This paper evaluates the effects of microbiologically influenced corrosion (MIC) on fatigue-crack growth of candidate materials useful in expanding bio-ethanol usage, including a storage-tank steel (ASTM A36) and two pipeline steels (API 5L X52 and X70). The microbiological species sampled and cultivated from an ethanol fuel production stream are responsible for both acetic acid and hydrogen su...

A 44-year-old man was referred to our hospital because of a positive fecal occult blood test. A barium enema study revealed numerous oval-shaped, elevated lesions with smooth surfaces in the region including the ascending colon. He was admitted to our hospital for investigation and therapy. Based on colonoscopic examination, we diagnosed him as having pneumatosis cytoides intestinalis (PCI). He...

This paper studies wavelength assignment algorithms on WDM all-optical trees of rings under different models: static, incremental and dynamic. It is shown that 5L/2 is the tight bound of the number of required wavelengths for static trees of rings with load L. This paper also proposes an O[log2(t+1)]-approximation and a  ∑ = ∈ h i R r r V i 1 | ) ( | log max   +h-approximation algorithm for ...

Several reports have been published on electron microscopic study of the parathyroid glands. Trier 1l described the fine structure of the parathyroid gland of the macaque monkey, Lever 2l 3l and Davis and Enders 'l made electron microscopic studies of the rat parathyroid under both normal and experimentally stimulated conditions, while Lange 5l and Holzmann and Lange 61 examined human parathyro...

Using the formalism of flag algebras, we prove that the maximal number of copies of C5 in a triangle-free graph with 5l + a vertices (0 ≤ a ≤ 4) is l(l + 1)a, and we show that the set of extremal graphs for this problem consists precisely of almost balanced blow-ups of a single pentagon. This settles a conjecture made by Erdős in 1984. For the transition from an asymptotic version of our result...

We report on EVN imaging of the 6.7 GHz methanol maser emission from the candidate high-mass protostar G23.657-0.127. The masers originate in a nearly circular ring of 127 mas radius and 12 mas width. The ring structure points at a central exciting object which characteristics are typical for a young massive star; its bolometric luminosity is estimated to be ≤ 3.2 × 104L⊙ and ≤ 1.2 × 10 5L⊙ for...

In previous reports concerning central nervous activities of toad's slow motor system2l 3l, the brain-stem reticular formation was recognized as a center for the vestibular reflex, of which sustained activities are necessary for main· taining tonic functions of slow muscles. The author's recent studies4l 5l have also suggested that the fast and slow motoneurons in the spinal ventral horn may be...