[Advances in the studies of concealed penis].

Concealed penis is usually found in children, which affects the patients both physiologically and psychologically. Some of the patients are wrongly treated by circumcision, which may bring about serious consequences to the sexual life of the patients in their adulthood. In the recent years, this disease has been receiving more and more attention from both doctors and parents.

[Application of tunica dartos flap coverage to tubularized incised plate urethroplasty].

Objective: To investigate the application of tunica dartos flap coverage to the prevention of urinary fistula in tubularized incised plate (TIP) urethroplasty.

Methods: This study included 140 cases of hypospadias following TIP urethroplasty, aged 1.9-22 (mean 5.

Photosensitizing effects of nanometer TiO2 on chlorothalonil photodegradation in aqueous solution and on the surface of pepper.

The present study examined the effects of anatase nanometer TiO2 on photochemical degradation of chlorothalonil in aqueous solution and on the plant surface. Results showed that nanometer TiO2 exhibited a strong photosensitizing effect on the degradation of chlorothalonil both in aqueous solution and on the surface of green pepper. The photosensitization rate was the highest in the sunlight compared to illumination under high-pressure mercury and UV lamps.

[Diagnosis and treatment of epididymal obstructive azoospermia by microsurgery].

Objective: To investigate the diagnosis and treatment of epididymal obstructive azoospermia (OA) by microsurgery.

Methods: We performed surgical scrotal exploration for 57 cases of OA whose obstruction was suspected to be in the epididymis. Those confirmed to be epididymal OA cases and with motile sperm in the epididymis underwent longitudinal-2-suture intussusceptive vasoepididymostomy (LIVES).

[Distribution and composition of organochlorine pesticides in farmland top soils of Anhui Province].

By using ultrasonic method and GC/ECD, this paper analyzed the distribution and composition of 8 kinds of organochlorine pesticides (alpha-HCH, beta-HCH, gamma-HCH, delta-HCH, op'-DDE, pp'-DDD, alpha-endosulfan, and chlorothalonil) in farmland top soils (0-20 cm) in 19 districts of Anhui Province, East China. The total concentration of the pesticides in the top soils ranged from 0 to 23.75 microg x kg(-1), among which, pp'-DDD and gamma-HCH were the major pollutants, with the mean concentration being 13.

[Indwelling the anterior urethral stent: a good treatment option for anterior urethral stricture].

Objective: To observe the clinical effect of indwelling the anterior urethral stent in the treatment of anterior urethral stricture.

Methods: We included 38 patients with anterior urethral stricture in the treatment group, and another 38 in the control, the former treated by indwelling the anterior urethral stent, and the latter by urethral dilatation. Then we analyzed the clinical results by comparing the Qmax, urinary hesitancy and numbers of urethral dilations between the two groups.

[Distribution and composition of organochlorine pesticides in surface water body of Chaohu Lake].

By the method of SPE-GC/ECD, this paper studied the distribution and composition of organochlorine pesticides (OCPs) in the surface water body of Chaohu Lake. At the 13 sampling sites of study area, a total of 16 kinds of OCPs, including HCHs, DDTs, beta-Endosulfan, Aldrin, hexachlorobenzene, and Heptachlor, were detected. The total OCPs concentration was 0.