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β-CuGaO_(2):a ferroelectric semiconductor with narrow band gap as degradation catalyst for wastewater environmental remediation

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Rare Metals 2022年第3期41卷 972-981页

作者： Ming-Cai Yao Xiao-Jie Wu Lan-Lan Xu fan-zhi meng Qiang Yang Jian meng Xiao-Juan Liu State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China College of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun 130022China

As a narrow band gap semiconductor,wurtziteβ-CuGaO_(2)has drawn increasing attention in the area of solar ***β-CuGaO_(2)has been theoretically predicted to possess ferroelectric polarization,its experi-mental ferroelectric characterization and practical appli-cations have not yet been ***,firstly we experimentally confirmed its ferroelectric property via hysteresis loop *** result showed a rema-nent polarization value of 10.20μC·cm^(-2) with low coer-cive electricfield of 6.45 kV·cm^(-1) at 20 Hz at room temperature,while the leakage current density(J)value was found to be 1.188 A·cm^(-2),which suggested the property of a larger remnant polarization with low coercive electricfield than current value if the compactness was ***,the synergistic effect of ferroelectric and semiconductor was comparatively highlighted by the experiment of pollutant *** 30 min,methyl orange degradation efficiency had reached 30.73%only in the case of spontaneous polarization(electricity),while it could reach 67.58%under the effect of pre-po-larizedβ-CuGaO_(2)powder due to the modulating orienta-tion of ferroelectric *** irradiated(light),it was up to 92%within 30 min;in comparison,it merely took 16 min up to 92%degradation efﬁciency under both illu-mination and *** without illumination,it was 92.01%with 30 min in the condition of ordinary ultrasonic vibration(force)while under both illumination and ultrasonic vibration,only 11 min was spent to reach 92.79%degradation efﬁ*** these results felici-tously indicated thatβ-CuGaO_(2)had fascinating potential in energy harvesting(such as electricity,light,force)and transformation as wastewater environment remediation catalyst.

关键词： β-CuGaO_(2) Ferroelectricity Narrow band gap Large remanent polarization Degradation catalysts

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Microstructures and mechanical properties of a commercial Mg-Al-Zn-Mn alloy with various hot-extrusion processes

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Rare Metals 2024年第3期43卷 1329-1336页

作者： He Ma fan-zhi meng Qiang Yang Ze-Feng Xie Yuan-Ding Huang Xin Qiu State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun130022China MagIC-Magnesium Innovation Center Helmholtz-Zentrum Geesthacht21502GeesthachtGermany Engineering Research Center of Optoelectronic Functional Materials Ministry of EducationChangchun University of Science and TechnologyChangchun130022China

Mg-Al-Zn-Mn(AZ)system alloys have become widely used due to their good castability,excellent formability and outstanding corrosion resistance[1-6].However,their strength is still much lower than that of traditional Mg... 详细信息

关键词： alloys alloy corrosion

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Detailed Structures and Formation Mechanisms of Well-Known Al_(10)RE_2Mn_7 Phase in Die-Cast Mg-4Al-4RE-0.3Mn Alloy

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Acta Metallurgica Sinica(English Letters) 2019年第2期32卷 178-186页

作者： Qiang Yang Shu-Hui Lv fan-zhi meng Kai Guan Bai-Shun Li Xu-Hu Zhang Jing-Qi Zhang Xiao-Juan Liu Jian meng State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry ChineseAcademy of Sciences School of Materials Science and Engineering Changchun University of Science and Technology University of Sciences and Technology of China Aerospace Research Institute of Materials and Processing Technology

The detailed structures and the corresponding formation mechanisms of the well-known Al_(10)RE_2Mn_7 phase in the conventional die-cast Mg–4Al–4RE–0.3Mn alloy were thoroughly investigated using transmission electron microscopy(TEM). The results indicate that the Al_(10)RE_2Mn_7 phase ordinarily contains both normal (111) twins and orientation *** detailed TEM observations and density functional theory calculations indicate that the Al_(10)RE_2Mn_7 phase is transferred from the Al_8REMn_4 phase following an orientation relationship as [010]_(Al_8REMn_4)//[101]_(Al_(10)RE_2Mn_7) and (101)_(Al_8REMn_4)//(110)_(Al_(10)RE_2Mn_7). Moreover, forming orientation twins in the Al_(10)RE_2Mn_7 phase is attributed to the blurry regions at incoherent twin boundaries in the Al_8REMn_4 phase. Finally, these formed orientation twins result in the (111) twins in the Al_(10)RE_2Mn_7 phase.

关键词： Transmission electron microscopy Phase transformation Intermetallic phase Twin boundary Orientation relationship

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Synthesis and Properties of SEPS-g-PEO Copolymers with Varying Branch Lengths

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Chinese Journal of Polymer Science 2018年第8期36卷 934-942页

作者： Zhong-Fu Zhao Pei-Ying Liu Chun-Qing Zhang Wei Liu Yan-Hui Wang Tao Tang Yi-Fu Ding Yan-Dong Zhang fan-zhi meng State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of Technology State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences Department of Mechanical Engineering University of Colorado Boulder

Poly（ethylene oxide）（PEO） was controllably grafted from styrene-b-（ethylene-co-propylene）-b-styrene （SEPS） backbones by combining lithiation of styrenic units and living monomer-activated anionic ring-opening polymerization of ethylene oxide （EO） monomers with the aid of co-initiators triisobutyl aluminum. The as-synthesized SEPS-g-PEO copolymers were characterized by SEC, 1H-NMR, FTIR, SAXS, AFM and DSC. When the branch length is relatively small, increase of PEO fraction leads to the increase of the correlation length between neighboring hard domains, but the degree of correlation reduces. When the branch length is relatively large, the phase-separated structures become random both in terms of size and spatial correlation, and macro-phase separated structures appear. The crystallization behavior of the PEO branches can be effectively inhibited in SEPS-g-PEO, so no significant crystallization takes place until the fraction of PEO branches is 20.1 wt%, which greatly promotes the rapid delivery of hydrophilic drugs in the hot-melting pressure- sensitive adhesives （HMPSAs） based on SEPS-g-PEO. Their cumulative release amount of a model drug could achieve 80%, more than twice the value in the HMPSAs based on linear PEO-containing styrenic block copolymers.

关键词： Living anionic polymerization SEPS-g-PEO copolymers Phase structures Drug delivery

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Clinical factors associated with the number of gallbladder polyps

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Chinese Medical Journal 2020年第22期133卷 2751-2752页

作者： Wen-Juan Lu Chang-Sheng Liu Hong-Yan Li Lan-Lan Zang fan-zhi meng Jing-Hua Liu Department of Laboratory Junan County People's HospitalLinyiShandong 276600China Department of Medical Examination Junan County People's HospitalLinyiShandong 276600China Central Laboratory Linyi People's HospitalLinyiShandong 276000China Department of Hepatobiliary Surgery Linyi People's HospitalLinyiShandong 276000China Prof.Cai's Laboratory Linyi People's HospitalLinyiShandong 276000China

Gallbladder polyps(GBPs),which are defined as a pathological change protruding from the gallbladder mucosa,are one of the main causes of hospital admission for *** incidence of GBPs is 4.2 to 9.5%in *** date,the etiology of GBPs has not yet been clearly *** to previous studies,metabolic status is strongly associated with GBPs.⑵A single polyp is more likely to exhibit a malignant transformation,and large(diameter greater than 10 mm)single polyps should be resected together with the entire ***,multiple polyps seem unlikely to ***,number of GBPs is an important factor that affects the treatment of ***,clinical factors associated w让h the number of GBPs are not completely understood;therefore,the aim of the current study is to investigate these factors.

关键词： gallbladder polyps Clinical

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表皮细胞条件培养基对真皮干细胞的影响

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云南大学学报（自然科学版） 2019年第2期41卷 411-415页

作者：樊智猛褚维伟吴耀炯清华大学生命科学学院，北京　100084 清华大学深圳研究生院生命与健康学部，广东深圳　518055 清华大学清华伯克利深圳学院，广东深圳　518055

真皮干细胞(SKPs)是一种源自真皮,在毛囊再生中发挥关键作用的多能干细胞.然而,SKPs的体外扩增是一项尚未完全解决的难题.该研究结果显示,表皮细胞条件培养基能显著促进SKPs的增殖,增加SKPs特征性基因Akp2,Sox2,Bmp4,Nestin1,PDGFa,Clst... 详细信息

真皮干细胞(SKPs)是一种源自真皮,在毛囊再生中发挥关键作用的多能干细胞.然而,SKPs的体外扩增是一项尚未完全解决的难题.该研究结果显示,表皮细胞条件培养基能显著促进SKPs的增殖,增加SKPs特征性基因Akp2,Sox2,Bmp4,Nestin1,PDGFa,Clstn2,Trps1,Versican的表达水平,并提高SKPs毛囊诱导能力标志性蛋白-碱性磷酸酶的活性.因此,该研究提示表皮细胞分泌的蛋白对于SKPs的增殖和干性的维持有重要作用.

关键词：表皮细胞条件培养基真皮干细胞

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Kangfuxin solution alleviates esophageal stenosis after endoscopic submucosal dissection:A natural ingredient strategy

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World Journal of Gastroenterology 2025年第1期31卷 110-125页

作者： Xin Zhou Dan Ma Yi-Xiang He Jing Jin Hong-Lian Wang Yun-Feng Wang fan Yang Jian-Qin Liu Jie Chen zhi Li Department of Spleen and Stomach Diseases the Affiliated Traditional Chinese Medicine HospitalSouthwest Medical UniversityLuzhou 646000Sichuan ProvinceChina The Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Digestive System Diseases of Luzhou City The Affiliated Traditional Medicine HospitalSouthwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Gastroenterology Changhai HospitalNaval Medical UniversityShanghai 20082China Research Center of Integrated Chinese and Western Medicine The Affiliated Traditional Chinese Medicine HospitalSouthwest Medical UniversityLuzhou 646000Sichuan ProvinceChina School of Integrated Traditional Chinese and Western Clinical Medicine North Sichuan Medical CollegeNanchong637100Sichuan ProvinceChina

BACKGROUND Esophageal stricture ranks among the most significant complications following endoscopic submucosal dissection(ESD).Excessive fibrotic repair is a typical pathological feature leading to stenosis after *** To examine the effectiveness and underlying mechanism of Kangfuxin solution(KFX)in mitigating excessive fibrotic repair of the esophagus *** Pigs received KFX at 0.74 mL/kg/d for 21 days after esophageal full circumferential *** examinations occurred on days 7 and 21 *** vitro,recombinant transforming growth factor(TGF)-β1(5 ng/mL)induced a fibrotic microenvironment in primary esophageal fibroblasts(pEsF).After 24 hours of KFX treatment(at 1.5%,1%,and 0.5%),expression ofα-smooth muscle actin-2(ACTA2),fibronectin(FN),and type collagen I was *** signaling was analyzed,including TGF-β1,Smad2/3,and phosphor-smad2/3(p-Smad2/3).RESULTS Compared to the Control group,the groups treated with KFX and prednisolone exhibited reduced esophageal stenosis,lower weight loss rates,and improved food tolerance 21 d after *** treatment,Masson staining revealed thinner and less dense collagen fibers in the submucosal ***,the expression of fibrotic effector molecules was notably ***,KFX downregulated the transduction levels of fibrotic functional molecules such as TGF-β1,Smad2/3,and p-Smad2/*** vitro,pEsF exposed to TGF-β1-induced fibrotic microenvironment displayed increased fibrotic activity,which was reversed by KFX treatment,leading to reduced activation of ACTA2,FN,and collagen *** 1.5%KFX treatment group showed decreased expression of p-Smad 2/3 in TGF-β1-activated *** KFX showed promise as a therapeutic option for post-full circumferential esophageal ESD strictures,potentially by suppressing fibroblast fibrotic activity through modulation of the TGF-β1/Smads signaling pathway.

关键词： Kangfuxin solution Natural component Endoscopic submucosal dissection Esophagus stricture Fibrosis

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单原子Pt负载在锐钛矿(001)表面的电光学特性研究

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原子与分子物理学报 2025年第6期42卷 43-50页

作者：靳帆赵志超运城学院应用化学系运城044000 运城学院科研产业部运城044000

基于第一性原理的多体格林函数理论方法,系统探究了锐钛矿TiO_(2)(001)表面负载Pt单原子催化剂的电子结构和光学性质,考虑Pt在完美表面和缺陷表面(O空位)两种基底上的负载.结果发现,Pt会在TiO_(2)禁带中间、价带和导带边缘引入新能级,... 详细信息

基于第一性原理的多体格林函数理论方法,系统探究了锐钛矿TiO_(2)(001)表面负载Pt单原子催化剂的电子结构和光学性质,考虑Pt在完美表面和缺陷表面(O空位)两种基底上的负载.结果发现,Pt会在TiO_(2)禁带中间、价带和导带边缘引入新能级,但不同基底负载的Pt单原子催化剂存在不同的带隙特性.Pt的负载会引起体系光学吸收红移,增大光学吸收范围,延伸光吸收至可见光甚至是红外区域,提升可见光活化的可能性,同时改善体系的激子束缚能,有利于空穴与电子有效分离,这可能是Pt负载后光催化性能提升的原因之一.然而,若在可见光或低能量紫外光激发后,分离的电子与空穴没有及时参与反应,体系衰变回最低激发态,此时极大的激子束缚能可能会加速电子与空穴重组,不利于表面催化反应的进行.负载在O空位的催化剂最低激发态的激子束缚能比完美表面小,重组速率慢.计算结果能够为理解单原子催化剂结构-性能关系提供一些见解.

关键词：二氧化钛 Pt单原子催化剂多体格林函数理论电子结构光吸收

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Anchoring Iron-EDTA Complex on Graphene toward the Synthesis of Highly Efficient Fe-N-C Oxygen Reduction Electrocatalyst for Fuel Cells

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Chinese Journal of Chemistry 2018年第4期36卷 287-292页

作者： zhi-Wen Chang fan-Lu meng Hai-Xia Zhong Xin-Bo Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 China University of Chinese Academy of Sciences Beijing 100049 China

Developing nonprecious carbon electrocatalysts as alternatives to platinum for cathodic oxygen reduction reaction in fuel cells is of signifi- cance. Herein, an efficient precursor-controlled synthesis strategy based on extremely rapid nucleation and deposition process assisted by the liquid nitrogen freeze drying method is explored to anchor cheap iron-EDTA complex evenly dispersed on graphene to realize mJcrostructural homogeneity of the derived Fe-N-C oxygen reduction electrocatalyst. The prepared electrocatatyst possesses excellent performance including high activity with more positive onset and half-wave potential, a long-term stability, and anti-poisoning effect compared to commercial Pt/C. The activity correlates well with the unique sheet-shaped morphology, high surface area, hierarchical porous structure, and the introduction of Fe-Nx/C species. Especially, both the assembled practical alkaline and acid fuel cells based on the synthesized cathode catalysts reveal excellent performance with high open-circuit voltage and power density.

关键词： iron-EDTA complex iron-nitrogen-doping carbon porous nanosheets oxygen reduction reaction fuel cells

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Endogenous Candida albicans endophthalmitis in a patient with chronic renal failure on hemodialysis

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International Journal of Ophthalmology(English edition) 2024年第5期17卷 979-981页

作者： meng-Ya Liu zhi-fan Chen Hao-Sheng Liu Qian-Li meng Department of Ophthalmology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510080Guangdong ProvinceChina The Fourth Affiliated Hospital of Guangzhou Medical University Guangzhou 511400Guangdong ProvinceChina

Dear Editor,We report a rare case of endogenous endophthalmitis caused by Candida albicans in a patient with chronic renal failure concomitant hemodialysis.A 71-year-old man with a history of hypertension and 2-year chronic renal failure on hemodialysis via a native arteriovenous fistula(AVF)was presented to the local hospital due to fever 3wk *** pathogens were detected through blood culture on admission,and his fever gradually subsided with intravenous ceftriaxone *** a week of fever,he experienced progressive blurred vision in both eyes,accompanied by pain and *** magnetic resonance imaging(MRI)of the brain revealed *** had not undergone any previous eye surgeries or trauma.

关键词： hemodialysis albicans fever

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