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Experimental technique based on delay phase of PZT vibrator and flow-field of PZT-driven dual synthetic jets actuator

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Experimental technique based on delay phase of PZT vibrator ...

2011年全国压电和声波理论及器件应用研讨会

作者： Zhen-bing LUO~* xiong DENG lin WANG Zhi-xun XIA College of Aerospace and Material Engineering,National University of Defense Technology,Changsha 410073

＜正＞There is a delay phase angle between the displacement signal and voltage signal of PZT-driven *** higher the driving frequency,the larger delay phase angle of the PZT vibrator will *** on the delay phase angle o... 详细信息

关键词： Experimental technique Delay phase PZT vibrator Flow-field Dual synthetic jet actuator

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铝胁迫对水稻膜脂组分和含量的影响

植物生理学报 2016年第4期52卷 461-470页

作者：王鑫月张梅娟熊炳霖殷俐娜王仕稳邓西平中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室陕西杨陵712100 中国科学院大学北京100049 西北农林科技大学水土保持研究所陕西杨陵712100

以‘日本晴’水稻为试验材料,研究铝胁迫对水稻幼苗生长的影响,及铝胁迫下其根系和功能叶片中脂质含量及组分的变化。结果表明Al处理显著抑制了水稻根尖的伸长和生长,降低了植株的生物量以及叶绿素含量。铝胁迫后,半乳糖脂含量变化显著... 详细信息

以‘日本晴’水稻为试验材料,研究铝胁迫对水稻幼苗生长的影响,及铝胁迫下其根系和功能叶片中脂质含量及组分的变化。结果表明Al处理显著抑制了水稻根尖的伸长和生长,降低了植株的生物量以及叶绿素含量。铝胁迫后,半乳糖脂含量变化显著,根和叶中的单半乳糖甘油二酯(MGDG)和双半乳糖甘油二酯(DGDG)含量均降低;而磷脂(PL)及硫代异鼠李糖甘油二酯(SQDG)的含量在根中表现为上升,在叶中则显著降低。此外,根和叶中的脂肪酸不饱和度均降低。由此可见,铝胁迫引起水稻膜脂组分和含量的变化,这种变化可能是铝抑制植物生长的重要原因之一。

关键词：水稻铝胁迫细胞膜膜脂

液相色谱-质谱法测定金银花中噻菌灵的残留量

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国际中医中药杂志 2018年第3期40卷 258-261页

作者：朱军尚兵丁雪茹熊琳陈琴华湖北医药学院附属东风医院药学部十堰442000

目的建立液相色谱-质谱法（liquid chromatography-mass spectrometry, LC-MS/MS）测定金银花中噻菌灵残留量的方法。方法样品采用乙酸乙酯提取，使用LC-MS/MS法测定金银花中噻菌灵含量，在正离子模式下，采用选择离子监测方式，其监... 详细信息

目的建立液相色谱-质谱法（liquid chromatography-mass spectrometry, LC-MS/MS）测定金银花中噻菌灵残留量的方法。方法样品采用乙酸乙酯提取，使用LC-MS/MS法测定金银花中噻菌灵含量，在正离子模式下，采用选择离子监测方式，其监测离子对为m/z 202→175。结果在0.1×10-5～2×10-5 mg范围内噻菌灵获得良好线性关系（r＝0.999 5），检测限为10.0 ng/ml，平均回收率为93.70%，RSD为2.53%。结论所建立的LC-MS/MS法快速灵敏，适用于金银花中噻菌灵残留量的检测。

关键词：金银花液相色谱-质谱法噻菌灵

Optical Interface Phonon in Thin Layer Inserted Quantum Well Structure

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Chinese Physics Letters 1996年第10期13卷 768-771页

作者： GU bing-lin DUAN Wen-hui xiong Shi-ying Department of Physics Tsinghua UniversityBeijing 100084

The dependence of optical interface phonon on structure was demonstrated for thin layer inserted GaAlAs quantum well structures. It was found that the dispersion is sensitive to the Al-content of the inserted layer but almost independent of the position of the layer. The results showed that phonon modes can be modulated by adjusting the well parameters, which is useful for some device applications.

关键词： Quantum Insert dispersion

干旱胁迫下氮肥对玉米叶片衰老影响及与碳氮平衡的关系

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玉米科学 2016年第3期24卷 138-146页

作者：熊炳霖王仕稳王鑫月陈道钳殷俐娜邓西平中科院水利部水土保持研究所/黄土高原土壤侵蚀与旱地农业国家重点实验室陕西杨凌712100 中国科学院大学北京100049 西北农林科技大学水土保持研究所陕西杨凌712100

以玉米品种兴民18为研究材料,设置高氮和低氮两个氮水平,通过盆栽人工控水的方式进行干旱和复水处理,分析干旱胁迫下氮肥对玉米叶片衰老和叶片碳氮平衡的影响,研究碳氮平衡和叶片衰老及抗旱性的关系。研究结果表明,在干旱胁迫下,高氮处... 详细信息

以玉米品种兴民18为研究材料,设置高氮和低氮两个氮水平,通过盆栽人工控水的方式进行干旱和复水处理,分析干旱胁迫下氮肥对玉米叶片衰老和叶片碳氮平衡的影响,研究碳氮平衡和叶片衰老及抗旱性的关系。研究结果表明,在干旱胁迫下,高氮处理下增加了玉米对干旱的敏感性,加快了干旱胁迫下玉米叶片的衰老进程;干旱胁迫下碳氮比显著升高,说明碳氮平衡可能参与了干旱诱导的叶片衰老调控。在干旱胁迫及复水条件下,干旱条件下高氮处理的碳氮比相较于低氮处理增加幅度更大,碳氮平衡受干旱破坏程度更严重,说明高氮并不能增加干旱胁迫后下部衰老叶片中的氮浓度,也不能缓解干旱胁迫引起的碳氮失衡。干旱胁迫下高氮导致碳氮失衡加剧,可能是高氮增加了玉米对干旱的敏感性和叶片加速衰老的原因之一。

关键词：玉米氮肥干旱叶片衰老碳氮平衡

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World Journal of Clinical Cases 2025年第6期13卷 24-29页

作者： Wen-Jin Yuan Yi-Juan Zheng bing-Rong Zhang Yi-Jie lin You Li Yan-Yan Qiu Xue-Ping Yu Department of Infection Disease Clinical Medical Research Center for Bacterial and Fungal Infectious Diseases of Fujian provinceFujian Medical University Affiliated First Quanzhou HospitalQuanzhou 362000Fujian ProvinceChina

BACKGROUND Hydroxyurea,an antimetabolite,is frequently prescribed for various hemato-logical disorders,and its common side effects include gastrointestinal problems,cutaneous or mucosal lesions and pyrexia/*** SUMMARY This study reports the case of a 67-year-old woman who developed recurrent abdominal pain after 10 years of continuous hydroxyurea therapy for primary *** revealed an ileocecal *** discontinuing hydroxyurea therapy for 6 months,follow-up colonoscopy showed a significant reduction in the *** We consider cecal ulcers as a rare complication of hydroxyurea therapy which typically resolves upon stopping the drug.

关键词： Hydroxyurea Ulcer Abdominal pain Thrombocythemia Colonoscopy Case report

Vortical structures and density fluctuations analysis of supersonic forward-facing step controlled by self-sustaining dual synthetic jets

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Acta Mechanica Sinica 2020年第6期36卷 1215-1227,I0002页

作者： Qiang Liu Zhen-bing Luo xiong Deng Yan Zhou lin Wang Pan Cheng College of Aerospace Science and Engineering National University of Defense TechnologyChangsha410073China

Shock wave/boundary layer interaction(SWBLI)is still one of the unresolved bottlenecks that restrict the development of more advanced flight *** forward-facing step(FFS),an extreme case of compression ramp,often occurs severe SWBLIs with a large separation *** this paper,experimental investigations on vortical structures and density fluctuations characteristics of supersonic FFS controlled by self-sustaining dual synthetic jets(SDSJ)are carried out in a Mach number 2.95 wind *** spatial–temporal resolution flowfield images of FFS without/with active flow control are captured by adopting nano-particle-based planar laser scattering *** control effects of the distance between the actuator and the step are mainly *** paper finds that the SDSJ can effectively change the feature of flowfield,eliminate the separation shock and the reattachment shock,compel the original shock induced by the step leading edge to distort and reduce its intensity *** fluctuations analysis demonstrates that the whole flows seem to move upstream with the increase of distance(dS-J).Discrete Fourier transformation spectrums results reveal that the fluctuations are mainly located in the low-frequency region at ***-frequency components and frequency bandwidth increase slightly after the SDSJ are applied.

关键词： Forward-facing step Self-sustaining dual synthetic jets Flow control Fine structures Density fluctuations

Deficiencies of streamline tracing techniques for designing hypersonic inlets and potential solutions

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Science China(Technological Sciences) 2020年第3期63卷 488-495页

作者： xiong bing FAN XiaoQiang WANG Yi College of Aerospace Science Engineering National University of Defense Technology

This work focuses on streamline tracing techniques for designing hypersonic inlets, and two deficiencies were ***, constriction ratios of stream-traced inlets are unpredictable and uncontrollable, which may affect the integration with airframes and combustors. Secondly, stream-traced inlets cannot exactly inherit properties from a basic flowfield through which they are traced. Then flow mechanisms underneath these phenomena were clarified. It was made clearly that properties of flow tubes captured by an inlet are what essentially determines constriction ratios as well as performances of inlets. Based on flow mechanisms, the method of calculating along streamlines(MCS) was proposed, which makes it possible to evaluate inlet performances directly. At last, optimization design methodologies were introduced to make inlet constriction ratios controllable,and simultaneously improve inlet performances as much as possible.

关键词： hypersonic inlet streamline tracing optimization methodology

Convex-up Style of Deformation within Grabens in Regions of Incomplete Crossing Conjugate Normal Faults: A Numerical Simulation Investigation and Case Study

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Journal of Earth Science 2024年第3期35卷 839-849页

作者： Zheng Li Kai Wang xiong xiong bing Zhou School of Geophysics and Geomatics China University of GeosciencesWuhan 430074China State Key Laboratory of Geodesy and Earth’s Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China Department of Earth Sicences Khalifa UniversityAbu DhabiUnited Arab Emirates

Crossing conjugate normal faults(CCNFs)are extensively developed in many hydrocarbon-producing basins,generally existing in the form of incomplete ***,the effect of the non-conjugate zone of the CCNFs on the conjugate relay zone post late tectonic action has not been previously *** use 3D elastic-plastic modeling to investigate the influence of incomplete(i.e.,partially intersecting)CCNFs on the pattern of deformation of strata in the intersection region.A series of model simulations were performed to examine the effects of horizontal tectonic extension,fault size,and fault depth on the deformation of conjugate relay zones of incomplete *** analyses yielded the following results.(1)The model of incomplete conjugation predicts a convex-up style of deformation in the conjugate graben region superimposed on overall subsidence under applied horizontal tectonic extension.(2)The degree of convex-up deformation of the conjugate graben depends on the influence of the non-conjugate zone on the conjugate relay zone,which varies with the amount of horizontal tectonic extension,fault size,and fault burial depth.(3)Our results indicate that incomplete CCNFs can form convex-up deformation,similar to that in the Nanpu Sag area and provide a sound understanding of hydrocarbon migration and accumulation.

关键词： incomplete conjugate normal fault conjugate graben convex-up deformation hydrocarbons Nanpu Sag tectonics.