Through a house-to-house survey, 1325 people aged 11+ years registered at 2 primary health care centres (1 at high altitude and 1 at sea level) in Asir region, Saudi Arabia, were interviewed and examined for weight, height and peak expiratory flow rate. The prevalence of bronchial asthma at sea level (19.5%) was significantly higher than at high altitude (6.9%). Illiteracy, low income, use of c...

it is a very short time that the quaternaries period in geology and physical geography's knowledge has occupied a very important place. during this period, the earth has suffered consecutive freezing that has been accompanied by tides and alternate erosion and sedimentation. sedimentary successions have recorded valuable evidence of changes with very accurate details. the study of these sedimen...

the district of miyān kūh in the ardal town,chahār mahāl bakhtiari province, because of its high mountains, deep valleys and the fields among small mounts, being placed in the path of the was dering tribes has been the focus of the attention. the rigion has two different viewpoint. one part featuring the mounts chēhēl cheshme and gereh with the altitude of more than 3500 m., has cold winter and...

In the present study, the Tangrah region located in the vicinity of GolestanNational Park was selected for exploring the changes in the amount of the secondaryessential of hypericin in Hypericum perforatum in different highlands of the easternGolestan province. The aerial flowered parts of the herb were collected randomly and inthree replications from four altitudes of 300 m, 600 m, 900 m, and ...

like the adjacent areas including savojbolagh and tehran plain etc, taleghan is one of the regions susceptible to form iron age settlements at northern central part of iranian plateau. during an archaeological survey in this region in 2001, 19 zones were attributed to iron age region so that due to study on the findings resulting from this survey again, only ten of them included characteristic ...

There are recent observational indications (lack of convergent electric ®eld signatures above the auroral oval at 4 RE altitude) that the U-shaped potential drop model for auroral acceleration is not applicable in all cases. There is nevertheless much observational evidence favouring the U-shaped model at low altitudes, i.e., in the acceleration region and below. To resolve the puzzle we propos...

The response to treadmill exercise of the left ventricle of natives of the region of Morococha, Peru (elevation 14,900 feet), and of natives of the region of Lima, Peru (elevation 500 feet), was studied at the elevation where they had always lived. In both groups the external work of the left ventricle was effected by a combination of a large increase in cardiac output and a mild increase in sy...

Introduction The number of people travelling to high altitude regions, especially in South America, Nepal and India, has risen enormously in the past 10 years. Alongside this increasing popularity of altitude trekking there has been an increase in the number of service expeditions. In October 2000, a Joint Service Expedition spent a month in Nepal attempting to scale Lobuche East, one of the tr...