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山东对外经贸 1996年第3期 4-10页

作者： liu guo—dong

Shandong’s enjoying rich natural resources, good environmentfor investment and the sustained, rapid growth of the opening--ori-ented economy to lay a foundation and provide advantages for thefair. Shandong, with the growing agriculture, a satisfactory variety ofindustries, good basic industries and facilities, convenient communica-

关键词： liu guo-dong at the News conference on China Qingdao Foreign Ecomomy and Trade Fair Mr

Induction of Root Hair Growth in a Phosphorus-Buffered Culture Solution

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Agricultural Sciences in China 2006年第5期5卷 370-376页

作者： liu guo-dong James Dunlop Thai Phung Institute of Natural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R. China AgResearch Grasslands Research Center Private Bag 11008 Palmerston North New Zealand

A system to control the release of phosphate in water was successfully established, based on solubility product of [Ca^2＋] and [PO4^3-] using tricalcium phosphate as P source in the hydroponic solution, and adding CaCl2 for supplementing extra Ca^2＋. The system, similar to soil solutions, was a P nutrient buffer solution with very low bioavailable P. The buffer solution induced the roots of both monocotyledon and dicotyledon species to grow abundant root hairs, 3 mm in maximum length. The monocotyledons were corn （Zea mays L.）（var. Yellow Rose）, wheat （Triticum aestivum L.）（var. Yanzhong 144）, Triticale secale L. （vat. Jingsong 5）, and ryegrass （Lolium rigidum L.）（var. Ruanni）, and the dicotyledons were Arabidopsis thaliana L. （var. Columbia）, white clover （Trifolium repens）（var. Kopu）, Lotus （Lotus peduncucatus Cav. Luliginosus Schkuhr）（var. Grasslands Maku）. For these species we proved that the root environment controls the induction of root hair formation. However, the hydroponic buffer solution failed to induce root hairs on the roots of onion （Allium cepa L.）. Other investigators have concluded that corn does not form root hairs in hydroponics, but abundant long root hairs on corn were induced by this buffer system. The roots with abundant long root hairs are called ＂hedgehog roots＂ because they have hairs everywhere just like a hedgehog.

关键词： low-P stress root hairs Arabidopsis thaliana Zea mays Triticum aestivum

Evaluation of Slow Light Periodic Signals Considering the Distortion in EDF

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Chinese Physics Letters 2014年第3期31卷 82-85页

作者： WANG WU Chong-Qing WANG Zhi liu guo-dong liu Lan-Lan SUN Zhen-Chao Institute of Optical Information and Key Lab of Luminescence and Optical Information Technology Beijing Jiaotong University Beijing 100044

Based on the fundamental harmonic phase delay, a new definition of fundamental harmonic fractional delay （FHFD） is proposed to evaluate slow light with the consideration of signal distortion, to eliminate the dependence on the choice of the reference point. By solving the rate equation of erbium-doped fiber （EDF）, it is shown that the slow light always accompanies the signal distortion when the periodic signal propagates in EDF, and FHFD depends on the signal distortion, as well as the average input power, the modulation depth and the length of EDF. The results of simulations and experiments indicate that the definition of FHFD is reasonable and effective to evaluate the slow light of periodic signals.

关键词： FIBERS RESEARCH SEMICONDUCTOR doping ERBIUM SLOW light PHYSICS research

Measurement of the Internal Loss Coefficient of Semiconductor Optical Amplifiers

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Chinese Physics Letters 2013年第5期30卷 172-175页

作者： liu guo-dong WU Chong-Qing WANG Fu MAO Ya-Ya Institute of Optical Information Beijing Jiaotong UniversityBeijing 100044 Key Lab of Luminescence and Optical Information Technology(Ministry of Education) Beijing Jiaotong UniversityBeijing 100044

The internal optical loss in semiconductor optical amplifiers(SOAs)is investigated experimentally and theoretically over a wide injection current range.A new measurement method is proposed without noise figure ***,considering the internal loss in an SOA,a modified formula of the input-output characteristics is *** on the practically measured input-output characteristic curves,the internal loss coefficient of an SOA is measured at different injection *** results demonstrate that the internal loss coefficient of SOAs decreases with increasing injection current.

关键词： SOA injection Internal

Growth and Characterization of High-Quality Single Crystals of Ni- and Zn-Doped Bi_(2)Sr_(2)Ca(Cu_(2−x)M_(x))O_(8+δ)(M=Ni or Zn) High-Temperature Superconductors

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Chinese Physics Letters 2012年第8期29卷 237-240页

作者： liu Shan-Yu ZHANG Wen-Tao ZHAO Lin liu Hai-Yun WU Yue liu guo-dong dong Xiao-Li ZHOU Xing-Jiang National Laboratory for Superconductivity Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190

High-quality large single crystals of Ni-and Zn-doped Bi_(2)Sr_(2)Ca(Cu_(2−x)M_(x))O_(8+δ)(M=Ni or Zn)have been successfully grown by the traveling solvent floating zone *** single crystals are characterized by compositional and structural analyses and their physical properties are investigated by magnetic susceptibility and resistivity measurements.A record high critical temperature with a T_(c)=97.5 K has been achieved in the annealed pristine Bi2212 single *** of Cu by Ni or Zn reduces the superconducting transition temperature when compared with pristine Bi_(2)Sr_(2)CaCu_(2)O_(8+δ)(Bi2212)grown under similar *** successful growth of such pristine Ni-and Zn-doped Bi2212 single crystals will facilitate studies of the relationship between the magnetism and superconductivity in high-temperature cuprate superconductors.

关键词： technique conditions Bi2212

Yield characteristics of japonicalindica hybrids rice in the middle and lower reaches of the Yangtze River in China

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Journal of Integrative Agriculture 2020年第10期19卷 2394-2406页

作者： XU dong ZHU Ying CHEN Zhi-feng HAN Chao HU Lei QIU Shi WU Pei liu guo-dong WEI Hai-yan ZHANG Hong-cheng Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Agricultural College Yangzhou UniversityYangzhou 225009P.R.China

Although a lot of researches have been done on yield characteristics of japonica/indica hybrid rice,there is itte information on differences of yield characteristics between different types of *** determine common characteristics of japonical indica hybrid rice(JIHR)and identify the differences between different types of JIHR,the present study assessed yield characteristics,such as panicle trait,leaf area index(LAI),above-ground biomass accumulation,and nitrogen absorption and uilization,among three types of cultivar of *** our field experiments,three types of JIHR,e.g.,Yongyou,Chunyou and Jiayouzhongke,were divided,and each of them has two cultivars,which were used as materials,meanwhile,using conventional japonica rice(CJR)Wuyingjing 31 and Sujing 9 were as *** results showed that the mean yield of those JIHR was above 12 t ha^-1 in 2017 and 2018,and was 31.9 and 32.2%,respectively higher than that of CJR in the two *** number per panicle of JIHR resulted in high *** yield of JIHR was likely contributed to greater panicle number and more spikelets per *** yielding JIHR showed stronger tllering capacity,larger LAI and above-ground biomass accumulation from jointing to heading stages,which likely contributed to the higher number of spikelets per *** long duration from heading to maturity stages allowed more nitrogen accumulation of higher yielding JIHR.

关键词： japonica/indica hybrid rice yield agronomic trait nitrogen accumulation

Final optics damage online inspection in high power laser facility

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Optoelectronics Letters 2019年第4期15卷 306-311页

作者： WEI Fu-peng CHEN Feng-dong TANG Jun PENG Zhi-tao liu guo-dong Institute of Optical Measurement and Intellectualization Harbin Institute of Technology Harbin 150001 China Research Center of Laser Fusion China Academy of Engineering Physics Mianyang 621900 China

For the laser-induced damage(LID) in large-aperture final optics, we present a novel approach of damage online inspection and its experimental system, which solves two problems: classification of true and false LID and size measurement of the LID. We first analyze the imaging principle of the experimental system for the true and false damage sites, then use kernel-based extreme learning machine(K-ELM) to distinguish them, and finally propose hierarchical kernel extreme learning machine(HK-ELM) to predict the damage size. The experimental results show that the classification accuracy is higher than 95%, the mean relative error of the predicted LID size is within 10%. So the proposed method meets the technical requirements for the damage online inspection.

关键词： laser-induced damage(LID) kernel-based extreme learning machine(K-ELM) hierarchical kernel extreme learning machine(HK-ELM)

Effect of wide-narrow row arrangement in mechanical pot-seedling transplanting and plant density on yield formation and grain quality of japonica rice

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Journal of Integrative Agriculture 2020年第5期19卷 1197-1214页

作者： HU Qun JIANG Wei-qin QIU Shi XING Zhi-peng HU Ya-jie guo Bao-wei liu guo-dong GAO Hui ZHANG Hong-cheng WEI Hai-yan Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Agricultural College Yangzhou UniversityYangzhou 225009P.R.China

Mechanical pot-seedling transplanting is an innovatively developed transplanting method that has the potential to replace mechanical carpet-seedling transplanting. However, the initial pot-seedling transplanting machine lacked optimized density spacing and limited yield potential for japonica rice. Therefore, ascertaining the optimized density by wide-narrow rows and the appropriate transplanting method for yield formation and grain quality of japonica rice is of great importance for high-quality rice production. Field experiments were conducted using two japonica rice cultivars Nanjing 9108 and Nanjing 5055 under three transplanting methods in 2016 and 2017: mechanical pot-seedling transplanting with wide-narrow row(K, average row spacing of 30 cm);equidistant row(D, 33 cm×12 cm);and mechanical carpet-seedling transplanting(T, 30 cm×12.4 cm). In addition, five different density treatments were set in K(K1–K5, from 18.62×10~4 to 28.49×10~4 hills ha^(–1)). The results showed that the highest yield was produced by a planting density of 26.88×104 hills ha^(–1) in mechanical pot-seedling transplanting with wide-narrow row with a greater number of total spikelets that resulted from significantly more panicles per area and slightly more grain number per panicle, as compared with equidistant row, and yield among density in wide-narrow row showed a parabolic trend. Compared with mechanical carpet-seedling transplanting, the treatment of the highest yield increased yield significantly, which was mainly attributed to the larger sink size with improved filled-grain percentage and grain weight, higher harvest index, and increased total dry matter accumulation, especially the larger amount accumulated from heading stage to maturity stage. With the density in wide-narrow row decreasing, processing quality, appearance quality, and nutrition quality were all improved, whereas amylose content and the taste value were decreased. Compared with mechanical carpet-seedling transplanting,

关键词： density grain quality japonica rice transplanting methods wide-narrow row yield formation

对高分子稀溶液理论教学中几个问题的理解与讨论

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高分子材料科学与工程 2010年第8期26卷 172-174页

作者：刘国栋河北工业大学化工学院天津300130

对高分子稀溶液理论教学中应注意的几个问题进行了分析和讨论,重点是高分子稀溶液热力学性质偏离理想溶液的原因、θ状态的产生与描述。笔者认为应强调高分子不存在理想溶液,其根本原因在于高分子和溶剂分子尺寸的差异,θ状态是混合热... 详细信息

对高分子稀溶液理论教学中应注意的几个问题进行了分析和讨论,重点是高分子稀溶液热力学性质偏离理想溶液的原因、θ状态的产生与描述。笔者认为应强调高分子不存在理想溶液,其根本原因在于高分子和溶剂分子尺寸的差异,θ状态是混合热与混合熵平衡的结果。熵参数受链段-溶剂相互作用参数χ影响,当χ=0时,熵参数ψ近似为0.5;当χ发生变化,ψ偏离0.5。同时讨论了高分子链的实际尺寸、晶格理论中的一个近似和稀溶液理论中微体积元中的溶剂化学位等问题。

关键词：高分子物理高分子稀溶液理论 θ状态

Simultaneous Enhancement of Electrical Conductivity and Seebeck Coefficient of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)Films Treated with Urea

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Chinese Physics Letters 2011年第3期28卷 191-194页

作者： KONG Fang-Fang liu Cong-Cong XU Jing-Kun JIANG Feng-Xing LU Bao-Yang YUE Rui-Rui liu guo-dong WANG Jian-Min Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal UniversityNanchang 330013 School of Communication and Electronics Jiangxi Science and Technology Normal UniversityNanchang 330013

The thermoelectric performance of free-standing poly(3,4-ethylenedioythiophene):poly(styrenesulfonate)(PEDOT:PSS)thin films deposited from aqueous dispersion treated by different concentrations of urea are investigated in *** electrical conductivity,Seebeck coefficient and power factor of PEDOT:PSS films versus temperature are determined,*** is found that both the electrical conductivity and Seebeck coefficient of PEDOT:PSS films are enhanced after treatment with *** could be enhanced from 8.16 to 63.13S-cm^(-1),the Seebeck coefficient is increased from 14.47 to 20.7μV.K^(-1)and the power factor is rises to 2.7μW.m^(-1)K^(-2)at 300K.

关键词： Seebeck conductivity electrical