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Advances in Polar Science 2012年第2期23卷 87-94页

作者： CHEN liqi ZHAN Liyang xu Suqing ZHANG Jiexia ZHANG Yuanhui xu Guojie Key Laboratory of Global Change and Marine-Atmospheric Chemistry State Oceanic Administration(SOA)Xiamen 361005China Third Institute of Oceanography SOAXiamen 361005China

We analyzed the N20 content of surface seawater sampled from Prydz Bay, Antarctica, on a cruise track between 30°S and 30°N during the twenty-second Chinese National Antarctic Research Expedition during austral summer, 2006. The surface water showed an average pN20 value of 311.9a：7.6 nL.L-1 （14.1：t：0.4 nmol-Ll）, which was slightly undersaturated. The air-sea N2O flux in the region was -0.3±0.8 ***,dl; howeveh N20 in the surface water was oversaturated in most stations along the cruise track. Saturation anomalies were greater than 10%, with a maximum of 54.7% being observed at the Eqaator, followed by 31% at 10°N in the Sulu Sea. The air-sea fluxes at these locations were 12.4 and 4 μmol-mLd-1, respectively. Overall, the results indicated that surface water in Prydz Bay was near equilibrium with atmospheric N20, and that ocean waters in lower latitudes acted as a N20 source. Physical processes such as stratification, ice-melt water dilution, and solar radiation dominate the factors leading to N20 saturation of surface water of Prydz Bay, while biological production and upwelling are primarily responsible for the N20 oversaturation of surface water observed in subtropical and tropical regions along the cruise track.

关键词： dissolved N20 saturation anomalies tropic subtropic Prydz Bay

Extremely powerful and frequency-tunable terahertz pulses from a table-top laser–plasma wiggler

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High Power Laser Science and Engineering 2023年第6期11卷 249-255页

作者： Jie Cai Yinren Shou Yixing Geng liqi Han Xinlu xu Shuangchun Wen Baifei Shen Jinqing Yu xueqing Yan State Key Laboratory of Nuclear Physics and Technology and Key Laboratory of HEDP of the Ministry of EducationCAPTPeking UniversityBeijingChina Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications School of Physics and ElectronicsHunan UniversityChangshaChina Center for Relativistic Laser Science Institute for Basic ScienceGwangjuRepublic of Korea Shanghai Normal University ShanghaiChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanChina Guangdong Laser Plasma Institute GuangzhouChina

The production of broadband,terawatt terahertz(THz) pulses has been demonstrated by irradiating relativistic lasers on solid ***,the generation of extremely powerful,narrow-band and frequency-tunable THz pulses remains a ***,we present a novel approach for such THz pulses,in which a plasma wiggler is elaborated by a table-top laser and a near-critical density *** such a wiggler,the laser-accelerated electrons emit THz radiations with a period closely related to the plasma *** theoretical model and numerical simulations predict that a THz pulse with a laser-THz energy conversion of over 2.0%,an ultra-strong field exceeding 80 GV/m,a divergence angle of approximately 200 and a center frequency tunable from 4.4 to 1.5 THz can be generated from a laser of 430 ***,we demonstrate that this method can work across a wide range of laser and plasma parameters,offering potential for future applications with extremely powerful THz pulses.

关键词： laser plasma terahertz wiggler

Chemical composition of marine aerosols of the 26th Chinese National Antarctic Research Expedition

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Advances in Polar Science 2011年第3期22卷 165-174页

作者： xu GuoJie CHEN liqi ZHANG YuanHui WANG JianJun LI Wei LIN Qi Key Laboratory of Global Change and Marine-Atmospheric Chemistry SOA Xiamen 361005 China Third Institute of Oceanography SOA Xiamen 361005 China

The ionic compositions of aerosol samples collected during the 26th Chinese National Antarctic Research Expedition were analyzed and the sources of ions were distinguished. Cl-, Na＋, SO2-, NO3-, and Mg2＋ were the most abundant ionic components in the marine aerosols. Cl- and Na＋ contributed over 70% in the total ionic composition, indicating the sea salt is still the primary composition in marine aerosols, followed by the sulfate as the secondary ionic component existed as NH4N03, NH4HSO4, （NH4）2S04. The maximal sea salt concentrations were found at around 40~S and could be attributed to greater winds. The concentrations of methane sulfonic acid （MSA） appeared increasing trend from the low to high latitudes, possibly caused by lower temperature in air and higher marine biological processes in the marginal waters in Antarctica. The correlation and factor analyzes were used to investigate possible sources of these ions. Cl-, Br-, Na＋, K＋, Mg2＋ and Ca2＋ had predominantly marine sources; while F-, NO3 and NH＋ had mostly anthropogenic sources; MSA had marine biogenic sources. The concentrations of SO42- were influenced by both marine and anthropogenic sources.

关键词： Soluble ions MSA Southern Ocean 26th Chinese National Antarctic Research Expedition

山羊胎肝内定位注射不同体积间充质干细胞对胎羊发育的影响

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西南国防医药 2018年第1期28卷 19-22页

作者：黄小昆龙海苏锡雄杨艾梅李自安余璞王强刘菊芬王金祥潘兴华庞荣清许立奇成都军区昆明总医院细胞生物治疗中心干细胞与免疫细胞生物医药技术国家地方联合工程实验室云南省细胞治疗技术转化医学重点实验室云南省干细胞工程实验室昆明医科大学昆明总医院临床学院昆明总医院特诊科昆明650032

目的探索山羊胎肝内定位注射不同体积间充质干细胞(MSC)对胎羊发育的影响。方法以B超探查10只疑似怀孕的母山羊,观察胎羊数量、胎羊性别,确定胎肝位置。怀孕约3个月时,在B超引导下穿刺至胎肝,注射不同体积和不同数量的雄性山羊骨髓MSC... 详细信息

目的探索山羊胎肝内定位注射不同体积间充质干细胞(MSC)对胎羊发育的影响。方法以B超探查10只疑似怀孕的母山羊,观察胎羊数量、胎羊性别,确定胎肝位置。怀孕约3个月时,在B超引导下穿刺至胎肝,注射不同体积和不同数量的雄性山羊骨髓MSC悬液到胎肝实质区域,精心护理并观察穿刺母羊是否流产。结果借助B超探查10只疑似怀孕母羊中的6只怀孕,可以发现胎心跳动和胎肝血流并确定胎肝的位置,在B超引导下能够准确注射MSC悬液至胎肝实质区域,注射1 ml MSC悬液,不会引起流产,安全可行;而注射同等细胞数量的4 ml MSC悬液,则导致穿刺山羊流产。结论 B超显影可确诊山羊怀孕和确定胎肝位置,胎肝内注射1 m山羊骨髓MSC悬液不会导致胎羊流产,MSC数量不变而体积增加至4 ml时易导致胎羊流产。

关键词：超声诊断超声引导定位注射山羊

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考虑时变气象参数的输电导线覆冰数值仿真

哈尔滨工业大学学报 2022年第11期54卷 11-21,77页

作者：王强楼文娟徐海巍王礼祺浙江大学建筑工程学院杭州310058

近年来输电线路覆冰灾害频发,给电网运行带来了极大威胁。现有研究大多未考虑时变气象条件对导线覆冰所产生的影响。为对线覆冰增长情况进行有效预测,给输电线路融冰除冰和舞动预警提供重要参考。本文基于导线覆冰机理和欧拉气液两相流... 详细信息

近年来输电线路覆冰灾害频发,给电网运行带来了极大威胁。现有研究大多未考虑时变气象条件对导线覆冰所产生的影响。为对线覆冰增长情况进行有效预测,给输电线路融冰除冰和舞动预警提供重要参考。本文基于导线覆冰机理和欧拉气液两相流模型,提出了考虑时变气象参数时变影响下的输电线路导线覆冰数值仿真方法。在此基础上建立了基于FLUENT和FENSAP-ICE软件的导线覆冰增长数值模拟框架,利用三维仿真模型,研究了温度、风速、空气中的液态水含量、水滴中值体积直径等时变气象参数和导线直径等因素对输电线路导线覆冰质量及覆冰形状的影响,结果表明导线覆冰形状受风速、过冷却水滴中值体积直径、空气中的液态含水量和导线直径影响较大,受温度影响较小。最终利用真实输电线路现场覆冰监测数据以及相应的气象数据对仿真计算方法的有效性进行了验证。预测结果与输电线路覆冰监测结果吻合度较好,考虑时变气象参数的方法比不考虑时变参数的方法更能有效地预测导线实时覆冰形状和质量,表明本文提出的导线覆冰仿真方法具有较好的精度。

关键词：输电线路导线覆冰数值模拟气象参数时变

Modulating contact properties by molecular layers in organic thin-film transistors

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Electron 2023年第2期1卷 82-89页

作者： Li Sun Yating Li Jiacheng Xie liqi Zhou Peng Wang Jian-Bin xu Yi Shi Xinran Wang Daowei He National Laboratory of Solid State Microstructures Key Lab of Optoelectronic Devices and Systems with Extreme PerformancesSchool of Electronic Science and Engineeringand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingChina National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingChina Department of Physics University of WarwickCoventryUK Department of Electronic Engineering and Materials Science and Technology Research Center The Chinese University of Hong KongHong Kong SARChina School of Integrated Circuits Nanjing UniversitySuzhouChina

Advanced organic devices and circuits demand both ultrahigh charge carrier mobilities and ultralow-resistance ***,due to a larger access resistance in staggered organic thin-film transistors(OTFTs),the achievement of ultralow contact resistance(Rc)is still a *** modulation of contact resistance by molecular layers near the interface has been rarely ***,we demonstrate that fewlayer organic single crystals are grown on hafnium oxide(HfO_(2))by solution-shearing *** utilize these organic crystals to fabricate bottom-gate staggered OTFTs with different contact *** results show that the contact properties of OTFTs are obviously modulated by crystal *** tri-layer(3L)evaporated-Au C10-DNTT OTFTs exhibit optimal electrical performance,including ultralow Rc of 5.6Ω⋅cm,recorded transfer length of 0.4μm,field-effect mobility over 14 cm^(2)V^(−1)s^(−1),threshold voltage lower than 0.3 V,and long-term air stability over 8 *** main cause is that the metal atoms can penetrate into the charge transport layer,with damage-free,in 3L evaporated-Au OTFTs;nevertheless,it cannot be realized in other *** to layer stacking of conjugated molecules and polymers,our strategy can efficiently modulate the contact resistance to aid the development of highperformance organic devices and circuits.

关键词： contact resistance mobility organic thin-film transistor single crystal

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婴幼儿对合作行为共享性特征的理解

心理科学进展 2014年第9期22卷 1404-1412页

作者：徐晓惠李晶朱莉琪中国科学院心理研究所行为科学重点实验室北京100101 中国科学院大学北京100049

合作行为的共享性特征是指合作伙伴对彼此的动作和意图进行反应、承诺完成共同的目标、进行角色转换并支持彼此的角色。同时,预期未来奖赏的能力以及合作活动结束分享奖励的趋势也是互惠性合作活动的共享性本质之一。婴幼儿已经开始理... 详细信息

合作行为的共享性特征是指合作伙伴对彼此的动作和意图进行反应、承诺完成共同的目标、进行角色转换并支持彼此的角色。同时,预期未来奖赏的能力以及合作活动结束分享奖励的趋势也是互惠性合作活动的共享性本质之一。婴幼儿已经开始理解合作行为的共享性特征,他们能与同伴形成共享性意图和关于任务的共同目标;当同伴完成任务有困难时,能够主动提供帮助;能够理解自己和他人的角色;合作后更倾向于平等分享所得资源。本文从合作行为的共享性特征出发,基于合作中情绪和语言的作用、合作的对象以及合作的研究工具等方面提出未来的研究构想。

关键词：婴幼儿合作行为共享性意图共同目标分享行为

Review of CHINARE chemical oceanographic research in the Southern Ocean during 1984–2016

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Advances in Polar Science 2017年第2期28卷 139-150页

作者： CHEN liqi CHEN Min ZHAN Liyan QI Di GAO Zhongyong WANG Jianjun xu Suqing CHEN Kui ZENG Jian ZHANG Run Key Laboratory of Global Change and Marine-Atmospheric Chemistry of State Oceanic Administration (SOA) Third Institute of Oceanography SOA College of Ocean and Earth Sciences Xiamen University

Between 1984 and 2016, China executed 33 Antarctic cruises with the icebreaker R/V xuelong, which have provided opportunities for Chinese scientists to investigate the status and changes of the Southern Ocean. Research in chemical oceanography constitutes one of the primary missions of the Chinese National Antarctic Research Expedition （CH1NARE）. This paper reviews nearly 30 years of Chinese Antarctic expeditions, focusing on the major progress achieved in chemical oceanographic research. Specifically, the sea-surface distributions and air-sea fluxes of CO2 and N20 are considered, and the transport, flux, and budget of organic matter are investigated based on isotopes in the Southern Ocean, especially in Prydz Bay. In addition, the nutrient distribution and deep-water particle export in Prydz Bay and the study of aerosol heavy metal characteristics are considered. Finally, the prospects for future Chinese Antarctic chemical oceanographic research are outlined.

关键词： chemical oceanography Southern Ocean CHINARE Prydz Bay

3~8岁儿童对资源分配中贡献、努力和能力因素的权衡

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心理与行为研究 2021年第1期19卷 30-36页

作者：徐晓惠安静朱莉琪中国科学院行为科学重点实验室中国科学院心理研究所北京100101 中国科学院大学心理学系北京100049 鲁东大学教育科学学院烟台264011

研究选取3~4岁、5~6岁和7~8岁儿童,考察儿童在分配资源时对贡献、努力和能力因素的权衡,采用资源分配范式和在以上三维度上不同的人物故事情境。结果发现,各年龄儿童均最偏爱平等分配,相比之下,3~4岁儿童倾向分给贡献最大的个体最多的资... 详细信息

研究选取3~4岁、5~6岁和7~8岁儿童,考察儿童在分配资源时对贡献、努力和能力因素的权衡,采用资源分配范式和在以上三维度上不同的人物故事情境。结果发现,各年龄儿童均最偏爱平等分配,相比之下,3~4岁儿童倾向分给贡献最大的个体最多的资源,7~8岁儿童则分给最努力的个体更多资源。儿童均较少按能力进行分配。随着年龄发展,儿童对贡献原则赋予的权重逐渐减弱,对个体努力的认可度逐渐增强,显示出儿童分配原则的发展变化。

关键词：资源分配贡献努力公平行为