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| 1 | Effect of residual dissolved oxygen on the corrosion behavior of low carbon steel in 0.1 M NaHCO3 solution显示文摘The effect of residual dissolved oxygen(DO)on the corrosion behavior of carbon steel in 0.1 M Na HCO_3solution was investigated by electrochemical measurements,corrosion mass loss test,scanning electron microscopy(SEM)and X-ray diffraction(XRD).In the initial immersion stage,the increase of the dissolved oxygen concentration led to the change of from a reductive state of active dissolution to an oxidizing state of pseudo passivation in low carbon steel.While in the final stage,all the steels transformed into the steady state of pseudo passivation.In the anaerobic solution,the formation ofα-Fe OOH was attributed to the chemical oxidization of the ferrous corrosion products and the final cathodic process only included the reduction ofα-Fe OOH,while in the aerobic solution,it included the reduction of oxygen andα-Fe OOH simultaneously.As the main corrosion products,the content ofα-Fe OOH was increased while that of Fe_6(OH)_(12)CO_3was decreased with increasing concentration of dissolved oxygen.The total corrosion mass loss of the steel was promoted with the increase of dissolved oxygen concentration. | Fang Xue Xin Wei Junhua Dong Ini-Ibehe Nabuk Etim Changgang Wang Wei Ke | 2018 | Journal of Materials Science & Technology2018，34，8： | 8 |
| 2 | Electrochemical noise analysis on the pit corrosion susceptibility of biodegradable AZ31 magnesium alloy in four types of simulated body solutions显示文摘Magnesium alloys have been investigated as biodegradable implant materials since the last century. Nonuniform degradation caused by local corrosion limits their application, and no appropriate technology has been used in the research. In this study, electrochemical noise has been used to study the pit corrosion on magnesium alloy AZ31 in four types of simulated body solutions, and the data have been analyzed using wavelet analysis and stochastic theory. Combining these with the conventional polarization curves, mass loss tests and scanning electron microscopy, the electrochemical noise results implied that AZ31 alloy in normal saline has the fastest corrosion rate, a high pit initiation rate, and maximum pit growth probability.In Hanks' balanced salt solution and phosphate-buffered saline, AZ31 alloy has a high pit initiation rate and larger pit growth probability, while in simulated body fluid, AZ31 alloy has the slowest corrosion rate, lowest pit initiation rate and smallest pit growth probability. | changgang wang liping wu fang xue rongyao ma ini-ibehe nabuk etim xuehui hao junhua dong wei ke | 2018 | Journal of Materials Science & Technology2018，34，10： | 4 |
| 3 | Effect of organic silicon quaternary ammonium salts on mitigating corrosion of reinforced steel induced by SRB in mild alkaline simulated concrete pore solution显示文摘The corrosion damage of 20 SiMn steel by sulphate-reducing bacteria(SRB)and the mitigation effect of organic silicon quaternary ammonium salt(OSA)were studied in sterilized mild alkaline simulated concrete pore solution(STR)with different additions of SRB and OSA at pH 9.35 for 28 days.Uniform corrosion occurs in STR medium while slight localized corrosion is observed in STR+OSA medium,and localized pitting corrosion occurs in STR+SRB and STR+SRB+OSA media.The largest pit depth reduces from 36.70μm in STR+SRB medium to 3.31μm in STR+SRB+OSA medium due to the mitigation effect of OSA.The corrosion rate reflected by weight loss and electrochemical impedance spectroscopy(EIS)results presents the order of STR | Ini-Ibehe Nabuk Etim Junhua Dong Jie Wei Chen Nan Durga Bhakt Pokharel Aniefiok Joseph Umoh Dake Xu Mingzhong Su Wei Ke | 2021 | Journal of Materials Science & Technology2021，，5： | 3 |
| 4 | Effect of applied potential on the microstructure, composition and corrosion resistance evolution of fluoride conversion film on AZ31 magnesium alloy显示文摘AZ31 magnesium(Mg) alloy was potentiostatic polarized in 0.1 M deaerated KF solution with pH 7.5 from-0.4 V to-1.4 V with an interval of-0.2 V. The polarization process was described by the potentiostatic current decay. The resultant film was analyzed by scanning electron microscopy(SEM), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS) and electrochemical impedance spectroscopy(EIS). The results demonstrated that the deposited film included a Mg(OH)_2/MgF_2 containing inner layer and a Mg(OH)-2/MgF_2/KMgF_3 comprising outer layer. The high polarized potential produced high content of MgF_2 but low content of KMgF_3 and thin film. Conversely, the low polarized potential produced small content of MgF_2 but high content of KMgF_3 and thick film. The optimal corrosion resistance of the deposited film was obtained at-1.4 V, which was closely related with the content of MgF_2 and KMgF_3 and the film thickness. | Liping Wu Changgang Wang Durga Bhakta Pokharel Ini-Ibehe Nabuk Etim Lin Zhao Junhua Dong Wei Ke Nan Chen | 2018 | Journal of Materials Science & Technology2018，34，11： | 3 |
| 5 | 基于氧传感器信号的用于研究空气/燃料比率变化的统计方法显示文摘给出了火花点火式发动机排气氧传感器(EGO)输出信号的实验结果。实验中采用V6、3.8 L、BUICK发动机且每个气缸中安装有一个氧传感器,以研究影响发动机消耗燃料的因素。应用LabView数据采集装置记录单个气缸废气以及主流尾气氧传感器的输出电压信号。对来自6个气缸变量的平均值采用统计的方法进行处理后,并与主流的EGO电压进行比较,确定了产生系统误差的因素。对左右两侧气缸信号平均值的差别进行比较发现,采用此种排气管结构的气缸中空气—燃料混合气平均值存在一些明显差别。根据数据和图表解释了统计的结果。研究表明,V字形排列的发动机两侧的气缸的空气和燃料混合气是不同的;在低速、高负荷和高辛烷燃料的情况下,右侧气缸具有比较稀的混合气;而在某些情况下两侧气缸具有相同的混合气。基于统计估计的方法,提出了一个可以用于估计V字形排列发动机左右两侧气缸中空气—燃料混合气的简单模型。此方法还可以应用于分析进气管和排气管的缺陷。 | Etim U Ubong Boyan Dimitrov | 2008 | 内燃机学报2008，26，1： | 3 |
| 6 | Intra-urban traffic and parking demand in UYO urban area显示文摘 | Obot J U Etim E E Atser J | 2009 | Global Journal of Social Sciences2009，8，2： | 1 |
| 7 | Grounding resistance for control of static electricity ignition hazards显示文摘 | Etim S. Udoetok Anh N. Nguyen | 2010 | Journal of Electrostatics2010，，1： | 1 |
| 8 | Reproduction,growth,mortality and yield of Tilapia mariae Boulenger 1899(Cichlidae)in a Nigerian rainforest wetland stream显示文摘 | King R P Etim L | | 0，，： | 1 |
| 9 | Low temperature smelting of lead metallic scrap显示文摘 | Margulis Etim V | 2000 | Journal for Exploration Mining and Metallurgy2000，53，2： | 1 |
| 10 | Effect of D-fructose on the in-vitro corrosion behavior of AZ31 magnesium alloy in simulated body fluid显示文摘The effect of addingd-fructose to simulated body fluid(SBF) on the corrosion behavior of AZ31 magnesium(Mg) alloy at 37.C and at a pH of 7.4 was studied by potentiodynamic polarization(PDP), electrochemical impedance spectroscopy(EIS), potentiostatic polarization and hydrogen(H2) collecting techniques,Raman spectroscopy technique, scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS), X-ray diffraction(XRD), X-ray photoelectron spectroscopy analysis(XPS) and Fourier transformed infrared(FTIR). The results demonstrated that the addition of fructose enhanced the deposition of phosphates forming thick and compact corrosion products, which inhibited the transmission of aggressive ions into the Mg substrate. As a result, both the anodic dissolution of Mg and negative difference effect(NDE) were suppressed. Thus, the corrosion resistance of AZ31 Mgalloy in SBF was significantly improved. | Durga Bhakta Pokharel Liping Wu Junhua Dong Xin Wei Ini-Ibehe Nabuk Etim Dhruba Babu Subedi Aniefiok Joseph Umoh Wei Ke | 2021 | Journal of Materials Science & Technology2021，，7： | 1 |
| 11 | A seminal study of the dynamics of a mudskipper ( Periophthalmus papilo ) population in the Cross River System, Nigeria显示文摘 | Etim L Brey T Arntz W 1996 | 1996 | Netherlands J of Aquatic Ecology1996，11，： | 1 |
| 12 | Vitamin E in the management of pancreatic cancer: A scoping review显示文摘Pancreatic cancer is the leading cause of cancer mortality worldwide.Research investigating effective management strategies for pancreatic cancer is ongoing.Vitamin E,consisting of both tocopherol and tocotrienol,has demonstrated debatable effects on pancreatic cancer cells.Therefore,this scoping review aims to summarize the effects of vitamin E on pancreatic cancer.In October 2022,a literature search was conducted using PubMed and Scopus since their inception.Original studies on the effects of vitamin E on pancreatic cancer,including cell cultures,animal models and human clinical trials,were considered for this review.The literature search found 75 articles on this topic,but only 24 articles met the inclusion criteria.The available evidence showed that vitamin E modulated proliferation,cell death,angiogenesis,metastasis and inflammation in pancreatic cancer cells.However,the safety and bioavailability concerns remain to be answered with more extensive preclinical and clinical studies.More in-depth analysis is necessary to investigate further the role of vitamin E in the management of pancreatic cancers. | Sophia Ogechi Ekeuku Effiong Paul Etim Kok-Lun Pang Kok-Yong Chin Chun-Wai Mai | 2023 | World Journal of Gastrointestinal Oncology2023，15，6： | 1 |
| 13 | Effects of urea and aqueous ammonia treatment on the composition and nutritive value of maize residues显示文摘 | Oji U I Etim H E Okoye F C | 2007 | Small Ruminant Research2007，69，： | 1 |
| 14 | The performance of Nigeria’s fishery sector: an empirical analysis, 1976–85显示文摘 | Dr. H. Ekpo Akpan E. Etim Lawrence | 1989 | Geojournal1989，，3： | 1 |
| 15 | Effects of urea and aqueous ammonia treatment on the composition and nutritive value of maize residues显示文摘 | Oji U I Etim H E Okoye F C | 2007 | Small Ruminant Research2007，69，123： | 1 |
| 16 | A seminal study of the dynamics of a mudskipper (Periophthalmus papilio) population in the Cross River System, Nigeria显示文摘 | Etim L Brey T Arntz 1996 | 1996 | Netherlands J of Aquatic Ecology1996，30，1： | 1 |
| 17 | Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution显示文摘An experimental model for simulating the corrosion of carbon steel fasteners(bolt and nut) composed of a contact carbon steel electrode(CCSE) and an exposed bare carbon steel plate electrode(BCSE) was designed. The effect of coupling on the corrosion process of the galvanically coupled carbon steel electrode was evaluated and compared with the self-corrosion process observed independently at the exposed and contact regions. Results obtained indicated that at an equal area ratio and uncoupled conditions, the corrosion rate is accelerated in the surface directly exposed to bulk solution compared to the bolt surface in contact with the nut. A coupling current was recorded when the exposed surface(BCSE) was electrically connected with the contact surface(CCSE);with the CCSE acting as the anode thereby suppressing the corrosion process in the exposed surface. By implication, the galvanic coupling between CCSE and BCSE increased the corrosion rate of CCSE. The diff erence in oxygen supply was responsible for the coupling effect observed in the system as there was no decrease in the solution pH. Moreover, varying the cathode-to-anode area( S c/S a) ratio significantly influenced the corrosion current density as increased S c/S a ratio resulted in an accelerated galvanic corrosion process. The corroded surfaces and interfaces were analysed using stereomicroscopy and scanning electron microscopy. X-ray diff ractometry was adopted for corrosion product characterization. The results obtained showed supportive evidence of the corrosion behaviour in carbon steel fasteners. | Enobong Felix Daniel Junhua Dong Xiaofang Li Ini-Ibehe Nabuk Etim Inime Ime Udoh Rongyao Ma Lei Chen Changgang Wang | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，4： | 1 |
| 18 | Growth and mortality,recruitment and yield of the fresh-water shrimp(Crustacea,Palaemonidae) in the Fahe reservoir,Cote d'Ivoire,West Africa显示文摘 | Lawrence Etim Yacouba Sankare | 1998 | Fisheries Research1998，，38： | 1 |
| 19 | Effects of urea and aqueous ammonia treatment on the composition and nutritive value of maize residues显示文摘 | U.I. Oji H.E. Etim F.C. Okoye | 2006 | Small Ruminant Research2006，，1： | 1 |
| 20 | GIS cellular automata using Artificial neural network for land use change simulation of Lagos, Nigeria显示文摘 | Onuwa Okwuashi Mfon Isong Etim Eyo | 2012 | Journal of Geography and Geology2012，4，2： | 1 |
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