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混沌半导体激光器及其应用研究进展(特邀)

激光与光电子学进展 2024年第1期61卷 256-269页

作者：乔丽君王小娜郝玉凯张明江太原理工大学物理学院山西太原030024 太原理工大学新型传感器与智能控制教育部重点实验室山西太原030024 太原理工大学电子信息与光学工程学院山西太原030024

混沌激光具有宽频谱、类噪声、低相干等特性,在通信、雷达、传感等领域有广泛的应用。本文介绍了混沌半导体激光器的3种主要工作机制,分别为光反馈、光注入和光电反馈;重点研究典型混沌半导体激光器的频谱带宽、时延特征,以及复杂度等... 详细信息

混沌激光具有宽频谱、类噪声、低相干等特性,在通信、雷达、传感等领域有广泛的应用。本文介绍了混沌半导体激光器的3种主要工作机制,分别为光反馈、光注入和光电反馈;重点研究典型混沌半导体激光器的频谱带宽、时延特征,以及复杂度等性能及其研究进展;进一步论述光子集成混沌半导体激光器的发展趋势;最后介绍混沌半导体激光器在保密光通信、随机数生成器、激光雷达、分布式光纤传感、混沌光时域反射计等领域的应用现状。本文可为高带宽、低时延混沌半导体激光器的发展和应用前景提供借鉴。

关键词：混沌激光半导体激光器光子集成带宽提升时延特征

Deformation Compensation of Ram Components of Super-heavy-duty CNC Floor Type Boring and Milling Machine

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Chinese Journal of Aeronautics 2012年第2期25卷 269-275页

作者： WU Fenghe qiao lijun XU Yaoling Department of Mechanical Engineering Yanshan University Qinhuangdao 066004 China Department of Architectural Engineering and Mechanics Yanshan University Qinhuangdao 066004 China

Ram is a very important component of super-heavy-duty computer numerical control （CNC） floor type boring-milling machine, and deformation of ram is a significant source causing errors in machining process. To compensate the deformation error of super-heavy-duty CNC floor type boring-milling machine, based on force analysis theory, the law and compensation measures of deformation of ram are researched. Based on the principle of torque （force） balance of the ram components, the formulas of compensation forces and compensation torques are derived, the relations between compensation forces （compensation torques） and the stroke distance of the ram are given. According to theoretical analysis results and the structural characteristics of super-heavy-duty CNC floor type boring and milling machine of TK6932, rods compensation, hydrostatic pressure compensation and wire rope compensation measures are taken to compensate the deformation error of ram. The experiments and computer simulation results show that the straightness of the ram at its overhanging end meets the national machinery industry standards.

关键词： boring and milling machine deformation error compensation computer simulation ram

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“神”的中医内涵及醒神理论应用探析

新中医 2024年第16期56卷 180-184页

作者：张超乔利军蔡业峰广州中医药大学第二临床医学院广东广州510120 广州中医药大学第二附属医院/广东省中医院广东广州510120

在中医学中,“神”具有多重含义和功能。深入探讨中医学中“神”的概念,分析其在《黄帝内经》中的演变与发展。详细讨论了“神”在生命生成、生理机制、病理机制及疾病诊疗和预后中的作用。探讨了醒神在中医临床中的应用及其在现代医学... 详细信息

在中医学中,“神”具有多重含义和功能。深入探讨中医学中“神”的概念,分析其在《黄帝内经》中的演变与发展。详细讨论了“神”在生命生成、生理机制、病理机制及疾病诊疗和预后中的作用。探讨了醒神在中医临床中的应用及其在现代医学研究中的地位。对于“神”的理解和醒神的应用是中医治疗的关键部分,强调了将中医理论与现代医学研究相结合的重要性。

关键词：神醒神《黄帝内经》临床应用

基于FPGA的拉曼分布式光纤测温系统数据采集处理模块设计

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激光与光电子学进展 2024年第17期16卷 117-125页

作者：陈洋乔丽君曹康怡范卜文郭浩森秦嘉辰李健张明江太原理工大学新型传感器与智能控制教育部重点实验室太原理工大学电子信息与光学工程学院太原理工大学物理学院

传统拉曼分布式光纤测温系统中，系统的空间分辨率、温度精度、传感距离和信噪比等重要指标受采集处理模块的采样速率、信号量化位数、板载内存和数据处理能力性能制约，导致无法发挥其全部性能。本文设计了一种基于现场可编程门阵列（F... 详细信息

传统拉曼分布式光纤测温系统中，系统的空间分辨率、温度精度、传感距离和信噪比等重要指标受采集处理模块的采样速率、信号量化位数、板载内存和数据处理能力性能制约，导致无法发挥其全部性能。本文设计了一种基于现场可编程门阵列（FPGA）的长距离拉曼分布式光纤测温系统数据采集处理模块，采用AXI4总线分时突发读写DDR3存储器技术实现超长数据实时累加平均处理，通过用户数据报协议（UDP）实现FPGA与上位机之间的数据传输，并且使用上位机对接收的数据进行温度解调和显示。实验结果表明，所提出的数据采集处理模块能够支持89.6 km的光纤信号采集，在10万次累加平均处理后，测温信号信噪比达到43.65 dB，测温精度稳定在±0.21℃。该数据采集处理模块能够进一步推动拉曼分布式光纤测温系统的应用与发展。

关键词：拉曼分布式光纤测温系统现场可编程门阵列 DDR3 AXI4 累加平均处理

SSR markers development and their application in genetic diversity evaluation of garlic(Allium sativum)germplasm

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Plant Diversity 2022年第5期44卷 481-491页

作者： Xiaxia Li lijun qiao Birong Chen Yujie Zheng Chengchen Zhi Siyu Zhang Yupeng Pan Zhihui Cheng College of Horticulture Northwest A&F UniversityYangling712100Shaanxi ProvinceChina

Garlic(Allium sativum),an asexually propagated vegetable and medicinal crop,has abundant genetic *** diversity evaluation based on molecular markers has apparent advantages since their genomic abundance,environment insensitivity,and non-tissue specific ***,the limited number of available DNA markers,especially SSR markers,are insufficient to conduct related genetic diversity assessment studies in *** this study,4372 EST-SSR markers were newly developed,and 12 polymorphic markers together with other 17 garlic SSR markers were used to assess the genetic diversity and population structure of 127 garlic *** averaged polymorphism information content(PIC)of these 29 SSR markers was 0.36,ranging from 0.22 to ***-nine polymorphic loci were detected among these accessions,with an average of 3.48 polymorphic loci per *** the clustering analyses based on either the genotype data of SSR markers or the phenotypic data of morphological traits obtained genetic distance divided the 127 garlic accessions into three ***,the Mantel test showed that genetic distance had no significant correlations with geographic distance,and weak correlations were found between genetic distance and the phenotypic *** analysis showed that the main genetic variation of this garlic germplasm collection existed in the within-population or *** of this study will be of great value for the genetic/breeding studies in garlic and enhance the utilization of these garlic germplasms.

关键词： Garlic SSR markers Genetic diversity Population structure

Surface Tension Calculation of Undercooled Alloys

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Rare Metals 2001年第1期20卷 58-61页

作者： Zhiyu qiao, lijun Yan, Zhanmin Cao, Guirong Liu (Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China) Univ Sci & Technol Beijing Dept Phys Chem Beijing 100083 Peoples R China

Based on the Butler equation and extrapolated thermodynamic data of undercooled alloys from those of liquid stable alloys, a method for surface tension calculation of undercooled alloys is proposed. The surface tensions of liquid stable and undercooled Ni-Cu (x(Ni)=0.42) and Ni-Fe (x(Ni)=0.3 and 0.7) alloys are calculated using STCBE (Surface Tension Calculation based on Butler Equation) program. The agreement between calculated values and experimental data is good enough, and the temperature dependence of the surface tension can be reasonable down to 150-200 K under the liquid temperature of the alloys.

关键词： undercooled alloy surface tension Butler equation

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态度理论视域下课程思政内化教育机制与策略

职业技术 2024年第2期23卷 16-22页

作者：胡迎春陈光宇和震乔丽君陈荣仕广西师范大学职业技术师范学院广西桂林541001 北京师范大学国家职业教育研究院北京100082

将立德树人教育理念融入专业课程的课程思政实施过程,是对受教育者内化教育的过程,是让他们感同身受从而实现潜移默化教育效果的过程。通过介绍态度理论在课程思政内化教育过程中的地位与作用,分析课程思政内化与受教育者态度转变二者... 详细信息

将立德树人教育理念融入专业课程的课程思政实施过程,是对受教育者内化教育的过程,是让他们感同身受从而实现潜移默化教育效果的过程。通过介绍态度理论在课程思政内化教育过程中的地位与作用,分析课程思政内化与受教育者态度转变二者之间的相关性;根据社会心理学中霍夫兰德和韦斯的说服和态度改变模型,从“说服—态度改变模型”的影响因素(即说服者、说服内容、说服方式、信息接受者)入手,将它应用到课程思政内化场域;探究态度理论视域下课程思政内化机制与影响因素,分析对受教育者开展课程思政内化教育的过程,从而提出课程思政内化教育的实施策略。

关键词：课程思政态度改变内化策略

Slope-assisted Raman distributed optical fiber sensing

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Photonics Research 2022年第1期10卷 205-213页

作者： JIAN LI XINXIN ZHOU YANG XU lijun qiao JIANZHONG ZHANG MINGJIANG ZHANG College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Advanced Transducers and Intelligent Control Systems(Ministry of Education and Shanxi Province) Taiyuan University of TechnologyTaiyuan 030024China

Raman distributed optical fiber sensing is required to achieve accurate temperature measurements in a micro-scale *** this study,we first analyze and demonstrate the pulse transmission feature in the temperature variation area and the superposition characteristics of Raman optical time-domain reflectometry(OTDR)signals by numerical *** equations of superimposed Raman anti-Stokes scattered signals at different stages are presented,providing a theoretical basis for the positioning and physical quantity demodulation of whole optical fiber systems based on the OTDR ***,we propose and experimentally demonstrate a slope-assisted sensing principle and scheme in a Raman distributed optical fiber *** the best our knowledge,this is the first experimental demonstration of Raman distributed optical fiber sensing in a centimeter-level spatial measurement region.

关键词： fiber optical OTDR

Calcium-fortified fresh milk ameliorates postmenopausal osteoporosis via regulation of bone metabolism and gut microbiota in ovariectomized rats

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Food Science and Human Wellness 2024年第3期13卷 1258-1270页

作者： Qishan Wang Bin Liu Xianping Li Junying Zhao Zongshen Zhang Weicang qiao Xinyue Wei lijun Chen School of Bioengineering Dalian Polytechnic UniversityDalian 116034China National Engineering Research Center of Dairy Health for Maternal and Child Beijing Sanyuan Foods Co.Ltd.Beijing 100163China Beijing Engineering Research Center of Dairy Beijing Sanyuan Foods Co.Ltd.Beijing 100163China

The aging of the global population has made postmenopausal osteoporosis prevention essential;however,pharmacological treatments are ***,we evaluate the effect of calcium-fortified fresh milk(FM)in ameliorating postmenopausal osteoporosis in a rat model established using bilateral *** 3 months of FM(containing vitamin D,and casein phosphopeptides,1000 mg Ca/100 g)or control milk(110 mg Ca/100 g milk)supplementation,bone changes were assessed using dual-energy X-ray absorptiometry,microcomputed tomography,and bone biomechanical *** results revealed that FM can regulate bone metabolism and gut microbiota composition,which act on bone metabolism through pathways associated with steroid hormone biosynthesis,relaxin signaling,serotonergic synapse,and unsaturated fatty acid ***,FM administration significantly increased bone mineral content and density in the lumbar spine and femur,as well as femoral compressive strength,while improving femoral trabecular bone parameters and ***,we found that the effects may be due to increased levels of estrogen,bone formation marker osteocalcin,and procollagen typeⅠN-propeptide,and decreased expression of the bone resorption marker C-telopiptide and tartrate-resistant acid phosphatase ***,the findings suggest that FM is a potential alternative therapeutic option for ameliorating postmenopausal osteoporosis.

关键词： Dairy products Calcium Vitamin D Bone turnover markers Gut microbiota Postmenopausal osteoporosis