Results 101 to 110 of about 98,594 (308)

Correlation of Specific Impulse and Ignition Delay in Liquid Rocket Propellants

, 1977
Theoretically there seems to be a linear dependence between specific impulse and the ignition delay in liquid bipropellant systems. It has been observed that the plot of specific impulse versus mixture ratio of various systems based on red fuming nitric ...
Kishore, K., Sunitha, M. R., Sunitha, MR, Kishore, K   +3 more
core   +1 more source

Activity-dependent excitability changes in normal and demyelinated rat spinal root axons [PDF]

, 1985
Myelinated nerve fibres with a reduced safety factor for conduction due to demyelination are easily blocked by trains of impulses. To find out why, in vivo recordings from rat ventral root fibres demyelinated with diphtheria toxin have been supplemented ...
H Bostock, Bostock, Hugh, Grafe, Peter, P Grafe   +3 more
core   +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

Perceived Impacts and Predictors of Cannabis Products Used by Patients with Rheumatologic Conditions in Alberta, Canada: A Multivariable Analysis of Cross‐Sectional Survey Data

Arthritis Care &Research, EarlyView.
Objective This study aimed to characterize cannabis product choices (cannabinoid content and formulation) among patients with rheumatologic conditions and their associations with patient factors, patient‐reported perceived side effects, and positive impacts.
Susan Zhang, Samuel A.J. Lowe, Frank Sun, Allyson Jones, Tarek Turk, Joanne Olson, Pauline Paul, Shelby Yamamoto, Linda Kolewaski, Elaine Yacyshyn, Cheryl A. Sadowski   +10 more
wiley   +1 more source

Aplication of Density Property as Alternative Propellant Performance for Accelerating The Development of Propellant Composition

, 2014
Discussion against the results development of specific impulse data (Isp) propellants longitudinally based propellant composition variations has been done.
Retno Ardianingsih, Luthfia Hajar Abdillah, Kendra Hartaya   +2 more
core  

Collisional Losses in a VASIMR (Variable Specific-Impulse Magnetoplasma Rocket)

, 2023
A VASIMR (Variable Specific-Impulse Magnetoplasma Rocket) engine is an electrically-powered engine that uses plasma as a propellant for accelerating spacecraft in the vacuum of space.
Matheson, Philip, Miera, Benjamin
core   +1 more source

Analysis of carbon nano particle variant as the propellant fuel to increase specific impulses of rockets [version 3; peer review: 1 approved, 2 approved with reservations]

F1000Research
Background This study compares propellant fuels’ specific thrust and impulse parameters using nanocarbon variant fuels from coconut shells and coal. Specific impulses and impulses are essential parameters that determine rocket performance.
MAE Hafizah, Y Ruyat, RDA Navalino, NRS Muda   +3 more
doaj   +1 more source

Health Care Use Among Patients Presenting to Emergency Department for Gout Flares in Ontario, Canada: A Population‐Based Health Systems Analysis

Arthritis Care &Research, EarlyView.
Objective We characterized emergency department (ED) gout visits and identified patient characteristics and health services patterns contributing to ED presentations. Methods We conducted a population‐based study of ED gout visits in Ontario, Canada, between 2014 and 2023.
Timothy S. H. Kwok, Samantha Morais, William K. Silverstein, Clare L. Atzema, Gregory Choy, Priyanka Chandratre, Ping Li, Jessica Widdifield   +7 more
wiley   +1 more source

Artificial Intelligence–Based Online Symptom Assessment Tools for Systemic Lupus Erythematosus Diagnosis: Patient Perspectives

Arthritis Care &Research, EarlyView.
Objective The objective of this article is to identify perceptions of patients with systemic lupus erythematosus (SLE) regarding artificial intelligence (AI)–based online symptom assessment tools, and the potential of these tools to address diagnostic barriers.
Olivia A. Stein, Jennifer L. F. Lee, Evelyne Vinet, Arielle Mendel, Christian A. Pineau, Fares Kalache, Louis‐Pierre Grenier, Sasha Bernatsky   +7 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source