Digital Commons Network^™

A Review Of Full-Lifecycle Management Practices For Blue Mining Centered On Sustainable Development And Resource Efficiency, Hou Zhengmeng, Zhang Shengyou, Chen Qianjun, Sun Wei, Zhang Tian, Cai Nan, Huang Liangchao, Wang Qichen, Shi Tianle, Xu Xiaochuan

Coal Geology & Exploration

Against the backdrop of China’s goals of peak carbon dioxide emissions and carbon neutrality, along with the growing demand for critical minerals, this study presents a systematic review of domestic and international literature and engineering cases. Based on the Blue Mining concept proposed by Langefeld’s team of the Clausthal University of Technology and from the perspective of planning forward, this study organizes key technologies, treatment pathways, and essentials of full-lifecycle management used to transition mines from single-purpose stopes to multifunctional infrastructures. Centered on four guiding principles, i.e., energy, ergonomics, water resources, and circularity, this study reviews the synergetic planning process …

Phytochemical Composition And Bioactivities Of Roselle (Hibiscus Sabdariffa L.) Extracts Obtained By Infusion, Ethanolic Maceration, And Maltodextrin-Assisted Drying, Risna Silvianti, Warsito Warsito, Elok Zubaidah, Zubaidah Ningsih, Aqidatul Izza

Karbala International Journal of Modern Science

Roselle (Hibiscus sabdariffa L.) is rich in phenolic compounds and anthocyanins, but the extraction method may influence its chemical composition and biological activity. This study compared hot-water infusion, ethanolic maceration, and maltodextrin-assisted drying. It aimed to examine the relationship between the extraction method, chemical profile, and bioactivity. The resulting extracts (EI, EM, and EP) were analyzed for total phenolic, flavonoid, and anthocyanin, LC-HRMS profiles, and antioxidant capacity by the FRAP assay. Antibacterial analysis was conducted against Escherichia coli (ATCC 25922) and Staphylococcus aureus (ATCC 25923) using agar well diffusion. Cytotoxicity tests (MTT, 24 h) were performed against HT-29, 4T1, …

The Utilization Of Interactive Learning Videos To Improve Critical Thinking In Social Studies Learning Among Grade V Students At Sd Negeri 1 Kota Fajar, Cut Oktanalisa, Lili Kasmini

Jurnal Pendidikan Humaniora

Critical thinking is an essential competency for elementary students because it enables them to interpret information, analyze everyday problems, evaluate reasons, and communicate responsible decisions. In social studies learning, this competency needs to be developed through contextual, dialogic, and visually supported learning experiences. This study investigated the utilization of interactive learning videos to improve the critical thinking skills of Grade V students at SD Negeri 1 Kotafajar. The study employed a qualitative descriptive design supported by quantitative descriptive data. The participants were 30 Grade V students in the 2024/2025 academic year. Data were collected through pretest and posttest tasks, classroom …

Caring For The Carers: Exploring The Mental Wellbeing Of Informal Palliative Caregivers Of Cancer Patients In Kenya, James Kariuki, Rose Njiraini

Journal of Global Awareness

Cancer cases have been on the increase globally, and this has led to economic burden on the affected households. One way of reducing the cost of care is through home-based care by informal palliative caregivers who include family members, friends, and other people assigned by the family members to take care of the patient. The objectives of this study were to assess the status of the mental wellbeing of palliative caregivers of cancer patients; to examine the relationship between the ability of the patient to cope with cancer diagnosis and the mental wellbeing of the caregiver; and to investigate the …

Heroism As Emotional Integration: A Process Model Of Emotion-Driven Heroic Action, Scott T. Allison

Heroism Science

Heroism is often framed as the expression of prosocial motivation fueled by positive emotions such as empathy, compassion, and moral elevation. This perspective, however, overlooks the complex emotional dynamics that characterize high‑risk, morally consequential action. This article advances a process model of heroism as emotional integration, involving the dynamic coordination of multiple and often competing emotions—including fear, anger, compassion, and moral concern—under conditions of uncertainty and threat. Drawing on research in heroism studies, positive psychology, and affective science, the model distinguishes heroism from ordinary helping by emphasizing emotional conflict, regulatory processes, and identity‑based commitment. It further differentiates rapid, intuitive …

The Machine For Its Own Sake: Tolkien's Critique Of Instrumental Reason And The Modern Ecological Ethos, Ahmad J. El-Youssef

Journal of Tolkien Research

This essay examines J.R.R. Tolkien's legendarium as a systematic critique of instrumental reason, positioning his work as a vital philosophical resource for diagnosing and navigating the Anthropocene. Rather than a simplistic anti-technology stance, Tolkien's concept of the "Machine" represents a teleological logic that reduces the living world to a standing reserve, paralleling contemporary ecological crises. Through analysis of key narratives, particularly the industrialisation of Isengard, the corruption of the Shire, and the restoration of Lothlórien, this study demonstrates how Tolkien dramatises the ontological flattening inherent in instrumentalist domination. The essay contrasts this with Tolkien's alternative ethos of sub-creation and stewardship, …

Exploring The Role Of Magnesium Deficiency In Inflammatory Bowel Disease, Victor A. Bob-Yellowe, Shaunte Hadnot, Sonya Bhatia, Anesu K. Murambadoro

MEDI 9331 Scholarly Activities Clinical Years

Inflammatory Bowel Disease (IBD) is a group of chronic gastrointestinal disorders, including Ulcerative Colitis and Crohn’s disease. As of 2020, it was estimated that IBD significantly impacts the lives of approximately 2.39 million Americans. Magnesium (Mg) is an essential mineral involved in many bodily functions, including immune response and gut health. Recent studies suggest that Magnesium levels may be linked to IBD. Therefore, this review aims to explain how Magnesium might play a role in the development or progression of IBD. Additionally, this article discusses the overall role that Magnesium’s plays in gut health and whether Magnesium supplementation could be …

Effects Of Warming On Growth And Leaf Colonization By Litter Mat-Forming Fungi In A Wet Tropical Forest In Puerto Rico, Ari E. Puentes, D. Jean Lodge, Deyaneira A. Ortiz-Iglesias, Tatiana Barreto-Vélez, Laura C. Rubio-Lebrón, Hieu Chu, Christine S. O'Connell, Sasha C. Reed, Tana E. Wood

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Wet tropical forests are experiencing rising temperatures and increased frequency and intensity of extreme climatic events, such as cyclones, which can increase rates of soil erosion and surface runoff. Fungal litter mats, formed by agaric decomposer fungi, play a crucial role in stabilizing slopes, preventing erosion, and aiding nutrient cycling; however, little is known about how warming affects litter mat growth and function. We investigated two litter mat-forming fungi, Gymnopus johnstonii and Marasmius aff. crinis-equi, in warmed (+4°C above ambient) and control plots in the Luquillo Experimental Forest, Puerto Rico. Growth and time-to-leaf colonization were monitored over 6 weeks …

Influence Of Polyvinyl Alcohol Content On Starch-Based Bioplastic Reinforced With Chitosan And Microcrystalline Cellulose, Bagus Kharisma Putra, Andoko Andoko, Mochamad Viky Afandy, Muhammad Faizullah Pasha, Riduwan Prasetya

Chimica et Natura Acta

Starch-based bioplastics are promising sustainable alternatives to petroleum-based plastics; however, their limited mechanical strength and stability restrict broader packaging applications. This study investigates the influence of polyvinyl alcohol (PVA) content on the structural and functional properties of starch-based bioplastic films reinforced with chitosan and microcrystalline cellulose (MCC). Films prepared by solution casting with varying PVA compositions were characterized in terms of density, mechanical properties, thermal stability, biodegradation behavior, antibacterial activity, and structural features. Increasing PVA content produced denser film structures with improved tensile strength and thermal stability, while elongation at break reached its maximum at the intermediate formulation, indicating a …

Pfas Mixture Composition And Internal Exposure Profiles Shape Biological Responses Under Field-Realistic Exposure, Alan M. Vajda, Jill A. Jenkins, David W. Bertolatus, Denis R. Leblanc, Christopher J. Martyniuk, Zachary R. Hopkins, Andrea K. Tokranov, Abigail R. Dethloff, Joseph C. Tucker, Rainer Lohmann, Larry B. Barber

Graduate School of Oceanography Faculty Publications

Per- and polyfluoroalkyl substances (PFAS) occur as complex mixtures, yet mixture-dependent biological effects under environmentally realistic exposure conditions remain poorly understood. We conducted multiyear (2018, 2019, 2021) continuous-flow, field-based exposures of male fathead minnows (Pimephales promelas) using a low-PFAS reference well (REF; sum of measured PFAS (∑PFAS) 0.1–0.2 μg L^–1) and PFAS-contaminated groundwater from a fire-training area (FTA) at Joint Base Cape Cod, Massachusetts. Dilution treatments enabled separation of concentration and mixture effects. Groundwater from well FTA1 was perfluorooctanesulfonate (PFOS) dominated (∑PFAS 10–31 μg L^–1), whereas groundwater from well FTA2 had higher concentrations and …

Brain Age Prediction In Generalized Anxiety Disorder Using A Convolutional Neural Network, Corey Richier, André Zugman, Anita Harrewijn, Elise M Cardinale, Parmis Khosravi, Moji Aghajani, Willem B Bruin, Kevin Hilbert, Narcis Cardoner, Daniel Porta-Casteràs, Marta Cano, Savannah Gosnell, Ramiro Salas, Andrea P Jackowski, Pedro M Pan, Giovanni A Salum, Karina S Blair, James R Blair, Mohammed R Milad, Katie L Burkhouse, K Luan Phan, Heidi K Schroeder, Jeffrey R Strawn, Katja Beesdo-Baum, Neda Jahanshad, Sophia I Thomopoulos, Jared A Nielsen, Jordan W Smoller, Jair C Soares, Benson Mwangi, Mon-Ju Wu, Giovana B Zunta-Soares, Michal Assaf, Gretchen J Diefenbach, Paolo Brambilla, Eleonora Maggioni, David Hofmann, Thomas Straube, Carmen Andreescu, Rebecca B Price, Gisele G Manfro, Federica Agosta, Elisa Canu, Camilla Cividini, Massimo Filippi, Milutin Kostić, Ana Munjiza Jovanovic, Brenda Benson, Gabrielle F Freitag, Ellen Leibenluft, Grace V Ringlein, Kathryn Werwath, Hannah Zwiebel, Hans J Grabe, Sandra Van Der Auwera, Katharina Wittfeld, Henry Völzke, Robin Bülow, Nicholas L Balderston, Monique Ernst, Lilianne R Mujica-Parodi, Helena Van Nieuwenhuizen, Hugo D Critchley, Elena Makovac, Matteo Mancini, Frances Meeten, Cristina Ottaviani, Gregory A Fonzo, Martin P Paulus, Murray B Stein, Raquel E Gur, Ruben C Gur, Antonia N Kaczkurkin, Bart Larsen, Theodore D Satterthwaite, Jennifer Harper, Michael T Perino, Chad M Sylvester, Qiongru Yu, Patrick Mcclure, Francisco Pereira, Ulrike Lueken, Dick J Veltman, Paul M Thompson, Nynke A Groenewold, Janna Marie Bas-Hoogendam, Dan J Stein, Nic J A Van Der Wee, Anderson M Winkler, Daniel S Pine, Chelsea K Sawyers

Faculty, Staff and Student Publications

Higher predicted brain age difference has been associated with several psychiatric disorders. Generalized anxiety disorder (GAD) is associated with markers of accelerated aging. In this study, we determined brain predicted age difference (PAD) in individuals with GAD and healthy controls (HC) as well as group differences in PAD variability using voxel-wise structural MRI. The training dataset included 3511 controls, and the testing dataset included 1595 individuals with GAD and 4552 HC from the ENIGMA-Anxiety GAD Working Group. A convolutional neural network model using four input modalities per subject and a model ensemble approach was used to predict brain age. The …

How Fe(Ii)/2-Oxoglutarate Oxygenase Chooses Chlorination Over Hydroxylation: Electric Field-Driven Ligand Exchange Governs C-Cl Formation, Simahudeen Bathir Jaber Sathik Rifayee, Midhun George Thomas, Anandhu Krishnan, Kritika Gupta, Carter Davis, Tatyana Karabencheva-Christova, Christo Z. Christov

Michigan Tech Publications

Non-heme Fe(II)/2-oxoglutarate (2OG)-dependent halogenases catalyze highly selective C-H halogenation. BesD is a non-heme Fe(II)/2OG halogenase that performs regio- and stereoselective chlorination of the l-lysine (l-Lys) substrate. Understanding the mechanism by which halogenation is favored over canonical hydroxylation is essential for guiding enzyme engineering efforts aimed at converting hydroxylases into halogenases. Here, we combine molecular dynamics (MD) and hybrid quantum mechanics/molecular mechanics (QM/MM) calculations to elucidate the origin of chlorination selectivity in BesD and variants derived from a homologous hydroxylase. Our results indicate that, although the initial inline Cl-Fe(III)-OH intermediate is inherently predisposed toward hydroxylation, it undergoes a two-step isomerization in …

Lowland Tropical Forests Remain A Methane Sink Under Warming And Long-Term Hurricane Disturbance Recovery, Gabriele Larocca Conte, Lucia Zuvela, Rachel Cruz-Pérez, Tatiana Barreto-Vélez, Nibia Becerra-Santillan, Sophia F. Campbell, Hieu P. Chu, Trung Dam, Iana F. Grullón-Penkova, Miriam Kleit, Deyaneira A. Ortiz-Iglesias, Laura C. Rubio-Lebrón, Molly A. Cavaleri, Sasha C. Reed, Debjani Sihi, Tana E. Wood, Christine S. O'Connell

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Methane (CH₄) is a potent greenhouse gas, and tropical forests account for roughly one–third of global atmospheric CH₄ uptake by soils. Projected warming and more frequent hurricanes in these ecosystems may alter soil CH₄ sink strength, as warmer and wetter soils enhance methanogenesis activity. We measured soil CH₄ and CO₂ efflux during the calendar summer months of 2023 and 2024 alongside continuous records of soil moisture, soil and air temperature, and precipitation in an in–situ warming experiment (TRACE) located in a lowland tropical forest in Puerto Rico, six to seven years after Hurricanes Irma …

Examining The Ligands, Location, And Function Of Toll-Like Receptor 10, Kiefer Keanu Tam

Master's Theses

Toll-like receptors are a class of innate immune pattern recognition receptors that detect pathogen-associated molecular patterns and regulate downstream inflammatory responses. Toll-like receptor 10 remains the only human TLR whose ligand specificity, cellular localization, and immunological function are not fully defined. Emerging evidence suggests that TLR10 may play an anti-inflammatory role and can heterodimerize with TLR2 to modulate immune signaling. Previous studies from our laboratory demonstrated that stimulation with heat-killed Mycobacterium tuberculosis promotes TLR2-TLR10 heterodimerization and trafficking to the cell surface. In this study, we expanded our ligand panel to include additional gram-positive bacteria, particularly anti-inflammatory probiotic species, to further …

Associations Between Neighborhood Disadvantage, Cannabis Use, And Patient-Reported Outcomes Among Patients With Cancer, Brittney Greene, Shilpa Ghosh, Craig Colder, Salimah Meghani, Brooke Worster, Rebecca Ashare

Kimmel Cancer Center Faculty Papers

INTRODUCTION: Cannabis use is proliferating among oncological populations. However, research is limited on whether cannabis routes and sources are associated with neighborhood disadvantage and whether it moderates the relationship between neighborhood disadvantage and patient-reported outcomes (PROs). This analysis evaluates the relationship between neighborhood disadvantage and cannabis source and route, and their association with PROs.

METHODS: Analyses included 106 patients with cancer from varying levels of neighborhood disadvantage. Logistic regressions tested the association of neighborhood disadvantage with cannabis source (i.e., regulated vs. unregulated) and route (i.e., inhaled vs. consumed/other formulations). Multilevel regressions tested the association of neighborhood disadvantage with PROs (e.g., …

Linking Fishery Productivity To Child Health In The Coastal Tropics, Francisco Flores-Mejia

Master's Theses

Fish are a primary source of calories, macronutrients, and income for coastal communities around the world, but overfishing and environmental changes have dramatically reduced productivity in the majority of small-scale fisheries. The social costs of these losses are believed to be large, particularly in poorer communities, but most estimates of fishery productivity effects on households are contextual and difficult to generalize. We combine a remote sensing measure of pelagic fishery productivity with geolocated child health and growth data from 34 countries in the coastal tropics. We estimate that the difference between sustainedly good versus bad fishing conditions corresponds up to …

The Feather Of The Quill: How Folklore Shapes Human Relationships With Wildlife, Taylor Breeanne Nelson

Master's Theses

This thesis examines how folklore and cultural phenomena shape human relationships with wildlife, arguing that the stories a society tells about animals are not merely reflective of its values but are constitutive of them. Drawing on narrative research methods sourced from literature and academic journals and interviews with academics, conservationists, and community members, this project examines the role of animal folklore.

I discuss how narratives around wildlife evolved alongside the development of the United States, arguing that the beginnings of mainstream American conservation not only displaced existing communities but also erased the sophisticated human-animal relationships their traditions had long sustained. …

Investigating Cryptic Diversity In The Hawaiian Endemic Plant, Psychotria Mariniana (Rubiaceae), Uyen Thi Hoang Nguyen

Master's Theses

Islands, with their isolation and steep environmental gradients, serve as natural laboratories for studying speciation. Molecular phylogenetic and population genetic methods utilizing Next-Generation Sequencing (NGS) have revolutionized our ability to document patterns of genetic divergence and diversity. Cryptic diversity, genetically distinct populations that were previously unrecognized as unique, and cryptic speciation, where divergent genetic populations may be deserving of status as unique species, have been observed in many taxa. The Hawaiian Islands provide an ideal setting for studying divergence and speciation due to their extreme isolation, known ages, and volcanic origin. Previous work has investigated the evolutionary relationships of the …

La Maquiladora De Sueños Is Where The “American Dream” Ends: The Socio-Cultural Impact Of Hai(T)Ijuanenses In The United States-México Borderlands, Pedro Aleman Perfecto

Master's Theses

Historically, Tijuana has been the destination for migrants who have been left out from the United States, Mexico, and the rest of the world. The city is at the epicenter of globalization where many transit, leave, and arrive. Sometimes considered a “third country” due to its binational and bicultural identity with its sister city, San Diego, California. The growing number of Haitian refugees that arrived in Tijuana in the mid 2010s to seek asylum in the United States overwhelmed the city’s infrastructure and left the Haitian community vulnerable, yet it created new opportunities and reshaped new identities in the region. …

Structure And Diversity Of Play Behavior In Juvenile Belding's Ground Squirrels, Paul O'Driscoll Ii

Master's Theses

Play behavior is ubiquitous among juvenile mammals and can promote motor, social, and cognitive development, providing multiple adaptive benefits to young animals in some cases. The structure of play can be linked to the benefits it confers on individuals. I evaluated the structure of play in juvenile Belding’s ground squirrels (Urocitellus beldingi), a species for which multiple adaptive benefits of play have been identified. I compared juvenile play in U. beldingi to adult sexual and aggressive behavior to determine and classify similarities between juvenile play and adult behavior. I evaluated diversity in the behaviors expressed during play interactions and diversity …

Improving Human-Wildlife Coexistence: An Ecological And Educational Approach To Rewilding Grizzly Bears (Ursus Arctos Horribilis) In California, Amanda C. D. Rosales

Master's Projects and Capstones

Megafauna extinction during the Holocene has been both caused and amplified by climatic changes and human influence. By the last half century, large carnivores were diminished in Europe and the United States, but policies increasingly addressed species decline and their territories expanded. This research examined large carnivore rewilding across the European Union and United States, specifically for rewilding brown bears, Ursus arctos, in historic habitat. Next, case studies for the health status of climate-impacted whitebark pine, Pinus albicaulis, a high energy food for bears, was assessed. Ultimately, research case studies, human perspective surveys, and the California Department of Education content …

Photocatalytic Advanced Oxidative Processes (Aop) As A Promising Agricultural Runoff Treatment Solution For The California Central Valley, Briana Miller

Master's Projects and Capstones

Pesticide pollution in the California Central Valley (CV) is a major concern for aquatic toxicity. This research will determine if photocatalytic advanced oxidation processes (AOP), an emerging water treatment technology, could be implemented within the CV to degrade pesticides. A case study, literature review, comparative analysis, and policy analysis were conducted to identify pesticides of concern within the CV, if photocatalytic AOP can degrade those pesticides, how photocatalytic AOP compares to current technologies, and regulatory challenges with implementing photocatalytic AOP. Between 2019 and 2023, the top 30 most applied pesticides were identified, with 12 chemicals identified as aquatic toxicants, seven …

Increasing Students’ Self-Efficacy In Consuming, Conducting, And Disseminating Neuroimaging Research: Experiences From Teaching Edps 991: Social And Affective Neuroscience, Isabella Starling Alves

UNL Faculty Course Portfolios

Social and emotional factors are critical for learning, being core aspects of the educational  psychology curricula. Recently, neuroimaging has emerged as a powerful tool to  comprehend the neurobiological factors underlying these factors. Yet, many educational  psychologists have low familiarity with neuroscience research. The course EDPS 991:  Social and Affective Neuroscience, from the Department of Educational Psychology at the  University of Nebraska-Lincoln, emerges in this context, training educational psychology  graduate students to consume, conduct, and disseminate findings about how the brain  relates to socioemotional processes. One challenge related to the course is that many  students feel anxious about learning the neuroimaging …

Climate-Driven Maritime Hazards And Marine Fuel Oil Spill Risk In The Northwest Passage, Emily Grace Parker

Master's Projects and Capstones

Shipping activity across the Northwest Passage has increased by 46% since 2011 as climate forcing drives sea ice decline, but associated risks to vessels and the environment are underestimated and rarely examined together. A literature review conducted in this study indicated that by 2070, a 5-month navigation window will expose vessels to increasingly unpredictable hazards as the region transforms from an ice- to wave-dominated regime, with wave heights increasing by 10-13% per decade. Ice hazards persist, and vessels operating in early summer and late fall will be exposed to elevated ice accretion risk that can cause capsizing and marine fuel …

The Role Of Intermittent Nutrient Loading In The San Francisco Bay, Rebecca M. To

Master's Projects and Capstones

A harmful algal bloom in 2022 shattered the illusion that the highly enriched San Francisco Bay is resilient to eutrophication. This event provided justification for the San Francisco Water Board to issue restrictions on nitrogen in wastewater effluent, the largest source of nitrogen in San Francisco Bay. Recognizing San Francisco’s fragile status even with this recent regulation, this study analyzes other anthropogenic sources of nutrient pollution, and it examines nature-based solutions to drawdown nutrient loading. This research utilizes a nutrient budget review to account for nitrogen inputs, a relative source contribution to quantify sanitary sewer overflows, a geospatial analysis to …

Effectiveness Of Wastewater Treatment Technologies For Pharmaceutical Removal In Bogotá, Colombia, Lady Palomino

Master's Projects and Capstones

Pharmaceutical compounds are increasingly detected in urban water systems worldwide, posing significant ecological and public health risks in cities where wastewater treatment infrastructure is insufficient to remove them. This study evaluates the presence of pharmaceutical compounds in Bogotá's wastewater systems, the effectiveness of current treatment technologies for their removal, and the regulatory and monitoring gaps that hinder their management as emerging contaminants of concern. A systematic literature review was conducted to assess the occurrence of pharmaceuticals in municipal and hospital wastewater, as well as in effluents from wastewater treatment plants (WWTPs) and receiving surface waters in Colombia, with particular focus …

Soil Dna-Phosphorus: Method Optimisation And Application Across Uk Soils, Margaret Massam, Daniel Menezes-Blackburn, Mohammed Al Kasbi, Catherine Wearing, Marc Stutter, Courtney D. Giles, Tegan Darch, Timothy S. George, Charles Shand, David Lumsdon, Martin Blackwell, Hao Zhang, Patricia Cooper, Renate Wendler, Lawrie Brown, Philip M. Haygarth

Journal of Agricultural and Marine Sciences

Despite growing recognition of rapid diester P turnover, quantitative data on soil DNA-P across soil types remain scarce due to methodological constraints. This study aimed to investigate the impact of changes in the analytical protocol of a soil DNA-P method developed by Paraskova et al. (2013) on DNA-P recovery and the use of the revised procedure on 32 UK soils on our understanding of DNA-P in soils. The steps of the Paraskova method were tested on two contrasting soils, and a revised version was developed and used to determine the DNA-P levels of 32 UK soils. These findings were then …

Effects Of Combined Application Of Biochar And Nitrogen Fertilizer On The Growth Parameters Of Lemongrass (Cymbopogon Citratus), Ashkan Asgari, Yunes Rameshjan, Babak Jamali, Aminallah Tahmasebi

Journal of Agricultural and Marine Sciences

The synergistic application of biochar and nitrogen fertilizer significantly improves plant growth and soil properties. The present study aimed to evaluate the effect of the application of biochar and nitrogen on the shoot and root of lemongrass in a factorial design within a completely randomized setup. The experiment included three levels of biochar, i.e. 0%, 1%, and 2% (v/v) and 2 levels of nitrogen, i.e. 0 and 1 (g/pot) under greenhouse conditions with 3 replications. The following parameters were measured, plant height, number of tillers, number of leaves, length of the largest leaf, fresh, shoot and root dry weight. The …

Antagonistic Bacterial Isolates Derived From Salt Cedar (Tamarix Nilotica) Suppress Pythium Aphanidermatum Damping-Off In Cucumber Under Glasshouse Conditions, Saba Al-Ghassani, Issa Hashil Al-Mahmooli, Fatma Al-Makhmari, Zainab Al-Balushi, Waleed Al-Busaidi, Mohamed Abdullah Al-Kindi, Khalid Al-Farsi, Abdullah Mohammed Al-Sadi, Rethinasamy Velazhahan

Journal of Agricultural and Marine Sciences

Cucumber (Cucumis sativus L.) damping-off, which is caused by the soilborne oomycete Pythium aphanidermatum, is an extremely damaging disease. An environmentally friendly and safe method of controlling damping-off in cucumber and other vegetable crops is biological control, which employs naturally existing antagonistic microorganisms. In this investigation, bacteria from root tissues (endophytic bacteria) and rhizosphere soil (rhizosphere bacteria) were isolated from Tamarix nilotica (Tamaricaceae), commonly known as salt cedar, and their potential to inhibit P. aphanidermatum and their efficacy in managing damping-off in cucumber under controlled glasshouse conditions were assessed. Ten rhizospheric and six endophytic bacteria with different morphological traits were …

A Governorate-Level Index Of Fisheries And Coastal Habitats In Oman, Ibtisam Al Abri, Jaynab B. Yousuf, Nadir Al-Abri, Fahad Al Rasbi

Journal of Agricultural and Marine Sciences

Oman's fisheries sector, deeply rooted in coastal tradition, is becoming a key pillar in the nation's transition away from oil dependency. With over 3,165 km of coastline and access to three major marine ecosystems, the Arabian/Persian Gulf, Sea of Oman, and Arabian Sea, the country holds vast ecological and economic potential. However, the sustainability and performance of small-scale fisheries (SSF), which represent over 90% of national fishing activity, vary widely across governorates due to environmental stress, infrastructure gaps, and climate vulnerability. This study presents the first governorate-level, multidimensional assessment of fisheries and coastal resources sustainability in Oman. Using a mixed-methods …