The rockfall process is characterized by bounces of a block on the ground. coefficient restitution (COR), which indicates degree energy dissipation, has significant effect trajectory. 3-dimensional Distinct Element Code (3DEC) an effective tool to study trajectory, and damping can reflect COR in numerical modeling. However, relationship between not understood. A field test numerically modelled ...

In Hilbert space L2(Rn), we prove the equivalence between the mod-ulus of smoothness and the K-functionals constructed by the Sobolev space cor-responding to the Fourier transform. For this purpose, Using a spherical meanoperator.

We study the growth of rare gases (Rg) Ne, Ar and Kr on coronene (Cor) molecules, Cor-(Rg) $$_N$$ . The is taken up to sizes N=60, we show global energy minima for those clusters. Improved Lennard-Jones atom-bond potentials are used represent Rg-Rg Rg-Cor interactions, respectively. Basin-Hopping (BH) optimization technique employed locate putative minimum structures. Results presented Cor-(Ne)...

background: there are many physiological and psychological factors, which affect sensitivity to pain in children afflicted with all. the main purpose of this study was to evaluate the relation between salivary cortisol and sensitivity to pain, and also study the role of age and gender. methods: seventy eight children (33 girls and 45 boys, aged 3 to 12 years) with all participated in this study...

An Optical Projection Tomography (OPT) system was developed and optimized to image 3D tissue engineered products based in hydrogels. We develop pre-reconstruction algorithms to get the best result from the reconstruction procedure, which include correction of the illumination and determination of sample center of rotation (CoR). Existing methods for CoR determination based on the detection of t...

A comparative study was made of the resting cardiac index in 12 cases of chronic cor pulmonale, in 14 normal subjects, and in 10 patients suffering from heart failure due to vascular or valvular disease. The mean cardiac index in the subjects with chronic cor pulmonale was significantly higher than in the group with other types of heart disease and was significantly lower than in the normal ind...

Cor triatriatum presenting in adulthood is extremely rare. We describe a case of adult cor triatriatum in which the diagnosis was initially masked by the concomitant existence of COPD. Cardiac catheterization revealed only slightly elevated pulmonary wedge pressure despite severe pulmonary arterial hypertension. Both the primary lung disease and cor triatriatum greatly accentuated the pulmonary...

Hypoxia and endothelial dysfunction play a central role in the development of pulmonary hypertension. Cor pulmonale is a maladaptive response to pulmonary hypertension. The presence of peripheral edema in cor pulmonale is almost invariably associated with hypercapnia. Correction of abnormalities of gas exchange and ventilation can ameliorate pulmonary hypertension and improve survival. This rev...

Training the bench press exercise on a traditional flat bench does not induce a level of instability as seen in sport movements and activities of daily living. Twenty participants were recruited to test two forms of instability: using one dumbbell rather than two and lifting on the COR bench compared to a flat bench. Electromyography (EMG) amplitudes of the pectoralis major, middle trapezius, e...