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古太平洋板块在欧亚大陆下的俯冲历史:东北亚陆缘中生代-古近纪岩浆记录

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中国科学：地球科学 2018年第5期48卷 549-583页

作者：唐杰许文良王枫葛文春吉林大学地球科学学院长春130061 国土资源部东北亚矿产资源评价重点实验室长春130061

系统总结了东北亚陆缘中生代-古近纪火成岩的岩石组合、地球化学特征及其空间变异,讨论了中生代多构造体系影响的时空范围以及古太平洋板块向欧亚大陆下俯冲作用的起始时间及其俯冲历史.东北亚陆缘中生代-古近纪火成岩可划分为九期:早-... 详细信息

系统总结了东北亚陆缘中生代-古近纪火成岩的岩石组合、地球化学特征及其空间变异,讨论了中生代多构造体系影响的时空范围以及古太平洋板块向欧亚大陆下俯冲作用的起始时间及其俯冲历史.东北亚陆缘中生代-古近纪火成岩可划分为九期:早-中三叠世、晚三叠世、早侏罗世、中侏罗世、晚侏罗世、早白垩世早期、早白垩世晚期、晚白垩世和古近纪.东北亚陆缘三叠纪埃达克质岩石、双峰式火山岩、碱性岩、A-型花岗岩和A-型流纹岩的形成主要与古亚洲洋闭合及闭合后的伸展作用有关,而额尔古纳-兴安地块上三叠纪钙碱性火成岩组合揭示了蒙古-鄂霍茨克大洋板块南向俯冲作用的发生.三叠纪期间,东北亚陆缘处于被动陆缘背景;东北亚陆缘早侏罗世钙碱性火成岩具有弧型火成岩的地球化学特征,陆内为双峰式火成岩和A-型花岗岩组合,自陆缘向陆内火成岩成分极性变化与早侏罗世陆缘增生杂岩一起,揭示了古太平洋板块向欧亚大陆下的俯冲作用始于早侏罗世;东北亚陆缘普遍缺少中侏罗世-早白垩世早期(主要为晚侏罗世)岩浆作用,结合早白垩世陆缘增生杂岩低纬度的生物组合与碎屑锆石年龄组合,暗示该阶段东北亚陆缘与古太平洋板块之间主要处于走滑的构造属性;东北亚陆缘广泛分布的早白垩世晚期钙碱性火山岩、I-型花岗岩和埃达克质岩石指示古太平洋板块向东北亚开启大范围低角度俯冲作用;东北亚陆缘晚白垩世-古近纪火成岩分布范围向东明显缩小,并且由陆内向沿海地区迁移,指示欧亚大陆向东漂移和古太平洋俯冲板块逐渐回撤的构造过程.

关键词：东北亚陆缘中生代-古近纪火成岩古太平洋板块俯冲作用

Power-scalable sub-100-fs Tm laser at 2.08μm

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High Power Laser Science and Engineering 2021年第4期9卷 41-45页

作者： Li Wang Weidong Chen Yongguang Zhao Hanlin Yang Wei Jing Zhongben Pan Hui Huang Jiachen Liu Ji Eun Bae fabian rotermund Pavel Loiko Xavier Mateos Zhengping Wang Xinguang xu Uwe Griebner Valentin Petrov Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy 12489 BerlinGermany Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou 221116China Institute of Chemical Materials China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Department of Physics Korea Advanced Institute of Science and Technology(KAIST)34141 DaejeonRepublic of Korea Centre de recherche sur les Ions les Matériaux et la Photonique(CIMAP)UMR 6252 CEA-CNRS-ENSICAENUniversitéde Caen14050 Caen Cedex 4France física i Cristal·lografia de Materials i Nanomaterials(fiCMA-fiCNA) Universitat Rovira i Virgili(URV)43007 TarragonaSpain State Key Laboratory of Crystal Materials and Institute of Crystal Materials Shandong UniversityJinan 250100China

We report on a power-scalable sub-100-fs laser in the 2-μm spectral range using a Tm;-doped‘mixed’(Lu,Sc);O;sesquioxide ceramic as an active *** as short as 58 fs at 2076 nm with an average output power of 114 mW at a pulse repetition rate of approximately 82.9 MHz are generated by employing single-walled carbon nanotubes as a saturable absorber.A higher average power of 350 m W at 2075 nm is obtained at the expense of the pulse duration(65 fs).A maximum average power of 486 mW is achieved for a pulse duration of 98 fs and an optical conversion efficiency of 22.3%,representing the highest value ever reported from sub-100-fs mode-locked Tm lasers.

关键词： 2-μm mode-locked laser single-walled carbon nanotubes Tm:(Lu Sc)_(2)O_(3)

High-performance all-solution-processed inverted quantum dot light-emitting diodes enabled by water treatment

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Nano research 2023年第7期16卷 10215-10221页

作者： Qianqing Hu Junjie Si Desui Chen Xiaoming Hao rui xu Yihang Du Zhuopeng Du Xinquan Gong Hong Zhao Peiqing Cai Qi Ai Xin Yao Yu Yan Zenan Zhang Muzhi Cai Wei Liu Yongyin Kang Zugang Liu College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Key Laboratory of Excited-State Materials of Zhejiang Province State Key Laboratory of Silicon MaterialsDepartment of ChemistryZhejiang UniversityHangzhou 310027China Institute of flexible Electronics Technology of THU ZhejiangJiaxing Key Laboratory of Flexible Electronics based Intelligent Sensing and Advanced Manufacturing TechnologyJiaxing 314000China Zhejiang Najing Technology Co. Ltd.Quzhou 324004China Najing Technology Corporation Ltd. Hangzhou 310052China

All-solution-processed inverted quantum dot(QD)light-emitting diodes(QLEDs)with transparent bottom cathodes can be directly connected to the n-type thin-film transistors,offering a feasible solution for low-cost active matrix-driven QD ***,the subsequent solution-deposition of the hole-transporting layer destroys the underneath QD films,resulting in largely deteriorated device *** strategies have been implemented to prevent QD film from dissolution,but all at a heavy cost of device performance suffering from either reduced efficiency or increased driving ***,a facile and effective water-treatment approach for QD film to fabricate inverted QLEDs through all solution processing is *** water treatment substitutes the long-chain oleate ligands with hydroxyl groups,resulting in significantly improved non-polar solvent resistance of the QD ***,the QD films reserve their excellent photoluminescence efficiency after water *** the water-treated QD film as the emissive layer,all-solution-processed inverted red QLED with a peak external quantum efficiency of 19.6%,a turn-on voltage of 1.8 V,and a T50 operational lifetime of 150,000 h at 100 cd·m^(-2) was ***,efficient and low-voltage-driven green and blue QLEDs can also be prepared with this *** work provides a feasible strategy for the fabrication of high-performance all-solution-processed inverted QLEDs,paving the way toward achieving QLEDs by all ink-jet printing.

关键词： solvent-resistance quantum dots inverted electroluminescence all solution processing

基于超音段韵律特征和GMM-UBM的文本无关的说话人识别

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中国科学技术大学学报 2010年第2期40卷 157-162页

作者：许东星戴蓓蒨刘青松许敏强中国科学技术大学电子科学与技术系安徽合肥230027

提出一种采用超音段韵律特征和GMM-UBM模型结构的文本无关的说话人识别方法,用多尺度小波分析方法从短时倒谱参数MfCC和基频f0随时间变化的韵律中分别提取可用于文本无关说话人识别的超音段韵律特征参数PMfCC和Pf0,并组成联合参数PMfCC... 详细信息

提出一种采用超音段韵律特征和GMM-UBM模型结构的文本无关的说话人识别方法,用多尺度小波分析方法从短时倒谱参数MfCC和基频f0随时间变化的韵律中分别提取可用于文本无关说话人识别的超音段韵律特征参数PMfCC和Pf0,并组成联合参数PMfCCf0.在NIST068side-1side复杂背景电话手机语音数据库上的说话人确认实验则表明,采用一阶小波分析方法提取的超音段韵律参数PMfCC的识别性能与短时MfCC相当,采用超音段韵律特征PMfCCf0的系统确认性能比采用短时MfCC系统有较大的提高.在微软数据库进行不同信噪比测试语音的说话人辨认实验表明,PMfCCf0有比短时MfCC更好的噪声鲁棒性.

关键词：超音段韵律特征 GMM—UBM 文本无关说话人识别

A genome-wide survey of maize lipid-related genes: candidate genes mining,digital gene expression profiling and colocation with QTL for maize kernel oil

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Science China(Life Sciences) 2010年第6期53卷 690-700页

作者： LI Lin1,LI Hui1,LI JiYing1,xu ShuTu1,YANG XiaoHong1,LI JianSheng1 & YAN JianBing1,2 1National Maize Improvement Centre of China,China Agricultural University,Beijing 100193,China 2International Maize and Wheat Improvement Centre (CIMMYT),Apdo.Postal 6-641,06600 Mexico,D.f.,Mexico National Maize Improvement Centre of China China Agricultural University

Lipids play an important role in plants due to their abundance and their extensive participation in many metabolic *** involved in lipid metabolism have been extensively studied in Arabidopsis and other plant *** this study,a total of 1003 maize lipid-related genes were cloned and annotated,including 42 genes with experimental validation,732 genes with full-length cDNA and protein sequences in public databases and 229 newly cloned ***-seven maize lipid-related genes with tissue-preferential expression were discovered by in silico gene expression profiling based on 1984483 maize Expressed Sequence Tags collected from 182 cDNA ***,70 QTL clusters for maize kernel oil were identified,covering 34.5% of the maize ***-nine (84%) QTL clusters co-located with at least one lipid-related gene,and the total number of these genes amounted to ***,thirteen genes with kernel-preferential expression profiles fell within QTL clusters for maize kernel oil *** the maize lipid-related genes identified here may provide good targets for maize kernel oil QTL cloning and thus help us to better understand the molecular mechanism of maize kernel oil accumulation.

关键词： lipid metabolism in silico gene cloning in silico gene expression profiling quantative trait locus(QTL) maize

间接糖基化马蹄金素衍生物的合成及抗乙肝病毒活性研究

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高等学校化学学报 2016年第8期37卷 1451-1459页

作者：徐广灿袁洁刘青川黄正明梁光义徐必学贵州省中国科学院天然产物化学重点实验室贵阳550002 贵阳中医学院药学院贵阳550002 新疆医科大学厚博学院克拉玛依834000 中国人民解放军第三0二医院北京100039

以二缩三乙二醇或三缩四乙二醇为连接臂,通过间接引入具有肝靶向性的D-半乳糖配基的方法,设计合成了6个半乳糖糖基化修饰的肝靶向马蹄金素(MTS)衍生物;通过1H NMr,13C NMr,1H-1H COSY,HMQC和ESI-MS对其结构进行了表征;并以Hep G2 2.2.1... 详细信息

以二缩三乙二醇或三缩四乙二醇为连接臂,通过间接引入具有肝靶向性的D-半乳糖配基的方法,设计合成了6个半乳糖糖基化修饰的肝靶向马蹄金素(MTS)衍生物;通过1H NMr,13C NMr,1H-1H COSY,HMQC和ESI-MS对其结构进行了表征;并以Hep G2 2.2.15为细胞模型初步评价了目标化合物的抗乙肝病毒(HBV)活性.结果表明,所有目标化合物对HBV DNA的复制均有抑制作用,且具有一定的量效关系.化合物15b的体外抗HBV活性最好,后期研究将选用其进行小鼠体内组织分布实验,并与原型化合物以及Y101体内组织分布情况进行比较研究,以验证半乳糖基的引入能否提高MTS衍生物的肝靶向性.

关键词：肝靶向半乳糖马蹄金素衍生物抗HBV活性

E2f-1 overexpression inhibits human gastric cancer MGC-803 cell growth in vivo

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World Journal of Gastroenterology 2015年第2期21卷 491-501页

作者： Wei-Yuan Wei Lin-Hai Yan Xiao-Tong Wang Lei Li Wen-Long Cao Xiao-Shi Zhang Ze-xu Zhan Han Yu Yu-Bo Xie Qiang Xiao Department of Surgery The First Affiliated Hospital of Guangxi Medical University Department of Surgery People’s Hospital of Guangxi Zhuang Autonomous Region Department of Anaesthesiology The First Affiliated Hospital of Guangxi Medical University

AIM: To evaluate the influence of E2f-1 on the growth of human gastric cancer(GC) cells in vivo and the mechanism involved. METHODS: E2f-1 recombinant lentiviral vectors were injected into xenograft tumors of MGC-803 cells in nude mice, and then tumor growth was investigated. Overexpression of transcription factor E2f-1 was assessed by reverse transcription-polymerase chain reaction(rT-PCr) and Western blotting analysis. Apoptosis rates were determined using a terminal deoxynucleotidyl transferase-mediated d UTP-biotin nick end labeling(TUNEL) assay. Expression levels of certain cell cycle regulators and apoptosis-related proteins, such as Bax, survivin, Bcl-2, cyclin D1, S-phase kinaseassociated protein 2, and c-Myc were examined by Western blotting and rT-PCr. rESULTS: Xenograft tumors of MGC-803 cells in nude mice injected with E2f-1 recombinant lentiviral vectors stably overexpressed the E2f-1 gene as measured by semi-quantitative rT-PCr(relative m rNA expression: 0.10 ± 0.02 vs 0.05 ± 0.02 for control vector and 0.06 ± 0.03 for no infection; both P rn blotting(relative protein expression: 1.90 ± 0.05 vs 1.10 ± 0.03 in control vector infected and 1.11 ± 0.02 for no infection; both P rowth-curve of tumor volumes revealed that infection with E2f-1 recombinant lentiviral vectors significantly inhibited the growth of human GC xenografts(2.81 ± 1.02 vs 6.18 ± 1.15 in control vector infected and 5.87 ± 1.23 with no infection; both P fter treatment. TUNEL analysis demonstrated that E2f-1 overexpression promoted tumor cell apoptosis(18.6% ± 2.3% vs 6.7% ± 1.2% in control vector infected 6.3% ± 1.2% for no infection; both P furthermore, lentiviral vector-mediated E2f-1 overexpression increased theexpression of Bax and suppressed survivin, Bcl-2, cyclin D1, Skp2, and c-Myc expression in tumor ***: E2f-1 inhibits growth of GC cells via regulating multiple signaling pathways, and may play an important ro

关键词： E2f-1 Gastric cancer Lentiviral vector Mouse model

不同供磷水平对青椒幼苗生长、光合作用及矿质元素吸收的影响

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西北农林科技大学学报（自然科学版） 2024年第2期52卷 104-112页

作者：徐梦珠秦志翔张帆崔云浩王军娥张毅石玉山西农业大学园艺学院山西太谷030801

【目的】探究不同供磷水平对青椒幼苗光合特性及矿质元素吸收的影响,为青椒栽培的精准施肥、高效生产提供理论依据。【方法】以‘奥黛丽-红缨枪’青椒幼苗为试材,采用水培法,设置T1(50%P)、T2(75%P)、T3(100%P,对照)、T4(125%P)4个处理... 详细信息

【目的】探究不同供磷水平对青椒幼苗光合特性及矿质元素吸收的影响,为青椒栽培的精准施肥、高效生产提供理论依据。【方法】以‘奥黛丽-红缨枪’青椒幼苗为试材,采用水培法,设置T1(50%P)、T2(75%P)、T3(100%P,对照)、T4(125%P)4个处理,测定不同供磷水平下青椒幼苗的生物量、根系活力、光合色素含量、光合特性及矿质元素含量、积累量,研究各处理对青椒幼苗生长特性的影响,采用主成分分析法分析不同处理的综合表现。【结果】与T3处理相比,T1处理青椒幼苗的地下部鲜质量、地下部干质量、根系活力,叶绿素a、类胡萝卜素、叶绿素a+b含量及净光合速率(P_(n))、蒸腾速率(T_(r))和气孔导度(G_(s))分别显著降低了35.03%,33.33%,54.32%,38.65%,61.83%,22.01%,50.48%,36.50%和40.16%,胞间二氧化碳浓度(C_(i))显著升高了18.43%;T2处理地上部鲜质量、地上部干质量、根系活力、叶绿素b含量及T_(r)和G_(s)分别显著增加了51.76%,54.02%,14.76%,40.49%,62.02%和124.76%;T4处理地下部鲜质量、地下部干质量、根系活力、叶绿素a含量和P_(n)分别显著降低了26.60%,32.00%,17.87%,9.81%和28.83%。与T3处理相比,T2处理青椒幼苗fe、Zn、Ca、K、Mg和N的积累量分别显著上升了62.67%,44.56%,42.33%,24.00%,33.97%和41.41%,Mn和P的积累量分别显著下降了20.85%和34.99%。主成分分析结果表明,各处理青椒幼苗综合表现为T2>T3>T4>T1。【结论】施75%磷肥(T2)对青椒幼苗生长发育、光合作用和矿质元素吸收的促进效果较好。

关键词：供磷水平青椒幼苗光合性能矿质元素吸收

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表面强化传热对固定床费-托合成的影响

石油炼制与化工 2017年第4期48卷 6-11页

作者：徐润李猛胡志海徐宏中国石化石油化工科学研究院北京100083 华东理工大学机械与动力工程学院化学工程联合国家重点实验室

采用小型池沸腾实验装置研究普通光滑管、表面多孔管和T型槽管的沸腾特性,考察反应管的结构参数对沸腾传热的影响规律,并在中型装置上分别采用普通光滑管、多孔表面管和T型槽管3种形式的反应器,研究了强化传热对固定床费-托合成性能的... 详细信息

采用小型池沸腾实验装置研究普通光滑管、表面多孔管和T型槽管的沸腾特性,考察反应管的结构参数对沸腾传热的影响规律,并在中型装置上分别采用普通光滑管、多孔表面管和T型槽管3种形式的反应器,研究了强化传热对固定床费-托合成性能的影响。结果表明:在小型池沸腾实验装置上,表面多孔管和T型槽管的强化传热性能明显优于普通光滑管,能降低起始沸腾过热度,使得沸腾现象较普通光滑管提早发生,但在不同的热流密度范围,表面多孔管和T型槽管的强化传热性能不同;表面多孔管和T型槽管反应器均可以改善费-托合成性能,表面多孔管在低转化率时强化传热效果不明显,但随热流密度增加,传热性能得到改善,催化剂床层温度分布趋于均匀,T型槽管对反应的促进效果更明显,在相同反应条件下,CO转化率增加,C_5^+选择性提高;与多孔表面管相比,T型槽管可以显著提高管外介质对管壁的给热系数,使反应管的传热得到强化。

关键词：费-托合成固定床强化传热表面多孔管 T型槽管