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Raman spectroscopy and quantum chemical calculation on YCl_(3)-KCl molten salt system

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Rare Metals 2023年第11期42卷 3886-3896页

作者： Can Xu Xian-Wei Hu jiang-Yu Yu Peng-Wei Li Ai-Min Liu Shao-Hua Luo Zhong-Ning Shi zhao-Wen Wang Key Laboratory Ecological Metallurgy of Multimetallic Mineral‘Ministry of Education’ School of MetallurgyNortheastern UniversityShenyang110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819China School of Materials Science and Engineering Northeastern UniversityShenyang110819China Department of Chemistry and Bioscience Aalborg University9220AalborgDenmark

The knowledge on the ionic structure of YCl_(3)-KCl molten system is of guiding significance for the practical production of yttrium metals and yttrium alloys via molten salt electrolysis using this system as *** this paper,the theoretical Raman spectra of the ionic groups which may exist in YCl_(3)-KCl molten system are simulated by quantum chemical calculation using Gaussian09 and Gauss View 5.0 programs based on density functional theory(DFT).Then the ionic structures of 20 mol%-60 mol%YCl_(3)-KCl molten salt systems are studied by comparing the Raman shift values of the bands in the theoretical Raman spectra of different ionic groups with the experimental spectra of this ***_(6)^(3-),Y_(2)Cl_(7)^(-),Y_(2)Cl_(8)^(2-)and Y_(2)Cl_(9)^(3-)are thought to exist in the molten *** the increase of temperature,the relative content of YCl_(6)^(3-)ionic groups increases while those of Y_(2)Cl_(7)^(-),Y_(2)Cl_(8)^(2-)and Y_(2)Cl_(9)^(3-)ionic groups ***,the"lifetime"of all ionic groups decreases within the temperature range of 692-730℃.Meanwhile,the relative contents of Y_(2)Cl_(7)^(-),Y_(2)Cl_(8)^(2-)and Y_(2)Cl_(9)^(3-)increase with the increase of YCl_(3)content,while that of YCl_(6)^(3-)*** wave function analysis of the four ionic groups(YCl_(6)^(3-),Y_(2)Cl_(7)^(-),Y_(2)Cl_(8)^(2-),and Y_(2)Cl_(9)^(3-))is carried out by Multiwfn *** net charge in each group,the direction of electron migration during the formation of each group,the sites where electrophilic and nucleophilic reactions are most likely to occur in each ionic group,and the order of bond breaking during chemical reactions for the four groups are obtained.

关键词： YCl_(3)-KCl molten salt Ionic structure Raman spectroscopy Quantum chemical calculation Wave function analysis

Changes in plant debris and carbon stocks across a subalpine forest successional series

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Forest Ecosystems 2021年第3期8卷 523-536页

作者： Zhihui Wang Lianjun zhao Yi Bai Fei Li Jianfeng Hou Xuqing Li Yurui jiang Yuyue Deng Bingqian Zheng Wanqin Yang School of Life Sciences Taizhou UniversityTaizhou 318000China Wanglang National Nature Reserve Authority Pingwu 622550SichuanChina

Background:As a structurally and functionally important component in forest ecosystems,plant debris plays a crucial role in the global carbon *** it is well known that plant debris stocks vary greatly with tree species composition,forest type,forest origin,and stand age,simultaneous investigation on the changes in woody and non-woody debris biomass and their carbon stock with forest succession has not been ***,woody and non-woody debris and carbon stocks were investigated across a subalpine forest successional gradient in Wanglang National Nature Reserve on the eastern Qinghai-Tibet ***:Plant debris ranged from 25.19 to 82.89 Mg∙ha−1 and showed a global increasing tendency across the subalpine forest successional series except for decreasing at the S4 successional ***,the ratios of woody to non-woody debris stocks ranged from 26.58 to 208.89,and the highest and lowest ratios of woody to non-woody debris stocks were respectively observed in mid-successional coniferous forest and shrub forest,implying that woody debris dominates the plant *** particular,the ratios of coarse to fine woody debris stocks varied greatly with the successional stage,and the highest and lowest ratios were found in later and earlier successional subalpine forests,***,the woody debris stock varied greatly with diameter size,and larger diameter woody debris dominated the plant ***,the carbon stock of plant debris ranged from 10.30 to 38.87 Mg∙ha−1 across the successional series,and the highest and lowest values were observed in the mid-coniferous stage and shrub forest stage,*** importantly,the carbon stored in coarse woody debris in later successional forests was four times higher than in earlier successional ***:The stock and role of woody debris,particularly coarse woody debris,varied greatly with the forest successional stage and dominated the carbon cycle in the s

关键词： Coarse woody debris Fine woody debris Forest successional series Later successional stage Earlier successional stage Log decay class Diameter size

Design of superconducting compounds at lower pressure via intercalating XH_(4) molecules(X=B,C,and N)into fcc lattices

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Chinese Physics B 2024年第12期33卷 34-38页

作者： yue zhao Sihan Liu Jiao Liu Tingting Gu Jian Hao Jingming Shi Wenwen Cui Yinwei Li Laboratory of Quantum Functional Materials Design and Application School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou 221116China

Recently,many encouraging experimental advances have been achieved in ternary hydrides superconductors under high ***,the extreme pressure required is indeed a challenge for practical application,which promotes a further exploration for high temperature(T_(c))superconductors at relatively low ***,we performed a systematic theoretical investigation on a series of ternary hydrides with stoichiometry AX_(2)H_(8),which is constructed by interacting molecular XH_(4)(X=B,C,and N)into the fcc metal A lattice under low pressure of 0-150 *** uncovered five compounds which are dynamically stable below 100 GPa,e.g.,AcB_(2)H_(8)(25 GPa),LaB_(2)H_(8)(40 GPa),RbC_(2)H_(8)(40 GPa),CSC_(2)H_(8)(60 GPa),and SrC_(2)H_(8)(65 GPa).Among them,AcB_(2)H_(8),which is energetically stable above 2.5 GPa,exhibits the highest Tcof 32 K at 25 *** superconductivity originates mainly from the coupling between the electron of Ac atoms and the associated low-frequency phonons,distinct from the previous typical hydrides with H-derived *** results shed light on the future exploration of superconductivity among ternary compounds at low pressure.

关键词： ternary superconductors low pressure XH_(4) molecules fcc lattice

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城乡空间规划的生态耦合理论与方法体系

土木建筑与环境工程 2009年第1期31卷 94-98页

作者：赵珂冯月重庆大学建筑城规学院重庆400045 西南交通大学建筑学院四川成都610031

21世纪,中国在经历了20世纪末土地资源利用粗放、生态环境退化、乡村发展滞后等发展困境后,城乡统筹生态规划成为构建和谐社会的重要课题。文中尝试运用复杂性科学和生态学思想方法,在对城乡空间关系进行再认识并提出城乡空间生态耦合... 详细信息

21世纪,中国在经历了20世纪末土地资源利用粗放、生态环境退化、乡村发展滞后等发展困境后,城乡统筹生态规划成为构建和谐社会的重要课题。文中尝试运用复杂性科学和生态学思想方法,在对城乡空间关系进行再认识并提出城乡空间生态耦合概念的基础上,建构出由城乡用地综合解译辨识、城乡非建设用地规划、城乡耦合条件环境评价、城乡空间协同发展和城乡空间分形优化所组成的城乡空间规划方法体系。

关键词：复杂性科学城乡空间生态耦合规划

Berry texture QTL and candidate gene analysis in grape(Vitis vinifera L.)

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Horticulture Research 2023年第12期10卷 152-164页

作者： Hong Lin Li Ma Qiuyu Guo Cheng Liu Yangming Hou Zhendong Liu Yuhui zhao Changyue jiang Xiuwu Guo Yinshan Guo College of Horticulture Shenyang Agricultural University120 Dongling RoadShenyang110866China Ministry of Education Key Laboratory of Protected Horticulture Shenyang Agricultural UniversityShenyang110866China

Berry texture is a noteworthy economic trait for grape;however,the genetic bases and the complex gene expression and regulatory mechanism for the diverse changes in berry texture are still poorly *** this study,the results suggest that it is difficult to obtain high-mesocarp firmness(MesF)and high-pericarp puncture hardness(PPH)grape cultivars with high pericarp brittleness(PerB).The high-density linkage map was constructed using whole-genome resequencing based on 151 F1 individuals originating from intraspecific hybridization between the firm-flesh cultivar‘Red Globe’and soft-flesh cultivar‘Muscat Hamburg’.The total length of the consensus map was 1613.17 cM,with a mean genetic distance between adjacent bin markers of 0.59 ***-seven quantitative trait loci(QTLs)for berry MesF,PPH,and PerB were identified in linkage groups(LGs)1,3,4,6,8,9,10,11,14,16,and 17,including twelve QTLs that were firstly detected in LGs 6,11,and *** promising candidate genes were identified from the stable QTL regions in LGs 10,11,14,and *** particular,VvWARK2 and VvWARK8 refer to chromosome 17 and are two promising candidate genes for MesF and PPH,as the VvWARK8 gene may increase pectin residue binding with WARK for high berry firmness maintenance and the allele for VvWARK2 carrying the‘CC’and‘GA’genotypes at Chr17:1836764 and Chr17:1836770 may be associated with non-hard texture grape *** addition,real-time quantitative polymerase chain reaction(RT-qPCR)verification revealed that the promising candidate transcription factor genes VvMYB4-like,VvERF113,VvWRKY31,VvWRKY1,and VvNAC83 may regulate cell wall metabolism candidate gene expression for grape berry texture changes.

关键词： cultivar fir Berry

Experimental Evidence of Radiation Amplification Without Population Inversion in Sodium Atoms

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Chinese Physics Letters 1992年第11期9卷 589-592页

作者： GAO Jinyue GUO Chuan JIN Guangxu GUO Xinzhen WANG Qingwen ZHANG Hanzhuang zhao Jian jiang Yun WANG Dezhong jiang Dongmei Department of Physics Jilin UniversityChangchun 130023 Changchun Institute of Applied Chemistry Academia SinicaChangchun 130022

We have demonstrated a radiation amplification without population inversion in sodium according to a four-level model,which was recentlyproposed by Nor-ducci et *** amplified radiation signal at 589.0nm has been observed when an intense coherent driving field at 589.6nm was on and an incoherent pumping process from the ground state 3S_(1/2) to 3P_(3/2) excited state was operating.

关键词： pumping driving intense

Probiotics supplementation for management of type Ⅱ diabetes risk factors in adults with polycystic ovarian syndrome: a meta-analysis of randomized clinical trial

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Food Science and Human Wellness 2023年第4期12卷 1053-1063页

作者： Chengcheng Zhang Yingyue Sheng Jinchi jiang Yuzheng Xue Leilei Yu Fengwei Tian Jianxin zhao Hao Zhang Jian Jin Qixiao Zhai State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China Department of Gastroenterology Affiliated Hospital of Jiangnan UniversityWuxi 214122China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China Wuxi Translational Medicine Research Center and jiangsu Translational Medicine Research Institute Wuxi Branch Wuxi 214122China School of Pharmaceutical Sciences Jiangnan UniversityWuxi 214122China

This meta-analysis of randomized controlled trials aimed to evaluate the effects of probiotic supplementation on glucose homeostasis in patients with polycystic ovary syndrome(PCOS).The meta-analysis was performed in accordance with the Cochrane Handbook guidelines and relevant the preferred reporting items for systematic reviews and meta-analyses(PRISMA)statement *** 825 identified reports,11 randomized clinical trials were included in the *** analysis of pooled extracted data revealed that supplementation with probiotics significantly decreased fasting blood glucose(FBG,n=7;standardized mean difference(SMD)=−0.40;95%confidence interval(CI):−2.02,−0.02;P=0.04)and insulin levels(n=6;SMD=−0.57;95%CI:−0.89,−0.25;P=0.0004)and the homeostatic model assessment of insulin resistance(n=7;SMD=−0.64;95%CI:−0.96,−0.31;P=0.0001)while increasing the quantitative insulin sensitivity check index(QUICKI,n=5;SMD=0.58;95%CI:0.08,1.09;P=0.02)in patients with *** FBG-reducing effect decreased as the baseline body mass index(BMI)and mean age of the participants ***,a greater number of bacterial species and a higher bacterial dose were shown to reduce QUICKI *** systematic review indicated that probiotic supplementation may help to control glucose homeostasis in adults with polycystic ovarian syndrome.

关键词： Polycystic ovary syndrome Type 2 diabetes Glucose homeostasis Probiotic Meta-analysis Randomized clinical trial

基于贝叶斯网络的电力通信SDH设备安全评估模型

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自动化应用 2025年第2期66卷 258-260页

作者：赵丽维中国石油集团电能有限公司供电公司变电检修部黑龙江大庆163455

为有效提高同步数字层次(SDH)设备在电力通信系统中的安全性,提出一种基于贝叶斯网络的电力通信SDH设备安全评估模型。该模型从信息和物理相融合的角度分析SDH设备在以往电力通信中的潜在威胁和脆弱性,并依次建立了贝叶斯网络的安全评... 详细信息

为有效提高同步数字层次(SDH)设备在电力通信系统中的安全性,提出一种基于贝叶斯网络的电力通信SDH设备安全评估模型。该模型从信息和物理相融合的角度分析SDH设备在以往电力通信中的潜在威胁和脆弱性,并依次建立了贝叶斯网络的安全评价模型,结合实际应用中的SDH设备分析各种防护方法对设备安全的影响。研究表明,该研究有利于决策者采取有效的防护措施,提升装备的安全性能。

关键词：电力通信 SDH技术贝叶斯网络

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汽车零部件的轻量化设计与制造工艺

时代汽车 2025年第2期 163-165页

作者：赵伟卫山西职业技术学院山西太原030006

汽车零部件的轻量化,是现代汽车工业中提高性能、降低能耗和减少环境影响的关键技术之一。本文从轻量化设计的核心理念出发,探讨了如何通过减少材料使用、优化结构及新型材料的应用,实现汽车的轻量化。重点介绍了铝合金、镁合金、碳纤... 详细信息

汽车零部件的轻量化,是现代汽车工业中提高性能、降低能耗和减少环境影响的关键技术之一。本文从轻量化设计的核心理念出发,探讨了如何通过减少材料使用、优化结构及新型材料的应用,实现汽车的轻量化。重点介绍了铝合金、镁合金、碳纤维等新型材料的特点和应用,以及激光熔化技术、压铸、粉末冶金等先进制造工艺,还分析了多材料连接技术在轻量化设计中的应用。最后探讨了成形工艺、精密加工和质量控制,对实现轻量化目标的重要作用。

关键词：汽车零部件轻量化设计制造工艺