1 Introduction The trapped electron mode (TEM) is generally unstable in tokamaks for short poloidal wavelengths, k θ ρ i ~ 1, where k θ is the poloidal wavenumber and ρ i is the ion Larmor radius. Trapped electrons exist at lower collisionalities, ν* = ν eff /ω be < 1, where ν eff = ν e /ε with ν e the electron collision frequency and ε = r/R is the inverse aspect ratio, where r and R are the m...

Unstable angina has only been recognized as a distinct entity for about 50 years. The term is used to describe a symptom complex that is neither stable angina pectoris nor acute myocardial infarction. There are a number of other terms used to describe essentially the same symptom complex; these include pre-infarction angina, crescendo angina, intermediate coronary syndrome and threatening infar...

Three copper(ii) complexes with bidentate ligands L(1), L(2) and L(3) [L(1), N,N(/)-dimethylethylenediamine; L(2), N,N(/)-diethylethylenediamine and L(3), N,N(/)-diisobutylethylenediamine], respectively, were synthesized as their perchlorate salts. The single crystal structures for all the complexes were determined. The nitric oxide reactivity of the complexes was studied in acetonitrile solven...

Fixing an arbitrary point p ∈ CP and a triple (g, d, `) of nonnegative integers satisfying the inequality g ≤ (d+l−1 2 ) − (l 2 ) , we associate a natural Hurwitz number to the (open) Severi-type varietyWg,d,` consisting of all reduced irreducibke plane curves of degree d + l with genus g and having an ordinary singularity of order l at p (the remaining singular points of such curves being usua...

In freshly harvested Aspergillus terreus cultures grown for the production of lovastatin (formerly called mevinolin), no monacolin L could be detected. However, during the isolation of lovastatin, significant quantities of monacolin L appeared. It has been discovered that a new metabolite structurally related to the members of the monacolin series is present. This metabolite is unstable and und...

In this radioimmunoassay for human retinol-binding protein (RBP), sample (serum, diluted as much as 3600-fold; or urine, diluted or undiluted) or calibrant (purified RBP in phosphate buffer containing bovine serum albumin) is incubated with 125I-labeled RBP and rabbit anti-human RBP antiserum for 24 h before separation with second antibody/polyethylene glycol. The assay's sensitivity is 5 micro...