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气韵生动与艺术符号的意义动势

中国比较文学 2024年第2期135卷 50-68页

作者：于广华四川大学艺术学院

“气韵生动”概念自诞生以来,其意义内涵不断变化,难以明确界定。从符号美学角度来看,“气韵生动”命题主要处理艺术符号的“动势”品质相关问题。但“气韵生动”这种艺术动势有其独特性,气韵“动势”贯穿着艺术符号的符形、符义、符用... 详细信息

“气韵生动”概念自诞生以来,其意义内涵不断变化,难以明确界定。从符号美学角度来看,“气韵生动”命题主要处理艺术符号的“动势”品质相关问题。但“气韵生动”这种艺术动势有其独特性,气韵“动势”贯穿着艺术符号的符形、符义、符用三个意义维度,将艺术文本、宇宙自然及社会人生、意义接受等多个维度关联起来,是对艺术“动势”最为深刻且全面的阐释。气韵“动势”之所以能够贯穿符号意义三维,在于其“根茎式”符号空间构造及“生成性”符号意义机制。艺术气韵“动势”以一个动力性符号结构减缓意义世界“熵增”态势,让整个社会文化保持活力。

关键词：气韵生动符号美学艺术动势德勒兹

克林霉素甲硝唑搽剂原料甲硝唑供应商变更质量研究

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黑龙江医药 2024年第3期37卷 560-563页

作者：于广华冯继承黑龙江天龙药业有限公司黑龙江哈尔滨150020 黑龙江省药品审核查验中心黑龙江哈尔滨150076

目的:克林霉素甲硝唑搽剂变更原料甲硝唑供应商,为评估原料供应商变更对制剂质量的影响,对变更前后供应商原料甲硝唑进行质量对比研究;对变更前后制剂杂质进行对比研究;对变更前后制剂产品进行质量稳定性研究。方法:采用粉末X射线衍射... 详细信息

目的:克林霉素甲硝唑搽剂变更原料甲硝唑供应商,为评估原料供应商变更对制剂质量的影响,对变更前后供应商原料甲硝唑进行质量对比研究;对变更前后制剂杂质进行对比研究;对变更前后制剂产品进行质量稳定性研究。方法:采用粉末X射线衍射法、激光粒度分析法、高效液相色谱法,对原料甲硝唑进行晶型、粒度分布、杂质、含量对比研究,对制剂产品进行杂质及质量对比研究,开展稳定性试验研究。结果:变更前后供应商原料甲硝唑质量对比,为同一晶型原料药,粒度分布基本一致,杂质及含量无明显差异;甲硝唑变更前后制剂杂质及质量对比无明显差异;甲硝唑变更前后生产产品经稳定性对比试验,各项检测结果均无明显变化,质量稳定。结论:变更原料甲硝唑供应商,原料甲硝唑质量无明显差异,未对产品质量产生不良影响。

关键词：克林霉素甲硝唑搽剂甲硝唑原料变更高效液相色谱法紫外-可见分光光度法

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Co基赫斯勒合金研究进展

稀有金属材料与工程 2024年第5期53卷 1471-1485页

作者：许铭扬李明华张垚刘沛桥李阔王东伟于广华北京科技大学材料科学与工程学院材料物理与化学系北京100083 中国科学院纳米标准与检测重点实验室国家纳米科学中心北京100190

Co基赫斯勒合金是一类具有高度有序晶体结构的金属间化合物,其化学组成常用Co2XY表示,其中X为过渡金属元素,Y为主族元素。相比于其他材料,它具有更高的自旋极化率、更高的居里温度以及更低的阻尼因子。基于这些优良特性使得Co基赫斯勒... 详细信息

Co基赫斯勒合金是一类具有高度有序晶体结构的金属间化合物,其化学组成常用Co2XY表示,其中X为过渡金属元素,Y为主族元素。相比于其他材料,它具有更高的自旋极化率、更高的居里温度以及更低的阻尼因子。基于这些优良特性使得Co基赫斯勒合金在自旋阀、隧道结及半导体自旋场效应管等自旋电子学器件中具有巨大的应用前景。本文回顾了近年来国际上关于Co基赫斯勒合金在垂直磁各向异性和自旋轨道转矩上的研究,从合金成分、微观结构、磁性层的厚度、缓冲层的材料、氧化物层的材料、元素扩散等方面总结了垂直磁各向异性和自旋轨道转矩的影响因素。对垂直磁各向异性和自旋轨道转矩的影响因素的总结有助于更好地理解其深层物理机制以及在未来研究中的挑战与前景。

关键词： Co基赫斯勒合金垂直磁各向异性自旋轨道转矩影响因素

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基于深度学习的红外图像超分辨率重建方法

激光杂志 2024年第1期45卷 142-147页

作者：李岩杨得成于光华高爽刘禹彤翟茁张宝金黑河学院黑龙江黑河164300

为了提高红外图像的超分辨率重建效果,提出基于深度学习的红外图像超分辨率重建方法。利用红外图像的反射特性与红外辐射特性建立红外图像的显著性区域检测模型;通过可见光与近红外图像之间样貌差异度水平检测图像的边缘轮廓特征,提取... 详细信息

为了提高红外图像的超分辨率重建效果,提出基于深度学习的红外图像超分辨率重建方法。利用红外图像的反射特性与红外辐射特性建立红外图像的显著性区域检测模型;通过可见光与近红外图像之间样貌差异度水平检测图像的边缘轮廓特征,提取可见光与近红外光融合性特征参数;根据融合层次不同对图像信号级、像素级、特征级、决策级四个维度进行重建,提取图像的边缘、形状、纹理特征;根据特征分布的噪声水平与配准质量,采用深度学习算法实现对红外图像超分辨率重建。仿真测试结果得出,该方法进行红外图像重建的显著性特征检测能力较强,重建后将图像分辨率提升到1280×960 PPI,模板匹配准确率为49.4%,峰值信噪比PSNR值高于36.34 dB,结构相似度SSIM值高于0.972,重建效果较好,更适合用于特定场景下的红外图像目标特征识别。

关键词：深度学习红外图像超分辨率重建可见光近红外光

Construction of a High-Quality Organic-Inorganic Hybrid Heterostructure and Its Photo-response Performance

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Chinese Journal of Chemistry 2023年第1期41卷 50-56页

作者： Yadan Zhang guanghua yu Di Xue Jie Lu Xing Meng Yao Yin Qi Wang Zi Wang Lizhen Huang Lifeng Chi Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow University199 Ren'ai RoadSuzhouJiangsu 215123China Gusu Laboratory of Materials 388 Ruoshui RoadSuzhouJiangsu 215123China Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyTaipa 999078MacaoChina

The combination of metal oxide and organic semiconductor for constructing organic-inorganic hybrid heterostructure is promising to offer unique optoelectronic ***,the distinct difference in electron structure and processing technology of the two types of materials makes it usually difficult to fully deliver their complementary ***,we report the construction of a high quality organic/In_(2)O_(3) hybrid heterostructure presenting a good ambipolar transport with average electron mobility>1 cm^(2)V^(-1)·s^(-1) and hole mobility up to 0.4 cm^(2)·V^(-1)·s^(-1),respectively,together with a high-gain *** addition,the incorporation with organic film on top of In_(2)O_(3) remarkably reduces the dark current,enabling the realization of high photoconductivity response with photo-sensitivity of two magnitudes higher than that of pure *** photoconductor and phototransistor of the hybrid structure demonstrate high photoresponsivity>10^(3) AW^(-1) and detectivity up to 10^(14) Jones,demonstrating the promising functionality of such a high quality hybrid heterostructure.

关键词： Sol-gel process Thin films Semiconductors Phthalocyanines Hybrid heterostructure

Self-generating nanogaps for highly effective surface-enhanced Raman spectroscopy

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Nano Research 2022年第4期15卷 3496-3503页

作者： Yangkai Chen Huan Li Jianmei Chen Dong Li Mengyuan Zhang guanghua yu Lin Jiang Yi Zong Bin Dong Zhoufang Zeng Yandong Wang Lifeng Chi Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Institute of Functional Nano&Soft Materials(FUNSOM)Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Research and Development Center for Genetics Resource Chinese Academy of SciencesChangzhou 213000China Institute of Genetics and Development Biology Chinese Academy of SciencesBeijing 100101China

The fabrication of surface enhanced Raman spectroscopy(SERS)substrates with controlled high density hot spots still remains ***,we report highly effective SERS substrates containing the self-generating(SG)nanogaps from polystyrene nanosphere monolayer through isotropic plasma *** emergence of multimode hot spots,i.e.,metal film over nanosphere(MFON)-like hot spots(closed gaps,0 nm),individual self-aligned hot spots(discrete gaps,>20 nm)and threedimensional(3D)hot spots(nanogaps,1-10 nm),makes the SG SERS substrates superior as compared to the traditional MFON or the well-ordered self-aligned SERS substrates in terms of enhancement,uniformity,and *** SG SERS substrates can function as the excellent SERS platforms for trace molecule detection in the practical application fields.

关键词： surface-enhanced Raman spectroscopy nanogaps colloidal lithography reactive ion etching

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益肾五苓汤联合血液透析治疗尿毒症52例

西部中医药 2024年第2期37卷 145-148页

作者：赵紫杰张坤余冠华龚睿琼王雀宋世超太和县中医院安徽太和236608

目的:观察益肾五苓汤联合血液透析治疗尿毒症的临床疗效。方法:选取104例进行血液透析治疗的尿毒症患者,按就诊顺序进行分组,对照组仅进行血液透析治疗,观察组在进行血液透析的同时服用益肾五苓汤。对比两组临床治疗效果、肾功能、疼痛... 详细信息

目的:观察益肾五苓汤联合血液透析治疗尿毒症的临床疗效。方法:选取104例进行血液透析治疗的尿毒症患者,按就诊顺序进行分组,对照组仅进行血液透析治疗,观察组在进行血液透析的同时服用益肾五苓汤。对比两组临床治疗效果、肾功能、疼痛程度视觉模拟评分法(visual analogue score,VAS)评分、症状积分及血红蛋白(hemoglobin,Hb)、血细胞比容(hematocrit,HCT)、总蛋白(total protein,TP)水平。结果:总有效率观察组[92.3%(48/52)]高于对照组[78.8%(41/52)](P0.05),治疗后水平观察组Ccr明显高于对照组,SCr、24 h尿蛋白量、BUN水平低于对照组(P0.05),治疗后观察组均明显降低(P0.05),治疗后观察组均明显升高(P<0.05),且高于对照组(P<0.05)。结论:在尿毒症患者血液透析时,应用益肾五苓汤可提升临床疗效,减轻患者透析过程中的疼痛程度,调节肾功能及Hb、HCT、TP水平。

关键词：尿毒症益肾五苓汤血液透析肌酐 24 h尿蛋白量尿素氮

Low-cost intelligent reflecting surface aided Terahertz multiuser massive MIMO: design and analysis

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Science China(Information Sciences) 2021年第10期64卷 73-87页

作者： guanghua yu Xiaoming CHEN Xiaodan SHAO Caijun ZHONG College of Information Science and Electronic Engineering Zhejiang University

Terahertz(THz) multiuser massive multiple-input multiple-output(MIMO) has been envisioned as a promising technique to support massive connectivity in next-generation wireless networks. However,due to ultra-high frequency band, the path attenuation of THz channels is extremely severe, resulting in limited wireless coverage. In this paper, we propose an intelligent reflecting surface(IRS)-assisted THz multiuser massive MIMO technique to enhance coverage. First, we design an IRS-assisted THz communication framework with a low-cost sub-connected hybrid precoding architecture, including uplink data transmission and downlink data transmission. In particular, precoding errors due to the limitations of physical devices and environments are taken into consideration. Then, we derive the closed-form expressions for uplink and downlink spectral efficiencies, and reveal the impacts of system parameters. Finally, we conduct extensive simulations to verify the effectiveness of the proposed IRS-assisted THz multiuser massive MIMO technique.

关键词： THz communication IRS massive MIMO precoding error coverage enhancement

Investigation on interface of NiFeCr/NiFe/Ta films with high magnetic field sensitivity

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Rare Metals 2012年第1期31卷 22-26页

作者： Sheng, Shu Li, Wei Li, Minghua yu, guanghua Department of Materials Physics and Chemistry University of Science and Technology Beijing Beijing 100083 China

NiFeCr/NiFe/Ta films with excellent performance were prepared by magnetron sputtering system. The anisotropic magetoresistance (AMR) value (ΔR/R) and magnetic filed sensitivity (S v, S v=[d(ΔR/R)/dH]max.) for the 12 nm NiFe film deposited on NiFeCr buffer layer were 3.66% and 1.42 × 10−4 %·T−1, respectively. The higher S v of the film is close to that of a spin valve (SV). The microstructure analysis shows that the NiFeCr buffer layer has adopted the same structure with the same interplanar distance as the NiFe layer, inducing a strong NiFe (111) texture, and that the NiFeCr/NiFe interface is quite smooth, leading to a high degree of specular reflection of conduction electrons. Both increase the ΔR and reduce the R in the film, which lead to the high ΔR/R. Clean substrate surfaces are critical for preparation of high performance NiFeCr/NiFe/Ta films, and sputter cleaning or pre-deposition of 5 nm amorphous Al2O3 layer in the deposition chamber can provide the required clean substrate surfaces for the growth of the buffer layer.

关键词： ultrathin NiFe films magnetic field sensitivity lattice matching