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Barriers and opportunities for clinical trials in Bahrain: a qualitative study of key opinion leaders

Jamil Ahmed, Angeleena Esther, Hussein AlHafnawi, Mohamed Hany Shehata et al. • BMJ Open (2026)

Background and objectives Clinical trials are essential for advancing scientific knowledge and improving patient outcomes. In the last decade, Bahrain has made notable progress in healthcare. However, clinical trial participation from the r...

DOAJ Open Access (DOAJ) DOI: 10.1136/bmjopen-2026-117241

Challenges and experience of the Ethiopian rural health extension program: implications for reform and revitalization

Taddese Alemu Zerfu, Amare Abera Tareke, Sibhatu Biadgilign • BMC Health Services Research (2023)

Abstract Background Despite remarkable gains over the past decade, mounting evidence suggests that Ethiopia’s rural health extension program (HEP) is facing serious implementation challenges. We investigated the current and potential future...

DOAJ Open Access (DOAJ) DOI: 10.1186/s12913-023-10253-9

A pre- and post-operative protocol for assessment of voice and swallowing function in patients undergoing heart or lung transplantation

Rebecca Black, BApSc, Speech Pathologist(SP), Duy Duong Nguyen, MD PhD, Anna Miles, PhD, Daniel Novakovic, MBBS, FRACS, MPH et al. • JHLT Open (2025)

Background: Oropharyngeal dysphagia and laryngeal dysfunction are complications of lung and heart transplantation. However, there is a lack of understanding around pre-operative function and an absence of standardized assessment protocols. ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.jhlto.2025.100261

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

Impact of solvents on doctor blade coatings and bathocuproine cathode interlayer for large-area organic solar cell modules

Soonil Hong, Byoungwook Park, Chandran Balamurugan, Jinho Lee et al. • Heliyon (2023)

Efforts to commercialize organic solar cells (OSCs) by developing roll-to-roll compatible modules have encountered challenges in optimizing printing processes to attain laboratory-level performance in fully printable OSC architectures. In t...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.heliyon.2023.e18209

REDUCING CLIMATE IMPACTS ON WATER RESOURCES AS THE LEGAL AND ECONOMIC BASIS FOR ENVIRONMENTAL SECURITY IN THE EU CANDIDATE COUNTRIES: THE CASE OF UKRAINE

Ielyzaveta Lvova, Kateryna Kozmuliak, Liudmyla Strutynska-Struk • Baltic Journal of Economic Studies (2022)

As climate change is one of the greatest challenges of our time, the legal and economic issues of global environmental security deserve high praise. In the area of industrial competitiveness, where the negative effects of global climate cha...

DOAJ Open Access (DOAJ) DOI: 10.30525/2256-0742/2022-8-3-101-114

Enhancing Los Angeles’ resilient energy systems amid wildfires

Alexis Pengfei Zhao, Mohannad Alhazmi, Shuangqi Li, Jiarong Li et al. • Scientific Reports (2025)

Abstract Wildfires pose a significant threat to urban regions, with cities like Los Angeles facing increasing challenges due to their vulnerability to frequent and severe wildfire events. This study proposes a novel framework for optimizing...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-025-02433-w

Investigating the cost of mechanized unpaved road maintenance operations in Uganda

Andrew Moses Obeti, Lawrence Muhwezi, John Muhumuza Kakitahi, Chris Bic Byaruhanga • Transportation Research Interdisciplinary Perspectives (2024)

Force Account Mechanism (FAM) is the predominant road maintenance system in Uganda’s local government setup and a similar, though slightly different approach, is used in some large private sector agriculture plantations. With the Uganda Roa...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.trip.2024.101135

Determination of Optimal Principal Ship Dimensions Considering EEDI and Operational Efficiency

Bo-Sung Jung, Seung-Ho Ham • Journal of Marine Science and Engineering (2026)

The determination of principal dimensions in the early ship design stage requires iterative calculations based on the basis ship particulars and ship owner’s requirements, demanding considerable time and engineering effort. In modern shipbu...

DOAJ Open Access (DOAJ) DOI: 10.3390/jmse14100939

Mixed Systems of Quaternary Ammonium Foam Drainage Agent with Carbon Quantum Dots and Silica Nanoparticles for Improved Gas Field Performance

Yongqiang Sun, Yongping Zhang, Anqi Wei, Xin Shan et al. • Nanomaterials (2024)

Foam drainage agents enhance gas production by removing wellbore liquids. However, due to the ultra-high salinity environments of the Hechuan gas field (salinity up to 32.5 × 104 mg/L), no foam drainage agent is suitable for this gas field....

DOAJ Open Access (DOAJ) DOI: 10.3390/nano14191590

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

Tissue-specific responses of antioxidant pathways to poor hygiene conditions in growing pigs divergently selected for feed efficiency

K. Sierżant, M-H. Perruchot, E. Merlot, N. Le Floc’h et al. • BMC Veterinary Research (2019)

Abstract Background Poor hygiene of housing induces a systemic inflammatory response. Because inflammation and oxidative stress are processes that can sustain each other, the ways pigs are able to activate their antioxidant defenses are cri...

DOAJ Open Access (DOAJ) DOI: 10.1186/s12917-019-2107-2

Research of Multi-Rotor UAVs Detailed Autonomous Inspection Technology of Transmission Lines Based on Route Planning

Tong He, Yihui Zeng, Zhuangli Hu • IEEE Access (2019)

With the rapid development of the economy, the scale of transmission networks has been expanding, bring higher demands and challenges on transmission line operation and maintenance. In this paper, the multi-rotor unmanned aerial vehicles (U...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2019.2935551

Advances of Single‐Atomic Cobalt Catalysts in Liquid‐Phase Selective Oxidative Reactions

Jiaquan Li, Kai Wang, Yijiao Jiang, Jun Huang et al. • Small Science (2023)

Single‐atom catalysts (SACs) composed of atomically dispersed metal‐active sites embedded in supporting substrates are attracting increasing attention in liquid‐phase selective oxidation reactions with joint merits of both advanced catalyti...

DOAJ Open Access (DOAJ) DOI: 10.1002/smsc.202300079

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