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21,754 Results Found

  • Article
  • Open Access
11 Citations
4,463 Views
16 Pages

Application of the Segregation Potential Model to Freezing Soil in a Closed System

  • Xiyan Zhang,
  • Yu Sheng,
  • Long Huang,
  • Xubin Huang and
  • Binbin He

28 August 2020

Previous studies have shown that an accurate prediction of frost heaves largely depends on the pore water pressure and hydraulic conductivity of frozen fringes, which are difficult to determine. The segregation potential model can avoid this problem;...

(This article belongs to the Section Hydraulics and Hydrodynamics)
  • Article
  • Open Access
845 Views
24 Pages

21 April 2026

Piston engine system identification models are crucial for autonomous and control-oriented applications. However, piston engines exhibit relatively unstable behavior, which may lead to overspeed during open-loop operation. In this study, system ident...

(This article belongs to the Special Issue Advanced Control Systems and Control Engineering)
  • Review
  • Open Access
2 Citations
2,010 Views
25 Pages

A Green Energy Closed-Loop System Based on Aluminum

  • Hong-Wen Wang and
  • Liang-Ying Huang

5 February 2026

This paper presents a focused review of a closed-loop system for sustainable hydrogen production utilizing the reaction between metallic aluminum powders and water, coupled with renewable energy-driven recycling of aluminum hydroxide (or alumina) byp...

(This article belongs to the Special Issue Simulation and Optimisation for Operational Decision-Making in Renewable Energy Supply Chains and Systems)
  • Review
  • Open Access
34 Citations
23,911 Views
14 Pages

Many medication errors in the hospital setting are due to manual, error-prone processes in the medication management system. Closed-loop Electronic Medication Management Systems (EMMSs) use technology to prevent medication errors by replacing manual...

(This article belongs to the Section Digital Health)
  • Article
  • Open Access
25 Citations
4,654 Views
18 Pages

Fault Identification for a Closed-Loop Control System Based on an Improved Deep Neural Network

  • Bowen Sun,
  • Jiongqi Wang,
  • Zhangming He,
  • Haiyin Zhou and
  • Fengshou Gu

8 May 2019

Fault identification for closed-loop control systems is a future trend in the field of fault diagnosis. Due to the inherent feedback adjustment mechanism, a closed-loop control system is generally very robust to external disturbances and internal noi...

(This article belongs to the Section Physical Sensors)
  • Article
  • Open Access
8 Citations
3,101 Views
13 Pages

6 May 2020

In this short article, we present a study of theoretical model of a photochemically driven, closed chemical system in which spontaneous chiral symmetry breaking occurs. By making all the steps in the reaction elementary reaction steps, we obtained th...

(This article belongs to the Special Issue Asymmetry in Biological Homochirality)
  • Article
  • Open Access
28 Citations
6,942 Views
15 Pages

Absolute Stability Condition Derivation for Position Closed-Loop System in Hydraulic Automatic Gauge Control

  • Yong Zhu,
  • Shengnan Tang,
  • Chuan Wang,
  • Wanlu Jiang,
  • Jianhua Zhao and
  • Guangpeng Li

18 October 2019

In the metallurgical industry, hydraulic automatic gauge control (HAGC) is a core mechanism for thickness control of plates used in the rolling process. The stability of the HAGC system’s kernel position closed-loop is key to ensuring a process...

(This article belongs to the Special Issue Smart Flow Control Processes in Micro Scale)
  • Article
  • Open Access
1 Citations
1,375 Views
26 Pages

A Control Method for Surge Prevention Under Load Disturbances in Closed Brayton Cycle TAC System

  • Haosen Liu,
  • Yuxuan Sun,
  • Qingqing Fang,
  • Fangnan Huang,
  • Jun Yu,
  • Xiangrong Tang and
  • Qian Ning

26 August 2025

In closed Brayton cycle power generation systems, sudden load disturbances can induce a compressor surge in turbine–alternator–compressor systems, posing significant risks to dynamic stability and operational reliability. To address this...

(This article belongs to the Section I: Energy Fundamentals and Conversion)
  • Article
  • Open Access
7 Citations
3,336 Views
13 Pages

10 September 2020

The use of seawater desalination technology to solve water shortages in energy- and resource-scarce regions has attracted widespread attention worldwide. In this paper, the performance of a closed-cycle humidification–dehumidification desalinat...

(This article belongs to the Special Issue Design, Control and Optimization of Desalination Processes)
  • Article
  • Open Access
3 Citations
2,291 Views
11 Pages

Optical Bubble Microflow Meter for Continuous Measurements in a Closed System

  • Michał Rosiak,
  • Bartłomiej Stanisławski and
  • Mariusz Kaczmarek

This paper describes the design, operation and test results of a simple microprocessor-based device for measuring slow liquid flows. The device uses a module of 30 digital optical sensors to track the movement of a single air bubble inserted into a t...

(This article belongs to the Special Issue Section Collection Series: Recent Advances in Optoelectronics from Lab to Industry)
  • Article
  • Open Access
1 Citations
5,285 Views
16 Pages

1 June 2015

The Aharonov-Vaidman gauge additively transforms the mean energy of a quantum mechanical system into a weak valued system energy. In this paper, the equation of motion of this weak valued energy is used to provide a mathematical statement of an exten...

(This article belongs to the Special Issue Mathematical physics)
  • Article
  • Open Access
1 Citations
2,366 Views
17 Pages

23 September 2024

Spray drying is an energy-intensive process in industrial use, making energy recovery a critical focus for improving overall efficiency. This study investigates the potential of integrating heat-recovery systems, including an innovative air reheater,...

(This article belongs to the Special Issue Thermal Science and Engineering Applications)
  • Article
  • Open Access
2 Citations
2,333 Views
22 Pages

Performance Evaluation of Closed Crankcase Ventilation System in an Industrial NG Engine

  • Arturo Quintero Castillo,
  • Juan Felipe Rodríguez,
  • Bret Windom and
  • Daniel B. Olsen

19 August 2025

This study evaluates the impact of a Closed Crankcase Ventilation (CCV) system on Caterpillar G3516J NG engine performance and emissions, focusing on engine performance, methane (CH4) emissions, oil consumption, and oil particle size distribution. Th...

(This article belongs to the Special Issue Advanced Research on Internal Combustion Engines and Engine Fuels—2nd Edition)
  • Article
  • Open Access
31 Citations
10,824 Views
15 Pages

Efficiency Analysis of the Main Components of a Vertical Closed-Loop System in a Borehole Heat Exchanger

  • Cristina Sáez Blázquez,
  • Arturo Farfán Martín,
  • Ignacio Martín Nieto,
  • Pedro Carrasco García,
  • Luis Santiago Sánchez Pérez and
  • Diego González-Aguilera

10 February 2017

In vertical closed-loop systems, it is common to use single or double U-tube heat exchangers separated by longitudinal spacers. In addition, the helical-shaped pipe is another configuration that requires lower drilling lengths but it is less used. Th...

(This article belongs to the Special Issue Low Enthalpy Geothermal Energy)
  • Feature Paper
  • Article
  • Open Access
13 Citations
8,357 Views
19 Pages

A Wearable Closed-Loop Insulin Delivery System Based on Low-Power SoCs

  • Jesús Berián,
  • Ignacio Bravo,
  • Alfredo Gardel,
  • José Luis Lázaro and
  • Sergio Hernández

The number of patients living with diabetes has increased significantly in recent years due to several factors. Many of these patients are choosing to use insulin pumps for their treatment, artificial systems that administer their insulin and consist...

(This article belongs to the Special Issue Low-power Wearable Healthcare Sensors)
  • Article
  • Open Access
10 Citations
6,502 Views
10 Pages

This study, conducted in a centralized cytotoxic drug preparation unit, analyzes the effectiveness of two closed system drug transfer devices (CSTDs) in reducing leakage during antineoplastic drug compounding. Wipe/pad samplings inside and outside th...

(This article belongs to the Special Issue Prevention of Occupational Risks)
  • Article
  • Open Access
1 Citations
1,900 Views
24 Pages

Self-Oscillating Converter Based on Phase Tracking Closed Loop for a Dynamic IPT System

  • Lin Chen,
  • Daqing Luo,
  • Jianfeng Hong,
  • Mingjie Guan and
  • Wenxiang Chen

10 April 2024

The coupling of converters with resonant networks poses significant challenges for frequency tracking and power control in inductive power transfer (IPT) systems. This paper presents an implementation method that addresses these issues by dividing th...

(This article belongs to the Special Issue Energy, Electrical and Power Engineering 2024)
  • Feature Paper
  • Article
  • Open Access
1 Citations
1,436 Views
17 Pages

21 November 2023

Considering the stability and safety of industrial production, the open-loop system cannot meet the requirements of industrial production, so more and more attention has been paid to multivariable closed-loop system identification. This study focuses...

(This article belongs to the Section Process Control, Modeling and Optimization)
  • Article
  • Open Access
251 Views
19 Pages

Reliability Test of Closed Crankcase Ventilation System in Industrial NG Lean Burn Engine

  • Arturo Quintero Castillo,
  • Juan Felipe Rodríguez,
  • Bret Windom and
  • Daniel B. Olsen

27 September 2026

This study evaluates the reliability of a Closed Crankcase Ventilation (CCV) system installed on a Caterpillar G3516ULB four-stroke lean-burn natural gas (NG) industrial engine. A year of testing was conducted at a compressor station in Fort Lupton,...

(This article belongs to the Special Issue Advanced Energy Technologies and Energy Savings: Low Emissions and High Efficiency—2nd Edition)
  • Article
  • Open Access
14 Citations
6,335 Views
16 Pages

5 June 2022

Traditional construction machinery’s full hydraulic steering system has high energy consumption. An electro-hydraulic flow matching steering system for electric wheel loaders based on closed-circuit pump control is proposed to solve the proble...

  • Article
  • Open Access
7 Citations
4,228 Views
16 Pages

9 February 2020

A lake is one of the geothermal energy sources to meet increasing demands for renewable energy use. In this study, a series of numerical modeling was performed to evaluate the applicability of a close-loop lake water heat pump (LWHP) system in Lake S...

(This article belongs to the Section H: Geo-Energy)
  • Feature Paper
  • Article
  • Open Access
2 Citations
1,717 Views
18 Pages

16 May 2025

This study proposes an innovative model for animal waste utilization in the largest Polish meat utilization plant, which assumes an integrated system that processes one part of the meat waste by anaerobic digestion and the second part into meat and b...

  • Article
  • Open Access
12 Citations
4,644 Views
26 Pages

Performance Analysis and Improvement of the Bike Sharing System Using Closed Queuing Networks with Blocking Mechanism

  • Bacem Samet,
  • Florent Couffin,
  • Marc Zolghadri,
  • Maher Barkallah and
  • Mohamed Haddar

7 December 2018

The Bike Sharing System is a sustainable urban transport solution that consists of a fleet of bikes placed in various stations. Users will be satisfied if they find available bikes at their departure station and free docks at the destination. Despite...

(This article belongs to the Special Issue Decision Support Systems for Urban Logistics Planning: Multi-Stakeholder and Participative Approaches)
  • Article
  • Open Access
29 Citations
11,398 Views
17 Pages

The photovoltaic (PV) generation system has been widely used since the late 1990s. Considering its lifespan of 20 to 30 years, many end-of-life systems will emerge in the near future. This is why recycling PV systems will be beneficial (and may even...

(This article belongs to the Special Issue Eco-innovation and Competitiveness)
  • Article
  • Open Access
770 Views
27 Pages

9 July 2026

The increasing amount of detailed learning data in higher education has shifted assessment methods from traditional scores to continuous assessment of student learning performance. This paper presents an applied closed-loop AI system that supports ea...

(This article belongs to the Special Issue Innovative Applications of Artificial Intelligence in Education)
  • Proceeding Paper
  • Open Access
211 Views
12 Pages

11 September 2026

This study presents a displacement feasibility methodology for a closed-center load-sensing hydraulic system intended for industrial forklift applications. The approach combines analytical hydraulic calculations with simulation-based verification in...

(This article belongs to the Proceedings of The International Conference on Electronics, Engineering Physics and Earth Science (EEPES2026))
  • Article
  • Open Access
62 Citations
8,969 Views
20 Pages

This paper deals with the optimization of a manufacturing–remanufacturing–transport–warehousing closed-loop supply chain, which is composed of two machines for manufacturing and remanufacturing, manufacturing stock, purchasing warehouse, transport ve...

(This article belongs to the Special Issue Sustainability in Supply Chain Management)
  • Article
  • Open Access
607 Views
25 Pages

16 March 2026

This paper addresses the stochastic optimal control of a closed-loop hybrid manufacturing–remanufacturing system (HMRS) operating under random machine failures and greenhouse gas (GHG) emission constraints in the context of sustainable industri...

(This article belongs to the Section Environmental Sustainability and Applications)
  • Article
  • Open Access
7 Citations
3,157 Views
15 Pages

28 October 2020

Aiming at the particularity of a multiple-stage closed-loop gear transmission system for 3D circular braiding machine, the model of gear transmission system in radial braiding machine was simplified. The non-linear dynamic equations of a n-elements c...

  • Article
  • Open Access
6 Citations
13,417 Views
13 Pages

Water bottles are widely used in the Gulf countries. One estimate indicates that the water bottle usage in the United Arab Emirates (UAE) may reach up to 250 L of water per person annually. Generally, the water bottles are made of polyethylene tereph...

  • Case Report
  • Open Access
13 Citations
2,390 Views
5 Pages

The Use of a Hybrid Closed-Loop System for Glycemic Control in Two Pediatric Patients with Type 1 Diabetes Undergoing Minor Surgery

  • Sebastian Seget,
  • Julia Włodarczyk,
  • Wanda Lutogniewska,
  • Ewa Rusak,
  • Maria Dróżdż and
  • Przemysława Jarosz-Chobot

15 February 2023

Technological progress in the treatment of type 1 diabetes requires doctors to use modern methods of insulin therapy in all areas of medicine that patients may come into contact with, including surgical interventions. The current guidelines indicate...

(This article belongs to the Section Perioperative Care)
  • Article
  • Open Access
4 Citations
2,646 Views
12 Pages

Closed-Loop Microbial Fuel Cell Control System Designed for Online Monitoring of TOC Dynamic Characteristics in Public Swimming Pool

  • Haishan Chen,
  • Xiaoping Meng,
  • Dianlei Liu,
  • Wei Wang,
  • Xiaodong Xing,
  • Zhiyong Zhang and
  • Chen Dong

Total organic carbon (TOC) in the water of public swimming pools (PSPs) must be monitored online for public health. In order to address the shortcomings of conventional microbial fuel cell biosensor (MFC-biosensor), an innovative biosensor with pecul...

(This article belongs to the Section Water Science and Technology)
  • Article
  • Open Access
4 Citations
2,038 Views
21 Pages

2 October 2024

Oil temperature plays a crucial role in hydraulic closed-circuit systems (HCS), and conventional thermal equilibrium models and coupled simulation models face challenges in terms of accuracy, efficiency, and cost when calculating oil temperature. Thi...

  • Article
  • Open Access
5 Citations
2,975 Views
25 Pages

12 August 2023

Due to their low cost, interference resistance, and concealment of vision sensors, vision-based landing systems have received a lot of research attention. However, vision sensors are only used as auxiliary components in visual landing systems because...

(This article belongs to the Special Issue When Deep Learning Meets Geometry for Air-to-Ground Perception on Drones)
  • Article
  • Open Access
3 Citations
977 Views
14 Pages

Dual-Closed-Loop Control System for Polysilicon Reduction Furnace Power Supply Based on Hysteresis PID and Predictive Control

  • Shihao Li,
  • Tiejun Zeng,
  • Shan Jian,
  • Guiping Cui,
  • Ziwen Che,
  • Genghong Lin and
  • Zeyu Yan

14 July 2025

In the power system of a polysilicon reduction furnace, especially during the silicon rod growth process, the issue of insufficient temperature control accuracy arises due to the system’s nonlinear and time-varying characteristics. To address t...

  • Article
  • Open Access
7 Citations
3,244 Views
10 Pages

Use of Advanced Hybrid Closed-Loop System during Pregnancy: Strengths and Limitations of Achieving a Tight Glycemic Control

  • Parthena Giannoulaki,
  • Evangelia Kotzakioulafi,
  • Alexandros Nakas,
  • Zisis Kontoninas,
  • Polykarpos Evripidou and
  • Triantafyllos Didangelos

1 March 2024

Background: Pregnant women with type 1 diabetes mellitus (T1DM) face an elevated risk of complications for both themselves and their newborns. Experts recommend strict glycemic control. The advanced hybrid closed-loop (AHCL) system, though not offici...

(This article belongs to the Special Issue Chronic Complications of Diabetes: Prevalence, Prevention and Management)
  • Article
  • Open Access
7 Citations
5,398 Views
16 Pages

4 August 2020

Background: To characterize the cellular composition (platelets, erythrocytes, and leukocytes) and determine platelet-derived growth factor isoform BB (PDGF-BB) concentration in canine leukocyte- and platelet rich plasma (L-PRP) produced using a comm...

(This article belongs to the Special Issue Regeneration in Animals)
  • Article
  • Open Access
2 Citations
2,940 Views
29 Pages

10 February 2023

Organization preference knowledge is critical to enhancing the intelligence and efficiency of the multi-platform aircraft mission system (MPAMS), particularly the collaboration tactics of task behaviors, platform types, and mount resources. However,...

(This article belongs to the Collection Avionic Systems)
  • Article
  • Open Access
2 Citations
3,860 Views
19 Pages

Modeling the Disorder of Closed System by Multi-Agent Based Simulation

  • Krzysztof Małecki,
  • Tomasz M. Gwizdałła and
  • Paweł Bieńko

12 November 2019

Mess (disorder)—there are many different meanings related to this problem. The explicit majority comes from the area of philosophical, social and medical sciences. In our paper, we try to present the engineering aspect of the concept of disorde...

(This article belongs to the Special Issue Computational and Statistical Physics Approaches for Complex Systems and Social Phenomena)
  • Article
  • Open Access
6 Citations
4,413 Views
12 Pages

Enhanced Sample Throughput Capillary Zone Electrophoresis with UV Detection in Hydrodynamically Closed System for Determination of Ibuprofen

  • Ondrej Stefanik,
  • Andrea Horniakova,
  • Ivana Cizmarova,
  • Michaela Matuskova,
  • Veronika Mikusova,
  • Peter Mikus and
  • Juraj Piestansky

A simple analytical approach based on capillary zone electrophoresis with ultraviolet detection and repeated sample injection strategy (applied in a hydrodynamically closed separation system for the first time) was developed for the determination of...

(This article belongs to the Section Analysis of Natural Products and Pharmaceuticals)
  • Article
  • Open Access
14 Citations
4,526 Views
16 Pages

Modeling Energy LED Light Consumption Based on an Artificial Intelligent Method Applied to Closed Plant Production System

  • Ernesto Olvera-Gonzalez,
  • Martín Montes Rivera,
  • Nivia Escalante-Garcia and
  • Eduardo Flores-Gallegos

18 March 2021

Artificial lighting is a key factor in Closed Production Plant Systems (CPPS). A significant light-emitting diode (LED) technology attribute is the emission of different wavelengths, called light recipes. Light recipes are typically configured in con...

(This article belongs to the Section Energy Science and Technology)
  • Article
  • Open Access
9 Citations
2,196 Views
19 Pages

An essential mathematical structure that demonstrates the nonlinear short-wave movement across the ferromagnetic materials having zero conductivity in an exterior region is known as the fractional stochastic Kraenkel–Manna–Merle system. I...

(This article belongs to the Special Issue Recent Advances in Computational Physics with Fractional Application, 2nd Edition)
  • Article
  • Open Access
17 Citations
3,129 Views
10 Pages

18 November 2022

Carbohydrate intake is one of the main determinants of glycemic control. In pregnancy, achievement of tight glycemic control is of utmost importance; however, data on the role of hybrid closed-loop systems (HCLs) in pregnancy are scarce. Therefore, w...

(This article belongs to the Special Issue Functional Foods and Diabetes)
  • Article
  • Open Access
4 Citations
3,027 Views
11 Pages

A Low-Temperature Heat Output Photoactive Material-Based High-Performance Thermal Energy Storage Closed System

  • Xiangyu Yang,
  • Shijie Li,
  • Jin Zhang,
  • Xiaomin Wang,
  • Yongzhen Wang and
  • Jianguo Zhao

16 March 2021

Designing and synthesizing photothermal conversion materials with better storage capacity, long-term stability as well as low temperature energy output capability is still a huge challenge in the area of photothermal storage. In this work, we report...

(This article belongs to the Special Issue Advanced Nanocomposites Materials Based on Graphene Oxide/Reduced Graphene Oxide: Potential Applications and Perspectives)
  • Article
  • Open Access
9 Citations
3,065 Views
13 Pages

Effect of Temperature on Corrosion Resistance of Layered Double Hydroxides Conversion Coatings on Magnesium Alloys Based on a Closed-Cycle System

  • Xiaochen Zhang,
  • Zhijuan Yin,
  • Bateer Buhe,
  • Jiajie Wang,
  • Lin Mao,
  • Bin Liu,
  • Peng Zhou,
  • Yang Zhao,
  • Tao Zhang and
  • Fuhui Wang

19 October 2021

The effect of temperature on the corrosion resistance of layered double hydroxide (LDH) conversion coatings on AZ91D magnesium alloy, based on a closed-cycle system, was investigated. Scanning electron microscopy (SEM), photoelectron spectroscopy (XP...

(This article belongs to the Special Issue Research Progress in the Microstructure and Mechanical Properties of Light Alloys)
  • Article
  • Open Access
8 Citations
7,105 Views
14 Pages

Development of Optimized Vitrification Procedures Using Closed Carrier System to Improve the Survival and Developmental Competence of Vitrified Mouse Oocytes

  • Jae Kyun Park,
  • Ju Hee Lee,
  • Eun A Park,
  • Hyunjung J. Lim,
  • Sang Woo Lyu,
  • Woo Sik Lee,
  • Jayeon Kim and
  • Haengseok Song

2 July 2021

The open carrier system (OC) is used for vitrification due to its high efficiency in preserving female fertility, but concerns remain that it bears possible risks of cross-contamination. Closed carrier systems (CC) could be an alternative to the OC t...

(This article belongs to the Section Reproductive Cells and Development)
  • Review
  • Open Access
5,221 Views
13 Pages

25 September 2025

Pregnancy in women with type 1 diabetes mellitus (T1DM) is associated with a high risk of maternal and perinatal complications, and achieving optimal glycaemic control remains a clinical challenge. This article presents a narrative review of the evid...

  • Article
  • Open Access
202 Views
19 Pages

3 October 2026

This paper addresses the vibration response produced at the supporting foundation by multiple low-frequency tonal components transmitted through magnetic bearing supports. A composite active magnetic bearing (AMB) control method is proposed in which...

(This article belongs to the Section Control Systems)
  • Article
  • Open Access
10 Citations
3,005 Views
22 Pages

26 August 2022

A systematic identification approach for the rotor/radial active magnetic bearing (rotor/RAMB) system is presented in this study. First, the system identification of the controller of commercial TMP is undertaken, and the corresponding linear dynamic...

(This article belongs to the Special Issue Advanced Materials and Technology Innovation in Machine System)
  • Article
  • Open Access
46 Citations
7,878 Views
20 Pages

27 November 2020

Understanding environmental factors is essential to maximizing the biomass production of plants. There have been many studies on the effects of the photosynthetic photon flux (PPF), photoperiod and air temperature as separate factors affecting plants...

(This article belongs to the Special Issue Cultivation of Horticultural and Medicinal Plants in the Greenhouse and in Plant Factory Systems)

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