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Decomposition Reaction of Zn-MPA(3-Mercaptopropionic Acid) Complex Under Microwave Irradiation

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Chemical Research in Chinese Universities 2008年第3期24卷 353-356页

作者： JIAN wen-ping LIU sheng LI Jun yang wen-sheng Key Laboratory of Surface and lnterface Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China Department of Mechanical and Electrical Engineering Jilin Vocational College of Industry and Technology Jilin 132013 P. R. China

The thermal decomposition of Zn-MPA complex was investigated under microwave irradiation. ZnO and ZnS nanocrystals could be obtained by decomposing Zn-MPA（3-mercaptopropionic acid） complex under different reaction conditions. It was found that both the pH value of the solution and the molar ratio of Zn2＋ and MPA can play an important role in the formation of ZnO and ZnS nanocrystals. MPA mainly acts as an S source or as a complexing agent. This study provides a new route for the controllable preparation of semiconductor nanocrystals.

关键词： Nanocrystal Microwave irradiation Photoluminescence Decomposition reaction

Effect of Frontier Orbital on Aggregation Behavior of Barbituric Acid Derivatives

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Chemical Research in Chinese Universities 2002年第4期18卷 441-444页

作者： LIU Chun-ming yang wen-sheng Department of Chemistry Changchun Teachers’ColleageChangchun 130023P.R.China College of Chemistry Jilin UniversityChangchun 130023P.R.China

Two amphiphilic barbituric acid derivatives with a D-π-A structure, 5-(4-dodecyloxybenzylidene)-(1H,3H)-2,4,6-pyrimidinetrione(PB_ 12) and 5-(4-N,N-didodecylaminobenzylidene)-(1H,3H)-2,4,6-pyrimidintrione(AB_ 12) were found to show different aggregation behavior in chloroform. PB_ 12, a derivative with weak electron donating and strong electron drawing substituents, tends to aggregate in a head-to-tail manner, whereas AB_ 12, a derivative with both strong electron donating and drawing substituents, tends to aggregate in a face-to-face manner at a higher concentration. The cyclic voltammograms of AB_ 12 and PB_ 12 show that their energy levels of LUMO approach each other, however, the energy level of HOMO of AB_ 12 is much higher than that of PB_ 12.

关键词： Barbituric acid derivative Aggregation HOMO LUMO

Formation of Na_(1+x)V_3O_8 Nanoribbon Thin Film from V_2O_5 Xerogel on Sodium Silicate Glass Substrate

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Chemical Research in Chinese Universities 2007年第4期23卷 381-383页

作者： GUO Yi XU Jin-jie LI Jun yang wen-sheng College of Chemistry Jilin University Changchun 130012 P. R. China

Na1＋xV3O8 nanoribbon thin film was successfully fabricated by annealing the V2O5 xerogel film on sodium sili-cate glass substrate at 450℃. It has been identified that the amount of sodium ions diffused into the V2O5 xerogel film increases with the high temperature of annealing treatment. The sodium glass substrate serves as a limited sodium source to induce the transformation from V2O5 to Na1＋xV3O8.

关键词： Vanadium pentoxide Sodium silicate glass Nanoribbon Cathode materials

Oligo-lysine Induced Formation of Silica Particles in Neutral Silicate Solution

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Chemical Research in Chinese Universities 2006年第3期22卷 368-370页

作者： ZHANG Xiao-dong SUN Ying-ying ZHUANG Jia-qi yang wen-sheng College of Chemistry Jilin University Changchun 130023 P.R. China

Oligo-（lysine） n （n = 1-4） containing different numbers of lysine residues was used to induce the condensation of silicic acid to form silica particles in neutral silicate solution. It was found that the condensation rate and the formation of silica particles are dependent on the number of lysine residues in an oligo-lysine. Oligo-lysine with more lysine residues can link more silicic acid together to form a matrix that promotes the effective aggregation of the condensed silica pieces to form large silica particles.

关键词： Biosilification Polylysine Silica

Mutual regulation between microRNA-373 and methyl-CpGbinding domain protein 2 in hilar cholangiocarcinoma

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World Journal of Gastroenterology 2012年第29期18卷 3849-3861页

作者： Yong-Jun Chen Jian Luo Guang-Yao yang Kang yang Song-Qi wen sheng-Quan Zou Department of Biliary-pancreatic Surgery Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 Hubei Province China

AIM:To investigate the reciprocal modulation between microRNA(miRNA) and DNA methylation via exploring the correlation between miR-373 and methyl-CpGbinding domain protein(MBD)***:MiR-373 expression was examined using the TaqMan miRNA *** of miR-373 was investigated using methylation-specific polymerase chain reaction,and recruitment of methyl binding proteins was studied using the chromatin immunoprecipitation *** analysis was conducted using the QuikChange Site-Directed Mutagenesis *** activity of miR-373 gene promoter constructs and targeting at MBD2-three prime untranslated region(3'UTR) by miR-373 were evaluated by a dual-luciferase reporter gene ***:In hilar cholangiocarcinoma,miR-373 decreased and was closely associated with poor cell differentiation,advanced clinical stage,and shorter *** promoter-associated CpG island of miR-373 gene was hypermethylated and inhibited expression of ***2 was up-regulated and enriched at the promoter-associated CpG island of ***-mediated suppression of miR-373 required MBD2 enrichment at the promoter-associated CpG island,and miR-373 negatively regulated MBD2 expression through targeting the 3'***:MiR-373 behaves as a direct transcriptional target and negative regulator of MBD2 activity through a feedback loop of CpG island methylation.

关键词： MicroRNA-373 Methyl-CpG binding domain proteins 2 Methylation Hilar cholangiocarcinoma Three prime untranslated region

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基于节点分类的区域货流分布预测方法

科学技术与工程 2024年第22期24卷 9645-9653页

作者：吴淼晶鑫杨圣文陈富泽钱琛浩张梦娟西南林业大学机械与交通学院昆明650224 云南省高校高原山区机动车环保与安全重点实验室昆明650224

为了更加精确地预测区域货流分布并准确描绘区域经济之间的联系与互动,提出了基于聚类算法与改进重力模型相结合的区域货流分布预测方法。首先,通过Pearson相关性检验对货运影响因素进行分析,针对不同区域之间的异质性和相似性,采用K-me... 详细信息

为了更加精确地预测区域货流分布并准确描绘区域经济之间的联系与互动,提出了基于聚类算法与改进重力模型相结合的区域货流分布预测方法。首先,通过Pearson相关性检验对货运影响因素进行分析,针对不同区域之间的异质性和相似性,采用K-means++算法进行节点聚类,对起讫点(origin-destination,OD)进行精细化研究;其次,引入货运影响因素、社会联系强度以及由距离成本和时间成本构建的阻抗函数作为参数,对传统重力模型进行改进,灵活地适应不同地区的交通特征,使得模型更具通用性和适应性;最后,以云南省为例,利用构建的改进重力模型进行货流分布预测,并与传统重力模型预测结果进行比较。结果表明:改进重力模型预测精度比传统重力模型提升了57.75%,稳定性提升了54.66%。该方法预测精度明显提升,为区域货流预测提供了更为可靠的方法。

关键词：区域货流分布节点分类 K-means++ 重力模型

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侵袭性炎性纤维性息肉1例并文献报道

诊断病理学杂志 2024年第8期31卷 780-783页

作者：窦振华叶承祖杨冰洪杨文圣中国人民解放军陆军第七十三集团军医院病理科福建厦门361003

目的探讨侵袭性炎性纤维性息肉(IFP)的临床病理特征、诊断、鉴别诊断、治疗及预后。方法回顾性分析1例侵袭性炎性纤维性息肉的临床病理特征,并结合相关文献进行讨论。结果患者男性,62岁,因小肠梗阻行部分小肠切除术,术后巨检于肠壁见一... 详细信息

目的探讨侵袭性炎性纤维性息肉(IFP)的临床病理特征、诊断、鉴别诊断、治疗及预后。方法回顾性分析1例侵袭性炎性纤维性息肉的临床病理特征,并结合相关文献进行讨论。结果患者男性,62岁,因小肠梗阻行部分小肠切除术,术后巨检于肠壁见一隆起型肿物,大小4.5 cm×3 cm×3 cm。镜下见肿瘤细胞呈胖梭形、星芒状,排列杂乱,疏密不均,间质显示突出的血管及嗜酸性粒细胞浸润,肿瘤主体位于黏膜下层,并浸润破坏肠壁全层。肿瘤细胞弥漫表达vimentin,局部表达CD34、Actin及SMA。KIT基因和PDGFRA基因均无突变。结论侵犯肠壁全层的炎性纤维性息肉是一种罕见的肿瘤。诊断时需结合组织学及免疫组化,必要时可辅助基因检测。其治疗和预后情况仍需大样本研究和长期随访。

关键词：炎性纤维性息肉临床病理特征诊断鉴别诊断

A型胸腺瘤合并伴有淋巴样间质的微结节型胸腺瘤临床病理观察

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诊断病理学杂志 2024年第2期31卷 149-151页

作者：沈艳玲刘雪青杨文圣陆军第七十三集团军医院厦门大学附属成功医院病理科福建厦门361000

世界卫生组织(WHO)把胸腺上皮性肿瘤分成5种主要的组织学亚型(A型、AB、B1、B2和B3)以及其他少见亚型的胸腺瘤和胸腺癌,包括具有淋巴样间质的微结节型胸腺瘤(micronodular thymoma with lymphoid stroma,MNT)。虽然在部分MNT中可见A型... 详细信息

世界卫生组织(WHO)把胸腺上皮性肿瘤分成5种主要的组织学亚型(A型、AB、B1、B2和B3)以及其他少见亚型的胸腺瘤和胸腺癌,包括具有淋巴样间质的微结节型胸腺瘤(micronodular thymoma with lymphoid stroma,MNT)。虽然在部分MNT中可见A型胸腺瘤成分。

关键词：胸腺瘤 A型胸腺瘤伴有淋巴样间质的微结节型胸腺瘤临床病理

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昌宁县打造“绿色食品牌”的举措探讨

云南农业科技 2024年第4期 133-136页

作者：王菊莲杨文生罗晓东吴艳赵炳华昌宁县农业农村局云南昌宁678100

立足昌宁县“绿色食品牌”发展现状,总结、探讨了近年来昌宁县“绿色食品牌”发展措施和制约瓶颈,从4个方面提出了昌宁县促进“绿色食品牌”发展的对策。

关键词：绿色食品牌现代农业对策建议昌宁县