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Dissertations / Theses on the topic 'Oksidasi'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Taute, Cornelius Johannes Frans. "Interpretasie van β-oksidasie metaboliet profiele : 'n metabolomika gebaseerde benadering / Cornelius Johannes Frans Taute". Thesis, North-West University, 2005. http://hdl.handle.net/10394/1332.

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2

Gürbay, Aylin. "GABA antagonisti siprofloksazin’in sitotoksisite ve oksidan stres indükleyci etkileri üzerinde çalişsmalar." Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE18012.

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Bu çalışmada, SSS'ndeki zıt etkileri GABA antagonistik aktivitesi ile izah edilegelen fluorokinolon grubu antibiyotik siprofoksazin (CPR)in oksidatif stres ve lipit peroksidasyonu indükleme potansiyeli ve mekanizmaları in vitro koşullarda araştırılmıştır. CPR'in insan normal cilt fibroblast hücresi kültürlerinde ve sıçan primer astrosit hücrelerinde yüksek konsantrasyonlarda sitotoksik olduğu ve lipit peroksidasyonunu indüklediği; hücrelerin E vitamını (α-tokoferol) ile ön inkübasyonunun bu etkileri önlediği gözlenmiştir. CPR'in sıçan beyin ve karaciğer mikrozomlarında da lipit peroksidasyonun

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3

Ljubica, Đačanin. "Luminescentna svojstva litijum-indijum oksida dopiranog jonima retkih zemalja." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=90817&source=NDLTD&language=en.

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Predmet istraživanja ove doktorske disertacije su prahovi litijum-indijum oksida dopirani različitim jonima retkih zemalja (Eu<sup>3+</sup>; Sm<sup>3+</sup>; Er<sup>3+</sup>; Yb<sup>3+</sup>), sintetisani reakcijom u  čvrstoj fazi. Litijum-indijum oksid ima raznovrsne potencijalne primene u viduscintilatora,  matrice fosfora za jone retkih zemalja, za  čuvanje i konverziju energije i u fotokatalizi. U istraživanju je ustanovljena optimalna metoda sinteze fazno  čistih prahova novih fosfora LiInO<sub>2</sub>:RE<sup>3+ </

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4

Daniela, Šojić. "Fotokatalitička aktivnost dopovanog titan(IV)-oksida u razgradnji nekih pesticida." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2009. https://www.cris.uns.ac.rs/record.jsf?recordId=16610&source=NDLTD&language=en.

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Kao &scaron;to je poznato, RS-2-(4-hlor-o-toliloksi)propionska kiselina (MCPP), (4-hlor-2-metilfenoksi)sirćetna kiselina (MCPA) i 3,6-dihlorpiridin-2-karboksilna kiselina  (klopiralid) su herbicidi sa veoma &scaron;irokim spektrom dejstva, a pored toga su rastvorljivi u vodi, te&scaron;ko biorazgradljivi i prema literaturnim podacima su, nažalost, veoma često prisutni herbicidi u pijaćoj vodi. Proces heterogene fotokatalize uz primenu TiO<sub>2</sub>i UV zračenja se pokazao kao veoma pogodan način za njihovo uklanjanje iz vode. Međutim, zbog velikog energetskog pr

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5

Cüre, Erkan Alanoğlu Güçhan. "Ratlarda demir yüklenmesi ile oluşturulan oksidatif stresin önlenmesinde Kafeik Asit Fenetil Ester'in etkinliğinin araştırılması /." Isparta : SDÜ Tıp Fakültesi, 2007. http://tez.sdu.edu.tr/Tezler/TT00341.pdf.

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6

Milica, Hadnađev-Kostić. "Strukturna i fotokatalitička svojstva sistema na bazi modifikovanih slojevitih hidroksida i oksida titana." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2013. https://www.cris.uns.ac.rs/record.jsf?recordId=83240&source=NDLTD&language=en.

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Usled visoke fotokatalitičke efikasnosti u procesima preči&scaron;ćavanja voda i vazduha, titan(IV)-oksid (TiO<sub>2</sub>) se u poslednje vreme sve vi&scaron;e ispituje u oblasti za&scaron;titi životne okoline. Međutim usled visokih zahteva koje fotokatalizatori u ovoj oblasti treba da zadovolje, kao &scaron;to su aktivnost, selektivnost, netoksičnost, ekonomičnost i stabilnost, potreba za razvojem fotokatalizatora sa povoljnijim karakteristikama se sve vi&scaron;e nameće kao prioritet za buduća istraživanja. Inovativni pristup ove doktorske disertacije je usmeren upravo ka razvoju novih komp

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7

Tanja, Radusin. "Priprema i karakterizacija nanokompozita polimlečne kiseline i silicijum (IV) oksida namenjenog za pakovanje hrane." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94853&source=NDLTD&language=en.

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Poli(mlečna kiselina) (PLA) predstavlja jedan od najpopularnijih komercijalnih biorazgradivih polimera. Iako može da zameni neke od najče&scaron;će kori&scaron;ćenih sintetskih polimera, neka njegova svojstva (lo&scaron;a barijerna, termička i mehanička) jo&scaron; uvek predstavljaju prepreku u &scaron;iroj primeni, posebno za pakovanje hrane. Jedan od najsavremenijih načina prevazilaženja nedostataka u svojstvima biopolimera predstavljaju nanotehnologije.U ovom radu ispitan je uticaj dodatka različitih koncentracija hidrofobnih nanočestica silicijum (IV) oksida (od 0.2 mas.% do 5 mas.%) pripr

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8

Ana, Firanj. "Modeliranje turbulentnog transporta ugljen-dioksida i azotnih oksida u površinskom sloju atmosfere iznad ruralne oblasti." Phd thesis, Univerzitet u Novom Sadu, Asocijacija centara za interdisciplinarne i multidisciplinarne studije i istraživanja, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=92472&source=NDLTD&language=en.

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U okviru doktorske disertacije predstavljeni su postojeći i novi koncepti modeliranjaturbulentnog transporta ugljen-dioksida i azotnih oksida u povr&scaron;inskom sloju atmosfereiznad ruralne oblasti. Cilj istraživanja je da se na osnovu postojećih saznanja o procesimakoji opisuju interakciju tlo-vegetacija-atmosfera i rezultata mikrometeorolo&scaron;kiheksperimenata unapredi modeliranje procesa interakcije. Poseban akcenat stavljen je namodeliranje turbulentnog transporta gasova iznad i unutar &scaron;umskog sklopa. Uticajvertikalne heterogenosti biljnog sklopa uveden je u predloženi postupak

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9

Uzar, Ertuğrul Koyuncuoğlu Hasan Rifat. "Metotreksat uygulanan ratların siyatik sinir ve medülla spinalisinde oksidan/antioksidanların durumu : Kafesik asit fenetil ester'in antioksidan koruyucu etkisi /." Isparta: SDÜ Tıp Fakültesi, 2006. http://tez.sdu.edu.tr/Tezler/TT00276.pdf.

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10

Rajackas, Tomas. "Titano dangų oksidavimas reaktyvioje vandens garų plazmoje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130204_164054-80983.

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Šiame darbe apžvelgiama plazmos savybės, jonų ir atomų sąveika su kietų kūnų paviršiais, balistiniai procesai. Aptarti plonų dangų nusodinimo metodai, titano dioksido (TiO2) panaudojimo galimybės ir fotokatalitinis efektas. TiO2 yra plačiai naudojamas pramonėje dėl savo gerų mechaninių, elektrinių ir optinių savybių. Magnetroninis dulkinimas buvo pasirinktas dangų formavimo procese. Darbo tikslas – oksiduoti titano dangas reaktyvioje vandens garų plazmoje naudojant joninio implantavimo technologiją ir paaiškinti deguonies bei vandenilio judėjimo mechanizmą Ti dangose. Bandiniai paveikti skirti

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11

Karaliūnas, Mindaugas. "Optoelektronikos prietaisams skirtų įvairialyčių cinko oksido darinių tyrimas spektroskopijos metodais." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20130925_093650-24629.

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Daktaro disertacijoje pristatomi cinko oksido pagrindu užaugintų puslaidininkinių sluoksnių ir jų įvairialyčių darinių, skirtų taikymams optoelektronikoje, tyrimų rezultatai spektroskopijos metodais. Optiškai charakterizuoti aukštos kokybės cinko oksido sluoksniai ir jų įvairialyčiai dariniai: ZnO, ZnO:Ga ir MgZnO epitaksiniai sluoksniai, auginti molekulinės epitaksijos būdu, ZnO:N sluoksniai, auginti magnetroninio dulkinimo būdu, šviesos diodams paruošti CdZnO/ZnO kvantinių duobių dariniai ant GaN sluoksnių, auginti apjungiant molekulinės epitaksijos ir cheminio metaloorganinio junginio nusod

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12

Karaliūnas, Mindaugas. "Investigation of Zinc Oxide Heterostructures for Optoelectronic Devices by Means of Spectroscopy Methods." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20130925_093437-48058.

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In doctoral dissertation, results of investigation on zinc oxide based semiconductor layers and heterostructures for application in optoelectronics by spectroscopy methods are presented. High quality zinc oxide layers and heterostructures were characterized optically. That is ZnO, ZnO:Ga and MgZnO epitaxial layers grown by molecular beam epitaxy technique, ZnO:N layers grown by magnetron sputtering method, CdZnO/ZnO quantum wells structures for light-emitting diodes grown on GaN layers by combined molecular beam epitaxy and metalorganic chemical vapor deposition techniques. In this work, new d

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13

Roux, Wessel Cornelius. "The antioxidant properties of the methanol extract of Cotyledon orbiculata L. var orbiculata (Haw.) DC. Leaves / Wessel Cornelius Roux." Thesis, North-West University, 2013. http://hdl.handle.net/10394/8063.

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South Africa is a country of great diversity. Different climate zones and a host of different habitats make South Africa the perfect platform for rich floral diversity. This floral diversity lends itself to the study of natural products by discovering new natural drugs that can be used in the treatment of many illnesses. Studies into the antioxidant properties of plants that are used in traditional medicine are an important aspect of research to determine the rationale of the use of plants by traditional healers. Many neurodegenerative diseases, like epilepsy, Parkinson s and Alzheimer s dis

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14

Stankevičienė, Inga. "Synthesis and coatings production of carbonaceous nanostructures." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20121017_111706-30788.

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Films and coatings of carbonaceous nanostructures are employed in nanoelectronics, biotechnology and other fields. The aim of the research was to synthesize multi-walled carbon nanotubes and graphite oxide and fabricate coatings thereof. Consequently, multi-walled carbon nanotubes and their coatings were synthesized by the catalytic chemical vapour deposition method. As-grown carbon nanotubes inevitably contain remains of metal catalyst particles. A method developed in the laboratory using CCl4 was successfully applied to remove the residual catalyst from the batch of synthesized carbon nanotu

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15

Stankevičienė, Inga. "Anglinių nanostruktūrų sintezė ir dangų gamyba." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20121017_111714-25597.

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Unikaliomis savybėmis pasižyminčios anglinės nanostruktūros panaudojamos dangų ir plėvelių gamyboje, kurios pritaikomos nanoelektronikoje, biotechnologijoje ir kitose srityse. Šio darbo tikslas buvo susintetinti daugiasienius anglinius nanovamzdelius ir grafito oksidą, pagaminti ir ištirti jų dangas. Mūsų laboratorijoje daugiasieniai angliniai nanovamzdeliai buvo susintetinti cheminio nusodinimo iš garų fazės metodu. Susintetinto produkto valymui nuo katalizatoriaus priemaišų pirmą kartą buvo panaudoti CCl4 garai. Ištyrus CCl4 garais paveiktą medžiagą buvo pagrįstas šio valymo metodo efektyvum

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16

Fourie, Petrus Michiel. "Neuroprotective effects of amantadine–flavonoid conjugates / Fourie P.M." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7339.

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Neurodegenerative disorders like Parkinson’s and Alzheimer’s disease affect millions of people around the world. Oxidative stress has been implicated in the pathogenesis of a number of neurodegenerative disorders, cancer and ischemia. The brain is particularly vulnerable to oxidative damage because of its high utilisation of oxygen, high levels of polyunsaturated fatty acids, relatively high levels of redox transition metal ions and low levels of antioxidants. Oxidative stress occurs due to an imbalance in the pro–oxidant and antioxidant levels. Reactive oxygen/nitrogen species (ROS/RNS) is a

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17

Šapolaitė, Justina. "Radioaktyviųjų nuklidų dinamika heterogeninėse dispersinėse sistemose." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20091228_152734-17494.

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Ši daktaro disertacija glaudžiai siejasi su Ignalinos AE uždarymo ir radioaktyviųjų atliekų utilizavimo problemomis bei paieškomis medžiagų, galinčių atlikti technogeninių ir gamtinių barjerų funkcijas. Tuo tikslu šiame darbe buvo įvertinti pusiausvyros ir kinetiniai sorbcijos parametrai heterogeninėse sistemose bei ištirti vyksmai, lemiantys radionuklidų pašalinimą iš skystųjų radioactyvųjų atliekų bei sulaikymą dirbtiniais ir gamtiniais barjerais. Darbe buvo ištirti titano silikatai susintetinti Ukrainos Sorbcijos ir endoekologijos problemų institute bei geležies oksidai susintetinti ir apib

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Šapolaitė, Justina. "Dynamics of Radioactive Nuclides in Heterogeneous Dispersive Systems." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20091228_152746-86855.

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This PhD thesis is closely linked to the Ignalina NPP decommissioning activities and radioactive waste management as well as related to the searching for effective and low-cost materials which could operate as technogenic and natural barriers. The aim of the work is to evaluate equilibrium and kinetic sorption parameters in heterogeneous systems as well as to investigate sorption mechanisms and processes responsible for radionuclide removal from liquid radioactive waste and retention by artificial and natural barriers. Synthesized sorbents (titanium silicates and iron oxides) were used in sor

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19

Laurinaitis, Kastytis. "Dyzelinio variklio darbo proceso homogeniniu oro ir bioetanolio mišiniu tyrimas." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140630_092709-45813.

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Darbe tirta tiekiamo oro temperatūros, deginių recirkuliacijos ir degalų savybių įtaka suslėgimu uždegamo homogeninio oro – bioetanolio mišinio degimo procesui, variklio darbo ir deginių emisijos rodikliams. Nustatytos variklio darbo homogeniniu oro – bioetanolio mišiniu maksimalios apkrovos zona, kurią riboja slėgio didėjimo greitis ir susidarantis detonacinis degimas. Gautieji rezultatai varikliui veikiant bioetanoliu, lyginti su rezultatais gautais varikliui veikiant baziniais degalais – benzinu. Dyzeliniam varikliui dirbant homogeniniu oro ir bioetanolio mišiniu, keičiant tiekiamo oro temp

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20

Urbonavičius, Marius. "Titano okisdų formavimas vandens garų plazmoje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120202_132623-41801.

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Šio darbo literatūros apžvalgoje aptariami plazmos tipai, plazmos charakteristikos bei sąveika su medžiaga. Aptariama plazminės implantacijos technologija. Trumpai apibūdinama vandens garų plazma ir jos panaudojimas. Apžvelgiama titano oksido struktūra bei jo panaudojimas katalizatorių gamybai, kurie gali būti skirti skaldyti vandens molekules ir gaminti vandenilį. Darbe paaiškinamas magnetroninis nusodinimas bei jo privalumai. Darbo metu buvo oksiduojamas titanas vandens garų plazmoje. Titano oksidacija priklauso nuo daugybės plazmoje vykstančių procesų (adsorbcija, sulaikymas, vakansijų susi

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21

Mels, Catharina Martha Cornelia. "The assessment of detoxification metabolism in fatty acid oxidation deficiencies / C.M.C. Mels." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4406.

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The concept of accumulating xenobiotics within the human body as a health risk is well known. However, these compounds can also be endogenous, as in the case of inborn errors of metabolism. Biotransformation of both exogenous and endogenous toxic compounds is an important function of the liver, and the critical balance between these systems is of fundamental importance for cellular health. Fatty acid ?-oxidation deficiencies are associated with characteristic clinical symptoms as a consequence of the accumulation of specific metabolites. For these accumulated metabolites various nutrients are

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Voronovič, Jaroslav. "Aukso nanodalelių ir π-π konjuguoto polimero polipirolo taikymas gliukozės biologiniuose jutikliuose". Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20141006_103115-27177.

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Daktaro disertacijoje apibendrintų mokslinių tyrimų tikslas - pritaikyti aukso nanodaleles, skirtingas gliukozės oksidazes bei elektrai laidų polimerą polipirolą elektrodo modifikavimui bei gliukozės amperometriniam nustatymui biologiniais jutikliais. Aukso nanodalelės (AuND) imobilizuotos grafito elektrodo paviršiuje kartu su tirpiu elektronų pernašos tarpininku užtikrina efektyvesnę elektronų pernašą nuo gliukozės oksidazės (GOx) aktyvaus centro elektrodui fermentinės gliukozės oksidacijos metu. Naudojant AuND modifikuotus elektrodus amperometriniais biologiniais jutikliais registruojami ap

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Ramonaitė, Rima. "Epitelio ląstelių NADPH oksidazės vaidmuo žarnų uždegimo patogenezėje." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140711_163542-47545.

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Genetiniai ir funkciniai tyrimai parodė, kad oksidacinį stresą sukeliančios reaktyvios deguonies formos (angl. Reactive oxygen species, ROS) užima svarbų vaidmenį uždegiminių žarnų ligų (UŽL) patogenezėje. NADPH oksidazės šeimos fermentai (Nox1, Nox2, Nox3, Nox4, Nox5, Duox1 ir Duox2) - svarbus ROS šaltinis organizme. Šių fermentų gaminamos ROS molekulės veikia kaip antriniai signalų nešikliai, kurie aktyvina bei reguliuoja įvairius biologinius procesus, tokius kaip augimas, ląstelių diferenciacija, apoptozė ar uždegimas. NADPH oksidazės izoformos randamos gaubtinės žarnos ir virškinamojo trak

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Bukauskas, Virginijus. "Dujoms jautrių hibridinių darinių ir nanosistemų integruotų metalo oksido plėvelėse kūrimas ir tyrimai Skenuojančio zondo mikroskopijos metodais." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20101001_150411-33373.

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Kryptingas kietojo kūno darinių, naudojamų išorinio dujų poveikio detekcijai, savybių keitimas yra vienas iš aktualiausių uždavinių, sprendžiamų kuriant lakiųjų cheminių junginių poveikio atpažinimo ir matavimo sistemas. Šias savybes lemia darinių medžiaga, jų struktūra bei sąveikos su dujine aplinka ypatumai, kurie hibridiniuose dariniuose iš kietojo kūno ir biomolekulių gali būti lemiami dar ir biocheminiu atpažinimu. Šiame darbe tiriami dujoms jautrūs hibridiniai dariniai ir nanosistemos, integruotos metalo oksido plėvelėse, Skenuojančio zondo mikroskopijos (SZM) metodais. Disertacijoje sus

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Mentz, Wayne. "Novel sulfanyl- and sulfinylcaffeine analogues as inhibitors of monoamine oxidase / Wayne Mentz." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9521.

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Parkinson’s disease (PD) is a neurodegenerative disorder, which is progressive in nature and usually associated with the elderly. It is the second most common age-related neurodegenerative disorder after Alzheimer’s disease (AD). PD occurs when there is a dramatic loss of dopamine (DA) in the striatum, a substructure of the basal ganglia, of the brain due to the degeneration of the nigrostriatal pathway that contains the dopaminergic neurons. Motor symptoms of PD include bradykinesia, muscular rigidity and resting tremors. Non-motor symptoms include speech and sleep problems, hallucinations an

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Gerber, Gezina Susanna Fredrika Wilhelmina. "Stability and clinical efficacy of honeybush extracts in cosmeceutical product." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9023.

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The progression of skin ageing in individuals is multifaceted and provoked by various aspects, including hereditary and a variety of environmental causes, for instance UV (ultra violet) radiation, resulting in the morphological modifications in the dermal layer of the skin (Makrantonaki & Zouboulis, 2007:40) Transformations caused by ageing skin, in which degenerative alterations exceed regenerative alterations are recognised by the thinning and wrinkling of the epidermis in conjunction with the appearance of lines, creases, crevices and furrows, particularly emphasised in lines of facial expr

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Venter, Telanie. "Characterisation, toxicology and clinical effects of crocodile oil in skin products / by Telanie Venter." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9234.

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Natural oils are regularly used in cosmetics and as treatment for numeral skin conditions (Nielsen, 2006:575). The natural products industry is a multibillion dollar industry and has grown tremendously over the past few years. Natural oils used in cosmetics contain a range of fatty acids which contribute to several valuable properties in cosmetic- and personal care products. Fatty acids are divided into saturated acids and unsaturated acids (Vermaak et al., 2011:920,922). Because of the popularity and wide diversity of skin care products, it is necessary to create products that will distingui

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Matulaitienė, Ieva. "Vibrational spectroscopic study on the structure and interaction with solution components of monolayers with pyridinium functional group adsorbed on metal surface." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20140106_111636-29216.

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Self-assembled monolayers provide possibility of changing metal surface properties in controllable manner and are widely used in studies of electron transfer, construction of (bio)sensors, and biotechnological and photoelectronic processes. Positively charged monolayers are valuable in development of sensors for anions and (bio)technological processes with adsorbed negatively charged macromolecules. In this work the structural and functional properties of monolayer formed from synthesized molecule with terminal thiol and pyridinium groups have been studied. The main tasks were to assess the st

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Matulaitienė, Ieva. "Adsorbuotų ant metalo paviršiaus monosluoksnių su piridinio funkcine grupe struktūros ir sąveikos su tirpalo komponentais tyrimas virpesinės spektroskopijos metodais." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20140106_111621-82209.

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Savitvarkiai monosluoksniai suteikia metalų paviršiams norimas savybes ir plačiai taikomi elektronų pernašos tyrimuose, konstruojant (bio)jutiklius, biotechnologinius bei fotoelektroninius procesus. Teigiamo krūvio monosluoksniai naudojami kuriant anijonų jutiklius ir (bio)technologinius procesus su adsorbuotomis neigiamo krūvio makromolekulėmis. Darbe buvo susintetinta bifunkcinė molekulė su galinėmis tiolio ir piridinio grupėmis, suformuotas monosluoksnis ir ištirtos jo struktūrinės ir funkcinės savybės. Pagrindiniai darbo tikslai buvo ištirti N-(6-merkapto)heksilpiridinio (MHP) adsorbuoto a

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Dušan, Bugarin. "Antioksidantni, antibakterijski i antimutageni potencijal vrste Myrtus communis L. iz Crne Gore." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2010. http://dx.doi.org/10.2298/NS20100608BUGARIN.

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Ispitivanja hemijskog sastava etarskih ulja iekstrakata izvedena su na vrsti Myrtus communisL. sa pet lokaliteta iz Crne Gore. Pored toga,ispitana je njihova antioksidantna aktivnost urazlicitim in vitro sistemima kako bi se utvrdiouticaj pomenutih ekstrakata i etarskih ulja naneutralizaciju DPPH, NO, OH i 2- radikala, kaoi njihov uticaj na lipidnu peroksidaciju ulipozomima i inhibiciju enzima ksantin-oksidaze.Takode, ispitana je i antibakterijska aktivnostetarskih ulja i ekstrakata ove vrste na 9bakterijskih sojeva, kao i njihov antimutagenipotencijal na bakterijskom soju Escherichia coliIC 2

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Pretorius, Corlea. "Antioxidant properties of Lippia javanica (Burm.f.) Spreng. / C. Pretorius." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4726.

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The evolution of aerobic metabolic processes unavoidably led to the production of reactive oxygen species (ROS). ROS have the ability to cause harmful oxidative damage to biomolecules. Increased ROS generation and subsequent oxidative stress have been associated with aging and neurodegenerative disorders such as Parkinson’s and Alzheimer’s diseases as a result of the extreme sensitivity of the central nervous system to damage from ROS. Antioxidant defence systems have co–evolved with aerobic metabolic processes to counteract oxidative damage inflicted by ROS. The impact of neurodegenerative di

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Jasmina, Anojčić. "Voltametrijske metode zasnovane na primeni jednostavnih i savremenih elektroda/senzora na bazi ugljeničnih materijala za određivanje vodonik-peroksida u odabranim uzorcima." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107685&source=NDLTD&language=en.

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Cilj  ove  doktorske  disertacije  je  bio  razvoj  brzih  i  pouzdanih  voltametrijskih  metoda zasnovanih na primeni jednostavnih i savremenih elektroda/senzora na bazi ugljeničnih materijala (ugljenične  paste  napravljene  od  grafitnog  praha  i  parafinskog  ulja  i  &scaron;tampanih  ugljeničnih elektroda)  za  određivanje  H <sub>2</sub>O<sub>2 </sub>u  odabranim  složenim  model  i  realnim  uzorcima.  U  tu  svrhu, i

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Siemens, Hester. "Oksidasie van suikers en aromatiese verbindings met dimetieldioksiraan." Thesis, 2014. http://hdl.handle.net/10210/10195.

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M.Sc. (Chemistry)<br>The aim of this study was to investigate the oxidation of aromatic compounds and benzylidene acetals with dimethyldioxinne. Dimethyldioxirane, either by Insitu preparation or in the isolated form, has shown remarkable reactivity. This oxidant is effective in oxygen transfer, readily prepared from commercial materials and reacts under mild conditions. Quinones are natural materials with biological activity and some are key intermediates in the synthesis of medicines. A well-known method for the preparation of quinones, is the oxidation of phenols and aromatic ethers. The ox

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Dixon, John Thomas. "Die gebruik van dimetieldioksiraan vir die selektiewe oksidasie van koolwaterstowwe." Thesis, 2014. http://hdl.handle.net/10210/9247.

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M.Sc. (Chemistry)<br>This study was directed towards the investigation of oxidations by dimethyldioxirane, a new and versatile oxidant. To begin, the oxidation of various simple saturated hydrocarbons was examined. These oxidations gave alcohols in yields that varied considerably. This investigation showed that dimethyldioxirane reacts chemoselectively and that a preference is shown for tertiary C-H bonds and even more so for tertiary cis C-H bonds in bicyclic six-membered ring compounds and tertiary benzylic C-H bonds. A kinetic study of the oxidations of benzylic C-H bonds of various cumene

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Young, Adri. "'n Vergelykende studie tussen Pt en Pd vir die elektro-oksidasie van waterige SO₂ asook ander model elektrochemiese reaksies / Adri Young." Thesis, 2014. http://hdl.handle.net/10394/12104.

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The pressure on clean and sustainable energy supplies is increasing. In this regard energy conversion by electrochemical processes plays a major role, for both fuel cell reactions and electrolysis reactions. The sulphur dioxide oxidation reaction (SOR) is a common reaction found in the Hybrid Sulphur Cycle (HyS) and the HyS is a way to produce large-scale hydrogen (H2). The problem with the use of the HyS and fuel cells is the cost involved as large amounts of Pt are required for effective operation. The aim of the study was to determine whether there was an alternative catalyst which was more

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Ceustermans, Candice. "Taxonomical study of predatory and plant-parasitic mites associated with South African Solanaceae / Candice Ceustermans." Thesis, 2015. http://hdl.handle.net/10394/14485.

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Plant-feeding mites represent major pests in agriculture that are of importance to crops world-wide, as large populations of mites reduce the quality and quantity of yields. Alternatives to the use of pesticides are needed due to their negative effects and bio-control agents (predatory mites) remain advantages as they suppress spider mites and other plant pests. This study aims to determine species status of plant-feeding and predatory mites on plants of the family Solanaceae and to apply morphological and molecular data to determine phylogenetic relationships among economically important Phyt

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