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At room temperature, the mid-infrared spectra of geometrically frustrated natural atacamite (hydroxyl copper chloride, beta-Cu2(OH)3Cl) in the range of 4 000-400 cm(-1) were measured by FTIR spectrometers, and meanwhile its Raman spectrum in the range of 4 000-95 cm(-1) was obtained by Jobin Yvon LabRAM HR800 Raman spectrometer. According to its crystal structure parameters, the authors confirmed the characteristic peaks of sample 4 000-2 500-1 000 cm(-1) in the functional group region and 1 000-550-200-95 cm(-1) in the fingerprint region, and also explored its microscopic origin Five distinct regions were assigned: the hydroxyl stretching vibration v(O-H) determined by the overall environment around the hydroxyl group; the overtones generated by the sum or multiplication of fundamental frequencies of hydroxyl bending vibration; the hydroxyl bending vibration modes delta(O-H) of the combination of delta(Cu-O-H) and delta(O-H...HCl); the vibration modes of strongly bonded planar CuO4 units; the vibration modes of weakly bonded linear-triatomic chain Cl-Cu-O/Cl. The bands were assigned in accordance with its crystal structure parameters, which is more reasonable to establish the relationship between its molecular structure and its respective spectral properties.

Objective: To analyze the relative factors of early-term restenosis after artificially grafting bypasses on chronic ischemia of lower extremities., Methods: From January 2006 to September 2007, 40 cases suffered from chronic ischemia of lower extremities were treated by single side femoropopliteal bypass were followed up during 6 months after operation. There were 36 male and 4 case female with a mean age of (66 +/- 9) years old. Lipid, fibrinogen (FIB) and hypersensitive C reactive protein (hsCRP) were chemical examined during peri-operation. Basing on the degree of restenosis in vascular anastomosis by Color Doppler graft scan, all the patients were divided into light, moderate and severe groups, respectively. Biochemical indicators and cytokines were investigated such as lipid, FIB, hsCRP, IL-6, transforming growing factor beta1 (TGF-beta1). Possible risk factors resulting in restenosis were compared statistically among three groups with SPSS 15.0., Results: Restenosis were more severe among the patients with concomitance disease such as diabetes mellitus and smoking after operation. Relative risk were 6.47 and 7.92, respectively. There are significant difference in total cholesterin, low density lipoprotein, FIB, hsCRP, IL-6 and TGF-beta1 among three groups during six months after operation (P < 0.05). Multiple linear regression showed that FIB and TGF-beta1 may be the risk factors to intimal hyperplasia., Conclusion: Diabetes mellitus, smoking and higher levels of FIB may be the major high risk factors resulting in neointima hyperplasia and anastomosis restenosis.

Based on GIS technology and by using moving window method, the characteristics of landscape pattern in Northeast China in 2006 and the relationships between these characteristics and environmental factors such as precipitation, air temperature, altitude and human activities were studied. In the study area in 2006, forest land had the largest proportion, followed by the cultivated land, occupying 61.69% and 25.11% of the total respectively, and the landscape diversity had the characteristics of circle-zoning structure, which provided a buffer region for fragmented and sensitive regions, making the adverse ecological consequences be reduced to or restricted in a definite scale. The correlation coefficients of landscape indices with precipitation and air temperature were less than 0.4, and those with altitude were less than 0.07, illustrating that the heterogeneity of landscape pattern in study area was not dependent on single natural factors.

By using landscape-level animal population simulator (LAPS), the spatiotemporal dynamics of the main prey populations of Panthera tigris from 1990 to 2009 in East Wanda Mountains were simulated, based on the different scenarios of accidental mortality and carrying capacity that could represent the influence of direct and indirect human disturbance. The effects of the accidental mortality and carrying capacity on the population dynamics were studied, and the spatiotemporal distribution of animal blocks was exhibited explicitly in the study area, with the individual density in different patches compared. The results showed that compared with carrying capacity, accidental mortality had more effects on prey populations, and the population density was significantly higher in shrubs than in broad-leaved forests. The conclusions made in this study could provide scientific basis for the conservation and management of P. tigris' s preys in East Wanda Mountains, while the quantitative validation of the conclusions still needs further investigation.

Based on the Landsat-TM images in 1990 and 2005, and with principal component analysis, this paper studied the land use change on the Antaibu opencast coal mine of Pingshuo mine area in Shanxi Province in 1990-2005. The results showed that the spatial characteristic of spectra on the opencast coal mine varied with land type, area distribution, and landscape pattern. The first and second principal components of the TM images had obvious spatial characteristic, i. e., the first principal component highlighted the characters of excavation and transportation area, slope area, and cumuli and stripping area, while the second principal component highlighted the information of higher and lower vegetation-cover area. According to the land use type, the study area was classified into stripping area, excavated area, land reclamation area, and original landform area. In 1990 -2005, the excavated area had a little change, original landform area reduced by 15.263 km2 reclamation area increased by 8.513 km2, and stripping area increased constantly from 5.522 km2 in 1990 to 11.889 km2 in 2005.

In this paper, an individual-based catchment scale forest dynamic model was developed, and applied to a 400 years simulation of a real catchment. The simulation included pretreatment of topographic data, running of modified MTCLIM, and simulation of forest dynamics. The development and validation processes of this model were described, and the details of the model, including the application of GIS and the parameterization of climate and physiological factors, were presented. The simulation results of a real catchment (139 hm2) in Wolong Reserve showed that this model could describe the physiological processes and spatial distribution of tree individuals, and realize the simulation of the spatial pattern and dynamics of forest in whole catchment.