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323 Results Found

  • Article
  • Open Access

7 January 2026

With the rapid development of the Internet of Things (IoT), micro-energy storage devices face increasing demands for miniaturization, high energy density, and high power density. Owing to their excellent electrical conductivity and mechanical strengt...

  • Article
  • Open Access
31 Citations
6,250 Views
14 Pages

21 December 2017

The cutting properties of tools can be greatly improved by AlCrSiN coatings. The AlCrSiN coatings with nitrogen content in the range of 28.2–56.3 at.% were prepared by varying the N2/Ar flow ratio from 1/4 to 1/1. The influence of N2/Ar flow ratio on...

  • Article
  • Open Access
4 Citations
1,271 Views
13 Pages

27 September 2024

In this study, multi-element nitride coatings composed of (Ti, Cr, Cu, Al, Si)N were synthesized on H13 tool steel using cathodic arc deposition (CAD) technology. The N2/Ar flow ratio varied from 0 to 2 as the experimental parameter, and two targets,...

  • Article
  • Open Access
1 Citations
896 Views
12 Pages

8 July 2025

Residual stress plays a crucial role in determining the structural reliability and mechanical performance of nano-multilayers. In the present study, nano-multilayers composed of ZrOxNy and V2O3 were deposited via magnetron sputtering, with the N:Ar f...

  • Article
  • Open Access
9 Citations
2,654 Views
13 Pages

18 December 2020

The reactive gas flow ratio and substrate bias voltage are crucial sputtering parameters for fabricating transition metal nitride films. In this study, W–N films were prepared using sputtering with nitrogen flow ratios (f) of 0.1–0.5. W&n...

  • Article
  • Open Access
1,015 Views
14 Pages

4 May 2025

In this study, as-cast ductile iron was austempered to produce austempered ductile iron (ADI). A CrAlSiN film was then deposited on the surface of ADI specimens using the cathodic arc deposition (CAD) method. The gas flow ratio of Ar/N2 varied (2, 2....

  • Article
  • Open Access
66 Citations
5,771 Views
13 Pages

This study deposited CrAlN coatings from Al50Cr50 targets using high-power impulse magnetron sputtering, with a focus on the effects of nitrogen content and substrate bias voltage on the deposition rate, microstructure, crystal orientation, residual...

  • Article
  • Open Access
21 Citations
4,166 Views
12 Pages

ZrNx (x = 0.67–1.38) films were fabricated through direct current magnetron sputtering by a varying nitrogen flow ratio [N2/(Ar + N2)] ranging from 0.4 to 1.0. The structural variation, bonding characteristics, and mechanical properties of the...

  • Article
  • Open Access
24 Citations
3,731 Views
9 Pages

17 September 2021

A series of Tantalum Nitride (TaN) films under a reactive direct current magnetron sputtering method with a controlled total gas flow rate were prepared on aluminum oxide substrates. To find the nitrogen flow rate, which produced the minimum sheet re...

  • Article
  • Open Access
19 Citations
9,393 Views
14 Pages

Optimization of Two-Stage Peltier Modules: Structure and Exergetic Efficiency

  • Miguel Angel Olivares-Robles,
  • Federico Vazquez and
  • Cesar Ramirez-Lopez

21 August 2012

In this paper we undertake the theoretical analysis of a two-stage semiconductor thermoelectric module (TEM) which contains an arbitrary and different number of thermocouples, n1 and n2, in each stage (pyramid-styled TEM). The analysis is based on a...

  • Article
  • Open Access
1,870 Views
16 Pages

28 August 2023

The equilibrium position yep/H of a particle in a microchannel flow of Newtonian and power-law fluids with an obstacle is numerically studied using the lattice Boltzmann method in the range of the ratio of an obstacle to particle diameter 0.5 ≤ &b...

  • Article
  • Open Access
4 Citations
2,391 Views
12 Pages

12 November 2021

Initial fluctuation is one of the ingredients that washes fingerprints of the nuclear symmetry energy on observables in heavy-ion collisions. By artificially using the same initial nuclei in all collision events, the effect of the initial fluctuation...

  • Article
  • Open Access
1 Citations
2,723 Views
16 Pages

9 May 2023

As a debris-flow control and mitigation countermeasure, flexible net barriers can effectively mitigate debris flows. The control and interception characteristics of flexible net barrier play an important role in engineering design. Many influencing f...

  • Article
  • Open Access
2 Citations
1,386 Views
17 Pages

28 September 2024

Microreactors are essential for microchemical reactions owing to their high mass transfer efficiency, precise control of reaction time, easy amplification, and good safety performance. These characteristics provide several advantages, including short...

  • Article
  • Open Access
1 Citations
2,025 Views
13 Pages

Titanium nitride (TiN) is a typical inorganic compound capable of achieving resistance modulation by adjusting the element ratio. In this work, to deeply investigate the resistance-tunable characteristics and electron emission properties of TiN, we p...

  • Article
  • Open Access
820 Views
15 Pages

20 September 2025

Self-lubricating coatings are an effective solution for achieving stable and reliable lubrication in mechanical equipment; however, most self-lubricating coatings currently available still have certain shortcomings in terms of lubricity. In this pape...

  • Article
  • Open Access
10 Citations
6,127 Views
18 Pages

The Aerodynamic Characteristics of a Rotating Cylinder Based on Large-Eddy Simulations

  • Dagang Zhao,
  • Yang Zhang,
  • Mingqi Bi,
  • Xin Zheng,
  • Xianghai Zhong and
  • Shun Zhang

The cylindrical flow around a cylinder is present in several engineering problems. Moreover, the flow pattern around a rotating cylinder is more complex than that around a cylinder. In this paper, a rotating cylinder at different speed ratios is inve...

  • Article
  • Open Access
9 Citations
2,912 Views
12 Pages

The Effect of Oxygen Content in Binderless Cokes for High-Density Carbon Blocks from Coal Tar Pitch

  • Seungjoo Park,
  • Seon Ho Lee,
  • Song Mi Lee,
  • Jin-Woo Park,
  • Sung-Soo Kim and
  • Doo-Hwan Jung

7 April 2021

High-density carbon blocks are much lighter than metals and have excellent mechanical properties and are one of the materials garnering attention to replace existing metal parts. In this study, a binderless coke was produced by changing the flow rate...

  • Article
  • Open Access
4 Citations
4,190 Views
10 Pages

29 June 2017

The excessive H2S presence in water and wastewater can lead to corrosion, toxicity, and biological processes inhibition—i.e., anaerobic digestion. Production of H2S can occur in psychrophilic conditions. Biological removal of HS− by addition of NO3−...

  • Article
  • Open Access
3 Citations
2,428 Views
18 Pages

5 February 2023

This paper proposes a stage flow parameter analytical model for rapid evaluation of a counter-rotating compressor’s performance for design optimization and its application in the design of a transonic counter-rotating fan. In the first part, th...

  • Article
  • Open Access
1,867 Views
14 Pages

27 April 2023

In this article, electro-osmotic thrusters (EOTs), which are full of non-Newtonian power-law fluids with a flow behavior index n of the effective viscosity, are theoretically investigated in a microchannel. Different values of the flow behavior index...

  • Article
  • Open Access
1,415 Views
15 Pages

Tantalum nitride (TaN) is a typical transition metal nitride characterized by a wide range of tunable resistivity. Low-resistance TaN even exhibits a resistivity similar to that of metals. Given that electrical resistance influences secondary electro...

  • Article
  • Open Access
1 Citations
1,908 Views
16 Pages

20 April 2023

The contraction/expansion laminar flow containing rodlike particles in power-law fluid is studied numerically when the particles are in a dilute phase. The fluid velocity vector and streamline of flow are given at the finite Reynolds number (Re) regi...

  • Article
  • Open Access
16 Citations
4,267 Views
19 Pages

Overland Flow Resistance Law under Sparse Stem Vegetation Coverage

  • Jingzhou Zhang,
  • Shengtang Zhang,
  • Si Chen,
  • Ming Liu,
  • Xuefeng Xu,
  • Jiansen Zhou,
  • Wenjun Wang,
  • Lijun Ma and
  • Chuantao Wang

14 June 2021

To explore the characteristics of overland flow resistance under the condition of sparse vegetative stem coverage and improve the basic theoretical research of overland flow, the resistance characteristics of overland flow were systematically investi...

  • Article
  • Open Access
2,175 Views
23 Pages

Research on the Mixing Mechanism and Parameter Optimization of Liquid Nitrogen Foam Generator

  • Yulin Liu,
  • Dongming Wang,
  • Min Xie,
  • Huanhuan Xu and
  • Xiaohan Ren

20 November 2022

Nitrogen foam is expected to be an effective method to extinguish large-scale fires and suppress explosions. The key to its foaming process is that gas nitrogen (N2) and a foam solution are mixed uniformly in a foam generator. Moreover, liquid nitrog...

  • Review
  • Open Access
1 Citations
2,229 Views
16 Pages

4 May 2024

The anisotropic flow of photons produced in relativistic nuclear collisions is known as a promising observable for studying the initial state and the subsequent evolution of the hot and dense medium formed in such collisions. The investigation of pho...

  • Feature Paper
  • Article
  • Open Access
5 Citations
3,365 Views
24 Pages

29 April 2022

Cyclic GMP-AMP (cGAMP) has lately been extensively investigated in cancer immunotherapy due its activation of the innate immunity stimulation of interferon genes (STING) pathway within antigen presenting cells (APC) leading to an increase in tumor sp...

  • Article
  • Open Access
13 Citations
5,451 Views
15 Pages

15 April 2018

Packed beds are widely used in catalytic reactors or nuclear reactors. Reducing the pressure drop and improving the heat transfer performance of a packed bed is a common research aim. The dimpled structure has a complex influence on the flow and heat...

  • Article
  • Open Access
3 Citations
2,345 Views
14 Pages

Study on Apparent Permeability Model for Gas Transport in Shale Inorganic Nanopores

  • Shuda Zhao,
  • Hongji Liu,
  • Enyuan Jiang,
  • Nan Zhao,
  • Chaohua Guo and
  • Baojun Bai

29 August 2022

Inorganic nanopores occurring in the shale matrix have strong hydrophilicity and irreducible water (IW) film can be formed on the inner surface of the pores making gas flow mechanisms in the pores more complex. In this paper, the existence of irreduc...

  • Proceeding Paper
  • Open Access
4 Citations
1,871 Views
9 Pages

16 November 2017

Riverine concentrations and loads of nitrogen (N) and phosphorus (P), in both dissolved and particulate fractions, are influenced by land cover and hydrologic variability. Previous studies on relationships between watershed characteristics and stream...

  • Article
  • Open Access
13 Citations
2,785 Views
16 Pages

Pre-Existing Hypertension Is Related with Disproportions in T-Lymphocytes in Older Age

  • Anna Tylutka,
  • Barbara Morawin,
  • Artur Gramacki and
  • Agnieszka Zembron-Lacny

6 January 2022

Age-related immune deficiencies increase the risk of comorbidities and mortality. This study evaluated immunosenescence patterns by flow cytometry of naïve and memory T cell subpopulations and the immune risk profile (IRP), expressed as the CD4/...

  • Article
  • Open Access
9 Citations
4,314 Views
15 Pages

14 February 2020

The second law of thermodynamics is applied to evaluate the influence of entropy generation on the performances of a cold heat exchanger of an experimental Stirling refrigeration machine by means of three factors: the entropy generation rate N S...

  • Feature Paper
  • Article
  • Open Access
22 Citations
4,204 Views
7 Pages

Connection between Carbon Incorporation and Growth Rate for GaN Epitaxial Layers Prepared by OMVPE

  • Timothy Ciarkowski,
  • Noah Allen,
  • Eric Carlson,
  • Robert McCarthy,
  • Chris Youtsey,
  • Jingshan Wang,
  • Patrick Fay,
  • Jinqiao Xie and
  • Louis Guido

1 August 2019

Carbon, a compensator in GaN, is an inherent part of the organometallic vapor phase epitaxy (OMVPE) environment due to the use of organometallic sources. In this study, the impact of growth conditions are explored on the incorporation of carbon in Ga...

  • Article
  • Open Access
8 Citations
1,797 Views
16 Pages

Effect of Dimpled Rib with Arc Pattern on Hydrothermal Characteristics of Al2O3-H2O Nanofluid Flow in a Square Duct

  • Anil Kumar,
  • Rajesh Maithani,
  • Sachin Sharma,
  • Sunil Kumar,
  • Mohsen Sharifpur,
  • Tabish Alam,
  • Naveen Kumar Gupta and
  • Sayed M. Eldin

8 November 2022

The present work is concerned with the experimental analysis of the thermal and hydraulic performance of Al2O3−H2O nanofluid flow in dimpled rib with arc pattern in a square duct. The Alumina nanofluid consists of nanoparticles having a size of...

  • Article
  • Open Access
12 Citations
4,441 Views
14 Pages

29 March 2022

The focus of this work is the study of the extractive dividing wall column (EDWC) for separating the azeotropic mixture of dipropyl ether and 1-propyl alcohol with N, N-dimethylacetamide (DMAC) as the entrainer. Three separation sequences are investi...

  • Article
  • Open Access
2 Citations
1,466 Views
14 Pages

26 July 2024

In the study described herein, CrTaWNx thin films were deposited on Si and 304 stainless-steel (SUS304) substrates through magnetron co-sputtering using CrW and Ta targets. The nitrogen flow ratio (fN2 = [N2/(N2 + Ar)]) was adjusted to 0.05, 0.2, 0.4...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,503 Views
21 Pages

21 May 2024

Oscillatory baffled flows (OBFs) provide a combined active and passive means of achieving convective heat transfer enhancement, and previous studies at large scale have demonstrated the heat transfer benefits of OBFs. To date, however, this technolog...

  • Article
  • Open Access
2 Citations
846 Views
14 Pages

Comparative Assessment of Immune Cell Subset Ratios (NKT/NK, Th/Tc, B1/B2) in Gestational Diabetes and Healthy Pregnancy: Links to Biochemical and Immunochemical Profiles

  • Jelena Omazić,
  • Andrijana Muller,
  • Mirta Kadivnik,
  • Blaženka Dobrošević,
  • Barbara Vuković,
  • Mirela Florijančić and
  • Jasenka Wagner

Introduction: Gestational diabetes (GD) is a common pregnancy metabolic disorder involving immune alterations. While there is a link between immune cells and GD, the specific roles of NKT/NK, helper/cytotoxic T, and B1/B2 lymphocyte ratios in complic...

  • Article
  • Open Access
4 Citations
1,572 Views
19 Pages

23 June 2023

The analysis of entropy generation provides valuable information for the design and optimization of thermal systems. Solar stills are used for water desalination and purification. Using renewable energies, they provide a sustainable solution for drin...

  • Article
  • Open Access
840 Views
19 Pages

27 April 2025

Determining the friction coefficients for uniform flows over very rough bottoms is a long-standing problem in open-channel hydraulics and river engineering. This experimental study presents measurements of the surface deformation as well as Darcy&nda...

  • Article
  • Open Access
8 Citations
3,727 Views
13 Pages

Microstructure Evolution and Mechanical Behavior of Mo–Si–N Films

  • Yu-Cheng Liu,
  • Bing-Hao Liang,
  • Chi-Ruei Huang and
  • Fan-Bean Wu

16 October 2020

The molybdenum silicon nitride (Mo–Si–N) films were deposited by a radio frequency (RF) magnetron reactive dual-gun co-sputtering technique with process control on input power and gas ratio. Composition variation, microstructure evolution...

  • Article
  • Open Access
4 Citations
4,429 Views
10 Pages

Correlation Between Stoichiometry of NbxNy Coatings Produced by DC Magnetron Sputtering with Electrical Conductivity and the Hall Coefficient

  • Angélica Garzon-Fontecha,
  • Harvi A. Castillo,
  • Daniel Escobar-Rincón,
  • Elisabeth Restrepo-Parra and
  • Wencel de la Cruz

18 March 2019

Non-stoichiometric NbxNy coatings, produced in a reactive sputtering process, were analyzed on the basis of their chemical composition (specifically, nitrogen concentration) and its relationship with electrical conductivity. The chemical composition...

  • Article
  • Open Access
6 Citations
4,479 Views
14 Pages

Upsetting Analysis of High-Strength Tubular Specimens with the Taguchi Method

  • Tomaž Pepelnjak,
  • Patricia Šašek and
  • Jan Kudlaček

28 October 2016

In order to obtain input data for numerical simulations of tube forming, the material properties of tubes need to be determined. A tube tensile test can only be used to measure yield stress and ultimate tensile stress. For tubes with a large diameter...

  • Article
  • Open Access
10 Citations
5,142 Views
22 Pages

Shock Reduction through Opposing Jets—Aerodynamic Performance and Flight Stability Perspectives

  • Shagufta Rashid,
  • Fahad Nawaz,
  • Adnan Maqsood,
  • Rizwan Riaz and
  • Shuaib Salamat

25 December 2019

In this research paper, investigations of counter flow (opposing) jet on the aerodynamic performance, and flight stability characteristics of an airfoil with blunt leading-edge in supersonic regime are performed. Unsteady Reynolds-Averaged Navier-Sto...

  • Article
  • Open Access
1 Citations
1,745 Views
17 Pages

19 July 2023

A thermodynamic efficiency analysis of MnFe2O4-based CO2 splitting (CDS) cycle is reported. HSC Chemistry software is used for performing the calculations allied with the model developed. By maintaining the reduction nonstoichiometry equal to 0.1, va...

  • Article
  • Open Access
1 Citations
2,328 Views
12 Pages

Determination of Wax Deposition Rate Model of Blended Oils with Different Blending Ratios

  • Zhuo Han,
  • Lihui Ma,
  • Xiaowei Li,
  • Haoran Zhu,
  • Wei Li,
  • Xiaohang Xia,
  • Xiaohan Zhang and
  • Rui Guo

11 April 2024

Blending with light oil is a commonly used and reliable method of crude oil transportation, and the blending ratio is a crucial operating parameter in determining the safe and efficient operation of the pipeline. In this paper, in-house flow and depo...

  • Article
  • Open Access
4 Citations
3,078 Views
23 Pages

Flow Ripple Reduction in Reciprocating Pumps by Multi-Phase Rectification

  • Gürhan Özkayar,
  • Zhilin Wang,
  • Joost Lötters,
  • Marcel Tichem and
  • Murali Krishna Ghatkesar

5 August 2023

Reciprocating piezoelectric micropumps enable miniaturization in microfluidics for lab-on-a-chip applications such as organs-on-chips (OoC). However, achieving a steady flow when using these micropumps is a significant challenge because of flow rippl...

  • Article
  • Open Access
6 Citations
2,761 Views
14 Pages

An Efficiency Analysis of 27 Level Single-Phase Asymmetric Inverter without Regeneration

  • Eduardo Espinosa,
  • Pedro Melín,
  • Carlos Baier,
  • José Espinoza and
  • Hugo Garcés

7 March 2021

For medium voltage applications, multilevel inverters are used. One of its classic topologies is the Cascaded H-Bridge, which requires isolated DC voltages to work. Depending on the DC voltage ratio used in the Cascaded H-bridge can be classified int...

  • Feature Paper
  • Article
  • Open Access
9 Citations
4,408 Views
16 Pages

Capsules Rheology in Carreau–Yasuda Fluids

  • Alessandro Coclite,
  • Giuseppe Maria Coclite and
  • Domenico De Tommasi

3 November 2020

In this paper, a Multi Relaxation Time Lattice Boltzmann scheme is used to describe the evolution of a non-Newtonian fluid. Such method is coupled with an Immersed-Boundary technique for the transport of arbitrarily shaped objects navigating the flow...

  • Article
  • Open Access
10 Citations
4,608 Views
10 Pages

Characterization of Gastric Tissue-Resident T Cells in Autoimmune and Helicobacter pylori-Associated Gastritis

  • Daisuke Kametaka,
  • Masaya Iwamuro,
  • Takahide Takahashi,
  • Araki Hirabata,
  • Kenta Hamada,
  • Yoshiyasu Kono,
  • Hiromitsu Kanzaki,
  • Seiji Kawano,
  • Takehiro Tanaka and
  • Fumio Otsuka
  • + 2 authors

Data regarding the in-depth surface marker profiles of gastric tissue-resident lymphocytes in autoimmune and Helicobacter pylori-associated gastritis are lacking. In this study, we investigated potential differences in lymphocyte composition between...

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