碳纤维加固在广州东镜新城一期会所梁粘贴工程中的施工技术体会

以广州东镜新城一期会所梁粘贴碳纤维为例,对碳纤维施工过程中的施工材料、工艺及质量控制、施工组织、质量保证、安全措施等进行了阐述和总结。     

Hartman-Mycielski functor of non-metrizable compacta

We investigate certain topological properties of the normal functor H, introduced by the first author, which is a certain functorial compactification of the Hartman-Mycielski construction HM. We prove that H is always open and we also find the condition when H X is an absolute retract, homeomorphic to the Tychonov cube.     

A simplified method for the determination of total homocysteine in plasma by electrospray tandem mass spectrometry

Hyperhomocysteinemia is a risk factor for different diseases. Several methods have been developed to analyze homocysteine and the immunometric ones, although expensive, they are in widespread use. A rapid LC‐MS/MS method for homocysteine assay has been developed for the application of large clinical chemistry routines. Selected reaction monitoring was performed through the transitions m/z 136.0→90.1 for homocysteine and m/z 140.0→94.0 for the internal standard. ESI was used to generate [H+] adduct ions. Chromatographic isocratic separation was achieved using a strong cation exchange column. The mobile phase was methanol/water (20:80 v/v, containing 0.1% formic acid and 1.5 mmol/L ammonium formate in the water phase) at a flow rate of 0.250 mL/min (35°C). Samples treatment consisted in the reduction with DTT and deproteinization with methanol. Recovery, linearity, LOD, LOQ and total imprecision were evaluated to validate the method. Homocysteine values on 100 serum samples were compared with those obtained by HPLC and immunometric methods. The method is robust, selective and precise in the whole range of values studied. Moreover, low reagent cost and easiness of sample treatment make this method useful, not only for research, but also for routine work.     

乌鲁木齐市城建系统1999～2003年投资优化模型的研究

根据乌鲁木齐市近几年的城市设施水平、２０００年规划、２０１０年远景目标，制定了１９９９－２００３年阶段性目标，对实现阶段性目标所需投资、这五年的城市设施建设财政拨款了做了概算。在拨款不足的条件限制下，运用０－１规划优化模型，探讨如何使有限的财政拨款，发挥尽可能大的社会、经济和环境效益。     

A new combinatorial approach to the construction of constant composition codes

Constant composition codes(CCCs)are a new generalization of binary constant weight codes and have attracted recent interest due to their numerous applications. In this paper, a new combinatorial approach to the construction of CCCs is proposed, and used to establish new optimal CCCs.     

基于熵权的混凝土大坝浇筑方案多目标决策研究

系统分析大坝施工的机械配置、混凝土坝面分仓等控制性因素,通过计算机施工仿真,分析施工方案的施工强度、工期等决策因素,结合机械设备投资费用,运用基于熵权的多目标决策理论,得到决策熵权,结合决策者的主观权重,建立浇筑施工方案多目标决策模型.工程应用说明,应用熵权进行多目标决策,能够较好地反映各决策指标的差异程度,具有概念清晰、实用的特点.     

Implementation of ISO/IEC 17025 standard in a nuclear analytical laboratory: The KAERI experience

The practical experience on the implementation of ISO/IEC 17025 compliant quality system in a nuclear analytical laboratory of the Korea Atomic Energy Research Institute (KAERI) is described. This paper summarizes the need for a quality system and accreditation, the process of a quality system implementation, the quality system structures, and the formal accreditation of our laboratory by the Korean Laboratory Accreditation Scheme (KOLAS). Also, the improvements in the management, technical and service quality which resulted from implementation of this system are briefly reported.     

Vocabulary of terms in protometrology

Protometrology is a new term recently proposed to designate the science of observation. As any field of knowledge needs a terminological system, in this article a system of terms and definitions on protometrology, with examples belonging to clinical laboratory sciences, is presented. This terminological system starts with the definitions of the two primitive concepts “object” and “property”.

Chern Forms on Mapping Spaces

We state a Chern–Weil type theorem which is a generalization of a Chern–Weil type theorem for Fredholm structures stated by Freed in [4]. Using this result, we investigate Chern forms on based manifold of maps following two approaches, the first one using the Wodzicki residue, and the second one using renormalized traces of pseudo-differential operators along the lines of [1, 19, 20]. We specialize to the case to study current groups. Finally, we apply these results to a class of holomorphic connections on the loop group . In this last example, we precise Freed's construction [5] on the loop group: The cohomology of the first Chern form of any holomorphic connection in the class considered is given by the Kähler form.     

Existence of good large sets of Steiner triple systems

The concept of good large set of Steiner triple systems (or GLS in short) was introduced by Lu in his paper “on large sets of disjoint Steiner triple systems”, [J. Lu, On large sets of disjoint Steiner triple systems, I-III, J. Combin. Theory (A) 34 (1983) 140-182]. In this paper a doubling construction for GLSs is displayed and some existence results are obtained.