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A novel Fe/HNT visible light-driven heterogeneous photocatalyst:Development as a semiconductor and photocatalytic application

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Progress in Natural Science:Materials International 2022年第3期32卷 273-281页

作者： Gizem Basaran Dindas Derya Y.Koseoglu-Imer huseyin cengiz yatmaz Gebze Technical University Environmental Engineering Department Istanbul Technical University Environmental Engineering Department

Fe/HNT(Iron/Halloysite-nanotube) heterogeneous semiconductor catalysts operating effectively under visible light were developed by using FeCl3, FeSO4and Fe(OH)3sludge precipitated after electro-Fenton process and named as Fe/HNT-I, Fe/HNT-II and Fe/HNT-III, respectively. Chemical configuration and particle morphology of the catalysts were characterized with XRD, SEM-EDS and UV–vis DRS. Effect of the developed Fe/HNT photocatalysts was investigated for the degradation of Reactive Orange 16(RO16) textile dye under visible light. The photocatalytic decolorization of RO16 was 95.6%, 99.3% and 96.6%, respectively. It was found that the photocatalytic performance of Fe/HNT-III catalyst under visible light was effective compared to Fe/HNT-I and Fe/HNTII. The iron ratio in the catalyst’s structure(Fe:HNT ratio 0.25, 0.5 and 0.75(w/w)) and p H value(4, 7 and 9) in production phase were also changed to investigate the photocatalytic effect of Fe/HNT-III. An Fe:HNT ratio of 0.25 and a p H of 4 were determined as the optimum conditions for catalyst production. Optimum H2O2dosage value was also investigated for photocatalytic oxidation process and determined to be 10 m M. Finally, the optimum conditions were further used for the degradation of Terbinafine hydrochloride(Ter HCl) active drug and the treatment of wastewater from the textile and pharmaceutical industries.

关键词： Halloysite nanoclay Fe/HNT nanoparticle Catalyst Semiconductor Photocatalytic degradation Visible light

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Survival in gastric cancer in relation to postoperative adjuvant therapy and determinants

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World Journal of Gastroenterology 2015年第4期21卷 1222-1233页

作者： Sevgi Ozden Zerrin Ozgen Hazan Ozyurt cengiz Gemici Gokhan Yaprak huseyin Tepetam Alpaslan Mayadagli Radiation Oncology Dr. Lutfi Kirdar Kartal Training and Research Hospital34890IstanbulTurkey Faculty of Medicine Bezmialem Vakif University34093 IstanbulTurkey

AIM: To evaluate survival data in patients with gastric cancer in relation to postoperative adjuvant therapy and survival determinantsMETHODS: A total of 201 patients(mean ± SD age: 56.0 ± 11.9 years, 69.7% were males) with gastric carcinoma who were operated and followed up at Lutfi Kirdar Kartal Training and Research Hospital between 1998 and 2010 were included in this retrospective study. Follow up was evaluated divided into two consecutive periods(before 2008 and 2008-2010, respectively) based on introduction of 3-D conformal technique in radiotherapy at our clinic in 2008. Data on patient demographics, clinical and histopathological characteristics of gastric carcinoma and the type of treatment applied after surgery [postoperative adjuvant treatment protocols including chemoradiotherapy(CRT) and chemotherapy(CT), supportive therapy or follow up without any treatment] were recorded. The median duration and determinants of local recurrence free(LRF) survival, distant metastasis free(DMF) survival and overall survival were evaluated in the overall population as well as with respect to follow up years [1998-2008(n = 127) vs 2008-2010(n = 74)].RESULTS: Median duration for LRF survival, DMF survival and overall survival were 31.9, 24.1 and 31.9 mo, respectively in patients with postoperative adjuvant CRT. No significant difference was noted in median duration for LRF survival, DMF survival and overall survival with respect to treatment protocols in the overall population and also with respect to followed up periods. In the overall population, CT protocols FUFA [5-fluorouracil(400 mg/m2) and leucovorin-folinic acid(FA, 20 mg/m2)](29.9 mo) and UFT + Antre [a fixed combination of the oral FU prodrug tegafur(flouroprymidine, FT, 300 mg/m2 per day) with FA(Antrex?), 15 mg tablet, two times a day](42.5 mo) was significantly associated with longer LRF survival times than other CT protocols(P = 0.036), while no difference was noted between CT protocols in terms of DMF surviv

关键词： Gastric carcinoma Local recurrence free survival D

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Effect of autotransfusion system on tumor recurrence and survival in hepatocellular carcinoma patients

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World Journal of Gastroenterology 2013年第10期19卷 1625-1631页

作者： Sami Akbulut Cuneyt Kayaalp Mehmet Yilmaz Volkan Ince Dincer Ozgor Koray Karabulut cengiz Eris huseyin Ilksen Toprak Cemalettin Aydin Sezai Yilmaz Division of Liver Transplantation Institute Department of SurgeryInonu University Faculty of Medicine44280 MalatyaTurkey Department of Anesthesiology Inonu University Faculty of Medicine44280 MalatyaTurkey

AIM:To investigate the therapeutic efficacy and safety of continuous autotransfusion system(CATS) during liver transplantation of hepatocellular carcinoma ***:Eighty-three hepatocellular carcinoma(HCC) patients who underwent liver transplantation with intraoperative CATS(n = 24,CATS group) and without(n = 59,non-CATS group) between April 2006 and November 2011 at the Liver Transplant Institute of Inonu University were analyzed *** HCC recurrence was monitored by measuring alpha-fetoprotein(AFP) levels at 3-mo intervals and performing imaging analysis by thoracoabdominal multidetector computed tomography at 6-month ***-group differences in recurrence and correlations between demographic,clinical,and pathological data were assessed by ANOVA and χ 2 *** and disease-free survivals were calculated by the univariate Kaplan-Meier ***:Of the 83 liver transplanted HCC patients,89.2% were male and the overall mean age was 51.3 ± 8.9 years(range:18-69 years).The CATS and nonCATS groups showed no statistically significant differences in age,sex ratio,body mass index,underlying disease,donor type,graft-to-recipient weight ratio,Child-Pugh and Model for End-Stage Liver Disease scores,number of tumors,tumor size,AFP level,Milan and University of California San Francisco selection criteria,tumor differentiation,macrovascular invasion,median hospital stay,recurrence rate,recurrence site,or mortality *** mean follow-up time of the nonCATS group was 17.9 ± 12.8 mo,during which systemic metastasis and/or locoregional recurrence developed in 25.4% of the *** mean follow-up time for the CATS group was 25.8 ± 15.1 mo,during which systemic metastasis and/or locoregional recurrence was detected in 29.2% of the *** was no significant difference between the CATS and non-CATS groups in recurrence rate or ***,no significant differences existed between the groups in overall or disease-f

关键词： Liver transplantation Hepatocellular carcinoma Intraoperative blood salvage autotransfusion Recurrence Tumor cell dissemination

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