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Chinese Journal of Structural Chemistry 2006年第5期25卷 577-581页

作者： liu jian-chao he hong-wu ding ming-wu College of Chemistry Central China Normal University Wuhan 430079 China

The title compound 2-（4＇-methylphenoxy）-5,8,9-trimethyl-3-phenyl thieno[3＇,2＇：5,6] pyrido[4,3-d]pyrimidin-4（3H）-one hydrochloride （C26H23Cl4N3O2S, Mr = 583.33） has been determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c with a = 14.8442（ 11 ）, b = 11.5131 （8）, c = 17.2010（13） A, β = 113.7250（10）°, V = 2691.3（3） ,A^3, Z = 4, Dc = 1.440 g/cm^3, S = 1.094,μ = 0.547 mm^-1, F（000） = 1200, the final R = 0.0571 and wR = 0.1458. X-ray analysis reveals that the title compound combines with a molecule of dichloromethane by an intramolecular hydrogen bond. The thienopyridine ring is almost coplanar, and the dihedral angle between the thiophene plane and the pyridine plane is 0.6°.

关键词： thieno[3',2':5,6]pyrido[4,3-d]pyrimidin-4(3H)-one,triphenylphosphine iminophosphorane crystal structure

Synthesis,characterization and herbicidal activity of new thiazoline derivatives

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Chinese Chemical Letters 2013年第3期24卷 233-235页

作者： jian-chao liu Ying Liang hong-wu he College of Chemistry Central China Normal University Hubei Biopesticide Engineering Research Center Hubei Academy of Agricultural Science

A series of new thiazoline derivatives 2-alkyl（aryl） imino-4-amino-5-ethoxycarbonyl-3-phenyl-3H- thiazoline （3） and bis（2-imino-4-amino-5-ethoxycarbonyl-3-phenyl-3H-thiazoline alkylene （4） have been synthesized by reactions of intermediate 4-amino-5-ethoxycarbonyl-2-methylthio-3-phenyl-3H- thiazolinium sulphate （2） with alkylamines or arylamine in 64%-89% yields. The structures of 3 and 4 have been confirmed by 1H NMR, El-MS, IR spectroscopy and elemental analyses. Some compounds exhibited high or moderate herbicidal activities against the roots of rapeseed and barnyard grass at 100 mg/L.

关键词： ThiazolineAlkylamineArylamineherbicidal activity

Application of the hybrid RANS/LES method on the hydraulic dynamic performance of centrifugal pumps

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Journal of Hydrodynamics 2019年第3期31卷 637-640页

作者： Zheng-chuan Zhang hong-xun Chen Zheng Ma Qun Wei jian-wu he Hui liu chao liu Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China Chinese Ship Scientific Research Center Wuxi 214082 China College of Civil Engineering and Architecture Nanchang University Nanchang 330031 China Shanghai Marine Equipment Research Institute Shanghai 200031 China

The nonlinear hybrid RANS/LES method has been developed considering the simulation efficiency and accuracy to simulate the hydraulic dynamic characteristics of the centrifugal pump. It has been proved that the nonlinear hybrid RANS/LES method could effectively capture the unsteady flow structure and pressure pulsation in 2?D centrifugal pumps. To further investigate the hydraulic dynamic performance of a redesigned 3-D-gap drainage centrifugal pump, the nonlinear hybrid RANS/LES method is employed. Both numerical simulation and experimental results show that the hydraulic performance and pressure pulsation characteristics of the 3-D-gap drainage impeller centrifugal pump are significantly enhanced.

关键词： 3-D gap drainage blades nonlinear hybrid RANS/LES method pressure pulsation

Effect of layered-coupling in twisted WSe_(2) moiré superlattices

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Nano Research 2023年第2期16卷 3435-3442页

作者： Biao wu Haihong Zheng Shaofei Li Chang-Tian Wang Junnan ding Jun he Zongwen liu jian-Tao Wang Yanping liu School of Physics and Electronics Hunan Key Laboratory for Super-microstructure and Ultrafast ProcessCentral South UniversityChangsha 410083China State Key Laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneyNSW 2006Australia Songshan Lake Materials Laboratory Dongguan 523808China Shenzhen Research Institute of Central South University Shenzhen 518000China

Recently,the discovery of a variety of moiré-related properties in the twisted vertical stacking of two different monolayers has attracted considerable *** introduction of small twist angles in transition metal dichalcogenide(TMD)heterostructures leads to the emergence of moirépotentials,which provide a fascinating platform for the study of strong interactions of *** there has been extensive research on moiréexcitons in twisted bilayer superlattices,the capture and study of moiréexcitons in homostructure superlattices with layer-coupling effects remain ***,we present the observation of moiréexcitons in the twisted 1L-WSe_(2)/1L-WSe_(2)and 1L-WSe_(2)/2L-WSe_(2)homostructures with various layer-coupling *** results reveal that the moirépotential increases(~260%)as the number of underlying layers decreases,indicating the effect of layer coupling on the modulation of the moiré*** effects of the temperature and laser power dependence as well as valley polarization on moiréexcitons were further demonstrated,and the crucial spectral features observed were *** findings pave the way for exploring quantum phenomena and related applications of quantum information.

关键词： twisted homostructures moirésuperlattices moirépotential layer-coupling

Unveiling strain-enhanced moiréexciton localization in twisted van der Waals homostructures

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Nano Research 2024年第4期17卷 3245-3252页

作者： henry Rui he Haihong Zheng Biao wu Shaofei Li Junnan ding Zongwen liu jian-Tao Wang Anlian Pan Yanping liu Institute of Quantum Physics School of PhysicsCentral South UniversityChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South UniversityChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering Hunan UniversityChangsha 410082China State Key Laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083China Shenzhen Research Institute of Central South University Shenzhen 51800China

Moirésuperlattices,arising from the controlled twisting of van der Waals homostructures at specific angles,have emerged as a promising platform for quantum emission ***,the manipulation of strain provides a versatile strategy to finely adjust electronic band structures,enhance exciton luminescence efficiency,and establish a robust foundation for two-dimensional quantum light ***,the intricate interplay between strain and moirépotential remains partially ***,we introduce a meticulously designed fusion of strain engineering and the twisted 2L-WSe_(2)/2L-WSe_(2) homobilayers,resulting in the precise localization of moiré*** low-temperature photoluminescence spectroscopy,we unveil the emergence of highly localized moiré-enhanced emission,characterized by the presence of multiple distinct emission ***,our investigation demonstrates the effective regulation of moirépotential depths through strain engineering,with the potential depths of strained and unstrained regions differing by 91%.By combining both experimental and theoretical approaches,our study elucidates the complex relationship between strain and moirépotential,thereby opening avenues for generating strain-induced moiréexciton single-photon sources.

关键词： moirésuperlattices strain engineering moiréexcitons moirépotential

Energy saving and environment-friendly element-transfer reactions with industrial application potential

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Chinese Chemical Letters 2020年第5期31卷 1078-1082页

作者： chao Chen Yitao Cao Xixi wu Yuanli Cai jian liu Lin Xu Kehong ding Lei Yu School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Tianzhu hongfu Lithium Industry Technology Development Company Limited Wuwei 733200China Department of Applied Chemistry Faculty of EngineeringKyushu Institute of TechnologyKitakyushu 804-8550Japan jiangsu Yangnong Chemical Group Company Limited Yangzhou 225009China

herein we wish to propose the concept of"element-transfer reaction",which may afford the access to elemental compounds by transferring certain elements from easily available resources efficiently,concisely and precisely.A good element-transfer reaction with industrial application potential shall not generate waste and is performed under energy-saving and environment-friendly *** the past decade,we have developed a series of methods for the synthesis of fluorine-and seleniumcontaining compounds via the fluorine-and selenium-transfer reactions,while the redox reactions we re considered to be the oxygen-and hydrogen-transfer reactions as well and were also widely studied by our group for producing the high-value-added fine *** of these technologies have been successfully *** review summarizes our staged research results on fluorine-,oxygen-,hydrogen-and selenium-transfer reactions and makes a prospect on the developing trend in the field.

关键词： Element-transfer reaction Fluorine Redox Selenium Green chemistry Photocatalysis

Localization-enhanced moiréexciton in twisted transition metal dichalcogenide heterotrilayer superlattices

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Light(Science & Applications) 2023年第6期12卷 1020-1028页

作者： Haihong Zheng Biao wu Shaofei Li Junnan ding Jun he Zongwen liu Chang-Tian Wang jian-Tao Wang Anlian Pan Yanping liu School of Physics and Electronics Hunan Key Laboratory for Supermicrostructure and Ultrafast ProcessCentral South University932 South Lushan Road410083 ChangshaHunanChina State Key Laboratory of HighPerformance Complex Manufacturing Central South University932 South Lushan Road410083 ChangshaHunanChina School of Chemical and Biomolecular Engineering The University of SydneySydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneySydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences100190 BeijingChina School of Physical Sciences University of Chinese Academy of Sciences100049 BeijingChina Songshan Lake Materials Laboratory 523808 DongguanGuangdongChina Hunan Institute of Optoelectronic Integration College of Materials Science and EngineeringHunan University410082 ChangshaHunanChina Shenzhen Research Institute of Central South University 518000 ShenzhenChina

The stacking of twisted two-dimensional(2D)layered materials has led to the creation of moirésuperlattices,which have become a new platform for the study of quantum *** strong coupling of moirésuperlattices can result in flat minibands that boost electronic interactions and generate interesting strongly correlated states,including unconventional superconductivity,Mott insulating states,and moiré***,the impact of adjusting and localizing moiréexcitons in Van der Waals heterostructures has yet to be explored ***,we present experimental evidence of the localization-enhanced moiréexcitons in the twisted WSe_(2)/WS_(2)/WSe_(2)heterotrilayer with type-II band *** low temperatures,we observed multiple excitons splitting in the twisted WSe_(2)/WS_(2)/WSe_(2)heterotrilayer,which is manifested as multiple sharp emission lines,in stark contrast to the moiréexcitonic behavior of the twisted WSe_(2)/WS_(2)heterobilayer(which has a linewidth 4 times wider).This is due to the enhancement of the two moirépotentials in the twisted heterotrilayer,enabling highly localized moiréexcitons at the *** confinement effect of moirépotential on moiréexcitons is further demonstrated by changes in temperature,laser power,and valley *** findings offer a new approach for localizing moiréexcitons in twist-angle heterostructures,which has the potential for the development of coherent quantum light emitters.

关键词： twisted layer quantum

Expression and predictive value of miR-489 and miR-21 in melanoma metastasis

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World Journal of Clinical Cases 2019年第19期7卷 2930-2941页

作者： Hao Mo jian Guan Zhen-chao Yuan Xiang Lin Zhen-Jie wu Bin liu Ju-Liang he Department of Bone and Soft Tissue Surgery Guangxi Medical University Cancer Hospital

BACKGROUND Melanoma is a highly malignant skin tumour, and is one of the most rapidly growing malignant tumors in recent years. According to statistics, the morbidity of cancer increases with age, accounting for 1.6% of new cancer cases and 0.6% of deaths worldwide. Melanoma has a serious impact on society and families, thus it is of great significance to find biological markers related to the diagnosis and treatment of *** To explore the expression and predictive value of mir-489 and mir-21 in melanoma *** A total of 60 patients with malignant melanoma treated at our hospital from June2017 to December 2018 were selected as a research group, while 40 healthy subjects were selected as a control group. qRT-PCR technique was used to detect miR-489 and miR-21 in serum of the two groups. ROC curve was drawn to evaluate the predictive value and diagnostic efficiency. Spearman test was used for correlation analysis. Logistic single-and multiple-factor analyses were performed to identify the risk factors related to melanoma *** The expression of miR-489 in the research group was significantly lower than that in the control group(P he expression of miR-21 in the research group was significantly higher than that in the control group(P he expression of miR-489 and miR-21 was related to TNM stage and metastasis(P he diagnosis of melanoma patients, the sensitivity, specificity, and AUC of miR-489 alone were 75.56%, 80.00%, and 0.852, respectively. The sensitivity, specificity, and AUC of miR-21 alone were 77.78%, 82.22%, and 0.844,respectively. MiR-489 was negatively correlated with TNM stage of melanoma(r=-0.612, P < 0.001), while miR-21 was positively correlated with TNM stage(r =0.609, P < 0.001). Logistic single-and multiple-factor regression analyses showed that TNM stage, miR-489, and mir-21 were independent risk factors for malignant melanoma *** MiR-489 and miR-21 may par

关键词： MiR-489 MiR-21 Melanoma metastasis Predictive value

A case of Posner-Schlossman syndrome treated by gonioscopy-assisted transluminal trabeculotomy

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International Journal of Ophthalmology(English edition) 2023年第5期16卷 832-835页

作者： Xiao Tang Jia-jian wu Xue-Ning ding hong-Jin he Xiao-Qun Zhou Yu he Lin Jing liu-Zhi Zeng Eye School of Chengdu University of TCM Chengdu 610075Sichuan ProvinceChina Chengdu First People’s Hospital Chengdu 610095Sichuan ProvinceChina

Dear Editor,We present the reported case of Posner-Schlossman syndrome(PSS)treated by gonioscopy-assisted transluminal trabeculotomy(GATT).A 28-year-old male presented recurrent PSS in his left eye,leading to uncontrolled intraocular pressure(IOP)and thus glaucomatous optic *** years ago,the patient suddenly experienced swelling with impaired vision in his left eye with no obvious cause,and was diagnosed with the PSS in left eye in another hospital.

关键词： impaired transluminal glaucoma

Polymer waveguide thermo-optical switch with loss compensation based on NaYF_4: 18% Yb^(3+), 2% Er^(3+) nanocrystals

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Chinese Physics B 2018年第11期27卷 539-544页

作者： Gui-chao Xing Mei-Ling Zhang Tong-he Sun Yue-wu Fu Ya-Li Huang jian Shao Jing-Rong liu Fei Wang Da-ming Zhang State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 China

A polymer waveguide thermo-optical switch with loss compensation based on NaYF_4： 18% Yb^（3＋）, 2% Er^（3＋）nanocrystals, fabricated by traditional semiconductor processes, has been investigated. NaYF4： 18% Yb^（3＋）, 2% Er^（3＋）nanocrystals were prepared by a pyrolysis method. The morphology and luminescent properties of the nanocrystals were *** nanocrystals were doped into SU-8 as the core material of an optical waveguide amplifier. The size of the device was optimized for its optical and thermal fields as well as its transmission characteristics. The device was fabricated on a silica substrate by spin coating, photolithography, and wet etching. The insertion loss of the switch device is～15 dB. The rise and fall times of the device are 240 μs and 380 μs, respectively, as measured by application of a 304 Hz square wave voltage. The extinction ratio of the device is about 14 dB at an electrode-driving power of 7 mW. When the pump light power is 230 mW and the signal light power is 0.1 mW, the loss compensation of the device is 3.8 dB at a wavelength of1530 nm. Optical devices with loss compensation have important research significance.

关键词： NaYF4:18%Yb3+ 2% Er3+ nanocrystals loss compensation polymer