Based upon the statistical distribution of flexural fatigue life data and flexural fatigue strength of the steel fibre reinforced concrete (SFRC) containing blends of limestone powder (LP) and silica fume (SF), the influence of these inserts on the flexural fatigue performance of concretes is probed. Concrete mixes were proportioned to replace 30% cement with these mineral inserts in different ...

Fatigue is a common and disabling symptom in Multiple Sclerosis (MS). However, consistent neuroimaging correlates of its severity are not fully elucidated. In this article, we study the neuronal correlates of fatigue severity in MS. Forty-three Relapsing Remitting MS (RRMS) patients with MS-related fatigue (Fatigue Severity Scale (FSS) range: 1-7) and Expanded Disability Status Scale (EDSS) ≤ 4...

In order to successfully implement reliable Flip Chip packaging technology, it is desirable to ensure solder fatigue as the limiting mechanical failure mechanism. Doing so enables the packaging engineer to design to specific reliability standards, as solder fatigue is a known and predictable failure mechanism. Indeed, other Flip Chip failure modes such as silicon fracture and underfill delamina...

In recent years many experimental and numerical studies have been conducted on the fatigue behaviour of CNG storage pressure vessels. The main objective of these studies is to estimate the total fatigue life, which consists of two parts: i) Life till crack nucleation and ii) Crack growth life. Although fatigue evaluation methods for metal cylinders are widely covered in literature including the...

The fatigue behavior of both bare and polymer coated silica optical fiber has been determined in various buffered pH solutions. Bare and polymer coated fibers were studied to distinguish any coating effects. Numerical integration techniques were utilized to fit the data to three kinetics models, and the fatigue parameters were calculated together with their corresponding confidence ellipses. Th...

The research was designed to examine the relationship between the development of muscle fatigue and the effect it has on sport performance, specifically during maximal voluntary contraction. This kind of this investigation using simultaneous electrophysiological and mechanical recordings, based on advanced mathematical processing, allows us to get parameters, and indexes in a short time, and fi...

PURPOSE/OBJECTIVES To evaluate the changes in reports of fatigue, sleep disturbances, and depressive symptoms and serum cortisol, melatonin, serotonin, and bilirubin during adjuvant chemotherapy in women with breast cancer and to determine whether any correlations exist between the symptom parameters and biomarkers. DESIGN Prospective longitudinal, correlational, repeated-measures pilot study...

PURPOSE The aim of this study was to test the hypotheses that prolonged mental exertion (i) reduces maximal muscle activation and (ii) increases the extent of central fatigue induced by subsequent endurance exercise. METHODS The neuromuscular function of the knee extensor muscles was assessed in 10 male subjects in two different conditions: (i) before and after prolonged mental exertion leadi...