Field Study Research Articles

The Integration of Phosphorus-Solubilizing Rhizobacteria, Eisenia fetida and Phosphorus Rock Improves the Availability of Assimilable Phosphorus in the Vermicompost

Due to increasing soil degradation caused by unsustainable agricultural practices and the continued demand for quality food for the human population, it is imperative to find sustainable strategies for high-quality food production. For this reason, the objective of the present study was to evaluate the interaction between the factors of consortium of phosphorus-solubilizing rhizobacteria, addition of phosphate rock and worm load in horse manure to produce an organic fertilizer fortified with phosphorus. For this, consortia of phosphate-solubilizing rhizobacteria of the genus Bacillus (Bacillus aryabhattai, Bacillus subtilis and Bacillus cereus) isolated from the rhizosphere of Distichlis spicata were inoculated. Igneous phosphate rock (0 and 2%) was added in the vermicomposting process (with 25 and 50 g of E. fetida worms per kg of horse manure). The results obtained show that there is a significant interaction between the factors of inoculation with bacterial consortia (1 × 108 CFU mL−1), phosphate rock (2%) and earthworm biomass (50 g kg−1 of manure), and that this interaction promotes the production of assimilable forms of phosphorus for plants (such as monobasic phosphate ions H2PO4−1 or dibasic phosphate ions HPO4−2) within the vermicomposting process, having as a product an organic substrate supplemented with the optimal nutritional requirements for the development and growth of crops. This work can serve as a basis to produce high-quality organic fertilizer. However, field studies are required in order to observe the impact of vermicompost on the yield and quality of the fruits, and it can be compared with other types of fertilizers and the relevance of their use in different types of climates.

Rhamnolipids Enhance Bioremediation of Petroleum-Contaminated Soil

_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 215952, “Enhancing Bioremediation of Petroleum-Contaminated Soil Using Rhamnolipids: A Combined Laboratory and Field Study,” by Pan Ni, Lehigh University; Yonglin Ren, SPE, Stepan Oilfield Solutions; and Derick G. Brown, Lehigh University, et al. The paper has not been peer reviewed. _ Hydrocarbon spills can occur at various stages of the oil and gas exploration and production process. Treating these spills onsite to avoid more-expensive excavation and incineration processes would be beneficial. The study outlined in the complete paper aims to optimize the use of rhamnolipid biosurfactants for enhancing the bioremediation of hydrocarbon-contaminated soil. The goal of this work was to explore the effects of rhamnolipid application on hydrocarbon degradation rate under both laboratory and field conditions and to examine the effects of this treatment on the indigenous soil microorganism population. Introduction The authors write that, to the best of their knowledge, previous research studies on rhamnolipid-based soil remediation focused on either laboratory or field tests and that comparison between laboratory-scale and field-scale tests is overlooked but necessary for practical applications. Materials and Methods Materials and Chemicals. The soil used for this work (23 kg for the laboratory test, 10 metric tons for the field test) was obtained from a contaminated site in Longford Mills, Canada. The soil properties are presented in Table 1 of the complete paper. The rhamnolipid stock solution featured 9.8 wt% rhamnolipid blends in deionized water. Another commercial remediation agent (enzyme-based) was used in the field test to compare with the performance of rhamnolipid. Ammonium chloride (NH4Cl) and potassium hydrogen phosphate (K2HPO4) also were used along with sodium hydroxide (NaOH). Experimental Setup. Both laboratory and field tests were ex-situ tests using simulated soil piles. The laboratory test was conducted for 193 days. For the laboratory experiments, an aerobic/anaerobic respirometer system equipped with a low-temperature incubator was used to monitor the in-situ oxygen uptake inside eight reactors (Fig. 1). Each reactor contained 250 g of soil with rhamnolipid doses of 0, 0.1, 0.5, and 1 g/kg. The temperature was set to 25°C. Inside each reactor was placed 10 mL of 4-M NaOH in a 20-mL glass beaker to adsorb the produced CO2. A parallel set of eight reactors was prepared and operated under the same conditions. The nutrients of nitrogen and phosphorous (NH4Cl and K2HPO4) were added at specific times based on the oxygen uptake rate monitored by the respirometer. To avoid the possible inhibition of the microbes in the soil as a result of high ionic strength (greater than 160 mM) in the soil pore water, NH4Cl and K2HPO4 were added so that the molar concentration in the soil pore water did not exceed 100 mM. The field test is being conducted in Longford Mills, Ontario, Canada, and is ongoing at the time of writing. For the field test, 10 metric tons of soil were mixed to achieve homogeneity before the preparation of the soil piles. Five different treatment conditions were examined using duplicate soil piles (10 piles total), with each consisting of 1 metric ton of soil. Nutrient addition was similar to that used in the laboratory tests. Temperature and moisture were monitored every few days at five points in each soil pile, and the pH was monitored once every month at five points.

Evaluation of accurate measurement methods for radon exhalation rate with advection effect and application in field

In decommissioning of a uranium tailings pond, radon exhalation rates on a beach surface should meet regulatory standards. Accurate measurements of the radon exhalation rate are demanded. However, current studies fail to consider the impact of advection under temperature variations or pressure gradients caused by gas movement on measurements using an accumulation chamber. Two proposed methods were therefore evaluated to accurately measure radon exhalation rates on the loose medium surface under advective conditions. Repeated experiments were conducted on a laboratory experimental platform filled with uranium tailings sand under advective flow rates of 0.03 and 0.3L/min to validate the stability and reliability. Deviations between measured and true values were 0.1–6.1% and 6.3–29.2% for the two methods, respectively. Subsequently, numerical simulation was used to analyze defects of traditional methods and mechanisms of the new methods. In a field study, all methods were compared, and a predictive map of radon exhalation rates was created using interpolated data from 20 random sites using the new method. Results from the proposed methods, compared with traditional ones, were closer to true values under advective conditions, and accurate assessment of beach surface treatment was expected. Environmental ImplicationRadon, a naturally occurring radioactive gas, is exhaled from radium-containing porous media and is present in indoor and outdoor environments, posing potential risks to humans. In decommissioning uranium tailings pond, radon exhalation rates on a beach surface must meet regulatory standards. However, traditional chamber-based measurements methods, e.g., a closed-loop method, are unreliable under advective conditions. Positive pressure difference inside a chamber can be observed due to temperature variations or pressure gradients induced by gas transport. Our proposed methods are capable of accurately measuring radon exhalation rates with sensing advection and estimating advection velocity.

Reflection of in Narkh (Price) Pashto Rhymed Literature

Jirgas and talks grounded on the idea of (Power and Price) are the means by which the issues that arise among the Pashtuns are resolved. The article's goal is to pinpoint the Pashtuns' shared understanding of Narkh (price). It is a field study with a bibliographic focus, and the researcher employed both descriptive and analytical methods to achieve this goal. In any location or nation where there is a dearth of educated individuals, people would always resort to their civil laws in an attempt to resolve disputes or other issues. Among these rules and precepts, the majority of Pashtuns, particularly the tribes centered in Paktia, have a particular folk law known as Narkh (Price), which they frequently apply to resolve disputes. Narkh literally means "price" or "public law." Price, as it is known locally, refers to the customary choice made by the Merakchis (interviewers) to resolve a conflict between two or more individuals, families, villages, or tribes. Regarding societal concerns, there are many different kinds of prices: the cost of heat, the cost of cold, the cost of preparing halal food, the cost of murder, the cost of Quba, the cost of a woman, the cost of a woman on the run, the cost of theft, and the cost of walking off the road. Similarly, the price, or Jirga, has been referenced in literature, both written and oral, and it has served as the basis for poetic theory in this regard.

Structural Design and Mechanical Properties Optimization of a Balanced Fiber-Reinforced Rubber Hose

This paper focuses on the optimal design of the structure of a balanced fiber-reinforced rubber hose (RH). A multi-spherical RH is proposed. Based on the grid method, the structure optimization design of single-spherical and multi-spherical RHs is performed. According to the constraints, the optimization results of the structural parameters of the RH are solved. Then, combined with the deformation characteristics of the conical RH, the cone-spherical RH is improved based on the spherical RH. The mechanical equilibrium angle and deformation expressions of the cone-spherical RH are deduced. The mechanical model of the balance performance, stiffness, and burst pressure for the cone-spherical RH is constructed. The structural optimization design of double-spherical and double cone-spherical RHs is performed to further reduce the stiffness of the RH based on the multi-spherical RH. Eventually, the correctness of the theoretical model and its optimization results is verified through experiments. The results of this research can provide reference data for future studies in related fields.

Analysis of the Causes of the Decline in Water Production Bid on Fresh Water Generator in Ship MV. Lumoso Karunia II

This study aims to analyze the causes of the decline in fresh water production on the Fresh Water Generator on the MV. Lumoso Karunia II. Researchers conducted this research for 12 months and 5 days conducted on the MV. Lumoso Karunia II which is a type of Bulk Carrier ship which is a ship owned by PT Lumoso Pratama Line Company. This research method uses quantitative methods. Researchers use secondary data in the form of library books, journals and documents related to this research, while primary data in this study is in the form of direct field studies. Data collection techniques in this study are library research, direct and indirect observation and interviews. The results of this study indicate that the performance of the fresh water generator auxiliary aircraft is less than optimal so that what is produced does not match the amount of capacity due to lack of maximum maintenance. With the thickness of scale attached to the evaporator pipe of 1.85 mm, it causes blockage of the evaporator pipe. Thus, there is a decrease in intake in the evaporator. So, the decrease in intake in the evaporator resulted in a decrease in fresh water production of 16 m3 tons in the fresh water generator. As a result of the decrease in fresh water production in the fresh water generator at MV. Lumoso Karunia II is a shortage of fresh water in accommodation and disruption of the cooling process in machinery.

Treating traumas among Christians in Nigeria: A randomized controlled field study of the Healing the Wounds of Trauma program.

Treating traumas among Christians in Nigeria: A randomized controlled field study of the Healing the Wounds of Trauma program.

Phase field study on the grain size dependent electrical resistivity-strain response in superelastic nanocrystalline NiTi alloys

The superelastic NiTi alloy's electrical resistivity exhibits significant variations in response to deformation, making it a highly attractive material for sensing applications. However, there exists a lack of comprehensive knowledge of the effects of grain size (GS) on the electrical properties of NiTi alloy. To address this gap, a novel electro-mechanical coupled phase field simulation model is developed, with crucial parameters determined through experimental investigations. The results demonstrate a notable change in the relationship between electrical resistivity and strain, transitioning from a quasi-linear pattern to a piecewise nonlinear one as the GS increases. The observed modification is found to be primarily influenced by the martensitic transformation, characterized by a transition from a uniform mode to a localized mode. As the GS increases, there is an initial drop in the total change of electrical resistivity at peak strain, followed by a subsequent stabilization. This is because the GS, through the stress and the degree of phase transformation, exerts two opposing effects on the variation of electrical resistivity. Furthermore, the combined influence of hysteresis and hysteresis in the martensite fraction contributes to a consistent decrease in resistivity hysteresis as the GS diminishes. This study improves the understanding of how GS affects NiTi alloy's electrical resistivity-strain response and lays the foundation for future sensing performance regulation, expanding its multi-functionality as an intelligent material.

A comparative study of using geophysical methods for imaging subsurface voids of various sizes and at different depths

Subsurface voids pose significant geohazards, underscoring the need for their timely detection in order to mitigate the associated hazard. We report on a field study aimed at the comparative assessment of electrical resistivity tomography (ERT), seismic refraction tomography (SRT), and the multichannel analysis of surface waves (MASW) for void mapping in karstic regions. The field surveys were conducted at a site in central Texas, of typical karstic geomorphology, and involved the co-located deployment of ERT, SRT and MASW arrays. Post-surveying, boreholes were drilled at select locations for verification purposes. It is shown that MASW demonstrated limited ability to resolve voids due to its inherent theoretical limitations. In contrast, ERT revealed high-resistivity air-filled zones, and low-resistivity soil-filled regions, which aligned well with post-survey borehole logs, although deeper voids remained largely undetected. SRT clearly delineated voids through velocity reductions, but smoothing effects overestimated void velocities. Using ERT and SRT jointly provided improved void characterization compared to single-method-based interpretations, with ERT determining void type and SRT delineating boundaries. Despite the relative success of the joint ERT-SRT application, it is evident that without the corroboration provided by invasive testing, definitive void localization and characterization under arbitrary site conditions remains elusive.

Where Do Young Children in Middle-class High-rise Housing Estates Play?A critical analysis of spatial planning and design parameters across seven heterogeneous housing estates in Pune, India.

Play is fundamental to children’s physical growth, social development, and mental and emotional well-being; and how we plan, and design high-rise housing estates impacts children’s ability to access and use spaces for play, thus impacting their overall growth and development. By using Lefebvre’s Spatial Triad (1974/1991) as an analytical framework, this paper investigates (1) ‘Conceptualized Space’ or ‘play areas and materiality of the play areas as conceptualized by design professionals’; (2) ‘Actual Space’ or ‘spaces where children actually play’; and (3) ‘Experienced Space’ or ‘caregivers’ assessment of play spaces and their preferences of play materials, elements and surfaces for young children in high-rise housing estates. Comparative case-study research of seven housing estates from a baseline study of 63 high-rise housing estates was adopted to realize contrasts, patterns, or similarities across the cases. Methods included (1) semi-structured open-ended interviews with design professionals including developers (n=4), architects (n=4), landscape architects (n=2) and play equipment manufacturer (n=1); (2) In-depth field studies; and (3) semi-structured open-ended interviews with parents (n=27), grandparents (n=5) and nannies (n=4) of young children. This study generates new knowledge about design and planning considerations for designated play spaces, caregivers’ and designers ideas around nature based play, caregivers’ preferences of play elements, materials and surfaces, and details spatial factors influencing young children’s play areas in housing estates. As a way forward, the paper offers 11 guidelines to influence the design and planning of play spaces and open areas in future housing estates to fulfil young children’s play needs.

Effects of glyphosate on glyphosate‐resistant maize growth and metabolic parameters in the greenhouse and field

AbstractThe potential adverse effects of glyphosate on glyphosate‐resistant (GR) crops are still a matter of controversy. The effects of glyphosate at recommended application rates (either a single application of 580 g ae ha−1 of glyphosate at stage V5 or a sequential application of 580 + 980 g ae ha−1 at stage V3 and V7, respectively) on growth, mineral content, and metabolic parameters of GR maize (Zea mays) were determined in greenhouse and field studies, each replicated in different years. No effects on any growth parameter (including grain yield), mineral content (leaf and grain), grain starch, crude protein, or total lipids were found. The only significant negative effect was a slight reduction in tyrosine content of leaf tissue with the sequential treatment, however, there was no increase in shikimic or quinic acids in leaf tissue with any treatment. In a separate greenhouse experiment, there was no sign of oxidative stress, as determined by levels of chlorophylls, carotenoids, and malondialdehyde (MDA) content as well as superoxide dismutase and guaiacol peroxidase activities 4 and 8 days after treatment with 1080 g ha−1 glyphosate. In fact, there was a reduction of MDA in roots of glyphosate‐treated plants 4 DAT, indicating reduced oxidative stress. No aminomethylphosphonic acid, the primary degradation product of glyphosate, was found in either leaves or grain of treated plants, and no glyphosate was found in grain of treated plants from the field studies. All the results are consistent with there being no adverse effects of glyphosate on GR maize at recommended application rates.

Response of Soybean Plants to the Foliar Application of Carbon Quantum Dots Under Drought Stress: A Field Study

Response of Soybean Plants to the Foliar Application of Carbon Quantum Dots Under Drought Stress: A Field Study

Влияние биоорганического удобрения на урожай гороха посевного

Biological activity of bioorganic fertilizer of different concentrations on pea seedlings of Batrak variety was investigated. Bioorganic fertilizer in concentration of 10-5% is shown to be the most effective. Soaking seeds in solutions of bioorganic fertilizer showed the activation of antioxidant enzymes superoxide dismutase, peroxidase and a decrease in catalase activity, this shows that plants increase immunity during treatment and become more resistant to various environmental factors. Bioorganic fertilizer at a concentration of 10-5% helps to reduce infection of pea seeds with pathogenic microflora and increases yield by 10-15%. Keywords: PEAS, PEROXIDASE, CATALASE, SUPEROXIDE DISMUTASE, FIELD STUDIES, BIOORGANIC FERTILIZER, BIOLOGICAL ACTIVITY

Source Rock Characteristics of Loa Janan Area, Kutai Kartanegara, East Kalimantan, Indonesia

The source rock analysis was involved examining the geochemical content of hydrocarbons in fine-grained sedimentary rocks. This study was conducted on claystone in the Loa Duri area to determine the source rock characterization, which includes the level of richness, the organic matter type, and the level of maturity. The methods used are field data collection and laboratory analysis. A field study is used to collect rock sampling, while laboratory analysis consists of the analysis of Total Organic Carbon content, Rock-Eval pyrolysis, and vitrinite reflectance (Ro). The results of the analysis of Total Organic Carbon on six claystone samples showed values ranging from 0.50-8.97%. Generally, they had the potential to form hydrocarbons in the moderate to special category. Rock-Eval pyrolysis shows Hydrogen Index values from 52–149 mg HC/g Total Organic Carbon has the potential to generate gas, with Tmax values ranging from 414–432, indicating an immature to early mature level of thermal maturity. Ro analysis on three claystone samples with values ranging from 0.40–0.48 %. The hydrocarbon potential of the research area indicates the category of organic material richness is quite excellent, with kerogen including type III. The quality of the source rock based on the value of the Hydrogen Index is included in the category of gas-prone. The low maturity value (both Tmax and Ro) is thought to be caused by the suppression phenomenon in coal-dominated areas, so the values displayed by the two parameters do not correspond to actual values.

Optimizing gas lift for enhanced recovery in the Asmari formation: a case study of Abu Ghirab field in Southeastern Iraq.

The gas lift technique applies gas bubble injection into the vertical wells to raise production. Gas and liquid rates, shifts in flow regimes, and system equilibrium influence this process. This study explores the efficient implementation of gas lift techniques to maximize production from the Asmari Formation in the Abu Ghirab Field, southeastern Iraq, using a continuous gas lift for maximum production rate by PIPESIM TM software. The results of the gas lift design for the four wells (AGCS-33, 26, 28, and 36) show that the Vogel method provided the best results for the gas lift design, and faults and facies distribution impact the gas lift injection and oil production rates. These will become evident with wells AGCS-33 and 36 as their proximity to faults will increase oil production rates with a gas injection rate limit of 7 MMSCF/d. Conversely, for wells 26 and 28, the limit will marginally rise, starting at 5 MMSCF/d. In addition, the effect of gas lift is clearly in the middle western of the crest, which shows an increasing percentage of oil production of 136.6% at minimum rate and 198.5% at maximum for the well AGCS-26, 89.7% and 105.7% for the well AGCS-36. Wellhead pressure has a significant impact on gas-lift performance, and improving gas-lift efficiency can be accomplished using an electric control valve. The feasibility of implementing gas lift in the Asmari Formation depends on the water cut, well location, and water saturation distribution within the Formation.

How do Ivorian Cyberfraudsters Manage Their Criminal Proceeds?

AbstractThis article delves into the intricacies of managing illicit financial gains among Ivorian cyberfraudsters, shedding light on the findings of a field study conducted in Côte d’Ivoire by Swiss and Ivorian research teams. The study involved interviews with cybercriminals, law enforcement officials, and subject matter experts, in order to answer a specific question: What strategies do Ivorian cyberfraudsters use to manage and launder the criminal proceeds originating from romance scams and sextortion? The results explore the tactics employed by cyberfraudsters to obfuscate the illicit financial flows, their organizational structures, and the strategies they employ in managing and using their gains. It confirms certain elements from the scientific literature, in addition to introducing new insights for a better understanding of the processes of money laundering and the use of illicit funds. The article also unravels the multifaceted challenges encountered within the anti-money laundering framework in the context of cybercrime and raises avenues for further reflection and future work to enhance the fight against this scourge.

Straw return under deep tillage increases grain yield in the rice-rotated wheat cropping system

ContextStraw return under rotary tillage has been used for two decades in the rice-rotated wheat cropping system in the lower Yangtze region of China, but it has become prone to reduce wheat emergence and yield in recent years, and alternative tillage methods are required to ensure the high wheat yields. AimsTo determine whether straw return under deep tillage can improve wheat yield and under what mechanisms. We hypothesize that straw return under deep tillage can increase wheat seedling number by reducing rice stubble and straw coverage, and expand the nutrient pool and root system of the plow soil profile to keep post-anthesis viability for increasing wheat yield. MethodsA field study was conducted during two consecutive years and included four treatments: rotary tillage after straw removal (RT); rotary tillage after straw return (RTS); shallow rotary tillage followed by straw mulch (STS) and deep tillage after straw return (DTS). Wheat seedling number, yield, aboveground nutrient uptake, growth period, root characteristics, and soil nutrients were measured. ResultsCompared to RT, seedling number under RTS and STS decreased by 8.3 % and 13.4 %, respectively, while DTS increased by 14.7 %. Wheat yield under RTS and STS decreased by 3.0 % and 7.3 %, respectively, while DTS increased by 8.2 %. The reduction in seedling number under RTS and STS would be partially offset in wheat yield by an increase in effective tiller number per plant and grain weight. Consequently, the variation in wheat yield among treatments was less than the variation in seedling number. Aboveground N and P accumulation in wheat under DTS were higher than the other treatments. Among four treatments, DTS had the highest root distribution and soil N and P contents in the middle and deep soil layers, thus prolonged grain filling duration. Wheat nutrient uptake at maturity and yield were significantly correlated with root weight density and root length density in both middle and deep soil layers. ConclusionsStraw return under deep tillage can increase nutrient supply capacity and root distribution in deep soil while ensuring wheat emergence, enabling better filling of post-anthesis wheat and yield. It is therefore an effective alternative tillage method suitable for the rice-rotated wheat cropping system.

Assessment of adaptive properties of winter triticale cultivars by yield in the Middle Urals

Triticale is a versatile crop with high yield potential but insufficient resistance to unfavourable growing conditions. Therefore, the combination of high yield, adaptability, plasticity, stability and stress resistance of varieties is of great importance. The purpose of the research is to assess the adaptive potential of winter triticale cultivars according to the "yield" trait in agroecological conditions of the Middle Urals. Field studies were conducted in the Udmurt Republic in the years with contrasting weather conditions (2021–2023), the index of environmental conditions varied from -128 to 152. Forty-five cultivars of various ecological and geographical origin were studied. The analysis of the adaptive potential of the cultivars was carried out using various statistical methods. As a result, the most adaptive cultivars for the agroecological conditions of the Middle Urals were identified. The cultivars ‘Beta’, ‘Tribune’, ‘Topaz’, ‘Linda’ (Russia), ‘Mayak’, ‘Ales’ (Belarus), ‘Torchinsky’ (Ukraine) were char- acterized by high responsiveness to improving environmental conditions (bi = 1.82 2.01). The cultivars ‘Giray’, ‘Bereket’, ‘Ataman Platov’ (Russia), ‘Amulet’ (Belarus) showed relatively high stress resistance. The cultivars ‘Beta’, ‘Zimogor’, AD 1405, ‘Topaz’, ‘Kornet’ (Russia) were distinguished by a high compensatory ability. The cultivars ‘Bereket’ and ‘Ataman Platov’ had the lowest yield variability and at the same time high homeostaticity. When ranking the tested cultivars according to the listed indicators, the top ten most stable and plastic cultivars were ‘Zimogor’, ‘Kornet’, ‘Ataman Platov’, ‘Bereket’, ‘Nemchinovsky 56’, ‘Izhevskaya 2’, ‘Imprint’, ‘Bard’ (Russia), ‘Impulse’ (Belarus), ‘Chernobrivets’ (Ukraine), with a total ranking score from 55 to 95 points. The listed cultivars can be classified as the most valuable. In the agroecological conditions of the Middle Urals, it is advisable to cultivate varieties that combine high yields and adaptability – ‘Zimogor’, ‘Kornet’, ‘Izhevskaya 2’, and according to intensive technology – ‘Beta’ cultivar. The cultivars ‘Ataman Platov’, ‘Chernobrivets’, ‘Bereket’, ‘Bard’, ‘Impulse’, ‘Nemchinovsky 56’ also have practical value as a source material in the breeding of winter triticale to increase productivity and adaptability. A comparison of different methods for determining the adaptability of cultivars to specific environmental conditions showed the practical equivalence of the indicators of yield range, yield variation coefficient and homeostaticity.

Plastic debris beaching on two remote Indian Ocean islands originates from handful of Indonesian rivers

Abstract Large amounts of plastic waste from non-local sources (>200 tonnes) wash up on Christmas Island and the Cocos Keeling Islands, two remote Indian Ocean islands, every year. Local communities on these islands organize beach clean-ups regularly to tackle this problem and, because their waste systems cannot handle the enormous amounts of plastic, predominantly incinerate the collected waste. However, as long as plastic waste keeps entering the ocean, beach clean-ups alone cannot be sustained. The first crucial step to solving this problem is to determine the main sources of plastic waste to the islands. In this study, we simulate the transport of floating plastic waste to determine the main riverine sources of plastic reaching the islands. We find that the majority of simulated plastic waste comes from just 4 Indonesian rivers: the Solo, Brantas, Ci Tanduy, and Wai Sekampung. We suggest that further numerical and field studies, as well as potential river clean-up efforts focus on these rivers to stop plastic waste inundating Christmas Island and the Cocos Keeling Islands.

Relasi Penafsiran Amin Al-Khuli tentang Puasa dalam Al-Quran dengan Kondisi Sosiologi dan Psikologi

The literary exegesis of the Qur'an developed by Amin Al-Khuli offers a new approach to interpreting the sacred text as a response to critiques of classical exegesis and modern cultural and intellectual developments. This study aims to explore the evolution of Qur'anic interpretation in the contemporary era, with a focus on Amin Al-Khuli’s literary exegesis of the verses on fasting and its relevance to the sociological and psychological conditions of Muslims who fast. The research uses a qualitative approach with library research methods, where data is gathered through literature review and analyzed using techniques of inventory, classification, and interpretation. The findings reveal that Al-Khuli’s literary exegesis provides a deeper and more contextual understanding of the fasting verses, linking the aspects of language and Qur'anic meaning with contemporary social and psychological conditions. The conclusion of this research is that the literary exegesis approach not only enriches the understanding of the text but also offers practical solutions to the challenges faced by Muslims in fasting practices. Recommendations for future research include conducting field studies to collect more empirical data and exploring the integration of literary exegesis with other interpretive approaches for broader application in Muslims' daily lives.