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Synthesis, Crystal Structure and Magnetic Properties of Two Ribbon-shaped Chalcogenidometalate Complexes(Butyl-Sn)4S8M2(TEPA)2(M = Mn, Ni)

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Chinese Journal of Structural Chemistry 2020年第8期39卷 1503-1508,1361页

作者： LAI heng-dong LIN Qi-Pu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China

Under solvothermal conditions,two ribbon-shaped chalcogenidometalate coordination compounds(butyl-Sn)4S8M2(TEPA)2(M=Mn(1),Ni(2),TEPA=tetraethylenepentamine),have been synthesized and characterized by elemental analysis,energy dispersive X-ray,infrared/ultraviolet-visible spectroscopy,thermogravimetric analysis,single-crystal and powder X-ray *** 1 and 2 crystallize in the triclinic space group P1 with a=13.999(3),b=14.658(4),c=16.150(4)A,a=68.78(3)°,β=69.12(3)°,γ=72.07(3)°,V=2825.0(14)A3,Z=2,Mr=1448.28,μ=2.503 mm-1,F(000)=1444,GOOF=1.001,R=0.0629 and wR=0.1286 for 12855 observed reflections with I>2σ(I)for 1;and a=11.029(3),b=11.858(2),c=11.888(3)A,a=87.27(2)°,β=69.10(2)°,γ=83.63(2)°,V=1443.6(6)A^3,Z=1,Mr=1455.78,μ=2.660 mm^-1,F(000)=728,GOOF=1.017,R=0.0464 and wR=0.1185 for 9267 observed reflections with I>2σ(I)for 2,*** 1 and 2 are composed of linear hexamer{Sn4M2}(M=Mn for 1,and Ni for 2)with 8μ2-S2-bridges and 2 TEPA terminal *** the quite large inter-paramagnetic-cation spacing(dMn-S-Sn-S-Sn-S-Sn-S-Sn-S-Mn=13.485 A,dNi-S-Sn-S-Sn-S-Sn-S-Sn-S-Ni=14.078 A),two samples exhibit distinct ferromagnetic-like behaviors with the intradimer coupling constant(J)and Weiss(θ)values up to 6.8 cm^-1 and 8.5 K for 1 and 17.2 cm-1 and 21.1 K for 2 calculated from the temperature dependence of the magnetic susceptibility.

关键词： chalcogenidometalates organotin-sulfides linear complexes magnetic properties

Nonlinear Registration of Brain Magnetic Resonance Images with Cross Constraints of Intensity and Structure

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Computers, Materials & Continua 2024年第5期79卷 2295-2313页

作者： Han Zhou HongtaoXu Xinyue Chang Wei Zhang heng dong Digital Fujian Research Institute of Big Data forAgriculture and Forestry Fujian Agriculture and Forestry UniversityFuzhou350002China College of Computer and Information Science Fujian Agriculture and Forestry UniversityFuzhou350002China

Many deep learning-based registration methods rely on a single-stream encoder-decoder network for computing deformation fields between 3D ***,these methods often lack constraint information and overlook semantic consistency,limiting their *** address these issues,we present a novel approach for medical image registration called theDual-VoxelMorph,featuring a dual-channel cross-constraint *** innovative network utilizes both intensity and segmentation images,which share identical semantic information and feature *** encoder-decoder structures calculate deformation fields for intensity and segmentation images,as generated by the dual-channel cross-constraint *** design facilitates bidirectional communication between grayscale and segmentation information,enabling the model to better learn the corresponding grayscale and segmentation details of the same anatomical *** ensure semantic and directional consistency,we introduce constraints and apply the cosine similarity function to enhance semantic *** on four public datasets demonstrates superior performance compared to the baselinemethod,achieving Dice scores of 79.9%,64.5%,69.9%,and 63.5%for OASIS-1,OASIS-3,LPBA40,and ADNI,respectively.

关键词： Medical image registration cross constraint semantic consistency directional consistency dual-channel

The improvement of turbulence modeling for the aerothermal computation of hypersonic turbulent boundary layers

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Science China(Physics,Mechanics & Astronomy) 2010年第2期53卷 369-379页

作者： dong Ming & ZHOU heng Department of Mechanics,Tianjin University,Tianjin 300072,China 1. Department of Mechanics Tianjin University Tianjin 300072 China

The engineering computation of turbulent flows is mainly based on turbulence modeling,however,accurate aerothermal computation of hypersonic turbulent boundary layers is still a not well-solved problem. Aerothermal computation for turbulent boundary layers on a supersonic or hypersonic blunt cone with small bluntness is done firstly by using both direct numerical simulation and BL model,and seven different cases are investigated. Then the results obtained by the two methods are compared,and the reason causing the differences is found to be the incorrect assumption in the turbulence modeling that the ratio between eddy heat conductivity and eddy viscosity is constant throughout the whole boundary layer. Based on certain theoretical arguments,a method of modifying the expression of eddy heat conductivity in the region surrounding the peak location of the turbulent kinetic energy is proposed,which is verified to be effective,at least for the seven cases investigated.

关键词： hypersonic turbulent boundary layer aerothermal supersonic cone direct numerical simulation(DNS) BL model coefficient of eddy heat conductivity

Synthesis and Characterization of {2-Formyl-6-[1-(2,4,6-trimethylphenyl)]-4- chlorophenoxy}_2Ni and Its Ethylene Oligomerization

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Chinese Journal of Structural Chemistry 2005年第8期24卷 930-934页

作者： ZHANG dong-heng DU Jian-Long HAN Ling-Qin SUN Wen-Hua Key Laboratory of Engineering Plastics Institute of Chemistry The Chinese Academy of Sciences Beijing 100080 State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou 350002 China College of Chemistry & Environmental Science Hebei UniversityChina Baoding 071002

The title nickel complex （C34H3oCl2N2NiO4, Mr = 660.21） has been synthesized and its crystal structure was determined by single-crystal X-ray structure analysis. It crystallizes in the monoclinic system, space group P21/n with a = 11.026（8）, b = 11.491（8）, c = 12.119（9） A°, β=91.328（13）°, Z= 2, V= 1535.0（19） ,A°^3, Dc = 1.428 g/cm^3, F（000） = 684 andμ（MoKa） = 0.848 mm^-1 The structure was refined to R = 0.0544 for 1813 observed reflections with I 〉 2σ（I） and wR =0.0867 for 3132 unique reflections. The molecule of the complex is high symmetrical. Ni（Ⅱ） atom is located in the symmetric center and coordinated to two phenolic oxygen and two imino nitrogen atoms, forming two six-membered rings. Upon activation with methylaluminoxane （MAO）, it is active for ethylene oligomerization.

关键词： nickel complex salicylaldimine ethylene oligomerization

The effect of high temperature induced variation of specific heat on the hypersonic turbulent boundary layer and its computation

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Science China(Physics,Mechanics & Astronomy) 2010年第11期53卷 2103-2112页

作者： dong Ming & ZHOU heng Department of Mechanics,Tianjin University,Tianjin 300072,China 1. Department of Mechanics Tianjin University Tianjin 300072 China

For hypersonic vehicles,as the temperature in its boundary layer usually exceeds 600 K,for which the molecular vibrational degree of freedom is excited,the perfect gas model is no longer *** this paper,the effect of high temperature induced variation of specific heat on the hypersonic turbulent boundary layer of flat plates is investigated by direct numerical simulations with the perfect gas model,*** constant specific heat,as well as with a variable specific heat gas *** comparison of the results from the two gas models has found that the effect of the variation of specific heat on the velocity of the turbulent boundary layers is relatively small,while its effect on temperature,such as the mean temperature,the temperature fluctuations,is *** is also found that the mean specific heat is quite close to the specific heat calculated by using the mean temperature,indicating that it is possible to do turbulence *** modeling is done under the variable specific heat gas model with the mean temperature as the *** feasibility of such consideration is verified by applying the SST model for variable specific heat turbulence computation.

关键词： hypersonic turbulent boundary layer specific heat direct numerical simulation SST model

Transfer Learning Algorithm Design for Feature Transfer Problem in Motor Imagery Brain-computer Interface

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China Communications 2022年第2期19卷 39-46页

作者： Yu Zhang Huaqing Li heng dong Zheng Dai Xing Chen Zhuoming Li School of Computer Science and Technology Harbin Institute of TechnologyHarbin 150001 China School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150001 China School of Electrical Computer and Energy EngineeringArizona State UniversityTempeArizona85281 USA

The non-stationary of the motor imagery electroencephalography(MI-EEG)signal is one of the main limitations for the development of motor imagery brain-computer interfaces(MI-BCI).The nonstationary of the MI-EEG signal and the changes of the experimental environment make the feature distribution of the testing set and training set deviates,which reduces the classification accuracy of *** this paper,we propose a Kullback–Leibler divergence(KL)-based transfer learning algorithm to solve the problem of feature transfer,the proposed algorithm uses KL to measure the similarity between the training set and the testing set,adds support vector machine(SVM)classification probability to classify and weight the covariance,and discards the poorly performing *** results show that the proposed algorithm can significantly improve the classification accuracy of the testing set compared with the traditional algorithms,especially for subjects with medium classification ***,the algorithm based on transfer learning has the potential to improve the consistency of feature distribution that the traditional algorithms do not have,which is significant for the application of MI-BCI.

关键词： brain-computer interface motor imagery feature transfer transfer learning domain adaptation

Effects of comprehensive nursing on postoperative complications,mental status and quality of life in patients with glioma

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World Journal of Clinical Cases 2022年第22期10卷 7825-7831页

作者： heng dong Xiao-Li Zhang Chun-Xiang Deng Bo Luo Department of Neurosurgery Nanchong Central HospitalNanchong 637000Sichuan ProvinceChina

BACKGROUND The complexity and refractory of brain glioma requires treatment that should involve a multidisciplinary approach to improve quality of care and fulfill patients’*** To explore the effects of comprehensive nursing on postoperative complications,psychological state and quality of life in patients with brain *** A total of 106 patients with confirmed brain gliomas admitted to Nanchong Central Hospital between January 2019 and May 2021 were selected by random *** were categorized into an observation group and a control group using a random number table with 53 patients in each *** in the observation group were given comprehensive nursing in addition to conventional nursing and patients in the control group were given conventional *** overall incidence of postoperative complications including limb dysfunction,high fever and epilepsy was compared between the two *** mental status was evaluated in the two groups before and after intervention using self-rating anxiety scale(SAS)and self-rating depression scale(SDS).Quality of life was assessed and compared using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire between the two groups before and after the *** After intervention,the overall incidence of postoperative complications was significantly lower in the observation group(7.55%)than that in the control group(20.75%)(P0.05).However,after intervention,scores of SAS and SDS decreased in the two groups compared with those before intervention,and the scores of SAS and SDS were lower in the observation group than in the control group(all P0.05).In contrast,quality of life increased in the two groups compared with those before intervent

关键词： Brain glioma Comprehensive nursing Complications Mental state Quality of life

CeCl_3·7H_2O as an efficient catalyst for one-pot synthesis of β-amino ketones by three-component Mannich reaction

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Chinese Chemical Letters 2010年第1期21卷 31-34页

作者： Yan Dai[a], Bin dong Li[a], heng Dao Quan[b] Chun Xu Lü[a] [a]School of Chemical Engineering Nanjing University of Science Technology Nanjing 210094 China [b]National Institute of Advanced Industrial Science Technology Ibaraki 3058565 Japan

Cerium trichloride heptahydrate(CeCl_3·7H_2O) was found to be an efficient and recyclable catalyst for the three-component direct Mannich reaction of anilines and benzaldehydes with *** protocol has advantages of hig... 详细信息

关键词： Cerium trichloride heptahydrate Mannich reaction β-Amino ketones Lewis acid

Combination therapy with toripalimab and anlotinib in advanced esophageal squamous cell carcinoma:A case report

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World Journal of Clinical Cases 2023年第27期11卷 6579-6586页

作者： Si-Cong Chen dong-heng Ma Jia-Jian Zhong Hepatobiliary and Pancreatic Surgery Huazhong University of Science and Technology Union Shenzhen HospitalShenzhen 518052Guangdong ProvinceChina

BACKGROUND Toripalimab and anlotinib have shown good response in esophageal cancer,with high objective response rate and progression free ***,they have been approved as second-line or above-line therapy for advanced or unresectable esophageal *** of these two drugs may have synergistic effects,but evidence of which is *** SUMMARY Here,we report on a 73-year-old male,newly diagnosed with advanced esophageal squamous cell carcinoma(ESCC),who received a combination of toripalimab and *** response was achieved after treatment for 3 mo and remission was maintained up to 14 *** The combination therapy of toripalimab and anlotinib is a promising treatment for unresectable ESCC and related clinical trials are warranted.

关键词： Esophageal squamous cell carcinoma Toripalimab Anlotinib Complete response Case report