The authors present the life and work of prof. dr. Radoslav Živić - Rade who will be remembered as an exceptional pediatrician, professor of lofty pride and morals and a writer who occupies a special place in the contemporary Serbian narrative milieu in which it is difficult to find a prose writer and sensitivity to the meaning of words and the ability to visualize and fruitful grafting in the literary art of Serbia.

Radiological examination methods in the diagnosis of kidney disease, thanks to their objectivity and their capabilities, have taken their place in the diagnosis of urosystems and kidney disease. Radiological methods of examination in the diagnosis of the kidney are numerous and diverse. They are sovereign, dominant and unrivaled. However, the dangers that lurk and threaten in their application, especially ionization and complications from iodine contrast agents, indicate and say that they should be used in strict indications, with well-educated staff and with full protection measures. The aim of this paper is to show and point out the number, variety, advantages and disadvantages of radiological methods of examination in kidney diagnostics. The material and method of work is the experience gained in the profession based on urographic examinations and other radiological methods of examination of the urogenital system, primarily in 18,000 IVUs performed in the period 1994-2021. at the Center for Radiology of the University Medical Center Nis and numerous literal announcements of authors and co-authors written in domestic and foreign journals. The results of the work are shown illustratively, with pictures - nephrocalcinosis, renal cyst, pheochromocytoma, VUR V 0 , kidney tumor, color doppler of the renal artery, a series of native and contrast spiral CT tomograms of the kidney. The development of radiological techniques in recent decades has enriched radiological diagnostics with new diagnostic possibilities. Therefore, we received new radiological images, in which our results are compatible with numerous literal world releases. In conclusion, the authors point out that radiological methods in the diagnosis of kidneys are indispensable and, among other methods of examination, indispensable.

The development of science and technology introduces new approaches in plant breeding and various methods to increase plant productivity. One of the latest methods is the implementation of an environmentally friendly technique of using a pulsed low-frequency electromagnetic field (PEMP). The paper presents the results of the influence of the electromagnetic stimulation of soybean seeds on grain weight per plant, weight of 1,000 grains and grain yield in different agroecological conditions. In the three-year research, in the period from 2013 to 2015, the soybean variety Valjevka was used, grown with different amounts of fertilizers (control - without fertilization, 750 kg/ha and 1300 kg/ha). Before sowing, the seed was subjected to PEMP stimulation in variants: control - without stimulation and alternating magnetic field stimulation (PEMP) with induction of 30 mT and exposure time of 15 minutes. The average grain weight per plant during seed stimulation was 11.53% (12.09) higher than without PEMP (10.84). The weight of 1,000 grains with PEMP was 155.99 g, which was 2.06% higher than the weight of 1,000 grains of the variant without PEMP (152.83 g). The average soybean grain yield for all three years of research with seed stimulation was 4.85% higher (3,481.25 kg/ha) than without PEMP (3,320.14 kg/ha). Stimulation of seeds with PEMP has economic justification given the growth of soybean prices on the world stock market. The results show that the PEMP treatment of soybean seeds can significantly affect soybean grain yield and counteract side effects such as drought and lack of fertilizers.

From the very knowledge of Industry 4.0, its implementation is carried out in all segments of society, but we still do not fully understand the breadth and speed of its implementation. We are currently witnessing major changes in all industries, so new business methods are emerging. There is a transformation of production systems, a new form of consumption, delivery, and transportation, all thanks to the implementation of new technological discoveries that cover robotics and automation, the internet of things (IoT), 3D printers, smart sensors, radio frequency identification (RFID), etc. Robotic technology is one of the most important technologies in Industry 4.0, so that the robot application in the automation of production processes with the support of information technology brings us to smart automation (i.e., smart factories). The changes are so deep that, from the perspective of human history, there has never been a time of greater promise or potential danger.

U ovom radu ponudit će se rodna analiza potreba i mogućih pravaca reforme izbornog zakonodavstva Bosne i Hercegovine. Fokus rada će biti na tri centralna istraživačka pitanja. Prvo, analizirat će se u kojoj mjeri i na koji način konsocijacijski politički sistemi o(ne)mogućavaju predstavljanje žena u politici. Pri tome će se u obzir uzeti različite dimenzije predstavljanja (formalno, deskriptivno, sadržajno i simbolično predstavljanje). Drugo, analizirat će se da li je Izborni zakon Bosne i Hercegovine usklađen sa Zakonom o ravnopravnosti spolova Bosne i Hercegovine. I treće, ispitivat će se u kojem pravcu se trebaju i mogu odvijati reforme izbornog zakonodavstva BiH. U tom kontekstu biće predstavljene i preporuke CEDAW komiteta i različite rodno odgovorne inicijative za reforme izbornog zakonodavstva koje dolaze kako od institucija nadležnih za rodnu ravnopravnost, tako i iz sfere civilnog društva.

In this paper we will present the Julia set and the global behavior of a polynomial second-order difference equation of type xn+1 = axmn xx-1 + axm+1 n-1 + bxn-1 where m ? N, a > 0 and b ? 0 with non-negative initial conditions.

This research presents the first findings on thrombopoiesis for Wistar rats. Haemopoietic cells from the femur and the sternum were analysed by light microscopy in combination with infrared and near-ultraviolet light for fine cytoplasmic structure analysis. Five main types of thrombocyte precursor cells were identified in the bone marrow samples: megakaryoblast, promegakaryocyte and megakaryocyte (basophilic, acidophilic and thrombocytogenic). More intensive thrombopoiesis and morphologically differentiated cells were found in sternum samples.

Background/Aim: Organophosphorus compounds (OP) bind to acetylcholinesterase (AChE) causing an irreversible inhibition of the enzyme. When doing in vivo studies of OP intoxication, to precisely measure AChE activity in the brain tissue it is necessary to remove as much blood from the brain as possible. By doing so, interference of the OPs present in the blood is avoided. Usually this demands expensive equipment, therefore, the aim of this study was to find a simple and economical method to eliminate the blood from brain blood vessels. Methods: Wistar albino rats were divided into four groups named Control (C), Control washout (CW), Paraoxon (Pox) and Paraoxon washout (PoxW) group. Rats in Pox and PoxW were treated with 0.25 mg/kg paraoxon subcutaneously (sc), while C and CW received 1 mL/kg sc saline instead. The "Marinković-Maksimović" ("MM") method was performed in rats from PoxW and CW groups. Activity of AChE was measured both in erythrocyte lysate and in brain tissue using spectrophotometry. Results: Macroscopic examination revealed that the elimination of blood was achieved in CW and PoxW groups. Activity of AChE in homogenised brain tissue was expectedly lower in the Pox and PoxW group, when compared to C and CW group, respectively. The CW group had a lower value of AChE activity in the brain tissue compared to C group, while activity of AChE in the PoxW group was statistically higher than in the Pox group (p = 0.044). Conclusion: The MM method provides good elimination of blood from the brain. Together with blood, present confounding factors that interfere with analysis in homogenised brain tissue, were also eliminated.