Dynamical framework with blocking topography coordinates for atmospheric GCM and its validation

The dynamical framework with Blocking Topography Coordinates (hereafter, BTC), which is suited to handle the steep topography for the atmospheric general circulation models, is presented in this paper, together with its validation results. The integral properties of both the differential and finite-difference equations for the BTC dynamical core are: gross mass conservation, quadratic conservation for advection terms, Coriolis force does not change the kinetic energy, conservation of total available energy. The improved nonlinear iteration scheme is utilized for the time-integration. The energy conservation for BTC dynamical core is validated by using the integration results from 9-layer and 21-layer version respectively. Comparison results show that, the changes of the kinetic energy and total available potential energy during the integration are quite close for both the BTC dynamical framework and the dynamical framework of IAP 9-level and IAP 21-level AGCM, and this may suggest that the BTC dynamical core can be used for long-term integration with good computational stability. Furthermore, the BTC dynamical core has the advantage over the terrain following (sigma) coordinates in its better representation of the influence of the large-scale topography on the atmospheric general circulation. Finally, the correctness and reasonableness of the BTC dynamical core has been further proved by the numerical simulation of the topography influence on the quasi-stationary planetary wave with 21-layer version of BTC dynamical framework.     

Design and application of 60mer oligonucleotide microarray in SARS coronavirus detection

In April 2003, a novel coronavirus[1,2] which was associated with cases of Severe Acute Respiratory Syn-drome (SARS) was first isolated and sequenced in Canada. The genome of SARS coronavirus (SARS-CoV) is 29727[3] nucleotides in length and has 11 known open reading frames (ORFs). Although the genome organiza-tion of this virus is similar to that of other coronaviruses, phylogenetic analyses and sequence alignment show that SARS-CoV is not closely related to any of the previously ch…     

DNA分子标记在果树上的应用

介绍了在果树上常用的DNA分子标记的原理和特点，并对其在果树的分子遗传图谱和指纹图谱的构建，品种鉴别、系谱分析和分类，基因定位与分子标记辅助选择等方面的应用进行了综述。     

对混炼型聚氨酯弹性体生胶可塑度影响因素的探讨

详细论述了混炼型聚氨酯弹性体(MPU)的加工过程和特性，通过实验指出了生胶可塑度与MPU的加工过程和质量有密切的关系，影响可塑度的因素有生胶中硬链段的含量、聚酯二醇的结构和生胶的分子量。     

昆虫病原真菌分子生物学研究进展

本文综述了用现代分子生物学技术研究昆虫病原真菌的进展。其内容包括利用原生质体融合、基因工程等技术进行菌株遗传改良和利用酶谱分析、分子遗传学等技术研究其遗传变异。     

基于PLC的变压吸附制高纯氧系统

研究了采用沸石分子筛和碳分子筛吸附床的变压吸附制高纯氧工艺以及采用基于PLC控制系统对流量、压力和电磁阀进行的调节和控制，确立了两级变压吸附制高纯氧的工艺流程和各吸附床的最佳吸附周期，分析了排气量对氧气纯度的影响．实验结果表明氧气的最高纯度可达到99．5％．     

似然比检验和贝叶斯推论在雉科分子系统学中的应用

应用似然比检验和贝叶斯推论进行雉科分子系统学研究．所用的56条纫胞色素b基因全序列代表了雉科24属50种以及作为外类群的6个相关属．等级制似然比检验表明该数据集的最佳进化模型为GTR I——G。建立在坚实的统计学基础上的贝叶斯系统树表明雉科可以分为3个分支．特别是包括角雉、松鸡、火鸡和gallopheasant等在内的第3分支的单系群性质得到了充分的支持．深层分支格局的高分辨率和高支持率说明将雉科划分为雉族和鹑族是人为的．结果表明，似然比检验和贝叶斯推论是分子系统学研究的强有力工具．     

苯酚在ITQ-1分子筛中吸附特性的分子模拟研究

用巨正则统计系综蒙特卡罗模拟,研究了苯酚分子在ITQ-1分子筛中的吸附特性,从苯酚分子的粒子分布云图上,可发现分子的扩散和吸附在十二元环通道和十元环通道内都可进行。从一系列不同压力下的蒙特卡罗模拟还预测了苯酚在ITO-1中的吸附等温线。模拟结果表明,苯酚分子在一定压力和温度下,可通过十元环通道或连接十二元环超笼的十元环窗口到达分子筛孔道内部,达到较好的吸附平衡状态;同时还模拟了苯酚在水分子存在时,在ITQ～1分子筛中的吸附情况,结果表明,水分子的存在可降低苯酚分子的吸附,但从整体看影响较小。     

振动方程耦合类型的注记

采用动静法建立振动系统动力学方程，通过具体例子的讨论和一般情形的分析，论证了振动方程的耦合类型与系统广义坐标选取无关.     

核衣壳蛋白VP39结构分析与杆状病毒的进化研究

在测定了BmNPV—Ch(中国株)和HaMNPV vp39基因序列的基础上，推导出相应的氨基酸顺序，并与AcMNPV、OpMNPV、LdMNPV、BmNPV—Ja(日本株)的VP39蛋白的氨基酸顺序进行了比较。分析结果表明：在已知的各种杆状病毒中，VP39蛋白是一个保守性较强的蛋白质，Bm—NPV—Ch VP39蛋白与AcMNPV、OpMNPV、LdMNPV、BmNPV—Ja和HaMNPV VP39蛋白的氨基酸同源性分别是93．7％、58．2％、39．9％、97．1％、92．8％。HaMNPVVP39蛋白与AcMNPV、OpMNPV、LdMNPV、BmNPV—Ja和BmNPV—Ch VP39蛋白的氨基酸同源性分别为97．3％、59．0%、40．2%、93．1％、92．8％。通过氨基酸亲水性分析比较，探讨了VP39蛋白结构与杆状病毒进化间的关系。