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Hierarchical Homochiral Assembly of Polyhedral Cage-Type Nanoclusters

CCS Chemistry 2024年第10期6卷 2537-2548页

作者： Cheng-Long Deng bao-Liang Han Ze-Yu Liu Zhong-Hua pan Jiao He Yu-Long Li Zhi-Lin Yang Geng-Geng Luo Chen-Ho Tung Di Sun Lan-Sun Zheng Key Laboratory of Environmentally Friendly Function Materials Ministry of EducationCollege of Materials Science and EngineeringHuaqiao UniversityXiamen 361021 School of Chemistry and Chemical Engineering State Key Laboratory of Crystal MaterialsShandong UniversityJi’nan 250100 College of Physical Science and Technology Xiamen UniversityXiamen 361005 College of Chemistry and Environmental Engineering Sichuan University of Science and EngineeringZigong 643000 State Key Laboratory for Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005

Hierarchical chiral self-assembly is of profound significance for biomolecules for their biological ***-precise metal nanoclusters(NCs)offer better opportunities to construct hierarchical ***,achieving hierarchical homochiral assembly of nanocrystals protected by achiral ligands has proven to be a formidable task,with existing examples primarily limited to heterochiral *** we put forward a hierarchical assembly strategy towards precisely fabricating highly ordered homochiral ***,clusterin-nanocage type copper-hydride NCs act as synthons,of which entity is featured with a hexagonal close-packed Cu_(9)kernel embedded in a C_(3)-symmetric trigonal-prismatic metallacage,leading to a chiral core-shell primary structure with either P or M *** four homochiral NCs combined with guests through synergistic noncovalent interactions spontaneously organize into a supramolecular tetrahedral secondary structure within a unit ***,these nanoscopic supramolecular motifs pack into tertiary hierarchical superlattice of chiral cubic crystalline ***,the crystalline material shows excellent robustness,and fascinating blueexcitable near-infrared thermally activated delayed fluorescence *** work not only exhibits that nanocage-type NCs can be smart as proteins to translate chiral primary structure into tertiary chiral hierarchical complexity,but also provides new insights into structure-to-superstructure,enabling bottom-up creation of higher-level hierarchical homochiral superlattice structures.

关键词： polyhydrido copper nanoclusters chiral polyhedral metallacage hierarchical homochiral assembly thermally activated delayed fluorescence

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Non-flammable long chain phosphate ester based electrolyte via competitive solventized structures for high-performance lithium metal batteries

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Journal of Energy Chemistry 2024年第10期97卷 156-165,I0004页

作者： Li Liao Zhiqiang Han Xuanjie Feng pan Luo Jialin Song Yin Shen Xiaoshuang Luo Xinpeng Li Xuanzhong Wen Bo Yu Junchen Chen Bingshu Guo Mingshan Wang yun Huang Hongmei Zhang Mengmeng Yin Jiangtao Liu Yuanhua Lin Xing Li School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500SichuanChina State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.LtdZunyi 563003GuizhouChina Beijing Advanced Innovation Center for Materials Genome Engineering Center for Green InnovationSchool of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China

Safety remains a persistent challenge for high-energy-density lithium metal batteries(LMBs).The development of safe and non-flammable electrolytes is especially important in harsh conditions such as high ***,a flame-retardant,low-cost and thermally stable long chain phosphate ester based(tributyl phosphate,TBP)electrolyte is reported,which can effectively enhance the cycling stability of highly loaded high-nickel LMBs with high safety through co-solvation *** interfacial compatibility between TBP and electrode is effectively improved using a short-chain ether(glycol dimethyl ether,DME),and a specially competitive solvation structure is further constructed using lithium borate difluorooxalate(LiDFOB)to form the stable and inorganic-rich electrode *** from the presence of the cathode electrolyte interphase(CEI)and solid electrolyte interphase(SEI)enriched with LiF and Li_(x)PO_(y)F_(z),the electrolyte demonstrates excellent cycling stability assembled using a 50μm lithium foil anode in combination with a high loading NMC811(15.4 mg cm^(-2))cathode,with 88%capacity retention after 120 ***,the electrolyte exhibits excellent high-temperature characteristics when used in a 1-Ah pouch cell(N/P=0.26),and higher thermal runaway temperature(238℃)in the ARC(accelerating rate calorimeter)demonstrating high *** novel electrolyte adopts long-chain phosphate as the main solvent for the first time,and would provide a new idea for the development of extremely high safety and high-temperature electrolytes.

关键词： Non-flammable electrolyte Long chain phosphate ester Solvation structure Lithium metal batteries Battery safety

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Chromosome-level genome assembly of the Asian citrus psyllid,Diaphorina citri

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Insect Science 2024年第1期31卷 13-27页

作者： Shuang Lei Shi-Jiang Yu Qi pan Li-Li Ding Si-Chen Li Lu-Yan Cheng Shu-Qi Wang Bing-Hai Lou Jun He Cui-yun Lei Lin Cong Hao-Qiang Liu Xue-Feng Wang Chun Ran Citrus Research Institute Southwest University/Chinese Academy of Agricultural SciencesNational Engineering Research Center for CitrusChongqingChina

Diaphorina citri is a global citrus *** a vector insect,it can transmit the causative agents of citrus huanglongbing,causing irreversible losses to the citrus *** acquisition of genomic information can provide a molecular genetic basis for effective control of ***,the DNBSEQ™,Oxford Nanopore Technologies,and Hi-C technologies are applied to generate a high-quality chromosome-level genome of *** genome size of *** was 523.78 Mb with a scaffold N50 of 47.05 Mb distributed on 13 chromosomes.A total of 250.64 Mb(47.85%)repeat sequences and 24048 protein-coding genes were *** resequencing of female and male individuals indicated that the sex chromosome system of *** is *** analysis demonstrated that *** and Pachypsylla venusta,which separated from their most recent common ancestor about 336.62 million years ago,were the most closely ***,we identified genes potentially involved in detoxification metabolism,pathogen transmission,and honeydew secretion for further *** high-quality genome provides an important reference for developing effective management strategies of ***.

关键词： Asian citrus psyllid chromosome-level genome comparative genomics cytochrome P450 detoxification Huanglongbing

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Applying Hybrid Clustering in Pulsar Candidate Sifting with Multi-modality for FAST Survey

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Research in Astronomy and Astrophysics 2024年第3期24卷 283-296页

作者： Zi-Yi You yun-Rong pan Zhi Ma Li Zhang Shuo Xiao Dan-Dan Zhang Shi-Jun Dang Ru-Shuang Zhao Pei Wang Ai-Jun Dong Jia-Tao Jiang Ji-Bing Leng Wei-An Li Si-Yao Li School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550025China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550025China College of Big Data and Information Engineering Guizhou UniversityGuiyang 550025China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Key Laboratory of Information and Computing Guizhou Province Guizhou Normal UniversityGuiyang 550001China School of Big data and Computer Science Guizhou Normal UniversityGuiyang 550025China Guizhou Software Engineering Research Center Guiyang 550000China

Pulsar search is always the basis of pulsar navigation,gravitational wave detection and other research ***,the volume of pulsar candidates collected by the Five-hundred-meter Aperture Spherical radio Telescope(FAST)shows an explosive growth rate that has brought challenges for its pulsar candidate filtering ***,the multi-view heterogeneous data and class imbalance between true pulsars and non-pulsar candidates have negative effects on traditional single-modal supervised classification *** this study,a multi-modal and semi-supervised learning based on a pulsar candidate sifting algorithm is presented,which adopts a hybrid ensemble clustering scheme of density-based and partition-based methods combined with a feature-level fusion strategy for input data and a data partition strategy for *** on both High Time Resolution Universe SurveyⅡ(HTRU2)and actual FAST observation data demonstrate that the proposed algorithm could excellently identify pulsars:On HTRU2,the precision and recall rates of its parallel mode reach0.981 and 0.988 *** FAST data,those of its parallel mode reach 0.891 and 0.961,meanwhile,the running time also significantly decreases with the increment of parallel nodes within ***,we can conclude that our algorithm could be a feasible idea for large scale pulsar candidate sifting for FAST drift scan observation.

关键词： methods data analysis-surveys-methods numerical

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Evaluation of the efficacy of neoadjuvant chemotherapy for intermediate and advanced breast cancer by 3.0T MR and ultrasound combined with tumour markers

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Clinical Research Communications 2024年第3期7卷 53-60页

作者： bao-Jun pan Chun-Lei Sun Yu-Hua Liu Guo-Zheng Tan Chun-yun Liu Hai-Jie Xu Qing-Yu Meng Ji-Xuan Liu Xiang-Dong Wei Wen-Ming Cao Thyroid and mammary department Shandong Changle People’s HospitalWeifang 262400China. Gynecology Department Pingshan District Central HospitalShenzhen 518122China.

Objective:To evaluate the efficacy of neoadjuvant chemotherapy before and after neoadjuvant chemotherapy for intermediate and advanced breast cancer using 3.0T MR and ultrasound in combination with tumour markers(CEA,CA-153,CA125),and to provide therapeutic references for the clinicians,so as to better satisfy the needs of treatment for intermediate and advanced breast cancer ***:The team collected 30 patients who were diagnosed with intermediate and advanced breast cancer by biopsy and received neoadjuvant chemotherapy,and divided them into sensitive and insensitive groups according to the MP grading of postoperative pathological *** team retrospectively analysed the changes in the values of serum CEA,CA-153,and CA 125 before and after the neoadjuvant chemotherapy,the changes in the average ADC of the lesions before and after the observation by MRI,and the changes in the volume and size of lesions before and after the observation by ultrasonography to assess the effects of neoadjuvant chemotherapy individually,and the results of neoadjuvant chemotherapy were evaluated *** effect of neoadjuvant chemotherapy was assessed *** of the above was evaluated independently,and the accuracy of each item was calculated by comparing the evaluation results with the pathological examination results,and the accuracy of the single item was compared with the accuracy of the three combined tests to determine whether the combined evaluation was more ***:All three examination and testing methods can achieve high accuracy,and the combined evaluation of the three is more accurate than the evaluation of the single way,and the difference is statistically significant(P<0.05).Conclusion:In neoadjuvant chemotherapy for breast cancer patients,the combined assessment of MR,CDFI and tumour markers can more comprehensively and accurately assess the effect of ADC,and more accurately guide the clinical treatment and determine the progn

关键词： breast cancer neoadjuvant chemotherapy MR ultrasound tumour markers

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基于界面本构模型的砂土中单桩荷载−沉降响应预测方法

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岩土力学 2024年第6期45卷 1686-1698页

作者：周攀李镜培李盼盼刘耕云张超哲同济大学岩土及地下工程教育部重点实验室上海200092 同济大学地下建筑与工程系上海200092 东南大学岩土工程研究所江苏南京211189

基于界面本构模型提出了一种新的砂土中单桩荷载沉降响应的预测方法。首先,从土−结构界面本构模型出发推导了严格的桩−土界面非线性荷载传递模型,该模型承继了界面本构模型特征,能够模拟桩−土界面上发生的应变硬化/软化、剪胀与应力路... 详细信息

基于界面本构模型提出了一种新的砂土中单桩荷载沉降响应的预测方法。首先,从土−结构界面本构模型出发推导了严格的桩−土界面非线性荷载传递模型,该模型承继了界面本构模型特征,能够模拟桩−土界面上发生的应变硬化/软化、剪胀与应力路径依赖性等行为。此外,采用双曲线荷载传递模型模拟桩端−土相互作用的非线性应力−位移关系。上述荷载传递模型所需参数可以通过室内界面剪切试验和土工试验进行校准。继而,基于荷载传递法,提出了单桩荷载沉降响应分析的一维计算模型,并采用迭代算法进行数值求解。最后,将理论解答与已报道的模型试验、自主开展的模型桩试验以及数值模拟结果进行比较,以验证所提出的理论方法的正确性。试验结果表明,预测值与实测值吻合较好,且该方法能够很好地预测非位移桩与位移桩的荷载沉降响应。提出了一个基于界面本构模型的单桩荷载沉降响应分析框架,为竖向荷载下砂土中单桩优化设计提供了理论参考。

关键词：单桩砂土荷载-沉降响应桩-土相互作用界面本构模型模型试验

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Effect of gas saturation on P-wave velocity in tight sandstone

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Applied Geophysics 2024年第3期21卷 487-495,617页

作者： pan bao-Zhi Zhou Wei-Yi Guo Yu-Hang Fang Chun-Hui Zhang Li-Hua College of Geo-exploration Science and Technology Jilin UniversityChangchun 130026China

By measuring the variation of the P-and S-wave velocities of tight sandstone samples under water saturation,it was confirmed that with the decrease in water saturation,the P-wave velocity first decreased and then *** variation in velocity was influenced by the sandstone’s *** commonly used Gassmann equation based on fluid substitution theory was *** the calculated results with the measured data,it was found that the Gassmann equation agreed well with the measured data at high water saturation,but it could not explain the bending phenomenon of P-wave velocity at low *** indicated that these equations could not accurately describe the relationship between fluid content and rock acoustic *** reasons for this phenomenon were discussed through Taylor’s *** coefficients of the fitting formula were calculated and verified by fitting the measured acoustic velocity changes of the *** relationship between P-wave velocity and saturation was discussed,which provides experimental support for calculating saturation using seismic and acoustic logging data.

关键词： Tight sandstone Saturation model Reservoir parameters Acoustic wave measurement

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立方对角面开孔人工鱼礁流场效应的数值模拟

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水产学报 2024年第3期48卷 184-195页

作者：薛大文庞聪利潘昀浙江海洋大学船舶与海运学院

人工鱼礁是建设现代化海洋牧场的基础设施，为了研究在不同海域流速下，迎流角度对人工鱼礁的影响，实验基于Ansys-Fluent平台，采用RNG k-ε的湍流模型，进行数值水槽模拟，对结构边长为3 m的立方对角面开孔鱼礁在3种来流速度(0.5、1.0... 详细信息

人工鱼礁是建设现代化海洋牧场的基础设施，为了研究在不同海域流速下，迎流角度对人工鱼礁的影响，实验基于Ansys-Fluent平台，采用RNG k-ε的湍流模型，进行数值水槽模拟，对结构边长为3 m的立方对角面开孔鱼礁在3种来流速度(0.5、1.0和1.5 m/s)、4种迎流角度(0°、15°、30°和45°)下的上升流体积、背涡流体积、阻力、倾覆力矩等水动力特性进行比较分析。结果显示，人工鱼礁内部和周围存在具有显著特征的上升流区域和背涡流区域；流场规模的大小基本不受来流速度的影响；流速是影响立方对角面开孔人工稳定性的主要因素，流速越大，作用在礁体上的阻力和倾覆力矩相应变大，礁体的稳定性越差；迎流角度是影响人工鱼礁流场效应的主要因素，鱼礁的流场效应规模在迎流角度为30°～45°时达到最优，礁体为45°迎流时上升流体积和背涡流体积都达到最大值。利用权重赋值法，引入人工鱼礁建设效果综合评价模型，通过综合评价分析，在不考虑海底底质淤积、风浪等条件下，投放人工鱼礁时宜选取最大流速不超过1 m/s的海域，且迎流角在30°至45°范围内，鱼礁的建设效果最佳。

关键词：人工鱼礁海洋牧场流场效应数值模拟稳定性迎流角度

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基于人口动态演化的碳排放问题研究

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辽宁工程技术大学学报（自然科学版） 2024年第1期43卷 119-128页

作者：包攀高雷阜辽宁工程技术大学工商管理学院辽宁葫芦岛125105 辽宁工程技术大学运筹与优化研究院辽宁阜新123000

为实现数据信息有限约束下碳排放的模型构建与策略选择,在系统分析人口因素及其导致社会环境与物质水平发生变化的基础上,从人口自然增长、受到环境等条件约束的阻滞性人口变化、考虑年龄结构的人口变化,以及偏微分方程形式的人口发展... 详细信息

为实现数据信息有限约束下碳排放的模型构建与策略选择,在系统分析人口因素及其导致社会环境与物质水平发生变化的基础上,从人口自然增长、受到环境等条件约束的阻滞性人口变化、考虑年龄结构的人口变化,以及偏微分方程形式的人口发展角度探究不同人口模型演化蕴含的内在规律,并根据拓扑学中同伦变换思想得到一个等效替代函数,使问题能够统一化处理。研究结果表明:所得扩展的STIRPAT模型拟合效果更优,利用Markov过程对人口演化模型预测的影响因素进行反向误差调节与修正,得到更精准的预测结果,基于人口变化解析碳排放问题的思想也为处理相关问题提供了有效方法。

关键词：碳排放人口变化同伦变换 Markov过程扩展的STIRPAT模型

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不同养护方式对铁尾矿砂制备的再生粗骨料性能影响

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哈尔滨工程大学学报 2024年第6期45卷 1217-1224页

作者：刘宝潘钢华高敏蒙海宁陆军工程大学国防工程学院江苏南京210007 东南大学材料科学与工程学院江苏南京211189 东南大学江苏省土木工程材料重点实验室江苏南京211189 江苏镇江建筑科学研究院有限公司江苏镇江212004

为了提高铁尾矿沙的利用率,本文采用成球技术使用铁尾矿沙制备粗骨料,将经过界面预处理后的铁尾矿砂采用喷洒预处理液水雾,同时撒入胶凝材料的方式生成骨料颗粒,最后将骨料颗粒进行养护得到再生粗骨料。探究不同的养护方式对再生粗骨料... 详细信息

为了提高铁尾矿沙的利用率,本文采用成球技术使用铁尾矿沙制备粗骨料,将经过界面预处理后的铁尾矿砂采用喷洒预处理液水雾,同时撒入胶凝材料的方式生成骨料颗粒,最后将骨料颗粒进行养护得到再生粗骨料。探究不同的养护方式对再生粗骨料的性能的影响,结合SEM和MIP探究养护方式对再生粗骨料微观形貌和孔结构的影响。结果表明:改进的成球技术制备铁尾矿沙再生粗骨料具有一定的可行性。另外,自然养护条件骨料的性能表现最差,蒸汽养护骨料的压碎指标最小,碳化养护骨料的吸水率最小。从微观结构来看碳化养护的骨料体系结构致密,孔隙和微裂缝含量相对较少,因此骨料吸水率最小;蒸汽养护水化产物含有大量的凝胶状和网状结构的水化硅酸钙、针状钙矾石和少量的氢氧化钙晶体,这是压碎指标小的原因。这些研究结果为铁尾矿沙制备再生粗骨料应用于混凝土的后期服役过程中提供了指导意义。

关键词：铁尾矿沙再生粗骨料养护方式利用率微观结构压碎指标吸水率混凝土

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