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Academic Articles & Research Papers
Showing 20 of 872 academic articles
Rui-lin Liu, Zhong-jie Zhang, Yu-fei Jiao, Chun-hao Yang et al. • International Journal of Aerospace Engineering
(2019)
The engine performance test at altitudes of 0-7000 m was carried out on the high-performance test bench of the Unmanned Aerial Vehicle (UAV) piston engine. The flight performance of UAV was studied, including propeller thrust characteristic...
DOAJ
Open Access (DOAJ)
DOI: 10.1155/2019/6282451
Rong Wang, Yuxuan Cao, Jianye Liu, Zhi Xiong • International Journal of Aerospace Engineering
(2020)
An aerospace vehicle in high-speed flight involves distributed multiple fields of view (FoVs) of a star sensor, and the maneuvering of the vehicle requires inertial-aided star pattern matching. Accordingly, an inertial-aided star pattern ma...
DOAJ
Open Access (DOAJ)
DOI: 10.1155/2020/2676210
Giulia Pascoletti, Filippo Cianetti, Giovanni Putame, Mara Terzini et al. • Frontiers in Bioengineering and Biotechnology
(2018)
The Marchetti-Vicenzi's nail is an intramedullary device where six curved nails are kept straight by a closing ring in order to allow their insertion into the medullary canal of a long bone; in a following step, these nails stabilize the fr...
DOAJ
Open Access (DOAJ)
DOI: 10.3389/fbioe.2018.00174
Yu Wang, Kun Zhou • Green Energy & Environment
(2022)
Two-dimensional (2D) materials have exhibited great potential for replacing costly Pt for oxygen reduction reaction (ORR) because of their distinctive structural features and high pre-site activity. However, their performance is generally h...
DOAJ
Open Access (DOAJ)
DOI: 10.1016/j.gee.2020.11.003
Meiling Zhou, Linlin Lu, Huadong Guo, Qihao Weng et al. • Remote Sensing
(2021)
Sustainable development in urban areas is at the core of the implementation of the UN 2030 Agenda and the Sustainable Development Goals (SDG). Analysis of SDG indicator 11.3.1—Land-use efficiency based on functional urban boundaries—provide...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/rs13152850
Thenmozhi D, M. Eswara Rao, Ch. Nagalakshmi, RLV.Renuka Devi et al. • International Journal of Thermofluids
(2024)
The current study presents a novel examination of heat transfer properties in a magnetohydrodynamic (MHD) flow of Casson fluid across a porous stretching sheet, uniquely incorporating the effects of heat source and variable viscosity. Unlik...
DOAJ
Open Access (DOAJ)
DOI: 10.1016/j.ijft.2024.100804
Miisa J. Tavaststjerna, Stephen J. Picken, Santiago J. Garcia • Advanced Materials Interfaces
(2025)
Abstract Micropatterned surfaces with both hydrophilic and hydrophobic regions are relevant for a wide range of applications from fuel cells to water harvesting systems. The preferential nucleation of water on hydrophilic regions can also b...
DOAJ
Open Access (DOAJ)
DOI: 10.1002/admi.202400838
Michal Elkind, Itamar Cohen, David Blackman, Talia Meir et al. • Scientific Reports
(2023)
Abstract Intense laser fields interact very differently with micrometric rough surfaces than with flat objects. The interaction features high laser energy absorption and increased emission of MeV electrons, ions, and of hard x-rays. In this...
DOAJ
Open Access (DOAJ)
DOI: 10.1038/s41598-023-48866-z
Mohamed Afifi, Mohamed Afifi, Muhammad Uba Abdulazeez, Muhammad Uba Abdulazeez et al. • Frontiers in Bioengineering and Biotechnology
(2025)
Road traffic crashes are the leading cause of injuries, disabilities, and fatalities for children and young adults. Extremity joint injuries have been identified as one of the contributing factors to chronic disabilities among children in r...
DOAJ
Open Access (DOAJ)
DOI: 10.3389/fbioe.2025.1667865
Han Xiao, Han Xiao, Xiaoqian Zhang, Xiaoqian Zhang et al. • Frontiers in Environmental Science
(2022)
Forest disturbance monitoring can provide scientific data for the decision making and management of nature reserves. LandTrendr algorithm has been applied to identify forest disturbances on a long-time scale through appropriate segmentation...
DOAJ
Open Access (DOAJ)
DOI: 10.3389/fenvs.2022.891752
Yongbai Sha, Donghe Han, Donghu Chen, Congzhi Liu • Machines
(2024)
The iron roughneck is an automated piece of equipment utilized for the connection and removal of drilling tools. This paper presents the design of an integrated iron roughneck, providing a detailed introduction to its clamp body structure, ...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/machines12080575
LIU Jianxing, ZHANG Ouyang, MA Xiaolong, CHEN Meng et al. • Nanjing Hangkong Hangtian Daxue Xuebao
(2026)
Free-floating space robots （FFSRs） have emerged as critical unmanned platforms for long-term in-orbit services thanks to their high mobility and extended operational lifespan. However， external disturbances caused by dynamic space environme...
DOAJ
Open Access (DOAJ)
DOI: 10.16356/j.2097-6771.2026.01.015
Mohammad M. Maneshi, Mohammad M. Maneshi, Frederick Sachs, Susan Z. Hua et al. • Frontiers in Cellular Neuroscience
(2018)
Mechanical perturbations increase intracellular Ca2+ in cells, but the coupling of mechanical forces to the Ca2+ influx is not well understood. We used a microfluidic chamber driven with a high-speed pressure servo to generate defined fluid...
DOAJ
Open Access (DOAJ)
DOI: 10.3389/fncel.2018.00069
Shurui Huang, Yueneng Yang, Ye Yan, Shifeng Zhang et al. • International Journal of Aerospace Engineering
(2022)
The stratospheric satellite is regarded as an ideal stratosphere flight platform and is able to accomplish various missions such as surveillance, earth observation, and remote sensing, which requires a robust and effective trajectory tracki...
DOAJ
Open Access (DOAJ)
DOI: 10.1155/2022/1601771
Yaqiong Zhang, Fubin Wang, Jinchao Liu, Heng Zhao et al. • Aerospace
(2024)
The rotating blade is a key component of an aero-engine, and its vibration characteristics have an important impact on the performance of the engine and are vital for condition monitoring. This paper reviews the research progress of blade d...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/aerospace11080638
Shuanming Li, Yi Lu • Risks
(2018)
This paper studies the moments and the distribution of the aggregate discounted claims (ADCs) in a Markovian environment, where the claim arrivals, claim amounts, and forces of interest (for discounting) are influenced by an underlying Mark...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/risks6020059
Džiugas Chvoinikov, Svyatoslav Novikov, Jonas Šiaulys • Axioms
(2026)
We investigate the asymptotic behavior of the product of Gaussian random variables, with a focus on tail probabilities. Although sums of normal variables are well understood through classical limit theorems, their products exhibit significa...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/axioms15060425
L. Lee Grismer • Vertebrate Zoology
(2021)
Abstract It is hypothesized that shape differences between the closely related sandstone night lizard (Xantusia gracilis) and the granite night lizard (X. henshawi) may be correlated with structual differences in their respec...
DOAJ
Open Access (DOAJ)
DOI: 10.3897/vz.71.e69214
Eric D. Roy, Eric D. Roy, Eric D. Roy, Mohamed Esham et al. • Frontiers in Sustainable Food Systems
(2021)
Sustainable management of municipal solid waste (MSW) is a critical issue around the world, especially in South Asia where waste generation is expected to double by 2050. Closing the food-nutrient cycle through composting biodegradable MSW ...
DOAJ
Open Access (DOAJ)
DOI: 10.3389/fsufs.2021.748391
Xu‐Sheng Chen, Ran Hu, Chen‐Xing Zhou, Yang Xiao et al. • Water Resources Research
(2024)
Abstract Salt precipitation is a crucial process occurring during CO2 injection into saline aquifers. It significantly alters the porous space, leading to reduced permeability and impaired injectivity. While the dynamics of precipitation ha...
DOAJ
Open Access (DOAJ)
DOI: 10.1029/2023WR035451