Results 41 to 50 of about 6,760 (222)

Settlement Process on The Black Sea Northeastern Coast in the Context of Frederick Turner’s Frontier Concept (1830‑1850s)

Журнал Фронтирных Исследований
The article is based on documentary materials and examines the settlement process on the Black Sea northeastern coast in the 1830–1850s. The methodological basis of the study is F. Turner’s frontier conception. The attention is focused on the analysis of
Sergey N. Shapovalov
doaj   +1 more source

Nocturnal hypoxemia, blood pressure, vascular status and chronic mountain sickness in the highest city in the world

Annals of Medicine, 2022
Introduction Chronic mountain sickness (CMS) is a condition characterized by excessive erythrocytosis in response to chronic hypobaric hypoxia. CMS frequently triggers cardiorespiratory diseases such as pulmonary hypertension and right or left heart ...
Elisa Perger, Sébastien Baillieul, François Esteve, Aurélien Pichon, Gzregorz Bilo, Davide Soranna, Stéphane Doutreleau, Yann Savina, Mathilde Ulliel-Roche, Julien V. Brugniaux, Emeric Stauffer, Laura Oberholzer, Connor Howe, Ivan Hannco, Carolina Lombardi, Renaud Tamisier, Jean-Louis Pepin, Samuel Verges, Gianfranco Parati   +18 more
doaj   +1 more source

Elevational variation in heart mass and suppression of hypoxia‐induced right ventricle hypertrophy in Andean leaf‐eared mice (Phyllotis)

The Journal of Physiology, EarlyView.
Abstract figure legend In lowland mammals that ascend to high elevation, hypoxia‐induced changes in the pulmonary circulation can give rise to hypoxic pulmonary hypertension (HPH) and associated right‐ventricle (RV) hypertrophy. Andean mice with broad elevational ranges have greater heart mass relative to body size at higher elevations, but they ...
Naim M. Bautista, Nathanael D. Herrera, Marcial Quiroga‐Carmona, Chandrasekhar Natarajan, Adriana Rico‐Cernohorska, Jorge Salazar Bravo, Graham R. Scott, Guillermo D'Elía, Zachary A. Cheviron, Jay F. Storz   +9 more
wiley   +1 more source

Mitochondrial physiology in cardiac muscle of deer mice native to high altitude

The Journal of Physiology, EarlyView.
Abstract figure legend High‐altitude deer mice exhibited evolved changes in mitochondrial energy metabolism and reactive oxygen species (ROS) management that may support cardiac performance under cold hypoxic conditions. High‐altitude mice had increased activity of lactate dehydrogenase (LDH) in the heart, probably enhancing the capacity for lactate ...
Ranim Saleem, Samuel G. Robichaud, Simon G. Lamarre, Graham R. Scott   +3 more
wiley   +1 more source

The influence of haemoglobin–O2 affinity on aerobic capacity in hypoxia in high‐altitude deer mice (Peromyscus maniculatus)

The Journal of Physiology, EarlyView.
Abstract figure legend The influence of haemoglobin–O2 affinity on aerobic capacity in hypoxia has been contentious. Many high‐altitude natives have greater haemoglobin–O2 affinity (lower P50, the O2 pressure at 50% haemoglobin saturation) than their low‐altitude counterparts, but the advantages of this change for aerobic metabolism have often remained
Kayla M. Garvey, Graham R. Scott
wiley   +1 more source

Ventilatory and heart rate responses to hypoxia in pre‐ and post‐menopausal ethnically Tibetan women residing at ∼3800 m in Mustang, Nepal

The Journal of Physiology, EarlyView.
Abstract figure legend Tibetan women livingat high altitude exhibit distinct physiological traits that can enhance oxygen transport in chronic hypoxia. Menopausal status influences cardiopulmonary responses to hypoxia in women living at low altitudes.
E. A. Moya, J. J. Yu, S. R. Craig, A. Di Rienzo, D. Witonsky, W. Gu, B. Basnyat, K. P. Strohl, F. L. Powell, T. S. Simonson, C. M. Beall   +10 more
wiley   +1 more source

On the issue of circular migrations in the city of Kizlyar in the socio-economic policy context of the Russian Empire on cordon sections of the Caucasian Cordon Line Left Wing in the first half of the 19th century

Вестник Тамбовского университета. Серия: Гуманитарные науки
Importance. A number of issues of circular and pendulum migrations in the city of Kizlyar during the Caucasian War as a part of the multi-vector Caucasian policy are developed.Materials and Methods. The theoretical basis of the research is the concept of
A. A. Gazieva
doaj   +1 more source

Early Metabolic Reprogramming in the Placenta Shapes Resilience to Gestational Hypoxia in High‐Elevation Deer Mice

Molecular Ecology, Volume 35, Issue 21, November 2026.
ABSTRACT Environmental hypoxia at high elevations is linked to increased rates of gestational complications. Evolutionary adaptation to high elevation environments mitigates these complications across mammals, in part through changes in placental function that shape foetal growth potential in late pregnancy.
Megan J. Hemmerlein, Anna Isabel Bautista, Ellery L. Myers, Jeffrey M. Good, Zachary A. Cheviron, Kathryn Wilsterman   +5 more
wiley   +1 more source

Seaforth Highlanders

, 1950
Colour postcard of Seaforth Highlanders (Ross-Shire Buffs)From the collection of William C ...

core   +1 more source

Daytime Ventilatory and Blood Acid–Base Responses During Ascent to 3500 m Are Larger and More Rapid in Females Than Males

Comprehensive Physiology, Volume 16, Issue 5, October 2026.
We obtained arterial blood gas samples in 38 healthy lowlander participants (18 female; 20 male) before (D0) and undergoing rapid (D2/3) ascent to and resident at (D9/10) 3500 m. Females had a larger magnitude and more rapid time‐course of ventilatory and renally‐mediated blood acid–base acclimatization with rapid ascent.
Nicole V. Bushfield, Benjamin W. L. MacKenzie, Nicole A. Johnson, Rodion Isakovich, Jamie L. Keess, Nicholas D. J. Strzalkowski, Gustavo Zubieta‐Calleja, Richard J. A. Wilson, Trevor A. Day   +8 more
wiley   +1 more source