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Microstructure of Fe-Based Alloy Composite Coatings Reinforced by Ti(C_(0.3)N_(0.7)) Particles Through Laser Cladding Technology

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Journal of Iron and Steel Research International 2013年第8期20卷 78-82页

作者： qi yong-tian CAO Zhao-xia SHENG Li-ying CAO Run-ping Inner Mongolia Baotou Vocational and Technical College

Fe-based alloy layer reinforced by Ti（C,N） particles was produced on the surface of cast steel. X ray dif fraction （XRD） was used for phase identification in the composite coating. The microstructure of laser cladding layer was analyzed by means of optical microscope （OM）, electron probe microscope analyzer （EPMA）, scanning electron microscope （SEM） and transmission electron microscope （TEM）. The results show that Ti（C0.3 N0.7 ） particle is in-troduced by an in situ metallurgical reaction of TiN particle and graphite powder in the process of laser cladding. The shape of lots of Ti（C0.3 N0.7） particle is irregular. The sizes of Ti（C0. 3N0. 7） particles range from 0. 1 to 6.0 μm, and they are dispersed evenly in the matrix, which is fine dendritic or cellular crystal. A new kind of phase named Ti（C0.3 N0. 7 ） parti-cles are tightly bonded with α-Fe microstructure, and there is a clean and smooth phase interface between ceramic re-inforcement phase and the matrix.

关键词： Ti(C0.3 N0.7 ) particle TiN laser cladding microstructure

A Knowledge Model-and Growth Model-Based Decision Support System for Wheat Management

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Agricultural Sciences in China 2003年第11期2卷 1212-1220页

作者： ZHU Yan, CAO Wei-xing, WANG qi-meng, tian yong-chao and PAN Jie(Key Laboratory of Crop Growth Regulation , Ministry of Agriculture/Nanjing Agricultural University, Nanjing 210095 , P. R. China) Key Laboratory of Crop Growth Regulation Ministry of Agriculture/Nanjing Agricultural University Nanjing 210095 P. R. China

By applying the system analysis principle and mathematical modeling technique to knowledge expression system for crop cultural management, the fundamental relationships and quantitative algorithms of wheat growth and management indices to variety types, ecological environments and production levels were analysed and extracted, and a dynamic knowledge model with temporal and spatial characters for wheat management(WheatKnow)was developed. By adopting the soft component characteristics as non language relevance , re-utilization and portable system maintenance. and by further integrating the wheat growth simulation model(WheatGrow)and intelligent system for wheat management, a comprehensive and digital knowledge model, growth model and component-based decision support system for wheat management(MBDSSWM)was established on the platforms of Visual C++ and Visual Basic. The MBDSSWM realized the effective integration and coupling of the prediction and decision-making functions for digital crop management.

关键词： Wheat management Knowledge model Growth model Soft component Decision support system

原位生成Ti(C、N)/Fe基复合熔覆层的微观结构

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中国表面工程 2011年第4期24卷 38-42,F0003页

作者：齐勇田邹增大包头职业技术学院内蒙古包头014030 山东大学材料学院济南250061

用高能集中横流式的二氧化碳激光束作为诱导热源，在铸钢表面进行改性处理，形成了含有碳氮化钛增强粒子的铁基熔覆层。利用X射线衍射仪（XRD）、电子探针（EPMA）、扫描电镜（SEM）、能谱仪（EDX）、透射电镜（TEM）和选区电子衍射花样... 详细信息

用高能集中横流式的二氧化碳激光束作为诱导热源，在铸钢表面进行改性处理，形成了含有碳氮化钛增强粒子的铁基熔覆层。利用X射线衍射仪（XRD）、电子探针（EPMA）、扫描电镜（SEM）、能谱仪（EDX）、透射电镜（TEM）和选区电子衍射花样（SAED）等手段对复合熔覆层的微观结构及它们中第二相粒子的成分、形貌和尺寸进行了分析和研究。试验结果表明：先前加入的颗粒状TiN与石墨粉在激光熔覆过程中发生了化合反应，原位生成了新的颗粒状Ti（C0.3N0.7）强化相。复合熔覆层的基体组织由树枝胞状晶α—Fe和Ti（C0.3N0.7）颗粒硬质相共同组成，新相Ti（C0.3N0.7）颗粒的形貌特征多呈不规则形状，大小在0．1～6．0μm之间，它们较均匀地弥散分布在熔覆层α—Fe基体上。硬质相颗粒Ti（C0.3N0.7）与熔覆层基体α-Fe之间结合紧密，界面干净光滑。

关键词：碳氮化钛原位反应激光熔覆显微组织

超声作用下Mg-Zn-Al钎料的润湿与铺展

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材料工程 2016年第7期44卷 43-48页

作者：李国栋栗卓新古金茂齐勇田北京工业大学材料科学与工程学院北京100124 北京星航机电装备有限公司北京100074

在大气环境中,对Mg-Zn-Al钎料进行超声振动作用下的铺展,超声时间分别为1,2,3,4s,并与钎剂作用下的钎料铺展行为进行对比。采用体视显微镜观察钎料在超声及钎剂作用下的铺展形貌。采用光学显微镜观察钎料铺展初始端、铺展末端及铺展后... 详细信息

在大气环境中,对Mg-Zn-Al钎料进行超声振动作用下的铺展,超声时间分别为1,2,3,4s,并与钎剂作用下的钎料铺展行为进行对比。采用体视显微镜观察钎料在超声及钎剂作用下的铺展形貌。采用光学显微镜观察钎料铺展初始端、铺展末端及铺展后钎料的微观组织形貌。结果表明:超声振动作用下的Mg-Zn-Al钎料沿基体表面作受迫铺展,声空化作用于液态钎料产生的冲击波可以破碎基体表面的氧化膜,使液态钎料与母材发生润湿,母材溶解的深度仅有0.12mm。超声时间为2s时,钎料铺展面积最大。超声声空化作用破碎液态钎料在凝固期间产生的α-Mg固溶相及MgZn共晶相,使铺展后的钎料显微组织得到细化。

关键词：超声振动镁合金钎料铺展润湿

Pulp health and calcific healing of a complicated crown–root fracture with additional root fracture in a maxillary incisor: A case report

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World Journal of Clinical Cases 2025年第3期13卷 42-49页

作者： Na Li Yue-Yue Ren Ying Tang qi Yang tian-tian Meng Song Li Jing Zhang Stomatological Hospital and College Anhui Medical UniversityHefei 230032Anhui ProvinceChina Department of Endodontics The Affiliated Stomatological Hospital of Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina

BACKGROUND Complicated crown–root fracture (CRF) involves severe injury to the crown, root,and pulp, and may be accompanied by multiple root fractures. The loss of a toothhas lifelong consequences for children and teenagers, but the maintenance of pulphealth and the calcific healing of multiple root fractures are rarely reported in *** SUMMARY This case reports healing of a permanent tooth with complicated crown–root andadditional root fractures, in which pulp health was maintained. A 10-year-old girlfell and fractured the root of her maxillary left central incisor at the cervical *** the coronal fragment was repositioned, the tooth was splinted until thetooth was no longer mobile, 2 years later. Eight years after treatment, the toothhas remained asymptomatic with vital pulp and localized gingival ***-beam computed tomography revealed not only calcified healing of the CRFbut also spontaneous healing in an additional undiagnosed root fracture. Thefracture line on the enamel could not be healed by hard tissue and formed agroove in the cervical crown. It was speculated that the groove was related to thelocalized gingival *** This case provides a clinical perspective of the treatment of a tooth with acomplicated CRF and an additional root fracture.

关键词： Complicated crown-root fracture Multiple root fracture Spontaneous healing Cone-beam computed tomography Long-term follow-up Case report

Ti(C、N)陶瓷颗粒对镍基激光熔覆层组织和性能影响

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中国表面工程 2008年第2期21卷 26-30页

作者：齐勇田施瀚超山东大学材料科学学院济南250061

采用CO2激光熔覆技术在铸造半钢轧辊表面上制备了含有Ti（C、N）增强相的镍基涂层，对重量比分别为20％、30％、40％的Ti（C、N）颗粒的3种熔覆层进行了研究。用X-射线衍射仪、扫描电镜和光学显微硬度计对复合熔覆层中强化相粒子的成分... 详细信息

采用CO2激光熔覆技术在铸造半钢轧辊表面上制备了含有Ti（C、N）增强相的镍基涂层，对重量比分别为20％、30％、40％的Ti（C、N）颗粒的3种熔覆层进行了研究。用X-射线衍射仪、扫描电镜和光学显微硬度计对复合熔覆层中强化相粒子的成分、形貌、尺寸及熔覆层的显微硬度进行分析。结果表明：Ti（C、N）相在（200）晶面的衍射峰强度最高，形貌呈近似圆形、菱形等不规则形状，大小在0．5-5．0μm之间；随着Ti（C、N）含量的增加，熔覆层的硬度明显提高，这主要是由于Ti（C、N）陶瓷颗粒在熔覆层中弥散和细晶强化共同作用的结果。

关键词： Ti(C、N) 激光熔覆显微硬度组织

Gd_3Al_(2-x)Ga_x系合金磁热效应的研究

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稀土 2016年第4期37卷 96-100页

作者：生利英曹朝霞黄焦宏齐勇田宋博宇包头职业技术学院材料系内蒙古包头014030 包头稀土研究院内蒙古包头014030

对经真空高频磁悬浮炉熔炼、900℃30 h热处理的Gd_3Al_(2-x)Ga_x(x=0,0.1,0.2,0.3)系列合金的组织结构和磁热效应进行了研究。研究发现,Gd_3Al_(2-x)Ga_x系列合金保持了Gd3Al2的简单正方晶体结构,热处理后基相Gd_3Al_2的含量增加,随着G... 详细信息

对经真空高频磁悬浮炉熔炼、900℃30 h热处理的Gd_3Al_(2-x)Ga_x(x=0,0.1,0.2,0.3)系列合金的组织结构和磁热效应进行了研究。研究发现,Gd_3Al_(2-x)Ga_x系列合金保持了Gd3Al2的简单正方晶体结构,热处理后基相Gd_3Al_2的含量增加,随着Ga含量的增加,Gd_3Al_(2-x)Ga_x合金的居里温度变化在1 K^2 K之间,在1.5 T的外加磁场下,△S_m-T曲线半峰宽几乎不变,Gd_3Al_(1.8)Ga_(0.2)合金的最大磁熵变最大,超过Gd_3Al_2的最大磁熵变30%。少量Ga替代Al可以提高Gd_3Al_2合金的磁热效应。

关键词： Gd3Al2-xGax 居里温度磁熵变晶体结构

Anlotinib-induced sick sinus syndrome:Two case reports

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World Journal of Clinical Cases 2025年第6期13卷 30-34页

作者： Cheng-Feng Fu Li-Fen Yang Lei tian Song Deng qi Zhang Biao Yao Department of Oncology Tongren People’s HospitalTongren 554300Guizhou ProvinceChina Department of Oncology Guizhou Provincial People’s HospitalGuiyang 550000Guizhou ProvinceChina

BACKGROUND This manuscript describes the first known cases of sick sinus syndrome(SSS)associated with the use of anlotinib in non-small cell lung cancer patients,highlighting the need for increased vigilance and cardiac *** SUMMARY Two patients with non-small cell lung cancer developed SSS after 15 months and 5 months of anlotinib treatment,respectively,presenting with syncope and *** confirmed SSS,and different treatment approaches were taken for each *** patient received a dual-chamber permanent pacemaker,while the other discontinued the medication and experienced symptom *** Anlotinib can induce SSS,suggesting that cardiac monitoring is crucial during anlotinib *** management strategies are necessary for affected individuals.

关键词： Lung cancer Anlotinib Sick sinus syndrome Cardiac pacemaker Adverse drug reaction Case report

Gut microbiota shifts in hepatitis B-related portal hypertension after transjugular intrahepatic portosystemic shunt:Mechanistic and clinical implications

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World Journal of Gastroenterology 2025年第3期31卷 134-137页

作者： qi-Rong Jiang Da-Wu Zeng Department of Hepatology Hepatology Research InstituteThe First Affiliated HospitalFujian Medical UniversityFuzhou 350005Fujian ProvinceChina Department of Infectious Diseases The First Affiliated Hospital of Fujian Medical UniversityFuzhou 350004Fujian ProvinceChina

In this article,we provide commentary on the recent article by Zhao et *** focus on the shifts in the gut microbiota of patients with hepatitis B virus(HBV)-associated cirrhosis/portal hypertension(PH)following transjugular intrahepatic portosystemic shunt(TIPS)and the implications for understanding the mechanisms,diagnosis,and *** comparing the gut microbiota composition and dynamic changes before and after TIPS in patients with and without hepatic encephalopathy,the authors found an increase in non-probiotic bacteria in those who developed hepatic encephalopathy post-TIPS,with Morganella species present only in the hepatic encephalopathy *** gut microbiota changes post-TIPS among patients without the occurrence of hepatic encephalopathy suggest potential therapeutic benefits through prophylactic microbiome ***,the specific gut microbiota alterations may hold promise to predict the risk of hepatic encephalopathy in individuals undergoing TIPS for HBVrelated *** these promising findings,future studies are needed to address limitations,including a small sample size,a relatively short evaluation period for gut microbiota alterations,the absence of data on dynamic alterations in gut microbiota post-TIPS and their correlation with blood ammonia levels,and the lack of validation in animal *** conclusion,Zhao et al's study has shed new light on the link of gut microbiota with post-TIPS hepatic encephalopathy,potentially through the intricate gut-liver axis,and has important clinical implications for improving the management of patients with HBV-related PH.

关键词： Hepatitis B virus Cirrhosis Portal hypertension Hepatic encephalopathy Transjugular intrahepatic portosystemic shunt Gut microbiota