Results 121 to 130 of about 330,769 (355)
Impact of Spraying Sprouts Extracts on the Performance of Mango Trees under Desert Land Conditions
Journal of Scientific Research in ScienceThe study occurred in 2023 and 2024 on mango trees cv. keitt at Abo Ghaleb Road (Alexandria Desert Road, 68 km, Cairo, Egypt) in Giza Governorate, Egypt.
Sheren A. Abd El-Hamied +1 more
doaj +1 more source
Local Responses to Limits on U.S. Public Health Authority During the COVID‐19 Emergency
The International Journal of Health Planning and Management, EarlyView.ABSTRACT Public health has become politicized in the U.S. Though research shows that limiting public health authority during emergency response puts community wellbeing and health outcomes at risk, during the COVID‐19 emergency (2020–2021), some U.S. state policymakers limited the disease‐preventing actions local public health agencies could take. This
Genevive R. Meredith +6 more
wiley +1 more source
Channel-type shell construction for rocket engines and the like Patent [PDF]
, 1964 Channel-type shell construction for rocket engines and related ...
Baehr, E. F.
core +1 more source
Dynamical systems approach to study thermoacoustic transitions in a liquid rocket combustor.
Chaos, 2019 Liquid rockets are prone to large amplitude oscillations, commonly referred to as thermoacoustic instability. This phenomenon causes unavoidable developmental setbacks and poses a stern challenge to accomplish the mission objectives.
Praveen Kasthuri +5 more
semanticscholar +1 more source
Trace MA+ Accelerates the Degradation of Perovskite Solar Cells at Elevated Temperatures
Information &Functional Materials, EarlyView.We investigate how the A‐site cation influences the morphology and optoelectronic properties of perovskite films, and consequently, the operational stability of devices under continuous light illumination at elevated temperature. ABSTRACT Methylammonium (MA+) is the most widely adopted A‐site cation for high‐efficiency perovskite solar cells.
Jiazheng Zhou +11 more
wiley +1 more source
Injector element characterization methodology [PDF]
Characterization of liquid rocket engine injector elements is an important part of the development process for rocket engine combustion devices. Modern nonintrusive instrumentation for flow velocity and spray droplet size measurement, and automated ...
Cox, George B., Jr.
core +1 more source
Approximate theoretical performance evaluation for a diverging rocket [PDF]
, 1960 A simplified combustion model, which is motivated by available performance studies on the diverging rocket reactor, has been used as basis for an engine performance evaluation.
Eckel, E. F. +3 more
core
International Journal of Finance &Economics, EarlyView.ABSTRACT This article investigates whether the unconventional monetary policy (UMP) measures pursued by the Federal Reserve, the Bank of England, the Bank of Japan, and the European Central Bank since the Global Financial Crisis (GFC) are associated with an appetite for cryptocurrency.
Niamh Wylie, Martha O'Hagan‐Luff
wiley +1 more source
Protective coating for refractory metals in rocket engines supplemental report, mar. 8, 1963 - mar. 15, 1964 [PDF]
Protective coating systems for refractory metal used in rocket engine nozzles - rocket engine test ...
core +1 more source