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真·静·线形体
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作者 李镝 《美苑》 CSSCI 1995年第3期14-14,共1页
偶然翻看儿时(四岁前)的一个画本,其中有一辆火车,摇摇晃晃似要脱节的车厢,蜈蚣脚一样飞跑的车轮和软梯般的铁轨,还有瞪着眼睛的车头,无生命的火车被赋予了生命,那种率真和美是不加任何粉饰的,也无技巧可言,一切都不合理然而合情。可经... 偶然翻看儿时(四岁前)的一个画本,其中有一辆火车,摇摇晃晃似要脱节的车厢,蜈蚣脚一样飞跑的车轮和软梯般的铁轨,还有瞪着眼睛的车头,无生命的火车被赋予了生命,那种率真和美是不加任何粉饰的,也无技巧可言,一切都不合理然而合情。可经过多年专业训练的我,双手和大脑在今天却是如此笨拙,扪心自省,苦思良久,原来我缺乏的是儿时的那一份真,所谓“朴拙”、“深刻”,竭尽心力的营造、津津乐道的技巧与儿童认认真真而又随心所欲的涂鸦相比,竟有天壤之别,那些干巴巴和装腔作势的成人作品在充满神秘、想象、纯真的儿童之作面前是如此的苍白无味,难怪毕加索、马蒂斯和夏加尔及齐白石和林风眠都沉迷于自由幻想的无邪境地,技巧和理论是十分必要的,但无法之法乃是艺术的最高境界,让我们以儿童般纯真的心去面对生命,面对艺术。 展开更多
关键词 线形体 布朗库西 儿童 无法之法 专业训练 林风眠 无技巧 马蒂斯 最高境界 作品
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微生物线粒体衍生细胞器及产氢体研究进展
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作者 张慧 孙悦迎 +2 位作者 雷萍 张文隽 付景 《陕西师范大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第S2期82-84,共3页
对线粒体衍生细胞器的动基体、线性体和隐性体以及产氢体的形态、结构、功能和起源等方面进行了综述,并总结了近十年来线粒体衍生细胞器及产氢体的研究进展.
关键词 线粒体衍生细胞器 动基体 线形体 形体 产氢体
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Effect of wire diameter compression ratio on drawing deformation of micro copper wire
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作者 Tao HUANG Han-jiang WU +3 位作者 Ke-xing SONG Yan-min ZHANG Yan-jun ZHOU Shao-lin LI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2024年第8期2605-2618,共14页
A crystal plasticity finite element model was developed for the drawing deformation of pure copper micro wire,based on rate-dependent crystal plasticity theory.The impact of wire diameter compression ratio on the micr... A crystal plasticity finite element model was developed for the drawing deformation of pure copper micro wire,based on rate-dependent crystal plasticity theory.The impact of wire diameter compression ratio on the micro-mechanical deformation behavior during the wire drawing process was investigated.Results indicate that the internal deformation and slip of the drawn wire are unevenly distributed,forming distinct slip and non-slip zones.Additionally,horizontal strain concentration bands develop within the drawn wire.As the wire diameter compression ratio increases,the strength of the slip systems and the extent of slip zones inside the deformation zone also increase.However,the fluctuating stress state,induced by contact pressure and frictional stress,results in a rough and uneven wire surface and diminishes the stability of the drawing process. 展开更多
关键词 micro copper wire drawing deformation crystal plasticity finite element slip mode
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谈素描几何形体的教学 被引量:1
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作者 范美莲 《晋中学院学报》 2007年第5期93-95,共3页
几何形体都有它自身的造型规律,掌握它是学习素描几何形体的主要目的。科学安排素描几何形体教学,有以下一些途径:明确目的,抓住重点;循序渐进,逐步深入;从线状几何形体入手,重视结构素描训练;研究明暗规律,掌握明暗画法。
关键词 几何形体 循序渐进 线状几何形体(结构素描教具)
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Formation mechanism and criterion of linear segregation in ZL205A alloy 被引量:10
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作者 王晔 吴士平 +3 位作者 薛祥 陈瑞润 张建兵 肖文峰 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第11期3632-3638,共7页
The experiments and numerical simulation were conducted for ZL205A aluminum alloy cylindrical shell casting. The formation mechanism of the linear segregation produced by the low pressure die casting (LPDC) process wa... The experiments and numerical simulation were conducted for ZL205A aluminum alloy cylindrical shell casting. The formation mechanism of the linear segregation produced by the low pressure die casting (LPDC) process was investigated. And the heat transfer of the casting during solidification process was analyzed by simulation technique, resulting from the information of linear segregation obtained by plenty of experiments. The new linear segregation criterion was proposed through the simulation and experimental results. It was found that the melting metal with high Cu contents was feeding the crack shrinkage formed by the tearing under the effect of feeding pressure during the later solidification, which led to the formation of linear segregation. The control methods for the linear segregation were suggested based on the proposed mechanism. Finally, the criterion of linear segregation was confirmed by the production of the actual castings. 展开更多
关键词 cylindrical shell casting linear segregation formation mechanism CRITERION control method
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Identification of Phlebotomus chinensis(Diptera:Psychodidae) inferred by morphological characters and molecular markers 被引量:6
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作者 张丽 马雅军 《Entomotaxonomia》 CSCD 北大核心 2012年第1期71-80,共10页
To clarify the taxonomic status of Phlebotomus chinensb, the morphological characters of Ph. chinensis from Shaanxi, Henan, Sichuan and Gansu Provinces, and Ph. wui and Ph. longiductus from Xinjiang were examined and ... To clarify the taxonomic status of Phlebotomus chinensb, the morphological characters of Ph. chinensis from Shaanxi, Henan, Sichuan and Gansu Provinces, and Ph. wui and Ph. longiductus from Xinjiang were examined and the rDNA-ITS2 region and mtDNA Cyt b gene sequences were analyzed simultaneously. It was found that morphological variation was very low in Ph. chinensis among the different localities; the wings of adult samples distributed in high-altitude areas were merely longer. The rDNA-ITS2 and mtDNA Cyt b sequences had an intraspecific variability. The relationships among species in the genus Phlebotomus can be inferred by molecular markers. These results suggest that there is an obvious genetic divergence at the molecular level among the Ph. chinensis populations in China. 展开更多
关键词 Phlebotomus chinensis MORPHOLOGY RDNA MTDNA
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Calculations of rock matrix modulus based on a linear regression relation 被引量:5
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作者 贺锡雷 贺振华 +2 位作者 汪瑞良 王绪本 蒋炼 《Applied Geophysics》 SCIE CSCD 2011年第3期155-162,239,共9页
The rock matrix bulk modulus or its inverse, the compressive coefficient, is an important input parameter for fluid substitution by the Biot-Gassmann equation in reservoir prediction. However, it is not easy to accura... The rock matrix bulk modulus or its inverse, the compressive coefficient, is an important input parameter for fluid substitution by the Biot-Gassmann equation in reservoir prediction. However, it is not easy to accurately estimate the bulk modulus by using conventional methods. In this paper, we present a new linear regression equation for calculating the parameter. In order to get this equation, we first derive a simplified Gassmann equation by using a reasonable assumption in which the compressive coefficient of the saturated pore fluid is much greater than the rock matrix, and, second, we use the Eshelby- Walsh relation to replace the equivalent modulus of a dry rock in the Gassmann equation. Results from the rock physics analysis of rock sample from a carbonate area show that rock matrix compressive coefficients calculated with water-saturated and dry rock samples using the linear regression method are very close (their error is less than 1%). This means the new method is accurate and reliable. 展开更多
关键词 Bulk modulus rock matrix fluid substitution rock physics linear regression
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小儿内分泌腺疾病及代谢病
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《国外科技资料目录(医药卫生)》 2000年第2期97-97,共1页
0005542 圣彼德堡市儿童和少年血脂质光谱指数[俄,英摘]/∥.-1998,(6).-41~44友谊医 0005543 Ⅰ型糖尿病患儿的亚临床神经病变/Meh D∥Electroencephalogr Clin Neurophysiol.-1998,109(3).-274~280 医科情 0005544 伴有先天性代谢异... 0005542 圣彼德堡市儿童和少年血脂质光谱指数[俄,英摘]/∥.-1998,(6).-41~44友谊医 0005543 Ⅰ型糖尿病患儿的亚临床神经病变/Meh D∥Electroencephalogr Clin Neurophysiol.-1998,109(3).-274~280 医科情 0005544 伴有先天性代谢异常的肌病[日]/杉江秀夫∥小儿内科.-1998,30(10).-1322~1328 冀医情 0005545 线粒体肌病[日]/村木可枝∥小儿内科.-1998,30(10).-1317~1321 冀医情 0005546 线形体肌病[日]/斋藤茂子∥小儿内科.-1998,30(10).-1301~1304 展开更多
关键词 小儿内科 亚临床神经病 型糖尿病 光谱指数 先天性代谢异常 血脂质 线形体肌病 线粒体肌病 内分泌腺 儿童
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Effect of solanine on the membrane potential of mitochondria in HepG_2 cells and [Ca^(2+)]i in the cells 被引量:17
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作者 Shi-Yong Gao Qiu-Juan Wang Yu-Bin Ji 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第21期3359-3367,共9页
AIM: To observe the effect of solanine on the membrane potential of mitochondria in HepG2 cells and [Ca^2+]i in the cells, and to uncover the mechanism by which solanine induces apoptosis.METHODS: HepG2 cells were ... AIM: To observe the effect of solanine on the membrane potential of mitochondria in HepG2 cells and [Ca^2+]i in the cells, and to uncover the mechanism by which solanine induces apoptosis.METHODS: HepG2 cells were double stained with AO/EB, and morphological changes of the cells were observed using laser confocal scanning microscopy (LCSM). HepG2 cells were stained with TMRE, and change in the membrane potential of mitochondria in the cells were observed using LCSM. HepG2 cells were double stained with Fluo-3/AM, and change of [Ca^2+]i in the cells were observed using LCSM. HepG2 cells were double stained with TMRE and Fluo-3/AM, and both the change in membrane potential of mitochondria and that of [Ca^2+]i in the cells were observed using LCSM.RESULTS: Cells in treated groups showed typical signs of apoptosis. Staining with TMRE showed that solanine could lower membrane potential; staining with Fluo-3/AM showed that solanine could increase the concentration of Ca^2+ in tumor cells; and those of double staining with TMRE and Fluo-3/AM showed that solanine could increase the concentration of Ca^2+ in the cells at the same time as it lowered the membrane potential of mitochondria.CONCLUSION: Solanine opens up the PT channels in the membrane by lowering the membrane potential, leading to Ca^2+ being transported down its concentration gradient, which in turn leads to the rise of the concentration of Ca^2+ in the cell, turning on the mechanism for apoptosis. 展开更多
关键词 SOLANINE Hepatocarcinomatic cell Ca^2+ in the cell Membrane potential Laser confocal scanning microscopy
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Broader pattern of tandem repeats in the mitochondrial control region of Perciformes 被引量:2
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作者 崔朝霞 刘媛 朱嘉濠 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2010年第4期785-794,共10页
Perciformes,the largest order of vertebrates with 20 suborders,is the most diverse fish order that dominates vertebrate ocean life.The complete mitochondrial control region(CR) of Trichiurus japonicus(Trichiuridae,Sco... Perciformes,the largest order of vertebrates with 20 suborders,is the most diverse fish order that dominates vertebrate ocean life.The complete mitochondrial control region(CR) of Trichiurus japonicus(Trichiuridae,Scombroidei) and Pampus sp.(Stromateidae,Stromateoidei) were amplified and sequenced.Together with data from GenBank,the tandem repeats in the mitochondrial CR from 48 species,which covered nine suborders of Perciformes,are reported in this study.The tandem repeats tend to be long in the suborder Percoidei and Stromateoidei.The identical repeats in 21 species of Cichlidae suggest a common origin and have existed before species divergence.Larimichthys crocea shows tandem repeats instead of the typical structure of the central conserved sequence blocks,which was first reported in Perciformes and vertebrates.This might have resulted from interruption of the polymerase activity during the H-strand synthesis.The four broader patterns presented here for the tandem repeats,including those in both the 5' and 3' ends,only in the either 5' or 3' end,and in the central conserved domain of the control region,will be useful for understanding the evolution of species. 展开更多
关键词 MTDNA control region tandem repeats PERCIFORMES EVOLUTION
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Shape Similarity Measures of Linear Entities 被引量:1
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作者 ZhangQiaopin LIDeren 《Geo-Spatial Information Science》 2002年第2期62-67,共6页
The essential of feature matching technology lies in how to measure the similarity of spatial entities.Among all the possible similarity measures,the shape similarity measure is one of the most important measures beca... The essential of feature matching technology lies in how to measure the similarity of spatial entities.Among all the possible similarity measures,the shape similarity measure is one of the most important measures because it is easy to collect the necessary parameters and it is also well matched with the human intuition.In this paper a new shape similarity measure of linear entities based on the differences of direction change along each line is presented and its effectiveness is illustrated. 展开更多
关键词 feature matching similarity measures of spatial entities shape analysis differences of direction change
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关于表演心理技术的美学思考——斯坦尼斯拉夫斯基表现体系的启示(下) 被引量:4
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作者 杨易禾 《南京艺术学院学报(音乐与表演版)》 1996年第1期3-9,共7页
三、从内容到形式 在上一节中.我们讨论了从作品的形式进入作品内容的思维过程.接下来,我们要讨论的是:表演者从乐谱中“听”
关键词 斯坦尼斯拉夫斯基 心理技术 美学思考 表现体系 表演者 舞台语言 形体线 感情体验 演员 心理场
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A new record of Sebastes koreanus from China based on morphological characters and DNA barcoding 被引量:4
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作者 方亚璐 KAI Yoshiaki +2 位作者 YANAGIMOTO Takashi 宋娜 高天翔 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2015年第3期590-596,共7页
A new record of Sebastes koreanus (Kim and Lee, 1994) was documented based on morphological characters and DNA barcoding. Fifty-six Sebastes specimens were collected from the coastal waters of northern China. Sample... A new record of Sebastes koreanus (Kim and Lee, 1994) was documented based on morphological characters and DNA barcoding. Fifty-six Sebastes specimens were collected from the coastal waters of northern China. Samples were identified as S. koreanus based on morphological characters. The coloration and morphometric measurements were consistent with those described from specimens collected in South Korea. In this study, specimens had the following morphological characteristics: light brown body with dark stripes and tiny dark spots, 4-5 wide indistinct vertical patterns on the side, 2 radial stripes behind and below the eyes, 1 large dark blotch on the opercle. Additionally, the following meristie characters were recorded: dorsal fin XIV-13, pectoral fin 16, anal fin III-6-7, pelvic fin [-5, lateral line scales 29-30, and vertebrae 26. The fragment of cytochrome oxidase subunit I (CO1) gene of mitochondrial DNA was sequenced for phylogenetic analysis. The mean genetic distance within the species was 0.3%. Net genetic distances between S. koreanus and other Sebastes species ranged from 3.1% to 7.6%, which was greater than the threshold for species delimitation. The phylogenetic analysis strongly supports the validity of S. koreanus in China at the genetic level. The origion, evolution, patterns of speciation and unique features in genome divergence among primate lineages of this species still need future directions of research. 展开更多
关键词 Sebastes koreanus coastal waters of northern China new record morphological characters cytochrome oxidase subunit I (CO1)
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Study on Hydrodynamic Vibration in Dual Bluff Body Vortex Flowmeter
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作者 傅新 杨华勇 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2001年第2期123-128,共6页
The characteristics of the dual bluff body vortex shedding is investigated, and the possibility to use dual bluff body combinations to strengthen the hydrodynamic vibration around the bluff body objects is explored. T... The characteristics of the dual bluff body vortex shedding is investigated, and the possibility to use dual bluff body combinations to strengthen the hydrodynamic vibration around the bluff body objects is explored. The numerical and experimental approaches were utilized to examine the time dependent flow field and the pressure oscillation around the bluff bodies. The numerical data were obtained by the advanced large eddy simulation model. The experiment was conducted on a laboratory scale of Karman vortex flowmeter with 40 mm diameter. It is revealed that the optimized dual bluff body combinations strengthened the hydrodynamic vibration. It was also found that the hydrodynamic vibration with 180° phase difference occurred at the axisymmetric points of circular pipe on the lateral faces of the equilateral triangle-section bluff bodies. Using the dual bluff body configuration and the differential sensing technique, a novel prototype of vortex flowmeter with excellent noise immunity and improved sensibility was developed. 展开更多
关键词 FLOWMETER vortex shedding dual bluff body hydrodynamic vibration
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Thermal stability evaluation of nanostructured Al6061 alloy produced by cryorolling 被引量:2
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作者 M.ABBASI-BAHARANCHI F.KARIMZADEH M.H.ENAYATI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第4期754-762,共9页
Grain growth of nanostructured Al6061produced by cryorolling and aging process was investigated during isothermalheat treatment in100?500°C temperature range.Transmission electron microscopy(TEM)observations demo... Grain growth of nanostructured Al6061produced by cryorolling and aging process was investigated during isothermalheat treatment in100?500°C temperature range.Transmission electron microscopy(TEM)observations demonstrate that aftercryorolling and aging at130°C for30h,the microstructure contains61nm grains with dispersed50?150nm precipitates and0.248%lattice strain.In addition,an increase in tensile strength up to362MPa because of formation of fine strengtheningprecipitation and nano-sized grains was observed.Thermal stability investigation within100?500°C temperature range showedrelease of lattice strain,dissolution of precipitates and grain growth.According to the X-ray diffraction(XRD)analysis,Mg2Siprecipitates disappeared after annealing at temperatures higher than300°C.According to the results,due to the limited grain growthup to200°C,there would be little decrease in mechanical properties,but within300?500°C range,the grain growth,dissolution ofstrengthening precipitates and decrease in mechanical properties are remarkable.The activation energies for grain growth werecalculated to be203.3kJ/mol for annealing at100?200°C and166.34kJ/mol for annealing at300?500°C.The effect ofprecipitation dissolution on Al lattice parameter,displacement of Al6061(111)XRD peak and Portevin?LeChatelier(PLC)effect onstress?strain curves is also discussed. 展开更多
关键词 mechanical characterization X-ray diffraction aluminium alloy bulk deformation grain growth grain refinement
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Development of 3D crystallographic orientation measurement for grain deformation analysis in aluminum alloy 被引量:1
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作者 M.KOBAYASHI H.TODA +4 位作者 D.J.LECLERE T.KAMIKO K.UESUGI A.TAKEUCHI Y.SUZUKI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第7期2094-2101,共8页
Development of inhomogeneous deformation is an interest matter in material engineering. Synchrotron radiation tomography provides 3D distribution map of local strain in polycrystalline aluminum alloy by tracking micro... Development of inhomogeneous deformation is an interest matter in material engineering. Synchrotron radiation tomography provides 3D distribution map of local strain in polycrystalline aluminum alloy by tracking microstructural features. To perform further deep analysis on development of inhomogeneous deformation, crystallographic grain orientation is necessary. Three-dimensional X-ray diffraction technique was developed. A new crystallographic orientation measurement method was described in 3D space, utilizing grain boundary tracking (GBT) information. 展开更多
关键词 synchrotron radiation X-ray tomography X-ray diffraction plastic deformation crystallographic orientation
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Influence of chemical composition and cold deformation on aging precipitation behavior of high nitrogen austenitic stainless steels 被引量:1
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作者 李花兵 姜周华 +2 位作者 冯浩 朱红春 张祖瑞 《Journal of Central South University》 SCIE EI CAS 2013年第12期3354-3362,共9页
The influence of chemical composition and cold deformation on aging precipitation behavior of 18Cr-16Mn-2Mo-I.IN (HNS-A), 18Cr-16Mn-I.3N (HNS-B), 18Cr-18Mn-2Mo-0.96N (HNS-C) and 18Cr-18Mn-2Mo-0.77N (I-INS-D) h... The influence of chemical composition and cold deformation on aging precipitation behavior of 18Cr-16Mn-2Mo-I.IN (HNS-A), 18Cr-16Mn-I.3N (HNS-B), 18Cr-18Mn-2Mo-0.96N (HNS-C) and 18Cr-18Mn-2Mo-0.77N (I-INS-D) high nitrogen austenitic stainless steels was investigated. The results show that the "nose" temperatures and incubation periods of the initial time-temperature-precipitation (TTP) curves of aged HNSs are found to be 850 ℃, 60 s; 850 ℃, 45 s; 850 ℃, 60 s and 900 ℃, 90 s, respectively. Based on the analysis of SAD patterns, the coarse cellular Cr2N precipitate which presents a lamellar structure has a hexagonal structure of a=0.478 nm and c=0.444 nm. The Z phase corresponding to a composition of Fe36Cr^2Mo10, is determined to be a body-centered cubic structure ofa=0.892 nm. The precipitating sensitivity presents no more difference with the nitrogen content increasing from 0.77% to 0.96%, but exhibits so obviously that the cellular precipitates nearly overspread the whole field. The addition of Mo element can restrain the TTP curves moving left and down, which means decreasing the sensitivity of aging precipitation. With increasing the cold deformation, the sensitivity of precipitation increases obviously. 展开更多
关键词 high nitrogen austenitic stainless steel aging precipitation time-temperature-precipitation curve chemical composition cold deformation
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A Modified Logvinovich Model For Hydrodynamic Loads on an Asymmetric Wedge Entering Water with a Roll Motion 被引量:2
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作者 秦洪德 赵林岳 申静 《Journal of Marine Science and Application》 2011年第2期184-189,共6页
The water entry problem of an asymmetric wedge with roll motion was analyzed by the method of a modified Logvinovich model (MLM). The MLM is a kind of analytical model based on the Wagner method, which linearizes the ... The water entry problem of an asymmetric wedge with roll motion was analyzed by the method of a modified Logvinovich model (MLM). The MLM is a kind of analytical model based on the Wagner method, which linearizes the free surface condition and body boundary condition. The difference is that the MLM applies a nonlinear Bernoulli equation to obtain pressure distribution, which has been proven to be helpful to enhance the accuracy of hydrodynamic loads. The Wagner condition in this paper was generalized to solve the problem of the water entry of a wedge body with rotational velocity. The comparison of wet width between the MLM and a fully nonlinear numerical approach was given, and they agree well with each other. The effect of angular velocity on the hydrodynamic loads of a wedge body was investigated. 展开更多
关键词 water entry roll motion modified Logvinovich model(MLM) asymmetric wedge
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靓与量
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《上海戏剧》 1999年第1期42-43,共2页
现代生活中“靓”是公众女性不可忽视的形象要求,它是生活品质的表述及人们对形象美追求的必然。靓,因人而异,在扮靓与自然形象条件之间;权衡得失在于对形象包装定位“量”的把握,这里的“量”指装扮的尺度与分寸,贴切自身条件的不温不... 现代生活中“靓”是公众女性不可忽视的形象要求,它是生活品质的表述及人们对形象美追求的必然。靓,因人而异,在扮靓与自然形象条件之间;权衡得失在于对形象包装定位“量”的把握,这里的“量”指装扮的尺度与分寸,贴切自身条件的不温不火、不媚不俗方显得体。 谷永立,上视体育节目主持,作为女主持体育类节目。 展开更多
关键词 形体线 美容护理 上海大剧院 形象包装 权衡得失 自然形象 生活品质 体育类 节目主持 视体
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Study of a middle-wavelength infrared athermalized optical system
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作者 GAO Hong-yun XIONG Tao LI Sheng-hu 《Optoelectronics Letters》 EI 2008年第5期351-353,共3页
For cooled 320 × 240 detector with staring focal plane array, a novel middle infrared athermal optical system is presented. The system is composed of 5 spherical lenses. The materials of lenses are silicon and ge... For cooled 320 × 240 detector with staring focal plane array, a novel middle infrared athermal optical system is presented. The system is composed of 5 spherical lenses. The materials of lenses are silicon and germanium. The optical parameters and modulation transfer function (MTF) are investigated. The system has the diffraction limited image quality and stable image plane from -30 ℃ to 70 ℃. The characteristic parameters of the system are as follows:flnumber of 4, cold shield efficiency of 100%, spectrum region of 3.7-4.8 μm and transmissivity of 80%. The system has the merits of simple structure, low price, and it is easy to machining. 展开更多
关键词 中波长 红外线 光学系统 球形晶状体
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