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Consecutive narrow and broad quasi-periodic fast-propagating wave trains associated with a flare

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 200-211页

作者： xinping zhou Yuandeng Shen Chengrui zhou Zehao Tang Ahmed Ahmed Ibrahim College of Physics and Electronic Engineering Sichuan Normal UniversityChengdu 610068China State Key Laboratory of Space Weather Chinese Academy of SciencesBeijing 100190China Yunnan Observatories Chinese Academy of SciencesKunming 650216China Department of Physics and Astronomy College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia

The excitation mechanism of coronal quasi-period fast-propagating(QFP)wave trains remains *** Atmospheric Imaging Assembly onboard the Solar Dynamics Observatory observations,we study a narrow and a broad QFP wave trains excited one after another during the successive eruptions of filaments hosted within a fan-spine magnetic system on October 20,*** consecutive occurrence of these two types of QFP wave trains in the same event provides an excellent opportunity to explore their excitation mechanisms and compare their physical *** observational results reveal that narrow and broad QFP wave trains exhibit distinct speeds,periods,energy fluxes,and relative intensity amplitudes,although originating from the same active region and being associated with the same GOES C2.9 *** wavelet analysis,we find that the narrow QFP wave train shares a similar period with the flare itself,suggesting its possible excitation through the pulsed energy release in the magnetic reconnection process that generated the accompanying *** the other hand,the broad QFP wave train appears to be associated with the energy pulses released by the successive expansion and unwinding of filament ***,it is plausible that the broad QFP wave train was also excited by the sequential stretching of closed magnetic field lines driven by the erupting *** findings shed light on the different excitation mechanisms and origins of the QFP wave trains.

关键词： narrow wave excitation

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China-Nicaragua:dos años después

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今日中国（西文版） 2024年第2期 37-38页

作者： zhou xinping 不详

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液滴撞击柔性基底研究进展

力学学报 2024年第6期56卷 1529-1539页

作者：许勇琪彭泽瑞周新平华中科技大学机械科学与工程学院武汉430074 华中科技大学航空航天学院武汉430074 华中科技大学智能制造装备与技术全国重点实验室武汉430074

液滴撞击固体基底现象广泛存在于自然界、日常生活及工业生产中.在多数液滴撞击场景中,固体基底可以近似地视为理想刚性基底.然而在一些场景中,具有较小杨氏模量或者几何结构为薄壁或细长类的固体基底在受到液滴撞击后会产生明显的变形... 详细信息

液滴撞击固体基底现象广泛存在于自然界、日常生活及工业生产中.在多数液滴撞击场景中,固体基底可以近似地视为理想刚性基底.然而在一些场景中,具有较小杨氏模量或者几何结构为薄壁或细长类的固体基底在受到液滴撞击后会产生明显的变形,而固体基底的形变反过来又会影响液滴的动力学行为.相比于刚性基底情况,液滴与柔性基底的耦合作用可能会引发新的动力学现象和机制.因此,柔性基底液滴撞击动力学的研究很有意义,也成为一些学者当前关注的研究焦点之一.根据几何结构的特点,柔性基底可以分为柔性体、柔性面和柔性杆3种类型.文章据此分类介绍与这3类柔性基底相关的液滴撞击动力学的研究进展.柔性基底的可变形性是导致其液滴动力学与刚性基底液滴动力学存在差异的根本原因.现有的研究表明,基底柔性对液滴撞击的接触时间、最大铺展因子、气泡捕获、回弹和溅射等方面均存在着影响,其中关于接触时间及溅射方面的结论可能为制造防水、抗冰和防溅射材料提供新思路.

关键词：液滴撞击柔性基底流固耦合基底形变杨氏模量

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基于超声技术的关节用水凝胶制备与应用

粘接 2024年第1期51卷 58-60页

作者：周辛萍西宁市第二人民医院青海西宁810000

制备壳聚糖基水凝胶用于关节损伤治疗,为进一步检测关节修复诊断效果,使用高频超声检测关节修复。通过高频超声检查1248个位置,包括858个手关节和390个肌腱,以评估壳聚糖基水凝胶治疗效果及是否存在骨侵蚀、骨髓水肿、滑膜增生、关节渗... 详细信息

制备壳聚糖基水凝胶用于关节损伤治疗,为进一步检测关节修复诊断效果,使用高频超声检测关节修复。通过高频超声检查1248个位置,包括858个手关节和390个肌腱,以评估壳聚糖基水凝胶治疗效果及是否存在骨侵蚀、骨髓水肿、滑膜增生、关节渗出、肌腱炎和腱鞘水肿。研究结果表明,壳聚糖基水凝胶表面及内部具有较好的孔隙结构,方便吸收体液,并进一步促进骨关节损伤修复,且高频超声可检测出肌腱鞘水肿,有效检测和诊断关节修复状况。研究结果可为关节修复诊断检测提供参考。

关键词：超声技术关节用胶诊断检测水凝胶

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多点射频微创治疗三叉神经痛的临床分析

锦州医科大学学报 2024年第2期45卷 71-74页

作者：周新平朱江焦作市第五人民医院神经外科河南焦作454002

目的探讨多点射频微创治疗对三叉神经痛患者疼痛及复发的影响。方法选取2021年1月至2023年1月焦作市第五人民医院收治的150例三叉神经痛患者,采用随机数字表法将其两组,每组各75例,对照组:药物治疗,观察组:多点射频微创治疗,比较两组患... 详细信息

目的探讨多点射频微创治疗对三叉神经痛患者疼痛及复发的影响。方法选取2021年1月至2023年1月焦作市第五人民医院收治的150例三叉神经痛患者,采用随机数字表法将其两组,每组各75例,对照组:药物治疗,观察组:多点射频微创治疗,比较两组患者的疼痛度、复发率、术后并发症、氧化应激指标水平及炎症因子水平。结果两组患者治疗前疼痛度评分、氧化应激指标水平、炎症因子水平无明显差异(P>0.05),经治疗后,两组患者疼痛度评分、炎性因子水平、NO水平均较治疗前降低,且观察组患者更低,GSH-Px、SOD水平均升高,且观察组患者更高(P0.05)。结论多点射频微创治疗三叉神经痛,可有效减轻其疼痛度,且具有较高的安全性,值得推广。

关键词：多点射频微创三叉神经痛疼痛炎症因子

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水雾和水幕复合喷头红外降温特性研究

机械工程学报 2024年第8期60卷 320-328页

作者：刘银水王振朱森林孙玲魏强周新平崔岩吴德发华中科技大学机械科学与工程学院武汉430074 中国舰船研究设计中心武汉430064

提出采用水雾和水幕复合喷淋技术方案,解决传统水幕喷淋红外隐身中,水幕达到一定厚度难以再通过增加水量提高降温隐身效果的问题。利用水雾颗粒吸收、散射红外波,同时利用水幕降温衰减目标物体红外辐射强度,通过两者的双重作用进一步降... 详细信息

提出采用水雾和水幕复合喷淋技术方案,解决传统水幕喷淋红外隐身中,水幕达到一定厚度难以再通过增加水量提高降温隐身效果的问题。利用水雾颗粒吸收、散射红外波,同时利用水幕降温衰减目标物体红外辐射强度,通过两者的双重作用进一步降低目标的红外特性从而提高隐身性能。通过调节喷头输入压力、流量以及功率参数对两种喷头进行试验分析,探究不同动力参数下复合喷头的红外降温特性以及水雾的增益效应。试验结果表明,随着压力增大,复合喷淋红外降温时长相比单一水幕喷头缩短了41.6%、39.7%、56.9%;在相同流量下,复合喷头比水幕喷头红外降温时长缩短了47.1%;在同等功率下,复合喷头比水幕喷头红外降温时长缩短了30.5%。研究成果为采用水介质的红外降温系统设计提供了新的方向。

关键词：复合喷头水幕水雾红外降温增益

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Characteristics and exploration targets of Chang 7 shale oil in Triassic Yanchang Formation, Ordos Basin, NW China

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石油勘探与开发:英文版 2023年第4期50卷 878-893页

作者： GUO Qiheng LI Shixiang JIN Zhenkui zhou xinping LIU Chenglin College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Research Institute of Exploration and Development PetroChina Changqing Oilfield CompanyXi’an 710018China

The geological characteristics and enrichment laws of the shale oil in the third submember of the seventh member of Triassic Yanchang Formation(Chang 7_(3)) in the Ordos Basin were analyzed by using the information of core observations, experiments and logging, and then the exploration potential and orientation of the Chang 7_(3) shale oil were discussed. The research findings are obtained in three aspects. First, two types of shale oil, i.e. migratory-retained and retained, are recognized in Chang 7_(3). The former is slightly better than the latter in quality. The migratory-retained shale oil reservoir is featured with the frequent interbedding and overlapping of silty-sandy laminae caused by sandy debris flow and low-density turbidity current and semi-deep-deep lacustrine organic-rich shale laminae. The retained shale oil reservoir is composed of black shale with frequent occurrence of bedding and micro-laminae. Second, high-quality source rocks provide a large quantity of hydrocarbon-rich high-quality fluids with high potential energy. The source-reservoir pressure difference provides power for oil accumulation in thin interbeds of organic-poor sandstones with good seepage conditions and in felsic lamina, tuffaceous lamina and bedding fractures in shales. Hydrocarbon generation-induced fractures, bedding fractures and microfractures provide high-speed pathways for oil micro-migration. Frequent sandstone interlayers and felsic laminae provide a good space for large-scale hydrocarbon accumulation, and also effectively improve the hydrocarbon movability. Third, sand-rich areas around the depression are the main targets for exploring migratory-retained shale oil. Mature deep depression areas are the main targets for exploring retained oil with medium to high maturity. Theoretical research and field application of in-situ conversion in low-mature deep depression areas are the main technical orientations for exploring retained shale oil with low to medium maturity.

关键词： Ordos Basin Triassic Yanchang Formation Chang 7_(3)submember shale oil migratory-retained retained exploration target

Sedimentary characteristics and model of gravity flow channel-lobe complex in a depression lake basin:A case study of Chang 7 Member of Triassic Yanchang Formation in southwestern Ordos Basin,NW China

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Petroleum Exploration and Development 2022年第6期49卷 1323-1338页

作者： LYU Qiqi FU Jinhua LUO Shunshe LI Shixiang zhou xinping PU Yuxin YAN Hongguo School of Geosciences Yangtze UniversityWuhan 430100China National Engineering Laboratory for Exploration and Development of Low Permeability Oil&Gas Fields Xi’an 710018China Exploration and Development Research Institute of Changqing Oilfield Branch Company Ltd. PetroChinaXi’an 710018China

To reveal the development characteristics and distribution of gravity flow sedimentary system under micro-paleogeomorphologic units of the Chang 7 Member of Triassic Yanchang Formation in the southwestern Ordos Basin,on the basis of the restoration of the paleogeomorphological form of the Chang 7 depositional period by the impression method,each micro-paleogeomorphologic unit was depicted in-depth,and the characteristics and development models of gravity flow deposits in the study area were studied in combination with outcrop,core,mud logging and log *** results show that:(1)The paleogeomorphology in the Chang 7 depositional period was an asymmetrical depression,wide and gentle in the northeast and steep and narrow in the *** sub-paleogeomorphologic units were developed in the basin,including gentle paleo-slope,paleo-slope and paleo-depression,and they can be further subdivided into eight micro-paleogeomorphologic units:bulge,groove,slope break belt,plain of lake bottom,deep depression of lake bottom,paleo-channel,paleo-ridge of lake bottom,and paleo-uplift of lake bottom.(2)There are 9 types of lithofacies and 4 types of lithofacies assemblages of Chang 7 *** to lithofacies composition and lithofacies vertical combination,the gravity flow deposit is further divided into 5 types of microfacies:restricted channel,unrestricted channel,natural levee,inter-channel,lobe.(3)Paleogeomorphology plays an important role in controlling sediment source direction,type and spatial distribution of sedimentary microfacies,genetic types and distribution of sand bodies in Chang 7 Member.

关键词： gravity flow deposit slope break belt paleogeomorphology channel-lobe complex Triassic Yanchang Formation Ordos Basin depression lake basin

Natural polysaccharide-based smart CXCR4-targeted nano-system for magnified liver fibrosis therapy

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Chinese Chemical Letters 2024年第2期35卷 341-346页

作者： Liqiong Sun xinping Luo Chenxi zhou Zhanwei zhou Minjie Sun College of Horticulture Nanjing Agricultural UniversityNanjing 210095China NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients State Key Laboratory of Natural MedicinesDepartment of PharmaceuticsChina Pharmaceutical UniversityNanjing 210009China

Activated hepatic stellate cells(aHSCs),the main source of extracellular matrix deposition,are key targets in liver ***,no effective drug specific to aHSCs has been clinically applied due to poor drug delivery ***,we designed a CXC chemokine receptor 4(CXCR4)-targeted reactive oxygen species(ROS)-responsive platform AMD-Dex-ROS-responsive-sorafenib(ARS)based on natural polysaccharide and thioctic acid frame,which can deliver anti-fibrosis drug represented by sorafenib specifically to aHSCs on account of CXCR4 over-expression on aHSCs,and smartly disassemble via ROS-responsive thioketal rupture relying on high intracellular ROS in HSCs,realized on-demand drug release and effective liver fibrosis ***,in this platform,the CXCR4 antagonist AMD3100 not only enhanced aHSCs targeting efficiency of sorafenib but also effectively magnified the aHSCs elimination of sorafenib by blocking stroma cell derived factor-1(SDF-1)/CXCR4-induced aHSCs protection,resulting in synergistic anti-fibrosis *** platform provided a new approach for drug delivery system design and liver fibrosis treatment.

关键词： Nanoparticle CXCR4 antagonism ROS-responsive Hepatic stellate cells Liver fibrosis