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| 1 | Kinetics of FeSe_2 oxidation by ferric iron and its reactivity compared with FeS_2显示文摘The mobility and bioavailability of selenium is a major health and environmental issue and a main concern for geological disposal of high-level radioactive waste. Chemically and/or microbially mediated oxidation of insoluble Se-bearing particulate, such as iron selenides, to dissolved and mobile phases controls the transport and distribution of Se in the environment. The oxidation of ferroselite(FeSe2) by ferric iron was investigated in anoxic conditions. The redox reaction can be represented by: FeSe2 + 2Fe3+ = 2Se0 + 3Fe2+. Kinetic studies indicated that the reaction can be described by second-order rate law, with rate constants of 0.49±0.01, 0.85±0.02, 1.84±0.04, and 3.29±0.13 L mol-1 s-1 at pH 1.62, 1.87, 2.23, and 2.49, respectively. The positive correlation between reaction rate and pH implies that diffusion of Fe3+ oxidant to the mineral surface is the rate-determining step. The strong reactivity of FeSe2 towards Fe3+ suggests that ferric iron may play a significant role in FeSe2 oxidation process(e.g., by Se4+, O2, etc.) and Se0 should be the first reaction product. Also, it was shown that the reduction rate of Fe3+ or Se4+ by pyrite(FeS2) can be significantly increased in the presence of FeSe2, suggesting a stronger reactivity of FeSe2 compared with pyrite. The results obtained extend our knowledge about the subtle interaction between Se, pyrite and iron selenides in the environment, and give insight into the transfer of selenium from iron selenides to bio-available selenium(i.e., selenite and selenate) in the Se-rich environment. | MA Bin NIE Zhe LIU ChunLi KANG MingLiang BARDELLI Fabrizio CHEN FanRong CHARLET Laurent | 2014 | Science China Chemistry2014，57，9： | 3 |
| 2 | Direct anterior approach hip arthroplasty:How to reduce complications-A 10-years single center experience and literature review显示文摘BACKGROUND The direct anterior approach for total hip arthroplasty(DAA-THA)is increasing in popularity due to some advantages such as less surgical trauma,minimal dissection of soft tissues,shorter rehabilitation times,faster return to daily activities,lower incidence of dislocation.On the other hand,the literature reports a high rate of intraoperative complications,with many different rates and complication types in the published papers.AIM To analyze our complications comparing results with the literature;to report measures that we have taken to reduce complications rate.METHODS All DAA-THA patients with one year minimum follow up who were operated at a single high-volume centre,between January 2010 and December 2019 were included in this retrospective study.All surgeries were performed using cementless short anatomical or straight stems and press fit cups.Patients’followup was performed,at 6 wk,3 mo,then annually post-surgery with clinical and radiological evaluation.Primary outcomes were stem revision for aseptic loosening and all-cause stem revision.Second outcome was intra-operative and post-operative complications identification.RESULTS A total of 394 patients underwent DDA-THA from January 2010 and December 2019,for a total of 412 hips;twelve patients lost to follow-up and one patient who died from causes not related to surgery were excluded from the study.The average age at the time of surgery was 61 years(range from 28 to 78 years).Mean follow-up time was 64.8 mo(range 12-120 mo).Seven stems were revised.One cortical perforation,one trochanteric and lateral cortical wall intraoperative fracture,one diaphyseal fracture,three clinically symptomatic early subsidence and one late aseptic loosening.We also observed 3 periprosthetic fractures B1 according to the Vancouver Classification.Other minor complications not requiring stem revision were 5 un-displaced fractures of the calcar region treated with preventive cerclage,one early infection,one case of late posterior dislocation,18 case of asymptomatic stem subsidence,6 cases of lateral cutaneous femoral nerve dysesthesia.CONCLUSION DAA is associated to good outcomes and lower incidence of dislocation.Complication rate can be reduced by mindful patient selection,thorough preoperative planning,sufficient learning curve and use of intraoperative imaging. | Fabrizio Rivera Luca C Comba Alessandro Bardelli | 2022 | World Journal of Orthopedics2022，13，4： | 2 |
| 3 | PRL-3 expression in metastatic cancers 显示文摘 | BARDELLI A SAHA S SAGER J A | 2003 | Clinical Cancer Research2003，9，15： | 1 |
| 4 | High frequency of mutations of the PIK3CA gene in human cancers显示文摘 | SAMUES Y WANG Z BARDELLI A | 2004 | Science2004，304，5670： | 1 |
| 5 | A phosphatase associated with metastasis of colorectal cancer显示文摘 | Saha S Bardelli A Buckhaults P | 2001 | Science2001，294，： | 1 |
| 6 | High frequency of mutations of the PIK3CA gene in human cancers显示文摘 | Samuels Y Wang Z Bardelli A | | 0，，： | 1 |
| 7 | Changes in the expression of the glutamate transporter EAAT3/EAAC1 in health and disease 显示文摘 | BIANCHI M G BARDELLI D CHIU M | 2014 | Cellular and Molecular Life Sciences2014，71，11： | 1 |
| 8 | A phosphatase associated with metastasis of colorectal cancer显示文摘 | Saha S Bardelli A Buckhaults P | 2001 | Science2001，294，5545： | 1 |
| 9 | A multifunctional docking site mediates signaling and transformation by the hepatocyte growth factor/scatter factor receptor family显示文摘 | Ponzetto C Bardelli A Zhen Z | 1994 | Cell1994，77，2： | 1 |
| 10 | Tumorigenesis: RAF/RAS oncogenes and mismatch-repair status 显示文摘 | Rajagopalan H Bardelli A Lengauer C | 2002 | Nature2002，418，6901： | 1 |
| 11 | High frequency of muta- tions of the PIK3CA gene in human cancers显示文摘 | Samuels Y Wang Z Bardelli A | 2004 | Science2004，304，5670： | 1 |
| 12 | Macrophage-stimulating protein differently affects human alveolar macrophages from smoker and non-smoker patients:evaluation of respiratory burst,cytokine release and NF-kappaB pathway显示文摘 | Gunella G Bardelli C Amoruso A | | 0，，4： | 1 |
| 13 | Digital-sampling systems in high-resolution and wide dynamic-range energy measurements: Comparison with peak sensing ADCs 显示文摘 | Bardelli L Poggi G | 2006 | Nucl Instr and Meth2006，560，： | 1 |
| 14 | Receptor tyrosine kinases as therapeutic targets:the model of the MET oncogene显示文摘 | Longati P Comoglio PM Bardelli A | 2001 | Curr Drug Targets2001，2，： | 1 |
| 15 | A Phosphatase Associated with Metastasis of Colorectal Cancer 显示文摘 | Saha S Bardelli A Buckhaults P | 2001 | Science2001，294，： | 1 |
| 16 | High frequency of mutations of the PIK3CA gene in human cancers 显示文摘 | Samuels Y Wang Z Bardelli A | 2004 | Science2004，304，5670： | 1 |
| 17 | HGF receptor associates with the anti-apoptotic protein BAG-1 and prevents cell death显示文摘 | BARDELLI A LONGATI P GORUPPI S | 1996 | EMBO J1996，15，： | 1 |
| 18 | High frequency of mutations of the PIK3CA gene in human cancers 显示文摘 | Samuels Y Wang Z Bardelli A | 2004 | Science2004，304，5670： | 1 |
| 19 | A phosphatase associated with metastasis of colorectal cancer显示文摘 | Saha S Bardelli A Buckhaults P | 2001 | Science2001，294，5545： | 1 |
| 20 | A Phosphatase Associated with Metastasis of Colorectal Cancer显示文摘 | SAURABH SAHA ALBERTO BARDELLI PHILLIP BUCKHAULTS | 2001 | Science2001，294，5545： | 1 |
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