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Search Results: 1 - 10 of 263626 matches for " Jeli?i? Zoran D. "
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Discrete particle swarm optimization algorithm for solving optimal sensor deployment problem
Rapai? Milan R.,Kanovi? ?eljko,JeliiZoran D.
Journal of Automatic Control , 2008, DOI: 10.2298/jac0801009r
Abstract: This paper addresses the Optimal Sensor Deployment Problem (OSDP). The goal is to maximize the probability of target detection, with simultaneous cost minimization. The problem is solved by the Discrete PSO (DPSO) algorithm, a novel modification of the PSO algorithm, originally presented in the current paper. DPSO is general-purpose optimizer well suited for conducting search within a discrete search space. Its applicability is not limited to OSDP, it can be used to solve any combinatorial and integer programming problem. The effectiveness of the DPSO in solving OSDP was demonstrated on several examples.
Chemotherapy by M-VAC protocol in progressive bladder carcinoma treatment
Jani?i? A.,Tuli? C.,Rado?evi?-Jeli? Lj.,D?ami? Z.
Acta Chirurgica Iugoslavica , 2007, DOI: 10.2298/aci0704097j
Abstract: Treatment of invasive bladder carcinoma is complex therapy procedure which means surgical and non-surgical treatment appliance. In spite of radical surgical treatment conduction, the gold standard in invasive bladder tumor therapy, about 30- 40% patients spread metastasis in further disease course. The system chemotherapy in invasive bladder tumors treatments is marked with accent. Its fundamental aim is to correct results of surgical treatment. This therapy option very often means the only modality in bladder carcinoma treatment, for instance, in the diseminal disease faze. The adjuvant chemotherapy imposes a task to correct surgical treatments results in case where the high risk of recidive breaking out exists. As risks for recidive breaking out cite are: a) lymphatic and vascular invasion into the primary tumor; b) extravezical tumor extension-T3b; c) tumor invasion neighboring structures-T4; d) positive lgl findings- N+. After radical cystectomy caused by high level malignancy tumors - T3b,T4, is founded frequency of positive lgl of about 40-60%. Patients with positive lgl have badly prognosis. Only 17% they survive longer than two years, and 7% have surviving of five years.
Implementation of HACCP system in production of UHT milk
Irena Jelii
Mljekarstvo , 2009,
Abstract: Regulation of the Croatian Food Law (NN 46/07) which demands implementation of food safety management system based on HACCP principles became mandatory at the January 01st 2009. According to that regulation all subjects in food production and retail sector including the dairy industry too are obligant to implement HACCP system in their production processes. In the process of HACCP implementation many problems occur which result in delaying the implementation, scarce performance of assigned monitoring actions and inadequate maintenance and improvement of the system. All of the latter mentioned problems disable proactive functioning and may lead to disturbance of food safety of the end product. The aim of this paper is to demonstrate the interpretation of each steps that have to be taken in the process of implementation of HACCP system in the production of UHT milk. Thereby many practical informations and examples have been gathered while reviewing the HACCP system in KIM d.d. Dairy industry, Karlovac, Croatia. This paper contains the examples of all indentified hazards, all assigned control actions, hazard analysis and critical control point determination for the process of UHT milk production in KIM d.d. Dairy industry, Karlovac. Furthermore, also examples and ideas for the traceability, verification and validation, product recall and withdrawal procedures are given.
Possibilities of implementing nonthermal processing methods in the dairy industry
Irena Jelii
Mljekarstvo , 2010,
Abstract: In the past two decades a lot of research in the field of food science has focused on new, non-thermal processing methods. This article describes the most intensively investigated new processing methodsfor implementation in the dairy industry, like microfiltration, high hydrostatic pressure, ultrasound and pulsed electric fields. For each method an overview is given for the principle of microbial inactivation, the obtained results regarding reduction of microorganisms as well as the positive and undesirable effects on milk composition and characteristics. Most promising methods for further implementation in the dairy industry appeared to be combination of moderate temperatures with high hydrostatic pressure, respectively, pulsed electric fields and microfiltration, since those treatments did not result in any undesirable changes in sensory properties of milk. Additionally, milk treatment with these methodsresulted in a better milk fat homogenization, faster rennet coagulation, shorter duration of milk fermentations, etc. Very good results regarding microbial inactivation were obtained by treating milkwith combination of moderate temperatures and high intensity ultrasound which is also called a process of thermosonification. However, thermosonification treatments often result in undesirablechanges in milk sensory properties, which is most probably due to ultrasonic induced milk fat oxidation. This article also shortly describes the use of natural compounds with antimicrobial effects such as bacteriocins, lactoperoxidase system and lysozime. However their implementation is limited for reasons like high costs, interaction with other food ingredients, poor solubility, narrow activity spectrum, spontaneous loss of bacteriocinogenicity, etc. In addition, principles of antimicrobial effect of microwaves and ultraviolet irradiation are described. However their implementation in the dairy industry failed mostly due to technical and commercial reasons.
Vesicovaginal fistulas: Results of surgical treatment during ten years
Radovanovi? Milan,D?ami? Zoran,Vuksanovi? Aleksandar,Pej?i? Tomislav
Srpski Arhiv za Celokupno Lekarstvo , 2012, DOI: 10.2298/sarh1212756r
Abstract: Introduction. Vesicovaginal fistulas (VVF) are the most common and the most frequent type of urogenital fistulas. They may have a different etiology. In most cases, surgery is required for treatment. Objective. The aim of the study was to analyze the results of surgical therapy of VVF in a tertiary level institution over the last decade. Methods. The retrospective study of results was conducted involving a total number of 99 women who were surgically treated for VVF at the Clinic of Urology of the Clinical Center of Serbia in Belgrade in the period from 2001–2010. Results. Over the past ten years VVF occurred after hysterectomy in 74.7% of cases, and almost twice more frequently after hysterectomy for a benign gynecological disease. In the surgical treatment of primary VVF transvesical approach was used in 53.53% (52/99) of cases. Relapses were treated surgically using transperitoneal approach in all cases. No significant difference was found in respect to the applied approach in the surgical treatment of primary fistulas. In even 94% (93/99) of cases the problem of VVF was solved by a single surgical intervention only. In total, in 107 interventions 8 (7.4%) relapses were recorded. Conclusion. The study showed that VVF occurred after hysterectomy in three quarters of cases, more frequently after hysterectomy due to a benign gynecological disease. Early detection with timely and appropriate treatment of gynecological diseases will reduce the number of conditions that may lead to VVF. Surgical treatment of VVF yielded satisfactory results; it was shown that even in 94% of cases the problem of VVF was solved by a single surgical intervention only, however further improvement is certainly necessary.
Continent appendicostomy in the treatment of fecal incontinence
Luka? Marija,Krsti? Zoran D.,Sin?i? S.,Perovi? S.
Acta Chirurgica Iugoslavica , 2004, DOI: 10.2298/aci0402139l
Abstract: Background: Fecal incontinence is common in children with anorectal anomalies or spina bifida. If it is possible to achieve fecal control, patients are given a large volume of enema once a day. Retrograde enemas are often unpleasant in children, particularly in adolescents. Malone procedure of antegrade appendicostomy achieves antegrade colonic irrigation. Material and Methods: From 1996 to 2003 Malone antegrade appendicostomy was performed in 10 patients with fecal incontinence. The patients were aged from 5 to 24 years. In 4 patients fecal incontinence was due to an anorectal anomaly, and in 6 patients spina bifida. Preoperatively, all patients were given a clysma to control fecal incontinence. The patients, who remained clean with regular usage of the clysma for 24 hours or longer, fulfilled the criterion for the formation of continent appendicostomy. In 9 patients the cecal appendix was used to create a stoma, while in another one a lateral tubularized cecal flap was applied. In 3 patients a continent conduit was also done due to urinary incontinence. The follow-up period was from 1 to 8 years. A patient was reoperated due to stenosis of the stomal aperture, while another one has not been using the stoma because of social reasons. Conclusion: Continent appendicostomy is a simple surgery, which is effective in the control of fecal incontinence in most children. It is indicated only in patients in whom the rerograde clysma successfully cleans the colon and if patient and parents are motivated to use it. Possible complications, among which stenosis is the most frequent, can be solved with a reoperation.
Occurence of Anguillicola crassus, ematoda: Dracunculoidea, in eels of lake Ohrid, Macedonia
Caki? Predrag D.,Stojanovski S.,Kuli?iZoran,Hristovski N
Acta Veterinaria , 2002, DOI: 10.2298/avb0203163c
Abstract: The first record of the eel parasite Anguillicola crassus Kuwahara (Niimietltagaki, 1974) from Lake Ohrid and the Republic of Macedonia is reported here. Parasitological examinations comprised 68 specimens of the eel Anguilla anguilla Linnaeus, 1758 of which 39.71% were infected with Anguillicola crassus. The prevalence varied depending on the season, with the highest value occuring during the autumn (47.06%). Average intensity of infection was 10.33. Anguillicola crassus was probably introduced into the lake by the artificial stocking with eel young, imported from abroad. It has found convenient conditions for development and multiplication in the lake due to the presence of transitional and paratenic hosts.
The level of microbial contamination and frequency of surgical site infections at the Department of Orthopedic and Traumatologic Surgery of the Clinical Hospital Center in Kragujevac
Grujovi? Zoran,Ili? Milena D.,Mili?i? Biljana
Medicinski Pregled , 2005, DOI: 10.2298/mpns0506287g
Abstract: Introduction. The level of microbial contamination is an important risk factor for surgical site infections. The aim of this study was to investigate the frequency of surgical site infections in regard to the level of microbial contamination at the Department of Orthopedic and Traumatologic Surgery of the Clinical Hospital Center in Kragujevac. Material and methods. This study included 474 patients who underwent surgery in the period from January 1, 2002 to December 31, 2002 at the Department of Orthopedic and Traumatologic Surgery of the Clinical Hospital Center in Kragujevac. Hospital infections were identified using CDC definitions, modified to fit our circumstances. The traditional classification of surgical sites in regard to the level of microbial contamination includes three categories: clean, contaminated and dirty. Results The incidence of surgical site infections was higher at the Orthopedic Surgery Ward (5.94%) compared to Traumatologic Surgery Ward (5.02%). Additionally, a significantly higher frequency of deep surgical site infections, which were classified as clean were established at the Orthopedic Surgery Ward, in regard to the level of microbial contamination, whereas the greatest frequency of surface infections in clean surgical sites (p=0.000) were established at the Traumatologic Surgery Ward. Surgical site infections were more frequent in patients undergoing multiple surgeries at the Orthopedic Surgery Ward than in those treated at the Traumatologic Surgery Ward (p=0.037). Conclusion It is of utmost importance to estimate the frequency of surgical site infections and identify associated risk factors in order to undertake adequate measures for their prevention and control. .
The effect of prestimulation on milking characteristics during machine milking of goat
Zoran Ba?i,Alen D?idi?,Antun Kosteli?
Mljekarstvo , 2009,
Abstract: Goat milking is optimal if maximum milk yield is obtained in the minimum time frame. Prestimulation influences milk yield and other milking characteristics. The aim of this study was to determine optimal milking characteristics for different times spent on prestimulation during machine milking of goats. Prestimulation of 30 s was optimal to achieve maximum milk yield and flow in the shortest time. Longer milking interval resulted in higher milk yield, milk flow, but also in the longest milking time. Milking goats in 4th parity had higher average and peak flow rate, while goats in third parity had longer milking time, with higher milk yield. The results of this study show that prestimulation time longer than 30 s is not necessary to obtain optimum milking characteristics during machine milking of goats.
Reference values of capillary blood saturation in neonates and its difference from pulse oximetry
Je?i? Milo? M.,Je?i? Maja D.,Krstaji? Tamara D.,Vujnovi? Zoran M.
Srpski Arhiv za Celokupno Lekarstvo , 2010, DOI: 10.2298/sarh1006297j
Abstract: Introduction Haemoglobin saturation is an obligatory oxygen parameter in the assessment of neonatal oxygenation. Although, pulse oximetry is currently one of the major methods in the determination of haemoglobin saturation, capillary blood saturation is still present in the diagnostic process. As well known, haemoglobin saturation value of capillary blood is insufficiently accurate, but not as much as the difference in relation to the values determined by pulse oximetry. Until now published studies have reported that capillary samples are obtained according to a protocol by the principle of free blood outflow, which is practically almost unachievable in the neonate. Objective Determination of the reference values of oxygen saturation (ScO2) and partial pressure (pcO2) of capillary blood by squeezing of the foot. The determination of difference between ScO2 and pulse oximetry (SpO2). Methods In 134 term newborns, we determined SpO2 . Subsequently, we measured the values of ScO2 and pcO2 from the same extremity. While withdrawing a capillary sample, we exerted multiple squeezing of the foot. The mean value of ScO2, pcO2, SpO2 and the difference between ScO2 and SpO2 were determined. Results Mean ScO2 value was 80.5 }8.5%, pcO2 was 48.2 }11.4 mm Hg and SpO2 was 98 }1.9%. The difference between ScO2 and SpO2 values was 17.5 }8.6% (t=23.568; p=0.000). Conclusion There is a statistically highly significant difference between the values of ScO2 and SpO2. Having the knowledge of this difference can increase the accuracy of clinical evaluation and further diagnostics. Comparison in up-to-now conducted studies suggests that the squeezing of the foot for obtaining a capillary sample in relation to free blood outflow does not bear any significant influence on the resultant values of haemoglobin saturation. .
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