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| 1 | Analysis of TM/TE mode enhancement and droop reduction by a nanoporous n-AIGaN underlayer in a 290 nm UV-LED显示文摘A full structure 290 nm ultraviolet light emitting diode(UV-LED)with a nanoporous n-AlGaN underlayer was fabricated by top via hole formation followed by high-voltage electrochemical etching.The 20 to 120 nm nanopores were prepared in regular doped n-AlGaN by adjusting the etching voltage.The comparison between the Raman spectrum and the photoluminescence wavelength shows that the biaxial stress in the nanoporous material is obviously relaxed.The photoluminescence enhancement was found to be highly dependent on the size of the pores.It not only improves the extraction efficiency of top-emitting transverse-electric(TE)-mode photons but also greatly improves the efficiency of side emitting tran sverse-magnetic(TM)-mode photons.This leads to the polarization change of the side-emitting light from-0.08 to-0.242.The intensity of the electroluminescence was increased by 36.5%at 100 mA,and the efficiency droop at high current was found to decrease from 61%to 31%. | YUFENG LI CHENYU WANG YE ZHANG PENG HU SHENGNAN ZHANG MENGQI DU XILIN SU QIANG LI FENG YUN | 2020 | Photonics Research2020，8，6： | 2 |
| 2 | The miR-27a-3p/FTO axis modifies hypoxia-induced malignant behaviors of glioma cells显示文摘Glioblastoma multiforme(GBM)is one of the most malignant types of central nervous system(CNS)tumors.N6-methyladenine(m6A)RNA modification is a main type of RNA modification in eukaryotic cells.In this study,we find that the m6A RNA methylation eraser FTO is dramatically downregulated in glioma samples and cell lines,particularly in intermediate and core regions and hypoxia-challenged glioma cells.In vitro,FTO overexpression inhibits the hypoxia-induced capacities of glioma cells to proliferate,migrate and invade,and decreases the percentage of cells with m6A RNA methylation.In vivo,FTO overexpression inhibits tumor growth in the xenograft model and decreases the protein levels of migration markers,including Vimentin and Twist.miR-27a-3p is upregulated within glioma intermediate and core regions and hypoxia-challenged glioma cells.miR-27a-3p inhibits the expression of FTO via direct binding to FTO.miR-27a-3p overexpression promotes hypoxia-challenged glioma cell aggressiveness,whereas FTO overexpression partially diminishes the oncogenic effects of miR-27a-3p overexpression.FTO overexpression promotes the nuclear translocation of FOXO3a and upregulates the expression levels of the FOXO3a downstream targets BIM,BNIP3,BCL-6,and PUMA,possibly by interacting with FOXO3a.Conclusively,FTO serves as a tumor suppressor in glioma by suppressing hypoxia-induced malignant behaviors of glioma cells,possibly by promoting the nuclear translocation of FOXO3a and upregulating FOXO3a downstream targets.miR-27a-3p is a major contributor to FTO downregulation in glioma under hypoxia. | Peng Du Li Meng Xinbin Liao Yi Liu Xin Mo Mengqi Gong Yiwei Liao | 2023 | Acta Biochimica et Biophysica Sinica2023，55，1： | 1 |
| 3 | Controlled crystal orientation of two-dimensional Ruddlesden-Popper halide perovskite films for solar cells显示文摘Metal halide perovskite solar cells have attracted considerable attention because of their high-power conversion efficiency and costeffective solution-processable fabrication;however,they exhibit poor structural stability.Two-dimensional(2D)Ruddlesden-Popper(RP)perovskites could address the aforementioned issue and present excellent stability because of their hydrophobic organic spacer cations.However,the crystallographic orientation of 2D crystals should be perpendicular to the bottom substrates for charges to transport fast and be collected in solar cells.Moreover,controlling the crystallographic orientation of the 2D RP perovskites prepared by the solution process is difficult.Herein,we reviewed the progress of recent research regarding 2D RP perovskite films with the focus on the crystallographic orientation mechanism and orientation controlling methods.Furthermore,the current issues and prospects of 2D RP perovskites in the photovoltaic field were discussed to elucidate their development and application in the future. | Jiuyao Du Mengqi Zhang Jianjun Tian | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，1： | 1 |
| 4 | Digital Empowerment of Governance System Innovation in Guangdong-Hong Kong-Macao Greater Bay Area Urban Agglomeration显示文摘The governance of the Guangdong-Hong Kong-Macao Greater Bay Area urban agglomeration has cross-border and cross-system characteristics.The development of the digital age and increasing competition in metropolitan areas have left urban agglomeration in urgent need of innovation in their governance systems.Digital empowerment is a means of technological change that acts on the development of things,through digital support,Integrating inter-governmental coordination governance,common market governance,refined social governance,and cultural integration governance throughout the governance system of the Guangdong-Hong Kong-Macao Greater Bay Area urban agglomeration,to enable the Guangdong-Hong Kong-Macao Greater Bay Area to adapt to the development of the digital era,cope with an external governance environment fraught with uncertainties,meet the diverse governance needs of urban agglomeration,and achieve integrated regional development.This paper explores the innovative path of digital urban agglomeration governance with characteristics of the Guangdong-Hong Kong-Macao Greater Bay Area,in order to better promote the development of modernized governance in urban agglomeration. | DU Mengqi YIN Yifen CHEN Qingyun Lam Fat Iam | 2022 | US-China Law Review2022，19，10： | 0 |
| 5 | Role of phosphorus on the biogeochemical behavior of cadmium in the contaminated soil under leaching and pot experiments显示文摘Phosphorus(P)is involved in various biochemical reactions in plant growth,so it is beneficial to plants growing in soils contaminated by metals,including cadmium(Cd).However,few studies have reported on the mechanistic roles of P in mitigating Cd toxicity to ryegrass root,and especially in alleviating the disruption of the mitochondrial function of living cells.In this study,the physiological and biochemical mechanisms associated with ryegrass growth under various Cd and P treatments were investigated using leaching and pot systems.The concentration of Cd in soil leachates showed a significantly positive relationship with redox potential(P<0.05),but negative relationship(P<0.05)with leachate pH values and dissolved organic carbon(DOC),indicating that exogenous P addition(as H_(2)PO_(4)*)may decrease Cd leaching from contaminated soil.Compared to the control(without P addition),the cumulative Cd content was reduced by 53.3%and 64.5%in the soil leachate with exogenous P application(20 mg/L and 80 mg/L),respectively.Notably,application of P decreased the Cd concentrations in the symplastic fractions and increased the Cd concentrations in the apoplastic fractions in root tips,which may help to alleviate Cd stress to the protoplast.Moreover,exogenous P was found to play a positive role in mitochondrial function and Ca^(2+)variation in root cells under Cd stress,which provides novel insights into the mechanisms of exogenous P in alleviating plant Cd injury. | Hui Jia YifanWu Mengqi Zhang Jinhui Ye Daolin Du He Wang | 2024 | Journal of Environmental Sciences2024，，3： | 0 |
| 6 | Intrinsic variations of ultrathin hafnium oxide-based ferroelectric tunnel junctions induced by ferroelectric-dielectric phase fluctuations显示文摘Hafnium oxide(HfO_(2))-based ferroelectrics(FEs)are promising materials for low-power applications such as the Internet of Things and artificial neural network,due to their fully complementary-metal-oxide-semiconductor compatibility and advanced thickness scalability[1].The ferroelectric tunnel junction(FTJ)developed by the integration of FE HfO_(2) on Si/SiO_(2) provides a feasible route to realize high-density and energy-efficient nonvolatile memory[2]. | Pengying CHANG Mengqi FAN Gang DU Xiaoyan LIU Yiyang XIE | 2023 | Science China(Information Sciences)2023，66，10： | 0 |
| 7 | A Cyanine-based Liposomal Nanophotosensitizer for Enhanced Cancer Chemo-Photodynamic Therapy显示文摘Currently,chemotherapy is one of the most important treatment modalities for malignant tumors in the clinic,however,it exhibits some shortcomings,such as poor selectivity,limited efficacy and serious adverse effects.Therefore,synergistic therapy and accurate drug delivery at tumor sites become a promising strategy for achieving tumor eradication.Herein,a smart NIR fluorescence imaging-guided nanoliposome was fabricated by encapsulating a chemotherapeutic drug(doxorubicin,DOX),liposomes(L)and a near-infrared(NIR)photosensitizer(CY)to form L@CY@DOX,which could realize enhanced therapeutic efficacy of chemo-PDT in cancer therapy(PDT=photodynamic therapy).L@CY@DOX can induce mitochondrial apoptosis and produce severe toxicity at the cellular level,and L@CY@DOX can enrich in the tumor site,which significantly induces tumor death.In vitro and in vivo studies demonstrated that L@CY@DOX exhibited great antitumor efficacy compared with each one of these monotherapies,indicating that the combination of chemotherapy and PDT possessed potential development prospects and is anticipated in clinical application. | LI Mengqi MA He SHI Chao ZHANG Han LONG Saran SUN Wen DU Jianjun FAN Jiangli PENG Xiaojun | 2021 | Chemical Research in Chinese Universities2021，37，4： | 0 |
| 8 | Molecular Scaffold Growth of Two-Dimensional, Strong Interlayer-Bonding-Layered Materials显示文摘Currently,most two-dimensional(2D)materials that are of interest to emergent applications have focused on van der Waals–layered materials(VLMs)because of the ease with which the layers can be separated(e.g.,graphene).Strong interlayer-bonding-layered materials(SLMs)in general have not been thoroughly explored,and one of the most critical present issues is the huge challenge of their preparation,although their physicochemical proper-ty transformation should be richer than VLMs and deserves greater attention.MAX phases are a classi-cal kind of SLM. | Mengqi Zeng Yunxu Chen Enze Zhang Jiaxu Li Rafael G.Mendes Xiahan Sang Shulin Luo Wenmei Ming Yuhao Fu Mao-Hua Du Lijun Zhang David S.Parker Raymond R.Unocic Kai Xiao Chenglai Wang Tao Zhang Yao Xiao Mark H,Rummeli Faxian Xiu Lei Fu | 2019 | CCS Chemistry2019，1，1： | 0 |
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