Publications by authors named "R Sur"
We report herein that photoinduced CO enabled reductive intramolecular radical cyclization of a variety of aryl iodide derivatives to the corresponding phenanthridinone, oxindole, isoindolinone, and spirolactam derivatives in good yields. Preliminary mechanistic studies suggested the generation of CO through homolysis of cesium formate in the presence of light, and the further involvement of CO and the aryl radical was directly proved by trapping with diphenyl styrene and TEMPO.
View Article and Find Full Text PDFCurrent publications that are shaping public perception repeatedly claim that residues of plant protection products (PPP) in the environment demonstrate gaps in assessing the exposure and effects of PPP, allegedly revealing the inability of the European regulatory system to prevent environmental contamination and damage such as biodiversity decline. The hypothesis is that environmental risk assessments rely on inappropriate predictive models that underestimate exposure and do not explicitly account for the impact of combinations of environmental stressors and physiological differences in stress responses. This article puts this criticism into context to allow for a more balanced evaluation of the European regulatory system for PPP.
View Article and Find Full Text PDFArticle Synopsis
- Developed a nonbiohazardous simulator for ultrasound-guided percutaneous nephrolithotomy using expert feedback and modern education theory.
- A prototype was created with realistic anatomical features through 3D printing and hydrogel molding, and validated by expert surgeons and participants in multicenter trials.
- The simulator showed high satisfaction ratings and significant skill improvements for residents, making it an effective training tool for urologic education.
Purpose: This study reports on a prospective, multicenter, single-arm, clinical trial utilizing the SonoMotion (San Mateo, California) Break Wave lithotripsy (BWL) device to fragment urinary stones.
Materials And Methods: Patients with a urinary stone underwent a single treatment of 30 minutes and peak negative pressure of 4.5 to 8 MPa.