[Study on the Effects of Different Ferron System, Ferron Solubility, Experimental Temperature and Other Factors for the Accurate Determination of Mononuclear Aluminum Concentration in Aqueous Solution].

Ferron colorimetric method has been widely used in aluminum speciation analysis. However, some important factors that may affect the accurate determination of mononuclear Al concentration have not been studied yet. Using molar absorption coefficient ε as a key indicator, the critical issues in Al-Ferron coloring reaction system have been investigated experimentally in this paper, including different Ferron system, Ferron solubility, experimental temperature, ionic strength and the reference system.

Comparison of lobe-specific mediastinal lymphadenectomy versus systematic mediastinal lymphadenectomy for clinical stage T₁a N₀ M₀ non-small cell lung cancer.

Objective: This study was to explore the appropriate extent of mediastinal lymph node dissection for clinical stage T₁a N₀ M₀ non-small cell lung cancer (NSCLC) by comparison between two modes of mediastinal lymph node dissection.

Materials And Methods: A total of 96 clinical stage T₁a N₀ M₀ NSCLC cases received radical surgery were randomly divided to lobe-specific mediastinal lymphadenectomy (LL) group and systematic mediastinal lymphadenectomy (SL) group from the year 2004 to 2008. The effects of SL and LL on morbidity, N staging, overall survival (OS) and disease-free survival (DFS) were investigated.

18F-FDG uptake as a biologic factor predicting outcome in patients with resected non-small-cell lung cancer.

Background: The outcome of surgical treatment of non-small-cell lung cancer (NSCLC) remains poor. In many patients the biological behavior of NSCLC does not follow a definite pattern, and can not be accurately predicted before treatment. (18)F-fluoro-2-deoxy-glucose ((18)F-FDG) uptake on positron-emission tomography (PET) is associated with the aggressiveness of NSCLC.

[Theoretical studies on fluorescence spectra of polyamic acid and it's grafted derivatives].

A theoretical study on the polyamic acid (PAA) and its derivatives with different side chain (GPAA1-4) by semi-empirical PM3 is presented in this paper. After optimization, the authors get their balanceable geometric configurations. For all optimal geometric configurations, there is no imaginary frequency in vibrational analysis, which proves that the geometric configurations are stable.