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一类二阶非线性p-Laplace边值问题的三个正解(英文)

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西北师范大学学报（自然科学版） 2010年第3期46卷 10-14页

作者：吴红萍西北师范大学数学与信息科学学院甘肃兰州730070

利用不动点定理,得到了p-Laplace非线性边值问题(φp(u′))′+a(t)f(t,u,u′)=0,αφp(u(0))-βφp(u′(0))=0,γφp(u(1))+δφp(u′(1))=0三个正解存在的充分条件,并给出了一个实例.

关键词： p-Laplace算子边值问题不动点正解

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一类二阶边值系统的3个正解

烟台大学学报（自然科学与工程版） 2009年第2期22卷 89-92页

作者：吴红萍西北师范大学数学与信息科学学院甘肃兰州730070

利用Williams leggett定理研究Sturm-Liouville二阶边值系统u"(t)+f(u(t),v(t))=0,v"(t)+g(u(t),v(t))=0,α1u(0)-β1u'(0)=0,γ1u(1)+δ1u'(1)=0,α2v(0)-β2v'(0)=0,γ2v(1)+δ2v'(1)=0.得到了至少有3个正解的存在性结果.

关键词：二阶方程组边值问题正解

一类三阶三点非齐次边值问题的两个正解(英文)

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西北师范大学学报（自然科学版） 2012年第6期48卷 9-12页

作者：吴红萍西北师范大学数学与统计学院甘肃兰州730070

讨论三阶三点非齐次边值问题{u″′(t)+a(t)f(u(t))=0,0

关键词：三阶三点边值问题不动点定理正解

出现保障延误时间的可修系统稳态可用度的评定

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浙江大学学报（理学版） 2006年第3期33卷 268-271页

作者：张帼奋武洪萍浙江大学数学系浙江杭州310027

考虑可修的单元产品在出现故障时,由于种种原因,故障不能得到及时维修,形成了一段保障延误时间.于是这一更新过程为:正常工作(直到出现故障)-保障延误-故障维修-正常工作…….假设工作时间、保障延误时间均服从指数分布,故障维修时间服... 详细信息

考虑可修的单元产品在出现故障时,由于种种原因,故障不能得到及时维修,形成了一段保障延误时间.于是这一更新过程为:正常工作(直到出现故障)-保障延误-故障维修-正常工作…….假设工作时间、保障延误时间均服从指数分布,故障维修时间服从对数正态分布,用经典方法和广义p值方法给出了可用度的置信下限.

关键词：可用度广义p值法置信下限

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激发态Rb原子间的碰撞能量转移

光谱学与光谱分析 2009年第8期29卷 2038-2041页

作者：吴红萍郭启存戴康沈异凡新疆大学物理科学与技术学院新疆乌鲁木齐830046

脉冲激光器激发Rb原子到5P1/2态,通过碰撞能量转移Rb(5P1/2)+Rb(5S1/2)Rb(5P3/2)+Rb(5S1/2)产生5P3/2原子,研究了5P1/2+5P1/2,5P3/2+5P3/2,5P1/2+5P3/2的碰撞能量合并产生态的过程。5P1/2态原子密度利用Rb空心阴极灯通过光学吸收方法得到,而5P3/2态密度通过5P3/25S1/2(D2线)与5P1/25S1/2(D1线)跃迁的荧光比得到。因为5P3/2+5P3/2或5P1/2+5P3/2的能量和与5D态的能量差远小于5P1/2+5P1/2与5D态的能量差,因此5P3/2+5P3/2,5P1/2+5P3/2的过程将影响5P1/2+5P1/2的测量结果。由于精细结构能量转移的时间比5D态寿命小得多,故5P1/2+5P1/2,5P1/2+5P3/2和5P3/2+5P3/2产生的5D5P荧光是同时产生的。在不同的池温下测量了积分荧光信号的相对强度,5P态原子有效寿命由辐射陷获的理论得到,结合激发态原子密度得到了5P1/2+5P1/2,5P1/2+5P3/2和5P3/2+5P3/2碰撞能量合并截面分别为7.810-15,2.9×10-14和3.1×10-14cm2。结果表明5P1/2+5P3/2与5P3/2+5P3/2产生5D3/2态的截面基本是相等的。

关键词：激光光谱碰撞能量合并荧光截面 Rb

Reversal of hyperglycemia in diabetic rats by portal vein transplantation of islet-like cells generated from bone marrow mesenchymal stem cells

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World Journal of Gastroenterology 2007年第24期13卷 3342-3349页

作者： Xiao-hong wu Cui-ping Liu Kuan-Feng Xu Xiao-Dong Mao Jian Zhu Jing-Jing Jiang Dai Cui Mei Zhang Yu Xu Chao Liu Department of Endocrinology First Affiliated Hospital of Nanjing Medical University Nanjing 210029 Jiangsu Province China

AIM: To study the capacity of bone marrow mesenchymal stem cells (BM-MSCs) trans-differentiating into islet-like cells and to observe the effect of portal vein transplantation of islet-like cells in the treatment of streptozotocin-induced diabetic rat. METHODS: BM-MSCs were isolated from SD rats and induced to differentiate into islet-like cells under defined conditions. Differentiation was evaluated with electron microscopy, RT-PCR, immunofluorescence and flow cytometry. insulin release after glucose challenge was tested with ELiSA. Then allogeneic islet-like cells were transplanted into diabetic rats via portal vein. Blood glucose levels were monitored and islet hormones were detected in the liver and pancreas of the recipient by immunohistochemistry. RESULTS: BM-MSCs were spheroid adherent monolayers with high CD90, CD29 and very low CD45 expression. Typical islet-like cells clusters were formed after induction. Electron microscopy revealed that secretory granules were densely packed within the cytoplasm of the differentiated cells. The spheroid cells expressed islet related genes and hormones. The insulin-positive cells accounted for 19.8% and mean fluorescence intensity increased by 2.6 fold after induction. The cells secreted a small amount of insulin that was increased 1.5 fold after glucose challenge. After transplantation, islet-like cells could locate in the liver expressing islet hormones and lower the glucose levels of diabetic rats during d 6 to d ***: Rat BM-MSCs could be transdifferentiated into islet-like cells in vitro . Portal vein transplantation of islet-like cells could alleviate the hyperglycemia of diabetic rats.

关键词： Bone marrow mesenchymal stem cells Trans-differentiation Islet Insulin Transplantation

Retrospective analysis of pathological types and imaging features in pancreatic cancer: A comprehensive study

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 121-129页

作者： Yang-Gang Luo Mei wu hong-Guang Chen Pathology Department Xuanhan County People’s HospitalDazhou 636150Sichuan ProvinceChina

BACKGROUND Pancreatic cancer remains one of the most lethal malignancies worldwide,with a poor prognosis often attributed to late *** the correlation between pathological type and imaging features is crucial for early detection and appropriate treatment *** To retrospectively analyze the relationship between different pathological types of pancreatic cancer and their corresponding imaging *** We retrospectively analyzed the data of 500 patients diagnosed with pancreatic cancer between January 2010 and December 2020 at our *** types were determined by histopathological examination of the surgical spe-cimens or biopsy *** imaging features were assessed using computed tomography,magnetic resonance imaging,and endoscopic *** analyses were performed to identify significant associations between pathological types and specific imaging *** There were 320(64%)cases of pancreatic ductal adenocarcinoma,75(15%)of intraductal papillary mucinous neoplasms,50(10%)of neuroendocrine tumors,and 55(11%)of other rare *** imaging features were identified in each pathological *** ductal adenocarcinoma typically presents as a hypodense mass with poorly defined borders on computed tomography,whereas intraductal papillary mucinous neoplasms present as characteristic cystic lesions with mural *** tumors often appear as hypervascular lesions in contrast-enhanced *** analysis revealed significant correlations between specific imaging features and pathological types(P<0.001).CONCLUSION This study demonstrated a strong association between the pathological types of pancreatic cancer and imaging *** findings can enhance the accuracy of noninvasive diagnosis and guide personalized treatment approaches.

关键词： Pancreatic cancer Pathological types Imaging features Retrospective analysis Diagnostic accuracy

Characteristics of gut microbiota dysbiosis in patients with colorectal polyps

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 13-21页

作者： Xian-Rong wu Xiao-hong He Yong-Fang Xie School of Life Health Information Science and Engineering Chongqing Post and Communications UniversityChongqing 400065China

This editorial,inspired by a recent study published in the World Journal of Gastrointestinal Oncology,covers the research findings on microbiota changes in various *** recurrent colorectal polyps,the abundances of Klebsiella,Parvimonas,and Clostridium increase,while those of Bifidobacterium and Lactoba-cillus *** dysbiosis may promote the formation and recurrence of *** microbial changes have also been observed in colorectal cancer,inflammatory bowel disease,autism spectrum disorder,and metabolic syndrome,indicating the role of increased pathogens and decreased probiotics in these *** the gut microbiota,particularly by increasing probiotic levels,may help prevent polyp recurrence and promote gut *** microbial intervention strategy holds promise as an adjunctive treatment for patients with colorectal polyps.

关键词： Recurrent colorectal polyps Gut microbiota dysbiosis Klebsiella Probiotics Intestinal inflammation Microbial intervention strategy

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硅藻土基多孔陶瓷的制备及研究

硅酸盐通报 2009年第4期28卷 641-645页

作者：巫红平吴任平于岩黄绵丽福州大学材料学院福州350108

以硅藻土为主要原料制备高气孔率的多孔陶瓷基体,探讨不同造孔剂添加量及不同烧结温度对多孔陶瓷气孔率、吸水率、体积密度和抗折强度的影响,对比手工可塑成型与模具压制成型得到制品的微观结构和性能。用XRD、SEM测试分析手段表征不同... 详细信息

以硅藻土为主要原料制备高气孔率的多孔陶瓷基体,探讨不同造孔剂添加量及不同烧结温度对多孔陶瓷气孔率、吸水率、体积密度和抗折强度的影响,对比手工可塑成型与模具压制成型得到制品的微观结构和性能。用XRD、SEM测试分析手段表征不同条件下硅藻土多孔陶瓷的结构及性能变化。结果确定最佳配方为:生硅藻土50%,煅烧硅藻土45%,粘土5%;外加5%木屑(造孔剂),在1000℃煅烧温度下,可以得到气孔率为54.00%,体积密度为1.05g/cm3,吸水率为51.38%,抗折强度为11.29MPa的多孔陶瓷,比表面积达到11.65m2/g,孔容0.288m3/g,孔径为6.26nm。

关键词：硅藻土多孔陶瓷气孔率烧结温度成型方法