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Matter and Radiation at Extremes 2023年第3期8卷 27-33页

作者： Yi Guo Xiaomei Zhang Dirui Xu Xinju Guo Baifei Shen Ke lan Department of Physics Shanghai Normal UniversityShanghai 200234China Institute of Applied Physics and Computational Mathematics Beijing 100094China

Laser–plasma instability(LPI)is one of the main obstacles to achieving predictable and reproducible fusion at high gain through laser-driven inertial confinement fusion(ICF).In this paper,for the first time,we show analytically and confirm with three-dimensional particle-incell simulations that angular incoherence provides suppression of the instability growth rate that is additional to and much stronger than that provided by the well-known temporal and spatial incoherence usually used in ICF *** the model used in our calculations,the maximum field ratio between the stimulated Raman scattering and the driving pulses drops from 0.2 for a Laguerre–Gaussian pulse with a single nonzero topological charge to 0.05 for a super light spring with an angular momentum spread and random relative *** particular,angular incoherence does not introduce extra undesirable hot *** provides a novel method for suppressing LPI by using light with an angular momentum spread and paves the way towards a low-LPI laser system for inertial fusion energy with a super light spring of incoherence in all dimensions of time,space,and angle,and may open the door to the use of longer-wavelength lasers for inertial fusion energy.

关键词： scattering dimensions angular

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割前脱粒中收割禾秆的研究与试验

农业机械学报 1999年第2期30卷 60-64页

作者：蓝文锋福建省机械科学研究院

现有国内外有关割前脱粒收获工艺研究中，对已经被梳脱净的禾秆如何妥善处理，逐渐成为当前重要的攻关方向。本文列举了几种处理禾秆的方案，研究设计出了一种新型输送切割装置；分析在接触输送切割装置时，禾秆被拨动—切割—输送—铺... 详细信息

现有国内外有关割前脱粒收获工艺研究中，对已经被梳脱净的禾秆如何妥善处理，逐渐成为当前重要的攻关方向。本文列举了几种处理禾秆的方案，研究设计出了一种新型输送切割装置；分析在接触输送切割装置时，禾秆被拨动—切割—输送—铺放的工作原理；给出机构较合适的结构参数和运动参数。

关键词：收获联合收获机脱粒割前脱粒禾秆

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受生物群体智能启发的多机器人系统研究

机器人 2007年第3期29卷 298-304页

作者：蓝艇刘士荣华东理工大学自动化研究所杭州电子科技大学自动化研究所浙江杭州310018

首先,介绍了生物社会中的群体智能.接着,讨论了群体机器人技术中的群体控制、群体通信和群体形态等主要研究内容及其发展趋势,并介绍了群体机器人系统的几个典型任务环境.最后,通过一个物体搜集任务的仿真实例来说明群体智能设计原则在... 详细信息

首先,介绍了生物社会中的群体智能.接着,讨论了群体机器人技术中的群体控制、群体通信和群体形态等主要研究内容及其发展趋势,并介绍了群体机器人系统的几个典型任务环境.最后,通过一个物体搜集任务的仿真实例来说明群体智能设计原则在多机器人系统中的应用.

关键词：群体智能生物启发群体机器人群体控制

A Parallel Algorithm for Corner Detection on Object Contour

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Journal of Systems Engineering and Electronics 1992年第1期3卷 56-63页

作者： lan YongchuanBeijing Institute of Remote Sensing Equipment,Beijing P.O.Box 3925 Beijing Institute of Remote Sensing Equipment Beijing P.O. Box 3925

A new parallel algorithm for corner detection on object contour is presented in the paper. In this algorithm whenever a point (pixel) is scanned, the k direction codes between the two sides of the point, which is on the edge of an object, are obtained by k-step forward and backward boundary tracking. A comer is determined by the sum of the difference between the two weighted code chains. Note that the whole chain code sequence or boundary of an object is not necessary to be extracted at all in this algorithm, and the corners are obtained immediately once the image is scanned, furthermore, what humans perceive as corners can be detected and localized by this algorithm.

关键词： Corner detection Boundary tracking Degree of sharpness

Isolation and Structural Analysis of the Seed-Specific Promoter from Soybean

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Agricultural Sciences in China 2005年第6期4卷 401-407页

作者： CAIYINQing-ge-le LIMing-chun CAIYi ZHAOGui-lan ZHAOYue-ju XINCLai-jun DepartmentofMicrobiology NankaiUniversityTianjin300071P.R.China ProvincialKeyOpenLaboratoryonAgro-Biotechnology JilinAcademyofAgricultureSciencesGongzhuling136100P.R.China

The promoter region (BCSP666) of b-conglycinin a-subunit gene from the genomic DNA of soybean Jilin 43 was isolatedby PCR method. Sequencing analysis showed that the cloned fragment BCSP666 had the similar structure to the soybeanseed-specific promoter b-conglycinin a'-subunit gene promoter and b-conglycinin b-subunit gene promoter, and it alsocontains many motifs that contribute to the seed-specific promoter activity. Based on this sequencing analysis, wededuced that promoter fragment BCSP666 had the seed-sepecific promoter activity. And then we constructed the seed-specific expression vector pBMI666 with the promoter fragment BCSP666 and D6-fatty acid desaturase gene fromMortierella isabellina. The D6-fatty acid desaturase is the rate-limiting enzyme of the desaturation of linoleic acid in theproduction of a human essential fatty acid, g-linolenic acid(GLA). The production of g-linolenic acid(GLA) was observedin soybean callus cells, which were transformed with this vector. This confirmed the activity of the activity fragmentBCSP666.

关键词： Seed-specific promoter Motif γ-linolenic acid

先天性心脏病患者从青少年到成人过渡期护理的研究进展

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中国护理管理 2024年第4期24卷 626-630页

作者：兰岚张婷唐山市工人医院神经外科河北省唐山市063003 湖州师范学院医学院

先天性心脏病患者从青少年过渡到成人的过渡期是其实现疾病自主管理的重要阶段,为青少年先天性心脏病患者提供全面、完善的过渡期护理可以确保护理的连续性,提高青少年先天性心脏病患者的自我管理能力并改善其心脏功能状态。文章对青少... 详细信息

先天性心脏病患者从青少年过渡到成人的过渡期是其实现疾病自主管理的重要阶段,为青少年先天性心脏病患者提供全面、完善的过渡期护理可以确保护理的连续性,提高青少年先天性心脏病患者的自我管理能力并改善其心脏功能状态。文章对青少年先天性心脏病患者的过渡期护理现状、护理需求、护理方案等方面的研究进行综述,并提出相关建议,为国内开展先天性心脏病患者的过渡期护理实践提供借鉴。

关键词：先天性心脏病青少年过渡期护理综述

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一些声表面波器件的市场应用及发展

压电与声光 2006年第5期28卷 502-505页

作者：白涛兰敏四川压电与声光技术研究所重庆400060

简明阐述了声表面波(SAW)器件的一些应用和新发展,并例举了表贴SAW射频、中频滤波器在北美CDMA/PCS双模制式终端内的典型应用,分别对比了国内外供应商推向CDMA系统的SAW 69.99 MHz和114.99 MHz中频滤波器及终端Rx用881.5 MHz SAW射频表... 详细信息

简明阐述了声表面波(SAW)器件的一些应用和新发展,并例举了表贴SAW射频、中频滤波器在北美CDMA/PCS双模制式终端内的典型应用,分别对比了国内外供应商推向CDMA系统的SAW 69.99 MHz和114.99 MHz中频滤波器及终端Rx用881.5 MHz SAW射频表贴滤波器的性能指标,并提出了一些意见和看法。

关键词：声表面波应用新发展性能指标

The sex ratio of wild Chinese alligators Alligator sinensis

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Current Zoology 2013年第6期59卷 725-731页

作者： lan ZHAO Hai-Qiong YANG Li-Ming FANG Guo-Liang PAN Wei-Qiang ZOU Da-Bin REN Qiu-Hong WAN Sheng-Guo FANG The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education State Conservation Center for Gene Resources of Endangered Wildlife College of Life Sciences Zhejiang University Hangzhou 310058 China Changxing Yinjiabian Chinese Alligator Nature Reserve Changxing 313100 Zhejiang China

The Chinese alligator Alligator sinensis is one of the most endangered crocodilian species, and typically exhibits temperature-dependent sex determination. It is extremely important to clarify the sex structure of Chinese alligators to implement recovery projects successfully. However, the sex ratio of wild Chinese alligators remains unknown. In this study, we collected 28 years of sex ratio data from Chinese alligators residing in the natural and artificial habitats of Changxing Nature Reserve, China, and examined the differences in the sex ratio dynamics between these two populations. We observed that the sex ratio of wild Chinese alligators is 1 male to 4.507 females, which was significantly lower compared to that of the captive population （1 to 2.040; P 〈 0.001）, and is significantly different to previously documented sex ratios for this species （all P 〈 0.01）. Furthermore, we documented an annually stable （P = 1.000） female-biased sex ratio for wild alligators at hatching [1 male to 4.747 females; 0.174 （0.167~）.182）], in contrast to a dramatically fluctuating sex ratio （P 〈 0.001） in captivity [1 male to 1.674 females; 0.374 （0.246-0.593）], showing a potential mechanism for adjusting the sex structure. Finally, we found that the hatchling sex ratios were similar to that of the population sex ratio （P = 0.748）, with little correlation to air temperature values in the 60-70 day incubation period during the breeding season （July and August; both P 〉 0.05）. Overall, this study indicates that the stabilized female-biased sex ratio of Changxing Chinese alligators might result from selection pressure caused by local mate competition and major inbreeding .

关键词： Reptile Female-biased Temperature-dependent sex determination Conservation

INTERACTION OF PLASMA-LIQUID IN AN OXYGEN GLOW DISCHARGE Ⅱ. OXIDATION DESULFURIZATION OF ISOBUTYL MERCAPTAN

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Chinese Chemical Letters 1992年第11期3卷 863-864页

作者： Wei Lu Zheng lan Lei Jin Kun WANG Wan Ying LIU Chengdu Institute of Organic Chemistry Academia SinicaChengdu 610015

A few factors affecting plasma oxidation desulfurization of isobutyl mercaptan were investigated. Under the reasonable condition, the conversion and degree of desulfurization of isobutyl mercaptan can be achieved up t... 详细信息

关键词： Pro INTERACTION OF PLASMA-LIQUID IN AN OXYGEN GLOW DISCHARGE OXIDATION DESULFURIZATION OF ISOBUTYL MERCAPTAN

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复合材料椭圆板的固有频率

工程力学 2001年第2期18卷 82-91页

作者：武兰河吴松石家庄铁道学院交通工程系石家庄050043 石家庄铁路工程学校校长办公室石家庄050041

本文用Ｒｉｔｚ能量法求解层叠复合材料椭圆板的固有频率。基于Ｒｅｄｄｙ的高阶剪切变形理论导出了板的能量泛函，然后用一个完备的二元多项式级数与一个满足边界条件的基本函数的乘积作为振型函数，由能量最小原理导出了求解固有频率... 详细信息

本文用Ｒｉｔｚ能量法求解层叠复合材料椭圆板的固有频率。基于Ｒｅｄｄｙ的高阶剪切变形理论导出了板的能量泛函，然后用一个完备的二元多项式级数与一个满足边界条件的基本函数的乘积作为振型函数，由能量最小原理导出了求解固有频率的特征方程。文中给出了详细的数学公式，研究了方法的收敛性和计算精度，并与已有结果作了比较。

关键词：复合材料椭圆板自由振动固有频率高阶理论