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Journal of Iron and Steel Research International 2021年第8期28卷 1037-1046页

作者： jia-qiang jing Jie Guo Ba Li Shu-jun jia Yi Ren School of Oil and Gas Engineering Southwest Petroleum UniversityChengdu 610500SichuanChina Department of Structural Steels Central Iron and Steel Research InstituteBeijing 100081China State Key Laboratory of Metal Material for Marine Equipment and Application of Iron and Steel Research Institutes of Ansteel Group Corporation Anshan 114009LiaoningChina

The relationship between micro structure and corrosion behavior of high-grade pipeline steel under low-temperature conditions was comparatively investigated by the potentiodynamic polarization and electrochemical impedance spec-troscopy test combining with optical micrographs,scanning electron microscopy,transmission electron microscopy and electron back-scattered *** results showed that,compared with room and high temperature,low temperature could influence the corrosion behavior of high-grade pipeline steel,which means that the corrosion potential and current density decreased and the corrosion resistance increased ***,double layer structures of the interface became thicker and more *** low-temperature environment,acicular ferrite had the martensite/austenite constituents with less amount and smaller size,a higher density of low angle grain boundaries and smaller effective grain sizes compared with granular bainite,which demonstrated higher corrosion resistance.

关键词： Low temperature High-grade pipeline steel Corrosion behavior Resistance Acicular ferrite Granular bainite Martensite/austenite constituent

Determinatation of antioxidant properties of 4′-demethyl-4-deoxypodophyllotoxin ester

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Determinatation of antioxidant properties of 4′-demethyl-4-...

中国化学会第十五届全国有机分析及生物分析学术研讨会

作者： jia qiang Zhang,jing Xu,Xuan Tian~* (National Laboratory of Applied Organic Chemistry,Lanzhou University,Lanzhou 730000)

＜正＞Deoxypodophyllotoxin（1） and its related derivatives are well known to have pronounced antineoplastic, antiviral and antibacterium *** have been reported as an important new class of antioxidants, and they have... 详细信息

关键词： Antioxidative activity Nitroxides Deoxypodophyllotoxin

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职业生涯发展:高校就业指导工作的价值诉求

安庆师范学院学报（社会科学版） 2009年第6期28卷 59-62页

作者：秦佳晶湖州师范学院招生就业处浙江湖州313000

中国高校就业指导工作因长期游离于应有的价值观念与价值取向之外,导致就业指导收效甚微。基于舒伯的职业生涯发展理论及其教育意蕴,对照西方发达国家较成熟的就业理念与操作模式,高校就业指导工作应坚持以人为本的指导思想,建立促进人... 详细信息

中国高校就业指导工作因长期游离于应有的价值观念与价值取向之外,导致就业指导收效甚微。基于舒伯的职业生涯发展理论及其教育意蕴,对照西方发达国家较成熟的就业理念与操作模式,高校就业指导工作应坚持以人为本的指导思想,建立促进人的全面发展、协调发展和可持续发展的辅导理念与模式。

关键词：职业生涯就业指导辅导模式

Association between intra-pancreatic fat deposition and diseases of the exocrine pancreas: A narrative review

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World Journal of Gastroenterology 2025年第2期31卷 27-41页

作者： jing Ye jian-Guo Wang Rong-qiang Liu Qiao Shi Wei-Xing Wang Department of General Surgery Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina Department of Pancreatic Surgery Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina

Intrapancreatic fat deposition(IPFD)has garnered increasing attention in recent *** prevalence of IPFD is relatively high and associated with factors such as obesity,age,and ***,the pathophysiological mechanisms underlying IPFD remain unclear,with several potential contributing factors,including oxida-tive stress,alterations in the gut microbiota,and hormonal *** was found to be highly correlated with the occurrence and prognosis of exocrine pan-creatic *** imaging techniques remain the primary diagnostic approach for IPFD,an expanding array of biomarkers and clinical scoring systems have been identified for screening ***,effective treatments for IPFD are not available;however,existing medications,such as glucagon-like peptide-1 receptor agonists,and new therapeutic approaches explored in animal models have shown considerable potential for managing this *** paper reviews the pathogenesis of IPFD,its association with exocrine pancreatic disea-ses,and recent advancements in its diagnosis and treatment,emphasizing the significant clinical relevance of IPFD.

关键词： Intrapancreatic fat deposition Pancreatic steatosis Nonalcoholic fatty pancreas disease Pancreatitis Pancreatic cancer

两性表面活性剂与阴离子聚丙烯酰胺复配体系的抗盐性

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高分子学报 2015年第1期25卷 88-96页

作者：敬加强孙娜娜安云朋靳文博田震油气藏地质及开发工程国家重点实验室.西南石油大学成都610500 油气消防四川省重点实验室成都611731

通过单因素实验分析两性表面活性剂浓度、无机盐浓度及p H值对聚丙烯酰胺复配体系黏度的影响规律,应用SPSS软件对均匀实验结果进行非线性回归,得到复配体系黏度与聚合物浓度、两性表面活性剂浓度及无机盐浓度的定量关系式,进而理论分析... 详细信息

通过单因素实验分析两性表面活性剂浓度、无机盐浓度及p H值对聚丙烯酰胺复配体系黏度的影响规律,应用SPSS软件对均匀实验结果进行非线性回归,得到复配体系黏度与聚合物浓度、两性表面活性剂浓度及无机盐浓度的定量关系式,进而理论分析了各因素对复配体系抗盐性的影响规律.结果表明,当两性表面活性剂的浓度低于临界缔合浓度(CAC)时,复配体系的黏度变化不大;当其浓度高于CAC后,随着浓度的增加,体系黏度急剧增大;当其浓度达到聚合物饱和浓度(PSP),复配体系黏度达到最大值;当再进一步加入表面活性剂时,聚集体间的网状结构将被破坏,从而使体系黏度逐渐降低;无机盐对复配体系的作用具有双重性,低浓度盐将促使体系黏度升高,中高浓度盐则会导致体系黏度降低;不同p H值条件下,复配体系的抗盐能力顺序为碱性(p H=11.4)>酸性(p H=2.8)>中性(p H=7).

关键词：两性表面活性剂 HPAM 无机盐 pH 黏度抗盐性均匀实验非线性回归

Effects of the extrusion parameters on microstructure,texture and room temperature mechanical properties of extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei Xiao Zhiyong Kan jing Guo qiang Li Wanqi Jie State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,texture,and mechanical properties of the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy were investigated at different extrusion temperatures(260 and 320℃),extrusion ratios(10:1,15:1,and 30:1),and extrusion speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusion were much finer than that of the homogenized alloy,and the second phase showed streamline distribution along the extrusion direction(ED).With extrusion temperature increased from 260 to 320℃,the microstructure,texture,and mechanical properties of alloys changed *** dynamic recrystallization(DRX)degree and grain sizes enhanced as the extrusion ratio increased from 10:1 to 30:1,and the strength gradually decreased but elongation(EL)*** the extrusion speed increased from 3 to 6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** alloy extruded at 260℃ with extrusion ratio of 10:1 and extrusion speed of 3 mm/s showed the tensile yield strength(TYS)of 213 MPa and EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found that the grain boundary strengthening and dislocation strengthening played major roles among strengthening *** results provide some guidelines for enlarging the industrial application of extruded Mg-RE alloy.

关键词： Mg-rare earth alloys extrusion temperature extrusion ratio extrusion speed strengthening mechanisms

Nomogram for overall survival in ampullary adenocarcinoma using the surveillance,epidemiology,and end results database and external validation

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World Journal of Clinical Oncology 2025年第2期16卷 36-51页

作者： jia Yang Zi-Yi Wang jing Chen Yao Zhang Lei Chen Department of Gastroenterology The First Affiliated Hospital of Army Medical UniversityChongqing 400038China Department of Epidemiology College of Preventive MedicineArmy Medical UniversityChongqing 400038China

BACKGROUND Ampullary adenocarcinoma is a rare malignant tumor of the gastrointestinal ***,only a few cases have been reported,resulting in limited information on *** To develop a dynamic nomogram using internal and external validation to predict survival in patients with ampullary *** Data were sourced from the surveillance,epidemiology,and end results stat *** patients in the database were randomized in a 7:3 ratio into training and validation *** Cox regression univariate and multivariate analyses in the training group,we identified independent risk factors for overall survival and cancer-specific survival to develop the *** nomogram was validated with a cohort of patients from the First Affiliated Hospital of the Army Medical *** For overall and cancer-specific survival,12(sex,age,race,lymph node ratio,tumor size,chemotherapy,surgical modality,T stage,tumor differentiation,brain metastasis,lung metastasis,and extension)and 6(age;surveillance,epidemiology,and end results stage;lymph node ratio;chemotherapy;surgical modality;and tumor differentiation)independent risk factors,respectively,were incorporated into the *** area under the curve values at 1,3,and 5 years,respectively,were 0.807,0.842,and 0.826 for overall survival and 0.816,0.835,and 0.841 for cancer-specific *** internal and external validation cohorts indicated good consistency of the *** The dynamic nomogram offers robust predictive efficacy for the overall and cancer-specific survival of ampullary adenocarcinoma.

关键词： Ampullary adenocarcinoma Dynamic nomogram Gastrointestinal tract Surveillance Epidemiology End results database Survival rate

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong jing-jing Hu Yan Yu Xiao-Li Li Xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie Zhu Xiao-jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

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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一种基于双边滤波的高动态范围图像再现

齐鲁工业大学学报 2016年第6期30卷 6-11页

作者：李效周赵洋贾景强曹前齐鲁工业大学印刷与包装工程学院山东济南250353

针对高动态范围图像再现算法中分层函数和阶调映射函数的非适性引起细节丢失和饱和度过度压缩的问题,采用了一种基于双边滤波处理和细节优先的高动态范围图像阶调再现方法。该算法首先采用优化的视觉响应曲线作为阶调映射函数,动态的映... 详细信息

针对高动态范围图像再现算法中分层函数和阶调映射函数的非适性引起细节丢失和饱和度过度压缩的问题,采用了一种基于双边滤波处理和细节优先的高动态范围图像阶调再现方法。该算法首先采用优化的视觉响应曲线作为阶调映射函数,动态的映射亮度范围至低动态范围媒介;采用改进的双边滤波器作为分层函数,基于视觉可识别色差补偿细节信息。测试结果表明,该算法所得图像能够正确地表现更多可见细节信息,改善过度压缩动态范围,消除光晕现象产生。

关键词：高动态范围图像阶调映射双边滤波细节保持