The article presents the research into hygienizing process of chicken manure using calcium peroxide (CaO₂) as an environmentally friendly biological deactivation agent. The influence of the addition of CaO₂ to chicken manure on the bioavailability of phosphorus was also analyzed. The process of biological deactivation using CaO₂, CaO and Ca(OH)₂ agents was analyzed applying the disk diffusion method. To optimize the effect of the hygienizing parameters, (CaO₂ concentration, pH, temperature and time) on the reduction of Enterobacteriaceae count the Taguchi method was applied. The content of bioavailable phosphorus was measured with the Egner-Riehm method and determined with spectrophotometry. The reduction in bacterial count followed an increase in the concentration of CaO₂ in a sample. The optimal experimental conditions (CaO₂=10.5 wt.%, pH=9.5, T=40°C, t=180 h) enabled a significant decrease in the Enterobacteriaceae count, from 10⁷ cfu/g to 10² cfu/g. Analysis of the samples with Egner-Riehm method showed that the phosphorus content decreased with the addition of biocide CaO₂: from 26.6 mg/l (for 3.5 wt.%) to 3.5 mg/l (for 10.5 wt.%). These values were slightly higher than the content of phosphorus deactivated with Ca(OH)₂ i.e., from 11.25 mg/l (for 3.5 wt.%) to 4.49 mg/l (for 10.5 wt.%). The application of CaO₂ for hygienizing chicken manure enables effective reduction of Enterobacteriaceae count to an acceptable level (below 1000 cfu/g). In comparison with the traditional techniques of hygienization, the application of CaO₂ has a positive effect on the recovery of bioavailable phosphorus.

The paper presents the result of an evaluation of the performance of different message broker system configurations, which lead to the construction of the specific architecture guidelines for such systems. The examples are provided for an exemplary middleware messaging server software - RabbitMQ, set in high availability - enabling and redundant configurations. Rabbit MQ is a message queuing system realizing the middleware for distributed systems that implements the Advanced Message Queuing Protocol. The scalability and high availability design issues are discussed and the possible cluster topologies and their impact is presented. Since HA and performance scalability requirements are in conflict, scenarios for using clustered RabbitMQ nodes and mirrored queues are interesting and have to be considered with specific workloads and requirements in mind. The results of performance measurements for some topologies are also reported in this article.

The article provides an overview of the supranational bank resolution regime established under the Single Resolution Mechanism framework. Both the substantive rules governing the resolution process and its procedural requirements are explained. The main focus of the article is the decision-making practice of the Single Resolution Board (SRB), an EU agency responsible for the execution of the resolution framework, which has already intervened in a number of cases in which banks were considered “failing or likely to fail” by the European Central Bank. The article analyses the existing decisions on resolution action in order to establish how the substantive rules on resolution are interpreted by the SRB in its decision-making practice.

The concept of intergenerational justice is deeply rooted into the regulation of activities in the Area. United Nations Convention on the Law of the Sea on many occasions stresses the need to protect the marine environment in the interest of both contemporary and future generations. One of the institutions with vast competences in this field is the International Seabed Authority. With a perspective on inevitable commercial exploration and exploitation of seabed resources there is a need to answer the question if the Seabed Authority is properly prepared both in the field of law and policy to act as a steward of a mankind? Which instruments has been developed to ensure sustainable use of seabed resources and which of them are at the disposal of the International Seabed Authority? Finally, are the standards of the protection of seabed environment sufficient to satisfy the needs of contemporary consumption without diminishing the ability of the mankind in the future to freely choose their path of development? We can assume that environmental standards which would protect the interest of future people would also secure the sustainability in contemporary use of common heritage at the Seas. International Seabed Authority and international law of the sea can play important role in this process by shaping the future of the mankind with actions undertaken today.

The article presents a part of the research on the Russian and Polish lexical units containing the глуп-/głup- root. The noun, verb and adverb forms have been analysed from the point of view of their meanings and the functional, stylistic and derivational properties. That is why the research material includes the contemporary units such as colloquialisms and lexemes of the restricted usage (archaisms and linguistic variants) which occur in both languages. The lexical units have been selected from the contemporary and historical explanatory and etymological dictionaries as well as from the former and dialectal lexis.

We all gesture as we talk, albeit mostly unconsciously. The gestures we produce support and supplement what we are saying. In different cultures, however, the very same gestures may carry very different meanings.

Dr. Maciej Maryl, Head of the Digital Humanities Center and Deputy Director at the Institute of Literary Research, Polish Academy of Sciences, talks about the table where innovations are born, the limits of literariness, and Polish humanities projects that can conquer the world.

The teaming up of hydrology and ecology offers one source of hope that the world's water crisis might be kept under control. But how can hydrology, a technology-oriented field, be integrated with ecology, which prioritizes living organisms?

The interiors of the Imperial Castle in Poznań are embellished with scores of different stone varieties. In order to preserve and renovate them, an in-depth conservation examination needed to be performed.

The word “sensitivity” has many meanings, ranging from more mundane technical senses, to meanings specific to statistics and machine learning, all the way to the most human understanding of the concept – that of tender emotions.

A pioneering research project on Polish Sign Language (PJM) aims to thoroughly study this language's grammar and to develop a dictionary for it, so as to make the world of deaf individuals who use PJM more accessible. Such research is also helping us garner a better understanding of the most elementary mechanisms of the human language faculty.

The International Center for Ecology focuses on advancing the science of ecohydrology and on the practical application of its principles, so as to regenerate our drinking water resources and improve their quality.

Although the possible existence of extrasolar planets, similar to the Earth or different, has intrigued astronomers for centuries, it was only in the early 1980s that the technical capacity to discover them emerged.

For more than two centuries, scientists and technologists have been seeking better and cheaper methods of chemical synthesis using catalysts - molecules that can accelerate and boost the efficiency of certain chemical processes. But over millions of years of evolution, Nature itself has developed extremely specialized catalysts, called enzymes. Chemists are nowadays looking more and more to such extant bio-catalysts found in living organisms.

Poland's accession to the EU has focused attention on the need for industry and science to work together - something the Institute of Fundamental Technological Research has always prioritized.

We still know very little about a sense whose function we hardly ever notice, but whose dysfunction is immediately problematic.

Modern research methods, including analyses of chemical elements and isotope ratios of individual elements, can help us unravel mysteries of the past. Studies of metal ore mining activity in ancient South America reveal clues about the economic development of pre-Columbian civilizations across vast areas of the continent.

It turns out that the magical world behind the looking-glass portrayed in Lewis Carroll’s novel about Alice is real – it has been discovered and described by physicists. So how do we find a way in?

In spite of severe brain size limitations, many spiders are able to solve complex problems, recognize their prey with great accuracy, and learn new hunting techniques.

We talk to Dr. Maciej Jórdeczka from the PAS Institute of Archaeology and Ethnology in Poznań about archaeological surprises, Neolithic medicine and paying respect to our deceased.

Machine linguistic tools are now so widespread that we barely notice them. But we don't like to conform to their whims - rather, we want them to adapt to us, to start to understand what we say or write, be it in English, Polish, or otherwise. This requires effective text analysis methods, and digital tools are becoming increasingly sophisticated in response.