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23 Results Found

  • Article
  • Open Access
9 Citations
3,182 Views
13 Pages

12 June 2020

The paper investigated studies on the application of pulsed electric fields for the treatment of liquid media in a continuous manner in a co-field treatment chamber with elliptic insulator profiles. The electric field distribution and the temperature...

  • Article
  • Open Access
3 Citations
2,463 Views
17 Pages

Experiments on Water Gravity Drainage Driven by Steam Injection into Elliptical Steam Chambers

  • Jonathan Enrique Martínez-Gómez,
  • Abraham Medina,
  • Francisco J. Higuera and
  • Carlos A. Vargas

16 June 2022

Based on a recently published theoretical model, in this work we experimentally studied the problem of gravity water drainage due to continuous steam injection into an elliptical porous chamber made of glass beads and embedded in a metallic, quasi-2D...

  • Article
  • Open Access
7 Citations
1,912 Views
14 Pages

Lid-Driven Chamber with 3D Elliptical Obstacle under the Impacts of the Nano-Properties of the Fluid, Lorentz Force, Thermal Buoyancy, and Space Porosity

  • Houssem Laidoudi,
  • Aissa Abderrahmane,
  • Abdulkafi Mohammed Saeed,
  • Kamel Guedri,
  • Obai Younis,
  • Riadh Marzouki,
  • Jae Dong Chung and
  • Nehad Ali Shah

11 July 2022

In this work, we have performed an investigation to increase our understanding of the motion of a hybrid nanofluid trapped inside a three-dimensional container. The room also includes a three-dimensional heated obstacle of an elliptic cross-section....

  • Article
  • Open Access
1 Citations
1,732 Views
25 Pages

28 April 2024

Biaxial compression tests based on an elliptical tunnel were conducted to study the failure characteristics and the meso-crack evolution mechanism of tunnels with different cross-sections constructed in sandstone. The progressive crack propagation pr...

  • Article
  • Open Access
2,046 Views
15 Pages

Experiments on Steam Injection into Preformed Steam Chambers of Various Shapes for Maximum Condensate Recovery

  • Abraham Medina,
  • Diego Benjamin García,
  • Abel López Villa,
  • Benjamin Castillo-Morales and
  • Georgiy Polupan

6 July 2023

Recently, in a previous study, we experimentally showed the existence of an optimal injected steam mass flow rate, per unit length, ϕopt, which produces the maximal recovery of condensate in a preformed steam chamber with an elliptical cross sec...

  • Article
  • Open Access
11 Citations
2,599 Views
14 Pages

3 May 2020

Elliptical diesel nozzles affect the fuel–air mixing process, and thus combustion and exhaust emissions. Experiments were conducted to study biodiesel spray liquid-phase behaviors for elliptical and circular nozzles through the Mie-scattering m...

  • Article
  • Open Access
3 Citations
3,967 Views
18 Pages

Temporal Evolution of Cooling by Natural Convection in an Enclosed Magma Chamber

  • Carlos Enrique Zambra,
  • Luciano Gonzalez-Olivares,
  • Johan González and
  • Benjamin Clausen

5 January 2022

This research numerically studies the transient cooling of partially liquid magma by natural convection in an enclosed magma chamber. The mathematical model is based on the conservation laws for momentum, energy and mass for a non-Newtonian and incom...

  • Article
  • Open Access
12 Citations
3,481 Views
13 Pages

Fuel Pretreatment Systems in Modern CI Engines

  • Jacek Eliasz,
  • Tomasz Osipowicz,
  • Karol Franciszek Abramek,
  • Zbigniew Matuszak and
  • Łukasz Mozga

20 June 2020

The article concerns the possibility of using a fuel pretreatment system in modern compression ignition CI engines, the main task of which is the reduction of toxic emissions in the form of exhaust gases. This fuel pretreatment system consists of a c...

  • Communication
  • Open Access
12 Citations
5,892 Views
15 Pages

Design, Simulation, and Evaluation of Polymer-Based Microfluidic Devices via Computational Fluid Dynamics and Cell Culture “On-Chip”

  • Nurzhanna Bakuova,
  • Sultanali Toktarkan,
  • Darkhan Dyussembinov,
  • Dulat Azhibek,
  • Almas Rakhymzhanov,
  • Konstantinos Kostas and
  • Gulsim Kulsharova

22 July 2023

Organ-on-a-chip (OoC) technology has experienced exponential growth driven by the need for a better understanding of in-organ processes and the development of novel approaches. This paper investigates and compares the flow behavior and filling charac...

  • Article
  • Open Access
10 Citations
2,185 Views
17 Pages

Hydrothermal Mixed Convection in a Split-Lid-Driven Triangular Cavity Suspended by NEPCM

  • Obai Younis,
  • Sameh E. Ahmed,
  • Aissa Abderrahmane,
  • Abdulaziz Alenazi and
  • Ahmed M. Hassan

9 March 2023

A numerical investigation of the magnetohydrodynamics of a mixed convection of nano-enhanced phase change material (NEPCM) within a triangular chamber containing an elliptical heat source is presented in this article. The forced convection has result...

  • Article
  • Open Access
2 Citations
3,223 Views
15 Pages

Study of the Self-Locking Characteristics of the Swing Scraper of an Elliptical Rotor Scraper Pump

  • Yang Cao,
  • Tiezhu Zhang,
  • Hongxin Zhang,
  • Zhen Zhang,
  • Jian Yang and
  • Baoquan Liu

This paper proposes an Elliptical Rotor Scraper Pump (ERSP) to address traditional displacement pump defects, such as complex structures, poor self-sealing, low volume utilization, and considerable noise, etc. The ERSP utilizes a swing scraper instea...

  • Article
  • Open Access
26 Citations
2,441 Views
19 Pages

Entropy Generation in 2D Lid-Driven Porous Container with the Presence of Obstacles of Different Shapes and under the Influences of Buoyancy and Lorentz Forces

  • Apichit Maneengam,
  • Houssem Laidoudi,
  • Aissa Abderrahmane,
  • Ghulam Rasool,
  • Kamel Guedri,
  • Wajaree Weera,
  • Obai Younis and
  • Belgacem Bouallegue

27 June 2022

This paper includes a numerical investigation of a hybrid fluid containing 4% of Al2O3-Cu nanoparticles in a lid-driven container. The upper wall of the container has a high temperature and is movable. The lower wall is cool and wavy. An obstacle is...

  • Article
  • Open Access
17 Citations
11,971 Views
13 Pages

Development of an Optical Gas Leak Sensor for Detecting Ethylene, Dimethyl Ether and Methane

  • Qiulin Tan,
  • Xiangdong Pei,
  • Simin Zhu,
  • Dong Sun,
  • Jun Liu,
  • Chenyang Xue,
  • Ting Liang,
  • Wendong Zhang and
  • Jijun Xiong

28 March 2013

In this paper, we present an approach to develop an optical gas leak sensor that can be used to measure ethylene, dimethyl ether, and methane. The sensor is designed based on the principles of IR absorption spectrum detection, and comprises two cross...

  • Article
  • Open Access
35 Citations
5,505 Views
24 Pages

21 September 2020

Among the physical attributes of agricultural materials, mass, volume, and sizes have always been important quality parameters. Previous research focused mostly on volume estimation using stereo-based approaches, which rely on manual intervention or...

  • Article
  • Open Access
2 Citations
1,400 Views
36 Pages

12 October 2024

This study investigates the blast-resistant performance of a polyurea-coated suspension bridge girder under explosive loads. The Hunan Road Bridge of Shandong was used as a case study through combined test and numerical simulation methods. Two 3 kg T...

  • Abstract
  • Open Access
1,242 Views
1 Page

Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia resulting from a defect in the production or function of insulin, secreted by β cells of the pancreatic islets. Pancreatic islets are spherical cell aggregates (10...

  • Essay
  • Open Access
3 Citations
1,679 Views
15 Pages

29 August 2023

Addressing the inherent drawbacks of conventional positive displacement pumps, such as complex structure, poor sealing, low volumetric efficiency, and high noise, an innovative design of an elliptical rotor scraper pump (ERSP) was proposed. By segreg...

  • Article
  • Open Access
16 Citations
6,261 Views
15 Pages

1 September 2018

This paper discusses the output characteristics of the sensor response of infrared ethanol gas detectors based on incident radiation intensity. Sensors placed at each focal point of two elliptical waveguides were fabricated to yield two module combin...

  • Article
  • Open Access
27 Citations
3,878 Views
8 Pages

Nanofocusing Optics for an X-Ray Free-Electron Laser Generating an Extreme Intensity of 100 EW/cm2 Using Total Reflection Mirrors

  • Hirokatsu Yumoto,
  • Yuichi Inubushi,
  • Taito Osaka,
  • Ichiro Inoue,
  • Takahisa Koyama,
  • Kensuke Tono,
  • Makina Yabashi and
  • Haruhiko Ohashi

10 April 2020

A nanofocusing optical system—referred to as 100 exa—for an X-ray free-electron laser (XFEL) was developed to generate an extremely high intensity of 100 EW/cm2 (1020 W/cm2) using total reflection mirrors. The system is based on Kirkpatri...

  • Article
  • Open Access
594 Views
19 Pages

An Open-Type Crossflow Microfluidic Chip for Deformable Droplet Separation Driven by a Centrifugal Field

  • Zekun Li,
  • Yongchao Cai,
  • Xiangfu Wei,
  • Cuimin Sun,
  • Wenshen Luo and
  • Hui You

30 June 2025

This study presents an innovative wedge-shaped inlet weir-type microfluidic chip designed to address common issues of clogging and inefficiency in microfiltration processes. Driven solely by centrifugal force, the chip integrates a crossflow separati...

  • Article
  • Open Access
8 Citations
4,293 Views
17 Pages

Lab-Based Evaluation of Device-Free Passive Localization Using Multipath Channel Information

  • Jonas Ninnemann,
  • Paul Schwarzbach,
  • Andrea Jung and
  • Oliver Michler

30 March 2021

The interconnection of devices, driven by the Internet of Things (IoT), enables a broad variety of smart applications and location-based services. The latter is often realized via transponder based approaches, which actively determine device position...

  • Article
  • Open Access
7 Citations
1,525 Views
19 Pages

Numerical and Analytical Determination of Rockburst Characteristics: Case Study from Polish Deep Copper Mine

  • Witold Pytel,
  • Krzysztof Fuławka,
  • Bogumiła Pałac-Walko and
  • Piotr Mertuszka

30 October 2023

A simplified analytical method useful for ductile ground support design in underground mine workings is presented. This approach allows for maintaining the stability of sidewalls in rectangular openings extracted in competent and homogeneous rocks, e...

  • Article
  • Open Access
2 Citations
1,582 Views
12 Pages

24 November 2023

(1) Background: There is no reliable way to assess antenatal fetal pulmonary hypoplasia; however, the biological parameters of the fetal lung can help in evaluating fetal lung development. This study aimed to establish the reference intervals for nor...