[Radical variation of main wood properties and its relationship to climatic factors of Machilus pauhoi plantation].

To provide a theoretical foundation for forecasting wood properties, rotation selection and efficient use of timber, wood properties of 17 year-old Machilus pauhoi plantation were examined using SilviScan fast detection technology. The radical variation mode of anatomical traits, wood density, modulus of elasticity and their responses to climate change were analyzed. We also analyzed the relationship between growth ring width, growth ring age and wood property parameters.

[Neuroendoscopy for treatment of multilocular brain abscess in children].

Objective: Multilocular brain abscess in children is a serious neurosurgical emergency and remains a serious, life-threatening disease. This study evaluated the role of neuroendoscopy in treating multilocular brain abscess in children.

Methods: Between January 2002 and June 2007, 16 children with multilocular brain abscess underwent an operation using a pure endoscopic procedure.

[Clinical significance of the expression of the RCAS1 mRNA and protein in astrocytic tumors].

Objective: To determine the mRNA and protein expressions of RCAS1 in human astrocytic tumors, and to explore the relation between their expression and the genesis and development of tumor.

Methods: The RCAS1 mRNA expression in human astrocytic tumors was evaluated by RT-PCR, and the RCAS1 protein expression was studied by immunohistochemical staining.

Results: The quantities of RCAS1 mRNA expression between diffusive astrocytoma(Grade II) and anaplastic astrocytoma(Grade III), anaplastic astrocytoma and glioblastoma(Grade IV) were significantly different(P<0.