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Interferometers Utilizing Reversible X-ray-induced Chemical Changes in Poly(N-isopropylacrylamide)Microgels

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Chinese journal of Polymer Science 2024年第12期42卷 1915-1924,I0008页

作者： Ya-jie wang Ping Zhang Michael j Serpe Hong Chen Liang hu State Key Laboratory of Radiation Medicine and Protection Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutionsand School for Radiological and Interdisciplinary Sciences(RAD-X)Soochow UniversitySuzhou 215123China State and Local joint Engineering Laboratory for Novel Functional Polymeric Materials College of ChemistryChemical Engineering and Materials ScienceSoochowUniversitySuzhou 215123China Department of Chemistry University of AlbertaEdmontonABT6G 2G2Canada

Photonic materials,which react to light,have garnered interest due to their capability to exhibit adjustable structural ***,light targets the UV,visible,or near-IR *** this study,microgel-based photonic materials that are capable of reversibly responding to Xrays have been *** accomplish this,azobenzene(Azo)-containing poly(N-isopropylacrylamide)(pNiPAm)-based microgels are ***,ZnS scintillator and Cr/Au are applied on each side of the poly(methyl methacrylate(PMMA)***,the Azo MG monolayer is deposited onto the Au surface,followed by the deposition of an additional layer of Cr/*** process generates ZnS/PMMA/Cr/Au/Azo MG/Cr/Au or ZnS/Au-Azo MG-Au *** as a typical interferometer,ZnS/Au-Azo MG-Au demonstrates tunable colors based on the separation distance between the two Au *** ZnS scintillator can absorb and convert X-rays into Uv light,initiating the transition of the Azo groups from a trans to a cis ***,this transition causes the Azo MG to *** Azo MG swells,the distance between the two Au layers increases,resulting in a red-shift of approximately 350 nm in the optical signal of the ZnS/Au-Azo MG-Au ***,this X-ray responsivity of the interferometer is reversible,as it returns to its initial state after being stored in the dark for 24 *** demonstrate its capabilities,the ZnS/Au-Azo MG-Au interferometer successfully releases a drug when triggered by X-ray stimulation,thus validating its *** microgel-based interferometers hold significant promise for applications in chemoradiotherapy,radiobiology,and actuators in space.

关键词： N-isopropylacrylamide Microgels Interferometers X-rays Scintillators

Crystallization Behaviour and Mechanical Properties of Zr_(65)Cu_(18)Ni_9Al_8 Bulk Metallic Glass

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journal of Materials Science & Technology 2007年第5期23卷 693-696页

作者： M.Iqbal j.I.Akhter Haifeng ZHANG Zhuangqi hu Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China Physics Division Pakistan Institute of Nuclear Science and Technology P.O. Nilore Islamabad Pakistan

Designing and synthesis of cost effective bulk metallic glasses （BMGs） has been of considerable interest during the last decade so that they can be made commercially viable. Among these, Zr-based BMGs have been reported extensively due to their attractive properties, An alloy having composition Zr65Cu18Ni9A18 was designed and synthesized using 2-3 N pure materials by Cu mould casting. The alloy was characterized by X- ray diffraction （XRD）, scanning electron microscopy （SEM）, energy dispersive X-ray spectroscopy （EDS） and high temperature differential scanning calorimetry （DSC）. Thermal parameters like supercooled liquid region △Tx, reduced glass transition temperature Trg, γ and δ parameters were evaluated. Mechanical properties like microhardness, nanohardness, elastic modulus and fracture strength were measured. The alloy showed wide supercooled liquid region of 129＋1 K with improved thermal stability. The alloy has considerable fracture strength along with fair amount of ductility.

关键词： Zr-based bulk amorphous alloys Mechanical properties Glass-forming ability Thermal parameters

Numerical investigation on the flowfield of “swallowtail” cavity for supersonic mixing enhancement

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Acta Mechanica Sinica 2009年第1期25卷 37-44页

作者： C. wang Z. jiang Z. hu j. Lu Institute or Mechanics. Chinese Academy of Sciences 100190 Beijing China ReCAPT Gyeongsang National University JinjuKyeongnam 660-701 South Korea

A ＂swallowtail＂ cavity for the supersonic combustor was proposed to serve as an efficient flame holder for scramjets by enhancing the mass exchange between the cavity and the main flow. A numerical study on the ＂swallow- tail＂ cavity was conducted by solving the three-dimensional Reynolds-averaged Navier-Stokes equations implemented with a k-e turbulence model in a multi-block mesh. Turbu- lence model and numerical algorithms were validated first, and then test cases were calculated to investigate into the mechanism of cavity flows. Numerical results demonstrated that the certain mass in the supersonic main flow was sucked into the cavity and moved spirally toward the combustor walls. After that, the flow went out of the cavity at its lateral end, and finally was efficiently mixed with the main flow. The comparison between the ＂swallowtail＂ cavity and the conventional one showed that the mass exchanged between the cavity and the main flow was enhanced by the lateral flow that was induced due to the pressure gradient inside the cavity and was driven by the three-dimensional vortex ring generated from the ＂swallowtail＂ cavity structure.

关键词： Supersonic mixing - Flame holder "Swallowtail" cavity - Combustion ignition Numerical simulation

Extracellular vesicle activities regulating macrophage- and tissue-mediated injury and repair responses

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Acta Pharmaceutica Sinica B 2021年第6期11卷 1493-1512页

作者： Qian hu Christopher j.Lyon jesse K.Fletcher wenfu Tang Meihua wan Tony Y.hu Department of Integrated Traditional Chinese and western Medicine West China HospitalSichuan UniversityChengdu 610041China Center of Cellular and Molecular Diagnosis Tulane University School of MedicineNew OrleansLA 70112USA Department of Biochemistry&Molecular Biology Tulane University School of MedicineNew OrleansLA 70112USA

Macrophages are typically identified as classically activated(M1) macrophages and alternatively activated(M2) macrophages,which respectively exhibit pro-and anti-inflammatory phenotypes,and the balance between these two subtypes plays a critical role in the regulation of tissue inflammation,injury,and repair *** studies indicate that tissue cells and macrophages interact via the release of small extracellular vesicles(EVs) in processes where EVs released by stressed tissue cells can promote the activation and polarization of adjacent macrophages which can in turn release EVs and factors that can promote cell stress and tissue inflammation and injury and vice *** review discusses the roles of such EVs in resulating such interactions to influence tissue inflammation and injury in a number of acute and chronic inflammatory disease conditions,and the potential applications,advantage and concerns for using EV-based therapeutic approaches to treat such conditions,including their potential role of drug carriers for the treatment of infectious diseases.

关键词： Extracellular vesicles Macrophage Tissue injury Inflammatory disease Interaction loop Stem cell Sepsis Targeted therapy

EFFECT OF ANNEALING TREATMENT ON THE STRUCTURE OF CdS FILMS

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 313-318页

作者： G.B.Liu w.L.wang C.G.hu K.j.Liao Q.Feng L.H.Feng DepartmentofAppliedPhysics ChongqingUniversityChongqing400044China OptoelectronTechnologyandSystemLaboratoryofEducationMinistry ChongqingUniversityChongqing400044ChinaManuscriptreceived25November2002 DepartmentofMaterialScience SichuanUniversityChengdu610064China

The effect of annealing treatment on the structure of CdS films was investigated. The cadmium sulfide thin films were prepared by chemical bath deposition, and were annealed at nitrogen atmosphere at different temperatures. The films were characterized by SEM and XPS (X-ray photoelectron spectroscopy). X-ray photoelectron spectroscopy was used to examine the chemical states on the CdS films surface. It was found that thermal annealing could produce large grains of CdS thin films, remove the air contamination and reduce the oxygen content on the CdS films surface. Therefore, the CdS films changed more uniform and smoother surface after thermal annealing.

关键词： XPS CdS thin film CBD (chemical bath deposition)

单层janus Ga_(2)SSe光催化水解性质的第一性原理研究

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原子与分子物理学报 2025年第3期42卷 45-51页

作者：胡新华廖杨芳贵州省贵阳市乌当区第四中学贵阳550018 贵州师范大学物理与电子科学学院贵阳550025

光催化水解制氢为解决能源危机和环境污染问题提供了一种可行的策略.本文通过第一性原理计算,提出了单层janus Ga_(2)SSe是一种有效的水解光催化剂.结构稳定性分析表明,单层janus Ga_(2)SSe具有能量和动力学稳定性.电子性质表明,单层jan... 详细信息

光催化水解制氢为解决能源危机和环境污染问题提供了一种可行的策略.本文通过第一性原理计算,提出了单层janus Ga_(2)SSe是一种有效的水解光催化剂.结构稳定性分析表明,单层janus Ga_(2)SSe具有能量和动力学稳定性.电子性质表明,单层janus Ga_(2)SSe属于间接带隙半导体,有利于降低载流子的复合几率.光催化性能分析表明,单层janus Ga_(2)SSe的能带边缘位置适合PH=0~14宽范围的光催化水解.此外,单层janus Ga_(2)SSe具有较高的紫外光和可见光吸收、较大的内建电场、较小的载流子有效质量保证了光生载流子有效分离并快速迁移到反应活性位点参与水的氧化还原反应.研究结果为单层janus Ga_(2)SSe的合成及其作为水解光催化剂的潜在应用提供了有价值的理论指导.

关键词： janus材料光催化水解第一性原理

企业数实技术融合与新质生产力发展——来自企业专利信息的经验证据

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华东经济管理 2025年第1期39卷 1-9页

作者：郭娜陈东晖胡丽宁天津财经大学金融学院天津300222

文章以2013—2023年我国上市企业为研究对象,通过手工整理208万条企业专利信息,借助深度学习算法测算专利文本语义以构建企业数实技术融合指数与新质生产力指标。实证检验发现,企业数实技术融合能够有效促进新质生产力发展,且对创新突... 详细信息

文章以2013—2023年我国上市企业为研究对象,通过手工整理208万条企业专利信息,借助深度学习算法测算专利文本语义以构建企业数实技术融合指数与新质生产力指标。实证检验发现,企业数实技术融合能够有效促进新质生产力发展,且对创新突破和绿色转型两类新质生产力均有促进作用,两者存在显著的杠杆效应。机制分析表明,数实技术融合通过降低企业生产成本、提高管理能力、抑制研发操纵以推动企业新质生产力发展。异质性分析发现,在大型国有企业和管理层创新意识、数字化思维较强的企业,数实技术融合的赋能效果更明显。经济后果检验显示,数实技术融合对企业新质生产力的赋能作用是实现经济高质量发展的关键路径。

关键词：企业数实技术融合新质生产力深度学习专利文本语义高质量发展

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Multi-scale investigation of short-range order and dislocation glide in MoNbTi and TaNbTi multi-principal element alloys

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npj Computational Materials 2023年第1期9卷 1430-1442页

作者： hui Zheng Lauren T.w.Fey Xiang-Guo Li Yong-jie hu Liang Qi Chi Chen Shuozhi Xu Irene j.Beyerlein Shyue Ping Ong Department of NanoEngineering University of California San DiegoLa JollaCA 92093-0448USA Materials Department University of CaliforniaSanta BarbaraCA 93106-5050USA Department of Materials Science and Engineering University of MichiganAnn ArborMI 48109USA Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA Department of Mechanical Engineering University of CaliforniaSanta BarbaraCA 93106-5070USA

Refractory multi-principal element alloys(RMPEAs)are promising materials for high-temperature structural ***,we investigate the role of short-range ordering(SRO)on dislocation glide in the MoNbTi and TaNbTi RMPEAs using a multi-scale modeling *** carlo/molecular dynamics simulations with a moment tensor potential show that MoNbTi exhibits a much greater degree of SRO than TaNbTi and the local composition has a direct effect on the unstable stacking fault energies(USFEs).From mesoscale phase-field dislocation dynamics simulations,we find that increasing SRO leads to higher mean USFEs and stress required for dislocation *** gliding dislocations experience significant hardening due to pinning and depinning caused by random compositional fluctuations,with higher SRO decreasing the degree of USFE dispersion and hence,amount of ***,we show how the morphology of an expanding dislocation loop is affected by the applied stress.

关键词： alloys dislocation element

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天然和饱水红砂岩三轴压缩蠕变变形试验研究

三峡大学学报（自然科学版） 2025年第1期47卷 9-15页

作者：刘桃根胡凯李玲王伟湖南工学院土木与建筑工程学院湖南衡阳421002 河海大学岩土工程科学研究所南京210098 江西职业技术大学建筑工程学院江西九江332007

蠕变特性和长期强度是红砂岩地区岩体工程安全评价的关键要素,饱水软化效应对红砂岩蠕变特性和长期强度具有重要影响.采用全自动岩石三轴压缩伺服流变仪,开展天然与饱水红砂岩的三轴压缩试验和三轴压缩蠕变试验.试验结果表明:峰值强度... 详细信息

蠕变特性和长期强度是红砂岩地区岩体工程安全评价的关键要素,饱水软化效应对红砂岩蠕变特性和长期强度具有重要影响.采用全自动岩石三轴压缩伺服流变仪,开展天然与饱水红砂岩的三轴压缩试验和三轴压缩蠕变试验.试验结果表明:峰值强度、弹性模量和蠕变破坏应力因饱水软化效应而降低,围压对其降幅有削弱作用,蠕变破坏应力与峰值强度的比值在0.75~0.98之间;饱水软化效应能增强蠕变瞬时变形,减弱蠕变变形及蠕变应变速率;环向应变比轴向应变更早进入稳态蠕变阶段和加速蠕变阶段;稳态蠕变速率与偏压的变化关系符合指数函数关系;长期强度因饱水软化作用而降低,却因围压增加而增大,长期强度与峰值强度的比值在0.62~0.92之间;裂纹损伤应力与长期强度相差较大,裂纹损伤应力视为长期强度有待进一步考究.

关键词：红砂岩蠕变特性长期强度饱水软化效应裂纹损伤应力