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Untargeted metabolomic profiling of Pseudocnella sykion from KwaZulu-Natal, South Africa using 1H-NMR and UPLC-QTOF-HR-MS

Cassandra Upton, Gerhard Prinsloo, Paul Anton Steenkamp, Moses Okpeku • Frontiers in Marine Science (2025)

IntroductionSea cucumbers are ecologically and economically significant marine invertebrates, yet the metabolic diversity and bioactive potential of noncommercialized, endemic species remains poorly understood.MethodsThis study presents the...

DOAJ Open Access (DOAJ) DOI: 10.3389/fmars.2025.1609951

Children’s memory “in the wild”: examining the temporal organization of free recall from a week-long camp at a local zoo

Thanujeni Pathman, Lina Deker, Puneet Kaur Parmar, Mark Christopher Adkins et al. • Cognitive Research (2023)

Abstract Free-recall paradigms have greatly influenced our understanding of memory. The majority of this research involves laboratory-based events (e.g., word lists) that are studied and tested within minutes. This literature shows that adu...

DOAJ Open Access (DOAJ) DOI: 10.1186/s41235-022-00452-z

Molecular Dynamics and In Vitro Studies Elucidating the Tunable Features of Reconfigurable Nanodiscs for Guiding the Optimal Design of Curcumin Formulation

Yongxiao Li, Wanting Xu, Xinpei Wang, Ruizhi Lai et al. • Bioengineering (2024)

In this study, we advance our exploration of Apolipoprotein A-I (apoA-I) peptide analogs (APAs) for their application in nanodisc (ND) assembly, focusing on the dynamic conformational characteristics and the potential for drug delivery. We ...

DOAJ Open Access (DOAJ) DOI: 10.3390/bioengineering11030245

Developing an Interferogram-Based Module with Machine Learning for Maintaining Leveling of Glass Substrates

Syuan-Cheng Chang, Chung-Ping Chang, Yung-Cheng Wang, Chi-Chieh Chu • Machines (2023)

In this research, we propose a method that utilizes machine learning to maintain the parallelism of the resonant cavity in a Fabry–Perot interferometer designed specifically for glass substrates. Based on the optical principle and theory, w...

DOAJ Open Access (DOAJ) DOI: 10.3390/machines11060668

Engineering Geological Characterization and Microtopographic Controls on Slide–Pipeline Interaction in Steep Submarine Canyons, Qiongdongnan Basin

Hua Tao, Yide Wang, Huajie Yu, Hao Li et al. • Journal of Marine Science and Engineering (2026)

Steep submarine canyons pose challenges to deep-water pipeline routing because of rugged terrain and slide-related hazards. This study integrates 3D seismic data, shipborne and autonomous underwater vehicle bathymetry, sub-bottom profiles, ...

DOAJ Open Access (DOAJ) DOI: 10.3390/jmse14181720

Conocimientos, actitudes y prácticas de profesionales de la nutrición y dietética sobre el papel del yogur en la alimentación saludable y sostenible: un estudio transversal

Eduard Baladia, Manuel Moñino, Martina Miserachs, Giuseppe Russolillo • Revista Española de Nutrición Humana y Dietética (2025)

Introduction: Perceptions and practices of healthcare professionals regarding the nutritional and dietary value of yogurt can play a crucial role in developing effective strategies to promote healthier and more sustainable dietary patterns....

DOAJ Open Access (DOAJ) DOI: 10.14306/renhyd.29.1.2332

Timing of menarche and pubertal growth patterns using the QEPS growth model

Jenni Gårdstedt-Berghog, Jenni Gårdstedt-Berghog, Aimon Niklasson, Agneta Sjöberg et al. • Frontiers in Pediatrics (2024)

ObjectivesTo explore the timing of menarche, postmenarcheal growth, and to investigate the impact of various variables on menarcheal age and postmenarcheal and pubertal growth.Study DesignThis longitudinal community population-based study a...

DOAJ Open Access (DOAJ) DOI: 10.3389/fped.2024.1438042

Integrated Analysis of Liver Transcriptome, miRNA, and Proteome of Chinese Indigenous Breed Ningxiang Pig in Three Developmental Stages Uncovers Significant miRNA–mRNA–Protein Networks in Lipid Metabolism

Biao Li, Jinzeng Yang, Yan Gong, Yu Xiao et al. • Frontiers in Genetics (2021)

Liver is an important metabolic organ of mammals. During each transitional period of life, liver metabolism is programmed by a complex molecular regulatory system for multiple physiological functions, many pathways of which are regulated by...

DOAJ Open Access (DOAJ) DOI: 10.3389/fgene.2021.709521

Disruption of sleep patterns among secondary school adolescents

Zeki Sabah MUSIHB, Hasan Saud Abdul HUSSEIN, Alaa Mahdi Abd ALI • Journal of Integrative Nursing (2024)

Objectives: This study aims to assess sleep disorders among secondary school adolescents and explore the relationship between sociodemographic factors (age, gender, household income, and sleep duration) and the occurrence of these disorders...

DOAJ Open Access (DOAJ) DOI: 10.4103/jin.jin_63_24

ATIB: Design and Evaluation of an Architecture for Brokered Self-Sovereign Identity Integration and Trust-Enhancing Attribute Aggregation for Service Provider

Andreas Gruner, Alexander Muhle, Christoph Meinel • IEEE Access (2021)

Identity management is a principle component of securing online services. In the advancement of traditional identity management patterns, the identity provider remained a Trusted Third Party (TTP). The service provider and the user need to ...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2021.3116095

Toxicity and biodistribution comparison of functionalized nanodiamonds, quantum dot nanocarbons and gold nanoparticles

Elena Alexander, Kam W. Leong • Frontiers in Nanotechnology (2025)

IntroductionNanomaterials are extensively utilized in applications ranging from electronics to biomedical therapies; however, their widespread use has prompted concerns about potential toxicity in humans. Understanding the biodistribution a...

DOAJ Open Access (DOAJ) DOI: 10.3389/fnano.2025.1512622

Indagine epidemiologica locale dell’eziologia delle infezioni delle vie urinarie (IVU) nosocomiali e comunitarie e dell’antibiotico-sensibilità degli uropatogeni.

Agostina Ronca, Sabrina Brenci, Luisa Santoriello, Anna Marchese et al. • Microbiologia Medica (2007)

Background: Urinary tract infections (UTIs) are common infectious diseases that can be associated with substantial morbidity. During the last decade, resistance to ampicillin and co-trimoxazole has increased in Escherichia coli, the most co...

DOAJ Open Access (DOAJ) DOI: 10.4081/mm.2007.2603

Analyzing the Spatiotemporal Patterns in Green Spaces for Urban Studies Using Location-Based Social Media Data

Hidayat Ullah, Wanggen Wan, Saqib Ali Haidery, Naimat Ullah Khan et al. • ISPRS International Journal of Geo-Information (2019)

Green parks are vital public spaces and play a major role in urban living and well-being. Research on the attractiveness of green parks often relies on traditional techniques, such as questionnaires and in-situ surveys, but these methods a...

DOAJ Open Access (DOAJ) DOI: 10.3390/ijgi8110506

A cluster randomised school-based lifestyle intervention programme for the prevention of childhood obesity and related early cardiovascular disease (JuvenTUM 3)

Haller Bernhard, Lammel Christoph, Hanssen Henner, Siegrist Monika et al. • BMC Public Health (2011)

Abstract Background Childhood obesity is not only associated with adult obesity but also with increased risk of adult onset of type 2 diabetes and subsequent coronary heart disease. The potential effects of school-based health intervention ...

DOAJ Open Access (DOAJ) DOI: 10.1186/1471-2458-11-258

Knowledge, attitude, and practice patterns of Indian ophthalmologists regarding medicolegal issues

Deepanshu Agrawal, Aarti Heda, Sayantan Ghosh, Sonal Kalia et al. • Indian Journal of Ophthalmology (2023)

Purpose: To assess the knowledge, attitude, and practice patterns (KAPP) of Indian ophthalmologists regarding medicolegal issues using an initial survey. Methods: An online form was circulated among Indian ophthalmologists of all ages over ...

DOAJ Open Access (DOAJ) DOI: 10.4103/IJO.IJO_1084_23

Spatiotemporal patterns of remotely sensed phenology and their response to climate change and topography in subtropical bamboo forests during 2001-2017: a case study in Zhejiang Province, China

Xuejian Li, Huaqiang Du, Guomo Zhou, Fangjie Mao et al. • GIScience & Remote Sensing (2023)

Vegetation phenology has long been adapted to environmental change and is highly sensitive to climate change. Shifts in phenology also affect feedbacks of vegetation to environmental factors such as topography and climate by influencing spati...

DOAJ Open Access (DOAJ) DOI: 10.1080/15481603.2022.2163575

Molecular regionalization in the compact brain of the meiofaunal annelid Dinophilus gyrociliatus (Dinophilidae)

Alexandra Kerbl, José M. Martín-Durán, Katrine Worsaae, Andreas Hejnol • EvoDevo (2016)

Abstract Background Annelida is a morphologically diverse animal group that exhibits a remarkable variety in nervous system architecture (e.g., number and location of longitudinal cords, architecture of the brain). Despite this heterogeneit...

DOAJ Open Access (DOAJ) DOI: 10.1186/s13227-016-0058-2

Hg Isotopes and Enhanced Hg Concentration in the Meishan and Guryul Ravine Successions: Proxies for Volcanism Across the Permian-Triassic Boundary

Alcides Nóbrega Sial, Jiubin Chen, Christoph Korte, Manoj Kumar Pandit et al. • Frontiers in Earth Science (2021)

High-resolution organic carbon isotope (δ13C), Hg concentration and Hg isotopes curves are presented for the Permian-Triassic boundary (PTB) sections at Guryul Ravine (India) and Meishan D (China). The total organic carbon (TOC)-normalized ...

DOAJ Open Access (DOAJ) DOI: 10.3389/feart.2021.651224

Nestedness of benthic diatom metacommunity in relation to species niche width and environmental variables in a large near-natural catchment

Xinxin Qi, Xinxin Qi, Guohao Liu, Guohao Liu et al. • Frontiers in Ecology and Evolution (2024)

Insight into the non-random distribution patterns of species in different regions is a foundational aim of research in community ecology and biogeography. The nestedness pattern, which investigates changes in species composition and abundan...

DOAJ Open Access (DOAJ) DOI: 10.3389/fevo.2024.1339946