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Anti-inflammatory efficiency of levobupivacaine in an experimental colitis model

World Journal of Gastroenterology 2010年第20期16卷 2537-2541页

作者： ugur duman Aysun Yilmazlar Ersin Ozturk Sibel Aker Emre Sarandol Tuncay Yilmazlar Department of General Surgery Uludag University School of Medicine16069 BursaTurkey Department of Anesthesiology and Reanimation Uludag University School of Medicine16069 BursaTurkey Department of Pathology Uludag University School of Medicine16069 BursaTurkey Department of Biochemistry Uludag University School of Medicine16069 BursaTurkey

AIM:To investigate the efficiency of levobupivacaine in treating experimentally induced colitis in ***:Colitis was induced by trinitrobenzene sulfonic acid and ethanol in 30 rats under general anesthesia,and 10 rats were used as a sham *** to induction of colitis,rats were divided into three groups;budesonide group received 0.1 mg/kg budesonide,levobupivacaine group received 10 mg/kg levobupivacaine and saline group received 1 mL saline solution via rectal route for 7 *** the sham group,only routine rectal catheterization was performed without use of any *** the end of 7 d,laparotomy and total colectomy were performed for histopathological ex-amination in all rats and blood samples were drawn for measurement of tumor necrosis factor(TNF)-αand interleukin(IL)-6 following cardiac *** and microscopic evaluations of the specimens were performed by a pathologist blinded to group assignment of the ***:Weight loss(P=0.016)and macroscopic examination scores(P=0.001)were significantly higher in saline group than *** scoring was comparable between all colitis groups(P=0.350).There was no significant difference in TNF-αlevels and IL-6 levels(P=0.150).CONCLUSION:The significant improvement in macroscopic scores suggests that levobupivacaine may have topical anti-inflammatory effects in an experimental colitis model;however,this finding was not supported by microscopic findings.

关键词： Trinitrobenzene sulfonic acid Colitis Levobupivacaine Budesonide

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Enhancing the efficiency of cabin heaters in emergency shelters after earthquakes through an optimized fuzzy controller

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Building Simulation 2023年第9期16卷 1759-1776页

作者： Erkan duman Dila Seckin Computer Engineering Department Engineering FacultyFirat UniversityElazig 23119Turkey

In just one and half minutes,more than fifty thousand died due to the 7.7 and 7.6 magnitude earthquakes that struck Turkey’s southeast on February 6,2023;thousands of families who barely escaped struggled to survive in the freezing weather.A warm shelter was the most basic requirement of these *** buildings are a rapid and easy solution to this ***,there is a need for a more effective and safe heating option than a wood fire for these *** this study,cabin heaters,which allow truck drivers to warm up when they park their vehicles to sleep,are specially optimized for emergency shelters after an *** optimized fuzzy controller was developed to use in such buildings,which allows an air–fuel ratio in the combustion chamber of the cabin heater to be controlled adaptively based on system dynamics to get lower carbon emissions and fuel *** TRNSYS software was used to establish the transient simulation model of a cabin heater with a capacity of 4 kW for a typical 21 m^(2) shelter building in Turkey’s cold *** developed fuzzy controller carried out the heating process of this shelter from the 15th of November to the 15th of *** of using expert knowledge,the Gray Wolf Optimization(GWO)method was applied to optimize the fuzzy controller parameters developed for the cabin *** the optimized fuzzy controller,the fuel consumption at the end of the heating season was reduced by an average of 0.2 L/h,and the cabin heater’s efficiency increased by more than 13%.Our simulation results show that the intelligent controller we developed could improve diesel fuel combustion efficiency by up to 85%.

关键词： parking heater cabin heater emergency shelters fuzzy controller gray wolf optimization TRNSYS simulation

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Influences of 2.5wt%Mn addition on the microstructure and mechanical properties of Cu-Al-Ni shape memory alloys

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International Journal of Minerals,Metallurgy and Materials 2010年第2期17卷 192-198页

作者： ugur Sari Department of Computer Education and Instructional Technology Faculty of EducationKinkkale University

The influences of 2.5wt%Mn addition on the microstructure and mechanical properties of the Cu-11.9wt%Al-3.8wt%Ni shape memory alloy（SMA） were studied by means of scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,and differential scanning calorimeter（DSC）.The experimental results show that Mn addition influences considerably the austenite-martensite transformation temperatures and the kind of martensite in the Cu-Al-Ni *** martensitic transformation changes from a mixedβ1→β＇1＋γ＇1 transformation to a singleβ1→β＇1 martensite transformation together with a decrease in transformation *** addition,the observations reveal that the grain size of the Cu-Al-Ni alloy can be controlled with the addition of 2.5wt%Mn and thus its mechanical properties can be *** Cu-Al-Ni-Mn alloy exhibits better mechanical properties with the high ultimate compression strength and ductility of 952 MPa and 15%,*** improvements are attributed to a decrease in grain ***,the hardness decreases from Hv 230 to Hv 140 with the Mn addition.

关键词： Cu-Al-Ni shape memory alloys martensitic transformations grain size mechanical properties.

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Nickel accumulation and its effect on biomass,protein content and antioxidative enzymes in roots and leaves of watercress(Nasturtium officinale ***.)

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Journal of Environmental Sciences 2010年第4期22卷 526-532页

作者： Fatih duman Fatma Ozturk Faculty of Arts and Sciences Department of BiologyErciyes University

In order to understand its response towards nickel stress, watercress （Nasturtium officinale R. Br.） was exposed to nickel （1-25 mg/L） for 1, 3, 5 and 7 days. The accumulation and translocation of nickel were determined and the influence of nickel on biomass, protein content and enzymatic antioxidants was examined for both roots and leaves. It was determined that N. o fficinale could accumulate appreciable amounts of Ni in both roots and leaves. Nickel accumulated particularly in the roots of plants. Biomass increased at low nickel concentrations but certain measurable change was not found at high concentrations. Under stress conditions the antioxidant enzymes were up-regulated compared to control. An increase in protein content and enzyme activities was observed at moderate exposure conditions followed by a decline at both roots and leaves. The maximum enzyme activities were observed at different exposure conditions. Our results showed that N. officinale had the capacity to overcome nickel-induced stress especially at moderate nickel exposure. Therefore, N. officinale may be used as a phytoremediator in moderately polluted aquatic ecosystems.

关键词： nickel accumulation antioxidative enzymes biomass watercress

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Evolution of Structural and Magnetic Properties of BaFe12O19 with B2O3 Addition

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Chinese Physics Letters 2010年第11期27卷 177-180页

作者： ugur Topal Nationai Metrology Institute Tubitak UME P.K. 54 Gebze 41470-Kocaeli Turkey

We investigate the effects of B2O3 addition on structural and magnetic properties of hard magnetic BaFe12O19 particles. The conventional solid state reaction method is used as the synthesis route. Single phase BaFe12O19 could be synthesized with very small amounts of B2O3 addition and with calcination at low temperatures （850°C） in short times （1 h）. B2O3 addition also improves the magnetic parameters significantly. Remanence magnetization and specific magnetization at 1.5 T increase by ～40% in magnitude although no significant variations on coercivity is observed.

关键词： Condensed matter: electrical magnetic and optical Nanoscale science and low-D systems Condensed matter: structural mechanical & thermal

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Does energy policy uncertainty matter for renewable energy and energy efficiency technologies?An affordable and clean energy perspective

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Geoscience Frontiers 2024年第6期15卷 516-527页

作者： ugur Korkut Pata Department of Economics College of Political Science and EconomicsKorea UniversitySeoul 02481South Korea Department of Economics Hatay Mustafa Kemal UniversityHatayTürkiye Clinic of Economics Azerbaijan State University of Economics(UNEC)BakuAzerbaijan Advance Research Centre European University of LefkeLefkeNorthern CyprusTR-10 MersinTürkiye Economic Research Center(WCERC) Western Caspian UniversityBakuAzerbaijan

Uncertainty can affect both macroeconomic indicators and the *** are implementing various energy policies to combat global warming,but these policies contain some uncertainties and *** environmental impact of uncertainties in energy policies is a research topic that has just begun to be investigated by *** study examines the effects of energy policy uncertainty(ENERPU)on renewable energy R&D(RR&D),energy efficiency R&D(EER&D)and renewable energy consumption in the four countries with the highest RR&D expenditures(USA,Germany,Japan,and Spain).The study uses the novel multivariate quantile-on-quantile(M-QQR)approach from 2003m1 to *** results of the study show:(i)The impact of ENERPU varies by quantile and country.(ii)ENERPU causes a decrease in renewable energy consumption and hinders RR&D expenditures.(iii)ENERPU increases EER&*** Fourier quantile causality test confirms the robustness of the empirical *** on these findings,policymakers are recommended to minimize ENERPU and implement stable energy policies to develop the renewable energy sector and technologies.

关键词： Energy policy uncertainty Energy technologies Renewable energy Multivariate quantile approach

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THE EFFECT OF BILINEAR BEHAVIOUR ON THE DIRECTION AND MAGNITUDE OF THE PEELING MOMENT IN A BI-MATERIAL BEAM

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Acta Mechanica Solida Sinica 2011年第6期24卷 506-509页

作者： ugur Gven Yildiz Technical University Department of Mechanical Engineering

In this work a bi-material beam exhibiting partly bilinear behaviour under a uniform temperature change is analyzed. The essence of solution is based on the approach of Timoshenko＇s mechanics of materials, The main aim of the present analysis is to understand the effect of the bilinear behaviour on the peeling moment. This theoretical mechanics model mentioned here can give us useful insights to improve the resistance against the delamination.

关键词： peeling moment layered structures interface thermo mechanical delamination

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Discussion on "Thermomagnetic viscoelastic responses in a functionally graded hollow structure"

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Acta Mechanica Sinica 2012年第3期28卷 911-912页

作者： ugur Güven Department of Mechanical Engineering Yildiz Technical University34349 BesiktasIstanbul-Turkey

Allam and Tantawy [1] presented an analytical solu- tion for stress distribution and perturbations of the magnetic field vector in FGM hollow structures made from viscoelas- tic composite materials .While studying thi... 详细信息

关键词： Discussion on Thermomagnetic viscoelastic responses in a functionally graded hollow structure Maxwell FGM

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Assessment of air pollution genotoxicity by RAPD in Evernia prunastri L. Ach. from around iron-steel factory in Karabk, Turkey

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Journal of Environmental Sciences 2011年第7期23卷 1171-1178页

作者： Demet Cansaran-duman Orhan Atakol Smer Aras Refik Saydam National Public Health Agency Drug and Cosmetics Research Department Laboratories Department of Chemistry Faculty of Science University of Ankara Biotechnology Section Department of Biology Faculty of Science University of Ankara

Lichens are widely used in biomonitoring studies of air pollution, either as bioindicators of air quality or as bioaccumulators of atmospheric deposition. Over the past decade, several molecular techniques have been developed to provide information on diversity, genotoxicology, genetic relationships, etc. The heavy metal contents of Evernia prunastri samples were determined by atomic absorption spectrometry. The Random Amplified Polymorphic DNA Polymerase Chain Reaction （RAPD-PCR） method was used to describe the pattern of DNA band variation in the samples influenced by the environmental pollution. The study was designed to describe the level of pollution in an area contaminated with smoke and waste from an iron-steel factory, and to reveal the level of potential genotoxic agents around this source of pollution. The study also examined the suitability of the lichen samples for the detection of genotoxicity.

关键词： air pollution Evernia prunastri RAPD genotoxicity

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Electronic structure calculations of rare-earth intermetallic compound YAg using ab initio methods

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Journal of Rare Earths 2009年第4期27卷 664-666页

作者： S.ugur G.ugur F.Soyalp R.Ellialt1oglu Department of Physics Gazi University Teknikokullar Ankara 06500 Turkey Department of Physics Yüzüncü Yll University Zeve Kampüsü Van 65080 Turkey Department of Physics Engineering Hacettepe University Beytepe Ankara 06800 Turkey

The structural, elastic and electronic properties of YAg-B2（CsCl） were investigated using the first-principles calculations. The energy band structure and the density of states were studied in detail, including partial density of states （PDOS）, in order to identify the character of each band. The structural parameters （lattice constant, bulk modulus, pressure derivative of bulk modulus） and elastic constants were also obtained. The results were consistent with the experimental data available in the literature, as well as other theoretical results.

关键词： YAg electronic band structure density of states elastic constants ab initio rare earths

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