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一种改进的无线传感器网络定向扩散协议

合肥工业大学学报（自然科学版） 2010年第6期33卷 851-854页

作者：骆海艳郑淑丽李少林合肥工业大学计算机与信息学院安徽合肥230009

文章针对定向扩散(DD)路由协议在能效方面的不足,提出了一种改进方案(AIDD)。该方案通过预测跳数控制数据的传输距离,同时考虑节点的剩余能量和传输能耗因素,通过决策函数选择转发节点。仿真结果表明,改进方案实现了网络的全局能量平衡... 详细信息

文章针对定向扩散(DD)路由协议在能效方面的不足,提出了一种改进方案(AIDD)。该方案通过预测跳数控制数据的传输距离,同时考虑节点的剩余能量和传输能耗因素,通过决策函数选择转发节点。仿真结果表明,改进方案实现了网络的全局能量平衡,避免了因丢包而重传引起的能量消耗,提高了转发率,从而延长了网络的生命周期。

关键词：无线传感器网络定向扩散能量平衡

Double [5]carbohelicene: facile synthesis, chiroptical properties,isomerization study, and lasing application

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Science China Chemistry 2025年第1期68卷 233-240页

作者： Peipei liu Yantong li Meng-Xiang Wu Hao Kang Xiao-li Zhao lin Xu linlin liu Xiaodong li Junfeng Fang Zhiwei Fang Ya Cheng Hai-Bo Yang Huakang Yu Xueliang Shi State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular Engineering East China Normal University School of Physics and Optoelectronics South China University of Technology Institute of Polymer Optoelectronic Materials & Devices State Key Laboratory of Luminescent Materials & Devices South China University of Technology School of Physics and Electronic Science Engineering Research Center of Nanophotonics & Advanced Instrument Ministry of EducationEast China Normal University State Key Laboratory of Precision Spectroscopy School of Physics and Electronic Science East China Normal University

Double carbohelicenes have attracted considerable attention due to their aesthetic structures, distinct π-conjugation extension, inherent chirality, and intriguing optical and electronic properties. Herein, the concise de novo synthesis of a new double[5]carbohelicene 1 together with its chiroptical properties, isomerization process and lasing application is presented. 1 was synthesized by a simple protocol involving the formation of a 6,6′-bipentacene as the key intermediate. It is worth noting that1 existed as two diastereomers 1-PP/MM and 1-PM, which were successfully isolated and unambiguously confirmed by Xray crystallography. The optical resolution of the racemic 1-PP/MM was successfully achieved by chiral-phase highperformance liquid chromatography（HPLC）, and 1-PP and 1-MM were characterized by circular dichroism. Interestingly, it was found that 1-PP/MM could be completely isomerized to 1-PM upon heating, and the detailed thermodynamics and kinetics of the isomerization process were systematically investigated. 1-PM exhibited deep-red luminescence with emission maximum at 723 nm and fluorescence quantum yield as high as 32.95%. Consequently, we can showcase the lasing application of 1-PM by doping with epoxy resin to assemble a bottle microlaser spontaneously, which the lasing wavelength is 796.6 nm at a threshold of 0.8 m J cm-2. We believe that our studies, including the facile synthesis methodology, detailed isomerization studies, and lasing application, will shed some light on the design and synthesis of novel carbohelical systems with more functions.

关键词： double carbohelicene optical resolution organic laser isomerization X-ray diffraction

核磁共振动态增强成像评价肝纤维化的临床应用

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南方医科大学学报 2011年第7期31卷 1259-1263页

作者：李新瑜熊伟韩路军张雪林邱士军李绍林河南科技大学第一附属医院磁共振室河南洛阳471003 南方医科大学南方医院影像中心广东广州510515 南方医科大学华瑞医院影像科广东广州510360

目的探讨核磁共振(MR)动态增强时间信号曲线(TIC)定量参数评价肝纤维化程度的价值。方法患者及健康志愿者共36人行肝脏MR常规及动态增强扫描,依据肝纤维化程度分为正常组(n=9)、轻度纤维化(n=5)、中重度纤维化(n=7)及肝硬化(n=15)共4组... 详细信息

目的探讨核磁共振(MR)动态增强时间信号曲线(TIC)定量参数评价肝纤维化程度的价值。方法患者及健康志愿者共36人行肝脏MR常规及动态增强扫描,依据肝纤维化程度分为正常组(n=9)、轻度纤维化(n=5)、中重度纤维化(n=7)及肝硬化(n=15)共4组。获取门静脉、肝、脾的TIC,评价峰高、TTP、信号上升最大斜率(MSI)和信号下降最大斜率(MSD)等TIC量化参数与肝纤维化程度的相关性,运用ROC曲线评价TIC斜率指标诊断肝纤维化程度的效力。结果各ROI的TIC曲线的峰高、MSI、肝脾的MSD均与纤维化程度呈负相关关系(P0.5)。ROC曲线分析显示:诊断轻度肝纤维时,各斜率指标曲线下面积(AUC)依次为0.747～0.783,其中脾MSD曲线下面积最大;诊断中度以上纤维化(S≥3)时,AUC为0.728～0.877,由小到大对应的指标依次为动脉期肝MSI、门静脉MSI、门静脉期肝MSI、肝MSD、动脉期脾MSI、脾MSD;诊断肝硬化时,AUC为0.742～0.821,由小到大对应的指标依次为门静脉期肝MSI、肝MSD、动脉期肝MSI、门静脉MSI、动脉期脾MSI、脾MSD。结论 MR动态增强TIC能反映肝纤维化进程的血流动力学变化,是一种无创评价肝纤维化程度的功能影像学方法。

关键词：肝纤维化肝硬化磁共振动态增强成像时间信号强度曲线

磁共振弥散加权成像ADC值诊断兔肝脏纤维化模型病理变化

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南方医科大学学报 2009年第4期29卷 772-775,777页

作者：李绍林张雪林朱幼芙陈平雁陈斌曲华丽南方医科大学南方医院影像科南方医科大学南方医院肝脏病中心南方医科大学公共卫生与热带医学院生物统计系广东广州510515

目的研究磁共振弥散加权成像(MR-DWI)ADC值在诊断肝脏纤维化模型(liver fibrosis model,LFM)病理变化中的价值和意义。方法对4只正常和13只LFM兔进行MR-DWI检查,选择b值为200s·mm-2、500s·mm-2、300s·mm-2、600s·mm-2,分别在肝脏左... 详细信息

目的研究磁共振弥散加权成像(MR-DWI)ADC值在诊断肝脏纤维化模型(liver fibrosis model,LFM)病理变化中的价值和意义。方法对4只正常和13只LFM兔进行MR-DWI检查,选择b值为200s·mm-2、500s·mm-2、300s·mm-2、600s·mm-2,分别在肝脏左右侧获得4个ADC值。按照ISHAK肝脏病理组织学评分和纤维化分期标准,对全部兔肝脏标本进行组织病理学评分分级(1～6分为一级、7～12分为二级、13～18分为三级)和纤维化分期(Ⅰ期～Ⅵ期),以此为标准统计分析ADC值的变化情况。统计学分析应用SPSS13.0统计软件包,采用单向方差分析方法(Analysis of variance,ANOVA)。P<0.05为差异有统计学意义。结果兔LFM组中4个ADC值均明显低于正常对照组,统计分析表明正常对照组与模型组、不同病理评分分级和纤维化分期间ADC值差异性均有统计学意义,P=0.000。结论肝脏发生纤维化时,肝组织的ADC值明显降低,随着病理评分分级和纤维化分期的增加,ADC值降低越加显著。肝细胞变性、肿胀和炎细胞浸润,以及间质内胶原纤维沉积,使水份含量减少,水的自由运动受到限制,是导致ADC值降低的主要病理学基础。

关键词：磁共振弥散加权成像肝脏纤维化模型

低强度聚焦超声触发PLGA阿霉素在细胞内空化增加乳腺癌细胞死亡

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中山大学学报（医学科学版） 2021年第2期42卷 209-217页

作者：黄盘辉罗琼严飞李绍林中山大学附属第五医院放射科广东珠海519000 华南理工大学医学院附属广州市第一人民医院超声科广东广州510180 中国科学院深圳先进技术研究所劳特伯生物医学成像研究中心广东深圳518055

【目的】探讨低强度聚焦超声能否触发聚乳酸-羟基乙酸共聚物(PLGA)包裹阿霉素在细胞内的空化作用以增加4T1肿瘤细胞的死亡。【方法】采用双乳化溶剂蒸发法制备了负载阿霉素的聚乳酸-羟基乙酸共聚物(PLGA)纳米气泡。设立细胞内释药组,细... 详细信息

【目的】探讨低强度聚焦超声能否触发聚乳酸-羟基乙酸共聚物(PLGA)包裹阿霉素在细胞内的空化作用以增加4T1肿瘤细胞的死亡。【方法】采用双乳化溶剂蒸发法制备了负载阿霉素的聚乳酸-羟基乙酸共聚物(PLGA)纳米气泡。设立细胞内释药组,细胞外释药组,传统给药组,单独超声组和对照组。用流式细胞仪检测各组细胞的死亡情况,用细胞活力检测试剂盒(CCK8)检测各组的细胞增殖,细胞划痕检测各组的侵袭情况。【结果】超声组细胞核的红色荧光平均强度高于对照组,差异具有统计学意义(t=16.627,P<0.001);聚乳酸-羟基乙酸共聚物(PLGA)包裹阿霉素在3、5、7、24和48 h的累计释药量超声组均高于对照组,差异都具有统计学意义(P<0.001);细胞内释药组,细胞外释药组及传统给药组的细胞存活率,细胞增值率及划痕像素面积均低于对照组,且细胞内释药组显著低于其他组,差异具有统计学有意义(P<0.001)。【结论】低强度聚焦超声通过细胞内空化触发的细胞内药物释放比低强度聚焦超声触发的细胞外药物释放及传统的给药方式更有效地增加4T1肿瘤细胞的死亡。

关键词：低强度聚焦超声细胞内空化乳腺肿瘤细胞死亡

Cholesterol metabolism: physiological versus pathological aspects in intracerebral hemorrhage

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Neural Regeneration Research 2025年第4期20卷 1015-1030页

作者： Ruoyu Huang Qiuyu Pang Lexin Zheng Jiaxi lin Hanxi li lingbo Wan Tao Wang Department of Forensic Science School of Basic Medicine and Biological SciencesSuzhou Medicine College of Soochow UniversitySuzhouJiangsu ProvinceChina

Cholesterol is an important component of plasma membranes and participates in many basic life functions,such as the maintenance of cell membrane stability,the synthesis of steroid hormones,and *** plays a key role in the establishment and maintenance of the central nervous *** brain contains 20%of the whole body’s cholesterol,80%of which is located within myelin.A huge number of processes(e.g.,the sterol regulatory element-binding protein pathway and liver X receptor pathway)participate in the regulation of cholesterol metabolism in the brain via mechanisms that include cholesterol biosynthesis,intracellular transport,and *** brain injuries or diseases involving crosstalk among the processes above can affect normal cholesterol metabolism to induce detrimental ***,we hypothesized that cholesterol-related molecules and pathways can serve as therapeutic targets for central nervous system *** hemorrhage is the most severe hemorrhagic stroke subtype,with high mortality and *** cholesterol levels are associated with the risk of intracerebral ***,secondary pathological changes after intracerebral hemorrhage are associated with cholesterol metabolism dysregulation,such as neuroinflammation,demyelination,and multiple types of programmed cell *** cholesterol accumulation in the brain has been found after intracerebral *** this paper,we review normal cholesterol metabolism in the central nervous system,the mechanisms known to participate in the disturbance of cholesterol metabolism after intracerebral hemorrhage,and the links between cholesterol metabolism and cell *** also review several possible and constructive therapeutic targets identified based on cholesterol metabolism to provide cholesterol-based perspectives and a reference for those interested in the treatment of intracerebral hemorrhage.

关键词： cell death cholesterol metabolism intracerebral hemorrhage myelination therapeutic target

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卵巢癌特异性MR分子探针的制备

基础医学与临床 2014年第11期34卷 1463-1467页

作者：文曦琳李易葛晓东李妹玲文明李少林重庆医科大学附属第一医院放射科重庆400016

目的制备针对卵巢癌的特异性磁共振(magnetic resonance,MR)分子探针,并评价其体外转染SKOV3细胞的可行性。方法琼脂糖凝胶阻滞实验确定探针中的多聚赖氨酸修饰的超顺磁性氧化铁(SPIO-PLL)及质粒p Genesil1-shRNA的最佳质量比,荧光显微... 详细信息

目的制备针对卵巢癌的特异性磁共振(magnetic resonance,MR)分子探针,并评价其体外转染SKOV3细胞的可行性。方法琼脂糖凝胶阻滞实验确定探针中的多聚赖氨酸修饰的超顺磁性氧化铁(SPIO-PLL)及质粒p Genesil1-shRNA的最佳质量比,荧光显微镜观察绿色荧光蛋白在细胞中的表达以检测探针是否进入细胞;透射电子显微镜观察探针中铁在细胞中的部位;CCK-8法检测探针的细胞毒性;MR扫描检测探针转染后细胞的T2*信号强度改变。结果当SPIO-PLL和质粒的质量比达6∶1时,二者有效结合;探针体外转染细胞后,可观察到绿色荧光蛋白表达,检测到铁颗粒存在于胞质内;在探针浓度低于50 mg/L的范围内,细胞存活率高于80%;探针转染后细胞的T2*信号强度明显降低(P<0.01)。结论成功制备卵巢癌特异分子探针,在体外成功转染卵巢癌SKOV3细胞,对细胞毒性小,可被MR扫描敏感检测。

关键词：卵巢癌超顺磁性氧化铁分子探针

CNKSR2 interactome analysis indicates its association with the centrosome/microtubule system

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Neural Regeneration Research 2025年第8期20卷 2420-2432页

作者： lin Yin Yalan Xu Jie Mu Yu Leng Lei Ma Yu Zheng Ruizhi li Yin Wang Peifeng li Hai Zhu Dong Wang Jing li Institute for Translational Medicine The Affiliated Hospital of Qingdao UniversityMedical CollegeQingdao UniversityQingdaoShandong ProvinceChina School of Basic Medicine Qingdao UniversityQingdaoShandong ProvinceChina College of life Sciences and School of PharmacyMedical CollegeQingdao UniversityQingdaoShandong ProvinceChina Department of Urology Qingdao Municipal Hospital Affiliated to Qingdao UniversityQingdaoShandong ProvinceChina

The protein connector enhancer of kinase suppressor of Ras 2(CNKSR2),present in both the postsynaptic density and cytoplasm of neurons,is a scaffolding protein with several protein-binding *** of the CNKSR2 gene have been implicated in neurodevelopmental disorders,particularly intellectual disability,although the precise mechanism involved has not yet been fully *** has demonstrated that CNKSR2 plays a role in facilitating the localization of postsynaptic density protein complexes to the membrane,thereby influencing synaptic signaling and the morphogenesis of dendritic ***,the function of CNKSR2 in the cytoplasm remains to be *** this study,we used immunoprecipitation and high-resolution liquid chromatography-mass spectrometry to identify the interactors of *** a combination of bioinformatic analysis and cytological experiments,we found that the CNKSR2 interactors were significantly enriched in the proteome of the *** also showed that CNKSR2 interacted with the microtubule protein DYNC1H1 and with the centrosome marker *** colocalization analysis confirmed the centrosomal localization of *** we downregulated CNKSR2 expression in mouse neuroblastoma cells(Neuro 2A),we observed significant changes in the expression of numerous centrosomal *** manipulation also affected centrosome-related functions,including cell size and shape,cell proliferation,and ***,we found that CNKSR2 interactors were highly enriched in de novo variants associated with intellectual disability and autism spectrum *** findings establish a connection between CNKSR2 and the centrosome,and offer new insights into the underlying mechanisms of neurodevelopmental disorders.

关键词： autism spectrum disorder centrosome CNKSR2 intellectual disability interactome mass spectrometry microtubule neurodevelopmental disease protein complexes protein-protein interactions

β-细辛醚脂质立方液晶纳米粒的Bottom-up法制备工艺优化及处方筛选

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中草药 2021年第24期52卷 7464-7472页

作者：李绍林段启赵珍东沈小钟夏黎潘颖珊广东食品药品职业学院广东广州510520

目的以β-细辛醚为模型药物,制备β-细辛醚脂质立方液晶纳米粒(β-asarone lipid cubic liquid crystal nanoparticles,β-A@LCNPs)载药系统。方法采用Bottom-up法,以β-A@LCNPs的包封率、载药量、稳定性常数的归一化综合评分为质量考... 详细信息

目的以β-细辛醚为模型药物,制备β-细辛醚脂质立方液晶纳米粒(β-asarone lipid cubic liquid crystal nanoparticles,β-A@LCNPs)载药系统。方法采用Bottom-up法,以β-A@LCNPs的包封率、载药量、稳定性常数的归一化综合评分为质量考察指标,分别通过单因素考察立方液晶制备工艺,优化工艺参数,并通过星点设计响应面法,优选β-A@LCNPs最佳处方。结果优选的β-A@LCNPs制备工艺参数为60℃条件下,配置β-A@LCNPs悬浊液,而后1000 r/min匀速搅拌1.5 h,最后置于细胞超声仪,200 W超声15次,每次5 s,间隔10 s;优选的β-A@LCNPs处方为单油酸甘油酯300 mg、β-细辛醚20 mg、聚乙烯醇27000 25 mg、水40 mL。结论β-A@LCNPs制备工艺简单易行,重复性好;所得β-A@LCNPs立方结构形态完整,均一稳定。

关键词： β-细辛醚脂质立方液晶响应面法纳米粒 Bottom-up法包封率载药量稳定性常数

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