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| 1 | Ciprofloxacin degradation in photo-Fenton and photo-catalytic processes: Degradation mechanisms and iron chelation显示文摘Ciprofloxacin(CIP)is a broad spectrum synthetic antibiotic drug of fluoroquinolones class.CIP can act as a bidentate ligand forming iron complexes during its degradation in the photoFenton process(PFP).This work investigates on PFP for the degradation of CIP to understand the formation mechanism and stability of iron complexes under ultraviolet(UV)-light illumination.A comparison was made with the UV-photocatalysis(UV/TiO_2)process where CIP doesn't form a complex.In PFP,the optimal dose of Fe^(2+)and H_2O_2were found to be 1.25 and10 mmol/L with pH of 3.5.An optimal TiO_2dose of 1.25 g/L was determined in the UV/TiO_2process.Maximum CIP removal and mineralization efficiency of 93.1%and 47.3%were obtained in PFP against 69.7%and 27.6%in the UV/TiO_2process.The mass spectra could identify seventeen intermediate products including iron-CIP complexes in PFP,and only seven intermediate products were found in the UV/TiO_2process with a majority of common products in both the processes.The proposed mechanism supported by the mass spectra bridged the routes of CIP cleavage in the PFP and UV/TiO_2process,and the decomposition pathway of Fe^(3+)-CIP chelate complexes in PFP was also elucidated.Both in PFP and UV/TiO_2processes,the target site of HO~·radical attack was the secondary-N atom present in the piperazine ring of the CIP molecule.The death of Escherichia coli bacteria was 55.7%and 66.8%in comparison to the control media after 45 min of treatment in PFP and UV/TiO_2process,respectively. | Ardhendu Sekhar Giri Animes Kumar Golder | 2019 | Journal of Environmental Sciences2019，31，6： | 5 |
| 2 | Demographic determinants of risk,colon distribution and density scores of diverticular disease显示文摘AIM:To investigate associations between ethnicity,age and sex and the risk,colon distribution and density scores of diverticular disease(DD).METHODS:Barium enemas were examined in 1000 patients:410 male,590 female;760 whites,62 Asians,44 black africans(BAs),and 134 other blacks(OBs).Risks and diverticula density of left-sided DD(LSDD) and rightsided-component DD(RSCDD = right-sided DD + right and left DD + Pan-DD) were compared using logistic regression.RESULTS:Four hundred and forty-seven patients had DD(322 LSDD and 125 RSCDD).Adjusted risks:(1) LSDD:each year increase in age increased the odds by 6%(95% CI:5-8,SE:0.8%,P < 0.001);Asians:odds ratio(OR):0.23(95% CI:0.10-0.53,SE:0.1,P ≤ 0.001) and OBs:OR:0.25(95% CI:0.14-0.43,SE:0.07,P ≤ 0.001) appeared protected vs Whites;(2) RSCDD:each year increase in age increased the odds by 4%(95% CI:2-6,SE:1%,P < 0.001);females were 0.60 times(95% CI:0.40-0.90,SE:0.12,P = 0.01) less likely than males to have RSCDD;BAs were 3.51 times(95% CI:1.70-7.24,SE:1.30,P < 0.001) more likely than Whites to have RSCDD;and(3) DD density scores:each year increase in age increased the odds of highdensity scores by 4%(95% CI:1-6,SE:1%,P < 0.001);RSCDD was 2.77 times(95% CI:1.39-3.32,SE:0.67,P < 0.001) more likely to be of high density than LSDD.No further signif icant differences were found in the adjusted models.CONCLUSION:Right colonic DD might be more common and has higher diverticula density in the west than previously reported.BAs appear predisposed to DD,whereas other ethnic differences appear conserved following migration. | Mark Golder Irina Chis Ster Pratusha Babu Amita Sharma Muhammad Bayat Abdulkadir Farah | 2011 | World Journal of Gastroenterology2011，17，8： | 4 |
| 3 | New flexible endoscopic controlled stapler technique for the treatment of Zenker's diverticulum:A case series显示文摘AIM To report about the combination and advantages of a tapler-assisted diverticulotomy performed by flexible endoscopy.METHODS From November 2014 till December 2015 17 patients(8 female, 9 male, average age 69.8 years) with a symptomatic Zenker diverticulum(mean size 3.5 cm) were treated by inserting a new 5 mm fully rotatable surgical stapler(Micro Cutter30 Xchange, Cardica Inc.) next to an ultrathin flexible endoscope through an overtube. The Patients were under conscious sedation with the head reclined in left position, the stapler placed centrally and pushed forward to the bottom of the diverticulum. The septum was divided by the staple rows under flexible endoscopic control.RESULTS In eleven patients(64.7%) the stapler successfully divided the septum completely. Mean procedure time was 21 min, medium size of the septum was 2.8 cm(range 1.5 cm to 4 cm). In four patients the septum was shorter than 3 cm, in seven longer than 3 cm. To divide the septum, averagely 1.3 stapler cartridges were used. Two minor bleedings occurred. Major adverse events like perforation or secondary haemorrhage did not occur. After an average time of two days patients were discharged from the hospital. In 6 patients(35.3%) the stapler failed due to a thick septum or insufficient reclination of the head. Follow up endoscopy was performed after an average of two months in 9 patients; 4 patients(44.4%) were free of symptoms, 5 patients(55.6%) stated an improvement. A relapse of symptoms did not occur. CONCLUSION Flexible endoscopic Zenker diverticulotomy by using a surgical stapler is a new, safe and efficient treatment modality. A simultaneously tissue opening and occlusion prevents major complications. | Johanna Wilmsen Robert Baumbach Dietmar Stüker Vincens Weingart Frank Neser Stefan Karl Golder Christof Pfundstein Ellen Claudia Notzel Thomas Rosch Siegbert Faiss | 2017 | World Journal of Gastroenterology2017，23，17： | 2 |
| 4 | Densifications trategies for high endurance P/M components 显示文摘 | JONES P GOLDER K B LAWCOCK R | 1997 | Inter J Powder Metall1997，33，3： | 1 |
| 5 | The structure of collabo- rative tagging systems 显示文摘 | Golder S A Huberman B A | 2006 | Journal of Information Science2006，32，2： | 1 |
| 6 | Usage Patterns of Collaborative Tagging Systems显示文摘 | Golder S A Huberman B A | 2006 | Journal of Information Science2006，32，2： | 1 |
| 7 | Usage patterns of collaborative tagging systems显示文摘 | Golder S A Huberman B A | | 0，，02： | 1 |
| 8 | Usage patterns of collaborative tagging systems显示文摘 | Golder S A Huberman B A | 2006 | Journal of Information Science2006，32，2： | 1 |
| 9 | Recovery of phrenic activity and ventilation after cervical spinal hemisection in rats 显示文摘 | Fuller DD Golder FJ Olson EB Jr | 2006 | J Appl Physiol2006，3，： | 1 |
| 10 | Removal of trivalent chromium by electrocoagulation显示文摘 | Golder A K Samanta A N | 2007 | Separation and Durification Technology2007，53，1： | 1 |
| 11 | Usage patterns of collaborative tagging systems 显示文摘 | Golder S Huberman B A | 2006 | Journal of Information Science2006，32，2： | 1 |
| 12 | The Structure of Collaborative Tagging Systems显示文摘 | Golder Scott A Bernardo A Huberman | | 0，，02： | 1 |
| 13 | Pioneer advantage:marketing logic or marketing legend显示文摘 | GOLDER P.N G.J.TELLIS | | 0，，02： | 1 |
| 14 | Rutschverzo¨gerungen von vollverkleideten Motorra¨dern显示文摘 | Golder M Becke M | | 0，，： | 1 |
| 15 | Usage patterns of collaborative tagging systems显示文摘 | Golder S A Huberman B A | 2006 | Journal of Information Science2006，32，2： | 1 |
| 16 | The effectiveness and cost-effectiveness of prophylactic removal of wisdom teeth显示文摘 | Song F O'Meara S Wilson P Golder S Kleijnen J | 2000 | Health Technology Assessment2000，4，15： | 1 |
| 17 | Deconstructing the pioneer's advantage: Examining vintage effects and consumer valuations of quality and variety显示文摘 | Bohlmann J D Golder P N Mitra D | 2002 | Management Science2002，48，9： | 1 |
| 18 | Understanding Interaction Models: Improving Empirical Analyses显示文摘 | THOMAS B WILLIAM C GOLDER M | 2006 | Po- litical Analysis2006，14，1： | 1 |
| 19 | First to Market, First to Fail? Real Causes of Enduring Market Leadership 显示文摘 | Tellis G J Golder P N | 1996 | Sloan Management Review1996，37，： | 1 |
| 20 | Color-coded dupldx ultra- sound compared to CT angiography for detection and quantification of carotid artery stenosis显示文摘 | Belsky M Gaitini D Golder D | 2000 | Eur J Ultrasound2000，12，1： | 1 |
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