Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Qingzhen ZHANG"'
Publikováno v:
Defence Technology, Vol 31, Iss , Pp 429-446 (2024)
This paper addresses a multicircular circumnavigation control for UAVs with desired angular spacing around a nonstationary target. By defining a coordinated error relative to neighboring angular spacing, under the premise that target information is p
Externí odkaz:
https://doaj.org/article/62aa364b875c41a1a70a32dc4ef55534
Publikováno v:
Pharmaceutics, Vol 16, Iss 1, p 68 (2023)
Agglomerate formulations for dry powder inhalation (DPI) formed with fine particles are versatile means for the highly efficient delivery of budesonide. However, uncontrolled agglomeration induces high deposition in the upper airway, causing local si
Externí odkaz:
https://doaj.org/article/91659a72c02c438bb324c43a7a5ab146
Publikováno v:
Chinese Journal of Mechanical Engineering, Vol 35, Iss 1, Pp 1-10 (2022)
Abstract Currently, the measurement methods for pneumatic system leakage include bubbling, ultrasonic, and pressure detection methods. These methods are sensitive to high-precision sensors, long detection times, and stable external environments. The
Externí odkaz:
https://doaj.org/article/b23aebae4a9344478b8e540a35da6fcb
Publikováno v:
Shiyou shiyan dizhi, Vol 43, Iss 5, Pp 871-879 (2021)
The characteristics and influencing factors of pore development in organic matters of shale are of great significance for shale gas exploration and production in China. The pore development in organic matters of shale has been found to be heterogeneo
Externí odkaz:
https://doaj.org/article/d36976cd31674f069c1498cade101890
Autor:
Le Zhang, Fulin Gao, Yamin Zhang, Pengjuan Hu, Yuping Yao, Qingzhen Zhang, Yan He, Qianlan Shang, Yi Zhang
Publikováno v:
Frontiers in Neurology, Vol 13 (2022)
BackgroundCognitive dysfunction in cerebral small vessel disease (CSVD) is a common cause of vascular dementia. The purpose of this study was to find independent risk factors for the development of cognitive dysfunction in patients with CSVD and esta
Externí odkaz:
https://doaj.org/article/49a2c3bb82dc48c6b7bb26a59632aae4
Publikováno v:
Shiyou shiyan dizhi, Vol 42, Iss 3, Pp 415-421 (2020)
A method for analyzing the pore connectivity of shale based on a suction experiment of tracer fluid is presented. Sodium chloraurate solution is absorbed into shale pores which have been previously evacuated, and then the solute in the pores is conve
Externí odkaz:
https://doaj.org/article/1c887dc185a74f83a554c9333876f89e
Publikováno v:
Aerospace, Vol 9, Iss 10, p 609 (2022)
The aero-engine is the heart of an aircraft; its performance deteriorates rapidly due to the high temperature and high-pressure environment during flights. It is necessary to predict the remaining useful life (RUL) to improve the reliability of aero-
Externí odkaz:
https://doaj.org/article/2569724e6f754e109388a05424d5d1e2
Publikováno v:
Chinese Journal of Mechanical Engineering, Vol 35, Iss 1, Pp 1-1 (2022)
Externí odkaz:
https://doaj.org/article/8091793d534b4aa183f0a87368b21e52
Publikováno v:
Machines, Vol 10, Iss 3, p 178 (2022)
Pneumatic transmission is a technology that uses compressed air as a power source to drive and control various mechanical equipment to realize the mechanization and automation of production processes. With the development of industrial mechanization
Externí odkaz:
https://doaj.org/article/79f9138c1361455ab4c38976c0f141f7
Autor:
Langfu Cui, Chaoqi Zhang, Qingzhen Zhang, Junle Wang, Yixuan Wang, Yan Shi, Cong Lin, Yang Jin
Publikováno v:
Aerospace, Vol 8, Iss 12, p 374 (2021)
There are some problems such as uncertain thresholds, high dimension of monitoring parameters and unclear parameter relationships in the anomaly detection of aero-engine gas path. These problems make it difficult for the high accuracy of anomaly dete
Externí odkaz:
https://doaj.org/article/8ba442dead7246159890fd0cd6735c99