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Hydrothermal Synthesis, Characterization and Magnetic Properties of Rare Earth Iron Garnets Sm_3Fe_5O_(12) and Eu_3Fe_5O_(12)

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Chemical Research in Chinese Universities 2011年第5期27卷 715-719页

作者： GUO Li yuan Hong-ming huang Ke-ke yuan lin LIU Shao-kong FENG Shou-hua State Key Laboratory of Inorganic Synthesis ＆ Preparative Chemistry College of Chemistry Jilin University Changehun 130012 P. R. China

The rare earth iron garnets R3Fe5O12（R=Sm, Eu） were synthesized under mild hydrothermal conditions, and their crystal growth was found to be sensitive to alkalinity, reaction temperature and time. The as-prepared samples were characterized by powder X-ray diffraction（XRD）, scanning electron microscopy（SEM）, infrared spectra（IR） and Raman spectrum. The M vs. H loops and magnetic parameters have been traced with a vibrating sample magnetometer（VSM） and superconducting quantum interference devices（SQUIDs） magnetometer. We proposed the formation mechanisms and formulated a reasonable explanation for their growth habits. Different morphologic characteristics were observed by changing alkalinity in the reaction systems. The magnetic studies gave saturation magnetization（Ms） and Curie temperature（TC）. The magnetic behaviors of Sm3Fe5O12 and Eu3Fe5O12 in mild hydrothermal systems are comparable with those in high temperature solid state reactions.

关键词： Rare earth iron garnet Hydrothermal synthesis Magnetism

Clinical significance of hepatic artery variations originating from the superior mesenteric artery in abdominal tumor surgery

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Chinese Medical Journal 2013年第5期126卷 899-902页

作者： huang yuan LIU Chao lin Jin-ling Department of Gastroenterology Surgery First Affiliated Hospitalof Guangxi Medical University Nanning Guangxi 530021 China

Background Hepatic artery variations are frequent clinical characteristic course of variant hepatic arteries originating providing instructions for abdominal tumor surgery. occurrences. The aim of this study was to investigate the from the superior mesenteric artery for the purpose of Methods The course of variant hepatic arteries originating from the superior mesenteric artery was studied in 400 patients with liver cancer confirmed by digital subtraction angiography （DSA） and multi-slice spiral computed tomography angiography （MSCTA）, and 86 patients with gastric cancer confirmed by preoperative MSCTA between June 2008 and June 2010 in the First Affiliated Hospital of Guangxi Medical University. Results Hepatic artery variations originating from the superior mesenteric artery were noticed in 49 liver cancer patients and 14 gastric cancer patients （total 63 cases）, with a variation rate of 12.96%, including two cases （3.17%） where the hepatic arteries ran along the anterior pancreas, and 61 cases （96.83%） where the hepatic arteries ran along the posterior pancreas. Conclusions Hepatic artery variations originating from the superior mesenteric artery present as two types： the pre-pancreas type and the post-pancreas type with the latter predominating. This finding is of clinical significance in abdominal tumor surgeries where clearance of portal lymph nodes is needed.

关键词： variation hepatic artery tumor operation

Research of the Plasma Sulfide Layer Formed on the Nitrocarburizing Layer

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材料热处理学报 2004年第5期25卷 428-430页

作者： LIXin MAShi-ning HUChun-hua QIUJi huangyuan-lin KeyLaboratoryForRemanufacturing BeijingChina

Low-temperature sulfurizing after nitrocarburizing are compared with only low-temperature sulfurizing on the surface of CrMoCu alloyed cast iron, the surface morphologies and microstructures are investigated by SEM and EDS. Results show that under proper treatment parameters, there are sulfide layer on both of the surfaces, and can more easily obtain sulfide layers on the surface of nitrocarburizing. Forming mechanism of sulfides were also studied elementarily.

关键词：氮碳共渗渗硫 CrMoCu合金铸铁

Study on Properties of Ti(C,N)/TiN Multi-Element-layer Films Plus Nanometer Lubrication Dry Films

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材料热处理学报 2004年第05B期25卷 909-912页

作者： huangyuan-lin MAShi-ning LIChang-qing ZHUYou-li StateKeyLaboratoryforRemanufacturing Beijing100072China

Ti(C,N)/TiN multi-element-layer films was deposited on aluminium alloy substrates by using multi-arc ion plating. The microhardness of the films was 2000HV0.i which was nearly 21 times of that of the substrates. XRD analysis show that the main composition of the composite films system were Ti(C,N), TiN, Al3Ti, Al and a little Ti2N. The presence of MjTi new phase in the interface of the films/substrates indicated some metallurgical bonding between them, which implies higher adhesive strength of the films/substrates system. Pin-on-disc tests showed that the wear resistance of the substrates was improved substantially. However, the coefficient of friction of the films/substrate system was high (u=0.66), which resulted in the wear of the counterparts. To reduce the coefficient of friction, nanometer lubrication dry films was applied on top of the multi-element-layer films to form composite films system and subsequent wear tests showed that the resulting composite films led to reduction of the coefficient of friction from 0.66 to 0.16. Meanwhile, wear mass loss of the counterpart was reduced from 1.29 mg to 0.02 mg, so that increased wear resistance and reduced friction effects were achieved.

关键词：多电弧离子电镀法铝合金摩擦学纳米薄膜

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三层运输汽车专用车的研制

铁道车辆 2010年第5期48卷 23-26页

作者：黄元琳南车二七车辆有限公司产品开发部北京100072

介绍了三层运输汽车专用车的主要技术参数、结构特点和试验结果。

关键词：三层运输汽车专用车结构技术参数试验

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基于本体的XML查询及其优化机制

计算机应用研究 2006年第11期23卷 146-148页

作者：黄远林黄屹武汉科技大学计算机科学与技术学院湖北武汉430081 武汉大学计算机学院湖北武汉430072

介绍一种基于本体的非结构化信息访问机制,为现有系统应用中的非结构化信息提取提供统一的语义级解决方案。该方案克服了目前基于关键词检索方法所引起的信息冗余和信息不足,提供更为合理且更符合人们思维的查询方法与结果,从而有效地... 详细信息

介绍一种基于本体的非结构化信息访问机制,为现有系统应用中的非结构化信息提取提供统一的语义级解决方案。该方案克服了目前基于关键词检索方法所引起的信息冗余和信息不足,提供更为合理且更符合人们思维的查询方法与结果,从而有效地提高系统性能及其实际应用价值。介绍了该信息访问机制的整体框架,并重点介绍了信息访问语言FL-Plus、推理引擎及优化算法的实现。

关键词： F-Logic 语义查询信息检索

重型车辆传动箱轴承固定套失效分析及其表面复合强化处理

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金属热处理 2007年第2期32卷 94-96页

作者：黄元林朱有利马世宁装甲兵工程学院装备再制造技术国防科技重点实验室北京100072

对重型车辆轴承固定套进行了失效分析,并采用离子氮碳共渗-渗硫复合处理工艺对该45钢轴承固定套进行了表面改性处理。在MM-200型环-块式摩擦磨损试验机上考察了该复合渗层与对偶件———灰口铸铁对磨时的摩擦学性能,采用扫描电镜(SEM)... 详细信息

对重型车辆轴承固定套进行了失效分析,并采用离子氮碳共渗-渗硫复合处理工艺对该45钢轴承固定套进行了表面改性处理。在MM-200型环-块式摩擦磨损试验机上考察了该复合渗层与对偶件———灰口铸铁对磨时的摩擦学性能,采用扫描电镜(SEM)对磨损表面进行了形貌分析。试验结果表明,复合渗层与灰口铸铁对磨时的摩擦系数比未经处理的45钢有明显降低,由于表层的硫化物具有优良的减摩性能,而次表层高硬度的氮碳化合物层具有抗塑变、抗磨粒磨损作用,使复合处理后的45钢的耐磨性明显提高。

关键词：离子氮碳共渗离子渗硫轴承固定套摩擦磨损

Prediction and stratification for the surgical adverse events after minimally invasive esophagectomy:A two-center retrospective study

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World Journal of Gastroenterology 2025年第3期31卷 50-61页

作者： Qi-Hong Zhong Jiang-Shan huang Fei-Long Guo Jing-Yu Wu Mao-Xiu yuan Jia-Fu Zhu Wen-Wei lin Sui Chen Zhen-Yang Zhang Jiang-Bo lin Department of Thoracic Surgery Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina The Graduate School Fujian Medical UniversityFuzhou 350001Fujian ProvinceChina Department of Thoracic Surgery Affiliated Hospital of Jinggangshan UniversityJi’an 343000Jiangxi ProvinceChina

BACKGROUND Minimally invasive esophagectomy(MIE)is a widely accepted treatment for esophageal cancer,yet it is associated with a significant risk of surgical adverse events(SAEs),which can compromise patient recovery and long-term *** preoperative identification of high-risk patients is critical for improving *** To establish and validate a risk prediction and stratification model for the risk of SAEs in patients with *** This retrospective study included 747 patients who underwent MIE at two centers from January 2019 to February *** were separated into a train set(n=549)and a validation set(n=198).After screening by least absolute shrinkage and selection operator regression,multivariate logistic regression analyzed clinical and intraoperative variables to identify independent risk factors for SAEs.A risk stratification model was constructed and validated to predict the probability of *** SAEs occurred in 10.2%of patients in train set and 13.6%in the validation *** with SAE had significantly higher complication rate and a longer hospital stay after *** key independent risk factors identified included chronic obstructive pulmonary disease,a history of alcohol consumption,low forced expiratory volume in the first second,and low albumin *** stratification model has excellent prediction accuracy,with an area under the curve of 0.889 for the training set and an area under the curve of 0.793 for the validation *** The developed risk stratification model effectively predicts the risk of SAEs in patients undergoing MIE,facilitating targeted preoperative interventions and improving perioperative management.

关键词： Surgical adverse events Minimally invasive esophagectomy Esophageal cancer Stratification model Perioperative management

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高速列车铁基金属陶瓷制动闸片材料研究

铁道学报 2001年第3期23卷 29-32页

作者：石宗利杜心康李重庵黄元林兰州铁道学院土木工程系甘肃兰州730070 石家庄军械工程学院河北石家庄050003

采用粉末冶金工艺 ,通过对材料组元、成分、工艺等的实验研究 ,研制出铁基金属陶瓷摩擦材料。用 J0 2型摩擦实验机测试了该材料的摩擦系数、磨损率和摩擦稳定系数 ;用 MTS材料实验机、洛氏硬度计测试了材料的拉伸强度、压缩强度和硬度... 详细信息

采用粉末冶金工艺 ,通过对材料组元、成分、工艺等的实验研究 ,研制出铁基金属陶瓷摩擦材料。用 J0 2型摩擦实验机测试了该材料的摩擦系数、磨损率和摩擦稳定系数 ;用 MTS材料实验机、洛氏硬度计测试了材料的拉伸强度、压缩强度和硬度。结果表明 :材料具有高的摩擦系数 (0 .31) ,低的磨损率 (0 .0 0 2 2 mm/面次 )和高摩擦稳定系数 (88.9% ) ,以及良好的物理力学性能 :拉伸强度 (2 1.4MPa)、抗压强度 (133.5 MPa)和硬度 (4 5～ 6 5HRF)。因此 ,是有希望的高速列车制动闸片材料之一。

关键词：摩擦磨损性能高速列车铁基金属陶瓷制动闸片材料