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Trimer formation of 6-methyl-1,3,5-triazine-2,4-diamine in salt with organic and inorganic acids:analysis of supramolecular architecture

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Science China Chemistry 2014年第12期57卷 1731-1737,1-2页

作者： xiao zhen yu WANG Wen Qiang XUE Rui yu ZHAO Lei WANG Lei ZHANG YiHeng College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

Although the numbers of co-crystals,salts,polymorphs,hydrates,and solvates are growing steadily,trimers that contain both inorganic and organic acids are still very rare in the Cambridge Structural Database(CSD).When 3,5-dihydroxybenzoic acid was crystallized readily with 6-methyl-1,3,5-triazine-2,4-diamine in a 4:3 ratio of ethanol and water by adding a few drops of nitric acid upon slow evaporation in ambient conditions,6-methyl-1,3,5-triazine-2,4-diamine and 3,5-dihydroxybenzoic acid with the nitric acid form of 1:1:1 an inorganic-organic salt formulated as[(C4H8N5+)·(NO3-)·(C7H6O4)].The supramolecular architecture,which is quite elegant and simple,appeared as stacking of a 3D network in *** transfer from the HNO3to 6-methyl-1,3,5-triazine-2,4-diamine N acceptor(triazine N)occurred in the organic salt and led to the ionic heterosynthon in the *** among the–COOH,–OH,NO3–,and–NH–functional groups for the observed hydrogen bond synthon was examined in the *** adduct,recognition among the constituents is established through N–H···O,O–H···N,and O–H···O hydrogen *** agomelatine molecules are linked through the intermolecular hydrogen bonding interactions(O–H···O)to form a 1D *** addition,the nitric acid anions and base cations act as donors and acceptors of hydrogen bonds and interlink,almost to co-planarity,the hydrogen-bonded chains through interchain N–H···O,O–H···N,as well as O–H···O interactions into a 2D sheet *** N–H···O interactions were found to play an important role in the formation of the final 3D *** salt was characterized by elemental analysis,IR,thermogravimetric analysis,and singlecrystal X-ray diffraction,to better understand how intermolecular interactions influence its supramolecular assembly.

关键词： supramolecular hydrogen bonds crystal structure salt

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Preventive effect of regional radiotherapy with phosphorus-32 glass microspheres in hepatocellular carcinoma recurrence after hepatectomy

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World Journal of Gastroenterology 2008年第4期14卷 518-523页

作者： xiao-Ming Wang zhen-yu Yin Ren-Xiang yu You-yuan Peng Ping-Guo Liu Guo-Yang Wu Department of Hepatobillary Surgery of Zhongshan Hospital Digestive DiseaseInstitute of Xiamen University Xiamen 361004 Fujian ProvinceChina

AIM: To evaluate the preventive effects of phosph-orus-32 glass microspheres (P32-GMS) in the recurrence of massive hepatocellular carcinomas (HCCs) after tumor resection. METHODS: Twenty-nine patients with massive HCCs received local P32-GMS implantation after liver tumors were removed,while the other 38 patients with massive HCCs were not treated with P32-GMS after hepatectomies. The radioactivity of the blood,urine and liver were examined. The complications,HCC recurrence and overall survival rates in the patients were analyzed. RESULTS: P32-GMS implanted in the liver did not cause systemic absorption of P32. There were no significant differences of postoperative complications between the patients with and without P32-GMS treatment. The short-term (six months and 1 year) and long-term (2,3 and over 3 years) recurrence rates in patients who received P32-GMS radiotherapy were signifi cantly decreased,and the overall survival rates in this group were signifi cantly improved. CONCLUSION: P32-GMS implantation in the liver can significantly decrease the postoperative recurrence and improve the overall survival in HCCs patients after hepatectomy. This therapy may provide an innovative method in prevention of HCC recurrence after operation.

关键词： Hepatocellular carcinoma Recurrence Phosphorus-32 glass microspheres Hepatectomy

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Modeling of Strain-Induced Precipitation Kinetics and Evolution of Austenite Grains in Nb Microalloyed Steels

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Journal of Iron and Steel Research International 2008年第3期15卷 65-69页

作者： ZHOU xiao-guang LIU zhen-yu yuAN Xiang-qian WU Di WANG Guo-dong LIU Xiang-hua State Key Laboratory of Rolling Technology and Automation Northeastern University Shenyang 110004 Liaoning China

Considering the effect of strain and chemical composition onprecipitation behavior, new models for the start and end time of Nb（C,N） precipitation in austenite under the conditions of different temperatures and strains have been investigated for Nb microalloyed steel. The value of n in the precipitation kinetic equation has been determined by using the available experimental data in literature, which indicated that n is a constant and independent of temperature. The values of the start and end time of the predicted precipitation are compared with the experimental values. Calculated results are in good agreement with the experimental results. Also, the evolution of austenite grains before ferrite transformation is simulated by taking the effect of precipitation into consideration. The measured austenite grain size is in good agreement with predicted one prior to ferrite transformation.

关键词： strain-induced precipitation start time precipitation static recrystallization grain size

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Identification of differential gene expression for microarray data using recursive random forest

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Chinese Medical Journal 2008年第24期121卷 2492-2496页

作者： WU xiao-yan WU zhen-yu LI Kang Department of Biostatistics College of Public Health Harbin Medical University Harbin Heilongjiang 150081 China

Background The major difficulty in the research of DNA microarray data is the large number of genes compared with the relatively small number of samples as well as the complex data structure. Random forest has received much attention recently; its primary characteristic is that it can form a classification model from the data with high dimensionality. However, optimal results can not be obtained for gene selection since it is still affected by undifferentiated genes. We proposed recursive random forest analysis and applied it to gene selection. Methods Recursive random forest, which is an improvement of random forest, obtains optimal differentiated genes after step by step dropping of genes which, according to a certain algorithm, have no effects on classification. The method has the advantage of random forest and provides a gene importance scale as well. The value of the area under the curve （AUC） of the receiver operating characteristic （ROC） curve, which synthesizes the information of sensitivity and specificity, is adopted as the key standard for evaluating the performance of this method. The focus of the paper is to validate the effectiveness of gene selection using recursive random forest through the analysis of five microarray datasets; colon, prostate, leukemia, breast and skin data. Results Five microarray datasets were analyzed and better classification results have been attained using only a few genes after gene selection. The biological information of the selected genes from breast and skin data was confirmed according to the National Center for Biotechnology Information （NCBI）. The results prove that the genes associated with diseases can be effectively retained by recursive random forest. Conclusions Recursive random forest can be effectively applied to microarray data analysis and gene selection. The retained genes in the optimal model provide important information for clinical diagnoses and research of the biological mechanism of diseases.

关键词： microarray gene selection recursive random forest

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HBeAg gene expression with baculovirus vector in silk worm cells

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World Journal of Gastroenterology 1999年第2期5卷 79-83页

作者： DENG xiao Zhao, DIAO zhen yu, HE Liang, QIAO Ren Liang and ZHANG Lin yuan

ＩＮＴＲＯＤＵＣＴＩＯＮＭｉｙａｎｏｈａｒａｅｔａｌ［１］ｆｉｒｓｔｏｂｔａｉｎｅｄｐｒｏｄｕｃｔｓｗｉｔｈｔｈｅｅｘｐｒｅｓｉｏｎｏｆＨＢｅＡｇａｃｔｉｖｉｔｙｂｙｃｏｎｓｔｒｕｃｔｉｎｇａｙｅａｓｔｅｘｐｒｅｓｉ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＭｉｙａｎｏｈａｒａｅｔａｌ［１］ｆｉｒｓｔｏｂｔａｉｎｅｄｐｒｏｄｕｃｔｓｗｉｔｈｔｈｅｅｘｐｒｅｓｉｏｎｏｆＨＢｅＡｇａｃｔｉｖｉｔｙｂｙｃｏｎｓｔｒｕｃｔｉｎｇａｙｅａｓｔｅｘｐｒｅｓｉｏｎｓｙｓｔｅｍ；ｌａｔｅｒｒｅｓ...

关键词： hepatitis B virus HBeAg BmNPV vector gene expression DNA, viral

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基于熵值法我国银行体系脆弱性的评价

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华东经济管理 2008年第11期22卷 78-84页

作者：肖振宇南京理工大学经济管理学院江苏南京210094

文章运用一种较为直观的客观赋权评价方法——熵值法,对我国银行体系1980—2006年间的数据进行实证分析,对样本期间各年份的脆弱性进行排序,消除了其他主观评价法带来的偏差,从而为我国银行体系脆弱性的监管决策提供一定的有益参考。

关键词：银行脆弱性评价熵值法

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空调风机盘管加新风系统调节特性研究

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流体机械 2005年第2期33卷 24-27页

作者：萧震宇山东建筑工程学院山东济南250014

从工艺和控制两方面分析了空调系统的特性对空调节能、调节品质、可靠运行的重要影响。

关键词：空调系统数学模型传递函数

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Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑yuan yu Jing Wu Guang Yin Fan‑zhen Jiao Zhong‑zhen yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

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微量Ca、Y元素对AZ91镁合金动态再结晶及力学性能的影响

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矿冶工程 2019年第1期39卷 114-117页

作者：尹勇谭真肖振宇中南大学材料科学与工程学院湖南长沙410083

为同步提升AZ91镁合金强度及延性,研究了微量Ca、Y元素对AZ91镁合金热变形过程中动态再结晶及力学性能的影响。结果表明:Ca、Y元素的引入减少了Al元素在AZ91镁合金中的偏聚,减少了Mg_(17)Al_(12)相的动态析出,从而抑制了低温热变形过程... 详细信息

为同步提升AZ91镁合金强度及延性,研究了微量Ca、Y元素对AZ91镁合金热变形过程中动态再结晶及力学性能的影响。结果表明:Ca、Y元素的引入减少了Al元素在AZ91镁合金中的偏聚,减少了Mg_(17)Al_(12)相的动态析出,从而抑制了低温热变形过程中的动态再结晶,同时细小弥散分布的Al_2Y相在高温时促进了动态再结晶的发生。Ca、Y元素复合添加,引入大量弥散分布的Al_2Y,使完全再结晶后的组织更加细小,提升了力学性能。AZ91+Ca+Y镁合金673 K热压后室温压缩延伸率和强度分别达到了16.5%和392.55 MPa,比AZ91镁合金分别提升了16.2%和8.56%。

关键词： AZ91镁合金热变形动态再结晶力学性能微量元素

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Efficacy and safety of Tripterygium wilfordii glycosides tablets combined with Western medicine for patients with rheumatic immune diseases

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World Journal of Clinical Cases 2025年第6期13卷 14-23页

作者： Hang Shu xiao-yu Chen Jie Zhao Pin Li zhen Sun Department of Traditional Chinese Medicine Hangzhou Special Service Recuperation Center of Chinese People's Liberation Army Air ForceNanjing 210000Jiangsu ProvinceChina Department of Convalescence Hangzhou Special Service Recuperation Center of Chinese People's Liberation Army Air ForceNanjing 210000Jiangsu ProvinceChina

BACKGROUND Rheumatic immune diseases are a group of chronic inflammatory diseases charac-terized by joint and systemic multi-organ involvement,including rheumatoid arthritis,systemic lupus erythematosus,and Sjogren’s syndrome,among *** pathogenesis of these diseases is related to the abnormal activation and regulatory imbalance of the immune *** prevalence and morbidity of rheumatic immune diseases are high,imposing a significant burden on patients'quality of life and socio-economic ***,the treatment of rheumatic immune diseases mainly relies on Western medicine,such as non-steroidal anti-inflammatory drugs,glucocorticoids,disease-modifying antirheumatic drugs,and ***,the therapeutic effects of Western medicine are not ideal,some patients poorly respond or are resistant to Western medicine,and long-term use often causes various adverse *** To systematically evaluate the efficacy and safety of Tripterygium wilfordii gly-cosides tablets combined with Western medicine in the treatment of patients with rheumatic immune *** This study conducted a meta-analysis to systematically evaluate the efficacy and safety of Tripterygium wilfordii glycosides tablets combined with Western medicine for patients with rheumatic immune *** and English databases were searched for randomized controlled trials(RCTs)on the treatment of rheumatic immune diseases with Tripterygium wilfordii glycosides tablets combined with Western *** quality of the included studies was assessed using the Cochrane risk of bias assessment ***-analysis was performed using RevMan 5.4 *** The meta-analysis included 11 RCTs involving 1026 patients with rheumatic immune *** combined treatment significantly reduced the risk of disease recurrence(relative risk=1.07,95%confidence interval:1.01-1.15,P<0.05)and showed no significant heterogeneity(I2=0%,P=0.53),indicating that Tripterygium wilfordii glycosides

关键词： Rheumatic immune diseases Tripterygium wilfordii polyglycosides tablets Western medicine treatment Systematic review Meta-analysis

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