by Si and Mo has higher corrosion resistance than the nodular cast iron alloyed with Si and Cu. Moreover, the mechanical properties (evaluated by tensile test, impact bending test and hardness test) and fatigue properties of both types of nodular cast iron has been compared in the paper.
The paper presents good practices and selected problems of creating cooperation networks. The basics of creating and disseminating new forms of cooperation between enterprises and universities have been described. Based on the implemented international project “3DCentral - Catalyzing Smart Engineering and Rapid Prototyping”, selected conclusions from creating network and management of many project activities including innovative technologies are presented.
In this work on the basis of the developed and tested mathematical model, the numerical experiment is conducted in order to study in more detail the specifics of performance of concrete beams` with combined reinforcement. For this purpose nine series of reinforced concrete beams with different combination of steel bars (A400C, At800, A1000) and ribbon reinforcement (C275) were modeled. In the developed series two classes of concrete were used: C50/60, C35/45. The functions derived on the basis of mathematical modeling allow us to determine the recommended percentage of high-strength reinforcement of common reinforced concrete structures with single reinforcement. Therefore, the possibility is obtained to reduce the total structures` reinforcement percentage, increasing their deformability by the specified value without affecting the bearing capacity.
The paper discusses nucleate boiling heat transfer on meshed surfaces during pool boiling of distilled water and ethyl alcohol of very high purity. It presents a correlation for heat flux developed for heaters covered with microstructural coatings made of meshes. The experimental results have been compared with the calculation results performed using the correlation and have been followed by discussion. Conclusions regarding the heat flux determination method have been drawn with the particular focus on the usefulness of the considered model for heat flux calculations on samples with sintered mesh layers.
Building a strong economy depends on numerous factors: technological, political, geographical but also and above all social ones. Currently, the ongoing fourth industrial revolution is primarily based on digitization of all processes in the conducted activities. The acquisition and processing of vast amount of data generates information which is very complex and not always unambiguous. Industry 4.0 also assumes that employees will understand both technical needs and those not related to the production process. This means that the present education system (definitely the one related to technical science) should also be changed so that engineers acquire more managerial skills. The article presents the educational assumptions in the face of challenges posed by Industry 4.0 in the context of the current opportunities of the labor market and education in Poland and in Europe.
Physical activity is an inseparable sphere of human life, and is not rarely associated with work. Evolution has adapted man to perform various activities that meet their life needs. Man is created for walking, sitting, lying and standing. All these activities should take place in turns. Physical work should be varied in terms of dynamics and not limit people to stay in one position while performing work. The position changes, among others, to increase blood pressure, in addition, stimulates the heart and respiratory system, as well as improves the efficiency of both physical and mental work. In turn, taking only one position for a long time, which often occurs in static physical work, causes many health problems. For musculoskeletal disorders related to a non-ergonomic work position and a forced position at work, every fourth employee in Europe complains. In Poland, musculoskeletal disorders are one of the most common causes of absence at work. In Polish enterprises, the assumption that profit is the most important is still dominant. Man is rarely seen as the most important capital of an enterprise that needs to be taken care of. For many employers, all additional measures related to shaping safe working conditions are only costs, not investment and potential profit. This paper presents the effects of static physical work in relation to work safety in the light of publicly available reports and information. The review has been enriched with the results of research carried out in one of the production enterprises of the SMEs sector. The research results presented in the paper are pilot and constitute an introduction to a large research work.