We aimed to evaluate the usefulness of incorporating the result from an IFN-gamma release assay (IGRA) in the algorithm for initial diagnosis of tuberculosis (TB) in prospectively enrolled HIV-infected subjects. Ninety HIV-infected subjects with clinical and/or radiological features consistent with a possible diagnosis of active-TB were tested with QuantiFERON®-TB Gold InTube (QFT) and T-SPOT.T...

Gravitational decoherence (GD) refers to the effects of gravity in actuating classical appearance a quantum system. Because underlying processes involve issues general relativity (GR), field theory (QFT), and information, GD has fundamental theoretical significance. There is great variety models, many them involving physics that diverge from GR and/or QFT. This overview two specific goals along...

The work presented expands upon previous research into the uses of fuzzy gain scheduling (FGS). It combines FGS with the robust control design methodology, quantitative feedback theory (QFT). By combining FGS and QFT the advantages from both methodologies are achieved, namely the resulting controller synthesis methodology provides design transparency, because of QFT, and does not suffer from ov...

While Quantum phase estimation (QPE) is at the core of many quantum algorithms known to date, its physical implementation (algorithms based on quantum Fourier transform (QFT) ) is highly constrained by the requirement of high-precision controlled phase shift operators, which remain difficult to realize. In this paper, we introduce an alternative approach to approximately implement QPE with arbi...

In this paper a non-diagonal regulator, based on the QFT method, is synthesized for an uncertain MIMO plant whose output and control signals are subjected to hard time-domain constraints. This procedure includes the design of a non-diagonal pre-controller based on a new simple approach, followed by the sequential design of a diagonal QFT controller. We present a new formulation for the latter s...

OBJECTIVE In vitro interferon-gamma (IFN-gamma) assays have emerged as novel alternatives to the tuberculin skin test (TST) for the diagnosis of latent tuberculosis (TB) infection. These assays have been evaluated in low incidence countries, mainly in adults, and have been shown to be more specific than TST. Because few studies have been done in high incidence countries, and because paediatric ...

BACKGROUND The present study was designed to investigate the utility of Quantiferon TB gold (QFT-G) and Tuberculin skin test (TST) for diagnosis of latent TB infection (LTBI) in high crowding TB endemic zone of Nagpur, India and their comparison with associated risk factors. METHODS Out of 342 eligible participants, QFT-G and TST were performed in 162 participants. RESULTS The prevalence of...

The standard model embodies our current knowledge of elementary particle physics and represents a welltested framework for the study of non-gravitational phenomena at low energies. It is built on the foundations of relativistic quantum field theory (QFT), which provides the correct description of electroweak and strong interactions involving leptons and quarks. It is generally believed that, ex...