A Comparison of the Modified Alvarado Score and the Raja Isteri Pengiran Anak Saleha Appendicitis (Ripasa) Score in a Southeast Asian Population With Histopathology as the Gold Standard.

Background The diagnosis of acute appendicitis has remained difficult despite it being one of the most common surgical emergencies in the world. One of the most frequently used scoring systems is the Modified Alvarado Score (MAS). However, the MAS has been known to be less efficient in Asian populations.

Ternary nanohybrid of reduced graphene oxide-nafion@silver nanoparticles for boosting the sensor performance in non-enzymatic amperometric detection of hydrogen peroxide.

A sensitive and novel electrochemical sensor was developed for the detection of hydrogen peroxide (HO) using a reduced graphene oxide-nafion@silver6 (rGO-Nf@Ag6) nanohybrid modified glassy carbon electrode (GC/rGO-Nf@Ag6). The GC/rGO-Nf@Ag6 electrode exhibited an excellent electrochemical sensing ability for determining HO with high sensitivity and selectivity. The detection limit of the electrochemical sensor using the GC/rGO-Nf@Ag6 electrode for HO determination was calculated to be 5.