Patients with acute abdominal or acute thoracic events occasionally develop a curious electrocardiographic ST-segment elevation, where the upward shift of the baseline starts before the onset of the QRS complex. The shape of the complexes resembles a German military spiked helmet. It has been previously postulated that the “spiked helmet” sign is the result of an acute rise in intraabdominal or...

High-performance liquid chromatography (HPLC) provides a quick and efficient tool for accurately characterizing aflatoxigenic non-aflatoxigenic isolates of Aspergillus flavus. This method also quantitative analysis AFs in The method’s recovery was assessed by spiking mixture AF at different concentrations to the testing medium. validity confirmed using strains A. HPLC system, coupled with fluor...

A number of approaches for evaluating recovery and its contribution to uncertainty budgets for analytical methods are considered in detail. The recovery, R, for a particular sample is considered as comprising three elements, R̄m, Rs and Rrep. These relate to the recovery for the method; the effect of sample matrix and/or analyte concentration on recovery; and how well the behaviour of spiked sam...

Consider a spiked random tensor obtained as mixture of two components: noise in the form symmetric Gaussian $p$-tensor for $p\geq 3$ and signal low-rank tensor. The latter is defined linear combination $k$ independent rank-one tensors, referred to spikes, with weights signal-to-noise ratios (SNRs). entries vectors that determine spikes are i.i.d. sampled from general probability distributions s...

Food toxins are a hidden threat that can cause cancer and tremendously impact human health. Therefore, the detection of food in timely manner with high sensitivity is paramount importance for public health safety. However, current methods relatively time-consuming not practical field tests. In present work, we developed novel aptamer-chip-based sample-to-answer biosensor (ACSB) ochratoxin A (OT...

Sepsis is associated with high morbidity and mortality rates worldwide. Rapid and reliable diagnostic methods are needed for efficient and evidence-based treatment of septic patients. Recently, new molecular tools have emerged to complement the conventional culture-based diagnostic methods. In this study, we used spiked whole blood samples to evaluate together two ready-to-use molecular solutio...