http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Zhongyu Zhang,Caifeng Bi,Yuhua Fan,Nan Zhang,Xingchen Yan,Jian Zuo,Xia Zhang 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.6
A novel complex [Zn(phen)(o-AB)2] [phen: 1,10-phenanthroline o-AB: o-aminobenzoic acid] was synthesized and characterized by elemental analysis and X-ray diffraction single-crystal analysis. The crystal crystallizes in monoclinic, space group P2(1)/c with a = 7.6397(6) Å, b = 16.8761(18) Å, c = 17.7713(19) Å, α = 90°, β = 98.9570(10)°, γ = 90°, V = 2.2633(4) nm3, Z = 4, F(000) = 1064, S = 1.058, Dc = 1.520 g·cm−3, R1 = 0.0412, wR2 = 0.0948, μ = 1.128 mm−1. The Zn(II) is six coordinated by two nitrogen and four oxygen atoms from the 1,10-phenanthroline and o-aminobenzoic acid to furnish a distorted octahedron geometry. The complex exhibits intense fluorescence at room temperature. Theoretical studies of the title complex were carried out by density functional theory (DFT) B3LYP method. CCDC: 898291.
Zhang, Zhongyu,Bi, Caifeng,Fan, Yuhua,Zhang, Xia,Zhang, Nan,Yan, Xingchen,Zuo, Jian Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.6
A novel complex [$Zn(phen)(o-AB)_2$] [phen: 1,10-phenanthroline o-AB: o-aminobenzoic acid] was synthesized and characterized by elemental analysis and X-ray diffraction single-crystal analysis. The crystal crystallizes in monoclinic, space group P2(1)/c with $a=7.6397(6){\AA}$, $b=16.8761(18){\AA}$, $c=17.7713(19){\AA}$, ${\alpha}=90^{\circ}$, ${\beta}=98.9570(10)^{\circ}$, ${\gamma}=90^{\circ}$, $V=2.2633(4)nm^3$, Z = 4, F(000) = 1064, S = 1.058, $Dc=1.520g{\cdot}cm^{-3}$, $R_1=0.0412$, $wR_2=0.0948$, ${\mu}=1.128mm^{-1}$. The Zn(II) is six coordinated by two nitrogen and four oxygen atoms from the 1,10-phenanthroline and o-aminobenzoic acid to furnish a distorted octahedron geometry. The complex exhibits intense fluorescence at room temperature. Theoretical studies of the title complex were carried out by density functional theory (DFT) B3LYP method. CCDC: 898291.
GaAsBi Quantum Dots for 1.55 μm Laser Diode
Mingxuan Zhang,Liyao Zhang,Zhongyue Zhang,Peng Yu,Shuang Yao 대한금속·재료학회 2021 ELECTRONIC MATERIALS LETTERS Vol.17 No.2
Bi incorporations can reduce the bandgap of GaAs1-xBix. With a Bi content of 10.5%, GaAsBi is predicted to emit light at1.55 μm. However, high Bi incorporation is difficult for material growth and deteriorates the optical property of GaAsBi. In this work, a GaAsBi quantum dot (QD)/InAlAs structure on InP platform is proposed to fabricate 1.55 μm laser diodes. Strain distributions and band structures are calculated with different Bi contents and QD sizes using finite element method. High Bi contents and large QD sizes are beneficial for achieving long wavelengths. GaAsBi QD/InAlAs structures with alow Bi content of 5.6% and proper QD sizes, such as a diameter of 30 nm and a height of 6 nm, can emit light at 1.55 μm. The proposed structure can be realized by migration enhanced epitaxy and droplet epitaxy and provides a feasible way forfabricating GaAsBi based 1.55 μm laser diodes applied in fiber-optic communications.
Zhongyu Liang,Zhang Yina,Li Taofeng 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.6
Building materials stand as a crucial cornerstone in the realm of architecture in China. Enhancing the processing technologyof diverse building materials to effectively elevate the level of architectural art has emerged as a prominent research focus. Inlight of this, the paper develops an analysis model centered on the influence of architectural art, utilizing the Taurus searchalgorithm. The study delves into the impact of distinct processing technologies on the diversified artistic expression of buildings. It commences with an analysis of the current state of building materials processing technologies and their connection toarchitectural art. Following this, the paper constructs an analysis model elucidating the influence of architectural art, examiningits effects on diversified artistic expression through experiments. Finally, by amalgamating established building materialsprocessing technology with experimental verification, the paper scrutinizes the actual efficacy of the analysis model forthe influence of architectural art based on the Taurus search algorithm. The experimental outcomes underscore the variedinfluence of different processing technologies on the diversity of artistic expression in buildings, showcasing the quantitativeevaluation capabilities of the impact analysis model.
Zhongyu Duan,Guoli Ma,Wenjun Zhang 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.12
A novel copper nanoparticles were synthesized from cupric sulfate using hydrazine as reducing reagents. A series of aromatic nitro compounds were reacted with sodium borohydride in the presence of the copper nanoparticles catalysts to afford the aromatic amino compounds in high yields. Additionally, the catalysts system can be recycled and maintain a high catalytic effect in the reduction of aromatic nitro compounds.
Metabolic Regulation of Gene Expression by Histone Lysine β-Hydroxybutyrylation
Xie, Zhongyu,Zhang, Di,Chung, Dongjun,Tang, Zhanyun,Huang, He,Dai, Lunzhi,Qi, Shankang,Li, Jingya,Colak, Gozde,Chen, Yue,Xia, Chunmei,Peng, Chao,Ruan, Haibin,Kirkey, Matt,Wang, Danli,Jensen, Lindy M. Elsevier 2016 Molecular cell Vol.62 No.2
<P><B>Summary</B></P> <P>Here we report the identification and verification of a β-hydroxybutyrate-derived protein modification, lysine β-hydroxybutyrylation (Kbhb), as a new type of histone mark. Histone Kbhb marks are dramatically induced in response to elevated β-hydroxybutyrate levels in cultured cells and in livers from mice subjected to prolonged fasting or streptozotocin-induced diabetic ketoacidosis. In total, we identified 44 histone Kbhb sites, a figure comparable to the known number of histone acetylation sites. By ChIP-seq and RNA-seq analysis, we demonstrate that histone Kbhb is a mark enriched in active gene promoters and that the increased H3K9bhb levels that occur during starvation are associated with genes upregulated in starvation-responsive metabolic pathways. Histone β-hydroxybutyrylation thus represents a new epigenetic regulatory mark that couples metabolism to gene expression, offering a new avenue to study chromatin regulation and diverse functions of β-hydroxybutyrate in the context of important human pathophysiological states, including diabetes, epilepsy, and neoplasia.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Lysine β-hydroxybutyrylation (Kbhb) is a new type of histone mark </LI> <LI> 44 non-redundant histone Kbhb sites are identified in human and mouse cells </LI> <LI> Histone Kbhb increases under starvation and STZ-induced ketoacidosis </LI> <LI> Starvation-induced H3K9bhb is associated with active gene expression </LI> </UL> </P> <P><B>Graphical Abstract</B></P> <P>[DISPLAY OMISSION]</P>
Xie Zhongyu,Yu Wenhui,Ye Guiwen,Li Jinteng,Zheng Guan,Liu Wenjie,Lin Jiajie,Su Zepeng,Che Yunshu,Ye Feng,Zhang Zhaoqiang,Wang Peng,Wu Yanfeng,Shen Huiyong 생화학분자생물학회 2022 Experimental and molecular medicine Vol.54 No.-
Mesenchymal stem cells (MSCs) are a common kind of multipotent cell in vivo, but their heterogeneity limits their further applications. To identify MSC subpopulations and clarify their relationships, we performed cell mapping of bone-marrow-derived MSCs through single-cell RNA (scRNA) sequencing. In our study, three main subpopulations, namely, the stemness subpopulation, functional subpopulation, and proliferative subpopulation, were identified using marker genes and further bioinformatic analyses. Developmental trajectory analysis showed that the stemness subpopulation was the root and then became either the functional subpopulation or the proliferative subpopulation. The functional subpopulation showed stronger immunoregulatory and osteogenic differentiation abilities but lower proliferation and adipogenic differentiation. MSCs at different passages or isolated from different donors exhibited distinct cell mapping profiles, which accounted for their corresponding different functions. This study provides new insight into the biological features and clinical use of MSCs at the single-cell level, which may contribute to expanding their application in the clinic.
Duan, Zhongyu,Ma, Guoli,Zhang, Wenjun Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.12
A novel copper nanoparticles were synthesized from cupric sulfate using hydrazine as reducing reagents. A series of aromatic nitro compounds were reacted with sodium borohydride in the presence of the copper nanoparticles catalysts to afford the aromatic amino compounds in high yields. Additionally, the catalysts system can be recycled and maintain a high catalytic effect in the reduction of aromatic nitro compounds.
Han, Bing,Zhang, Li,Liu, Binyuan,Dong, Xiaofang,Kim, Il,Duan, Zhongyu,Theato, Patrick American Chemical Society 2015 Macromolecules Vol.48 No.11
<P>A facile strategy has been demonstrated for the selective synthesis of highly stereoregular polyesters with <I>cis</I>-2,3-(<I>exo</I>,<I> exo</I>) or <I>trans</I>-2,3-(<I>exo</I>,<I> endo</I>) repeating units by the organocatalysts mediated alternating copolymerization of cyclohexene oxide and norbornene anhydride (NA) stereoisomers. The geometrical structure of polyester can be tuned simply by modulating the type of NA isomers (<I>endo</I>- or <I>exo</I>-NA), monomer feed ratio, and reaction temperature. The <I>cis</I>- (>99%) and <I>trans</I>-polyesters (>99%) exhibit high glass transition temperature up to 129.8 and 115.9 °C, respectively. The resulting polyesters provide a versatile platform to incorporate various functional groups through the robust thiol–ene reaction of the pendant norbornenyl groups.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2015/mamobx.2015.48.issue-11/acs.macromol.5b00555/production/images/medium/ma-2015-00555x_0010.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma5b00555'>ACS Electronic Supporting Info</A></P>
Analytical Solution of Loosening Pressure Model for Shallow Tunnel Based on Pile-beam-arch Method
Tao Li,Zhongyu Zhang,Muchi Luo,Bo Liu,Yanlong Wang,Lingfeng Li 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.8
Loosening of earth pressure by tunnels is an important parameter for the structural design of subway stations, this study analyzes the difference between the loosening pressures of each span of a shallow multi-span tunnel station using the pile-beam-arch (PBA) method. By conducting a similarity model test of the PBA method, we simulate the complete excavation process. We study the sliding failure mode of the overlying soil of the shallow-buried station and the law of change of the loosening pressure of each span. A simplified calculation model for the loosening pressure of shallow buried multi-span tunnels by the cavity pile method was developed, and the applicability of the formulae and sensitivity analysis of the parameters were carried out. The results reveal that the loosening pressure of the mid-span is transferred to the stress of the side-span during tunnel excavation. This finding contradicts Terzaghi’s and Bierbaumer’s methods, which do not consider the influence of tunnel structure on the loosening pressure of the overlying soil. The side span relaxation pressure is only related to the soil capacity and the depth of burial of the tunnel This research can provide an important theoretical reference for the design of the overburden load and lateral confining pressure of the PBA structure design.