Results 61 to 70 of about 106,245 (282)

Validating an Atmospheric Absorption Model through Solar Instrumentation on Sounding Rockets

open access: yesThe Astrophysical Journal
Extreme-ultraviolet and X-ray data taken from suborbital sounding rocket platforms are affected by atmospheric absorption. The absorption correction factor varies with time, launch location, launch profile, and atmospheric conditions.
Nicolas G. Donders   +5 more
doaj   +1 more source

D region observations by VHF and HF radars during a rocket campaign at Andøya dedicated to investigations of PMWE [PDF]

open access: yesAdvances in Radio Science, 2019
In April 2018 the PMWE1 sounding rocket campaign was conducted at the Andøya Space Center involving coordinated measurements with rockets and ground instruments to measure parameters relevant for testing of the existing theories of polar mesospheric ...
R. Latteck, T. Renkwitz, B. Strelnikov
doaj   +1 more source

Degradation kinetics of postharvest quality attributes of rocket leaves grown under different nitrogen rates

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Diplotaxis tenuifolia L. cv Dallas (rocket leaves) is one of the most widely consumed fresh‐cut salad vegetables in Europe, especially in southern Italy, being appreciated for its pungent taste and health promoting phytochemicals. However, its short postharvest shelf‐life is still a major drawback.
Aysha Saleem   +5 more
wiley   +1 more source

Cervical Inlet Patches in R‐CPD: An Unrecognized Predictor of Treatment Failure

open access: yesThe Laryngoscope, EarlyView.
This retrospective cohort study identified cervical inlet patches (CIP) in 19.8% of patients undergoing cricopharyngeal botulinum toxin injection for R‐CPD. CIP presence and increasing age independently predicted failure to sustain a long‐term treatment response, suggesting that CIP may be an underrecognized factor in R‐CPD treatment durability ...
Andrew Geoffrey Tritter   +2 more
wiley   +1 more source

Sessile volatile drop evaporation under microgravity

open access: yesnpj Microgravity, 2020
The evaporation of sessile drops of various volatile and non-volatile liquids, and their internal flow patterns with or without instabilities have been the subject of many investigations. The current experiment is a preparatory one for a space experiment
Sanjeev Kumar   +3 more
doaj   +1 more source

First 20 Years of Orbitrap Mass Spectrometry as the Mainstream Analytical Technique

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT This review traces the first 20 years of Orbitrap mass spectrometry as a mainstream high‑resolution and accurate‑mass (HR/AM) technology. It outlines the historical development of the Orbitrap analyzer, the evolution of major instrument families, and the key technological innovations that enabled its widespread adoption. Particular emphasis is
Alexander Makarov
wiley   +1 more source

An X-ray Experiment with Two-Stage Korean Sounding Rocket [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
The test result of the X-ray observation system is presented which have been developed at Korea Astronomy Observatory for 3 years (1995-1997). The instrument, which is composed of detector and signal processing parts, is designed for the future ...
Uk-Won Nam, Chul-Sung Choi
doaj  

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori   +1 more
wiley   +1 more source

Preliminary Study of Launch and Orbit of a CubeSat Using a Modified VSB-30 Launcher Vehicle

open access: yesJournal of Aerospace Technology and Management, 2020
During the last decade, the world faced the mass insertion of small satellites in the space technology scenario. Every year, the number of micro and nanosatellites launched increases and gets more attention from players in the space market.
Artur Gustavo Slongo   +6 more
doaj  

Sounding Rocket Preliminary Design

open access: yesEuropean Journal of Engineering and Technology Research, 2021
This article aims at studying sounding rocket (SR) class, or those vehicles launched from the earth and carrying out various experiments at high altitudes. After the end of their mission, rockets should deliver a payload to a given point or to give range. In general, design tasks are divided into direct and inverse ones.
openaire   +3 more sources

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