and then showing that bn/an converges to ζ(3) fast enough to ensure irrationality of ζ(3) (see [5]). Another remarkable discovery of Apéry is that an and bn satisfy the recursive relation (n+2)un+2− (34n+153n+231n+117)un+1+(n+1)un = 0 (un = an or bn). Thus, if we set A(t) = ∑∞ n=0 ant n and B(t) = ∑∞ n=0 bnt , then the functions A(t) and B(t) satisfy the differential equations (1) (1− 34t+ t)θA...

Endospore-forming strains were isolated from corn-compost treated with olive-mill wastewater ('alpechin'). The strains were taxonomically studied and proposed as a novel Paenibacillus species. These organisms (strains B.3T, B.7 and B.9) were particularly distinguishable from other aerobic spore-forming species by their ability to grow optimally in 100% (v/v) olive-mill wastewater at 30 degrees ...

Obstructive hydrocephalus caused by tectal glioma, which relived by neuroendoscopy, have been described using 3.0 Tesla magnetic resonance imaging (3T MRI) so far, we present the results obtained from 3T and 7T MRI in this patient. A 21-year-old woman presented at our hospital with gait disturbance, hormonal insufficiency, and urinary incontinence that began prior to 6 years of age. 3.0T MRI re...

PURPOSE Magnetic resonance imaging (MRI) is the investigation of choice for detecting structural lesions that underlie and may accompany epilepsy. Despite advances in imaging technology, 20-30% of patients with refractory focal epilepsy have normal MRI scans. We evaluated the role of repeated imaging with improved MRI technology - an increase in field strength from 1.5T to 3T and superior head ...

The choice of receiver coils used in high-field CMR, such as at 3T, is critical. Because of reduced RF penetration, a broader surface area is required. Too large an area requires imaging with a large FOV, which increases scan-time. This can often be reduced with parallel reconstruction techniques, or k-t space techniques (if the additional FOV is relatively stationary). A simple solution is to ...

INTRODUCTION This is the first study to assess cerebral microinfarcts (CMIs) on 3 tesla (3T) magnetic resonance imaging (MRI) in a memory clinic population. METHODS We included 238 consecutive patients (aged 72.5 ± 9.1 years) from a memory clinic in Singapore. All patients underwent extensive neurological and neuropsychological testing and 3T MRI on the same day. Cortical CMI rating criteria ...

Introduction 7T ToF-MRA has proven to depict the major intracranial arteries in humans with a quality comparable or better than 3T or 1.5T magnets [1]. Ultrahigh field ToF-MRA has also allowed for the visualization of a larger number of the small intracranial arteries that were either not visualized or seen less clearly with lower field strength magnets [2]. The purpose of this study was to eva...

BACKGROUND AND PURPOSE Flexible microstents, such as the closed-cell EN, have facilitated adjunctive coiling of intracranial aneurysms. Little data are available on the ability of the stent struts to maintain vessel-wall apposition once deployed in the tortuous cerebral vasculature and the prevalence of ISA. The purpose of this study was to evaluate the relationship between geometric features o...