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Chinese Journal of Chemistry 2013年第11期31卷 1439-1448页

作者： Pan Zhang Chao li Yue Zhao Yaowen li Yingfeng tu Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application Department of Polymer Science and Engineering College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China

A series of acceptor-donor-acceptor alternative small molecules were synthesized containing electron-donating central building moieties of phenothiazine, 2,7-carbazole and thieno[3,4-b]thiophene and electron-accepting moie- ties of tetrazine on both sides. The various conformations of the central blocks, with the coplanarity in an order of phenothiazine〈2,7-carbazole〈thieno[3,4-b]thiophene, have an obvious influence on the optical, electrochemical property and the crystallinity of small molecule. In addition, the blend films between small molecule and （6,6）-phenyl-C6rbutyric acid methyl ester offered significantly various morphologies, changing from uniform sur- face to interpenetrated networks. As a result, the bulk heterojunction photovoltaic devices based on the three small molecules provided varied performance, and the highest coplanar molecule based device exhibited the best photo- voltaic performance.

关键词： acceptor-donor-acceptor small molecules central blocks coplanarity morphology

Effect of milling process on the core-shell structures and dielectric properties of fine-grained BaTiO_3-based X7R ceramic materials

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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 345-348页

作者： Tian Wang Xiao-hui Wang Hai Wen Long-tu li State Key Laboratory of New Ceramics and Fine Processing Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

Fine-grained BaTiO3-based X7R ceramic materials were prepared and the effects of milling process on the core-shell structures and dielectric properties were investigated using scanning electron microscope, transmission electron microscope, and energy dispersive spectroscopy （EDS）. As the milling time extends, the dielectric constant of the ceramics increases, whereas the temperature coefficient of capacitance at 125℃ drops quickly. The changes in dielectric properties are considered relevant to the microstructure evolution caused by the milling process. Defects on the surface of BaTiO3 particles increase because of the effects of milling process, which will make it easier for additives to diffuse into the interior grains. As the milling time increases, the shell region gets thicker and the core region gets smaller; however, EDS results show that the chemical inhomogeneity between grain core and grain shell becomes weaker.

关键词： fine-grain barium titanate core-shell structure milling process microstructure capacitor

Synthesis and Electrochemical Characterization of Azomethine Containing N-Ethylcarbazole Group

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Chemical Research in Chinese Universities 2005年第6期21卷 743-748页

作者： li Ya-peng SUN li-min SUN Ming-hao li Hong-tu ZHANG Hong-wen WANG Jing-yuan College of Chemistry The First Medical College Jilin University Changchun 130023 P. R. China

Conjugated aromatic azomethines containing a carbazole group were synthesized. Their structures have been confirmed by IR, MS and UV spectrometries. When iodine was used as the dope to the conjugated compounds, the electrical conductivities （EC） of the doped conjugated compounds were increased by several orders of magnitude. The thermal stability of these two compounds investigated by TGA shows a good result, which guarantees the correct result of EC when the compounds are heated. As can be seen from the CV characterization of the electrochemical properties of these two compounds, the azomethine diamine and p-aminophenyl-9-ethylcarbazolyl azomethine possess electrochemical activity, which arises from the heteroatom of molecules.

关键词： Azomethine Carbazole Conjugated compound Electrochemical activity Doped material

Automatic three-dimensional reconstruction based on four-view stereo vision using checkerboard pattern

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Journal of Central South University 2017年第5期24卷 1063-1072页

作者： XIONG Jie ZHONG Si-dong liU Yong tu li-fen School of Electronic Information Wuhan University School of Physics and Electronic Information Engineering Hubei Engineering University

An automatic three-dimensional(3D) reconstruction method based on four-view stereo vision using checkerboard pattern is presented. Mismatches easily exist in traditional binocular stereo matching due to the repeatable or similar features of binocular images. In order to reduce the probability of mismatching and improve the measure precision, a four-camera measurement system which can add extra matching constraints and offer multiple measurements is applied in this work. Moreover, a series of different checkerboard patterns are projected onto the object to obtain dense feature points and remove mismatched points. Finally, the 3D model is generated by performing Delaunay triangulation and texture mapping on the point cloud obtained by four-view matching. This method was tested on the 3D reconstruction of a terracotta soldier sculpture and the Buddhas in the Mogao Grottoes. Their point clouds without mismatched points were obtained and less processing time was consumed in most cases relative to binocular matching. These good reconstructed models show the effectiveness of the method.

关键词： three-dimensional reconstruction four-view stereo vision checkerboard pattern dense point

Preparation of Spherical Microfine Silicon Powder

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Journal of Wuhan University of Technology(Materials Science) 2008年第4期23卷 440-442页

作者： SHENG Yong ZOU Jun li Bing tu Mingjing College of Material Science and Engineering Sichuan University Chengdu 610065 China

Under certain conditions of proper temperature and pH value, sodium silicate was hydrolyzed in liquid ammonia chloride, and spherical microfine SiO2 powder in micrometer-size was prepared. In this experiment, the relationship between needed time and proper pH value, temperature, density of the solution, and its current capacity were found .The optimum conditions are pH 8.5, 70 ~C, and the concentration of sodium silicate is 0.6 mol/L for the density of the solution. The structure of spherical microfine silicon was characterized by SEM and XRD.

关键词： SiO2 powder spherical-structure

Gold-based nanomaterials for the treatment of brain cancer

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Cancer Biology & Medicine 2021年第2期18卷 372-387页

作者： li tu Zheng Luo Yun-Long Wu Shuaidong Huo Xing-Jie liang Fujian Provincial Key Laboratory of Innovative Drug Target Research School of Pharmaceutical SciencesXiamen UniversityXiamen 361102China CAS Center for Excellence in Nanoscience CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyNational Center for Nanoscience and TechnologyBeijing 100190China

Brain cancer,also known as intracranial cancer,is one of the most invasive and fatal cancers affecting people of all *** the great advances in medical technology,improvements in transporting drugs into brain tissue have been limited by the challenge of crossing the blood-brain barrier(BBB).Fortunately,recent endeavors using gold-based nanomaterials(GBNs)have indicated the potential of these materials to cross the ***,GBNs might be an attractive therapeutic strategy against brain ***,we aim to present a comprehensive summary of current understanding of the critical effects of the physicochemical properties and surface modifications of GBNs on BBB penetration for applications in brain cancer ***,the most recent GBNs and their impressive performance in precise bioimaging and efficient inhibition of brain tumors are also summarized,with an emphasis on the mechanism of their effective BBB ***,the challenges and future outlook in using GBNs for brain cancer treatment are *** hope that this review will spark researchers'interest in constructing more powerful nanoplatforms for brain disease treatment.

关键词： Gold-based nanomaterials BBB penetration brain cancer therapy

Blimp-1 protein and Hans classification on prognosis of diffuse large B-cell lymphoma and their interrelation

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Chinese Journal of Cancer 2010年第9期29卷 781-786页

作者： Yan Song Zhi Cao ling li Hong-tu Zhang Xun Zhang Department of Pathology Cancer Institute and Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing100021 P. R. China

Background and Objective:Diffuse large B-cell lymphoma (DLBCL), the most common type of non-Hodgkin's lymphoma (NHL), is heterogeneous on molecular and clinical levels, therefore, its prognosis is difficult to *** study aimed to evaluate the value of Blimp-1 protein and Hans classification in predicting the prognosis of DLBCL and their ***:The clinical records of 136 patients with DLBCL were *** patients were followed up for 5-80 months (median, 39 months).Immunohistochemical staining for CD10, MUM1, Bcl-6, and Blimp-1 were performed on paraffin-embedded tumor tissues from the 136 *** correlations of Blimp-1 protein and Hans classification in prognosis of DLBCL and their interrelation were ***:Blimp-1 was detected in 38 (30.0%) patients, and was associated with a significantly shorter overall survival (OS) (P=0.030).Using the Hans classification based upon the expression of CD10, Bcl-6, and MUM1, 54 patients had germinal center B-cell (GCB) phenotype and 82 had non-GCB *** 5-year OS rate was 75% in the GCB group and 52% in the non-GCB group (P=0.020).The positive rate of Blimp-1 was 22.2% in the GCB group and 31.7% in the non-GCB group (P=0.329).The Cox regression multivariate analysis showed that international prognosis index (IPI) and Hans classification had independent prognostic significance, whereas Blimp-1 was not an independent prognostic ***:The patients with GCB subtype of DLBCL had better prognosis than the non-GCB *** level of Blimp-1 expression in the patients with DLBCL implies a shorter survival, but it is not associated with Hans classification.

关键词： B细胞淋巴瘤分类价值弥漫性预后飞艇蛋白发电机断路器免疫组织化学染色

Soil-nitrogen net mineralization increased after nearly six years of continuous nitrogen additions in a subtropical bamboo ecosystem

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Journal of Forestry Research 2015年第4期26卷 949-956页

作者： Yin-long Xiao li-hua tu Gang Chen Yong Peng Hong-ling Hu Ting-xing Hu li liu College of Forestry Sichuan Agricultural University Personnel Department Sichuan Agricultural University

In order to understand the effects of increasing atmospheric nitrogen （N） deposition on the subtropical bamboo ecosystem, a nearly six-year field experiment was conducted in a Pleioblastus amarus plantation in the rainy region of SW China, near the western edge of Sichuan Basin. Four N treatment levels---control （no N added）, low- N （50 kg N ha-1 a-l）, medium-N （150 kg N ha-1 a-l）, and high-N （300 kg N ha-1 a-1）--were applied monthly in the P. amarus plantation starting in November 2007. In June 2012, we collected intact soil cores in the bamboo plantation and conducted a 30-day laboratory incubation experiment. The results showed that the soil N net miner- alization rate was 0.96 4- 0.10 mg N kg-1 day-1, under control treatment. N additions stimulated the soil N net mineralization, and the high-N treatment significantly increased the soil N net mineralization rate compared with the control. Moreover, the soil N net mineralization rate was significantly and positively correlated with the fine root biomass, the soil microbial biomass nitrogen content and the soil initial inorganic N content, respectively,whereas it was negatively correlated with the soil pH value. There were no significant relationships between the soil N net mineralization rate and the soil total nitrogen （TN） content and the soil total organic carbon content and the soil C/N ratio and the soil microbial biomass carbon con- tent, respectively. These results suggest that N additions would improve the mineral N availability in the topsoil of the P. amarus plantation through the effects of N additions on soil chemical and physical characteristics and fine-root biomass.

关键词： Nitrogen addition Soil nitrogen net mineralization Soil chemical and physical characteristics Fine root biomass Pleioblastus amarus plantation

Studies of new EST-SSRs derived from Gossypium barbadense

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Chinese Science Bulletin 2007年第18期52卷 2522-2531页

作者： ZHANG YanXin liN ZhongXu li Wu tu lili NIE YiChun ZHANG XianLong National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 China

Existing cotton EST-SSR markers are mostly derived from Gossypium arboreum and Gossypium hir-sutum, but EST-SSR markers from Gossypium barbadense are scarce. One hundred and nineteen EST-SSRs were developed based on 98 unique ESTs from a cDNA library constructed in our laboratory using developing fibers from G. barbadense cv. Pima3-79. Among the SSRs, trinucleotide AAG appeared at a high frequency of 11.76%. 36 accessions (consisting of 13 diploids of the A genome, 11 diploids of the D genome and 12 allotetraploids of the AD genome) were employed to test new EST-SSRs. 76 EST-SSRs were successfully amplified, and 313 polymorphic fragments were yielded, with an average of 4.11 fragments per primer pair. The PIC ranged from 0.17 to 0.95 with an average of 0.53. Based on Jaccard’s genetic similarity coefficient, these 36 accessions were clustered into three groups. 21 EST-SSRs exhibited polymorphisms in BC1 population ((Emian22 × Pima3-79) × Emian22), 24 polymor- phic loci were generated, while 22 of the 24 polymorphic loci were integrated with our interspecific BC1 backbone genetic linkage map, and anchored in 12 chromosomes. This study effectively proved that EST-SSRs from G. barbadense are valuable for genetic diversity analysis and genetic mapping.

关键词：棉花基因表达基因序列分析遗传多样性基因图谱

litterfall,litter Decomposition,and Nutrient Dynamics in Two Subtropical Bamboo Plantations of China

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Pedosphere 2014年第1期24卷 84-97页

作者： tu li-Hua HU Hong-ling HU Ting-Xing ZHANG Jian li Xian-Wei liU li XIAO Yin-Long CHEN Gang li Ren-Hong College of Forestry Sichuan Agricultural University Institute of Ecological Forestry College of ForestrySichuan Agricultural UniversityChengdu CampusWenjiang District Personnel Department Sichuan Agricultural University Sichuan Forestry Inventory and Plan Institute

Bamboos are one of the fast-growing and multiple use species in the world, and thus bamboo forests/plantations play an important role in C sequestration at regional and global levels. We studied aboveground litterfall, litter decomposition and nutrient dynamics for two years in two subtropical bamboo ecosystems in Southwest China so as to test the hypothesis that litter quality determine the rate and nutrient dynamics during decomposition of different litter fractions. Mean annual total aboveground litter production ranged from 494 to 434 g m-2 in two bamboo stands （P stand, dominated by Pleioblastus amarus and H stand, hybrid bamboo dominated by Bambusa pervariabilis x Dendrocalamopsis daii）. Bulk （-80%） of litter production was contributed by leaf litter in two stands followed by twigs and sheathes. Different litter fractions represented considerable variations in the rates of mass loss and nutrient release. Variation of the mass remaining after 2 years of decomposition was significantly explained by initial C/N ratio and initial P concentration. Initial concentrations of N, P, Ca, and Mg explained 57.9%, 95.0%, 99.8% and 98.1%, respectively, of the variations of these elements mass remaining after 2 years of decomposition. The patterns of nutrient dynamics and the final amount remaining were mainly determined by their initial litter substrate quality in tl^ese two subtropical bamboo plantations.

关键词： C/N ratio litter fraction litter substrate mass loss Pleioblastus amarus