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Effect of Ti on microstructure and properties of electromagnetic stirred Al-18wt.%Mg_(2)Si alloy

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China Foundry 2023年第1期20卷 78-82页

作者： Yu-yan Ren Sheng-yuan Chen Tong-yu Liu Song Zhang Ying-min Li Faculty of Electromechanical Information Weifang University of Science and TechnologyShouguang 262700ShandongChina weifang Key Laboratory of High-temperature Materials and Single Crystal Components Fabrication technology for Advanced Engine System Weifang 262700ShandongChina School of Materials science and Engineering Shenyang University of TechnologyShenyang 110870China

By adding different amounts of Ti into the electromagnetic stirred Al-18wt.%Mg_(2)Si alloy,the effect of Ti element on the microstructure and mechanical properties of the alloy was *** experimental results show that the microstructure is refined after modification with Ti,which is related to the heterogeneous nucleation of TiAl_(3) particles on theα-Al *** the increase of Ti content and holding time after stirring,the primary Mg_(2)Si phase is refined firstly and then coarsened,and correspondingly,the mechanical properties of the alloy show a trend of increasing at first and then *** the addition of Ti is 0.5wt.%and the holding time is about 20 min,the refinement effect of primary Mg_(2)Si phase is the most significant and the mechanical properties of the alloy are optimal.

关键词： Al-18wt.%Mg_(2)Si alloy Ti modification electromagnetic stirring mechanical property

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Emergency Evacuation Path Planning of Passenger Ship Based on Cellular Ant Opt imization Model

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Journal of Shanghai Jiaotong university(science) 2020年第6期25卷 721-726页

作者： WANG Peiliang ZHANG Ting XIAO Yingjie Merchant Marine College Engineering Research Center of Simulation Technology of the Ministry of EducationShanghai Maritime UniversityShanghai 201306China Shandong Transport Vocational College Weifang 261206ShandongChina weifang University of science and technology Weifang 262700ShandongChina

Aiming at the problem of emergency evacuation path planning of passenger ships,the cellular ant algorithm is applied to path planning on the basis of the grid ***,a grid map based on hexagonal cells is established to equalize the moving length between the ***,the static field function is introduced into the optimization design of the heuristic function to make the heuristic function adapt to the hexagonal grid ***,the segmented update rule is applied to pheromone *** order to verify the feasibility and rationality of the proposed method,the simulation of an exhibition hall in a passenger ship is carried out,and the path planning performed by the cellular ant algorithm and the traditional model is *** results show that when the cellular ant algorithm is used to plan the path,it not only accelerates the search speed,but also increases the understanding space,which can effectively avoid falling into the localy optimal solution.

关键词： emergency evacuation optimal path cellular ant algorithm

Synthesis, Post-modification and Catalytic Properties of Metal-organic Framework NH2-MIL-53（Al）

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Chemical Research in Chinese Universities 2017年第2期33卷 231-238页

作者： LIU Lili TAI Xishi ZHOU Xiaojing LIU Lijuan School of Chemistry & Chemical Engineering and Environmental Engineering Weifang University Weifang 261061 P. R. China

A postsynthetic modification method was used to prepare salicylaldehyde functionalized metal-organicframeworks through the nucleophilic addition of salicylaldehyde with the amine group present in the frameworks ofNH2-MIL-53（A1）. Hydroxyl groups were successfully grafted onto NI-I2-MIL-53（A1）, and imine groups were ***, these hydroxyl and imine groups of the resulting NH2-MIL-53（A1）-SA can be used as the anchoringgroup to stabilise Au^3＋ ions and Au^0 nanoparticles（NPs）. By doing this, Au^3＋ ions and Au^0 NPs were successfully en-capsulated in the cages of NH2-MIL-53（A1） by a simple impregnation method. The resulting gold functionalizedNH2-MIL-53（AI） showed good catalytic activities in the one-pot synthesis of structurally divergent propargylaminesby three-component coupling reactions of aldehydes, amines and alkynes. Various aromatic/aliphatic aldehydes, aro-matic alkynes, and piperidine were able to undergo three-component coupling on NH2-MIL-53（A1）-Au. In addition,the catalyst NH2-M/L-53（A/）-Au was recovered easily by centrifugation and reused up to four times. Thus, it can beused for the environmentally friendly synthesis ofpropargylamines.

关键词： Metal-organic framework Postmodification NH2-MIL-53(AI) Three-component coupling Propargyl-amine

（3,3）-Connected Three-dimentional Supramolecular Metal Organic Polyhedral Based on Nanometresized Ligand with Magnetism Properties

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Chemical Research in Chinese Universities 2018年第5期34卷 723-726页

作者： ZHOU Xiaojing LIU Lili TAI Xishi ZHANG Hui College of Chemical & Chemieal Engineering and Enviromental Engineering Weifang University Weifang 261061 P. R. China

A three-dimentinal metal organic framework [Co2（L）CI（DMF）2（H20）]（DMF）3（H20）3 based on the nano- metresized ligand 4,4＇,4＂-[1,3,5-benzenetriyltris（carbonylimino）]trisbenzoic acid was synthesized, and characterized by means of single-crystal X-ray diffraction, elemental analysis, infrared spectroscopy, thermogravimetry analysis and magnetism. This obtained structure can be considered to be constructed from 2D layer, which displays the topology of hbc based on Co2（COO）3 secondary building unit, and further to be linked into a 3D suprarnolecular architecture by N--H...O hydrogen bonds. The magnetism of the complex was carried out, which shows ferromag- netic exchange interactions.

关键词： Co complex C3-Symmetric ligand Ferromagnetic

Modeling curve dynamics and spatial geometry characteristics of rice leaves

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Journal of Integrative Agriculture 2017年第10期16卷 2177-2190页

作者： ZHANG Yong-hui TANG Liang LIU Xiao-jun LIU Lei-lei CAO Wei-xing ZHU Yan Computer Engineering School Weifang University National Engineering and technology Center for Information Agriculture/Key Laboratory for Crop System Analysis and Decision Making Ministry of Agriculture/Jiangsu Key Laboratory for Information Agriculture/Jiangsu Collaborative Innovation Center for Modern Crop Production/Nanjing Agricultural University

The objective of this work was to develop a dynamic model for describing leaf curves and a the rice leaf （including sub-models for unexpanded leaf blades, expanded leaf blades, and dimensional （3D） dynamic visualization of rice leaves by combining relevant models detailed spatial geometry model of leaf sheaths）, and to realize three- Based on the experimental data of different cultivars and nitrogen （N） rates, the time-course spatial data of leaf curves on the main stem were collected during the rice development stage, then a dynamic model of the rice leaf curve was developed using quantitative modeling technology. Further, a detailed 3D geometric model of rice leaves was built based on the spatial geometry technique and the non-uniform rational B-spline （NURBS） method. Validating the rice leaf curve model with independent field experiment data showed that the average distances between observed and predicted curves were less than 0.89 and 1.20 cm at the tilling and jointing stages, respectively. The proposed leaf curve model and leaf spatial geometry model together with the relevant previous models were used to simulate the spatial morphology and the color dynamics of a single leaf and of leaves on the rice plant after different growing days by 3D visualization technology. The validation of the leaf curve model and the results of leaf 3D visualization indicated that our leaf curve model and leaf spatial geometry model could efficiently predict the dynamics of rice leaf spatial morphology during leaf development stages. These results provide a technical support for related research on virtual rice.

关键词： rice morphological models leaf geometry characteristics virtual plant

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Recent Advances in Image Dehazing

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IEEE/CAA Journal of Automatica Sinica 2017年第3期4卷 410-436页

作者： Wencheng Wang Xiaohui Yuan College of Information and Control Engineering Weifang University IEEE Department of Computer science and Engineering University of North Texas

Images captured in hazy or foggy weather conditions can be seriously degraded by scattering of atmospheric particles,which reduces the contrast,changes the color,and makes the object features difficult to identify by human vision and by some outdoor computer vision *** image dehazing is an important issue and has been widely researched in the field of computer *** role of image dehazing is to remove the influence of weather factors in order to improve the visual effects of the image and provide benefit to *** paper reviews the main techniques of image dehazing that have been developed over the past ***,we innovatively divide a number of approaches into three categories:image enhancement based methods,image fusion based methods and image restoration based *** methods are analyzed and corresponding sub-categories are introduced according to principles and *** quality evaluation methods are then described,sorted and discussed in ***,research progress is summarized and future research directions are suggested.

关键词： Atmospheric scattering model image dehazing image enhancement quality assessment

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Combined laparoscopic-endoscopic approach for gastric glomus tumor:A case report

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World Journal of Clinical Cases 2021年第24期9卷 7181-7188页

作者： Wen-Hao Wang Ting-Ting Shen Zhi-Xing Gao Xin Zhang Zhao-Hui Zhai Yu-Li Li Clinical Medical College Weifang Medical UniversityWeifang 261042Shandong ProvinceChina Department of Gastroenterology Affiliated Hospital of Weifang Medical UniversityWeifang 261042Shandong ProvinceChina The Plastic Surgery Hospital of weifang University Weifang Medical UniversityWeifang 261042Shandong ProvinceChina Plastic Surgery Institute of weifang Medical University Yuhe Campus of Weifang Medical UniversityWeifang 261042Shandong ProvinceChina

BACKGROUND Gastric glomus tumor(GGT)is rare submucosal mesenchymal tumor that lacks specific clinical manifestations and is usually treated mainly by traditional surgical *** paper presents a case of a GGT,exhibited both intraluminally and extraluminally growth that was removed by laparoscopy-gastroscopy cooperative *** SUMMARY A 52-year-old male presented with epigastric discomfort accompanied by a sense of fullness for 3 *** gastrointestinal endoscopy identified a submucosal lump located in the gastric *** ultrasonography identified a 2.4 cm×1.8 cm lump located in the gastric *** originated from the muscularis propria and exhibited both intraluminally and extraluminally growth,with hypoechoicity on the periphery,hyperechoicity in the middle,and unclear *** tomography showed nodular thickening of 3.0 cm×2.2 cm in the gastric wall of the gastric antrum,and after enhancement,the lesion exhibited obvious enhancement We suspected that it was a gastrointestinal stromal tumor(glomus tumor and schwannoma were not excluded)and planned to perform laparoscopy-gastroscopy cooperative *** staining after the operation revealed that spinal muscular atrophy(+),hcaldesmon(+),cluster of differentiation 34(CD34)(+),2%Ki-67-positive rate,CD56,melanoma antigen,CD117,discovered on GIST-1,leukocyte common antigen,caudal type homeobox 2,cytokeratin,and S-100 were all *** tumor was finally diagnosed as a *** GGTs are rare submucosal tumors of the stomach and should be considered in the differential diagnosis of gastric submucosal ***-gastroscopy cooperative surgery is less invasive and more precise and could be an effective method for the treatment of GGTs.

关键词： Gastric glomus tumor Laparoscopy Gastroscopy Immunohistochemical staining Operation method Case report

Highly Efficient White Organic Light-emitting Devices with Optimized Electron Transporting Layers

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Chemical Research in Chinese Universities 2017年第2期33卷 227-230页

作者： ZHANG Tianyu ZHENG Yu WANG Chengming ZHANG Yixin LIU Shihao MA Jian ZHANG Letian XIE Wenfa CHEN Ping LIN Jun LIU Yujuan Key Laboratory of Geo-exploration Instruments Ministry of Educanon College of Instrumentation and Electrical Engineering Jilin University Changchun 130061 P R. China State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 P. R. China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 P. R. China

We fabricated three phosphorescent blue organic light-emitting devices based on blue phosphor of iri-dium（Ⅲ） bis[（4,6-difluorophenyl）-pyridinato-N,C2＇]（Firpic） with different electron transporting layer（ETL） materialsBy analyzing efficiency curves and spectral characteristics, the significant effect of ETL on many aspects of deviceperformance was demonstrated. With optimized ETL, the characteristics of devices, such as voltage and efficiencywere significantly improved. Combined with a yellow phosphor of iridium（Ⅲ） bis（4-phenylthieno[3,2-c]pyridinato-N,C2＇） acetylacetonate（PO-01）, phosphorescent white organic light-emitting devices（PhWOLEDs） were ***, with an aim to promote the performance of the PhWOLEDs~ a thin layer of 4,4＇,4＂-tri（N-carbazolyl）-triphenylamine（TCTA） was introduced between two light emission layers, and the diffusion of excitons was *** outperformance device fabricated with 4,7-diphenyl-l,10-phenanthroline（Bphen） as the electron transportinglayer exhibited a peak current efficiency of 36.6 cd/A, a peak power efficiency of 19.2 lm/W, and the InternationalCommission on Illumination coordinates（0.37, 0.46）.

关键词： White organic light-emiRing device High efficiency Optimized electron transporting layer

Relationship between serum Dickkopf-1 and albuminuria in patients with type 2 diabetes

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World Journal of Diabetes 2021年第1期12卷 47-55页

作者： Ning-Ning Hou Cheng-Xia Kan Na Huang Yong-Ping Liu En-Wen Mao Yu-Ting Ma Fang Han Hong-XiSun Xiao-Dong Sun Department of Endocrinology Affiliated Hospital of Weifang Medical UniversityWeifang 261031Shandong ProvinceChina Department of Pathology Affiliated Hospital of Weifang Medical UniversityWeifang 261031Shandong ProvinceChina

BACKGROUND Diabetic kidney disease is a microvascular complication of diabetes with complex *** signaling-mediated renal fibrosis is associated with diabetic kidney ***-1,a negative regulator of Wingless,has been proven to participate in renal fibrosis,glucose metabolism,and ***,whether serum Dickkopf-1 levels are associated with diabetic kidney disease remains *** To assess the relationship between serum Dickkopf-1 levels and albuminuria in individuals with type 2 *** Seventy-three type 2 diabetes patients and 24 healthy individuals were enrolled in this case-control *** individuals were separated into normal albuminuria,microalbuminuria,and macroalbuminuria groups based on their urinary albumin/creatinine ratios(UACRs).Clinical characteristics and metabolic indices were *** Dickkopf-1 levels were determined by enzymelinked immunosorbent *** No significant difference in serum Dickkopf-1 levels was found between healthy individuals and the normal albuminuria ***,the levels in the microalbuminuria group were significantly lower than those in the normal albuminuria group(P=0.017),and those in the macroalbuminuria group were the *** analysis revealed that serum Dickkopf-1 levels were positively correlated with hemoglobin A1c level(r=0.368,P<0.01)and estimated glomerular filtration rate(r=0.339,P<0.01),but negatively correlated with diabetes duration(r=-0.231,P=0.050),systolic blood pressure(r=-0.369,P=0.001),serum creatinine level(r=-0.325,P<0.01),and UACR(r=-0.459,P<0.01).Multiple and logistic regression showed that serum Dickkopf-1 levels were independently associated with UACR(odds ratio=0.627,P=0.021).CONCLUSION Serum Dickkopf-1 levels are negatively associated with *** serum Dickkopf-1 levels could be a critical risk factor for albuminuria in diabetes.

关键词： Dickkopf-1 Albuminuria Diabetic kidney disease Type 2 diabetic mellitus Wingless Microalbuminuria