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| 1 | A study on relationship of nitric oxide,oxidation,peroxidation,lipoperoxidation with chronic cholecystitis显示文摘AIM To study relationship of injury induced bynitric oxide,oxidation,peroxidation,lipoperoxidation with chronic cholecystitis.METHODS The values of plasma nitric oxide(P-NO),plasma vitamin C(P-VC),plasma vitamin E(P-VE),plasma β-carotene(P-β-CAR),plasmalipoperoxides(P-LPO),erythrocyte superoxidedismutase(E-SOD),erythrocyte catalase(E-CAT),erythrocyte glutathione peroxidase(E-GSH-Px)activities and erythrocyte lipoperoxides(E-LPO)level in 77 patients with chronic cholecystitisand 80 healthy control subjects were determined,differences of the above average values betweenthe patient group and the control group anddifferences of the average values betweenpreoperative and postoperative patients wereanalyzed and compared,linear regression andcorrelation of the disease course with the abovedetermination values as well as the stepwiseregression and correlation of the course with thevalues were analyzed.RESULTS Compared with the control group,theaverage values of P-NO,P-LPO,E-LPO weresignificantly increased(P<0.01),and of P-VC, P-VE,P-β-CAR,E-SOD,E-CAT and E-GSH-Pxdecreased(P<0.01)in the patient group.Theanalysis of the linear regression and correlationshowed that with prolonging of the course,thevalues of P-NO,P-LPO and E-LPO in the patientswere gradually ascended and the values of P-VC,P-VE,P-β-CAR,E-SOD,E-CAT and E-GSH-Pxdescended(P<0.01).The analysis of thestepwise regression and correlation indicated thatthe correlation of the course with P-NO,P-VE andP-β-CAR values was the closest.Compared withthe preoperative patients,the average values of P-NO,P-LPO and E-LPO were significantlydecreased(P<0.01)and the average values of P-VC,E-SOD,E-CAT and E-GSH-Px in postoperativepatients increased(P<0.01)in postoperativepatients.But there was no significant difference inthe average values of P-VE,P-β-CAR preoperativeand postoperative patients.CONCLUSION Chronic cholecystitis could inducethe increase of nitric oxide,oxidation,peroxidation and lipoperoxidation. | Jun Fu Zhou Dong Cai You Gen Zhu Jin Lu Yang Cheng Hong Peng Yang Hai Yu | 2000 | World Journal of Gastroenterology2000，6，4： | 36 |
| 2 | Green chemistry of chromate cleaner production显示文摘Research topics and methods of green chemistry in chromate production are introduced in this paper . New original green chemical process of the heterogeneous reaction and separation system of liquid phase oxidation of chromite in molten salt of sodium hydroxide-one way separation in high concentration medium-metastable phase separation-carbonate recycle conversion has been developed. The green commercial process for comprehensive utilization of mineral resources-reactant recycle inside the process-zero emission was established . | 张懿 李佐虎 齐涛 王志宽 郑诗礼 | 1999 | Chinese Journal of Chemistry1999，17，3： | 27 |
| 3 | Treatment technologies for aqueous perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA)显示文摘Fluorochemicals(FCs)are oxidatively recalcitrant,environmentally persistent,and resistant to most conventional treatment technologies.FCs have unique physiochemical properties derived from fluorine which is the most electronegative element.Perfluorooctanesulfonate(PFOS),and perfluorooctanoate(PFOA)have been detected globally in the hydrosphere,atmosphere and biosphere.Reducing treatment technologies such as reverses osmosis,nano-filtration and activated carbon can remove FCs from water.However,incineration of the concentrated waste is required for complete FC destruction.Recently,a number of alternative technologies for FC decomposition have been reported.The FC degradation technologies span a wide range of chemical processes including direct photolysis,photocatalytic oxidation,photochemical oxidation,photochemical reduction,thermally-induced reduction,and sonochemical pyrolysis.This paper reviews these FC degradation technologies in terms of kinetics,mechanism,energetic cost,and applicability.The optimal PFOS/PFOA treatment method is strongly dependent upon the FC concentration,background organic and metal concentration,and available degradation time. | Chad D.VECITIS Hyunwoong PARK Jie CHENG Brian T.MADER Michael R.HOFFMANN | 2009 | Frontiers of Environmental Science & Engineering2009，3，2： | 26 |
| 4 | DEVELOPMENT OF INCONEL~ ALLOY 783,A LOW THERMAL EXPANSION,CRACK GROWTH RESISTANT SUPERALLOY显示文摘DEVELOPMENTOFINCONEL~ALLOY783,ALOWTHERMALEXPANSION,CRACKGROWTHRESISTANTSUPERALLOYJ.H.Thndermann(IncoAlloysInternational,Inc.... | J.H.Thndermann(Inco Alloys International, Inc., Huntington, WV 25705, USA ) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，6： | 23 |
| 5 | Mitochondrial ROS promote macrophage pyroptosis by inducing GSDMD oxidation显示文摘Disrupted mitochondrial membrane potential (MMP) and reactive oxygen species (ROS) generation are often associated with macrophage pyroptosis. It remains unclear how these forms of mitochondrial dysfunction relate to inflammasome activation and gasdermin-D (Gsdmd) cleavage, two central steps of the pyroptotic process. Here, we also found MMP collapse and ROS generation induced by Nlrp3 inflammasome activation as previous studies reported. The elimination of ROS alleviated the cleavage of Gsdmd, suggesting that Gsdmd cleavage occurs downstream of ROS release. Consistent with this result, hydrogen peroxide treatment augmented the cleavage of Gsdmd by caspase-1. Indeed, four amino acid residues of Gsdmd were oxidized under oxidative stress in macrophages. The efficiency of Gsdmd cleavage by inflammatory caspase-1 was dramatically reduced when oxidative modification was blocked by mutation of these amino acid residues. These results demonstrate that Gsdmd oxidation serves as a de novo mechanism by which mitochondrial ROS promote Nlrp3 inflammasome-dependent pyroptotic cell death. | Yufang Wang Peiliang Shi Qin Chen Zan Huang Dayuan Zou Jingzi Zhang Xiang Gao Zhaoyu Lin | 2019 | Journal of Molecular Cell Biology2019，11，12： | 23 |
| 6 | OXIDATION OF A TWO-PHASE Cu-75Cr ALLOY IN AIRAT 700-900℃显示文摘The cormsion in air of a two-phase Cu-75Cr alloy was studied at 700-900℃. Thealloy cormded nearly parabolically at 700-800℃, but at 900℃ its instantaneousparabolic mte constant decreased with time. The scales were complex and consistedof an outermost layer of copper oxide generally followed bg a layer of the double ox-ide Cu2 Cr2 O4 sometimes containing particles of unoxidized chromium surmunded bya chromia layer. An innermost layer of chromia was also observed in some cases.Finally metallic copper was al8o frequently mixed with chromia particles. No Cr de-pletion was observed in the alloy close to the inteffoce with the scale. In any case,this alloy was not able to form an exclusive continuous protective chromia layer. Thespecial cormsion behavior Of this alloy is typical of two-phase binary systems with alange solubility gaP in which the outwaof dthesion fiux of the most-reactive componentin the alloy is strongly reduced and may be inswncient to fOrm a protective externallayer of the cormsponding oxide. In paTticular, the presence of particles of Cr withina double oxide layer is very unusual and is allowed only for the kinetic reason. | F. Gesmundo Y Niu F. Vianiand D.L. Douglass(Universita di Genova, Fiera del Mare, Pad. D,16129 Genova, Italy)(State Key Lab. for Corrosion and Protection, Institute of Corrosion and Protection of Metals, theChinese Academy of Sciences, Shenyang 110015, Ch | 1997 | Acta Metallurgica Sinica(English Letters)1997，10，4： | 21 |
| 7 | An Application of Microwave Pre-oxidation in Improving Gold Recovery of a Refractory Gold Ore显示文摘Microwave radiation was employed as a pretreating technology to oxidise a refractory gold ore. Heating characteristics showed that, in an identical microwave field, the bulk temperature of the sample increased with microwave power, microwave radiation time and particle size. The rate of sulphur removal increased with microwave radiation time. Particle size also had a significant effect on the oxidation rate. Pyrite and marcasite could be oxidised into Fe 2O 3 with a high porous structure. When microwave radiation was carried out in a rotary bed, the oxidation was more uniformly developed, in comparison with in a fixed bed. Gold extraction by cyanidation could be remarkably improved after the ore was subjected to microwave radiation. The results showed that gold recovery could be improved from 37% to 69%~ 81.2 %. | 黄建辉 | 2000 | Rare Metals2000，19，3： | 21 |
| 8 | Liproxstatin-1 is an effective inhibitor of oligodendrocyte ferroptosis induced by inhibition of glutathione peroxidase 4显示文摘Our previous studies showed that ferroptosis plays an important role in the acute and subacute stages of spinal cord injury.High intracellular iron levels and low glutathione levels make oligodendrocytes vulnerable to cell death after central nervous system trauma.In this study,we established an oligodendrocyte(OLN-93 cell line)model of ferroptosis induced by RSL-3,an inhibitor of glutathione peroxidase 4(GPX4).RSL-3 significantly increased intracellular concentrations of reactive oxygen species and malondialdehyde.RSL-3 also inhibited the main antiferroptosis pathway,i.e.,SLC7A11/glutathione/glutathione peroxidase 4(xCT/GSH/GPX4),and downregulated acyl-coenzyme A synthetase long chain family member 4.Furthermore,we evaluated the ability of several compounds to rescue oligodendrocytes from ferroptosis.Liproxstatin-1 was more potent than edaravone or deferoxamine.Liproxstatin-1 not only inhibited mitochondrial lipid peroxidation,but also restored the expression of GSH,GPX4 and ferroptosis suppressor protein 1.These findings suggest that GPX4 inhibition induces ferroptosis in oligodendrocytes,and that liproxstatin-1 is a potent inhibitor of ferroptosis.Therefore,liproxstatin-1 may be a promising drug for the treatment of central nervous system diseases. | Bao-You Fan Yi-Lin Pang Wen-Xiang Li Chen-Xi Zhao Yan Zhang Xu Wang Guang-Zhi Ning Xiao-Hong Kong Chang Liu Xue Yao Shi-Qing Feng | 2021 | Neural Regeneration Research2021，16，3： | 19 |
| 9 | Effects of temperature on the tribological behavior of Al0.25CoCrFeNi high-entropy alloy显示文摘The tribological behavior of Al0.25 CoCrFeNi high-entropy alloy(HEA) sliding against Si3N4 ball was investigated from room temperature to 600°. The microstructure of the alloys was characterized by simple FCC phase with 260 HV. Below 300°, with increasing temperature, the wear rate increased due to high temperature softening. The wear rate remained stabilized above 300°due to the anti-wear effect of the oxidation film on the contact interface. The dominant wear mechanism of HEA changed from abrasive wear at room temperature to delamination wear at 200°, then delamination wear and oxidative wear at 300°and became oxidative above 300°. Moreover, the adhesive wear existed concomitantly below 300°. | L.M.Du L.W.Lan S.Zhu H.J.Yang X.H.Shi P.K.Liaw J.W.Qiao | 2019 | Journal of Materials Science & Technology2019，35，5： | 17 |
| 10 | Corrosion resistance of in-situ growth of nano-sized Mg(OH)2 on micro-arc oxidized magnesium alloy AZ31—Influence of EDTA显示文摘One of the major obstacles for the clinical use of biodegradable magnesium(Mg)-based materials is their high corrosion rate. Micro-arc oxidation(MAO) coatings on Mg alloys provide mild corrosion protection owing to their porous structure. Hence, in this study a dense Mg(OH)2 film was fabricated on MAO-coated Mg alloy AZ31 in an alkaline electrolyte containing ethylenediamine tetraacetic acid disodium(EDTA-2 Na) to reinforce the protection. Surface morphology, chemical composition and growth process of the MAO/Mg(OH)2 hybrid coating were examined using field-emission scanning electron microscopy, energy dispersive X-ray spectrometer, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectrophotometer. Corrosion resistance of the coatings was evaluated via potentiodynamic polarization curves and hydrogen evolution tests. Results manifested that the Mg(OH)2 coating possesses a porous nano-sized structure and completely seals the micro-pores and micro-cracks of the MAO coating.The intermetallic compound of AlMn phase in the substrate plays a key role in the growth of Mg(OH)2 film. The current density of Mg(OH)2-MAO composite coating decreases three orders of magnitude in comparison with that of bare substrate, indicating excellent corrosion resistance. The Mg(OH)2-MAO composite coating is beneficial to the formation of calcium phosphate corrosion products on the surface of Mg alloy AZ31, demonstrating a great promise for orthopaedic applications. | Chang-Yang Li Xiao-Li Fan Rong-Chang Zeng Lan-Yue Cui Shuo-Qi Li Fen Zhang Qing-Kun He M. Bobby Kannan Hong-Wei (George) Jiang Dong-Chu Chen Shao-Kang Guan | 2019 | Journal of Materials Science & Technology2019，35，6： | 16 |
| 11 | 六苄基六氮杂异伍兹烷的氧化脱苄乙酰化显示文摘采用 KMn0 4 / Ac2 0为反应介质 ,使 2 ,4,6 ,8,10 ,12 -六苄基 - 2 ,4,6 ,8,10 ,12 -六氮杂四环 [5 .5 .0 .0 5,9.0 3 .11]十二烷分子中的苄基发生氧化脱苄乙酰化 ,得到未见文献报道的 2 -乙酰基 - 6 ,8,12 -三苯甲酰基 - 4,10 -二苄基 - 2 ,4,6 ,8,10 ,12 -六氮杂四环 [5 .5 .0 .0 5,9.0 3 .11]十二烷和 2 ,8二乙酰基 - 6 ,12 -二苯甲酰基 - 4,10 -二苄基 - 2 ,4,6 ,8,10 ,12 -六氮杂四环 [5 .5 .0 .0 5,9.0 3 .11]十二烷。 | 陈树森 邱文革 于永忠 | 2000 | 火炸药学报2000，23，2： | 15 |
| 12 | Advanced oxidation protein products decrease expression of nephrin and podocin in podocytes via ROS-dependent activation of p38 MAPK显示文摘Accumulation of plasma advanced oxidation protein products(AOPPs) promotes progression of proteinuria and glomerulo-sclerosis.To investigate the molecular basis of AOPPs-induced proteinuria,normal Sprague-Dawley rats were treated with AOPPs-modified rat serum albumin.The expression of glomerular podocyte slit diaphragm(PSD)-associated proteins,nephrin and podocin,was significantly decreased coincident with the onset of albuminuria in rats treated with AOPPs.Chronic inhibi-tion of NADPH oxidase by apocynin prevented down-regulation of nephrin and podocin and decreased albuminuria in AOPPs-challenged rats.This suggested that accumulation of AOPPs promotes proteinuria,possibly via down-regulating the expression of PSD-associated proteins. | YANG Li,LIANG Min,ZHOU QiuGen,XIE Di,LOU AiJu,ZHANG Xun & HOU FanFan Key Laboratory for Organ Failure Research,Division of Nephrology,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China. | 2010 | Science China(Life Sciences)2010，53，1： | 14 |
| 13 | Insight of the stability and activity of platinum single atoms on ceria显示文摘Single-atom catalysts (SACs) have recently attracted broad attention in the catalysis field due to their maximized atom efficiency and unique catalytic properties.An atomic-level understanding of the interaction between the metal atoms and support is vital for developing stable and high-performance SACs.In this work,Pt1 single atoms with Ioadings up to 4 wt.% were fabricated on ceria nanorods using the atomic layer deposition technique.To understand the Pt-O-Ce bond interfacial interactions,the stability of Pt1 single atoms in the hydrogen reducing environment was extensively investigated by using in situ diffuse reflectance infrared Fourier transform spectroscopy CO chemisorption measurements.It was found that ceria defect sites,metal Ioadings and high-temperature calcination are effective ways to tune the stability of Pt1 single atoms in the hydrogen environment.X-ray photoemission spectroscopy further showed that Pt1 single atoms on ceria are dominantly at a +2 valence state at the defect and step edge sites,while those on terrace sites are at a +4 state.The above tailored stability and electronic properties of Pt1 single atoms are found to be strongly correlated with the catalytic activity in the dry and water-mediated CO oxidation reactions. | Xuxu Ye Hengwei Wang Yue Lin Xinyu Liu Lina Cao Jian Gu Junling Lu | 2019 | Nano Research2019，12，6： | 13 |
| 14 | EFFECT OF NANOCRYSTALLIZATION ON OXIDATION RESISTANCE OF TiAl INTERMETALLIC COMPOUND显示文摘EFFECTOFNANOCRYSTALLIZATIONONOXIDATIONRESISTANCEOFTiAlINTERMETALLICCOMPOUND①TangZhaolin,WangFuhui,WuWeitaoNationalKeyLaborato... | Tang Zhaolin , Wang Fuhui , Wu Weitao National Key Laboratory for Corrosion and Protection, Young Scientists Laboratory of Surface Engineering, Institute of Corrosion and Protection of Metals, Chinese Academy of Sciences, Shenyang 110015 | 1997 | 中国有色金属学会会刊:英文版1997，7，2： | 13 |
| 15 | Oxidation of two-phase Cu-Cr alloys with different microstructures显示文摘The oxidation of PM Cu 50Cr, MA Cu 40Cr and MS Cu 40Cr alloys at 800 ℃ in 0.1 MPa O 2 was studied. The most important difference of their oxidation behaviors is the formation of an exclusive chromia scale on the surface of the MS Cu 40Cr alloy and a continuous chromia layer beneath an outer CuO layer corresponding MA Cu 40Cr alloy, while a complex scale composing of CuO, Cu 2O, Cu 2Cr 2O 4 and Cr 2O 3 formed on the PM Cu 50Cr alloy. This result implies that alloy microstructure affects their oxidation behaviors largely. Microcrystalline structure provides numerous diffusion paths for reactive component chromium, shorter diffusion distance and rapid dissolution of Cr riched second phase. All these favor the exclusive formation of the most stable oxide. [ | 付广艳 牛焱 吴维 管恒荣 | 2001 | 中国有色金属学会会刊:英文版2001，11，3： | 13 |
| 16 | Dysregulated lipid metabolism in cancer显示文摘Alteration of lipid metabolism has been increasingly recognized as a hallmark of cancer cells. The changes of expression and activity of lipid metabolizing enzymes are directly regulated by the activity of oncogenic signals. The dependence of tumor cells on the dysregulated lipid metabolism suggests that proteins involved in this process are excellent chemotherapeutic targets for cancer treatment. There are currently several drugs under development or in clinical trials that are based on specifically targeting the altered lipid metabolic pathways in cancer cells. Further understanding of dysregulated lipid metabolism and its associated signaling pathways will help us to better design efficient cancer therapeutic strategy. | Feng Zhang Guang-Wei Du | 2012 | World Journal of Biological Chemistry2012，3，8： | 12 |
| 17 | Silibinin ameliorates hepatic lipid accumulation and oxidative stress in mice with non-alcoholic steatohepatitis by regulating CFLAR-JNK pathway显示文摘Non-alcoholic steatohepatitis(NASH) is a chronic metabolic syndrome and the CFLAR-JNK pathway can reverse the process of NASH. Although silibinin is used for the treatment of NASH in clinical, its effect on CFLAR-JNK pathway in NASH remains unclear. This study aimed to investigate the effect of silibinin on CFLAR-JNK pathway in NASH models both in vivo and in vitro. The in vivo study was performed using male C57 BL/6 mice fed with methionine– choline-deficient diet and simultaneously treated with silibinin for 6 weeks. The in vitro study was performed by using mouse NCTC-1469 cells which were respectively pretreated with oleic acid plus palmitic acid, and adenovirus-down Cflar for 24 h,then treated with silibinin for 24 h. After the drug treatment, the key indicators involved in CFLAR-JNK pathway including hepatic injury, lipid metabolism and oxidative stress were determined. Silibininsignificantly activated CFLAR and inhibited the phosphorylation of JNK, up-regulated the mRNA expression of Pparα, Fabp5, Cpt1α, Acox, Scd-1, Gpat and Mttp, reduced the activities of serum ALT and AST and the contents of hepatic TG, TC and MDA, increased the expression of NRF2 and the activities of CAT, GSH-Px and HO-1, and decreased the activities and expression of CYP2 E1 and CYP4 A in vivo.These effects were confirmed by the in vitro experiments. Silibinin prevented NASH by regulating CFLAR-JNK pathway, and thereby on one hand promoting the β-oxidation and efflux of fatty acids in liver to relieve lipid accumulation, and on the other hand inducing antioxidase activity(CAT, GSH-Px and HO-1) and inhibiting pro-oxidase activity(CYP2 E1 and CYP4 A) to relieve oxidative stress. | Yayun Liu Wei Xu Ting Zhai Jiaojiao You Yong Chen | 2019 | Acta Pharmaceutica Sinica B2019，9，4： | 12 |
| 18 | Selective oxidation of ethylbenzene catalyzed by fluorinated metalloporphyrins with molecular oxygen显示文摘This paper reported the oxidation of ethylbenzene catalyzed by fluorinated metalloporphyrins under mild conditions without any additives.The results showed that the cobalt(Ⅱ)(5,10,15,20-tetrakis(pentafluorophenyl))porphyrin was the best catalyst among the fluorinated metalloporphyrins.The conversion of ethylbenzene reached 38.6%,the selectivity to acetophenone reached 94.0%,and the turnover number is 2719 under the optimal conditions. | Xiao Gang Li Jing Wang Ren He | 2007 | Chinese Chemical Letters2007，18，9： | 12 |
| 19 | Rare Earth Effects on Adhesion of Cr_2O_3 Oxide Scale Formed on Surface of Co-40Cr Alloy显示文摘Isothermal and cyclic oxidation behaviors of Co 40Cr alloy at 1000 ℃ in air were studied. Scanning electron microscopy (SEM) was used to examine the oxide scale formed on the surface of the alloy. By comparing the oxidation behaviors of Co 40Cr alloy and its 3×10 16 and 3×10 17 Y +/cm 2 implanted specimens, it was found that the resistant to oxidation property of Co 40Cr was greatly improved due to the implantation of yttrium. Acoustic emission was used to study the distribution of defects at the interface between the scale and alloy. Raman spectrum was also used to study the stress status in chromic scale formed on the surface of Co 40Cr with and without yttrium. The main reason for the improvement of resistant to oxidation property of Y doped Co 40Cr probably is that yttrium can segregate to Cr 2O 3 grain boundaries and change the scale′s growing mechanism and mechanical property. Most importantly, Y implantation decreases the size and number of interfacial defects and the residual stress in the scale, and remarkably enhances the adhesion of chromia scale with Co 40Cr substrate. | 靳惠明 张林楠 李美栓 李铁藩 | 2001 | Journal of Rare Earths2001，19，1： | 12 |
| 20 | Abnormal metabolism of nitric oxide, oxidative stress and lipoperoxidative stress in patients with acute viral myocarditis显示文摘Objective To investigate metabolic status of nitric oxide (NO) as well as oxidative and lipoperoxidative stress, pathological chain reactions of a series of free radicals, and oxidative and lipoperoxidative damages in patients with acute viral myocarditis (AVM)、 Methods Using a random paired control design, plasma levels of NO, lipoperoxides (LPO), vitamin C (VC), vitamin E (VE) and β-carotene (β-CAR), erythrocytic level of LPO as well as activities of erythrocytic superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) were investigated by spectrophotometric assays in 60 AVM patients and 60 healthy adult volunteers (HAV)、 Results Compared with the HAV group, plasma NO, and LPO in plasma and in erythrocyte of the AVM group significantly increased (P=0、0001), while VC, VE, β-CAR, SOD, CAT and GSH-Px of the AVM group significantly decreased (P=0、0001)、 Compared with the AVM group before treatment, plasma NO, and LPO in plasma and in erythrocyte of the AVM group post treatment significantly decreased (P<0、05), whereas plasma VC, VE and β-CAR as well as erythrocytic SOD, CAT and GSH-Px of the AVM group post treatment significantly increased (P<0、05)、Conclusion The findings in this study suggested that in the AVM patients the metabolism of NO was disturbed, and the pathological chain reactions of a series of free radicals were severely aggravated, thus produced the oxidative damage and lipoperoxidative damages、 Therefore, we recommend that antioxidants at suitable dosage, such as VC, VE, β-CAR and others, should be given to AVM patients daily to alleviate potential oxidative and lipoperoxidative damages in their | 陈鹏 周君富 | 2001 | Chinese Medical Journal2001，，11： | 11 |
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