Results 191 to 200 of about 2,675 (308)

Starting modes of multidirectional electrodeless plasma thruster with closed ring-shaped gas discharge chamber. [PDF]

Sci Rep
Shumeiko AI, Andronov AA, Pashaev AD, Savelev PO, Telekh VD.   +4 more
europepmc   +1 more source

Modeling an Anode Layer Hall Thruster and its Plume. [PDF]

A study of the D55 Hall thruster are performed. The first part of this thesis investigates the xenon plasma properties within the D55 Hall thruster channel using a hydrodynamic model. The discharge voltage (V) and current (I) characteristic thruster are
Choi, Yongjun
core  

Effects of timed LED regimes on tomato plant traits, performance of two‐spotted spider mites, and predatory mites (Phytoseiulus persimilis)

Pest Management Science, Volume 81, Issue 4, Page 2300-2311, April 2025.
Light‐emitting diode (LED)‐based treatments for enhancing crop production and pest management have primarily focused on continuous treatments. This study, using Tetranychus urticae and Phytoseiulus persimilis, demonstrates that the timing of LED supplementation is crucial for designing integrated pest management strategies that improve both plant ...
Patrice Savi, Samantha Hall, Maria Hernandez, Anil Mantri, Daniel Kliebenstein, Christian Nansen   +5 more
wiley   +1 more source

High performance of high-temperature-superconducting MPD thrusters: analytical MHD modeling and experimental demonstration. [PDF]

Natl Sci Rev
Zheng J, Du Y, Aftab H, Liu H, Li M, Zhu L, Lu Y, Ke M, Zhu M, Wu J, Li B.   +10 more
europepmc   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Hall effect thruster impedance characterization in ground-based vacuum test facilities. [PDF]

J Elect Propuls
Jovel DR, Cabrera JD, Walker MLR.
europepmc   +1 more source

Automated Lawn Maintenance: An Agronomic and Operational Review of Turf Health, Biodiversity, and Field Performance

Journal of Field Robotics, EarlyView.
ABSTRACT Grass mowing is one of the most resource‐consuming activities in green maintenance, whether in private areas such as home gardens or in public spaces like urban parks. In recent years, concerns related to climate change, human health, and sustainability have become increasingly prominent in green maintenance, leading manufacturers and industry
Andrea Palladini, Lorenzo Guerrini, Marco Fontanelli, Lucia Bortolini   +3 more
wiley   +1 more source

A neural network based approach for thrust prediction in cold gas propulsion systems. [PDF]

Sci Rep
Farhid M, Ghavidel Aghdam MR, Shameli M.
europepmc   +1 more source

Rapid thruster-in-the-loop optimization for Hall thrusters

Journal of Electric Propulsion
Peter Thoreau, Aria Johansen, Michael R. Holmes, Justin M. Little   +3 more
openaire   +1 more source

Exam Preview Methods Are Associated With Improvements for the Experiences and Learning of College Science Students

Science Education, EarlyView.
ABSTRACT College science exams are an important and widespread marker for student progress toward technical careers. Predominantly enacted using traditional teaching practices, exams also represent an opportunity for significant improvement in higher education.
Benjamin L. Wiggins, Kerri Wingert, Gregory J. Crowther   +2 more
wiley   +1 more source