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微震监测技术在冬瓜山铜矿地压灾害安全管理中的应用

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现代矿业 2024年第4期40卷 170-173页

作者：刘翔张君杨素俊铜陵有色金属集团股份有限公司冬瓜山铜矿长沙施玛特迈科技有限公司金属矿山安全与健康国家重点实验室华唯金属矿产资源高效循环利用国家工程研究中心有限公司

冬瓜山铜矿井下岩爆灾害突出,特别是在回采矿柱时极易诱发顶板冒落,给矿山的地压灾害安全管理工作带来挑战。结合冬瓜山铜矿岩爆灾害特征,选定监测区域开展微震监测系统台网设计,提出了基于三维可视化模型空间分区定量化分析岩爆灾害活... 详细信息

冬瓜山铜矿井下岩爆灾害突出,特别是在回采矿柱时极易诱发顶板冒落,给矿山的地压灾害安全管理工作带来挑战。结合冬瓜山铜矿岩爆灾害特征,选定监测区域开展微震监测系统台网设计,提出了基于三维可视化模型空间分区定量化分析岩爆灾害活动的方法。通过对微震数据的时空分布特点、微震事件活动与生产活动之间的相关性进行分析,得到了岩爆灾害控制的有效措施,如调整作业面绕开应力集中区域,优化爆破参数降低对围岩的扰动,及时充填以及提前对危险区域加强支护措施等。通过微震监测技术可以及时掌握岩爆灾害状况,进而为地压灾害安全管理提供科学依据。

关键词：岩爆地压灾害微震监测定量分析安全管理

Theoretical Analysis on the Air-Condition Cabin Technique for Satellite Temperature Adjustment on the Ground

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Journal of Thermal Science 2004年第1期13卷 80-84页

作者： Jiaxun Zhang sujun yang Hongyan Ren Jindong Li Chinese Acad Space Technol Beijing 100086 Peoples R China

The aim of this paper is to study the heat transfer mechanism of the air-condition cabin technique for satellite temperature adjustment on the ground before the launch of those satellites with pressurized structure. By the study, the temperature of the satellite can be set appropriately, and this is very important to the initial satellite temperature after the satellite operates in orbit. In the paper, the simplified physical model is provided and the mathematical equations are obtained, thereafter, the experimental data are compared with the theoretical analysis. The quantitative conclusions from the theoretical analysis can be used to direct the design or the experiment of the temperature adjustment. Finally, we can conclude that, the temperature variation rule of the satellite is exponential, and the temperature adjustment process can be predicted by the exponential formula, which is obtained from the theoretical analysis.

关键词： thermal control spacecraft temperature adjustment on the ground.

VTIQ实时剪切波弹性成像技术、 CDFI在甲状腺癌诊疗评估中的应用观察

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中国实验诊断学 2024年第2期28卷 131-135页

作者：甄敏刘晓娟杨素筠大同市第五人民医院超声科山西大同037000

目的探讨声触诊组织成像与定量技术(VTIQ)实时剪切波弹性成像技术、彩色多普勒超声(CDFI)在甲状腺癌诊疗评估中的应用效果。方法选取2021年11月—2023年6月大同市第五人民医院甲状腺癌患者91例设为恶性组,另选取同期收治的甲状腺良性... 详细信息

目的探讨声触诊组织成像与定量技术(VTIQ)实时剪切波弹性成像技术、彩色多普勒超声(CDFI)在甲状腺癌诊疗评估中的应用效果。方法选取2021年11月—2023年6月大同市第五人民医院甲状腺癌患者91例设为恶性组,另选取同期收治的甲状腺良性结节患者91例设为良性组,两组均分别接受VTIQ实时剪切波弹性成像技术、CDFI检查。统计恶性组与良性组、恶性组不同病理特征(淋巴结转移情况、疾病分期)患者、不同预后患者VTIQ[病灶组织剪切波速度(SMV)]及CDFI参数[舒张末期血流速度(EDV)、收缩期峰值流速(PSV)、血流阻力指数(RI)],分析VTIQ及CDFI参数与甲状腺癌淋巴结转移及疾病分期的关联性。结果恶性组SMV平均值、PSV、RI高于良性组,EDV低于良性组(P<0.05)。淋巴结转移、Ⅲ~Ⅳ期甲状腺癌患者SMV平均值、PSV、RI高于无淋巴结转移、Ⅰ~Ⅱ期患者;EDV低于无淋巴结转移、Ⅰ~Ⅱ期患者(P<0.05)。检验可知,SMV平均值、PSV、RI与甲状腺癌淋巴结转移、疾病分期呈显著正相关,EDV与甲状腺癌淋巴结转移、疾病分期呈显著负相关(P<0.05)。预后不良组SMV平均值、PSV、RI高于预后良好组,EDV低于预后良好组(P<0.05)。结论通过VTIQ实时剪切波弹性成像技术、CDFI检查,可明确甲状腺癌病灶信息,在疾病诊疗评估中具有较高应用价值。

关键词：甲状腺癌 VTIQ 实时剪切波弹性成像技术 CDFI

Simulation of an aircraft thermal management system based on vapor cycle response surface model

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Chinese Journal of Aeronautics 2024年第6期37卷 64-77页

作者： Haodong LIU Hongsheng JIANG sujun DONG Longxian XUE Yongji LIU Jianjun WU School of Aeronautic Science and Engineering Beihang UniversityBeijing 100191China Chengdu Aircraft Design and Research Institute Aviation Industry Corporation of ChinaChengdu 610091China

The modern aircraft Thermal Management System(TMS)faces significant challenges due to increasing thermal loads and limited heat dissipation *** optimize TMS during the conceptual design stage,the development of a modeling and simulation tool is *** this study,a TMS simulation model library was created using MATLAB/*** simplify the complexity of the Vapor Cycle System(VCS)model,a Response Surface Model(RSM)was constructed using the Monte Carlo method and validated through simulation *** the F-22 fighter TMS as an example,a thermal dynamic simulation model was constructed to analyze the variation of thermal response parameters in key subsystems and elucidate their coupling ***,the impact of total fuel flow and ram air flow on the TMS was *** findings demonstrate the existence of an optimal total fuel flow that achieves a balance between maximizing fuel heat sink utilization and minimizing bleed air *** adaptive distribution of fuel and ram air flow was found to enhance aircraft thermal management *** study contributes to improving modeling efficiency and enhancing the understanding of the thermal dynamic characteristics of TMS,thereby facilitating further optimization in aircraft TMS design.

关键词： Thermal management sys-tem Vaporcycle Response surface model Dynamic simulation MonteCarlo

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预浸带铺放过程温度场动态仿真与实验研究

固体火箭技术 2015年第3期38卷 410-414页

作者：杨涛申艳娇杨素君李志猛牛雪娟天津市现代机电装备技术重点实验室天津300387 天津工业大学机械工程学院天津300387

为了测量铺放过程中粘合点温度峰值和复合材料的温度场分布,构建了基于Lab VIEW的温度场在线测量系统。实验中预浸带铺放5层,热风枪稳定温度为200℃。实验结果表明,随着铺放过程的进行,每一层预浸带的温度曲线都出现多个峰值,且峰值逐... 详细信息

为了测量铺放过程中粘合点温度峰值和复合材料的温度场分布,构建了基于Lab VIEW的温度场在线测量系统。实验中预浸带铺放5层,热风枪稳定温度为200℃。实验结果表明,随着铺放过程的进行,每一层预浸带的温度曲线都出现多个峰值,且峰值逐渐降低,其中第1个峰值即为粘合点温度,平均分别为80.1、91.4、101.3、113、108.3℃,比较可知,各层预浸带粘合点温度逐渐升高。同时,建立了预浸带铺放温度场有限元模型,利用ANSYS中的生死单元以及循环加载技术模拟了预浸带动态铺放过程。有限元模拟结果中的粘合点温度分别为71.8、96.2、104.3、107.9、105.3℃,与实验结果相比误差可控制在10%以内,且粘合点温度越高,其准确性越好。

关键词：预浸带铺放温度场分布动态仿真实验

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画等值线的一种算法

天津纺织工学院学报 1998年第2期17卷 87-90页

作者：杨素君天津纺织工学院机械工程系

本文讨论了等值线与网格线交点的追踪和计算方法．用此方法画出等值线图，处理方便，迅速，准确，占用内存少．

关键词：交点追踪网格线计算数值线图

Novel Mutations of SLC26A4 in Chinese Patients with Non-syndromic Hearing Loss

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Novel Mutations of SLC26A4 in Chinese Patients with Non-synd...

Annealing Temperature-Dependent Luminescence Color Coordination in Eu-Doped AlN Thin Films

第十二次全国医学遗传学学术会议

作者： Gendong Yao Shouxia Li Dingli Chen Huijun Wang Jin Zhang Zhixing Feng Lili Guo Zhiming yang sujun yang Caixia Sun Xiaofang Zhang Duan Ma Central Hospital of Handan Department of Biochemistry and Molecular Biology Institute of Medical SciencesShanghai Medical CollegeFudan University Key Laboratory of Molecular Medicine Ministry of EducationDepartment of Biochemistry and Molecular BiologyInstitute of Medical SciencesShanghai Medical CollegeFudan University Children's Hospital Fudan University Department of Biochemistry and Molecular Biology Institute of Medical SciencesShanghai Medical CollegeFudan University

Objectives Non-syndromic hearing loss is the most common neurosensory deafness where majority of patients have largely diversified genetic *** study is to define the genetic profile of deafness in Chinese population with potential to discover novel mutations. Methods A total of 227 segregating deaf students and 200 individuals with normal hearing were *** the Sanger sequencing chemistry,direct sequencing was performed on entire coding regions of GJB2,GJB3,SLC26A4 and mtDNA m.C1494T and *** Direct sequencing analysis revealed that 53(23.35%) of 227 patients carried at least 1 mutant allele in GJB2,40(17.62%) patients in SLC26A4,5(2.20%) patients in mtDNA A1555G,and 1(0.44%) patient in mtDNA C1494T *** patients carried 3 unclassified mutations in GJB3 *** 38 mutant variants were detected in this cohort of patients,including 8 novel mutations in *** 8 novel variants were 6 missense substitutions(p.V163L,p.G222S, p.A456D,p.N457I,p.C466Y,p.F667L),1 nonsense mutation(p.W472X) and 1 frameshift (***612Ilefs×23).Conclusions This study demonstrated high prevalence of GJB2,SLC26A4 and mtDNA A1555G mutations in Chinese patients with non-syndromic hearing loss and discovered 8 novel mutations in *** of these novel mutations were predicted pathogenic variants.

关键词： SLC26A4 Enlarged vestibular aqueduct Compound heterozygotes Hearing loss

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Journal of Materials Science and Chemical Engineering 2024年第1期12卷 20-28页

作者： Yingda Qian Mariko Murayama sujun Guan Xinwei Zhao Department of Physics Tokyo University of Science Tokyo Japan Research Center for Space System Innovation Tokyo University of Science Chiba Japan

AlN was used as a host material and doped with Eu grown on Si substrate by pulsed laser deposition (PLD) with low substrate temperature. The X-ray diffraction (XRD) data revealed the orientation and the composition of the thin film. The surface morphology was studied by scanning electron microscope (SEM). While raising the annealing temperatures from 300˚C to 900˚C, the emission was observed from AlN: Eu under excitation of 260 nm excitation. The photoluminescence (PL) was integrated over the visible light wavelength shifted from the blue to the red zone in the CIE 1931 chromaticity coordinates. The luminescence color coordination of AlN: Eu depending on the annealing temperatures guides the further study of Eu-doped nitrides manufacturing on white light emitting diode (LED) and full color LED devices.

关键词： Low-Temperature PLD Growth Eu-Doped AlN Thin Film White Light Emitting Diode

维普期刊数据库评论

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不确定信息的机械产品设计方案评价方法

机械科学与技术 2008年第7期27卷 945-949,954页

作者：刘英平杨素君陈晓霞天津工业大学机械电子学院天津300160

机械产品设计方案评价中,针对评价指标值具有模糊性、指标权重具有不完全性的问题,引入模糊数据包络分析(DEA),分析模糊DEA在不完全权重信息处理方面存在的不足,提出改进的模糊DEA评价方法。该方法首先将指标值转化为无量纲的梯形模糊数... 详细信息

机械产品设计方案评价中,针对评价指标值具有模糊性、指标权重具有不完全性的问题,引入模糊数据包络分析(DEA),分析模糊DEA在不完全权重信息处理方面存在的不足,提出改进的模糊DEA评价方法。该方法首先将指标值转化为无量纲的梯形模糊数,然后以梯形模糊数为基础,以不完全权重信息为约束,建立只有输出指标且含有偏好信息的模糊DEA模型,最后,基于去模糊化方法,将模糊DEA模型转化为确定性模型并求解。通过实验分析,验证该方法的合理性和可行性。

关键词：机械产品评价不确定信息数据包络分析