Results 51 to 60 of about 163,557 (294)

Interspecific differences and ecological correlations of ultraviolet radiation tolerance in low- and high-altitude fishes

Frontiers in Marine Science, 2022
Ultraviolet radiation (UVR) is a ubiquitous environmental factor and with complex and diverse effects on organisms, and the UVR tolerance of species varies due to selection, adaptation and evolution.
Haoran Gu, Haoran Gu, Haoran Gu, Songtao Li, Songtao Li, Songtao Li, Haoyu Wang, Haoyu Wang, Haoyu Wang, Shudang Zhu, Shudang Zhu, Dengyue Yuan, Dengyue Yuan, Dengyue Yuan, Zhijian Wang, Zhijian Wang, Zhijian Wang   +16 more
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

The Genetic Architecture of Adaptations to High Altitude in Ethiopia

PLoS Genetics, 2012
Although hypoxia is a major stress on physiological processes, several human populations have survived for millennia at high altitudes, suggesting that they have adapted to hypoxic conditions. This hypothesis was recently corroborated by studies of Tibetan highlanders, which showed that polymorphisms in candidate genes show signatures of natural ...
Alkorta-Aranburu, Gorka, Beall, Cynthia M., Witonsky, David B., Gebremedhin, Amha, Pritchard, Jonathan K., Di Rienzo, Anna   +5 more
openaire   +6 more sources

Large‐Scale Genomics Reveals Three‐Source Ancestry and Layered Adaptation to High Altitude in Tibetan Chickens

Advanced Science, EarlyView.
Whole‐genome analysis of 1,054 chickens reveals three ancestral sources (NWC, SYA, and SHF) with distinct temporal entry patterns into the Tibetan Plateau. Route‐specific selection scans, calibrated against a demographic null, suggest complementary functional enrichments—vascular homeostasis (NWC), calcium signaling and cardiac adaptation (SYA), and ...
Zongyi Zhao, Ruixue Nie, Hailu Fan, Tenzin Ngodroup, Li Zhu, Hongbin Pan, Bo Zhang, Hao Zhang   +7 more
wiley   +1 more source

Mechanisms and drug therapy of pulmonary hypertension at high altitude

, 2013
Pulmonary vasoconstriction represents a physiological adaptive mechanism to high altitude. If exaggerated, however, it is associated with important morbidity and mortality.
Allemann, Yves, Scherrer, Urs, Rimoldi, S.F., Sartori, Claudio, Rexhaj, E., Rexhaj, Emrush, Sartori, C., Scherrer, U., Allemann, Y., Rimoldi, Stefano   +9 more
core   +1 more source

Resting pulmonary haemodynamics and shunting: a comparison of sea-level inhabitants to high altitude Sherpas [PDF]

, 2014
The incidence of blood flow through intracardiac shunt and intrapulmonary arteriovenous anastomoses (IPAVA) may differ between Sherpas permanently residing at high altitude (HA) and sea-level (SL) inhabitants as a result of evolutionary pressure to ...
MacLeod, David B, Foster, Glen E, Macleod, David B., Lovering, Andrew T, Lovering, Andrew T., Lewis, Nia C S, Lewis, Nia C. S., Foster, Glen, Bakker, Akke, Day, Trevor A., Lucas, Samuel J.E., Day, Trevor A, Stembridge, Mike, Ainslie, Philip, Lucas, Samuel J E; id_orcid, Ainslie, Philip N   +15 more
core   +1 more source

Introgressed Variation in TaMYB7‐A1 Drives Graded Dormancy and Climate‐Adaptive Pre‐Harvest Sprouting Resistance in Wheat

Advanced Science, EarlyView.
TaMYB7‐A1 directly activates TaABI5 to enhance ABA signaling and regulate ABA‐GA homeostasis, enforcing seed dormancy. Its superior allele, derived from wild einkorn introgression, harbors a MITE insertion that elevates expression and two amino acid substitutions that enhance transcriptional activity, collectively generating graded PHS resistance for ...
Hao Wang, Dongzhi Wang, Yafei Guo, Qi Zheng, Min Zhang, James Simmonds, Jian Hou, Xuemei Liu, Xuelei Lin, Xiaomin Bie, Xiansheng Zhang, Xiaohui Li, Yuan Chen, Xueyong Zhang, Cristobal Uauy, Fei Lu, Chengcai Chu, Zhixi Tian, Jun Xiao   +18 more
wiley   +1 more source

Adaptation, Aging and Disease Epidemiology in High Altitude Population of Ladakh [PDF]

, 2010
While altitude acclimatization refers to the physiological responses that takes place on ascending to hypobaric hypoxic high altitude environment; adaptation is both genetic and non-genetic, consisting of physiological, biochemical or behavioral ...
Norboo, Tsering, Yangzom, Dekyi
core   +1 more source

Metabolic aspects of high‐altitude adaptation in Tibetans [PDF]

Experimental Physiology, 2015
New Findings What is the topic of this review? The topic of this review is how Tibetans have adapted genetically to high altitude, particularly with reference to altitude‐induced changes in metabolism. What advances does it highlight? It highlights recent work on metabolic phenotyping in Tibetans and demonstrates that selected genetic haplotypes ...
Ri-Li, Ge, Tatum S, Simonson, Victor, Gordeuk, Josef T, Prchal, Donald A, McClain   +4 more
openaire   +2 more sources

Natural Resistance to Ovarian Hyperstimulation Syndrome in Estrildid Finches Reveals Macrophage GPR183 as a Potential Therapeutic Target

Advanced Science, EarlyView.
Ovarian macrophage depletion reverses OHSS resistance in estrildid finches and exacerbates OHSS symptoms in rats. Activating macrophage GPR183 alleviates OHSS by reducing pro‐inflammatory factors, increasing immunomodulatory molecules, remodeling CD44/SDC4‐mediated communication, and restoring immune homeostasis.
Xiaofei Yan, Yongjie Huang, Jiabao Yang, Su Ma, Songsong Liu, Xuan Huang, Juergen Brosius, Huaping Zheng, Bing Yao, Li Chen, Shanshan Lai, Cheng Deng   +11 more
wiley   +1 more source