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Realizing high thermoelectric performance flexible free-standing PEDOT:PSS/Bi_(0.5)Sb_(1.5)Te_(3)composite films for power generation

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Rare Metals 2024年第11期43卷 5985-5993页

作者： Li sun Dong-Wei Ao Junphil Hwang Qin Liu En-Si Cao Bing sun School of Physics and Electronic Information Weifang UniversityWeifang 261061China School of Machinery and Automation Weifang UniversityWeifang 261061China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Korea Construction Equipment Technology Institute Gunsan-si 54004Jeollabuk-doKorea

Flexible thermoelectrics provide a distinct solution for developing sustainable and portable power ***/organic material compositing is an effective strategy to induce a significant enhancement of thermoelectric(TE)***,the poor electrical performance of inorganic/organic material is attributed to the poor carrier transport between organic/inorganic interfaces induced by the low contribution of composited inorganic ***,we prepared a high room temperature figure-of-merit(ZT)value of~0.19 and high bending resistance(surviving 1200 bending cycles at the bending radius of 16.5 mm)of p-type poly(3,4-ethylenedioxy thiophene):poly(4-styrenesulfonate)(PEDOT:PSS)/Bi_(0.5)Sb_(1.5)Te_(3)free-standing composite film via a facile vacuum-as sis ted filtration *** Bi_(0.5)Sb_(1.5)Te_(3)nano-spherical particles into PEDOT:PSS results in the optimized interfacial contact and carrier concentration,leading to a high Seebeck coefficient of~43.79μV·K^(-1).Accordingly,a high-power factor of~1.52μW·cm^(-1)·K^(-2)is achieved in the PEDOT:PSS/Bi_(0.5)Sb_(1.5)Te_(3)composite film at room *** addition,the PEDOT:PSS/Bi_(0.5)Sb_(1.5)Te_(3)interfaces with phase boundaries,nanograins and point defects could further decrease the thermal conductivity to~0.20 W·m^(-1)K^(-1),leading to a high ZT ***,a 6-leg freestanding film device was assembled,which provided an output power of 44.94 *** study demonstrates that free-standing organic/inorganic composite films are effective power sources for wearable electronic products.

关键词： Thermoelectric PEDOT:PSS/Bi_(0.5)Sb_(1.5)Te_(3) Flexible films Device

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Upregulated insulin receptor tyrosine kinase substrate promotes the proliferation of colorectal cancer cells via the bFGF/AKT signaling pathway

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Gastroenterology Report 2021年第2期9卷 166-175,I0002,I0003页

作者： Song Wang Zheng Liu Yi-Ming Ma Xu Guan Zheng Jiang Peng sun En-Rui Liu Yu-Kun Zhang Hong-ying Wang Xi-Shan Wang Department of Colorectal Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiangP.R.China Department of Colorectal Surgery Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingP.R.China State Key Laboratory of Molecular Oncology Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingP.R.China

Background:Some recent studies on insulin receptor tyrosine kinase substrate(IRTKS)have focused more on its functions in ***,there is a lack of research on the role of IRTKS in carcinomas and its mechanism remains *** this study,we aimed to clarify the role and mechanism of IRTKS in the carcinogenesis of colorectal cancer(CRC).Methods:We analysed the expression of IRTKS in CRC tissues and normal tissues by researching public *** tissues and adjacent tissues of 67 CRC patients who had undergone radical resection were collected from our *** real-time polymerase chain reaction and immunohistochemistry were performed in 52 and 15 pairs of samples,*** vitro and in vivo experiments were conducted to observe the effect of IRTKS on CRC *** Set Enrichment Analysis and Metascape platforms were used for functional annotation and enrichment *** detected the protein kinase B(AKT)phosphorylation and cell viability of SW480 transfected with small interfering RNAs(siRNAs)with or without basic fibroblast growth factor(bFGF)through immunoblotting and proliferation ***:The expression of IRTKS in CRC tissues was higher than that in adjacent tissues and normal tissues(all P<0.05).Disease-free survival of patients with high expression was *** of IRTKS significantly increased the proliferation rate of CRC cells in vitro and the number of tumor xenografts in *** phosphorylation level of AKT in CRC cells transfected with pLVX-IRTKS was higher than that in the control ***,siRNA-IRTKS significantly decreased the proliferation rate of tumor cells and the phosphorylation level of AKT induced by ***:IRTKS mediated the bFGF-induced cell proliferation through the phosphorylation of AKT in CRC cells,which may contribute to tumorigenicity in vivo.

关键词： colorectal cancer proliferation IRTKS AKT bFGF

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Expression of Clock genes in the pineal glands of newborn rats with hypoxic-ischemic encephalopathy

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Neural Regeneration Research 2012年第28期7卷 2221-2226页

作者： Bin sun xing Feng xin Ding Li Bao Yongfu Li Jun He Meifang Jin Division of Neonatology Affiliated Children's Hospital of Soochow University Suzhou 215003 Jiangsu Province China Department of General Pediatrics Yixing People's Hospital Yixing 214200 Jiangsu Province China Division of Neonatology Suzhou Municipal Hospital (Main Campus) Suzhou 215002 Jiangsu Province China Jiangsu Institute of Hematology and Blood Diseases First Affiliated Hospital of Soochow University Suzhou 215006 Jiangsu Province China

Clock genes are involved in circadian rhythm regulation, and surviving newborns with hypoxic-ischemic encephalopathy may present with sleep-wake cycle reversal. This study aimed to determine the expression of the clock genes Clock and Bmall, in the pineal gland of rats with hypoxic-ischemic brain damage. Results showed that levels of Clock mRNA v^re not significantly changed within 48 hours after cerebral hypoxia and ischemia. Expression levels of CLOCK and BMAL1 protein were significantly higher after 48 hours. The levels of Bmall mRNA reached a peak at 36 hours, but were significantly reduced at 48 hours. Experimental findings indicate that Clock and Bmall genes were indeed expressed in the pineal glands of neonatal rats. At the initial stage （within 36 hours） of hypoxic-ischemic brain damage, only slight changes in the expression levels of these two genes were detected, followed by significant changes at 36-48 hours. These changes may be associated with circadian rhythm disorder induced by hypoxic-ischemic brain damage.

关键词： brain hypoxia cerebral ischemia neonatal rats pineal gland Clock Bmall mRNA protein brain neural regeneration

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A Multiple Phase-Shifted Distributed Feedback(DFB)Laser Fabricated by Nanoimprint Lithography

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Chinese Physics Letters 2013年第5期30卷 67-69页

作者： ZUO Qiang ZHAO Jian-Yi CHEN xin WANG Zhi-Hao sun Tang-You ZHOU Ning ZHAO Yan-Li XU Zhi-Mou LIU Wen Wuhan National Laboratory for Optoelectronics School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074 Accelink Technologies Company LtdWuhan 430074

Multiple phase-shifted(MPS)diffraction grating is an effective way proposed to overcome the spatial hole burning(SHB)effect in a distributed feedback(DFB)*** present two symmetric λ/8 phase-shifted DFB lasers by using nanoimprint lithography(NIL).The threshold current of a typical laser is less than 15 *** side mode suppression ratio(SMSR)is still above 42 dB even at 100 mA current *** show the versatility of NIL,eight different wavelength MPS-DFB lasers on this single chip are also *** results prove that NIL is a promising tool for fabricating high performance complex grating DFB lasers.

关键词： lithography shifted overcome

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含α-二亚胺配体的硅(Ⅳ)配合物的合成、晶体结构与性能研究(英文)

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无机化学学报 2013年第6期29卷 1295-1301页

作者：马小莉孙帅杨鹰北京理工大学化工与环境学院北京100081 中南大学化学与化工学学院长沙410083

利用金属单质还原的方法合成了不同取代基的α-二亚胺配体支持的2个硅(Ⅳ)配合物L(SiMe3)2(2)(L=[(2,6-iPr2C6H3)NC(Me)]2)和L′(SiMe3)2(4)(L′=[(2,6-iPr2C6H3)NCH]2)。通过X-射线单晶衍射测定了配合物的单晶结构,并对其进行了元素分... 详细信息

利用金属单质还原的方法合成了不同取代基的α-二亚胺配体支持的2个硅(Ⅳ)配合物L(SiMe3)2(2)(L=[(2,6-iPr2C6H3)NC(Me)]2)和L′(SiMe3)2(4)(L′=[(2,6-iPr2C6H3)NCH]2)。通过X-射线单晶衍射测定了配合物的单晶结构,并对其进行了元素分析、1HNMR、红外光谱表征,以及紫外-可见光谱和荧光光谱分析。结构分析表明,构成这2种化合物中心的NCCN骨架呈之字形分布,骨架上三取代的原子接近平面排布。2种硅配合物在紫外光激发下都具有较好的发光性质。

关键词： α-二亚胺晶体结构硅髧配合物光致发光

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Quantitative identification and the evolution characteristics of production–living–ecological space in the mountainous area:From the perspective of multifunctional land

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Journal of Geographical Sciences 2023年第4期33卷 779-800页

作者： JI Zhengxin LIU Chao XU Yueqing sun Minxuan WEI Hejie sun Danfeng LI Yaoyao ZHANG Ping sun Qiangqiang College of Land Science and Technology China Agricultural UniversityBeijing 100193China Key Laboratory of Agricultural Land Quality Ministry of Natural ResourcesBeijing 100193China College of Public Administration Central China Normal UniversityWuhan 430079China College of Resources and Environmental Sciences Henan Agricultural UniversityZhengzhou 450002China

Developed here is an integrated framework for identifying production–living–ecological space(PLES)quantitatively at grid scale from the perspective of multifunction land use,and 25 compound space types are classified to highlight the multiple functions of *** a typical mountainous city in northern Hebei province,Zhangjiakou is used as a case study,and the results show that more than 80%of the land space in Zhangjiakou has remarkable triple *** living-dominated space and the production-dominated space are distributed mainly in the valleys of the Yanghe,Sanggan,and Huliu rivers and have obvious spatial consistency,while the ecological-dominated space is concentrated mostly at the eastern Yanshan Mountains and southern Taihang Mountains and complements the other two types of *** former two are spatially fragmented,while the latter has been expanding to the periphery over *** 1990 to 2015,the ecological-dominated space has increased the most by 1555.02 km^(2),while the living-dominated space has increased the least by 816.79 km^(2).The types of PLES are more diverse in the medium and low mountains and the areas with gentle slope,and the influencing factors include natural ecological environment,socioeconomic development,human consumption demand,and institutional ***,these findings can mitigate conflicts among PLES in mountainous and similar areas,and promote the balanced development of land space.

关键词： land use function value evaluation production-living-ecological space spatial and temporal varia-tion Zhangjiakou

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Chiral AuCu heterostructures with site-specific geometric control and tailored plasmonic chirality

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Science China Chemistry 2023年第11期66卷 3280-3289页

作者： Guizeng Yang Lichao sun Yunlong Tao Qingqing Cheng Xuehao sun Chuang Liu Qingfeng Zhang College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China

Rational design and construction of chiral-achiral hybrid structures are of great importance to realize the multifunctional complex chiral structures toward emerging technological applications. However, significant challenges remain due to the lack of fine control over the heterostructure. Here, we have developed a general bottom-up synthetic strategy for the site-selective growth of Cu nanodomains on intrinsically chiral Au nanocrystals. Chiral AuCu heterostructures with three distinct architectures were achieved by controlling the overgrowth of Cu nanodomains in a site-specific manner. The geometry-dependent plasmonic chirality of the heterostructures was demonstrated experimentally by circular dichroism spectroscopy and theoretically through finite-difference time-domain simulations. The site-specific geometric control of chiral AuCu heterostructures was also extended to employ anisotropic chiral Au nanoplates and nanorods as the building blocks. By virtue of the galvanic replacement reactions between metal ions and Cu atoms, chiral heterostructures with increasing architectural complexity and compositional diversity can be further achieved. The current work not only opens up a promising strategy to synthesize complex chiral hybrid nanostructures but also provides an important knowledge framework that guides the rational design of multifunctional chiral hybrid nanostructures toward chiroptical applications.

关键词： chiral nanomaterials AuCu heterostructures site-selective growth plasmonic chirality galvanic replacement reaction

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Impact of the dielectric duty factor on magnetic resonance in Ag-SiO_(2)-Ag magnetic absorber

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Optoelectronics Letters 2021年第1期17卷 5-11页

作者： WANG Yu-ying LI Jing SU Fu-fang sun Xue-bo ZHANG Xu LI Yan ZHANG Xia Shandong Provincial Key Laboratory of Laser Polarization and Information Technology School of Physics and Physical EngineeringQufu Normal UniversityQufu 273100China Surface Physics State Laboratory and Department of Physics Fudan UniversityShanghai 200433China

Magnetic absorber in optical frequency can be fulfilled through metamaterials designing. Therein, magnetic resonance in metal-dielectric-metal metasurfaces can be manipulated conveniently, and studying the parameters impacts is the primary for applications. In this work, through changing the grating width and the thickness of silica, the magnetic resonance modes have been studied, the conditions of the phase change zone from magnetic resonance(MR) to Fabry-Pérot(FP) are given out in Ag-SiO_(2)-Ag grating magnetic metasurfaces. The results indicate that the MR mode in metal-dielectric-metal configuration is mainly decided on the dielectric duty factor other than the sole behaviors of the thickness of dielectric and size of nanostructures. The physical mechanism is elucidated through simulated electromagnetic field distributions using finite difference time domain(FDTD) solution, and numerical analysis of effective refraction index of Ag-SiO_(2)-Ag magnetic metasurfaces. This study may prompt development of metamaterials in basic research in condensed physics and in optical devices applications.

关键词： dielectric magnetic absorber

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Peptide RL-QN15 promotes wound healing of diabetic foot ulcers through p38 mitogen-activated protein kinase and smad3/miR-4482-3p/vascular endothelial growth factor B axis

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Burns & Trauma 2023年第1期11卷 694-708页

作者： Dandan sun Kun Guo Naixin Liu Yilin Li Yuansheng Li Yan Hu Shanshan Li Zhe Fu yinglei Wang Yutong Wu yingxuan Zhang Jiayi Li Chao Li Zhuo Wang Zijian Kang Jun sun ying Wang xinwang Yang Department of Anatomy and Histology and&Embryology Faculty of Basic Medical ScienceKunming Medical UniversityNo.1168 Chunrong West RoadChenggong DistrictKunming650500YunnanChina Department of Biochemistry and Molecular Biology Faculty of Basic Medical ScienceKunming Medical UniversityNo.1168 Chunrong West RoadChenggong DistrictKunming650500YunnanChina Key Laboratory of Chemistry in Ethnic Medicinal Resources&Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal Endophytes State Ethnic Affairs Commission&Ministry of EducationSchool of Ethnic MedicineYunnan MinZu UniversityNo.2929 Yuehua StreetChenggong DistrictKunming650504YunnanChina

Background:Wound management of diabetic foot ulcers(DFUs)is a complex and challenging task,and existing strategies fail to meet clinical ***,it is important to develop novel drug candidates and discover new therapeutic ***,reports on peptides as molecular probes for resolving issues related to DFUs remain *** study utilized peptide RL-QN15 as an exogenous molecular probe to investigate the underlying mechanism of endogenous non-coding RNA in DFU wound *** aim was to generate novel insights for the clinical management of DFUs and identify potential drug ***:We investigated the wound-healing efficiency of peptide RL-QN15 under diabetic con-ditions using in vitro and in vivo experimental *** sequencing,in vitro transfection,quantitative real-time polymerase chain reaction,western blotting,dual luciferase reporter gene detection,in vitro cell scratches,and cell proliferation and migration assays were performed to explore the potential mechanism underlying the promoting effects of RL-QN15 on DFU ***:Peptide RL-QN15 enhanced the migration and proliferation of human immortalized keratinocytes(HaCaT cells)in a high-glucose environment and accelerated wound healing in a DFU rat *** on results from RNA sequencing,we defined a new microRNA(miR-4482-3p)related to the promotion of wound *** bioactivity of miR-4482-3p was verified by inhibiting and overexpressing *** of miR-4482-3p enhanced the migration and proliferation ability of HaCaT cells as well as the expression of vascular endothelial growth factor B(VEGFB).RLQN15 also promoted the migration and proliferation ability of HaCaT cells,and VEGFB expression was mediated via inhibition of miR-4482-3p expression by the p38 mitogen-activated protein kinase(p38MAPK)and smad3 signaling ***:RL-QN15 is an effective molecule for the treatment of DFUs,with the underlying mechanism related to the inhibition of miR-448

关键词： RL-QN15 Diabetic foot ulcer Wound healing miR-4482-3p Vascular endothelial growth factor B Peptide Mitogenactivated protein kinase

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超高温NiAl合金锥形薄壳件制备成形一体化新工艺

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推进技术 2021年第11期42卷 2617-2624页

作者：孙营林鹏苑世剑哈尔滨工业大学金属精密热加工国家级重点实验室黑龙江哈尔滨150001 太原理工大学材料科学与工程学院山西太原030024 大连理工大学高性能精密成形研究所辽宁大连116024

针对NiAl合金板坯制备及板坯成形锥形薄壳件存在的材料流动及组织性能控制困难的问题,提出了一种制备成形一体化新工艺。该工艺是将塑性成形和反应合成在同一工步中,即先将Ni/Al叠层箔置于模具中进行塑性成形,随后对成形的Ni/Al叠层箔... 详细信息

针对NiAl合金板坯制备及板坯成形锥形薄壳件存在的材料流动及组织性能控制困难的问题,提出了一种制备成形一体化新工艺。该工艺是将塑性成形和反应合成在同一工步中,即先将Ni/Al叠层箔置于模具中进行塑性成形,随后对成形的Ni/Al叠层箔原位加热加压反应合成NiAl合金薄壳件。采用三维扫描仪及Geomagic Studio/Qualify对锥形薄壳件的形状精度进行了分析,采用扫描电子显微镜(Scanning Electron Microscope,SEM)和电子背散射衍射(Electron Backscatter Diffraction,EBSD)技术对其微观组织进行了表征,并对构件的高温力学性能进行了测试。结果表明,采用该新工艺制备的锥形薄壳件成形效果良好,整体型面偏差尺寸在±0.1mm以内;构件沿轴截面壁厚平均偏差为0.012mm,沿横截面壁厚平均偏差为0.072mm,构件轴截面壁厚分布均匀性及组织成分均匀性高于横截面。构件高温力学性能稳定,1000℃时平均屈服强度为77.8MPa,平均抗拉强度为82.6MPa。NiAl合金构件的微观晶粒形貌与Ni箔的初始热处理状态及Ni/Al箔的初始厚度有关,未退火的Ni箔将延缓粗晶区晶粒的长大,减小初始箔材厚度可实现晶粒的进一步细化。

关键词：镍铝合金薄壳件超高温成形超高温材料力学性能

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