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Combined proteomic and metabolomic studies on the liver of Amur sturgeon Acipenser schrenckii under titanium dioxide nanoparticle exposure

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Journal of Oceanology and Limnology 2024年第3期42卷 1001-1015页

作者： Zhou ZHOU Ting LIU jie kong Zhenxing ZHAO Junquan ZHU Key Laboratory of Aquacultural Biotechnology Ministry of Educationand Key Laboratory of Marine Biotechnology of Zhejiang ProvinceCollege of Marine SciencesNingbo UniversityNingbo 315000China Guizhou Fisheries Research Institute Guizhou Academy of Agriculture SciencesGuiyang 550000China

Nanomaterials,particularly titanium dioxide nanoparticles(TiO_(2)-NPs),are extensively utilized across various ***,their environmental release has raised concerns regarding their potential ecological and environmental *** reproductive toxicity of TiO_(2)-NPs in fish species has attracted considerable attention,yet conflicting research outcomes have been *** investigated the effects of TiO_(2)-NPs exposure on the liver of juvenile Amur sturgeon Acipenser schrenckii using label-free proteomic and untargeted metabolomic *** experiment included a control group and three groups exposed to different concentrations of TiO_(2)-NPs(low,TL;medium,TM;high,TH).Compared to the control group,9,19,and 25 proteins and 35,73,and 158 metabolites were differentially expressed in the TH,TM,and TL TiO_(2)-NP-exposed groups,*** differentially expressed genes(DEGs)were enriched in the Kyoto Encyclopedia for Genes and Genomes(KEGG)pathways related to glycolysis and ***,among the 126 correlated proteins,the most enriched pathways were associated with endocytosis and protein processing in the endoplasmic ***,syringic acid was significantly downregulated across all three TiO_(2)-NP-exposed *** obtain a comprehensive overview of the TiO_(2)-NP-induced expression changes,a co-regulated network of proteins and metabolites associated with TiO_(2)-NPs exposure was *** to TiO_(2)-NPs led to enrichment and alteration of pathways related to immune responses,including endocytosis,protein processing in the endoplasmic reticulum,and peroxisome proliferator-activated receptor(PPAR)*** conclusion,our findings indicate that exposure to TiO_(2)-NPs might disrupt glucose metabolism and induce immune responses,thus contributing to our understanding of the environmental impacts of nanomaterials and highlighting the need for further research and development of potential mitigation strategies.

关键词： TiO_(2)-nanoparticle exposure proteomics metabolomics glucose metabolism immune response

Engineering singlet and triplet excitons of TADF emitters by different host-guest interactions

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Aggregate 2024年第1期5卷 337-344页

作者： Wei Zhang jie kong Rui Zhi An Jiachen Zhang Yujie Zhou Lin-Song Cui Meng Zhou Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefeiChina Key Laboratory of Precision and Intelligent Chemistry University of Science and Technology of China(USTC)HefeiChina CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefeiChina

Understanding the host-guest interactions for thermally activated delayed fluorescence(TADF)emitters is critical because the interactions between the host matrices and TADF emitters enable precise control on the optoelectronic performance,whereas technologically manipulating the singlet and triplet excitons by using different kinds of host-guest interactions remains ***,we report a comprehensive picture that rationalizes host-guest interaction-modulated exciton recombination by using time-resolved *** found that the early-time relaxation is accelerated in polar polymer because dipole-dipole interaction facilitates the stabilization of the 1CT ***,an opposite trend is observed in longer delay time,and faster decay in the less polar polymer is ascribed to theπ-πinteraction that plays the dominant role in the later stage of the excited *** findings highlight the technological engineering singlet and triplet excitons using different kinds of host-guest interactions based on their electronic characteristics.

关键词： host-guest interaction singlet TADF triplet

Lightweight foam-like nitrogen-doped carbon nanotube complex achieving highly efficient electromagnetic wave absorption

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Journal of Materials Science & Technology 2024年第1期168卷 114-123页

作者： Zongcheng Li Jin Liang Zhiheng Wei Xin Cao Jiahui Shan Chunwei Li Xiaoyi Chen Dong Zhou Ruizhe Xing Chunjia Luo jie kong MOE Key Lab of Materials Physics and Chemistry in Extraordinary Conditions Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China Polymer Materials and Engineering Department School of Materials Science and EngineeringChang’an UniversityXi’an 710064China

With the increased electromagnetic wave(EMW)threat to military and human health,the develop-ment of EMW-absorbing materials is ***-organic framework derivatives containing magnetic nanoparticles and a carbon matrix are potential candidates for designing efficient EMW-absorbing ***,a zeolitic imidazolate framework-67(ZIF-67)-embedded three-dimensional melamine foam is pyrolyzed to afford carbon foam-based nitrogen-doped carbon nanotube composites,named 3D foam-like CoO/Co/*** CoO/Co particles are confined in the dielectric carbon nanotube *** carbon nanotubes provide considerable conductive loss,while CoO/Co magnetic particles are con-ducive to providing magnetic loss and adjusting impedance ***,the numerous defect structures introduced by heteroatomic doping(nitrogen)cause dipole polarization and simultaneously adjust impedance ***,the unique porous nanotube structure promotes multiple re-flections and scattering of EMWs,further optimizing impedance ***/Co/N-CNTs composites exhibit a minimum reflection loss of−52.3 dB at a matching thickness of 2.0 mm,while the correspond-ing effective absorption bandwidth is 5.28 GHz at a matching thickness of 2.2 *** study reports a novel approach to fabricating a lightweight high-performance EMW-absorbing material.

关键词： Lightweight porous carbon materials Carbon nanotubes CoO/Co magnetic particles Electromagnetic synergistic effect Impedance matching

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土石混合料-土工织物界面剪切特性研究

中国公路学报 2024年第1期37卷 35-43页

作者：刘飞禹姚嘉敏孔剑捷上海大学力学与工程科学学院上海200444

土石混合料加筋结构常见于高填方边坡工程中,其稳定性受筋土界面相互作用的影响。为了研究土石混合料-土工织物界面的相互作用机理,利用了室内大型直剪仪进行一系列直剪试验,分析了5种含石量(0%、25%、50%、75%、100%)、3种压实度(88%、... 详细信息

土石混合料加筋结构常见于高填方边坡工程中,其稳定性受筋土界面相互作用的影响。为了研究土石混合料-土工织物界面的相互作用机理,利用了室内大型直剪仪进行一系列直剪试验,分析了5种含石量(0%、25%、50%、75%、100%)、3种压实度(88%、92%、96%)以及3种竖向应力(100、200、300 kPa)对界面剪切特性的影响,并建立了界面剪胀系数的经验公式。结果表明:界面在低含石量(0%~25%)下表现出剪切软化趋势,在高含石量(50%~100%)下表现出剪切硬化趋势,且剪切应力-剪切位移曲线出现较为明显的波动现象;界面最大竖向位移随含石量和压实度的增大呈现出增大趋势,随竖向应力的增大呈现出减小趋势。界面摩擦角在低含石量下基本保持稳定,而后随含石量的增大表现出先增大后减小的趋势;界面似黏聚力的增长速率随压实度的增大而减小;结合含石量、竖向应力等因素,建立了剪胀系数经验公式,该公式能够较为准确地描述界面的体积变化情况。

关键词：路基工程筋土界面直剪试验土石混合料含石量压实度剪胀系数

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果蔬分拣设备研究现状及发展趋势

中国农机化学报 2024年第8期45卷 120-125页

作者：柳军孔杰皮杰周成钢江苏大学农业工程学院江苏镇江212013 江苏省农业科学院农业设施与装备研究所南京市210014

果蔬商品化产后处理能力较低导致我国的果蔬在国际市场上核心竞争力不足,其中后处理最主要的步骤就是果蔬分拣,而果蔬分拣设备能够有效的提高分拣效率,解放劳动力。分别从市场和科研两方面阐述国内外果蔬分拣设备的现状,分析现有果蔬分... 详细信息

果蔬商品化产后处理能力较低导致我国的果蔬在国际市场上核心竞争力不足,其中后处理最主要的步骤就是果蔬分拣,而果蔬分拣设备能够有效的提高分拣效率,解放劳动力。分别从市场和科研两方面阐述国内外果蔬分拣设备的现状,分析现有果蔬分拣设备存在的问题,讨论未来果蔬分拣的研究趋势,提出人工智能与机器视觉相结合的果蔬外部品质分拣技术和近红外光谱分析的内部品质分拣技术将是近期的研究热点,同时对易损果蔬采后分拣场景提出一种机械臂抓取式分拣设备方案,为后期解决娇嫩易损、精品果蔬的分拣问题提供参考。

关键词：果蔬分拣设备发展趋势机器视觉近红外光谱机械臂

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包覆式番茄采摘末端执行器的研究与设计

农机化研究 2024年第12期46卷 148-155页

作者：皮杰孔杰周科宏柳军江苏省农业科学院农业设施与装备研究所南京210014 江苏大学农业工程学院江苏镇江212000

番茄大多是成簇生长,当在簇中采摘单个番茄时末端执行器容易受到非目标番茄的干扰,导致采摘成功率降低。为此,根据番茄的特点设计了一种具有新采摘策略的末端执行器,可在非目标番茄干扰的情况下成功地从簇中包裹住目标番茄并收获它。同... 详细信息

番茄大多是成簇生长,当在簇中采摘单个番茄时末端执行器容易受到非目标番茄的干扰,导致采摘成功率降低。为此,根据番茄的特点设计了一种具有新采摘策略的末端执行器,可在非目标番茄干扰的情况下成功地从簇中包裹住目标番茄并收获它。同时,根据与目标番茄接触的非目标番茄数量对测试番茄进行分类,验证了末端执行器的性能。试验结果表明:整体采摘成功率为92.5%,整体无损采摘成功率为85%,非目标番茄与目标番茄的接触对采摘成功率的影响较小;只有2.5%的目标番茄轻微受损,2.5%的作物受损,5%的非目标番茄受损。因此,提出的具有新采摘策略的末端执行器是可行的,能够为今后的相关研究提供有价值的参考。

关键词：番茄采摘策略末端执行器包覆式

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准确理解中国式现代化的三个基础性问题

湖州师范学院学报 2024年第7期46卷 84-90页

作者：孔洁安徽医科大学马克思主义学院安徽合肥230000

中国式现代化是一个内涵极其丰富、特征非常鲜明的范畴,同时也是与资本主义现代化相区别的一种现代化形态。中国式现代化既遵循世界各国现代化的共同特征,又展现出自身的独特规定性。我们如何才能准确理解中国式现代化的核心要义和精神... 详细信息

中国式现代化是一个内涵极其丰富、特征非常鲜明的范畴,同时也是与资本主义现代化相区别的一种现代化形态。中国式现代化既遵循世界各国现代化的共同特征,又展现出自身的独特规定性。我们如何才能准确理解中国式现代化的核心要义和精神实质,关键在于把握好有关现代化理论的几个基础性问题,即明晰“现代化”与“现代性”的内在关联、理解“现代化一般”与“现代化特殊”的辩证关系、把握现代化“总体性”与“历史性”之间的内在逻辑。只有阐明上述三个基础性问题,我们才能准确认识中国式现代化的理论本质、核心要义与历史趋向,进而走出“现代化的迷思”。

关键词：中国式现代化现代性现代化一般现代化特殊总体性历史性

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涵道螺旋桨多工况设计

科学技术与工程 2024年第15期24卷 6510-6517页

作者：孔繁杰冯振宇中国民航大学安全科学与工程学院天津300300

单一工况下设计的涵道螺旋桨通常不能满足垂直起降飞机的多工况高效需求。基于叶素动量理论可以开展涵道螺旋桨多工况设计,其关键在于不同工况下螺旋桨拉力占比、修正来流速度的计算。在无螺旋桨几何的情况下,采用动量源方法对涵道拉力... 详细信息

单一工况下设计的涵道螺旋桨通常不能满足垂直起降飞机的多工况高效需求。基于叶素动量理论可以开展涵道螺旋桨多工况设计,其关键在于不同工况下螺旋桨拉力占比、修正来流速度的计算。在无螺旋桨几何的情况下,采用动量源方法对涵道拉力进行估算,提出了修正来流速度的计算方法,基于最小能量损失原则建立螺旋桨几何,采用多重参考系方法进行耦合计算流体力学(computational fluid dynamics,CFD)修正,得到单一工况下弦长扭转角关系、螺旋桨拉力占比以及修正来流速度。通过改变设计升力系数及转速,使不同工况下涵道螺旋桨的弦长及扭转角相匹配。分析结果表明,动量源方法计算的涵道拉力占比较大,来流速度修正方法可减少相同工况下耦合CFD求解计算量。多工况设计可有效提高涵道螺旋桨的综合效率。

关键词：涵道螺旋桨叶素动量理论修正设计多工况气动特性

"互联网+"时代数学建模融入高职数学课堂研究

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