Przewalskin A: A new C-23 terpenoid with a 6/6/7 carbon ring skeleton from Salvia przewalskii maxim

Przewalskin A (1), a novel C-23 terpenoid with a 6/6/7 carbon ring skeleton, was isolated from Salvia przewalskii. Its structure was determined by comprehensive 1D NMR, 2D NMR, and MS spectroscopic analysis and subsequently confirmed by a single-crystal X

Report of the pilot EAFM course, 23-28 June, 2013, Kota Kinabalu, Malaysia

Participants were exposed to concepts and information about EAFM using a structured, participatory method of delivery. The learning strategy involved pre- and post-course assessment as well as 4-6 month follow up at outcome level to assess improves EAFM practices. The report outlines methodology details of content and the daily feedback process.

Report of the final workshop on education, capacity development and monitoring in support of Bar Reef Marine Sanctuary (BRMS) management, Kalpitiya, Sri Lanka, 23 May, 2015

Objectives of the workshop included: presentation of research to stakeholders; briefing of stakeholders on project objectives, contents and activities; to get stakeholder perceptions and suggestions.

Hierarchical electrohydrodynamic structures for surface-enhanced Raman scattering (adv. Mater. 23/2012).

On page OP 175, U. Steiner and co-workers destabilise polymer trilayer films using an electric field to generate separated micrometre-sized core-shell pillars, which are further modified by selective polymer dissolution to yield polymer core columns surrounded by a rim and micro-volcano rim structures. When coated with gold and decorated with Raman active probes, all three structure types give rise to substantial enhancement in surface-enhanced Raman scattering (SERS). Since this SERS enhancement arises from each of the isolated structures in the array, these surface patterns are an ideal platform for multiplexed SERS detection.

城市湖泊地区的土地利用变化——以武汉东湖为例

利用1986、1993、1999年的LandsatTM卫星遥感影像和1981年地形图,借助GIS技术分析了城市湖泊地区—武汉东湖流域1987～1999间土地利用的时空变化及景观结构的变化。土地利用分为水体、针叶林、阔叶林、灌草、裸地、农业用地和城镇用地七种类型。各时期遥感影像分类精度都在85%以上。该流域土地利用变化以城镇大幅度扩展(从占全流域面积的9.1%到29.6%)、农业用地增加(从7.0%到13.9%)和由此引起的林地(从占全流域面积的33.6%到24.3%)、水体(从30.4%到23.8%)面积

Stiffness and strength of tridimensional periodic lattices

This paper presents a method for the linear analysis of the stiffness and strength of open and closed cell lattices with arbitrary topology. The method hinges on a multiscale approach that separates the analysis of the lattice in two scales. At the macroscopic level, the lattice is considered as a uniform material; at the microscopic scale, on the other hand, the cell microstructure is modelled in detail by means of an in-house finite element solver. The method allows determine the macroscopic stiffness, the internal forces in the edges and walls of the lattice, as well as the global periodic buckling loads, along with their buckling modes. Four cube-based lattices and nine cell topologies derived by Archimedean polyhedra are studied. Several of them are characterized here for the first time with a particular attention on the role that the cell wall plays on the stiffness and strength properties. The method, automated in a computational routine, has been used to develop material property charts that help to gain insight into the performance of the lattices under investigation. © 2012 Elsevier B.V.

团头鲂的胚胎及成体组织中八种同工酶系统的研究

用垂直的淀粉凝胶电泳方法分析了胚胎发育阶段(0—105小时)和成体6种组织中的乳酸脱氢酶(LDH)、苹果酸脱氢酶(MDH)、谷氨酸脱氢酶(GDH)、葡萄糖-6-磷酸脱氢酶(G6PD)、醇脱氢酶(ADH)、异柠檬酸脱氢酶(IDH)、酯酶(EST)和碱性磷酸酶(AKP)等8种同工酶系统的酶带。共约有23个基因座位在其胚胎发育期和成体组织中表达。所分析的大多数同工酶在团头鲂个体发生过程中表达的情况大致可分为3种类型:①胚胎发育期间持续存在的同工酶类,它们在成体组织中无特异性分布;②到胚胎发育后期才开始表达的同工

Identification of immune genes in grass carp Ctenopharyngodon idella in response to infection of the parasitic copepod Sinergasilus major

The parasitic copepod Sinergasilus major is an important pathogen of grass carp Ctenopharyngodon idella. To understand the immune response of grass carp to the copepod infection, suppression subtractive hybridization method was employed to characterize genes up-regulation during the copepod infection in liver and gills of the fish. One hundred and twenty-two dot blot positive clones from infected subtracted library were sequenced. Searching available databases by using these nucleotide sequences revealed that 23 genes are immune-related, including known acute-phase reactants, and four novel genes encoding proteins such as source of immunodominant MHC-associated peptides (SIMP), TNF receptor-associated factor 2 binding protein (T2BP), poliovirus receptor-related protein 1 precursor, glycoprotein A repetitions predominant (GARP). The differential expression of seven immune genes, i.e. GARP, alpha-2-macroglobulin, MHC class I, C3, SIMP, T2BP, transferrin, as a result of infection was further confirmed by RT-PCR, with the up-regulation of alpha-2-macroglobulin, MHC class I, C3, SIMP and T2BP in the liver of infected fish, and down-regulation of SIMP in the gills of infected fish. The present study provides foundation for understanding grass carp immune response and candidate genes for further analysis.

MTJ MRAM的特性分析与设计

对MTJ (磁隧道结）的GMR（巨磁阻）效应进行了分析。MTJ的结构、形态和工作条件会对GMR效应产生不同的影响。提出了一种4×1位MTJ MRAM（磁存储器）的电路结构，每个MRAM的存储单元由一个MTJ和一个MOSFET构成，用MTJ两磁极磁化方向的相对取向表示所存储的数据，数字线和位线电流产生磁场的共同作用可完成MRAM数据的写入。

3～5.3μmIn_xGa_(1-x)As/Al_yGa_(1-y)As/Al_zGa_(1-z)As非对称台阶量子阱红外探测器

于2010-11-23批量导入

利用CBE技术在Si衬底上生长GaAs薄膜

于2010-11-23批量导入