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Genetic Structure and Diversity of Parental Cultivars Involved in China Mainland Sugarcane Breeding Programs as Inferred from DNA Microsatellites

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Journal of Integrative Agriculture 2012年第11期11卷 1794-1803页

作者： qi Yong-wen PAN Yong-bao LAO Fang-ye ZHANG Chui-ming FAN Li-na HE Hui-yi LIU Ruin WANG qin-nan LIU Shao-mou LIU Fu-ye LI qi-wei DENG Hai-hua Guangdong Key Laboratory of Sugarcane Improvement and Biorefinery Guangzhou Sugarcane Industry Research Institute Guangzhou 510316 P.R.China USDA-ARS Mid-South Area Sugarcane Research Laboratory Houma 70360 USA

To understand genetic structure and diversity of parental cultivars involved in China Mainland sugarcane breeding programs, 92 elite parents and 4 wild relatives were genotyped with 1. microsatellite DNA markers. The genetic similarity （GS） values among the cultivars ranged from 0.346 to 0.960 with an average of 0.533. Among the introduced cultivars, India accessions had the closest genetic distance to China Mainland accessions （0.447）, while Australia accessions have the furthest distance （0.503）. A comparison of allelic diversity among geographical origins showed that there were 22 China Mainland specific alleles, of which 28% were derived from native S. spontaneaum germplasm in China. Model-based genetic structure, clustering, and principal components analyses consistently revealed there were five groups within the 96 accessions. Groups 1. 2, 4, and 5 consisted of all cultivars and group 3 only contained wild germplasm. Group 2 was characterized as the Introduction group with 46 cultivars predominantly introduced from Australia, Taiwan of China, India, and USA. Groups 1. 4, and 5 consisted of cultivars mostly originated from China Mainland, defined as the Complex group, Yacheng lines group, and F1.4/CP72-1.1. group, respectively, upon their pedigree. By understanding the genetic relationships among the parental cultivars, breeders can gain a rational basis for expanding the gene pool and select the best parental accessions for crossing.

关键词： genetic diversity microsatellite DNA marker population structure sugarcane

Dissolution and Deformation Characteristics of Limestones Containing Different Calcite and Dolomite Content Induced by CO_(2)-Water-Rock Interaction

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Acta Geologica Sinica(English Edition) 2023年第3期97卷 956-971页

作者： chen Bowen LI qi TAN Yongsheng Ishrat Hameed ALVI State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China

To investigate the impacts of mineral composition on physical and mechanical properties of carbonate rocks,limestone specimens containing different contents in calcite and dolomite are selected to perform CO_(2)-water-rock reaction *** X-ray Diffraction(XRD) and Nuclear Magnetic Resonance(NMR) are carried out to examine the change characteristics of mineral dissolution and pore structure after *** core flooding experiments with Fiber Bragg gratings are implemented to examine the stress sensitivity of carbonate *** results show that the limestones containing pure calcite are more susceptible to acid dissolution compared to limestone containing impure *** calcite content in pure limestone decreases as the reaction *** dissolution of dolomite leads to the formation of calcite in impure *** dissolution leads to the formation of macropore and flow channels in pure limestone,while the effects of impure dolomite in impure limestone results in mesopore *** confining pressure is lower than 1. MPa,pure limestones demonstrate higher strain sensitivity coefficients compared to impure limestone containing dolomite after *** confining pressure exceeds 1. MPa,the strain sensitivity coefficients of both pure and impure limestones become almost equal.

关键词： CO_(2) geological storage carbonate rocks CO_(2)-water-rock interaction deformation response Fiber Bragg gratings sensors

Single-atom Pd anchored in the porphyrin-center of ultrathin 2D-MOFs as the active center to enhance photocatalytic hydrogen-evolution and NO-removal

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Chinese Chemical Letters 2024年第9期35卷 364-368页

作者： Xingyan Liu Chaogang Jia Guangmei Jiang chenghua Zhang Mingzuo chen Xiaofei Zhao Xiaocheng Zhang Min Fu Siqi Li Jie Wu Yiming Jia Youzhou He Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China School of Pharmacy North Sichuan Medical CollegeNanchong 637100China Carbon Neutrality Technology Application Research Center College of River and Ocean EngineeringChongqing Jiaotong UniversityChongqing 400074China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National Local Joint Engineering Research Center for Road Engineering and Disaster Prevention and Reduction Technology in Mountainous Areas China Merchants Chongqing Communications Technology Research and Design Institute Co.Ltd.Chongqing 400067China Chongqing Culture Relics and Archaeology Research Institute Chongqing 400013China

Single-atom catalysts were widely used to treat atmospheric pollution and alleviate energy crises through ***,how to prevent the aggregation of single atoms during the preparation and catalytic processes remained a great ***,a novel ultrathin two-dimensional porphyrin-based single-atom photocatalyst Ti-MOF(abbreviated as TMPd)obtained through a simple hydrothermal synthesis strategy was used for photocatalytic hydrogen evolution and NO removal,in which the singleatom Pd tightly anchored in the center of porphyrin to ensure single-atom Pd stable *** with most reported MOFs-based photocatalysts,the TMPd showed an excellent hydrogen evolution rate(1.32 mmol g^(-1.h^(-1.)and the NO removal efficiency(62%)under visible light *** high-angle annular dark-field scanning transmission electron microscope(HAADF-STEM)and synchrotron-radiation-based X-ray absorption fine-structure spectroscopy(XAFS)proved that pd in TMPd existed in an isolated state,and the atomic force microscope(AFM)proved the ultrathin morphology of *** calculations had demonstrated that single-atom Pd could serve as the active center and more effectively achieve electron transfer,indicating that single-atom Pd played a vital role in photocatalytic hydrogen *** addition,a possible photocatalytic pathway of NO removal was proposed based on ESR and in-situ infrared spectra,in which the catalysts anchored with single-atom Pd could produce more active substances and more effectively oxidize NO to NO_(2)^(-)or NO_(3)^(-).The results suggested that coordinating single-atom metal species as the active site in the center of porphyrin could be a feasible strategy to obtain various ultrathin porphyrin-based single-atom photocatalysts to acquire excellent photocatalytic performance further.

关键词： Porphyrin-based MOFs Single-atom Pd Ultrathin 2D nanosheets Hydrogen evolution NO removal

优秀传统文化与现代科技融合的内涵价值与机制路径探析

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科学技术哲学研究 2024年第5期41卷 114-122页

作者：潘澍陈思陈凡中共辽宁省委党校文史教研部沈阳110004 东北大学科学技术哲学研究中心沈阳110819

优秀传统文化与现代科技的融合是一种创新发展的策略,旨在将传统的文化遗产、艺术形式、思维方式等与现代科技手段结合,以激活传统文化的生命力,拓宽其传播渠道,提升其影响力,同时也为科技赋予更丰富的文化内涵和情感价值。优秀传统文... 详细信息

优秀传统文化与现代科技的融合是一种创新发展的策略,旨在将传统的文化遗产、艺术形式、思维方式等与现代科技手段结合,以激活传统文化的生命力,拓宽其传播渠道,提升其影响力,同时也为科技赋予更丰富的文化内涵和情感价值。优秀传统文化与现代科技的融合,既是新质生产力生成与发展的重要途径,也是其具体表现形式。优秀传统文化与现代科技交汇融通是一项综合性系统工程,涉及从资源保护、产品研发、市场运营到政策制定等多个层面,旨在挖掘传统文化的现代价值,使其在当今时代背景下持续传承并不断焕发生机。

关键词：优秀传统文化现代科技融合机制融合路径新质生产力

Al@TiO_(2)/KClO_(4)含能药剂的制备及反应性能

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含能材料 2024年第10期32卷 1049-1057页

作者：佟乐乐先明春毛健陈茂成琦胡建举周杨四川航天川南火工技术有限公司四川泸州646000 先进火工品技术创新中心四川泸州646000 四川大学材料科学与工程学院四川成都610064 火箭军装备部驻某地代表室四川泸州646000

为了提高Al/KClO_(4)烟火药的反应性能,减小点火器输出压力散差,采用原位置换法制备了核壳结构Al@TiO_(2)含能粒子,并用湿混造粒的方法制备了Al@TiO_(2)/KClO_(4)烟火药。分别采用扫描电镜(SEM)、X射线衍射仪(XRD)、差热-热重联用仪(TG-... 详细信息

为了提高Al/KClO_(4)烟火药的反应性能,减小点火器输出压力散差,采用原位置换法制备了核壳结构Al@TiO_(2)含能粒子,并用湿混造粒的方法制备了Al@TiO_(2)/KClO_(4)烟火药。分别采用扫描电镜(SEM)、X射线衍射仪(XRD)、差热-热重联用仪(TG-DSC)、量热仪研究了Al@TiO_(2)/KClO_(4)药剂的微观形貌、成分组成、热分解性能与燃烧性能。采用密闭爆发器分别测试了Al/KClO_(4)及Al@TiO_(2)/KClO_(4)药剂的输出压力,并对输出压力均值和标准差进行了对比。结果表明,采用原位置换法成功制备了核壳结构Al@TiO_(2)复合颗粒,基于该颗粒制备的Al@TiO_(2)/KClO_(4)药剂表观活化能降低1.%,燃烧热略低于Al/KClO_(4),TiO_(2)壳层的存在提升了Al和KClO_(4)的反应性能,Al@TiO_(2)/KClO_(4)药剂的输出压力标准差为0.1.,较Al/KClO_(4)药剂的输出压力标准差0.28显著降低。

关键词： Al@TiO_(2)含能粒子烟火药原位置换法输出压力

Controlling hydrogenation of C=C and C=O bonds in cinnamaldehyde using Pt_(1./Ni and Pt_(1./Co single-atom alloy catalysts

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Rare Metals 2024年第6期43卷 2859-2868页

作者： Huan-Shi Lan Yi-Da Yang qing-Di Sun Hao Zhang Ying Zhang qian He Ran chen Guo-Yi Bai Xiao-Hui He Hong-Bing Ji School of Chemistry and Chemical Engineering Guangxi UniversityNanning 530004China Key Laboratory of Bioinorganicand Synthetic Chemistry of Ministry of Education Fine Chemical Industry Research InstituteSchool of ChemistryIGCMESun Yat-sen UniversityGuangzhou510275China UBFC CNRSENSMMFEMTO-ST Institute25030 Besancon CEDEXFrance College of Chemistry and Materials Science Hebei UniversityBaoding 071002China State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology Institute of Green Petroleum Processing and Light Hydrocarbon ConversionCollege of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014China

Selective hydrogenation of C=C and C=O bonds in cinnamaldehyde(CAL)to produce desired products is a challenging task due to the complex conjugate system of the two unsaturated functional *** this study,a simple ball milling method is presented for synthesizing Pt-based single-atom alloy catalysts(SAAs)that can function as a control switch for the selective hydrogenation of CAL into highly valuable products.

关键词： alloy hydrogenation conjugate

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白云鄂博矿床黄河矿的矿物学研究

矿物岩石地球化学通报 2024年第5期43卷 987-997页

作者：陈彪金海龙孙庆李强刘雁江贾晓琪包头稀土研究院白云鄂博稀土资源研究与综合利用全国重点实验室

Ba-REE氟碳酸盐类矿物作为白云鄂博矿床中一类特有的稀土矿物，前人开展了大量基础晶体化学方面的研究，而对其共生组合、化学成分等方面研究则相对较少。对矿体中发现的一些粗粒黄河矿晶体，本文利用场发射扫描电镜、场发射电子探针等... 详细信息

Ba-REE氟碳酸盐类矿物作为白云鄂博矿床中一类特有的稀土矿物，前人开展了大量基础晶体化学方面的研究，而对其共生组合、化学成分等方面研究则相对较少。对矿体中发现的一些粗粒黄河矿晶体，本文利用场发射扫描电镜、场发射电子探针等分析测试仪器对其开展相关研究。结果表明，黄河矿多呈脉状、团聚状富集于矿石之中，与重晶石、萤石、氟碳酸盐矿物等紧密共生，具有典型的热液矿物分布特征。电子探针分析显示，黄河矿的化学成分主要为BaO(35.28%)和轻稀土元素（39.37%），此外由于元素的类质同相替换，部分形成黄河矿-氟碳铈钡矿-氟碳钙铈矿等系列矿物体衍生构造。结合前人的黄河矿年代学证据及本次的矿物共生组合关系，认为白云鄂博矿床中的黄河矿主要结晶沉淀于古生代的富F、Ba和REE的热液流体中，而其REE元素则主要来源于早期形成的稀土矿物的再活化。

关键词：白云鄂博矿黄河矿化学成分扫描电镜电子探针

Patterns of alteration in boar semen quality from 9 to 37 months old and improvement by protocatechuic acid

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Journal of Animal Science and Biotechnology 2024年第5期15卷 1881-1893页

作者： Ruizhi Hu Xizi Yang Jiatai Gong Jing Lv Xupeng Yuan Mingkun Shi chenxing Fu Bie Tan Zhiyong Fan Liang chen Hongfu Zhang Jianhua He Shusong Wu Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients College of Animal Science and TechnologyHunan Agricultural UniversityChangsha 410128China College of Animal Science and Technology Hunan Biological and Electromechanical PolytechnicChangsha 410127China State Key Laboratory of Animal Nutrition Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Background Comprehending the patterns of alteration in boar semen quality and identifying effective nutritional interventions are crucial for enhancing the productivity of commercial pig *** study aimed to examine the alteration in semen quality in boars,and assess the impact of protocatechuic acid(PCA)on semen quality during the phase of declining semen *** In Exp.1.a total of 38 Pig Improvement Company(PIC)boars were selected and their semen quality data were recorded from the age of 9 to 37 *** Exp.2,1. PIC boars(28 months old)were randomly assigned into three groups(n=6)and fed a basal diet,a basal diet containing 500 or 1.000 mg/kg PCA,*** experiment lasted for 1. *** The semen volume,concentration,and total number of spermatozoa in boars exhibited an increase from 9 to 1. months old and showed a significant linear decreased trend in 28,24,and 22 months *** motility displayed an upward trajectory,reaching its peak at 20 months of age,and showed a significant linear decreased trend at 20 months *** supplementation of PCA demonstrated an effect to mitigate the decrease in semen volume,concentration of spermatozoa,total number of spermatozoa(P>0.05),and significantly increased the sperm motility(P1.000 mg/kg PCA significantly increased the sperm viability(P1.SOD2,and NQO1.in testicular stromal ***,PCA can enhance phosphorylation by selectively binding to AMP-activated protein kinase(AMPK)protein,thereby improving sperm mitochondrial function and augmenting sperm motility via PGC-1.*** These data elucidated the pattern of semen quality variation in boars within the age range of 9 to 37 months old,and PCA has the potential to be a natural antioxidant to enhance sperm quality throu

关键词： Antioxidants Boars Protocatechuic acid Semen quality Signaling pathway

Dynamic Spacer Installation of Multifunctionalities into Metal-Organic Frameworks for Spontaneous One-Step Ethylene Purification from a Ternary C_(2)-Hydrocarbons Mixture

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CCS Chemistry 2024年第1期6卷 241-254页

作者： Yang-Yang Xiong cheng-Xia chen Tony Pham Zhang-Wen Wei Katherine A.Forrest Mei Pan cheng-Yong Su MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275 Department of Chemistry University of South FloridaTampaFlorida 33620

Simultaneous ethane and acetylene removal from a C_(2)-gases mixture(C_(2)H_(6),C_(2)H_(4),and C_(2)H_(2))through a one-step separation process for ethylene purification is of great importance yet challenging in petrochemical industry,owing to their similar molecule sizes and physical ***,a series of multifunctionalized metal–organic frameworks(MOFs),LIFM-XYY-1.8(LIFM stands for Lehn Institute of Functional Materials,and XYY are the initials of the first author),are constructed via a dynamic spacer installation(DSI)approach to optimize the pore-nanospaces for efficient C_(2)H_(4) isolation from the ternary C_(2)-gases *** of variable organic-spacers into the prototypical MOFs,LIFM-28 or PCN-700,results in dramatically improved pore volume/surface area,contracted pore size,and functionalized pore surface,which in turn bring out high C_(2)-gases uptake capacities,enhanced C_(2)H_(6) and C_(2)H_(2) adsorption selectivities over C_(2)H_(4),and fast adsorption kinetics,providing an effective strategy to achieve delicate trade-off among these indexes for adequate separation ***,optimized LIFM-XYY-7 presents four-times C_(2)H_(6) and C_(2)H_(2) adsorption capacities than *** breakthrough experiments reveal that poly-grade C_(2)H_(4)(>99.9%)can be obtained from binary or ternary C_(2)-hydrocarbon mixtures through a single separation *** with themolecular simulations,this work demonstrates a promising protocol of porenanospace engineering via multi-functional optimization by the DSI approach to screen out MOFs for a formidable task.

关键词： metal-organic frameworks dynamic spacer installation C_(2)H_(6)/C_(2)H_(2)/C_(2)H_(4)gases separation pore nanospace engineering multi-functional optimization