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Using the optical interaction potential between an electron and a helium atom, we have calculated the momentum-transfer cross-section, collision frequency, and energy transfer rate during elastic electron–helium scattering, focusing on energies up to the ionization threshold of helium (24.6 eV). The interaction potential includes static, polarization, and exchange contributions, accurately representing the scattering process in this range. The optical potential method is well-suited for this analysis, as it effectively reduces the complexity of multiparticle interactions while maintaining the essential physics of elastic scattering. The calculated collision frequency as a function of energy exhibits a distinct maximum near 5 eV, consistent with experimental observations, which has not been captured in earlier theoretical studies. The energy transfer rate, derived using the effective collision frequency, demonstrates efficient energy exchange at low electron energies, with a gradual decline as the energy approaches the ionization threshold. These findings offer critical insights into plasma processes in the diverter region of tokamaks, where helium atoms play a significant role, and contribute to modeling energy transport properties such as electron mobility and temperature equilibrium. The results can serve as a valuable reference for plasma simulations and fusion research applications.

This paper analyzes the political and constitutional confrontation of Kosovo and Croatia with the COVID-19 pandemic. The similarities of the constitutional provisions governing emergency situations and possible restrictions on human freedoms and rights in both countries, alongside hybrid parliamentary systems with strong presidents, have produced the same approaches, respectively similar in political and constitutional terms as well as in the academic and professional aspect. Therefore, this paper is focused more on government responses to the situation, including divergences between presidents and governments, as well as constitutional court approaches and respective academic opinions on the subject axis: extraordinary measures within the ordinary or extraordinary legal order with a formal declaration of a “State of Emergency”. Both countries set out for the first model, contenting themselves with amending legal frameworks without a formal declaration of a state of emergency. How and why, it happened is explained in the second and third parts of the paper, resulting in conclusions and recommendations.

The purpose of this paper is to analyze the importance of open public administration and several aspects referring to transparency as a crucial principle of administrative procedure and administrative law as well as how transparency and accountability impact the value of democracy, citizens’ trust and rule of law. Transparency is a fundamental requirement for the reliability and integrity of public institutions in order to promote public trust and public support. Transparency in public administration guarantees legal assurance and increases the level of legitimacy in decision making process. The principle of transparency has a direct impact on the accountability of administration toward the citizens, while citizens are able to get all the information regarding the work of public administration and also are allowed to get involved in the process of decision-making. The transparency in public administration has a great impact in the process of public administration reform and promotes the level of efficiency, effectiveness and responsiveness, as main components of the concept of good administration.

The topic of this comparative study is the republican character of the system of governance in Kosovo. In the public discourse and political communication, as well as in academic discourse Kosovo is considered a Parliamentary Republic, based on the principle “of the separation of powers and checks and balances between them.” Although the constitutional definition of the relationship between the executive and legislative favors parliamentary republicanism, the constitutional powers of the president, the government and especially the constitutional and political power of the prime minister, significantly weaken the parliamentary character, in favor of a semi-presidential system. However, neither the current theories of government, nor constitutional provisions can rank Kosovo among semi-presidential systems, or pure parliamentary systems. Comparisons of competence powers relations in Kosovo, with similar relations and competences of the countries of the region and beyond, testify to the specific nature of parliamentary democracy in Kosovo. It is precisely the comparison of the Kosovo constitutional-legal system of governance with similar systems and theoretical analysis of parliamentary models facing Kosovo model which will be the basis of support of the hypothesis that Kosovo is not a typical parliamentary republic.

Abstract Background The protective effect of the common mallow (Malva sylvestris) decoction on renal damages in rats induced by ammonium metavanadate poisoning was evaluated. On the one hand, vanadium toxicity is associated to the production of reactive oxygen species, causing a lipid peroxidation and an alteration in the enzymatic antioxidant defence. On the other hand, many medicinal plants are known to possess antioxidant and radical scavenging properties, thanks to the presence of flavonoids. These properties were confirmed in Malva sylvestris by two separate methods; namely, the Diphenyl-2-picrylhydrazyl assay and the Nitroblue Tetrazolium reduction assay. Results In 80 rats exposed to ammonium metavanadate (0.24 mmol/kg body weight in drinking water) for 90 days, lipid peroxidation levels and superoxide dismutase, catalase and glutathione peroxidase activities were measured in kidney. A significant increase in the formation of free radicals and antioxidant enzyme activities was noticed. In addition, a histological examination of kidney revealed a structural deterioration of the renal cortical capsules and a shrinking of the Bowman space. In animals intoxicated by metavanadate but also given a Malva sylvestris decoction (0.2 g dry mallow/kg body weight), no such pathologic features were observed: lipid peroxidation levels, antioxidant enzyme activities and histological features appeared normal as compared to control rats. Conclusion Malva sylvestris is proved to have a high antioxidative potential thanks to its richness in phenolic compounds.