Results 1 to 10 of about 3,009 (150)
Aerobic capacity and cardiopulmonary variables are not different between premenopausal, late premenopausal, perimenopausal, and postmenopausal women [PDF]
Physiological ReportsMenopause may contribute to declining aerobic capacity alongside aging; whether this is related to declines in physical activity or alterations in physiology is unclear.
Catherine A. Rattley +6 more
doaj +3 more sources
Applied Sciences (Switzerland), 2022 This paper compares various optimization techniques and objective functions to obtain optimum rocket engine performances. This research proposes a modular optimization framework that provides an optimum design for Gas Generator (GG) and Staged Combustion
Suniya Sadullah Khan +2 more
exaly +4 more sources
LPRE estimation for functional multiplicative model and optimal subsampling. [PDF]
J Appl StatIn this paper, we study the functional linear multiplicative model based on the least product relative error criterion. Under some regularization conditions, we establish the consistency and asymptotic normality of the estimator. Further, we investigate the optimal subsampling for this model with massive data.
Yan Q, Li H.
europepmc +3 more sources
UPF1 plays critical roles in early B cell development [PDF]
Nature CommunicationsThe ATP-dependent RNA helicase UPF1 plays a crucial role in various mRNA degradation pathways, most importantly in nonsense-mediated mRNA decay (NMD). Here, we show that UPF1 is upregulated during the early stages of B cell development and is important ...
Noriki Iwai +6 more
doaj +2 more sources
Qualitative, Quantitative, In Vitro Antioxidant Activity and Chemical Profiling of Leptadenia pyrotechnica (Forssk.) Decne Using Advanced Analytical Techniques [PDF]
AntioxidantsLeptadenia pyrotechnica Forssk. Decne (LP) is a medicinal herb from the Asclepiadaceae family with many advantageous properties. The goal of this research is to identify, quantify, and evaluate the antioxidant potential of LP to validate its remarkable ...
Divya Kumari +4 more
doaj +2 more sources
Fault Diagnosis of LPRE Ground-testing Bed Based on PCA-SOM
International Journal of Hybrid Information Technology, 2014 To effectively diagnose the deterministic faults of a LPRE ground-testing bed, the fault diagnosis method based on PCA and SOM is proposed. The dimension reduction process of PCA not only reduces data size, but also reduces noise influence. It also implements a visualization of fault status identification and fault variable orientation by SOM ...
exaly +2 more sources
MachinesBall bearings are one of the most critical components of rotating machines. They ensure shaft support and friction reduction, thus their malfunctioning directly affects the machine’s performance.
Federica Galli +5 more
doaj +3 more sources
Upper Stage Liquid Propellant Rocket Engine: A Case Analysis [PDF]
Journal of Aerospace Technology and Management, 2021 This paper provides an overview of the design and development process for the L75 liquid propellant rocket engine (LPRE) foreseen as upper stage of a satellite launch vehicle application.
Daniel Soares de Almeida +2 more
doaj +3 more sources
Aerospace, 2023 This study presents an optimal design approach of a pintle injector for a deep throttlable liquid-propellant rocket engine (LPRE). Even though the pintle injector is used in rocket engines, it has become more important since reusable launch vehicles ...
Jihyoung Cha +2 more
doaj +1 more source
LPRE: Logarithmic Posit-enabled Reconfigurable edge-AI Engine
2025 IEEE International Symposium on Circuits and Systems (ISCAS)Gopal Raut, Santosh Kumar Vishvakarma
exaly +2 more sources