Results 41 to 50 of about 39,365 (297)
Modelling of tilt rotor mission performance to assess environmental impact [PDF]
, 2012 New technologies and new rotorcraft operations are being developed in order to meet new environmental requirements such as noise reduction and less pollutant emissions. In this project a parametric study was developed over a tilt rotor model in order to
Ruge Montilla, Jhonn Hamberth +1 more
core
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
International Journal of General Medicine, 2021 Yuan Ning,1 Yushuang Shao,1 Jiangyue Zhao,1 Jinsong Zhang,1 Mingwu Wang,2 Yu Qin1 1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning
Ning Y +5 more
doaj
Neuromuscular performance of balance and posture control in childhood and adolescence
Heliyon, 2020 This study examined a potential age-dependency of both posture and stability (balance) control in children and adolescents in a healthy population. Body posture with open and closed eyes was examined for a total of 456 test persons (age 6.7–17.6 years ...
Oliver Ludwig +4 more
doaj +1 more source
Double-tilt in situ TEM Holder with Ultra-high Stability [PDF]
Microscopy and Microanalysis, 2018 A double tilting holder with high stability is essential for acquiring atomic-scale information by transmission electron microscopy (TEM), but the availability of such holders for in situ TEM studies under various external stimuli is limited.
Mingjie Xu +4 more
openaire +2 more sources
A numerical study on active control for tiltrotor whirl flutter stability augmentation [PDF]
, 2004 The use of active control to augment whirl flutter stability of tiltrotor aircraft is studied by means of a multibody simulation. The numerical model is based on a 1/5 scale semi-span aeroelastic wind tunnel model of a generic tiltrotor concept and ...
Gourinat, Yves +4 more
core
Long-term stability of tilt-controlled gPhoneX gravimeters [PDF]
, 2019 peer reviewedAbstract Spring relative gravimeters are considered too unstable to provide useful information on long-term gravity variations. In this paper, we prove that the new generation of spring gravimeter gPhoneX can reach long-term stability at the
FORES, Benjamin +7 more
core +1 more source
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source
Analysis on controllability and stability of quad-tilt-rotor aircraft in helicopter mode
, 2021 The controllability and stability of quad-tilt-rotor aircraft in helicopter mode are modeled and analyzed, which will provide a theoretical guidance for the subsequent control system design.
core +2 more sources
Sowing depth stability analysis and test verification of no-tillage planter parallel 4-bar row unit
HeliyonThe sowing depth stability and consistency of the no-tillage planter, particularly the high-speed operation, are poor. A reason for this is that the structure and parameter selection of no-tillage planter row unit profiling mechanism are unreasonable ...
Jiajie Shang +7 more
doaj +1 more source