Academic literature on the topic 'Altitude, Influence of'

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Journal articles on the topic "Altitude, Influence of":

1

de Aquino Lemos, Valdir, Ronaldo Vagner Thomatieli dos Santos, Fabio Santos Lira, Bruno Rodrigues, Sergio Tufik, and Marco Tulio de Mello. "Can High Altitude Influence Cytokines and Sleep?" Mediators of Inflammation 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/279365.

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The number of persons who relocate to regions of high altitude for work, pleasure, sport, or residence increases every year. It is known that the reduced supply of oxygen (O2) induced by acute or chronic increases in altitude stimulates the body to adapt to new metabolic challenges imposed by hypoxia. Sleep can suffer partial fragmentation because of the exposure to high altitudes, and these changes have been described as one of the responsible factors for the many consequences at high altitudes. We conducted a review of the literature during the period from 1987 to 2012. This work explored the relationships among inflammation, hypoxia and sleep in the period of adaptation and examined a novel mechanism that might explain the harmful effects of altitude on sleep, involving increased Interleukin-1 beta (IL-1β), Interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α) production from several tissues and cells, such as leukocytes and cells from skeletal muscle and brain.
2

Tang, Yan Fei, Chao Ding, Ya Ping He, De Chuang Zhou, and Jian Wang. "Studies on the Effect of Altitude on the Flammable Liquids' Flash Point." Advanced Materials Research 908 (March 2014): 345–48. http://dx.doi.org/10.4028/www.scientific.net/amr.908.345.

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Presented in this paper is part of an experimental series conducted at different altitudes to investigate the influence of altitude on the flammable liquids flash point. The BS-1 closed bomb apparatus is used to measure the flash points of two flammable liquids (dimethylacetylamide (DMA) and RP-5 Jet A) in a hypobaric chamber under the altitude change from 4860 km to the sea level. The experimental results show that the flash points of DMA and Jet A decrease linearly with the increase in altitude in the low altitude region below the corresponding critical altitudes but non-linearly above. The critical altitudes for DMA and RP-5 Jet A are found to be 3 km and 3.83 km respectively. When the altitude reaches or surpasses the critical altitude, the flash point decreases rapidly. In particular, the flash point of the DMA exhibits a peculiar sudden transition above the critical altitude.
3

PUTRA, HIRMAS FUADY, DHENOK SEKAR AMBARWATI, NURRIZKI MUBYRASIH, and TERSI ALESTI. "Karakteristik Fisiologis Lumut pada Beberapa Ketinggian di Kawasan Gunung Tangkuban Perahu." Jurnal Sumberdaya Hayati 1, no. 2 (May 4, 2016): 60–63. http://dx.doi.org/10.29244/jsdh.1.2.60-63.

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Environmental factors greatly influence the physiological state of moss. Some of the environmental factors that influence the physiological of moss are air temperature, humidity, and light intensity. These three environmental factors will vary at each altitude. This study aims to determine the physiological characteristics of mosses on some altitudes in the area of Mount Tangkuban Perahu (Ratu Crater – Domas Crater track). The method that are used is to measure air temperature, humidity, and light intensity at some altitudes. Subsequently, samples were taken at each altitude, to measured chlorophyll and proline content. Mosses that are used as samples; Campylopus sp., Plagiochila sp., Dicranella sp. The results indicate that the chlorophyll content significantly different at some altitude, with an increasing trend as the decrease altitude. The highest chlorophyll content in Campylopus sp. at altitude of 1,621 meters above sea level, while the lowest chlorophyll content in Plagiochila sp. at altitude of 1,721 meters above sea level. The content of proline did not differ significantly at some altitude, and tend to be more affected by air conditions that correlate with distance of moss habitat with the active crater of Domas, which allegedly can cause physiological stress in the moss.
4

Spring, Allison M., Kenneth D. Domingue, Thomas V. Kerber, Margaret M. Mooney, Rebecca L. Hale, Kristina M. Lemmer, and Kathryn M. Docherty. "Land Use Effects on Airborne Bacterial Communities Are Evident in Both Near-Surface and Higher-Altitude Air." Diversity 13, no. 2 (February 18, 2021): 85. http://dx.doi.org/10.3390/d13020085.

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Land use influences the composition of near-surface airborne bacterial communities, and bacteria can be transported through the atmosphere at global scales. The atmosphere mixes vertically, but rigorously assessing whether the effects of land use on atmospheric communities extends to higher altitudes requires examining communities from multiple altitudes collected at a stable location and timeframe. In this study, we collected near-surface (<2 m) and higher-altitude (150 m) air samples from three sites in an agricultural/developed location and a forested/undeveloped location. We used bacterial 16S rRNA amplicon sequencing to compare communities and predict functionality by altitude. Higher-altitude and near-surface communities did not differ in composition within each location. Communities collected above the undeveloped location were equally variable at both altitudes; higher-altitude samples from the developed location predominantly contained Firmicutes and were less variable than near-surface samples. We also compared airborne taxa to those present in soil and snow. Communities from higher-altitude samples above the developed location contained fewer overlapping taxa with soil and snow sources, and overlapping Operational Taxonomic Units (OTUs) among the three sources differed by location. Our results suggest that land use affects the composition of both near-surface and higher-altitude airborne bacterial communities and, therefore, may influence broad bacterial dispersal patterns. This small-scale pilot study provides a framework for simultaneously examining local and regional airborne microbial communities that can be applied to larger studies or studies using different types of samplers.
5

Lei, Tian, Jinliang Xu, Xingli Jia, Leyu Wei, and Lin Tian. "Impact of High-Altitude on Truck’s Climbing Speed: Case study in Qinghai-Tibet Plateau Area in China." Journal of Advanced Transportation 2019 (August 20, 2019): 1–14. http://dx.doi.org/10.1155/2019/8560204.

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Truck’s climbing performance is an important consideration in traffic safety, efficiency, and highway geometric design. With the infrastructure development in high-altitude area in China, more attention needs to be paid on truck’s climbing performance in such area. In this article, truck’s climbing speed in high-altitude area was examined through field tests on different grade sections at different altitudes. Truck’s speed-distance curves were built at different altitudes and the impact of altitude on truck’s climbing speed was explored based on the test results. It was shown that, within the altitude range of 3000~5000m, altitude had an obvious influence on test truck’s decelerating and accelerating performance. Truck’s speed decreased faster on steep grades and increased slower on gentle grades with the increase of the altitude. Also, the stable speed that test truck could maintain on a certain grade was lower at a higher altitude. In addition, test truck’s theoretical speed-distance curves at the sea level were estimated through truck’s dynamic model. Compared with the theoretical crawl speed, a negative effect of altitude change (from 0 to the altitude above 3000 m) was found on truck’s climbing performance.
6

Hovenden, Mark J., and Tim Brodribb. "Altitude of origin influences stomatal conductance and therefore maximum assimilation rate in Southern Beech, Nothofagus cunninghamii." Functional Plant Biology 27, no. 5 (2000): 451. http://dx.doi.org/10.1071/pp99164.

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Gas exchange measurements were made on saplings of Southern Beech, Nothofagus cunninghamii (Hook.) Oerst. collected from three altitudes (350, 780 and 1100 m above sea level) and grown in a common glasshouse trial. Plants were grown from cuttings taken 2 years earlier from a number of plants at each altitude in Mt Field National Park, Tasmania. Stomatal density increased with increasing altitude of origin, and stomatal con-ductance and carbon assimilation rate were linearly related across all samples. The altitude of origin influenced thestomatal conductance and therefore carbon assimilation rate, with plants from 780 m having a greater photosynthetic rate than those from 350 m. The intercellular concentration of CO2 as a ratio of external CO2 concentration (ci/ca) was similar in all plants despite the large variation in maximum stomatal conductance. Carboxylation efficiency was greater in plants from 780 m than in plants from 350 m. Altitude of origin has a strong influence on the photo-synthetic performance of N. cunninghamii plants even when grown under controlled conditions, and this influence is expressed in both leaf biochemistry (carboxylation efficiency) and leaf morphology (stomatal density).
7

Tu, Ran, Yi Zeng, Jun Fang, and Yong-Ming Zhang. "Influence of high altitude on the burning behaviour of typical combustibles and the related responses of smoke detectors in compartments." Royal Society Open Science 5, no. 4 (April 2018): 180188. http://dx.doi.org/10.1098/rsos.180188.

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The effect of altitude on typical combustible burning and related smoke detector response signals was investigated by comparison experiments at altitudes of 40 m and 3650 m based on EN54 standard tests. Point-type light scattering photoelectric smoke detectors and ionization smoke detectors were used for four kinds of EN54 fire tests, including two kinds of smouldering fires with wood (test fire no. 2 in EN54 standard or TF2) and cotton (TF3), and two kinds of flaming fires with polyurethane (TF4) and n -heptane (TF5). First, the influence of altitude or ambient pressure on mass loss for smouldering combustion (TF2 or TF3) was insignificant, while a significant decrease in the mass burning rate was found for flaming tests (TF4 and TF5) as reported in our previous studies. Second, for photoelectric smoke detectors in flaming fire tests, the effect of altitude was similar to that of the burning rate, whereas for the ionization smoke detectors, the response signal at high altitudes was shown to be ‘enhanced’ by the detection principle of the ionization chamber, leading to an even larger value than at normal altitude for smouldering conditions. Third, to provide a reference for smoke detector design in high-altitude areas, the differences between signal speed in rising and peak values at two locations are discussed. Also, relationship between ion chamber signals and smoke optical densities are presented by utilization of an ionization smoke detector and smoke concentration meter. Moreover, a hierarchical diagram is illustrated to provide a better understanding of the effects of altitude on combustible burning behaviour and the mechanisms of detector response.
8

Wang, Shuling, Zhe Shao, and Jie Li. "THE INFLUENCE OF VARIATION IN ALTITUDE ON ATHLETIC PERFORMANCE IN LONG-DISTANCE RUNNERS." Revista Brasileira de Medicina do Esporte 28, no. 5 (October 2022): 584–86. http://dx.doi.org/10.1590/1517-8692202228052022_0101.

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ABSTRACT Introduction: The academic community has demonstrated the link of athletic performance in track and field with critical factors of sports training, including the psychology of competition. Recently, research has been verified that athletic performance is also related to altitude, weather, ambiance, and the timing of the competition. There are no studies to provide theoretical and practical training experience in the regional environment of Ganzhou. Objective: This paper analyzes the influence of altitude training in professional performance athletes. Concurrently, analysis of the physiological and biochemical indicators of the athletes is performed. Methods: Several long-distance runners had an 8-week altitude training. Analyzed the physiological and biochemical indicators of the athletes before and after the training. At the same time, perform mathematical-statistical analysis on the performance of long-distance runners before and after training. Results: After altitude training, hemoglobin and red blood cells showed a significant decrease (P<0.01). After training, athletes’ performance improved considerably (P<0.01). Conclusion: Training at different altitudes may promote an ascending curve in the athletes’ performance until a plateau in the fourth week of training. Evidence Level II; Therapeutic Studies - Investigating the result.
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Carvalho, Biange Maria Cezário de, Raquel Leite Wainfas, Tayanna Rodrigues, Lidiane Coelho Berbert, Thaiane Franklin, Ivyn Karla Lima de Sousa, and Ronaldo Figueiró. "Black fly (Diptera:Simuliidae) larvae body size variation along an altitude gradient in the Itatiaia National Park, Brazil." Revista Acta Ambiental Catarinense 13, no. 1 (August 24, 2016): 1. http://dx.doi.org/10.24021/raac.v13i1.3314.

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According to Bergmann’s Rule, individuals who inhabit higher altitudes tend to be larger in body mass or size, when compared with individuals of the same taxon who inhabit lower altitude places. Black flies are insects of great medical and veterinary importance due to its blood-sucking habit, becoming subject of studies regarding its bionomics, ecology and taxonomy. Studies approaching the influence of the altitude gradient in the morphology of Diptera: Simuliidae larvae are scarce in the literature, therefore, this study aimed to investigate the influence of altitude gradient in the morphology of Diptera: Simullidae larvae in Itatiaia National Park, RJ, and thus verify if Bergmann’s Rule is applicable to these organisms. Black fly larvae were sampled from four sites during periods of March and May 2013. From each site 30 larvae were measured, and these lengths were later compared between sites using Kruskal-Wallis, which showed a significant difference (P<.05) among sites from lower altitudes in relation to those of higher elevations, what was corroborated using a cluster analysis. The altitude was related to larval size using a linear regression, showing a positive correlation between these variables, thus corroborating Bergmann’s rule for Black flies.
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Yang, Xue, Long Di Cheng, Li Qian Huang, and Wen Hong Fan. "Study on the Correlation between the Property of Akund Fiber and its Growing Conditions." Advanced Materials Research 476-478 (February 2012): 1934–38. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.1934.

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In this paper ,the properties of akund fiber, growing at the altitudes of 813m, 1080m and 1153m from August to October were studied, respectively.The influences of altitude, month, fruit size and different parts of the fruit on the properties of akund fiber were also analyzed. It was found that the altitude and fruit size had a significant correlation coefficient with the property of akund fiber, while the influence of month on the property of akund fiber was not obvious. The properties of the fiber in different parts of the fruit were also different.The results will be beneficial to planting, harvesting, processing and exploiting this fiber.

Dissertations / Theses on the topic "Altitude, Influence of":

1

Croft, Quentin. "Human responses to simulated high altitude." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711614.

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Chambre, Muriel. "Altitude et coronaropathie : à propos de patients réadaptés en haute et moyenne altitude : étude ergonométrique et ventilatoire." Bordeaux 2, 1993. http://www.theses.fr/1993BOR2M138.

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Hinckson, Erica A. "Effect of simulated altitude exposure on sea level performance a thesis submitted to Auckland University of Technology in fulfilment of the degree of Doctor of Philosophy, July 2004." Full thesis. Abstract, 2004.

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Wood, Matthew R. "Effects of altitude exposure combined with sea level training on sea level performance a thesis submitted to Auckland University of Technology for the degree of Master of Health Science, Faculty of Health Sciences, September 2003." Full thesis. Abstract, 2003. http://puka2.aut.ac.nz/ait/theses/WoodM.pdf.

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Mason, Nicholas. "Mechanisms of altitude-related cough." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209711.

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The original work presented in this thesis investigates some of the mechanisms that may be responsible for the aetiology of altitude-related cough. Particular attention is paid to its relationship to the long recognised, but poorly understood, changes in lung volumes that occur on ascent to altitude. The literature relevant to this thesis is reviewed in Chapter 1.

Widespread reports have long existed of a debilitating cough affecting visitors to high altitude that can incapacitate the sufferer and, on occasions, be severe enough to cause rib fractures (22, 34, 35). The prevalence of cough at altitude has been estimated to be between 22 and 42% at between 4200 and 4900 m in the Everest region of Nepal (10, 29). Traditionally the cough was attributed to the inspiration of the cold, dry air characteristic of the high altitude environment (37) but no attempts were made to confirm this aetiology. In the first formal study of cough at high altitude, nocturnal cough frequency was found to increase with increasing altitude during a trek to Everest Base Camp (5300 m) and massively so in 3 climbers on whom recordings were made up to 7000 m on Everest (8). After 9 days at 5300 m the citric acid cough threshold, a measure of the sensitivity of the cough reflex arc, was significantly reduced compared with both sea level and arrival at 5300 m.

During Operation Everest II, a simulated climb of Mount Everest in a hypobaric chamber, the majority of the subjects were troubled above 7000 m by pain and dryness in the throat and an irritating cough despite the chamber being maintained at a relative humidity of between 72 and 82% and a temperature of 23ºC (18). This argued against the widely held view that altitude-related cough was due to the inspiration of cold, dry air.

In the next major hypobaric chamber study, Operation Everest III, nocturnal cough frequency and citric acid cough threshold were measured on the 8 subjects in the study. The chamber temperature was maintained between 18 and 24ºC and relative humidity between 30 and 60% (24). This work is presented in Chapter 2 and, demonstrated an increase in nocturnal cough frequency with increasing altitude which immediately returned to control values on descent to sea level. Citric acid cough threshold was reduced at 8000 m compared to both sea level and 5000 m values. Changes in citric acid cough threshold at lower altitudes may not have been detected because of the constraints on subject numbers in the chamber. The study still however demonstrated an increase in clinical cough and a reduction in the citric acid cough threshold at extreme altitude, despite controlled environmental conditions, and thus refuted the long held belief that altitude-related cough is solely due to the inspiration of cold, dry air.

If altitude-related cough is not simply due to the inspiration of cold, dry air, other possible aetiologies are:

•\
Doctorat en Sciences médicales
info:eu-repo/semantics/nonPublished

6

Reig, Thierry. "Polyglobulie d'adaptation à l'altitude." Bordeaux 2, 2000. http://www.theses.fr/2000BOR2P015.

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Pulfrey, Simon M. "Energy expenditure and requirement while climbing at extreme altitude." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23288.

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Humans can only survive the low barometric pressure of altitudes above 6000m by making a complex series of adaptations. The energetics of human survival at such extreme altitudes have not been widely studied. Objectives were to compare the doubly labelled water (DLW) and intake-balance (IB) methods to estimate daily energy expenditure while climbing between 6000 and 8046m and to investigate the putative metabolic cost involved with the process of acclimatization to extreme altitude. Reliability of the DLW method to provide an accurate and portable means to measure human energy expenditure depends upon a series of assumptions regarding the flux of tracer and tracee across the physiological compartments of measurement. Additional objectives were to review and examine the proficiency of these assumptions to account for perturbations experienced while using DLW while climbing at extreme altitude. Findings suggest that the use of DLW at extreme altitudes requires special consideration towards elevated rates of fractional isotope loss, inter-subject isotope transfer, alterations in total body water, changes in background isotopic abundance, and choice of sampling technique. Revised strategies directed at achieving these aims are calculated. Results from extreme altitude indicate that IB and DLW techniques each provide similar estimates of group mean energy expenditure despite substantial changes in body weight and composition and that the metabolic cost for the process of acclimatization accounts for roughly 12% of total daily energy expenditure. Problems associated with maintaining energy balance while climbing at extreme altitude are related to low energy intakes, approximately only 70% of energy demands, and energy expenditure values that are comparable to those of highly trained endurance athletes at sea-level.
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Robach, Paul. "Exercice supramaximal répété en hypoxie." Paris 5, 1998. http://www.theses.fr/1998PA05S034.

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Simmons, Grant H. 1981. "Cutaneous vasodilation at simulated high altitude: Impacts on human thermoregulation and vasoconstrictor function." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/9495.

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xvii, 174 p. : ill. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.
During acute altitude exposure, humans maintain higher skin temperature and lower core body temperature. However, the role of cutaneous vascular regulation in these thermoregulatory differences is unclear. Therefore, the purpose of these studies was to investigate the impact of altitude exposure on reflex control of skin blood flow and core temperature during cold exposure. In Chapter IV, the effects of hypoxia and hypocapnia on cutaneous vasoconstriction during mild cold exposure were investigated. We found that hypoxia stimulates cutaneous vasodilation in men whereas skin blood flow is unaltered in women. However, during whole body cooling skin blood flow is upward shifted in both sexes. The development of hypocapnia does not affect the vascular response to hypoxia in either sex, but reduces the magnitude of cutaneous vasoconstriction during cold exposure by 50% in women. In Chapter V, we studied the timecourse of α-adrenergic blockade by yohimbine in the cutaneous circulation and how the duration of cold exposure modulates cotransmitter-mediated vasoconstriction during cold stress. We found that yohimbine produces functional α-adrenergic blockade within 30 minutes of initial delivery and completely abolishes reflex cutaneous vasoconstriction during mild cold stress. This latter finding was surprising, and an additional protocol demonstrated that cotransmitter-mediated vasoconstriction only participates in the vascular response to cold stress when the exposure is more prolonged. In Chapter VI, the effects of hypoxia on cutaneous vasoconstrictor mechanisms and core cooling rate were tested during more prolonged and severe cold stress. In contrast to our findings during brief cold exposure, we showed that cutaneous vasoconstriction during prolonged cold stress is potentiated by hypoxia and abolishes hypoxic vasodilation. Moreover, increased cotransmitter-mediated vasoconstriction appears to account for this response. Hypoxia had no effect on core cooling rate during severe cold exposure. The selective potentiation of cotransmitter-mediated vasoconstriction observed during hypoxia in Chapter VI provided the basis for Chapter VII. This study was designed to test the effect of hypoxia on cutaneous vascular responsiveness to peripherally stimulated sympathetic vasoconstriction. The results demonstrated that α-adrenergic vasoconstrictor transduction is not affected by hypoxia, and that stimulation of adrenergic nerves with tyramine does not elicit cotransmitter-mediated vasoconstriction in skin.
Adviser: John R. Halliwill
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Martin, Régis. "Biodiversité génétique et structurelle chez Rana temporaria L. (Amphibia : Anura) : approche intégrative le long d'un gradient altitudinal." Chambéry, 2004. http://www.theses.fr/2004CHAMS001.

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Depuis le sommet de Rio 1992, conserver la biodiversité c'est intégrer la diversité biologique depuis le niveau du gène jusqu'à celui des écosystèmes. Si cette définition est largement répandue, elle est mal utilisée en conservation. Ainsi, la définition des unités de gestion (MUs) est à l'heure actuelle, essentiellement basé sur la diversité génétique moléculaire. Or, de nombreux exemples montrent que cette pratique est largement insuffisante. L'objet de ce travail est de caractériser à l'échelle locale la biodiversité intra-spécifique chez la grenouille rousse, Rana temporaria, les amphibiens représentant les vertébrés actuellement les plus menacés au monde. Nous avons comparé trois populations distribuées le long d'un gradient écologique fortement structurant, le gradient altitudinal (326m à 2450m). Sur le plan éco-éthnologique, avec l'augmentation de l'altitude, si la mobilité reste constante, les habitats d'hibernation et d'estivation diffèrent. Le site de reproduction, la forêt et les ruisseaux sont les habitats préférés. Cependant les animaux peuvent compenser la perte de l'habitat sylvicole. Sur le plan de la structuration spatiale et de la diversité génétique des populations, si en plaine : dans un paysage anthropisé, on observe par simulation sous SIG, une fragmentation des populations, elle n'est que faiblement révélée par l'étude du polymorphisme de marqueurs microsatellites. Paradoxalement, dans un paysage naturel montagnard, on observe un isolement génétique des populations par la distance. Sur le plan des stratégies de vies, une étude approfondie des traits d'histoire de vie montre l'existence d'une reproduction de type "explosive" en plaine et " long breeders" en montagne. La maturation sexuelle est déterminée génétiquement et la grenouille rousse développe des adaptations locales pour la vitesse de développement larvaire
Since Earth Conference (Rio 1992), to preserve biodiversity, it's necessary to work from gene levels to ecosystem one. Unfortunately, although a widespread knowledge, this definition was misused. At intra-specific level, Management Units of conservation (MUs) were usually only based on genetic diversity. Many examples have shown it's limitation. The aims of this work was to describe Rana temporaria intra-specific diversity along an altitudinal in northern Alps, because amphibians are the most endangered vertebrates over the world. Ln behavioural ecology, radiotracking study did not pointed out variation in mobility but in habitat preferences, especially to aestivate and to over winter. Forests were highly used but animaIs tan compensate its absence. At lowland in anthropogenic landscape, connectedness GIS simulation exhibited population fragmentation, unravelled by microsatellite analysis. On the opposite, in natural highland landscape, populations were isolated by distance. Ln life histories diversity, a detailed analysis of life-history traits pointed out at lowland an "explosive" reproductive strategy whereas at highland, a "long breeders" one. Sexual maturation was genetically based and common frog exhibit local adaptations in larval developmental rate

Books on the topic "Altitude, Influence of":

1

Alt, Alfons. Altitude. Marseille, France: Images en manoeuvre, 2007.

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Hultgren, Herbert N. High altitude medicine. Stanford, Calif: Hultgren Publications, 1997.

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Richalet, Jean Paul. Pathologie et altitude. Paris: Masson, 1991.

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Pān̐ḍe, Rāmakumāra. Altitude geography: Effects of altitude on the geography of Nepal. Lalitpur: Center for Altitude Geography, 1987.

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Ward, Michael P. High altitude medicine and physiology. London: Chapman and Hall Medical, 1989.

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Angelis-Harmening, Kristina. "--Cada uno tiene en la puna su gente": Intercambio y verticalidad en el siglo XVI en los yungas de La Paz. Markt Schwaben, Germany: A. Saurwein, 2000.

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Bigio, Dora Lerner de. Biomedicina andina: Compendio bibliográfico. Lima, Perú: IFEA, 1994.

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Houston, Charles S. High altitude: Illness and wellness. Merrillville, Ind: ICS Books, 1993.

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Bezruchka, Stephen. Altitude illness: Prevention & treatment : how to stay healthy at altitude-- from resort skiing to Himalayan climbing. Seattle, Wash: Mountaineers, 1994.

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Bouverot, Pierre. Adaptation to altitude-hypoxiain vertebrates. Berlin: Springer-Verlag, 1985.

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Book chapters on the topic "Altitude, Influence of":

1

Hurtado, Alberto. "The Influence of High Altitude on Physiology." In Ciba Foundation Symposium - High Altitude Physiology: Cardiac and Respiratory Aspects, 3–13. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470715383.ch2.

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Kukoba, Nikolay, Yulia Ivanova, and Irina Botvich. "The Influence of Altitudinal Zonality on Spectral Characteristics (MODIS/Terra) Mountain Forests of Western Sayan." In Climate Change Impacts on High-Altitude Ecosystems, 637–43. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-12859-7_26.

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Ruivo, C. R., J. J. Costa, and A. R. Figueiredo. "Influence of Altitude on the Behavior of Solid Desiccant Dehumidification System." In Desiccant-Assisted Cooling, 85–107. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5565-2_4.

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Liu, BoWei, Yi Jiang, Yang Song, and ShaoZhen Yu. "Numerical Simulation on the Influence of Altitude on Jet Flow Field." In Advances in Mechanical and Electronic Engineering, 349–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31507-7_57.

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Li, Jin, Enshen Long, Hanyu Yang, Min Wang, and Ziyun Wang. "Study on Influence of Altitude on Indoor Temperature Distribution of a Heating Room." In Environmental Science and Engineering, 1305–14. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-9520-8_134.

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Chen, Yongsheng, and Yongchang Luo. "The Influence of Transcranial Micro-electric Current Physiological Training on Cerebral Function Under Altitude Hypoxia." In Proceedings of the 14th International Conference on Man-Machine-Environment System Engineering, 329–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44067-4_40.

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Meister, L., Y. Burtschell, and D. E. Zeitoun. "Numerical study of reactive flow in an over-expanded nozzle: influence of wall temperature and altitude." In Shock Waves, 1187–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27009-6_183.

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Bolgar, Istvan, Sven Scharnowski, and Christian J. Kähler. "Effects of a Launcher’s External Flow on a Dual-Bell Nozzle Flow." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 115–27. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_7.

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Abstract:
Abstract Previous research on Dual-Bell nozzle flow always neglected the influence of the outer flow on the nozzle flow and its transition from sea level to altitude mode. Therefore, experimental measurements on a Dual-Bell nozzle with trans- and supersonic external flows about a launcher-like forebody were carried out in the Trisonic Wind Tunnel Munich with particle image velocimetry, static pressure measurements and the schlieren technique. A strongly correlated interaction exists between a transonic external flow with the nozzle flow in its sea level mode. At supersonic external flow conditions, a Prandtl–Meyer expansion about the nozzle’s lip decreases the pressure in the vicinity of the nozzle exit by about 55%. Therefore a new definition for the important design criterion of the nozzle pressure ratio was suggested, which considers this drastic pressure drop. Experiments during transitioning of the nozzle from sea level to altitude mode show that an interaction about the nozzle’s lip causes an inherently unstable nozzle state at supersonic free-stream conditions. This instability causes the nozzle to transition and retransition, or flip-flop, between its two modes. This instability can be eliminated by designing a Dual-Bell nozzle to transition during sub-/transonic external flow conditions.
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Ludescher, Sandra, and Herbert Olivier. "Film Cooling in Rocket Nozzles." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 65–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_4.

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Abstract In this project supersonic, tangential film cooling in the expansion part of a nozzle with rocket-engine like hot gas conditions was investigated. Therefore, a parametric study in a conical nozzle was conducted revealing the most important influencing parameter on film cooling for the presented setup. Additionally, a new axisymmetric film cooling model and a method for calculating the cooling efficiency from experimental data was developed. These models lead to a satisfying correlation of the data. Furthermore, film cooling in a dual-bell nozzle performing in altitude mode was investigated. The aim of these experiments was to show the influence of different contour inflection geometries on the film cooling efficiency in the bell extension.
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Ziegelhöffer, A., J. Grünermel, A. Dzurba, J. Procházka, F. Kolár, N. Vrbjar, V. Pelouch, B. Ostádal, and L. Szekeres. "Sarcolemmal Cation Transport Systems in Rat Hearts Acclimatized to High Altitude Hypoxia: Influence of 7-Oxo-Prostacyclin." In Heart Function in Health and Disease, 219–28. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3090-9_16.

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Conference papers on the topic "Altitude, Influence of":

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Morales, Mateo, Sergio D. Roa, Luis E. Muñoz, Diego A. Ferreira, and Omar D. Lopez Mejia. "Influence of Altitude on the Performance of a Bicycle-Cyclist Set." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67955.

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There is a tradeoff between power delivery and aerodynamic drag force when cyclists ride at different altitudes. The result is particular to the characteristics of the bicycle as well as the aerobic fitness of the cyclist. This work proposes a methodology based on an integrated approach to the study of the influence of altitude on power output and aerodynamic drag over a particular bicycle-cyclist set. The methodology consists of an independent analysis for each of the effects, to conclude with an integration of results that allows estimating the overall effect of altitude on cycling performance. A case study for the application of the methodology was developed, and the obtained results apply for the specific bicycle-cyclist set under analysis. First, the relationship between power and time was analyzed for a male recreational cyclist based on all-out effort tests at two different altitudes: 237 meters and 2652 meters above sea level (m.a.s.l). Second, the effects of environmental conditions on air density and drag area coefficient due to altitude changes were analyzed based on Computational Fluid Dynamics (CFD) simulations. It was found that for the bicycle-cyclist set under study, the sustainable power output for 1-hour cycling was reduced 45W for the high-altitude condition as a consequence of the reduction in the maximum oxygen uptake capacity. In addition, the aerodynamic drag force is reduced in greater proportion due to the change in air density than due to the change in drag coefficient. Finally, the results of both effects were integrated to analyze the overall influence of altitude on cycling performance. It was found that for the analyzed case study, the aerodynamic advantage at higher altitude dominates over the disadvantage of reduction in power output: despite delivering 45W less, the subject can travel an additional distance of 900 meters during a one hour ride for the high-altitude condition compared to that in low altitude.
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Bolanakis, Dimosthenis E., Konstantinos T. Kotsis, and Theodore Laopoulos. "Temperature influence on differential barometric altitude measurements." In 2015 IEEE 8th International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS). IEEE, 2015. http://dx.doi.org/10.1109/idaacs.2015.7340711.

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Myers, Thomas, David Klyde, Duane McRuer, and Charles Suchomel. "Influence of path-altitude lag in hypersonic flying qualities." In 33rd Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-555.

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Huang, Zhongwen, Xiaoli Li, and Yong Deng. "The low-altitude wind shear and its influence upon hedgehopping." In 2000 World Aviation Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-5570.

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Yi, Yaxing, Kaiduan Yue, Mei Yuan, and Jian Xie. "Infrared object detection: the influence of flying altitude and velocity." In International Conference on Optical Instrumentation and Technology, edited by Shenghua Ye, Guangjun Zhang, and Jun Ni. SPIE, 2009. http://dx.doi.org/10.1117/12.837848.

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Zhongwen, Huang, Li Xiaoli, and Deng Yong. "The Low-Altitude Wind Shear and Its Influence Upon Hedgehopping." In World Aviation Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2000. http://dx.doi.org/10.4271/2000-01-5570.

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Tapakis, Rogiros, Alexandros Charalambides, and Silas Michaelides. "Influence of Solar Altitude on Diffuse Fraction Correlations in Cyprus." In EuroSun 2014. Freiburg, Germany: International Solar Energy Society, 2015. http://dx.doi.org/10.18086/eurosun.2014.08.11.

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Petrov, Antonio, Fidanka Ilieva, Sanja Velichkovich Kostadinovska, and Violeta Dimovska. "INFLUENCE OF INDIGENOUS AND COMMERCIAL YEASTS ON THE PRODUCTION OF RED WINE FROM VRANEC, MERLOT AND FRANKOVKA IN VINICA WINE REGION." In XXVII savetovanje o biotehnologiji. University of Kragujevac, Faculty of Agronomy, 2022. http://dx.doi.org/10.46793/sbt27.529p.

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The aim of this study was the influence of yeasts on the production of red wines from the wine region of Vinica. The research was conducted on three grape varieties, cultivated in 3 different micro locations, each of which has its own unique characteristics and different altitudes. The three grape varieties were included: Vranec (cultivated in the area of Krshla, Vinica, at an altitude of 400m), Frankovka (cultivated in the area of Baltaci, Vinica, at an altitude of 520m) and Merlot (cultivated in Dragobrashte, Vinica, at an altitude of 540m ). The main goal of the research is to define the effect of the yeast on the quality of young wines. The indigenous types of yeast already present in the grapes (wild yeasts) and the commercial types from the Saccharomyces cerevisiae family which were isolated for use in international production of red wines of average tannin value (SELECTYS® LA DÉLICIEUSE) were applied. The research of the wines was carried out in the Wine Institute at the State Phytosanitary Laboratory in Skopje(North Macedonia) and involved examination of the wine quality parameters such micro and macro wine elements with ICP/MS and FOSS WINESCAN, parameters for alcohol, sugar, total acids, volatile acids, pH, total/volatile acids. This research gave insight of the correlation between samples of the wine and their parameters. It was further expanded with parameters for micro and macro wine elements which also shows the correlation of the wine samples. The wine region of Vinica is a developing region of great potential and this is the first step to presenting a vision for wine development in the region.
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Cho, C., and S. Raque. "Influence of the infrared radiation on a high altitude scientific balloon." In 40th AIAA Aerospace Sciences Meeting & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-1044.

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Luo, Xiaomin, Lei Wang, and Lei Yang. "Influence of Induced Altitude Acclimatization on Development of Acute Mountain Sickness Associated with a Subsequent Rapid Ascent to High Altitude." In 2016 IEEE 16th International Conference on Bioinformatics and Bioengineering (BIBE). IEEE, 2016. http://dx.doi.org/10.1109/bibe.2016.41.

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Reports on the topic "Altitude, Influence of":

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Muza, Stephen R., Paul B. Rock, Michael Zupan, James Miller, and William R. Thomas. Influence of Moderate Altitude Residence on Arterial Oxygen Saturation at Higher Altitudes. Fort Belvoir, VA: Defense Technical Information Center, May 2003. http://dx.doi.org/10.21236/ada421496.

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Gimelshein, Sergey F., Alina A. Alexeenko, Dean C. Wadsworth, and Natalia E. Gimelshein. The Influence of Particulates on Thruster Plume / Shock Layer Interaction at High Altitudes. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada433926.

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