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| 1 | Preparation and electrochemical properties of re-synthesized LiCoO_2 from spent lithium-ion batteries显示文摘A new idea for reuse of the cathode materials of lithium-ion batteries(LIBs) is investigated to develop an environmentally friend-ly process for recycling spent batteries.LiCoO2 is re-synthesized from spent LIBs by leaching and a sol-gel method calcined at high temperature.Thermogravimetric analysis(TGA) and differential scanning calorimetry(DSC) are employed to study the re-actions occurring calcination that are responsible for the weight losses.X-ray diffraction(XRD) and scanning electron microscopy(SEM) are used to determine the structures of the LiCoO2 powders.It was found that a pure phase of LiCoO2 can be obtained by the re-synthesis process.Cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS) are used to evaluate the electrochemical properties of the LiCoO2 powders.The discharge capacity of re-synthesized LiCoO2 is 137 mAh g-1 at the 0.1 C rate,and the capacity retention of the re-synthesized LiCoO2 is 97.98% after 20 cycles at the 0.1 C rate,and 88.14% after 40 cy-cles.The results indicate that the re-synthesized LiCoO2 displays good charge/discharge performance and cycling behavior. | LI Li CHEN RenJie ZHANG XiaoXiao WU Feng GE Jing XIE Man | 2012 | Chinese Science Bulletin2012，57，32： | 4 |
| 2 | Continuous and comprehensive atmospheric observations in Beijing:a station to understand the complex urban atmospheric environment显示文摘Due to profound impact on climate and human health,air quality has attracted attention from all levels of the civil society.The key step in the provision of required tools for the society to tackle the complex air quality problem is to characterize it in a comprehensive manner with a long-term perspective.Here,we describe a continuous and comprehensive observation station and its accompanying state-ofthe-art instrumentation that was established to investigate the complex urban atmospheric environment in a rapidly developing Chinese Megacity.The station,located in downtown Beijing,aims to study air quality by identifying the major atmospheric pollutants and key processes determining their formation and loss mechanisms.A few hundreds of parameters are continuously measured with the state-of-the-art instruments,including trace gas concentrations,aerosol particle size distributions,and mass concentrations,covering aerosol particle chemical composition from molecules to micrometer-sized aerosol particles.This produced long-term,comprehensive big data with around 1�10^(11)bytes per year.In this paper,we provide an overview on the facilities of the station,the instrumentation used,the workflow of continuous observations and examples of results from 2018 to 2019 and a basis for establishing a modern long-term,comprehensive atmospheric urban observation station in other megacities. | Yongchun Liu Chao Yan Zemin Feng Feixue Zheng Xiaolong Fan Yusheng Zhang Chang Li Ying Zhou Zhuohui Lin Yishou Guo Ying Zhang Li Ma Wenshuo Zhou Zhikun Liu Lubna Dada Kaspar Dallenbach Jenni Kontkanen Runlong Cai Tommy Chan Biwu Chu Wei Du Lei Yao Yonghong Wang Jing Cai Juha Kangasluoma Tom Kokkonen Joni Kujansuu Anton Rusanen Chenjuan Deng Yueyun Fu Rujing Yin Xiaoxiao Li Yiqun Lu Yiliang Liu Chaofan Lian Dongsen Yang Weigang Wang Maofa Ge Yuesi Wang Douglas R.Worsnop Heikki Junninen Hong He Veli-Matti Kerminen Jun Zheng Lin Wang Jingkun Jiang Tuukka Petaja Federico Bianchi Markku Kulmala | 2020 | Big Earth Data2020，4，3： | 3 |
| 3 | Bioeffects of different functionalized silica nano-particles on HaCaT cell line显示文摘The bioeffects of silica nanoparticles (SiNP), phosphorylate-terminated nanoparticles (PO4- NP) and amino-terminated nanoparticles (NH2NP) on HaCaT cell line have been studied in this paper. The effects of the three kinds of functionalized silica nanoparticles on adherence, proliferation and cycle of HaCaT cells have been investigated. And the cel- lular uptake of the three kinds of functionalized silica nanoparticles by HaCaT cells has also been exam- ined. Results indicated that the bioeffects of the three kinds of functionalized nanoparticles on HaCaT cells were concentration-dependent. And the three kinds of functionalized nanoparticles all exhibited well bio- compatibility if the concentration was below 0.2 μg/μL. While the cytotoxicities of the three kinds of function- alized nanoparticles on HaCaT cells would increase with the increasing of nanoparticles concentration, and the following order was observed: NH2NP > SiNP > PO4NP. In addition, the quantity and rapidity of cellular uptake of nanoparticles by HaCaT cells were diverse due to the different functional groups. Under the same conditions, NH2NP was most and fast internalized by HaCaT cells, followed by SiNP, and PO4NP was the least and slowest. These results provided theoretical foundation for the safe applica- tion and further modification of silica nanoparticles, which could broaden the application of silica nano- particles in biomedicine. | HE Xiaoxiao LIU Fang WANG Kemin GE Jia QIN Dilan GONG Ping TAN Weihong | 2006 | Chinese Science Bulletin2006，51，16： | 2 |
| 4 | Photo-induced macro/mesoscopic scale ion displacement in mixed-halide perovskites:ring structures and ionic plasma oscillations显示文摘Contrary to the common belief that the light-induced halide ion segregation in a mixed halide alloy occurs within the illuminated area,we find that the Br ions released by light are expelled from the illuminated area,which generates a macro/mesoscopic size anion ring surrounding the illuminated area,exhibiting a photoluminescence ring.This intriguing phenomenon can be explained as resulting from two counter-balancing effects:the outward diffusion of the light-induced free Br ions and the Coulombic force between the anion deficit and surplus region.Right after removing the illumination,the macro/mesoscopic scale ion displacement results in a built-in voltage of about 0.4 V between the ring and the center.Then,the displaced anions return to the illuminated area,and the restoring force leads to a damped ultra-low-frequency oscillatory ion motion,with a period of about 20-30 h and lasting over 100 h.This finding may be the first observation of an ionic plasma oscillation in solids.Our understanding and controlling the'ion segregation'demonstrate that it is possible to turn this commonly viewed'adverse phenomenon'into novel electronic applications,such as ionic patterning,self-destructive memory,and energy storage. | Xiaoxiao Sun Yong Zhang Weikun Ge | 2022 | Light(Science & Applications)2022，11，10： | 1 |
| 5 | Confinement fluorescence effect of an aggregation-induced emission luminogen in crystalline polymer显示文摘Despite the impressive progress of stimuli-responsive fluorescent materials,little is known about the influence of confinement created by crystalline polymer over the fluorescence properties of fluorescent molecules.The effects of confinement on the fluorescence of an aggregation-induced emission luminogen(AIEgen)are investigated using computational simulations,which reveal that the confined space induces the AIEgens to take a more planar conformation,resulting in a red-shifted emission spectrum.With this property,the study is extended to explore the confinement generated by various polymer crystalline forms,and it is shown that different fluorescence colors are activated.This confinement fluorescence effect is attributed to the different spatial dimensions of the polymer amorphous layer between lamellar crystals where the AIEgens are located.These results indicate the immediate association between crystalline structure and fluorescence signals,activating unprecedented photophysical properties of luminescent materials,and also providing the possibility for crystalline structure visualization,it is important for the many polymer crystallization processes occurring in the materials processing. | Lan Zhou Linlin Zheng Xiaoxiao Yu Mengyue Gao Chengjian Xu Yifan Ge Tianxiang Bai Jin Wen Yanhua Cheng Meifang Zhu | 2023 | Aggregate2023，4，5： | 0 |
| 6 | Hard nanocrystalline gold materials prepared via high-pressure phase transformation显示文摘As one of the important materials,nanocrystalline Au(n-Au)has gained numerous interests in recent decades owing to its unique properties and promising applications.However,most of the current n-Au thin films are supported on substrates,limiting the study on their mechanical properties and applications.Therefore,it is urgently desired to develop a new strategy to prepare nAu materials with superior mechanical strength and hardness.Here,a hard n-Au material with an average grain size of~40 nm is prepared by cold-forging of the unique Au nanoribbons(NRBs)with unconventional 4H phase under high pressure.Systematic characterizations reveal the phase transformation from 4H to face-centered cubic(fcc)phase during the cold compression.Impressively,the compressive yield strength and Vickers hardness(HV)of the prepared n-Au material reach~140.2 MPa and~1.0 GPa,which are 4.2 and 2.2 times of the microcrystalline Au foil,respectively.This work demonstrates that the combination of high-pressure cold-forging and the in-situ 4H-to-fcc phase transformation can effectively inhibit the grain growth in the obtained n-Au materials,leading to the formation of novel hard n-Au materials.Our strategy opens up a new avenue for the preparation of nanocrystalline metals with superior mechanical property. | Chenlong Xie Wenxin Niu Penghui Li Yiyao Ge Jiawei Liu Zhanxi Fan Xiaoxiao Liu Ye Chen Ming Zhou Zihe Li Mengdong Ma Yonghai Yue Jing Wang Li Zhu Kun Luo Yang Zhang Yingju Wu Lin Wang Bo Xu Hua Zhang Zhisheng Zhao Yongjun Tian | 2022 | Nano Research2022，15，7： | 0 |
| 7 | Review:Aggregation-Induced Emission——A New Tool to Study Polymer Thermodynamics and Kinetics显示文摘Polymer thermodynamics and kinetics are important components in the basic theory of polymer physics, which provide critical support for polymer processing and molding. As an important thermal analysis technology, differential scanning calorimetry(DSC) is a key way to explore the molecular motion of polymer chains, molecular structure, and condensed structure, greatly promoting the development of polymer materials. However, this technique is limited by its ambiguous results, because of inaccurate heat flow measurement and high parameter dependence. As an alternative strategy, aggregation-induced emission luminogens(AIEgens) have been extensively applied in various targets analysis and process monitoring, owing to their weak intermolecular interactions and highly twisted conformation. The optical properties of AIEgens are highly sensitive to the variations of the polymer microenvironment, including characteristic transition, crosslinking reaction, crystallization behavior, and phase separation. In this review, the progress of AIE technology in visualizing polymer molecular motion and structure evolution is summarized, compensating for the limitation of the traditional DSC method to facilitate further research in polymer science and engineering. | Yifan Ge Xiaoxiao Yu Junyan Zhang Lan Zhou Yanhua Cheng Meifang Zhu | 2022 | Journal of Harbin Institute of Technology(New Series)2022，29，6： | 0 |
| 8 | Generation of Hepatitis B virus PreS2-S antigen in Hansenula polymorpha显示文摘Despite the long availability of a traditional prophylactic vaccine containing the HBV surface antigen(HBsA g) and aluminum adjuvant, nearly 10% of the population remains unable to generate an effective immune response. Previous studies have indicated that hepatitis B virus(HBV) PreS 2-S is abundant in T/B cell epitopes, which induces a stronger immune response than HBsA g, particularly in terms of cytotoxic T lymphocyte(CTL) reaction. In the current study, the HBV PreS 2-S gene encoding an extra26 amino acids(PreS 2 C-terminus) located at the N-terminus of HBsA g was cloned into the pV CH1300 expression vector. Pre S2-S expressed in the methylotrophic yeast, Hansenula polymorpha, was produced at a yield of up to 250 mg/L. Subsequent purification steps involved hydrophobic adsorption to colloidal silica, ion-exchange chromatography and density ultracentrifugation. The final product was obtained with a total yield of ~15% and purity of ~99%. In keeping with previous studies, ~22 nm viruslike particles were detected using electron microscopy. The generated PreS 2-S antigen will be further studied for efficacy and safty in animals. | Xiaowei Xu Sulin Ren Xiaoxiao Chen Jun Ge Zhenxing Xu Hongying Huang Honglin Sun Yue Gu Tong Zhou Jianqiang Li Hanmei Xu | 2014 | Virologica Sinica2014，29，6： | 0 |
| 9 | Dual-sized hollow particle incorporated fibroin thermal insulating coatings on catheter for cerebral therapeutic hypothermia显示文摘Selective endovascular hypothermia has been used to provide cooling-induced cerebral neuroprotection,but current catheters do not support thermally-insulated transfer of cold infusate,which results in an increased exit temperature,causes hemodilution,and limits its cooling efficiency.Herein,air-sprayed fibroin/silica-based coatings combined with chemical vapor deposited parylene-C capping film was prepared on catheter.This coating features in dual-sized-hollow-microparticle incorporated structures with low thermal conductivity.The infusate exit temperature is tunable by adjusting the coating thickness and infusion rate.No peeling or cracking was observed on the coatings under bending and rotational scenarios in the vascular models.Its efficiency was verified in a swine model,and the outlet temperature of coated catheter(75μm thickness)was 1.8-2.0◦C lower than that of the uncoated one.This pioneering work on catheter thermal insulation coatings may facilitate the clinical translation of selective endovascular hypothermia for neuroprotection in patients with acute ischemic stroke. | Ming Li Yuan Gao Miaowen Jiang Hongkang Zhang Yang Zhang Yan Wu Wenhao Zhou Di Wu Chuanjie Wu Longfei Wu Luzi Bao Xiaoxiao Ge Zhengfei Qi Ming Wei Ang Li Yuchuan Ding Jicheng Zhang Guangzhen Pan Yu Wu Yan Cheng Yufeng Zheng Xunming Ji | 2023 | Bioactive Materials2023，，8： | 0 |
| 10 | LncRNA-POIR knockdown promotes hepatocellular carcinoma sensitivity to sorafenib through upregulating miR-182-5p and inhibiting autophagy显示文摘Although sorafenib has been found to prolong the survival time of patients with hepatocellular carcinoma(HCC),sorafenib resistance remains an important challenge.Increasing studies have demonstrated that long noncoding RNAs(lncRNAs)contribute to drug resistance in a wide number of cancers.Human periodontal ligament stem cell(PDLSC)osteogenesis impairment-related lncRNA(POIR)is a recently defined lncRNA for which little is known regarding its function.Our study aimed to reveal the role of POIR in the development of HCC cell sorafenib resistance.The level of POIR expression in patients and tumor cells was examined by Reverse transcription-quantitative polymerase chain reaction(RT-qPCR)assay.CCK-8,EdU,and flow cytometry assay were adopted to examine cell viability,proliferation,and apoptosis,respectively.The autophagy-associated protein expressions were determined by western blotting and autophagic flux analysis.The results of this study exhibited increased POIR in HCC tissues and cells and may be correlated with sorafenib resistance.Knockdown of POIR elevated sorafenib sensitivity by suppressing autophagy in HCC cells.Mechanically,POIR knockdown upregulated miR-182-5p,implying that miR-182-5p mediates POIR regulation.MiR-182-5p overexpression significantly enhanced chemosensitivity to sorafenib,whereas miR-182-5p inhibition had the opposite effect.The sensitization of POIR siRNA to sorafenib was abolished by co-transfection with miR-182-5p inhibitor.Our findings provide a potential target for further clinical treatment of sorafenib-resistant HCC patients. | JIAN XU HAILONG GE CHEN CHAO FENG MO YU WANG DENGKUI ZHANG XIAOXIAO ZHENG LI ZHENG XUEMEI LU WEI CHEN QUN XU WEIXIN YU | 2022 | BIOCELL2022，46，6： | 0 |
| 11 | Single-photon emission from isolated monolayer islands of InGaN显示文摘We identify and characterize a novel type of quantum emitter formed from InGaN monolayer islands grown using molecular beam epitaxy and further isolated via the fabrication of an array of nanopillar structures.Detailed optical analysis of the characteristic emission spectrum from the monolayer islands is performed,and the main transmission is shown to act as a bright,stable,and fast single-photon emitter with a wavelength of~400 nm. | Xiaoxiao Sun Ping Wang Tao Wang Ling Chen Zhaoying Chen Kang Gao Tomoyuki Aoki Mo Li Jian Zhang Tobias Schulz Martin Albrecht Weikun Ge Yasuhiko Arakawa Bo Shen Mark Holmes Xinqiang Wang | 2020 | Light(Science & Applications)2020，9，1： | 0 |
| 12 | RNA barcode segments for SARS-CoV-2 identification from HCoVs and SARSr-CoV-2 lineages显示文摘Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the pathogen responsible for coronavirus disease 2019(COVID-19),continues to evolve,giving rise to more variants and global reinfections.Previous research has demonstrated that barcode segments can effectively and cost-efficiently identify specific species within closely related populations.In this study,we designed and tested RNA barcode segments based on genetic evolutionary relationships to facilitate the efficient and accurate identification of SARS-CoV-2 from extensive virus samples,including human coronaviruses(HCoVs)and SARSr-CoV-2 lineages.Nucleotide sequences sourced from NCBI and GISAID were meticulously selected and curated to construct training sets,encompassing 1733 complete genome sequences of HCoVs and SARSr-CoV-2 lineages.Through genetic-level species testing,we validated the accuracy and reliability of the barcode segments for identifying SARS-CoV-2.Subsequently,75 main and subordinate species-specific barcode segments for SARS-CoV-2,located in ORF1ab,S,E,ORF7a,and N coding sequences,were intercepted and screened based on single-nucleotide polymorphism sites and weighted scores.Post-testing,these segments exhibited high recall rates(nearly 100%),specificity(almost 30%at the nucleotide level),and precision(100%)performance on identification.They were eventually visualized using one and two-dimensional combined barcodes and deposited in an online database(http://virusbarcodedatabase.top/).The successful integration of barcoding technology in SARS-CoV-2 identification provides valuable insights for future studies involving complete genome sequence polymorphism analysis.Moreover,this cost-effective and efficient identification approach also provides valuable reference for future research endeavors related to virus surveillance. | Changqiao You Shuai Jiang Yunyun Ding Shunxing Ye Xiaoxiao Zou Hongming Zhang Zeqi Li Fenglin Chen Yongliang Li Xingyi Ge Xinhong Guo | 2024 | Virologica Sinica2024，39，1： | 0 |
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