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Metastable seed-crystals: epitaxial growth of branched-array organic heterostructure nanowires

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Science China Chemistry 2025年

作者： Jin Feng Zhen-Yu Geng Ting-Yao song Ying-Xin Ma Chuan-Zeng Wang Wei Zhang Hong-tao Lin Jin Zhou Shu-Ping Zhuo Shu-Hai Chen Xue-Dong Wang School of Chemistry and Chemical Engineering Shandong University of Technology Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & DevicesSoochow University College of Chemistry and Chemical Engineering Hunan Normal University

Tunable light–matter interactions are exhibited by organic low-dimensional crystals, making these crystals a promising platform for organic photonics. However, the precise synthesis of organic low-dimensional crystals remains challenging due to the stochastic nature of molecular nucleation processes. Herein, the directed nucleation process is driven by the introduction of metastable seed-crystals as the trunk, which ultimately leads to branched-array organic heterostructures. The successful formation of organic heterostructures with high-density branched arrays is attributed to the highest attachment energy (Eatt（023）=-104.25 kcal mol-1) of the exposed （023） crystal plane during the seed-crystal growth route. Significantly, these as-prepared heterostructures inherently have an ultralow lattice mismatch ratio η of 0.7%between trunk and branch, which contributes to the multi-channel photon transportation. Therefore, this work provides valuable insights into a versatile synthetic strategy for accessing low-dimensional heterostructures for integrated optoelectronics.

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Pentavalent Symmetric Graphs of Order 16p

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Acta Mathematicae Applicatae Sinica 2017年第1期33卷 115-124页

作者： song-tao GUO Hai-long HOU Jiang-tao shi School of Mathematics and Statistics Henan University of Science and Technology School of Mathematics and Information Science Yantai University

A graph is said to be symmetric if its automorphism group acts transitively on its arcs. In this paper, a complete classification of connected pentavalent symmetric graphs of order 16p is given for each prime p. It follows from this result that a connected pentavalent symmetric graph of order 16p exists if and only if p = 2 or 31, and that up to isomorphism, there are three such graphs.

关键词： symmetric graph s-transitive graph s-regular graph

Kinetics and mechanism of coal-based direct reduction of highchromium vanadium-titanium magnetite

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Journal of Iron and Steel Research International 2022年第11期29卷 1723-1733页

作者： Jian Yang tao Jiang shi-hong Ma song-tao Yang Mi Zhou School of Information Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051LiaoningChina

High-chromium vanadium-titanium magnetite(HCVTM)is a valuable resource containing metal elements such as iron,vanadium,titanium,and *** recycle these elements,direct reduction is an efficient *** mechanism and reaction kinetic parameters for the direct reduction of HCVTM were *** results show that the reduction degree increases obviously when the C/O ratio and temperature *** analysis showed a dramatic mass loss in the direct reduction of HCVTM in the temperature range of 985-1160℃.From 1200 to 1350℃,the reduction curves for the isothermal reduction of HCVTM followed the same trend,with a sharp increase in the initial reaction zone and a slight increase in the reduction rate with increasing time,and finally,the isothermal reduction process of HCVTM was divided into several limiting stages with varying degrees,with inconsistent limiting factors for the reaction rate at different *** results also show that the activation energy decreases slightly at larger degrees of ***,the apparent rate constant k(T)increased with increasing reduction temperature,with lnk(T)showing a good linear relationship with temperature.

关键词： High-chromium vanadium-titanium magnetite Direct reduction Reduction rate Kinetic Thermodynamic Analysis

缓控释肥对夏玉米创玉198主要生产性状及耕层土壤性状的影响

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河北农业科学 2012年第10期16卷 66-70页

作者：许海涛王成业刘峰郑菊红史松涛河南省驻马店市农业科学院河南驻马店463000 河南省新蔡县农业局河南新蔡463500

为明确缓控释肥对夏玉米主要生产性状和耕层土壤性状的影响,以创玉198为试材,以不施肥和施用相同养分的普通化肥(配比分期施肥、配比一次施肥)为对照,研究了施用缓控释肥对夏玉米叶面积指数、根条数、单株干物质重和产量性状以及耕层土... 详细信息

为明确缓控释肥对夏玉米主要生产性状和耕层土壤性状的影响,以创玉198为试材,以不施肥和施用相同养分的普通化肥(配比分期施肥、配比一次施肥)为对照,研究了施用缓控释肥对夏玉米叶面积指数、根条数、单株干物质重和产量性状以及耕层土壤性状的影响。结果表明:施用缓控释肥有助于夏玉米叶面积指数增大和根条数增多,单株干物质积累快,改善玉米的产量性状,明显提高千粒重和产量;可有效提高土壤蛋白酶活性以及速效氮、速效磷和速效钾含量。施用缓控释肥能够促进夏玉米生长发育、延缓叶片衰老,改善玉米主要产量性状,明显提高土壤速效养分含量,最终显著提高产量。在相同施肥量条件下,施用缓控释肥较施用普通化肥增产4.59%～8.81%。

关键词：创玉198 缓控释肥土壤性状叶面积指数根条数单株干物质重

基于博弈论的现货市场中发电厂商报价策略的研究

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科学技术与工程 2008年第15期8卷 4233-4237页

作者：王树东史松涛李海涛李景志薛怡兰州理工大学电信学院兰州730050 西北电网有限公司调度中心西安710048

在电力市场环境下,发电厂商通常要在现货市场进行交易。一种有效合理的竟价模式就显得很重要,既要激励发电企业强化管理、提高效率,从而降低上网电价,又要考虑到电力改革的市场风险与平稳过渡。运用博弈论、微观经济学、电力市场理论的... 详细信息

在电力市场环境下,发电厂商通常要在现货市场进行交易。一种有效合理的竟价模式就显得很重要,既要激励发电企业强化管理、提高效率,从而降低上网电价,又要考虑到电力改革的市场风险与平稳过渡。运用博弈论、微观经济学、电力市场理论的相关部分分析了在发电侧电力市场的现货市场中,各发电厂商面对两种市场竞价模式的博弈行为。

关键词：现货市场古诺竞争(cournot) 线性供应函数竞争(LSF) 博弈均衡分析

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基于PLC和GSM的水监测系统设计与实现

工业仪表与自动化装置 2007年第4期 17-19,38页

作者：王树东李海涛尹晓霈李景志史松涛兰州理工大学电气工程与信息工程学院甘肃兰州730050

针对目前国内灌溉系统落后的现状,提出了基于PLC与GSM的水监测系统设计方案,采用GSM组网技术和模糊PID控制,实现了对张掖盈科灌区干渠和支渠4扇闸门的自动控制。该系统具有通信速度高、实时性好、可靠性高等特点,目前已投入实际应用。

关键词：水监测系统 PLC 组态软件 GSM 模糊PID

FHL2 deficiency aggravates Candida albicans infection through decreased myelopoiesis

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Science China Life Sciences 2025年

作者： Rongmei Gao Kanchao Chen Yimin Wang Rongxia Guo Xiaoyu Zhang Peng Wu Weili Wang Qingxiang Huang Xuemei Xie Shangda Yang Yanling Lü Qian Ren Fei Liu song Chen Fengxia Ma tao Cheng Hui Cheng State Key Laboratory of Experimental Hematology National Clinical Research Center for Blood Diseases Haihe Laboratory of Cell Ecosystem Institute of Hematology & Blood Diseases Hospital Chinese Academy of Medical Sciences & Peking Union Medical College CAMS Center for Stem Cell Medicine PUMC Department of Stem Cell and Regenerative Medicine

Hematopoiesis is a finely tuned process that generates all blood cell types through self-renewal and differentiation, which is crucial for maintaining homeostasis. Acute infections can prompt a hematopoietic response known as emergency myelopoiesis. In this study, using a Candida albicans (C. albicans) infection model, we demonstrated for the first time that disruption of Fhl2 led to increased fungal burden,heightened inflammatory response and reduced survival rates. Impaired myeloid hematopoiesis and immune cell production were evident, as proved by the decreased numbers of hematopoietic stem and progenitor cells (HSPCs) and granulocytes in the bone marrow of Fhl2-deficient mice. In conclusion, FHL2 regulated emergency myelopoiesis in response to C. albicans, affecting the host’s defense against pathogens.

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SnO高压结构稳定性和电学性能研究

光谱学与光谱分析 2025年第1期45卷 82-87页

作者：刘涛黄宇轩高金金王世霞上海理工大学材料与化学学院上海200093

近年来氧化亚锡(SnO)在光、电等方面的应用日益广泛,为了拓宽SnO的应用范围,采用拉曼光谱原位测试和第一性原理计算对高压条件下SnO的结构性能和电子性质进行研究。SnO表征结果:扫描电子显微镜结果显示,所选取SnO样品为具有横向尺寸的... 详细信息

近年来氧化亚锡(SnO)在光、电等方面的应用日益广泛,为了拓宽SnO的应用范围,采用拉曼光谱原位测试和第一性原理计算对高压条件下SnO的结构性能和电子性质进行研究。SnO表征结果:扫描电子显微镜结果显示,所选取SnO样品为具有横向尺寸的片状堆叠,整体呈花状;X射线衍射图谱表明,SnO样品在常温常压下晶体结构为四方晶系结构(空间群P4/nmm)。采用Mao-Bell型金刚石压腔结合原位拉曼光谱探究了SnO样品在高压下的结构性能变化,结果显示:SnO在常压有四种拉曼振动模式(A_(1g)、B_(1g)、E_(1g)和E_(2g)),分别位于211、350、113和460 cm^(-1)波数附近,其中113和211 cm^(-1)为SnO拉曼特征峰。随SnO样品体系加压至12.5 GPa,压力使Sn分子间和原子间距不断减小,导致Sn-O键长缩短,当原子发生伸缩振动时,缩短的键长使得键能增大,因此活性拉曼振动模(E_(1g)和A_(1g))均向高频方向移动;随着体系压力的继续增大,晶格发生畸变进而使得非弹性散射强度降低,峰型宽化;当加压至8 GPa时,125和216 cm^(-1)附近振动模峰急剧减小;加压至10 GPa时两个特征峰完全消失,在非静水压环境下8~10 GPa时该物质发生了非晶化;当体系加压至12.5 GPa时,谱图中仍未出现新峰,表明高压下非晶化状态稳定。随后体系进行卸压,卸压至3 GPa后SnO的E_(1g)和A_(1g)模重新出现表明样品恢复低压下的晶体结构,卸至常压特征峰强度明显分别为110和209 cm^(-1)处与加压前吻合,证明了SnO高压相变行为具有可逆性。为进一步了解压力对SnO电学性能影响,使用第一性原理方法计算了SnO在常压和实验非晶化压力(8 GPa)下的电子性质,通过非晶化前后SnO的带隙宽度变化,探究压力对SnO导电性能的影响。结果显示,在常压下SnO为具有0.43 eV带隙的间接带隙半导体,在费米能级附近态密度没有发生重叠,8 GPa时SnO显示金属性质,由于SnO O-p、Sn-s和Sn-p轨道的态密度在费米能级处重叠,导致带隙的闭合,材料发生金属化。研究结果表明SnO高压下可能产生非晶化及压力所导致的非晶化行为可逆,同时高压导致SnO发生半导体到金属的转变,拓展了SnO高压结构和电学性质的探究,为SnO高压下的应用提供进一步帮助。

关键词： SnO 拉曼光谱金刚石压腔第一性原理电子性质

A review of microwave-metal discharge interaction:Mechanism,regulation,and application for synthesis of nanomaterials

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Nano Research 2024年第10期17卷 9225-9254页

作者： Yixuan Xie Ruiqian shi Benwei Fu Chengyi song Wen Shang Peng tao tao Deng State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China National Engineering Research Center of Special Equipment and Power System for ship and Marine Engineering Shanghai 200030China

Placing metals within microwave ovens has been generally viewed as a dangerous practice because of occurrence of violent discharge,but in recent years such discharge phenomenon has attracted increasing attention and has enabled a variety of exciting *** this work,we provide a comprehensive review of fundamental understanding of microwave-metal discharge interaction and its state-of-the-art application for nanomaterials *** introduce the microscopic interaction between different categories of materials and the electric and magnetic field of *** microwave-metal interaction,we highlight its size-dependence and point out the influence of the oxide layer on the surface of *** discuss the required conditions for occurrence of discharge,microscopic formation mechanism,and characteristic features of microwave-metal discharge *** analyzing the influence from the microwave input,discharging metals,and surrounding discharging media,we discuss the strategy for systematical regulation of the discharge *** describe the applications of the microwave-metal discharge for facile synthesis of various functional nanomaterials including core-shell carbon/metal,metal oxides,metal chalcogenides,intermetallic compounds,metallic nanoparticles and metallic compounds,and organic ***,the challenges in precise characterization and dynamic regulation of the discharge process as well as exciting application opportunities are discussed.

关键词： microwave-metal interaction discharge microwave heating skin depth nanomaterial synthesis