Results 91 to 100 of about 516,930 (293)

An 8-cm electron bombardment thruster for auxiliary propulsion [PDF]

Thruster size, beam current level, and specific impulse trade-offs are considered for mercury electron bombardment ion thrusters to be used for north-south station keeping of geosynchronous spacecraft.
Banks, B. A., Hudson, W. R.
core   +1 more source

Development of an Ex Vivo Organ Culture Technique to Evaluate Probiotic Utilization in IBD [PDF]

, 2016
The consistent technical and conceptual progress in the study of the microbiota has led novel impulse to the research for therapeutical application of probiotic bacteria in human pathologies, such as inflammatory bowel disease (IBD).
DELLE FAVE, Gianfranco, Lanini, Claudio, Martorelli, M, Pagnini, C   +3 more
core   +1 more source

BMI‐1 modulation and trafficking during M phase in diffuse intrinsic pontine glioma

FEBS Open Bio, EarlyView.
The schematic illustrates BMI‐1 phosphorylation during M phase, which triggers its translocation from the nucleus to the cytoplasm. In cycling cells, BMI‐1 functions within the PRC1 complex to mediate H2A K119 monoubiquitination. Following PTC596‐induced M phase arrest, phosphorylated BMI‐1 dissociates from PRC1 and is exported to the cytoplasm via its
Banlanjo Umaru, Deepak Kumar Mishra, Shiva Senthil Kumar, Hao‐Han Pang, Brendan Devine, Komal Khan, Rachid Drissi   +6 more
wiley   +1 more source

Structural Vector Autoregressions with Nonnormal Residuals [PDF]

In structural vector autoregressive (SVAR) models identifying restrictions for shocks and impulse responses are usually derived from economic theory or institutional constraints.
Helmut Luetkepohl, Markku Lanne
core   +3 more sources

Tracking Motor Progression and Device‐Aided Therapy Eligibility in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterise the progression of motor symptoms and identify eligibility for device‐aided therapies in Parkinson's disease, using both the 5‐2‐1 criteria and a refined clinical definition, while examining differences across genetic subgroups.
David Ledingham, Sahana Sathyanarayana, Charlotte B. Stewart, Robyn Iredale, Victoria Foster, Debra Galley, Mark Baker, Nicola Pavese   +7 more
wiley   +1 more source

A Review on Liquid Pulsed Laser Propulsion

Aerospace
Laser propulsion is a new conceptual technology that drives spacecraft and possesses advantages such as high specific impulse, large payload ratio, and low launch cost.
Sai Li, Baosheng Du, Qianqian Cui, Jifei Ye, Haichao Cui, Heyan Gao, Ying Wang, Yongzan Zheng, Jianhui Han   +8 more
doaj   +1 more source

Upper stages utilizing electric propulsion [PDF]

The payload characteristics of geocentric missions which utilize electron bombardment ion thruster systems are discussed. A baseline LEO to GEO orbit transfer mission was selected to describe the payload capabilities.
Byers, D. C.
core   +1 more source

A Flight Demonstration of Plasma Rocket Propulsion [PDF]

, 2000
The Advanced Space Propulsion Laboratory at the NASA Johnson Space Center has been engaged in the development of a variable specific impulse magnetoplasma rocket (V ASIMR) for several years.
Chang-Diaz, Franklin, Hitt, Michael, Lepore, Joseph, Petro, Andrew, Schwenterly, WIlliam   +4 more
core   +1 more source

Prediction Model for Etiologic Differentiation of Isolated Vestibular Syndrome in Emergency Settings

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study aimed to develop and validate a predictive model for differentiating central from peripheral etiologies in patients with isolated vestibular syndrome (VS). Methods In this multicenter retrospective cohort study, 506 patients with isolated VS from five hospitals were divided into derivation (n = 301) and validation (n = 205)
Guo Wenting, Du Liping, Yang Yi, Hu Jin, Ye Bijun, Wang Jianer, Liu Shuangsi, Guo Shunyuan, Cai Xiaofeng, Wang Huiyuan, Wu Bin, Yu Xiang, Shi Tianming   +12 more
wiley   +1 more source

Review of novel energetic polymers and binders – high energy propellant ingredients for the new space race

Designed Monomers and Polymers, 2019
Current solid rocket propellant formulations still employ traditional ingredients utilized since the 1960s, such as hydroxyl terminated polybutadiene (HTPB).
Tianze Cheng
doaj   +1 more source