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Alterations of mtDNA copy number and 4977 bp deletion induced by ionizing radiation in human peripheral blood

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Nuclear Science and Techniques 2013年第6期24卷 67-73页

作者： liu yulong WANG Ping HAN Lin ZHAO Fengling GUO Fei WANG Xiai LYU Yumin The Second Affiliated Hospital of Soochow University Henan Institute of Occupational Medicine College of Public Health Zhengzhou University

Alterations of mitochondria DNA(mtDNA)4977 bp common deletion(CD)and mtDNA copy number induced by ionizing radiation were observed in human different cell lines and total body irradiation ***,only few experiments have evaluated the levels of the CD and mtDNA copy number in human peripheral blood exposed to ionizing radiation till *** aim of this study is to analyze the mtDNA alterations in irradiated human peripheral blood from healthy donors as well as to explore their feasibility as biomarkers for constructing new *** blood samples were collected from six healthy donors,and exposed to 60Co gamma ray with the doses of 0 Gy,1 Gy,2 Gy,3 Gy,4 Gy and 5 *** of the CD and mtDNA copy number in irradiated samples after 2h or 24h incubation were detected using TaqMan real-time PCR,and the CD ratio was *** results showed that the mean of the CD ratio and the CD copy number exhibited a dose-dependent increase 2 h in the dose range from 0–5 Gy,and of the mtDNA copy number significantly increased 24 h in irradiated groups compared with 0 Gy group after *** indicates that the parameters in human peripheral blood may be considered as molecular biomarkers to applying construction of new biodosimeter.

关键词：线粒体DNA 电离辐射诱导人外周血拷贝数分子生物标志物 bp mtDNA 全身照射

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显示器件亮度测量影响因素研究

计量与测试技术 2024年第8期51卷 1-4页

作者：刘玉龙刘宏欣黎俊赵宣汤坤闵林苏州市计量测试院

亮度作为显示器件的关键技术指标之一,其测量结果的准确度易受多种因素影响。本文根据测量的设备、环境、方法及显示器件亮度的空间特性、时间特性、光谱特性等,对显示器件亮度的影响因素进行分析。

关键词：显示器件亮度亮度测量计量学

Preparations,Characterizations and Applications of Chitosan-based Nanoparticles

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Journal of Ocean University of China 2007年第3期6卷 237-243页

作者： liu Chenguang TAN yulong liu Chengsheng CHEN Xiguang YU Lejun College of Marine Life Science Ocean University of China Qingdao 266003 P. R. China

Chitosan is a natural polysaccharide prepared by the N-deacetylation of chitin. In this paper we have reviewed the methods of preparation of chitosan-based nanoparticles and their pharmaceutical applications. There are five methods of their prepa-rations:emulsion cross-linking,emulsion-droplet coalescence,ionic gelation,reverse micellar method and chemically modified chi-tosan method. Chitosan nanoparticles are used as carriers for low molecular weight drug,vaccines and DNA. Releasing characteris-tics,biodistribution and applications are also summarized.

关键词： chitosan nanoparticle delivery system

湖山铀矿重型卡车回头曲线道路破坏原因及应对措施

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矿业研究与开发 2024年第5期44卷 166-173页

作者：王文韬闫国斌黄磊刘玉龙汪志平曾冰勇杨向乐中广核铀业发展有限公司北京100029

露天矿山回头曲线道路是影响矿岩运输的关键路段。为提高道路回头曲线路况水平,解决该处道路凹凸不平、车辙深坑等破坏问题,以纳米比亚湖山铀矿为工程背景,分别计算、验证各个回头曲线处道路的路基强度、路面强度、超高设置,并结合生产... 详细信息

露天矿山回头曲线道路是影响矿岩运输的关键路段。为提高道路回头曲线路况水平,解决该处道路凹凸不平、车辙深坑等破坏问题,以纳米比亚湖山铀矿为工程背景,分别计算、验证各个回头曲线处道路的路基强度、路面强度、超高设置,并结合生产情况提出相应管理措施。研究结果表明:地表钙结砾岩路基承载能力为1026.754 kPa大于其实际承受载荷825.0506 kPa,因此钙结砾岩路基无需换填;由路面厚度来表征道路强度大小,以各路段的车辆类型、交通量、道路设计为基本输入参数,Z1S3坑口、Z2S3坑口、6号排土场出入口回头曲线路面的最小厚度分别修正为231.91 cm、182.22 cm、185.53 cm,Z2S2坑口回头曲线路面厚度不需调整;超高、车速、拐弯半径应满足tanα=v^(2)/(Rg),且车速应控制在10 km/h,Z1S3坑口重车道与轻车道、Z2S2坑口重车道、Z2S3坑口重车道、6号排土场出入口重车道与轻车道的回头曲线超高分别修正为2.4∶100,1.6∶100,2.7∶100,3.3∶100,1.6∶100,2.5∶100;管理措施包含加强养护、规范驾驶、规范铲装三方面内容。研究结果在矿山道路安全性、使用寿命、运输效率、综合成本等方面有明显改善,可为国内外露天矿山回头曲线道路设计优化提供借鉴。

关键词：露天矿山回头曲线路基强度回弹弯沉值超高

Parity-dependent unidirectional and chiral photon transfer in reversed-dissipation cavity optomechanics

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Fundamental Research 2023年第1期3卷 21-29页

作者： Zhen Chen Qichun liu Jingwei Zhou Peng Zhao Haifeng Yu Tiefu Li yulong liu Beijing Academy of Quantum Information Sciences Beijing 100193China CAS Key Laboratory of Microscale Magnetic Resonance University of Science and Technology of ChinaHefei 230026China School of Integrated Circuits and Frontier Science Center for Quantum Information Tsinghua UniversityBeijing 100084China

Nonreciprocal elements,such as isolators and circulators,play an important role in classical and quantum information ***,strong nonreciprocal effects have been experimentally demonstrated in cavity optomechanical *** these approaches,the bandwidth of the nonreciprocal photon transmission is limited by the mechanical resonator linewidth,which is arguably much smaller than the linewidths of the cavity modes in most electromechanical or optomechanical *** this work,we demonstrate broadband nonreciprocal photon transmission in the reversed-dissipation regime,where the mechanical mode with a large decay rate can be adiabatically eliminated while mediating anti-PT-symmetric dissipative coupling with two kinds of phase *** the relative phases allows the observation of periodic Riemann-sheet structures with distributed exceptional points(Eps).At the Eps,destructive quantum interference breaks both theT-andP-inversion symmetry,resulting in unidirectional and chiral photon *** the reversed-dissipation regime,the nonreciprocal bandwidth is no longer limited by the mechanical mode linewidth but is improved to the linewidth of the cavity ***,we find that the direction of the unidirectional and chiral energy transfer could be reversed by changing the parity of the *** non-Hermitian couplings to a three-cavity model,the broken anti-PT-symmetry allows us to observe high-order Eps,at which a parity-dependent chiral circulator is *** driving-phase controlled periodical Riemann sheets allow observation of the parity-dependent unidirectional and chiral energy transfer and thus provide a useful cell for building up nonreciprocal array and realizing topological,e.g.,isolators,circulators,or amplifiers.

关键词： Dissipation-reversed cavity optomechanics Nonreciprocal photon transfer Odd-even exceptional points Anti-PT symmetry Chiral circulators

The Influence Analysis of Resistance Change to Efficiency-Optimization Control for IPMSMs Used in Electric Vehicle 25th

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The Influence Analysis of Resistance Change to Efficiency-Op...

Spatial distribution of shallow landslides caused by Typhoon Lekima in 2019 in Zhejiang Province, China

第25届中国控制与决策会议

作者： Qinmu Wu Yuan Xu yulong liu Shulong Wei Electric Engineering institute Guizhou University

ISBN: (纸本)9781467355339

The efficiency-optimization method based on loss model of motor is a good method, which can realize quickly efficiency optimization, but it depend on parameters of motor. This paper analyzes influence of resistance change to efficiency-optimization control of interior permanent-magnet synchronous motor （IPMSM）. Firstly, each loss of the motor during operation was analyzed, and its total loss was modeled. Then, the efficiency optimization of the motor was modeled as an optimization problem with constraints, the problem is solved according to optimization theory. Finally, the influence of resistance change to the efficiency optimization is analysed, the influence is very small, it can even be neglect. By the simulation, the analysis results in this paper was verified.

关键词： Electric vehicle IPMSM Efficiency Optimization Resistance change

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Journal of Mountain Science 2024年第5期21卷 1564-1580页

作者： CUI yulong YANG liu XU Chong ZHENG Jun School of Civil Engineering and Architecture Anhui University of Science and TechnologyHuainan 232001China National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China Department of Civil Engineering Zhejiang UniversityHangzhou 310058China

In recent years, the coastal region of Southeast China has witnessed a significant increase in the frequency and intensity of extreme rainfall events associated with landfalling typhoons. The hilly and mountainous terrain of this area, combined with rapid rainfall accumulation, has led to a surge in flash floods and severe geological hazards. On August 10, 2019, Typhoon Lekima made landfall in Zhejiang Province, China, and its torrential rainfall triggered extensive landslides, resulting in substantial damage and economic losses. Utilizing high-resolution satellite images, we compiled a landslide inventory of the affected area, which comprises a total of 2,774 rainfallinduced landslides over an area of 2965 km2. The majority of these landslides were small to mediumsized and exhibited elongated, clustered patterns. Some landslides displayed characteristics of high-level initiation, obstructing or partially blocking rivers, leading to the formation of debris dams. We used the inventory to analyze the distribution pattern of the landslides and their relationship with topographical, geological, and hydrological factors. The results showed that landslide abundance was closely related to elevation, slope angle, faults, and road density. The landslides were predominantly located in hilly and low mountainous areas, with elevations ranging from 150 to 300 m, slopes of 20 to 30 degrees, and a NE-SE aspect. Notably, we observed the highest Landslide Number Density(LND) and Landslide Area Percentage(LAP) in the rhyolite region. Landslides were concentrated within approximately 4 km on either side of fault zones, with their size and frequency negatively correlated with distances to faults, roads, and river systems. Furthermore, under the influence of typhoons, regions with denser vegetation cover exhibited higher landslide density, reaching maximum values in shrubland areas. In areas experiencing significantly increased concentrated rainfall, landslide density also showed a corr

关键词： Typhoon rainfall Landslide characteristics Spatial distribution Southeast coastal region

钇-90树脂微球选择性内放射治疗后切除肝右叶巨块型肝癌1例

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介入放射学杂志 2024年第3期33卷 335-337页

作者：谭家铖李承志张艳李王海刘玉龙韩键林印胜暨南大学附属第一医院介入血管外科广东广州510630

1临床资料患者男,48岁,因“右侧腹痛2年余”入院。入院查体:腹部未扪及包块,肝Murphy征(-)。肝浊音界存在,无肝区和脾区叩击痛,移动性浊音阴性。实验室检查:甲胎蛋白(AFP)66840 ng/m L,白蛋白(ALB)39.7 g/L,乙肝病毒表面抗原(HBs Ag)阴... 详细信息

1临床资料患者男,48岁,因“右侧腹痛2年余”入院。入院查体:腹部未扪及包块,肝Murphy征(-)。肝浊音界存在,无肝区和脾区叩击痛,移动性浊音阴性。实验室检查:甲胎蛋白(AFP)66840 ng/m L,白蛋白(ALB)39.7 g/L,乙肝病毒表面抗原(HBs Ag)阴性,丙氨酸转氨酶(ALT)69 U/L,天冬氨酸转氨酶(AST)88 U/L,总胆红素(TBil)23.9μmol/L,余无异常。

关键词：肝癌钇-90微球经动脉放疗栓塞

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优质籼型三系不育系星泰A的选育与应用

杂交水稻 2024年第3期39卷 76-78页

作者：刘玉龙李中希郭爱军周小波曾燕蒋建为杨正仁湖南洞庭高科种业股份有限公司湖南岳阳414000 岳阳市农业科学研究院水稻研究所湖南岳阳414000

星泰A是湖南洞庭高科种业股份有限公司、岳阳市农业科学研究院用岳4B/广占63S的F3作母本,以鑫B为父本进行杂交,F9代与鑫A测交后多代回交转育育成的优质籼型三系不育系,具有不育性稳定、配合力强、米质优、易繁殖、所配组合生育期短等特... 详细信息

星泰A是湖南洞庭高科种业股份有限公司、岳阳市农业科学研究院用岳4B/广占63S的F3作母本,以鑫B为父本进行杂交,F9代与鑫A测交后多代回交转育育成的优质籼型三系不育系,具有不育性稳定、配合力强、米质优、易繁殖、所配组合生育期短等特点。利用星泰A与R018配制的杂交组合星泰优018于2022年通过国家农作物品种审定委员会审定。

关键词：杂交水稻不育系星泰A 优质选育