Potential of seaweed in Indonesia as an alternative iodine source
The research indicates that iodine-rich seaweed consumption can tackle diseases induced by various free radicals and inflammatory agents.
A Channel Selection Strategy for Energy Harvesting in Cognitive Radio IoT Networks
Energy limitation and spectrum scarcity are becoming two critical issues in the design of Internet of Things networks. Two promising technologies, cognitive radio (CR) and radio frequency (RF) energy harvesting, can be jointly used to improve spectrum and energy efficiency. Thus, energy harvesting, and cognitive radio systems are becoming more inseparable for future IoT networks. This paper analyses the effect of selecting primary user (PU) channel by the secondary users on the performance of IoT networks metrics. Furthermore, we formulate an efficient channel selection strategy that is structured on multiarmed bandit (MAB) problem. The proposed channel selection scheme is based on a distributed channel selection strategy that combines reliable reputation model and multiarmed problem policies. With the proposed channel selection scheme, the SUs finds the best available PUs channels to maximize harvested RF energy. Simulation results validate the superiority of our proposed channel selection algorithm in terms of throughput and energy harvesting rate compared to Goodput based algorithms and ultra-reliability and low latency (URLL) based algorithms. that ensures that the SU’s.
Green Hydrogen & Low Carbon Concrete for Circular Economy at South Sulawesi, Indonesia
At Bantaeng in South Sulawesi a new industrial scale port will be built to serve the KIBA industrial precinct where smelters produce nickel for global electric vehicle battery markets. A 1-2Mtpa low-carbon geopolymer concrete plant is proposed for precast production of some 1,600 port modules as well as other infrastructure requiring some 750,000 cum of concrete and thereafter the plant can be repurposed for other products for local markets such as reef modules and wall panels. Geopolymer concrete can be the replacement for conventional concrete and be made from waste-derived materials thereby having a significantly lower carbon footprint. The plant is designed to be operated by renewable energy and an energy audit estimated that a 1Mtpa geopolymer production plant needs 100-200 GWh pa to operate. This could be served by a renewable energy power station with a mix of wind turbines and solar PV farm producing green hydrogen for energy storage and electric fuel cells. In the option of PV50%+wind50%+hydrogen-storage the total cost was estimated to be $20-30M USD. If electricity is assumed $100/MWh then this is worth $10-20M USD pa and the payback is 15 years approx.
Assessment of building thermal performance with roof top greenery system and bio-phase change materials in the Australian sub-tropical climate
The incorporation of extensive rooftop greenery and bio-phase change materials as building envelopes in subtropical climates has enormous potential to counteract the adverse effects of escalating energy consumption and greenhouse gas emissions. These envelopes are capable of limiting the heat gain, reducing the cooling energy, promoting thermal comfort, and shifting the peak load throughout the day. Its design and effectiveness may differ significantly depending on location and weather. This study investigates the effects of an extensive rooftop greenery system (RTGS) and bio-phase change materials (bio-PCMs) on the thermal performance and energy consumption of buildings in the subtropical climate of Australia. Two identical shipping containers were used as experimental buildings (replicas of small offices), one equipped with RTGS and bio-PCM, whereas the other lacked this feature, that is, a reference bare roof (BR). The experimental investigations were conducted from 3rd September to 8 October 2024. While considering a typical day within the experiment duration, the data showed a temperature difference of approximately 7 °C and humidity difference of 25% at approximately 11am of that day. It was found from the experimental results that buildings with RTGS and bio-PCM as envelopes can save approximately 26.49% of energy in a typical week in September 2024, with a maximum energy saving of up to 32% experienced on a typical day. In terms of thermal comfort, the RTGS with bio-PCM maintained stable temperature and humidity levels that were favourable to standard ideal comfort zone conditions.
Smart Farming – Using weather data to support farmers in tilling their fields most efficiently
using A.I. technology in the agricultural sector; using natural resources efficiently; sustainability
Low Carbon Concrete for Solid Gravity Energy Storage System and a Sustainable Electricity Grid
Construction of Solid Gravity Energy Storage Systems with waste-derived, low-carbon geopolymer concrete solves a major waste management problem for the growing battery minerals industry and enables a sustainable electricity grid. In addition, the SGES system can be scalable for large scale storage systems enabling large scale recycling of waste-derived materials.
Sustainable Energy for Port Construction with Low Carbon Concrete from Industrial Symbiosis at WESTPORT Kwinana & BANTAENG Sulawesi
The contribution of this paper has been to outline a vision of how a Circular Economy could be achieved that enables a new style of Regenerative Development. The limitations have been access to accurate data for energy audit of plant and thus sizing are preliminary estimates only. In future, more data needs to be collected from the various industries so that detailed Homer modelling can be undertaken for sizing the renewable energy system options and payback.
Computers, Mathematics and Engineering as Medium in Creation of Unique and Original Art
The significant contribution of this research is to bridge the gap between techniques found in computing, mathematics and engineering with conventional art techniques to create original art. This is to ensure that human-generate art is tenable in the longterm, as opposed to AI-generated art.
Study of a Hybrid Renewable Energy System to Produce Green Energy For Cooktown – a Far North Queensland
Abstract—Australia’s pledge to net zero in 2050 has seen a
dramatic increase in the use of renewable energy systems, particularly
solar photovoltaic (PV)-wind hybrids. This study aims to optimise
a solar PV-wind hybrid system to power a polymer electrolyte
membrane (PEM) electrolyser to produce green energy for Cooktown
as a case study. This study identifies the current hybrid systems within
the literature, develops a solar PV-wind hybrid system to meet load
demands and optimises the hybrid system through HOMER, reducing
Net Present Cost (NPC) and Levelised Cost of Energy (LCOE). Results
of the project identify that an NPC of AU$56.6 million and LCOE of
AU$0.55/kWh are achievable for a solar PV-wind hybrid renewable
system powering a PEM electrolyser in Cooktown, Far North
Queensland (FNQ). However, electrical output data identifies unmet
loads and capacity shortages, indicating electrical disruptions for the
PEM electrolyser regardless of implementation location. This paper
discusses economic and performance optimisation outcomes, with green
energy and fossil fuel technologies highlighted as possible solutions to
electrical shortages. The solar PV-wind hybrid is compared with its
counterparts, which identified cost differences and electrical production
ability. In conclusion, this project has developed a solar PV-wind hybrid
renewable energy system to power a PEM electrolyser. Economic
optimisation does occur through HOMER, with substantial reductions
in NPC and LCOE. However, performance issues limit the hybrid
system’s ability to meet the electrolyser’s load demands, and further
action is needed for the system to fulfil its electrical load requirements.
Title: Leveraging Web Applications for Enhanced Transportation Mobility: Integrating Taxi Booking and Volunteer Ride Services in Fiji
The significant research contribution of this project is the development of a web-based platform that integrates real-time taxi booking, ride-sharing, and volunteer ride services tailored for Fiji. This innovative solution addresses key challenges in Fiji’s urban transportation, such as traffic congestion, vehicle overuse, and lack of affordable transport for low-income individuals. By promoting environmental sustainability, fostering community engagement through volunteer rides, and leveraging secure online payment systems, this platform contributes to enhancing mobility and reducing greenhouse gas emissions in a unique socio-economic context.