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石墨烯吸附材料结构性质解析及其在菜籽油脱色中的应用

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粮油食品科技 2024年第4期32卷 105-111页

作者：李晓澄吕亚萍叶展南京航空航天大学材料科学与技术学院江苏南京210016 江南大学食品学院江苏无锡214122

为了克服活性白土在油脂工业脱色中的操作温度高、残油率大、废白土处理困难等缺点,开发超强吸附材料石墨烯作为新型吸附剂用于油脂脱色。采用扫描电子显微镜、傅立叶红外光谱仪和显微共聚焦拉曼光谱仪等仪器对石墨烯纳米片(GNP)和氧化... 详细信息

为了克服活性白土在油脂工业脱色中的操作温度高、残油率大、废白土处理困难等缺点,开发超强吸附材料石墨烯作为新型吸附剂用于油脂脱色。采用扫描电子显微镜、傅立叶红外光谱仪和显微共聚焦拉曼光谱仪等仪器对石墨烯纳米片(GNP)和氧化石墨烯(GO)的结构与表面性质分析进行了表征。在明确石墨烯材料结构特征的基础上,将其用于菜籽油的脱色,并探讨了石墨烯种类、添加量,反应压力、温度以及反应时间等因素对石墨烯在油脂体系脱色效果的影响。结果表明:与GO相比,GNP对菜籽油脱色效果更佳,并且在低温(45℃)条件下对油脂中叶绿素表现出独特吸附性能。单因素结果表明,在GNP添加量2.0%(wt)、温度45℃、吸附时间5min的优化条件下,GNP可以脱除油中80.6%的叶绿素。GNP作吸附剂用于油脂脱色具有反应温度低、吸附时间短的优势,在油脂低温适度加工中具有潜在应用前景。

关键词：石墨烯结构性质菜籽油叶绿素低温脱色

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TACE术后应用阿帕替尼联合胸腺肽α1对原发性肝癌患者的疗效影响

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四川生理科学杂志 2024年第1期46卷 161-164页

作者：吕亚丹洛阳市东方人民医院肿瘤血液介入二病区河南洛阳471000

目的:观察肝动脉插管化疗栓塞术(Transcatheter arterial chemoembolization,TACE)后应用阿帕替尼联合胸腺肽α1对原发性肝癌(Primary hepatic carcinoma,PHC)患者的疗效影响。方法:选取2020年2月至2022年2月期间我院收治的90例PHC患者作为研究对象,按照随机数字表法分为观察组和对照组,各45例。两组患者均接受TACE后,对照组选择晨间皮下注射胸腺肽α1,观察组在对照组的基础上于晚饭后增加口服阿帕替尼。治疗后,复查上腹增强CT或MRI,根据动脉期强化显影,评估两组患者临床疗效。比较治疗前后两组患者肝功能指标及血清肿瘤标志物。结果:观察组客观有效率(Objective response rate,ORR)和疾病控制率(Disease control rate,DCR)均明显高于对照组(P0.05)。结论:PHC患者TACE术后,采用阿帕替尼联合胸腺肽α1治疗,可有效提高TACE的疾病控制率和治疗有效率,降低血清肿瘤标志物水平,促进肝功能恢复,且用药安全性较高。

关键词：阿帕替尼胸腺肽α1 原发性肝癌肝动脉插管化疗栓塞术

1+X证书制度背景下高职院校校企合作模式探究

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交通企业管理 2024年第5期39卷 112-114页

作者：吕亚楠江苏航空职业技术学院

随着我国高等教育的快速发展和经济结构的转型升级,高职教育作为培养技能型人才的重要渠道逐渐受到社会的关注。为了强化学生的实践能力和职业技能,提高其就业竞争力,1+X证书制度在高职院校中应运而生。校企合作模式作为高职院校与企业... 详细信息

随着我国高等教育的快速发展和经济结构的转型升级,高职教育作为培养技能型人才的重要渠道逐渐受到社会的关注。为了强化学生的实践能力和职业技能,提高其就业竞争力,1+X证书制度在高职院校中应运而生。校企合作模式作为高职院校与企业深度合作的重要形式,对实现1+X证书制度的有效落实具有重要意义。因此,研究1+X证书制度背景下高职院校校企合作模式,对于促进高职院校与企业的深度融合、推动人才培养模式的创新,具有重要的现实意义和实践价值。

关键词：高职院校 1+X证书制度校企合作模式深度融合优化路径

Cox-Ingersoll-Ross过程对数似然比的精细大偏差

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数学杂志 2024年第1期44卷 35-46页

作者：吕亚倩赵守江三峡大学理学院湖北宜昌443002

本文研究了平稳状态下Cox-Ingersoll-Ross过程在原假设和备择假设下对数似然比的精细大偏差问题.利用测度变换和特征函数技巧,本文得到了对数似然比的完全展开式.

关键词： Cox-Ingersoll-Ross过程对数似然比精细大偏差

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建构主义框架下高校英语信息化教学研究

鄂州大学学报 2024年第5期31卷 85-86页

作者：吕亚玲吉志强安阳学院外国语学院河南安阳455000 安阳学院计算机科学与数学学院河南安阳455000

在新时代背景下,教育信息化能够使学习方式与教学形式更加多样灵活,转变传统的英语教学方式,成为英语教学的重要依托。针对目前高校英语存在的问题,英语教学应通过构建教学平台、优化教学形式、革新评价体系等对策,帮助学生更好地汲取... 详细信息

在新时代背景下,教育信息化能够使学习方式与教学形式更加多样灵活,转变传统的英语教学方式,成为英语教学的重要依托。针对目前高校英语存在的问题,英语教学应通过构建教学平台、优化教学形式、革新评价体系等对策,帮助学生更好地汲取网络资源,提高英语学习效率。

关键词：建构主义高校英语信息化教学

Coalescence Suppression in Flowing Polymer Blends Using Silica Rods with Different Surface Chemistries

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Chinese Journal of Polymer Science 2021年第4期39卷 474-483,I0007页

作者： Si-Ying Xiang Li-Sa-ya Ye ya-Jiang Huang ya-Dong lv Mi-Qiu Kong Guang-Xian Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering of ChinaSichuan UniversityChengdu 610065China

Silica rods with homogeneous(hydrophilic or hydrophobic)and amphiphilic surface properties were synthesized and their efficiencies in suppressing the flow-induced droplet coalescence of immiscible polyisobutylene(PIB)/polydimethylsiloxane(PDMS)blends were evaluated via in situ visualization *** flow-induced coalescence behavior of blends was found to strongly depend on the surface nature and concentration of silica rods added as well as the blend *** a trace amount of rods promoted coalescence,all kinds of rods demonstrated a morphology refinement effect at high rod *** compatibilization effects were obtained at high rod concentrations,especially for hydrophilic and amphiphilic *** on confocal laser scanning microscopy results,these phenomena observed were interpreted reasonably in terms of the selective distribution and aggregation of silica rods,which were suggested to be decisive for the stabilization mechanism and efficiency of these rods.

关键词： Immiscible polymer blends Flow Morphology Silica rods Surface chemistry

High-temperature Thermo-oxidative Aging of Vulcanized Natural Rubber Nanocomposites:Evolution of Microstructure and Mechanical Properties

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Chinese Journal of Polymer Science 2023年第8期41卷 1287-1297,I0010页

作者： Zhou-Xian Li Yi-Ran Kong Xiang-Fei Chen ya-Jiang Huang ya-Dong lv Guang-Xian Li College of polymer science and engineering State key laboratory of polymer materials engineering of ChinaSichuan UniversityChengdu 610065China

The aging of natural rubber(NR)at high temperatures will seriously affect its service lifetime in many key *** the present work,the changes in microstructure and mechanical properties of semi-efficient vulcanized NR/carbon black(CB)vulcanizates during thermooxidative aging at high temperatures(150-200℃)and a moderate temperature(95℃)were *** high temperatures,a two-stage aging behavior,which was characteristic of a first rapid decline and then a continuous rise in the crosslinking density(ve),was identified and was found to be closely related to the depletion behavior of *** surface cracking behavior observed in the second stage of high-temperature aging was discussed in terms of the grafting reaction of macromolecular radicals on CB particles and thermal *** contrast,the aging of NR at moderate temperatures was much mild,which featured a continuous increase in ve and an oxidation mechanism dominated by peroxy radicals attacking double *** general,the mechanical properties of NR vulcanizates during high-temperature aging depended on the competition effects of structural evolution in the crosslinked network and oxidation-induced chain scission.

关键词： Natural rubber nanocomposites High-temperature Thermo-oxidative aging

Mechanism of high temperature reduction on iron carbide preparation with low-grade siderite

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Journal of Iron and Steel Research International 2022年第9期29卷 1357-1367页

作者： Dong Chen ya-nan lv Wei Zhao Fei-bao Wu Wei-ang Ying School of Iron and Steel Soochow UniversitySuzhou 215021JiangsuChina Department of Mechanical and Electrical Engineering Suzhou Institute of Industrial TechnologySuzhou 215104JiangsuChina

The carburization roasting followed by magnetic separation is a feasible method to utilize low-grade siderite *** order to enhance the carburization efficiency and separation effciency,high temperature reduction was carried out,and its mechanism was demonstrated by measuring carburization index,phase change,and microstructure under a carbon-sulfur infrared analyzer,an X-ray diffractometer,and a metallurgical *** results show that both the carburization effciency of siderite pellet and the separation efficiency of iron carbide from gangue are very ***,high temperature reduction is a useful way to enhance the carburization efficiency,as it can accelerate the reduction reaction rate and carburization reaction ***,high temperature reduction can improve the growth of iron carbide particle,promote the carburization efficiency,and strengthen the sodium modification reactions,thereby greatly accelerating the separation efficiency of iron carbide and *** the siderite pellets were reduced at 1050℃ for 90 min and carburized at 650℃ for 120 min,the carburization index of carburized pellets reached *** magnetic separation treatment,an electric furnace burden assaying 83.12 wt.%Fe and 6.96 wt.%C was prepared,and the corresponding iron recovery rate was 95.43%.The high temperature reduction is promisingly adopted to promote the utilization of low-grade siderite ores using carburization-magnetic separation technology.

关键词： Siderite High temperature reduction Carburization-Separation Iron carbide

Geometry-Aware ICP for Scene Reconstruction from RGB-D Camera

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Journal of Computer Science & Technology 2019年第3期34卷 581-593页

作者： Bo Ren Jia-Cheng Wu ya-Lei lv Ming-Ming Cheng Shao-Ping Lu College of Computer Science Nankai UniversityTianjin 300350China

The Iterative Closest Point (ICP) scheme has been widely used for the registration of surfaces and point ***, when working on depth image sequences where there are large geometric planes with small (or even without) details,existing ICP algorithms are prone to tangential drifting and erroneous rotational estimations due to input device *** this paper, we propose a novel ICP algorithm that aims to overcome such drawbacks, and provides significantly stabler registration estimation for simultaneous localization and mapping (SLAM) tasks on RGB-D camera inputs. In our approach,the tangential drifting and the rotational estimation error are reduced by: 1) updating the conventional Euclidean distance term with the local geometry information, and 2) introducing a new camera stabilization term that prevents improper camera movement in the calculation. Our approach is simple, fast, effective, and is readily integratable with previous ICP algorithms. We test our new method with the TUM RGB-D SLAM dataset on state-of-the-art real-time 3D dense reconstruction platforms, i.e., ElasticFusion and Kintinuous. Experiments show that our new strategy outperforms all previous ones on various RGB-D data sequences under different combinations of registration systems and solutions.

关键词： ICP(iterative closest point) RGB-D tangential drifting rotational estimation covariance matrix