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705 Results Found

  • Feature Paper
  • Article
  • Open Access
8 Citations
3,723 Views
9 Pages

Influence of β-Stabilizers on the α-Ti→ω-Ti Transformation in Ti-Based Alloys

  • Askar Kilmametov,
  • Alena Gornakova,
  • Mikhail Karpov,
  • Natalia Afonikova,
  • Anna Korneva,
  • Pawel Zięba,
  • Brigitte Baretzky and
  • Boris Straumal

11 September 2020

The development of next generation Ti-based alloys demand completely new processes and approaches. In particular, the Ti-alloys of next generation will contain not only α-Ti and β-Ti phases, but also small amounts of ω-phase and inte...

  • Article
  • Open Access
97 Citations
9,914 Views
15 Pages

26 October 2015

The inhibitor cystine knot (ICK) is an unusual three-disulfide architecture in which one of the disulfide bonds bisects a loop formed by the two other disulfide bridges and the intervening sections of the protein backbone. Peptides containing an ICK...

  • Article
  • Open Access
3 Citations
1,213 Views
37 Pages

In this work, we introduce a new definition for the fractional differential operator that generalizes several well-known fractional differential operators. In fact, we introduce the notion of the p-proportional ω-weighted κ-Hilfer derivat...

  • Article
  • Open Access
14 Citations
2,414 Views
10 Pages

17 June 2021

Using the Cădariu–Radu method derived from the Diaz–Margolis theorem, we study the existence, uniqueness and Gauss hypergeometric stability of Ω-Hilfer fractional differential equations defined on compact domains. Next, we show the main results for u...

  • Article
  • Open Access
524 Views
24 Pages

19 June 2025

The purpose of this article is to analyze a hybrid-type iterative algorithm for a class of generalized non-expansive mappings satisfying the Garcia-Falset property in uniformly convex Banach spaces. Some existing results for such mappings have been o...

  • Article
  • Open Access
13 Citations
2,403 Views
26 Pages

14 November 2022

This work is devoted to presenting a new four-step iterative scheme for approximating fixed points under almost contraction mappings and Reich–Suzuki-type nonexpansive mappings (RSTN mappings, for short). Additionally, we demonstrate that for a...

  • Article
  • Open Access
2 Citations
3,139 Views
14 Pages

20 September 2022

In this paper, an approach for precise determination of the thermal conductivity of novel lead-free perovskite thin films by 3ω method, realized with a field programmable analog array circuit, is presented. The objective of the work is to study...

  • Article
  • Open Access
10 Citations
2,675 Views
16 Pages

Improved Stability and Catalytic Efficiency of ω-Transaminase in Aqueous Mixture of Deep Eutectic Solvents

  • Hongpeng Wang,
  • Mercy Vimbai Masuku,
  • Yachen Tao,
  • Jiayao Yang,
  • Yi Kuang,
  • Changjiang Lyu,
  • Jun Huang and
  • Shengxiang Yang

The efficient biosynthesis of chiral amines at an industrial scale to meet the high demand from industries that require chiral amines as precursors is challenging due to the poor stability and low catalytic efficiency of ω-transaminases (&omega...

  • Article
  • Open Access
14 Citations
3,639 Views
19 Pages

Formation and Thermal Stability of the ω-Phase in Ti–Nb and Ti–Mo Alloys Subjected to HPT

  • Anna Korneva,
  • Boris Straumal,
  • Alena Gornakova,
  • Askar Kilmametov,
  • Łukasz Gondek,
  • Lidia Lityńska-Dobrzyńska,
  • Robert Chulist,
  • Małgorzata Pomorska and
  • Paweł Zięba

10 June 2022

This paper discusses the features of ω-phase formation and its thermal stability depending on the phase composition, alloying element and the grain size of the initial microstructure of Ti–Nb and Ti–Mo alloys subjected to high-press...

  • Article
  • Open Access
31 Citations
5,655 Views
16 Pages

8 April 2022

The growing awareness of consumers means that new products are sought after, which, apart from meeting the basic demand for macronutrients and energy, will have a positive impact on our health. This article is a report on the characteristics of the n...

  • Article
  • Open Access
21 Citations
4,732 Views
14 Pages

Zirconium Phase Transformation under Static High Pressure and ω-Zr Phase Stability at High Temperatures

  • Lucyna Jaworska,
  • Jolanta Cyboron,
  • Slawomir Cygan,
  • Adam Zwolinski,
  • Boguslaw Onderka and
  • Tomasz Skrzekut

12 July 2019

High-purity Zr has been observed to undergo a phase transformation from the α-phase to the hexagonal ω-phase under high pressure generated either statically or by shock loading. The transition pressure from α-Zr to ω-Zr at 300...

  • Feature Paper
  • Article
  • Open Access
20 Citations
5,602 Views
16 Pages

Formation and Thermal Stability of ω-Ti(Fe) in α-Phase-Based Ti(Fe) Alloys

  • Mario J. Kriegel,
  • Martin Rudolph,
  • Askar Kilmametov,
  • Boris B. Straumal,
  • Julia Ivanisenko,
  • Olga Fabrichnaya,
  • Horst Hahn and
  • David Rafaja

21 March 2020

In this work, the formation and thermal stability of the ω-Ti(Fe) phase that were produced by the high-pressure torsion (HPT) were studied in two-phase α-Ti + TiFe alloys containing 2 wt.%, 4 wt.% and 10 wt.% iron. The two-phase microstru...

  • Feature Paper
  • Article
  • Open Access
14 Citations
3,571 Views
10 Pages

23 January 2022

The achievement of room-temperature (RT) superelasticity in a Ti-Mo-Al ternary alloy system through the addition of a relatively high concentration of Al to manipulate the phase stability of the ω phase is realized in this study. The compositio...

  • Article
  • Open Access
9 Citations
2,408 Views
8 Pages

Influence of Nb Addition on α″ and ω Phase Stability and on Mechanical Properties in the Ti-12Mo-xNb Stoichiometric System

  • Sinara Borborema,
  • Vitor de Holanda Ferrer,
  • Adriana da Cunha Rocha,
  • Caio Marcello Felbinger Azevedo Cossú,
  • Aline Raquel Vieira Nunes,
  • Carlos Angelo Nunes,
  • Loic Malet and
  • Luiz Henrique de Almeida

13 September 2022

Metastable β-Ti alloys have become one of the most attractive implant materials due to their high biocorrosion resistance, biocompatibility, and mechanical properties, including lower Young’s modulus values. Mechanical properties of these...

  • Article
  • Open Access
7 Citations
2,849 Views
14 Pages

6 August 2021

In this paper, we study possibilities of eradication of populations at an early stage of a patient’s infection in the framework of the seven-order Stengel model with 11 model parameters and four treatment parameters describing the interactions of wil...

  • Article
  • Open Access
7 Citations
6,158 Views
22 Pages

12 September 2019

The current work aimed to clarify the effects of four structured lipids, including monoglycerides with docosahexaenoic acid (2D-MAG), diacylglycerols with caprylic acid (1,3C-DAG), triglyceride with caprylic acid at sn-1,3 and DHA at sn-2 position (1...

  • Article
  • Open Access
6,058 Views
14 Pages

30 December 2024

The current study hypothesized that omega-3 fatty acids ω-3 FAs consumed with various tea extracts, which included green tea extract comprising 35% and 65% catechin (GTE35 and GTE65), naturally fermented green tea (Heukcha) extract (NFGT), and...

  • Article
  • Open Access
12 Citations
4,017 Views
10 Pages

Modification of the Nutritional Quality and Oxidative Stability of Lupin (Lupinus mutabilis Sweet) and Sacha Inchi (Plukenetia volubilis L.) Oil Blends

  • Gilbert Rodríguez,
  • Elza Aguirre,
  • Any Córdova-Chang,
  • Jenny C. Muñoz-Saenz,
  • Mery Baquerizo,
  • Andrea Brandolini,
  • Eudes Villanueva and
  • Alyssa Hidalgo

27 October 2022

Andean lupin (Lupinus mutabilis) oil is rich in monounsaturated (54.2%) and polyunsaturated (28.5%) fatty acids but has a ω-3:ω-6 ratio (1:9.2) above the recommended values for human health. Sacha inchi (Plukenetia volubilis) oil presents...

  • Article
  • Open Access
1 Citations
1,108 Views
12 Pages

N-Atom Doping of ω–Fe, α–Fe, and γ–Fe Compounds: A First-Principle Study

  • Jing Tang,
  • Hongping Xiang,
  • Lin Xu,
  • Shoujiang Qu,
  • Aihan Feng,
  • Na Li and
  • Dehai Ping

21 January 2025

Recently, a new phase, ω–Fe, has been observed in martensitic substructures, providing a new path for studying the position and evolution of nitrogen in high-nitrogen steels. In this paper, the density functional method was used to invest...

  • Article
  • Open Access
5 Citations
3,201 Views
21 Pages

In this paper, we consider a problem of continuity fractional-order for pseudo-parabolic equations with the fractional derivative of Caputo. Here, we investigate the stability of the problem with respect to derivative parameters and initial data. We...

  • Article
  • Open Access
3 Citations
3,251 Views
17 Pages

18 October 2019

Thermal stability in nanocrystalline alloys has been extensively explored while using both experimental and theoretical approaches. From the theoretical point of view, the vast majority of the models proposed in the literature have been implicitly li...

  • Article
  • Open Access
52 Citations
9,350 Views
17 Pages

6 February 2013

Sub-single-cycle pulses in the mid-infrared (MIR) region were generated through a laser-induced filament. The fundamental (ω1) and second harmonic (ω2) output of a 30-fs Ti:sapphire amplifier were focused into nitrogen gas and produce phase-stable br...

  • Article
  • Open Access
13 Citations
3,005 Views
19 Pages

19 July 2024

This work compared the suitability of the k-ϵ standard, k-ϵ RNG, k-ω SST, and k-ω standard turbulence models for simulating a gravitational water vortex hydraulic turbine using ANSYS Fluent. This study revealed significant dis...

  • Article
  • Open Access
717 Views
23 Pages

Selection of a Turbulence Model for Wave Evolution on a New Ecological Hollow Cube

  • Haitao Zhao,
  • Junwei Ye,
  • Kaifang Wang,
  • Yian Zhou,
  • Zhen Zeng,
  • Qiang Li and
  • Xizeng Zhao

12 April 2025

A suitable turbulence model is needed for numerical simulations to accurately simulate the wave evolution and hydrodynamic performance of the new ecological hollow cube. The new ecological hollow cube is an improvement upon traditional designs, as it...

  • Article
  • Open Access
19 Citations
3,904 Views
17 Pages

Chemical Characteristics and Thermal Oxidative Stability of Novel Cold-Pressed Oil Blends: GC, LF NMR, and DSC Studies

  • Wojciech Cichocki,
  • Dominik Kmiecik,
  • Hanna Maria Baranowska,
  • Hanna Staroszczyk,
  • Agata Sommer and
  • Przemysław Łukasz Kowalczewski

10 July 2023

Plant oils contain a high content of unsaturated fatty acids. Studies of food products have revealed a considerable disproportion in the ratio of ω6 to ω3. This article presents information on the healthful qualities of eight new oil blen...

  • Article
  • Open Access
2 Citations
2,906 Views
24 Pages

8 July 2023

It is well known that ω-circulant matrices with ω≠0 can be simultaneously diagonalized by a transform matrix, which can be factored as the product of a diagonal matrix, depending on ω, and of the unitary matrix Fn associated to t...

  • Article
  • Open Access
4 Citations
1,884 Views
12 Pages

Qualitative Behavior of an Exponential Symmetric Difference Equation System

  • Tarek F. Ibrahim,
  • Somayah Refaei,
  • Abdul Khaliq,
  • Mohamed Abd El-Moneam,
  • Bakri A. Younis,
  • Waleed M. Osman and
  • Bushra R. Al-Sinan

22 November 2022

We examine the unboundedness, persistence, boundedness, uniqueness, and existence of non-negative equilibrium of an exponential symmetric difference equations system: Ωn+1=α1+β1Ωn+γ1Ωn−1e−(Ωn+ϖ...

  • Article
  • Open Access
19 Citations
3,498 Views
10 Pages

The Characteristic of Fe as a β-Ti Stabilizer in Ti Alloys

  • Jin Min,
  • Yanhua Guo,
  • Jingzhe Niu,
  • Juexian Cao,
  • Zhonggang Sun and
  • Hui Chang

8 December 2021

It is well known that adding elements, especially β-Ti stabilizers, are holding a significant effect on titanium alloy strength due to the solution and precipitate strengthening mechanisms. In order to reveal the Fe strengthening mechanism in ti...

  • Article
  • Open Access
1 Citations
3,654 Views
16 Pages

A Simple Methodology to Develop Bifilar, Quadrifilar, and Octofilar Calculable Resistors

  • Alepth H. Pacheco-Estrada,
  • Felipe L. Hernandez-Marquez,
  • Carlos D. Aviles,
  • Carlos Duarte-Galvan,
  • Juvenal Rodríguez-Reséndiz,
  • Humberto Aguirre-Becerra and
  • Luis M. Contreras-Medina

28 February 2020

This paper describes the development of bifilar, quadrifilar, and octofilar Calculable Resistors (CRs). The research involves Evanohm-S and Isaohm wire heat treatment processes to achieve temperature coefficients less than 0.5 μ Ω / &Ome...

  • Article
  • Open Access
2 Citations
2,011 Views
21 Pages

An estimation of the proportion of nonsynonymous to synonymous mutation (dn/ds, ω) of the SARS-CoV-2 genome would indicate the evolutionary dynamics necessary to evolve into novel strains with increased infection, virulence, and vaccine neutral...

  • Article
  • Open Access
934 Views
13 Pages

22 May 2025

The enzyme ω-transaminase (ω-TA) has garnered significant attention due to its capacity to catalyze the synthesis of chiral amines with high efficiency. Nevertheless, the lack of stability of ω-TA and the difficulty of recycling and...

  • Article
  • Open Access
2 Citations
1,701 Views
17 Pages

11 May 2024

In this paper, we carry out some research on a predator–prey system with maturation delay, a stage structure for generalist predators and a Holling type-II functional response, which has already been proposed. First, for the delayed model, we o...

  • Article
  • Open Access
17 Citations
5,110 Views
14 Pages

Combined Buckwheat d-Fagomine and Fish Omega-3 PUFAs Stabilize the Populations of Gut Prevotella and Bacteroides While Reducing Weight Gain in Rats

  • Mercè Hereu,
  • Sara Ramos-Romero,
  • Roser Marín-Valls,
  • Susana Amézqueta,
  • Bernat Miralles-Pérez,
  • Marta Romeu,
  • Lucía Méndez,
  • Isabel Medina and
  • Josep Lluís Torres

31 October 2019

Some functional food components may help maintain homeostasis by promoting balanced gut microbiota. Here, we explore the possible complementary effects of d-fagomine and ω-3 polyunsaturated fatty acids (ω-3 PUFAs) eicosapentaenoic acid/do...

  • Article
  • Open Access
17 Citations
2,862 Views
16 Pages

On the Dynamics of an Enhanced Coaxial Inertial Exciter for Vibratory Machines

  • Volodymyr Gurskyi,
  • Vitaliy Korendiy,
  • Pavlo Krot,
  • Radosław Zimroz,
  • Oleksandr Kachur and
  • Nadiia Maherus

11 January 2023

Theoretical investigations into the capabilities of a coaxial inertial drive with various operating modes for vibratory conveyors and screens are conducted in the paper. The coaxial inertial exciter is designed with one asynchronous electric motor an...

  • Article
  • Open Access
5 Citations
5,793 Views
12 Pages

Environmental Stability of Elevated α-Linolenic Acid Derived from a Wild Soybean in Three Asian Countries

  • Hyun Jo,
  • Minsu Kim,
  • Liakat Ali,
  • Rupesh Tayade,
  • Danim Jo,
  • Duc Thao Le,
  • Siviengkhek Phommalth,
  • Bo-Keun Ha,
  • Sungtaeg Kang and
  • Jeong-Dong Lee
  • + 1 author

Soybean has been consumed in Asia traditionally as a staple food. Soybean can be a source of essential fatty acids—linoleic (18:2, ω-6) and α-linolenic acid (18:3, ω-3)—for humans. Intake of fatty acids with high ω...

  • Article
  • Open Access
4 Citations
1,556 Views
22 Pages

The primary goal of this research is to lessen the high vibration that the model causes by using an appropriate vibration control. Thus, we begin by implementing various controller types to investigate their impact on the system’s reaction and...

  • Article
  • Open Access
79 Citations
8,518 Views
20 Pages

Chemical Analysis of Minor Bioactive Components and Cannabidiolic Acid in Commercial Hemp Seed Oil

  • Luana Izzo,
  • Severina Pacifico,
  • Simona Piccolella,
  • Luigi Castaldo,
  • Alfonso Narváez,
  • Michela Grosso and
  • Alberto Ritieni

14 August 2020

Although hemp seed (HS) oil is characterized by more than 80% polyunsaturated fatty acids (PUFAs), a very high ω-6-to-ω-3 ratio is not a popular commodity. The aim of this work was to provide useful data about the bioactive components and...

  • Article
  • Open Access
6 Citations
4,168 Views
11 Pages

Stability of Silver-Nanowire-Based Flexible Transparent Electrodes under Mechanical Stress

  • Yoohan Ma,
  • Geon Woo Sim,
  • Sungjin Jo,
  • Dong Choon Hyun,
  • Jae-Seung Roh,
  • Dongwook Ko and
  • Jongbok Kim

3 January 2024

Flexible transparent electrodes are integral to the advancement of flexible optoelectronic devices such as flexible displays and solar cells. However, indium tin oxide (ITO), a traditional material used in transparent electrodes, exhibits a significa...

  • Article
  • Open Access
1,329 Views
19 Pages

This study investigates the influence of vacancy engineering and nitrogen doping on the structural, electronic, and optical properties of T-graphene fragments (TFs) using density functional theory (DFT) and time-dependent DFT (TD-DFT). A central vaca...

  • Article
  • Open Access
14 Citations
3,933 Views
10 Pages

New Holographic Dark Energy Model in Brans-Dicke Theory

  • M. Sharif,
  • Syed Asif Ali Shah and
  • Kazuharu Bamba

11 May 2018

We study the cosmic evolution of the Bianchi type I universe by using new holographic dark energy model in the context of the Brans-Dicke theory for both non-interacting and interacting cases between dark energy and dark matter. We evaluate the equat...

  • Article
  • Open Access
12 Citations
3,265 Views
18 Pages

In this article, the time-fractional reaction-diffusion equations are solved by using a mixed finite volume element (MFVE) method and the L 1 -formula of approximating the Caputo fractional derivative. The existence, uniqueness and uncondition...

  • Article
  • Open Access
1 Citations
1,308 Views
10 Pages

Effect of Coffee Silverskin on Meat Quality of Growing Rabbits

  • Francesco Foti,
  • Manuel Scerra,
  • Pasquale Caparra,
  • Matteo Bognanno,
  • Caterina Cilione,
  • Paolo Fortugno,
  • Paolo De Caria,
  • Valerio Chinè,
  • Guido Mangione and
  • Luigi Chies
  • + 1 author

26 February 2025

The aim of the present study was to assess the impacts of coffee silverskin (CSS) inclusion in rabbit diets in regard to meat quality. A total of 30 Hycole rabbits were divided into two groups of 15 animals per group and fed with a basal diet (C grou...

  • Article
  • Open Access
1 Citations
654 Views
20 Pages

This paper investigates the well-posedness of analytical solutions to fractional quadratic differential equations, which involve generalized fractional integrals with respect to other functions. The nonlinear components f and h depend on spatial vari...

  • Feature Paper
  • Article
  • Open Access
8 Citations
4,314 Views
15 Pages

23 May 2021

Cytochrome P450 (CYP) mediated enzymatic hydroxylation of fatty acids present a green alternative to chemical synthesis of hydroxy fatty acids (HFAs), which are high-value oleochemicals with various uses in materials industry and medical field. Altho...

  • Article
  • Open Access
14 Citations
3,979 Views
15 Pages

24 December 2020

In this work, we studied a Ti-Nb-Zr-Sn system for exploring novel composition and temperatures that will be helpful in maximizing the stability of β phase while minimizing the formation of α” and ω-phase. The Ti-Nb-Zr-Sn system...

  • Article
  • Open Access
786 Views
14 Pages

Research on an Ice-Breaking Mechanism Using Subglacial Resonance

  • Zegang Tian,
  • Zixu Zhu,
  • Bo Tong,
  • Nianming Hu,
  • Mingyong Hu and
  • Yongbao Liu

The Arctic ice layer serves as an excellent cover for strategic nuclear submarine forces, but it also poses significant challenges when submarines surface. This paper proposes a method for breaking through the ice layer and surfacing in polar environ...

  • Article
  • Open Access
3 Citations
2,169 Views
20 Pages

In this work, a fully discrete mixed finite element (MFE) scheme is designed to solve the multi-term time-fractional reaction–diffusion equations with variable coefficients by using the well-known L1 formula and the Raviart–Thomas MFE spa...

  • Review
  • Open Access
153 Citations
25,426 Views
25 Pages

21 June 2018

Chiral amines are important components of 40–45% of small molecule pharmaceuticals and many other industrially important fine chemicals and agrochemicals. Recent advances in synthetic applications of ω-transaminases for the production of...

  • Article
  • Open Access
13 Citations
3,842 Views
22 Pages

31 May 2023

Carbon-based nano-conductive silicone rubber is a kind of composite conductive polymer material that has good electrical and thermal conductivities and high magnetic flux. It has good application prospects for replacing most traditional conductive ma...

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