检索结果-南通市图书馆

Chinese Optics Letters 2024年第7期22卷 86-92页

作者： Yefeng Liu Huiqing Li Rijian Chen Changjiang Fan Yile Shi zhijun ren Key Laboratory of Optical Information Detecting and Display Technology Zhejiang Normal UniversityJinhua 321004China

In this work,we introduce a kind of new structured radial grating,which is named the even-type sinusoidal amplitude radial(ETASR)*** on diffraction theory and the principle of stationary phase,a comprehensive theoretical investigation on the diffraction patterns of ETASR gratings is *** results show that novel carpet beams with beautiful optical structures and distinctive characteristics have been constructed on the basics of the ETASR *** diffraction patterns are independent of propagation distance,that is,the new carpet beams have diffraction-free propagating *** non-diffracting carpet beams are divided into two types by beam characteristics:non-diffracting integer-order and half-integer-order carpet ***,we experimentally generate these carpet beams using the ETASR ***,their particularly interesting optical morphology and features are explored through numerical simulations and experiments.

关键词： even-type sinusoidal amplitude radial gratings principle of stationary phase non-diffracting integer-order carpet beams non-diffracting half-integer-order carpet beams.

Efficient and stable organic solar cells enabled by a poly(carbazole phosphonic acid)hole transporter

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第6期67卷 1941-1945页

作者： zhijun ren Siwei Luo Xiaoyu Shi Yunjie Dou Tianxiao Liu Lingyuan Wang Kwok Kiu Tsang Feifei Wang Yu Zhao Yangyang Liu Xiaodong Hu Xiaoxiao Peng Wei Liu He Yan Shangshang Chen State Key Laboratory of Coordination Chemistry MOE Key Laboratory of High Performance Polymer Materials&TechnologySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsEnergy Institute and Hong Kong Branch of Chinese NationalEngineering Research Center for Tissue Restoration and ReconstructionHong Kong University of Science and TechnologyHong Kong999077China

Conventional self-assembled monolayer(SAM)hole transporters in organic solar cells(OSCs)generally suffer from poor uniformity and limited thickness tolerance,hindering their large-scale *** overcome these limitations,we introduce a novel polymeric hole transporter synthesized by polymerizing carbazole phosphonic acid(PACz).The resultant Poly-2PACz material exhibits exceptional conductivity,high tolerance for variations in layer thickness,and improved film uniformity compared with conventional ***,the OSCs utilizing Poly-2PACz achieve a remarkable power conversion efficiency of 19.1%and a high fill factor of 81.2%,surpassing the devices based on ***,Poly-2PACz-based OSCs demonstrate excellent operational stability,retaining over 80%of their initial efficiency after 1,400 h of continuous light exposure in ambient *** work presents a novel strategy for designing hole transporters,paving the way for more efficient and stable OSCs.

关键词： organic solar cells hole transporters poly(carbazole phosphonic acid) stability

芎归汤通过抑制氧化应激诱导的心肌凋亡减轻小鼠心梗后心衰引起的心肌损伤

在线全文

学校读者我要写书评

暂无评论

南方医科大学学报 2024年第7期44卷 1416-1424页

作者：任志军刁建新王奕婷东莞康华医院老年医学科广东东莞523080 南方医科大学中医药学院广东广州510515

目的基于网络药理学结合实验验证探索芎归汤对心梗后心衰小鼠心脏功能、心脏病理的改善及作用机制。方法通过TCMSP、GeneCards、CTD等数据库搜索药物活性成分作用靶点与疾病相关靶点,并将二者取交集。采用DAVID数据库对交集靶点进行GO、... 详细信息

目的基于网络药理学结合实验验证探索芎归汤对心梗后心衰小鼠心脏功能、心脏病理的改善及作用机制。方法通过TCMSP、GeneCards、CTD等数据库搜索药物活性成分作用靶点与疾病相关靶点,并将二者取交集。采用DAVID数据库对交集靶点进行GO、KEGG通路富集分析。体内实验采用冠脉结扎构建心梗后心衰小鼠模型,分为假手术组(Sham,n=8)、模型组(Model,n=8)和芎归汤治疗组(XGT,3 g/kg,n=8)。体外实验采用叔丁基过氧化氢诱导H9C2细胞凋亡,分为常规培养的对照组(Control)、叔丁基过氧化氢组(TBHP)、芎归汤低剂量组(XGT,50μg/mL)和芎归汤高剂量组(XGT,100μg/mL)。通过HE、Masson、qPCR、免疫组化、CCK8、ROS、MDA、SOD、Hoechst 33342/PI和JC-1检测,探索芎归汤抗心衰的作用机制。结果网络药理学分析结果显示,芎归汤治疗心衰的潜在作用靶点共62个,其核心靶点包括PTGS2、ESR1、Caspase3、PPARG、HSP90AA1、BCL2、JUN、GSK3B等,富集分析显示这些靶点可能涉及细胞凋亡、AGE-RAGE信号通路、P53信号通路、PI3KAkt信号通路、VEGF信号通路等。体内结果显示,芎归汤能够减少心衰小鼠心肌细胞损伤、减轻心室重构,从而改善心衰小鼠心功能(P<0.05)。芎归汤能够抑制心肌凋亡相关蛋白Caspase3和BAX的表达,促进BCL2的表达(P<0.05)。体外实验表明,芎归汤通过抑制氧化应激,从而减轻叔丁基过氧化氢诱导的心肌细胞凋亡(P<0.05)。结论芎归汤能减轻心梗后心衰引起的心肌损伤,改善心衰小鼠心功能,芎归汤可能通过抑制氧化应激诱导的心肌凋亡发挥抗心衰的作用。

关键词：芎归汤心力衰竭网络药理学细胞凋亡氧化应激

UV disinfection of Staphylococcus aureus in ballast water: Effect of growth phase on the disinfection kinetics and the mechanization at molecular level

同方期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2016年第2期59卷 330-336页

作者： ren zhijun ZHANG Lin SHI Yue College of Aerospace and Civil Engineering Harbin Engineering University College of Power and Energy Engineering Harbin Engineering University

This work aimed to study the inactivate kinetics of Staphylococcus aureus （S. aureus） in artificial seawater by ultraviolet radi- ation, establish relationships between model parameters and growth phases, and explain the mechanization of UV disinfection by molecular biological detection. Investigations were carried out for the validation of Chick-Watson, Collins-Selleck, Horn and Biphasic models when S. aureus was in stationary phase （t=14 h）. The results showed that the Biphasic kinetic model＇s R2 turned out to be the highest one （R2=0.9892） and RMSE was less than 0.5 （RMSE =0.2699）. The Biphasic kinetic model was better fit for ultraviolet disinfection than the other three models under the circumstance of this experiment and chosen to fit the ultraviolet disinfection curves for microorganisms at three growth phases. The sensitivity of microorganisms under ultraviolet radiation was in the following order： in exponential phase 〉 in stationary phase 〉 in lag phase by comparing the indexes of the Biphasic model （kl and x）. Besides, agarose gel electrophoresis was used in order to directly assess the damage to DNA of mi- croorganisms that were exposed to the different dose of UV irradiation. The results revealed that DNA damage caused by UV radiation was an important reason for the microorganism inactivation and as the UV dose increased, there was greater damage caused in DNA.

关键词： UV disinfection kinetics growth phases Biphasic models DNA damage

Effect and mechanism of manganate preoxidation for organics removal

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2014年第6期57卷 1160-1164页

作者： ren zhijun NIGEL Graham College of Aerospace and Civil Engineering Harbin Engineering University Department of Civil and Environmental Engineering Imperial College LondonSouth Kensington Campus

The performance and mechanism of manganate preoxidation process for organics removal were investigated in the present *** results showed that manganate was a potentially powerful oxidizing agent and could make the natural organic matter(NOM)concentration of sample solution *** process of manganate in combination with ferrous sulphate(FeMnO)was effective for organics removal and with the highest removal rate of 89%when the FeMnO dose was 0.18 mmol/*** fluorescence analysis showed that the fluorescence intensity values related to hydrophobic acids and model humic acid polymers were the highest and the relative position of the main peak fluorescence intensity was shifted towards lower emission wavelengths,which indicated the reduction in the degree of aromaticity of residual organic matter fraction.

关键词： potassium manganate femno process oxidation organic matters

在线全文

学校读者我要写书评

暂无评论

膜污染的光学监测技术研究进展

工业水处理 2024年第4期44卷 10-18,169页

作者：任芝军白莹王秋稳韩金龙刘晓阳河北工业大学能源与环境工程学院天津300401 天津市清洁能源利用与污染物控制重点实验室天津300401

光学监测技术具备原位、快速、无损等优势,能够对膜污染进行实时在线监测,对于膜污染现象的深入理解和膜污染控制方法的优化具有重要意义。综述了近年来研究较多、发展较快的几类膜污染光学实时监测技术,包括穿透膜直接观察、光学相干... 详细信息

光学监测技术具备原位、快速、无损等优势,能够对膜污染进行实时在线监测,对于膜污染现象的深入理解和膜污染控制方法的优化具有重要意义。综述了近年来研究较多、发展较快的几类膜污染光学实时监测技术,包括穿透膜直接观察、光学相干断层扫描、激光共聚焦显微镜等显微成像技术,三维荧光光谱、拉曼光谱等分子光谱技术以及粒子图像测速技术,阐述了各技术的工作原理、衍生技术及在膜污染领域的典型应用,着重从监测区域和提供的膜污染信息等方面分析了其优缺点,并对未来光学监测技术的发展方向提出了展望,有助于推动其在实际膜法水处理工程中的应用。

关键词：膜污染光学技术实时监测显微成像分子光谱

维普期刊数据库博看期刊

Generation of Mathieu beams using angular pupil modulation

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2018年第12期27卷 277-281页

作者： zhijun ren Jinping He Yile Shi Key Laboratory of Optical Information Detecting and Display Technology Zhejiang Normal UniversityJinhua 321004China National Astronomical Observatones/Nanjing Institute of Astronomical Optics &Technology Chinese Academy of SciencesNanjing 210042China

By using an amplitude-type spatial light modulator to load angular spectrum of Mathieu function distribution along a narrow annular pupils, the Durnin’s experimental setup is extended to generate various types of Mathieu beams. As a special type of Mathieu beams, Bessel beams are also generated using this optical setup. Furthermore, the optical morphology of the Mathieu beams family are also presented and analyzed.

关键词： diffraction-free beams Mathieu beams angular modulation spatial light modulator

鄂西地区二叠系大隆组含气页岩岩相类型及储层特征

在线全文

学校读者我要写书评

暂无评论

吉林大学学报（地球科学版） 2024年第4期54卷 1154-1176页

作者：谢通陈威潘诗洋石万忠王亿张焱林段轲任志军湖北省地质调查院武汉430034 湖北省地质实验测试中心武汉430034 中国地质大学资源学院武汉430074 构造与油气资源教育部重点实验室(中国地质大学) 武汉430074

为研究鄂西地区上二叠统大隆组含气页岩岩相类型和储层特征,本文以鄂西地区恩施市恩地2井钻井岩心为研究对象,利用X-射线衍射全岩矿物分析(XRD)、总有机碳(TOC)质量分数测定、镜质体反射率(R_(o))测定、干酪根镜检、场发射扫描电镜(FE-S... 详细信息

为研究鄂西地区上二叠统大隆组含气页岩岩相类型和储层特征,本文以鄂西地区恩施市恩地2井钻井岩心为研究对象,利用X-射线衍射全岩矿物分析(XRD)、总有机碳(TOC)质量分数测定、镜质体反射率(R_(o))测定、干酪根镜检、场发射扫描电镜(FE-SEM)观察、CO_(2)和N2吸附实验、页岩含气量测定、微量元素测定等方法开展精细研究。结果显示:鄂西地区二叠系大隆组主要发育的岩相类型包括硅质岩相、黏土质硅质岩相和混合质硅质岩相,其中黏土质硅质岩相是大隆组有机碳质量分数最高的岩相类型;大隆组页岩孔隙类型多样,微孔和介孔贡献了页岩主要的孔隙体积和孔比表面积;高有机碳和高黏土矿物有利于页岩气的聚集和页岩中微小孔隙(孔径<50 nm)系统的建立,微孔和介孔中的吸附气是总含气量的重要组成部分。以含气量和有机碳质量分数为指标建立鄂西二叠系大隆组页岩评价标准,黏土质硅质岩相和混合质硅质岩相为Ⅱ_(1)类优势岩相类型,硅质岩为Ⅱ_(2)类页岩气优势岩相类型,恩地2井1 241.0~1 250.4 m井段为页岩气“甜点段”。页岩微量元素和有机碳质量分数关系表明大隆组高有机质含量是高古生产力和水体还原环境的共同结果,其中高古生产力是有机质富集的主要原因。

关键词：鄂西地区大隆组页岩岩相孔隙结构含气性储层

在线全文

学校读者我要写书评

暂无评论

基于深度学习的渗碳齿轮金相图像分割算法

轻工机械 2024年第5期42卷 66-73页

作者：董俊杰任志俊苏晨王琨江南大学机械工程学院江苏无锡214122 江南大学江苏省食品先进制造装备技术重点实验室江苏无锡214122

针对渗碳齿轮的质检依赖人工观察判断显微组织图像而造成不确定性较大的问题,课题组基于掩膜区域卷积神经网络Mask-RCNN(region-based convolutional neural network)提出了STN-Mask-RCNN模型,对渗碳齿轮中的残余奥氏体与马氏体进行图... 详细信息

针对渗碳齿轮的质检依赖人工观察判断显微组织图像而造成不确定性较大的问题,课题组基于掩膜区域卷积神经网络Mask-RCNN(region-based convolutional neural network)提出了STN-Mask-RCNN模型,对渗碳齿轮中的残余奥氏体与马氏体进行图像分割,将Mask-RCNN的主干特征提取网络替换为Swin Transformer模块,引入了神经架构检索(neural architecture search,NAS)算法与特征金字塔网络(feature pyramid network,FPN)相结合的NAS-FPN模块,并在Mask图像分割分支中加入卷积块注意力模块(convolutional block attention module,CBAM),最后与DeepLabV3+模型和U-Net模型进行对比实验,并进行消融实验分析每个模块与网络性能之间的关系。实验结果表明:课题组提出的模型对渗碳齿轮中残余奥氏体与马氏体的图形分割能力较强,平均像素精度(mean pixel accuracy,mPA)达90.64%,整体性能明显优于其他模型,且各个模块对于模型性能都有不同程度的提升。

关键词：渗碳齿轮金相图区域卷积神经网络RCNN Swin Transformer神经网络模型图像分割深度学习

Ce-based catalysts used in advanced oxidation processes for organic wastewater treatment: A review

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第10期32卷 109-116页

作者： Lijun Niu Ting Wei Qiangang Li Guangming Zhang Guang Xian Zeqing Long zhijun ren School of Energy and Enuironmental Engineering Hebei University of TechnologyTianjin 300130China School of Enuironment and Natural Resource Renmin University of ChinaBeijing 100872China

Refractory organic pollutants in water threaten human health and environmental safety,and advanced oxidation processes (AOPs) are effective for the degradation of these *** play vital role in AOPs,and Ce-based catalysts have exhibited excellent ***,the development and application of Ce-based catalysts in various AOPs have been *** study conducts the first review in this rapid growing *** paper clarifies the variety and properties of Ce-based *** applications in different AOP systems (catalytic ozonation,photodegradation,Fenton-like reactions,sulfate radicalbased AOPs,and catalytic sonochemistry) are *** Ce-based catalysts suit different reaction systems and produce different active ***,future research directions of Ce-based catalysts in AOP systems are suggested.

关键词： Ce-based catalysts Water treatment Redox properties Oxygen vacancies Advanced oxidation processes