Results 31 to 40 of about 843,251 (286)

An improved formula for standard hypoxia tolerance time (STT) to evaluate hypoxic tolerance in mice

Military Medical Research, 2018
Background Hypoxia is a primary cause of mountain sickness and a common pathological condition in patients with heart failure, shock, stroke, and chronic obstructive pulmonary disease (COPD).
Gang Xu, Yu-Qi Gao, Yi-Xing Gao, Gang Wu, Jian-Yang Zhang, Wen-Xiang Gao   +5 more
doaj   +1 more source

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

Advanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz, Lukas E. Lehner, Stepan Demchyshyn, Bekele Hailegnaw, Phillip Jahelka, Magdalena Breitwieser, Sercan Özen, Andrea Denker, Jürgen Bundesmann, Alina Hanna Dittwald, Dilara Karabulut, Philipp Tockhorn, Steve Albrecht, Felix Lang, Markus C. Scharber, Michael D. Kelzenberg, Harry A. Atwater, Martin Kaltenbrunner   +17 more
wiley   +1 more source

Integrated Metabolomic and Transcriptomic Analysis of Phenylpropanoid Biosynthesis in Silphium perfoliatum

Current Issues in Molecular Biology
Silphium perfoliatum is a promising economic plant rich in bioactive secondary metabolites, yet the molecular regulation of phenylpropanoid biosynthesis across development remains unclear.
Guoying Zhang, Dejun Zhang
doaj   +1 more source

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

Advanced 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

Activation of notch signaling pathway is a potential mechanism for mucin2 reduction and intestinal mucosal barrier dysfunction in high-altitude hypoxia

Scientific Reports
High-altitude hypoxia can cause gastrointestinal issues and damage the intestinal mucosal barrier, which is crucial for digestion and nutrient absorption. The Notch signaling pathway affects this barrier’s integrity. This study explores the Notch pathway’
Ruhan Jia, Ying Han, Qinfang Zhu, Jingxuan Zhang, Huan Zhang, Maojia Ka, Yi Ma, Mohammed Gamah, Wei Zhang   +8 more
doaj   +1 more source

Waves and Magnetism in the Solar Atmosphere (WAMIS)

Frontiers in Astronomy and Space Sciences, 2016
Comprehensive measurements of magnetic fields in the solar corona have a long history as an important scientific goal. Besides being crucial to understanding coronal structures and the Sun’s generation of space weather, direct measurements of their ...
Yuan-Kuen eKo, John Daniel Moses, John Martin Laming, Leonard eStrachan, Samuel eTun Beltran, Steven eTomczyk, Sarah E. Gibson, Frederic eAuchere, Roberto eCasini, Silvano eFineschi, Michael eKnoelker, Clarence eKorendyke, Scott William McIntosh, Marco eRomoli, Jan eRybak, Dennis G. Socker, Angelos eVourlidas, Qian eWu   +17 more
doaj   +1 more source

Effect of dietary supplementation of microalgae Spirulina and Chlorella on growth performance and blood profile of broiler chicken at high altitude

Indian Journal of Animal Sciences, 2022
The objective of this study was to explore the effect of Spirulina and Chlorella as a dietary supplement on the growth performance of broiler chicken at high altitude.
SWATI, KAMRAN WAIDHA, SUBANGGI NEGAM, NAZIA PARVEEN, DEACHAN CHUSKIT, MAYARNGAM K, O P CHAURASIA   +6 more
doaj   +1 more source

Effects of Hyperbaric Hypoxia on Some Enzyme Systems in the Mammalian Liver [PDF]

, 1978
The metabolic effects of hypobaric hypoxic stress on the mammalian liver were studied. The lactate dehydrogenase (LDH) and succinate dehydrogenase (SDH) activity of mouse liver homogenates were measured after exposure to an equivalent altitude of 36,000 ...
Baeyens, Dennis A., Meier, M. J.
core   +2 more sources

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

Advanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang, Jianyang Dong, Yongming Yao, Kaijin Hu, Jianxiong Cui, Yikai Luo, Jiawen Zhang, Shichao Niu   +7 more
wiley   +1 more source

Evaluating cumulative ascent: Mountain biking meets Mandelbrot

, 2011
The problem of determining total distance ascended during a mountain bike trip is addressed. Altitude measurements are obtained from GPS receivers utilizing both GPS-based and barometric altitude data, with data averaging used to reduce fluctuations. The
D. C. RAPAPORT, Mandelbrot B. B.
core   +1 more source