We compared a direct fluorescent-antibody stain (DFA) and an enzyme immunoassay (EIA) with a standard cell culture technique for the detection of Chlamydia trachomatis infection in women in an urban family practice setting. We also evaluated a DFA sample in a commercial laboratory to determine the interlaboratory reliability of this test. There were 268 women in the study; the EIA provided a hi...

We compared the ability of direct immunofluorescent staining (DFA) and the PCR to detect Treponema pallidum in specimens from patients with genital ulcer disease. Touch preparations from 156 patients with genital lesions were fixed in acetone and stained with a fluorescein-labeled monoclonal antibody specific for the 37-kDa antigen of T. pallidum. After microscopic examination, the smear was re...

We introduce the notion of amplified side-channel attacks, i.e. the application of block cipher cryptanalysis techniques to amplify effects exploitable by side-channel attacks. Such an approach is advantageous since it fully exploits the special characteristics of each technique in situations where each thrives the most. As an example, we consider the integration of block cipher cryptanalysis t...

Four methods of detecting respiratory syncytial virus (RSV) from clinical specimens were evaluated. A total of 410 specimens consisting of nasopharyngeal washes, aspirates, and swabs were simultaneously tested for the presence of RSV by direct immunofluorescence assay (DFA), enzyme immunoassay (EIA) (Kallestad Pathfinder), shell vial centrifugation culture (SVC), and conventional culture. DFA i...

Alzheimer’s disease (AD) is one of the most prominent neurodegenerative disorders. The aim of this research work is to study the magnetoencephalogram (MEG) background activity in AD patients using two scaling analysis methods: detrended fluctuation analysis (DFA) and backward detrended moving average (BDMA). Both measures have been designed to quantify correlations in noisy and non-stationary s...

In computer vision technology, image segmentation is a significant technological advancement for the current problems of high-speed railroad scene changes, low accuracy, and serious information loss. We propose algorithm, DFA-UNet, based on an improved U-Net network architecture. The model uses same encoder–decoder structure as U-Net. To be able to extract features efficiently further integrate...

The most common anatomical variation of the superficial femoral artery (SFA) is hypoplasia or aplasia associated with a persistent sciatic artery. We report a case exhibiting SFA hypoplasia combined with connection of the deep femoral artery (DFA) to the popliteal artery (in other words, the DFA became the popliteal artery). A 41-year-old man was admitted with a crush injury of the left foot. C...

A bacterial strain, GS-9, isolated from soil as a levan-degrading microorganism produced an extracellular enzyme that converted levan into DFA IV. This strain was identified as Arthrobacter nicotinovorvans. The DFA IV-producing enzyme was specifically induced by levan. The enzyme was purified 60-fold from culture supernatant to give a single band on SDS-PAGE. The molecular weight of this enzyme...

Statistics of the Hurst scaling exponents calculated with the use of two methods: recently introduced Detrended Moving Average Analysis(DMA) and Detrended Fluctuation Analysis (DFA)are compared. Analysis is done for artificial stochastic Brownian time series of various length and reveals interesting statistical relationships between two methods. Good agreement between DFA and DMA techniques is ...