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Fast Algorithm for Nonsubsampled Contourlet Transform

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自动化学报 2014年第4期40卷 757-762页

作者： Chun-man YAN[a]Author Vitae bao-Long GUO[b]Author Vitae Meng YI[b]Author Vitae [a]College of Physics and Electronic Engineering Northwest Normal University Lanzhou 730070 China[b]Institute of Intelligent Control and Image Engineering Xidian University Xi' an 710071 China

多尺度的几何分析(MGA ) 为图象处理作为有效策略被认出了。作为 MGA 的分离工具之一， nonsubsampled contourlet 变换(NSCT ) 广泛地被使用了图象降噪，图象熔化，图象改进，特征抽取等等。然而，处理表演由于它的高冗余性被限制，并... 详细信息

多尺度的几何分析(MGA ) 为图象处理作为有效策略被认出了。作为 MGA 的分离工具之一， nonsubsampled contourlet 变换(NSCT ) 广泛地被使用了图象降噪，图象熔化，图象改进，特征抽取等等。然而，处理表演由于它的高冗余性被限制，并且导致集中的计算效率。因此，它的快算法在实践被需要。在这份报纸，我们采用一个优化方向性的过滤器银行(DFB ) 并且把它嵌进 NSCT 当使重建的表演的损失细微时，显著地加速计算速度。试验性的结果证明重建的图象质量能满足人的视觉系统。而且，改进 NSCT 有速度关于若干次比传统的的。图象降噪上的试验性的结果也验证建议方法的可行性和效率。

关键词： Contourlet变换快速算法抽样多尺度几何分析图像处理图像去噪运算速度图像融合

Effects of di-n-butyl phthalate on male rat reproduction following pubertal exposure

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Asian Journal of Andrology 2011年第5期13卷 702-709页

作者： Ai-Mei bao Xiao-Ming man Xue-Jiang Guo Hui-Bin Dong Fu-Qiang Wang Hong Sun Yu-Bang Wang Zuo-Min Zhou Jia-Hao Sha State key Laboratory of Reproductive Medicine Nanjing Medical University Nanjing 210029 China Key Laboratory of Reproductive Medicine Institute of Toxicology Nanjing Medical University Nanjing 210029 China Jiangsu Provincial Center for Disease Control and Prevention Nanjing 210009 China

Di-n-butyl phthalate （DBP） is an endocrine-disrupting chemical that has the potential to affect male reproduction. However, the reproductive effects of low-dose DBP are still not well known, especially at the molecular level. In the present study, pubertal male Sprague-Dawley rats were orally administered DBP at a wide range of doses （0.1, 1.0, 10, 100 and 500 mg kg^-1 day^-1） for 30 days. The selected end points included reproductive organ weights, testicular histopathology and serum hormonal levels. Additionally, proteomic analysis was performed to identify proteins that are differentially expressed as a result of exposure to DBP at low doses （0.1, 1.0 and 10 mg kg^-1 day^-1）. Toxic effects were observed in the high-dose groups, including anomalous development of testes and epididymides, severe atrophy of seminiferous tubules, loss of spermatogenesis and abnormal levels of serum hormones. Treatment with low doses of DBP seemed to exert a ＇stimulative effect＇ on the serum hormones. Proteomics analysis of rat testes showed 20 differentially expressed proteins. Among these proteins, alterations in the expression of HnRNPA2/B1, vimentin and superoxide dismutase 1 （SOD1） were further confirmed by Western blot and immunohistochemistry. Taken together, we conclude that high doses of DBP led to testicular toxicity, and low doses of DBP led to changes in the expression of proteins involved in spermatogenesis as well as changes in the number and function of Sertoli and Leydig cells, although no obvious morphological changes appeared. The identification of these differentially expressed proteins provides important information about the mechanisms underlying the effects of DBP on male rat reproduction.

关键词： di-n-butyl phthalate hormones proteomics spermatogenesis testis

Numerical simulation of motion and deformation of ring bubble along body surface

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Applied Mathematics and Mechanics(English Edition) 2013年第12期34卷 1495-1512页

作者：倪宝玉张阿漫 G.X.WU College of Shipbuilding Engineering Harbin Engineering University Department of Mechanical Engineering University College London

Numerical simulation for fluid flow over an attached rigid body with a deformable ring bubble is analyzed based on the velocity potential theory together with the boundary element method （BEM）. The analysis is focused on the axisymmetric case. The bubble surface is treated as a well defined air-liquid interface and is tracked by a mixed Eulerian-Lagrangian method. The points of intersection between the bubble and body are treated, specially in the numerical procedure. The auxiliary function method is adopted to calculate the pressure on the body surface and in the flow field. The convergence study is undertaken to assess the developed numerical method and the computation code. Some case studies are undertaken in which the interactions between the bubble/body and the incoming flow field are simulated. The effects of various physical parameters on the interactions are investigated.

关键词： bubble dynamics moving boundary axisymmetric flow boundary elementmethod

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基于矢量空间最小励磁电流的电机节能研究

中国电机工程学报 2006年第1期26卷 142-145页

作者：丁宝孙满意哈尔滨工业大学电气工程及自动化学院黑龙江省哈尔滨市150001

文中提出一种基于矢量空间的最小励磁电流的变频调速系统节能控制方案;对异步电动机矢量控制系统取得定子电流最小值的原理进行了证明;针对异步电机轻载运行进行基于矢量空间的最小励磁电流法仿真实验。理论分析与仿真实验表明,该节能... 详细信息

文中提出一种基于矢量空间的最小励磁电流的变频调速系统节能控制方案;对异步电动机矢量控制系统取得定子电流最小值的原理进行了证明;针对异步电机轻载运行进行基于矢量空间的最小励磁电流法仿真实验。理论分析与仿真实验表明,该节能控制方案不增加系统硬件成本,根据电动机的负载状态对励磁电流进行调节,使定子电流达到最小值,从而达到节能的目的。当负载率为14%时,节能率可达9%。实验结果表明本文控制方案不仅能使中小功率异步电动机轻载运行时节能,还使其电磁转矩振荡减小。

关键词：矢量空间励磁电流异步电机节能控制轻载运行

Sixty-four-slice computed tomography in surgical strategy of portal vein cavernous transformation

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World Journal of Gastroenterology 2011年第38期17卷 4334-4338页

作者： Ming-man Zhang Cong-Lun Pu Ying-Cun Li Chun-bao Guo Department of Hepatobiliary Surgery Children＇s hospitalChongqing Medical University Chongqing 400014 China

AIM:To investigate the role of 64-slice computed tomography(CT) in portal vein cavernous transformation to determine surgical ***:The site of lesions and extent of collateral circulation in 12 pediatric cases of cavernous transformation of the portal vein with surgical treatment were ***:Eleven of 12 children had esophageal varices and were treated with lower esophageal and gastric devascularization and splenectomy,and the other case was only treated with *** were eight cases with spontaneous spleen/stomach-renal shunt,four with Retzius vein opening,which was reserved during *** cases of lesions involving the intrahepatic portal vein(PV) were treated with living donor liver *** patient died from PV thrombosis after liver transplantation,and the rest had no significant ***:The PV,its branches and collateral circulation were clearly seen by 64-slice spiral CT angiography,which helped with preoperative surgical planning.

关键词： Cavernous transformation Portal vein Co4-slicecomputed tomography Liver transplantation Portal hyper-tension Esophageal devascularization Gastric devascularization

Cycloartane Glycosides from the Roots of Cimicifuga foetida with Wnt Signaling Pathway Inhibitory Activity

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Natural Products and Bioprospecting 2015年第2期5卷 61-67页

作者： Di-Fan Zhu Guo-Lei Zhu Ling-Mei Kong Ni-man bao Lin Zhou Yin Nian Ming-Hua Qiu State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China

Four new 9,19-cycloartane triterpenoids,cimilactone E(1),cimilactone F(2),20-O-(E)-butenoyl-23-epi-26-deoxyactein(3),and 20,12b-O-diacetylcimiracemonol-3-O-b-D-xylopyranoside(4),together with four known constituents(5–8)were isolated from the roots of Cimicifuga *** new structures were elucidated by extensive spectroscopic *** addition,compounds 7 and 8 showed significant Wnt signaling pathway inhibitory activity,with IC50 values of 3.33 and 13.34 lM,respectively,using the luciferase reporter gene assay.

关键词： Cimicifuga foetida 9,19-Cycloartane triterpenoids Cimilactone-type Wnt signal pathway Luciferase activity

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气泡在自由液面破碎后的射流断裂现象研究

物理学报 2013年第12期62卷 345-355页

作者：倪宝玉李帅张阿漫哈尔滨工程大学船舶工程学院哈尔滨150001

在势流假设下,考虑表面张力以及黏性修正,建立自由液面在气泡破碎后全非线性运动的数值模型,给出射流断裂和水滴撕裂的数值处理方法.同时进行上浮气泡在自由液面破裂的实验研究,数值解与实验值符合良好.为了研究自由液面在气泡破碎后的... 详细信息

在势流假设下,考虑表面张力以及黏性修正,建立自由液面在气泡破碎后全非线性运动的数值模型,给出射流断裂和水滴撕裂的数值处理方法.同时进行上浮气泡在自由液面破裂的实验研究,数值解与实验值符合良好.为了研究自由液面在气泡破碎后的运动学机理和规律,运用开发的程序研究了不同尺寸气泡破碎后的动态特性,包括从气泡底部顶起的射流、射流断裂以及水滴分裂等复杂的物理现象,总结了从射流上撕裂出的第一个水滴尺寸、撕裂时间以及最大射流速度的变化规律.最后讨论了雷诺数与韦伯数对气泡破碎后自由液面运动的影响.

关键词：气泡自由液面破碎断裂

Measurements of Laser Absorption and Ion Energy in Femtosecond Laser-Cluster Interaction

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Chinese Physics Letters 2001年第2期18卷 211-213页

作者： LIN Jing-Quan ZHANG Jie LI Ying-Jun CHEN Li-Ming LÜTie-Zheng TENG Hao man bao-Yuan ZHAO Li-Zeng Laboratory of Optical Physics Institute of PhysicsChinese Academy of SciencesBeijing 100080

Laser absorption is measured in Xe,Ar and He clusters irradiated by 5 mJ laser pulses in 150 *** measurements show that the absorption efficiency strongly depends on the backing pressure of the gas jets,the laser pulse duration and the atomic number Z of the working *** laser absorption for Xe clusters is found to be as high as 45%at a backing pressure of 20 atm and a laser intensity of 1×10^(15) W/cm^(2).Significant numbers of ions with energies up to 100 keV are detected from Xe cluster *** variation trend of the average ion energy at different backing pressures is consistent with that of the laser energy absorption.

关键词： laser Femto Laser

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创意设计提升期刊品牌影响力

中国期刊年鉴 2014年第1期13卷 327-329页

作者：满都拉新华社环球杂志

在众多媒体类型中,期刊是历史长久、根基深厚的平面印刷媒体,也是目前平面印刷媒体中更为适应手持平板、电子阅读器等流行电子设备的阅读形态。创意设计是利用人的审美心理与思考联想能力,以直观地视觉形式传递信息内容,通过文字、数据... 详细信息

在众多媒体类型中,期刊是历史长久、根基深厚的平面印刷媒体,也是目前平面印刷媒体中更为适应手持平板、电子阅读器等流行电子设备的阅读形态。创意设计是利用人的审美心理与思考联想能力,以直观地视觉形式传递信息内容,通过文字、数据、图片等元素有效组织表达内容,以色彩强化刊物的定位与属性,选择纸张、装订及印刷发式等塑造刊物的外形,让阅读更流畅,印象更深刻。在现在这个传播渠道多元、速度迅速、内容发达的媒体环境下,直接针对读者眼睛所见、影响读者心理所感的创意设计,对期刊品牌的重要性既来自于期刊本质的需要,也推动期刊快速建立并长久维持品牌形象。

关键词：品牌影响力创意设计期刊电子阅读器印刷媒体审美心理电子设备联想能力