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Correlation between Ozone and Total VOCs in Printing Environment

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Journal of Chemistry and Chemical Engineering 2011年第5期5卷 423-428页

作者： Kiurski jelena Adamovie Dragan Oros Ivana Krstie jelena Adamovie Savka Vojinovie Miloradov Mirjana Kovacevic Ilija Faculty of Technical Sciences University of Novi Sad Trg Dositeja Obradovica 6 21000 Novi Sad Serbia

In this study, indoor air quality （IAQ） assessments were carried out in a screen printing facility. The air sampling was conducted in press department, including two different types of screen printing machines： semi-automatic and automatic. Air samples were collected and analyzed in situ for 4 times, once per 2 hours, during working time of 8 hours. Analysis of the experimental data showed that ambient ozone concentrations slowly increases with the increasing of TVOCs concentration and intensive use of UV lamps during automatic screen printing process. Therefore, the detected concentration levels of ozone and VOCs were compared with the Occupational Safety and Health Administration （OSHA） and Serbian Regulation. Comparison of the two mentioned standard regulations, the ozone concentrations in indoor printing air were from 0.83 to 8.1 and 2.4 to 16.2 times higher in the relation to the prescribed PEL and maximum allowed concentration （MAC） values, respectively, while the concentrations of particular VOCs were much below the PEL prescribed by the OSHA.

关键词： Ozone total volatile organic compounds (TVOCs) screen printing process printing environment.

Corrosion behaviour of thixoformed and heat-treated ZA27 alloys in NaCl solution

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Transactions of Nonferrous Metals Society of China 2013年第4期23卷 931-941页

作者： Biljana BOBIC jelena BAJAT Zagorka ACIMOVIC-PAVLOVIC Ilija BOBIC Bore JEGDIC Institute"Gosa" University of BelgradeMilana Rakica 3511000 BelgradeSerbia Faculty of Technology and Metallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia "Vinca"Institute of Nuclear Sciences University of BelgradeMike Petrovica Alasa 12-1411001 BelgradeSerbia

The influence of corrosion on the microstructure of thixoformed and heat-treated ZA27 alloys was investigated. The microstructure of ZA27 alloy was affected by heat treatment. The process of electrochemical corrosion occurs in both ZA27 alloys through the area of r/phase. According to the results of immersion test and electrochemical measurements, the corrosion rate of the thixoformed ZA27 alloy is at least 50% lower than that of the thixoformed and thermally processed alloy. This indicates the unfavourable influence of applied heat treatment （T4 regime） on the corrosion resistance of the thixoformed ZA27 alloy.

关键词： ZA27 alloy thixoforming corrosion heat treatment microstructure

Analysis of Risk Factors for Early Mortality in Surgical Shunt Palliation:Time for a Change?

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Congenital Heart Disease 2023年第5期18卷 539-550页

作者： François-Xavier Van Vyve Karlien Carbonez jelena Hubrechts Geoffroy de Beco Jean ERubay Mona Momeni Thierry Detaille Alain J.Poncelet Department of Cardiovascular and Thoracic Surgery Universitécatholique de Louvain(UCLouvain)-Cliniques Universitaires Saint-LucBrusselsBelgium Department of Pediatric Cardiology Universitécatholique de Louvain(UCLouvain)-Cliniques Universitaires Saint-LucBrusselsBelgium Department of Anesthesiology Universitécatholique de Louvain(UCLouvain)-Cliniques Universitaires Saint-LucBrusselsBelgium Department of Pediatric Intensive Care Universitécatholique de Louvain(UCLouvain)-Cliniques Universitaires Saint-LucBrusselsBelgium

Objectives:Over the last decade,neonatal repair has been advocated for many congenital heart ***,specific subgroups of complex congenital heart disease still require temporary palliation for which both surgical and endovascular techniques are currently *** reviewed our institutional experience with shunt palliation with an emphasis on risk factors for early ***:This is a single-center retrospective study on 175 patients undergoing surgery for central shunt or modified Blalock-Taussig *** data were extracted from a prospectively collected computerized *** identified risk factors for early mortality by uni-and multi-variable *** data were censored at the time of death or shunt take-down ***:Mean age and weight at surgery were 24 days(IQR[7–95])and 3.4 kg(IQR[2.9–4.8]),respectively,with 96 neonates(55%).Most patients had a biventricular heart disease(115 patients,66%),and 51 patients(29.1%)had univentricular heart *** was performed in 129 patients(74%).Cardiopulmonary bypass was used in 23 patients(13%).The median intensive care and overall length of stay were 4 days(IQR[2–9])and 18 days(IQR[13–29]),***-hospital mortality was 8.6%(15/175).By multivariable regression analysis,prematurity(HR 5.6[2.1–14.7]),CPB use(HR 6.7[2.2–18.6]),unplanned<30-day reoperation(HR 3.5[1.2–10])or catheterization(HR 4.5[1.2–16.9])were all significant predictors of early ***:Procedural-related mortality remains high(8.6%)in surgical shunt *** patients with prematurity,low weight at birth,or if the use of cardiopulmonary bypass is contemplated,alternative endovascular techniques of palliation should be considered together with longitudinal follow-up studies.

关键词： Congenital heart disease cyanosis palliation neonates outcome

Effect of special types of bread with select herbal components on postprandial glucose levels in diabetic patients

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World Journal of Diabetes 2024年第4期15卷 664-674页

作者： Drasko M Gostiljac Srdjan S Popovic Vesna Dimitrijevic-Sreckovic Sasa M Ilic jelena A Jevtovic Dragan M Nikolic Ivan A Soldatovic Clinic for Endocrinology Diabetes and Metabolic DiseasesUniversity Clinical Centre of SerbiaBelgrade 11000Serbia Faculty of Medicine University of BelgradeBelgrade 11000Serbia Clinic for Gastroenterology and Hepatology University Clinical Centre of SerbiaBelgrade 11000Serbia Clinic for Endocrinology Diabetes and Metabolic Diseases-Laboratory for Human Pancreatic Islets CultureUniversity Clinical Centre of SerbiaBelgrade 11000Serbia

BACKGROUND Nutrition recommendations in patients with type 2 diabetes mellitus(T2DM)are to consume rye or integral bread instead of white bread.A positive effect on glucoregulation has been achieved by enriching food with various biologically active substances of herbal origin,so we formulated an herbal mixture that can be used as a supplement for a special type of bread(STB)to achieve better effects on postprandial glucose and insulin levels in patients with *** To compare organoleptic characteristics and effects of two types of bread on postprandial glucose and insulin levels in T2DM *** This trial included 97 patients with T2DM.A parallel group of 16 healthy subjects was also *** participants were given 50 g of rye bread and the same amount of a STB with an herbal mixture on 2 consecutive *** blood glucose and insulin levels were compared at the 30^(th),60^(th),90^(th) and 120th min.A questionnaire was used for subjective estimation of the organoleptic and satiety features of the two types of *** Compared to patients who consumed rye bread,significantly lower postprandial blood glucose and insulin concentrations were found in T2DM patients who consumed *** relevant differences were found among the healthy *** estimated organoleptic and satiety characteristics are better for STB than for rye *** STB have better effects than rye bread on postprandial glucoregulation in T2DM *** estimated organoleptic and satiety characteristics are better for STB than for rye ***,STB can be recommended for nutrition in T2DM patients.

关键词： Special types of bread Postprandial glucoregulation Insulin Nutrition Type 2 diabetes mellitus

Optical frequency synthesizer with an integrated erbium tunable laser

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Light(Science & Applications) 2019年第1期8卷 22-29页

作者： Ming Xin Nanxi Li Neetesh Singh Alfonso Ruocco Zhan Su Emir Salih Magden jelena Notaros Diedrik Vermeulen Erich P.Ippen Michael R.Watts Franz X.Kartner Research Laboratory of Electronics Massachusetts Institute of TechnologyCambridgeMA 02139USA John A.Paulson School of Engineering and Applied Science Harvard UniversityCambridgeMA 02138USA Center for Free-Electron Laser Science DESY and Hamburg UniversityNotkestraße 8522607 HamburgGermany Institute of Microelectronics Agency for ScienceTechnology and Research(A*STAR)138634 SingaporeSingapore Analog Photonics 1 Marina Park DriveBostonMA 02210USA Department of Electrical and Electronics Engineering Koc UniversitySarıyerIstanbul 34450Turkey

Optical frequency synthesizers have widespread applications in optical spectroscopy,frequency metrology,and many other ***,their applicability is currently limited by size,cost,and power *** photonics technology,which is compatible with complementary-metal-oxide-semiconductor fabrication processes,provides a low-cost,compact size,lightweight,and low-power-consumption *** this work,we demonstrate an optical frequency synthesizer using a fully integrated silicon-based tunable *** synthesizer can be self-calibrated by tuning the repetition rate of the internal mode-locked laser.A 20 nm tuning range from 1544 to 1564 nm is achieved with~10−13 frequency instability at 10 s averaging *** flexibility and fast reconfigurability are also demonstrated by fine tuning the synthesizer and generating arbitrary specified patterns over time-frequency *** work promotes the frequency stability of silicon-based integrated tunable lasers and paves the way toward chip-scale lowcost optical frequency synthesizers.

关键词： synthesizer tunable tuning

Gender Differences in Acute Cadmium-Induced Systemic Inflammation in Rats

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Biomedical and Environmental Sciences 2009年第1期22卷 1-7页

作者： MILENA KATARANOVSKI SRDJA JANKOVIC DRAGAN KATARANOVSKI jelena STOIC DESA BOGOJEVIC Department of Ecology Institute for Biological Research"Sinia Stankovi"Bulevar Despota Stefana 14211060 BelgradeSerbia Department of Molecular Biology Institutefor Biological Research"Sinia Stankovi"Bulevar Despota Stefana 14211060 BelgradeSerbia

Objective To examine the presence of gender differences in pro-inflammatory potential of cadmium in rats by comparing systemic inflammatory response to acute cadmium intoxication in animals of the two sexes. Methods Basic aspects of this response were evaluated, including plasma levels of inflammatory cytokines tumor necrosis factor （TNF） and interleukin-6 （IL-6） and of major rat acute phase protein alpha 2-macroglobulin （alpba2-M）, as soluble indicators of inflammation, and the number and activity of peripheral blood leukocytes, as cellular indicators of inflammation. Results Differential increases of IL-6 and alpha 2-M （higher in males than in females） in peripheral blood cell counts and types （leukocytosis and shift in the ratio of granulocytes to lymphocytes more pronounced in males vs females） and in levels of neutrophil priming （higher in males vs females） were noted. Conclusion The data document a more intense inflammatory response to cadmium administration in males. The sex differences in inflammatory effects of cadmium might be taken into consideration in studying the toxicity of this heavy metal.

关键词： Cadmium Sex Rats Inflammation

Inactivation of Yersinia enterocolitica in Fermented Sausages during Fermentation

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Journal of Agricultural Science and Technology(B) 2015年第9期5卷 626-634页

作者： jelena Ivanovic Radmila Mitrovic jelena Janjic Marija Boskovic Vesna Dordevic Jasna Djordjevic Tatjana Baltic Milan Baltic Department of Food Hygiene and Technology Faculty of Veterinary Medicine University of Belgrade Bulevar Oslobodenja 18 Belgrade 11000 Serbia Institute of Meat Hygiene and Technology Ka6anskog 13 Belgrade 11000 Serbia

The purpose of this study was to evaluate the storage conditions as a way to increase the safety of fermented sausage, with the specific objectives to investigate the effect of storage time, pH value, water activity and microbiological status （Lactobacillus spp and Enterobacteriaceae） on the levels of Yersinia enterocolitica in fermented sausages. For this experiment, meat was divided into four equal portions of 10 kg each. The first portion was control group （C1 group） without addition of Y. enterocolitica and starter culture. The second portion （CII group） was inoculated starter, the third portion （EI group） was inoculated with I1. enterocolitica and the fourth portion （Eli group） was inoculated Y.. enterocolitica and starter culture. Sampling was performed by randomly selecting two links of each sausage preparation at the 0, 3rd, 6th, 9th, 15th, 25th and 35th day of drying. Results show that Y. enterocolitica and Enterobacteriaceae were not detected after 25 d of storage. The results indicate that practice utilizing starter culture is satisfactory to reduction of pathogen if present. Thus, inclusion with starter cultures in a maturation period may increase the safety of fermented sausages.

关键词： Growth inhibiton lactic acid bacteria pH value sausages Y. enterocolitica.

Resiliency oriented control of a smart microgrid with photovoltaic modules

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Global Energy Interconnection 2021年第5期4卷 441-452页

作者： Sambeet Mishra Kristjan Peterson Tauno Hilimon jelena Shuvalova Fushuan Wen Ivo Palu Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology

The resiliency of a standalone microgrid is of considerable issue because the available regulation measures and capabilities are *** this background,this paper presented a new mathematical model for a detailed photovoltaic(PV)module and the application of new control techniques for efficient energy *** PV module employs a single-stage conversion method to integrate it with the utility *** extraction the maximum power from PV and integrate it to power grid,a three-phase voltage source converter is *** obtaining the maximum power at a particular irradiance a maximum power point tracking(MPPT)scheme is *** fuzzy logic control and adaptive network-based fuzzy inference system are proposed for direct current(DC)link voltage *** proposed model and control scheme are validated through a comparison with the standard power-voltage and current-voltage charts for a PV *** results demonstrate that the system stability can be maintained with the power grid and in the island mode,in contrast with the MPPT.

关键词： PV module MPPT Adaptive network-based fuzzy inference system(ANFIS) Converter control Grid integration

Mn^(5+)-activated Ca_(6)Ba(PO_(4))_(4)O near-infrared phosphor and its application in luminescence thermometry

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Light(Science & Applications) 2022年第10期11卷 2463-2475页

作者： Miroslav D.Dramicanin Lkasz Marciniak Sanja Kuzman Wojciech Piotrowski Zoran Ristic Jovana Perisa Ivana Evans jelena Mitric Vesna Dordevic Nebojsa Romcevic Mikhail G.Brik Chong-Geng Ma School of Optoelectronic Engineering&CQUPT-BUL Innovation Institute Chongqing University of Posts and TelecommunicationsChongqing 400065PR China Centre of Excellence for Photoconversion Vinca Institute of Nuclear Sciences-National Institute of the Republic of SerbiaUniversity of BelgradeP.O.Box 522Belgrade 11001Serbia Institute of Low Temperature and Structure Research Polish Academy of SciencesOkólna 250-422 WroclawPoland Department of Chemistry Durham UniversityDurham DH13LEUK Institute of Physics University of BelgradePregrevica 11811080 BelgradeSerbia Institute of Physics University of TartuTartu 50411Estonia Department of Theoretical Physics Jan D?ugosz UniversityCzestochowa PL 42200Poland Academy of Romanian Scientists Ilfov Str.No.3050044 BucharestRomania

The near-infrared luminescence of Ca_(6)Ba(PO_(4))_(4)O∶Mn^(5+)is demonstrated and *** excited into the broad and strong absorption band that spans the 500-1000 nm spectral range,this phosphor provides an ultranarrow(FWHM=5 nm)emission centered at 1140 nm that originates from a spin-forbidden ^(1)E → ^(3)A_(2) transition with a 37.5%internal quantum efficiency and an excited-state lifetime of about 350 μ*** derived the crystal field and Racah parameters and calculated the appropriate Tanabe-Sugano diagram for this *** found that 1E emission quenches due to the thermally-assisted cross-over with the ^(3)T_(2) state and that the relatively high Debye temperature of 783 K of Ca_(6)Ba(PO_(4))_(4)O facilitates efficient *** Ca_(6)Ba(PO_(4))_(4)O also provides efficient yellow emission of the Eu^(2+)dopant,we calculated and explained its electronic band structure,the partial and total density of states,effective Mulliken charges of all ions,elastic constants,Debye temperature,and vibrational ***,we demonstrated the application of phosphor in a luminescence intensity ratio thermometry and obtained a relative sensitivity of 1.92%K^(-1) and a temperature resolution of 0.2 K in the range of physiological temperatures.

关键词： spectra. luminescence excited