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Chemical Research in Chinese Universities 2009年第6期25卷 945-949页

作者： DING Ke-jian ZHENG Yan-peng guan Wei-jun MA yue-hui College of Life Sciences and Bioengineering School of Science Beijing Jiaotong University Beijing 100044 P. R. China Institute of Animal Sciences Chinese Academy of Agricultural Sciences Beijing 100193 P. R. China

We theoretically investigated negative entropy S of biopolymer which passes through a nanometer pore（such as a-hemolysin）, especially entering process and escaping process, on the basis of which we also studied biopolymer entering-pore time rent, biopolymer entering mean velocity Vent, biopolymer escaping-pore time resc, and biopolymer escaping mean velocity vesc, respectively. Our results illustrate that the entering and escaping processes of biopolymer depend on its negative entropy, and entering process is more difficult than escaping process for biopolymer translocation. This tremendous difference between the two processes will offer a useful engineering hint for single macromolecule identification.

关键词： Biopolymer Nanometer pore Negative entropy Entering Escaping

The numerical simulation of caesium-137 transportation in oceanand the assessment of its radioactive impacts after Fukushima NPP release

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Science China Earth Sciences 2015年第6期58卷 996-1004页

作者： guan yue SHEN ShiFei HUANG Hong Institute of Public Safety Research Department of Engineering Physics Tsinghua University

After the damage of Fukushima Daiichi Nuclear Power Plant, a great number of radioactive materials were released into the Pacific Ocean. Therefore, it is necessary to research on the temporal and spatial distribution of these radionuclides. We use Princeton Ocean Model to simulate the circulation of the coast water of Fukushima NPP and obtain the concentration of caesium-137 by solving the diffusion equations. We employ the Monte Carlo N-particle(MCNP) code to assess the external doses caused by these contaminated sea water. To improve the efficiency and effectiveness of volume source in MCNP code, we establish a transformation method between spot source and volume source, and determine an appropriate range of volume source. Finally, we calculate the absorbed doses of every organ/tissue and the effective dose of a human body.

关键词： numerical simulation POM caesium-137 MCNP absorbed dose effective dose

酸法和酶法提取对中华草龟皮胶原蛋白结构和理化特性的影响

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食品工业科技 2025年第1期46卷 79-86页

作者：虞丹丹魏文志关利陈文卓曹晖扬州大学旅游烹饪学院江苏扬州225127 扬州大学中餐非遗技艺传承文化和旅游部重点实验室江苏扬州225127 扬州大学动物科学与技术学院江苏扬州225001

本研究以中华草龟皮胶原蛋白为研究对象,探究不同提取方法对其结构和理化特性的影响。分别采用酸法和酶法对中华草龟皮胶原蛋白进行提取,并运用十二烷基硫酸钠-聚丙烯酰胺凝胶电泳、高效液相色谱法、圆二色光谱法、差式扫描量热、扫描... 详细信息

本研究以中华草龟皮胶原蛋白为研究对象,探究不同提取方法对其结构和理化特性的影响。分别采用酸法和酶法对中华草龟皮胶原蛋白进行提取,并运用十二烷基硫酸钠-聚丙烯酰胺凝胶电泳、高效液相色谱法、圆二色光谱法、差式扫描量热、扫描电镜、溶解性、感官评价及色度等分析酸溶性胶原蛋白(ASC)和酶溶性胶原蛋白(PSC)的组成、结构以及理化特性。结果表明,ASC和PSC的提取率分别为24.50%±0.44%和51.68%±0.06%,酶法提取胶原蛋白的提取率显著高于酸法(P<0.05)。ASC和PSC主要由α1和α2链组成,均为I型胶原蛋白。ASC和PSC中甘氨酸的含量最多,分别是370.17和387.75个残基/1000个氨基酸残基。圆二色光谱表明这两种胶原蛋白二级结构相似,均具有胶原蛋白的特征峰。ASC和PSC的变性温度分别为27.21±0.28℃和28.37±0.23℃。扫描电镜结果表明,ASC具有无序的纤维结构,而PSC的微观结构更为规则。ASC的溶解度整体略低于PSC,PSC的感官品质和色度优于ASC。

关键词：中华草龟皮胶原蛋白酸法提取酶法提取结构理化特性

Rare earth element-doped porous In_(2)O_(3) nanosheets for enhanced gas-sensing performance

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Rare Metals 2021年第6期40卷 1662-1668页

作者： Wen-hui Zhang Su-Jun Ding Qing-Song Zhang hui Yi Zi-Xiang Liu Meng-Li Shi Kong-Feng guan Lu yue Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China

Rare earth(La,Pr,Sm,Ce and Yb)-doped porous In_(2)O_(3) nanosheets are prepared by a solvothermal *** effect of rare earth elements on the structure,morphologies and gas-sensing performance of In_(2)O_(3) nanosheets is systematically *** mixed phase composed of c-In_(2)O_(3) and rh-In_(2)O_(3) can be transformed into rh-In_(2)O_(3) by doping with rare earth *** doping with rare earth elements,the morphology can be changed from compact nanosheets to porous *** with pure In_(2)O_(3) and La,Pr,Sm,Ce-doped porous In_(2)O_(3) nanosheets,Yb-doped In_(2)O_(3) nanosheets present the best gas-sensing *** 3%-10%Yb-doped samples,6%Yb-doped In_(2)O_(3) porous nanosheets exhibit the optimal gas-sensing performance to 5×10^(-6)-750×10^(-6) acetone,giving a high response of 15.3 toward 50×10^(-6) acetone and fast response/recovery time at the operating temperature of 220℃.Moreover,6% Yb-doped porous In_(2)O_(3) nanosheet sensor also exhibits excellent selectivity and stability,indicating its potential in the nextgeneration gas sensor.

关键词： In_(2)O_(3) Doping Rare earth elements Gas sensor Acetone

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股权回购型对赌协议的基本原理与效力认定

江苏商论 2025年第1期 107-111页

作者：张跃辉中国银行股份有限公司菏泽分行山东菏泽274002

以股权回购为常见形式的对赌协议,是一种具有商业惯例因素并符合企业经营内在逻辑的投资工具,属于狭义的非典型合同,背后的学理基础在于诚实信用原则。中国关于股权回购型对赌协议的规范性文件通常认可其法律效力,其中包括但不限于纪要... 详细信息

以股权回购为常见形式的对赌协议,是一种具有商业惯例因素并符合企业经营内在逻辑的投资工具,属于狭义的非典型合同,背后的学理基础在于诚实信用原则。中国关于股权回购型对赌协议的规范性文件通常认可其法律效力,其中包括但不限于纪要对司法审判的影响。既往司法实践对于协议的效力认定经历了两个阶段的发展:第一阶段在于认定协议的合法性,“华工案”的裁判思路反映出对双方当事人交易的自主意愿的尊重。第二阶段是协议的可执行性问题,一方面需要结合资本维持和清偿能力标准判断协议的可履行性;另一方面在具体的履行程序上,协议双方当事人也要事先做好周密安排。

关键词：对赌协议股权回购投资效力可履行性

Detection of CO Outflow in Rotating Cores

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Chinese Journal of Astronomy and Astrophysics 2008年第2期8卷 230-236页

作者： Xin guan yue-Fang Wu Department of Astronomy Peking University Beijing 100871

We investigate the effect of bulk motion on the detection of molecular outflows in the sources S146, GGD27, and IRAS 22566＋5830. The traditional techniques do allow for bulk motions or systematic VLSR shifts of the core emissions, which may cause contamination of the high velocity gas emissions, and outflows may either fail to be detected or have their properties miscalculated. We used a program to follow the systematic shift of VLSR and better results have been obtained.

关键词： ISM: jets and outflows -- ISM: kinematics and dynamics -- ISM: molecules-- stars: formation

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基于改进DGCNN的树木点云分割方法

南京农业大学学报 2025年第1期48卷 240-248页

作者：刘超卜鑫荣刘慧杨官学沈跃徐婕江苏大学电气信息工程学院江苏镇江212000

[目的]通过目标分割为果园喷雾机提供树木的表征信息,使喷雾机能够实现精准喷雾。在分割过程中,对苗圃中的树冠、树干等不同部位进行分割,可以帮助喷雾机对喷雾部分对靶,在果园或苗圃景观中实现自动导航以及精准喷药等操作。与图片相比... 详细信息

[目的]通过目标分割为果园喷雾机提供树木的表征信息,使喷雾机能够实现精准喷雾。在分割过程中,对苗圃中的树冠、树干等不同部位进行分割,可以帮助喷雾机对喷雾部分对靶,在果园或苗圃景观中实现自动导航以及精准喷药等操作。与图片相比,点云能够更好地表征树木的三维结构并且受照明条件影响小,因此针对点云树木设计分割算法更适合应用在果园、苗圃等室外环境作业的农业机械。[方法]本文基于DGCNN提出了一种分割精度准确、参数量小的树木点云分割网络——TSNet,它可以很容易被部署在果园喷雾机上。该网络主要具有以下特点:1)该网络是基于DGCNN改进的,可以更好实现点云分割任务;2)网络引入了连续递归门控卷积模块(gnConv),可以提高树木分割的准确率;3)为避免全局信息损失并增加信息传递效率,我们设计了权重通道用于特征传递。[结果]TSNet分割树木的mIoU达到90.08%,模型大小为0.72 M,优于PointNet、PointNet++、DGCNN、CurveNet、PointMLP和D-PointNet++等常用的点云分割算法。[结论]TSNet能够为苗圃树木检测识别和农业机器人作业提供更准确的感知信息。

关键词：点云树木分割深度学习精准喷雾果园喷雾机

基于改进DeblurGAN-v2的运动模糊农作物害虫图像复原方法

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光电子·激光 2025年第1期36卷 46-52页

作者：赵辉黄镖王红君岳有军天津理工大学电气工程与自动化学院天津市复杂系统控制理论与应用重点实验室

为对巡检机器人在巡检过程中产生的运动模糊图像进行高效精准识别，提出了一种基于改进DeblurGAN-v2的运动模糊农作物害虫图像复原方法。为有效提取图像重要特征，该方法将通道注意力(channel attention, CA)机制集成到DeblurGAN-v2主... 详细信息

为对巡检机器人在巡检过程中产生的运动模糊图像进行高效精准识别，提出了一种基于改进DeblurGAN-v2的运动模糊农作物害虫图像复原方法。为有效提取图像重要特征，该方法将通道注意力(channel attention, CA)机制集成到DeblurGAN-v2主干网格中，使模型更加关注细节特征，提高对运动模糊图像的复原能力；此外，在原模型特征提取网络顶层引入空间金字塔池化(spatial pryamid pooling, SPP)缓解图像多尺度变化造成对图像复原的负面影响，提高模型对图像复原的性能。基于实际农田环境建立的数据集所做的实验结果表明，改进后算法的PSNR、SSIM指标分别为26.281 8 dB、0.947 3,较原模型提升了8、7.2个百分点。与其他主流模型的对比实验结果表明，本文方法对模糊图像的实际复原效果更优，对解决运动模糊农作物害虫的图像复原问题具有实际应用价值。

关键词：运动模糊深度学习图像复原 DeblurGAN-v2 通道注意力(CA)机制空间金字塔池化(SPP)模块

A Super-robust Armoured Superhydrophobic Surface with Excellent Anti-icing Ability

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Journal of Bionic Engineering 2023年第5期20卷 1891-1904页

作者： Peng Wang hui Zhao Boyuan Zheng Ximei guan Bin Sun Yongli Liao Ying yue Wei Duan Haimin Ding School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBaoding071000China Hebei Key Laboratory of Electric Machinery Health Maintenance and Failure Prevention North China Electric Power UniversityBaoding071003China Key Laboratory of Icing and Anti/De-Icing China Aerodynamics Research and Development CenterMianyang621000SichuanChina Electric Power Research Institute China South Power GridGuangzhouChina

It has been proved that the construction of interconnected armour on superhydrophobic surface could significantly enhance the mechanical ***,a new kind of armour with frame/protrusion hybrid structure was achieved by nanosecond laser ***,this armoured superhydrophobic surface demonstrated excellent durability,which could withstand linear abrasion(~3 N press)800 cycles,water jet test(1.0 MPa pressure)40 times and 100℃treatment 18 ***,the armoured superhydrophobic sample shows outstanding anti-icing ability,which can speed up the supercooled water dropping(no adhesion within 2 h),increase the freezing delay time by~3 times and maintain low adhesion force(less than 35 kPa)after 30 icing/de-icing *** finite element analysis and theoretical modeling proved that the developed frame/protuberance hybrid structure could effectively enhance the *** relatively low surface accuracy in this study can significantly reduce processing cost,which provides a bright future for the practical application of armour superhydrophobic materials.

关键词： Bionic coating Superhydrophobic Robust Armour Anti-icing