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Chinese Physics Letters 2012年第5期29卷 161-164页

作者： ANG Zi-Xuan CUI Gui-Xiang XU Chun-Xiao zhang Zhao-shun SHAO Liang Department of Engineering Mechanics Tsinghua UniversityBeijing 100084 Laboratory of Fluid Mechanics and Acoustics Ecole Centrale de LyonFrance

The correlation between the temperature and streamwise velocity fluctuations in rotating turbulent channel flow is *** the previously found analogous property between the statistics of the temperature and streamwise velocity fluctuations,the correlation can more appropriately reveal the similarity between two random processes. The analysis of the correlation coefficient obtained from the database of direct numerical simulation indicates that the rotation weakens the correlation in most regions of the flow,especially on the suction ***,the correlation is slightly enhanced by the rotation in some regions of the rotating channel,which challenges the general understanding that rotation undoubtedly weakens the *** discuss the mechanism of the rotating effect on the correlation,the transport equations of the variance of temperature and streamwise velocity fluctuations are considered. The Coriolis force is found to have an indirect effect on the correlation.

关键词： rotating rotation analogous

Mapk7 deletion in chondrocytes causes vertebral defects by reducing MEF2C/PTEN/AKT signaling

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Genes & Diseases 2024年第2期11卷 964-977页

作者： Chengzhi Wu Hengyu Liu Dongmei Zhong Xiaoming Yang Zhiheng Liao Yuyu Chen shun zhang Deying Su Baolin zhang Chuan Li Liru Tian Caixia Xu Peiqiang Su Guangdong Provincial Key Laboratory of Orthopedics and Traumatology Department of Spine SurgeryThe First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510080China Research Center for Translational Medicine The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510080China Precision Medicine Institute The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong 510080China Department of Orthopedics Renmin Hospital of Wuhan UniversityWuhanHubei 430060China Guangdong Provincial Key Laboratory of Proteomics and State Key Laboratory of Organ Failure Research School of Basic Medical SciencesSouthern Medical UniversityGuangzhouGuangdong 510515China

Mutation of the MAPK7 gene was related to human ***7 regulated the development of limb bones and skulls in ***,the role of MAPK7 in vertebral development is still *** this study,we constructed Col2a1-cre;Mapk7 f/f transgenic mouse model to delete Mapk7 in cartilage,which displayed kyphosis and ***,Mapk7 loss decreased MEF2C expression and thus activated PTEN to oppose PI3K/AKT signaling in vertebral growth plate chondrocytes,which impaired chondrocyte hypertrophy and attenuated vertebral *** vivo,systemic pharmacological activation of AKT rescued impaired chondrocyte hypertrophy and alleviated mouse vertebral defects caused by Mapk7 *** study firstly clarified the mechanism by which MAPK7 was involved in vertebral development,which might contribute to understanding the pathology of spinal deformity and provide a basis for the treatment of developmental disorders of the spine.

关键词： Chondrocyte hypertrophy Growth plate Kyphosis MAPK7 MEF2C Osteopenia PI3K/AKT PTEN

DNA methylation polymorphism in flue-cured tobacco and candidate markers for tobacco mosaic virus resistance

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第11期12卷 935-942页

作者： Jie-hong ZHAO Ji-shun zhang Yi WANG Ren-gang WANG Chun WU Long-jiang FAN Xue-liang REN Guizhou Institute of Tobacco Science Guiyang 550081 China Department of Agronomy Zhejiang University Hangzhou 310029 China

DNA methylation plays an important role in the epigenetic regulation of gene expression during plant growth,development,and ***,there is still no distinct evidence in tobacco regarding the distribution of the methylation pattern and whether it contributes to qualitative *** studied the levels and patterns of methylation polymorphism at CCGG sites in 48 accessions of allotetraploid flue-cured tobacco,Nicotiana tabacum,using a methylation-sensitive amplified polymorphism(MSAP) *** results showed that methylation existed at a high level among tobacco accessions,among which 49.3% sites were methylated and 69.9% allelic sites were polymorphic.A cluster analysis revealed distinct patterns of geography-specific *** addition,three polymorphic sites significantly related to tobacco mosaic virus(TMV) resistance were *** suggests that tobacco breeders should pay more attention to epigenetic traits.

关键词： Methylation-sensitive amplified polymorphism Epigenetic modification Tobacco mosaic virus (TMV)resistance Flue-cured tobacco

Microstructural evolution and its influence on mechanical and corrosion behaviors in a high-Al/Zn containing duplex Mg-Li alloy after friction stir processing

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Journal of Materials Science & Technology 2024年第17期184卷 245-255页

作者： Yixing Zhu Mengran Zhou Yingxin Geng shun zhang Tongzheng Xin Gaoqiang Chen Yifan Zhou Xiaoyu Zhou Ruizhi Wu Qingyu Shi State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationBeijing 100084China Key Laboratory of Superlight Materials&Surface Technology(Ministry of Education) Harbin Engineering UniversityHarbin 150001China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Beijing North Vehicle Group Corporation Beijing 100072China

Ultralight Mg-Li alloys offer promising applications across various ***-Li alloys enriched with Al and Zn hold theoretical potential for achieving excellent mechanical strength and corrosion ***,the structural and performance characteristics of such Mg-Li alloys,particularly after thermo-mechanical processing,remain inadequately explored and *** study investigated the mi-crostructural evolution of a Mg-9Li-5Al-4Zn alloy after friction stir processing and its consequent effects on the mechanical and corrosion *** grain size of the alloy was effectively refined and sta-bilized during friction stir processing at various heat *** yield strength of the alloy increased by 86.4%after friction stir processing under the highest heat input condition,which was attributed to fine grain strengthening,solid solution strengthening and dispersion ***,the alloy ex-perienced a slight decrease in elongation after the friction stir *** alloy subjected to friction stir processing with the highest heat input exhibited a minimal corrosion current density of 6.10×10^(−6) A/cm^(2),which was only 25%of the base *** enhanced anti-corrosion properties can be attributed to the dispersion and distribution of precipitated particles induced by friction stir processing,which hin-dered the micro-galvanic corrosion and promoted the generation of a compact surface film,leading to minimal and uniform *** investigation can be significant for understanding the metallurgical mechanisms and performance evolution of Mg-Li alloys during thermomechanical processes.

关键词： Mg-Li-Al-Zn alloy Friction stir processing Microstructure evolution Thermal-mechanical stability Corrosion behavior

Quantum key distribution transmitter chip based on hybrid-integration of silica and lithium niobates

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Chinese Physics B 2022年第6期31卷 415-421页

作者： Xiao Li Liang-Liang Wang Jia-shun zhang Wei Chen Yue Wang Dan Wu Jun-Ming An State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of Sciences(CAS)Beijing 100083China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China

A quantum key distribution transmitter chip based on hybrid-integration of silica planar light-wave circuit(PLC)and lithium niobates(LN)modulator PLC is *** silica part consists of a tunable directional coupler and 400-ps delay line,and the LN part is made up of a Y-branch,with electro-optic modulators on both *** two parts are facet-coupled to form an asymmetric Mach-Zehnder *** successfully encode and decode four BB84 states at 156.25-MHz repetition *** phase-encoding of 0 orπis achieved,with interference fringe visibilities 78.53%and 82.68%for states|+〉and|-〉,*** the aid of an extra off-chip LN intensity modulator,two time-bin states are prepared and the extinction ratios are 18.65 dB and 15.46 dB for states|0〉and|1〉,respectively.

关键词： quantum key distribution hybrid-integration BB84

Effects of High Temperature Stress on Microscopic and Ultrastructural Characteristics of Mesophyll Cells in Flag Leaves of Rice

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Rice science 2009年第1期16卷 65-71页

作者： zhang Gui-lian CHEN Li-yun zhang shun-tang ZHENG Hua LIU Guo-hua Rice Research Institute Hunan Agricultural University Changsha 410128 China

The microscopic and ultrastructural characteristics of mesophyll cells in flag leaves of two rice lines （a thermosensitive line 4628 and a thermo-resistant line 996） under high temperature stress （37℃ during 8：00-17：00 and 30℃ during 17：00-8：00） were investigated using an optical and a transmission electron microscopy. The membrane permeability and malondialdehyde content increased under the high temperature stress, and the increase of both variables was greater in the line 4628 than in the line 996. Under the high temperature stress, the line 996 showed tightly arranged mesophyll cells in flag leaves, fully developed vascular bundles and some closed stomata, whereas the line 4628 suffered from injury because of undeveloped vascular bundles, loosely arranged mesophyll cells and opened stomata. The mesophyll cells in flag leaves of the line 4628 were severely damaged under the high temperature stress, i.e. the chloroplast envelope became blurred, the grana thylakoid layer was arranged loosely and irregularly, the stroma layer disappeared, many osmiophilic granules appeared within the chloroplast, the outer membrane of mitochondria and the nucleus disintegrated and became blurred, the nucleolus disappeared, and much fibrillar-granular materials appeared within the nucleus. In contrast, the mesophyll cells in flag leaves of the line 996 maintained an intact ultrastructure under the high temperature stress. From these results, it is suggested that the ultrastructural modification of the cell membrane system is the primary plant response to high temperature stress and can be used as an index to evaluate the crop heat tolerance.

关键词： rice high temperature stress heat tolerance flag leaf microscopic characteristic ultrastructure characteristic mesophyll cell cytology

Two-stage extraction by partial grinding of impacted mandibular third molar in close proximity to the inferior alveolar nerve

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World Journal of Clinical Cases 2024年第10期12卷 1728-1732页

作者： Guang-Ming Luo zhang-shun Yao Wei-Xiang Huang Lei-Yan Zou Yan Yang Kunbaida Outpatient Department Kunming Medical University School and Hospital of StomatologyKunming 650106Yunnan ProvinceChina Yunnan Key Laboratory of Stomatology Kunming 650106Yunnan ProvinceChina

BACKGROUND Extraction of impacted third molars often leads to severe complications caused by damage to the inferior alveolar nerve(IAN).AIM To proposes a method for the partial grinding of an impacted mandibular third molar(IMM3)near the IAN to prevent IAN injury during IMM3 *** Between January 1996 and March 2022,25 patients with IMM3 roots near the IAN were *** first stage of the operation consisted of grinding a major part of the IMM3 crown with a high-speed turbine dental drill to achieve sufficient space between the mandibular second molar and *** 6 months,when the root tips were observed to be away from the IAN on X-ray examination,the remaining part of the IMM3 was completely *** All IMM3s were extracted easily without symptoms of IAN injury after *** Partial IMM3 grinding may be a good alternative treatment option to avoid IAN injury in high-risk cases.

关键词： Partial grinding Impacted mandibular third molar Inferior alveolar nerve Cone-beam computed tomography

A Comparative Study of the Three Chinese Translated Versions of Poetry in Jane Eyre

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Journal of Literature and Art Studies 2022年第9期12卷 875-881页

作者： zhang Chu-han zhang shun-sheng University of Shanghai for Science and Technology Shanghai200093 China

In poetry translation,the translator’s subjectivity in translation activities determines the quality of translation to a great extent,for the translator must try to retain the imagery of the original poetry through their own understanding of the original *** comparing the three Chinese translated versions of poetry in Jane Eyre by Huang Yuanshen,Zhu Qingying and Wu Junxie,this paper finds that the diachronic interpretation in the process of poetry creation,which is beneficial to the communication between the original work and the readers,helps the readers to experience the aesthetic beauty of the original poetry.

关键词： Jane Eyre Huang’s translated version Zhu’s translated version Wu’s translated version poetry’s imagery comparison

Analysis of ionospheric anomalies before the 2011 M_w 9.0 Japan earthquake

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Chinese Science Bulletin 2012年第5期57卷 500-510页

作者： YAO YiBin CHEN Peng WU Han zhang shun PENG WenFei School of Geodesy and Geomatics Wuhan UniversityWuhan 430079China

On March 11, 2011, a large earthquake of Mw=9.0 occurred near the east coast of Honshu, Japan. This paper investigates preearthquake ionospheric anomalies during the earthquake period, using data from global navigation satellite systems and ionosonde stations near the epicenter. A clear anomaly that occurred on March 8 lasted 6 hours. Eliminating ionospheric anomalies that may have been caused by solar activities and magnetic storms, we believe that a positive anomaly on March 8 was very possibly an ionospheric precursor. The affected ionospheric area on March 8, which is evident on a vertical total electron content distribution map, extended to 50° in longitude and 20° in latitude, with length ratio approximately 3:1. The anomaly peak arose from 15:00-19:00 LT, and its location did not coincide with the vertical projection of the epicenter, but was instead to its south. Corresponding ionospheric anomalies are also observed in the magnetically conjugated region. There were no obvious ionospheric anomalies in other parts of the world. To analyze changes in the ionospheric anomaly, computerized ionospheric tomography technology was used to invert the spatial and temporal distribution of electron density in the ionosphere. The ionospheric anomaly on March 8, 2011 is suggested to be an ionospheric precursor of the March 11 earthquake in Japan.

关键词：电离层异常地震前日本全球导航卫星系统垂直投影总电子含量太阳活动电子密度

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蓝牙位置隐私保护方案的研究与设计

通信学报 2011年第9期32卷 116-122页

作者：郁滨张顺信息工程大学电子技术学院河南郑州450004

通过对蓝牙位置隐私攻击机制和现有保护方案不足的分析,建立了蓝牙地址分级模型,依据此模型设计了蓝牙位置隐私保护方案,与现有方案相比,该协议不仅可以抵抗针对蓝牙位置隐私的窃听攻击、重放攻击、跳频序列攻击、会话地址跟踪攻击、字... 详细信息

通过对蓝牙位置隐私攻击机制和现有保护方案不足的分析,建立了蓝牙地址分级模型,依据此模型设计了蓝牙位置隐私保护方案,与现有方案相比,该协议不仅可以抵抗针对蓝牙位置隐私的窃听攻击、重放攻击、跳频序列攻击、会话地址跟踪攻击、字典攻击和中间人攻击,同时具有较小的计算量和存储需求。

关键词：蓝牙位置隐私地址分级寻呼连接协议