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| 1 | Centrifuge modeling of buried continuous pipelines subjected to normal faulting显示文摘Seismic ground faulting is the greatest hazard for continuous buried pipelines.Over the years,researchers have attempted to understand pipeline behavior mostly via numerical modeling such as the finite element method.The lack of well-documented field case histories of pipeline failure from seismic ground faulting and the cost and complicated facilities needed for full-scale experimental simulation mean that a centrifuge-based method to determine the behavior of pipelines subjected to faulting is best to verify numerical approaches.This paper presents results from three centrifuge tests designed to investigate continuous buried steel pipeline behavior subjected to normal faulting.The experimental setup and procedure are described and the recorded axial and bending strains induced in a pipeline are presented and compared to those obtained via analytical methods.The influence of factors such as faulting offset,burial depth and pipe diameter on the axial and bending strains of pipes and on ground soil failure and pipeline deformation patterns are also investigated.Finally,the tensile rupture of a pipeline due to normal faulting is investigated. | Majid Moradi Mahdi Rojhani Abbas Galandarzadeh Shiro Takada | 2013 | Earthquake Engineering and Engineering Vibration2013，12，1： | 11 |
| 2 | S32750超级双相不锈钢在NaCl溶液中的临界点蚀温度及电化学腐蚀机理显示文摘采用电化学测试研究了S32750超级双相不锈钢在3.5%Na Cl溶液中的临界点蚀温度(CPT)及电化学腐蚀机理,结合试样点蚀前后的形貌变化,得出S32750不锈钢的临界点蚀温度为71℃。在低于临界点蚀温度时,不锈钢表面能形成稳定的钝化膜;高于临界点蚀温度时,由于Cl-的活性增加及钝化膜的溶解,不锈钢表面产生点蚀现象,且温度越高,点蚀越剧烈。构建了双相不锈钢S32750临界点蚀温度前后的电化学腐蚀模型。 | 何进 晏敏胜 杨丽景 Masoumeh Moradi 宋振纶 蒋业华 | 2015 | 中国腐蚀与防护学报2015，35，2： | 11 |
| 3 | Determination and stability analysis of ultimate open-pit slope under geomechanical uncertainty显示文摘In open-pit mines,pit slope as one of the important parameters affects the mine economy and total minable reserve,and it is also affected by different uncertainties which arising from many sources.One of the most critical sources of uncertainty effects on the pit slope design is rock mass geomechanical properties.By comparing the probability of failure resulted from deterministic procedure and probabilistic one,this paper investigated the effects of aforesaid uncertainties on open-pit slope stability in metal mines.In this way,to reduce the effect of variance,it implemented Latin Hypercube Sampling(LHS)technique.Furthermore,a hypothesis test was exerted to compare the effects on two cases in Middle East.Subsequently,the investigation approved high influence of geomechanical uncertainties on overall pit steepness and stability in both iron and copper mines,though on the first case the effects were just over. | Ali Moradi Afrapoli Morteza Osanloo | 2014 | International Journal of Mining Science and Technology2014，24，1： | 10 |
| 4 | Vascular endothelial growth factor trap-eye(Aflibercept) for the management of diabetic macular edema显示文摘Diabetic retinopathy(DR)is the most common cause of visual loss among working age individuals.Diabetic macular edema(DME)is an important complication of DR that affects around one third of the patients with DR.Several treatments have been approved for DME ranging from blood pressure and glycemic control to photocoagulation and more recently the use of vascular endothelial growth factor(VEGF)antagonists.The index review discusses aflibercept(EYLEA-Regeneron Pharmaceuticals,Inc.,Tarrytown,New York,NY,and Bayer Healthcare Pharmaceuticals,Berlin,Germany)in the context of other VEGF antagonists currently available for the treatment of DME.A systematic search of literature was conducted on PubMed,Scopus,and Google Scholar with no limitation on language or year of publication.Pre-clinical studies of aflibercept have shown a higher affinity of this molecule for vascular endothelial growth factor A(VEGF-A)along with a longer duration of action as compared to other VEGF antagonists.Recent clinical trials have shown visual outcome results for aflibercept to be similarly favorable as compared to other available agents with the added benefit of fewer required injections and less frequent monitoring.Aflibercept presents a potential exciting new addition to the armamentarium of current VEGF antagonists available for the treatment of DME and other retinal vascular diseases.However,further studies are indicated to confirm the role,safety,and efficacy of aflibercept for DME. | Ahmadreza Moradi Yasir Jamal Sepah Mohammad Ali Sadiq Humzah Nasir Salima Kherani Raafay Sophie Diana V Do Quan Dong Nguyen | 2013 | World Journal of Diabetes2013，4，6： | 8 |
| 5 | Addition of IrO_2 to RuO_2+TiO_2 coated anodes and its effect on electrochemical performance of anodes in acid media显示文摘Ternary mixed metal oxide coatings with the nominal composition IrxRu(0.6-x)Ti0.4O2(x=0, 0.1, 0.2, 0.3) on the titanium substrate were prepared by thermal decomposition of a chloride precursor mixture. Surface morphology and microstructure of the coatings were investigated by Scanning electron microscopy(SEM), Field emission scanning electron microscopy(FE-SEM) and X-ray diffraction(XRD) analysis. Systematic study of electrochemical properties of these coatings was performed by cyclic voltammetry(CV) and polarization measurements. The corrosion behavior of the coatings was evaluated under accelerated conditions(j=2 A cm-2) in acidic electrolyte. The role of iridium oxide admixture in the change of electrocatalytic activity and stability of Ru0.6Ti0.4O2coating was discussed. Small addition of IrO2can improve the stability of the RuO2+TiO2mixed oxide, while the electrocatalytic activity for oxygen evolution reaction(OER) is decreased. The shift of redox potentials for Ru0.6Ti0.4O2electrode that is slightly activated with IrO2and improvement in the stability can be attributed to the synergetic effect of mixed oxide formation. | Farhad Moradi Changiz Dehghanian | 2014 | Progress in Natural Science:Materials International2014，24，2： | 7 |
| 6 | Adsorption of Folic Acid on the Single-walled Carbon Nanotubes: AIM and NBO Analyses via DFT显示文摘In the present work,the behavior of folic acid(FA) molecule adsorbed onto single-walled carbon nanotube(SWCNT) was examined using the DFT-B3LYP/6-31G* level.In order to obtain information about the binding features of SWCNT as adsorbent with FA molecule,several studies,including the structural and electronic parameters and also the Atoms in Molecules(AIM) analysis,were performed.It was observed that the FA molecule via hydrogen bond prefers to adsorb on SWCNT with adsorption energy of about-18.70 kcal/mol.The molecular orbitals(HOMO and LUMO),natural bond orbital(NBO) analysis,and density of states(DOS) plot indicated that a charge about 0.032 | e | is transferred from the FA molecule to the nanotube.After solvation energy calculations,it was found that the presence of a polar solvent causes an increase in FA adsorption on the single-walled carbon nanotube.Topological features such as electron energy density(Hc) and Laplacian of the electron density(2ρc) demonstrate partial covalent nature for H(116)…O(10) interaction in the FA/SWCNT complex.According to the calculated results,the single-walled carbon nanotubes are expected to be a potential efficient adsorbent for the adsorption of folic acid drug and also can be used as a suitable drug delivery vehicle within biological systems. | Shahla Hamedani Shahram Moradi Hossein Aghaie | 2015 | Chinese Journal of Structural Chemistry2015，34，8： | 6 |
| 7 | Extractive oxidative desulfurization of model oil/crude oil using KSF montmorillonite-supported 12-tungstophosphoric acid显示文摘12-Tungstophosphoric acid(PW) supported on KSF montmorillonite, PW/KSF, was used as catalyst for deep oxidative desulfurization(ODS) of mixed thiophenic compounds in model oil and crude oil under mild conditions using hydrogen peroxide(H_2O_2) as an oxidizing agent. A one-factor-at-a-time method was applied for optimizing the parameters such as temperature, reaction time, amount of catalyst, type of extractant and oxidant-tosulfur compounds(S-compounds) molar ratio. The corresponding products can be easily removed from the model oil by using ethanol as the best extractant. The results showed high catalytic activity of PW/KSF in the oxidative removal of dibenzothiophene(DBT) and mixed thiophenic model oil under atmospheric pressure at 75 ℃ in a biphasic system. To investigate the oxidation and adsorption effects of crude oil composition on ODS, the effects of cyclohexene, 1,7-octadiene and o-xylene with different concentrations were studied. | Ezzat Rafiee Sadegh Sahraei Gholam Reza Moradi | 2016 | Petroleum Science2016，13，4： | 6 |
| 8 | Quercetin protects liver injury induced by bile duct ligation via attenuation of Rac1 and NADPH oxidase1 expression in rats显示文摘BACKGROUND: Bile duct ligation(BDL) and subsequent cholestasis are correlated with oxidative stress, hepatocellular injury and fibrosis. Quercetin is a flavonoid with antifibrotic,and hepatoprotective properties. However, the molecular mechanism underlying quercetin-mediated hepatoprotection is not fully understood. The current study was to evaluate mechanisms of hepatoprotective effect of quercetin in BDL rat model.METHODS: We divided male Wistar rats into 4 groups(n=8 for each): sham, sham+quercetin(30 mg/kg per day), BDL, and BDL+quercetin(30 mg/kg per day). Four weeks later, the rats were sacrificed, the blood was collected for liver enzyme measurements and liver for the measurement of Rac1, Rac1-GTP and NOX1 mR NA and protein levels by quantitative PCR and Western blotting, respectively.RESULTS: Quercetin significantly alleviated liver injury in BDL rats as evidenced by histology and reduced liver enzymes.Furthermore, the m RNA and protein expression of Rac1,Rac1-GTP and NOX1 were significantly increased in BDL rats compared with those in the sham group(P<0.05); quercetin treatment reversed these variables back toward normal(P<0.05). Another interesting finding was that the antioxidant markers e.g. superoxide dismutase and catalase were elevated in quercetin-treated BDL rats compared to BDL rats(P<0.05).CONCLUSION: Quercetin demonstrated hepatoprotective activity against BDL-induced liver injury through increasing antioxidant capacity of the liver tissue, while preventing the production of Rac1, Rac1-GTP and NOX1 proteins. | Razieh Kabirifar Zohreh-al-sadat Ghoreshi Fatemeh Safari Alireza Karimollah Ali Moradi Ebrahim Eskandari-nasab | 2017 | Hepatobiliary & Pancreatic Diseases International2017，16，1： | 6 |
| 9 | Methanogenic archaea and sulfate reducing bacteria induce severe corrosion of steel pipelines after hydrostatic testing显示文摘Complex interactions within a microbial consortium can induce severe corrosion in oil pipelines.This study investigated the mechanism of microbiologically influenced corrosion(MIC)that led to failure of X52 steel pipelines after hydrostatic testing.Laboratory hydrostatic testing with untreated lake water and underground water were used to simulate and study the events that led to the actual corrosion.Biofilm analysis,weight loss,and several electrochemical measurements demonstrated rapid corrosion rates after hydrostatic testing.Analysis of microbial community structures revealed that methanogenic archaea and sulfate reducing bacteria(SRB),introduced by the hydrotest water,formed corrosive biofilms on X52 steel coupon surfaces that induced severe pitting. | Enze Zhou Jianjun Wang Masoumeh Moradi Huabing Li Dake Xu Yuntian Lou Jinheng Luo Lifeng Li Yulei Wang Zhenguo Yang Fuhui Wang Jessica A.Smith | 2020 | Journal of Materials Science & Technology2020，47，13： | 5 |
| 10 | Over-mature beech trees (Fagus orientalis Lipsky) and close-to-nature forestry in northern Iran显示文摘Oriental Beech is the most important commercial tree species in northern Iran. In recent years wood production companies interested in felling large beech trees for profit have challenged advocates of close-to-nature silviculture who favor conservation. Our study objective was to assess the economic value of over-mature beech trees by relating tree diameter (DBH) to amount of decay. Based on the location of onset of decay, we categorized three types of decay as stump, stem, and crown decay. Trees of greater diameter (age) typically showed greater decay in the stem. Percent of decayed volume, diameter of decayed tissue, and length of decay in tree stems varied between 0.5%?64.3%, 15 cm?75 cm, and 2.0?19.5 m, respectively. With increasing trunk diameter, the proportion of truck decay increased. Red heart and dark red heart constituted 25% and 14.3% of sampled trees, respectively. However, we found no correlation between intensity of stem decay and morphological characteristics of trees. Seedlings were not abundant around the bases of over-mature trees, suggesting that the trees did not contribute to regeneration of the stand. Beech trees of diameter >1 m do not provide valuable round wood for industries and cause to raise wood production costs. We recommend that these trees >1 m DBH should be retained in forest stands because of their low commercial value but high ecological and conservational values such as maintaining biodiversity in forest ecosys-tems. | Mostafa Moradi Mohammad R.Marvie Mohadjer Kiomars Sefidi Mahmoud Zobiri Ali Omidi | 2012 | Journal of Forestry Research2012，23，2： | 5 |
| 11 | A systematic review of the effect of various interventions on reducing fatigue and sleepiness while driving显示文摘PurposeTo 当时,识别并且估价为减少疲劳和瞌睡估计干预财务的出版研究系统的评论寻找了的 driving.MethodsThis 下列电子数据库:Medline,科学直接, Scopus, EMBASE, PsycINFO,运输数据库, Cochrane, BIOSIS,知识的 ISI 网,专家道路损害杂志和澳大利亚的运输和道路索引数据库。另外的搜索包括了相关组织,包括的研究的参考书表,和在过去的 15 年以内出版的主要损害杂志的期的网站。如果他们为作为结果减少疲劳和瞌睡调查了干预 / 暴露财务,研究被包括,为瞌睡的缓解测量了任何潜在的干预并且用英语被写。因为 63 研究识别了的包括的 studies.ResultsOf 的异质,元分析没被尝试, 18 满足了包括标准。基于我们的评论的结果,当开车例如时,在世界上的许多干预被用来减少睡意行为(与旅客谈话,脸洗,听收音机,没有白酒使用,在下午12点的时候限制开车行为-上午6点等等),教育干预并且也在环境变化(例如抱怨声脱衣,V形臂章,可变消息符号,等等)。所有这些干预的效果上的元分析由于在方法论,在现在的评论的估计的 studies.ConclusionResults 报导的效果尺寸和干预的高异质是不可能的在世界的不同部分的显示出的各种各样的干预被用来催眠开车减少。尽管这些干预能与道路交通事故的高发生在国家被使用,每干预的精确效果仍然是未知的。进一步的研究根据每个国家的交通模式为每干预的效率和每干预的本地化的比较被要求。 | Seyed Saeed Hashemi Nazari Ali Moradi Khaled Rahmani | 2017 | Chinese Journal of Traumatology2017，20，5： | 5 |
| 12 | Type-2 Fuzzy Control for a Flexible-joint Robot Using Voltage Control Strategy显示文摘Type-1 fuzzy sets cannot fully handle the uncertainties. To overcome the problem, type-2 fuzzy sets have been proposed. The novelty of this paper is using interval type-2 fuzzy logic controller (IT2FLC) to control a flexible-joint robot with voltage control strategy. In order to take into account the whole robotic system including the dynamics of actuators and the robot manipulator, the voltages of motors are used as inputs of the system. To highlight the capabilities of the control system, a flexible joint robot which is highly nonlinear, heavily coupled and uncertain is used. In addition, to improve the control performance, the parameters of the primary membership functions of IT2FLC are optimized using particle swarm optimization (PSO). A comparative study between the proposed IT2FLC and type-1 fuzzy logic controller (T1FLC) is presented to better assess their respective performance in presence of external disturbance and unmodelled dynamics. Stability analysis is presented and the effectiveness of the proposed control approach is demonstrated by simulations using a two-link flexible-joint robot driven by permanent magnet direct current motors. Simulation results show the superiority of the IT2FLC over the T1FLC in terms of accuracy, robustness and interpretability. | Majid Moradi Zirkohi Mohammad Mehdi Fateh Mahdi Aliyari Shoorehdeli | 2013 | International Journal of Automation and computing2013，10，3： | 5 |
| 13 | Interleukin-12 as a Genetic Adjuvant Enhances Hepatitis C Virus NS3 DNA Vaccine Immunogenicity显示文摘Hepatitis C virus (HCV) chronic infection is a worldwide health problem, and numerous efforts have been invested to develop novel vaccines. An efficient vaccine requires broad immune response induction against viral proteins. To achieve this goal, we constructed a DNA vaccine expressing nonstructural 3 (NS3) gene (pcDNA3.1-HCV-NS3) and assessed the immune response in C57BL/6 mice. In this study, the NS3 gene was amplified with a nested-reverse transcriptase-polymerase chain reaction (RT-PCR) method using sera of HCV-infected patients with genotype 1a. The resulting NS3 gene was subcloned into a pcDNA3.1 eukaryotic expression vector, and gene expression was detected by western blot. The resultant DNA vaccine was co-administered with interleukin-12 (IL-12) as an adjuvant to female C57BL/6 mice. After the final immunizations, lymphocyte proliferation, cytotoxicity, and cytokine levels were assessed to measure immune responses. Our data suggest that co-administration of HCV NS3 DNA vaccine with IL-12 induces production of significant levels of both IL-4 and interferon (IFN)-γ (p<0.05). Cytotoxicity and lymphocyte proliferation responses of vaccinated mice were significantly increased compared to control (p<0.05). Collectively, our results demonstrated that co-administration of HCV NS3 and IL-12 displayed strong immunogenicity in a murine model. | Malihe Naderi Atefeh Saeedi Abdolvahab Moradi Mishar Kleshadi Mohammad Reza Zolfaghari Ali Gorji Amir Ghaemi | 2013 | Virologica Sinica2013，28，3： | 5 |
| 14 | Tandem synthesis of functionalized hexaalkyl benzoisoquinolinopyrrolonaphthyridine-hexacarboxylate, via isoquinoline based multi-component reaction显示文摘An expedient,synthetic method to fused polycyclic derivatives of isoquinoline is described via tandem reaction of isoquinoline,dialkyl acetylenedicarboxylates and dialkyl chloromalonate. | Mohammad Piltan Issa Yavari Loghman Moradi | 2013 | Chinese Chemical Letters2013，24，11： | 5 |
| 15 | 新喀里多尼亚弧菌对Cu在人工海水中腐蚀行为的影响显示文摘分离出了一种具有高度缓蚀作用的新喀里多尼亚弧菌,通过电化学测量方法和表面分析技术研究了该细菌对Cu在人工海水中腐蚀行为的影响。结果表明,新喀里多尼亚弧菌使Cu的开路电位明显负移;在有菌介质中,Cu表面的阻抗值显著增大;同时腐蚀电流密度明显降低,说明该细菌可以抑制Cu在人工海水中的腐蚀。CLSM结果显示,Cu表面吸附有大量的细菌,而SEM观察到Cu表面生物膜并不多,说明这种抑制作用是由吸附在Cu表面的细菌引起的,而与Cu表面的生物膜关系不大。 | 闫涛 宋振纶 Masoumeh Moradi 杨丽景 肖涛 侯利锋 | 2016 | 中国腐蚀与防护学报2016，36，2： | 4 |
| 16 | 磁场对纯Cu微生物腐蚀行为的影响显示文摘从位于中国东海的舟山海域海底沉积物中分离提取得到4种细菌,分别为弧菌、威尼斯不动杆菌、河流弧菌及咸海鲜芽孢杆菌。采用电化学测量和表面分析技术研究了外加磁场下纯Cu在4种混合细菌溶液中的腐蚀行为。结果表明,磁场对细菌生长无明显影响,但影响Cu表面生物膜的结构与成分,加快生物膜形成与剥落的速率,且磁场越大,附着速度越快。随着磁场增大,生物膜中脂质含量减少,生物膜组成由脂质、蛋白质、碳水化合物转变成蛋白质和碳水化合物,且蛋白质含量降低,碳水化合物含量增多。施加磁场,样品在溶液中的Rct值明显提高,腐蚀电流密度减小,同时表面的点蚀程度减弱,表明磁场可以抑制Cu的微生物腐蚀进程,且磁场强度为60 mT时比28 mT时更能明显抑制Cu的腐蚀。 | 卫晓阳 MORADI Masoumeh 杨丽景 吕战鹏 郑必长 宋振纶 | 2019 | 中国腐蚀与防护学报2019，39，6： | 4 |
| 17 | Essential Oil from Citrus aurantium Alleviates Anxiety of Patients Undergoing Coronary Angiography: A Single-Blind, Randomized Controlled Trial显示文摘Objective To determine the effectiveness and safety of essential oil from Citrus aurantium on anxiety in patients undergoing coronary angiography.Methods A single-blind,randomized controlled trial was conducted in 80 patients experiencing coronary angiography in Imam Ali Hospital in Kermanshah,Iran from April to November in 2016.All patients were randomly divided into intervention and control groups by a random number table,40 cases in each group.The patients in the intervention group inhaled Citrus aurantium essential oil for 15–20 min about 60 min before angiography.Following the same procedure,distilled water was used instead of Citrus aurantium in the control group.Spielbergers State-Trait Anxiety Inventory(STAI)was filled in and vital signs including systolic blood pressure(SBP),diastolic blood pressure(DBP),respiratory and pulse rate were recorded before and 20 min after the intervention.Adverse reactions after intervention were observed.Results In the intervention group,the mean scores of STAI,SBP,DBP,respiratory and pulse rate were 53.30±10.13,134.82±11.75 mm Hg,84.49±6.99 mm Hg,17.87±1.73 times/min,and 76.48±12.55 beats/min at baseline and significantly decreased to 42.37±10.15,124.49±10.48 mm Hg,79.23±6.62 mm Hg,14.54±1.43 times/min,and 70.03±13.66 beats/min respectively 20 min after intervention(all P<0.05);however,in the control group,neither anxiety scores nor vital signs changed significantly(P>0.05).All subjects reported no adverse reactions.Conclusion Inhalation of the essential oil from Citrus aurantium was effective in reducing anxiety and stress levels in patients undergoing coronary angiography. | Khalil Moradi Hossein Ashtarian Nicholas Yakubu Danzima Hamid Saeedi Behrouz Bijan Farzaneh Akbari Mohammad Mehdi Mohammadi | 2021 | Chinese Journal of Integrative Medicine2021，27，3： | 4 |
| 18 | The potential role of grape (Vitis vinifera L.) in prevention of threatened abortion via immunomodulatory and anti-inflammatory abilities: a hypothesis显示文摘Threatened abortion is a common problem in early pregnancy. This early vaginal bleeding happens in about 25% of pregnant women. The medications including progesterone, uterine muscle relaxant or human chorionic gonadotropin have essential effects in developing pregnancy, but the clinical data are insufficient to prescribe them. In recent decades, medicinal herbs can help us to present new treatments. Grape (Vitis vinifera L.) can protect the fetus from the perspective of Persian medicine. So, we hypothesize about the salutary effects of grape in miscarriage prevention. We found five standard expected mechanisms of grape to prevent threatened abortion: immunomodulatory and anti-inflammatory, anti-oxidant, anti-contraction, hormonal and anti-stress activities. Grape reduces nitric oxide, prostaglandin E2, expression of nuclear factor κB and other pro-inflammatory cytokines like IL (Interleukin)-1β, IL-6, IL-8, and tumor necrosis factor-α. It also elevates anti-inflammatory mediators and expression of peroxisome proliferator-activated receptor-γ. Grape polyphenols have a crucial role in fetus protection with high antioxidant power and other functions such as prevention of stress-triggered abortion with proanthocyanidins, or hormonal effects and inhibition of uterine contractions with resveratrol. So according to these studies, grape probably has effects on the immune and endocrine factors involved in threatened miscarriage. | Malihe Tabarrai Mozhgan Mehriardestani Sharareh Hekmat Fatemeh Nejatbakhsh Fatemeh Moradi | 2019 | Traditional Medicine Research2019，4，3： | 4 |
| 19 | Strontium Adsorption from Sulfuric Acid Solution by Dowex 50W-X Resins显示文摘在这研究,从由不同 Dowex 50W-X 离子交换树脂的硫磺的酸答案的锶吸附被调查。在这些树脂之中, Dowex 50W-X8 树脂从水的答案显示出锶的最大的吸着。pH,接触时间,树脂的团,温度,和锶吸附上的介入的离子的集中的效果被评估决定锶吸着过程的最佳条件。吸着的运动模型用伪 first 和伪秒顺序模型被分析。结果显示伪秒命令运动模型比另一个更适当。而且,在这研究获得的数据被适合进几个吸着等温线模型,兰米尔吸着等温线显示出最好的试穿到试验性的数据,这被发现。 | Meisam Hafizi Hossein Abolghasemi Morteza Moradi Saeed Alamdar Milani | 2011 | Chinese Journal of Chemical Engineering2011，19，2： | 4 |
| 20 | Exopolysaccharide produced by Vibrio neocaledonicus sp. as a green corrosion inhibitor:Production and structural characterization显示文摘An exopolysaccharide substances produced by Vibrio neocaledonicus sp. was introduced as a novel green inhibitor against the corrosion of carbon steel in artificial seawater and acidic media. The produced extracellular polymeric substance(EPS) is heterogeneous with composition of polysaccharides, nucleic acids and protein and average molecular weight of 29,572 Da. Adsorption of EPS on the metal surfaces and formation of Fe-EPS complexes acted as a barrier to prevent the oxygen penetration and hindered anodic and cathodic reactions. The inhibitory effect increases with increasing EPS concentration and exposure time. The highest corrosion inhibitory effect(95.1%) was observed for 10 g/L of EPS after 5 days of exposure in seawater. This is the highest inhibitory effect ever been reported by EPSs. While, the optimum concentration of EPS with the highest inhibition efficiency in 1 N H_2SO_4 was 1000 ppm. The influence of different parameters, such as initial pH, growth phase, various nitrogen and carbon sources on the production of EPS and its corrosion inhibitory effect were also investigated. According to results,the optimum culture medium for EPS production is contained artificial seawater including 5% mannitol as carbon source and 0.1%(NH_4)_2SO_4 as nitrogen source at pH = 8. This medium could produce 22.24 g/L EPS during 3 days' incubation at 30 ℃. The corrosion inhibitory efficiency of obtained EPS was 95.97%. | Masoumeh Moradi Zhenlun Song Tao Xiao | 2018 | Journal of Materials Science & Technology2018，34，12： | 4 |
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