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Comparative Preliminary Evaluation of Agronomic and Quality Traits of New"Zhongtang"superior lines

Asian Agricultural Research 2024年第6期16卷 48-54页

作者： Zhengying CAO lishun PENG Yimei GAN Wenwei CAI Yuanli wu Institute of Tropical Bioscience and Biotechnology Chinese Academy of Tropical Agricultural SciencesHaikou 571101China sanya Research Institute Chinese Academy of Tropical Agricultural SciencesSanya 572024China

[Objectives]sugarcane is the most significant sugar cash crop in the tropical and subtropical regions of ***,it is notable for its narrow genetic basis,limited trait improvement,weak adaptability of varieties,and poor planting *** order to accelerate the process of sugarcane variety replacement and expand the basis of genetic variation,interspecific hybridization and multiple mutagenesis are the most effective methods for obtaining new sugarcane *** evaluation and identification of phenotypic traits of germplasm represents a significant analytical ***"Zhongtang"series of sugarcane varieties is distinguished by its high yield and high sugar *** sugarcane germplasms with excellent agronomic and quality traits can be identified and developed as breeding parents and new breeding lines through comprehensive evaluation of the existing germplasm.[Methods]A total of 181 new lines were selected through genetic origin and orientation,and evaluated and appraised for growth,yield,and economic *** data on 6 important agronomic and quality traits,including tillering,initial plant height,plant height,stem diameter,number of effective stems,and brix at maturity,were used to discover superior *** traits were evaluated during the two production seasons of the participant lines.[Results]A comprehensive evaluation of seedling growth traits and economic traits at maturity of the experimental lines identified 30 excellent new germplasms of *** the selected lines,1501 and 1701 exhibited superior agronomic and quality traits,rendering them suitable as parental lines for sugarcane breeding or breeding as new varieties.[Conclusions]The exemplary results obtained in this study provide a solid foundation for the improvement of sugarcane germplasm,with the goal of enhancing quality and *** findings are of great scientific and practical significance to the study of sugarcane yield and sugar-related gene

关键词： sugarcane Germplasm evaluation Yield Agronomic trait Economic trait

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1,3-氧硫戊环为受体的Hg^(2+)荧光探针的设计、合成及性能

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光谱学与光谱分析 2024年第7期44卷 1913-1917页

作者：梁庆祥周五吴爱斌舒文明余维初长江大学化学与环境工程学院化学系湖北荆州434023 长江大学非常规油气协同创新中心湖北荆州434023 油气田清洁生产与污染物控制湖北省工程研究中心湖北荆州434023

Hg^(2+)是毒性最强的重金属离子之一,会造成空气、土壤和水的污染,严重损害人体健康,开发有效的分析方法检测环境体系中的Hg^(2+)尤为重要。荧光探针因其灵敏度高、选择性好、响应速度快、可实时在线检测等优点,已广泛应用于Hg^(2+)检... 详细信息

Hg^(2+)是毒性最强的重金属离子之一,会造成空气、土壤和水的污染,严重损害人体健康,开发有效的分析方法检测环境体系中的Hg^(2+)尤为重要。荧光探针因其灵敏度高、选择性好、响应速度快、可实时在线检测等优点,已广泛应用于Hg^(2+)检测。以Hg^(2+)促进硫代缩醛的去保护反应设计合成了一种全新的以1,3-氧硫戊环为受体的开启型Hg^(2+)荧光探针[2-(pyren-1-yl)-1,3-oxathiolane,POX],通过^(1)H NMR、^(13)C NMR和HRMs对POX结构进行表征,考察了POX在CH_(3)CH_(2)OH/H_(2)O中对Hg^(2+)的选择性、竞争性、浓度滴定、pH滴定、时间依赖性、检出限和识别机理等。研究结果表明,POX可在较宽的pH范围内对Hg^(2+)快速识别,并表现出高度的选择性和灵敏度;向POX中加入Hg^(2+)后,在386 nm处出现明显的荧光发射峰,表明POX对Hg^(2+)呈现出显著的荧光“开启”效应,其识别过程几乎不受其他金属离子干扰;荧光滴定实验表明POX在Hg^(2+)浓度为0~6.5μmol·l^(-1)范围内具有良好的线性响应(R^(2)=0.9994),检出限为0.168μmol·l^(-1),在实际水样中检测Hg^(2+)的RsD小于2.92%。由于POX合成简单、原料易得且pH适用范围较广,可作为定性和定量检测环境中Hg^(2+)的潜在工具。

关键词：荧光探针 Hg^(2+) 1,3-氧硫戊环荧光开启

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Revenue management method and critical techniques of railway passenger transport

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Railway sciences 2024年第5期3卷 636-649页

作者： Xinghua shan Xiaoyan lv Jinfei wu shuo Zhao Junfeng Zhang Institute of Computing Technologies China Academy of Railway Sciences Corporation LimitedBeijingChina

Purpose–Revenue management(RM)is a significant technique to improve revenue with limited *** the macro environment of dramatically increasing transit capacity and rapid railway transport development in China,it is necessary to involve the theory of RM into the operation and decision of railway passenger ***/methodology/approach–This paper proposes the theory and framework of generalized RM of railway passenger transport(RMRPT),and the thoughts and methods of the main techniques in RMRPT,involving demand forecasting,line planning,inventory control,pricing strategies and information systems,are all studied and *** involved methods and techniques provide a sequential process to help with the decision-making for each stage of *** corresponding techniques are integrated into the information system to support practical businesses in railway passenger ***–The combination of the whole techniques devotes to railway benefit improvement and transit resource utilization and has been applied into the practical operation and organization of railway passenger ***/value–The development of RMRPT would provide theoretical and technical support for the improvement of service quality as well as railway benefits and efficiency.

关键词： Revenue management Railway passenger transport Demand forecasting line planning Inventory control Pricing strategy

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liOH-mediated crystallization regulating strategy enhancing electrochemical performance and structural stability of siO anodes for lithium-ion batteries

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Nano Research 2024年第9期17卷 8174-8183页

作者： Zhengqiu He Zewen Xu Yu long Jiexin Zhu Hao Yang Kuo Chen Qiang Zhou Ning Cao Xiaobo Wang Juan Wang Xiaojie Tan litao Wang luhai Wang shengbao He Mengdi Zhang Han Hu Mingbo wu state Key laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore school of Chemical sciences University of AucklandAuckland 1010New Zealand Petrochemical Research Institute Petro China Company Ltd.Beijing 102206China

silicon monoxide(siO)is widely recognized as a promising anode material for next-generation lithium-ion *** to its metastable amorphous structure,siO exhibits a highly complex degree of crystallization at the microscopic level,which significantly influences its electrochemical *** a consequence,accurately regulating the crystallization of siO,and further establishing the relationship between crystallinity and electrochemical performance are very critical for siO *** this article,carbon-coated siO materials with different crystallinity degrees were synthesized using lithium hydroxide monohydrate(liOH·H_(2)O)as a structural modifier to reveal this ***,moderate amount of liOH·H_(2)O addition results in the forming of an oxygen-rich shell,which effectively inhibits the inward migration of oxygen atoms on the siO surface and suppresses volume ***,the crystallinity of siO will gradually enhance and the crystalline phase appears with increasing the amount of liOH·H_(2)O,which will generate a deteriorative li+diffusion *** balancing the above two contradictions,a mass fraction of 1%liOH·H_(2)O for the additive yielded siO@C-1,characterized by optimal ***@C-1 demonstrates exceptional long-cycle stability with 74.8%capacity retention after 500 cycles at 1 A·g^(-1).Furthermore,it achieves a capacity retention of 52.2%even at a high density of 5 A·g^(-1).This study first reveals the relationship between siO crystallinity and electrochemical performance,which efficiently guides the design of high-performance siO anodes.

关键词： lithium-ion batteries siO anodes crystallinity regulation high rate long life

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Enrichment characteristics of normal-pressure marine shale gas in the complex tectonic zone: a case study of the lower Cambrian Niutitang Formation in northern Guizhou

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Journal of Earth science 2024年

作者： Wenjibin sun Zhonghu wu Yujun Zuo Chao Pan Hao liu Baofeng lan Jianyun lin Bin Chen Qinggang Chen Guizhou Energy Industry Research Institute Co.， ltd Mining College， Guizhou University College of Resource and Environmental Engineering， Guizhou University College of Civil Engineering， Guizhou University

The lower Cambrian Niutitang Formation is a crucial stratum for the exploration of normal-pressure marine shale gas in southern China， with great development potential. To research the normal-pressure shale gas accumulation of the Niutitang Formation in the complex tectonic zone， the shale cores in northern Guizhou were subjected to X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-sEM) observation， and tests were conducted to determine total organic content (TOC)， bitumen reflectance， and nitrogen isotopes. The results indicate that the equivalent vitrinite reflectance of cores varies from 2.30% to 3.73%， and the TOC content of cores varies from 3.8% to 7.8%. The total gas content of three wells in northern Guizhou is 0.5 m3/t， 0.3 m3/t， and 1.4 m3/t， respectively. The TOC content of the shale in the syncline structure is higher than that of the shale in the anticline structure. Nitrogen in shale gas originates primarily from the thermal ammoniation of organic matter， the atmosphere， and the deep crust. shale gas preservation is favourable in regions with a large range of lifting， and small lifting differences. The syncline is broad and gentle with few faults have better gas accumulation conditions. The Niutitang Formation in the residual syncline of the study area has better gas content than that of other structures. Exploration of shale gas accumulation sweet spots in northern Guizhou should focus on the broad-gentle synclines with minimal changes in stratigraphic lifting， few faults， and no hydrothermal activity at the edges of paleo-uplifts.

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人工神经网络和电阻抗谱法压电材料快速表征

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压电与声光 2024年第2期46卷 234-240页

作者：向辉吴校生上海交通大学微米纳米加工技术全国重点实验室上海200240 上海交通大学电子信息与电气工程学院上海200240

压电材料作为重要的功能材料,广泛应用于社会的各领域,但其弹性常数的偏差会导致应用过程中出现错误的设计,弹性常数的正确表征对压电器件的正确设计尤为重要。与其他测量方法相比,电阻抗谱仅需要阻抗分析仪即可实现测量,通过测量阻抗... 详细信息

压电材料作为重要的功能材料,广泛应用于社会的各领域,但其弹性常数的偏差会导致应用过程中出现错误的设计,弹性常数的正确表征对压电器件的正确设计尤为重要。与其他测量方法相比,电阻抗谱仅需要阻抗分析仪即可实现测量,通过测量阻抗谱反演获得压电材料的弹性常数。传统电阻抗谱法通过不断修正材料参数,使得测量阻抗谱和计算阻抗谱最大程度吻合,该过程需要多次迭代,计算量大,耗时较长。该文提出采用神经网络建立阻抗谱到弹性常数的正向模型,测量得到阻抗谱后仅需一次正向计算即可得到弹性常数。使用Comsol和Matlab联合仿真建立数据集,引入丢弃法避免模型过拟合,利用Pytorch建立模型,经过训练后,最大谐振频率偏差从初始2.8%降至0.8%。该技术为压电材料弹性常数精密测量提供可靠的理论与实践途径。

关键词：压电材料表征电阻抗谱法人工神经网络弹性常数矩阵

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Depositional model of the Member Deng-2 marginal microbial mound-bank complex of the Dengying Formation in the southwestern sichuan Basin, sW China: Implications for the Ediacaran microbial mound construction and hydrocarbon exploration

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Petroleum science 2024年第2期21卷 806-822页

作者： Jin-Min song Xin Jin Zhong luo shu-Gen liu shao-Bo liu Xing-Zhi Ma Zhi-wu li Xue-song lu ling-li Zhao Ke-Ran li Jia-Xin Ren li-Zhou Tian Hao-shuang Deng state Key laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Xihua University Chengdu610039SichuanChina

Recent advances in hydrocarbon exploration have been made in the Member Deng-2 marginal microbial mound-bank complex reservoirs of the Dengying Formation in the western sichuan Basin, sW China,where the depositional process is regarded confusing. The microfacies, construction types, and depositional model of the Member Deng-2 marginal microbial mound-bank complex have been investigated using unmanned aerial vehicle photography, outcrop section investigation, thin section identification,and seismic reflections in the southwestern sichuan Basin. The microbialite lithologic textures in this region include thrombolite, dendrolite, stromatolite, fenestral stromatolite, spongiostromata stone,oncolite, aggregated grainstone, and botryoidal grapestone. Based on the comprehensive analysis of“depositional fabrics-lithology-microfacies”, an association between a fore mound, mound framework,and back mound subfacies has been proposed based on water depth, current direction, energy level and lithologic assemblages. The microfacies of the mound base, mound core, mound flank, mound cap, and mound flat could be recognized among the mound framework subfacies. Two construction types of marginal microbial mound-bank complex have been determined based on deposition location, mound scale, migration direction, and sedimentary facies association. Type Jinkouhe microbial mound constructions(TJMMCs) develop along the windward margin owing to their proximity to the seaward subfacies fore mound, with a northeastwardly migrated microbial mound on top of the mud mound,exhibiting the characteristics of large-sized mounds and small-sized banks in the surrounding area. Type E'bian microbial mound constructions(TEMMCs) primarily occur on the leeward margin, resulting from the presence of onshore back mound subfacies, with the smaller southwestward migrated microbial mounds existing on a thicker microbial flat. The platform margin microbial mound depositional model can be correlated with certain late

关键词： sichuan Basin The Member Deng-2 Marginal microbial mound-bank complex Depositional model Exploration implications

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CssC Makes a Good start

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船舶经济贸易 2024年第2期 58-63页

作者： liu Zhiliang wu Xiuxia Kuang Zhanting He Baoxin Zuo Chunli 不详

In 2024,member units of the China state shipbuilding Corporation(CssC),with the momentum that the beginning is a decisive battle and the start is a sprint,have actively implemented the concept of"winning in three aspects",constantly improved the value creation ability,and striven to"get off to a good start"and run the first race of the Year.

关键词： momentum constantly creation

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Walnut peptide and ginseng Rg1 co-treatment prevents the loss of neurons and cognitive decline in mouse model with memory impairment

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Food science and Human Wellness 2024年

作者： Junxi Fu Kuzdeuova Damira Wentian song Weijia li li Fang Yue leng Chunlei liu Dan wu Weihong Min College of Food science and Engineering， Jilin Agricultural University state Key laboratory of subtropical silviculture， Zhejiang A&F University College of Food and Health， Zhejiang A&F University

In study， we investigated the effect of treatment with combination of < 3 kDa + Rg1 on scopolamine-induced cognitive impairment in mice and the mechanism of BDNF/TrKB/CREB signaling pathway in PC12 cells is regulated...

In study， we investigated the effect of treatment with combination of scopolamine-induced cognitive impairment in mice and the mechanism of BDNF/TrKB/CREB signaling pathway in PC12 cells is regulated. In behavioral experiments， lity of mice. Treatment with significantly regulated the function of neurotransmitters and effectively improved the morphology of the neurons determined by H&E， Nissl， and Golgi staining. Additionally， immunohistochemistry showed that the significantly decreased AChE activity and increased ChAT content in the hippocampus. The treatment upregulated VAChT， activated the BDNF/TrKB/CREB signaling pathway， improved the remodeling of dendritic spines， and enhanced cholinergic functions. In the scopolamine-induced PC12 cells， combination treatment increased Trx-1 expression after administering TrKB and activated signaling pathway. The results showed combination of signaling pathway by regulating function of neurotransmitters and enhanced cholinergic function to decrease cognitive impairment.

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南非人类学两种范式的冲突与融合

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中南民族大学学报（人文社会科学版） 2024年第4期44卷 134-142,221页

作者：王昊午中国社会科学院民族学与人类学研究所北京100081

南非人类学研究受到了来自英国和德国的两种不同学术传统的影响,围绕这两种传统形成了两种不同的分支:以英语为主要媒介的社会人类学(social anthropology)和使用阿非利卡语的阿非利卡民族学(volkekunde)。这两种学术传统不仅表现出了... 详细信息

南非人类学研究受到了来自英国和德国的两种不同学术传统的影响,围绕这两种传统形成了两种不同的分支:以英语为主要媒介的社会人类学(social anthropology)和使用阿非利卡语的阿非利卡民族学(volkekunde)。这两种学术传统不仅表现出了研究关注点以及研究方法、理论上的差异,学科的价值取向也渐行渐远。社会人类学强调普遍性,倾向于自由主义,反对殖民与种族隔离;阿非利卡民族学强调文化特殊性,并受到阿非利卡民族主义的裹挟,成为种族隔离制度的思想与理论来源。这些差异最终导致两个学科分支经历了不同的发展轨迹,走向了不同命运。

关键词：人类学南非学科史种族隔离

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