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中国泛审美传统的意义生成机制

上海大学学报（社会科学版） 2024年第5期41卷 143-154页

作者：于广华四川大学艺术学院成都610065

泛审美是中国美学传统的鲜明特质,审美意义无孔不入地渗入中国传统社会生活的各个方面,中国美学传统的泛审美特质需要新的理论方法介入。符号美学是对“美学文本”进行形式意义分析的方法论,通过符号美学可以发现中国泛审美传统独特的... 详细信息

泛审美是中国美学传统的鲜明特质,审美意义无孔不入地渗入中国传统社会生活的各个方面,中国美学传统的泛审美特质需要新的理论方法介入。符号美学是对“美学文本”进行形式意义分析的方法论,通过符号美学可以发现中国泛审美传统独特的意义生成方式:意义的四联体滑动、意义的“部分滑动”与四性共存、意义的跨界滑动与泛审美综合体建构。中国传统审美符号的四个不同意义维度兼容互渗、交融共存,在审美意义生成的同时,又向人的生活世界全面敞开,并适时地将其提升至天人合一的精神境界。

关键词：中华传统美学泛审美符号美学

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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

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

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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

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 *** anisotropic magetoresistance (AMR) value (ΔR/R) and magnetic filed sensitivity (Sv,Sv=[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,*** higher Sv 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 *** increase the ΔR and reduce the R in the film,which lead to the high ΔR/*** 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 re-quired clean substrate surfaces for the growth of the buffer layer.

关键词： ultrathin NiFe films magnetic field sensitivity lattice matching

Ultrathin permalloy films

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Chinese Science Bulletin 2001年第20期46卷 1681-1685页

作者： yu guanghua Zhao Hongchen Zhu Fengwu Univ Sci & Technol Beijing Dept Mat Phys Beijing 100083 Peoples R China

In view of the principle of glow-discharge, ul-trathin Ni81Fe19(12 nm) films were prepared at an ultrahigh base vacuum. The anisotropic magnetoresistance coefficient (△R/R%) for Ni81Fe19(12 nm) film reaches 1.2%, while the value of its coercivity is 127 A/m (i.e. 1.6 Oe). Ultrathin Ni81Fe19(12 nm) films were also prepared at a lower base vacuum. The comparison of the structure for two kinds of films shows that the films prepared at an ultrahigh base vacuum have a smoother surface, a denser structure with a few defects; the films prepared at a lower base vacuum have a rougher surface, a porouser structure with some defects.

关键词： NiFe film anisotropic magnetoresistance coercivity structure.

Improvement of interfacial electron scattering by introduced NiFe nanoparticles

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Rare Metals 2012年第2期31卷 117-120页

作者： Huangfu, Jiashun Liu, Yang Feng, Chun yu, guanghua Li, Baohe Department of Materials Physics and Chemistry University of Science and Technology Beijing Beijing 100083 China School of Science Beijing Technology and Business University Beijing 100048 China

Ta/MgO/NiFe/MgO/Ta ultrathin films with and without intercalation of NiFe nanoparticles in MgO layers were prepared by magnetron sputtering, followed by a vacuum annealing process. The measured and calculated results show that the former has higher specular electron scattering (SES) parameter at MgO/NiFe interfaces, lower resistivity, and higher magnetoresistance (MR). The improved transport properties (TPs) are mainly attributed to the suppressed diffuse electron scattering by means of the introduction of NiFe nanoparticles.

关键词： specular electron scattering mean free path MgO NiFe nanoparticle

Magnetic property and recording performance of chemical deposition CoP thin films

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Rare Metals 2012年第3期31卷 260-263页

作者： Wang, Haicheng Zhou, Qunfei Teng, Jiao Wang, Lijin yu, guanghua Department of Material Physics and Chemistry University of Science and Technology Beijing Beijing 100083 China

The thickness of CoP thin films prepared by wet chemical deposition is of crucial importance on magnetic property and recording perform-ance. The coercivity of CoP films decreased with increasing film thickness. The coercivity was 45.37 kA m 1 at the thickness of 300 nm, and decreased to 21.65 kA m 1 at 5.7 μm. Recording performance tests indicate that, for drums with the same size, different recorded magnetic pole density have different thickness requirements. For 40 mm diameter magnetic drum, the optimal CoP thickness is 3～10 μm for 256 re-corded magnetic poles, 1～2 μm for 512 recorded magnetic poles, and 500～800 nm for 1024 recorded magnetic poles.

关键词： CoP thin films magnetic property magnetic recording