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У раду се говори о говедарству на територији Русије/Савеза Совјетских Социјалистичких Република и Краљевине Срба, Хрвата и Словенаца/Југославије у XIX вијеку пред Први свјетски рат, за вријеме рата и између два свјетска рата, на основу објављених извора и релевантне домаће и стране литературе. Наведене су расе говеда, анализиран је и упоређен укупан број говеда, број на km², број на 1.000 становника, као и проценат заступљености у оквиру главних сточних врста. Упоређен је проценат крава, волова, бикова, јунади и телади у оквиру стада говеда заступљених у објема земљама. Посебан акценат дат је учешћу пољопривреде у укупном бруто националном дохотку земаља, стању пољопривреде у Совјетском Савезу за вријеме колективизације и извозу говеда из Краљевине Југославије.

In this study, we developed TiO2-coated aluminum (TiO2/Al) surfaces using eco-friendly methods to create efficient and environmentally friendly photoactive materials with the potential to enhance water purification systems. TiO2 particles were deposited onto aluminum foil surfaces via a spray method, followed by heat treatment at 200 °C for 15 min. The morphology of the TiO2/Al surfaces, both before and after photocatalytic treatment, was characterized using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The photocatalytic properties of these modified surfaces were evaluated through the degradation of rhodamine B (RB), methylene blue (MB), and methyl orange (MO) under simulated solar and UV–LED irradiation. Among the dyes tested, MO exhibited the highest degradation, influenced by factors such as absorption maximum, molecular structure, charge, and the number of condensed rings. The computational study of interactions between dye molecules and the combined nanoparticle revealed that the binding was the strongest in the case of MO dye. This study also explored the influence of varying the number of TiO2/Al surfaces in solution (one, five, and ten) on the photodegradation efficiency. The solution with five TiO2/Al surfaces demonstrated optimal performance, achieving a 16% degradation of RB. The reusability of the TiO2/Al surfaces was confirmed through five successive runs of RB degradation. The results indicate that TiO2/Al surfaces are a promising solution for addressing water contamination challenges and advancing sustainable water treatment practices.

Cheese is a dairy product used directly for human consumption or indirectly as an ingredient of other foods or ready meals. Being an extremely valued product, cheese is a concentrated source of proteins, vitamins and minerals, especially calcium, phosphorus and magnesium. Various spices are used to enhance the taste of food, which also have numerous medicinal properties. The aim of this study was to examine the effect of the addition of different spices on the mineral composition of cheeses, obtained by heat-acid coagulation of milk. There were six different samples of cheese produced in the milk processing plant (mini cheese factory). The first sample was taken as a control one, with no addition of spices, and the other five were produced with 0.5% addition of different spices (oregano, basil, parsley, rosemary, and chives). The total ash content and the content of macro- and microelements were determined in the tested cheese samples. It was established that the addition of different spices has a statistically significant (p

This comprehensive review covers recent advancements in utilizing various types of polymers and their modifications as photocatalysts for the removal of pharmaceutical contaminants from water. It also considers polymers that enhance the photocatalytic properties of other materials, highlighting their dual role in improving water purification efficiency. Over the past decades, significant progress has been made in understanding the photocatalytic properties of polymers, including organic, inorganic, and composite materials, and their efficacy in degrading pharmaceuticals. Some of the most commonly used polymers, such as polyaniline, poly(p-phenylene vinylene), polyethylene oxide, and polypyrole, and their properties have been reviewed in detail. Physical modification techniques (mechanical blending and extrusion processing) and chemical modification techniques (nanocomposite formation, plasma modification techniques, surface functionalization, and cross-linking) have been discussed as appropriate for modifying polymers in order to increase their photocatalytic activity. This review examines the latest research findings, including the development of novel polymer-based photocatalysts and their application in the removal of pharmaceutical compounds, as well as optimization strategies for enhancing their performance. Additionally, challenges and future directions in this field are discussed to guide further research efforts.

The inadequate existence of practical techniques for water purification poses a prominent and widespread global environmental challenge. This study aims to clarify the efficacy of xanthan application in the photocatalytic removal of nadolol, pindolol, and cefoperazone from water reservoirs. Under the influence of a simulated solar light source, xanthan exhibited significant degradation rates for pindolol (77%) and cefoperazone (91%). In contrast, nadolol's degradation efficiency was notably lower (10%). These findings suggest that the molecular structure can substantially influence the efficiency of the purification process. Computational analyses were conducted to gain a more profound understanding of the implications of molecular structure.

Background: Mobility of lung tumors is induced by respiration and causes inadequate dose coverage. Objective: This study quantified lung tumor motion, velocity, and stability for small (≤5 cm) and large (>5 cm) tumors to adapt radiation therapy techniques for lung cancer patients.Material and Methods: In this retrospective study, 70 patients with lung cancer were included that 50 and 20 patients had a small and large gross tumor volume (GTV). To quantify the tumor motion and velocity in the upper lobe (UL) and lower lobe (LL) for the central region (CR) and a peripheral region (PR), the GTV was contoured in all ten respiratory phases, using 4D-CT. Results: The amplitude of tumor motion was greater in the LL, with motion in the superior-inferior (SI) direction compared to the UL, with an elliptical motion for small and large tumors. Tumor motion was greater in the CR, rather than in the PR, by 63% and 49% in the UL compared to 50% and 38% in the LL, for the left and right lung. The maximum tumor velocity for a small GTV was 44.1 mm/s in the LL (CR), decreased to 4 mm/s for both ULs (PR), and a large GTV ranged from 0.4 to 9.4 mm/s. Conclusion: The tumor motion and velocity depend on the tumor localization and the greater motion was in the CR for both lobes due to heart contribution. The tumor velocity and stability can help select the best technique for motion management during radiation therapy.

Given that the presence of fumonisin as a potentially carcinogenic com­pound in the aqueous medium was confirmed, it is very important to find a method for its effective removal. In this study, the degradation efficiency of fumonisins in aqueous media was investigated by direct and indirect photolysis under simulated solar irradiation (SSI). The initial pH value had a significant effect on the kinetics of fumonisin B1 (FB1) degrada­tion, with the highest efficacy observed at pH 4.0 (88%), and the lowest at pH 10.0 (21%) during the 180 min of irradiation. Under these experimental conditions, FB1 photolysis in the first degradation period follows pseudo-first-order kinetics. In comparison to direct photolysis, indirect photolysis using H2O2 had an inhibitory effect on the degradation of FB1. Namely, 24% of FB1 was degraded during 180 min of irradiation at pH 8.0, while 74% was degraded by direct photolysis for the same period of time. In the case of the application of indirect photolysis using S2O82- at pH 4.0, the degradation efficiency of FB1 (91%) was similar as in the case of direct photolysis (88%), at the same pH, as well as for the same period of time. Considering the degradation efficiency, it was concluded that in both cases only direct photolysis was performed, probably because SSI does not contain suitable wave­lengths for sulfate radical (SO4•-) formation. Based on this, we can conclude that direct photolysis at pH 4.0 is practically the most suitable treatment for FB1 removal under SSI.

In this study, the effect of incorporation of the plant extracts in a natural casing on the color and sensory attributes in fermented sausages, “sucuk” type, was evaluated. The sausages were produced in industrial conditions, stuffed into the pretreated natural casings, vacuum packaged, and stored at 4˚C for six months. Five groups of sausages were tested, C1 (natural casing without treatment), C2 (treated with 6% (v/v) ethanol), C3 (treated with ascorbic acid), A (treated with ethanol extract of Aronia melanocarpa), and D (treated with ethanol extract of Cornus mas). Based on the results, it was concluded that the use of Aronia extract had an effect on the color of the surface. During storage, there was an increase in lightness (L*) and the proportion of red color (a*), and also a slight increase in the proportion of yellow color (b*). There were no major changes in the color parameters on the cross-section of the sausage. Sensory testing of the sausage samples found that there was no difference between the tested samples in terms of external appearance, while the results of the "different from control" - DFC test showed that the A sample was visually more acceptable and had a nicer surface color.

Our study provides valuable insights into the photoinduced degradation of nadolol in the Danube River through catalytic oxidation with radicals. The presence of H2O2 under UV and UV-LED irradiation significantly enhanced degradation efficiency. The water matrix complexity had a significant impact on process efficiency. Nitrate, chloride, and sulfate ions exhibited an inhibitory effect on nadolol degradation by quenching •OH radicals. Additional analyses, including catalase activity, lipid peroxidation, and computational analysis, revealed proposed degradation intermediates. Six degradation intermediates were proposed, along with their NMR chemical shifts. The degree of mineralization and in vitro toxicity were assessed.

The study comprehensively investigates the design and performance of self-cleaning surfaces fabricated by coating aluminum foil with an acrylic paint matrix enriched with different content of titanium dioxide (TiO2) nanoparticles. The main goal was to assess the self-cleaning characteristics of the surfaces obtained. This study employs scanning electron microscopy (SEM) to analyze the morphology of TiO2-modified acrylic surfaces, revealing spherical particles. Raman spectroscopy elucidates signatures characterizing TiO2 incorporation within the acrylic matrix, providing comprehensive insights into structural and compositional changes for advanced surface engineering. Alternating current (AC) impedance spectroscopy was used to assess selected charge transport properties of produced self-cleaning surfaces, allowing us to gain valuable insights into the material’s conductivity and its potential impact on photocatalytic performance. The self-cleaning properties of these tiles were tested against three frequently used textile dyes, which are considered to pose a serious environmental threat. Subsequently, improving self-cleaning properties was achieved by plasma treatment, utilizing a continuous plasma arc. The plasma treatment led to enhanced charge separation and surface reactivity, crucial factors in the self-cleaning mechanism. To deepen our comprehension of the reactive properties of dye molecules and their degradation dynamics, we employed a combination of density functional tight binding (DFTB) and density functional theory (DFT) calculations. This investigation lays the foundation for advancing self-cleaning materials with extensive applications, from architectural coatings to environmental remediation technologies.

β-blockers are known to have negative effects on fish and other aquatic animal species, so their removal is key for preserving aquatic ecosystems. To reduce the risks related to β-blockers, it is necessary to assess their effects and develop more effective treatments such as advanced oxidation processes. Improving sewage treatments is a critical approach to reducing β-blockers in aquatic environments. In this work, for the first time, the direct and indirect photolysis of nadolol (NAD) was investigated under different light sources (simulated solar (SS), UV-LED, and UV radiations) in ultrapure water. Indirect photolysis by H2O2 showed 1.5, 2.1, and 5.6 times higher NAD degradation efficiency than direct photolysis under mentioned irradiations. This effect was particularly pronounced in the presence of UV radiation, in which the degradation efficiency of NAD was the highest (80.2%). Computational analysis based on density functional theory calculations, together with the results of NAD photodegradation efficiency in the presence of radical scavengers (isopropanol and benzoquinone), was used to propose the NAD degradation mechanism. Sixteen degradation intermediates were proposed, along with their NMR chemical shifts. Also, this study analyzed the degree of catalase activity, lipid peroxidation, and hydroxyl radicals neutralization of NAD and its photodegradation mixtures obtained after indirect photolysis. The degree of mineralization and in vitro toxicity of NAD and its degradation intermediates obtained in the presence of UV/H2O2 were assessed.

Proteins are the most important ingredients in meat. They are found in meat in different forms and with different functions. Thymosins are small proteins present in many animal tissues, with molecular weights of 1000–15000 Da. The technological processing of meat causes changes in the amount and shape of the basic ingredients. During the freezing of meat and its storage in the frozen state, various chemical reactions take place causing changes in the proteins. The aim of this paper was to examine the influence of the freezing rate and thawing methods on the changes and behaviour of thymosin proteins in pork meat (M. longissimus thoracis et lumborum) during storage. Protein analyses were performed using capillary gel electrophoresis (CGE) and the SDS-MW Analysis Kit (Beckman Coulter). The meat samples were frozen at 10 different rates (from 0.23 cm/h to 1.43 cm/h). The samples were tested at different times during 60 days of storage at -20o C (after 1, 15, 30, 45, 60 days). Before the analysis, the samples were thawed in the refrigerator, at room temperature and in the microwave. After one day of storing frozen meat samples, the relative concentration of thymosin was less than 1% in all tested samples. During 60 days of storage, most samples had a slight increase in the relative concentration of thymosin. The highest relative concentration of thymosin after 60 days of storage (1.67%) was recorded in a meat sample that was frozen at a rate of 1.10 cm/h and thawed in a microwave oven.

Using food additives (e.g., preservatives, antioxidants) is one of the main methods for preserving meat and meat product quality (edible, sensory, and technological) during processing and storage. Conversely, they show negative health implications, so meat technology scientists are focusing on finding alternatives for these compounds. Terpenoid-rich extracts, including essential oils (EOs), are remarkable since they are generally marked as GRAS (generally recognized as safe) and have a wide ranging acceptance from consumers. EOs obtained by conventional or non-conventional methods possess different preservative potentials. Hence, the first goal of this review is to summarize the technical-technology characteristics of different procedures for terpenoid-rich extract recovery and their effects on the environment in order to obtain safe, highly valuable extracts for further application in the meat industry. Isolation and purification of terpenoids, as the main constituents of EOs, are essential due to their wide range of bioactivity and potential for utilization as natural food additives. Therefore, the second goal of this review is to summarize the antioxidant and antimicrobial potential of EOs and terpenoid-rich extracts obtained from different plant materials in meat and various meat products. The results of these investigations suggest that terpenoid-rich extracts, including EOs obtained from several spices and medicinal herbs (black pepper, caraway, Coreopsis tinctoria Nutt., coriander, garlic, oregano, sage, sweet basil, thyme, and winter savory) can be successfully used as natural antioxidants and antimicrobials in order to prolong the shelf-life of meat and processed meat products. These results could be encouraged for higher exploitation of EOs and terpenoid-rich extracts in the meat industry.

Introduction: This study compared phase-gated and amplitude-gated dose deliveries to the moving gross tumor volume (GTV) in lung stereotactic body radiation therapy (SBRT) using Gafchromic External Beam Therapy (EBT3) dosimetry film. Materials and Methods: Eighty treatment plans using two techniques (40 phase gated and 40 amplitude gated) were delivered using dynamic conformal arc therapy (DCAT). The GTV motion, breathing amplitude, and period were taken from 40 lung SBRT patients who performed regular breathing. These parameters were re-simulated using a modified Varian breathing mini phantom. The dosimetric accuracy of the phase- and amplitude-gated treatment plans was analyzed using Gafchromic EBT3 dosimetry film. The treatment delivery efficacy was analyzed for gantry rotation, number of monitor unit (MU), and target position per triggering window. The time required to deliver the phase- and amplitude-gated treatment techniques was also evaluated. Results: The mean dose (range) per fraction was 16.11 ± 0.91 Gy (13.04–17.50 Gy) versus 16.26 ± 0.83 Gy (13.82–17.99 Gy) (P < 0.0001) for phase- and amplitude-gated delivery. The greater difference in the gamma passing rate was 1.2% ±0.4% in the amplitude-gated compared to the phase gated. The gantry rotation per triggering time (tt) was 2° ±1° (1.2°–3°) versus 5° ±1° (3°–6°) (P < 0.0001) and MU per tt was 10 ± 3 MU (6–13 MU) versus 24 ± 7 MU (12–32 MU) (P < 0.0001), for phase- versus amplitude-gated techniques. A 90 beam interruption in the phase-gated technique impacted the treatment delivery efficacy, increasing the treatment delivery time in the phase gated for 1664 ± 202 s 1353–1942 s) compared to 36 interruptions in the amplitude gated 823 ± 79 s (712–926 s) (P < 0.0001). Conclusion: Amplitude-gated DCAT allows for better dosimetric accuracy over phase-gated treatment patients with regular breathing patterns.

The meat freezing, as a method of preservation, aims to maximize the storage period with preserving the quality and nutritional value of the product. However, freezing causes certain changes in the foodstuff. These changes are the result of ice formation and lead to a change in meat quality after thawing. The aim of this paper was to examine the effect of freezing rates on the physicochemical properties of pork meat (M. Longissimus dorsi). The meat samples were frozen at 10 different rates and after 24 hours of storage at -18°C, thawed at +4°C. Samples frozen at the lowest freezing rate (0.23 cm/h) had the lowest water content (72.02%), while for the samples frozen at the highest rate (1.43 cm/h), significantly higher (p

Introduction. Non-meat proteins are widely used in meat processing. In our study, we analyzed the effects of whey and soy protein isolates on the physicochemical and sensory properties of domestic fermented sausage. Study objects and methods. Five groups of sausages were traditionally fermented under industrial conditions. The sausage group without the additives was labelled the control, while other sausages were manufactured with the addition of 0.5% and 1.5% protein isolates of whey and soybean. Using a quantitative descriptive test, we assessed the sensory characteristics of the sausages and instrumentally determined their color, hardness, water activity (aw), and pH. Results and discussion. The proteins added to fermented sausages improved emulsification, texture, as well as water and fat binding capacity, which was confirmed by the results for hardness. Using a 0.5% soy protein isolate resulted in a firmer product. The additives had a minor effect on the color: the samples with the additives had a slightly lower L* value, and those with a soy protein had higher yellowness (b*). Conclusion. Using the additives did not have a significant effect on the chemical composition and overall sensory quality of all tested samples (P > 0.05).

Background/Aim. For patients with left-sided breast cancer, a major concern is the dose of radiation delivered to the heart, because of increased risk of exposure and consequently increased risk of major coronary events and side effects. In order to reduce the dose to the heart during breast irradiation, deep inspiration breath-hold (DIBH) technique was implemented in our institution. The aim of this retrospective study was to compare dosimetric parameters of DIBH on the heart, left anterior descending artery (LAD) and ipsilateral lung (IL), compared with free breathing (FB) technique. Methods. Twenty patients who underwent radiotherapy with DIBH at our institution were retrospectively analyzed. Two computed tomography (CT) scans were acquired for each patient, FB-CT and DIBH-CT. Plans consisted of two opposed tangential segmented beams and one direct beam with small dose contribution. Doses to the heart, LAD, and IL were assessed. Results. Dosimetric comparison between FB and DIBH for mean dose to the heart was 5.17 Gy vs. 3.68 Gy, respectively (p < 0.0001), and the mean percentage of the volume receiving 25 Gy was 4.63% vs. 0.85%, respectively (p < 0.0001). Mean dose for LAD was 26.09 Gy vs. 11.89 Gy, respectively (p = 0.00014). Mean percentage of the volume receiving 20 Gy for the IL was 15.16% vs. 13.26% (p = 0.0007) for FB and DIBH, respectively. Conclusion. Implementation of DIBH technique in radiotherapy treatment of patients with left-sided breast cancer statistically significantly reduces the dose delivered to the surrounding organs at risk, particularly to the heart and LAD, with optimal target coverage.

Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on β-blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile hydrothermal synthesis was used. The structural, morphological, and surface properties and purity of synthesized V2O5 powder were investigated by scanning electron microscopy (SEM), X-ray, and Raman spectroscopy. SEM micrographs showed hexagonal-shaped platelets with well-defined morphology of materials with diameters in the range of 10–65 µm and thickness of around a few microns. X-ray diffraction identified only one crystalline phase in the sample. The Raman scattering measurements taken on the catalyst confirmed the result of XRPD. Degradation kinetics were monitored by ultra-fast liquid chromatography with diode array detection. The results showed that in individual solutions, photocatalytic degradation of MET and NAD was relatively insignificant (

Titanium dioxide (TiO2), one of the most frequently used materials in general, has emerged as an excellent photocatalytic material for environmental applications. In this review, principles and mechanisms of the photocatalytic activity of TiO2 have been analyzed. Structural and physical specificities of TiO2 nanoparticles, such as morphology, crystal structure, and electronic and optical properties, have been considered in the context of photocatalytic applications. A review of the influence of several factors, such as the type and dimensions of photocatalyst particles, pH of the solution, the influence of oxidants/electron acceptors, and light intensity on photocatalytic properties of TiO2, has been provided. Superhydrophilicity as an intrinsic property of the TiO2 surface was discussed through surface reconstruction on TiO2 during the reversible hydrophilic changes. Additionally, attention was paid to improving the photocatalytic properties of TiO2 particles through aggregation and agglomeration.

Water pollution is a significant issue nowadays. Among the many different technologies for water purification, photocatalysis is a very promising and environment-friendly approach. In this study, the photocatalytic activity of Sr0.9La0.1TiO3 (SLTO) and Sr0.25Ca0.25Na0.25Pr0.25TiO3 (SCNPTO) nano-sized powders were evaluated by degradation of pindolol in water. Pindolol is almost entirely insoluble in water due to its lipophilic properties. The synthesis of the SCNPTO was performed using the reverse co-precipitation method using nitrate precursors, whereas the SLTO was produced by spray pyrolysis (CerPoTech, Trondheim Norway). The phase purity of the synthesized powders was validated by XRD, while HR-SEM revealed particle sizes between 50 and 70 nm. The obtained SLTO and SCNPTO powders were agglomerated but had relatively similar specific surface areas of about 27.6 m2 g−1 and 34.0 m2 g−1, respectively. The energy band gaps of the SCNPTO and SLTO were calculated (DFT) to be about 2.69 eV and 3.05 eV, respectively. The photocatalytic performances of the materials were examined by removing the pindolol from the polluted water under simulated solar irradiation (SSI), UV-LED irradiation, and UV irradiation. Ultra-fast liquid chromatography was used to monitor the kinetics of the pindolol degradation with diode array detection (UFLC–DAD). The SLTO removed 68%, 94%, and 100% of the pindolol after 240 min under SSI, UV-LED, and UV irradiation, respectively. A similar but slightly lower photocatalytic activity was obtained with the SCNPTO under identical conditions, resulting in 65%, 84%, and 93% degradation of the pindolol, respectively. Chemical oxygen demand measurements showed high mineralization of the investigated mixtures under UV-LED and UV irradiation.

This study investigated the potential of zeolites (NH4BETA, NH4ZSM-5, and NaY) to remove two frequently used dyes, methylene blue (MB) and rhodamine B (RB), from an aqueous environment. The removal of dyes with zeolites was performed via two mechanisms: adsorption and photocatalysis. Removal of dyes through adsorption was achieved by studying the Freundlich adsorption isotherms, while photocatalytic removal of dyes was performed under UV irradiation. In both cases, the removal experiments were conducted for 180 min at two temperatures (283 K and 293 K), and dye concentrations were determined spectrophotometrically. Additionally, after photodegradation, mineralization was analyzed as chemical oxygen demand. A computational analysis of the structures of MB and RB was performed to gain a deeper understanding of the obtained results. The computational analysis encompassed density functional theory (DFT) calculations and analysis of two quantum-molecular descriptors addressing the local reactivity of molecules. Experimental results have indicated that the considered zeolites effectively remove both dyes through both mechanisms, especially NH4BETA and NH4ZSM-5, due to the presence of active acidic centers on the outer and inner surfaces of the zeolite. The lowest efficiency of dye removal was achieved in the presence of NaY zeolite, which has a lower SiO2/Al2O3 ratio. A more efficient reduction was completed for RB dye, which agrees with the computationally obtained information about reactivity.

The paper analyses the effect of cooling/heating rate of chicken meat (Pectoralis major) on the crystallization temperature (Tcon, Tc, Tcend), melting temperature (Tmon, Tm, Tmend), crystallization enthalpy (ΔHc) and melting enthalpy (ΔHm). Chicken meat samples were scanned by differential scanning calorimetry (DSC) at five rates (2, 5, 10, 15, 20 °C/min), from 20 °C to -40 °C, and then from -40 °C to 20 °C.The results of the statistical analysis show that the fastest cooling rate (20 °C/min) significantly (p

Myofibrillar and sarcoplasmic proteins were extracted from pork meat (M. Longissimus dorsi) and then separated by capillary gel electrophoresis (CGE). Migration time and peak areas of individual protein molecules in the electropherogram were analysed. The electropherograms obtained after the separation of myofibrillar proteins contained 53 well-separated peaks, of which the following were identified: thymosin, myosin light chain-3 (MLC-3), myosin light chain-2 (MLC-2), troponin C, troponin I, myosin light chain-1 (MLC-1), tropomyosin 1, tropomyosin 2, troponin T, actin, desmin, troponin, C protein, and myosin heavy chain (MHC). The relative concentration of the identified myofibrillar proteins was 74.5%. Of the 56 separated sarcoplasmic proteins the following were identified: myoglobin, myokinase, triosephosphate isomerase, phosphoglycerate mutase, lactate dehydrogenase, glyceraldehyde phosphate dehydrogenase, aldolase, creatine kinase, enolase, phosphoglucose isomerase, pyruvate kinase, phosphoglucomutase, and phosphorylase b. The relative concentration of the identified sarcoplasmic proteins was 83.6% of all sarcoplasmic proteins extracted from the pork meat.

In this paper, we obtain the results of coincidence and common fixed points in b-metric spaces. We work with a new type of multivalued quasi-contractive mapping with nonlinear comparison functions. Our results generalize and improve several recent results. Additionally, we give an application of the obtained results to dynamical systems.

Introduction: Gated tangential field-in-field (FIF) technique is used to lower the dose to organs at risk for breast cancer radiotherapy (RT). In this study, the authors investigated the accuracy of the delivered treatment plan with and without gating using a two-dimensional detector array for patient-specific verification purposes. Methods: In this study, a 6MV beams were used for the merged FIF RT (forward Intensity Modulated Radiation Therapy). The respiration signals for gated FIF delivery were obtained from the one-dimensional moving phantom using the real-time position management (RPM) system (Varian Medical Systems, Palo Alto, CA). RPM system used for four-dimensional computed tomography scanner light-speed, GE is based on an infrared camera to detect motion of external 6-point marker. The beams were delivered using a Clinac iX (Varian Medical Systems, Palo Alto, CA) with the multileaf collimator Millennium 120. The MapCheck2 (SunNuclear, Florida) was used for the evaluation of treatment plans. MapCheck2 was validated through a comparison with measurements from a farmer-type ion chamber. Gated beams were delivered using a maximum dose rate with varying duty cycles and analyzed the MapCheck2 data to evaluate treatment plan delivery accuracy. Results: Results of the gamma passing rate for relative and absolute dose differences for all ungated and gated beams were between 95.1% and 100%. Conclusion: Gated FIF technique can deliver an accurate dose to a detector during gated breast cancer RT. There is no significance between gated and ungated patient-specific quality assurance (PSQA); one can use ungated PSQA for verification of treatment plan delivery

Apple pomace, a by-product that remains after extraction of juice from fruit, is a good source of dietary fibre, minerals and different phytochemicals such as phenolic acids. Although the valorization of apple pomace as a bakery ingredient was performed by several authors, there is a lack of information on attempts of incorporation of apple by-products in the form of coextrudates with corn grits (CAPCG). In this study, sponge cakes were created with apple pomace coextruded with corn grits in the ratio of 45:55 by partial replacing wheat flour with coextrudate in the formulation at 10%, 20% and 30% level. With the increase in the proportion of coextruded particles, the farinographic characteristics of dough samples showed an increase in water absorption and dough development time due to larger particles of coextrudates, and loss of dough elasticity. Consequently, the cake specific volume decreased over the range between 3.6 - 14.2%, but only the substitution level of 30% yielded an increase in cake firmness after 1 h of cooling and after 24 h of storage. The estimation of sponge cake sensory properties using the hedonic scale from 1 to 9 showed that the most acceptable texture was found in the control sample, whereas all sponge cakes with CAPCG had significantly higher acceptance of odour and taste in comparison to the control cake. From the nutritional point of view, sponge cakes substituted with CAPCG showed higher total dietary fibre content than the control wheat sponge cake.

The objective of this study was to evaluate the potential of pumpkin oil cake protein isolate in production of millet bread. For that purpose, breads were created by substitution of millet flour with proteins at 5, 10 and 15% level. Dough rheological properties and both physical and sensory characteristics of obtained bread were determined. The increase in pumpkin oilseed cake protein (POCP) concentration influenced increase in dough viscosity, as determined using farinograph and fundamental rheological measurements. This is additionally confirmed by lower elasticity of supplemented breads as determined by texture analysis and sensory panel. Substitution of millet flour with POCP at all tested levels did not exhibit any influence on bread specific volume. However, 24 h after baking, breads supplemented with higher amount of POCP showed less pronounced hardening of the crumb, indicating that these proteins might retard starch retrogradation. The supplementation of millet bread with POCP had several beneficial effects on the sensory quality of bread, such as loss of bitter taste and aftertaste originating from millet flour. Additionally, bread granularity decreased and bread dissolving speed in mouth increased along with the increase in POCP concentration.

The antioxidant and antimicrobial activity of Juniperus communis L. essential oil (JO) in cooked sausages was examined. Sausages with different concentrations of JO (0.15.0 µl/g) and a control were prepared. Instrumental parameters of colour (CIE L*a*b*), TBARS values, DPPH scavenging activity assay, microbial profile, and sensory panel scores have been assessed. Batches produced with the JO addition were darker and redder compared to the control. Sausages with the addition of 1.0, 2.0 and 5.0 µl/g JO showed the significantly (P < 0.05) lower TBARS values compared to the control. The addition of JO decreased radical formation and reduced the growth of total aerobic mesophilic bacteria. The flavour of sausages produced with the addition of 0.1 and 0.5 µl/g JO was slightly/moderately and significantly (P < 0.05) different from the control. This study demonstrates the significant antioxidant and antimicrobial activity of Juniperus communis L. essential oil, as well as the potential of its utilisation in the production of cooked pork sausages to enhance quality.

The aim of this study was to test the influence of scanning rate and meat type on the thermo-physical properties of meat and content of the freezable water in frozen meat, using differential scanning calorimetry (DSC). In this study, three types of meat were investigated: beef (M. Longissimus dorsi), pork (M. Longissimus dorsi), and chicken meat (Pectoralis major). The cooling rate affected the onset (Tcon), peak (Tc) and end (Tcend) temperatures of crystallization process of beef meat (p < 0.05). Decreasing cooling rate from 20 to 2°C/min resulted in significant (p < 0.05) change of the crystallization enthalpy (ΔHc) of beef meat, from -220.17 to -168.20 J/g, respectively. Reduction of the heating rate caused significant (p < 0.05) decrease in enthalpy of melting (ΔHm) for beef meat, from 228.87 to 161.13 J/g. The heating rate affected the peak (Tm) and end temperatures (Tmend) of melting process of beef meat (p < 0.05). The type of meat did not have effect on ΔHc and ΔHm as well as temperature of crystallization (Tcon, Tc and Tcend) and temperature of melting (Tm and Tmend) in meat. Significant (p < 0.05) change in freezable water content were recorded between heating rate 20 °C/min and other heating rates, for all three meat types.

In this paper we present a proposed multi-layered image format for use on the web. The format implements an algorithm for selecting adequate layer images depending on the image container's surroundings and size. The layer selection depends on the weighted average brightness of the underlying web page background within the bounds of the image. The proposed image format supports multiple image layers with adjoined thresholds and activation conditions. Depending on these conditions and the underlying background, a layer's visibility will be adequately set. The selection algorithm takes into account the background brightness, each layer's adjoined threshold values, and other newly introduced layer conditions.

This paper presents a method of optimization of the underground network for the construction of the Belgrade metro. In the process of optimization, the method of preanalysis was used. The theoretical basis of the mathematical model of the preanalysis is given, which is based on Gauß-Markov model of geodetic networks adjustment, as well as the theoretical basis for calculating the tunnel breakthrough precision. Based on the construction standards, the calculation of the required breakthrough precision was made, as the fundamental criterion of precision for the development of the underground tunnel network. Depending on the technical parameters of the Belgrade Metro Line 1 alignment, related to the position of the axis and the longitudinal profile of the tunnel, the design of the underground tunnel network was defined. In the process of optimization, different plans of observations were analyzed, as well as the results obtained from the preanalysis for each plan individually. Based on the set criterion of maximum transverse error of the tunnel breakthrough, which is 4.5 cm, the third plan of observations was adopted as the final plan, by which the breakthrough error of 3.5 cm was achieved. The adopted plan of observations includes planned measurements of horizontal directions, azimuths, and distances, with the assumed standard deviation of 1" for horizontal directions, 3.2 " for azimuths, and (1 mm; 1 ppm) for distances.

The effect of Juniperus communis L. essential oil (JEO) addition at concentrations of 0.01, 0.05 and 0.10 µL/g on pH, instrumental parameters of color, lipid oxidation (2-Thiobarbituric acid reactive substances (TBARS)), microbial growth, texture and sensory attributes of dry fermented sausages produced with different levels of fat (15 and 25%) and sodium nitrite (0, 75 and 150 mg/kg) was assessed. Reduced level of sodium nitrite (75 mg/kg) in combination with all three concentrations of JEO (0.01–0.10 µL/g) resulted in satisfying physico-chemical (color and texture) properties and improved oxidative stability (TBARS < 0.3 mg MDA/kg) of dry fermented sausages produced with 25% of fat. However, sausages produced with 0.10 µL/g of JEO had untypical flavor. No foodborne pathogens (Escherichia coli, Listeria monocytogenes, Salmonella spp. and sulfite-reducing clostridia) were detected in any sample throughout the storage period (225 days). The results of this study revealed significant antioxidative activity of JEO and consequently its high potential as effective partial replacement for sodium nitrite in dry fermented sausages.

Relationship between epistemological beliefs and motivational orientation of high school students was studied and their relationship with school majoring, GPA and gender. To estimate epistemological beliefs and motivational orientation Schommer’s Epistemological Questionnaire (EQ) and Work Preference Inventory (WPI) were used. Through factor analysis of EQ 5 factors were extracted, that differ from those Schommer singled out. Negative correlation between naive epistemological beliefs on one side, and intrinsic (-0.327, p

The impact of forced social comparison on adolescents’ self-esteem and appearance satisfaction research, conducted on a sample of 133 high school seniors, consisted of two phases. In phase one, participants were given the Rosenberg Self-Esteem Inventory, Appearance Satisfaction Scale and Appearance Relevance Scale, and in phase two, one month later, they were exposed to photographs of attractive and unattractive individuals. Two groups of boys and girls each assessed attractive or unattractive individuals of their own gender, while two control groups (of both genders) were not exposed to any photographs. Immediately after assessing the photographs, the participants were again given the Rosenberg Self-Esteem Inventory and Appearance Satisfaction Scale. We found that forced social comparison had an impact on self-esteem and a marginally significant effect on appearance satisfaction in the group of participants (of both genders) assessing the photographs of unattractive individuals, while no effects were found in the either the control group or the group assessing the photographs of attractive individuals. We also examined the impact of self-esteem, appearance satisfaction and appearance relevance as moderating variables on the effect size of social comparison and showed that higher pretest self-esteem and appearance relevance and lower appearance satisfaction predict higher posttest self-esteem scores, regardless of the participants’ group membership. The group of participants exposed to photographs of unattractive people, however, showed the opposite pattern - those participants who had initially lower self-esteem have increased it more as a result of the experimental exposure.

U raduje predstavljeno softversko rešenje za praćenje merne opreme i podršku metrološkom obezbeđenju u Tehničkom opitnom centru Vojske SCG. Softver omogućava unos i čuvanje svih relevantnih podataka o merilima, brzu izradu svih zahtevanih izveštaja različitih vrsta i planova verifikacije i opravke kao i uvid u istoriju održavanja. Softversko rešenje obuhvata bazu podataka projektovanu na platformi 'Paradox' i softver za rad nad bazom podataka izrađen u programskom okruženju 'Delphi'. / This paper presents a test equipment monitoring software solution for metrological support in the Technical proving center of the Army of Serbia and Montenegro. The software provides input and saving of all relevant data concerning measuring instruments, quick generation of different kinds of required reports and verification and maintenance plans as wall as maintenance history. The software includes a database designed on the 'Paradox' platform and software procedures for data processing coded on the 'Delphi' software platform.

Background: Balance training of patients after stroke is one of the primary tasks of physiotherapy after the hospitalization. It is based on the intensive training, which consists of simple, repetitive, goal-based tasks. The tasks are carried out by physiotherapists, who follow predefined protocols. Introduction of a standing frame and a virtual reality decrease the physical load and number of required physiotherapists. The patients benefit in terms of safety and increased motivation. Additional feedback – haptic floor can enhance the virtual reality experience, add additional level of difficulty and could be also used for generating postural perturbations. The purpose of this article is to examine whether haptic information can be used to identify specific anomalies in dynamic posturography.Methods: The performance and stability of closed-loop system of the haptic floor were tested using frequency analysis. A postural response normative was set up from data assessed in four healthy individuals who were exposed to unexpected movements of the haptic floor in eight directions. Postural responses of a patient after stroke participating in virtual reality supported balance training, where collisions resulted in floor movements, were assessed and contrasted to the normative.Results: Haptic floor system was stable and controllable up to the frequency of 1.1 Hz, sufficient for the generation of postural perturbations. Responses obtained after perturbations in two major directions for a patient after stroke demonstrated noticeable deviations from the normative.Conclusions: Haptic floor design, together with a standing frame and a virtual reality used for balance training, enables an assessment of directionally specific postural responses. The system was designed to identify postural disorders during balance training and rehabilitation progress outside specialized clinics, e.g. at patient’s home.

Od 1971. godine sistem za globalno pozicioniranje, postao je nezaobilazno sredstvo u domenu pozicioniranja i navigacije. Međutim, malo ko je očekivao da će tako brzo, za manje od 10 godina, pretrpeti toliku minijaturizaciju, usavršavanje i kombinovanje sa drugim sistemima, i u tolikoj meri proširiti svoje područje primene da se danas iole složeniji tehnički vojni sistem teško može zamisliti bez nekog od oblika ovog sistema. Gotovo sva precizna oružja većeg dometa imaju ga u svom sastavu ili će ga ubrzo dobiti. Sistemi za vođenje i upravljanje raketa i artiljerijskih projektila visoke preciznosti i velikog dometa i sistemi za upravljanje vatrom postali su oblasti u kojima se GPS potpuno odomaćio, naročito u kombinaciji sa inercijalnim sistemima koji su do skoro bili nezamenjivi. Značajno mesto u skoroj budućnosti GPS će dobiti i u oblasti softvera za upravljanje borbenim operacijama različitih nivoa (od nivoa čete do nivoa brigade), koji će biti instalirani na robusnim prenosnim kompjuterima na čijem razvoju zapadne zemlje intenzivno rade. Planirane promene frekvencije signala nosilaca, radi striktnog odvajanja vojne komponente od civilne i promene u strukturi koda, koje će omogućiti prenos većeg broja informacija, još više će proširiti primenu i ubrzati razvoj obe komponente. U razvoj softvera, prijemnika i komponenata sistema vođenja već su uključene i manje firme, što će razvoju različitih sistema na osnovu GPS dati još veći zamah. U toj oblasti nije nebitno ostvariti tehnološki priključak, što kod nas do sada nije učinjeno iz vise razloga. Nabavkom određenog broja GPS prijemnika i angažovanjem UA Sektora KoV i VGI načinjeni su prvi koraci.

Uprkos znatno većem finansijskom i materijalnom potencijalu, sveobuhvatnim nastojanjima da u razvoju što savremenijih raketa vazduh-vazduh uhvate ritam i ostvare prestiž na ovom polju, Rusija još uvek diktira tempo. Objašnjenje za takvo stanje može se naći u orijentaciji Sovjetskog Saveza na vrlo temeljnim bazičnim istraživanjima, naučnom kapitalu i kadrovima koji su ostali nakon njegovog raspada. Međutim, razlika se sve brže smanjuje zahvaljujući, pre svega, ogromnom slobodnom kapitalu koji se ulaže u projekte koji donose najveću dobit.

Bespilotne letelice predstavljaju još jedan korak u 'tehnologizaciji' rata I integraciji ratišta za koje je karakteristično sve manje učešće čoveka u izvršavanju zadataka koji ga mogu dovesti u neposrednu opasnost. Da bi se stekla prednost u odnosu na neprijatelja, potrebno je prikupiti što više podataka o njemu, i u realnom vremenu ih proslediti komandnim centrima, kako bi se realizovao koncept borbe s distance i na taj način maksimalno zaštitio sopstveni vojnik na čiji su gubitak javnosti svih zapadnih zemalja vrlo osetljive. Uprkos izvesnim budžetskim ograničenjima, razvoj BL se intenzivira, tim pre što u njemu učestvuju i specijalizovane obaveštajne agencije, kao što je CIA sa novčanim sredstvima iz svojih budžeta. Ipak, radi smanjenja ukupnih troškova, najnoviji trendovi usmereni su na razvoj univerzalnih BL sa zamenljivom opremom i senzorima koji se kompletiraju u zavisnosti od postavljenog zadatka. U pogledu aerodinamičke konstrukcije ide se ka konfiguracijama sa što boljim aerodinamičkim iskorišćenjem kod kojih je već danas ostvaren odnos mase korisnog tereta i poletne mase 1:3.

Razvoj komandno-informacionih sistema izuzetno je složen i obiman posao. Posebno je složen razvoj komandno-informacionih sistema PVO zbog činjenice da ovaj vid borbe mora da objedini i koordinira rad velikog broja jedinica iz sva tri vida vojske, uveže veliki broj tehnički najsloženijih sredstava, kao što su: radari, rakete, avioni, brodovi, artiljerijska oruđa, komunikaciona sredstva, računari, itd. koji su razmešteni na velikoj teritoriji. Pri tome, posebno je izražen zahtev za vrlo brzu (u realnom vremenu) i praktično nepogrešivu razmenu velikog broja podataka čija je realizacija nezamisliva bez dobro postavljenog i kvalitetno izvedenog globalnog sistema komunikacija. Da bi se rešavanje problema PVO moglo na zadovoljavajući način opisati algoritmima, potreban je precizan i jednoznačan opis svih entiteta preko unapred definisanih parametara i atributa. Da bi broj ovih parametara bio što manji i obrada što lakša, neophodna je sveobuhvatna unifikacija sastava i formacija jedinica, kao i svih tehničkih sredstava i potpuna standardizacija postupaka. Potpuna jednoznačnost u nadležnostima, donošenju odluka i komandovanju takođe je neizostavan uslov za potpunu formalizaciju procesa koji se odvijaju u komandovanju jedinicama i upravljanju sredstvima PVO. Razvoj komandno-informacionih sistema je suviše složen i obiman da bi se mogao odvijati parcijalno i u malim timovima, jer postoji opasnost od zanemarivanja nekih aspekata problema ili predugog vremena razvoja, što može dovesti do zastarelosti sistema pre nego što bude uveden u operativnu upotrebu. Kupovina, razvoj ili usavršavanje odgovarajućeg komandno-informacionog sistema PVO imperativ je izgradnje pouzdanog sistema odbrane, pri čemu mora da se vodi računa i o kompatibilnosti sistema PVO sa potencijalnim saveznicima.

In the article are analysed Army anti-armour and antiaircraft guided rockets and the correlation between the age of rockets, conditions for their storage, and the number of registered malfunctioning rockets is established. Also the impact of the inbuilt elements to the overall reliability of rockets is considered. Results have shown that the age structure of the rockets is not favourable, that the procedures of their testing are not adequate and comprehensive, and that the verification testing of rockets is necessary.

The author reviews problems pertaining the procurement of spare parts for the Yugoslav Army in conditions of the commercial embargo and irregular situation in the market. Presented are the structure of sources for procurement of spare parts for the maintenance of different items of material of the Yugoslav Army, and the range of its requirements in spare parts. Analysed are the current state of affairs concerning the input control of quality of spare parts, and possibilities of effecting this control in conditions where the Yugoslav Army is forced to procure spare parts from a variety of sources. Solutions which could make possible a more substantial input control of quality of spare parts in such conditions are offered.

U radu su date osnovne teorijske postavke sistema snabdevanja rezervnim delovima, pregled parametara, ograničenja i kriterijuma za ocenjivanje ovakvih organizacijskih sistema. Kroz kratku analizu sistema, uz pregled postojećih i kratak prikaz jednog novog modela za proračun r/d, sistematizovani su osnovni nedostaci u postavci i funkcionisanju sadašnjeg sistema snabdevanja r/d.