Results 41 to 50 of about 23,350 (224)

Optical Metabolic Imaging of Human Skin Using Multiphoton FLIM Tomography

IEEE Photonics Journal
Optical metabolic imaging (OMI) of human skin is based on the cellular autofluorescence, mainly due to two-photon excitation of fluorescent coenzymes such as NAD(P)H (reduced nicotinamide adenine dinucleotide) and FAD (flavin adenine dinucleotide), with ...
K. Koenig
doaj   +1 more source

Expedition Cognition: A Review and Prospective of Subterranean Neuroscience With Spaceflight Applications

Frontiers in Human Neuroscience, 2018
Renewed interest in human space exploration has highlighted the gaps in knowledge needed for successful long-duration missions outside low-Earth orbit.
Nicolette B. Mogilever, Lucrezia Zuccarelli, Ford Burles, Giuseppe Iaria, Giacomo Strapazzon, Loredana Bessone, Emily B. J. Coffey   +6 more
doaj   +1 more source

Additive Manufacturing of High‐Performance Polymers for Extreme Environments

Advanced Science, EarlyView.
Additive manufacturing of high‐performance polymers for extreme environments is critically reviewed through an integrated chemistry‐processing‐structure‐property‐qualification framework. The review compares fused filament fabrication, selective laser sintering, and direct ink writing, linking rheology and thermal history to crystallization, defect ...
Md Tofazzal Hossain, Mohammed Intishar Nur, Md Shajedul Hoque Thakur, Indranil Dey, Md Mesbahul Maruf, Md Jahid Hasan, Suryasarathi Bose, Muhammad M. Rahman   +7 more
wiley   +1 more source

Investigation of the Film Cooling Performance of Laminated SiC_fSiC Composite Plates

Aerospace
Silicon carbide fiber-reinforced silicon carbide matrix ceramic composites (SiCf/SiC) are extensively utilized in high-temperature resistant materials in the aerospace industry.
Zhaoguo Mi, Zhenhua Chen, Kanghe Jiang, Weihua Yang   +3 more
doaj   +1 more source

Reduction of Movement in Neurological Diseases: Effects on Neural Stem Cells Characteristics

Frontiers in Neuroscience, 2018
Both astronauts and patients affected by chronic movement-limiting pathologies face impairment in muscle and/or brain performance. Increased patient survival expectations and the expected longer stays in space by astronauts may result in prolonged motor ...
Raffaella Adami, Jessica Pagano, Michela Colombo, Natalia Platonova, Deborah Recchia, Raffaella Chiaramonte, Roberto Bottinelli, Monica Canepari, Daniele Bottai   +8 more
doaj   +1 more source

NASA Astronauts [PDF]

, 1967
Biographical sketches of astronauts, training notes, and NASA manned space flight ...

core  

Ice cores and astronauts

, 2009
While policy-makers discuss the benefits of manned spaceflight to the moon and beyond, scientists and engineers are considering how to protect astronauts from the harsh realities of space.
Horne, Richard B.
core   +3 more sources

Matrix Stiffness Orchestrates Mesenchymal Stem Cell Lineage Commitment Toward Osteogenesis and Adipogenesis Through the PIEZO1/SP1/STC2 Axis

Advanced Science, EarlyView.
Matrix stiffness directs mesenchymal stem cell lineage commitment through PIEZO1‐dependent activation of the SP1/STC2 pathway. Stiff matrices favor osteogenesis and suppress adipogenesis, whereas the loss of PIEZO1 function impairs early bone formation. STC2 retains lineage‐regulatory activity even when PIEZO1 is inactive.
Shuo Zhang, Siteng Li, Wenzhong Chen, Qingcheng Song, Haiyue Zhao, Peng Wang, Yiran Zhang, Wenquan Liang, Shaowei Zheng, Juan Wang, Wei Chen, Yanbin Zhu, Yingze Zhang   +12 more
wiley   +1 more source

Comparison of Autonomic Control of Blood Pressure During Standing and Artificial Gravity Induced via Short-Arm Human Centrifuge

Frontiers in Physiology, 2018
Autonomic control of blood pressure is essential toward maintenance of cerebral perfusion during standing, failure of which could lead to fainting. Long-term exposure to microgravity deteriorates autonomic control of blood pressure.
Ajay K. Verma, Da Xu, Michelle Bruner, Amanmeet Garg, Nandu Goswami, Andrew P. Blaber, Andrew P. Blaber, Kouhyar Tavakolian, Kouhyar Tavakolian   +8 more
doaj   +1 more source

Interactive Prompt‐Guided Robotic Grasping for Arbitrary Objects Based on Promptable Segment Anything Model and Force‐Closure Analysis

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
A laser pointer‐guided robotic grasping method for arbitrary objects based on promptable segment anything model and force‐closure analysis is presented. Grasp generation methods based on force‐closure analysis can calculate the optimal grasps for objects through their appearances. However, the limited visual perception ability makes robots difficult to
Yan Liu, Yaxin Liu, Ruiqing Han, Kai Zheng, Yufeng Yao, Ming Zhong   +5 more
wiley   +1 more source