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Nanotechnology combining photoacoustic kinetics and chemical kinetics for thrombosis diagnosis and treatment

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Chinese Chemical Letters 2021年第12期32卷 3665-3674页

作者： Hao Tian Lin Lin Zhaojing Ba fangchao Xue Yanzhao Li Wen Zeng Department of Cell Biology Army Medical UniversityChongqing 400038China Department of Anatomy Army Medical UniversityChongqing 400038China Departments of Neurology Southwest HospitalArmy Medical UniversityChongqing 400038China

Thrombotic disease is a major problem that endangers human health. At present, MRI and CT are commonly used clinically to diagnose thrombosis, and thrombolytic drugs are used for treatment), but the diagnosis time is lagging, the utilization of drugs is low, and the resulting systemic toxicity problems such as side effects lead to poor treatment effects. Nanotechnology combining photoacoustic dynamics and chemical dynamics has shown great application value in tumor targeting, diagnosis, detection and treatment. It has also become a new direction in the diagnosis and treatment of thrombotic diseases, and has created new applications in the field of nanomaterials. This review summarizes the new progress of this combination in the diagnosis and treatment of thrombotic diseases according to the differences in the construction of the nanotherapy system, at the same time, we put forward some new problems and prospects for the integration of thrombosis diagnosis and treatment.

关键词： Nanotechnology Photoacoustic kinetics Chemical kinetics Drug delivery and release Thrombosis disease

Calibratio performance evaluation of the spaceborne hyperspectral CHRIS imager

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Science China(Technological Sciences) 2006年第z2期49卷 88-96页

作者： ZHANG Xia ZHANG Bing HU fangchao TONG Qingxi State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications of Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications of Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications of Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications of Chinese Academy of Sciences Beijing 100101 China

The CHRIS (Compact High Resolution Imaging Spectrometer) is a new imaging spectrometer, carried on board a new space platform called PROBA (Project for On Board Autonomy). The satellite was successfully launched in October 2001 by the European Space Agency (ESA). CHRIS operates over the visible/near infrared band (400-1050 nm). It has five work modes and can reach a maximum of 62 spectral bands. In this research, atmospheric correction based on hyperspectral images was performed on CHRIS images by using the popular radiance transfer code ACORN (Atmospheric Correction Now) and empirical algorithms. ACORN was also used to evaluate the calibration performance of CHRIS by the retrieved spectra of typical vegetation and soil. As a result,the maize reflectance spectrum corrected by ACORN could characterize vegetation reflectance in the range of 498-750 nm, but gave a fairly large deviation beyond 750 nm,showing the deficiency of spectral calibration beyond 750 nm. The ACORN-derived soil reflectance decreased beyond 800 nm, which was quite inconsistent with field-spectrummeasurement and showed that the calibration accuracy couldn't meet the requirements of ACORN for spectral and radiometric calibration within a certain spectral range. In addition,the stripes on the retrieved water-vapor content map indicated that the radiance-calibration performance of CHRIS is not perfect. As the first spaceborne hyperspectral imager of ESA, the calibration performance of CHRIS needs to be improved.

关键词： CHRIS, hyperspectral, calibration performance, image-based atmospheric correction.

荆棘状ZnO/Au/Cu_(2)O的合成及其性能研究

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化学与粘合 2024年第4期46卷 345-349页

作者：裴霏郭亮雷方超眭玲西安交通工程学院土木工程学院陕西西安710300 机械工业勘察设计研究院有限公司陕西西安710043 大荔中学陕西渭南715100

通过水热法制备了荆棘状ZnO/Au/Cu_(2)O复合材料。采用XRD、SEM、EDS能谱、UV-Vis DRS和UV-Vis光谱对所得ZnO/Au/Cu_(2)O复合材料进行了系统表征。结果表明:成功合成了荆棘状ZnO/Au/Cu_(2)O复合材料,该材料对甲基橙的降解率在90min内达... 详细信息

通过水热法制备了荆棘状ZnO/Au/Cu_(2)O复合材料。采用XRD、SEM、EDS能谱、UV-Vis DRS和UV-Vis光谱对所得ZnO/Au/Cu_(2)O复合材料进行了系统表征。结果表明:成功合成了荆棘状ZnO/Au/Cu_(2)O复合材料,该材料对甲基橙的降解率在90min内达到99.0%,分别是ZnO/Au的1.4倍、ZnO的1.75倍。5次循环后,甲基橙的降解率仍保持在75%以上,说明ZnO/Au/Cu_(2)O复合材料具有良好的光催化稳定性。以ZnO/Au/Cu_(2)O复合材料为催化剂,紫外光照3 h后甲基橙溶液中总有机碳的去除率可达到86%,展现出可观的深度氧化降解能力。

关键词：氧化亚铜复合材料氧化降解

低温等离子体耦合微酸性电解水对三文鱼的保鲜作用

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中国食品学报 2024年第2期24卷 228-238页

作者：朱文慧谭桂芝步营李学鹏励建荣崔方超檀茜倩孟玉琼马睿郭晓华渤海大学食品科学与工程学院辽宁省高校重大科技平台“食品贮藏加工及质量安全控制工程技术研究中心” 辽宁锦州121013 海洋食品精深加工关键技术省部共建协同创新中心、大连工业大学辽宁大连116034 青海大学西宁810016 山东美佳集团有限公司山东日照276800

采用单因素和Box-Behnken响应面试验优化低温等离子耦合微酸性电解水对三文鱼杀菌的工艺条件,通过菌落总数、pH值、挥发性盐基氮(TVB-N)、硫代巴比妥酸反应产物(TBARS)值、羰基含量和色差等指标比较等离子体活化水、微酸性电解水及低温... 详细信息

采用单因素和Box-Behnken响应面试验优化低温等离子耦合微酸性电解水对三文鱼杀菌的工艺条件,通过菌落总数、pH值、挥发性盐基氮(TVB-N)、硫代巴比妥酸反应产物(TBARS)值、羰基含量和色差等指标比较等离子体活化水、微酸性电解水及低温等离子体耦合微酸性电解水对三文鱼4℃贮藏的保鲜效果。结果显示,当低温等离子体活化时间5 min,功率320 W,浸泡时间20 min,有效氯质量浓度50 mg/mL,料液比1∶6时杀菌效果最优,均可延长三文鱼贮藏期,而低温等离子体耦合微酸性电解水更有利于缓解脂肪和蛋白氧化。本研究为水产品保鲜提供了新思路。

关键词：三文鱼杀菌低温等离子体微酸性电解水保鲜

传统腌渍蔬菜中高产AI-2信号分子乳酸菌的筛选及其益生特性

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中国食品学报 2024年第1期24卷 83-91页

作者：吕欣然刘雪晴顾振辰吕孟敏励建荣檀茜倩崔方超白凤翎俞张富沈荣虎渤海大学食品科学与工程学院、生鲜农产品贮藏加工及安全控制技术国家地方联合工程研究中心、辽宁省食品安全重点实验室辽宁锦州121013 杭州萧山农业发展有限公司杭州311215

LuxS/AI-2作为种间交流群体感应系统常存在于乳酸菌中,具有调控其生物膜形成,耐酸、耐胆盐等益生特性。采用哈维氏弧菌BB170菌株报告法筛选产AI-2信号分子乳酸菌,利用PCR测序检测luxS基因的表达,通过耐酸、耐胆盐、抑菌性及细胞黏附性... 详细信息

LuxS/AI-2作为种间交流群体感应系统常存在于乳酸菌中,具有调控其生物膜形成,耐酸、耐胆盐等益生特性。采用哈维氏弧菌BB170菌株报告法筛选产AI-2信号分子乳酸菌,利用PCR测序检测luxS基因的表达,通过耐酸、耐胆盐、抑菌性及细胞黏附性评价高产AI-2乳酸菌的益生特性。结果表明:从200株乳酸菌中筛选出10株产AI-2乳酸菌,其中植物乳杆菌SCT-2为高产AI-2信号菌株。验证菌株SCT-2中存在luxS群体感应调控基因。高产AI-2菌株SCT-2的耐酸和耐胆盐存活率分别为14%~92%和63%~89%,抑菌直径范围17.50~19.43 mm,黏附细胞数为102 CFU/细胞。与低产AI-2乳酸菌菌株比较,生物膜产量、耐酸、耐胆盐、抑菌率及黏附率分别提高111.4%,8%,15%,26.7%,197%。结论:luxS基因是AI-2信号合成的关键基因,LuxS/AI-2群体感应提高了乳酸菌的生物膜形成能力、耐酸性、耐胆盐性、抑菌能力及细胞黏附力等益生性,为开发良好益生特性的乳酸菌生物制剂提供了理论参考。

关键词：乳酸菌群体感应 AI-2信号分子益生特性

Flexible transparent wood enabled by epoxy resin and ethylene glycol diglycidyl ether

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Journal of Forestry Research 2021年第4期32卷 1779-1787页

作者： Hangchuan Cai Zhiqi Wang Di Xie Panpan Zhao Jianping Sun Daoyu Qin fangchao Cheng Guangxi Key Laboratory of Processing for Nonferrous Metallic and Featured Materials School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China College of Material Science and Engineering Central South University of Forestry and TechnologyChangsha 410004China

Transparent wood has potential application in intelligent building,solar cell,electronics,and other advanced materials,while its single functionability hinders its further *** transparent wood(FTW)was prepared by alkaline pretreatment and bleaching treat-ment of paulownia wood followed by impregnation of epoxy resin and ethylene glycol diglycidyl ether(EDGE).The eff ect of delignifi cation degree on the optical and mechani-cal properties of FTW was studied,and the infl uence of the epoxy/EDGE ratio on the fl exibility and mechanical proper-ties of FTW was also *** results showed that higher delignifi cation degree resulted in higher transmit-tance of *** EDGE addition led to better fl exibility of FTW,while overmuch addition of EDGE will reduce the mechanical *** optimal FTW sample resulted in a high transmittance of 89%and an ultrahigh haze value of 97%with outstanding fl exibility and excellent mechanical *** investigation of FTW broadens the research fi eld of transparent wood,and provides great possibility for its application in fl exible wearable devices and fl exible materials.

关键词： Transparent wood Epoxy resin Ethylene glycol diglycidyl ether Flexibility

Replanting of broadleaved trees alters internal nutrient cycles of native and exotic pines in subtropical plantations of China

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Forest Ecosystems 2022年第5期9卷 701-709页

作者： Yong Lin Chengkang Xia Gaoyang Wu fangchao Wang Shengnan Wang Yuanqiu Liu Fusheng Chen Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed Jiangxi Agricultural UniversityNanchang330045China Jiangxi Forestry Resources Monitoring Center Nanchang330045China Postdoctoral Research Station of Management Science and Engineering Nanchang UniversityNanchang330031China Jiangxi Provincial Key Laboratory of Silviculture College of ForestryJiangxi Agricultural UniversityNanchang330045China

Background:The replanting of broadleaved trees in pure coniferous plantations is widely implemented,as mixed plantations are generally more stable and ***,the effect of interspecific interactions between broadleaved and coniferous trees on internal nutrient cycles of conifers remains ***:We selected pure coniferous plantations of a native(Pinus massoniana)and an exotic(***)pine species and their corresponding mixed plantations with broadleaved trees(Schima superba)in subtropical China,and measured the nitrogen(N)and phosphorus(P)contents in the rhizosphere soils,fine roots,twigs,needles and needle litter of *** calculated the root capture,needle resorption and translocation of N and P by pines to determine the mobility of nutrients in ***:Although the N and P in the rhizosphere soils increased due to the replanting of broadleaved trees,the N and P contents in the aboveground tissues of the two pine species did not increase in mixed *** planting had a negative effect on the N and P capture of native pine and a positive effect on that of exotic *** N and P resorption efficiencies increased in native pine but were unchanged in exotic pine after the replanting of *** pine preferentially employed an aboveground nutrient resorption strategy,whereas exotic pine tended to adopt a belowground nutrient capture strategy after *** of N and P in trees was detected,which reflected the trade-offs between root nutrient capture and needle nutrient ***:The effect of mixed planting varied between the species of native and exotic pines,and the internal nutrient cycles of both pine species might be dominated by interspecific interaction effects on nutrients rather than soil *** study highlights the importance of selecting suitable broadleaved species for replanting in coniferous plantations.

关键词： Interspecific interaction Mixture effect Needle resorption N and P translocation Root capture

Hybrid CSI-RS Transmission Mechanism-Based 3D Beamforming Scheme for FDD Massive MIMO System

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China Communications 2016年第S2期13卷 109-119页

作者： fangchao Zhang Shaohui Sun Qiubin Gao Hui Li School of Electronic and Information Engineering Beihang University State Key Laboratory of Wireless Mobile Communications China Academy of Telecommunications Technology

Massive multiple-input multipleoutput(MIMO) refers to the idea that equipping base station(BS) with a large number of antenna elements,and features the ability of three dimensional(3D) beamforming technique to enable improvement in system *** prior works on massive MIMO generally rely on a common assumption of the whole channel characteristics are perfectly known at both user equipment(UE) and BS,however,this is quite difficult to realize in practical frequency division duplexing(FDD) system since the channel state information reference signal(CSIRS) overhead and CSI feedback overhead are proportional to the number of antenna *** this paper,two hybrid CSI-RS transmission mechanism-based 3D beamforming schemes are proposed in FDD massive MIMO system,in which non-beamformed CSI-RS configuration is utilized in conjunction with beamformed CSIRS *** the proposed schemes,an angle quantization-based vertical codebook and a DFT-based horizontal codebook are designed,respectively,and an eigenvalue decompositionbased precoding matrix indicator(PMI)selection algorithm is also proposed for CSI *** results show that the proposed 3D beamforming schemes achieve significant improvement in system capacity without incurring excessive CSI-RS overhead.

关键词： massive MIMO 3D beamforming CSI-RS codebook feedback PMI

考虑源荷不确定性的主动配网智能开关故障重构

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机械与电子 2024年第9期42卷 57-64页

作者：沈兴杰陈沛靳方超闫崇松张磐国网天津市电力公司城南供电分公司天津300201

针对源荷不确定环境下主动配网重构问题,提出了一种考虑源荷不确定性的主动配网智能开关故障重构方法。该方法采用机会约束表达了不确定负荷和分布式光伏造成的随机切负荷耐受程度,并作为惩罚项与系统运行成本合并成为故障重构策略的最... 详细信息

针对源荷不确定环境下主动配网重构问题,提出了一种考虑源荷不确定性的主动配网智能开关故障重构方法。该方法采用机会约束表达了不确定负荷和分布式光伏造成的随机切负荷耐受程度,并作为惩罚项与系统运行成本合并成为故障重构策略的最小化目标,同时,将智能软开关和传统开关的动作、网络潮流以及变流器的非线性损耗表达为故障重构策略的约束条件。通过线性逼近方法,将原始重构策略模型表达为混合整数二阶锥问题,再运用基于全局一致优化的并行交替方向乘子法对重构策略进行求解。通过17和34节点配电系统展示了所提故障重构方法的应用效果。

关键词：故障重构机会约束混合整数二阶锥配电网分布式光伏