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Defect-manipulated magnetoresistance and above-room-temperature ferromagnetism in two-dimensional BaNi_(2)V_(2)O_(8)

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Chinese Chemical Letters 2024年第3期35卷 523-527页

作者： Pengfei Tan Chuanhui Zhu Jinjin Yang shuang zhao Tao Xia Mei-Huan zhao Tao Han Zheng Deng Man-Rong Li Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of ChemistrySun Yat-sen UniversityGuangzhou 510006China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Science Hainan UniversityHaikou 570228China

The intricate correlation between multiple degrees of freedom and physical properties is a fascinating area in solid state chemistry and condensed matter ***,we report a quantum-magnetic system BaNi_(2)V_(2)O_(8)(BNVO),in which the spin correlation was modulated by unusual oxidation state,leading to different magnetic *** BNVO was modified with topochemical reduction(TR)to yield TR-BNVO with partially reduced valance state of Ni^(+)in the two-dimensional NiO_(6)-honeycomb ***,the antiferromagnetic order is suppressed by the introduction of locally interposed Ni^(+)and oxygen vacancies,resulting in a ferromagnetic ground state with the transition temperature up to 710 K.A positive magnetoresistance(7.5%)was observed in the TR-BNVO at 40 K under 7 *** findings show that topological reduction is a powerful approach to engineer low-dimensional materials and accelerate the discovery of new quantum magnetism.

关键词： Layered honeycomb oxide Topochemical reduction Oxygen vacancies Ferromagnetism Magnetoresistance

Ferroelectric perovskite PbTiO3for advanced photocatalysis

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Rare Metals 2024年第9期43卷 4038-4055页

作者： shuang zhao Shi-Shi Shen Lu Han Bo-Chao Tian Na Li Wei Chen Xi-Bao Li School of Materials and Metallurgy University of Science andTechnology Liaoning School of Materials Science and Engineering Nanchang Hangkong University Department of Chemistry National University of Singapore

The ferroelectric semiconductor material PbTiO3exhibits remarkable spontaneous polarization and photoelectric properties, positioning it as a promising polar photocatalyst. The internal electric field of ferroelectrics can separate photocarriers and enhance the catalytic performance of photocatalysts. Moreover, when combined with other semiconductors, PbTiO3contributes to the construction of a depolarization field, extending the catalytic applications of PbTiO3catalysts. PbTiO3exhibits optical absorption, semiconductor, and piezoelectric properties. Its piezoelectric polarization field enhances charge separation, modulates band structure, surface charge conduction, and heterojunction interface charge conduction,thereby amplifying photocatalytic activity. This paper begins by examining the structure, properties, and preparation methods of PbTiO3. Subsequently, it delves into the optimization of PbTiO3's structure and performance,exploring applications in photocatalysis as a ferroelectric photocatalyst. Emphasis is placed on the detailed discussion of surface modification, heterostructure formation, and ferroelectric polarization of PbTiO3ferroelectrics. These aspects are thoroughly explored for their role in regulating activity and optimizing the performance of photocatalysis and photopiezoelectric catalysis. In conclusion, the paper addresses the current research status of PbTiO3ferroelectric materials and highlights the challenges that lie *** intention is to provide valuable references for the ongoing research in PbTiO3ferroelectric materials.

关键词： Polarization

A Novel Poly(3-hexylthiophene) Engineered Interface for Electrochemical Monitoring of Ascorbic Acid During the Occurrence of Glutamate-Induced Brain Cytotoxic Edemas

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Research 2024年第1期2023卷 301-313页

作者： Zexuan Meng Yuchan Zhang Lu Yang shuang zhao Qiang Zhou Jiajia Chen Jiuxi Sui Jian Wang Lizhong Guo Luyue Chang Jialing He Guixue Wang Guangchao Zang Institute of Life Science and Laboratory of Tissue and Cell BiologyLab Teaching and Management CenterChongqing Medical UniversityChongqing 400016China Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing 400030China Jinfeng Laboratory Chongqing 401329China Department of Pathophysiology Chongqing Medical UniversityChongqingChina

Although neuroelectrochemical sensing technology offers unique benefits for neuroscience research,its application is limited by substantial interference in complex brain environments while ensuring biosafety *** this study,we introduced poly(3-hexylthiophene)(P3HT)and nitrogen-doped multiwalled carbon nanotubes(N-MWCNTs)to construct a composite membrane-modified carbon fiber microelectrode(CFME/P3HT-N-MWCNTs)for ascorbic acid(AA)*** microelectrode presented good linearity,selectivity,stability,antifouling,and biocompatibility and exhibited great performance for application in neuroelectrochemical ***,we applied CFME/P3HT-N-MWCNTs to monitor AA release from in vitro nerve cells,ex vivo brain slices,and in vivo living rat brains and determined that glutamate can induce cell edema and AA *** also found that glutamate activated the N-methyl-d-aspartic acid receptor,which enhanced Na^(+) and Cl^(−) inflow to induce osmotic stress,resulting in cytotoxic edema and ultimately AA *** study is the first to observe the process of glutamate-induced brain cytotoxic edema with AA release and to reveal the *** work can benefit the application of P3HT in in vivo implant microelectrode construction to monitor neurochemicals,understand the molecular basis of nervous system diseases,and discover certain biomarkers of brain diseases.

关键词： release microelectrode Engine

Screening and identifying natural products with SARS-CoV-2 infection inhibitory activity from medicinal fungi

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Biosafety and Health 2024年第1期6卷 12-20页

作者： shuang zhao Amelia Siqi Huang Weibo Zhang Lili Ren Hexiang Wang Jianbin Wang Xinyang Shao Guanbo Wang Institute of Agri-Food Processing and Nutrition Institute of Plant ProtectionBeijing Academy of Agriculture and Forestry SciencesBejing 100097China Bejing Key Laboratory of Fruits and Vegetable Storage and Processing Key Laboratory of Vegetable Postharvest ProcessingMinistry of AgricultureBejing 100097China Dalton Academy The Affliated High School of Peking UniversityBeijing 100190China NHC Key Laboratory of Systems Biology of Pathogens and Christophe Merieux Laboratory National Institute of Pathogen BiologyBejing 100730China Key Laboratory of Respiratory Disease Pathogenomics Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China College of Biological Sciences China Agricultural UniversityBejing 100193China School of Life Sciences Tsinghua UniversityBeijing 100084China Changping Laboratory Beijing 102206China Institute for Cell Analysis Shenzhen Bay LaboratoryShenzhen 518132China

The coronavirus disease of 2019(COVID‐19),a global pandemic caused by the severe acute respiratory syndrome coronavirus 2(SARS‐CoV‐2),can result in severe health *** addition to physical preventative measures,pharmaceutical intervention is also *** natural products from medicinal fungi have shown promise as potential antiviral drugs and may serve as a source of effective components with antiviral activity against SARS‐CoV‐2 and other *** this study,we developed a workflow that integrates viral infection inhibition assays at both cellular and molecular levels,as well as molecular separation and characterization,to screen and identify natural products with antiviral *** this workflow,we screened 167 extracts extracted from 36 medicinal fungi using optimized extraction *** assessed the antiviral effects of these extracts by measuring their ability to inhibit SARS‐CoV‐2 infection and receptor binding domain‐human angiotensin‐converting enzyme 2(RBD‐hACE2)binding in *** charge‐and size‐based characterization of the active compounds through filtration and chromatographic fractionation,mass spectrometry characterization of the fractionated compounds revealed that the active components are polysaccharides and determined their monosaccharide residue *** findings provide new insights into the antiviral potential of natural products and their screening strategies and may contribute to the development of effective antiviral therapeutics against COVID‐19 and other diseases.

关键词： Medicinal fungi Natural products Antiviral activity COVID‐19 Polysaccharides

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基于社会与情绪学习的学校体系建构研究

教育科学 2024年第4期40卷 31-37页

作者：赵爽沈阳师范大学教育科学学院

构建学校体系的逻辑起点是什么?基于行政逻辑、文化逻辑、知识逻辑形成的学校体系，能够从资源和制度方面为学习提供外部保障，却不能充分满足学习活动发生所依赖的个体感知觉系统的内在自然需求，并因此有可能阻碍真实学习和有效学习... 详细信息

构建学校体系的逻辑起点是什么?基于行政逻辑、文化逻辑、知识逻辑形成的学校体系，能够从资源和制度方面为学习提供外部保障，却不能充分满足学习活动发生所依赖的个体感知觉系统的内在自然需求，并因此有可能阻碍真实学习和有效学习的发生。“社会与情绪学习”作为新学习观的代表，充分体现了学习的参与、交往和建构的本质，并形成了以学习者作为整全儿童、让真实学习活动发生和基于发展性任务挑战的“儿童与学校共生发展”理论框架，为构建基于社会与情绪学习的学习者与学习环境双向驱动、协同共生型学校功能体系提供了依据。基于此，学校要构建以安全感和艺术美感体验为基础的空间环境、以尊重平等和多元包容为基础的交往系统、以松弛感和归属感为基础的学习氛围，以此为师生的社会与情绪学习以及可持续发展提供支持和保障。

关键词：学习活动社会与情绪学习协同共生功能体系整全儿童

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3D打印隔热材料研究进展

材料导报 2024年第8期38卷 120-130页

作者：桂岩赵爽杨自春海军工程大学动力工程学院武汉430032

3D打印技术能够实现面向性能的设计以及非常规结构的制造,其在隔热领域的应用可以使材料具有更加精细、可控、定制化的结构与功能。当前,3D打印隔热材料技术仍处于快速迭代期,打印材料、结构设计和制造工艺等技术瓶颈尚待突破。本文对3... 详细信息

3D打印技术能够实现面向性能的设计以及非常规结构的制造,其在隔热领域的应用可以使材料具有更加精细、可控、定制化的结构与功能。当前,3D打印隔热材料技术仍处于快速迭代期,打印材料、结构设计和制造工艺等技术瓶颈尚待突破。本文对3D打印隔热材料的现状进行了综述,简要分析了在隔热材料制造方面较有前景的3D打印工艺,对比了各工艺的优缺点以及适用的材料类型,着重讨论了3D打印陶瓷、发泡混凝土、泡沫塑料和气凝胶材料在隔热领域的研究进展,最后总结了目前面临的技术挑战和未来的主要发展方向。

关键词：隔热材料 3D打印气凝胶陶瓷发泡混凝土泡沫塑料

A contradictory phenomenon of thicken pericardium and cardiac compression without inferior vena cava dilation:sign of IVC escape

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Journal of Geriatric Cardiology 2024年第5期21卷 583-587页

作者： Tie-Nan CHEN shuang zhao Shuai QIAO Yong-Yong HAN Qing LIU Chang-Le LIU Guang-Ping LI Tong LIU Hua-Ying FU Department of Cardiovascular Surgery Second Hospital of Tianjin Medical UniversityTianjinChina Department of Cardiology Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular DiseaseTianjin Institute of Cardi-ologyThe Second Hospital of Tianjin Medical UniversityTianjinChina Department of Oncology Second Hospital of Tianjin Medical UniversityTianjinPeople's Republic of China

A 77-year-old female presented with shortness of breath and tightness of chest was *** past medical history included hypertension and she has been taking nifedipine *** years before,she was diagnosed with pericardial effusion(Figure 1)and had pericardiocentesis *** physical examination,her blood pressure was 151/100 mm-Hg and her pulse rate was 91 beats/min.

关键词： admitted cardiac thick

CD147 Facilitates the Pathogenesis of Psoriasis through Glycolysis and H3K9me3 Modification in Keratinocytes

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Research 2024年第1期2023卷 509-523页

作者： Chao Chen Xiaoqing Yi Panpan Liu Jie Li Bei Yan Detian Zhang Lei Zhu Pian Yu Lei Li Jiaxiong Zhang Yehong Kuang shuang zhao Wu Zhu Cong Peng Xiang Chen Department of Dermatology Xiangya HospitalCentral South UniversityChangshaHunanChina National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology ChangshaHunanChina Furong Laboratory ChangshaHunanChina Hunan Key Laboratory of Skin Cancer and Psoriasis Hunan Engineering Research Center of Skin Health and DiseaseXiangya HospitalCentral South UniversityChangshaHunanChina National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunanChina

Psoriasis is a chronic inflammatory skin disease featuring rapid proliferation of epidermal *** elevated glycolysis flux has been reported in psoriasis,the molecular mechanisms underlying its pathogenesis remain *** investigated the role of the integral membrane protein CD147 in psoriasis pathogenesis,observing its high expression in psoriatic skin lesions of humans and imiquimod(IMQ)-induced mouse *** mouse models,genomic deletion of epidermal CD147 markedly attenuated IMQ-induced psoriatic *** found that CD147 interacted with glucose transporter 1(Glut1).Depletion of CD147 in the epidermis blocked glucose uptake and glycolysis in vitro and in *** CD147-knockout mice and keratinocytes,oxidative phosphorylation was increased in the epidermis,indicating CD147's pivotal role in glycolysis reprogramming during pathogenesis of *** non-targeted and targeted metabolic techniques,we found that epidermal deletion of CD147 significantly increased the production of carnitine and α-ketoglutaric acid(α-KG).

关键词： CD147 pathogenesis markedly

FRET-based two-photon benzo[a]phenothiazinium photosensitizer for fluorescence imaging-guided photodynamic therapy

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Chinese Chemical Letters 2024年第7期35卷 325-328页

作者： Yiling Li Zekun Gao Xiuxiu Yue Minhuan Lan Xiuli Zheng Benhua Wang shuang zhao Xiangzhi Song College of Chemistry&Chemical Engineering Central South UniversityChangsha 410083China Key Laboratory of Photochemical Conversion and Optoelectronic Materials and City U-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Department of Dermatology Xiangya HospitalCentral South UniversityChangsha 410083China

To overcome the conflict between the long-wavelength excitation and high singlet oxygen quantum yield of photosensitizers,we conjugated a two-photon fluorophore,tetrahydroquinoxaline coumarin(TQ),and an efficient photodynamic therapeutic agent,benzo[a]phenothiazinium(NBS-NH_(2)),through a hexamethylene linker to build a two-photon photosensitizer,*** TQ-NBS,TQ served as an energy donor and NBS-NH_(2) acted as an energy acceptor;and TQ-NBS was a F?rster resonance energy transfer(FRET)cassette with a 92.8%*** large two-photon absorption cross-section of TQ allowed photosensitizer TQ-NBS to work in a 900 nm two-photon excitation(TPE)mode,which greatly benefited the deep tissue penetration in PDT ***,the excellent phototoxicity and near-infrared fluorescence of NBS-NH2was kept in TQ-NBS under a TPE mode via a FRET *** TQ-NBS exhibited a high phototoxic efficacy in living cells and tumor-bearing mice.

关键词： Photodynamic therapy Two-photon excitation FRET-based photosensitizer Singlet oxygen Near-infrared fluorescence