OBJECTIVES To determine the sensitivity and specificity of a nephelometric beta-trace protein assay for the diagnosis of liquorrhoea. METHODS One hundred and forty clinical samples with suspected liquorrhoea were analysed by a newly developed nephelometric assay. An established electroimmunoassay served as a reference method. The sensitivity and specificity of the beta-trace nephelometric ass...

This study investigates the role of 3.0T R2* imaging for measuring cardiac iron overload. Experiments were conducted on calibrated phantoms and sickle cell disease (SCD) patients. R2* imaging at 3.0T enabled assessment of wide range of iron concentrations. R2* values at 3.0T were about double of those at 1.5T. Myocardial R2* showed weak and strong correlations with hepatic R2* and serum ferriti...

Proposition 1.1. Let f : R1 → R2 be a homomorphism of rings. If J is an ideal of R2, then f (J) is an ideal of R1 containing ker(f) and furthermore f(f(J)) ⊆ J . Now let f : R1 → R2 be an epimorphism of rings. If J is an ideal of R2 then f(f (J)) = J . If I is an ideal of R1 then f(I) is an ideal of R2. Furthermore we have I ⊆ f (f(I)) = I + ker(f) and thus I = f(f(I)) if I contains ker(f). Thu...

R(2) effect-size measures are presented to assess variance accounted for in mediation models. The measures offer a means to evaluate both component paths and the overall mediated effect in mediation models. Statistical simulation results indicate acceptable bias across varying parameter and sample-size combinations. The measures are applied to a real-world example using data from a team-based h...

In this paper we study the last round of the discrete Voronoi game in R, a problem which is also of independent interest in competitive facility location. The game consists of two players P1 and P2, and a finite set U of users in the plane. The players have already placed two disjoint sets of facilities F and S, respectively in the plane. The game begins with P1 placing a new facility followed ...

i=1 H(ri); (5) HΨ(r1, r2, · · · ) = EΨ(r1, r2, · · · ). (6) (Note: For simplicity, unless necessary, we often write r as r.) Since there is no interaction between particles, the Schrodinger equation is separable. Assume Ψ(r1, r2, · · · , rN ) = φ(r1)φ(r2) · · ·φ(rN ), (7) then Hφαi(ri) = εαiφαi(ri), i = 1, 2, · · ·N. (8) Manybody eigenstate is a product of 1-particle states, Ψα1,α2,···(r1, r2, ...

Bone marrow, spleen, liver and kidney proton transverse relaxation rates (R2), together with cardiac R2* from patients with sickle cell disease (SCD), paroxysmal nocturnal hemoglobinuria (PNH) and non-transfusion dependent thalassemia (NTDT) have been compared with a control group. Increased liver and bone marrow R2 values for the three groups of patients in comparison with the controls have be...

Introduction: Transverse relaxation rates, R2 and R2* and the apparent diffusion coefficient (ADC) are all typically estimated from the exponential decay of MR signal magnitude as a function of either echo time (for R2 and R2*) or b-value (for ADC). Changes in R2 and R2* induced by ultrasmall paramagnetic iron oxide (USPIO) contrast agents, along with ADC, have recently been utilised to estimat...

R2 elements are non-long-terminal-repeat (non-LTR) retrotransposons that insert specifically in the 28S rRNA genes of many insects. Previous reports concerning this element in the genus Drosophila have suggested that R2 elements are absent from many species of this genus, particularly those species from the subgenus Drosophila. In this report, we present an extensive study of the distribution a...

Accurate R2* measurements are critical for many abdominal imaging applications. Conventionally, R2* maps are derived via the monoexponential fitting of signal decay within a series of gradient-echo (GRE) images reconstructed from multichannel datasets combined using a root sum-of-squares (RSS) approach. However, the noise bias at low-SNR TEs from RSS-reconstructed data often causes the underest...