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Morphological Characteristics and Nutrient Content of Fine Roots of 2-Year-Old and 3-Year-Old Eucalyptus grandis Plantation

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Agricultural Biotechnology 2012年第6期1卷 9-14页

作者： Xiaoyu DUAN Xianwei LI liuling zhou Weishuang WANG Hui CHEN College of Forestry Sichuan Agricultural University (Ya'an Campus) College of Landscape Architecture Sichuan Agricultural University (Chengdu Campus)

[ Objective] This study aimed to explore the morphological characteristics and nutrient content of f＇me roots of 2-year-old and 3-year-old Euca/yptus grand/s plantation and investigate the correlation. [ Method] Fine roots of 2-year-old and 3-year-old Eucalyptus grandis plantation were collected as experimental materials, to determine the root diameter （D）, root length （L）, specific root length （SRL） and contents of major nutrient elements N, P, K, Ca, Mg and C of fine roots （level 1 -5）, study the morphological characteristics and major nutrient element content and investigate the correlation. [ Result] The results showed that morphological differences of fine roots （ level 1 - 5 ） of Eucalyptus grandis plantation were great with the increase of root order, to be specific, D and L increased and SRL decreased with the increasing root order; SRL, L and D of 3-year-old Eucalyptus grauclis plantation were greater than those of 2-year-old Euca/yptus grand/s plantation. Contents of N, Ca, Mg and C of fine roots of 2-year-old and 3-year-old Eucalyptus grandis plantation showed consistent orders with the increase of root order： N and Mg contents were reduced, while Ca and C contents were enhanced; P and K contents varied with different forest ages; both 2-year-old and 3-year- old Eucalyptus grandis showed an order of C 〉 K 〉 Ca （Mg）〉 N. Major nutrient element content and morphological characteristics of Eucalyptus grand/s fine roots （level 1 -5 ） were extremely significantly correlated （P 〈0.01 ）, SRL, L and D could be adopted as reference indices to evaluate nutrient status of Eucalyptus grand/s. Required nutrients and fine root morphology of Eucalyptus grandis plantation changed with the increase of forest age, and the nutrient cycling and energy flow patterns also changed; major nutrient dements in fine roots of 2-year-old and 3-year-old Eucalyptus grandis plantation transferred in a different order from the growth order, therefore N fertilizer could be applied to impr

关键词： Eucalyptus grandis Fine root Root order Nutrient elements Morphological characteristics

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通用性星树状油气管网布局优化模型研究

西南石油大学学报（自然科学版） 2021年第2期43卷 149-157页

作者：周军周柳玲梁光川陈川周轩西南石油大学石油与天然气工程学院四川成都610500 中国石油塔里木油田公司油气田产能建设事业部新疆库尔勒841000

集输管网结构复杂、投资大,是油气田建设的重要组成部分,优化集输管网布局方案是油气田降低开发成本的关键之一。由于星树状管网在集输系统中被广泛使用,针对星树状管网最优布局问题,开展了星树状管网布局优化模型的研究,重点关注了集... 详细信息

集输管网结构复杂、投资大,是油气田建设的重要组成部分,优化集输管网布局方案是油气田降低开发成本的关键之一。由于星树状管网在集输系统中被广泛使用,针对星树状管网最优布局问题,开展了星树状管网布局优化模型的研究,重点关注了集输站处理容量和集输半径的约束限制,建立了 Q模型、R模型、QR模型等含有大量离散变量的混合整数线性规划的通用模型。以实际的油气田为例,运用分支定界法求解上述模型,得到各方案下的拓扑结构、集输站设施位置、中央处理设施位置等系统最优解,证明了模型与算法的正确性和可靠性。通过分级优化策略和整体优化结果的对比分析,整体求解星树状管网模型的总投资更低。提出的通用性星树状油气管网布局优化模型,可根据工程实际情况确定不同约束条件下的最优管网布局,有效指导油气田地面工程设计与建设。

关键词：油气管网通用性模型混合整数线性规划布局优化

基于混合整数规划模型的星树型油气管网布局整体优化研究

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中国海上油气 2020年第6期32卷 165-171页

作者：周军周柳玲梁光川陈川李泽龙黄薪宇周轩西南石油大学石油与天然气工程学院四川成都610500 中国石油塔里木油田公司新疆库尔勒841000

油气管网建设成本巨大,因此需要根据管网的特点对其布局进行优化来降低投资,保障其合理性和经济性。本文针对油气集输系统管网设施选址离散性的特点,建立了考虑集输半径约束、处理容量约束以及数量约束条件的星树型油气管网的混合整数... 详细信息

油气管网建设成本巨大,因此需要根据管网的特点对其布局进行优化来降低投资,保障其合理性和经济性。本文针对油气集输系统管网设施选址离散性的特点,建立了考虑集输半径约束、处理容量约束以及数量约束条件的星树型油气管网的混合整数规划模型,并以陆上虚拟气田为例,采用分支定界法整体求解数学模型,得到了不同约束条件下的最优集输方案,分析了单个约束对整体布局的影响,进行了分级优化与整体优化下的井组划分和管网投资对比;最后以某陆上油田和海上油田为例进行了整体优化求解,进一步验证了模型的可靠性以及整体优化集输方案的经济性。

关键词：油气集输系统星树型混合整数规划模型集输方案整体优化分级优化

The TaGW2‐TaSPL14 module regulates the trade‐off between tiller number and grain weight in wheat

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Journal of Integrative Plant Biology 2024年第9期66卷 1953-1965页

作者： Chao Jian Yuxue Pan Shujuan Liu Mengjiao Guo Yilin Huang Lina Cao Weijun Zhang liuling Yan Xueyong Zhang Jian Hou Chenyang Hao Tian Li State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Crop Research Institute Ningxia Academy of Agriculture and Forestry SciencesYinchuan 750002China Department of Plant and Soil Sciences Oklahoma State UniversityStillwaterOklahoma 74078USA

IDEAL PLANT ARCHITECTURE1(IPA1)is a pivotal gene controlling plant architecture and grain ***,little is known about the effects of Triticum aestivum SQUAMOSA PROMOTER‐BINDING‐LIKE 14(TaSPL14),an IPA1 ortholog in wheat,on balancing yield traits and its regulatory mechanism in wheat(*** L.).Here,we determined that the *** GRAIN WIDTH2(TaGW2)‐TaSPL14 module influences the balance between tiller number and grain weight in *** of TaSPL14 resulted in a reduced tiller number and increased grain weight,whereas its knockout had the opposite effect,indicating that TaSPL14 negatively regulates tillering while positively regulating grain *** further identified TaGW2 as a novel interacting protein of TaSPL14 and confirmed its ability to mediate the ubiquitination and degradation of *** on our genetic evidence,TaGW2 acts as a positive regulator of tiller number,in addition to its known role as a negative regulator of grain weight,which is opposite to ***,combinations of TaSPL14‐7A and TaGW2‐6A haplotypes exhibit significantly additive effects on tiller number and grain weight in wheat *** findings provide insight into how the TaGW2‐TaSPL14 module regulates the trade‐off between tiller number and grain weight and its potential application in improving wheat yield.

关键词： grain weight TaGW2 TaSPL14 tiller number wheat

婚姻满意度对儿童心理适应性的影响：成人依恋、父母情绪表达、亲子依恋的多重中介作用

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心理与行为研究 2017年第5期15卷 714-720页

作者：周柳伶李信刘彤陈毅文中国科学院行为科学重点实验室中国科学院心理研究所北京100101 中国科学院大学心理系北京100049

对390名小学4-6年级儿童及其父母进行问卷调查,考察父母婚姻满意度对儿童心理适应性的影响,以及成人依恋、父母情绪表达和亲子依恋的多重中介作用。结果表明:父亲(母亲)婚姻满意度分别通过6条途径影响儿童心理适应性:(1)父亲(母亲)婚姻... 详细信息

对390名小学4-6年级儿童及其父母进行问卷调查,考察父母婚姻满意度对儿童心理适应性的影响,以及成人依恋、父母情绪表达和亲子依恋的多重中介作用。结果表明:父亲(母亲)婚姻满意度分别通过6条途径影响儿童心理适应性:(1)父亲(母亲)婚姻满意度通过父亲回避,父亲积极情绪表达,父子依恋安全性影响儿童心理适应性;(2)父亲(母亲)婚姻满意度通过父亲回避,母亲积极情绪表达,母子依恋安全性影响儿童心理适应性;(3)父亲(母亲)婚姻满意度通过母亲回避,父亲积极情绪表达,父子依恋安全性影响儿童心理适应性;(4)父亲(母亲)婚姻满意度通过母亲回避,父子依恋安全性影响儿童心理适应性;(5)父亲(母亲)婚姻满意度通过母亲回避,母子依恋安全性影响儿童心理适应性;(6)父亲(母亲)婚姻满意度通过母亲回避,母亲积极情绪表达,母子依恋安全性影响儿童心理适应性。

关键词：婚姻满意度成人依恋父母情绪表达亲子依恋儿童心理适应性

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元坝高含硫气藏超深水平井钻井技术

特种油气藏 2017年第1期24卷 162-165页

作者：陶鹏敬玉娟何龙张春瑞周柳玲油气藏地质及开发工程国家重点实验室四川成都610500 西南石油大学四川成都610500 中国石化西南油气分公司四川成都610041 中国石油辽河油田分公司辽宁盘锦124109

四川盆地元坝气田长兴组气藏具有超深、高温、高压、H_2S和CO_2含量及分压高的特点,针对高压高含硫超致密复杂地层深井钻井技术问题,研制了气体钻井钻具抗疲劳减震技术以及气液快速转换技术,形成了一套较为完整的高含硫气藏超深水平井... 详细信息

四川盆地元坝气田长兴组气藏具有超深、高温、高压、H_2S和CO_2含量及分压高的特点,针对高压高含硫超致密复杂地层深井钻井技术问题,研制了气体钻井钻具抗疲劳减震技术以及气液快速转换技术,形成了一套较为完整的高含硫气藏超深水平井陆相硬地层气体钻井技术。该技术突破了7 000 m以上的超深水平井工程技术瓶颈,对国内超深水平井技术的发展有一定借鉴作用。

关键词：高含硫气藏超深水平井气体钻井技术气液转换工艺元坝气田

The TaGW2-TaSPL14 module regulates the trade-off between tiller number and grain weight in wheat

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Journal of Integrative Plant Biology 2024年第09期 1953-1965页

作者： Chao Jian Yuxue Pan Shujuan Liu Mengjiao Guo Yilin Huang Lina Cao Weijun Zhang liuling Yan Xueyong Zhang Jian Hou Chenyang Hao Tian Li State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop Sciences Chinese Academy of Agricultural Sciences Crop Research Institute Ningxia Academy of Agriculture and Forestry Sciences Department of Plant and Soil Sciences Oklahoma State University

IDEAL PLANT ARCHITECTURE1(IPA1) is a pivotal gene controlling plant architecture and grain yield. However, little is known about the effects of Triticum aestivum SQUAMOSA PROMOTERBINDING-LIKE 14(Ta SPL14), an IPA1 ortholog in wheat, on balancing yield traits and its regulatory mechanism in wheat(T. aestivum L.). Here, we determined that the T. aestivum GRAIN WIDTH2(Ta GW2)-Ta SPL14 module influences the balance between tiller number and grain weight in *** of Ta SPL14 resulted in a reduced tiller number and increased grain weight, whereas its knockout had the opposite effect, indicating that Ta SPL14 negatively regulates tillering while positively regulating grain weight. We further identified Ta GW2 as a novel interacting protein of Ta SPL14 and confirmed its ability to mediate the ubiquitination and degradation of Ta SPL14. Based on our genetic evidence, Ta GW2 acts as a positive regulator of tiller number, in addition to its known role as a negative regulator of grain weight, which is opposite to Ta SPL14. Moreover, combinations of Ta SPL14-7A and Ta GW2-6A haplotypes exhibit significantly additive effects on tiller number and grain weight in wheat breeding. Our findings provide insight into how the Ta GW2-Ta SPL14 module regulates the trade-off between tiller number and grain weight and its potential application in improving wheat yield.

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低压离子色谱法测定三苯基膦中痕量氯离子

西南师范大学学报（自然科学版） 2002年第6期27卷 910-912页

作者：刘玲周光明张新申西南师范大学化学化工学院重庆400715 四川大学轻工与食品学院成都610065

采用双柱低压离子色谱分离,电导检测了三苯基膦样品中的痕量氯离子.以Na2CO3作淋洗液,流动注射进样,优化色谱分离条件,并测定了该法的精密度,线性范围及回收率.

关键词：低压离子色谱法氯离子三苯基膦催化剂含量测定石油化工

Thermal Fission Rate Calculated Numerically by Particles Multi-passing over SaddlePoint

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Communications in Theoretical Physics 2004年第2期41卷 273-278页

作者： liuling BAOJing-Dong DepartmentofPhysics BeijingNormalUniversityBeijing100875.China

Langevin simulation of the particles multi-passing over the saddle point is proposed to calculate thermal fission rate. Due to finite friction and the corresponding thermal fluctuation, a backstreaming exists in the process of the particle descent from the saddle to the scission. This leads to that the diffusion behind the saddle point has influence upon the stationary flow across the saddle point. A dynamical correction factor, as a ratio of the flows of multi- and first-overpassing the saddle point, is evaluated analytically. The results show that the fission rate calculated by the particles multi-passing over the saddle point is lower than the one calculated by the particle firstly passing over the saddle point, and the former approaches the results at the scission point.

关键词： Langevin simulation backstreaming effect multi-passing oven saddle point dynamical correction factor