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Research Developments and Prospects on Microseismic Source Location in Mines

Engineering 2018年第5期4卷 653-660页

作者： jiulong Cheng Guangdong Song Xiaoyun Sun Laifu Wen Fei li State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology Beijing 100083 China Laser Institute Qilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China School of Electrical and Electronic Engineering Shijiazhuang Tiedao University Shijiazhuang 050043 China

Microseismic source location is the essential factor in microseismic monitoring technology, and its loca- tion precision has a large impact on the performance of the technique. Here, we discuss the problem of low-precision location identification for microseismic events in a mine, as may be obtained using conven-tional location methods that are based on arrival time. In this paper, microseismic location characteristics in mining are analyzed according to the characteristics of the mine＇s microseismic wavefield. We review research progress in mine-related microseismic source location methods in recent years, including the combination of the Geiger method with the linear method, combined microseismic event location method, optimization of relative location method, location method without pre-measured velocity, and location method without arrival time picking. The advantages and disadvantages of these methods are discussed, along with their feasible conditions. The influences of geophone distribution, first arrival time picking, and the velocity model on microseismic source location are analyzed, and measures are proposed to influence these factors. Approaches to solve the problem under study include adopting information fusion, combining and optimizing existing methods, and creating new methods to realize high-precision microseismic source location. Optimization of the velocity structure, along with applications of the time-reversal imaging technique, passive time-reversal mirror, and relative interferometric imag-ing, are expected to greatly improve microseismic location precision in mines. This paper also discusses the potential application of information fusion and deep learning methods in microseismic source location in mines. These new and innovative location methods for microseismic source location have extensive prospects for development.

关键词： Microseismic source location Influencing factors Time-reversal imaging Research progress Prospects for development

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Impact of Kuroshio on the dissolved oxygen in the East China Sea region

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Journal of Oceanology and limnology 2019年第2期37卷 513-524页

作者： ZUO jiulong SONG Jinming YUAN Huamao li Xuegang li Ning DUAN liqin Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of Sciences University of Chinese Academy of Sciences Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Center for Ocean Mega-Science Chinese Academy of Sciences Ocean College Hebei Agricultural University

A marine survey was conducted from 18 May to 13 June 2014 in the East China Sea (ECS) and its adjacent Kuroshio Current to examine the spatial distribution and biogeochemical characteristics of dissolved oxygen (DO) in spring. Waters were sampled at 10?25 m intervals within 100 m depth, and at 25?500 m beyond 100 m. The depth, temperature, salinity, and density (sigma- t ) were measured in situ with a conductivity-temperature-depth (CTD) sensor. DO concentrations were determined on board using traditional Winkler titration method. The results show that in the Kuroshio Current, DO content was the highest in the euphotic layer, then decreased sharply with depth to about 1 000 m, and increased with depth gradually thereafter. While in the ECS continental shelf area, DO content had high values in the coastal surface water and low values in the near-bottom water. In addition, a low-DO zone off the Changjiang (Yangtze) River estuary was found in spring 2014, and it was formed under the combined influence of many factors, including water stratification, high primary productivity in the euphotic layers, high accumulation/ sedimentation of organic matter below the euphotic layers, and mixing/transport of oceanic current waters on the shelf. Most notable among these is the Kuroshio intruded water, an oceanic current water which carried rich dissolved oxygen onto the continental shelf and alleviated the oxygen deficit phenomenon in the ECS, could impact the position, range, and intensity, thus the formation/destruction of the ECS Hypoxia Zone.

关键词： dissolved oxygen hypoxia Kuroshio intrusion East China Sea

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脂氧素与代谢性疾病的研究进展

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中国动脉硬化杂志 2020年第8期28卷 733-736页

作者：王丽珠龙璠钟晓武李九龙南充市高坪区人民医院检验科四川省南充市637100 川北医学院转化医学研究中心四川省南充市637000

脂氧素(LX)是体内重要的内源性脂质抗炎介质,来源于花生四烯酸,具有抗炎和促炎症消退的作用。近年来,LX在糖尿病、肥胖、心血管疾病等代谢性疾病中的作用引起广泛关注。为此,本文就LX的生物学作用,以及其在代谢性疾病中的研究进展做一... 详细信息

脂氧素(LX)是体内重要的内源性脂质抗炎介质,来源于花生四烯酸,具有抗炎和促炎症消退的作用。近年来,LX在糖尿病、肥胖、心血管疾病等代谢性疾病中的作用引起广泛关注。为此,本文就LX的生物学作用,以及其在代谢性疾病中的研究进展做一简要综述。

关键词：脂氧素代谢性疾病炎症生物学作用

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Effects of nitrogen and salt on growth and physiological characteristics of processing tomato under drip irrigation

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International Journal of Agricultural and Biological Engineering 2021年第6期14卷 115-125页

作者： jiulong Wang Zhenhua Wang Haiqiang li Wenhao li Tianyu Wang Mingdong Tan College of Water Resources and Architectural Engineering Shihezi UniversityShihezi 832000XinjiangChina Key Laboratory of Modern Water-Saving Irrigation Corp Shihezi UniversityShihezi 832000XinjiangChina

Xinjiang of China is one of the three largest planting bases of processing tomato in the world,but soil salinization has restricted the production of tomato *** order to study the effects of soil nitrogen,salt and their interaction on growth and physiological characteristics of processing tomato under drip irrigation,different amount of nitrogen fertilizer were added to reconcile different salt stress to explore the response mechanisms of growth and yield of processing tomato to soil nitrogen and salt contents with a two-year *** results showed that the effects of soil salinity on the growth and physiological characteristics of processing tomato were significantly greater than that of input of nitrogen *** higher soil salt content(≥5.0 g/kg)significantly inhibited the growth of processing *** increase in addition of nitrogen fertilizer could alleviate the salt inhibition and promote the growth of processed tomato with the increase of soil salt content,and the maximum nitrogen application rate was 300 kg/*** linear plus platform was selected to determine the nitrogen effect models of non-saline-alkali soil and weak saline-alkali soil,but the square root nitrogen effect model of moderate saline-alkali soil was selected to accurately predict the yield of processing *** was suggested that the processing tomatoes should be planted in moderate saline-alkali soil to achieve higher yields due to lower input of nitrogen fertilizer,potentially reducing fertilizer costs and maximizing profits from high processing tomato *** results have a strong guiding significance for planting of processing tomato on saline-alkali land and appropriate fertilization to increase the yield of processing tomato.

关键词： drip irrigation processing tomato salinity photosynthetic fluorescence parameters nitrogen use efficiency water use efficiency

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Near-infrared luminescent Nd^(3+)/Yb^(3+)-codoped metal-organic framework for ratiometric temperature sensing in physiological range

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Journal of Rare Earths 2021年第9期39卷 1024-1030页

作者： Chao Gu Yanyun Ding Xinghua Quan Mengyao Gong jiulong Yu Dian Zhao Chunxia li Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004China

Self-calibrating luminescent thermometry employing luminescence within the optical transparency windows provides a promising prospect for temperature measurement in the biological *** this work,a new Nd^(3+)/Yb^(3+)-codoped metal-organic framework Nd_(0.95)Yb_(0.05)BPTC showing threedimensional anionic network,obtained by reacting ligand[1,1’-biphenyl]-3,3’,5,5’-tetracarboxylic acid(H4BPTC)with Nd^(3+)and Yb^(3+)ions under solvothermal conditions,is *** 808 nm photoexcitation,Nd_(0.95)Yb_(0.05)BPTC simultaneously emits the characteristic near-infrared luminescence of Nd^(3+)and Yb^(3+)ions based on the efficient energy transfer from Nd^(3+)to Yb^(3+)*** addition,the emission intensity ratio of Yb^(3+)and Nd^(3+)shows good exponential-like response to temperature in the physiological range of 293-323 *** feature properties of Nd_(0.95)Yb_(0.05)BPTC include near-infrared absorption and emission,favorable temperature sensitivity and accurate temperature uncertainty,as well as good chemical stability,making such system useful in biomedical applications.

关键词： Lanthanide metal-organic frameworks Near-infrared luminescence Temperature sensing Energy transfer Rare earths

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丙肝患者血清HCV RNA拷贝数与HCV Ab定量和肝脏功能损伤程度的关系

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中国热带医学 2019年第8期19卷 771-775页

作者：许媛付浩谭军陈莹郑阳钟晓武李九龙苟海梅邓健康王东生刘素兰方莉川北医学院附属医院检验科四川南充637000 川北医学院医学检验系四川南充637000 川北医学院转化医学研究中心四川南充637000

目的对丙型肝炎患者丙肝病毒RNA(HCV RNA)、丙肝病毒抗体(HCV Ab)和肝功能指标定量结果进行统计分析,并探讨HCV RNA与HCV Ab和肝功能指标间的关系,为丙肝患者诊断和治疗提供参考依据。方法收集342例丙肝患者血清,采用实时荧光定量PCR技... 详细信息

目的对丙型肝炎患者丙肝病毒RNA(HCV RNA)、丙肝病毒抗体(HCV Ab)和肝功能指标定量结果进行统计分析,并探讨HCV RNA与HCV Ab和肝功能指标间的关系,为丙肝患者诊断和治疗提供参考依据。方法收集342例丙肝患者血清,采用实时荧光定量PCR技术检测HCV RNA拷贝数,采用化学发光技术检测HCV Ab浓度,分别采用速率法、免疫比浊法、溴甲酚紫法和重氮盐法检测血清ALT、AST,PA,ALB和TBIL、DBIL的活性或浓度。结果 342例研究对象中,HCV RNA拷贝数以N×10^6IU/mL为主,占48.7%;而N×10^3IU/mL和N×10^4IU/mL最少,分别占4.3%和7.4%。在HCV RNA拷贝数小于1×10^3IU/mL组中,HCV Ab浓度较其他组低,而HCV RNA拷贝数在N×(10^3-10^7)IU/mL组间时,HCV Ab浓度差异无统计学意义(P>0.05);当HCV Ab浓度大于10 S/CO时,HCV RNA阳性率升高,可达88.7%。与HCV RNA拷贝数小于N×10^3IU/mL相比,大于N×10^4IU/mL的丙肝患者血清ALT、AST、ALB和PA异常率增加(P0.05)。结论丙肝病毒主要损伤肝细胞及其合成功能,联合检测HCV Ab和HCV RNA拷贝数对丙型肝炎的诊断和治疗具有重要的意义。

关键词：丙肝病毒RNA 丙肝病毒抗体肝功能

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云南省金平县芒人高脂血症与HLA-B、HLA-DR基因多态性研究

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系统医学 2022年第22期7卷 1-5页

作者：黄娟刘丽何俊梅白世光李红金兰花刘宇李久龙金吕飞昆明医科大学第五附属医院风湿免疫科云南个旧661000 云南省金平县人民医院内科云南金平661500

目的探讨HLA-B、HLA-DR基因多态性与云南省金平县芒人三酰甘油血症及胆固醇血症的相关性。方法检测2020年8—12月收集的云南省金平县金水河镇的3个自然村中的202名自愿参与且16岁以上的芒人居民的血清三酰甘油(triglycerides,TG)及总胆... 详细信息

目的探讨HLA-B、HLA-DR基因多态性与云南省金平县芒人三酰甘油血症及胆固醇血症的相关性。方法检测2020年8—12月收集的云南省金平县金水河镇的3个自然村中的202名自愿参与且16岁以上的芒人居民的血清三酰甘油(triglycerides,TG)及总胆固醇(total cholesterol,TC),采用寡聚核苷酸探针方法(PCR-SSO)检测其HLA-B、HLA-DR的基因型和血清型。结果芒人居民高TG的总患病率为26.7%,男性为28.4%,女性为25.0%;高TC的总患病率为13.9%,男性为12.7%,女性为15.0%。不同性别、年龄间患病率差异无统计学意义(P>0.05)。共检测出19种HLA-B位点等位基因、14种HLA-DRB1位点等位基因、12种HLA-B位点血清型、8种HLA-DRB1位点血清型。其中,HLA-B*40:01和HLA-DR*12:02是芒人的优势基因。高TG组HLA-B*13:01、HLA-B*40:02基因型及HLA-B*13血清型显著优于血脂正常组(13.5%vs 4.9%,0.0%vs5.7%,13.5%vs 4.9%),差异有统计学意义(χ^(2)=7.649,P=0.006;χ^(2)=4.339,P=0.037;χ^(2)=7.649,P=0.006);高TG组的血清型HLA-B*15显著低于正常组(3.1%vs 10.6%),差异有统计学意义(χ^(2)=4.931,P=0.026)。高TC组血清型HLA-B*15显著高于正常组(21.2%vs 10.6%),差异有统计学意义(χ^(2)=4.423,P=0.035)。结论携带HLA-B*13:01、HLA-B*40:02及HLA-B*13的芒人罹患高TG的风险显著高于未携带者,携带HLA-B*15的芒人罹患高TG的风险显著低于未携带者,罹患高TC的风险高于未携带者。

关键词：三酰甘油血症胆固醇血症人白细胞抗原

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胎面气孔率对轮胎质量的影响与管控办法

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橡塑技术与装备 2023年第4期49卷 44-47页

作者：张志坚张超王纪增李万顺李九龙杨震八亿橡胶有限责任公司山东枣庄277000

结合产品质量与成本控制对胎面气孔率波动造成的影响进行剖析,并通过研究分析从混炼胶配方优化、调整混炼胶存放周期、强化混炼工艺执行、挤出低温供胶、终口型结构改进等方面制定了管控措施,通过措施执行,胎面气孔率得到有效控制,因其... 详细信息

结合产品质量与成本控制对胎面气孔率波动造成的影响进行剖析,并通过研究分析从混炼胶配方优化、调整混炼胶存放周期、强化混炼工艺执行、挤出低温供胶、终口型结构改进等方面制定了管控措施,通过措施执行,胎面气孔率得到有效控制,因其所引发的质量与成本损失得到显著改善,达到了提升产品质量、降低生产成本的预期目的。

关键词： TBR轮胎胎面气孔率不良率磨耗性能

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A Novel Vibriophage vB_VcaS_HC Containing Lysogeny-Related Gene Has Strong Lytic Ability against Pathogenic Bacteria

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Virologica Sinica 2021年第2期36卷 281-290页

作者： Chengcheng li Zengmeng Wang jiulong Zhao Long Wang Guosi Xie Jie Huang Yongyu Zhang Key Laboratory of Biofuels Shandong Provincial Key Laboratory of Energy GeneticsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China University of Chinese Academy of Sciences Beijing 100049China Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071China

To avoid the negative effects of antibiotics,using phage to prevent animal disease becomes a promising method in ***,a lytic phage provisionally named vB_Vca S_HC that can infect the pathogen(i.e.,Vibrio campbellii 18)of prawn was *** phage has an isometric head and a non-contractile *** phage infection,the induced host mortality in 5.5 h reached ca.96%,with a latent period of 1.5 h and a burst size of 172 PFU/*** has an 81,566 bp circular ds DNA genome containing 121 open reading frames(ORFs),and ca.71%of the ORFs are functionally *** genomic and phylogenetic analysis revealed that it is a novel phage belonging to Delepquintavirus,Siphoviridae,*** the phage genome,besides the ordinary genes related to structure assembly and DNA metabolism,there are 10 auxiliary metabolic *** the first time,the pyruvate phosphate dikinase(PPDK)gene was found in phages whose product is a key rate-limiting enzyme involving Embden-Meyerhof-Parnas(EMP)***,although the phage has a strong bactericidal activity and contains a potential lysogeny related gene,i.e.,the recombinase(Rec A)gene,we did not find the phage turned into a lysogenic ***,the phage genome does not contain any bacterial virulence gene or antimicrobial resistance *** study represents the first comprehensive characterization of a lytic *** phage and indicates that it is a promising candidate for the treatment of *** infections.

关键词： Vibrio campbellii Phage Lysogeny RecA Auxiliary metabolic gene

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Sysmex XE-5000、Sysmex XN-2000 i全自动血球分析仪及手工法在体液白细胞计数与分类计数中的应用效果比较

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中国民康医学 2017年第17期29卷 10-12页

作者：田大斌谢鹏程李九龙费中海张金花西南石油大学校医院四川成都610500 川北医学院附属医院

目的:比较Sysmex XE-5000、Sysmex XN-2000 i及手工法在体液白细胞计数与分类计数中的应用效果。方法:收集67例临床患者脑脊液、胸腹腔积液标本,分别使用Sysmex XN-2000i全自动血球分析仪体液模式(半导体激光的流式技术-仪器法)、Sysmex... 详细信息

目的:比较Sysmex XE-5000、Sysmex XN-2000 i及手工法在体液白细胞计数与分类计数中的应用效果。方法:收集67例临床患者脑脊液、胸腹腔积液标本,分别使用Sysmex XN-2000i全自动血球分析仪体液模式(半导体激光的流式技术-仪器法)、Sysmex XE-5000(仪器法)和显微镜人工计数法(手工法)三种方法进行白细胞计数与分类计数,对三种方法的结果进行比较。结果:Sysmex XE-5000与手工法、Sysmex XN-2000i与手工法、Sysmex XE-5000与Sysmex XN-2000i细胞计数的相关系数R分别为0.9396、0.9660及0.9730;细胞分类计数单核细胞的相关性分别为0.9049、0.9123及0.9470;多个核细胞的相关系数分别为0.9389、0.9474及0.9460。分析数据显示,三种方法对胸、腹腔积液、脑脊液白细胞计数与分类计数效果无显著差异。结论:Sysmex XE-5000、Sysmex XN-2000i及手工法在体液白细胞计数与分类计数中的应用效果相同。

关键词： Sysmex XE-5000 Sysmex XN-2000i 显微镜法体液白细胞计数白细胞分类

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