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Showing 20 of 178 academic articles

Complex structural evolution in BaTiO3 single crystals caused by the coexistence of competing anharmonic potentials

Annette Bussmann-Holder, Iwona Lazar, Andrzej Soszyński, Krystian Roleder • Materials & Design (2026)

BaTiO3 (BTO) was the first ferroelectric perovskite oxide discovered in the 1940′th.. It was also the first ferroelectric compound without hydrogen bonds. Its wide applicability, together with its simple cubic structure, directly intensifie...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.matdes.2026.116642

Formation of surfaces oxide vacancies in porous ZnCo2O4 nanoflowers for enhanced energy storage performance

Deyang Zhang, Binhe Feng, Wenbo Guo, Jinbing Cheng et al. • Discover Nano (2025)

Abstract A cost-effective and large-scale method for synthesizing ZnCo2O4 nanoflowers with surface oxygen vacancies as electrode materials for supercapacitors is presented. The existence of oxygen vacancies on the surface of the ZnCo2O4 nan...

DOAJ Open Access (DOAJ) DOI: 10.1186/s11671-025-04347-y

Effect of Systematic Control of Pd Thickness and Annealing Temperature on the Fabrication and Evolution of Palladium Nanostructures on Si (111) via the Solid State Dewetting

Sundar Kunwar, Puran Pandey, Mao Sui, Quanzhen Zhang et al. • Nanoscale Research Letters (2017)

Abstract Si-based optoelectronic devices embedded with metallic nanoparticles (NPs) have demonstrated the NP shape, size, spacing, and crystallinity dependent on light absorption and emission induced by the localized surface plasmon resonan...

DOAJ Open Access (DOAJ) DOI: 10.1186/s11671-017-2138-1

Multipoint boundary value problems for higher-order Hadamard fractional neutral differential equations and inclusions

Qing Zhang, Chunshuo Li, Lina Zhou, Qiaoluan Li • Boundary Value Problems (2023)

Abstract In this paper, we consider fractional neutral differential equations with multipoint boundary value conditions involving Hadamard derivatives and integrals. We obtain the existence and uniqueness of the solution of the equation by ...

DOAJ Open Access (DOAJ) DOI: 10.1186/s13661-023-01697-3

An ML-Based Radial Velocity Estimation Algorithm for Moving Targets in Spaceborne High-Resolution and Wide-Swath SAR Systems

Tingting Jin, Xiaolan Qiu, Donghui Hu, Chibiao Ding • Remote Sensing (2017)

Multichannel synthetic aperture radar (SAR) is a significant breakthrough to the inherent limitation between high-resolution and wide-swath (HRWS) compared with conventional SAR. Moving target indication (MTI) is an important application of...

DOAJ Open Access (DOAJ) DOI: 10.3390/rs9050404

Online Classification of Road Roughness Conditions with Vehicle Unsprung Mass Acceleration by Sliding Time Window

Zhongxing Li, Wenhao Yu, Xiaoli Cui • Shock and Vibration (2018)

Suspension control systems are in need for more information of road roughness conditions to improve their performance under different roads. Existing methods of gauging road roughness are limited, and they usually involve visual inspections...

DOAJ Open Access (DOAJ) DOI: 10.1155/2018/5131434

Bridges in Luck - Past and Present

Nataliia Nosaliuk, Alexander Andreychuk • Budownictwo i Architektura (2014)

This article is about bridges that existed in the past and currently used by residents and guests in Lutsk. Here are shown the rich history of bridges in Lutsk, and the importance of the existence of these structures in city. The main water...

DOAJ Open Access (DOAJ) DOI: 10.35784/bud-arch.1952

Weighing and Prioritizing the Eight Principles of Integrated Health, Safety, Environment and Energy Management in Industries Covered by the Ministry of Industry, Mining and Trade

Rasoul Yarahmadi, Hamed Moridi, Ali Asghar Farshad, Fereshteh Taheri • Salāmat-i kār-i Īrān (2020)

Abstract: Aim and Background: Today, with the growth of different dimensions of sustainable development, managers at the organizational and governmental levels have become more and more interested in the components of sustainable developmen...

DOAJ Open Access (DOAJ)

Dual career (profession and sport) in academic system - a premise for the existence a regular university football championship in Romania

Alexandru ILIEȘ, Sorin Dacian BUHAȘ • GeoSport for Society (2020)

University football has tradition in the Romanian political context. The first teams that made history in amateur and later professional football were founded in the early twentieth century by students who returned to the country after comp...

DOAJ Open Access (DOAJ) DOI: 10.30892/gss.1306-066

A framework-based systematic review of blue tourism literature: Current status and future research agenda

Valsaraj PAYINI, Giridhar KAMATH, Vasanth V.P. KAMATH, Jyothi MALLYA • Tourism and Hospitality Management (2025)

Purpose – With destinations facing ever-increasing challenges due to increasing tourism activities, understanding residents’ perspectives is critical for fostering a harmonious and sustainable coexistence. Therefore, this study systematical...

DOAJ Open Access (DOAJ) DOI: 10.20867/thm.31.4.10

Nutritional status, literacy, and risk factors of malnutrition in the population over 50 years of age - findings from the SHARE project

Tereza Vágnerová, Olga Dvořáčková, Eva Topinková • Clinical Nutrition Open Science (2024)

Summary: Background & Aims: The transition from middle age to old age (from adults aged 50–55 years to older seniors aged 75–80 years) represents a critical period in terms of changes in body composition, i.e., increase in body fat per...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.nutos.2024.01.006

Chemical Diversity of Fuzhuan Brick Teas from Hunan and Shaanxi

ZHANG Ning, YU Shilan, YAN Haoyi, ZHANG Yunjun, HAN Xiaoyu, REN Hongyu, CHEN Yuqing, LING Tiejun, AN Maoqiang • Shipin Kexue (2024)

This study aimed to explore the diversity of metabolites and compare the metabolite profiles of Fuzhuan brick teas from Hunan and Shaanxi, to find out the difference in chemical components between fresh tea leaves and Fuzhuan brick tea and ...

DOAJ Open Access (DOAJ) DOI: 10.7506/spkx1002-6630-20231108-066

Beverage Consumption Patterns and Their Association with Metabolic Health in Adults from Families at High Risk for Type 2 Diabetes in Europe—The Feel4Diabetes Study

Paris Kantaras, Niki Mourouti, Theodora Mouratidou, Ekaterini Chatzaki et al. • Endocrines (2024)

In total, 3274 adults (65.2% females) from six European countries were included in this cross-sectional analysis using data from the baseline assessment of the Feel4Diabetes study. Anthropometric, sociodemographic, dietary and behavioral da...

DOAJ Open Access (DOAJ) DOI: 10.3390/endocrines5030020

Threshold dynamics of a delayed predator–prey model with impulse via the basic reproduction number

Xiangsen Liu, Binxiang Dai • Advances in Difference Equations (2018)

Abstract In this paper, we study a delayed predator–prey model with impulse and, in particular, the existence of the predator-free periodic solution. We employ the approach and techniques coming from epidemiology and calculate the basic rep...

DOAJ Open Access (DOAJ) DOI: 10.1186/s13662-018-1895-1