[Quality Optimization Method for Ambient CO(2) Inversion of High Resolution Fourier Transform Infrared Spectrum].

CO(2) retrievals with high quality facilitate resolving the sources and sinks of CO(2) are helpful in predicting the trend in climate change and understanding the global carbon cycle. Based on a nonlinear least squares spectral fitting algorithm, we investigate the optimization method for CO2 products derived from ground-based high resolution Fourier transform infrared spectra. The CO(2) vertical column densities (VCDs) are converted into column-averaged dry air mole fraction XCO(2) by using the fitted O(2) VCDs, and thus the system errors (e.

[Sensitivity Study of Aerosol Properties from Observation of Atmospheric Ring Effect].

Ring effect is defined as the phenomenon that the depth of solar Fraunhofer lines in scattered light is less than those observed in direct sunlight. The aerosol could change the light path and the scattering properties in the atmospheric, and influence Raman Scattering Possibility of the photons, and finally affect the filling-up effect. Aerosol parameters (aerosol optical depth, boundary layer height, single scattering albedo, asymmetric factor) could be obtained by observation of the Ring effect in different aerosol condition.

[Measurement and analysis of nitric oxide gas based on the algorithm of non-dispersive ultra-violet].

Using photodiode array (PDA) detector and spectrometer, a method on the basis of algorithm of nondispersive ultraviolet (NDUV) is described to measure and analyze nitric oxide (NO) gas. With the introduction of light source impact factor and absorption spectrum impact factor, fitting equation and correlation coefficient between absorbance and concentration was acquired through comparative analysis on the total intensity of nitric oxide absorption and non-absorption spectrum, which are collected in different integration times and within different wavelength width. The results show that second order fitting correlation coefficient related to absorbance and concentration is above 0.

[The correction of cloud effect on satellite near-infrared measurement].

The cloud effect correction is very significant to satellite remote sensing of atmospheric trace gases from near-infrared spectrum, even with a small amount of cloud, the remaining effects can still cause retrieval error even reaching up to 100%. Atmospheric carbon monoxide (CO) is one of the most important pollutants in the troposphere. This study, takeing CO as the example, described the cloud effect and the cloud correction on retrieval result from SCIAMACHY measurement.

[Research on the method of interference correction for nondispersive infrared multi-component gas analysis].

A method of interference correction for nondispersive infrared multi-component gas analysis was described. According to the successive integral gas absorption models and methods, the influence of temperature and air pressure on the integral line strengths and linetype was considered, and based on Lorentz detuning linetypes, the absorption cross sections and response coefficients of H2O, CO2, CO, and NO on each filter channel were obtained. The four dimension linear regression equations for interference correction were established by response coefficients, the absorption cross interference was corrected by solving the multi-dimensional linear regression equations, and after interference correction, the pure absorbance signal on each filter channel was only controlled by the corresponding target gas concentration.

Extraperitoneal laparoscopic adenomectomy for benign prostatic hyperplasia.

Objectives: We assessed the feasibility of extraperitoneal laparoscopic prostatectomy in pilots in China.

Materials And Methods: Extraperitoneal laparoscopic retropubic prostatectomy has been performed in 45 patients with prostatic weight more than 60 g between May 2005 and May 2008. The laparoscopic approach was standard in all cases as follows: creation of a preperitoneal workspace, haemostatic control of lateral venous vesicoprostatic pedicles, transversal anterior incision of the prostate capsule, prostatic adenomectomy and retrieval of the specimen.

[Small interfering RNA inhibits the expression of connexin43 in the human corpus cavernosum penis smooth muscle cells].

Objective: To inhibit the expression of connexin43 (Cx43) in the human corpus cavernosum penis smooth muscle cells by small interfering RNA (siRNA) and detect the gap junction intercellular communication (GJIC), and to investigate the application of siRNA technology in the gap junction of corpus cavernosum penis smooth muscle cells and its role in the penile erection process.

Methods: With the help of the software of Ambion Corporation, the specific recombinant plasmids with siRNA targeting human Cx43 gene were constructed. The recombinant plasmids having been stably transferred into human corpus cavernosum penis smooth muscle cells for 48 hours, semi-quantitive reverse transcription polymerase chain reaction (RT-PCR) and Western blotting techniques were used to examine the inhibitory effects of siRNA on the expressions of the Cx43 gene and protein, in comparison with the siRNA negative control and the blank control group, respectively.