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Fundamental and dressed annular solitons in saturable nonlinearity with parity–time symmetric Bessel potential

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Chinese Physics B 2018年第4期27卷 313-319页

作者： Hong-Cheng Wang ya-dong wei Xiao-Yuan Huang Gui-Hua Chen Hai Ye School of Electrical Engineering and Intelligentization Dongguan University of Technology Dongguan 523808 China

We theoretically study the existence and stability of optical solitons in saturable nonlinearity with a two-dimensional parity–time（PT） symmetric Bessel *** the fundamental solitons,a novel type of dressed soliton,whose intensity looks like a ring dressed on an intensity hump,are *** is found that both the fundamental solitons and dressed solitons can exist when the propagation constant is beyond a certain critical *** propagation stability is investigated with a linear stability analysis corroborated by a beam propagation *** the fundamental solitons are stable,while dressed solitons are unstable for low values of saturable *** the value of saturable parameter increases,the dressed solitons tend to be stable at high powers.

关键词： optical solitons parity-time symmetry optical lattice linear stability

Synthesis of a novel organic nonlinear optical chromophore and the Testing for μ_gβ Value

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Optoelectronics Letters 2007年第1期3卷 50-53页

作者： HAN Li-kun JIANG ya-dong LI wei CAI Yuan State Key Laboratory of Electronic Thin Film and Integrated Devices School of Opto-Electronic Information University of Electronic Science and Technology of China Chengdu 610054 China

A novel second-order nonlinear optical chromophore （DCDHF-2-V） was synthesized from 3-Hydroxy-3-methyl-2-butanae, propanedinitrile and 4-diethylaminobenzaldehyde by aldol condensation reaction. Molecular structural characterization was investigated by elemental analysis, FTIR, and 1H-NMR spectra. The melting point obtained from DSC thermogram was almost 251 ℃, and the compound shows a thermal stability up to 270 ℃. Second-order NLO properties of the chromophore were measured by solvatochromic method. From the quantum-mechanical two-level model, it can be obtained that the μgβ value of DCDHF-2-V is 6520×10^-48esu atthe wavelength of 1064 nm.

关键词：有机非线性光学发色团合成 μgβ值测试热稳定性

Prevalence,Characteristics and Treatment of Knee Osteoarthritis in Urban Residents of Beijing,China:A Community-Based Cross-Sectional Study

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Biomedical and Environmental Sciences 2024年第4期37卷 418-422页

作者： ZHOU Jun yaN yan dong ya wei LIU Xiao Yu WANG Ping LIN Jia Ming dong Peng Xuan QUAN Rui WANG Rong Tian MI Bao Hong CHEN wei Heng Beijing University of Chinese Medicine Third Affiliated Hospital Beijing 100029China Engineering Research Center of Chinese Orthopaedics and Sports Rehabilitation Artificial Intelligent Ministry of EducationBeijing 100029China Beijing Hepingli Community Health Service Center Beijing 100013China Minimally Invasive Joint Surgery Beijing University of Chinese Medicine Third Affiliated HospitalBeijing 100029China

Knee osteoarthritis(KOA)is a common progressive joint disease with chronic pain and movement disorders as the main clinical *** is a major public health problem worldwide and it imposes serious medical and economic *** accounts for nearly four-fifths of the global Osteoarthritis burden and increases with rising obesity and age[1].There are many reasons for the change in disease prevalence and risk factors,such as urbanization,lifestyle changes,population aging,and sex imbalances.

关键词： Osteoarthritis clinical obesity

机械振动对改性煤沥青制备针状焦结构影响的研究

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新型炭材料 2017年第5期32卷 467-473页

作者：王颖董亚威钟存贵曹青太原理工大学化学化工学院山西太原030024

以三乙酸甘油酯为改性剂改性的中温煤沥青在炭化过程中引入机械振动作用。通过热重分析仪、傅立叶红外光谱仪和核磁共振仪对改性煤沥青化学结构和热行为进行了分析。采用偏光显微分析仪、XRD和SEM比较了机械振动作用对改性煤沥青成焦结... 详细信息

以三乙酸甘油酯为改性剂改性的中温煤沥青在炭化过程中引入机械振动作用。通过热重分析仪、傅立叶红外光谱仪和核磁共振仪对改性煤沥青化学结构和热行为进行了分析。采用偏光显微分析仪、XRD和SEM比较了机械振动作用对改性煤沥青成焦结构的影响。改性后热稳定性增加、残炭率增高,芳香氢比例减少、聚合度增大。改性再加机械振动作用后的煤沥青在炭化过程中,针状结构有序性提高,晶面间距(d_(002))变小,芳环晶间有序度(Lc)增大,石墨化度增加。机械振动能够促进中间相微球的融并产生纤维线性结构。进一步煅烧后其针状结构非常清晰、有序。煤沥青改性和机械振动的综合作用可以制备更高性能的针状焦。

关键词：煤沥青改性机械振动中间相半焦针状焦

改性石油沥青和煤沥青共炭化对焦形成的影响（英文）

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新型炭材料 2019年第3期34卷 258-266页

作者：董亚威邢国政靳利娥李平曹青太原理工大学化学化工学院

研究了不同比例溴化石油沥青(Brominated petroleum pitch,BPP)和精制煤沥青(Refined coal tar pitch,RCTP)在苯甲酰氯存在下得到的沥青(Synthetic pitch,SP)性质以及共炭化对焦结构有序性产生的影响。利用红外光谱仪、氢核磁共振仪、... 详细信息

研究了不同比例溴化石油沥青(Brominated petroleum pitch,BPP)和精制煤沥青(Refined coal tar pitch,RCTP)在苯甲酰氯存在下得到的沥青(Synthetic pitch,SP)性质以及共炭化对焦结构有序性产生的影响。利用红外光谱仪、氢核磁共振仪、热重仪和黏度仪对SP性质和炭化行为进行分析表征。所得半焦和焦的光学组织分别通过偏光显微镜、X射线衍射仪和扫描电子显微镜进行了观察。结果表明,由10wt%溴化BPP(6 h)得到的沥青(Typical synthesized pitch,TP)炭化产率可达50.1wt%;与未溴化石油沥青相比,BPP与RCTP共炭化产生的半焦,其有序性得到了提高,晶格参数d002和Lc得到改善。说明石油沥青中溴的引入增加了同RCTP的反应活性,有利于改善焦的结构。

关键词：煤沥青石油沥青溴化共炭化焦

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

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Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun Ma Taiwei dong Fei Luan Juanjuan yang Feng Miao Peifeng wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis

对3-CNB改性煤沥青制备半焦和针状焦性质研究

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高校化学工程学报 2015年第6期29卷 1445-1450页

作者：柴韵杰苏蕾曹青董亚威靳利娥太原理工大学化学化工学院山西太原030024

为提升煤沥青(coal tar pitch-CTP)的潜在价值,以3-氯硝基苯(3-chloronitrobenzene,3-CNB)为改性剂,对甲基苯磺酸为催化剂,对其进行了成功改性。利用偏光显微镜、TG、FT-IR、1H-NMR和XRD对中间产物半焦和针状焦性质进行了分析。偏光显... 详细信息

为提升煤沥青(coal tar pitch-CTP)的潜在价值,以3-氯硝基苯(3-chloronitrobenzene,3-CNB)为改性剂,对甲基苯磺酸为催化剂,对其进行了成功改性。利用偏光显微镜、TG、FT-IR、1H-NMR和XRD对中间产物半焦和针状焦性质进行了分析。偏光显微组织分析表明,改性后煤沥青(modified CTP,MCTP)的碳化产率增加,中间相光学组织呈典型的长程纤维结构;其黏度、β树脂含量、TI和QIs均随3-CNB量的增加而增加;由红外吸收光谱表明,Iar和A880/A1600增加,说明芳香度和聚合度均增加;1H-NMR分析表明,经3-CNB改性的MCTP的Hβ和Hγ数量减少,而Har和Hα数量增加,其芳烃缩合度得到进一步增加;XRD分析表明,由MCTP制得的针状焦d002晶面距变小,晶粒堆积高度增加,其有序性显著增加。在此基础上,分析了3-CNB成功改性CTP的原因。

关键词：光谱法煤沥青改性中间相针状焦

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试论《郑氏规范》中的女教思想

湖州师范学院学报 2015年第7期37卷 67-72页

作者：董亚薇青岛大学师范学院山东青岛266071

浙江浦江郑氏家族因其孝义家风和治家法规《郑氏规范》而被世人所熟知,受到历代统治者的推崇和赞许。《郑氏规范》中的女教思想探讨了为人女、为人妻、为人母三个不同的年龄阶段女子教育的具体内容,包括温婉柔顺的德行教育、勤事生产的... 详细信息

浙江浦江郑氏家族因其孝义家风和治家法规《郑氏规范》而被世人所熟知,受到历代统治者的推崇和赞许。《郑氏规范》中的女教思想探讨了为人女、为人妻、为人母三个不同的年龄阶段女子教育的具体内容,包括温婉柔顺的德行教育、勤事生产的家庭劳作教育、择配良婿的婚嫁观念、以身作则的教子措施等,对古代宋明理学影响下女教思想的研究,乃至今天的婚嫁育子、子女教育以及家庭关系的处理等,及扩展至和谐社会的构建等方面都具有深远的意义。

关键词：《郑氏规范》郑氏家族女教思想

从“天人合一”到“中和之‘善’”——探求“和谐”的内涵及其衍变的历史

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西安航空技术高等专科学校学报 2009年第6期27卷 9-12页

作者：董亚伟陕西师范大学历史文化学院陕西西安710062

从词源学的角度看,"和谐"最初指原始先民在篱笆墙内安居足食、内心和谐的一种生活状态。随着社会的发展,"和谐"的内涵也发生了改变,开始由精神上、审美上的音乐之"和"衍变出社会哲学意义上的"和同之辨"。春秋末期,孔子以其使命意识和理... 详细信息

从词源学的角度看,"和谐"最初指原始先民在篱笆墙内安居足食、内心和谐的一种生活状态。随着社会的发展,"和谐"的内涵也发生了改变,开始由精神上、审美上的音乐之"和"衍变出社会哲学意义上的"和同之辨"。春秋末期,孔子以其使命意识和理性精神,启动了"和同之辩"向"中和之辩"的转机,从而使"和谐"具有了"善"的道德价值取向。

关键词：词源学和谐和同中和