Results 21 to 30 of about 2,781,871 (195)

Management of deep space infections of the neck [PDF]

open access: yes, 2018
Infections of the deep neck spaces often present a clinical challenge for the ENT surgeon. Management of these complex suppurations of the neck requires in fact a multidisciplinary approach due to possible complications like mediastinitis, septic shock ...
Bălălău, Cristian   +9 more
core   +4 more sources

Simulation Research and Analysis of Wavelength Modulation Off-Axis Integrated Cavity Output Spectrum Measurement System

open access: yesSensors
Wavelength modulation spectroscopy off-axis integrated cavity output spectroscopy (WMS-OA-ICOS) is an in situ detection technique suitable for analyzing trace gases in the atmospheres, characterized by its high sensitivity and ease of integration ...
Tao Wu   +10 more
doaj   +1 more source

Cross-Domain Fault Diagnosis Using Knowledge Transfer Strategy: A Review

open access: yesIEEE Access, 2019
Data-driven fault diagnosis has been a hot topic in recent years with the development of machine learning techniques. However, the prerequisite that the training data and the test data should follow an identical distribution prevents the conventional ...
Huailiang Zheng   +6 more
doaj   +1 more source

Advancements in Mars Habitation Technologies and Terrestrial Simulation Projects: A Comprehensive Review

open access: yesAerospace
This review examines advancements in Mars habitation technologies, emphasizing Earth-based analog missions and closed-loop life support systems critical for long-duration human presence on the Red Planet.
Yubin Zhong   +7 more
doaj   +1 more source

A Dynamic Illumination-Constrained Spatio-Temporal A* Algorithm for Path Planning in Lunar South Pole Exploration

open access: yesRemote Sensing
Future lunar south pole missions face dual challenges of highly variable illumination and rugged terrain that directly constrain rover mobility and energy sustainability.
Qingliang Miao, Guangfei Wei
doaj   +1 more source

Descent trajectory reconstruction and landing site positioning of Chang’E-4 on the lunar farside

open access: yesNature Communications, 2019
The Chang’E-4 mission in January 2019 had the major challenge to land on the lunar far side without traditional radiometric techniques due to the missing line-of-sight.
Jianjun Liu   +16 more
doaj   +1 more source

Filtering of Magnetosonic Waves by Mesoscale Plasmaspheric Density Interfaces

open access: yesGeophysical Research Letters, 2023
Magnetosonic waves inside and outside the plasmasphere differ statistically in occurrence rate, frequency, and intensity. How the density interface separates magnetosonic waves inside and outside the plasmasphere remains not fully understood.
Zhiyong Wu   +3 more
doaj   +1 more source

A Comprehensive Review of Path-Planning Algorithms for Planetary Rover Exploration

open access: yesRemote Sensing
Path-planning algorithms for planetary rovers are critical for autonomous robotic exploration, enabling the efficient and safe traversal of complex and dynamic extraterrestrial terrains.
Qingliang Miao, Guangfei Wei
doaj   +1 more source

Direct observation of plasmonic index ellipsoids on a deep-subwavelength metallic grating [PDF]

open access: yes, 2011
We constructed a metallic grating on a deep-subwavelength scale and tested its plasmonic features in visible frequencies. The deep-subwavelength metallic grating effectively acts as an anisotropic homogeneous uniaxial form-birefringent metal, exhibiting ...
Fainman, Yeshaiahu   +2 more
core   +2 more sources

Deep space network [PDF]

open access: yes, 1972
Background, current status, and sites of Deep Space Network stations are briefly ...
Flanagan, F. M.   +2 more
core   +1 more source

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