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Flexible mille-feuille structure electromagnetic interference shielding film with excellent thermal conductivity and Joule heating

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Nano Research 2024年第5期17卷 4544-4554页

作者： Dingwen Yin Huijuan Xiu Simin Wang Yanfei Pan Na Li rui Cheng shaoyan Huang sha Fan Jinbao Li College of Bioresources Chemical&Materials Engineering Shaanxi University of Science&TechnologyXi'an 710021China National Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper DevelopmentXi'an 710021China College of Material Science and Art Design Inner Mongolia Agricultural UniversityHohhot 010018China

The intelligent electronic devices have urgent demands for electromagnetic interference(EMI)shielding films with excellent heat dissipation ***,it is challenging to obtain excellent EMI shielding and thermal conductivity performances ***,inspired by mille-feuille structure,the multifunctional EMI shielding films developed by a layer-by-layer self-assembly and hot-pressing *** ingenious introduction of silver nanoparticles(AgNPs)with large specific surface area and highly conductive into the network formed by TEMPO-oxidized cellulose nanofibrils(TOCNFs)with large aspect ratio to form the TOCNFs/*** the graphene nanoplates(GNPs)with high conductivity loss distributed alternately with TOCNFs/AgNPs to construct mille-feuille structure,which had highly efficient conductive network,complete thermally conduction pathway and rich heterogeneous ***,the designed films presented high electrical conductivity of 8520 S/cm,superb EMI effectiveness(SE)of 98.05 dB,and excellent thermal conductivity of 18.82 W/(m·K).Furthermore,the films possessed outstanding Joule heating performances with low voltages,including high heating temperature(100℃),fast response time(<20 s),and impressive heating stability and ***,such high-performance EMI shielding films with fascinating thermal conductivity and Joule heating performances have substantial application in flexible electronics,electromagnetic waves shielding and thermal management.

关键词： TEMPO-oxidized cellulose nanofibrils/silver nanoparticles(TOCNFs/AgNPs) mille-feuille structure electromagnetic interference shielding thermal conductivity Joule heating

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非自由交通流的non-FIFO车辆轨迹估计算法

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交通运输工程学报 2022年第2期22卷 246-258页

作者：胡尧赵睿莎贵州大学数学与统计学院贵州贵阳550025 贵州大学公共大数据国家重点实验室贵州贵阳550025

将三角基本图的交通状态细分为自由流、中断和拥堵;基于非自由流特性,重新划分了U型时空域,以此找到适合的波速范围;重新确定了上游边界累积流量,使得边界函数刻画不过于宽泛;建立了非自由流Newell模型,并提出了使用该模型的判断条件;... 详细信息

将三角基本图的交通状态细分为自由流、中断和拥堵;基于非自由流特性,重新划分了U型时空域,以此找到适合的波速范围;重新确定了上游边界累积流量,使得边界函数刻画不过于宽泛;建立了非自由流Newell模型,并提出了使用该模型的判断条件;引入了车辆秩参数,达到在多车道上描述车辆超车现象的目的,并建立了更精确的车辆秩估计模型,从而建立了非自由流Newell扩展模型;提出了针对非自由流下2种情形的车辆轨迹估计算法,根据是否存在超车现象分为先进先出(FIFO)情形与非先进先出(non-FIFO)情形;结合数值模拟和实际交通案例,验证了算法的有效性。研究结果表明:2种情形下的轨迹估计算法都是有效的,当超车现象存在时,non-FIFO情形的估计效果较准确和稳健;在数值模拟研究中,non-FIFO情形的估计误差相对FIFO情形下降13.45%,non-FIFO情形更优;实际交通案例中,2个小汽车数据集在non-FIFO情形的估计误差相对FIFO情形均有所下降,下降幅度分别为2.38%、2.04%,且估计误差均服从高斯混合模型;公交车数据集因不存在超车现象,non-FIFO与FIFO情形的估计误差相等,均为4.90%,且估计误差服从伽马分布。可见,所建立的非自由流Newell模型对于中断多或拥堵状态占比多的交通数据均是有效可行的,且所提出的non-FIFO和FIFO情形的轨迹估计算法效果表现良好。

关键词：交通流轨迹估计非自由流Newell模型非先进先出情形车辆秩修正系数

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Percutaneous ultrasound-guided coaxial core needle biopsy for the diagnosis of multiple splenic lesions: A case report

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World Journal of Gastrointestinal Surgery 2024年第2期16卷 616-621页

作者： sha-Hong Pu Wu-Yong-Ga Bao Zhen-Peng Jiang rui Yang Qiang Lu Department of Medical Ultrasound West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND The overlap of imaging manifestations among distinct splenic lesions gives rise to a diagnostic ***,a definitive diagnosis primarily relies on his-tological *** ultrasound(US)-guided coaxial core needle biopsy(CNB)not only procures sufficient tissue to help clarify the diagnosis,but reduces the incidence of puncture-related *** SUMMARY A 41-year-old female,with a history of pulmonary tuberculosis,was admitted to our hospital with multiple indeterminate splenic ***-scale ultrasono-graphy demonstrated splenomegaly with numerous well-defined hypoechoic *** contrast-enhanced computed tomography(CT)showed an en-larged spleen with multiple irregular-shaped,peripherally enhancing,hypodense *** emission CT revealed numerous abnormal hyperglycemia *** imaging findings strongly indicated the possibility of infectious disease as the primary concern,with neoplastic lesions requiring *** obtain the precise pathological diagnosis,the US-guided coaxial CNB of the spleen was ca-rried *** patient did not express any discomfort during the *** Percutaneous US-guided coaxial CNB is an excellent and safe option for obtaining precise splenic tissue samples,as it significantly enhances sample yield for exact pathological analysis with minimum trauma to the spleen parenchyma and sur-rounding tissue.

关键词： Spleen Splenic disease Ultrasound Biopsy Ultrasound-guided coaxial core needle biopsy Case report

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“Steric Armor”Strategy of Blue Fluorescent Emitters against Photooxidation-Induced Degradation

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Chinese Journal of Chemistry 2024年第11期42卷 1223-1229页

作者： sha-sha Wang Jing-rui Zhang Kuan-De Wang Hao-Ran Li Peng-Hui Meng Yang Zhou Xiang Yu Ying Wei Quan-You Feng Yu-He Kan Ling-Hai Xie Centre for Molecular Systems and Organic Devices(CMSOD) State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts&TelecommunicationsNanjingJiangsu210023 China Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials School of Chemistry and Chemical EngineeringHuaiyin Normal UniversityHuai'anJiangsu223300 China

Stability against oxygen is an important factor affecting the performance of organic semiconductor *** photooxidation stability can prolong the service life of the device and maintain the mechanical and photoelectric properties of the ***,various encapsulation methods from molecular structure to macroscopic device level are used to improve photooxidation ***,we adopted a crystallization strategy to allow 14H-spiro[dibenzo[c,h]acridine-7,9′-fluorene](SFDBA)to pack tightly to resist fluorescence decay caused by *** this case,the inert group of SFDBA acts as a“steric armor”,protecting the photosensitive group from being attacked by ***,compared with the fluorescence quenching of SFDBA powder under 2 h of sunlight,SFDBA crystal can maintain its fluorescence emission for more than 8 h under the same ***,the photoluminescence quantum yields(PLQYs)of the crystalline film is 327%higher than that of the amorphous *** shows that the crystallization strategy is an effective method to resist oxidation.

关键词： Organic semiconductor Photooxidation Spirocyclic aromatic hydrocarbons Crystal engineering Fluorescence

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Detection and analysis of landslide geomorphology based on UAV vertical photogrammetry

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Journal of Mountain Science 2024年第4期21卷 1190-1214页

作者： BI rui GAN Shu YUAN Xiping LI Kun LI Raobo LUO Weidong CHEN Cheng GAO sha HU Lin ZHU Zhifu School of Land and Resources Engineering Kunming University of Science and TechnologyKunming 650093China Plication Engineering Research Center of Spatial Information Surveying and Mapping Technology in Plateau and Mountainous Areas Set by Universities in Yunnan Province Kunming 650093China West Yunnan University of Applied Sciences Key Laboratory of Mountain Real Scene Point Cloud Data Processing and Application for Universities in Yunnan ProvinceDali 671006China

High-resolution landslide images are required for detailed geomorphological analysis in complex topographic environment with steep and vertical landslide *** study proposed a vertical route planning method for unmanned aerial vehicles(UAVs),which could achieve rapid image collection based on strictly calculated route *** effectiveness of this method was verified using a DJI Mavic 2 Pro,obtaining high-resolution landslide images within the Dongchuan debris flow gully,in the Xiaojiang River Basin,Dongchuan District,Yunnan,China.A three-dimensional(3D)model was constructed by the structure-from-motion and multi-view stereo(SfM-MVS).Micro-geomorphic features were analyzed through visual interpretation,geographic information system(GIS),spatial analysis,and mathematical statistics *** results demonstrated that the proposed method could obtain comprehensive vertical information on landslides while improving measurement *** 3D model was constructed using the vertically oriented flight route to achieve centimeter-level accuracy(horizontal accuracy better than 6 cm,elevation accuracy better than 3 cm,and relative accuracy better than 3.5 cm).The UAV technology could further help understand the micro internal spatial and structural characteristics of landslides,facilitating intuitive acquisition of surface *** slope of landslide clusters ranged from 36°to 72°,with the majority of the slope facing east and *** elevation levels were relatively consistent while middle to lower elevation levels gradually decreased from left to right with significant variations in lower elevation *** the rainy season,surface runoff was abundant,and steep topography exacerbated changes in surface *** route method is suitable for unmanned aerial vehicle(UAV)landslide surveys in complex mountainous *** geomorphological analysis methods used will provide references for identifying and describing topographic

关键词： UAV Landslide Vertical route SfM-MVS Topographic features

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Arbuscular mycorrhiza and plant growth promoting endophytes facilitates accumulation of saponin under moderate drought stress

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Chinese Herbal Medicines 2024年第2期16卷 214-226页

作者： Shubiao Qian Qing Zhang sha Li rui Shi Xiahong He Shuhui Zi Tao Liu Yunnan Agricultural University Kunming 650201China National&Local Joint Engineering Research Center on Gemplasm Utilization&Innovation of Chinese Medicinal Materials in Southwest China Yunnan Agricultural UniversityKunming 650201China Institute of Sericulture and Honeybee Honghe 661101China Southwest Forestry University Kunming 650201China

Objective: Paris polyphylla var. yunnanensis, one of the important medicinal plant resources in Yunnan,China, usually takes 6–8 years to be harvested. Therefore, it is urgent to find a method that can not only shorten its growth years, but also improve its quality. In this study, we examined the effects of a combination treatment of arbuscular mycorrhizal fungi(AMF) and plant growth-promoting endophytes(PGPE)and drought stress on the accumulation of saponins in ***: P. polyphylla var. yunnanensis was infected with a mixture of AMF and PGPE under drought stress. The content of saponins, as well as morphological, physiological, and biochemical indicators, were all measured. The UGTs gene related to saponin synthesis was obtained from transcriptome data by homologous comparison, which were used for RT-PCR and phylogenetic ***: Regardless of water, AMF treatment could infect the roots of P. polyphylla var. yunnanensis, however double inoculation with AMF and PGPE(AMF + PGPE) would reduce the infection rate of AMF. Plant height, aboveground and underground fresh weight did not differ significantly between the single inoculation AMF and the double inoculation treatment under different water conditions, but the inoculation treatment significantly increased the plant height of P. polyphylla var. yunnanensis compared to the noninoculation treatment. Single inoculation with AMF considerably increased the net photosynthetic rate,stomatal conductance, and transpiration rate of P. polyphylla var. yunnanensis leaves under various water conditions, but double inoculation with AMF + PGPE greatly increased the intercellular CO2concentration and chlorophyll fluorescence parameter(Fv/Fm). Under diverse water treatments, single inoculation AMF had the highest proline content, whereas double inoculation AMF + PGPE may greatly improve the amount of abscisic acid(ABA) and indoleacetic acid(IAA) compared to normal water under moderate drought. Double inoculation AMF + P

关键词： arbuscular mycorrhizal fungi gene expression Paris polyphylla Smith var.yunnanensis (Franch.)Hand.-Mazz plant growth-promoting endophytes steroidal saponin

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浸渍法制备C_(18)反相高效液相色谱固定相

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分析试验室 2018年第9期37卷 1075-1079页

作者：李瑞沙天津大学药物科学与技术学院天津300072

提出了一种浸渍法制备C18高效液相色谱固定相的方法。以十八烷二甲基氯硅烷(ODC)为键合试剂、六甲基二硅氮烷(HMDS)为封尾试剂,通过浸渍法制备得到C18高效液相色谱固定相。采用红外光谱(FTIR)、元素分析(EA)和氮气吸附与解吸附(BET)对... 详细信息

提出了一种浸渍法制备C18高效液相色谱固定相的方法。以十八烷二甲基氯硅烷(ODC)为键合试剂、六甲基二硅氮烷(HMDS)为封尾试剂,通过浸渍法制备得到C18高效液相色谱固定相。采用红外光谱(FTIR)、元素分析(EA)和氮气吸附与解吸附(BET)对该合成材料进行了表征,并通过SRM870评价体系对其疏水选择性、金属离子以及硅羟基活性进行评价。与商品柱Kromasil C18相比,浸渍法制备的C18固定相具有较少的金属离子活性及较低的硅羟基残余量。通过重复性考察,说明浸渍法制备的C18柱键合层稳定,对溶质的保留重现性良好。

关键词：高效液相色谱法反相色谱固定相浸渍法 SRM870 重复性

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中国科技计划项目绩效管理研究综述

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科技管理研究 2021年第16期41卷 204-208页

作者：沙锐天津大学管理与经济学部天津300072 科学技术部高技术研究发展中心北京100044

对中国科技计划项目绩效管理体系构建、评价指标以及评价方法等方面进行回顾与评述,结果发现:部分学者对"绩效管理"与"绩效评价"的概念存在混淆的情况;绩效管理研究热度与政府相关政策出台具有一定的相关性;有关绩效评价指标体系与评价... 详细信息

对中国科技计划项目绩效管理体系构建、评价指标以及评价方法等方面进行回顾与评述,结果发现:部分学者对"绩效管理"与"绩效评价"的概念存在混淆的情况;绩效管理研究热度与政府相关政策出台具有一定的相关性;有关绩效评价指标体系与评价方法的研究较为丰富。结合中国科技计划项目绩效管理实践指出,目前相关研究存在忽视对项目实施过程绩效管理、对效应类指标研究较为薄弱、过于依赖定性评价造成理论与实践部分脱节等不足。

关键词：科技计划项目绩效管理绩效评价

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Biomimetic Integrated Nanozyme for Flare and Recurrence of Gouty Arthritis

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Asian Journal of Pharmaceutical Sciences 2024年第3期19卷 131-145页

作者： rui Wang Tongyao Liu Xinhong Li Enhao Lu Yiting Chen Kuankuan Luo Tao Wang Xueli Huang Zhiwen Zhang Shilin Du Xianyi sha Key Laboratory of Smart Drug Delivery(Ministry of Education) Institutes of Integrative MedicineDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai 201203China Department of Emergency Medicine Shanghai Geriatric Medical CenterShanghai 201104China Department of Emergency Medicine Zhongshan HospitalFudan UniversityShanghai 200032China

Flare and multiple recurrences pose significant challenges in gouty *** treatments provide temporary relief from inflammation but fail to promptly alleviate patient pain or effectively prevent subsequent *** should also be noted that both anti-inflammation and metabolism of uric acid are necessary for gouty arthritis,calling for therapeutic systems to achieve these two goals *** this study,we propose a biomimetic integrated nanozyme,HMPB-Pt@MM,comprising platinum nanozyme and hollow Prussian *** demonstrates anti-inflammatory properties by eliminating reactive oxygen species and reducing infiltration of inflammatory ***,it rapidly targets inflamed ankles through the camouflage of macrophage ***,HMPB-Pt@MM exhibits urate oxidase-like capabilities,continuously metabolizing locally elevated uric acid concentrations,ultimately inhibiting multiple recurrences of gouty *** summary,HMPB-Pt@MM integrates ROS clearance with uric acid metabolism,offering a promising platform for the treatment of gouty arthritis.

关键词： Gouty arthritis Inflammation Nanozyme Platinum Prussian blue

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不同术式对胃癌穿孔患者疗效的影响评价

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现代预防医学 2012年第8期39卷 2102-2103页

作者：涂瑞沙解放军第一八七医院肿瘤泌尿外科

目的探讨不同术式对胃癌穿孔治疗的临床疗效。方法 2006年9月～2009年9月期间,某院诊治的90例胃癌穿孔患者,根据术式分为穿孔修补术组、姑息性切除术组和根治性切除术组,每组各30例,对比其手术疗效。结果术后随访2～5年。与穿孔修补术相... 详细信息

目的探讨不同术式对胃癌穿孔治疗的临床疗效。方法 2006年9月～2009年9月期间,某院诊治的90例胃癌穿孔患者,根据术式分为穿孔修补术组、姑息性切除术组和根治性切除术组,每组各30例,对比其手术疗效。结果术后随访2～5年。与穿孔修补术相比,姑息性切除和根治性切除术的死亡率和并发症明显降低,P﹤0.05,差异有统计学意义;与穿孔修补术组相比,姑息性切除术组和根治性切除术组的生存期明显延长,P﹤0.05,差异有统计学意义;与姑息性切除术相比(580.3±35.1)d,根治性切除术组的生存期明显延长(770.6±46.2)d,P﹤0.05,差异有统计学意义。结论姑息性切除术和根治性切除术,都可以明显延长胃癌穿孔患者的生存期,根治性切除术是唯一可能治愈胃癌的手术方式。

关键词：术式胃癌穿孔疗效

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