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氮气对放置单层金属丝网条件下甲烷爆炸的影响研究

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山东化工 2024年第16期53卷 227-229,232页

作者：郁佳翟志许灵钧张增亮青岛科技大学环境与安全工程学院山东青岛266000

为了减少化工生产中甲烷爆炸导致的巨大损失,通过实验研究了放置金属丝网的密闭管道内氮气对甲烷爆炸的影响。通过搭建3 m长的密闭管道,在距离点火源1.9 m处放置10目(孔径:2 mm)、16目(孔径:1.18 mm)、20目(孔径:0.85 mm)、30目(孔径:0.... 详细信息

为了减少化工生产中甲烷爆炸导致的巨大损失,通过实验研究了放置金属丝网的密闭管道内氮气对甲烷爆炸的影响。通过搭建3 m长的密闭管道,在距离点火源1.9 m处放置10目(孔径:2 mm)、16目(孔径:1.18 mm)、20目(孔径:0.85 mm)、30目(孔径:0.6 mm)的单层金属丝网,对比分析了添加体积分数10%的氮气与未添加氮气对体积分数10%甲烷/空气预混气体的爆炸影响规律。实验结果表明,添加10%的氮气能够有效地降低火焰强度、减小火焰速度、衰减爆炸超压,延缓爆炸达到峰值超压的时间,值得注意的是,添加氮气以及改变金属丝网目数均不会改变最大火焰速度出现的位置。这将为受限空间内的安全设计提供理论参考。

关键词：甲烷爆炸预混气体氮气金属丝网

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Frequent recombination in Cynoglossus abbreviatus(Pleuronectiformes:Cynoglossidae)ribosomal 18S rDNA

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Acta Oceanologica Sinica 2024年第8期43卷 98-103页

作者： Li Gong Tingqi Jiang Bilin Hu Kaixin Wang Nannan zhang zengliang Miao National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization Zhejiang Ocean UniversityZhoushan 316022China Marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316022China

The conventional theory of concerted evolution has been used to explain the lack of sequence variation in ribosomal RNA(rRNA)genes across diverse eukaryotic ***,recent investigations into rRNA genes in flatfish genome have resulted in controversial *** study focuses on 18S rRNA genes of the widely distributed tongue sole,Cynoglossus abbreviatus(Pleuronectiformes:Cynoglossidae),aiming to explore sequence *** distinct 18S rDNA sequence types(Type A,B,R1,R2,and R3)were identified,suggesting a departure from concerted evolution.A combination of general criteria and variations in highly conserved regions were employed to detect *** results pinpointed Type A sequences as potential pseudogenes due to significant sequence variations and deviations in secondary structure within highly conserved *** types(Type R1,R2,and R3)were identified as recombinants between Type A and B sequences,with simple crossing over and gene conversion as the most likely recombination *** findings not only contribute to rRNA pseudogene identification but also shed light on the evolutionary dynamics of rRNA genes in teleost genomes.

关键词： ribosomal RNA tongue sole non-concerted evolution pseudogene crossing over gene conversion

Plasmon-enhanced self-powered GaN/ZnTe core/shell nanopillar array photodetector

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Nano Research 2024年第6期17卷 5569-5577页

作者： Jianqi Dong Dongqi zhang Yi Ma Daotong You Jinping Chen Bin Liu Xingfu Wang zengliang Shi Chunxiang Xu State Key Laboratory of Digital Medical Engineering School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials National Laboratory of Solid State MicrostructuresSchool of Electronic Science and EngineeringNanjing UniversityNanjing 210093China Institute of Photonics Technology Jinan UniversityGuangzhou 510632China Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices Institute of SemiconductorsSouth China Normal UniversityGuangzhou 510631China

Nanostructure photodetectors,as the core component of optoelectronic devices,are mainly focused on the precise preparation of mixed-component nano-heterostructures and the realization of zero power consumption ***,we successfully fabricated n-GaN/p-ZnTe core/shell nanopillar array and realized self-power ultraviolet/violet *** radial heterojunction nanodevice reveals high light-dark current ratio of 104 at 0 V bias,indicating effective carriers’*** more,by integrating plasmonic effect,the responsivity and detectivity of the Au nanoparticles decorated device are increased from 3.85 to 148.83 mA/W and 4.45×1011 to 2.33×1012 Jones under 325 nm UV light *** the rise and the fall time are decreased 1.3 times and 6.8 times under 520 nm visible light irradiation at 0 V *** high photocurrent gain is derived from that the oscillating high-energy hot electrons in Au nanoparticles spontaneously inject into the ZnTe conduction band to involve the photodetection *** work presents an effective route to prepare high-performance self-power photodetector and provides a promising blueprint to realize different functional photoelectronic devices based on core/shell nanostructure.

关键词： GaN/ZnTe core/shell nanopillar array self-power ultraviolet/visible photodetector plasmonic effect

Growth potential of human hepatocarcinoma cells in the liver of neonatal immunocompetent mice and its relation to immunological tolerance

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Progress in Natural Science:Materials International 2009年第6期19卷 705-712页

作者： Ze Wang a, zengliang Baia, Hui zhang b, Tianxiao Huana, Juan Li a, Xiumin Du a, Jingping zhang a a Laboratory for Developmental Immunology, School of Life Science, Shandong University, Jinan 250100, China b China Rural Technology Development Center, Beijing 100045, China [a]Laboratory for Developmental Immunology School of Life Science Shandong University Jinan 250100 China [b]China Rural Technology Development Center Beijing 100045 China

To determine the pathological behavior of human hepatocarcinoma cells in the liver microenvironment of neonatal non-immunode-ficient mice, three human hepatocarcinoma cell lines (Bel7402, HepG2, and SK-Hep-1), traced by DiI, were transplanted into the intrahepatic or subcutaneous tissue of neonatal and adult Kunming mice. Histopathological observations showed that cells in the adult liver induced a severe immune response as early as the second day after the implantation, while the subcutaneous neoplasm underwent extensive necrosis by the end of the study. Only the cells injected into the neonatal liver underwent a delayed immunologic rejection in the organ microenvironment. These cells retained recognizable tumor features over the first seven days, and displayed an intrahepatic invasive pattern. The expression of tumor markers including alpha-fetoprotein and survivin was maintained. The quantitative ELISA for the expression patterns of IL-2 and IL-10 also confirmed that the intrahepatic immunity was non-susceptive during this period. The high serum alpha-fetoprotein level was inversely correlated with the change in immune response. Our study provided a bio-system for the research of immune responses to xenografts in the liver.

关键词： Human hepatocarcinoma cell Immunologic rejection Liver microenvironment Neonatal mice Xenograft

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带孔障碍物对管道中可燃气体爆炸特性的影响

化工学报 2019年第11期70卷 4497-4503页

作者：张增亮王昕王昊平青岛科技大学环境与安全工程学院

以甲烷为代表性气体,研究了在10%浓度甲烷的闭口管道中设置不同孔型、不同尺寸的带孔障碍物对可燃气体爆炸火焰和压力传播的影响。研究发现:设置障碍物隔板时,爆炸超压在穿过障碍物前缓慢增长,并受障碍物影响继续增大,在到达盲板前快速... 详细信息

以甲烷为代表性气体,研究了在10%浓度甲烷的闭口管道中设置不同孔型、不同尺寸的带孔障碍物对可燃气体爆炸火焰和压力传播的影响。研究发现:设置障碍物隔板时,爆炸超压在穿过障碍物前缓慢增长,并受障碍物影响继续增大,在到达盲板前快速降低。火焰传播速度先缓慢增加,并在通过障碍物隔板前下降,在穿过开孔后急剧上升至最大值。随着障碍物隔板的开孔面积减小,其造成的气流喷射作用会明显增强,负压抽吸作用造成的影响增大,会导致障碍物前后超压分布更加不均匀,在障碍物隔板前的火焰传播速度下降幅度增加。同阻塞率条件下,最大超压和火焰传播速度均受到不同孔型的影响,火焰在穿过带孔障碍物隔板时,圆形开孔相对方形开孔和正三角形开孔更符合火焰球形发展规律,正三角形孔内切圆比方形孔小,火焰受到的影响更大,湍流更加明显,导致火焰速度和压力上升更加明显。不同孔型的最大超压关系为P三角孔>P方孔>P圆孔>P空载管道,火焰传播速度关系为v三角孔>v方孔>v圆孔>v空载管道。

关键词：爆炸甲烷火焰传播速度超压障碍物动力学

One-dimensional core/shell radial heterojunction with cascade type-II energyband alignment for enhanced broadband photodetection

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Light(Advanced Manufacturing) 2024年第3期5卷 130-141页

作者： Yi Ma Chunxiang Xu Mengyang Wu Fumeng zhang Xiaoxuan Wang Jianqi Dong Qiannan Cui zengliang Shi State Key Laboratory of Digital Medical Engineering School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096JiangsuChina

Constructing a one-dimensional(1D)core/shell heterostructure is a rational and efficient way to integrate multiple functional materials into a single device,in which a distinct and reliable interface and suitable energy-band alignment play important roles in optoelectronic ***,using a typical magnetron sputtering system,we constructed a 1D ZnO/CdS/CdTe core/shell nanorod arrays radial heterojunction with a well-designed cascade type-II energy band alignment and improved the broadband photodetector(PD)*** well-formed shell layers compensated for the defect states on the ZnO surface and extended the photoresponse range from ultraviolet to visible and ***,reliable and distinct heterointerfaces with a cascade type-II energy band alignment can guarantee more stable carrier migration and reduce energy loss,promoting effective photogenerated charge carrier separation and resulting in an enhanced *** optimised 1D ZnO/CdS/CdTe core/shell heterojunction PD exhibited a fast photoresponse at 0 V bias with high responsivity and *** results provide an important reference for the rational design and controllable synthesis of multifunctional optoelectronic nanodevices.

关键词： Magnetron sputtering ZnO/CdS/CdTe core/shell Radial heterojunction Type-II energy band Broadband photodetector

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湿式离合器执行机构电液控制仿真

机械传动 2015年第3期39卷 120-125页

作者：张增良北华航天工业学院河北文安065000

针对湿式离合器执行机构非线性强、时间延时及控制精度较低等问题,以某汽车自动变速器中湿式离合器的执行机构为研究对象,结合湿式离合器工作特点及控制策略要求,建立一种湿式离合器执行机构电液控制模型,并通过Matlab/Simulink软件进... 详细信息

针对湿式离合器执行机构非线性强、时间延时及控制精度较低等问题,以某汽车自动变速器中湿式离合器的执行机构为研究对象,结合湿式离合器工作特点及控制策略要求,建立一种湿式离合器执行机构电液控制模型,并通过Matlab/Simulink软件进行仿真。研究结果表明,在充电阶段,电动液压阀柱塞、离合器位移,离合器流量首先达到正向最大值,随后逐渐减小直至趋于稳定;在放电阶段,电动液压阀柱塞、离合器位移,离合器流量首先达到负向最大值,随后逐渐增大直至趋于稳定,此外其整体变化趋势与输入电流一致;不同时刻,平均延迟时间不同,延迟时间会降低控制系统的控制精度;不同控制器及预测控制策略对应控制精度不同。

关键词：湿式离合器执行机构电液控制仿真

航空发动机叶片铸造成型缺陷修复过程中温度场仿真分析

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铸造技术 2015年第2期36卷 459-460,487页

作者：张增良北华航天工业学院河北廊坊065000

采用激光熔覆技术对涡轮发动机叶片铸造缺陷进行修复,在其表面熔覆了一层镍基合金粉末,利用ansys模拟了最佳工艺参数下熔覆过程中温度场分布情况。结果表明:激光熔覆过程中在初始和结束两个阶段温度会快速上升,升温速率达到104K/s,熔池... 详细信息

采用激光熔覆技术对涡轮发动机叶片铸造缺陷进行修复,在其表面熔覆了一层镍基合金粉末,利用ansys模拟了最佳工艺参数下熔覆过程中温度场分布情况。结果表明:激光熔覆过程中在初始和结束两个阶段温度会快速上升,升温速率达到104K/s,熔池深度也显著增加;温度场达到准稳态所需时间在1 s左右,准稳态下各节点热循环曲线非常类似,只是开始时间不同;在准稳态下虽然熔池深度和最高温度都有所增加,但是变化不大。

关键词：激光熔覆铸造缺陷 ansys 温度场

Qingre Lishi Tuihuang therapy for acute icteric hepatitis B: A systematic review

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Journal of Traditional Chinese Medical Sciences 2017年第2期4卷 95-105页

作者： Zisong Wang Xueqian Wang Jiajie Zhu Fafeng Cheng Haiqiang Yao Zheng Yang zengliang zhang Qingguo wang Beijing University of Chinese Medicine Beijing 100029China Department of Gastroenterology Wangjing HospitalChina Academy of Traditional Chinese MedicineBeijing 100102China Traditional Chinese Medicine College Inner Mongolia Medical UniversityHohhot 010110China

Objective:To assess the efficacy of Qingre Lishi Tuihuang therapy (QLTT) for acute icteric hepatitis B ***:Eight electronic databases were searched from inception to December 2016 with no language restrictions for reports of randomized controlled trials evaluating the effect of QLTT treating acute icteric hepatitis *** researchers independently extracted detailed data and assessed methodological *** 5.3.0 software was used to analyze the ***:A total of 13 randomized controlled trials involving 2238 participants were included in this *** methodological quality was generally *** results indicated that supplemented Yinchenhao decoction combined with non-specific treatments was more effective in improving the cure rate (risk ratio =1.80;95% CI 1.21-2.68) and reducing the serum levels of total bilirubin (mean difference =-29.74;95% CI-31.91 to-27.57) and aspartate *** self-made prescriptions conforming to QLTT plus non-specific treatments had beneficial effect for acute icteric hepatitis B in curing this disease (risk ratio =1.48;95% CI 1.27-1.73),as well as for negative seroconversion of HBeAg (risk ratio =1.39;95% CI 1.11-1.74).Supplemented Yinchenhao decoction plus non-specific treatments was more effective than other self-made prescriptions conforming to QLTT in reducing serum total bilirubin ***:Qingre Lishi Tuihuang therapy appears to improve effect based on non-specific treatments for the treatment of acute icteric hepatitis ***,it is premature to draw confirmative conclusions,owing to the poor methodological quality and high clinical heterogeneity of the included *** well-designed clinical randomized controlled trials with large sample sizes should be undertaken.

关键词： Qingre Lishi Tuihuang therapy Acute icteric hepatitis B Systematic review Traditional Chinese medicine