检索结果-南通市图书馆

Clinical observation of white eye distribution in patients with hyperlipidemia: an artificial intelligence digital visual examination technique

引用

Journal of Traditional Chinese Medicine 2025年

作者： SONG Tianli li Haixia liu li'an Department of Cardiology， the Guang'anmen Hospital， China Academy of Chinese Medical Sciences National College， Beijing University of Chinese Medicine

Objective: To explore the clinical observation of white eye distribution characteristics of hyperlipidemic patients based on artificial intelligence digital eye diagnosis technology. Methods: One hundred and fifty subjects were examined in the outpatient and inpatient departments of Guang'anmen Hospital of the China Academy of Traditional Chinese Medicine from 01 February 2022 to 01 February 2023， including 80 cases in the hyperlipidemic patient (HLP) group and 70 cases in the normal lipid level patient (NC) group. The two groups were collected and extracted by the artificial intelligence visual diagnostic instrument and analyzed by the MyEyeD-10 white eye shadowless imaging health intelligence analysis system. Finally， SPSS 26.0 (Version X; IBM Corp.， Armonk， NY， USA) was used for statistical processing. Results: Significant differences were noted in the scores of "spot" and "foggy" features between the two groups. Between groups， the "spot" feature score of the white eye morphology in the HLP group (11.07 ± 3.22) was higher than that in the NC group (7.50 ± 4.11) (P liver) eye-contact region scores between the two groups， and the "B"， "O" (spleen) and "M" (liver) eye-contact region scores were significantly different. The scores of the white eye channel region in the HLP group were significantly higher than those in the control group， with the "A"， "B"， and "O" regions (P < 0.01)， "M" region (P < 0.01)， "A"， "B"， "O"， and "M" region (P < 0.01). "M" zone (P < 0.05). The scores of "dull red" and "yellow" features were significantly different， and the scores of "dull red" and "yellow" colors of the white eye choroid in the HLP group were significantly higher than those in the HLP g

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

内置应变传感器对沥青混合料力学性能的影响

引用

工程科学学报 2025年第1期47卷 179-194页

作者：柳力李理刘朝晖傅顺发李文博潘厚璇长沙理工大学交通运输工程学院长沙410114 深圳高速工程检测有限公司深圳518000

道路本体结构的智能智慧是道路工程发展的重要方向,内置应变传感器是实现路面结构应变感知的重要手段,为探究内置应变传感器对沥青混合料力学性能影响,运用离散元法,构建了内置应变传感器的沥青混合料细观模型,研究了应变传感器埋设深... 详细信息

道路本体结构的智能智慧是道路工程发展的重要方向,内置应变传感器是实现路面结构应变感知的重要手段,为探究内置应变传感器对沥青混合料力学性能影响,运用离散元法,构建了内置应变传感器的沥青混合料细观模型,研究了应变传感器埋设深度和数量对沥青混合料力学性能影响,分析了沥青混合料材料公称最大粒径、级配和沥青砂浆黏结强度等对内置应变传感器工作性能影响.结果表明:随着传感器埋设深度的增加,梁试件底部三个监测点位处水平拉应力分别增加56.9%、43.5%、43.8%,越接近梁试件底部,其内部水平应力场分布更均匀;与单传感器相比,埋设双传感器的梁试件裂隙增加速度更快,在挠度为0.8 mm时裂隙数便达到267个,单传感器仅为93个;沥青混合料公称最大粒径越大,力链数越少,AC-16、AC-20的平均力链比较AC-13分别降低4.9%、11.4%;沥青混合料级配越粗,荷载传递路径越少,接触力系数量减少77.7%,接触力分布均匀性降低,最大接触力增加74.6%,导致传感器工作稳定性越差;沥青砂浆黏结强度增加,最大接触力下降11%,传感器工作稳定性越好.研究结果可为提升内置应变传感器的沥青混合料耐久性和工作稳定性提供参考.

关键词：道路工程沥青路面力学响应应变传感器离散元方法服役性能

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

新型列控系统列车行车许可CTC显示方案研究

引用

铁道通信信号 2025年第1期61卷 24-30页

作者：刘黎李军兴中国铁道科学研究院集团有限公司通信信号研究所北京100081 中国铁路北京局集团有限公司调度所北京100860

调度集中(CTC)系统中的列车运行状态信息实时显示功能可帮助列车调度人员高效开展行车指挥。新型列控系统下列车采取移动闭塞方式运行,既有CTC系统中的列车行车许可显示无法准确反映列车运行情况,为此需要对列车行车许可在CTC系统中的... 详细信息

调度集中(CTC)系统中的列车运行状态信息实时显示功能可帮助列车调度人员高效开展行车指挥。新型列控系统下列车采取移动闭塞方式运行,既有CTC系统中的列车行车许可显示无法准确反映列车运行情况,为此需要对列车行车许可在CTC系统中的显示与更新方案进行研究。通过提取列车精准位置信息,分别研究列车位于站内和站间两种情况下行车许可显示范围计算方法,并根据行车许可显示范围计算显示光带的起止点,从而实现列车位置和行车许可范围在CTC终端界面的实时显示及更新。该方案在CTC仿真测试平台及现场试验线路上进行了验证,满足新型列控系统下调度集中系统中列车运行状态信息显示的规范要求,能够准确及时地反映列车运行状态,有利于提升列车调度指挥的准确性和效率。

关键词：新型列控系统调度集中移动闭塞信息封装行车许可虚拟区段显示光带

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Differential Evolution Flower Pollination Algorithm with Dynamic Switch Probability

引用

Chinese Journal of Electronics 2019年第4期28卷 737-747页

作者： liu Jingsen liu li li Yu Institute of Intelligent Network system Henan University College of Software Henan University Institute of Management Science and Engineering Henan University

For the shortcomings of the basic flower pollination algorithm, this paper proposes a differential evolution flower pollination algorithm with dynamic switch probability based on the Weibull *** new algorithm improved the convergence rate and precision. The switch probability is improved by Weibull distribution function combined with the number of iterations. It can balance the relationship between the global pollination and the local pollination to improve the overall optimization performance of the *** mutation operator is merged into the global pollination process to increase diversity of the population,enhance the ability of the algorithm’s global search and avoid premature convergence. In the process of local pollination, directed mutation and crossover operation of the differential evolution are incorporated, it makes the individual flower position update with the memory function, which can choose the direction of variation reasonably. The use of cross-operation can avoid new solutions crossing the boundary. Convergence rate is improved and the algorithm can approach the global optimal solution continuously. Theoretical analysis proved the convergence and time complexity of the improved algorithm. The simulation results based on the function optimization problem show that the improved algorithm has better performance of optimization, faster convergence speed and higher convergence accuracy.

关键词： Flower pollination algorithm Dynamic switch probability Random mutation operator Differential evolution Optimization accuracy Convergence rate

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Effects of N-alkylation on anticorrosion performance of doped polyaniline/epoxy coating

引用

Journal of Materials Science & Technology 2020年第4期39卷 48-55页

作者： Suyun liu li liu Ying li Fuhui Wang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang 110819China

N-alkylation of sulfosalicylic acid-doped polyaniline(PANI-SSA)was used to promote the anticorrosion performance of PANI-SSA/epoxy coating for 5083 Al ***-SSA was modified with C5H11Br and C12H25Br in polar solvents IPA(isopropanol)and DMF(dimethylformamide),and then characterized by FTIR,XPS and sedimentation *** showed that alkanes were successfully linked onto the PANI-SSA *** compatibility between N-alkylated PANI-SSA and epoxy/xylene solution was *** results proved a better dispersion performance of N-alkylated PANI-SSA in epoxy coatings,with less holes and *** protection of the epoxy coatings incorporating PANI-SSA and N-alkylated PANI-SSA on 5083 Al alloy was studied by EIS and adhesion measurements in 3.5%NaCl *** turned out that the epoxy coating including C12H25Br-modified PANI-SSA in DMF has yielded the highest values of impedance modulus and best protective properties.

关键词： Polyaniline Coating Modification Al alloy Anticorrosive property

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Insight into deformation allocation in the multi-pass roll forming of a double-walled brazed tube

引用

Advances in Manufacturing 2023年第4期11卷 567-586页

作者： Meng-Meng liu Yu-li liu Heng li State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an710072People’s Republic of China

Deformation allocation is an important factor that affects 720°curling forming from copper-coated steel strips to double-walled brazed tubes(DWBTs).In this study,four schemes of deformation allocation,considering different weights of the total feed distance,are proposed,and a 3D finite element(FE)model of the multi-pass roll forming process for DWBT is developed and verified to investigate the cross-sectional evolution and deformation *** results show the following.(i)In the 720°curling forming process from the steel strip into double-walled tubes,the curvature of the formed circular arc initially increases and then remains stable with roll forming,and the inner and outer tubes of the DWBT are formed in the third and fifth forming *** forming can eliminate the gap between the double walls and improve the overall roundness.(ii)For different deformation allocations,the cross-sectional profiles of the roll-formed parts exhibit a discrepancy,and the deformation amount varies with the roll-forming *** deformation amount in Scheme three is the maximum,and the cross-sectional profile deviates significantly from the ideal shape and fails to form a DWBT,which indicates that the deformation allocation is unsuitable.(iii)The roundness of the outer tube is better than that of the inner ***,the roundness of the inner tube is the key to restricting the forming accuracy of the *** with Schemes one and two,Scheme four with a linear allocation of the total feed distance exhibits the best roundness,and the deformation allocation is reasonable;i.e.,when the contact points between the rollers and steel strip are in a straight line,the roundness of the DWBT is in good agreement with the ideal condition.

关键词： Double-walled brazed tube(DWBT) Multi-pass roll forming Deformation allocation Cross-sectional profile Roundness

来源：

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

Carbon-supported CeNCl as an efficient catalyst for CO_(2)cycloaddition

引用

Nano Research 2025年第1期18卷 157-163页

作者： li liu lingling Zhang Xiang Chu Baokang Geng Huilin Wang Zongxiang li Xiao Wang Shuyan Song Hongjie Zhang School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Sinocare Incorporation Changsha 410221China Department of Chemistry Tsinghua UniversityBeijing 100084China

The cycloaddition reaction of CO_(2)with epoxide not only effectively reduces the concentration of CO_(2)in the atmosphere,but also has excellent industrial application value and up to 100%atom utilization,but there are difficulties in separation and recovery of traditional homogeneous catalysts,harsh reaction conditions of traditional heterogeneous catalysts,and activation of CO_(2)*** this paper,an easily synthesized heterogeneous catalyst CeNCl/C was used to catalyze the cycloaddition reaction of CO_(2)with styrene oxide,with a high yield of 92.7%,a high selectivity of 96.7%,a turnover numbers(TON)value of 349,and a good stability demonstrated in six cycle tests(equivalent to 216 h of testing).Through comprehensive studies,it was shown that CeNCl/C contains Lewis acid-base centers as active centers,which can effectively reduce the energy barrier required for ring opening of the reaction substrate,enhance the adsorption and activation of CO_(2),and promote the formation of intermediates,which led to the acquisition of excellent catalytic activity.

关键词： CO_(2)cycloaddition heterogeneous catalysis CeNCl Lewis acid/base

来源：

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

The role of hydrostatic pressure on the metal corrosion in simulated deep-sea environments—a review

引用

Journal of Materials Science & Technology 2022年第17期112卷 230-238页

作者： Rui liu li liu Fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityNO.3-11 Wenhua RoadShenyang 110819China

This paper reviewed the corrosion behavior of metals in simulated deep-water environments and briefly discussed the effect of hydrostatic pressure on the different corrosion types for the active and the passive alloys.A consensus on the corrosion mechanism is that hydrostatic pressure accelerates the dissolution kinetics,changes the chemical compositions of the product layer or passive films,and promotes the adsorption of Cl^(-)on the metal *** addition,a newly-developed mechanism that hydrostatic pressure facilitates the dissolution process by thinning the electric double layer was reviewed,the synergistic effect of hydrostatic pressure and tensile stress on the stress corrosion cracking was discussed,and the modified coating with chemical bonding interface to prolong the service life in this environment was introduced.

关键词： Corrosion Hydrostatic pressure Deep-sea environments

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Electromagnetic interference modeling and elimination for a solar/hydrogen hybrid powered small-scale UAV

引用

Chinese Journal of Aeronautics 2023年第10期36卷 293-308页

作者： Jiahao GE li liu School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

The trajectory related and Direct Current(DC)Electromagnetic Interference(EMI)of lithium battery,fuel cell and photovoltaic modules has a great influence on the small-scale Unmanned Aerial Vehicle(UAV)airborne magnetometer and is hard to be shielded,calibrated or ***,the mechanisms underlying the DC EMI have been rarely investigated *** cope with this problem,this paper systematically studies the EMI models,and proposes an online 3-layer EMI reduction ***,EMI coupled with UAV motion model and hybrid power system is ***,the mechanism EMI models of hybrid power system are established and verified based on the proposed concept“equivalent current”.Third,an online 3-layer EMI reduction scheme is proposed,including battery layer,trajectory planning layer and energy management *** the first main layer,EMI self-cancellation is realized by rotating battery inclinations and symmetrical *** response to errors,the trajectory planning layer reduces the EMI intensity by optimizing an optimal trajectory,while the energy management layer prioritizes power allocation to power sources that can produce small and stable *** results of climb,level flight and descent illustrate the efficaciousness and applicability of the proposed online 3-layer EMI reduction scheme.

关键词： Electromagnetic interference EMI reduction Energy management Hybrid powered UAV Mechanism modeling Trajectory planning

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Weight Distribution of a Class of p-Ary Cyclic Codes with Few Weights

引用

Chinese Journal of Electronics 2020年第4期29卷 717-723页

作者： liu li XIE Xianhong School of Mathematics Hefei University of Technology Key Laboratory of Electromagnetic Space Information CAS University of Science and Technology of China

In this paper, we investigate a class of p-ary cyclic codes whose duals have two zeros for some special cases and calculate their weight distributions *** results show that the codes have at most five nonzero ***, the... 详细信息

关键词： Cyclic codes Weight distributions Fourier expansion Gauss sums Griesmer bound

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：