bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identification of paddy field conversion rate in relation to food security in Aceh Besar District, Aceh Province, Indonesia
Authors: Yasar M , Kamarudin M K , Diana Mohd Idris N , Kiswayadi T D , Salima R , Foo J 
Published: December 2022

Abstract
Productive paddy fields are an important asset in supporting food security. However, due to the increasing competition for land use with sectors outside agriculture, it has triggered the pace of land conversion without control and has the potential to threaten the stability of food supply itself. This study aims to identify the rate of paddy field conversion that occurs in Aceh Besar Regency, Aceh Province, Indonesia. This research was conducted through a spatial approach using the application of Geographic Information Systems (GIS) to identify forms of spatial change based on land use. The method used is a Supervised Classification. The results of the study showed that the highest rate of paddy field conversion occurred in the period 2010-2020 reaching 0.947%/year. This is not comparable to the ability of the substitution efforts made in the previous ten years (2000-2010) which was 0.88 %/year. The form of land conversion that occurred was dominated by the non-agricultural sector, especially residential needs reaching 61.89%. This has the opportunity to reduce rice production by 1,051.38 / year. Therefore, efforts to control the rate of land conversion are absolutely necessary to ensure sustainable food security.
Detection of groundwater sources in Lembor village using geoelectrical resistivity method schlumberger configuration
Authors: Hasan M F R , Pradiptiya A , Setiawan Y , Agung P A M , Susilo A , Sunaryo  
Published: December 2022

Abstract
Drought is one of the problems faced by the people of Lembor Village, Lamongan Regency, this problem will be slightly resolved if the area has reserves of groundwater sources. Therefore, this study aims to determine the existence of potential groundwater sources around Lembor Village. The method used is the geoelectrical resistivity method schlumberger configuration. Data acquisition was carried out for 10 measuring points of Vertical Electrical Sounding (VES) with a track length of 310 meters, and a distance between electrodes of 10 meters. The measurement results are then correlated between VES points to produce a 2-dimensional cross-section. The results showed that the measured resistivity value was between 0.03 Ωm to 81.1 Ωm. The structure of the subsurface layer of the study area is dominated by clay and limestone. The indications for the presence of groundwater are found at a depth between 25 to 35 meters at a track distance of 35 to 45 meters, a track distance of 170 to 180 meters, and a track distance of 270 to 280 meters with resistivity values between 0.03 Ωm to 0.32 Ωm. The indications of the presence of groundwater sources need to be investigated in a wider area, to determine the distribution and direction of groundwater flow.
Preparation and characterization of nanofiltration (NF) polyethersulfone and its preliminary studies on beta-carotene concentration from crude palm oil
Authors: Razi F , Azwar A , Sofyana S , Erfiza N M , Luxyana M 
Published: December 2022

Abstract
The enrichment of beta-carotene concentration from crude palm oil (CPO) using nanofiltration polyethersulfone (NF-PES) membrane was studied. This work begins with preparing the NF-PES membrane via the phase inversion method as the first stage. PES polymer was used as base membrane material and N-Methyl-2-Pyrrolidone (NMP) as a solvent. Then, the process concentration of beta-carotene was conducted by filtration of the red palm methyl ester as feed solution using dead-end mode filtration. The objective of this work was to evaluate the effect of separation pressure (3; 4; and 5 bar) on beta-carotene concentration from the feed solution. SEM results showed that the NF PES membrane had an asymmetric structure. It consisted of two layers: the thin top layer had a dense structure, while the support layer had a sponge-like structure. Besides, the pure water permeability of NF PES membrane was about 2-18 L/m2.h.bar was fitted within the range of NF membranes. The optimum operating pressure that gives the highest beta-carotene concentration was achieved at 3 bar. As a result, the beta-carotene concentration has improved about 1.14 times compared to the initial beta-carotene concentration in the feed solution.
Loaf volume and porosity for sourdough bread based modified cassava flour by linier regression and sensory evaluation approach
Authors: Zaidiyah Z , Nur B M , Lubis Y M. , Nasution I S , Nadia F , Khaira U 
Published: December 2022

Abstract
Sourdough bread is a type of bread that has a slightly sour taste and uses natural yeast as a starter. Mocaf is a gluten-free flour made from cassava. Gluten-free flour-based sourdough bread has different physical properties such as volume expansion and porosity compared to wheat-based sourdough bread. Sourdough bread has a unique taste compared to bread in general, a sensory approach is required to get the right formula according to the panelist. This study aims to investigate the ratio of mocaf to flour on the development of volume and porosity of bread using simple linear regression. In addition, a sensory test was also carried out to assess the panelists’ preference for sourdough bread with the selected formula. The results showed that the upper limit of mocaf use in sourdough bread production was 20% based on linear regression of bread loaf and porosity. Panelis preference in hedonic evaluation for sourdough bread based mocaf remained low. Bread selected in this study had less moisture and fat content than control sourdough bread, while the ash and total carbohydrate content in sourdough bread based mocaf were higher than control. Wheat and mocaf flour ratio 80:20 produced sourdough bread with characteristics close to control bread with a moisture 27.82%, ash 2.03%, crude protein 5.26%, fat 0.52%, carbohydrates 64.37 %, crude fiber 2.04%, and energy 156.52 Kcal
Modular Rainwater Storage Design Planning in Support of the Urban Infrastructure Systems Program
Authors: Kurniawan A , Abieza T , Sembada P T S , Jayatri F N M 
Published: December 2022

Abstract
Technology to optimize the potential of rainwater that utilizes rainwater harvesting technology (PAH) cannot simply be accepted by the community, especially in urban areas. Urban areas have limited land to support rainwater storage which has large dimensions with the shape of a tube. Therefore, a modular form was developed that can help urban communities who do not have large lands to optimize the potential for rainwater that falls and is used as clean water to supply daily needs. These components are collected and classified according to urban infrastructure systems (UIS). The planned reservoir with dimensions that are more effective and easy to apply in various places is planned to have a maximum dimension of 1 meter high and 0.5 meters wide made of modular plastic. After going through the stages of analysis of the discharge that can be accommodated in the engineering of a modular rainwater reservoir, then proceed with the design process and provide clarity of designation examples. By utilizing the form with a capacity of 32 liters, this rainwater reservoir can be arranged and adjusted according to the designation of the people who want to use it.
The polyamine compound to response for biotic and abiotic stresses in Zea mays plant
Authors: Hayati R , Rosa E , Rahmiati R , Savitri S , Fitri S , Khumaira K 
Published: December 2022

Abstract

Zea mays L. is the main multipurpose plant for feed energy, food and highly a susceptible for the environmental stresses to agricultural biotechnology. The plant triggers for the main factor in limited Z. mays yield. Recently, it was obtain a crop yields to be significan reduced, and stray due to environmental factor also biotic stresses. Moreover, it was confirm the security of live cells under non-adverse shapes, the polyamine compound was regulate most important roles to responses under abiotic and biotic stresses. The climate change for increasing to demand in maize production plants have been urged to increase for the stress in the tolerance investigation to that crop, although it was certainly realize and assignment of the polyamine compounds for responses for variety environmental stresses. In this study, we were describe a review and summarize the recent literature on the role for the polyamine compound with conferring stress tolerance to Z. mays plants. To the accumulation of polyamine compounds, that mechanism and behavior, recently to genetic the manipulation studied it was perform to pathway to the polyamine metabolism, it was improved the abiotic and biotic stress distance have been research. Then, the polyamine compound metabolism under stress term was not operate personally in that cells, and it was associated to other metabolic pathways in Z. mays plants. On the other hand, the complex joining and a role was a signaling to molecules have been reported.
The Assessment of material resource and cycle (MRC) of architectural finishing works for tall building construction
Authors: Hajji A M , Yulistyorini A , Dewi C P , Ahmad M H 
Published: December 2022

Abstract
This study is conducted to identify the application of GREENSHIP-based material resources and cycle (MRC) as part of green campus development in Universitas Negeri Malang (UM). The study focuses on the new two integrated classroom buildings in UM, which has nine floors with 44,917 m2 of total floor area. The parameters used in this study covers purchasing policy, waste management policy, the use of non-ODP refrigerant, existing conservation materials, and low environmental impact materials. The results of the study has shown that: (1) the prerequisite criteria for materials purchasing policies were fulfilled based on the use of environmentally friendly material categories in the building procurement process; (2) as for the waste treatment policy, there is the existence of a policy statement letter from the top management for waste processing and product saving campaigns; (3) the use of refrigerant without ODP are declared to be in compliance with the use of refrigerant type R410a with ODP value = 0; (4) since the building construction project use entirely new materials, the GREENSHIP requirement for used materials are not fulfilled; (5) 82.5% of materials for architectural finishing works are environmental-friendly as assessed from the materials specification; (6) regarding waste treatment practices, there is a separate waste processing facility for organic, inorganic and B3 type of waste as required by GREENSHIP.
Net Ecosystem Exchange of Carbon Dioxide in Rice Summer – Autumn crop of the lower Mekong delta, Vietnam
Authors: Pham H Q , Pavelka M , Dušek J , Nguyen V X , Vu K H N , Bui A T , Le S T 
Published: December 2022

Abstract
This study describes the net ecosystem exchange of CO2 in a rice summer-autumn growth season in the lower Mekong Delta, Vietnam. Eddy Covariance and bio-meteorological systems were used to continually record the net CO2 exchange between the paddy field and the atmosphere, together with environmental variables affecting the exchange rate. Rice plant growth (height, above-, and belowground biomass) was measured every 15 days during the entire crop. Our study paddy field emitted CO2 at the mean rate of 5.06 ± 2.49 µmol m-2 s-1, while the rate of CO2 capturing was 18.65 ± 11.76 µmol m-2 s-1 throughout the entire crop. The paddy field acted as a CO2 sink almost during the crop. The quick increase of leaf area from the 15th to the 60th day led to the rise in CO2 influx. The decrease in influx rate after the 60th day resulted from the senescence and death of the aboveground biomass. The drainage in the last ten days of the crop probably contributed to the increase in CO2 effluxes and hence, turned the paddy field into a CO2 source. Ambient temperature was an important factor affecting the rate of CO2 exchange affects the photosynthesis, plant respiration, photorespiration, and organic matter decomposition.
Evaluation and usability testing on integrated forest and land fire patrol application in Sumatera Region
Authors: Gusmendasari R , Sitanggang L S , Ardiansyah F , Syaufina L , Rahmawan H , Trisminingsih R , Wulandari  
Published: December 2022

Abstract
One of the causes of the annual decline in the forest area in Indonesia is forest and land fires. To prevent forest and land fires, the government carries out integrated patrol activities by forming a team for fire-prone area. A mobile application called Patroli Karhutla has been developed to facilitate the data recording obtained by the integrated patrol team. This study aims to produce recommendations for improvement in terms of usability based on evaluation and testing by users of the application in Sumatra. Evaluation and improvement of the application were conducted before testing. Testing includes two components, namely task success and efficiency, using several methods such as observation, interviews, focus group discussions, and concurrent think aloud. The test results on task success based on the level of success showed that the average task success of Patroli Karhutla application reached the target except for the profile and observation report. The average task success in scenarios done by respondents is 83.9 based on the indicators. The geometric mean-time of work on the scenario of the respondents has not reached the target and got two times the specified benchmark time. Errors and comments provided during testing by respondents produce some recommendations for improvement in the application for further development.
Chemical analysis of mangrove land in north Aceh
Authors: Harifia R , Irham M , Muhammadar  , Faisal  , Rusdi M 
Published: December 2022

Abstract
This study aims to determine the condition of water quality and the type of sediment fraction in the mangrove area around North Aceh in terms of physical and chemical parameters. Chemical analysis was carried out to test the content of heavy metals Pb, Cu, Cd, Hg, Fe and NH3, DO and physically analyzed to see the type and structure of sediment in addition to temperature, pH, brightness, and salinity in the mangrove area. This study used 3 sampling locations, namely the mangrove area around Pupuk Iskandar Muda (PIM), Lasloka, and Krueng Manee, 12 chemical and physical test parameters with a depth of 1-2.3 m for each sampling. The assessment was carried out through 2 stages of testing, namely in situ test, namely temperature, brightness, salinity, DO, pH. Meanwhile, ex-situ tests were carried out on TSS parameters, lead (Pb), copper (Cu), cadmium (Cd), iron (Fe), mercury (Hg) and ammonia (NH3). The results showed that almost all study areas exhibited that heavy metals were still below the permissible threshold except in the Krueng Manee area where the NH3, Cd and Hg tests showed values above the permissible or in a polluted state. The sediment characteristic analysis informed that round PIM and Krueng Manee is sandy loam dominated by Avicennia Sp mangroves and Loslaka area is muddy sand dominated by Rhizophora Sp mangrove species.
Distribution and breeding site of Scylla serata (Forskal) in south west coast of Aceh
Authors: Asiah M D , Syafrianti D , Wardiah  , Ulhusna F A , Zulfikar  
Published: December 2022

Abstract
Mangrove forests function as breeding, spawning, and nursery ground for various commercial such as mud crabs. This study aims to analyze the habitat characteristics of mud crabs in the mangrove ecosystem as a breeding location on the southwest coast of Aceh Province. This research was conducted in the mangrove ecosystem in the districts of Aceh Jaya, West Aceh, and Southwest Aceh.The station for sampling and data measurement was determined by the purposive method. The characteristics of habitat including pH, temperature, and salinity, were analyzed by Completely Randomized Design using ANOVA. Sedimentation, dominant flora and fauna species was presented descriptively. The results showed that the pH values in the three districts ranged from 7.22 to 7.25 and did not show a significant difference (P>0.05). The temperature values ranged from 25 to 35°C, showing a significant difference (P<0.05) and the salinity ranged from 11.33‰ to 19.50‰ showing a significant difference (P<0.05). Sedimentation such as mud, sand, litter, and former shellfish. The main flora species were Avicennia marina (Forsk.) Vierh, Rhizopora apiculata B, Rhizopora mucronata L, Nypah fructican W, Soneratia caseolaris L, and Pandanus tectorius Parkinson ex Zucc, whereas the fauna species are Scylla serrate (Forskål), Faunus ater L, Uca Sp, Crassostrea gigas (Thunberg). It can be concluded that the mangrove ecosystems in the southwest coast area are very potential to support the mud crab breeding process.
Andesite Mine Handling Strategy as an Effort to Minimize Significant Impacts of Environmental Damage in Aceh Jaya, Indonesia
Authors: Rizaldi M , Ramli I , Deli A 
Published: December 2022

Abstract
The growth rate of mineral mine exploitation is increasing due to the advancement and sophistication of industrial technology equipment, causing the carrying capacity of the environment to be exceeded and becoming a threat to the sustainability of natural resources and causing environmental damage. This research studies the impact of environmental damage on andesite mining activities in Gampong Kuala Ligan, Sampoiniet District, Aceh Jaya Regency, making a good mining management strategy for good mining practice. Environmental damage impact analysis using data collection and maps, weighting and scoring as well as strength, weakness, opportunity, and threat analysis. Overlay analysis shows the mining location including the eligible and conditionally eligible mining areas. Impact forecasts at the research site include topography, landslide process, erosion rate, sources of livelihood and income levels of the population, as well as public health, are the significant impacts. In contrast, land cover vegetation and crime rates are insignificant impacts. The matrix analysis shows that the research site is in very unfavorable situation. So a strategy turn around in needed which utilizes strengths to overcome threats. In the External Strategic Factor Analysis, the total score for strengths minus weaknesses is 2.29 and the total score for opportunities minus threats is -0.33. Analysis of internal and external factors shows that environmental management strategies that need to be carried out are implementing bench system mining technology, making drainage channels, providing socialization and making regional regulations that technically regulate mineral mining management for impact control and control in limiting land clearing and carrying out reclamation post-mining area. For occupational accident, risk management theory is carried out through elimination, substitution, engineering design, administration, and personal protective equipment (PPE).
Utilization of silica-enriched filter cake industry by-products as partial ordinary portland cement replacement
Authors: Bereda Yodit Birhanu , Tesfamariam Belay Brehane , Desissa Temesgen Debelo , Habtamu Gezahegn , Singh Balkeshwar , Ramulu Perumalla Janaki 
Published: December 2022

Abstract
In recent years, industrial byproducts have been converted into useful and valuable commercial items. Reusing these byproducts plays a crucial role to ensure the circular economy and thereby safeguard the environmental impacts. In Ethiopia, the Aluminate Sulphate chemical factory disposes of filter-cake waste materials in landfills that have high silica content. The factory is using pure kaolin and other raw materials for the production of Aluminum Sulphate and Sulphuric Acid by burning at high temperatures. By-products materials were collected from the factory and then calcined (post-treated) at 600 °C for 2h in a muffle furnace. From Atomic Absorption Spectrometry measurement result, it is confirmed that the post-treated (at 600 °C/2h) silica-enriched filter-cake waste materials have a similar composition to Metakaolin (MK). Post-treated filter cake (named MK) became more amorphous having high reactive silica with very low impurities as it was calcined and quenched rapidly. In this study, the properties of blended Ordinary Portland Cement (OPC)-mortar samples were investigated with the addition of heat-treated filter cake waste materials (0%–20%) as a partial OPC replacement. X-ray diffraction, Fourier Transform-Infrared Spectroscopy, Differential Thermal Analysis, Scanning Electron Microscope, and Atomic Absorption Spectrometry were used to investigate the properties of mortar samples that contain post-treated filter-cake (MK) materials and OPC-cement. The flexural and compressive strengths of 10% MK + 90% OPC-mortar samples were enhanced at early curing ages, 7 & 28 days. Moreover, the flexural and compressive strengths of OPC mortars with 15% MK have been improved at 28 days of curing age. However, 20% MK + 80% OPC blended mortars have not shown any improvement in mechanical properties. Setting time, soundness, water absorption, and apparent porosity of cement pastes with the addition of post-treated filter cake (MK) are also analyzed.
Frequent pro-climate messaging does not predict pro-climate voting by United States legislators
Authors: Wynes Seth , Dickau Mitchell , Kotcher John E , Thaker Jagadish , Goldberg Matthew H , Matthews H Damon , Donner Simon D 
Published: December 2022

Abstract
Legislators who frequently advocate for climate action might be expected to cast more pro-climate votes, but pro-climate messaging alone may not predict actual voting behavior. We analyzed 401 539 tweets posted by 518 United States federal legislators over the 6 months prior to the 2020 election and identified 5350 of these as containing climate-relevant messaging. Of the 4881 tweets that we coded as promoting climate awareness or supporting action (‘pro-climate’), 92% were posted by Democratic legislators while all 138 tweets undermining climate awareness or opposing action (‘anti-climate’) were posted by Republicans. Constituent support for Congressional climate action was only weakly related to the rate of pro-climate tweeting by legislators. Overall, we found that increased pro-climate tweeting was not a significant predictor of pro-climate voting when controlling for party affiliation and constituent support for climate action. We conclude that climate-concerned voters would be best served by using party affiliation rather than climate-related messaging to judge the pro-climate voting intentions of United States legislators.
Study of the wind-pressure distribution of flat-roof parabolic condensers based on wind-tunnel tests
Authors: Zou Qiong , Zeng Xuan , Wang Chao , Shen Yijun 
Published: December 2022

Abstract
The structure of parabolic condensers makes them susceptible to wind load because of their thin and large windward mirrors. In this paper, the wind pressure on a model of a condenser mirror (1:35) on multistorey flat roofs is analysed via pressure measurement in a wind tunnel. The mean wind-pressure distribution law of flat-roof condenser mirrors (including the change law with working conditions and the maximum distribution characteristics) and the distribution law of fluctuating and extreme wind pressure are obtained. Furthermore, by comparison with the ground-based condenser distribution law, similarities and differences between the two are obtained. Research results show that the wind-pressure distribution law of flat-roof parabolic condenser mirrors is the same as those on the ground, but the mean wind-pressure coefficient (absolute value) is generally ~30% smaller. Furthermore, the maximum effect is generally located at the windward mirror edge and the mirror is more susceptible to wind pressure in wind directions of 30° and 135°–150°. The results of this study can provide a theoretical reference for wind-resistant structure design and multistorey flat-roof condenser-related research.