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芥菜型油菜茎秆抗倒伏相关性状的组织观察与QTL初定位

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植物遗传资源学报 2024年第3期25卷 431-439页

作者：王倩杨旭张金泽肖莉晶余坤江田恩堂贵州大学农学院贵阳550025

倒伏是严重降低油菜产量、品质和影响机械化生产的重要影响因素之一。培育和应用抗倒伏性强的油菜品种是实现油菜机械化生产和高产的重要措施,而提高抗倒伏能力的重点是提高茎秆强度。因此,本研究以包含197个芥菜型油菜株系的重组自交系... 详细信息

倒伏是严重降低油菜产量、品质和影响机械化生产的重要影响因素之一。培育和应用抗倒伏性强的油菜品种是实现油菜机械化生产和高产的重要措施,而提高抗倒伏能力的重点是提高茎秆强度。因此,本研究以包含197个芥菜型油菜株系的重组自交系(RILs,recombinant inbred lines)群体为研究材料,2023年分别在贵阳和贵定两个环境条件下测定了该群体的茎粗、茎秆鲜干比、茎秆充实度、茎秆密度、茎秆抗折力和茎秆抗折强度等6个性状,6个性状均表现出较大的变异,变异系数为14.29%~41.35%,且符合正态分布。相关性分析显示,两个环境条件下,茎秆充实度与茎秆密度、抗折强度二者之间均呈极显著正相关。进一步对茎秆抗折强度表现为高中低的3类材料进行茎秆微观结构观察,相比较于低抗倒材料,高抗倒材料的皮层更厚、维管束个数更多、维管束排列更紧密与维管束面积占比更大。QTL初定位检测到4个QTL与茎秆茎粗有关;2个QTL与茎秆鲜干比有关;2个QTL与茎秆充实度有关;2个QTL与茎秆密度有关;4个QTL与茎秆抗折力有关,可解释的表型变异为4.1%~5.1%;9个QTL与茎秆抗折强度有关,可解释的表型变异为7.5%~11.0%。本研究的开展可为后续芥菜型油菜抗倒伏相关基因的克隆提供基础数据信息,并对油菜抗倒伏育种有一定参考价值。

关键词：芥菜型油菜抗倒伏茎秆抗折强度显微结构

Heralded amplification of single-photon entanglement with polarization feature

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Frontiers of physics 2018年第5期13卷 241-249页

作者： yu-yu Jin Sheng-Xian qin Hao Zu Lan Zhou Wei Zhong yu-Bo Sheng School of Science Nanjing University of Posts and Telecommunications Nanjing 210003 China New Energy Technology Engineering Laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China Institute of Signal Processing Transmission Nanjing University of Posts and Telecommunications Nanjing 210003 China

Heralded noiseless amplification is beneficial in overcoming transmission photon loss in a noisy quantum channel. We propose a single-photon-assisted heralded noiseless amplification protocol of the single- photon entanglement （SPE）, where the single-photon qubit has an arbitrary unknown polarization feature. We focus on both the complete and partial photon loss during the transmission process. After the amplification, the parties can recover the pure less-entangled SPE into a maximally entangled SPE and increase its fidelity. Moreover, the polarization feature of the single-photon qubit will be well preserved and not be leaked. Our protocol can be realized under our current experimental condition. Based on the features above, our protocol may be useful in the quantum secure communication schemes that encode information in the polarization degree of freedom of photons.

关键词： quantum communication single-photon entanglement quantum state amplification polarization feature

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银江水电站右岸高陡边坡控制爆破技术

工程爆破 2024年第2期30卷 73-77页

作者：雷晓军马元军李斌余伟游泳葛洲坝易普力四川爆破工程有限公司攀枝花分公司四川攀枝花617000

为减小边坡开挖过程爆破振动对永久边坡及临近建(构)筑物结构稳定性的影响,同时提高爆破施工效率,针对银江水电站右岸高陡边坡复杂的施工环境,基于精细控制爆破技术,利用数码电子雷管精确延时的特性,对边坡主爆孔及预裂爆孔孔径、炸药... 详细信息

为减小边坡开挖过程爆破振动对永久边坡及临近建(构)筑物结构稳定性的影响,同时提高爆破施工效率,针对银江水电站右岸高陡边坡复杂的施工环境,基于精细控制爆破技术,利用数码电子雷管精确延时的特性,对边坡主爆孔及预裂爆孔孔径、炸药类型、装药结构、延时时间等进行精确设计,并采用爆破振动测试仪对边坡振动速度进行监测验证。结果显示:主爆区采用直径Φ110 mm炮孔,Φ70 mm二号岩石乳化炸药连续耦合装药,孔间炮孔延时时间17 ms,排间炮孔延时60 ms,逐孔起爆,预裂爆区采用直径Φ90 mm炮孔,Φ32 mm二号岩石乳化炸药间隔装药,严格控制施工质量,爆破效果较好,临近爆区永久边坡最大振动速度为7.3 cm/s,永久边坡预裂爆破半孔率超过90%,实现了连续、安全、高效的爆破施工作业。

关键词：水电站高陡边坡减振控制爆破

数字孪生驱动的水工闸门损伤在线识别与监测方法

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水电能源科学 2024年第9期42卷 143-147页

作者：朱潇张钰奇熊景然陈栋李成郑州大学机械与动力工程学院河南郑州450001

针对水工闸门损伤识别过程中存在的识别流程复杂、实时性较差、可视化程度低的问题,提出一种数字孪生驱动的水工闸门损伤在线识别与监测方法。首先阐述闸门孪生数据的获取方法,并采用融合注意力模块的卷积神经网络对其进行特征提取,构... 详细信息

针对水工闸门损伤识别过程中存在的识别流程复杂、实时性较差、可视化程度低的问题,提出一种数字孪生驱动的水工闸门损伤在线识别与监测方法。首先阐述闸门孪生数据的获取方法,并采用融合注意力模块的卷积神经网络对其进行特征提取,构建实时数据驱动的闸门损伤识别模型;然后利用数字孪生技术搭建水工闸门虚拟现实场景,并将损伤识别结果映射至闸门虚拟几何模型,实现闸门损伤的实时可视化监测;最后将该方法应用于水工闸门试验平台,并借助Unity3D平台实现闸门数字孪生损伤识别系统的开发。结果表明,构建的水工闸门损伤识别模型对损伤状态的识别准确率达到了95%以上,系统运行每帧平均用时为136.68 ms,具有较高的准确性和较快的分析速度,验证了该方法在水工闸门损伤识别中的可行性.

关键词：水工闸门损伤识别数字孪生可视化监测

24小时活动行为对学龄前儿童执行功能影响的成分等时替代效益研究

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体育学刊 2024年第2期31卷 148-154页

作者：胥祉涵王世强余澳林陈昱欣肖顺英马梓桐湖南工业大学体育学院湖南株洲412006 体质健康和运动健身湖南省重点实验室湖南株洲412006 湖南师范大学教育科学学院湖南长沙410081

对湖南省株洲市209名3~6岁学龄前儿童展开横断面调查,通过加速度计测量24 h活动,采用学龄前儿童执行功能问卷父母版评估学龄前儿童执行功能水平,运用成分数据和等时替代模型方法分析24 h活动时间占比与学龄前儿童执行功能的关系,以及24 ... 详细信息

对湖南省株洲市209名3~6岁学龄前儿童展开横断面调查,通过加速度计测量24 h活动,采用学龄前儿童执行功能问卷父母版评估学龄前儿童执行功能水平,运用成分数据和等时替代模型方法分析24 h活动时间占比与学龄前儿童执行功能的关系,以及24 h活动行为时间重新分配与执行功能的预期变化。结果显示:(1)MVPA时间占比与学龄前儿童执行功能总分呈显著负相关(β_(1)^((4))=-5.45,P=0.03),LPA时间占比与学龄前儿童执行功能总分也呈显著负相关(β_(1)^((4))=-10.67,P<0.001),睡眠时间占比与学龄前儿童执行功能总分呈显著正相关(β_(1)^((4))=15.30,P<0.001),久坐行为时间占比与学龄前儿童执行功能总分无相关性。(2)15 min等时替代模型预测变化显示,MVPA替换其他活动行为后,学龄前儿童执行功能总分均显著下降,反之则上升,且MVPA与其他3种活动行为时间重新分配对执行功能的等时替代效益具有不对称性;在所有替代中,MVPA替代LPA对降低执行功能总分的效应最佳。研究认为:幼儿园、家长应重视学龄前儿童24 h活动行为时间的综合效应,以及MVPA不足对学龄前儿童执行功能的负面效应。不仅要长期坚持“多动少坐”的理念,更应促进久坐与MVPA之间的转换,同时可以通过提高PA强度促使LPA向MVPA转换,以促进学龄前儿童执行功能发展。

关键词： 24 h活动行为学龄前儿童执行功能等时替代

Characteristics of retinal vein occlusion with final vision better than 78 letters after sequential therapy with ranibizumab and triamcinolone acetate

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International Journal of Ophthalmology(English edition) 2017年第2期10卷 271-276页

作者： Yao-Wu qin Jia yu Quan Zhang Ophthalmology Department of EENT Hospital Affiliated to Fudan UniversityShanghai Key Laboratory of Visual Impairment and RestorationShanghai 200031China

AIM： To analyze the reasons that may lead to the different vision result by combining the ranibizumab and triamcinolone acetate（TA） in sequence to treat macular edema in retinal vein occlusion（RVO）.METHODS： Ranibizumab and TA were combined in sequence to treat 43 patients with macular edema secondary to *** months after the treatment,patients with central fovea thickness（CFT） less than 300 μm in optical coherence tomography（OCT） were collected into Groups I and II,based on vision acuity（VA） better than 78 letters or less than 60 *** age,baseline VA,duration from onset to treatment,CFT at the baseline,sub-retinal fluid（SRF）,sub-foveal exudates and injection times of TA and ranibizumab were taken into ***： The mean age of the subjects was 46.4y in Group I but 57.5y in Group *** difference of age was significant between groups（P〈0.01）.The mean baseline VA was 51.4 letters in Group I and 43.9 letters in Group II（P〈0.05）.The baseline CFT were 670.9 μm in Group I with SRF in 54.3% patients and 678.1 μm in Group II with SRF in 52.9%（P〉0.05）.The mean number of injections of TA was 0.9 and the mean number of injections of ranibizumab was 2.3 in Group I but 1.7 and 2.9 respectively in Group *** treatment times of ranibizumab had no difference between the 2 groups（P〉0.05） but the difference of TA injection times was significant（P〈0.05）.Subfoveal exudates at final stage happened in no subjects in Group I but in 45.83% subjects in Group ***： This combined treatment is safer than TA injection and cheaper than ranibizumab injection *** patients and earlier treatment will help to get better vision *** exudates at the final stage have significant relationship with vision *** relationship existed between the baseline CFT,SRF and the vision outcome.

关键词： retinal vein occlusion macular edema ranibi-zumab triamcinolone acetate sequential therapy

Morphodynamic Characteristics and Medium-Term Simulation of the North-South Passage Under the Impact of the Yangtze Estuary Deepwater Navigation Channel Project

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China Ocean Engineering 2020年第2期34卷 198-209页

作者： JIAO Jian DOU Xi-ping GAO Xiang-yu DING Lei YANG xiao-yu Key Laboratory of Port Waterway and Sedimentation Engineering of MOTNanjing Hydraulic Research InstituteNanjing 210029China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China

The morphological evolution characteristics of the North-South Passage area since the construction of the Yangtze Estuary Deepwater Navigation Channel Project(DNCP)are analyzed on the basis of the measured data.A twodimensional morphodynamics numerical model of the Yangtze Estuary is established to verify the morphological evolution of the North-South Passage under the influence of the DNCP and to predict the future evolution in the next 40 *** analysis shows that the North Passage has experienced rapid adjustment stages and adaptive stages after the construction of the *** erosion occurred along the main channel,and slow siltation could be observed in the area between the *** South Passage showed a state of upper section erosion and down section *** present,the whole South Passage is in a slight erosion *** to the numerical model,the eroding and silting speed of the North Passage will slow down in the *** present state that erosion occurs in the main channel and siltation occurs between the groins will *** South Passage will still maintain upper section erosion and down section deposition in the *** to the main channel erosion of the North Passage and siltation of the South Passage,the sediment division ratio of the North Passage will increase in the future but still be smaller than 50%.After morphological evolution of 40 years,the direction of residual sediment transport caused by M2 and M4 tidal components in the North Passage has not changed,but the transport rate will *** is considered that the morphological evolution of the North-South Passage could reach a relatively stable state after 40 years.

关键词： Yangtze Estuary numerical model morphology tidal current sediment transport deepwater navigation channel project(DNCP)

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基于POA-RVM模型的抽蓄机组故障诊断

人民长江 2024年第9期55卷 217-224页

作者：倪晋兵肖仁军孙慧芳夏鑫于姗国网新源控股有限公司抽水蓄能技术经济研究院北京100053 山东泰山抽水蓄能有限公司山东泰安271000

有效的故障诊断方法不仅能快速、准确地辨别抽蓄机组故障类型,还能降低抽水蓄能电站的运行维护成本。针对相关向量机(RVM)有关参数的调整不当导致诊断结果受影响的问题,提出利用鹈鹕优化算法(POA)对相关向量机参数的选取进行优化,构建... 详细信息

有效的故障诊断方法不仅能快速、准确地辨别抽蓄机组故障类型,还能降低抽水蓄能电站的运行维护成本。针对相关向量机(RVM)有关参数的调整不当导致诊断结果受影响的问题,提出利用鹈鹕优化算法(POA)对相关向量机参数的选取进行优化,构建鹈鹕优化算法和相关向量机组合的分类模型(POA-RVM)。选取仙居抽水蓄能电站4台抽蓄机组在5种状态下的数据进行预处理和特征选取后构成故障样本集,并分别采用标准相关向量机,以及用遗传算法、粒子群算法和灰狼算法优化的相关向量机模型对这些故障样本进行分类。结果表明:与标准相关向量机,以及经遗传算法、粒子群算法和灰狼算法优化的相关向量机模型相比,POA-RVM模型有效提高了抽蓄机组故障诊断的准确率。

关键词：抽蓄机组故障诊断相关向量机鹈鹕优化算法安全运行仙居抽水蓄能电站

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Magnetic Sensing inside a Diamond Anvil Cell via Nitrogen-Vacancy Center Spins

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Chinese Physics Letters 2019年第8期36卷 74-79页

作者： Yan-Xing Shang Fang Hong Jian-Hong Dai Hui-yu Ya-Nan Lu En-Ke Liu xiao-Hui yu Gang-qin Liu Xin-yu Pan Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049 Songshan Lake Materials Laboratory Dongguan 523808 CAS Center of Excellence in Topological Quantum Computation Beijing 100190

The diamond anvil cell-based high-pressure technique is a unique tool for creating new states of matter and for understanding the physics underlying some exotic *** situ sensing of spin and charge properties under high pressure is crucially important but remains technically *** the nitrogen-vacancy(NV)center in diamond is a promising quantum sensor under extreme conditions,its spin dynamics and the quantum control of its spin states under high pressure remain *** this study,we demonstrate coherent control,spin relaxation,and spin dephasing measurements for ensemble NV centers up to 32.8 *** this in situ quantum sensor,we investigate the pressure-induced magnetic phase transition of a micron-size permanent magnet Nd2Fe14B sample in a diamond anvil cell,with a spatial resolution of ~2μm,and sensitivity of ~20 μT/Hz1/2. This scheme could be generalized to measure other parameters such as temperature,pressure and their gradients under extreme *** will be beneficial for frontier research of condensed matter physics and geophysics.

关键词： Magnetic Diamond Center