The Construction of Teachers 'Learning Community of National Defense Education in the Perspective of Teachers' Professional Development

国防教育教师是普通高校师资队伍中特殊且重要的组成部分，是保障学校国防教育质量的关键因素。这就需要培养造就一支高素质专业化的教师队伍，通过有效渠道与方式辅助国防教育教师的专业发展。 目前学界普遍认为教师学习共同体能突破传统培训的单一形式，是促进教师专业发展的有效途径。当前，通过教师自发形成等方式，国防教育教师学习共同体已初具雏形，一定程度上促进了教师的专业发展，也有利于集中一批不同学科背景的国防教育教师进行学科建设。为充分发挥学习共同体的作用，迫切需要在现有雏形基础上对其进行制度上的规范和完善。 普通高校国防教育教师学习共同体按照活动目的可以分为教学型学习共同体和研究型学习共同体。按照组织形...National defense education teachers are special and important components of teachers in ordinary colleges and universities, and are the key factors to guarantee the quality of national defense education. This requires training to create a high-quality professional teachers, through effective channels and ways to assist the professional development of national defense education teachers. At presen...学位：教育学硕士院系专业：教育研究院_国防教育学学号：2572014115182

Size Distribution of Particle and Polycyclic Aromatic Hydrocarbons in Particle Emissions from Simulated Emission Sources

采用再悬浮箱模拟得到不同粒径的烹调油烟、生物质和塑料燃烧烟尘、汽车尾气和发电机烟气等颗粒,并用gC/MS对不同粒径颗粒中18种多环芳烃(PAHS)进行了分析.结果表明,烹调油烟中颗粒物存在0.44~1.0μM和2.5~10μM两个峰值,稻草和木材燃烧排放烟尘只有0.44~1.0μM一个峰值,塑料燃烧排放烟尘的峰值不明显,汽车尾气尘因含有大量的水汽导致其粒径峰值出现在2.5~10μM,而发电机排放的烟尘约93%集中在≤2.5μM的粒径范围.烹调油烟和汽车尾气尘中低环数PAHS在2.5~10μM范围内的峰值明显;随环数增加,0.44~1.0μM范围内的峰值变得明显;不同排放源亚微米颗粒中单一PAH占全部颗粒态中该PAH的比例都呈现随分子量的增大而增大的趋势.烹调油烟和燃烧排放颗粒中PAHS的组成以菲占主导,但汽车尾气和发电机烟尘中含量最高的PAHS分别是萘和苯并[g,H,I]苝.来源特征比值的比较显示,烹调油烟与生物质燃烧颗粒中PAHS的源特征较为接近,但两者都不同于汽车尾气和发电机烟尘.Particles from cooking lampblack,biomass and plastics burning smoke,gasoline vehicular exhausts and gasoline generator exhausts were prepared in a resuspension test chamber and collected using a cascade MOUDI impactor.A total of 18 polycyclic aromatic hydrocarbons( PAHs) associated with particles were analyzed by GC-MS.The results showed that there were two peaks in the range of 0.44-1.0 μm and 2.5-10 μm for cooking lampblack,and only one peak in the range of 0.44-1.0 μm for straw and wood burning smoke.But there were no clear peak for plastics burning smoke.The peak for gasoline vehicular exhausts was found in the range of 2.5-10 μm due to the influence of water vapor associated with particles,while the particles from gasoline generator exhausts were mainly in the range of ≤2.5 μm( accounting for 93% of the total mass).The peak in 2.5-10 μm was clear for cooking lampblack and gasoline vehicular exhausts.The peak in the range of 0.44-1.0 μm became more and more apparent with the increase of PAHs molecular weight.The fraction of PAH on particles less than 1.0 μm to that on the total particles increased along with PAH's molecular weight.Phenanthrene was the dominant compound for cooking lampblack and combustion smoke,while gasoline vehicular exhausts and generator exhausts were characterized with significantly high levels of naphthalene and benzo[g,h,i]perylene, respectively.The distribution of source characteristic ratios indicated that PAHs from cooking lampblack and biomass burning were close and they were different from those of vehicular exhausts and generator exhausts.国家自然科学基金项目(40971257;41171365); 环境保护公益性行业科研专项(201009004

3D-printed integrative probeheads for magnetic resonance

射频探头前端作为核磁共振设备的核心部件之一，极大程度的决定着系统实验性能的优劣。探头前端通常由射频线圈、射频电路及样品检测管道等部分组成。现有的射频线圈制作技术主要是通过手工或机械手段按照所需的线圈形状进行绕制。但是，当线圈结构较为复杂、不规则，或体积尺寸较小时，常规绕制方法便难以满足结构设计和制造的精度需求，因此造成线圈性能的劣化，增大检测区域的射频场不均匀性，对核磁共振检测产生负面影响。本研究中，利用3D打印熔融沉积制造或光敏树脂选择性固化技术精确加工出一体化磁共振探头前端，使用常温液态金属填充线圈模型管路形成射频线圈，搭建出稳定的一体化磁共振射频探头。利用高精度3D打印和液态金属灌注技术制备出包含有射频线圈和定制化样品管道结构在内的一体化磁共振射频探头前端，克服了传统磁共振三维微型线圈成型困难、与样品腔匹配程度差等问题，提高了探头的信噪比，为定制化的磁共振检测提供了新思路。 该工作由厦门大学电子科学与技术学院陈忠教授、游学秋副研究员和孙惠军高级工程师共同指导完成，博士研究生谢君尧为论文第一作者。厦门大学电子科学与技术学院黄玉清高级工程师、王忻昌副教授、倪祖荣助理教授、硕士研究生张德超，化学化工学院杨朝勇教授、博士研究生李星锐，萨本栋微米纳米科学技术研究院陈宏教授为合作作者。【Abstract】Magnetic resonance (MR) technology has been widely employed in scientific research, clinical diagnosis and geological survey. However, the fabrication of MR radio frequency probeheads still face difficulties in integration, customization and miniaturization. Here, we utilized 3D printing and liquid metal filling techniques to fabricate integrative radio frequency probeheads for MR experiments. The 3D-printed probehead with micrometer precision generally consists of liquid metal coils, customized sample chambers and radio frequency circuit interfaces. We screened different 3D printing materials and optimized the liquid metals by incorporating metal microparticles. The 3D-printed probeheads are capable of performing both routine and nonconventional MR experiments, including in situ electrochemical analysis, in situ reaction monitoring with continues-flow paramagnetic particles and ions separation, and small-sample MR imaging. Due to the flexibility and accuracy of 3D printing techniques, we can accurately obtain complicated coil geometries at the micrometer scale, shortening the fabrication timescale and extending the application scenarios.The work is supported by the National Natural Science Foundation of China (Grants U1632274, 11761141010, U1805261, 11475142, 22073078, and 61801411), and China Postdoctoral Science Foundation (2017M622075).研究工作得到国家自然科学基金、中国博士后科学基金等项目支持

The Practice and Thinking of Establishing Library Studio——Taking Xiamen Library as an Example

为提升图书馆服务,厦门市图书馆借鉴影视界、艺术界、建筑界等工作室建设经验,创建多种工作模式的工作室。文章对工作室建设的意义、主题的选择、运作规划、效益评估等方面进行探讨,提出工作室应结合当地特色及图书馆优势,选择主题和适合的工作模式,规划好近、中、长期工作目标,推动工作室深入发展。In order to improve library’s services and establish brand image,Xiamen Library uses the experiences of building studio from filmdom,art world and architecture for reference,establishes studios in different operating modes.This paper discusses the meaning of studio,its theme choice,operational planning,benefit evaluation,etc.The authors advocate that studio should choose the theme and the suitable operating mode by combining local characteristics with library’s advantages;work out short term,medium and long term plan to promote the further development of library studio

STUDIES ON THE MORPHOLOGY CHARACTERS AND CHEMICAL COMPOSITION OF [ABELMOSCHUS MANIHOT(L.)]SEEDS

【中文摘要】 本文报道了黄蜀葵种子的形态特征和化学成分。研究结果表明 :种子含有脂肪油 ,含量为31 16 % ,其主要成分为 :亚油酸 (82 179% )、油酸 (9 195 % )、棕榈酸 (4 75 6 % )、硬脂酸 (2 6 81% )、亚麻酸 (0 32 8% )等 ,此外 ,还含有 18种氨基酸和 2 4种矿质元素。其种子含有多种氨基酸和矿质元素 ,而且种子油含有大量人体所必需的不饱和脂肪酸 ,含量达 91 815 %。因此 ,其种子和种子油具有较高的营养价值和医疗保健功效 ,具有潜在开发利用的价值。 【英文摘要】 Abelmoschus manihot (L.)]seed morphology chatacters is reported relatively entire in the article at first.And the chemical composition of its seeds have been studied either.The results showed:there are plenty of fatty acids in the seed oil which is necessary for human body.The main component were:linolic acid(82.179%),oleic acid(9.195%),palmitic acid(4.756%),stearic acid(2.681%),linolenic acid(0.328%)etc,and eighteen kinds of amino acids,twenty four kinds of mineral elements from the seed were also determi...福建省教委基金资助项目 (K20096) ;国家中医药管理局和福建省卫生厅基金项目 (NO.2000JP40

从发酵液中萃取青霉素时用阴、阳离子表面活性剂作破乳剂的研究Ⅰ.阳离子表面活性剂

本文研究了青霉素萃取工艺中的乳化成因,并用常用的阳离子表面活性剂十五烷基溴化吡啶(PPB)及十二烷基三甲基溴化铵(1231)为破乳剂研究其破乳能力及其作用规律,结果表明,PPB和1231在较高浓度下都有较好的破乳效果