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Deposition of Diamond-Like Carbon Films with Femtosecond KrF Laser Pulses

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Chinese Physics Letters 2000年第7期17卷 540-541页

作者： yao dong-sheng LIU Jing-ru WANG Li-Ge YU Chang-Xuan ZHAN Ru-juan Department of Modern Physics University of Science and Technology of ChinaHeFei 230026 Third Division Northwest Institute of Nuclear TechnologyXVan 710024

Hydrogen-free diamond-like carbon (DLC) films with the optical band gaps of 2.0-2.7 e V and the microhardness of 40-55 GPa are deposited by femtosecond KrF laser pulses. The film microstructure of nanometer spheroid is observed. The filrn microhardness is improved with the increase of ion kinetic energy of plasma plume from 300 to 600 eV. The characteristics of DLC film deposition with fs pulses is discussed.

关键词： KrF Femto film

Frequency Response of Modulated Electroluminescence of Light-Emitting Diodes

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Chinese Physics Letters 2011年第10期28卷 244-247页

作者： FENG Lie-Feng LI Yang LI Ding WANG Cun-Da ZHANG Guo-Yi yao dong-sheng LIU Wei-Fang XING Peng-Fei Department of Applied Physics Tianjin UniversityTianjin 300072 Research Center for Wide-band Gap Semiconductors School of PhysicsPeking UniversityBeijing 100871

Frequency responses of modulated electroluminescence(EL)of light-emitting diodes were measured using a testing *** increasing frequency of the ac signal,the relative light intensity(RLI)clearly ***,a peculiar asynchrony between the RLI and ac small-signal is *** frequencies higher than 10 kHz,the RLI clearly lags behind the ac signal and the absolute value of the lagging angle is nearly proportional to the signal *** the classical recombination model of light-emitting diodes under ac small-signal modulation,these abnormal characteristics of modulated EL can be clearly explained.

关键词： diodes absolute testing

Metabolic disorders of fatty acids and fatty acid amides associated with human gastric cancer morbidity

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Chinese Medical Journal 2012年第5期125卷 757-763页

作者： SONG Hu PENG Jun-sheng yao dong-sheng LIU Da-ling YANG Zu-li DU Yan-ping XIANG Jun Department of Gastrointestinal Surgery Xuzhou Central Hospital（Affiliated Hospital of Medical College of Southeast University）Xuzhou Jiangsu 221009 China Department of Gastrointestinal Surge% Sixth Affiliated Hospital（Gaslrointestinal ＆ Anal Hospital） Sun Yat-sen University GuangzhouGuangdong 510655 China National Engineering Research Center of Genetic Medicine Ji NanUniversity Guangzhou Guangdong 510632 China

Background Gastric cancer （GC） is one of the most common types of cancer in the world. A change in the metabolism of lipids in tumor cells could lead to the pathogenesis of cancer. In this study, we investigated fat... 详细信息

关键词： gastric cancer fatty acids amides metabolic disorders

Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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Nano-Micro Letters 2025年第1期17卷 281-292页

作者： Xing Wang Wei Pi sheng Hu Haifeng Bao Na yao Wei Luo State Key Laboratory of New Textile Materials and Advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer

A Hybrid Approach for Pavement Crack Detection Using Mask R-CNN and Vision Transformer Model

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Computers, Materials & Continua 2025年第1期82卷 561-577页

作者： Shorouq Alshawabkeh Li Wu Daojun dong yao Cheng Liping Li Faculty of Engineering China University of GeosciencesWuhan430074China

Detecting pavement cracks is critical for road safety and infrastructure *** methods,relying on manual inspection and basic image processing,are time-consuming and prone to *** deep-learning(DL)methods automate crack detection,but many still struggle with variable crack patterns and environmental *** study aims to address these limitations by introducing the Masker Transformer,a novel hybrid deep learning model that integrates the precise localization capabilities of Mask Region-based Convolutional Neural Network(Mask R-CNN)with the global contextual awareness of Vision Transformer(ViT).The research focuses on leveraging the strengths of both architectures to enhance segmentation accuracy and adaptability across different pavement *** evaluated the performance of theMaskerTransformer against other state-of-theartmodels such asU-Net,TransformerU-Net(TransUNet),U-NetTransformer(UNETr),SwinU-NetTransformer(Swin-UNETr),You Only Look Once version 8(YoloV8),and Mask R-CNN using two benchmark datasets:Crack500 and *** findings reveal that the MaskerTransformer significantly outperforms the existing models,achieving the highest Dice SimilarityCoefficient(DSC),precision,recall,and F1-Score across both ***,the model attained a DSC of 80.04%on Crack500 and 91.37%on DeepCrack,demonstrating superior segmentation accuracy and *** high precision and recall rates further substantiate its effectiveness in real-world applications,suggesting that the Masker Transformer can serve as a robust tool for automated pavement crack detection,potentially replacing more traditional methods.

关键词： Pavement crack segmentation transportation deep learning vision transformer Mask R-CNN image segmentation

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类柱体空间目标的星等计算模型研究

光电工程 2008年第7期35卷 33-37页

作者：谈斌姚东升向春生张己化石家庄军械工程学院石家庄050003 乌鲁木齐21信箱乌鲁木齐841700 中国科学院光电技术研究所成都610209

针对类似柱体的空间目标的视亮度计算模型,从空间目标的等效视星等的一般计算公式出发,利用面元模型,详细推导了类似棱柱的空间目标的光照有效反射面积,基于圆柱可由棱柱近似的思想,直接得到了类圆柱体目标的有效反射面积计算模型;为了... 详细信息

针对类似柱体的空间目标的视亮度计算模型,从空间目标的等效视星等的一般计算公式出发,利用面元模型,详细推导了类似棱柱的空间目标的光照有效反射面积,基于圆柱可由棱柱近似的思想,直接得到了类圆柱体目标的有效反射面积计算模型;为了使星等亮度模型易于求解,采用卫星工具包(STK)提供模型计算中涉及的太阳、目标和地面三者的时空关系,给出了基于STK的星等计算过程,并进行了实例计算和分析,结果表明本文的星等模型易于利用STK实现,且类圆柱体模型比经验模型具有更高的分辨率。将计算结果与其它计算方法比较,所得结果更为细致。

关键词：星等模型卫星工具包有效反射面积空间目标

一种酿酒酵母附加型分泌表达载体pYES2/CT/α-factor的构建及鉴定

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中国生物工程杂志 2009年第12期29卷 49-53页

作者：胡亚冬姚冬生广州科仁生物工程有限公司广州510600 暨南大学微生物技术研究所广州510632

以pPIC9为模板,通过PCR扩增获得酿酒酵母的α-交配因子(α-factor),并克隆至酿酒酵母胞内表达载体pYES2/CT中,构建了一种新型酿酒酵母附加型分泌表达载体pYES2/CT/α-factor(pYCα)。再将甘露聚糖酶基因(mannase,man)通过酶切、连接克隆... 详细信息

以pPIC9为模板,通过PCR扩增获得酿酒酵母的α-交配因子(α-factor),并克隆至酿酒酵母胞内表达载体pYES2/CT中,构建了一种新型酿酒酵母附加型分泌表达载体pYES2/CT/α-factor(pYCα)。再将甘露聚糖酶基因(mannase,man)通过酶切、连接克隆至pYCα的α-factor的下游,构建了pYCα-man重组载体检验pYCα的分泌性能和稳定性。结果显示α-factor可引导甘露聚糖酶基因在胞外分泌表达,在曲利本兰培养基上形成明显的水解圈,进一步分析重组菌胞外和胞内酶活,结果显示对照INVSc1/pYCα的两种酶活都未检测到,而INVSc1/pYCα-man具有明显的胞外酶活,未检测到胞内酶活,说明构建的pYCα具有良好的分泌性能;稳定性实验表明重组质粒连续培养150 h仍具有良好的稳定性。

关键词：酿酒酵母信号肽分泌表达

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玉米粉质胚乳突变体的研究进展

自然杂志 2013年第2期35卷 105-111页

作者：姚东升宋任涛上海大学生命科学学院

玉米是世界上重要的粮食作物,也是植物分子遗传研究的重要模式。通过对玉米的长期研究积累了大量的遗传突变体,其中有一类籽粒突变体被称为粉质(opaque或floury)胚乳突变体,表现为籽粒硬度和透明度下降。同时,这类突变体中的opaque2等,... 详细信息

玉米是世界上重要的粮食作物,也是植物分子遗传研究的重要模式。通过对玉米的长期研究积累了大量的遗传突变体,其中有一类籽粒突变体被称为粉质(opaque或floury)胚乳突变体,表现为籽粒硬度和透明度下降。同时,这类突变体中的opaque2等,被发现能够显著改善玉米籽粒的蛋白营养水平,使得粉质胚乳突变体受到了很大的关注。早年只有少数的粉质胚乳突变体基因被克隆和研究,如opaque2和floury2等,被发现与玉米主要的储藏蛋白转录和合成有关。近年来,随着科学技术和研究能力的提高,更多的opaque突变体基因,如opaque1、opaque5、opaque7等,被克隆和研究,为我们揭示了玉米籽粒中储藏物质的合成、转运等更深入的调控机制,拓展了我们对玉米胚乳发育和代谢的知识。

关键词：玉米粉质突变体储藏物质优质蛋白玉米

High frequency characteristics of (Ni_(75)Fe_2)_x(Zn O)_(1-x) granular thin films with tunable damping coefficient

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Chinese Physics B 2015年第4期24卷 441-444页

作者：李文春左亚路刘晓虹魏清清周雪云姚东升 Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology Faculty of ScienceTianjin University The Key Laboratory for Magnetism and Magnetic Materials Lanzhou University Faculty of Science Jiujiang University

The effect of the volume fraction of ferromagnetic metal （x） in （Ni75Fe25）x（ZnO）1-x nanogranular thin films on microstructural, soft-magnetic, and high-frequency properties was investigated. Good soft-magnetic properties were obtained in a broad x range, with 0.55 〈 x 〈 0.82. High resolution transmission electron microscopy （HRTEM） observations reveal that the grain size of the samples is lower than 14 nm, and that it decreases with decreasing x. Of special interest, our investigation of the permeability spectra indicates that these films exhibit an adjustable frequency linewidth of resonance peak, dependant upon changing x. Correspondingly, large and adjustable damping coefficients （aeff） from 0.023 to 0.043 were achieved by decreasing x from 0.82 to 0.55. Combined with the HRTEM results, the variation of αeff with x was analyzed in detail.

关键词： soft magnetic properties high frequency properties damping factor granular film