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Isotope constraints on seasonal dynamics of nitrogen in Zhanjiang Bay, a typical mariculture bay in South China

Acta oceanologica Sinica 2024年第6期43卷 60-70页

作者： Chunqing Chen qibin l.o Fajin Chen Guangzhe Jin Jiacheng li Qingmei Zhu College of ocean and Meteorology Guangdong Ocean UniversityZhanjiang 524088China School.of Chemistry and Environment Guangdong Ocean UniversityZhanjiang 524088China Key laboratory for Coastal.ocean Variation and Disaster Prediction Guangdong Ocean UniversityZhanjiang 524088China Key laboratory of Climate Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong ProvinceGuangdong Ocean UniversityZhanjiang 524088China

Eutrophication in coastal waters has been increasing remarkably,severely impacting the water quality in mariculture *** this study,we conducted multiple isotopic measurements on suspended particulate nitrogen(δ^(15)N-PN) and dissolved nitrate(δ^(15)N-No_(3)^(-)and δ^(18)o-No_(3)^(-)) in Zhanjiang Bay,a typical mariculture bay with a high level.of eutrophication in South China,to investigate the changes in nitrogen sources and their cycling between the rainy and dry *** the rainy season,the study found no significant relation between δ^(15)NPN and δ^(15)N-No_(3)^(-)due to the impact of heavy rainfall and terrestrial *** the upper bay,a slight nitrate loss and slightly higher δ_(15)N-No_(3)^(-)and δ^(18)o-No_(3)^(-)values were observed,attributed to intense physical sedimentwater *** some fluctuations,nitrate concentrations in the lower bay mainly aligned with the theoretical mixing line during the rainy season,suggesting that nitrate was primarily influenced by terrestrial erosion and that nitrate isotopes resembled the ***,the isotopic values of nitrate can be used for source apportionment in the rainy *** results indicated that soil nitrogen(36%) and manure and sewage(33%) were the predominant nitrogen sources contributing to nitrogen loads during this *** contrast,the dry season saw a deficient ammonium concentration(ol/l) in the bay,due to nearly complete consumption by phytoplankton during the red tide ***,the significant loss of nitrate and simultaneous increase in the stable isotopes of dissolved and particulate nitrogen suggest a strong coupling of assimilation and mineralization during the dry *** active biogeochemical processes during the dry season may be related to decreased runoff and increased water retention ***,our study illustrated the major seasonal nitrogen sources and their dynamics in Zhanjiang B ay,providing valuable insights for formulati

关键词： nitrogen stable nitrogen isotopes biogeochemical processes eutrophication Zhanjiang Bay

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光热协同甲醇水蒸气重整制氢实验和微观机理研究

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西安交通大学学报 2024年第1期58卷 81-88页

作者：闫翔昱吕布楚刘启斌西安交通大学动力工程多相流国家重点实验室西安710049 中国科学院工程热物理研究所北京100190 中国科学院大学北京100049

针对太阳能光热化学甲醇重整制氢中光热耦合效应及微观机理尚不清楚的问题,采用光热化学和热化学反应对比的研究方式,与微观实验相结合,研究了光热化学甲醇重整中光和热的耦合效应,探究了光和热在微观产物转化中的反应路径。研究结果表... 详细信息

针对太阳能光热化学甲醇重整制氢中光热耦合效应及微观机理尚不清楚的问题,采用光热化学和热化学反应对比的研究方式,与微观实验相结合,研究了光热化学甲醇重整中光和热的耦合效应,探究了光和热在微观产物转化中的反应路径。研究结果表明:在较低温度下,光对氢气产率的提升具有促进作用,当其与热化学达到相同氢气产率时,光热化学反应温度降低,造成这种现象的原因是光促进了水的分解、吸附态HCoo*的生成以及碳酸盐的分解,其中水在反应中的作用通过不同水醇比的实验得到了进一步验证;随着温度的升高,固定辐照度下光的促进作用逐渐降低,这是因为光对碳酸盐物质分解的促进作用随温度升高而减弱。研究阐明了光和热的耦合效应,分析了对应的微观机理,为理解光热协同机理提供了理论基础。

关键词：光热协同甲醇重整制氢微观机理

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Histological and single-nucleus transcriptome analyses reveal the specialized functions of ligular sclerenchyma cells and key regulators of leaf angle in maize

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Molecular Plant 2024年第6期17卷 920-934页

作者： qibin Wang Qiuyue Guo Qingbiao Shi Hengjia Yang Meiling liu Yani Niu Shuxuan Quan Di Xu Xiaofeng Chen laiyi li Wenchang Xu Fanying Kong Haisen Zhang Pinghua li Bosheng li Gang li State Key laboratory of Wheat Improvement College of Life SciencesShandong Agricultural UniversityTai’an 271018China Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agriculture Sciences in WeifangWeifangShandong 261325China State Key laboratory of Wheat Improvement College of AgronomyShandong Agricultural UniversityTai’an 271018China

leaf angle(lA)is a crucial factor that affects planting density and yield in ***,the regulatory mechanisms underlying lA formation remain largely *** this study,we performed a comparative histological analysis of the ligular region across various maize inbred lines and revealed that lA is significantly influenced by a two-step regulatory process involving initial cell elongation fol.owed by subsequent lignification in the ligular adaxial sclerenchyma cells(SCs).Subsequently,we performed both bulk and single-nucleus RNA sequencing,generated a comprehensive transcriptomic atlas of the ligular region,and identified numerous genes enriched in the hypodermal cells that may influence their specialization into ***,we functionally characterized two genes encoding atypical basic-helix-l.op-helix(bHlH)transcription factors,bHlH30 and its homolog bHlH155,which are highly expressed in the elongated adaxial *** analyses revealed that bHlH30 and bHlH155 positively regulate lA expansion,and molecular experiments demonstrated their ability to activate the transcription of genes involved in cell elongation and lignification of *** findings highlight the specialized functions of ligular adaxial SCs in lA regulation by restricting further extension of ligular cells and enhancing mechanical *** transcriptomic atlas of the ligular region at single-nucleus resolution not only deepens our understanding of lA regulation but al.o enables identification of numerous potential targets for optimizing plant architecture in modern maize breeding.

关键词： planting specialized angle

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Phytochrome B interacts with lIGUlElESS1 to control plant architecture and density tolerance in maize

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Molecular Plant 2024年第8期17卷 1255-1271页

作者： Qingbiao Shi Ying Xia qibin Wang Kaiwen lv Hengjia Yang lianzhe Cui Yue Sun Xiaofei Wang Qing Tao Xiehai Song Di Xu Wenchang Xu Xingyun Wang Xianglan Wang Fanying Kong Haisen Zhang Bosheng li Pinghua li Haiyang Wang Gang li State Key laboratory of Wheat Improvement College of Life SciencesShandong Agricultural UniversityTai'an 271018China State Key laboratory of Wheat Improvement College of AgronomyShandong Agricultural UniversityTai'an 271018China Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agricultural Sciences at WeifangWeifangShandong 261000China Guandong laboratory for lingnan Modern Agriculture State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesSouth China Agricultural UniversityGuangzhou510642China

over the past few decades,significant improvements in maize yield have been largely attributed to increased plant density of upright hybrid varieties rather than increased yield per ***,dense planting triggers shade avoidance responses(SARs)that optimize light absorption but impair plant vigor and performance,limiting yield improvement through increasing plant *** this study,we demonstrated that high-density-induced leaf angle narrowing and stem/stalk elongation are largely dependent on phytochrome B(phyB1/B2),the primaryphotoreceptor responsible for perceiving red(R)and far-red(FR)light in *** found that maize phyB physically interacts with the lIGUlElESS1(lG1),a classical key regulator of leaf angle,to coordinately regulate plant architecture and density *** abundance of lG1 is significantly increased by phyB under high R:FR light(low density)but rapidly decreases under low R:FR light(high density),correlating with variations in leaf angle and plant height under various *** addition,we identified the homeobox transcription factor HB53 as a target co-repressed by both phyB and lG1 but rapidly induced by canopy *** and cellular analyses showed that HB53 regulates plant architecture by controlling the elongation and division of ligular adaxial and abaxial *** together,these findings uncover the phyB-lG1-HB53 regulatory module as a key molecular mechanism governing plant architecture and density tolerance,providing potential genetic targets for breeding maize hybrid varieties suitable for high-density planting.

关键词： maize phytochrome B lIGUlElESS1 HB53 leaf angle density tolerance

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人才培养视域下高职院校知识产权的转化探究

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成才之路 2024年第26期 57-60页

作者：程启斌贵阳职业技术学院贵州贵阳550000

在“双高”建设背景下,知识产权转化作为高职院校人才培养和科技创新的重要环节之一,能够促进高质量教育和产业发展的有机结合,能够推动地方经济和社会发展,增强国家综合实力。高职院校应基于人才培养要求,了解产业发展态势,把握市场实... 详细信息

在“双高”建设背景下,知识产权转化作为高职院校人才培养和科技创新的重要环节之一,能够促进高质量教育和产业发展的有机结合,能够推动地方经济和社会发展,增强国家综合实力。高职院校应基于人才培养要求,了解产业发展态势,把握市场实际需求,建立健全知识产权管理体系,加强知识产权的申请和保护,建立产学研合作平台,打造成果转化创新体系,构建资金支持和激励机制,营造良好的科技创新环境,实现知识产权转化的进一步发展。

关键词：人才培养 “双高”建设高职院校知识产权转化科技创新

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深度线索增强的全息视网膜投影显示

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液晶与显示 2024年第7期39卷 901-908页

作者：屠科锋孙菲王梓吕国强冯奇斌合肥工业大学仪器科学与光电工程学院光电技术研究院安徽合肥230009 安徽省高新技术发展中心(安徽省基础研究管理中心) 安徽合肥230088

全息视网膜投影显示(retinal projection display,RPD)具有大景深的特征,是能够缓解辐辏聚焦冲突(vergence accommodation conflict,VAC)的近眼显示技术之一。但是,景深过大会导致聚焦模糊的深度线索丢失。因此,提出了一种基于带限随机... 详细信息

全息视网膜投影显示(retinal projection display,RPD)具有大景深的特征,是能够缓解辐辏聚焦冲突(vergence accommodation conflict,VAC)的近眼显示技术之一。但是,景深过大会导致聚焦模糊的深度线索丢失。因此,提出了一种基于带限随机相位的RPD全息图计算方法,其通过在目标图像面引入带限随机相位控制进入瞳孔的光束宽度,从而达到控制景深范围并增强深度线索的目的。计算全息图并再现过程可分为3步:首先,根据目标图像所在深度及进入瞳孔时限制的光束宽度计算得到带限随机相位。第二步,目标图像乘以球面波相位及带限随机相位后通过一步菲涅尔衍射获得全息图。最后,准直的激光光源照射于加载全息图的空间光调制器,再现的物光汇聚于人眼瞳孔处实现深度线索增强的全息RPD。实验结果表明,基于带限随机相位的全息RPD不仅具有低散斑、高再现质量等优势,而且能够灵活控制目标图像的景深,为观察者提供聚焦模糊的深度线索。

关键词： 3D显示全息显示视网膜投影显示带限随机相位

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Simultaneous denitrification and denitrifying phosphorus removal in a full-scale anoxic–oxic process without internal recycle treating low strength wastewater

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Journal.of Environmental Sciences 2016年第1期28卷 175-183页

作者： qibin Wang Qiuwen Chen State Key laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Center for Eco-Environmental Research Nanjing Hydraulic Research Institute

Performance of a full-scale anoxic-oxic activated sludge treatment plant（4.0×10-5 m-3/day for the first-stage project） was fol.owed during a *** plant performed well for the removal.of carbon,nitrogen and phosphorus in the process of treating domestic wastewater within a temperature range of 10.8℃ to 30.5℃.Mass balance calculations indicated that CoD utilization mainly occurred in the anoxic phase,accounting for 88.2% of total CoD *** nitrogen removal.occurred 13.71% in the anoxic zones and 78.77% in the aerobic *** contribution of anoxic zones to total nitrogen（TN） removal was 57.41%.Results indicated that nitrogen elimination in the oxic tanks was mainly contributed by simultaneous nitrification and denitrification（SND）.The reduction of phosphorus mainly took place in the oxic zones,51.45% of the total *** phosphorus removal was achieved biologically by 11.29%.Practical experience proved that adaptability to gradually changing temperature of the microbial populations was important to maintain the plant overall *** changes in temperature did not cause paralysis of the system just lower removal efficiency,which could be explained by functional redundancy of microorganisms that may compensate the adverse effects of temperature changes to a certain ***-oxic process without internal recycling has great potential to treat low strength wastewater（i.e.,TN 〈 35 mg/l） as well as reducing operation costs.

关键词： Wastewater treatment Biological nutrient removal Simultaneous nitrification and denitrification Denitrifying phosphorus removal

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MCM4作为增殖信号影响肺腺癌的免疫浸润和预后

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临床与病理杂志 2024年第2期44卷 169-182页

作者：金燕许斌宋启斌武汉大学人民医院肿瘤中心武汉430060

目的:微小染色体维持蛋白4(minichromosome maintenance protein 4,MCM4)是DNA复制起始和延伸阶段的调控因子。本研究旨在探究肺腺癌(lung adenocarcinoma,lUAD)中MCM4的表达与肿瘤微环境(tumor microenvironment,TME)中免疫细胞和分子的相关性,以及MCM4预测患者免疫治疗敏感性和预后的能力。方法:从癌症基因组图谱(The Cancer Genome Atlas,TCGA)、基因表达综合(Gene Expression omnibus,GEo)数据库中下载并筛选lUAD患者的转录组数据和临床数据进行分析。其中TCGA数据集的503例患者为训练集,GEo数据集的857例患者为验证集。采用TIMER(Tumor Immune Estimation Resource)数据库对MCM4在正常组织和肿瘤组织中的表达情况进行分析。将lUAD患者肿瘤样本划分为MCM4低表达组和MCM4高表达组,采用R软件分析lUAD患者MCM4表达与总生存期(overall survival.oS)的关系;采用京都基因与基因组数据库(Kyoto Encyclopedia of Genes and Genomes,KEGG)中的基因集进行基因富集分析,筛选与MCM4基因表达相关的生物学过程;采用肿瘤免疫功能障碍与排斥(tumor immune dysfunction and exclusion,TIDE)评分预测患者的免疫治疗的效果;评估lUAD患者TME的免疫评分、基质评分和ESTIMATE(estimation of stromal and immune cells in malignant tumor tissues using expression data)评分,分析MCM4表达与TME中免疫细胞、免疫检查点(immune checkpoint,ICs)之间的关系。收集武汉大学人民医院病理确诊为lUAD的穿刺或者手术切片60张(55张为lUAD的癌组织和癌旁组织,5张为正常肺组织)及临床病理资料,采用免疫组织化学染色法进行临床验证。结果:MCM4基因和蛋白质在肺正常组织和腺癌组织中差异表达。在训练集和验证集中,MCM4低表达组患者的oS均优于MCM4高表达组;MCM4均可以影响lUAD患者的预后;MCM4表达与卵母细胞减数分裂、细胞周期和DNA复制通路显著相关,且MCM4与Ki-67编码基因MKI67和增殖相关基因C1orf112均呈显著正相关;MCM4表达与TIDE评分均呈负相关,与ICs表达呈正相关,说明MCM4的表达可预测患者的免疫治疗效果;与MCM4低表达组比较,MCM4高表达组的肿瘤纯度均较高,基质细胞和免疫细胞比例均较低,且MCM4表达与CD8+T细胞均呈负相关,与Th2、骨髓来源抑制性细胞均呈显著正相关,说明肿瘤组织的MCM4高表达与患者预后不佳相关。泛癌分析结果表明:在33种肿瘤中,大部分肿瘤的MCM4表达与ICs、Th2细胞、调节性T细胞、程序性死亡受体1(programmed death-1,PD-1)、程序性死亡受体配体1(programmed death-ligand 1,PD-l1)的表达及PD-1-PD-l1评分均呈正相关,与CD8^(+)T细胞、NK细胞均呈负相关。临床数据验证结果表明:MCM4在肿瘤组织中的染色强度和阳性细胞占比高于肿瘤间质,肿瘤组织的MCM4表达水平高于正常组织;MCM4评分与Ki-67呈显著正相关。结论:MCM4作为增殖信号影响肺腺癌的免疫浸润和预后,且MCM4高表达与TME内抑制性免疫细胞浸润及免疫治疗获益概率升高相关。

关键词：微小染色体维持蛋白4 肺腺癌增殖免疫抑制预后

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考虑点云骨架特征的未知物体六自由度抓取

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合肥工业大学学报（自然科学版） 2024年第7期47卷 870-878页

作者：吴航谢远龙王书亭魏棋斌熊体凡华中科技大学机械科学与工程学院湖北武汉430074

针对机械臂在非结构化环境下对未知物体生成稳定抓取位姿困难的问题,文章提出一种基于点云骨架特征的未知物体六自由度抓取方法。首先,通过深度相机获取包含物体的场景单视角点云,并在物体表面随机采样得到初始采样点,设计考虑l1中值骨... 详细信息

针对机械臂在非结构化环境下对未知物体生成稳定抓取位姿困难的问题,文章提出一种基于点云骨架特征的未知物体六自由度抓取方法。首先,通过深度相机获取包含物体的场景单视角点云,并在物体表面随机采样得到初始采样点,设计考虑l1中值骨架提取的迭代移动采样算法,保证抓取点最终均匀排布在物体的骨架上;然后,利用骨架点的分布信息和骨架点周围点云的几何信息生成候选抓取位姿,根据抓取器与物体之间的位置关系,使用启发式评价函数评估抓取位姿,从而保证位姿的最优化采样;最后,对不同形状的物体进行仿真实验和实际抓取试验。测试结果表明,文章所提方法可以对常见物体生成稳定的抓取位姿,并能有效拓展到更多形状复杂的未知物体。

关键词：非结构化环境六自由度抓取点云骨架特征几何信息启发式评价函数

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Robust tensor decomposition via orientation invariant tubal nuclear norms

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Science China(Technological Sciences) 2022年第6期65卷 1300-1317页

作者： WANG AnDong ZHAo qibin JIN Zhong lI Chao ZHoU GuoXu School.of Automation Guangdong University of TechnologyGuangzhou 510006China School.of Computer Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Tensor learning Team RIKEN Center for Advanced Intelligence ProjectTokyo 103-0027Japan Key laboratory of Intelligent Perception and System for High-Dimensional Information Ministry of EducationNanjing 210094China Key laboratory of Intelligent Detection and the Internet of Things in Manufacturing Ministry of EducationGuangzhou 510006China

Aiming at recovering an unknown tensor(i.e.,multi-way array)corrupted by both sparse outliers and dense noises,robust tensor decomposition(RTD)serves as a powerful pre-processing tool for subsequent tasks like classification and target detection in many computer vision and machine learning ***,tubal nuclear norm(TNN)based optimization is proposed with superior performance as compared with other tensorial nuclear norms for tensor ***,one major limitation is its orientation sensitivity due to low-rankness strictly defined along tubal.orientation and it cannot simultaneously model spectral low-rankness in multiple *** this end,we introduce two new tensor norms called oITNN-o and oITNN-l to exploit multi-orientational spectral low-rankness for an arbitrary K-way(K≥3)*** further formulate two RTD models via the proposed norms and develop two al.orithms as the ***,we establish non-asymptotic error bounds which can predict the scaling behavior of the estimation *** on real-world datasets demonstrate the superiority and effectiveness of the proposed norms.

关键词： tensor recovery t-SVD estimation error tensor completion

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