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Transcriptomic and metabolomic analysis provides insights into lignin biosynthesis and accumulation and differences in lodging resistance in hybrid wheat

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Journal of Integrative Agriculture 2024年第4期23卷 1105-1117页

作者： Weibing Yang Shengquan zhang Qiling Hou Jiangang Gao Hanxia Wang Xianchao Chen Xiangzheng Liao Fengting zhang Changping Zhao zhilie Qin Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China Beijing Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat Beijing 100097China

The use of hybrid wheat is one way to improve the yield in the ***,greater plant heights increase lodging risk to some *** this study,two hybrid combinations with differences in lodging resistance were used to analyze the stem-related traits during the filling stage,and to investigate the mechanism of the difference in lodging resistance by analyzing lignin synthesis of the basal second internode(BSI).The stem-related traits such as the breaking strength,stem pole substantial degree(SPSD),and rind penetration strength(RPS),as well as the lignin content of the lodging-resistant combination(LRC),were significantly higher than those of the lodgingsensitive combination(LSC).The phenylpropanoid biosynthesis pathway was significantly and simultaneously enriched according to the transcriptomics and metabolomics analysis at the later filling stage.A total of 35 critical regulatory genes involved in the phenylpropanoid pathway were ***,42%of the identified genes were significantly and differentially expressed at the later grain-filling stage between the two combinations,among which more than 80%were strongly up-regulated at that stage in the LRC compared with *** the contrary,the LRC displayed lower contents of lignin intermediate metabolites than the *** results suggested that the key to the lodging resistance formation of LRC is largely the higher lignin synthesis at the later grain-filling ***,breeding strategies for synergistically improving plant height and lodging resistance of hybrid wheat were put forward by comparing the LRC with the conventional wheat applied in large areas.

关键词： gene expression lignin synthesis lodging-resistance hybrid wheat

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远程视频银行促进商业银行高质量发展

全国流通经济 2024年第12期 173-176页

作者：张志安徽省农村信用社联合社安徽合肥230001

远程视频银行作为商业银行数字化转型的重要途经之一,正在受到越来越多的关注。本文首先对远程视频银行的简介和行业现状进行简要概述,其次分析远程视频银行的优势作用和存在的问题,最后提出远程视频银行发展建议。研究认为,远程视频银... 详细信息

远程视频银行作为商业银行数字化转型的重要途经之一,正在受到越来越多的关注。本文首先对远程视频银行的简介和行业现状进行简要概述,其次分析远程视频银行的优势作用和存在的问题,最后提出远程视频银行发展建议。研究认为,远程视频银行有助于商业银行降本增效、增强服务体验、弥合“数字鸿沟”,进一步促进商业银行高质量发展,商业银行要顺应数字化时代发展趋势,从业务流程、业务规模、智能技术、安全防护、交互体验、人才队伍等方面加大研发和投入力度,加快远程视频银行创新布局,增强市场竞争力,监管部门也需要进一步明确监管规则,规范和引导远程视频银行健康发展。

关键词：远程视频银行数字化转型高质量发展

施工图联合审查中消防设计审查工作存在问题与对策建议

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建筑经济 2024年第S01期45卷 166-169页

作者：张智郑州市建筑设计研究院有限公司河南郑州450000

2019年住建部开始承接建设工程消防设计审查工作,依据建科规[2020]5号文件,实行施工图设计文件联合审查的,将建设工程消防设计的技术审查并入联合审查。但在运行过程中,由于施工图采用分专业审查,出现跨专业消防问题不能及时发现的情况... 详细信息

2019年住建部开始承接建设工程消防设计审查工作,依据建科规[2020]5号文件,实行施工图设计文件联合审查的,将建设工程消防设计的技术审查并入联合审查。但在运行过程中,由于施工图采用分专业审查,出现跨专业消防问题不能及时发现的情况。本文提出在原施工图审查流程中,针对消防设计增设总技术负责人及全面初审控制环节,解决跨专业审查不到位的问题,并对总负责人的技术能力评价及具体审查流程提出建议。

关键词：消防设计审查施工图联合审查技术总负责人消防审查流程

Review of the SiC LDMOS power device

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Journal of Semiconductors 2024年第8期45卷 4-17页

作者： Ziwei Hu Jiafei Yao Ang Li Qi Sun Man Li Kemeng Yang Jun zhang Jing Chen Maolin zhang Yufeng Guo College of Integrated Circuit Science and Engineering(Industry-Education Integration School) Nanjing University of Posts andT elecommunicationsNanjing 210023China National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing 210023China Nantong Institute of Nanjing University of Posts and Telecommunications Nantong 226000China

Silicon carbide(SiC),as a third-generation semiconductor material,possesses exceptional material properties that significantly enhance the performance of power *** SiC lateral double-diffused metal–oxide–semiconductor(LDMOS)power devices have undergone continuous optimization,resulting in an increase in breakdown voltage(BV)and ultra-low specific on-resistance(Ron,sp).This paper has summarized the structural optimizations and experimental progress of SiC LDMOS power devices,including the trench-gate technology,reduced surface field(RESURF)technology,doping technology,junction termination techniques and so *** paper is aimed at enhancing the understanding of the operational mechanisms and providing guidelines for the further development of SiC LDMOS power devices.

关键词： SiC LDMOS specific on-resistance breakdown voltage

节水灌溉下秸秆还田形式对黑土区稻田N_(2)O排放与产量的影响

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农业机械学报 2024年第4期55卷 280-289页

作者：薛里张忠学齐智娟韩羽徐丹张作合周欣东北农业大学水利与土木工程学院哈尔滨150030 东北农业大学农业农村部农业水资源高效利用重点实验室哈尔滨150030 东北农业大学文理学院哈尔滨150030 绥化学院农业与水利工程学院绥化152061

为探寻不同灌溉模式下秸秆还田形式对黑土区稻田N_(2)O排放与产量的影响,于2023年进行大田试验,设置常规灌溉(F)与控制灌溉(C)两种灌溉模式,同时设置秸秆还田(S)、秸秆炭化为生物炭还田(B)、秸秆过牛腹为有机肥还田(O)3种还田形式,以及... 详细信息

为探寻不同灌溉模式下秸秆还田形式对黑土区稻田N_(2)O排放与产量的影响,于2023年进行大田试验,设置常规灌溉(F)与控制灌溉(C)两种灌溉模式,同时设置秸秆还田(S)、秸秆炭化为生物炭还田(B)、秸秆过牛腹为有机肥还田(O)3种还田形式,以及秸秆不还田(N)作为对照组,共计8个处理。分析不同灌溉模式下秸秆还田形式对稻田N_(2)O排放通量与水稻产量的影响,测定了水稻各生育期稻田土壤铵态氮含量、硝态氮含量、微生物氮含量、pH值,并分析了N_(2)O排放总量和水稻产量与土壤环境因子之间的关系。结果表明:除返青期外,与秸秆不还田处理相比,秸秆还田与有机肥还田处理土壤铵态氮含量、硝态氮含量、微生物氮含量均表现为增加。相同秸秆还田形式下,控制灌溉模式下各处理生育期内土壤平均铵态氮含量、硝态氮含量较常规灌溉模式高36.23%~60.82%、14.16%~19.61%。同时,秸秆还田与生物炭还田能提高稻田土壤pH值。相同灌溉模式下,与秸秆不还田处理相比较,秸秆还田与有机肥还田处理N_(2)O排放总量分别增加14.44%~24.09%、8.22%~14.44%,生物炭还田处理N_(2)O排放总量降低14.31%~23.90%。生物炭还田与有机肥还田各处理水稻产量提高3.28%~13.07%,其中控制灌溉模式下生物炭还田处理产量最高。综上所述,控制灌溉下生物炭还田可以实现节水、增产、减排的目的。

关键词：水稻产量 N_(2)O排放黑土区稻田灌溉模式秸秆还田形式

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排渗失效下尾矿库溃坝三维模型试验研究

水利学报 2024年第6期55卷 735-743页

作者：张力霆马文君刘雅帆张少雄周玎李鑫石家庄铁道大学河北石家庄050043 河北省应急管理科学研究院河北石家庄050000 石家庄职业技术学院河北石家庄050000 铜源国际工程设计研究有限公司河北秦皇岛066000

针对尾矿库渗透破坏模式,为克服二维试验槽边壁效应对模型渗流走向及溃决位置的影响,本文以某尾矿库为原型,基于自主设计的三维尾矿库溃坝模型试验平台,进行了排渗设施失效诱发的尾矿库溃坝模型试验研究,揭示了该尾矿库的溃决模式及溃... 详细信息

针对尾矿库渗透破坏模式,为克服二维试验槽边壁效应对模型渗流走向及溃决位置的影响,本文以某尾矿库为原型,基于自主设计的三维尾矿库溃坝模型试验平台,进行了排渗设施失效诱发的尾矿库溃坝模型试验研究,揭示了该尾矿库的溃决模式及溃决机理。结果表明:(1)排渗失效导致的溃坝呈现局部流土破坏-坝体累计变形-深层滑动面发展贯通-整体突发失稳的渐进伴突发型溃决演化模式;(2)坝体孔隙水压力骤变是坝体发生滑动破坏的关键响应指标,预示着坝体将在短时间内由滑动体前后缘局部散浸软化、流土、塌陷转变为大范围溃决,可作为坝体溃决事故的前兆信息;(3)排渗失效导致的尾矿库溃坝过程具有渐进性和突发性的特点,发生散浸与流土破坏的过程时间较长,发生深层滑动和溃决的时间短暂,该特征可为尾矿库渗透破坏隐患治理及坝体溃决应急响应提供参考。研究结果对尾矿库溃坝的灾害预防具有重要的现实意义。

关键词：尾矿库模型试验孔隙水压力流土破坏坝体溃决

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转子叶顶间隙值及改型对压气机性能影响的数值模拟

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航空发动机 2024年第4期50卷 58-67页

作者：李志鹏张国臣张成烽徐志晖曹志远沈阳航空航天大学航空发动机学院沈阳110136 西北工业大学动力与能源学院西安710129

为了分析转子叶顶间隙值和改型对压气机性能的影响,以典型轴流跨声速压气机NASA stage 35为对象,对不同叶顶间隙值的压气机进行数值模拟。结果表明:叶顶间隙增大并且泄漏流强度提高,会导致脱体激波位置前移,转子吸力面激波作用位置后移... 详细信息

为了分析转子叶顶间隙值和改型对压气机性能的影响,以典型轴流跨声速压气机NASA stage 35为对象,对不同叶顶间隙值的压气机进行数值模拟。结果表明:叶顶间隙增大并且泄漏流强度提高,会导致脱体激波位置前移,转子吸力面激波作用位置后移,前缘溢流现象减弱,叶尖泄漏涡与激波作用增强,间隙区域涡量增加,靠近前缘的涡核向下游移动,但附面层与激波之间的作用减弱;不同叶顶间隙值的压气机失速机制不同,在小间隙下压气机失速是由叶尖泄漏涡和转子吸力面附面层分离共同作用引起的,在大间隙下压气机失速是由叶尖泄漏涡引起的;在研究的变化范围内,叶顶间隙值为0.50τ时,压气机性能最好,峰值效率和稳定裕度分别提高了0.16%和2.39%;将最优间隙改型成平行扩张式和正弦波间隙后,压气机性能提高,脱体激波后移,叶尖泄漏涡与激波作用程度减弱,转子吸力面附面层分离减弱,改型间隙能够减少叶片制作材料,减轻发动机质量。

关键词：叶尖泄漏流激波前缘溢流附面层分离叶顶间隙改型转子压气机航空发动机

Petrogenesis and Tectonic Implications of the Paleoproterozoic A-Type Granites in the Xiong’ershan Area along the Southern Margin of the North China Craton

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Journal of Earth Science 2024年第2期35卷 416-429页

作者： Jinhong Xu Yuping Jiang Shuli Hu Zhengwei zhang Chengquan Wu Chaofei Zheng Xiyao Li Ziru Jin Sensen zhang Yatao Zhou State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang550081China University of Chinese Academy of Sciences Beijing100049China Henan Province Non-ferrous Metals Geological Mineral Resources Bureau Zhengzhou450053China Jiangmen Land Market Monitoring Center Jiangmen 529000China

Paleoproterozoic A-type granites are widely distributed in the southern margin of the North China Craton(SNCC),providing important information for understanding the Paleoproterozoic tectonic regimes in this *** paper reports newly obtained whole-rock compositions and zircon U-Pb ages for the Tieluping syenogranite porphyry(TLP)and Huoshenmiao alkali granite porphyry(HSM)in the *** from the TLP and HSM have U-Pb ages of 1805±12 and 1792±14 Ma,*** ages are taken to date the emplacement of these *** had high total alkali contents(K_(2)O+Na_(2)O>7.13 wt.%),with high 10000×Ga/Al ratios(3.06–3.41)and Zr+Y+Nb+Ce values(709 ppm–910 ppm)as well as high zircon saturation temperatures(864–970℃),indicative of A-type granite *** Y/Nb(1.75–3.32),Ce/Nb(7.72–9.72),and Yb/Ta(2.89–5.60)ratios suggested that TLP and HSM belonged to the A2-type *** negative whole rockε_(Nd)(t)values(−8.4 to−6.6)and negative zirconε_(Hf)(t)values(−15.9 to−6.3)confirmed that TLP and HSM were likely generated by the partial melting of an ancient continental ***εHf(t)(−7.4 to+4.0)values of inherited zircons in the TLP suggested that they were derived from the partial melting of Archean basement *** the geochemical similarity of the 1.80 Ga A-type granitoids in the SNCC,we propose that the TLP and HSM were formed in a post-collisional regime that was likely associated with the break-off of the Paleoproterozoic subducted *** of the asthenosphere provided huge heat to generate the regional 1.80 Ga A-type granite in the SNCC.

关键词： Paleoproterozoic A-type granite Post-collisional North China Craton tectonic geochemistry

Design of dual-functional protic porous ionic liquids for boosting selective extractive desulfurization

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Petroleum Science 2024年第4期21卷 2817-2829页

作者： Jin-Rui zhang Jie Yin Jing He Hong-Shun Ran Wei Jiang Hong-Ping Li Wen-Shuai Zhu Hua-Ming Li Ming zhang School of the Environment and Safety Engineering & Institute for Energy Research Jiangsu University School of Chemistry and Chemical Engineering Jiangsu University

Porous ionic liquids have demonstrated excellent performance in the field of separation, attributed to their high specific surface area and efficient mass transfer. Herein, task-specific protic porous ionic liquids(PPILs) were prepared by employing a novel one-step coupling neutralization reaction strategy for extractive desulfurization. The single-extraction efficiency of PPILs reached 75.0% for ***, adding aromatic hydrocarbon interferents resulted in a slight decrease in the extraction efficiency of PPILs(from 45.2% to 37.3%, 37.9%, and 33.5%), indicating the excellent extraction selectivity of PPILs. The experimental measurements and density functional theory calculations reveal that the surface channels of porous structures can selectively capture dibenzothiophene by the stronger electrophilicity(Eint(HS surface channel/DBT)=-39.8 kcal mol-1), and the multiple extraction sites of ion pairs can effectively enrich and transport dibenzothiophene from the oil phase into PPILs through π...π, C-H...π and hydrogen bonds interactions. Furthermore, this straightforward synthetic strategy can be employed in preparing porous liquids, offering new possibilities for synthesizing PPILs with tailored functionalities.

关键词： Protic porous ionic liquids Extractive desulfurization Selectivity Density functional theory