Impact of previously failed extracorporeal shock wave lithotripsy on ureterorenoscopy outcomes in upper urinary tract stones: a prospective comparative study.

Objective: We sought to prospectively evaluate the impact of previously failed SWL on subsequent URS outcomes in the treatment of upper urinary tract stones.

Materials And Methods: Between May 2021 and May 2023, one hundred thirty-six patients with proximal ureteral stones < 1.5 cm and renal stones < 2.

Dissipation dynamic, residue distribution and processing factor of hexythiazox in strawberry fruits under open field condition.

Two independent field trials were performed to investigate the dissipation and residue levels of hexythiazox in strawberry. The study presents a method validation for extraction and quantitative analysis of hexythiazox residues in strawberry using HPLC-DAD. The results shown that the mean recoveries ranged from 85% to 93%, furthermore the intra- and inter-day relative standard deviations were less than 10%.

Residues, dissipation and safety evaluation of chromafenozide in strawberry under open field conditions.

The dissipation and residual levels of new generation insecticide chromafenozide in strawberries under field conditions were studied using HPLC-DAD after QuEChERS extraction. The method was validated using blank samples spiked at three levels and the results showed that recoveries ranged from 99% to 110%. The intra- and inter-day relative standard deviations were less than 7.

Determination of etoxazole residues in fruits and vegetables by SPE clean-up and HPLC-DAD.

A method for determination of etoxazole residues in apples, strawberries and green beans was developed and validated. The analyte was extracted with acetonitrile from foodstuff and a charcoal-celite cartridge was used for clean-up of raw extracts. Reversed phase high performance liquid chromatography with photodiode array detector (HPLC-DAD) was used for the determination and quantification of etoxazole residues in the studied samples.