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Single-crystal star-like zinc oxide: synthesis, characterization and growth mechanism

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Rare Metals 2006年第z2期25卷 193-199页

作者： WANG Qingxiao YOU Liping Zhang Xinzheng WANG Rongming LV yuzhen guo Lin School of Physics Beijing University Beijing 100871 China School of Physics Beijing University Beijing 100871 China School of Physics Beijing University Beijing 100871 China School of Science Beijing University of Aeronautics and Astronautics Beijing 100083 China 　 School of Materials Science and Technology Beijing University of Aeronautics and Astronautics Beijing 100083 China

A novel star-like single-crystal ZnO structure was synthesized by a simple solvothermal method. The as-prepared products were characterized by XRD, SEM and TEM. The star-like ZnO, which shows sixfold symmetry, was constructed by six uniform arms distributing symmetrically around the [0001] zone axis. It is also found that the arms are not perpendicular to the [0001] zone axis and each arm is grown at a certain angle with the [0001] direction. CBED pattern and corresponding simulation demonstrate that the convex part of the star-like ZnO is O-terminated (000-1) plane and the concave part is Zn-terminated (0001) plane. H2S plays a crucial role in the synthesis process. The anisotropic growth habit along [0001] and [000-1] results in the formation of star-like structure.

关键词： star-like single-crystal solvothermal method CBED

Temporal and spatial variation of annual mean air temperature in arid and semiarid region in northwest China over a recent 46 year period

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Journal of Arid Land 2010年第2期2卷 87-97页

作者： Chen, ShaoYong Shi, YuanYuan guo, yuzhen Zheng, YanXiang CMA Inst Arid Meteorol Key Lab Arid Climat Changing & Reducing Disaster Key Lab Arid Climat Changing & Reducing Disaster Lanzhou 730020 Peoples R China Meteorol Bur Baiyin Baiyin 730900 Peoples R China

We analyzed the 1961-2006 mean surface air temperature data of 138 stations in China’s northwest arid and semi-arid areas(CNASA),to measure climate change in terms of annual mean air temperature *** used methods of linear regression analysis,multinomial fitting,Empirical Or-thogonal Function(EOF),Rotated Empirical Orthogonal Function(REOF),Mann-Kendall,Glide T-examination,wavelet analysis and power spectrum *** results show that(1) the warming rate of the annual mean air temperature in CNASA was 0.35oC/10a during the 1961-2006 study *** places in the west part of Xinjiang and east part of the Qinghai plateau,which is impacted by the terrain of leeward slope,exhibit smaller increasing ***,the majority of region has shown distinct warming in line with general global warming;(2) The standard deviation of the annual mean temperature distribution is *** south Xinjiang and east Qinghai-south Gansu areas show relatively small standard deviations,but the inter-annual variation in annual mean air temperature in the greater part of the region is high;(3) Inner Mongolia,Shaanxi,Gansu,Ningxia and Tarim Basin are the areas where the temperature changes are most sensitive to the *** degree of uniformity in annual mean air temperature increase is higher in the arid and semi-arid *** the early 1970s,the trend in tempera-ture changed from a decrease to an increase,and there was a marked increase in mean temperature in *** that mean temperature went through a period of rapid *** entire area’s 10 hottest years all occurred in or since the 1990s,and 90% of various sub-districts’ hottest years also occurred after *** process of temperature change appears to have a roughly 5-year and a 10-year cycle;(4) An-nual mean air temperature variation has regional *** Inner Mongolia-Xinjiang and Shaanxi-Gansu-Ningxia-Qinghai areas,the temperature variation in their northern areas was very different fro

关键词： northwest area of China annual mean air temperature climatic warming

家庭参与式综合管理联合个体化护理在NICU早产儿护理中的效果

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中国医药指南 2025年第4期23卷 160-162页

作者：练素斌郭玉珍柯晓婷厦门大学附属妇女儿童医院(厦门市妇幼保健院)新生儿科福建厦门361000

目的探究新生儿重症监护室(NICU)早产儿应用家庭参与式综合管理联合个体化护理的作用。方法将厦门大学附属妇女儿童医院自2022年12月至2023年12月收治的200例NICU早产儿纳入研究。采用盲摸双色球法分为观察组、参照组,各100例。参照组... 详细信息

目的探究新生儿重症监护室(NICU)早产儿应用家庭参与式综合管理联合个体化护理的作用。方法将厦门大学附属妇女儿童医院自2022年12月至2023年12月收治的200例NICU早产儿纳入研究。采用盲摸双色球法分为观察组、参照组,各100例。参照组行一般护理,观察组加用家庭参与式综合管理联合个体化护理。比较两组的喂养耐受情况、营养状况水平、体格发育水平及家属育儿胜任能力水平。结果观察组喂养不耐受率低于参照组(P<0.05);干预后,观察组总蛋白、血红蛋白及前白蛋白、头围、体重、身高、育儿效能、育儿满意度均高于参照组(P<0.05)。结论家庭参与式综合管理联合个体化护理能够提高NICU早产儿的喂养耐受情况,改善患者的营养水平及体格发育水平,促进家属的育儿胜任能力提高。

关键词：家庭参与式综合管理早产儿喂养耐受情况营养状况水平体格发育水平育儿胜任能力水平

Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 144-151页

作者： Yunhan Yang Han Jia Tuo Liu yuzhen Yang Jun Yang Key Laboratory of Noise and Vibration Research Institute of AcousticsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Acoustics Institute of AcousticsChinese Academy of SciencesBeijing 100190China

The phenomenon of induced transparency,characterized by a high quality(Q)factor,holds significant importance in the fields of high-precision sensing,energy storage and wave *** transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters,thereby hindering advanced research on high-Q *** we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection *** virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom,we achieve the manipulation of induced transparency in a decoupled,wide-ranging,and elaborate *** the diverse evolutions across the intrinsic parameter space,we show experimentally a counter-intuitive increase in the Q-factor of the transparency window,which is attributed to the enhanced dissipation of the bright ***,a constant group delay at the center frequency is observed accompanying this *** work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon,and paves the way towards applications in programmable acoustic sensors,filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter

The pivotal role of microglia in injury and the prognosis of subarachnoid hemorrhage

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Neural Regeneration Research 2025年第7期20卷 1829-1848页

作者： Wenjing Ning Shi Lv Qian Wang yuzhen Xu Department of Rehabilitation The Second Affiliated Hospital of Shandong First Medical UniversityTaianShandong ProvinceChina Department of Central Laboratory The Affiliated Taian City Central Hospital of Qingdao UniversityTaianShandong ProvinceChina

Subarachnoid hemorrhage leads to a series of pathological changes,including vascular spasm,cellular apoptosis,blood–brain barrier damage,cerebral edema,and white matter ***,which are the key immune cells in the central nervous system,maintain homeostasis in the neural environment,support neurons,mediate apoptosis,participate in immune regulation,and have neuroprotective *** evidence has shown that microglia play a pivotal role in the pathogenesis of subarachnoid hemorrhage and affect the process of injury and the prognosis of subarachnoid ***,microglia play certain neuroprotective roles in the recovery phase of subarachnoid *** approaches aimed at modulating microglia function are believed to attenuate subarachnoid hemorrhage *** provides new targets and ideas for the treatment of subarachnoid ***,an in-depth and comprehensive summary of the role of microglia after subarachnoid hemorrhage is still *** review describes the activation of microglia after subarachnoid hemorrhage and their roles in the pathological processes of vasospasm,neuroinflammation,neuronal apoptosis,blood–brain barrier disruption,cerebral edema,and cerebral white matter *** also discusses the neuroprotective roles of microglia during recovery from subarachnoid hemorrhage and therapeutic advances aimed at modulating microglial function after subarachnoid ***,microglia in subarachnoid hemorrhage are targeted with TLR inhibitors,nuclear factor-κB and STAT3 pathway inhibitors,glycine/tyrosine kinases,NLRP3 signaling pathway inhibitors,Gasdermin D inhibitors,vincristine receptorαreceptor agonists,ferroptosis inhibitors,genetic modification techniques,stem cell therapies,and traditional Chinese ***,most of these are still being evaluated at the laboratory *** clinical studies and data on subarachnoid hemorrhage are required to improve the treatment of subarachnoid hemor

关键词： apoptosis blood–brain barrier brain edema microglia neuroinflammation neuron neuroprotection subarachnoid hemorrhage vasoconstriction white matter injury

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低碳钢在酸雨环境中的腐蚀行为

铸造技术 2014年第10期35卷 2181-2183页

作者：郭玉珍南昌大学江西南昌330031 江西工业贸易职业技术学院江西南昌330038

研究了低碳钢在模拟酸雨环境下的腐蚀行为。结果表明,模拟酸雨环境中,低碳钢表面存在棉絮状和针状两种微观形貌,腐蚀产物主要有γ-FeOOH、α-FeOOH和Fe3O4。低碳钢腐蚀速度先快后慢,并出现两种腐蚀坑。一种为蝶形腐蚀坑,另一种为向基体... 详细信息

研究了低碳钢在模拟酸雨环境下的腐蚀行为。结果表明,模拟酸雨环境中,低碳钢表面存在棉絮状和针状两种微观形貌,腐蚀产物主要有γ-FeOOH、α-FeOOH和Fe3O4。低碳钢腐蚀速度先快后慢,并出现两种腐蚀坑。一种为蝶形腐蚀坑,另一种为向基体延伸的深而窄的腐蚀坑。

关键词：酸雨腐蚀形貌低碳钢

Impact of Burial Dissolution on the Development of Ultradeep Fault-controlled Carbonate Reservoirs:Insights from High-temperature and High-pressure Dissolution Kinetic Simulation

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Acta Geologica Sinica(English Edition) 2025年第1期99卷 228-242页

作者： TAN Xiaolin ZENG Lianbo SHE Min LI Hao MAO Zhe SONG Yichen YAO Yingtao WANG Junpeng LU yuzhen National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China College of Geoscience China University of Petroleum(Beijing)Beijing 102249China PetroChina Hangzhou Institute of Geology Hangzhou 310023China Shenzhen Branch of CNOOC(China)Co. Ltd.Shenzhen 518000China

Burial dissolution is a critical diagenetic process influencing ultra-deep carbonate reservoir development and *** carbonate samples with different internal structures were prepared,and high-temperature and highpressure dissolution kinetic simulations were *** results demonstrate that the intensity of burial dissolution is controlled by temperature and pressure,while tectonic-fluid activity influences the development pattern of burial dissolution,ultimately determining the direction of its differential *** burial dissolution is likely to occur primarily at relatively shallow depths,significantly influencing reservoir formation,preservation,modification,and *** development of faults facilitates the maintenance of the intensity of burial *** maximum intensity of burial dissolution occurs at the tips and overlap zones of faults and intersections of multiple *** larger the scale of the faults,the more conducive it is to the development of burial *** dissolution fosters the formation of fault networks characterized by enhanced reservoir capacity and *** dissolution controlled by episodic tectonic-fluid activity is a plausible explanation for forming the Tarim Basin's ultra-deep fault-controlled“stringbead-like”reservoirs.

关键词： burial dissolution tectonic-fluid ultra-deep carbonate reservoirs high-temperature and high-pressure dissolution kinetic simulation

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生态审美视域下科幻电影中动物形象的嬗变

电影评介 2024年第15期 70-75页

作者：李明杰郭玉真广州理工学院艺术设计学院清华大学美术学院聊城大学传媒技术学院聊城大学影视编导与技术系

文章通过对动物题材科幻电影的发现历史进行梳理,综合运用文本分析和文献研究方法,试图分析推动动物题材科幻电影中动物形象演变的社会实践层面和审美层面的原因。动物题材科幻电影中的动物形象,从初期的人类反抗对象到人类征服对象,再... 详细信息

文章通过对动物题材科幻电影的发现历史进行梳理,综合运用文本分析和文献研究方法,试图分析推动动物题材科幻电影中动物形象演变的社会实践层面和审美层面的原因。动物题材科幻电影中的动物形象,从初期的人类反抗对象到人类征服对象,再到反思人类科技滥用的对象和人类的朋友,这种演变的推动力量在实践层面是因为人类科技进步、生产力提升和人类欲望结合加剧了生态危机出现的频率,在审美层面,是因为从人类中心主义到生态人文主义的转变,促进了生态审美与科幻电影叙事的融合,后人类主义的参与和东方传统的哲学观推动了东方科幻电影站在友情的立场来审视人与动物的关系。本文展示了东方哲学在这一演变中的关键作用,揭示了东方科幻电影在探讨人与自然、人与动物关系中的独特视角和价值。

关键词：生态审美动物形象科幻电影东方哲学

维普期刊数据库博看期刊

腔镜下甲状腺癌根治术的围手术期护理干预措施及实施效果分析

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中国医学文摘(耳鼻咽喉科学) 2023年第4期38卷 195-197页

作者：郭玉贞汶上县人民医院

目的分析、探究腔镜下甲状腺癌根治术采取护理干预的效果及实施价值。方法选取区间2020年1月至2022年1月于本院就诊的甲状腺癌患者研究，总病例数200例，均施行腔镜下甲状腺癌根治术治疗，依据随机数字表法分组，等分为2组，对照组围... 详细信息

目的分析、探究腔镜下甲状腺癌根治术采取护理干预的效果及实施价值。方法选取区间2020年1月至2022年1月于本院就诊的甲状腺癌患者研究，总病例数200例，均施行腔镜下甲状腺癌根治术治疗，依据随机数字表法分组，等分为2组，对照组围手术期运用常规化干预，基于此，试验组运用全面护理干预，对不同护理方法实施效果展开评价，如疼痛程度、认知功能、并发症等。结果 (1)疼痛程度（VAS）：出院时，试验组VAS评分相比之对照组低（P<0.05）；(2)认知功能（MMSE）：术后5d，试验组MMSE评分较对照组高（P<0.05）；(3)并发症：与之对照组比，试验组并发症率更低（P<0.05）；(4)生活质量：随访3个月，试验组情绪功能、社会功能等因子评分均高于对照组（P<0.05）。结论腔镜下甲状腺癌根治术采取全面护理干预效果可观，可降低术后并发症率，减轻疼痛程度与认知功能损伤，优化生活质量，值得借鉴。

关键词：腔镜下甲状腺癌根治术全面护理干预并发症认知功能