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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

Reference vegetation for restoration? Three vegetation maps compared across 76 nature reserves in Uganda and Kenya

Jens‐Peter Barnekow Lillesø, Davide Barsotti, James Kalema, Paulo vanBreugel et al. • Ecosphere (2024)

Abstract Forest and landscape restoration are increasingly popular nature‐based solutions to mitigate climate change and safeguard biodiversity. Restoration planning and monitoring implies that a reference ecosystem has been defined to whic...

DOAJ Open Access (DOAJ) DOI: 10.1002/ecs2.70030

Evaluation of Population and Hybrid Varieties of Winter Rye in the Conditions of Eastern Siberia

Anatolii V. Pomortsev, Nikolay V. Dorofeev, Svetlana Yu. Zorina, Natalia B. Katysheva et al. • Agronomy (2023)

Winter rye has a high adaptive capacity to abiotic and biotic stressors compared to other winter crops (wheat, triticale, barley, and oats). High resistance of winter rye to adverse environmental factors and a wide range of its uses increas...

DOAJ Open Access (DOAJ) DOI: 10.3390/agronomy13051431

OsAAI1 is dependent on the nitrate pathway toregulate rice root development in response to high salt stress

Jinli Liu, Haimin Liao, Shasha Chen, Mengxia Wu et al. • Plant Stress (2025)

Salt stress limits plant growth and yield. Though nitrogen fertilizer can alleviate salt damage, the effects of salt and nitrate on the stress resistance gene OsAAI1 are unclear. This study examined the Salt stress sensitivity of OsAAI1 tra...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.stress.2025.101091

DESENVOLVIMENTO INICIAL DO MILHO PIPOCA CULTIVADO SOB DIFERENTES RELAÇÕES NH4 +:NO3-

Francisco de Assis de Oliveira, José Francismar de Medeiros, Patrício Borges Maracajá, Mychelle Karla Teixeira de Oliveira et al. • Revista Caatinga (2008)

The culture of the popcorn comes as a promising culture for region of the Brazilian northeast, however they are still scarce studies to make possible the expansion of this culture, especially as the fertilization. This experiment was accomp...

DOAJ Open Access (DOAJ)

Pengembangan Media Pembelajaran Planetarium Gerhana sebagai Alat Bantu dalam Pembelajaran Ilmu Pengetahuan Bumi Antariksa (IPBA) pada Materi Gerhana

Vera Siska Pratiwi, Afrizal Mayub, Dedy Hamdani • Jurnal Kumparan Fisika (2018)

Penelitian ini bertujuan untuk mengembangkan media pembelajaran planetarium gerhana untuk pembelajaran IPBA. Mengetahui hasil uji coba media pembelajaran planetarium gerhana pada pembelajaran IPBA. Mengetahui respon dari para responden terh...

DOAJ Open Access (DOAJ)

Low cloud response to aerosol‐radiation‐cloud interactions: Idealized WRF numerical experiments for EUREC4A project

Nazario Tartaglione, Fabien Desbiolles, Anna delMoral‐Méndez, Agostino N. Meroni et al. • Atmospheric Science Letters (2024)

Abstract Aerosols significantly affect cloud microphysics and energy budget in different ways. The contribution of the direct, semi‐direct, and indirect effects of aerosols on radiation are here investigated over the North Atlantic tropical...

DOAJ Open Access (DOAJ) DOI: 10.1002/asl.1208

Imaging the ring opening reaction of 1,3-cyclohexadiene with MeV ultrafast electron diffraction

Wolf Thomas J. A., Yang Jie, Sanchez David M., Nunes J. Pedro. F. et al. • EPJ Web of Conferences (2019)

We resolve the structural dynamics of the ultrafast photoinduced ring opening reaction of 1,3-cyclohexadiene in space and time employing megaelectronvolt gas phase ultrafast electron diffraction. We, furthermore, observe coherent large ampl...

DOAJ Open Access (DOAJ) DOI: 10.1051/epjconf/201920507006

Pengaruh Model Project Based Learning Berbantuan Media Virtual Terhadap Penguasaan Konsep Peserta didik pada Materi Alat-alat Optik

Ni Made Yeni Suranti, Gunawan Gunawan, Hairunnisyah Sahidu • JPFT (Jurnal Pendidikan Fisika dan Teknologi) (2017)

Learning physics should be able to provide an understanding physics of abstract concepts. One of the efforts being made to improve the learning of Physics is to use appropriate learning model. This study aims to improve the student’s...

DOAJ Open Access (DOAJ) DOI: 10.29303/jpft.v2i2.292

The Relationship between Exercise and Salivary Oxidative Stress: A Systematic Review

Raphael Charchar Campos Alves, Railson Oliveira Ferreira, Deborah Ribeiro Frazão, Yago Gecy de Souza Né et al. • Antioxidants (2022)

Salivary content has been reported as a potential biomarker for oxidative stress assessments especially in context of exercise-induced oxidative stress. This systematic review following PRISMA guidelines aimed to evaluate the effects of phy...

DOAJ Open Access (DOAJ) DOI: 10.3390/antiox11081489

When spectators feel ashamed: vicarious shame and behavioral responses to in-group misconduct

Lei Ren, Hong Ma, Xiaoli Zong • Frontiers in Psychology (2026)

IntroductionIn the context of sport spectatorship, spectators may experience feelings of vicarious shame when witnessing their in-group members' misconduct, which can significantly impact their behavioral responses. Despite growing interest...

DOAJ Open Access (DOAJ) DOI: 10.3389/fpsyg.2026.1834709 PMC: PMC13562235

The Reliability and Sensitivity of Change of Direction Deficit and Its Association with Linear Sprint Speed in Prepubertal Male Soccer Players

Senda Sammoud, Raja Bouguezzi, Yassine Negra, Helmi Chaabene • Journal of Functional Morphology and Kinesiology (2021)

Background: This study aimed to examine the reliability and sensitivity of a change of direction deficit (CoDD) and to establish its relationship with linear sprint speed. Methods: In total, 89 prepubertal male soccer players participated i...

DOAJ Open Access (DOAJ) DOI: 10.3390/jfmk6020041

Assessment of Quality of Life and Social Correlates among Drug Sensitive and Multidrug-resistant Tuberculosis Patients

G. Hamsaveni, A. M. Amrutha, Bhagyalaxmi Sidenur, Vijayalaxmi Mangasuli et al. • Journal of Association of Pulmonologist of Tamil Nadu (2024)

Background: Tuberculosis (TB) has significant health, social, psychological, and economic impacts on patients. This study aimed to assess and compare quality of life (QOL) among multidrug-resistant (MDR) TB patients and drug-sensitive TB pa...

DOAJ Open Access (DOAJ) DOI: 10.4103/japt.japt_14_24

Application of Instrumented Paddles in Measuring On-Water Kinetics of Front and Back Paddlers in K2 Sprint Kayaking Crews of Various Ability Levels

Pui Wah Kong, Cheryl Sihui Tay, Jing Wen Pan • Sensors (2020)

This study used instrumented paddles to obtain on-water kinetic variables of two-seater (K2) crews during sprint kayaking. A total of 74 male kayakers of various ability levels (national team: 9, recreational club: 38, school team: 27) comp...

DOAJ Open Access (DOAJ) DOI: 10.3390/s20216317

Self-Concept and Self-Esteem: Relevant Variables in the Life Satisfaction of Teachers

Óscar Gavín-Chocano, Guillermo Sanz-Junoy, David Molero • Education Sciences (2025)

Over the last two decades, the number of people who practice activities in the natural environment has increased and the demand for teachers for these activities has grown. It is necessary to analyze the impact of different psychosocial and...

DOAJ Open Access (DOAJ) DOI: 10.3390/educsci15060673

Does Practice Make Perfect? The Effects of an Eight-Week Manualized Deliberate Practice Course With Peer Feedback on Patient-Rated Working Alliance in Adults: A Pilot Randomized Controlled Trial

Håkan Lagerberg, James F. Boswell, Michael J. Constantino, Gerhard Andersson et al. • Clinical Psychology in Europe (2024)

[Background] Deliberate Practice (DP), which underscores the importance of expert mentorship, personalized learning objectives, feedback, and repetition, has been suggested as a method to enhance the effectiveness of therapists. [Method] Th...

DOAJ Open Access (DOAJ) DOI: 10.32872/cpe.12353

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

Epoetin zeta in the management of anemia associated with chronic kidney disease, differential pharmacology and clinical utility

Davis-Ajami ML, Wu J, Downton K, Ludeman E et al. • Biologics: Targets & Therapy (2014)

Mary Lynn Davis-Ajami,1 Jun Wu,2 Katherine Downton,3 Emilie Ludeman,3 Virginia Noxon4 1Organizational Systems and Adult Health, University of Maryland School of Nursing, Baltimore, MD, USA; 2South Carolina College of Pharmacy, University of...

DOAJ Open Access (DOAJ)