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Science China Mathematics 2017年第12期60卷 2515-2530页

作者： ZHANG RongPei YU XiJun LI MingJun LI xianggui School of Mathematics and Systematic Sciences Shenyang Normal University Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics School of Mathematics and Computational Science Xiangtan University School of Applied Science Beijing Information Science and Technology University

In this study, we present a conservative local discontinuous Galerkin(LDG) method for numerically solving the two-dimensional nonlinear Schrdinger(NLS) equation. The NLS equation is rewritten as a firstorder system and then we construct the LDG formulation with appropriate numerical flux. The mass and energy conserving laws for the semi-discrete formulation can be proved based on different choices of numerical fluxes such as the central, alternative and upwind-based flux. We will propose two kinds of time discretization methods for the semi-discrete formulation. One is based on Crank-Nicolson method and can be proved to preserve the discrete mass and energy conservation. The other one is Krylov implicit integration factor(IIF) method which demands much less computational effort. Various numerical experiments are presented to demonstrate the conservation law of mass and energy, the optimal rates of convergence, and the blow-up phenomenon.

关键词： discontinuous Galerkin method nonlinear Schrdinger equation conservation Krylov implicit integration factor method

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“电工与电路基础”辅助教具的设计

电气电子教学学报 2024年第1期46卷 237-240页

作者：孟祥贵王伟邱晓天国防科技大学智能科学学院长沙

在“电工与电路基础”线上线下金课建设过程中,针对教学案例演示性不强的问题,将其中一部分案例制成了辅助教学用具。在理论教学过程中通过教具演示提出针对性问题,并通过理论学习来解析问题,拉近了理论和实践之间的距离。并在教具基础... 详细信息

在“电工与电路基础”线上线下金课建设过程中,针对教学案例演示性不强的问题,将其中一部分案例制成了辅助教学用具。在理论教学过程中通过教具演示提出针对性问题,并通过理论学习来解析问题,拉近了理论和实践之间的距离。并在教具基础上提出拓展应用,激发了学生的创新思维能力,同时对学生的工程思维训练起到引导性的作用。

关键词：电路电工教具工程思维教学改革

宫内高血糖对新生儿炎症因子水平及婴儿过敏性疾病发生的影响

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新医学 2024年第6期55卷 437-442页

作者：陈晓玲黄向贵周泳宜罗立荣黄为民南方医科大学第一临床医学院(南方医院)新生儿科广东广州510515 广州市红十字会医院儿科广东广州510220 广州市红十字会医院产科广东广州510220

目的探讨宫内高血糖暴露对新生儿脐带血炎症细胞因子水平及婴儿过敏性疾病发生的影响。方法选择112例产妇及其新生儿,根据孕期血糖情况分为宫内高血糖暴露组(55例)和无宫内高血糖暴露组(57例),比较2组新生儿出生时脐带血中的炎症细胞... 详细信息

目的探讨宫内高血糖暴露对新生儿脐带血炎症细胞因子水平及婴儿过敏性疾病发生的影响。方法选择112例产妇及其新生儿,根据孕期血糖情况分为宫内高血糖暴露组(55例)和无宫内高血糖暴露组(57例),比较2组新生儿出生时脐带血中的炎症细胞因子水平差异。随访1年,比较2组婴儿过敏性疾病如特应性皮炎、婴幼儿喘息等的发生率,分析宫内高血糖对新生儿免疫力及婴儿过敏性疾病的影响。结果 2组新生儿脐带血IL-1β、IL-2、IL-6、IL-8、IL-10、IL-12、TNF-α质量浓度比较差异均无统计学意义(P均> 0.05)。宫内高血糖暴露组新生儿脐带血IL-4质量浓度为(30.180±8.648)pg/mL,高于无宫内高血糖暴露组的(22.500±10.100)pg/mL(P 0.05)。结论宫内高血糖暴露对新生儿脐带血细胞因子IL-4质量浓度有一定影响,这或许能为今后过敏性疾病早期干预提供依据。

关键词：新生儿脐带血细胞因子宫内高血糖过敏

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Multiple Cavernous Hemangiomas of the Orbit

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Eye Science 2011年第1期26卷 48-51页

作者： xianggui Wang Jianhua Yan State Key Laboratory of Ophthalmology Zhongshan Ophthalmic Center Sun Yat-sen University Guangzhou510060 China

Purpose:Cavernous hemangioma of the orbit is often unilateral and *** cavernous hemangiomas of the orbit are extremely *** authors reported four patients who had more than two cavernous hemangiomas in one ***:Case *** clinical features,imaging findings,differential diagnosis and surgical management were ***:We found 4 cases of multiple cavernous hemangiomas of the orbit out of 214 records of all patients with orbital cavernous hemangiomas who were referred to us from Jan 1,1986 to Dec 31,*** patients were female and two were *** mean age was 46.5 years,ranging from 37.0 to 57.0 *** left orbits were affected in all patients,with two,three,eight and ten tumors,*** most common complaint was a painless,gradually progressive *** characteristic CT imaging features were multiple well circumscribed,round or ovoid masses that were sharply delineated from the surrounding tissue.B-scan ultrasonography showed round-shaped orbital masses with high internal *** therapeutic outcomes of lateral or anterior orbitotomy were ***:Although rare,cavernous hemangioma should be considered in the differential diagnosis of patients with multiple orbital mass lesions.

关键词：海绵状血管瘤圆形轨道多重病例报告鉴别诊断临床特点平均年龄 CT成像

Effect of protein molecules on the photoluminescence properties and stability of water-soluble CdSe/ZnS core-shell quantum dots

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Chinese Science Bulletin 2013年第21期58卷 2616-2621页

作者： ZHANG YouLin TU LangPing ZENG QingHui KONG xianggui State Key Laboratory of Luminescence and Applications Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences

The fact that the photoluminescence properties of quantum dots are always strongly influenced by the environment limits the scope of further progress in the field of QD' bio-applications. In this paper, the effects of immunoglobulin G (IgG) on the photo-luminescence properties and stability of water-soluble CdSe/ZnS core-shell quantum dots coated with amphiphilic poly (acrylic acid) (PAA) are studied. Photoluminescence (PL) spectra, UV-vis spectra and excited state lifetime measurements are used to characterize the influence of different protein molecules, such as IgG (goat anti-human IgG, rabbit anti-human IgG, human IgG, and goat anti-human IgG-human IgG conjugates), avidin and bovine serum albumin (BSA) on the PL properties of QDs. The PL intensity and stability of CdSe/ZnS are largely enhanced compared to that of pure CdSe/ZnS QDs when the IgG molecules are added into the QD solution. The PL intensity increases with increasing the IgG concentration, but there appears no influence on the PL peak and a full width at half maximum (FWHM). The PL evolution of QDs as a function of different protein molecules depends on the structure of protein molecules, which is used as a sensor to recognize human IgG. It is inferred that the interaction between PAA coating layer and IgG molecules results in the enhancement of PL intensity. The study of the effect of pH and ion strength on optical properties of QD-IgG mixed solution, compared with the pure QD solution, suggests that pH value and ion strength do not destroy the interaction between the PAA coating layer and IgG. Excited state lifetime analysis indicates that the PL enhancement comes from the passivation of surface of the QDs with the PAA coating layer. IgG molecules have no effects on the properties of the biological system but can increase the stability and PL intensity of CdSe/ZnS QDs, which will enlarge the application of QDs in biomedicine and other fields.

关键词：光致发光特性蛋白质分子 CdSe 量子点稳定性 ZnS 水溶性抗生物素蛋白

Cr^(3+)/Y^(3+)co-doped persistent luminescence nanoparticles with biological window activation for in vivo repeatable imaging

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Journal of Rare Earths 2022年第9期40卷 1389-1398,I0002页

作者： Huimin Jiang Lin Liu Kexin Yu xianggui Yin Shenghui Zheng Liang Song Junpeng Shi Yun Zhang College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021China Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

The near-infrared(NIR)persistent luminescence materials(PLMs)can remain long-lasting luminescence after removal of the excitation light,which permits bioimaging with high sensitivity owing to the absence of background fluorescence interference from in situ ***,the NIR PLMs have aroused intensive research interest in ***,the optimal excitation wavelength of current NIR PLMs is located in the ultraviolet region with shallow tissue penetration,making it difficult to activate effectively in vivo,and seriously hindering their further application in ***,we report a novel kind of Cr^(3+)ions and Y^(3+)ions co-doped NIR PLM,Zn_(1.3)Ga_(1.4)Sn_(0.3)O_(4):Cr^(3+),Y^(3+)(ZGSCY),which emits NIR persistent luminescence at 696 *** with Zn_(1.3)Ga_(1.4)Sn_(0.3)O_(4):Cr^(3+)(ZGSC)excited by the light with a wavelength in the biological window(>650 nm),after being co-doped with Y^(3+)ions,the NIR persistent luminescence performance of ZGSCY is significantly improved because of the increase of trap concentration in the *** addition,we synthesized ZGSCY nanoparticles(NPs)by the combustion method,which exhibit excellent optical properties after being excited by the light with a wavelength in the biological *** surface modification with PEG,the ZGSCY NPs present low ***,due to the co-doping of Y^(3+)ions,the signal-to-noise ratio(SNR)of ZGSCY NPs in vivo imaging is about 1.8 times higher than that of the ZGSC ***,the rechargeable in vivo imaging and passive tumor-targeted imaging are successfully achieved by activating with a lightemitting diode(LED,659 nm)after intravenous injection of ***,this kind of NIR PLM with high excitation efficiency performance in the biological window is expected to promote its biomedical application in deep tissues.

关键词： Near-infrared Persistent luminescence Co-doping Biological window In vivo imaging Rare earths

离子液体功能化磁性纳米颗粒的制备及其茶多酚吸附性能研究

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中国测试 2022年第9期48卷 71-77页

作者：罗琴贾广成杨金漆高海莹陈鹏飞陈祥贵何绍志西华大学食品与生物工程学院四川成都610039 新疆维吾尔自治区计量测试研究院新疆乌鲁木齐830011 四川省食品检验研究院四川成都611731

茶多酚是茶叶中最重要且含量最高的生物活性成分,探索新的茶多酚分离方法有利于提高其开发利用率,并推动产业技术革新。基于磁性固相萃取技术和离子液体在分离领域的诸多优势,该研究以咪唑类脯氨酸离子液体作为功能成分对磁性介孔二氧... 详细信息

茶多酚是茶叶中最重要且含量最高的生物活性成分,探索新的茶多酚分离方法有利于提高其开发利用率,并推动产业技术革新。基于磁性固相萃取技术和离子液体在分离领域的诸多优势,该研究以咪唑类脯氨酸离子液体作为功能成分对磁性介孔二氧化硅纳米颗粒进行表面修饰制备一种新型的磁性吸附剂,通过扫描电子显微镜,傅里叶变换红外光谱仪,X-射线衍射仪和振动样品磁强计对其结构进行表征。静态吸附实验结果表明该吸附剂对茶多酚的最大吸附量为213.99 mg/g;吸附动力学和热力学研究结果表明该吸附过程更符合准二级动力学方程和Freundlich吸附等温模型。研究结果可以为建立新型的茶多酚分离方法提供一定的参考。

关键词：茶多酚磁性固相萃取离子液体表面修饰

同方期刊数据库博看期刊评论

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牦牛酸奶加工工艺参数优化及其品质分析

中国测试 2023年第6期49卷 68-74页

作者：刘雪吴莉蔚杨勇陈鹏飞黄玉坤王力均杨潇陈祥贵西华大学食品与生物工程学院四川成都610039 红原牦牛乳业有限责任公司四川红原624400

为开发出一种品质优良、营养丰富、口感细腻的牦牛酸奶产品,该研究以牦牛奶粉为原料,通过响应面试验优化牦牛酸奶的最佳加工参数如下:牦牛奶粉复水比为1:8,蔗糖添加量为7%,杀菌条件为85℃/15min,发酵时间8 h。在此条件下获得的牦牛酸奶... 详细信息

为开发出一种品质优良、营养丰富、口感细腻的牦牛酸奶产品,该研究以牦牛奶粉为原料,通过响应面试验优化牦牛酸奶的最佳加工参数如下:牦牛奶粉复水比为1:8,蔗糖添加量为7%,杀菌条件为85℃/15min,发酵时间8 h。在此条件下获得的牦牛酸奶质地醇厚、口感细腻、酸甜适中,持水力57.53%、黏度9065 mPa·s、酸度95.41°T、硬度45.21 g、黏性26.16 mJ、内聚性0.51、弹性0.95 mm、乳酸菌活菌数2.74×106 CFU/mL。为明确牦牛酸奶风味成分特点,采用全二维气相色谱/质谱联用仪(comprehensive two-dimensional gas chromatograph/mass spectrometer,GC×GC-MS)对其进行测试分析,并与普通酸奶及3种市售酸奶进行对比。结果表明,牦牛酸奶中风味物质最多,有180种,包括烯烃类、烷烃类、醇类、醛类、酯类、酮类、醚类、酚类、胺类、酸类以及呋喃类物质,其中含有10种牦牛酸奶特有的风味物质。

关键词：牦牛酸奶响应面法全二维气相色谱/质谱联用仪

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高阻隔耐蒸煮复合包装用聚氨酯胶黏剂的制备与性能

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湖南工业大学学报 2024年第1期38卷 84-90页

作者：杨坚李孟琦邱洁陈润宇刘祥贵余嘉裕刘跃军湖南工业大学包装与材料工程学院湖南株洲412007 广东华通新材料科技有限公司广东东莞523591

以低聚物聚酯多元醇与异氰酸酯反应,合成了一种可被用于高阻隔复合包装膜、具有较强的黏结性能和耐蒸煮性能的聚氨酯胶黏剂。并探究了不同反应条件对聚氨酯胶黏剂及复合薄膜性能的影响。研究发现,主剂的初始黏度与反应温度呈正相关,异... 详细信息

以低聚物聚酯多元醇与异氰酸酯反应,合成了一种可被用于高阻隔复合包装膜、具有较强的黏结性能和耐蒸煮性能的聚氨酯胶黏剂。并探究了不同反应条件对聚氨酯胶黏剂及复合薄膜性能的影响。研究发现,主剂的初始黏度与反应温度呈正相关,异氰酸酯基与羟基的物质的量之比(简称R值)越大,则初始黏度和复合膜的平均剥离力越大;而R值过大或三醇占总醇的物质的量之比过大,则合成的聚氨酯胶黏剂越易出现凝胶。较优条件下制备的复合膜的透水率为1.05 g/(m^(2)·d),透氧率为0.62 cm3/(m^(2)·d),并具有良好的耐高温蒸煮性能。

关键词：聚氨酯胶黏剂复合包装高阻隔性能耐蒸煮

ICP-OES和ICP-MS方法分析郫县豆瓣中矿物质元素的分布

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中国测试 2019年第12期45卷 62-68页

作者：王冲陶璇冯云柯陈鹏飞杨潇陈祥贵车振明马力黄玉坤西华大学食品与生物工程学院四川成都610039 宜宾西华大学研究院食品非热加工重点实验室食品非热加工工程技术研究中心四川宜宾644004

通过优化微波消解郫县豆瓣样品预处理方法,建立电感耦合等离子体质谱法(ICP-MS)和电感耦合等离子体发射光谱法(ICP-OES)检测郫县豆瓣中14种矿物质元素(K、P、Al、Fe、Cu、Ca、Zn、Mn、Mg、Se、Pb、Cd、Cr、As)的定量分析方法,并对不同... 详细信息

通过优化微波消解郫县豆瓣样品预处理方法,建立电感耦合等离子体质谱法(ICP-MS)和电感耦合等离子体发射光谱法(ICP-OES)检测郫县豆瓣中14种矿物质元素(K、P、Al、Fe、Cu、Ca、Zn、Mn、Mg、Se、Pb、Cd、Cr、As)的定量分析方法,并对不同发酵时间的郫县豆瓣进行检测。得到Pb、Cd、Cr、As的检出限分别为:0.110μg/kg、0.014μg/kg、0.269μg/kg、0.132μg/kg,加标回收率介于91.1%~109.8%;K、P、Al、Fe、Cu、Ca、Zn、Mn、Mg、Se检出限介于0.0014~0.0328 mg/kg,加标回收率在91.9%~117.7%之间。对不同后发酵时长(1~11个月)郫县豆瓣中矿物质元素分布进行检测,结果显示在该时间范围内同一元素含量变化无显著性差异;Pb、Cd、Cr、As的残留量均远低于国标限量,显示郫县豆瓣在此方面的安全性。测试结果准确、高效,表明该方法具有良好的检测应用前景。

关键词：矿物质元素分布 ICP-MS ICP-OES 郫县豆瓣微波消解