Results 41 to 50 of about 350,286 (305)

Advancing high-altitude medicine: a model for the future

open access: yesSignal Transduction and Targeted Therapy
With rising global high-altitude travel, occupational exposure, and permanent habitation, the health burden of high-altitude-specific diseases and high-altitude-related diseases has become increasingly prominent, highlighting an urgent need for in-depth ...
Wenjin Sun   +6 more
doaj   +1 more source

Hematological Risk Factors for High-Altitude Headache in Chinese Men Following Acute Exposure at 3,700 m

open access: yesFrontiers in Physiology, 2017
Background: High-altitude headache (HAH) is a notably common disorder affecting the daily life of travelers ascending to high altitude. Hematological parameters are important clinical examinations for various diseases.
He Huang   +18 more
doaj   +1 more source

Athletes at altitude [PDF]

open access: yesThe Journal of Physiology, 1967
1. Six international middle‐distance runners were investigated during 4 weeks in England and during a similar period in Mexico City (2270 m (7450 ft.))2. In 3‐mile (4828 m) time trials at 2270 m the increase in time taken by four subjects compared with sea level was 8·5% on the 4th day and 5·7% on the 29th day.
openaire   +2 more sources

On the Circular Altitude of Graphs [PDF]

open access: yesBulletin of the Iranian Mathematical Society, 2020
Peter Cameron introduced the concept of the circular altitude of graphs; a parameter which was shown by Bamberg et al. that provides a lower bound on the circular chromatic number. In this note, we investigate this parameter and show that the circular altitude of a graph is equal to the maximum of circular altitudes of its blocks.
openaire   +2 more sources

Biomass DNA: An Emerging Building Block for Advanced Materials

open access: yesAdvanced Materials, EarlyView.
Biomass DNA is rapidly emerging from its traditional role as a genetic blueprint to serve as a versatile abundant, highly programmable polymeric building block. This review highlights the transformation of macroscopic bulk biomass DNA into next generation of functional materials, spanning from dynamic hydrogels, sustainable bioplastics, and high ...
Yuwei Hu, Itamar Willner, Li Niu
wiley   +1 more source

5-Hydroxytryptamine receptor 1D overexpression exacerbates gastric cancer proliferation, invasion, and angiogenesis by activating the Wnt/β-catenin signaling

open access: yesBMC Cancer
Dysregulation of 5-Hydroxytryptamine and its receptors play important roles in the development and progression of malignant tumors. However, the biological role and underlying molecular mechanism of 5-Hydroxytryptamine Receptor 1D (HTR1D) gastric cancer (
Juan Wu   +9 more
doaj   +1 more source

Adropin Is a Key Mediator of Hypoxia Induced Anti-Dipsogenic Effects via TRPV4-CamKK-AMPK Signaling in the Circumventricular Organs of Rats

open access: yesFrontiers in Molecular Neuroscience, 2017
Water intake reduction (anti-dipsogenic effects) under hypoxia has been well established, but the underlying reason remains unknown. Our previous report indicated that activated TRPV4 neurons in SFO are associated with anti-dipsogenic effects under ...
Qing-Yuan Huang   +19 more
doaj   +1 more source

Stratospheric Optical Inter-Platform Links for High Altitude Platforms [PDF]

open access: yes, 2002
Optical propagation simulations for the case of a laser optical link between two stratospheric High Altitude Platforms have been performed. The simulations, together with communications link budget calculations, show that high data rate communications ...
Giggenbach, Dirk   +7 more
core   +1 more source

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

open access: yesAdvanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Light‐Driven Quadrupedal Walking Biohybrid Robot With Antagonistic Muscle‐Rings and Inclined Joints

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a light‐driven quadrupedal walking biohybrid robot powered by antagonistic muscle‐rings that achieve alternating walking gait. Optical training improved reproducibility of cultured muscle tissues, while caffeine treatment enhanced contractile force.
Shotaro Saito   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy