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Nitrogen-rich porphyrinic metal-organic frameworks synthesized by postsynthetic metathesis: from inert material to active catalyst

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Science China Chemistry 2016年第8期59卷 975-979页

作者： Dahuan Liu xuan Wang Ying-Pin Chen Shuai Yuan Chongli Zhong Hong-cai Zhou Department of Chemistry Texas A&M University College Station Texas 77843-3255 USA State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China Department of Material Science and Engineering Texas A&M University College Station Texas 77842 USA

With the aid of a postsynthetic metathesis method, an inert nitrogen-rich porphyrinic metal-organic framework can exhibit a high catalytic activity in one-pot deacetalization-Knoevenagel condensation reaction.

关键词： metal-organic frameworks porous coordination network post-synthetic metathesis catalysis tetrazolate

Therapeutic effect of Keap1-Nrf2-ARE pathway-related drugs on age-related eye diseases through anti-oxidative stress

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International Journal of Ophthalmology(English edition) 2021年第8期14卷 1260-1273页

作者： Zi-Yan cai Meng-Die Fu Ke Liu xuan-Chu Duan Department of Ophthalmology the Second Xiangya Hospital of Central South UniversityChangsha 410011Hunan ProvinceChina Department of Ophthalmology Changsha Aier Eye HospitalChangsha 410011Hunan ProvinceChina

Age-related eye diseases,including cataract,glaucoma,diabetic retinopathy(DR),and age-related macular degeneration(AMD),are the leading causes of vision loss in the *** studies have shown that the occurrence and development of these diseases have an important relationship with oxidative stress in the *** Keap1-Nrf2-ARE pathway is a classical pathway that resists oxidative stress and inflammation in the *** pathway is also active in the development of age-related eye diseases.A variety of drugs have been shown to treat agerelated eye diseases through the Keap1-Nrf2-ARE(Kelch-like ECH-Associating protein 1-nuclear factor erythroid 2 related factor 2-antioxidant response element)*** review describes the role of oxidative stress in the development of age-related eye diseases,the function and regulation of the Keap1-Nrf2-ARE pathway,and the therapeutic effects of drugs associated with this pathway on age-related eye diseases.

关键词： oxidative stress Keap1-Nrf2-ARE pathway age-related eye diseases

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组合缓冲约束下的多目标混合流水线节能调度

郑州大学学报（工学版） 2025年第1期46卷 17-25页

作者：轩华耿祝新李冰郑州大学管理学院河南郑州450001

为解决生产阶段间带有无限缓冲和阻塞两种中间缓冲约束的混合流水线节能调度问题,考虑不相关并行机和多时间约束建立数学模型,结合问题特征提出一种改进多目标模因算法以同时最小化最大完工时间和机器总能耗。采用基于不相关机器分配的... 详细信息

为解决生产阶段间带有无限缓冲和阻塞两种中间缓冲约束的混合流水线节能调度问题,考虑不相关并行机和多时间约束建立数学模型,结合问题特征提出一种改进多目标模因算法以同时最小化最大完工时间和机器总能耗。采用基于不相关机器分配的矩阵编码方案,利用基于Tent混沌映射的混合初始化策略生成初始元胞数组,全局优化算子应用基于参数的自适应遗传策略改进的非支配排序遗传算法,局部增强搜索算子应用一种融合自适应选择邻域搜索和多目标模拟退火的搜索策略以提高算法搜索能力。通过24种不同规模问题的算例实验,验证了所提算法求解该问题的有效性和优越性。实验结果表明:改进多目标模因算法在平均运行时间241.26 s内得到的平均IGD值为47.89,平均SP值为857.25,均低于其他3种对比算法。改进多目标模因算法所求解集具有较好的收敛性、多样性和分布性。

关键词：混合流水线改进多目标模因算法组合缓冲约束不相关并行机多目标优化节能调度

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Evaporation Characteristics and Morphological Evolutions of Fuel Droplets After Hitting Different Wettability Surfaces

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Journal of Bionic Engineering 2023年第2期20卷 734-747页

作者： Yanling Chen Liang Guo Ningning cai Wanchen Sun Yuying Yan Degang Li Han Wang Rong xuan State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025China School of Business and Management Jilin UniversityChangchun130012China Faculty of Engineering University of NottinghamNottinghamNG72RDUK

To solve the wall-wetting problem in internal combustion engines,the physical and chemical etching methods are used to prepare different wettability surfaces with various *** evaporation characteristics and morphological evolution processes of diesel and n-butanol droplets after hitting the various surfaces are *** results show that the surface microstructures increase the surface roughness(Ra),enhancing the oleophilic property of the oleophilic *** with n-butanol droplets,the same surface shows stronger oleophobicity to diesel *** a droplet hits an oleophilic property surface with a lower temperature,the stronger the oleophilicity,the shorter the evaporation *** oleophilic surfaces,larger Ra leads to a higher Leidenfrost temperature(TLeid).The low TLeid caused by enhanced oleophobicity,dense microstructures and increased convex dome height facilitates droplet rebound and promotes the evaporation of the wall-impinging droplets into the *** evaporation rate of the droplets is not only related to the characteristics of the solid surfaces and the fuel droplets but also affected by the heat transfer rate to the droplets in different boiling *** spreading diameter of a droplet on an oleophobic surface varies significantly less with time than that on an oleophilic surface under the same surface temperature.

关键词： Fuel droplets Wettability Evaporation time Leidenfrost temperature Morphological evolutions

Complete colonic duplication presenting as hip fistula in an adult with pelvic malformation:A case report

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World Journal of Clinical Cases 2022年第30期10卷 11037-11043页

作者： xuan cai Jing-Tao Bi Zhi-Xue Zheng Ya-Qi Liu Department of General Surgery Beijing Jishuitan HospitalBeijing 100035China

BACKGROUND Alimentary tract duplication(ATD) is a rare congenital ***,a case of ATD with a complete colonic duplication isolated in the abdominal cavity with a fistula and multiple malformations is very *** characteristics show the variability of this disease and explain why it tends to be challenging to diagnose and *** SUMMARY A 25-year-old woman with a history of a fistula opening in her right hip since birth presented with the irregular discharge of foul fluid from the fistula and intermittent abdominal ***-enhanced computed tomography and magnetic resonance imaging findings revealed a duplicated tube isolated in her abdominal pelvic cavity along with a pelvic malformation and double *** foot radiographic examination showed pes *** surgery,the tube appeared to be an almost complete colonic structure and was verified to be connected to the *** of the involved tissue and fistula were removed,and the defect in the pelvic floor was closed by suturing after *** 8 mo,the postoperative follow-up has been *** ATD may be a differential diagnosis in sinus tract *** combined with open surgery is a viable treatment option.

关键词： Abdominal pain Colonic duplication Computed tomography Hip fistula Pelvic malformation Laparoscopy Case report

Moderated crevice corrosion susceptibility of Ti6Al4V implant material due to albumin-corrosion interaction

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Journal of Materials Science & Technology 2022年第14期109卷 209-220页

作者： Jing Wu Meng Li Chuanchuan Lin Pengfei Gao Rui Zhang xuan Li Jixi Zhang Kaiyong cai Key Laboratory of Biorheological Science and Technology Ministry of EducationCollege of BioengineeringChongqing UniversityChongqing 400044China

Localized corrosion of metallic biomaterials is a concerning problem for implant *** the present work,the interaction between localized corrosion of Ti6Al4V implant material and adsorption of bovine serum albumin(BSA)was investigated by electrochemical tests,surface morphological and compositional *** artificial crevice was set up on the Ti6Al4V surface to simulate the crevice corrosion of metallic *** results show that the BSA adsorption is regulated by the heterogeneous metallic ion release resulted from the crevice *** negatively charged BSA prefers to aggregate at the interior of artificial crevice due to electrostatic interaction with the concentrated metallic cations in the *** return,the non-uniform BSA adsorption can decrease the crevice corrosion susceptibility of the Ti6Al4V implant material,even though the presence of BSA accelerates the dissolution of passive *** the Ti6Al4V alloys with artificial crevice,stable localized corrosion occurs after 96 h of immersion in the PBS free of BSA while no stable localized corrosion can be determined in the presence of 4%*** is deduced that the presence of BSA can reduce the surface potential discrepancy between the crevice interior and the crevice *** disclosed mechanism of albumin-corrosion interaction is vital to the localized corrosion control of metallic implants in clinical use.

关键词： Titanium alloy Albumin Electrochemistry Localized corrosion Protein adsorption

A DEM fusion method for ascending and descending orbit StereoSAR DEMs in complicated mountain areas considering SAR echo intensity

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Journal of Mountain Science 2021年第1期18卷 101-110页

作者： cai Guo-lin SHEN Dong ZHANG Ao-li YU Hai-hua ZHANG xuan-yu Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu 610000China Kunming Engineering Corporation Limited Power ChinaKunming 650000China

To extract the high-quality DEM in complicated mountain areas,a DEM fusion method for ascending and descending orbit StereoSAR DEMs considering Synthetic Aperture Radar(SAR)echo intensity is *** the analysis for the influence of terrain features and SAR side-looking imaging characteristics on radar echo intensity and DEM accuracy,four Terras AR-X images with the stripmap mode and the 3 m spatial resolution covering a certain area of Maoxian County,Sichuan Province,China,was selected as the experimental *** technology was used to extract the ascending orbit StereoSAR DEM and the descending orbit StereoSAR DEM,respectively,and the corresponding radar echo intensity map was ***,while comparing the radar echo intensity corresponding to the same point position,DEM fusion was carried out,and the accuracy of DEM before and after the fusion was analyzed with the ground points measured by GNSS-RTK as reference ***,a high-quality DEM with a 3 m spatial resolution in the experimental area was *** DEM accuracy was improved on all slopes,and the mean absolute deviation(MAD)improved to 4.798 m,the standard deviation(SD)improved to 6.087 m and the LE90 improved to 40.48 *** experimental results indicate that the fusion method of highresolution ascending and descending orbit StereoSAR DEMs considering SAR echo intensity can effectively extract DEM with high accuracy and reliability,which can provide technical support for obtaining highquality terrain information in similar areas.

关键词： Mountain areas StereoSAR Ascending orbits Descending orbits DEM fusion SAR echo intensity

Red imported fire ants(Hymenoptera:Formicidae)cover inaccessible surfaces with particles to facilitate food search and transportation

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Insect Science 2021年第6期28卷 1816-1828页

作者： Chao Wen Jian Chen Wen-Quan Qin xuan Chen Jia-Cheng cai Jun-Bao Wen Xiu-Jun Wen cai Wang Guangdong Key Laboratory for Innovation Development and Utilization of Forest Plant Germplasm College of Forestry and Landscape ArchitectureSouth China Agricultural UniversityGuangzhou510642China Biological Control of Pests Research Unit Agricultural Research ServiceU.S.Department of AgricultureStonevilleMS 38776USA Department of Biology Salisbury UniversitySalisburyMD 21801USA Department of Mathematics and Computer Science Salisbury UniversitySalisburyMD 21801USA Beijing Key Laboratory for Forest Pest Control College of ForestryBeijing Forestry UniversityBeijing100083China

Eusocial insects have evolved diverse particle-use behaviors.A previous study reported that red imported fire ants,Solenopsis invicta Buren,deposited soil particles on substances treated with essential balm,a fire ant *** hypothesized that *** modifies inaccessible surfaces by covering them with soil particles to facilitate food search and ***,laboratory experiments were conducted to study the particle-covering behavior *** in response to viscose surfaces or surfaces treated with essential balm or liquid paraffin in the presence of real food(sausage)or non-food objects(acrylic plates).*** workers deposited significantly more soil particles on these three types of treated surfaces than on untreated *** addition,significantly more particles were relocated on viscose and parafTin-smeared surfaces in the presence of food than in the presence of non-food *** particle-covering behavior on viscose surfaces was also observed in the ***,when no soil particles were available,ants searched and transported food on viscose surfaces only if the surfaces were artificially covered with sufficient quantities of soil particles but could not do so on viscose surfaces without soil particles or with insutTicient quantities of soil *** addition,ants actively relocated particles to cover viscose surfaces if the transportation distance was within 200 mm,whereas significantly fewer particles were relocated at longer transportation distances(400 mm).Our study provides a novel example of particle use by fire ants during foraging.

关键词： eusocial insect Fomicidae foraging particle-covering behavior Solenopsis invicta

Direct one-pot synthesis of zolimidine pharmaceutical drug and imidazo [1,2-a] pyridine derivatives via I_2/CuO-promoted tandem strategy

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Chinese Chemical Letters 2015年第7期26卷 881-884页

作者： Qun cai Mei-cai Liu Bi-Ming Mao xuan Xie Feng-Cheng Jia Yan-Ping Zhu An-Xin Wu Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University

An efficient one-pot synthetic protocol was developed for the synthesis of imidazo[ 1,2-a]pyridines from easily available starting materials： Aromatic ketones, α/βunsaturated ketones,β-keto esters and 2- aminopyridines. The present reaction proceeded well in MeOH under the media of I2/CuO. By using this method, the marketed drug zolimidine could be prepared easily with 95% yield. All these target products were characterized by NMR, HRMS and IR spectra. Furthermore, the target compound 3fa was determined bv X-ray crystallographic analysis.

关键词： 2-AminopyridinesAromatic ketoneslmidazo[ 1 2-a]pyridines ZolimidineOne-pot