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The autochthonous, i.e. local, red wine variety Prokupac is one of the most important varieties in Serbia. In the past, this variety was the leading one in the largest number of wine-growing areas of our country. The Prokupac variety is currently the most represented in the Tri Morave wine-growing region (Central Serbia), while the largest number of vineyards with this variety are located in the Župa wine-growing subregion. Due to its importance as an old and traditional variety, certain researches of this variety have been initiated in recent years in wine-growing areas where Prokupac is traditionally grown. Certain scientific activities were initiated to isolate different genotypes with improved production and use value, all with the aim of clonal selection of this variety. In this paper, some characteristics and quality parameters of the more promising Prokupac genotypes that were isolated in the Župa wine-growing subregion in the Aleksandrovac municipality are presented. More extensive research was carried out on grapes from the harvest of 2019, 2020 and 2021 with 16 selected genotypes, namely eight genotypes from the Latkovac locality and eight genotypes from the Drenča locality. In addition to laboratory analyses of sugar, acid and pH content in the grape must, the theoretical alcohol content was also calculated. Furthermore, spectrophotometric methods were used to determine colour intensity A-420, colour intensity A-520, colour intensity A-620 and total colour intensity, as well as colour tonality. The analyses showed that certain main quality parameters from the research are within the value limits as in earlier research, but that the acid content is generally more optimal for red wine varieties compared to the research of that parameter carried out in the earlier period in other wine-growing areas (Fruška Gora and Čegar wine-growing subregions). Moreover, in our research, the sugar content of the grape is higher than the established values of that parameter in the grape must from the Čegar wine-growing subregion.

Research of uvological characteristics is one of the obligatory steps for determination of general production and technological value of grapevine varieties. Such research is particularly recommended for local varieties that did not previously show sat­isfying characteristics necessary for production of high-quality wine. Local grapevine varieties Smederevka (white wine variety) and Žametovka (red wine variety) have mostly served for production of low-quality wine in the past. With changes in the manner of pro­duction in the sense of focus on high-quality wine and production of wine with geograph­ical indications, vineyards planted with these varieties in Serbia have mostly been grubbed up. However, due to the characteristic and favourable terroir conditions, they have survived in the Trstenik wine-growing district (subregion within the Tri Morave wine-growing re­gion). With the aim of determining uvological characteristics of these two varieties in current climate conditions that are favourable for these high-yield varieties, this paper examines the mechanical composition of grape bunches (bunch weight, number of berries, stem weight), mechanical composition of berries (weight of 100 berries, weight of skin of 100 berries, weight of mesocarp of 100 berries and weight of seeds of 100 berries), as well as grape must characteristics (sugar content and total acids in grape must) of representative genotypes of local varieties Smederevka and Žametovka in production vineyards in the Trstenik wine-growing district. Research results have shown that uvological characteristics of these varieties are slightly better in comparison with previous research carried out in other wine-growing areas, that is, in comparison with general information from literature, which indicates the necessity for further research of these varieties in different agro-eco­logical conditions.

Introduction. Trichobezoars presents a rare form of bezoar made of swallowed hair, with clinical manifestation of gastric or intestinal obstruction, gastric ulceration, bleeding, and perforation. It is predominantly found in emotionally disturbed or mentally retarded youngsters, who eating their own hair which is clinically known as trichophagia. Patients often deny eating their own hair which makes diagnosis difficult. Case report. We present a case of acute gastric outlet obstruction caused by a giant gastric trichobezoar made of a long thin hair, in a 20-year young female. Although patient had a long history of trichophagia, she did not think her behavior was unusual and she had not been treated before. Following the initial diagnostic procedures, exploratory laparotomy was indicated. After anterior gastrotomy was performed, a massive stomach-shaped trichobezoar was removed. Postoperatively, the patient had a psychiatric consult exam. She recovered well and was discharged without complications. She was referred for further psychiatric follow-up. Conclusion. Trichobezoars are non-digestible collections that usually accumulates in stomach and can extend to small bowel, causing mechanical injury such as hollow viscus obstruction. Patients with acute gastric obstruction caused by a giant trichobezoar require urgent removal of the trichobezoar, to preserve the stomach and avoid further, catastrophic consequences.

Introduction/Objective. Acute pancreatitis (AP) is a relatively common disease which in most patients has favorable course. However, in approximately 20% patients, the course of the disease is more severe with high mortality (40–50%). The evaluation of disease severity is now primarily based on protocols that includes clinical, laboratory, and radiographic diagnostic procedures, APACHE II score, Ranson score, CT index, and CT necrosis score. Key cells in the immunopathogenesis of AP are T-lymphocytes, and recent studies indicate the role of Th2 and their effector cytokines: interleukin (IL) -4 and interleukin (IL) -5. The purpose of our study was to determine the potential clinical value of IL-4 and IL-5 as biochemical markers for predicting development of severe, necrotizing form of acute pancreatitis with systemic complication such as systemic inflammatory response syndrome (SIRS). Methods. This prospective study included 240 patients hospitalized at The Clinic for Emergency Surgery of Clinical Center of Serbia as AP. Levels of IL-4 and IL-5 in serum were detected using commercial Bender Med Systems (BMS716FF) kits. Results. IL-4 and IL-5 were statistically significant increased on the second day of hospitalization with maximum values on the third day. In patients with severe AP complicated with necrosis and/or sepsis values were rising all through the seventh day. Conclusion. Levels of IL-4 and IL-5 in peripheral blood correlate with SIRS, Ranson score and clinical outcome in AP patients, therefore these cytokines are potential early biomarkers of disease progression and related complications.

Thin-walled cylindrical shells are commonly used in numerous branches of industry. Since they are subjected to axial load, the most common cause of their failure is buckling. This paper provides numerical analysis and experimental verification of the buckling of the thin-walled aluminium alloy cylindrical shell with special regard to the influence of dent, positioned in the middle of the shell. Numerical simulation was performed using ANSYS 16.2, and experimental verification was performed by means of hydraulic press Armavir, PSU-50, which was used to subject the specimen to the increasing axial load until the occurrence of buckling. Comparing the results it was concluded that there is significant decrease of the buckling resistance if compared the values of the specimen with no dent, and the specimen with 2 mm deep dent. On the contrary, resistance of the 2 mm and 4 mm dented specimen is quite similar. Position and shape of the deformations occurred due to buckling are matching if experimental and numerical results are compared.

This study explores the ethical perceptions of participants in the financial reporting process in order to comprehend the attitudes and evaluation of the acceptability of different approaches to earning manipulations. The paper presents different scenarios for income smoothing, earnings management and big bath. The scenarios include various motives and methods for earning manipulations. The study was carried out on 105 students, 58 in the role of creators of financial reports and 47 in the role of users of financial statements. The results show that there are significant differences in ethical acceptability of various scenarios for earning manipulations, as well as in various methods and motives of manipulation. On the other hand, research has not demonstrated the existence of significant differences in ethical perceptions between the creators and users of financial statements.

In the period 2010-2011 years were studied agrobioioška and technological properties of clones of Pinot Gris (B-10 and Rulander 2/54) in Niš vineyard sub-region. Tests were conducted at the Center for Viticulture and Enology in Niš. Varying heights yield of grapes per year indicate a high and stable cropping investigated clones. Must sugar content varied from 21,31 to 22,79%, and total acid content ranged from 7,66 to 8,09 gl-1. Chemical Two-Analysis wines showed that the resulting wines of good quality. The research results justify the growing clones of Pinot Gris in Niš vineyard sub-region.

The sales of appropriate merchandise is essential for performance of every retail enterprise. The way that products are displayed within retail sales object will be in so much important as the merchandise is considered a pad of the perceived image of that outlet. Thus, assorted products speak to their consumers as far as to what they [the consumers] can expect, and they signal off a number of marketing messages as well. Merchandising is the key element in attracting the consumers and in encouraging of repeated purchases. The question then could be: products or services?, yet the retailer's future will depend on his ability to develop the best sale offers. The selection of appropriate merchandise, and that would be the one [merchandise] that is in accordance with outlet's image, requires careful planning which, again, needs to be related with the direction the seller is following. Managing of the product assortments' dimensions emerges from the retailer's strategic planning, therefore, the decisions made on the inclusion of novel products as well as about deleting of the old stock are deemed (to be) strategic.

Both the actual market flows and dynamiting of power ratios bring about the revolutionary changes within the marketing strategies and basic management approaches, while completely deranging the traditional value system (i.e. system established through marketing channel members' interaction). What is being altered are the market performance patterns, channel communication standards, and forms of institutional pressure manifestation toward the remainder of members which is being performed by the institution with highest economic and negotiating power. Retail company becomes the leader in development of break-the-rule strategies as well as the mutual revolutionary and innovational processes in marketing channel functioning. The final objectives of initiation of co-revolutionary retail strategy with the remainder of marketing channel members are identification and removal of all non-efficient points in the process of development and the process of adding value at all levels of distribution. In addition, these goals are the advanced management of supply chain and integration of consumers with appropriate marketing channel on a long-term basis.