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Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： da Wan Shuwei tang Shulin Bai Xiaodong li Peng Ai Wanrong Guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

我国药品与保健食品、特医食品、新资源食品的界定和监管比较

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现代药物与临床 2020年第2期35卷 372-377页

作者：唐辉汤立达天津药物研究院天津300301

围绕国内现行相关法律及监管规章,对药品、保健食品、特医食品和新资源食品的基本内涵、适用范围、配方组成等进行梳理,并对4类物品的监管制度进行比较分析。旨在帮助人们提高对4类物品的认知与分辨能力,提醒生产厂商明确四者相应的监... 详细信息

围绕国内现行相关法律及监管规章,对药品、保健食品、特医食品和新资源食品的基本内涵、适用范围、配方组成等进行梳理,并对4类物品的监管制度进行比较分析。旨在帮助人们提高对4类物品的认知与分辨能力,提醒生产厂商明确四者相应的监管要求,杜绝违法违规行为。

关键词：药品保健食品特医食品新资源食品

Preparation of silver nanoparticles through the reduction of straw-extracted lignin and its antibacterial hydrogel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 504-514页

作者： Lou Zhang Shuo li Fu tang Jingkai Zhang Yuetong Kang Hean Zhang lidong li State Key Laboratory for Advanced Metals and Materials School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Silver nanoparticles(Ag NPs)have attracted attention in the field of biomaterials due to their excellent antibacterial ***,the reducing and stabilizing agents used for the chemical reduction of Ag NPs are usually toxic and may cause water *** this work,Ag NPs(31.2 nm in diameter)were prepared using the extract of straw,an agricultural waste,as the reducing and stabilizing *** analysis revealed that the straw extract contained lignin,the structure of which possesses phenolic hydroxyl and methoxy groups that facilitate the reduction of silver salts into Ag *** surfaces of Ag NPs were negatively charged due to the encapsulation of a thin layer of lignin molecules that prevented their *** the prepared Ag NPs were added to the precursor solution of acrylamide,free radical polymerization was triggered without the need for extra heating or light irradiation,resulting in the rapid formation of an Ag NP-polyacrylamide composite *** inhibition zone test proved that the composite hydrogel possessed excellent antibacterial ability due to the presence of Ag *** prepared hydrogel may have potential applications in the fabrication of biomedical materials,such as antibacterial dressings.

关键词： silver nanoparticles hydrogel straw extraction antibacterial

Cell polarization in ischemic stroke: molecular mechanisms and advances

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Neural Regeneration Research 2025年第3期20卷 632-645页

作者： Yuanwei li Xiaoxiao Xu Xuan Wu Jiarui li Shiling Chen danyang Chen Gaigai li Zhouping tang Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

Ischemic stroke is a cerebrovascular disease associated with high mortality and disability rates. Since the inflammation and immune response play a central role in driving ischemic damage, it becomes essential to modulate excessive inflammatory reactions to promote cell survival and facilitate tissue repair around the injury site. Various cell types are involved in the inflammatory response, including microglia, astrocytes, and neutrophils, each exhibiting distinct phenotypic profiles upon stimulation. They display either proinflammatory or anti-inflammatory states, a phenomenon known as ‘cell polarization.’ There are two cell polarization therapy strategies. The first involves inducing cells into a neuroprotective phenotype in vitro, then reintroducing them autologously. The second approach utilizes small molecular substances to directly affect cells in vivo. In this review, we elucidate the polarization dynamics of the three reactive cell populations(microglia, astrocytes, and neutrophils) in the context of ischemic stroke, and provide a comprehensive summary of the molecular mechanisms involved in their phenotypic switching. By unraveling the complexity of cell polarization, we hope to offer insights for future research on neuroinflammation and novel therapeutic strategies for ischemic stroke.

关键词： astrocyte polarization immune regulation inflammation ischemic injury microglia polarization neutrophil polarization signaling pathways stroke

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蚓激酶的研究与临床应用

中草药 2006年第2期37卷 295-298页

作者：闫峻汤立达天津中医学院天津300193 天津药物研究院天津300193

蚓激酶作为中药地龙(即蚯蚓)的主要抗凝、溶栓成分,经动物实验及临床观察证实具有良好的纤溶、抗凝、溶栓和改善血流变等药理作用,并取得了较理想的结果。与同类药物比较,蚓激酶具有不良反应小、安全性高、疗效较显著、生产成本低等优... 详细信息

蚓激酶作为中药地龙(即蚯蚓)的主要抗凝、溶栓成分,经动物实验及临床观察证实具有良好的纤溶、抗凝、溶栓和改善血流变等药理作用,并取得了较理想的结果。与同类药物比较,蚓激酶具有不良反应小、安全性高、疗效较显著、生产成本低等优势。国内外的学者对蚓激酶进行了大量的研究,现就蚓激酶基本的理化性质、生化方面、作用机制、临床应用等的研究成果做一简要综述,总结其中存在的问题并对前景作出展望,以期能有助于今后对蚓激酶的进一步研究开发和利用。

关键词：抗凝活性蚓激酶蚯蚓

Aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： li Xu Huiming Xu Changyong tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromyelitis optica spectrum disorders are neuroinflammatory demyelinating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromyelitis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromyelitis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly expressed on the membrane of astrocyte endfeet,most current experimental models are based on aquaporin-4-IgG that initially targets *** experimental models have successfully simulated many pathological features of neuromyelitis optica spectrum disorders,such as aquaporin-4 loss,astrocytopathy,granulocyte and macrophage infiltration,complement activation,demyelination,and neuronal loss;however,they do not fully capture the pathological process of human neuromyelitis optica spectrum *** this review,we summarize the currently known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromyelitis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromyelitis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromyelitis optica spectrum disorder pathogenesis

基于压缩传输组件的WebGIS海量数据传输方案

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计算机工程与设计 2006年第6期27卷 1048-1051页

作者：汤大立熊坚 TranSmart Technologies Inc usamadison53713 湖南大学软件学院湖南长沙410082

针对企业级WebGIS应用中海量数据网络传输的瓶颈问题,设计了一对具有压缩和解压功能的数据传输控制器组件。该组件通过控制服务器与浏览器间的数据传输方式,透明压缩和解压数据,无缝连接和集成WebGIS,从而扩展了利用商用WebGIS开发应用... 详细信息

针对企业级WebGIS应用中海量数据网络传输的瓶颈问题,设计了一对具有压缩和解压功能的数据传输控制器组件。该组件通过控制服务器与浏览器间的数据传输方式,透明压缩和解压数据,无缝连接和集成WebGIS,从而扩展了利用商用WebGIS开发应用系统的功能和应用范围。通过对该组件在多种网络环境下传输海量数据的应用试验,结果表明合理应用该解决方案,能满足大多数企业级WebGIS应用系统的开发和应用需求。

关键词：数据传输控制器 WebGIS 压缩解压网络传输

金属基质蛋白酶类抗癌靶点及靶向多肽药物研究进展

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中国新药杂志 2014年第19期23卷 2231-2237页

作者：华丹龚珉汤立达天津医科大学天津300070 天津药物研究院天津300193

金属基质蛋白酶(MMP)作为锌依赖性肽链内切酶,家族成员繁多,与肿瘤的发生发展密切相关,所以经常将MMP作为抗癌靶点进行药物研究。早期的MMP靶点类抗癌药物是MMP的天然抑制蛋白——MMP组织抑制剂(TIMP),后来通过研究又发现了很多化学分... 详细信息

金属基质蛋白酶(MMP)作为锌依赖性肽链内切酶,家族成员繁多,与肿瘤的发生发展密切相关,所以经常将MMP作为抗癌靶点进行药物研究。早期的MMP靶点类抗癌药物是MMP的天然抑制蛋白——MMP组织抑制剂(TIMP),后来通过研究又发现了很多化学分子抑制剂(如马马司他、坦诺司他、普啉司他),但这些化学药物临床有效性和安全性较差,很难应用于临床。多肽类抑制剂由于具有相对分子质量小、结合效率高等优点比较适合作为金属基质蛋白酶的分子抑制剂或靶向释药载体。本文对MMP这一靶点和抗癌药物的研究进展进行介绍。

关键词：金属基质蛋白酶多肽癌症

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中药网络药理学研究中存在的问题与发展展望

中草药 2020年第8期51卷 2232-2237页

作者：孟凡翠汤立达天津药物研究院天津市新药设计与发现重点实验室天津300301 天津药物研究院天津300301

网络药理学近年来已成为中药研究的热门工具,其系统性和整体性特点为复杂中药体系的研究提供了新思路,被广泛用于筛选中药有效成分、阐释作用机制和揭示方剂配伍原理等,为中药合理用药提供技术支持,促进中药现代化进展。通过对中药网络... 详细信息

网络药理学近年来已成为中药研究的热门工具,其系统性和整体性特点为复杂中药体系的研究提供了新思路,被广泛用于筛选中药有效成分、阐释作用机制和揭示方剂配伍原理等,为中药合理用药提供技术支持,促进中药现代化进展。通过对中药网络药理学研究现状进行梳理分析,指出中药网络药理学研究中存在的问题和面临的挑战,同时对中药网络药理学的发展方向进行了展望。将网络药理学应用于中医药研究时必须要注重中药自身的特点,开发出适合中医药体系研究的网络药理学方法。

关键词：网络药理学中药靶点协同作用系统性整体性