For many low-altitude (<1500 m) residents, their travel itineraries may cause them to ascend rapidly to high (>2400 m) altitudes without having the time to develop an adequate degree of altitude acclimatization. Prior to departing on these trips, low-altitude residents can induce some degree of altitude acclimatization by ascending to moderate (>1500 m) or high altitudes during either continuou...

Pre-acclimatization at a convenient high-altitude location may represent an appropriate method before climbing a more hostile target mountain. The aim of the present field report was to demonstrate the effectiveness of such pre-acclimatizing applying the ‘‘climb high sleep low’’ maxim for a subsequent rapid ascent to almost 7000 m. After some pre-acclimatization in the Alps the authors flew to ...

East Asia (including Southeast and Northeast Asia) has witnessed the most spectacular pacification in the world during the past 30 years. Certain dimensions related to human security have been perceived as weak points in the long peace of East Asia. Despite progress, authoritarian violence is still a reality in East Asia. At the same time, certain other dimensions of human security—most distinc...

Hiking and climbing in high mountains are becoming very popular during the last decade. High mountain climbing is mainly in the domain of skilled alpinists. On the other hand hiking is often organized by trekking agencies which took unskilled clients to very high mountains. The aim of the presents study is to emphasis the importance of the process of acclimatization to high altitude. Two studen...

The different types of response mechanisms that the organism uses when exposed to hypoxia include accommodation, acclimatization and adaptation. Accommodation is the initial response to acute exposure to high altitude hypoxia and is characterized by an increase in ventilation and heart rate. Acclimatization is observed in individuals temporarily exposed to high altitude, and to some extent, it ...

Aloe plants can be grown autotrophically in a maintenance-free, sterile, ex vitro environment. Excel, 15-5-15 plus minors fertilizer formulation and Plant Preservative Medium (PPM) biocide was used as a very economical basal medium. In vitro micropropagated plantlets were regenerated in Excel media with 2 g /L sucrose and 2.2 μM 6-Benzylamino purine (BA) and used to initiate ex vitro cultures i...

Micropropagated plants are usually cultured in in vitro environments, with a high relative humidity and low light intensity, taking nutrients and energy from the culture medium. During acclimatization, physiological and structural changes allow micropropagated plants to adapt to the new environmental conditions, mainly to low relative humidity and high light intensity. As a result, plants becom...

ABSTRACT: Couroupita guianensis Aubl. is an Amazonian forest species with important medicinal and ornamental value. This study evaluated the effect of different culture media light spectra on in vitro germination development zygotic embryos C. guianensis. The media, MS WPM, were without addition plant growth regulators associated four LED spectra: white (CW), 70% red + 30% blue (R2B), 100% (R),...

background adaptation is an important process for humans. children, who are physically or mentally disabled, impose special stresses on their families, parents and in particular on their mothers. objectives this study examines the relationship between the characteristics of mothers who have educable mentally retarded children, and their adaptation based on roy’s adaptation model. patients and m...