检索结果-南通市图书馆

Food Science and Human Wellness 2024年第1期13卷 482-493页

作者： Zhihui Yu Lingyu Fan fei tai Lixin Zhang Xiaoyu Zhang Yisheng Chen College of Food Science and Engineering Shanxi Agricultural UniversityTaigu 030801China Insitute of Food Nutrition and Safety Shanxi Agricultural UniversityTaiyuan 030031China Shanxi Key Laboratory of Edible Fungi for Loess Plateau Taigu 030801China

In this study,the impacts of egg consumption on mice model of metabolic syndrome(Met S)were comparatively *** were divided into five groups(n=8):normal diet group(ND),high-fat diet group(HFD),HFD with whole egg group(WE),HFD with free-yolk egg substitute group(YFES),and HFD with lovastatin group(Lov).Main biochemical indexes and a non-targeted lipidomic analysis were employed to insight the lipid profile changes in *** was revealed that WE could significantly improve serum biochemical indexes by reducing body weight,low-density lipoprotein cholesterol(LDL-C)and total cholesterol(TC),while increasing high-density lipoprotein *** exhibited remarkably better performance in increasing phosphatidylglycerol and phosphatidic acids,while decreasing phosphatidylinositol than WE.A total of 50 differential lipids biomarkers tightly related to glycerophospholipids metabolism were screened *** C18:2 and C12:1,SM(d18:0/12:0),and SM(d18:1/14:1)were significantly upregulated in YFES compared to *** reduced expression of SREBP-1c and Cpt1a,while did not affect the expression of PPAR-α.Sphingomyelin biomarkers were positively related to the TC(|r|>0.6),while PPAR-αwas negatively correlated with triglyceride and LDL-C *** sum up,YFES attenuated HFD-induced Met S by improving the serum phospholipids,which account for its modulation of glycerophospholipid metabolism.

关键词： Metabolic syndrome Whole egg Yolk free egg substitute Serum Lipidomics

进水方式对OAO蔬菜潜流湿地净化效果的影响

在线全文

学校读者我要写书评

暂无评论

中国给水排水 2024年第1期40卷 104-109页

作者：巢波张皓驰陈太飞李先宁东南大学能源与环境学院江苏南京210096

为提高好氧/厌氧/好氧(OAO)蔬菜潜流湿地对总氮的去除效果,同时维持其对有机物的高去除率,在野外条件下采用人工模拟的当地村落无序排放污水,分析不同进水方式(首端进水、三点进水和两点进水)对湿地去除污染物效果的影响。结果表明,相... 详细信息

为提高好氧/厌氧/好氧(OAO)蔬菜潜流湿地对总氮的去除效果,同时维持其对有机物的高去除率,在野外条件下采用人工模拟的当地村落无序排放污水,分析不同进水方式(首端进水、三点进水和两点进水)对湿地去除污染物效果的影响。结果表明,相较于首端进水,三点进水方式下湿地对总氮的去除效果有所提高,但对COD和总磷去除率的提升效果不显著,最佳脱氮进水流量比为1∶2∶1,脱氮效果提升13.56%,氨氮、硝态氮和总氮去除率分别达到75.11%、95.07%和79.86%,相应出水平均浓度分别为0.65、0.53和1.32 mg/L。采用两点进水方式时,湿地脱氮除磷效率及COD去除率均高于三点进水和首端进水,最佳脱氮进水流量比为1∶3,氨氮、硝态氮和总氮去除率分别为82.10%、97.71%和85.59%,相应出水平均浓度分别为0.92、0.09和0.93 mg/L。

关键词： OAO蔬菜潜流湿地村落无序排放污水脱氮三点进水两点进水

在线全文

学校读者我要写书评

暂无评论

新能源汽车充电桩空间布局优化研究

河北建筑工程学院学报 2024年第2期42卷 174-179页

作者：太飞田雨婷刘宁李飞张静静王磊太乐河北建筑工程学院河北张家口075000 国网冀北电力有限公司张家口供电公司河北张家口075000

全球能源日益短缺背景下,石油、天然气等不可再生资源的持续消耗,促使新能源汽车领域快速发展,并逐渐成为我国重点扶持的新兴产业。充电桩作为新能源汽车重要基础设施,其便捷性、合理性以及多元性是推动新能源产业持续发展的关键所在。... 详细信息

全球能源日益短缺背景下,石油、天然气等不可再生资源的持续消耗,促使新能源汽车领域快速发展,并逐渐成为我国重点扶持的新兴产业。充电桩作为新能源汽车重要基础设施,其便捷性、合理性以及多元性是推动新能源产业持续发展的关键所在。采用随机问卷调查法,有效问卷300份,通过调查分析发现,调查地区充电桩存在车主充电难、充电桩分布不均、充电车位占用率较高等问题,提出整合资源、合理布局充电设施等策略,旨在优化充电桩空间布局的同时,促进新能源领域快速发展。

关键词：新能源汽车充电桩持续发展整合资源空间优化布局

Anomalously Large Deformation in Some Medium and Heavy Nuclei

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2005年第4X期44卷 687-696页

作者： CHEN Ding-Han REN Zhong-Zhou tai fei Department of Physics Nanjing University Nanjing 210008 China Center of Theoretical Nuclear Physics National Laboratory of Heavy-Ion Accelerator at Lanzhou Lanzhou 730000China

We investigate the properties of the Ce isotopes with neutron number N =60 - 90 and the properties of the heavy nuclei near 242Am within the framework of deformed relativistic mean-field （RMF） theory. A systematic comparison between theoretical results and experimental data is made. The calculated binding energies, two-neutron separation energies, and two-proton separation energies are in good agreement with experimental ones. The variation trend of experimental quadrupole deformation parameters on the Ce isotopes can be approximately reproduced by the RMF model. It is found that there exists an abnormally large deformation in the ground state of proton-rich Ce isotopes. This phenomenon can be the general behavior of proton-rich nuclei on the neighboring isotopic chains such as Nd and Sin isotopes. For the heavy nuclei near ^242 Am the properties of the ground state and superdeformed isomeric state can be approximately reproduced by the RMF model. The mechanism of the appearance of anomalously large deformation or superdeformation is analyzed and its influence on nuclear properties is discussed. Parther experiments to study the anomalously large deformation in some proton-rich nuclei are suggested.

关键词： superdeformation proton-rich Ce nuclei isomeric state of ^242Am constraint relativistic meanfield calculation

InGaN metal-insulator-semiconductor photodetector using Al2O3 as the insulator

在线全文

学校读者我要写书评

暂无评论

Science China Technological Sciences 2013年第3期56卷 633-636页

作者： ZHANG KaiXiao MA AiBin JIANG JingHua XU Yan tai fei GONG JiangFeng ZOU Hua ZHU WeiHua College of Science Hohai University College of Mechanics & Materials Hohai University

In this paper,an InGaN metal-insulator-semiconductor(MIS) photodetector with an ultra-thin Al2O3 insulation layer deposited by atomic layer deposition(ALD) was studied.A high photoelectric responsivity of 0.25 A/W and a spectral responsivity rejection ratio of about three orders of magnitude at 1 V reverse bias were achieved for this MIS *** dominant carrier transport mechanism in the InGaN MIS photodetectors is submitted to the space charge limited current(SCLC) mechanism at high field and exhibits an Ohmic-like conduction at low electric *** results indicate that the ultra-thin Al2O3 film deposited by the ALD technique can act as an excellent insulation dielectric for the InGaN photodetectors.

关键词： InGaN photodetector metal-insulator-semiconductor current transport

Dynamic properties of micro-NPR material and its controlling effect on surrounding rock mass with impact disturbances

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Underground Space 2024年第2期15卷 331-352页

作者： Manchao He Jie Hu tai Cheng fei Deng Zhigang Tao Hongru Li Di Peng Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining&TechnologyBeijing 100083China Luohe Vocational Technology College Henan 462002China

A novel meta steel with negative Poisson’s ratio effect(termed as micro-NPR steel)is developed for rock support in deep underground *** possesses high strength,high ductility,and high energy absorption *** this paper,static tension and modified dynamic drop hammer tests are performed on this novel material to investigate its mechanical properties *** based on this material,a new generation of micro-NPR anchor cable is developed and applied in field tests subjected to blasting dynamic *** results of laboratory tests reveal that the ultimate elongation of micro-NPR steel under dynamic impacts is more than 30%and it is over 1.5 times that of Q235;the plastic and total energy absorption of micro-NPR are both significantly higher than that of *** test indicates the fine controlling effect of micro-NPR anchor cable on surrounding rock mass under dynamic *** force confirms that micro-NPR cables can distribute and absorb the dynamic energy uniformly around the supported rock when subjected to dynamic disturbance,avoiding local failure induced by excessive stress *** excavation compensation principle and energy-absorbing characteristics are used to explain the support ***,micro-NPR material and anchor cable can control and prevent dynamic disasters in deep underground engineering effectively.

关键词： Micro-NPR steel Energy-absorbing Drop hammer test Anchor cable Field test

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

纳米三坐标测量机接触式测头触发控制

光学精密工程 2010年第12期18卷 2603-2609页

作者：程方费业泰合肥工业大学仪器科学与光电工程学院安徽合肥230009

为高灵敏度纳米三坐标测量机(nano-CMM)接触式测头提出了一种高精度高效率的触发控制策略。该策略使用了一种自行研制的4-DVD接触式测头,工件接触测头产生的微小变形会导致测头产生灵敏度极高的触发信号。系统使用超声波马达整合不同驱... 详细信息

为高灵敏度纳米三坐标测量机(nano-CMM)接触式测头提出了一种高精度高效率的触发控制策略。该策略使用了一种自行研制的4-DVD接触式测头,工件接触测头产生的微小变形会导致测头产生灵敏度极高的触发信号。系统使用超声波马达整合不同驱动模式,实现了高速逼近和低速触发的有效结合。触发过程使用了二次触发策略,即第一次触发获得接触位置的范围,第二次触发用极低的速度,详细记录触发点附近的触发信号,并通过线性拟合的方式求得信号曲线转折点,即为触发位置。该方法解决了驱动分辨率和行程大小的矛盾。实验结果显示:该方法可以有效地避免测头系统的塑性形变,触发位置的重复性可在10 nm以内。结果表明,本文提出的nano-CMM接触式测头触发控制策略在保证精度和稳定性的前提下,表现出了良好的控制效率。

关键词：纳米三坐标测量机接触式测头超声波马达二次触发

Personalized assessment and training of neurosurgical skills in virtual reality:An interpretable machine learning approach

在线全文

学校读者我要写书评

暂无评论

虚拟现实与智能硬件（中英文） 2024年第1期6卷 17-29页

作者： fei LI Zhibao QIN Kai QIAN Shaojun LIANG Chengli LI Yonghang tai Yunnan Key Laboratory of Opto-electronic Information Technology Yunnan Normal UniversityKunming 650500China Department of Thoracic Surgery Institute of The First People’s Hospital of Yunnan ProvinceKunming 650500China Faculty of Life and Biotechnology Kunming University of Science and TechnologyKunming 650031China

Background Virtual reality technology has been widely used in surgical simulators,providing new opportunities for assessing and training surgical *** learning algorithms are commonly used to analyze and evaluate the performance of ***,their interpretability limits the personalization of the training for individual *** Seventy-nine participants were recruited and divided into three groups based on their skill level in intracranial tumor *** on the use of surgical tools were collected using a surgical *** selection was performed using the Minimum Redundancy Maximum Relevance and SVM-RFE algorithms to obtain the final metrics for training the machine learning *** machine learning algorithms were trained to predict the skill level,and the support vector machine performed the best,with an accuracy of 92.41%and Area Under Curve value of *** machine learning model was interpreted using Shapley values to identify the important factors contributing to the skill level of each *** This study demonstrates the effectiveness of machine learning in differentiating the evaluation and training of virtual reality neurosurgical *** use of Shapley values enables targeted training by identifying deficiencies in individual *** This study provides insights into the use of machine learning for personalized training in virtual reality *** interpretability of the machine learning models enables the development of individualized training *** addition,this study highlighted the potential of explanatory models in training external skills.

关键词： Machine learning Neurosurgery Shapley values Virtual reality Human-robot interaction

在线全文

学校读者我要写书评

暂无评论

基于受热和受力状态的孔型零件变形研究

哈尔滨工业大学学报 2006年第9期38卷 1586-1589页

作者：罗哉费业泰合肥工业大学仪器仪表学院

采用热力学方法推导出稳态非均匀温度场中孔型零件在受力情况下的热变形公式.实验结果表明,孔型零件的受热变形量不仅与其几何尺寸、材料特性有关,还与所处的温度场和所受外力有关,实验结果也证实了所推导的公式是正确的.

关键词：稳态非均匀温度场稳态均匀温度场热应力热变形

光网络中基于流量均衡的SRLG分离路由算法

在线全文

学校读者我要写书评

暂无评论

光电子．激光 2008年第12期19卷 1631-1635页

作者：赵太飞柯熙政西安理工大学自动化与信息工程学院西安710048

基于共享风险链路组(SRLG,shared risk link group)和流量均衡的概念,研究了光网络抗毁设计中基于流量均衡的SRLG尽量分离路由问题,利用网络流量的实际分布来评价链路和SRLG重要性,提出基于流量均衡的SRLG分离算法TBDR。通过计算机仿真... 详细信息

基于共享风险链路组(SRLG,shared risk link group)和流量均衡的概念,研究了光网络抗毁设计中基于流量均衡的SRLG尽量分离路由问题,利用网络流量的实际分布来评价链路和SRLG重要性,提出基于流量均衡的SRLG分离算法TBDR。通过计算机仿真表明,TBDR算法性能优于保护路优先算法,该算法能有效降低网络阻塞率,提高网络资源利用率和网络抗毁能力,达到流量均衡的目标。

关键词：光网络共享风险链路组(SRLG) 流量均衡分离式路由