Synthesis of Selenium, Nickel and Tin Oxide Nanomaterials by Gas-phase Glow Discharge and Liquid-phase Arc Discharge

纳米材料是指在三维空间至少有一维处于纳米量级（1~100nm），或由它们作为基本单元构成的材料。由于其具有显著的量子尺寸效应、表面效应、小尺寸效应、宏观量子隧道效应等基本性质，纳米材料表现出奇异的光学、电学、磁学、力学、热学及化学特性，在生产及高科技领域有着广阔的应用前景。纳米材料的制备技术在当前纳米材料科学研究中占据极为重要的地位。本论文即从纳米材料的制备入手，并就其中的一些基本问题做了初步的探讨。研究结果可以概括为以下几方面： 利用辉光等离子体化学气相沉积法与溶液法相结合的手段制备了Se一维纳米棒。利用化学反应生成H2Se气体，通过新生成的的H2Se气体的辉光放电法制备了Se微球，这种微...The structures of nanomaterials are defined as having at least one dimension of 1-100 nm. Nanomaterials have many special mechanical, optical, electrical, magnetic, thermotic and chemical properties which differ from the corresponding bulk material due to their size effect, surface effect and quantum effect, thereby making them attractive for many new applications in many industry as well as techn...学位：理学硕士院系专业：化学化工学院化学系_无机化学学号：20002500

Characteristic and Application of Convolutional Codes

用卷积码的活性距离来分析卷积码的性能是随着分析Turbo码的性能而开始的,卷积码的活性距离是自由距离的扩展,它主要是由一个参数来决定的,即活性距离的斜率α。在对卷积码的活性距离进行简要介绍后,主要针对应用α对编织卷积码进行优化作出了探讨,指出了卷积码的活性距离α是分析用卷积码作为成员码的组合编码性能的重要参数。这对优化用卷积码作为成员码的组合编码,降低其编码复杂性有重要作用,也对推动该类组合码的应用有较高的价值。最后给出了仿真结果。The active distance of the convolutional codes is used to analyse the performance of the convolutional codes with the turbo codes was discovered.The active distence of convolutional codes is the extension of the free distance,and it is determined by the parameter α,viz.the slope of the active distance.The active distance of the convolutional codes are presented in this paper.This paper discusses how to optimize woven convolutional codes.It also points that the parameter α is important to analyse and optimize the performance of combinational codes with covolutional codes as the component codes,which also sinplize the encoding complication. This promotes the application of combined codes.Finally the simulation results are shown.国家自然科学基金资助项目(60272005);; 重庆邮电学院青年教师基金资助项目(2005-29

Research and development on life ball system for mine disaster rescue

设计了一个矿难救险设施。介绍了生命球的系统组成、结构、受力分析及仿真和生命球与地面连通的整体系统。通过相关的仿真模拟,证明了该设计结构的合理性和可行性。福建省自然科学基金资助项目(Z0511011

Effects of benzo[a]pyrene and DDT subacute co-exposure on ALT, AST and γ-GT in mice

目的:探讨不同剂量的苯并[A]芘(b[A]P)和滴滴涕(ddT)联合暴露对小鼠血清中谷丙转氨酶(AlT)、谷草转氨酶(AST)和γ-谷胺酰转移酶(γ-gT)的影响及作用形式。方法:成年雄性昆明种小鼠50只,随机分为10组即空白对照组(正常饲养)、溶剂对照组(食用油和二甲基亚砜处理)、低和高浓度b[A]P染毒组[1.0和10 Mg/(kg·d)]、低和高浓度ddT染毒组[0.6和6 Mg/(kg·d)]、低浓度ddT+低浓度b[A]P染毒组、低浓度ddT+高浓度b[A]P染毒组、高浓度ddT+低浓度b[A]P染毒组、高浓度ddT+高浓度b[A]P染毒组。染毒组各受试物经腹腔注射染毒,每日注射1次,连续31 d。末次染毒24 H后通过眼球摘除取血,自动生化仪检测血清中AlT、AST、γ-gT的活性;并制作肝脏HE切片,观察肝细胞形态。采用两因素三水平析因设计的方差分析对数据进行统计分析。结果:与对照组比较,b[A]P和ddT单独染毒时,均能诱导AlT和AST活性升高(f=41.308,P=0.000;f=20.083,P=0.000),随各自染毒剂量的增加,AlT和AST活性升高,但二者联合暴露对AlT和AST活性均不存在交互作用(分别为P=0.258,P=0.264)。b[A]P和ddT单独染毒对γ-gT活性均未产生明显影响,联合暴露也不存在交互作用(P=0.816)。HE染色观察到肝细胞膜界限模糊,发生水样变性,肝细胞中出现小空泡,呈蜂窝状,随染毒剂量增加,肝细胞质水样变性加剧,部分肝细胞质溶解,并且细胞核肿大,形状不规则。结论:在本实验条件下,b[A]P和ddT单独染毒均能诱导小鼠血清AlT和AST活性升高,不同剂量的b[A]P和ddT联合暴露对小鼠血清AlT、AST活性的作用形式主要表现为单独作用,而非交互作用。b[A]P和ddT的单独和联合暴露均未观察到对γ-gT的活性产生明显影响。OBJECTIVE: To explore the effects of benzo[a] pyrene and DDT exposure alone or in combination on ALT,AST and γ-GT in mice.METHODS:Fifty healthy male Kunming mice were divided into 10 groups at random:blank control group(normal feed);solvent control group(equal volume of oil);1,10 mg/(kg·d) B[a]P groups;0.6,6 mg/(kg·d) DDT groups;1 mg/(kg·d) B[a]P+0.6 mg/(kg·d) DDT group;1 mg/(kg·d) B[a]P+6 mg/(kg·d) DDT group;10 mg/(kg·d) B[a]P+0.6 mg/(kg·d) DDT group and 10 mg/(kg·d) B[a]P+6 mg/(kg·d) DDT group.Exposure groups were treated with oil contained B[a]P and DDT once a day.After 31 days of intraperitoneal injection,eyeballs were extracted and ALT,AST and γ-GT were examined in blood.HE slices were made to confirm the liver damage.Using two factors and three levels factorial ANOVA design for data analysis.RESULTS:The levels of ALT and AST in all B[a]P or DDT alone exposure groups were significantly higher than that of the control groups(F=41.308,P=0.000;F=20.083,P=0.000),showing dose-effect relationships in both.But no interaction was observed in co-exposure groups(P=0.258,P=0.264).No significant changes in γ-GT were observed in all B[a]P or DDT alone exposure groups.Neither was there any interactive effect in co-exposure groups(P=0.816).This was in accordance with the observation in HE slice:hydropic degeneration,endolysis and nuclear enlargement in liver cell.CONCLUSION:Under this experimental condition,increasing levels of ALT and AST could be detected in B[a]P or DDT separate exposure groups.But neither could affect γ-GT level.No interactive effects of ALT,AST and γ-GT could be induced in co-exposure groups.福建省自然科学基金项目(2013J01354); 厦门市科技计划项目(3502Z20123003); 中央高校基本科研业务费专项资金(2011121006

Critical tidal level for Kandelia candel forestation in strong tidal range area

以国内最大潮差值的乐清湾西门岛海域为研究地点,选定黄零为1.96、1.66、1.35和1.03M4个高程断面,对各高程上1年生和3年生秋茄(kAndElIA CAndEl)幼苗的成活率、生长指标以及污损生物(藤壶)等因子进行了统计分析.结果表明:不同高程内,1年生和3年生秋茄幼苗的生长存在显著性差异;秋茄幼林植株上附生有白脊藤壶(bAlAnuS AlbICOSTATuS)和纹藤壶(bAlAnuS AMPHITrITE AMPHITrITE)2种藤壶,其中优势种白脊藤壶在黄零1.35M的高程对秋茄的污损最为严重.西门岛秋茄的宜林线为黄零1.66M,即不低于当地平均海平面以上1.29M、每个潮水周期平均淹水时间小于3.65H的潮滩.藤壶、强潮和极端天气是该地区秋茄宜林线明显高于当地平均海平面的主要原因.Taking Ximen island of Yueqing bay,the biggest tidal range area among the coasts of China,as study site,an investigation was made on the survival rate,growth characteristics,and attached barnacles of 1-and 3-year old Kandelia candel seedlings at the elevations 1.96,1.66,1.35,and 1.03 m above the zero tidal level of Yellow Sea.Significant differences were observed in the survival rate and growth situation of the seedlings among the elevations.There were two barnacle species,Balanus albicostatus and Balanus amphitrite amphitrite,and B.albicostatus was the major species which attached K.candel most seriously at elevation 1.35 m.The critical tidal level for K.candel in the site was 1.66 m above the zero tidal level,i.e.,at least 1.29 m higher than the local mean sea level,and the flooding time per tide cycle being less than 3.65 h.Barnacle,strong tide,and extreme weather event were the main reasons for the higher critical tidal level.海洋公益性行业科研专项(200805072);浙江省科技计划项目(2008F1009);温州市科技计划项目(S20060037);浙江省科技厅创新团队建设与人才培养项目(2009F20009)资

高硫化氢合成气制甲硫醇新型钼基催化剂研究

研究了一系列负载型钼基催化剂催化含高硫化氢合成气制甲硫醇的性能 ,用XPS和ESR对其进行表征 .活性测试显示 ,钾促进的钼基催化剂催化的反应产物中甲硫醇成为主导产物 .几种钼基催化剂合成甲硫醇的活性大小顺序 :K2 MoO4/CoO/SiO2 >K2 MoO4/SiO2 >MoO3 /K2 CO3 /SiO2 >K2 MoS4/SiO2 >MoS2 /K2 CO3 /SiO2 .ESR表征显示 ,反应后的催化剂可以检测到“oxo Mo(V)”和“thio Mo(V)”物种 .XPS表征显示反应后催化剂中的Mo包含着Mo4+ ,Mo5+ 和Mo6+ ,S包含着S2 -,(S—S) 2 -和S6+ 三种价态 .添加CoO后 ,“oxo Mo(V)”含量减少 ,而“thio Mo(V)”含量增加 ,(S—S) 2 -物种的生成得到抑制 ,S2 -物种的量增多 .(Mo4+ +Mo5+ ) /Mo6+ 峰强度比为 0 75以及S2 -/(S—S) 2 -接近 1有利于甲硫醇的生成 .本文提出甲硫醇的合成与“Mo S K”相关联的反应机

Loop-Mediated Isothermal Amplification(LAMP) for Detection of Alicyclobacillus acidoterrestris in Foods

目的:利用环介导等温扩增技术建立食品中酸土环脂芽孢杆菌快速检测方法。方法:针对酸土环脂芽孢杆菌16S序列设计特异引物,再优选反应体系,用显色法检测实验结果。结果:该方法能够在63℃条件下1 H内检出食品中酸土环脂芽孢杆菌,所设计的引物有良好的特异性;灵敏度达6.7 Cfu/M l(弱阳性)。结论:该方法具有高效、特异性强和敏感性高等特点,可满足酸土环脂芽孢杆菌快速检测筛选的要求。Purpose: A loop-mediated isothermal amplification(LAMP) method was established for the detection of Alicyclobacillus acidoterrestris in foods.Methods: After optimization of the reaction conditions of LAMP including the concentrations of primers, reaction time and amplification temperature, the LAMP method was developed, and its sensitivity and specificity were evaluated.Results: The method was capable of rapidly and specifically detecting A.acidoterrestris in foods within 1 hour at a constant temperature of 63 ℃.The sensitivity of the method was 6.7 CFU/m L and the specificity was 100%.Conclusions: The LAMP method is efficient, highly sensitive and specific, and suitable for the rapid detection of A.acidoterrestris in various food samples.福建省漳州市自然科学基金项目(ZZ2012J16

长汀县赢坪史前遗址发掘简报

2012年福建博物院对赢坪两处遗址进行了抢救性考古发掘,获得了一批包括石器、陶器、铜器、石范等内涵丰富的文化遗物,这批遗物可进一步了解闽西地区的史前文化发展序列及文化面貌,并且对于多地区文化间的交流研究也有一定的作用