Results 91 to 100 of about 2,661 (278)

Design and Experimental Study of Pressure Maintenance and Temperature Control System for Hydrate Pressure Core Processing Device

Energy Science &Engineering, EarlyView.
This paper presents a hydrate pressure core processing device integrated with a high‐precision active control system to perform nondestructive transfer, cutting, and analysis. To address the limitations of slow dynamic response and high thermal inertia in traditional passive systems, a differentiated control scheme is implemented.
Liwen Nan, Jiawang Chen, Qiaoling Gao, Yingjie Liu   +3 more
wiley   +1 more source

Magnetically Coupled Free Piston Stirling Generator for Low Temperature Thermal Energy Extraction Using Ocean as Heat Sink

Journal of Marine Science and Engineering
The ocean, as one of the largest thermal energy storage bodies on earth, has great potential as a thermal-electric energy reserve. Application of the relatively fixed-temperature ocean as the heat sink, and using concentrated solar energy as the heat ...
Hao Tian, Zezhong Gao, Yongjun Gong
doaj   +1 more source

Ensuring Steady Operation of Free-Piston Generator [PDF]

Journal of Systemics, Cybernetics and Informatics, 2006
This paper describes Free-Piston Generator (FPG) model and its control for achieving steady operation. A FPG is a special type of combustion engine representing a new approach concerning the conversion of the chemical energy of hydrocarbon fuel into ...
Pavel Nemecek
doaj  

β Style Free-Piston Stirling Engine Control System Research

MATEC Web of Conferences, 2016
For the Free-Piston Stirling Engines (FPSE) control system, a three -phase bridge circuit is reused as the system output about rectifier and start inverter.
Xu Jian, Zhang Yongsheng
doaj   +1 more source

Obstetrics and gynecology devices designed for low‐ and middle‐income countries: A narrative review

International Journal of Gynecology &Obstetrics, Volume 169, Issue 1, Page 71-80, April 2025.
Abstract There are many barriers contributing to poor health outcomes for women in low‐ and middle‐income countries (LMICs), one of which is the lack of necessary medical devices. Presently, the development of various kinds of devices intended to improve women's health outcomes specifically in LMICs remains underrepresented in the literature; therefore,
Dhanalakshmi Thiyagarajan, Enaam A. Adanu, K. Rivet Amico   +2 more
wiley   +1 more source

Study on the Influence of Diesel Fuel Substitution Ratio on the Characteristics of Dual-Fuel Free-Piston Engines

Applied Sciences
The diesel substitution ratio is a key parameter influencing the combustion characteristics and energy conversion efficiency of hydrogen diesel dual-fuel free-piston engines.
Zhaoju Qin, Zhiao Zhang, Weihong Weng, Chenyang Yin, Zhen Han, Weizheng Zhang   +5 more
doaj   +1 more source

Implantable drug delivery system: Frontiers of medicine‐engineering interdisciplinary

Interdisciplinary Medicine, EarlyView.
This review systematically summarizes the driving mechanisms of implantable on‐demand drug delivery systems (IDDS), including endogenous, exogenous, and closed‐loop strategies. It highlights the pivotal roles of flexible electronics and miniaturization in enhancing the tissue conformity and spatial adaptability.
Yu Zeng, Rongtai Su, Manyu Zhao, Xin Song, Ran Liu, Yuhao Zhou, Chaojuan Yang, Yanli Jiao, Xiao‐Wei Xiang, Lingqian Chang   +9 more
wiley   +1 more source

Demonstration of a free piston Stirling engine driven linear alternator, phase I report

, 1977
The results of the work performed under Phase I of the free piston Stirling engine demonstrator program are described. The objective of the program is to develop a 2 kW free piston Stirling engine/linear alternator energy conversion system, for an ...
S. Piller, B. Goldwater, Goldwater, B., Rauch, J., Cella, A., A. Cella, Piller, S., J. Rauch   +7 more
core   +1 more source

Bed‐level tools for monitoring erosion and accretion patterns: Flume validation and field testing

Limnology and Oceanography: Methods, EarlyView.
Abstract Monitoring short‐term changes in surface sediment elevation is fundamental to understanding erosion, transport, and deposition dynamics in shallow coastal environments. However, commonly used field approaches, such as horizontal markers, sediment erosion tables, subsurface sediment plates, or erosion pins, are not always cross‐validated under ...
Lucía Rodríguez‐Arias, Inés Mazarrasa, Beatriz Marin‐Diaz, Teresa Alcoverro, Barbara Ondiviela, Jordi F. Pagès, Eduardo Infantes   +6 more
wiley   +1 more source

Realization of a Novel Free-Piston Engine Generator for Hybrid-Electric Vehicle Applications. [PDF]

Energy Fuels, 2020
Smallbone A, Hanipah MR, Jia B, Scott T, Heslop J, Towell B, Lawrence C, Roy S, Shivaprasad KV, Roskilly AP.   +9 more
europepmc   +1 more source