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| 1 | Atomistic Surface Passivation of CH_(3)NH_(3)PbI_(3) Perovskite Single Crystals for Highly Sensitive Coplanar-Structure X-Ray Detectors显示文摘Organic-inorganic halide perovskites(OIHPs)are recognized as the promising next-generation X-ray detection materials.However,the device performance is largely limited by the ion migration issue of OIHPs.Here,we reported a simple atomistic surface passivation strategy with methylammonium iodide(MAI)to remarkably increase the ion migration activation energy of CH_(3)NH_(3)PbI_(3)single crystals.The amount of MAI deposited on the crystal surface is finely regulated by a self-assemble process to effectively suppress the metallic lead defects,while not introducing extra mobile ions,which results in significantly improved dark current stability of the coplanar-structure devices under a large electric field of 100Vmm^(-1).The X-ray detectors hence exhibit a record-high sensitivity above 700,000μC Gy^(-1)_(air) cm^(-2)under continuum X-ray irradiation with energy up to 50 keV,which enables an ultralow X-ray detection limit down to 1.5 nGy_(air)s^(-1).Our findings will allow for the dramatically reduced X-ray exposure of human bodies in medical imaging applications. | Yilong Song Liqi Li Weihui Bi Mingwei Hao Yifei Kang Anran Wang Zisheng Wang Hanming Li Xiaohui Li Yanjun Fang Deren Yang Qingfeng Dong | 2020 | Research2020，，1： | 5 |
| 2 | Syndecan-2, negatively regulated by miR-20b-5p, contributes to 5-fluorouracil resistance of colorectal cancer cells via the JNK/ERK signaling pathway显示文摘5-Fluorouracil (5-FU) resistance has been long considered as an obstacle to the efficacy of chemotherapy in colorectal cancer (CRC). In this study, we demonstrated the role of miR-20b-5p-regulated syndecan-2 (SDC2) in 5-FU resistance of CRC cells. 5-FU-resistant SW480 CRC cells were established by treatment of SW480 cells with stepwise increase of 5-FU concentration. The results showed that SDC2 was expressed significantly higher in SW480/5-FU cells than in SW480/WT cells as revealed by quantitative real-time polymerase chain reaction and western blot analysis. MTT assay and BrdU assay showed that SDC2 overexpression led to increased cell survival rate, while SDC2 knockdown reversed the drug resistance of SW480/5-FU cells. Wound healing and transwell invasion assays revealed that knockdown of SDC2 inhibited the migratory and invasive ability of SW480/5-FU cells. Moreover, animal experiments indicated that si-SDC2 plays a suppressive role in tumor growth in vivo. We also confirmed that miR-20b-5p interacted with SDC2, which reversed the effect of SDC2 in SW480/5-FU cells via the c-Jun N-terminal kinase (JNK)/extracellular regulated protein kinases (ERK) signaling pathway. These findings showed that JNK/ERK signaling pathway is involved in miR-20b-5p/SDC2 axis-mediated 5-FU resistance in SW480/5-FU cells, indicating that the miR-20b-5p/SDC2 axis is a potential target for reversing 5-FU resistance in CRC. | Ruheng Hua Yan Zhang Xiyue Yan Dong Tang Xiaolong Li Qingfeng Ni Daorong Wang Jianwei Zhu | 2021 | Acta Biochimica et Biophysica Sinica2021，53，11： | 4 |
| 3 | Modulating the optical and electrical properties of MAPbBr_(3) single crystals via voltage regulation engineering and application in memristors显示文摘Defect density is one of the most significant characteristics of perovskite single crystals(PSCs)that determines their optical and electrical properties,but few strategies are available to tune this property.Here,we demonstrate that voltage regulation is an efficient method to tune defect density,as well as the optical and electrical properties of PSCs.A three-step carrier transport model of MAPbBr_(3) PSCs is proposed to explore the defect regulation mechanism and carrier transport dynamics via an applied bias.Dynamic and steady-state photoluminescence measurements subsequently show that the surface defect density,average carrier lifetime,and photoluminescence intensity can be efficiently tuned by the applied bias.In particular,when the regulation voltage is 20 V(electrical poling intensity is 0.167 Vμm^(−1)),the surface defect density of MAPbBr_(3) PSCs is reduced by 24.27%,the carrier lifetime is prolonged by 32.04%,and the PL intensity is increased by 112.96%.Furthermore,a voltage-regulated MAPbBr_(3) PSC memristor device shows an adjustable multiresistance,weak ion migration effect and greatly enhanced device stability.Voltage regulation is a promising engineering technique for developing advanced perovskite optoelectronic devices. | Jun Xing Chen Zhao Yuting Zou Wenchi Kong Zhi Yu Yuwei Shan Qingfeng Dong Ding Zhou Weili Yu Chunlei Guo | 2020 | Light(Science & Applications)2020，9，1： | 3 |
| 4 | A Novel Effective Way of Comprising aβ-Nucleating Agent in Isotactic Polypropylene(i-PP):Polymerization Dispersion and Polymer Characterization显示文摘 | Yi Qingfeng Wen Xiaojing Dong Jinyong | 2008 | Polymer2008，49，23： | 1 |
| 5 | A Novel Effective Way of Comprising a B-Nucleating Agent in Isotactic Polypropylene(APP): Polymerization Dispersion and Polymer Characterization 显示文摘 | Yi Qingfeng Wen Xiaojing Dong Jinyong | 2008 | Polymer2008，49，23： | 1 |
| 6 | Effects of substituents on the third ordernoniinearopticalproperties of po显示文摘 | Dong Yanmao Lu Jianmei Xu Qingfeng | 2010 | Synthetic Met- als2010，160，56： | 1 |
| 7 | A joint call for actions to advance taxonomy in China显示文摘Taxonomy plays an important role in understanding the origin, evolution, and ecological functionality of biodiversity. There are large number of unknown species yet to be described by taxonomists, which together with their ecosystem services cannot be effectively protected prior to description. Despite this, taxonomy has been increasingly underrated insufficient funds and permanent positions to retain young talents. Further, the impact factordriven evaluation systems in China exacerbate this downward trend, so alternative evaluation metrics are urgently necessary. When the current generation of outstanding taxonomists retires,there will be too few remaining taxonomists left to train the next generation. In light of these challenges, all co-authors worked together on this paper to analyze the current situation of taxonomy and put out a joint call for immediate actions to advance taxonomy in China. | Chaodong Zhu Arong Luo Ming Bai Michael COrr Zhonge Hou Siqin Ge Jun Chen Yibo Hu Xuming Zhou Gexia Qiao Hongzhi Kong Limin Lu Xiaohua Jin Lei Cai Xinli Wei Ruilin Zhao Wei Miao Qingfeng Wang Zhongli Sha Qiang Lin Meng Qu Jianping Jiang Jiatang Li Jing Che Xuelong Jiang Xiaoyong Chen Lianming Gao Zongxin Ren Chunlei Xiang Shixiao Luo Donghui Wu Dong Liu Yanqiong Peng Tao Su Chenyang Cai Tianqi Zhu Wanzhi Cai Xingyue Liu Hu Li Huaijun Xue Zhen Ye Xuexin Chen Pu Tang Shujun Wei Hong Pang Qiang Xie Feng Zhang Feng Zhang Xianjin Peng Aibing Zhang Taiping Gao Changfa Zhou Chen Shao Libin Ma Zhaoming Wei Yunxia Luan Ziwei Yin Wu Dai Cong Wei Xiaolei Huang Jingxian Liu Xiangsheng Chen Tianci Yi Zhisheng Zhang Zhulidezi Aishan Qin Li Hongying Hu | 2022 | Zoological Systematics2022，47，3： | 1 |
| 8 | Stable and Highly Flexible Perovskite Solar Cells with Power Conversion Efficiency Approaching 20% by Elastic Grain Boundary Encapsulation显示文摘Here,we show that flexible perovskite solar cells(PSCs)with high operational stability and power conversion efficiency(PCE)approaching 20%were achieved by elastic grain boundary(GB)encapsulation.An introduction of trimethyltrivinylcyclotrisiloxane(V3D3)and solvent annealing(SA)resulted in an in situ cross-linking reaction between GBs and enlarged grain size that enabled oriented charge-transport properties to be achieved synchronously,leading to reduced sheet resistance with a high fill factor(FF)up to 82.93%in flexible PSCs. | Chengda Ge Ziqi Yang Xiaoting Liu Yilong Song Anran Wang Qingfeng Dong | 2021 | CCS Chemistry2021，3，7： | 1 |
| 9 | In-Reactor Compounding Metallocenic Isotactic Poly (Propylene)/Nucle- ationg Agent Compositions by Employing the Nucleation Agent as a Catalyst Support显示文摘 | Yi Qingfeng Wen Xiaojing Dong Jinyong | 2007 | Macromol React Eng2007，1，3： | 1 |
| 10 | Surface modification of steels and magnesium alloy by high current pulsed electron beam显示文摘 | Shengzhi Hao Bo Gao Aimin Wu Jianxin Zou Ying Qin Chuang Dong Jian An Qingfeng Guan | 2005 | Nuclear Inst and Methods in Physics Research B2005，，3： | 1 |
| 11 | Impact of Untreated Sedimentation Tank Sludge Water Recycle on Water Quality During Treatment of Low Turbidity Water显示文摘The overall purpose of this research is to examine the impact of untreated sedimentation tank sludge water( USTSW) recycle on water quality during treatment of low turbidity water in coagulation—sedimentation processes. 950 m L of raw water and different concentrations of 50 m L USTSW are injected into six 1 000 m L beakers without coagulant.The results indicate that USTSW characterized as accumulated suspended solids and organic matter has active ingredients,which possess the equivalent function of coagulant. The optimal blended water turbidity is in the range of 10-20 NTU,within which USTSW recycle achieves the highest save coagulant rate. The mechanism of strengthening coagulation effect when USTSW recycle mainly depends on the chemical effect and physical effect. What is more,through scanning electron microscopy( SEM),it is found that the floc structures with USTSW recycle are more compact than those without USTSW recycle. Besides,the water quality parameters of color,NH3-N,CODMn,UV254,total aluminum,total manganese when USTSW recycle is better than the raw water without recycle,indicating that USTSW recycle can improve water quality with strengthening coagulation effect. | Ronggang Xu Yongpeng Xu Fuyi Cui Li He Dong Wang Qingfeng Su | 2015 | Journal of Harbin Institute of Technology(New Series)2015，22，4： | 1 |
| 12 | Temperature–stress fields and related phenomena induced by a high current pulsed electron beam显示文摘 | Ying Qin Jianxin Zou Chuang Dong Xiaogang Wang Aimin Wu Yue Liu Shengzhi Hao Qingfeng Guan | 2004 | Nuclear Inst and Methods in Physics Research B2004，，4： | 1 |
| 13 | A novel effective way of comprising aβ-nucleating agent in isotactic polypropylene(i-PP):Polymerized dispersion and polymer characterization显示文摘 | Yi Qingfeng Wen Xiaojing Dong Jinyong | 2008 | Polymer2008，49，23： | 1 |
| 14 | In-reactor compounding metallocenic isotactic poly(propylene)/nucleation agent compositions by employing the nucleation agent as a catalyst support显示文摘 | Yi Qingfeng Wen Xiaojing Dong Jinyong | 2007 | Macromol React Eng2007，1，3： | 1 |
| 15 | The clinicopathological significance and relationship of G li1, MDM 2 and p53 expression in resectable pancreatic cancer显示文摘 | Weiwei Sheng Ming Dong Jianping Zhou Xin Li QingFeng Liu Qi Dong Feng Li | 2014 | Histopathology2014，，4： | 1 |
| 16 | Surface modification of steels and magnesium alloy by high current pulsed electron beam显示文摘 | Hao Shengzhi Gao Bo Wu Aimin Zou Jianxin Qin Yin Dong Chuang An Jian Guan Qingfeng | 2005 | Nuclear Instruments and Methods in Physics Research B2005，240，： | 1 |
| 17 | Improvement of Mechanical Properties of Al2O3/Ti3SiC2 Multilayer Ceramics by Adding SiC Whiskers into Al2O3 Layers显示文摘 | Zan Qingfeng Dong Limin Wang Chen | 2007 | Ceramics International2007，33，3： | 1 |
| 18 | Synergistic inhibition effect of 2-phenylethanol and ethanol on bioproduction of natural 2-phenylethanol by Saccharomyces cerevisiae and process enhancement显示文摘 | Wang Hang Dong Qingfeng Guan Ang | 2011 | Journal of Bioscience and Bioengineering2011，112，1： | 1 |
| 19 | A Novel Effective Way of Comprising a β-Nucleating Agent in Isotactic Polypropylen(i-PP): Polymerized Dispersion and Polymer Characterization 显示文摘 | Yi Qingfeng Wen Xiaojing Dong Jinyong | 2008 | Polymer2008，49，23： | 1 |
| 20 | Late Cretaceous K-rich rhyolitic crystal tuffs from the Chuduoqu area in Eastern Qiangtang subterrane:evidence for crustal thickening of the central Tibetan Plateau prior to India–Asia collision显示文摘In order to constrain whether the Lhasa–Qiangtang collision contributed to an early crustal thickening of the central Tibetan Plateau prior to the India–Asia collision,we present zircon LA–ICP–MS U–Pb ages,wholerock geochemistry,and zircon Hf isotopic compositions of the newly discovered rhyolitic crystal tuffs from the Chuduoqu area in the eastern Qiangtang subterrane,central Tibet.Zircon U–Pb dating suggests that the Chuduoqu rhyolitic crystal tuffs were emplaced at ca.68 Ma.The Chuoduoqu rhyolitic crystal tuffs display high SiO_(2) and K2 O,and low MgO,Cr,and Ni.Combined with their zircon Hf isotopic data,we suggest that they were derived from partial melting of the juvenile lower crust,and the magma underwent fractional crystallization and limited upper continental crustal assimilation during its evolution prior to eruption.They should be formed in a post-collisional environment related to lithospheric mantle delamination.The Chuduoqu rhyolitic crystal tuffs could provide important constraints on the Late Cretaceous crustal thickening of the central Tibetan Plateau caused by the Lhasa–Qiangtang collision. | Yonggang Sun Bile Li Fengyue Sun Qingfeng Ding Junlin Dong Ye Qian Yujin Li Zhen Yao | 2022 | Acta Geochimica2022，41，1： | 0 |
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