Subjects: Library Science，Information Science >> Library Science submitted time 2023-08-29
Abstract： Abstract: Purpose/significance With the development of digital technology and the needs of real life, the metaverse is gradually emerging. When enterprises rush to enter this field, how to let ordinary users have an interest in understanding the metaverse and improve their acceptance of it is crucial. Method/process Therefore, from the perspective of gamification, this paper takes the metaverse activity launched by the Library of Central China Normal University as an opportunity to collect data of users participating in the activity by using Scene experiment method, and explores the influence mechanism of gamification users' acceptance of the metaverse based on the above data. Result/conclusion The results show that gamification can influence the acceptance of the meta-universe through the mediation of emotion. Gamification can have a direct or indirect effect on emotion. On the one hand, gamification can bring users a sense of immersion, which in turn will bring novel experiences, indirectly making users produce positive emotions. On the other hand, gamification directly affects the emotions of the user, and in this process, the sense of accomplishment plays a moderating role.
Peer Review Status:
Awaiting Review
Subjects: Medicine, Pharmacy >> Preventive Medicine and Hygienics submitted time 2023-08-16 Cooperative journals: 《中国全科医学》
Abstract： Background Elevated dyslipidemia during pregnancy can adversely affect maternal and child health. It not only increases the risk of preeclampsia，gestational diabetes mellitus（GDM），hypertriglyceridemic pancreatitis，late abortion，premature delivery and macrosomia，but also significantly increases the risk of postnatal cardiovascular disease. Objective To analyze the distributional characteristics of dyslipidemia in the first，second and third trimesters of pregnancy and the predictive value of early lipid levels for dyslipidemia in the second and third trimesters of pregnancy. Methods This was a single-center retrospective study，which included singleton pregnant women who were enrolled in Beijing Obstetrics and Gynecology Hospital，Capital Medical University from January 2018 to June 2019 for obstetrics checkups until delivery. Clinical data and lipid data〔total cholesterol（TC），triacylglycerol（TG），low-density lipoprotein cholesterol（LDL-C），and high-density lipoprotein cholesterol（HDL-C）〕were collected in the first，second and third trimesters of pregnancy. The reference range of lipids in department of obstetrics，Beijing Obstetrics and Gynecology Hospital，Capital Medical University was used as the diagnostic standard for dyslipidemia，including high total cholesterolemia，high triacylglycerolemia，low HDL-cholesterolemia and high LDL-cholesterolemia. The correlation between lipid levels in the first trimester of pregnancy and dyslipidemia in the second and third trimesters of pregnancy was analyzed by using binary Logistic regression，and the receiver operating characteristics（ROC）curves of the subjects were plotted to obtain the area under ROC curve（AUC），to evaluate the predictive value of the lipid levels in the first trimester of pregnancy for dyslipidemia in the second and third trimesters of pregnancy，and to determine the optimal cut-off value according to the sensitivity and specificity. Results A total of 8 511 singleton pregnant women were included in the study，with an average age of（31.7±3.9）years and an average pre pregnancy BMI of（21.7±3.2）kg/m2 . Among them，988（11.6%）were of low pre-pregnancy body mass，5 568（65.4%）were of normal pre-pregnancy body mass，1 271（14.9%）were overweight，366（4.3%）were obese，1 415（16.7%） were with GDM，and 650（7.6%）were with hypertensive disorders of pregnancy（HDP）. The levels of TC，TG and LDL-C in the second and third trimesters of pregnancy were higher than those in the first trimester of pregnancy（P<0.05）. The level of HDL-C in the third trimester of pregnancy was higher than that in the first trimester of pregnancy，but lower than that in the second trimester of pregnancy（P<0.05）. The prevalence of dyslipidemia in the first trimester of pregnancy was 23.4%（1990/8511），and the prevalence of dyslipidemia in the second and third trimesters of pregnancy was lower than that in the first trimester of pregnancy（P<0.05）. The prevalence of dyslipidemia in overweight and obese pregnant women in the first trimester of pregnancy was higher than that in pregnant women with normal pre-pregnancy body mass，but there was no statistical difference in the prevalence of dyslipidemia in the third trimester of pregnancy（P>0.05）. The prevalence of dyslipidemia in first and second trimesters of pregnancy in the GDM group was higher than that in the non-GDM group，and the prevalence of dyslipidemia in first，second and third trimesters of pregnancy in HDP group was higher than the non-HDP group（P<0.05）. After excluding pregnancy comorbidities and complications that may affect blood lipids，the optimal cut-off values for predicting dyslipidemia in the second trimester of pregnancy were TC of 4.485 mmol/L（AUC=0.854），TG of 1.325 mmo/L（AUC=0.864），HDL-C of 1.275 mmol/L（AUC=0.908），and LDL-C of 2.265 mmol/L（AUC=0.823），respectively；the optimal cut-off values for predicting dyslipidemia in the third trimester of pregnancy were TC of 4.485 mmol/L（AUC=0.809），TG of 1.145 mmol/L（AUC=0.833），HDL-C of 1.285 mmol/L（AUC=0.851），LDL-C of 2.195 mmol/L（AUC=0.766）. Conclusion The prevalence of dyslipidemia did not increase during pregnancy. There were significant differences in the prevalence of dyslipidemia during pregnancy among pregnant women with different pre-pregnancy BMI，between GDM and non-GDM pregnant women，between HDP and non-HDP pregnant women，respectively. The blood lipid level in the first trimester was helpful to predict the occurrence of dyslipidemia in the second and third trimesters of pregnancy.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2023-05-05 Cooperative journals: 《中国全科医学》
Abstract： Background Adequate gestational weight gain（GWG） is critical for maternal and child health. The Institute of Medicine（IOM） standard has long been adopted in clinical practice to guide GWG in China. Since October 2022，China has officially promulgated and adopted the Standard of Recommendation for Weight Gain during Pregnancy Period（WS/T 801-2022）（herein after referred to as SRWGPP） to guide GWG. Objective To compare the distribution of GWG recommended by the SRWGPP and IOM used for Chinese singleton pregnant women and associated adverse pregnancy outcomes，providing clinical evidence for further application of the SRWGPP. Methods The data of this study were from a prospective cohort study involving singleton pregnant women who gave birth in Beijing Obstetrics and Gynecology Hospital，Capital Medical University from May 2020 to September 2021 and participated in the Beijing birth cohort study（registration number：ChiCTR220058395）. Baseline information was collected from the participants，and the incidence of pregnancy complications and outcomes was obtained from the clinical health record system. We compared the distribution of GWG of the participants based on the criteria by the SRWGPP and the IOM guidelines. Then we divided the participants into five groups：insufficient weight gain（IOM+IW），insufficient weight gain+appropriate weight gain（IOM+IW+AW），appropriate weight gain（IOM+AW），appropriate weight gain+ excessive weight gain（IOM+AW+EW），and excessive weight gain（IOM+EW）. The risk of adverse pregnancy outcomes〔large for gestational age（LGA），small for gestational age（SGA），macrosomia，low birth weight，and preterm birth〕 was analyzed after adjusting for confounding factors. Results A total of 11839 singleton pregnant women were included. The proportions of women with insufficient，appropriate，and excessive GWG were 36.7%（4 339/11 839），38.9%（4 601/11 839），and 24.5%（2 899/11 839），respectively，according to the IOM standard，and were 16.2% （1 913/11 839），45.0%（5 332/11 839），and 38.8%（4 594/11 839），respectively，according to the SRWGPP. The proportions of pregnant women in groups of IOM+IW，IOM+IW+AW，IOM+AW，IOM+AW+EW and IOM+EW were 16.2%（1 913/11 839），20.5%（2 426/11 839），24.6%（2 907/11 839），14.3%（1 694/11 839） and 24.5%（2 899/11 839），respectively. The results from multivariate logistic regression analysis showed that the risk of overall adverse pregnancy outcomes in IOM+AW+EW group was higher than that in IOM+AW group〔aOR=1.23，95%CI（1.07，1.41），P<0.05〕. There was no difference in the risk of overall adverse pregnancy outcomes between IOM+IW+AW group and IOM+AW group〔aOR=1.02，95%CI（0.89，1.16），P<0.05〕. The risk of LGA，macrosomia，cesarean section，or the overall adverse pregnancy outcomes was higher in IOM+EW group than that in IOM+AW group either in the first or second trimesters（P<0.05）. Conclusion The adoption of the SRWGPP will allow more pregnant women to meet the appropriate range for GWG，and their pregnancy outcomes will be better than those using the IOM standard. Therefore，the SRWGPP is more applicable to Chinese pregnant women for pregnancy weight management. Especially，it is critical to avoid excessive GWG in the first and second trimesters.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2023-04-03 Cooperative journals: 《中国全科医学》
Abstract： Background Macrosomia is not only harmful to the pregnant women and newborns，but also to the long-term metabolic health of the offspring. Maternal body mass is closely associated with pregnancy outcomes，overweight and obese pregnant women are often associated with dyslipidemia，while elevated blood lipid levels during pregnancy can affect the intrauterine environment and neonatal birth weight has not been investigated. Objective To analyze the association between blood lipid levels and macrosomia in pregnant women with different pre-pregnancy body mass index（BMI）. Methods A total of 5 287 singleton pregnant women who were registered at department of obstetrics of Beijing Obstetrics and Gynecology Hospital，Capital Medical University until delivery from January 2018 to June 2019 and met the inclusion and exclusion criteria were included in the single-center retrospective study，and divided into low-body-mass pregnant women with a non-macrosomia group （group A， n=731） and with a macrosomia group（group B， n=27），normal-body-mass pregnant women with a nonmacrosomia group（group C， n=3 539） and with a macrosomia group （group D， n=243），overweight and obese pregnant women with a non-macrosomia group（group E， n=675）and with a macrosomia group（group F， n=72） according to maternal pre-pregnancy BMI and neonatal birth weight. Relevant clinical and laboratory data of pregnant women were collected for statistical analysis. Binary Logistic regression analysis was used to explore the association between blood lipid levels and macrosomia in pregnant women with different pre-pregnancy BMI. Results The level of high-density lipoprotein cholesterol （HDL-C） in the third trimester of pregnancy in group B was lower than group A（ P<0.05）. The levels of total cholesterol（TC）in the first trimester and triglyceride（TG） in the third trimester in group D were higher than group C（ P<0.05），while the levels of HDL-C in the second and third trimesters were lower than group C（ P<0.05）. The TG levels in the first，second and third trimesters of pregnancy in group F were higher than group E（ P<0.05），while HDL-C levels in the second and third trimesters were lower than group E（ P<0.05）. Binary Logistic regression analysis showed that HDL-C level in the third trimester〔 OR=0.256，95%CI （0.075，0.871）〕 was the influencing factor of macrosomia in low body mass pre-pregnancy women（ P<0.05）.HDL-C levels in the second and third trimesters〔 OR=0.661，95%CI（0.450，0.971）； OR=0.406，95%CI（0.271，0.610）〕were the influencing factors of macrosomia in normal body mass pre-pregnancy women（ P<0.05）. TG levels in the first，second and third trimesters〔 OR=1.546，95%CI（1.070，2.234）； OR=1.399，95%CI（1.019，1.758）； OR=1.289，95%CI（1.072，1.550）〕 were the influencing factors of macrosomia in overweight and obese pre-pregnancy women（ P<0.05）. Conclusion For pre-pregnancy women with low and normal body mass，low HDL-C level during pregnancy is associated with an increased risk for macrosomia，while for overweight and obese pre-pregnancy women，high TG level during pregnancy is associated with an increased risk of macrosomia. For pregnant women with large fetuses or high risk of macrosomia during maternal examination，it is necessary to emphasize the detection and control of blood lipid levels.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《中国腐蚀与防护学报》
Abstract： The influence of short-term storage in dry atmosphere on the corrosion behavior of copper was investigated by means of potentiodynamic polarization, electrochemical impedance spectroscopy, capacitance measurement and array electrode technique. It was found that the surface film on copper presented a p-type semiconductor structure, and the carrier concentration decreased after short-term storage. At the same time, the corrosion potential increased, the corrosion current density decreased, and the surface film inhibited both the cathodic and anodic process. Copper displayed the typical characteristics of localized corrosion beneath a NaCl droplet. After storage, the wet-ability, the corrosion activity as well as the overall average corrosion intensity are reduced, but the local corrosion intensity enhanced.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《中国腐蚀与防护学报》
Abstract： The debonding process of organic coatings with desired artificial defects in 3.5%NaCl solution was studied by means of wire beam electrode (WBE) method and electrochemical impedance spectroscopy (EIS) technique. The purpose was to reveal the relevant debonding mechanism of organic coatings in the area nearby water-line via analyzing the current distribution and the variation of impedance spectroscopy during the experiment. It was found that, either the artificial defect or inherent defect could accelerate cathodic debonding rate of the coating around the defects. Besides, due to the effect of waterline, a coating debonding, which initiated from one inherent defect will expand towards the waterline. The coating debonding occurred firstly on the area below the waterline, and then later above the waterline. The coating debonding rate on the area above waterline was controlled by the permeation rate of electrolyte through the coating.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract： none
Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Fake emotion refers to the process of emotional interaction that people show positive or negative emotions in disguise to amplify or suppress the original emotions. Fake emotion is the result of a strategic choice. The emotion displayed may not happen at the moment, but sometimes it can be persuasive. Fake emotions are common in daily life, but the present research on it is relatively scattered, and there are still some disputes about the interpersonal influence of fake emotion as well as its mechanism. The existing literature mainly concerns four aspects of the interpersonal effect of fake emotion, including the game process, pro-social behavior situation, organizational situation, and leadership effect. The related mechanisms include the affective reaction of the emotion receivers and the inner process of “speculating others’ emotions by their own standard”. Future research can focus more on the deep and systematic study of fake emotion on the emotional receiver, group fake emotion, the valence of fake emotion, cognitive neural mechanism, culture background, and so on.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-18 Cooperative journals: 《材料研究学报》
Abstract： Corrosion behavior of carbon steel beneath seawater droplets was investigated by using the wire electrode technique (WBE). It was found that anodic and cathodic current decreased gradually with the increasing time, then eventually kept stable. Furthermore, the current distribution over the WBE surface beneath seawater droplets of different sizes was studied. Beneath a smaller droplet, the carbon steel was more easily to form an asymmetric electrochemical area. In addition, a concept of droplet spreadability was defined. The average current density increased exponentially with the increasing droplet spreadability, the maximum value and the standard deviation of the anodic current density increased linearly, at the same time, the corrosion intensity enhanced.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-18 Cooperative journals: 《材料研究学报》
Abstract： The semi-solid ZCuSn10 alloy billets were prepared with strain induced melt activated (SIMA) method involved with hot rolling and reheating process. The microstructure evolution process and spheroidizing mechanism of α(Cu) phase were studied by means of optical microscope, scanning electron microscope and image analysis software. The results show that when a hot rolled ZCuSn10 copper alloy billet with a deformation rate 16%was reheated at 930℃, of which the semi-solid primary phase spheroidized gradually with the increasing holding time; while the average grain size of the copper alloy decreases firstly with time from 68.24 μm for 8 min to 62.31 μm for 10 min and then increases to 71.09 μm for 25 min; the liquid fraction increases from 18.14% for 8 min to 25.32% for 25 min; the shape factor decreases firstly with time from 2.91 for 8 min to 1.67 for 15 min and then increases to 2.43 for 25 min. The alloy exhibits the best semi-solid microstructure for 15 min holding with an average grain size 65.64 μm, a liquid fraction 23.66% and a shape factor 1.67. The microstructure evolution mechanism involves with merge of grains and growth as well as atom diffusion leading to grain growth and spheroidization.
Subjects: Geosciences >> Geography submitted time 2022-03-28 Cooperative journals: 《干旱区研究》
Abstract：采用空间代替时间法，对民勤青土湖地区不同年限退耕地（退耕1 a、2 a、4 a、8 a、13 a、20 a、30 a、40 a和CK）土壤水分变化与植被演替特征进行了调查与分析。结果表明：（1）随退耕年限增加，土壤含水量整体呈先减少后增加再逐渐趋于稳定。（2）随退耕年限增加，个体数、类群数和Margalef丰富度指数呈波动式下降的趋势；Shannon多样性指数和Pielou均匀度指数总体趋势先增加后减小，再逐渐趋于稳定；Simpson优势度指数整体变化幅度较小，最终呈稳定的趋势。（3）随退耕年限增加，植物群落经历了地肤盐生草狗尾草骆驼蒿小叶碱蓬黑果枸杞红砂盐爪爪的演替过程。（4）Simpson优势度指数和0~20 cm土层土壤含水量呈极显著负相关，Shannon多样性指数和0~20 cm土层土壤含水量呈极显著正相关，但与20~40 cm土层土壤含水量之间相关性不显著；类群数（S）Margalef丰富度指数、Pielou均匀度指数和土壤含水量之间相关性不显著。可见，干旱区植被自然演替取决于0~20cm土层土壤的含水量。
Subjects: Psychology >> Applied Psychology submitted time 2020-05-10
Abstract： Fake emotion refers to the process of emotional interaction that people show positive or negative emotions in disguise to amplify or suppress the original emotions. Fake emotion is the result of a strategic choice. The emotion displayed may not happen at the moment, but sometimes it can be persuasive. Fake emotions are common in daily life, but the present research on it is relatively scattered, and there are still some disputes about the interpersonal influence of fake emotion as well as its mechanism. The existing literature mainly concerns four aspects of the interpersonal effect of fake emotion, including the game process, pro-social behavior situation, organizational situation, and leadership effect. The related mechanisms include the affective reaction of the emotion receivers and the inner process of "speculating others’ emotions by their own standard". Future research can focus more on the deep and systematic study of fake emotion on the emotional receiver, group fake emotion, the valence of fake emotion, cognitive neural mechanism, culture background, and so on. "
Peer Review Status:Awaiting Review
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2019-03-11 Cooperative journals: 《协和医学杂志》
Abstract：目的术中血液回收技术(intraoperative blood salvage, IBS)是临床常用的一种血液保护技术，但术后自体血液回输存在肌松药物残留问题。顺苯磺酸阿曲库铰(cis-atracurium besilate, Cisa)是一种新型肌松药物，本研究观察Lisa应用于接受IBS患者的临床安全性。方法前瞻性分析比较2017年3月至2017年6月50例在北京积水潭医院脊柱科接受全身麻醉下腰椎减压内固定手术的腰椎间盘患者50例。患者顺序纳人，前25例进人试验组，后25例进人对照组。全身麻醉后应用Lisa作为肌松药，采用IBS技术于术中采集术野自体血并洗涤。术后人恢复室后，常规监测四个成串刺激比(train-of-four stimulation ratio, TOF)以评估肌肉恢复情况，拔除气管插管后每隔5 min记录TOF值，共观察40 min。试验组患者于拔除气管插管后一次性输人术中收集的自体血，对照组于观察结束后回输自体血。分析并比较两组患者术前及观察结束时动脉血氧分压(arterial partial pressure of oxygen, Pa0=)和二氧化碳分压(partial pressure of carbon dioxide in artery, PaCO=)用于评估呼吸功能恢复情况。结果所有患者完成全部观察内容，其中男女比例1:1，年龄(55. 1士11. 1)岁，体重(72. 7士9. 8) hg,两组基线资料均衡，TOF值随时间推迟呈上升趋势，但两组患者在40 min观察点上TOF增加值无统计学差异[(9.6士7.3)%比(9. 5士8. 1)%,尸= 0. 963 ]。两组患者在观察期结束时均出现一定程度的呼吸功能不全，但两组间PaCO=;#30;,,} ]4.4 (2.0,8. 0} mm Hg比4.8 (0, 7. 1) mm Hg, P=0.312)和Pa0=}i,.}.} } 3. 2(一2.4, 7.9) mm Hg比7. 2(一1.6, 13.0) mm Hg, P=0. 133]并无统计学差异。结论全身麻醉下接受IBS的患者使用Lisa作为肌松药物是安全有效的。
Subjects: Biology >> Bioengineering submitted time 2018-10-09 Cooperative journals: 《中国生物工程杂志》
Abstract：黄曲霉毒素B1（Aflatoxin B1，AFB1）是一种毒性强、污染广的真菌毒素，建立高效、准确、快速的AFB1检测方法具有重要意义。利用噬菌粒-辅助噬菌体展示系统构建单链抗体(single chain variable fragment，scFv)文库，应用“淘选-洗脱”的策略，是筛选高亲和配体的常用方法之一。同时结合同源建模和分子对接等计算机辅助手段，分析得到抗体与抗原的结合位点与关键氨基酸，为在基因水平改造抗体提供基础。本研究从AFB1-BSA免疫小鼠的脾细胞内扩增重链可变区和轻链可变区，将组合成的scFv片段插入噬菌粒pCANTAB5e中，构建了噬菌体展示单链抗体文库，以不同浓度的AFB1-OVA作为抗原，从文库中筛选到一株亲和力较好的抗AFB1单链抗体scFv，其亲和常数为8×105 L/mol；根据同源建模和分子对接发现，与抗原AFB1结合时，scFv中Tyr33、Ser52和Tyr102起关键作用，分别以π-π共轭键、氢键和范德华力与AFB1结合。
Subjects: Biology >> Ecology submitted time 2018-06-09 Cooperative journals: 《生态学报》
Abstract：第九届国际生态系统服务大会（9th Ecosystem Services Partnership World Conference，ESP9）于2017年12月11日-12月15日在中国深圳召开。本次会议主题为"增强生态系统服务，促进生态文明建设"，旨在探讨生态系统服务科学热点问题，交流最新研究成果，并寻求基于自然的绿色解决方案，进一步推动生态修复与环境保护政策及实践的有机结合，为加强生态修复与生态治理国际合作提供良好交流平台。本文旨在对本次会议的7场特邀报告，30个主题会场内容进行综述，内容围绕当前生态系统服务领域的前沿与热点领域展开，包括生态系统保护管理及可持续性、生物多样性、生态系统脆弱性、生态系统服务评估与模型、气候变化、土地利用与景观、政策与决策分析等方向。
Subjects: Materials Science >> Materials Science (General) Subjects: Geosciences >> Marine Sciences submitted time 2016-11-14 Cooperative journals: 《中国腐蚀与防护学报》
Abstract：摘要：为了可靠测定和解析锈层下金属腐蚀电化学，分别利用失重法和电化学方法对海水中不同浸泡时间的碳钢电极的腐蚀行为和腐蚀速率规律进行了研究。发现对于长期浸泡的碳钢电极，失重法和电化学方法得到的腐蚀速率结果见存在很大差异。利用XRD测定了长期浸泡后锈层成分的变化，发现长期浸泡碳钢电极锈层中的电化学活性成分β-FeOOH在测试过程中发生还原反应导致利用电化学方法测得的碳钢腐蚀速率大于失重法的结果，并且随浸泡时间的延长，这一偏差也增大。对长期浸泡碳钢电极进行-25μA/cm2阴极恒电流预极化处理后发现，随着浸泡时间的延长极化时间也延长，同时，经过预处理之后的碳钢电极电化学方法测得的腐蚀速率与失重法的结果间具有一致的变化规律，能够减小电化学方法对失重法测试结果的偏差。
Subjects: Materials Science >> Materials Science (General) Subjects: Geosciences >> Marine Sciences submitted time 2016-11-07 Cooperative journals: 《中国腐蚀与防护学报》
Abstract：摘要: 本文综述了Ag/AgCl固体参比电极研究与应用的现状与进展，包括常规尺寸与微尺寸固体参比电极的制作及应用。重点介绍了影响固体参比电极电位稳定性及持久性的因素和对参比电极进行评价的技术，针对存在的问题讨论了改善参比电极性能的方法。
Subjects: Materials Science >> Materials Science (General) submitted time 2016-11-07 Cooperative journals: 《中国腐蚀与防护学报》
Abstract：采用动电位极化技术（PDS）、电化学交流阻抗谱技术（EIS）、电容测量技术以及阵列电极技术研究了铜的短期贮存对其腐蚀电化学行为的影响。研究表明，金属铜表面膜呈现p型半导体结构，经过短期贮存后载流子浓度减小，腐蚀电位正移，腐蚀电流密度下降，表面膜对腐蚀阴极过程、阳极过程均有抑制作用。铜在NaCl液滴下呈现典型的局部腐蚀特征，经过贮存后，电极表面润湿性减弱，腐蚀活性降低、总体平均腐蚀强度减弱，但是局部腐蚀强度反而增强。
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