a r t i c l e i n f o Keywords: Laser-induced breakdown spectroscopy Double pulse LIBS Laser ablation Laser heating Laser-induced particles Double-Pulse Laser-Induced Breakdown Spectroscopy of iron using both Nd:YAG and TEA–CO 2 lasers has been investigated to better understand mechanisms of signal enhancement. The signal dependence on the delay between the two laser pulses shows an enhanced si...

abstract. in recent years several studies have shown that  control charts with adaptive schemes or double sampling plans detect both small and moderate shifts in the process mean more quickly than the traditional shewhart  chart. in the classical double sampling  chart, the difference between two points were placed in the central region of first stage was not considered. in this study, a new co...

OBJECTIVE To verify the performance of a new method for obtaining platelet-rich plasma, while avoiding contamination of the sample during its processing. STUDY DESIGN Twenty healthy patients were selected, from whom 21 ml of blood was extracted. We then proceeded to study the platelets and growth factors in basal blood after centrifuging the sample by using a new closed system for obtaining p...

Hydrogen plasma reduction of fluorine doped tin oxide is a beneficial method to form nanodroplets on the sample surface directly in plasma-enhanced chemical vapor deposition reactor. The formation catalyst droplets crucial initial step for vapor-liquid-solid growth silicon nanowires radial junction solar cells and fuel cell technology. We present an original optical model which allows us trace ...

A competitive, double antibody enzyme immunoassay for oxytocin in a heterologous system was developed. Horseradish peroxidase was conjugated with oxytocin using N-succinimidyl 3-(2-pyridyldithio) propionate, and rabbit anti-oxytocin serum was produced by immunization of oxytocin-bovine serum albumin complex which was prepared by the carbodiimide method. The sensitivity of the assay was 4 microI...

  Background: Equine chorionic gonadotropin (eCG) is commonly used in association with a progestagen treatment to synchronize estrus of goats and ewes during breeding and non-breeding seasons. Classical purification of the eCG from serum includes pH fractionation with metaphosphoric acid two ethanol precipitation steps as...