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基于惯性测量的机载数字侧滑仪建模方法

中国惯性技术学报 2023年第4期31卷 413-417页

作者：张懿刘小溪梁旭雒俊李骏中国航空工业集团公司西安飞行自动控制研究所西安710076 陆装驻西安地区航空军代室西安710076

机载侧滑仪是监测飞机在空中侧向受力的重要仪表。为解决机械侧滑仪精度无法量化的问题,提出了一种基于惯性测量的机载侧滑仪数字化建模方法,实现了飞行侧滑实时定量数字化显示。首先,从运动学出发导出了侧滑仪的运动理论表达式;进而,... 详细信息

机载侧滑仪是监测飞机在空中侧向受力的重要仪表。为解决机械侧滑仪精度无法量化的问题,提出了一种基于惯性测量的机载侧滑仪数字化建模方法,实现了飞行侧滑实时定量数字化显示。首先,从运动学出发导出了侧滑仪的运动理论表达式;进而,以惯性测量信号为输入,基于侧滑仪的动力学分析建立了侧滑仪的力学模型;最后,考虑工程实际对侧滑仪模型进行了简化,仅保留天向比力和侧向比力,并进一步结合实验确定了数字侧滑仪模型的关键参数摆长为10米。由于机械侧滑仪作为目视仪表难以量化,基于图像识别设计了验证实验,对机械侧滑仪和数字侧滑仪的输出进行定量对比,结果显示Pearson相关系数大于0.98。基于所提建模方法设计的数字侧滑仪可以及时准确地监测飞机侧向受力,该数字侧滑仪已在某型飞机上得到应用验证。

关键词：侧滑仪动力学建模飞行仪表惯性导航系统模态分析图像识别

AN ANALYTIC SOLUTION FOR INTERLAMINAR STRESSES IN A FIBERREINFORCED DOUBLE-LAYER CYLINDRICAL SHELL

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Acta Mechanica Sinica 1985年第2期1卷 159-170页

作者： Li Sijian Wang Renjie luo Zudao Hua xiaoxi Shanghai Jiaotong University Shanghai Institute of Computational Technique Shanghai Jiaotong University Shanghai China Shanghai Institute of Computational Technique Shanghai China

The present paper investigates the basic characteristics of the interlaminar stresses in adouble-layer cylindrical shell with both ends simply-supported under uniform external or internalpressure. The double layer shell is composed of a 0°fiber-reinforced composite layer and an isotropiclayer. In this paper, this axisymmetric problem is solved exactly with the three-dimensional theory ofelasticity. Both the displacement field and the stress field of each layer of the shell are expressed inFourier series and Fourier-Bessel series. Then we illustrate the effects of the various parameters, suchas geometry, material constants, loading conditions and stacking sequence, on the interlaminarstresses.

关键词： double-layer composite cylindrical shell fiber reinforced lamina isotropic lamina transversely isotropic edge effect of interlaminar stress exact solution of three-dimensional elasticity Fourier-Bessel series, static condition and conjunc

Embryonic development and organogenesis of Chinese giant salamander,Andrias davidianus

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Progress in Natural Science:Materials International 2007年第11期17卷 1303-1311页

作者： luo Jian, Xiao Yamei, luo Kaikun, Huang xiaoxi, Peng Liangyue, Liu Yun(Key Laboratory of Protein Chemistry and Fish Developmental Biology of National Education Ministry, College of Life Sciences, Hunan Normal University, Changsha 410081, China) Key Laboratory of Protein Chemistry and Fish Developmental Biology of National College of Life Sciences Hunan Normal University Changsha 410081 China

The morphology and organogenesis of Chinese giant salamander, Andrias davidianus, in its different developmental periods and stages are described in detail, which provides an intact criterion for distinguishing different stages of its developmental process. Based on the external morphological and internal histological features, six periods including 20 stages of organogenesis of Chinese giant salamander are established, which are cleavage period, blastula period, gastrula period, neurula period, organogenesis stage and hatching stage. Generally, the embryonic development of Chinese giant salamander is consistent with those of Eastern newt, Cynops orientalis, and Black spots frog, R. nigromaculata. However, they have some differences in the early cleavage process and the development of digestive system. The cleavage of Chinese giant salamander, A. davidianus is not a discoidal division type, which is different from other species reported. And the first three cleavages being meridional and a retardant development of its digestive system without halter and sucker existing are the evident features of the embryonic development of Chinese giant salamander.

关键词： Chinese giant salamander Andrias davidianus embryogenesis cleavage organogenesis

Systemic Hemodynamic Changes in Low-Dose Ethanol Embolotherapy for Soft-Tissue Arteriovenous Malformations

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Chinese Journal of Plastic and Reconstructive Surgery 2021年第1期3卷 32-40页

作者： Xi YANG Chen HUA Hui CHEN Lan luo Gang MA Xiaojie HU YaJing QIU Wenxin YU Lei CHANG Yunbo JIN xiaoxi LIN Department of Plastic Surgery Shanghai Ninth People’s HospitalShanghai Jiaotong University School of MedicineShanghai 200011China

Background Ethanol embolotherapy is considered an optimal choice for the treatment of arteriovenous malformations(AVMs);however,there are some complications associated with this *** study aimed to prospectively investigate systemic hemodynamic changes in high-flow AVMs using ethanol *** From September 2012 to September 2014,34 male patients and 26 female patients with AVMs who underwent embolotherapy(100 sessions in total)with absolute ethanol were included in this *** systolic blood pressure(SBP)and heart rate(HR)were recorded before and after each injection and throughout the *** between the initial and highest SBP(ΔmaxSP)and HR values(ΔmaxHR),as well as the initial and final SBP(ΔSP)and HR(ΔHR)values,were *** aimed to explore the potential association between these values and the amount of ethanol that was *** The total ethanol used was variable(0.01–0.40 mL/kg;mean,0.20 mL/kg).SBP and HR increased after ethanol injection in most sessions(91 in 100 sessions).SBP decreased in 9 sessions(9 in 100 sessions),while HR,oxygen saturation,and end-tidal CO2 decreased in one of the 9 sessions.ΔmaxSP andΔmaxHR averaged 38.4 mmHg and 27.8 bpm,respectively(both P<0.05),whileΔSP andΔHR averaged 3.4 mmHg and 4.0 bpm,respectively(both P<0.05).ΔmaxSP andΔmaxHR were positively correlated with the total dose of ethanol *** Elevations in SBP and HR during ethanol embolotherapy are common,temporary,and most likely pain-mediated;these increases tend to be positively correlated with ethanol *** may be regarded as an acute complication of ethanol *** combined with bradycardia,oxygen desaturation,and decreased end-tidal CO2 may be a potential predictor of cardiovascular collapse.

关键词： Systemic hemodynamic change Ethanol embolotherapy Arteriovenous malformations Hypotension Blood pressure Heart rate

Skyrmion-based logic gates controlled by electric currents in synthetic antiferromagnet

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Chinese Physics B 2023年第1期32卷 522-529页

作者：李林霖罗佳夏静周艳刘小晰赵国平 College of Physics and Electronic Engineering Sichuan Normal UniversityChengdu 610068China Department of Electrical and Computer Engineering Shinshu UniversityWakasato 4-17-1Nagano 380-8553Japan School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China Center for Magnetism and Spintronics Sichuan Normal UniversityChengdu 610068China

Skyrmions in synthetic antiferromagnetic(SAF) systems have attracted much attention in recent years due to their superior stability, high-speed mobility, and completely compensated skyrmion Hall effect. They are promising building blocks for the next generation of magnetic storage and computing devices with ultra-low energy and ultra-high ***, we theoretically investigate the motion of a skyrmion in an SAF bilayer racetrack and find the velocity of a skyrmion can be controlled jointly by the edge effect and the driving force induced by the spin current. Furthermore, we propose a logic gate that can realize different logic functions of logic AND, OR, NOT, NAND, NOR, and XOR gates. Several effects including the spin–orbit torque, the skyrmion Hall effect, skyrmion–skyrmion repulsion, and skyrmion–edge interaction are considered in this design. Our work may provide a way to utilize the SAF skyrmion as a versatile information carrier for future energy-efficient logic gates.

关键词： skyrmions logic gates synthetic antiferromagnets micromagnetic simulation

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珍珠苦瓜新品种‘美玉二号’

园艺学报 2022年第4期49卷 937-938页

作者：刘小茜郑晓明吴海滨李俊星罗少波罗剑宁龚浩广东省农业科学院蔬菜研究所广东省蔬菜新技术研究重点实验室广州510640

珍珠苦瓜新品种‘美玉二号’是以雌性较强的中早熟自交系CP92-7为母本,中迟熟优质油瓜自交系M1107-B为父本杂交选育而成。第1雌花节位18.6~18.9节,第1个瓜坐瓜节位20.2~20.8节。瓜呈长圆锥形,果实浅绿色,油亮有光泽,圆瘤为主、间有条瘤... 详细信息

珍珠苦瓜新品种‘美玉二号’是以雌性较强的中早熟自交系CP92-7为母本,中迟熟优质油瓜自交系M1107-B为父本杂交选育而成。第1雌花节位18.6~18.9节,第1个瓜坐瓜节位20.2~20.8节。瓜呈长圆锥形,果实浅绿色,油亮有光泽,圆瘤为主、间有条瘤。瓜长26.7~28.5 cm,横径6.38~6.53 cm,肉厚1.13~1.16 cm。单瓜质量397.7~427.5 g,单株产量1.66~1.89 kg,一般栽培产量约52500 kg·hm^(-2)。

关键词：苦瓜一代杂种品种

基于适宜生态水位的通州区平原河网引排水研究

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水利水运工程学报 2022年第2期 51-57页

作者：徐小溪张秀菊罗煜宁纪鹏程河海大学水文水资源学院江苏南京210098 南通市通州区水利局江苏南通226000

平原河网地区水系连通,闸泵工程众多,工程调度中存在引水缺指导依据、引水时机欠科学等问题。考虑河道水位与生态需水的逐月变化,提出了基于河道适宜生态水位区间指导闸泵工程引、排水调度的计算方法。以南通市通州区为例,将年内水位划... 详细信息

平原河网地区水系连通,闸泵工程众多,工程调度中存在引水缺指导依据、引水时机欠科学等问题。考虑河道水位与生态需水的逐月变化,提出了基于河道适宜生态水位区间指导闸泵工程引、排水调度的计算方法。以南通市通州区为例,将年内水位划分为3个水位管理期,确定河道适宜生态水位区间并进行修正,以适宜生态水位作为控制目标,对工程现状引排水量进行调整。研究结果表明:(1)高水位时期(7—10月),适宜生态水位区间为1.77~1.99 m;过渡时期(4—6月及11月),适宜生态水位区间为1.54~1.95 m;低水位时期(12月—次年3月),适宜生态水位区间为1.46~1.77 m;(2)在满足适宜生态水位区间的基础上,6月中旬及下旬需增加引水287.56万m^(3)、399.56万m^(3),其余时段均应减少引水量,共减少引水量6064.11万m^(3),7—9月需减少引水量最大。适宜生态水位思路能够客观反映河网水位年内实际变化,便于水利部门管理,给出的基于适宜生态水位约束下工程需调整的引、排水量,可为平原河网地区引排水工程调度提供参考。

关键词：平原河网地区闸泵工程适宜生态水位区间引排水调度

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苦瓜新品种‘俏绿珍珠苦瓜’

园艺学报 2023年第3期50卷 687-688页

作者：郑晓明刘小茜罗剑宁吴海滨李俊星赵钢军罗少波龚浩广东省农业科学院蔬菜研究所广东省蔬菜新技术研究重点实验室广州510640

苦瓜新品种‘俏绿珍珠苦瓜’是以雌性较强的自交系LCP90-11为母本,早熟优质丰产油瓜自交系M5-2为父本杂交选育而成。第1朵雌花着生节位春季16.3节、秋季16.5节,第1坐瓜节位春季17.8节、秋季18.0节。瓜长圆锥形,瓜皮绿色,圆瘤为主,间有... 详细信息

苦瓜新品种‘俏绿珍珠苦瓜’是以雌性较强的自交系LCP90-11为母本,早熟优质丰产油瓜自交系M5-2为父本杂交选育而成。第1朵雌花着生节位春季16.3节、秋季16.5节,第1坐瓜节位春季17.8节、秋季18.0节。瓜长圆锥形,瓜皮绿色,圆瘤为主,间有条瘤。瓜长27.9~30.6 cm,横径5.64~6.34 cm,肉厚1.11~1.12 cm。单瓜质量355.0~442.3 g,单株产量1.36~1.99 kg,一般栽培产量约37500 kg·hm^(-2)。适宜广东、广西、海南和福建等地春、秋季种植。

关键词：苦瓜一代杂种品种

基于感官品质、质构特征及理化成分分析的中国南瓜果实感官综合评价预测模型

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食品科学 2022年第23期43卷 63-71页

作者：赵思颖李璐刘小茜赵钢军吴海滨罗剑宁龚浩郑晓明李俊星广东省农业科学院蔬菜研究所广东广州510640 广东省蔬菜新技术研究重点实验室广东广州510640 广东省农业科学院蚕业与农产品加工研究所广东广州510610

本实验以20份不同类型中国南瓜种质资源的果实为研究对象,分别测定其感官品质指标、质构特征指标和理化成分指标,并进行差异性分析、相关性分析及逐步回归分析,以建立一套数据化、能够综合评价中国南瓜果实感官品质的方法,为探究感官品... 详细信息

本实验以20份不同类型中国南瓜种质资源的果实为研究对象,分别测定其感官品质指标、质构特征指标和理化成分指标,并进行差异性分析、相关性分析及逐步回归分析,以建立一套数据化、能够综合评价中国南瓜果实感官品质的方法,为探究感官品质关键因子和优良品质新品种选育提供理论依据。差异性分析结果表明,不同南瓜材料的感官品质指标、质构特征指标和理化成分含量均存在不同程度的差异。相关性分析结果表明,南瓜果实的柔软度、黏糯度、甜度越高,口感越微润,综合口感越好;此外,质构特征指标中弹性、内聚性越高,黏附性越低,南瓜果实的综合口感越好;理化成分中糖、果胶和总淀粉含量越高,含水量越低,综合口感越好。通过逐步回归分析建立了Y=-1.547+0.072×果糖含量+0.052×可溶性果胶含量-0.053×直链淀粉含量-0.022×黏附性+21.278×粗纤维含量(Y为综合口感预测得分)的感官综合评价预测模型,该模型预测口感效果较好,综上,以质构特征和理化成分含量作为客观评价指标可以较好地弥补感官分析主观性较强的劣势。

关键词：中国南瓜感官分析质构特征理化成分相关性分析回归模型