Results 71 to 80 of about 143,533 (301)

Mapping Mental Health Across US States: the Role of Economic and Social Support Policies

The Milbank Quarterly, EarlyView.
Policy Points This perspective argues that state economic and social support policies are key determinants of population mental health. Key policy successes of the past decade include state expansion of Medicaid eligibility, increase in minimum wage, and implementation of paid sick leave.
RACHEL DONNELLY, MATEO P. FARINA
wiley   +1 more source

Construction of Motion Mode Switching System by Machine Learning for Peristaltic Mixing Conveyor Based on Intestinal Movement

IEEE Access
The high frequency of rocket launches requires low-cost solid rocket fuel. Currently, the fuel manufacturing process faces increased launch costs caused by the risk of ignition from rotary mixers and increased equipment and labor costs from batch ...
Iori Terayama, Sana Oshino, Rie Nishihama, Manabu Okui, Ryosuke Adachi, Taro Nakamura   +5 more
doaj   +1 more source

Designing the Space Shuttle Propulsion System [PDF]

, 2011
The major elements of the Space Shuttle Main Propulsion System include two reusable solid rocket motors integrated into recoverable solid rocket boosters, an expendable external fuel and oxidizer tank, and three reusable Space Shuttle Main Engines.
Moore, Dennis, Owen, James, VanHooser, Kathrine, Wlzyn, Ken, Wood, David   +4 more
core   +1 more source

Sublimation of ice particles from rocket exhausts in the upper atmosphere [PDF]

, 2003
The process of sublimation of ice particles from a rocket exhaust in the upper atmosphere is examined. Heating by solar radiation and losses of energy by means thermal radiation and sublimation are taken into account in the thermal balance of the ice ...
Kosch, Mike J., Platov, Y. V.
core   +1 more source

EU Space Law and Earth's Boundaries: Integrating Environmental Impact Assessment and Corporate Due Diligence

Global Policy, EarlyView.
ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley   +1 more source

System Design and Launch of a Hybrid Rocket with a Star-Fractal Swirl Fuel Grain Toward an Altitude of 15 km

Applied Sciences
To achieve low-cost and on-demand launches of microsatellites, the authors have been researching and developing a micro hybrid rocket since 2014. In 2018, a ballistic launch experiment was performed using the developed hybrid rocket, where it reached an ...
Atsushi Takano, Keita Yoshino, Yuki Fukushima, Ryuta Kitamura, Yuki Funami, Kenichi Takahashi, Akiyo Takahashi, Yoshihiko Kunihiro, Makoto Miyake, Takuma Masai, Shizuo Uemura   +10 more
doaj   +1 more source

Study on Thermal Degradation Characteristics and Regression Rate Measurement of Paraffin-Based Fuel

Energies, 2015
Paraffin fuel has been found to have a regression rate that is higher than conventional HTPB (hydroxyl-terminated polybutadiene) fuel and, thus, presents itself as an ideal energy source for a hybrid rocket engine.
Songqi Hu, Guanjie Wu, Yijin Hua, Noor Fatima Rashid, Hongyun Hu   +4 more
doaj   +1 more source

Romania: Political Developments and Data in 2024

European Journal of Political Research Political Data Yearbook, EarlyView.
Abstract In 2024, Romania organized elections at all levels. Those for the Romanian and European Parliaments saw increased support for anti‐system, Euroskeptic, and sovereigntist parties, which together won over one‐third of the vote. The Constitutional Court's annulment of the first round of presidential elections in December allowed for new ...
LAVINIA STAN, RAZVAN ZAHARIA
wiley   +1 more source

The Downward Spiral of Legitimacy Erosion: Lessons on Network Governance Failure During the German “Refugee Crisis”

Public Administration Review, EarlyView.
ABSTRACT Organizational legitimacy is essential for effective crisis governance. This study analyzes the rapid erosion of legitimacy faced by the German State Office for Health and Social Affairs (LAGeSo) during the 2015 refugee crisis, triggering cascading failures in public service delivery.
Iris Seidemann, Kristina S. Weißmüller, Daniel Geiger   +2 more
wiley   +1 more source

Shuttle Propulsion Overview - The Design Challenges [PDF]

, 2011
The major elements of the Space Shuttle Main Propulsion System include two reusable solid rocket motors integrated into recoverable solid rocket boosters, an expendable external fuel and oxidizer tank, and three reusable Space Shuttle Main Engines.
Owen, James W.
core   +1 more source