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Mechanical properties of Ni_(0.83)Co_(0.15)Cu_(0.02)Fe_(1.9)O_(4-δ)+PbZr_(0.52)Ti_(0.48)O_(3)particulate composites by composite oscillator technique and the correlation with the results of magnetoelectric properties

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Journal of Advanced Ceramics 2012年第4期1卷 317-326页

作者： M.Venkata RAMANA M.Penchal REDDY N.Ramamanohar REDDY B.S.MURTY K.V.SIVA KUMAR shenhua SONG Shenzhen Key Laboratory of Advanced Materials Department of Materials Science and EngineeringShenzhen Graduate SchoolHarbin Institute of TechnologyShenzhen 518055China Department of Physics Changwon National UniversityChangwonRepublic of Korea Ceramic Composite Materials Laboratory Department of PhysicsSri Krishnadevaraya UniversityAnantapur 515003India Nanotechnology Laboratory Department of Metallurgical and Materials EngineeringIndian Institute of TechnologyChennai 600036India

The xNi_(0.83)Co_(0.15)Cu_(0.02)Fe_(1.9)O_(4-δ)+PbZr_(0.52)Ti_(0.48)O_(3)(PZT)particulate magneto ferroelectric composites with x=0,0.1,0.2,0.3,0.4,0.5 and 0.6 mole fraction were prepared by conventional ceramic double sintering *** presence of two phases(perovskite structure of ferroelectric phase and spinal structure of ferromagnetic phase)was confirmed by X-ray *** magnetoelectric(ME)property of the particulate composites was determined at room temperature as a function of intensity of magnetic *** temperature variation of the longitudinal modulus(L)and the internal friction(q−1)of these particulate composites at 104.3 kHz was studied in the wide temperature range 30-420℃.The temperature variation of the longitudinal modulus in each composition of these particulate composites showed two abrupt *** minimum coincided with the ferroelectric-paraelectric Curie transition temperature(θE)and the other with the ferromagnetic-paramagnetic Curie transition temperature(θM).The internal friction measurement also showed two sharp peaks in each composition corresponding to those temperatures where the minima were noticed in the temperature variation of the longitudinal modulus behaviour.

关键词： X-ray diffraction magnetoelectric effect piezoelectric coefficient internal friction Curie transition temperature

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Forest characteristics and population structure of Glyptostrobus pensilis, a globally endangered relict species of southeastern China

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Plant Diversity 2019年第4期41卷 237-249页

作者： Cindy q. Tang Yongchuan Yang Arata Momohara Huan-Chong Wang Hong Truong Luu Shuaifeng Li Kun Song shenhua q.an Ben LePage Yi-Fei Dong Peng-Bin Han Masahiko Ohsawa Buu Thach Le Huu Dang Tran Minh Tri Dang Ming-Chun Peng Chong-Yun Wang Institute of Ecology and Geobotany School of Ecology and Environmental ScienceYunnan UniversityDongwaihuan South RoadUniversity TownChenggong New DistrictKunmingYunnan 650504China The Nature Conservancy Society of Japan Mitoyo Bldg.2F1-16-10 ShinkawaChuo-kuTokyo 104-0033Japan Key Laboratory of Three Gorges Reservoir Region's Eco-Environment Ministry of EducationChongqing UniversityChongqing 400045China Graduate School of Horticulture Chiba University648 MatsudoChiba 271-8510Japan Institute of Botany Yunnan UniversityKunmingYunnan 650091China Southern Institute of Ecology Vietnam Academy o f Science and TechnologyHo Chi Minh CityViet Nam Research Institute of Resource Insects Chinese Academy of ForestryKunmingYunnan 650224China School o f Ecological and Environmental Sciences East China Normal UniversityShanghai 200241China Pacific Gas and Electric Company 3401 Crow Canyon RoadSan RamonCA 94583USA The Academy of Natural Science 1900 Benjamin Franklin ParkwayPhiladelphiaPA 19W3USA

The Chinese water pine Glyptostrobus pensilis is the sole surviving species of the genus Glyptostrobus. It is endemic to southern China, central Vietnam, and eastern Laos, and today it is nearly extinct in the wild. Forest community characteristics and population structure of G. pensilis in China have remained un-known up to now. We investigated six swamp forest stands and analyzed their forest community characteristics (i.e. vertical stratification, species composition, and diversity) and population structure, including the frequency distribution of DBH (diameter at breast height) and age-classes as found in Fujian Province, southeastern China. The vertical stratifications of all the forest stands were rather simple. The remaining wild specimens ranged from roughly 15 to some 357 years for an average of ca. 85 years, with only a few individuals less than 20 years old. Compared with the stands and populations of G. pensilis in Vietnam, the taxonomic compositions of the stands in the two regions were different, except for the dominant species-G. pensilis. The Shannon-Wiener index showed the overstory of each stand had much lower diversity (0.26 on average) in Fujian Province than that (1.97 on average) in Vietnam, whereas the diversity indices were about the same (around 2.41) for the understories in the two regions. Furthermore, we discovered 18 G. pensilis seedlings at the study sites in Fujian Province. This discovery demonstrates that G. pensilis regeneration is extremely poor and its populations are declining, although these populations are rela-tively healthier than those in Vietnam.

关键词： Age-class Fujian Province Glyptostrobus Regeneration Relict plant Vietnam

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脂肪来源间充质干细胞调控变应性鼻炎小鼠T细胞免疫状态的研究

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中华耳鼻咽喉头颈外科杂志 2016年第1期51卷 50-56页

作者：李冠雪刘艳慧申聪香文忠张沈华杨柯柯南方医科大学珠江医院儿科小儿耳鼻咽喉组广州510282 新疆医科大学附属二院耳鼻咽喉科乌鲁木齐830285

目的探讨脂肪来源间充质干细胞（adipose—derivedstemceils，ADSC）对变应性鼻炎（allergicrhinitis，AR）小鼠辅助性T细胞（Th）、调节性T细胞（Treg）的调节作用及其机制。方法取Balb／c小鼠60只，采用随机数字表法随机分为6组（分... 详细信息

目的探讨脂肪来源间充质干细胞（adipose—derivedstemceils，ADSC）对变应性鼻炎（allergicrhinitis，AR）小鼠辅助性T细胞（Th）、调节性T细胞（Treg）的调节作用及其机制。方法取Balb／c小鼠60只，采用随机数字表法随机分为6组（分组表示为：致敏／激发／处理），分别为实验组1（OVA／OVA／高剂量ADSC）、实验组2（OVA／OVA／低剂量ADSC）、实验组3（0VA／OVA／磷酸盐缓冲液PBS）、实验组4（OVA／OVA／0）、对照组1（PBS／PBS／0）和对照组2（O／O／0）。常规分离提取小鼠ADSC，卵清蛋白（ovalbumin，OVA）联合氢氧化铝构建AR小鼠模型，尾静脉注射CM-Dil标记的ADSC（高剂量组：3×10^6；低剂量组：1×10^6）连续3d，48h后处死，酶联免疫吸附试验（enzymelinkedimmunosorbentassay，ELISA）检测血清中自细胞介素（interleukin，IL）4、IL-6、IL-10和叮干扰素（Y interferon，IFN-y）的水平，反转录聚合酶链反应（reversetranscriptasepolymerasechainreaction，RT—PCR）检测脾脏中上述各细胞因子mRNA的表达，荧光显微镜下观察ADSC在AR模型鼠鼻黏膜中的迁移分布，鼻黏膜HE染色观察嗜酸粒细胞浸润情况。以SPSS13．0软件进行统计学处理。结果成功分离培养并鉴定小鼠ADSC。AR模型小鼠症状学评分与对照组比较差异有统计学意义（P〈0．01）。实验组1与实验组4相比，血清IL4、IL-6水平下调[组1：（17．95±7．78）、（27．51±5．93）pg／ml；组4：（56．82±9．12）、（70．034-7．22）pg／m1]，IFN-1、IL-10水平上调[组1：（367．74±、13．79）、（417．10±72．40）p∥ml；组4：（199．464-11．25）、（122．50±15．57）pgZml]，差异均有统计学意义（P值均〈0．01）。实验组1与实验组2相比，血清IL-4、IL．6水平下调[组1：（17．95±7．78）、（27．51±5．93）pg／ml；组2：（41．57±12．27）、（56．21±9．23）pg／m1]，IFN-1、IL-10水平上调[组1：（367．74±13．79）、（417．10±72．40）pg／ml；组2：（281．77±30．41）、（203．454-87．10）pg／ml]，差异均有统计学意义（P值均〈0．01）。上述4种细胞因子mRNA水平与蛋白质水平呈现相同的变化特点。荧光显微镜下CM-Dil标记的ADSC可向鼻黏膜迁移分布，实验组1较实验组2有更明显的红色荧光。实验组1和实验组2较实验组4鼻黏膜中嗜酸粒细胞浸润明显减少。结论经静脉注入的ADSC可向AR模型小鼠鼻黏膜迁移，并发挥非特异性免疫调节效应。其机制可能是通过影响多种细胞因子的分泌进而调节Th1／Th2细胞免疫失衡和Treg细胞的功能而发挥作用，且在一定程度上与剂量相关。

关键词：鼻炎,变应性脂肪来源间充质干细胞 Th1/Th2细胞免疫平衡调节性T细胞

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Screening of the Metastasis-Associated Genes by Gene Chip in High Metastatic Human Ovarian Cancer Cell Lines

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Journal of Genetics and Genomics 2007年第7期34卷 581-590页

作者：许沈华牟瀚舟顾琳慧苏丹朱赤红刘祥麟浙江省肿瘤研究所杭州310022

Affymetrix U133A oligonucleotide microarrays were used to study the differences of gene expressions between high （H） metastatic ovarian cancer cell line, HO-8910PM, and normal ovarian tissues （C）. Bioinformatics was used to identify their chromosomal localizations. A total of 1,237 genes were found to have a difference in expression levels more than eight times. Among them 597 were upregulated [Signal Log Ratio （SLR） ≥3], and 640 genes were downregulated （SLR≤-3）. Except one gene, whose location was unknown, all these genes were randomly distributed on all the chromosomes. However, chromosome 1 contained the most differentially expressed genes （115 genes, 9.3%）, followed by chromosome 2 （94 genes, 7.6%）, chromosome 12 （88 genes, 7.1%）, chromosome 11 （76 genes, 6.1%）, chromosomes X （71 genes, 5.7%）, and chromosomes l7 （69 genes, 5.6%）. These genes were localized on short-arm of chromosome （q）, which had 805 （65.1%） genes, and the short arms of No.13, 14, 15, 21, and 22 chromosomes were the only parts of the chromosomes where the differentially expressed genes were localized. Functional classification showed that most of the genes （306 genes, 24.7%） belonged to the enzymes and their regulator groups. The subsequent group was the nucleic acid binding genes （144 genes, 11.6%）. The rest of the top two groups were signal transduction genes （137 genes, 11.1%） and proteins binding genes （116 genes, 9.4%）. These comprised 56.8% of all the differentially expressed genes. There were also 207 genes whose functions were unknown （16.7 %）. Therefore it was concluded that differentially expressed genes in high metastatic ovarian cancer cell were supposed to be randomly distributed across the genome, but the majority were found on chromosomes 1, 2, 12, 11, 17, and X. Abnormality in four groups of genes, including in enzyme and its regulator, nucleic acid binding, signal transduction and protein binding associated genes, might play important roles in ovarian cancer metastasis. Those

关键词： ovarian cancer cell line metastatic associated gene chromosomal localization molecular function

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中国铁矿石留在钢中的残留痕量元素

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钢铁 1998年第10期33卷 54-58页

作者：余宗森李士琦武骏袁泽喜宋申华李定秀徐廷栋谢荣厚北京科技大学武汉冶金科技大学钢铁研究总院

基于８个钢厂、３个钢种（Ｑ２３５钢、２０钢、轨钢）的５２０炉钢的化学成分全分析数据，研究了各钢厂由铁矿石带入钢中残留痕量元素的种类和含量水平。研究表明，使用当地铁矿石资源，矿石中的有些痕量元素会带入钢中，赋予钢材具有... 详细信息

基于８个钢厂、３个钢种（Ｑ２３５钢、２０钢、轨钢）的５２０炉钢的化学成分全分析数据，研究了各钢厂由铁矿石带入钢中残留痕量元素的种类和含量水平。研究表明，使用当地铁矿石资源，矿石中的有些痕量元素会带入钢中，赋予钢材具有地方资源特色。

关键词：矿石残留痕量元素化学成分钢

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