Serum and peritoneal fluid levels of ischemia modified albumin in moderate/severe endometriosis

Background: Recently, the role of oxidative stress in progression of endometriosis has been reported. Ischemia-modified albumin (IMA) is a marker of protein oxidation and very limited number of studies has evaluated the role of IMA in endometriosis. This study was designed to evaluate the serum and peritoneal fluid IMA levels in moderate/severe endometriosis as a marker for oxidative stress.Methods: This study was designed as a prospective controlled clinical trial. The study group consisted of 35 cases who underwent laparoscopy and with a diagnosis of moderate/severe endometriosis. The control group (n=35) was cases without endometriosis that underwent laparoscopy for tubal sterilization. The serum and peritoneal fluid IMA levels were measured spectrophotometrically by colorimetric method with complex of albumin non-binding cobalt and dithioerthreitol.Results: Although the median serum IMA levels in study and control groups were similar (p=0.553), the levels of peritoneal fluid IMA were significantly higher in study group (p=0.044). In endometriosis cases with dysmenorrhea peritoneal fluid IMA levels were much higher than cases without dysmenorrhea (p=0.018).Conclusions: The increased levels of IMA in peritoneal fluid of endometriosis support the possible role of oxidative stress in endometriosis. With this study, peritoneal fluid IMA levels are initially documented in endometriosis cases

Spectrophotometric determination of Hg(II) in water samples by dispersive liquid liquid microextraction with use ionic liquid after derivatization with a water soluble Fe(II) phthalocyanine

Caglar, Yasemin/0000-0001-8462-0925; Biyiklioglu, Zekeriya/0000-0001-5138-214XWOS: 000427292800009This study reports the synthesis of water soluble iron(II) phthalocyanine and a facile method for spectrophotometric determination of Hg(II) in environmental water samples by ionic liquid based dispersive liquid-liquid microextraction (IL-DLLME). In the method, 1-heptyl-3-methylimidazolium hexafluorophosphate (250 A mu L) as extraction solvent, acetonitrile (750 A mu L) as dispersive solvent and Triton X-100 (200 A mu L) as anti-sticking agent were used. After the extraction of the Hg(II) complex (Hg(II):q-Fe(II)-Pc) into thin droplets of ionic liquid, the sample was centrifuged for 4 min at 2000 rpm. The upper aqueous phase was removed and the residue diluted to 250 A mu L with methanol and transferred to a 250 A mu L cell for spectrophotometric detection at 280 nm. The linear range of the method is 0.05-1 A mu g/mL. The limits of detection and quantification is 0.01 and 0.03 A mu g/mL, respectively. The RSD for the developed method was calculated as 0.78% at 0.50 A mu g/mL Hg(II).Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [115Z076]We are grateful for the financial support of the Scientific and Technological Research Council of Turkey (TUBITAK). Grant Number: 115Z076

XPS Studies of Electrodeposited Grown F-Doped ZnO Rods and Electrical Properties of p-Si/n-FZN Heterojunctions

The chemical composition of the electrodeposited undoped and F-doped ZnO (FZN) rods was investigated by X-ray photoelectron spectroscopy (XPS). These results confirmed the existence of F as a doping element into ZnO crystal lattice. The p-Si/n-ZnO and p-Si/n-FZN heterojunction diodes were fabricated and their electrical properties were investigated. Some parameters belong to these diodes such as ideality factor (n), barrier height (ϕB), and series resistance (Rs) which were calculated from the current-voltage (I-V) curves that exhibited rectifying behavior by using thermionic emission theory, Norde’s function, and Cheung’s method. There is a good agreement between the diode parameters obtained from different methods

Influence of Irradiation Time on Structural, Morphological Properties of ZnO-NRs Films Deposited by MW-CBD and Their Photodiode Applications

Microwave-assisted chemical bath deposition (MW-CBD) was used to deposit zinc oxide nanorods (ZnO-NRs) films by using different microwave irradiation time. The films exhibit a good crystallinity having a hexagonal wurtzite phase formation. Although the dominant preferred orientation was not observed for the ZnO-5 and ZnO-10, ZnO-8 showed (002) preferred orientation. The emission scanning electron microscope (FESEM) showed almost randomly oriented hexagonal nanorods on the surface. A slight decrease in the length of the observed hexagonal nanorods due to the increase in the irradiation time was observed, changing from 550 nm to 300 nm. The p-Si/n-ZnO-NRs heterojunction photodiodes were fabricated. The current-voltage characteristics of these photodiodes were investigated under dark and different illumination intensity. An increase in the reverse current with increasing illumination intensity confirmed that the fabricated photodiodes exhibited a photoconducting behavior. In addition, the barrier height and series resistance values of the photodiodes were determined from capacitance-voltage measurements

Preparation of nanostructure ZnO: La film by low-cost solgel method and determination of diode parameters of p-Si/n-ZnO: La heterojunctions

Zinc oxide (ZnO) is widely used in solar cells, gas sensors, photodetectors due to its unique properties, inexpensive, high transmittance and wide optical band gap. These properties make it good candidate as host materials for the UV-vis emission of various rare earth (RE) elements. So, RE elements doped ZnO films have been increasingly taking an important role in optoelectronics and photonics. In this study, La doped ZnO (ZnO:La) films were prepared by the low-cost sol gel method using the spin coating technique. The crystalline structure and surface morphology of the films were analyzed by using an X-ray diffractometer and a field emission model scanning electron microscopy, respectively. The p-Si/n-ZnO: La heterojunction structures were fabricated. In order to characterize the electrical behavior of thesestructures, the current-voltage (I-V) characteristics were performed. It was observed that all of them showedgood rectifying behavior.The diode parameters were determined by using different methods

New Co(II) and Cu(II) Phthalocyanine Catalysts Reinforced by Long Alkyl Chains for the Degradation of Organic Pollutants

Caglar, Yasemin/0000-0001-8462-0925WOS: 000401466600020The need to develop sustainable, low-cost, earth abundant catalyst is becoming paramount for overcoming environmental problems. Toward this goal, new cobalt(II) and copper(II) phthalocyanine complexes used as catalyst for degradation of organic pollutants (such as 2,3-dichlorophenol, 4-methoxyphenol, 4-nitrophenol, 2,3,6-trimethylphenol) with different oxygen source. This catalytic system with these complexes showed high conversion rates for degradation of organic pollutants and could easily be recovered by recycling reactions.Research Fund of Karadeniz Technical University, Trabzon-TurkeyKaradeniz Teknik University [5369]This study was supported by the Research Fund of Karadeniz Technical University, (Project no: 5369), Trabzon-Turkey