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Ordered Bicontinuous Network Structures Regulated by Orientational Interactions in a Rod-Coil Block Copolymer

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Chinese Journal of Polymer Science 2024年第5期42卷 636-642,I0008页

作者： xiao-Lin Lyu Shi-Chu yang An-Qi xiao ping-ping Hou Wei Zhang Hong-Bing Pan Zhi-Hao Shen Xing-He Fan Qi-Feng Zhou Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China Key Laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou350108China

The rich phase behavior of block copolymers(BCPs)has drawn great attention in recent ***,the double diamond(DD)phase is rarely obtained because of the competition between the minimization of interfacial energy and packing ***,a rod-coil BCP containing mesogen-jacketed liquid crystalline polymer is designed to acquire ordered bicontinuous network *** reduction of internal energy originating from the orientational interaction among the rod blocks can compensate for the free energy penalty of packing frustration to stabilize the DD *** resulting BCP can also experience lamellae-to-DD and double gyroid-to-lamellae transitions by changing the annealing *** results make the rod-coil BCP an excellent candidate for the self-assembly of ordered network structures,demonstrating great potential in nanopatterning and metamaterials.

关键词： Block copolymer Rod-coil Ordered bicontinuous phase Double diamond Double gyroid

Multicomponent Self-assembly: Spontaneous Formation of a Metallomacrocycle from Two Quinoline Based Linear Ligands and Four Silver(Ⅰ) Nitrates

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Chemical Research in Chinese Universities 2000年第3期16卷 273-275页

作者： LIAO Sen XU An wu SU Cheng yong ZHANG Ze fu yang xiao ping KANG Bei sheng LIU Han qin School of Chemistry and Chemical Engineering Zhongshan UniversityGuangzhou 510275China Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Aademy of SciencesLanzhou730000China

A tetrametallotricyclic molecule is constructed by the spontaneous self-assembly of six components altogether consisting of two types of ligands and one type of metal ion. The unprecedented dimension and topology of the complex is derived from the flexible behavior of the ligands. The π-π interactions facilitate the formation of box-like cavity by rigid quinoline rings, while the soft oligoethylene glycol skeleton makes it easy to wrap around to form a macrocycle.

关键词： Silver(Ⅰ) complex Metallosupramolecular complex Self-assembly

Advances in noble metal-modified g-C3N4 heterostructures toward enhanced photocatalytic redox ability

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International Journal of Minerals,Metallurgy and Materials 2024年第11期 2368-2389页

作者： xiao Zhang ping yang Faculty of Chemical Engineering and Technology Cracow University of Technology School of Material Science&Engineering University of Jinan

The photocatalytic activity of catalysts depends on the energy-harvesting ability and the separation or transport of photogenerated carriers. The light absorption capacity of graphitic carbon nitride（g-C3N4）-based composites can be enhanced by adjusting the surface plasmon resonance（SPR） of noble metal nanoparticles（e.g., Cu, Au, and Pd） in the entire visible region. Adjustments can be carried out by varying the nanocomponents of the materials. The SPR of noble metals can enhance the local electromagnetic field and improve interband transition, and resonant energy transfer occurs from plasmonic dipoles to electron–hole pairs via near-field electromagnetic interactions. Thus, noble metals have emerged as relevant nanocomponents for g-C3N4used in CO2photoreduction and water ***, recent key advances in noble metals（either in single atom, cluster, or nanoparticle forms） and composite photocatalysts based on inorganic or organic nanocomponent-incorporated g-C3N4nanosheets are systematically discussed, including the applications of these photocatalysts, which exhibit improved photoinduced charge mobility in CO2photoconversion and H2production. Issues related to the different types of multi-nanocomponent heterostructures（involving Schottky junctions, Z-/S-scheme heterostructures, noble metals, and additional semiconductor nanocomponents） and the adjustment of dimensionality of heterostructures（by incorporating noble metal nanoplates on g-C3N4forming 2D/2D heterostructures） are explored. The current prospects and possible challenges of g-C3N4composite photocatalysts incorporated with noble metals（e.g., Au, Pt, Pd, and Cu）, particularly in water splitting, CO2reduction, pollution degradation,and chemical conversion applications, are summarized.

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Effect of solute Ce,Mn,and Si on mechanical properties of silicon steel:insights from DFT calculations

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Journal of Iron and Steel Research International 2024年第3期31卷 700-709页

作者： Xiang-jun Liu Ji-chun yang Hui-ping Ren xiao-bin Jia Ming-yi Zhang Chang-qiao yang School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resource Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Inner Mongolia North Heavy Industries Group Co. Ltd.Baotou 014010Inner MongoliaChina Inner Mongolia Metal Material Research Institute Baotou 014010Inner MongoliaChina

The influence of solute Ce,Mn,and Si on the mechanical properties of silicon steel was investigated by first-principles ***,Mn,and Si can all be solubilized in Fe *** significantly reduces the incompressibility and rigidity of the system but also significantly improves the toughness and *** effect of Mn on mechanical properties of the system is not *** has a significant effect on the improvement in incompressibility and rigidity but a limited effect on the improvement in toughness and *** metallic bond strength of Fe-Ce,Fe-Mn,and Fe-Si doped systems is weaker than that of the pure Fe system,which can be used to explain the reduction in the incompressibility and rigidity of these doped *** relatively high electron cloud density in the doped system may be responsible for the increase in toughness.

关键词： Silicon steel Rare earth First-principles calculation Elastic modulus Electronic structure

Photoluminescence Investigation of Charge Build-Up Process in the Emitter of a Double-Barrier Resonant Tunneling Structure

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Chinese Physics Letters 1996年第9期13卷 707-710页

作者： LUO Ke-jian ZHENG Hou-zhi ZHANG Ting LI Cheng-fang yang xiao-ping ZHANG Peng-hua ZHANG Wei TIAN Jin-fa National Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

Charge build-up process in the emitter of a double-barrier resonant tunneling structure is studied by using photoluminescence *** evidence is obtained that the charge accumulation in the emitter keeps almost constant with bias voltages in the resonant regime,while it increases remarkably with bias voltages beyond resonant *** optical results are in good agreement with the electrical *** is demonstrated that the band gap renormalization plays a certain role in the experiment.

关键词： measurement emitter resonant

Application of next-generation sequencing in clinical oncology to advance personalized treatment of cancer

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Chinese Journal of Cancer 2012年第10期31卷 463-470页

作者： Yan-Fang Guan Gai-Rui Li Rong-Jiao Wang Yu-Ting Yi Ling yang Dan Jiang xiao-ping Zhang Yin Peng Shenzhen Clinical Molecular Diagnostic Engineering Laboratory BGI-Shenzhen Shenzhen Guangdong 518083 P. R. China.

With the development and improvement of new sequencing technology,next-generation sequencing(NGS) has been applied increasingly in cancer genomics research over the past *** recently,NGS has been adopted in clinical oncology to advance personalized treatment of *** is used to identify novel and rare cancer mutations,detect familial cancer mutation carriers,and provide molecular rationale for appropriate targeted *** to traditional sequencing,NGS holds many advantages,such as the ability to fully sequence all types of mutations for a large number of genes(hundreds to thousands) in a single test at a relatively low ***,significant challenges,particularly with respect to the requirement for simpler assays,more flexible throughput,shorter turnaround time,and most importantly,easier data analysis and interpretation,will have to be overcome to translate NGS to the bedside of cancer ***,continuous dedication to apply NGS in clinical oncology practice will enable us to be one step closer to personalized medicine.

关键词：癌症治疗测序技术临床实践肿瘤学个性化应用基因突变基因组学

Single image super-resolution reconstruction using multiple dictionaries and improved iterative back-projection

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Optoelectronics Letters 2019年第2期15卷 156-160页

作者： ZHAO Jian-wen YUAN Qi-ping QIN Juan yang xiao-ping CHEN Zhi-hong Tianjin Key Laboratory of Film Electronic and Communication Devices School of Electrical and Electronic Engineering Tianjin University of Technology

In order to improve the super-resolution reconstruction effect of the single image, a novel multiple dictionaries learning via support vector regression(SVR) and improved iterative back-projection(IBP) are *** characterize the image structure, the low-frequency dictionary is constructed from the normalized brightness of low-frequency image patches in a discrete-cosine-transform(DCT) *** determined by Gaussian weighting are added to the input vector to restore more high-frequency information when training the high-frequency image patch dictionary in the space *** post-processing, the improved IBP is employed to reduce regression errors each *** results show that the peak signal-to-noise ratio(PSNR)and structural similarity(SSIM) of the proposed method are enhanced by 1.6%—5.5% and 1.5%—13.1% compared with those of bicubic interpolation, and the proposed method visually outperforms several algorithms.

关键词： super-resolution multiple dictionaries

Hydroxysafflor yellow A induced ferroptosis of Osteosarcoma cancer cells by HIF-1α/HK2 and SLC7A11 pathway

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Oncology Research 2024年第5期32卷 899-910页

作者： YIWEN ZHU LIU yang YING YU YING XIONG ping xiao xiao FU XIN LUO Department of Rehabilitation Medicine The Second Affiliated Hospital of Nanchang UniversityNanchang330006China Department of General Practice The Second Affiliated Hospital of Nanchang UniversityNanchang330006China

Osteosarcoma is a very serious primary bone cancer with a high death rate and a dismal *** there is no permanent therapy for this condition,it is necessary to develop a ***,this investigation was carried out to assess the impacts and biological functions of hydroxysafflor yellow A(HYSA)in osteosarcoma cell lines(MG63).In this investigational study,MG63 cells were *** experiments,quantitative polymerase chain reaction(qPCR),immunofluorescent staining,extracellular acidification rate(ECAR),oxygen consumption rate(OCR),glucose consumption,lactate production,and ATP levels,proliferation assay,5-Ethynyl-2′-deoxyuridine(EDU)staining,and Western blot were *** MG63 cells,HYSA lowered cell proliferation and metastasis rates,suppressed EDU cell number,and enhanced caspase-3/9 activity *** reduced the Warburg effect and induced ferroptosis(FPT)in MG63 *** ferroptosis diminished HYSA’s anti-cancer activities in MG63 *** stimulation of the HIF-1α/SLC7A11 pathway decreased HYSA’s anti-cancer activities in MG63 ***-1αis one target spot for HYSA in a model of osteosarcoma cancer(OC).HYSA altered HIF-1α’s thermophoretic activity;following binding with HYSA,HIF-1α’s melting point increased from~55°C to~60°*** significantly enhanced the thermal stability of exogenous WT HIF-1αwhile not affecting Mut HIF-1α,suggesting that ARG-311,GLY-312,GLN-347,and GLN-387 may be involved in the interaction between HIF-1αand ***,our study revealed that HYSA induced FPT and reduced the Warburg effect of OC through mitochondrial damage by HIF-1α/HK2/SLC7A11 *** is a possible therapeutic option for OC or other cancers.

关键词： Hydroxysafflor yellow A Osteosarcoma HIF-1α FPT

Wave Attenuation and Turbulence Driven by Submerged Vegetation Under Current-Wave Flow

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China Ocean Engineering 2024年第4期38卷 602-611页

作者： HUANG Yu-ming Ding Lei WANG Yi-fei CHEN Ben yang xiao-yu DOU Xi-ping School of Water Resources and Hydropower Engineering Wuhan UniversityWuhan430072China Key Laboratory of Port Waterway and Sedimentation Engineering of MOTNanjing Hydraulic Research InstituteNanjing 210029China

A set of laboratory experiments are carried out to investigate the effect of following/opposing currents on wave *** vegetation canopies with aligned and staggered configurations were tested under the condition of various regular wave heights and current velocities,with the constant water depth being 0.60 m to create the desired submerged *** show that the vegetation-induced wave dissipation is enhanced with the increasing incident wave height.A larger velocity magnititude leads to a greater wave height attenuation for both following and opposing current ***,there is a strong positive linear correlation between the damping coefficientβand the relative wave height H_(0)/h,especially for pure wave *** the velocity profile,the distributions of U_(min)and U_(max)show different patterns under combined wave and *** time-averaged turbulent kinetic energy(TKE)vary little under pure wave and U_(c)=±0.05 m/s *** the increase of flow velocity amplitude,the time-averaged TKE shows a particularly pronounced increase trend at the top of the *** vegetation drag coefficients are obtained by a calibration *** empirical relations of drag coefficient with Reynolds and Keulegane-Carpenter numbers are proposed to further understand the wave-current-vegetation interaction mechanism.

关键词： wave attenuation rigid vegetation following and opposing currents turbulent kinetic energy