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Laser-Induced Recoverable Fluorescence Quenching of Perovskite Films at a Microscopic Grain Scale

Energy & Environmental Materials 2022年第4期5卷 1189-1199页

作者： Yuren Xiang Yameng Cao Wenqiang Yang Rui Hu Sebastian Wood Bowei Li Qin Hu Fan Zhang Jujie He Mozhgan Yavari Jinlai zhao yunlong zhao Jun Song Junle Qu Rui Zhu Thomas P.Russell S.Ravi P.Silva Wei Zhang Center for Biomedical Optics and Photonics(CBOP)&College of Physics and Optoelectronic Engineering Key Laboratory of Optoelectronic Devices and SystemsShenzhen UniversityShenzhen 518060China Advanced Technology Institute University of SurreyGuildford GU27XHUK National Physical Laboratory Hampton RoadTeddington TW110LWUK Department of Polymer Science and Engineering University of MassachusettsAmherst MA 01003USA State Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China College ofmaterials science and engineering Shenzhen Key laboratory of Polymer Science and TechnologyGuangdong Research Center for interfacial Engineering of FunctionalMaterialsShenzhen UniversityShenzhen 518060China

Understanding the fundamental properties of metal-halide perovskite materials is driving the development of novel optoelectronic ***,we report the observation of a recoverable laser-induced fluorescence quenching phenomenon in perovskite films with a microscopic grain-scale restriction,accompanied by spectral *** fluorescence quenching depends on the laser intensity and the dwell time under Auger recombination dominated *** features indicate that the perovskite lattice deformation may take the main responsibility for the transient and show a new aspect to understand halide perovskite *** further modulate this phenomenon by adjusting the charge carrier recombination and extraction,revealing that efficient carrier transfer can improve the bleaching resistance of perovskite *** results provide future opportunities to attain high-performance devices by tuning the perovskite lattice disorder and harvesting the energetic carriers.

关键词： fluorescence quenching perovskite photophysics stability

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Low-strain TiP_(2)O_(7) withthree-dimensionalionchannelsas long-life and high-rate anode material for Mg-ion batteries

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Interdisciplinary Materials 2022年第1期1卷 140-147页

作者： Fangyu Xiong Yalong Jiang Li Cheng Ruohan Yu Shuangshuang Tan Chen Tang Chunli Zuo Qinyou An yunlong zhao Jean-Jacques Gaumet Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory FoshanChina Advanced Technology Institute University of SurreyGuildfordSurreyUK Laboratoire de Chimie et Physique:Approche Multi-echelles des Milieux Complexes Institut Jean BarriolUniversitede LorraineMetzFrance

Rechargeable magnesium batteries are identified as a promising next-generation energy storage system,but their development is hindered by the anode−electrolyte−cathode incompatibilities and passivation of magnesium metal *** avoid or alleviate these problems,the exploitation of alternative anode materials is a promising ***,we present titanium pyrophosphate(TiP_(2)O_(7))as anode materials for magnesium-ion batteries(MIBs)and investigate the effect of the crystal phase on its magnesium storage *** with the me-tastable layered TiP_(2)O_(7),the thermodynamically stable cubic TiP_(2)O_(7) displays a better rate capability of 72 mAh g^(−1) at 5000 mA g^(−1).Moreover,cubic TiP_(2)O_(7) exhibits excellent cycling stability with the capacity of 60 mAh g^(−1) after 5000 cycles at 1000 mA g^(−1),which are better than pre-viously reported Ti-based anode materials for *** situ X-ray diffraction technology confirms the single-phase magnesiumion inter-calation/deintercalation reaction mechanism of cubic TiP_(2)O_(7) with a low volume change of 3.2%.In addition,the density functional theory calcu-lation results demonstrate that three-dimensional magnesiumion diffu-sion can be allowed in cubic TiP_(2)O_(7) with a low migration energy barrier of 0.62 *** work demonstrates the promise of TiP_(2)O_(7) as high-rate and long-life anode materials for MIBs and may pave the way for further development of MIBs.

关键词： anode material intercalation low-strain Mg-ion battery TiP_(2)O_(7)

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Cytochrome P450 mono-oxygenase CYP703A2 plays a central role in sporopollenin formation and ms5ms6 fertility in cotton

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Journal of Integrative Plant Biology 2022年第10期64卷 2009-2025页

作者： Huanhuan Ma Yuanlong Wu Ruiling Lv Huabin Chi yunlong zhao Yanlong Li Hongbo Liu Yizan Ma Longfu Zhu Xiaoping Guo Jie Kong Jianyong Wu Chaozhu Xing Xianlong Zhang Ling Min National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China College of Biology and Agricultural Resources Huanggang Normal UniversityHuanggang 438000China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China Institute of Economic Crops Xinjiang Academy of Agricultural SciencesXinjiang 830091China State Key Laboratory of Cotton Biology Institute of Cotton Research of Chinese Academy of Agricultural SciencesAnyang 455000China

The double-recessive genic male-sterile(ms)line ms5 ms6 has been used to develop cotton(Gossypium hirsutum)hybrids for many years,but its molecular-genetic basis has remained ***,we identified the Ms5 and Ms6 loci through map-based cloning and confirmed their function in male sterility through CRISPR/Cas9 gene ***5 and Ms6 are highly expressed in stages 7–9 anthers and encode the cytochrome P450 mono-oxygenases CYP703A2-A and *** ms5 mutant carries a single-nucleotide C-to-T nonsense mutation leading to premature chain termination at amino acid 312(GhCYP703A2-A^(312aa)),and ms6 carries three nonsynonymous substitutions(D98E,E168K,and G198R)and a synonymous mutation(L11L).Enzyme assays showed that GhCYP703A2 proteins hydroxylate fatty acids,and the ms5(GhCYP703A2-A^(312aa))and ms6(GhCYP703A2-D^(D98E,E168K,G198R))mutant proteins have decreased enzyme *** and lipidomic analyses showed that in ms5 ms6 plants,C12–C18 free fatty acid and phospholipid levels are significantly elevated in stages 7–9 anthers,while stages 8–10 anthers lack sporopollenin fluorescence around the pollen,causing microspore degradation and male ***,our characterization uncovered functions of GhCYP703A2 in sporopollenin formation and fertility,providing guidance for creating male-sterile lines to facilitate hybrid cotton production and therefore exploit heterosis for improvement of cotton.

关键词： cotton cytochrome P450 mono-oxygenase doublerecessive genic male sterility sporopollenin formation

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Ω相在2024铝合金中的析出机制

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特种铸造及有色合金 2014年第8期34卷 896-898页

作者：赵云龙辽宁装备制造职业技术学院

无银2024铝合金是重要的可析出强化型合金,通过多级时效和室温下冷轧加工可促使Ω-Al2Cu相在该系合金中大量析出。利用透射电镜(TEM)、能谱分析等手段,研究了Ω相在无银的2024铝合金中的析出机制。结果表明,多级时效和室温冷轧联合处理... 详细信息

无银2024铝合金是重要的可析出强化型合金,通过多级时效和室温下冷轧加工可促使Ω-Al2Cu相在该系合金中大量析出。利用透射电镜(TEM)、能谱分析等手段,研究了Ω相在无银的2024铝合金中的析出机制。结果表明,多级时效和室温冷轧联合处理是促使Ω相析出的有效手段。上述工艺处理过程中Mg原子浓度的降低和时效后期T相周围大量存在的形核点是促使Ω相大量析出的主要原因。

关键词： Ω相 2024铝合金析出行为高角环形暗场像

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Preparation and properties of solution-processed zinc tin oxide films from a new organic precursor

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Science China Chemistry 2011年第4期54卷 651-655页

作者： zhao yunlong,DUAN Lian,QIAO Juan,ZHANG DeQiang,DONG GuiFang,WANG LiDuo & QIU Yong Key Laboratory of Organic Optoelectronics & Molecular Engineering,Ministry of Education Department of Chemistry,Tsinghua University,Beijing 100084,China 1. Key Laboratory of Organic Optoelectronics & Molecular Engineering Ministry of Education Department of Chemistry Tsinghua University Beijing 100084 China

Transparent,smooth and dense zinc tin oxide (ZTO) thin films have been successfully produced by using a new precursor solution,zinc acetate and tin(II) 2-ethylhexanoate mixed with 2-ethanolamine in *** ZTO films have been prepared by spin-coating,followed by thermal treatment in oxygen *** morphology,composition,crystallinity and band gap energy (Eg) of the ZTO thin films have been characterized by Atomic Force Microscopy (AFM),Atomic Emission Spectrometry (AES),X-ray Diffraction (XRD) and UV-vis *** conductivity of ZTO is about 9.8×10-9 S/cm,as estimated from the current-voltage (I-V) *** effect of the thermal treatment process on the morphology of ZTO thin films is also discussed.

关键词： zinc tin oxide (ZTO) solution-processed organic precursor thermal treatment process conductivity transparent

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血清异常凝血酶原和甲胎蛋白在布-加综合征合并肝细胞癌中的诊断价值

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安徽医药 2024年第11期28卷 2264-2268页

作者：刘龙郭潇赵云龙蒋明明刘洪涛王文亮祖茂衡徐浩徐州医科大学研究生学院江苏徐州221004 淮安市淮安医院介入科江苏淮安223200 徐州医科大学附属医院介入放射科江苏徐州221006

目的探讨血清异常凝血酶原(PIVKA-Ⅱ)、甲胎蛋白(AFP)在布-加综合征(BCS)合并肝细胞癌(HCC)中的诊断价值。方法收集2015年6月至2021年10月徐州医科大学附属医院收治的43例BCS合并HCC病人和139例单纯BCS病人临床资料,采用倾向性评分匹配... 详细信息

目的探讨血清异常凝血酶原(PIVKA-Ⅱ)、甲胎蛋白(AFP)在布-加综合征(BCS)合并肝细胞癌(HCC)中的诊断价值。方法收集2015年6月至2021年10月徐州医科大学附属医院收治的43例BCS合并HCC病人和139例单纯BCS病人临床资料,采用倾向性评分匹配法平衡两组特征差异,匹配后BCS合并HCC组31例、单纯BCS组53例。比较血清PIVKA-Ⅱ和AFP水平对BCS合并HCC的诊断效能,分析其与病人病变特征的关系。结果BCS合并HCC组血清PIVKA-Ⅱ[247(77,5259)AU/L比17(13,22)AU/L]和AFP水平[444.20(12.38,5484.00)μg/L比3.35(2.16,8.43)μg/L]均显著高于BCS组(均P<0.01)。PIVKA-Ⅱ和AFP联合检测诊断BCS合并HCC的AUC高于PIVKA-Ⅱ、AFP单独检测(0.98比0.92、0.90),其中联合检测AUC较AFP单独检测差异有统计学意义(P<0.05)。在BCS合并HCC病人中,多发HCC病灶、肿瘤长径之和≥5cm、CNLCⅢ~Ⅳ期和合并门静脉瘤栓病人的PIVKA-Ⅱ分别高于单发病灶、肿瘤长径之和<5 cm、CNLCⅠ~Ⅱ期和无门静脉瘤栓的病人(均P<0.05);单发病灶病人血清PIVKA-Ⅱ(r=0.58,P=0.018)和AFP(r=0.46,P=0.035)阳性水平与肿瘤长径正相关。结论PIVKA-Ⅱ和AFP对BCS合并HCC均具有较高的诊断价值,PIVKA-Ⅱ联合AFP可提高诊断效能,且PIVKA-Ⅱ和AFP与病人病变特征密切相关。

关键词：布-加综合征癌,肝细胞合并症异常凝血酶原甲胎蛋白倾向性匹配评分

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Ultrathin polyimide-based composites with efficient low-reflectivity electromagnetic shielding and infrared stealth performance

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Nano Research 2024年第7期17卷 6700-6712页

作者： Xu zhao Xinwei Tang yunlong Qiao Shuangshuang Li Zihang Zhang Yezi Lu Mingyang Zhu Zaiyin Hu Lijuan Long Zicheng Wang Tianxi Liu The Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Laboratory for Nano Energy CompositesJiangnan UniversityWuxi 214122China Guizhou Aerospace Wujiang Electro-mechanical Equipment Co. Ltd.No.20-5Dalian Road Aerospace Industrial ParkHuichuan DistrictZunyi 563000China School of Materials and Architectural Engineering Guizhou Normal UniversityGuiyang 550025China

Researching and manufacturing materials that possess both electromagnetic interference(EMI)shielding and infrared stealth capabilities is of great ***,an ultrathin polyimide-based nonwoven fabric with low-reflection EMI shielding/infrared stealth performance is successfully fabricated by in-situ loading of Fe_(3)O_(4)/Ag nanoparticles on the surface of polyimide(PI)fiber(PFA),and followed by bonding with a commercial Cu/Ni *** synergistic assembly of PFA and Cu/Ni promotes the rational construction of hierarchical impedance matching,inducing electromagnetic waves(EMW)to enter the composite and be dissipated as much as ***,the existence of Cu/Ni mesh on back of PFA facilitates the formation of electromagnetic resonance and destructive interference of EMW reflected from composite,leading to a lowerreflectivity(0.26)EMI shielding performance of 58 dB within 24–40 GHz at a thinner thickness(430μm).More importantly,the fluffy PFA nonwoven fabric and metal Cu/Ni mesh endow composite with good thermal insulation and low infrared emissivity,resulting in excellent infrared stealth performance in various *** a result,such excellent compatibility makes it possible to become a promising defense material to be applied in military tent for preventing electromagnetic and infrared radiation.

关键词： polyimide electromagnetic interference shielding low reflection infrared stealth

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芜菁山楂复合饮料配方优化及其对运动耐力的影响

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食品工业科技 2022年第14期43卷 401-408页

作者：赵云龙信阳农林学院河南信阳464000

以芜菁和山楂为原料,制备芜菁山楂复合饮料,并考察其对小鼠的运动耐力影响。基于单因素实验结果,采用响应面分析确定芜菁山楂复合饮料的最佳配方后,分别对低、中、高剂量组动物按照0.1、0.2和0.3 mL/10 g鼠重剂量灌胃,探讨复合饮料对小... 详细信息

以芜菁和山楂为原料,制备芜菁山楂复合饮料,并考察其对小鼠的运动耐力影响。基于单因素实验结果,采用响应面分析确定芜菁山楂复合饮料的最佳配方后,分别对低、中、高剂量组动物按照0.1、0.2和0.3 mL/10 g鼠重剂量灌胃,探讨复合饮料对小鼠运动耐力的影响。结果显示,该复合饮料的最佳配方为山楂浸提液与芜菁多糖溶液的体积比3:1,赤藓糖醇用量3.4%,柠檬酸用量0.23%,复合稳定剂(m羧甲基纤维素钠:m黄原胶:m海藻酸钠=2:1:1)用量0.06%,所得饮料色泽均一,酸甜适中,具有芜菁与山楂的混合风味,静置后无明显沉淀,感官得分为(88.9±0.4)分。与空白对照组相比,所有饮料灌胃组均可显著延长小鼠的运动时间(P<0.05,P<0.01),减少运动时体内的乳酸累积和蛋白质或氨基酸分解(P<0.05,P<0.01),并可提高超氧化物歧化酶(Superoxide dismutase,SOD)和谷胱甘肽过氧化物酶(Glutathione peroxidase,GSH-Px)(P<0.05,P<0.01)的活性,因此有助于提高机体的运动耐力。

关键词：芜菁山楂复合饮料配方响应面分析运动耐力

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Determination of specific activity of ^(230)Th in uranium ore samples

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Chinese Science Bulletin 2000年第3期45卷 264-267页

作者： zhao yunlong, GU Dingxiang, LI Ronghui, DENG Gang, LIANG Yutang, WU zhaohui, HUANG Qiuhong, TIAN Guiying, WANG Bin & CHEN CaifangBeijing Research Institute of Uranium Geology, Beijing 100029, China Beijing Research Institute of Uranium Geology Beijing China

A new method suitable for determining specific activity of 230Th in uranium ore samples is built. The method is characterized by adding the 230Th/ 232Th standard dilution agent with lower activity ratio (Its 230Th/ 232Th activity ratio and Th have been known) to the samples and using isotopic dilution analysis. The method can be applied to analyses of 230Th specific activity in various 230Th/ 232Th activity ratio samples. The precision can also be improved.

关键词： 230Th/ 232Th activity ratio 230Th specific activity activity ratio dilution analysis uranium ores.

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中国新诗在英语世界的翻译与接受(1936-2017)——基于英语世界“引进”与中国官方“外推”活动的对比研究

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中国比较文学 2019年第2期 100-121页

作者：赵云龙北京外国语大学英语学院

中国新诗在英语世界的翻译活动,至今已经有80余年的历史。在此期间,中国新诗英译活动在不同历史时期具有怎样的特点?其总体又具有怎样的特点?译本的接受情况如何?在以上三个方面,英语世界"引进"与中国官方"外推"活动之间分别有何异同?... 详细信息

中国新诗在英语世界的翻译活动,至今已经有80余年的历史。在此期间,中国新诗英译活动在不同历史时期具有怎样的特点?其总体又具有怎样的特点?译本的接受情况如何?在以上三个方面,英语世界"引进"与中国官方"外推"活动之间分别有何异同?为解答以上问题,本文以美国俄亥俄州立大学中国现代文学与文化资源中心和英语国家亚马逊网站为主要译本信息来源,将中国新诗的英译历程划分为四个时期并分别加以梳理,总结出各个时期的特点与整体特点。同时利用从多种学术数据库和英语国家亚马逊网站、美国好读网等平台中获取的译评,对英译中国新诗的接受情况进行初步考察。希望借此研究,可以为中国文学外译及其研究提供一点启示。

关键词：中国新诗英语世界翻译接受

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