bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of packaging design for pheromone product to control Oryctes rhinoceros in oil palm plantation
Authors: Pradana M G , Siallagan I A , Guntoro G , Susanto A 
Published: January 2023

Abstract

Oryctes rhinoceros is an oppressive pest in the plantation of oil palm. It is causing serious damage, especially to young oil palm, and in several cases, affects the mature stages of trees. Mass trapping using an aggregation pheromone with the active component ethyl 4-methyl octonoate is commonly used to trap and monitor the beetles in young oil palm replanting. Many packaging designs with several plastic materials have been developed to increase the efficacy and durability of mass trapping activities. During three months of observation, there was no significant difference in cumulative captures of each packaging design. The permeable plastic polypropylene was captured with a mean of 29.50 individuals/week, while polypropylene, polyethylene terephthalate, and polyethylene charged 23.08, 20.75, and 18.58 individuals/week, respectively.
Seed storability of malapari (Pongamia pinnata Merril)
Authors: Suita E , Nurhasybi  , Syamsuwida D , Aminah A , Putri K P 
Published: January 2023

Abstract
Seed storage is carried out to secure the seed stock obtained from the harvest until they are planted. The appropriate techniques were used to maintain the seed viability during storage. The objective of the research is to evaluate the viability of malapari (Pongamia pinnata) seeds after being treated. The seeds are stored in a room in sealed plastic with no media, sealed plastic + coconut coir powder media, sealed plastic + husk charcoal. The other containers were calico fabric with no media, calico fabric + coconut coir powder media, and calico fabric + husk charcoal. The finding showed that the best storage was storing the seed in a plastic container plus husk charcoal media, and within five weeks, it can maintain the seed moisture content of 62.92%, germination percentage of 93.33%, and germination speed of 7.55% KN/et mal. The seed can also be stored in a plastic container without media at a moisture content of 60.69%, and a germination percentage of 91.00%.
Field performance of one-year-old medicinal plant: Screw tree (Helicteres isora Linn.) from stem cuttings in the tropical savanna region
Authors: Umroni A , Rianawati H , Pamungkas D , Pujiono E , Sumardi  
Published: January 2023

AbstractThe purpose of this study is to assess the field performance of the medicinal plant Screw tree (Helicteres isoraLinn.) Family Malvaceae in two home garden environments. The screw tree has been commercialized for the production ofJamu, an Indonesian traditional medicine. On Timor Island, however, this species has not yet been cultivated and is considered a weed. Using the t-student test, we compared and described the growth performance of a vegetatively propagated screw tree in two environments. According to field plantation, screw tree grows well in both home gardens, with a survival rate of 97% and 99% for home garden 1 and 2, respectively. For home garden1 and 2, the Increment growth diameter was 0.1 mm month−1and 0.2 mm month−1, respectively, and increment height was 1.22 cm month−1and 0.95 cm month−1. For home garden 1 and 2, the average diameter was 0.4 cm; 0.5 cm (P>0.05, ns) and height was 58 cm; 48 cm (P<0.05). There is no significant difference in diameter, but there is a significant difference in height between home garden 1 and 2. In home garden 1, 26% of the plants have begun to flower, compared to 13% in home garden 2. Farmers may benefit from vegetative propagation due to faster flowering and fruiting. Furthermore, the screw tree is most likely appropriate for agroforestry tree/shrub components.
Erosion prevention through empowerment of human resources to support food security around the Kambaniru watershed, East Nusa Tenggara
Authors: Sukamdani N B , Sukwika T 
Published: January 2023

Abstract
The high activity of the community that is not accompanied by the readiness of human resources around the watershed determines the status of the land use index, the erosion index, and economic and social factors. The negative externality impacts arise due to unfriendly land-use management on various types of cultivation, including agriculture, cultivation, plantations, or even livestock, contributing to the potential for erosion. This study aims to create a causal model of erosion prevention through a human resource development approach to support community food security and develop a technical program for land rehabilitation around the Kambaniru watershed, East Nusa Tenggara. The research method is presented descriptively with observation, tabulation, and data valuation techniques. The performance assessment results of the Kambaniru watershed show a medium-category classification. Multi-purpose plants and trees are prioritized for land rehabilitation to prevent erosion and provide food security for the poor, such as corn and tubers. Human resource capacity development in the upstream and central communities has successfully supported the erosion prevention and land rehabilitation program. The policy implications of this research are as follows: the limited capacity of community human resources in land conservation can be started by socializing the planting of short-lived trees. The recommended species are legume family types that can thrive in various types of soil and are flexible with climate change. Corn and tubers are a source of high calories and nutrients needed to improve the quality of human resources in the Kambaniru watershed area. Therefore, developing a food reserve land program in the Kambaniru watershed is necessary.
Developing a precision spatial information system of smallholder oil palm plantations for sustainable rural development
Authors: Rustiadi E. , Pribadi D.O. , Pravitasari A.E. , Nurdin M. , Iman L.S. , Supijatno  , Panuju D.R. , Saad A. , Rosandi V.B. , Anthony D. 
Published: January 2023

Abstract
Oil-palm products are contributes significantly to economic growth, creating jobs and government revenue. Of the 14 million ha of Indonesian oil palm plantation, 40% are smallholder farming characterized by low productivity, irregular distribution, and fragmented. The lack of smallholder farming traceability information is one of the main issues for product certification, which make it difficult to access the international markets and is an obstacle to increasing productivity and developing rural-based processing. The OPTIMAL-IPB technology using Artificial Intelligence (AI) approach provides precise spatial information. The objectives of this research, which were carried out in Jambi Province are to detect precisely: (1) the positions, numbers, and areas of smallholder oil palm plantation in the village with precision; (2) the suitability of the spatial distribution of oil palm plantations compared to the spatial plan (RTRW); (3) potential income of farmers and land tax at village level based on production estimates. The study significantly increased the accuracy and detailed information of palm oil farming data, providing essential information for land use control and the traceability of oil palm products. Village and regency governments can utilize this spatial information system for income tax calculations, preparing various production, and income improvement programs.
Points of consideration on identification of the atmospheric fronts depicted on weather charts
Authors: Miyamoto Maki , Yamada Tomohito J. 
Published: January 2023

Abstract
Atmospheric fronts play an important role on the day-to-day variation of rainfall in Japan, North-western Pacific. They are defined as a discrepancy of air density and have been depicted on surface weather charts for more than 100 years by Japan Meteorological Agency (JMA). This study develops an approach to detect fronts from the charts published from 1978 to 2020 and investigates how detected fronts could be utilized. The fronts which are depicted on the charts might have a diverse physical characteristic in each age. One of factors is a difference in how to represent fronts. The difference also prevents from detecting fronts under a certain accuracy. Previous study demonstrates detecting fronts based on the color available from the charts. However, this approach is applicable for weather charts published after 2000 by JMA. This paper describes consideration points for a unified detection of fronts from the charts for 43 years in detail. Furthermore, we compare fronts detected by several methods and discuss a spatial scale in which their differences could be neglected.
Assessment of alluvial aquifer conditions during a construction phase for a deep excavation
Authors: Ghulami Masoud , Gourbesville Philippe 
Published: January 2023

Abstract
The Var low valley and its unconfined alluvial aquifer is the main water resource for around 600,000 inhabitants who live in the French cities and towns near the river mouth, such as Nice and St Laurent du Var. Several commercial and residential complexes are planned to be built in the downstream floodplain areas of the Var River and close to the Nice airport. Some of these buildings may have an impact on the groundwater table and consequently on the supply of drinking water. In this study, the groundwater flow was simulated using MIKE FEFLOW numerical model to assess the impacts of new development projects by estimating the drawdown of groundwater table due to the planned pumping activities as well as tracing the trajectories of groundwater movements to make sure the salt intrusion will not happen. The study focuses on a planned building, near well line used for water supply. The building was initially designed with several underground floors as parking lots. The model is developed and validated using the available piezometric data of 2010-2012 for the study area. The model was able to simulate the hydraulic head with a good precision (the Nash Sutcliffe Efficiency coefficient of 0.7 and higher). As the local groundwater level is very high and only a few meters below the ground surface, during the construction period of the foundation, the site must be kept dry, and the water should be pumped out. It will normally last around six months. However, this construction period is the most critical stage and will have serious impacts on the groundwater table, but our simulation results suggest that even after the construction period, the groundwater table will be dropped and consequently the salt intrusion into the groundwater due to the short distance of the site to the sea will be continued. Therefore, different foundation levels were tested to find the best solution.
Application of Delft3D computational model to estimate the influence of El Bala run-of-the-river dam on the morphological activity of Beni River, Bolivia
Authors: Rivera Adriana R , Heredia Marcelo W 
Published: January 2023

Abstract
Beni river is an important tributary in the Amazon basin. There, the Bolivian government decided the construction of a two-dam cascade hydropower system, including Chepete dam and El Bala run-of-the-river dam. The main concern is the high sediment transport in Beni river. Then, the aim of the research is the application of Delft3D model to estimate the influence of El Bala run-of-the-river dam on the sediment transport and morphological activity of Beni river. The model was calibrated for natural conditions based on ADCP data and sediment transport measurements collected from the river. The implemented model was able to reproduce hydrodynamics and sediment transport in natural conditions. Hence, several scenarios were tested. A hydrodynamic and morphological model was set to test the influence of the dam on the river for hydrodynamics, sedimentation and erosion processes in Beni river. Results show that Delft3D performed very well in modelling sedimentation and erosion processes in Beni river, the model was able to predict the expected erosion process due to the presence of Chepete dam, upstream of El Bala, which retains the sediment load of Beni river affecting the morpho-dynamics of the river. Additionally, the model was able to predict a sedimentation in the reservoir.
Influence of dam break scenarios on flood wave characteristics. Case study – Paltinu Dam, Romania
Authors: Nistoran Daniela-Elena Gogoaşe , Ionescu Cristina Sorana , Simionescu Ştefan-Mugur 
Published: January 2023

Abstract
Among the various constructive types of dams, the arch dams breaches are the largest and the quickest to occur, leading to the most catastrophic flood waves. Therefore, prediction of the shape, magnitude and arrival time of the breach waves is of utmost importance for flood risk management. The study analyses in GIS environment the influence of different dam breach scenarios on the evolution in time and space of the flood wave. As a study case it was chosen the 108m in height, Paltinu arch-dam (Romania), built on Doftana River and its about 19km river reach down to the confluence with Prahova River. Several breach widths and depths are considered in the analysed scenarios, coupled with selected inflow hydrographs and initial reservoir water elevation, to assess their influence on the dam break wave characteristics and downstream flooded areas. To model the flood wave routing following the dam brake, HEC-RAS software is used. Inundation boundaries, characteristic depths and velocities, as well as arrival time in selected control sections are compared and conclusions are drawn.
Methodology for determining hydromorphological indicators for rivers with hydropower uses
Authors: Stanca Stefan Ciprian , Dimache Alexandru Nicolae , Ilinca Cornel , Anghel Cristian Gabriel 
Published: January 2023

Abstract
The ecological condition of rivers is influenced by hydropower uses. The European Union encouraged the hydropower sector with installed capacities less than 10 MW, considering that their impact is small. Small hydropower plants influence the main hydromorphological indicators, namely the hydrological regime, the longitudinal connectivity of the river and the morphological conditions. This article proposes a methodology in which hydromorphological indicators take into account the dynamics of the phenomena and processes involved, due to the variation over time of the causes and effects. The methodology proposes a score based on linear interpolation, completing the threshold values, thus being able to differentiate the negative impact on rivers. The article proposes also a series of measures to reduce the negative impact of small hydropower plants.
Elements of hydraulic calculation of permanent movement at non-standard sewer collectors
Authors: Luca Mihail , Marcoie Nicolae , Luca Alexandru-Lucian , Toma Daniel 
Published: January 2023

Abstract
An important issue in the design of the main visitable sewer collectors is the hydraulic calculation in permanent movement and non-permanent movement. Some main collectors that can be visited have non-standard flow sections, a situation that complicates the hydraulic calculation. Non-standard flow sections derive from standard sections (circular, ovoid, bell, rectangular and mixed) through natural and anthropogenic degradation processes. The initially designed section changes over time in terms of shape, dimensions and roughness, a situation in which determining the hydraulic parameters becomes very difficult. The research carried out on a series of visitable main collectors revealed that the flow section has geometrically transformed from curved shapes to mixed shapes (curves + right-hand segments).The hydraulic rehabilitation of degraded collectors requires the analysis of flow parameters in the case of geometrically modified sections. The non-standardized flow section can be considered as a “single bed”, or as a “multiple bed”. At the same time, the “single bed” type sections composed of both circular arcs and straight line segments can be hydraulically analyzed with a customized calculation program. The paper presents a model for calculating the geometric and hydraulic parameters of a sewer collector with a non-standard shape and in permanent uniform motion.
A model for computing thermally-driven shallow flows
Authors: Echeverribar Isabel , Martínez-Aranda Sergio , Fernández-Pato Javier , García Reinaldo , Brufau Pilar , García-Navarro Pilar 
Published: January 2023

Abstract
In many natural disasters such as overland oil spills or lava flows, physical fluid properties as density change when considering non-homogeneous spatial and time variable distributions of the temperature. This effect is even more remarkable when these flows show a non-Newtonian behaviour due to the sensitivity of their rheological properties as viscosity or yield stress to temperature. In these cases, temperature becomes a significant variable that drives the fluid behaviour, which must be solved using an energy equation coupled with the free surface flow system. Special attention is devoted to thermal source terms which must include all the heat fluid exchanges, and their modelling sometimes can govern the complete flow behaviour. Fluid density, viscosity and yield stress, also affected by temperature, must be recomputed every time step. Summarizing, this work presents a 2D free surface flow model considering density and temperature variations, which could even modify viscosity and yield stress, with heat transfer mechanisms. The model is applied to oil spill overland simulations and heating/cooling test cases are carried out to ensure the system energy balance. As conclusions, it can be said that the numerical results demonstrate the importance of the heat exchange effects and those of the density, viscosity and yield stress variations.
Determining the spatio-temporal relationship between water quality monitors in drinking water distribution systems
Authors: Gleeson Killian , Husband Stewart , Gaffney John , Boxall Joby 
Published: January 2023

Abstract
A novel method to both assess the strength of connectivity and determine hydraulic transit times between water quality monitors from time series data is reported. It was developed using a network of over 50 mobile multi-parameter sensors deployed for 18 months across a UK drinking water distribution system, and then validated using a network of 18 sensors from a different UK utility. Correlation coefficients are calculated at different time shifts for each possible sensor pair, with strength of connectivity represented by the highest correlation coefficient, and with the temporal lag of this highest correlation also designates the transit time. The results demonstrate the potential to derive valuable spatio-temporal information, with potential to increase understanding of system performance and connectivity. This information can be used to assist with further analytics such as tracking water quality events and improving hydraulic and disinfection residual decay modelling.
Rehabilitation of the water supply network of Timişoara City from Timiş County in Romania
Authors: Stanciu Alina , Pavel Vasile Lucian , Toma Daniel , Toma Cristina Mihaela Vîrlan 
Published: January 2023

Abstract
In such an urban centre like Timisoara (the largest one from the West of Romania), the problem of water treatment for drinking, respectively wastewater collection and treatment, have always been issues of strategic importance to the community. The policies of the European Union to support the financing of the member states in the field of environmental engineering and protection represented the basic pillar in the development of the water supply network also in this case. In light of the increasing and pressing need to efficiently manage scarce water resources, there has been renewed interest by water distribution network owners to develop and implement water management strategies and tools that would assist in the integrated and automated management of those networks. The modernizations made at the treatment plants can be summarized in a few basic ideas: the automatic control of processes, lower costs, and higher safety. The most commonly used rehabilitation techniques for reducing both types of water losses are pressure management and pipeline rehabilitation. In Timişoara City, this modernization, and the rehabilitation of the water supply network led to a significant reduction of the environmental pollution (water, soil, air), and to a better protection of human health. Investments in modern technologies for water treatment, which allow an automatic monitoring of the process, translate into more safety in exploitation, and, implicitly, a better-quality control. The main objectives pursued in this study aim at: improving the quality of drinking water supplied to the population, ensuring continuous supply of drinking water, compliance with the regulations in force, both Romanian and European, and ensuring the access for the majority of the population at this system. There were followed the rehabilitation systems for street drinking water supply networks, also those for street sewerage networks, with modern constructive solutions.
PVA and PMMA nano-composites: a review on strategies, applications and future prospects
Authors: Palanichamy Kalyani , Anandan Muthupandeeswari , Sridhar Jayavel , Natarajan Varagunapandiyan , Dhandapani Aravind 
Published: January 2023

AbstractNanotechnology has facilitated unique ways of developing novel nano-composites. In that sense, polymer-based nano-composites are being extensively researched for their outstanding properties as a result of incorporating nano-fillers in the polymer matrix. They have activated enormous research interests owing to their potential in addressing environmental issues, packaging, optics, electronics, battery electrolytes, pneumatic actuation, molecular separations, sensors, biomedical applications, etc Hence, the authors intend to consolidate reported information about these polymer matrices, diverse inorganic nanofillers, and nano-filled polymer composites for improvement in properties and future advanced applications. The review exhaustively covers 15 years of literature on theoretical, experimental, and application aspects of PVA & PMMA-based nano-composites, mainly focusing on inorganic oxide-based fillers. It also summarizes the structure-property correlations that govern their performance. Hence this review is hoped to provide the readers with stimulating insights on strategies, noteworthy challenges, and future opportunities/prospects in developing polymer nano-composites that may cater to the need of our society and scientific industries as well.