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Unconditional and Conditional QTL Mapping for Tiller Numbers at Various Stages with Single Segment Substitution lines in Rice(Oryza sativa L.)

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Agricultural Sciences in China 2008年第3期7卷 257-265页

作者： ZHAO Fang-ming liU Gui-fu ZHU Hai-tao DING Xiao-hua zeNG Rui-zhen zhang ze-min li Wen-tao zhang Gui-quan Guangdong Key Laboratory of Plant Molecular Breeding South China Agricultural University Guangzhou 510642 P.R.China

Tiller is one of the most important agronomic traits which influences quantity and quality of effective panicles and finally influences yield in rice. It is important to understand ＂static＂ and ＂dynamic＂ information of the QTLs for tillers in rice. This work was the first time to simultaneously map unconditional and conditional QTLs for tiller numbers at various stages by using single segment substitution lines in rice. Fourteen QTLs for tiller number, distributing on the corresponding substitution segments of chromosomes 1, 2, 3, 4, 6, 7 and 8 were detected. Both the number and the effect of the QTLs for tiller number were various at different stages, from 6 to 9 in the number and from 1.49 to 3.49 in the effect, respectively. Tiller number QTLs expressed in a time order, mainly detected at three stages of 0-7 d, 14-21 d and 35-42 d after transplanting with 6 positive, 9 random and 6 negative expressing QTLs, respectively. Each of the QTLs expressed one time at least during the whole duration of rice. The tiller number at a specific stage was determined by sum of QTL effects estimated by the unconditional method, while the increasing or decreasing number in a given time interval was controlled by the total of QTL effects estimated by the conditional method. These results demonstrated that it is highly effective and accurate for mapping of the QTLs by using single segment substitution lines and the conditional analysis methodology.

关键词： single segment substitution line unconditional QTL mapping conditional QTL mapping tiller number rice

A numerical method for spherical particle motion in turbulent flow with large Reynolds number

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Journal of Environmental Sciences 1999年第4期11卷 407-414,442页

作者： zhang Yong\|ze\+1, li Jia\+2, li Ke feng\+2, WANG Xuan\+3 (1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China 2. Sichuan University, Chengdu 610065, China 3. Beijing Normal University, Beijing 100875, China) 中国环境科学院标准所北京四川大学高速水力学国家重点实验室四川成都北京师范大学环科所北京

A new mathematical model, fluctuation spectrum random trajectory model (FSRTM) for the particle motion in environmental fluid was developed using Lagrangian method, in which the time mean velocity of the fluid was calculated by a time mean velocity formula for two dimensional homogeneous shear turbulent flows in open channel, the velocity fluctuation of the fluid was determined by Fourier expansion and fluctuation spectrum, and the particle motion equation was solved using Ronge Kutta method. For comparison, the spherical cation exchange resins with a density of 1 44 g/cm\+3 and diameters ranging from 0 50—0 60 mm, 0 60—0 70 mm and 0 80—0 90 mm were selected as the experimental solid particles, and their moving velocities and trajectories in shear turbulent flows with the flow Reynolds number of 4710, 10240, 11900 and 20760 were investigated. The comparing analyses of the modeled results with the measured results have shown that the model developed in this paper can describe the motions of the particles in shear turbulent flow.

关键词： shear turbulent flow particle motion fluctuation spectrum random trajectory model

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Chinese Medical Journal 2010年第17期123卷 2392-2399页

作者： FENG Jing Ambrose An-Po Chiang WU Qi CHEN Bao-yuan CUI lin-yang liANG Dong-chun zhang ze-li YAO Wo Department of Respiratory Disease Tianjin Medical University General Hospital Tianjin 300052 China Division of Pulmonary and Critical Care Medicine Duke University Medical Center Durham NC 27710 USA Tianjin Neurology Research Institute Tianjin 300052 China Tianjin Medical University Endocrinology Research Institute Tianjin 300052 China

Background Sleep disturbance is common in patients with emphysema. This study aimed to develop a novel model of sleep-related hypoxemia （SRH） in emphysema （SRHIE） with rats, and to explore the inflammatory status of SRHIE in lung, liver, pancreas, carotid artery and whole *** Seventy-five male Wistar rats were assigned to 5 groups with 15 per group according to the exposure conditions. The protocols varied with the degree of hypoxia exposure and severity of pre-existing emphysema caused by cigarette smoke exposure：（1） SRH control （SRHCtrl） group, sham smoke exposure （smoke exposure, exposed to smoke of 15 cigarettes twice everyday, 16 weeks） and SRH exposure （12.5% O2, 3 hours, SRH exposure, divide total hypoxia time （1.5 hours or 3 hours） into 4 periods evenly （22.5 minutes or 45 minutes） and distribute these hypoxia periods evenly into physiological sleep time of rats identified by electroencephalogram, week 9 to week 16）; （2） Emphysema control （ECtrl） group, smoke exposure and sham SRH exposure （21% O2, 3 hours）; （3） Short SRH in emphysema （SRHShort） group, smoke exposure and short SRH exposure （12.5% O2, 1.5 hours）; （4） Mild SRH in emphysema （SRHMild） group,smoke exposure and mild SRH exposure （15% O2, 3 hours）; （5） Standard SRH in emphysema （SRHStand） group, smoke exposure and SRH exposure （12.5% O2, 3 hours）. ECtrl, SRHShort, SRHMild and SRHStand groups were groups with emphysematous rats. Two days before the end of exposure, 5 rats in each group were randomly selected for arterial blood gas analysis. In the rest 10 rats in each group, we obtained blood samples and bronchoalveolar lavage fluid （BALF）for routine tests. We also obtained tissue blocks of lung, liver, pancreas, and right carotid artery for pathologic scoring and measurements of liver oxidative stress （measuring hepatic oxidative stress enzymes, superoxide dismutase （SOD） activity, catalase （CAT） activity and malondialdehyde （MDA） concentration）.Results Emphysematous groups had higher me

关键词： sleep-related hypoxemia emphysema inflammation oxidative stress bronchoalveolar lavage fluid superoxide dismutase catalase malondialdehyde

水溶性LaF_3:Eu荧光纳米粒子的合成及表征

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功能材料 2008年第9期39卷 1542-1544页

作者：张泽丽于永丽徐淑坤张秀娟东北大学理学院辽宁沈阳110004

以稀土氯化物、NaF和柠檬酸钠为反应原料,水浴加热合成水溶性LaF3∶Eu荧光纳米粒子,考察了反应温度、溶液pH值和反应原料配比等对合成粒子荧光性能的影响,给出了最佳反应条件。红外光谱实验证明,合成粒子表面包覆了柠檬酸根。XRD测试表... 详细信息

以稀土氯化物、NaF和柠檬酸钠为反应原料,水浴加热合成水溶性LaF3∶Eu荧光纳米粒子,考察了反应温度、溶液pH值和反应原料配比等对合成粒子荧光性能的影响,给出了最佳反应条件。红外光谱实验证明,合成粒子表面包覆了柠檬酸根。XRD测试表明,合成粒子是单一相LaF3晶体,掺杂Eu3+替代La3+进入LaF3晶格,晶粒径为8.3nm。TEM实验表明,合成粒子粒度分布较均匀。该合成方法简便易行,合成粒子的水溶液荧光强度较高且荧光强度稳定,有望将其和生物分子连接,进行生物分子的检测。

关键词：纳米粒子荧光水溶性 LaF3

Synthesis of N-aryl-N'-(5-aryloxymethyl-1,3,4-thiadiazol-2-yl)-ureas Under Microwave Irradiation

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Synthesis of N-aryl-N'-(5-aryloxymethyl-1,3,4-thiadiazol-2-y...

电能表高灵敏度宽负载范围节能控制电路的设计

甘肃省化学会第二十七届年会暨第九届甘肃省中学化学教学经验交流会

作者： Chai Lan-Qin~*,zhang Yu-li,Cui Kai,Wang Zai-rui,zhang Yong-ze,zhang li-wen (School of Chemical and Biological Engineering,Lanzhou Jiaotong University,730070)

The rapid heating effect of microwave irradiation has caught the attention of synthetic chemists in the recent times due to the remarkable reduction of reaction *** is an efficient method because of its virtue of rapid heating capability,high yield and simple *** superiority of these virtues goes beyond of traditional heating *** derivatives are widely used as medicines and agrochemicals because of their anticonvulsive,herbicidal,

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电测与仪表 2006年第8期43卷 14-16,27页

作者：张泽礼张曙辉王燕滨州职业学院山东滨州256624 中国石油大学山东东营257061 滨州市技术监督局山东滨州256600

介绍了一种能够消除感应式电能表潜动,提高灵敏度,拓宽负载范围,并具有节能效果的专利技术。对现行技术存在的问题及本技术的应用电路进行了分析。采用该项技术后,能使感应式电能表在灵敏度、空载损耗等方面优于同规格的电子式电能表。

关键词：补偿力矩弱电流检测节能控制自动调节

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集中供热的节能技术

科技情报开发与经济 2005年第8期15卷 250-251页

作者：张泽丽太原市热力公司山西太原030001

从集中供热节能的必要性出发,论述了综合治理系统水力失调、合理配置供热水泵、系统变流量运行、多热源共网联合供热等几种节能措施的技术及特点。

关键词：集中供热节能水力失调变流量运行多热源供热

Preparation of silver nanoparticles through the reduction of straw-extracted lignin and its antibacterial hydrogel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 504-514页

作者： Lou zhang Shuo li Fu Tang Jingkai zhang Yuetong Kang Hean zhang lidong li State Key Laboratory for Advanced Metals and Materials School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Silver nanoparticles(Ag NPs)have attracted attention in the field of biomaterials due to their excellent antibacterial ***,the reducing and stabilizing agents used for the chemical reduction of Ag NPs are usually toxic and may cause water *** this work,Ag NPs(31.2 nm in diameter)were prepared using the extract of straw,an agricultural waste,as the reducing and stabilizing *** analysis revealed that the straw extract contained lignin,the structure of which possesses phenolic hydroxyl and methoxy groups that facilitate the reduction of silver salts into Ag *** surfaces of Ag NPs were negatively charged due to the encapsulation of a thin layer of lignin molecules that prevented their *** the prepared Ag NPs were added to the precursor solution of acrylamide,free radical polymerization was triggered without the need for extra heating or light irradiation,resulting in the rapid formation of an Ag NP-polyacrylamide composite *** inhibition zone test proved that the composite hydrogel possessed excellent antibacterial ability due to the presence of Ag *** prepared hydrogel may have potential applications in the fabrication of biomedical materials,such as antibacterial dressings.

关键词： silver nanoparticles hydrogel straw extraction antibacterial

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结合优化U-Net和残差学习的细胞膜分割

计算机工程与设计 2019年第11期40卷 3313-3318页

作者：杨云张立泽清齐勇陕西科技大学电气与信息工程学院

为提高果蝇第一龄幼虫腹侧神经索切片图像细胞膜分割精度,实现更为高效的自动化细胞膜分割,提出一种利用批量归一化优化并结合残差学习对图像分割精度进行提升的改进全卷积神经网络U-Net (ResU-Net)。将批量归一化(batch normalization,... 详细信息

为提高果蝇第一龄幼虫腹侧神经索切片图像细胞膜分割精度,实现更为高效的自动化细胞膜分割,提出一种利用批量归一化优化并结合残差学习对图像分割精度进行提升的改进全卷积神经网络U-Net (ResU-Net)。将批量归一化(batch normalization,BN)应用在每一网络模块输出,减少网络内部协变量转移加速网络收敛;为丰富网络特征提取防止梯度消失,采用残差结构对特征进行映射并提升分割准确率。实验结果表明,相比较改进前的U-Net,该深度学习方法具有良好的泛化能力和较高的准确性。

关键词：细胞膜分割批量归一化残差学习全卷积神经网络深度学习