Results 51 to 60 of about 848,646 (303)

A Functionally Conserved Enhancer is Critical for PGC1A Expression and Thermogenesis in Brown Fat

open access: yesAdvanced Science, EarlyView.
An evolutionarily conserved enhancer controls PGC1A expression and thermogenic activation in brown adipose tissue. Integrative multi‐omics analyses identify two BAT‐specific enhancers, with PGC1A‐En1 functioning as the dominant regulatory element that maintains thermogenic capacity across species.
Duo Su   +10 more
wiley   +1 more source

Hypoxia Exacerbates Inflammatory Acute Lung Injury via the Toll-Like Receptor 4 Signaling Pathway

open access: yesFrontiers in Immunology, 2018
Acute lung injury (ALI) is characterized by non-cardiogenic diffuse alveolar damage and often leads to a lethal consequence, particularly when hypoxia coexists.
Gang Wu   +11 more
doaj   +1 more source

Effect of High-Flow Oxygen on Exercise Performance in COPD Patients. Randomized Trial

open access: yesFrontiers in Medicine, 2021
Background: High-flow oxygen therapy (HFOT) provides oxygen-enriched, humidified, and heated air at high flow rates via nasal cannula. It could be an alternative to low-flow oxygen therapy (LFOT) which is commonly used by patients with chronic ...
Konstantinos Bitos   +41 more
doaj   +1 more source

The airglow layer emission altitude cannot be determined unambiguously from temperature comparison with lidars [PDF]

open access: yes, 2018
I investigate the nightly mean emission height and width of the OH*(3-1) layer by comparing nightly mean temperatures measured by the ground-based spectrometer GRIPS 9 and the Na lidar at ALOMAR.
Dunker, Tim
core   +2 more sources

High Altitude Illness [PDF]

open access: yesJournal of the Royal Army Medical Corps, 2005
Introduction The aims of this article are to outline the physiology of high altitude, the treatment of altitude illness and to describe opportunities for further education in mountain medicine. Human difficulty with the rarefied air at high altitudes has been recognised since ancient times.
Davis, P   +4 more
openaire   +4 more sources

Study of Free‐Space Optical Quantum Network: Review and Prospectives

open access: yesAdvanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Covalent Bonds Reinforced Strength and Modulus of Heterocyclic Aramid Fiber by Interfacial Aminated‐MXene Nanosheets

open access: yesAdvanced Science, EarlyView.
We demonstrate the covalent bonds strategy to enhance the mechanical property of PBIA fiber by using interfacial MXene‐NH2 nanosheets. The MXene‐NH2 nanosheets with reactive amino sites that can serve as nucleating agents and chain anchors to enhance orientation, crystallinity and interchain interaction of PBIA fiber via strong interfacial amido ...
Boyuan Chen   +7 more
wiley   +1 more source

Effect of inhaled nitric oxide on oxygen-carrying capacity of red blood cells and hypoxia tolerance in mice

open access: yesDi-san junyi daxue xuebao, 2019
Objective To study the effects of nitric oxide (NO) inhalation on oxygen-carrying capacity of red blood cells and hypoxia tolerance in mice. Methods Peripheral blood from 8-week-old male mice was exposed to nitrogen gas containing NO in an oxygenation ...
SU Wenting   +3 more
doaj   +1 more source

Monitoring atmospheric pollutants with a heterodyne radiometer transmitter-receiver [PDF]

open access: yes, 1973
The presence of selected atmospheric pollutants can be determined by transmitting an infrared beam of proper wavelength through the atmosphere, and detecting the reflections of the transmitted beam with a heterodyne radiometer transmitter-receiver using ...
Menzies, R. T.
core   +1 more source

Highly Efficient and Environmentally Stable Radiative Cooling Fabric: Integrating Photoluminescence and Hierarchical Core–Shell Fibers

open access: yesAdvanced Science, EarlyView.
A scalable radiative cooling fabric engineered with a multi‐layer assembly core–shell structure and integrated photoluminescent materials is reported. The fabric exhibits remarkable environmental stability, including UV resistance, mechanical durability, hydrophobicity, stain resistance, thermal stability, and flame retardancy, demonstrating its ...
Hongtao Liu   +8 more
wiley   +1 more source

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