Two major functions of the visual system are discussed and contrasted. One function of vision is the creation of an internal model or percept of the external world. Most research in object perception has concentrated on this aspect of vision. Vision also guides the control of object-directed action. In the latter case, vision directs our actions with respect to the world by transforming visual ...

We report physical phenomena occurring in a vertical Newton's cradle system. A dozen of metallic spheres are placed in a vertical tube. Therefore, the gravity induces a non-uniform pre-compression of the beads and a restoring force. An electromagnetic hammer hits the bottom bead at frequencies tuned between 1 and 14Hz. The motion of the beads are recorded using a high-speed camera. For low freq...

background: recent studies have shown that physical activity is an effective factor in improving sleep quality. therefore, this study aimed to compare the sleep quality of athlete and non-athlete pregnant women. methods: this cross-sectional descriptive analytical study was performed on 300 pregnant women in the last trimester of pregnancy, referred to prenatal care unit of amiralmomenin hospit...

Background: Occupational physical activity (OPA) is prevalent in the general population. However, its influence on the health status of manual workers is unclear. This study examined the impact of OPA on the health-related quality of life (HRQoL) of vocational-skilled workers (VSWs) in Nigeria.  Materials and Methods: This cross-sectional study was conducted on 354 male VSWs from six cities in...

Present research was conducted with the aim of determination of significant effect of soil properties on natural regeneration of Haloxylon aphyllum and correlation coefficient and linear relation between soil variables and natural regeneration of Haloxylon aphyllum. Firstly, geomorphologic units were prepared in the areas under cultivation of Haloxylon aphyllum in Ardestan. Two cultivated lands...

Granuloma annulare is one of the granulomatous dermatoses, the localized form of which is the most common clinical type, although rare variants such as subcutaneous form have been reported.We present a 22-year-old girl with asymptomatic cutaneous lesions on her fingers from 14 years ago.On physical examination, multiple nodules with rubbery consistenc...

      An oral suspension could a suitable dosage form for the geriatric patients. The calcium alginate coated ion exchange resinate of propranolol hydrochloride were prepared using Amberlite IR-120 by solvent evaporation. Microcapsules of propranolol hydrochloride resinate were prepared by solvent evaporation technique,the suspensions were prepared by using deionised water as the vehicle. Methy...