Digital Commons Network^™

Leading The Church Out Of White Supremacy And Toward Biblical Justice And Reconciliation: A Leadership Approach Using The Arc Model, Keenan Tyler

Doctor of Ministry Projects

Problem

Seventh-day Adventist church members need to be equipped to respond faithfully to injustice in their communities, beginning with an understanding as to how to respond to systemic racism rooted in White Supremacy.

Method

This Doctor of Ministry project implemented an adapted form of Jamar Tisby’s ARC model—Awareness, Relationships, Commitment—contextualized for a Seventh-day Adventist theological and ecclesial setting. The immediate goal was to move beyond raising awareness of racial injustice to equipping congregations to actively resist systemic racism and dismantle the lingering influence of white supremacy in church life and mission. Over six interactive sessions, 18 participants engaged in historical, …

Estrategia Para Atraer Y Retener A La Comunidad Hispana De La Primera Iglesia Adventista De Austin, Texas, Hadiel Perugorria

Doctor of Ministry Projects

Problem

The spiritual influence of the Adventist church in contemporary society is facing the challenges of a generation that is increasingly vulnerable and fragmented due to secularism and the ongoing pursuit of alternative sources of meaning. The community resists the commitment to be part of a Christian family where their lives are transformed and their abilities used for the benefit of others.  --The First Hispanic Church of the Seventh-day Adventists of Austin, Texas, faces the same challenge. The work carried out by the congregation was not sufficient to impact and reach the local community. The researcher's investigation during the years …

Conectados Para Crescer: Um Modelo De Capacitação De Discipulado Em Rede Para Aspirantes Ao Ministério Pastoral Da Associação Pernambucana Central, Everon Dias Donato

Doctor of Ministry Projects

Problem

The Central Pernambuco Conference (APeC), the regional headquarters of the Seventh-day Adventist Church (SDA) based in inland Pernambuco, Brazil, develops discipleship as one of its work programs through an organic network of leaders in small groups. -- However, pastoral ministry interns who join this region annually do not receive adequate training contextualized to the specific demands of the APeC discipleship network, which compromises the effectiveness of the initiative. -- Given this scenario, this study focused on developing, implementing, and evaluating a proposal for ministerial training that is contextualized to prepare pastoral ministry interns in the context of the discipleship …

Thinking Artfully With Matter: A Posthuman Enquiry Into The Pedagogical Values Of Sketch-Booking., Melanie Potier

School of Law, Humanities and Social Sciences Theses

Becoming attentive to art practices in terms of what they can do rather than what they are, the writing generates a more tentative-artful engagement with how sketchbooking processes engender more response-able relationship with the world. Exploring the relation between sensation and thought, this exemplification of the speculative potential of force and form, emerges as a powerful resistance to the constraints of the neoliberal education system. Practicing art as immanent doing, Erin Manning’s theory of incipient movement works to develop concepts, such as research-creation, event-time, artfulness and thought in motion, which find expression through the mundanities and ordinary occurrence of the …

The Current Clinical Practice And Experiences In Buccal Midazolam Prescribing In Community For Status Epilepticus Termination In The United Kingdom: The Rescue Epilepsy Medication And Training (Remit) Study, Rohit Shankar

Peninsula Medical School

Background: Epilepsy is one of the commonest neurological conditions worldwide and confers a significant mortality risk, partly driven by status epilepticus (SE). Terminating SE is the goal of pharmaceutical rescue therapies. This survey evaluates UK-based healthcare professionals’ clinical practice and experience in community-based rescue therapy prescribing. Methods: A cross-sectional, 21 item questionnaire composed of Likert-style and free-text based questions was administered online. It was distributed through a non-discriminative snow-balling methodology to members of the Epilepsy Specialist Nurses’ Association (ESNA) and the British International League Against Epilepsy (ILAE). Quantitative analysis used Chi-squared, Fishers’ exact and Mann-Whitney tests. Qualitative data were analysed …

Care‐Ful Encounters: A Case For Empathetic Youthful Encounters With Coastal Environments, Mark Holton

School of Geography, Earth and Environmental Sciences

This paper extends discourse of environmental stewardship and coastal management by examining the intersecting and overlapping relationships between notions of care and encounter in generating and maintaining forms of environmental empathy among young people at various socio-spatial scales. Exploring ‘care-ful encounters’ matters in terms of developing new ways of understanding how the choreographies of care and self-care shape, and are shaped by, encounters with human and non-human others, and prompts critical engagement and reflection with care as felt and experienced, that could otherwise be considered as distanced and ‘over there‘. Two key contributions emerge – first, that the combined role …

Metal Contamination In Sediments Of An Estuary Impacted By Discharges Of Antifouling Waste (Yealm, Southwest England), Oliver Bradley, Gillian A. Glegg, Geoffrey E. Millward, Andrew Turner

School of Geography, Earth and Environmental Sciences

The Yealm is a small, protected estuary in southwest England. A paint-testing laboratory on the estuary operated from the 1920s until 2011 but sometime in 2015 or 2016, an unauthorised discharge of antifouling waste occurred. In this study, concentrations of metals and forms thereof associated with contemporary and historical antifouling formulations (As, Cu, Hg, Pb, Sn, Zn, organic Hg, organic Sn), along with other elements of geochemical or anthropogenic interest, were measured in fractionated (<180 μm) surface sediments at different distances from the discharge. Close to the discharge, concentrations of organic-Sn, representative of tributyltin, exceeded a level that requires material disposal in landfill; here and upestuary, concentrations of Cu and Hg exceeded respective predicted effect levels for estuarine sediments. Analysis of paint flakes isolated from sediments outside the laboratory revealed similar chemical signatures (high concentrations of Cu in most flakes and high levels of Hg and Sn in several cases), consistent with antifouling paint being the cause of contamination. Concentrations of Cu, Hg and organic Sn in sections of a dated core sampled close to the discharge exhibited enrichment since the opening of the laboratory nearly 100 years ago, with distinctive peaks for Hg and organic Sn coincident with periods shortly after these biocidal metals began to be phased out or restricted. These observations suggest that historical waste discharges may have been important and that any remediation measures will be challenging. The general observations might also be applicable to other facilities where contemporary and legacy antifouling waste is commonly discharged to sediments (e.g., boatyards).

Salinity Controls On Steel Biocorrosion Relevant To The Disposal Of High-Level Radioactive Waste, M. N. Rose, C. Boothman, S. Shaw, K. Morris, D. L. Engelberg, M. T. Bailey, J. R. Lloyd

School of Geography, Earth and Environmental Sciences

In a geological disposal facility (GDF) for spent fuel and high-level radioactive waste, the canister serves as one of the main engineered barriers. The resistance of the canister to degradation processes such as microbially influenced corrosion (MIC) needs be characterised to support GDF environmental safety cases. Here the impacts of salinity on sulfate-reducing bacterial (SRB) activity and associated MIC were explored in 84-day batch incubations at 30 °C. A 5 % standard bentonite slurry (MX80) in a low-salinity (0.1 g l⁻¹ NaCl) artificial groundwater containing lactate added as an electron donor provided suitable conditions for the proliferation of SRB. …

Conservation Planning For Promoting Ecosystem Service Provisioning Outside Protected Area Networks, Florence Godfrey Tarimo, Francis Moyo, Claire Kelly, Linus Kasian Munishi

School of Geography, Earth and Environmental Sciences

Among factors that contribute to global biodiversity loss, habitat loss through unsustainable land use and land cover changes has gained prominence, with impacts being exacerbated by increasing human populations. Establishing protected area networks (PANs) is strongly advocated by national and international mechanisms, such as the Convention on Biological Diversity (CBD), as a primary strategy to guide biodiversity conservation and management; however, this can undermine conservation efforts outside protected areas. Understanding how people and biodiversity overlap and interact outside protected area networks (OPAN areas) is essential for setting realistic, sustainable targets to guide biodiversity conservation and ecosystem service provision beyond PAN. …

Anthropogenic Microfibres And Other Microplastics In The Sediments And Soils Of A Small, Moorland Reservoir (Burrator, Southwest England), Alexandra Sutton, Andrew Turner

School of Geography, Earth and Environmental Sciences

Little is known about the sources, transport and fate of anthropogenic microfibres (AMFs) and other microplastics (MPs) in dammed reservoirs. The aim of this study was to determine the concentrations, characteristics and pathways of anthropogenic particles in sediments and soils from a small, upland reservoir (Burrator, southwest England) and its influent and effluent river. Surface and subsurface (5 cm) sediments and soils were collected and characterised for organic matter and key geochemical (Ca, Fe and Rb) and anthropogenic (Pb and Zn) elements. AMFs and MPs were isolated from samples by flotation in ZnCl₂ and analysed microscopically; a selection was …

Analytical Inconsistencies In The Measurement And Reporting Of Ip25, Ipso25 And Related Biomarkers For Paleo Sea Ice Reconstruction, Simon T. Belt, Lukas Smik

School of Geography, Earth and Environmental Sciences

IP₂₅ and related biomarkers are commonly used for Arctic and Antarctic sea ice reconstruction. With a growing number of laboratories performing their measurement, we reviewed many publications spanning the period 2007–2024 in order to assess analytical rigour. We found a number of common shortfalls in analytical protocols, or at least how they are reported, which may have important implications for future synthesis studies and meta-data analyses. Here, we outline some of these shortcomings and provide suggestions of how to improve both data acquisition and reporting.

Productivity History Of The Central Okhotsk Sea And Northeast Russia During The Mid-Pleistocene Transition, Li Lo, Wei Zhu Chen, Julie Lattaud, Yi Hsueh Tsai, Simon T. Belt, Lukas Smik, Yuen Tung Kiki Wan

School of Geography, Earth and Environmental Sciences

Biological productivity, shaped by climate and environmental factors, is critical to climate feedback mechanisms and the global carbon cycle. This study investigates the measurement of six phytosterols (β-sitosterol, stigmasterol, campesterol, dinosterol, epi-brassicasterol, and 24-methylene cholesterol) from core MD01-2414 in the central Okhotsk Sea, covering the past 1.5 million years (Ma). These sterols serve as proxies for terrestrial and marine productivity in the central Okhotsk Sea and northeast Siberia. Sterol concentrations reflect global glacial/interglacial cycles between 1.2 and 0.6 Ma, with higher and lower values during interglacial and glacials intervals, respectively. X-ray fluorescence (Ba/Ti) and total organic carbon/total nitrogen (TOC/TN) ratios …

Tracking Palaeotemperatures In Coniacian–Maastrichtian Seas, Gregory D. Price, Bryan Low Kai Sheng

School of Geography, Earth and Environmental Sciences

In this study the stable isotopes of belemnites, are presented from the Coniacian–Maastrichtian interval (∼76–66 Ma) derived from the chalks of Yorkshire and Norfolk, UK, deposited on the western North Atlantic shelf. Cathodoluminescence and elemental geochemistry of the belemnites reveals that most of the rostra were well preserved. If interpreted in terms of temperature, our oxygen isotope record reveals that during the Coniacian (at ∼43 °N) the climate was relatively warm, with maximum mean temperatures of ∼26 °C, followed by cooling to <∼21 °C during the Campanian and Maastrichtian. This overall stratigraphic trend is similar to other records, suggesting that the cooling pattern was not a regional trend and, therefore, driven predominantly by global mechanisms. Within our belemnite data, we also observe a decline in δ¹³C at the Campanian- Maastrichtian boundary, again consistent with other records. This trend has been interpreted as …

Tsunami Boulder Transport In Coastal Environments: Insights From Physical Experiments And Dimensional Analysis, Storm Roberts, Alison Raby, Sarah Boulton, William Allsop, Alessandro Antonini, Ivo Van Balen, David Mcgovern, Keith Adams, Ian Chandler, Jonas Cels, Irene Manzella

School of Geography, Earth and Environmental Sciences

Coastal boulder deposits hold the potential to aid in the reconstruction of past extreme wave events. However, commonly used hydrodynamic equations for calculating wave heights from transported boulders can be inaccurate. New and alternative methods need to be explored in an interdisciplinary way to ensure a more complete picture of the phenomenon of boulder transport is achieved. Through the use of a physical experiment, this study aims to investigate the influence of different tsunami wave types, wave parameters and boulder shapes on boulder transport distance. The experimental results also allow for a novel application of dimensional analysis to enable comparisons …

Global And Regional Estimation And Evaluation Of Suitable Roof Area For Solar And Green Roof Applications, Diana Ürge-Vorsatz, Souran Chatterjee, Luisa F. Cabeza, Gergely Molnár

School of Geography, Earth and Environmental Sciences

Buildings contribute to 40% of energy consumption and 30% of CO₂ emissions in 2019 globally, therefore it is necessary to exploit different solutions to decrease the corresponding energy demand, including green and cool roofs as well as on-site energy generation. To evaluate the potential of such technologies, one major input data for models and calculations is the available roof area, yet the literature shows a huge knowledge gap in this regard. Therefore, this paper contributes to filling this gap by estimating the roof availability over the period 2022–2060, using the detailed regional projections of the BISE (Building Integrated Solar …

Changes In The Spatiotemporal Patterns Of Covid-19 In Japan From 2020 Through 2023, Atsuna Tokumoto, Kazuaki Jindai, Tomoki Nakaya, Mayuko Saito, Clive E Sabel, Hitoshi Oshitani

School of Geography, Earth and Environmental Sciences

BACKGROUND: The spread of coronavirus disease 2019 (COVID-19) varied among countries. The spatiotemporal trends of COVID-19 in Japan remain understudied. Therefore, this study aimed to conduct a detailed investigation of the spatiotemporal evolution of infections/deaths across prefectures in Japan, to analyze the changing patterns of COVID-19 circulation in metropolitan and nonmetropolitan areas.

METHODS: We extracted data from nationally represented open-source data from January 15, 2020, to May 9, 2023, and we calculated the incidence rate of infection and the mortality. Further the ratios were obtained by dividing those rates in prefectural level by those in national level to make them …

Canopy Functional Trait Variation Across Earth’S Tropical Forests, Jesús Aguirre-Gutiérrez, Sophie Fauset, Sami W. Rifai, Xiongjie Deng, Hans Ter Steege, Eleanor Thomson, Jose Javier Corral-Rivas, Aretha Franklin Guimaraes, Sandra Muller, Joice Klipel, Angelica F. Resende, Göran Wallin, Carlos A. Joly, Katharine Abernethy, Stephen Adu-Bredu, Celice Alexandre Silva, Edmar Almeida De Oliveira, Danilo R. A. Almeida, Esteban Alvarez-Davila, Gregory P. Asner, Timothy R. Baker, Maíra Benchimol, Lisa Patrick Bentley, Erika Berenguer, Lilian Blanc, Damien Bonal, Kauane Bordin, Robson Borges De Lima, Sabine Both, Jaime Cabezas Duarte

School of Geography, Earth and Environmental Sciences

Tropical forest canopies are the biosphere’s most concentrated atmospheric interface for carbon, water and energy1,2. However, in most Earth System Models, the diverse and heterogeneous tropical forest biome is represented as a largely uniform ecosystem with either a singular or a small number of fixed canopy ecophysiological properties3. This situation arises, in part, from a lack of understanding about how and why the functional properties of tropical forest canopies vary geographically4. Here, by combining field-collected data from more than 1,800 vegetation plots and tree traits with satellite remote-sensing, terrain, climate and soil data, we predict variation across 13 morphological, structural …

Determination Of Titanium Speciation In Consumer Plastics By Raman Microspectroscopy, Johanna Brazard, Takuji B.M. Adachi, Andrew Turner, Montserrat Filella

School of Geography, Earth and Environmental Sciences

The main component of objects made of plastic is an organic polymer matrix, but plastics also contain a wide range of other chemicals, such as additives, processing aids and unintentionally added substances. At present, the scientific and regulatory communities face challenges due to the lack of access to basic information on their quantity and identity, which is crucial in relation to potential toxicity, management, recycling, environmental fate and resource uses. Moreover, an additional problem is that some additives, such as titanium oxide (TiO₂), can be present in different crystallographic forms, which makes it necessary to characterise not only …

A Systematic Review Of Biomonitoring Microplastics In Environmental Matrices: Emphasis On Airborne Particles, Dry Deposits, And Comparative Analysis With Traditional Methods, Faezeh Jahedi, Neamatollah Jaafarzadeh Haghighi Fard, Andrew Turner

School of Geography, Earth and Environmental Sciences

The use of plastics continues to rise each year due to their versatility and essential role in industries like manufacturing, agriculture, and food packaging. However, plastics present a serious environmental challenge because they take over 500 years to decompose. During this time, they break down into tiny particles known as microplastics (MPs), which are now found everywhere, water, soil, and even the air we breathe. Recently, researchers have even detected MPs in clouds, making their presence in the atmosphere a growing concern for both the environment and public health. Traditional methods for sampling MPs in the air, such as active …

Interactions Of Anthropogenic Microfibres With The Marine Macroalga, Ulva Lactuca, Adam Collins, Andrew Turner

School of Geography, Earth and Environmental Sciences

Little information exists on the interactions between microfibres (MFs) and marine macroalgae. In this study, the translucent green seaweed, Ulva lactuca, has been exposed to ∼2 mg L⁻¹ suspensions of MFs prepared from dryer lint under controlled conditions, with MFs on the alga surface and remaining in seawater subsequently counted and characterised. MFs were mainly <2 mm and cellulosic, and contained various additives and chemicals used in textile treatment. Interactions of MFs with U. lactuca were spatially heterogeneous but correcting for pre-existent MFs on the surface, mean trapping efficiencies on a dry mass and surface area basis were 252 mL g⁻¹ and 0.858 mL cm⁻², respectively. Despite this heterogeneity, there was evidence of differential trapping based on fibre colour and length. Interactions between the amphiphilic algal surface and MFs are likely both hydrophobic and electrostatic and are not fully reversible, with only …

Tolerance Of Ambiguity And Psychological Wellbeing In Newly Qualified Doctors: An Analysis Over Multiple Time Points, Tom Gale

Peninsula Medical School

Introduction: There is evidence of an association between tolerance of ambiguity and psychological wellbeing in doctors, but this relationship is not well understood. We explored this relationship, and the individual or workplace factors moderating it, in a population of newly qualified doctors. Methods: We examined the experiences of newly qualified doctors in the UK as they started a novel interim role (Time 1) and later moved into foundation year 1 roles (Times 2 and 3) during the COVID-19 pandemic. Doctors completed the Tolerance of Ambiguity of Medical Students and Doctors scale (TAMSAD Range: 0–100), the Perceived Stress Scale (PSS: 0–40), …

Systematic Review Of Paediatric Sudep And Epilepsy-Related Deaths To Inform A Safety Counselling Checklist For Clinical Practice, Rohit Shankar

Peninsula Medical School

BackgroundOne in 200 children - in the UK have epilepsy. Approximately, 1 in 1,000 children with epilepsy die yearly from Sudden unexpected death in epilepsy (SUDEP), a leading cause of death in epilepsy. Various risk factors contributing to epilepsy mortality particularly SUDEP, some modifiable, have been identified. Structured discussion of risks results in behavioural change that reduces individual risk factors.AimTo investigate and collate risk factors for SUDEP and epilepsy mortality in children to propose a structured communication tool (“Checklist”) for person centred communication.MethodsA Systematic review for children’s epilepsy mortality risk factors was conducted. The search strategy was developed by clinical …

Autolyzed Brewer's Yeast Enhances Growth And Intestinal Health In Early Life Stages Of Nile Tilapia (Oreochromis Niloticus L.), Sheu Odu-Onikosi, Taofik Momoh, Ben Eynon, Nicola Pontefract, Victor Kuri, Holger Kühlwein, Daniel Merrifield

School of Biological and Marine Sciences

The early life stages of fish are critical for determining the overall productivity and sustainability of aquaculture operations. This study investigated the effects of dietary autolyzed brewer's yeast (ABY) on the growth performance and intestinal health of Nile tilapia fry (Oreochromis niloticus). A 35-day feeding trial with 480 Nile tilapia fry across 12 experimental tanks tested the effects of diets supplemented with 1, 2, and 4 g/kg of ABY, with a control diet for comparison. The results indicated that the diet which had 1 g/kg ABY supplementation (ABY1) significantly enhanced the weight gain and specific growth rate (SGR) while reducing …

Mind The Gap - The Need To Integrate Novel Plankton Methods Alongside Ongoing Long-Term Monitoring, Matthew M. Holland, Luis Felipe Artigas, Angus Atkinson, Mike Best, Eileen Bresnan, Michelle J. Devlin, Dafne Eerkes-Medrano, Marie Johansen, David G. Johns, Margarita Machairopoulou, Sophie Pitois, James Scott, Jos Schilder, Rowena Stern, Karen Tait, Callum Whyte, Claire Widdicombe, Abigail Mcquatters-Gollop

School of Biological and Marine Sciences

Changes in plankton have important implications for ecosystem services, including supporting fish stocks, carbon sequestration, nutrient cycling, and oxygen production. Standard long-term plankton monitoring relies on light microscopy to identify and count plankton taxa, with methods fully supported by international standards, providing high quality trusted data. Novel methods, including imaging and molecular, offer means of collecting select types of plankton data efficiently, filling targeted knowledge gaps left by standard monitoring and generating a more complete picture of plankton dynamics. Standard and novel monitoring methods present different advantages and costs, positioning their suitability to address different management needs. Standard plankton monitoring …

Predicting Dune Evolution On A Regional Scale For Coastal Management, Liane M. Brodie, C. Stokes, G. Masselink, A. Konstantinou, T. Scott, T. Poate

School of Biological and Marine Sciences

Dunes provide a range of ecosystem services, including natural resilience against coastal flooding, and it is essential for proactive coastal zone management to forecast future dune behaviour as sea levels rise. However, dunes exhibit dynamic behaviours over a wide range of spatial and temporal scales, posing challenges for predicting their evolution. Here we demonstrate a high degree of variability in contemporary dune behaviour along a single coastal region, across 31 sites in Cornwall, southwest England. Rates of change varied widely, with sediment loss ranging from −12.4 m³/m/yr to a gain of +5.1 m³/m/yr, and dune retreat/advancement ranging from −3.7 m/yr …

The Impact Of Led Light Spectra On The Growth, Yield, Physiology, And Sweetness Compound Of Stevia Rebaudiana, Naofel Aljafer, Abdullah Alrajhi, Toby Anderson Von Trampe, William Vevers, Sophie Fauset, Hail Zuhir Rihan

School of Biological and Marine Sciences

This study investigated the effects of several light spectra on Stevia rebaudiana, analysing growth parameters, yield, and physiological responses within a controlled-environment agriculture (CEA) system. The experimental design involved different light treatments, including specific combinations of blue (435 nm and 450 nm), red (663 nm), and ultraviolet (UV) wavelengths (365 nm), to determine their impact on morphological development and biochemical properties, particularly focusing on the production of the sweetening compounds stevioside and rebaudioside A. Stevia rebaudiana plants cultivated from cuttings sourced from a reputable UK nursery (Gardener’s Dream Ltd., Glasgow, UK) were subjected to these spectral treatments over a period …

Hydrological Repair And Invasive Grass Removal Restore Rhizophora Racemosa Mangrove Communities In West Africa, Claudia M Agraz Hernández, Ebénézer Houndjinou, Jordan E Reyes Castellanos, Carlos A. Chan Keb, Juan Osti Saénz1, Julio C. Chávez Barrera, Janique Etienne, Romain L Glèlè Kakaï, Robert Puschendorf

School of Biological and Marine Sciences

Mangrove ecosystems face significant threats from climate change and human activities. In West Benin, the invasive grass Paspalum vaginatum disrupts sedimentation and hydrology, creating anoxic conditions and nutrient imbalances. To address this, we implemented a cost-effective restoration strategy focused on hydrological repair, engaging local communities to excavate 26 artificial channels and clear 19 existing ones, restoring tidal flow to 30 ha of degraded mangrove forest. Of this, 20 ha were planted with Rhizophora racemosa propagules, while 10 ha remained unplanted due to unsuitable micro-topographic conditions. This intervention, costing $1394.3 USD per hectare, adjusted sediment levels to match natural micro-topography, enabling …

Practical Application Of Artificial Intelligence For Ecological Image Analysis: Trialling Different Levels Of Taxonomic Classification To Promote Convolutional Neural Network Performance, Amelia E.H. Bridges, Eleanor Cross, Kyran P. Graves, Nils Piechaud, Antony Raymont, Kerry L. Howell

School of Biological and Marine Sciences

The integration of artificial intelligence (AI), particularly convolutional neural networks (CNNs), into ecological research presents new opportunities for the automated analysis of image-based data. This study explores the practical application of CNNs for ecological image analysis by trialling annotation to different levels of taxonomic classification to determine their impact on model performance. We systematically compare various annotation strategies, evaluating their effects on the accuracy of CNNs in ecological contexts; as well as considering the feasibility of manually annotating training data to different levels. We demonstrate that variation in annotations groupings (animal, phylum or morphology) has little impact on model performance, …

Ecotoxicological Effects Of Sunscreen Derived Organic And Inorganic Uv Filters On Marine Organisms: A Critical Review, Anneliese A. Hodge, Frances E. Hopkins, Mahasweta Saha, Awadhesh N. Jha

School of Biological and Marine Sciences

Sunscreens are topical personal care products that provide protection against the sun's ultraviolet A (UVA) and ultraviolet B (UVB) radiation. Ultraviolet (UV) filters are compounds added to sunscreens to block, absorb, or reflect the sun's UV rays, but are of major emerging concern due to their widespread use and global distribution. They pose a significant risk to marine organisms owing to their chemical properties, including high lipophilicity which increases their bioavailability. The present review identifies and summarises the factors that contribute to UV filter pollution, their sources, pathways, and effects on marine organisms. We identify and evaluate the current knowledge …

New Ethereum-Based Distributed Pki With A Reward-And-Punishment Mechanism, Chong Gee Koa, Swee Huay Heng, Ji Jian Chin

School of Engineering, Computing and Mathematics

This paper explores the critical role of Public Key Infrastructure (PKI) in ensuring the security of electronic transactions, particularly in validating the authenticity of websites in online environments. Traditional Centralised PKIs (CPKIs) relying on Certificate Authorities (CAs) face a significant drawback due to their susceptibility to a single point of failure. To address this concern, Decentralised PKIs (DPKIs) have emerged as an alternative. However, both centralised and decentralised approaches encounter specific challenges. Researchers have made several attempts using blockchain-based PKI, which implements a reward and punishment mechanism to enhance the security of traditional PKI. Most of the attempts are focused …