bluuebunny/crossref_metadata_2025 huggingface dataset:
Physical Vulnerability of Surabaya due to Earthquake Based On Rapid Visual Screening
Authors: Habieb A.B. , Iranata D. , Nurlaela S. , Anggoro R. , Syafitri R.A.W.D.
Published: November 2022

Finding of new faults in Surabaya city has attracted many researchers to evaluate the seismic resilience of the city. A major earthquake in Surabaya may cause a huge losses for the country due to its massive population and large business activities. In this research, a physical vulnerability map of buildings in Surabaya was developed, particularly due to the updated potential earthquake in Surabaya. The results are expected to be used as part of a mitigation and risk reduction strategy for earthquake disasters in the city of Surabaya. The sampled buildings were aggregated in the scale of regional blocks and urban villages in Surabaya, considering the structural type and typology of the buildings. The aggregation process to capture the distribution of existing buildings uses various inputs from landsat maps, google maps, google street view, CKTR Surabaya (Cmap), and openstreetmap Surabaya. Spatial mapping in the scale of regional and village blocks with more precise data will be an essential information in earthquake risk reduction strategies.
Using the TELEMAC model for analyzing the hydrodynamic regime in the Vam Nao River, Vietnam
Authors: Tra Nga N Q , Tran Kim T , Ho Nghia H , Huynh Hoai C , Nguyen Bay T
Published: November 2022

The Vam Nao River is located Vietnamese Mekong Delta’s upstream, plays the role of transferring flow from the Tien River to the Hau River and balances the discharge for two of these main branches. Hence, the hydrodynamic regime is very complicated. In 2017, there was a severe riverbank failure, resulting in the loss of many houses and negative impacts on the local people. So, in this research, the TELEMAC model was applied to simulate flow and bed change, combined with field surveys, thereby analyzing the hydrodynamic regime of this river. The model was calibrated using the water level, discharge and suspended load data. The simulation results show that the flow has only one direction from the Tien River to Hau. The maximum velocity in the flood season is 1.66 m/s, the discharge is 8298 m3/s (in 2017), the flow after the confluence appears the vortex. Moreover, the confluence area has a rather high erosion rate, up to 1.2 m/year. According to data collected nearly 30 years, the Vam Nao River’s topographic data signify the riverbed is growing to expand and deepen, over 43 m after the confluence and distributed near the riverbank. With this development trend, it is necessary to continuously monitor to provide early warnings to minimize damages due to the risks of riverbank failure.
Flash Flood Susceptibility Mapping in Sungai Pinang catchment using Weight of Evidence
Authors: Saleh A , Sabtu N , Bunmi M R
Published: November 2022

Flash floods are one type of natural disaster that frequently occurs in Malaysia, especially in urban areas. This paper’s objective is to develop the flash flood susceptibility mapping (FFSM) using weight of evidence (WOE) in the Sungai Pinang catchment. The Sungai Pinang catchment is located in the highly urbanised areas of Georgetown. The FFSM was developed using six flash flood conditioning factors: elevation, slope, rainfall, land cover, distance from the river, and lithology. The study showed that the WOE method is capable of producing high accuracy, with a success rate of 0.839 and a validation rate of 0.923 for the receiver operating characteristic’s area under the curve (AUROC).
Development of a k-Nearest Neighbor (kNN) Machine Learning Model to Estimate the SPT N-Values of Valenzuela City, Philippines
Authors: Galupino J , Dungca J
Published: November 2022

Due to the intricate geological formation of geomaterials, they often exhibit a range of attributes at different sites on a given site. This has posed a problem for geotechnical engineers, as they require correct soil and rock information to plan and design geotechnical construction projects. Numerous efforts have been made at the local level to bridge this disparity by standardizing the quantification of soil parameters; nevertheless, these studies have limitations, and there are still areas with ambiguous or incorrect information. To help close this gap, this article will demonstrate an innovative technique for predicting representative Soil Penetration Test (SPT) N-values for each Valenzuela City Barangay/Zone using a k-Nearest Neighbor (k-NN) Machine Learning Model. Borehole data from the city of Valenzuela were collected and analyzed for this study. The k-NN Model’s input parameters are the borehole’s latitude, longitude, and depth, while the response parameters are the SPT N-Values. The k-NN technique was used to train the input data, identify patterns, and make classification decisions for the SPT N-Values per depth per location in Valenzuela City. The centroids of each Barangay/Zone in Valenzuela City were also extracted in Latitude and Longitude format and utilized to deploy the k-NN Model. To illustrate the findings, we presented subsurface information from Valenzuela City with SPT N-Values. For validation purposes, the accuracy rate of the machine learning model was obtained. The model’s hyperparameter in terms of k was tuned to determine if the accuracy rate could be improved.
The condition of upper soil layer that causes severe damage to land due to liquefaction
Authors: Muhanifah H , Adi A D , Faris F
Published: November 2022

An evaluation using the liquefaction potential index (LPI) was still applicable to the site conditions in Central Sulawesi in 2018’s earthquake with Mw 7.5. In some areas, severe liquefaction occurred and destroyed many buildings. This study was conducted to determine the depth of the liquefaction layer in any soil conditions that may cause severe damage to the land. This is intended to obtain guidance to select an area for housing, especially for low-budget housing. The possibility of land severely damages due to liquefaction occurred when the LPI value was more than 15. The analysis was conducted by creating various models of soil lithologies using the simplified procedure based on the standard penetration test (SPT) data. The upper layer was designed to have liquefaction potential, while the lower layer had not. The results were presented in graphs of correlation of the upper layer depths with the LPI greater than 15 using the N-SPT data ranging from 5 to 20 with a fines content (FC) of 5%, 15%, and 35%. Based on these results, selecting a safe location for housing could be done easily to prevent a massive disaster in the future.
Determination of Critical Environmental, Social, Infrastructure, and Economic Indicators as Evaluation Checklist for Pre-Project Abandonment Plan Assessment in-line with Sustainable Development Goal Plan
Authors: Abdullah SN , Aznah A , Hakim Mohd , Md Din MF , Ponraj M , Mat-Taib S
Published: November 2022

The increasing number of project abandonment because of the Novel Coronavirus pandemic 2019 (Covid-19) calls for better management of abandonment projects. The outbreak of Covid-19 has affected the environment, economy, and society aspects globally. In a developed country like Malaysia, the requirement to submit an abandonment plan is stipulated under the Environmental Guidelines in Malaysia (EGIM) 2016. Therefore, this study aimed to develop a Sustainable Pre-Project Abandonment Plan Assessment Checklist in Malaysia that is in line with the Sustainable Development Goal (SDG) 2030 aspirations. This new Sustainable Pre-Project Abandonment Plan Assessment Checklist in Malaysia is comprehensively structured; is expected to minimise the negative impact of the abandonment process towards the environment, socio-economy, and efficient management of infrastructure; and complies with the related legislation in Malaysia. In this study, data was collected and analysed using NVivo12. It consisted of findings from documents reviewed such as legislations, journals, and books. From the NVivo12 analysis, the results showed 28 critical indicators for abandonment plan assessment and related legislation that synchronises with SDG 2030 is required to develop the Proposed Sustainable Pre-Project Abandonment Plan Assessment Checklist in Malaysia.
Development of Microalgae-Bacteria Aerobic Granular Sludge for Landfill Leachate Treatment
Authors: Khen C , Ilmasari D , Yuzir A
Published: November 2022

Over the past few decades, aerobic granular sludge has become favorable biotechnology in wastewater treatment. Combining the AGS process with microalgae technology is desired to achieve higher treatment efficiency, especially for high-strength wastewater. This study aims to investigate the effectiveness of microalgae-bacteria AGS in treating landfill leachate. The photo-sequencing batch reactor, inoculated with Acutodesmus obliquus, was fed with old synthetic leachate, and run for 30days. The result showed that chemical oxygen demand (COD) removal up to 96%. The initial ammonia concentration was 130mg/L and achieved an efficiency of up to 80.77%. At the same time, the average removal of the phosphorus was 19.5mg/L, equal to 48.68%. The result of microalgae-bacteria AGS can produce the fast-settling properties of the granules throughout the experiment.
Energy efficiency and nutrient removal performance: comparison between several types of activated sludge process
Authors: Muzaffar Wan Mohd Bukhary W , Aznah A. , Halim Hakim
Published: November 2022

The operation of a wastewater treatment plant entails a huge amount of electricity. The majority of energy inputs are consumed by aeration systems to support biological processes for treated wastewater. Urban wastewater treatment plants are energy-intensive facilities that consume significant amounts of energy. For conventional activated sludge systems, 25% to 60% of the operating costs are associated with energy use. Malaysia’s wastewater treatment plants have fallen short in terms of technological advancement in the sewerage industry. The goal of this research is to analyse and make a comparison of the capabilities of the sequencing batch reactor (SBR) and other activated sludge (AS) system treatment plants in Selangor, Malaysia. High energy electricity consumption was an important issue that affected the operational cost and development of wastewater treatment plants (WWTP). The result and discussion for the analysis had been presented into comparison result for each objective of this research studied which was to determine lowest energy efficiency, to assess highest nutrient removal efficiency and compliance rate for each WWTP process plant. This paper presents best practices that can be implemented and adapted by operators in their pursuit of energy and reduce cost or expenses in the sewage treatment plant.
Effect of N Fertilizer on the Amount of Chlorophyll and the Quality of Tomatoes (Lycopersicon Esculentum)
Authors: Andaresta Alisha , Miftakhurrohmat A. , Nurmalasari Intan Rohma , Arifin Saiful
Published: November 2022

This study aims to determine the effect of N fertilizer on the amount of chlorophyll and quality of tomato fruit (Lycopersicon esculetum), carried out in the Kemantren Village, Tulangan District, Sidoarjo Regency, from July until September 2020. The experiment was arranged in a single factor using a randomized block design. This factor is the dose of N fertilizer with 5 treatments, namely control, 70 kg / ha, 80 kg / ha, 90 kg / ha, 100 kg/ha and repeated 4 times so that 20 experimental units are obtained. The research data will be tested with analysis of variance, and if real or very real results are obtained, it will be followed by the 5% BNJ test. The results showed that the dosage treatment of N fertilizer was not able to provide real results for all observation variables which included total chlorophyll (mg / l), vitamin C content (%), fruit weight (g), fruit volume (ml), fruit hardness (Pa), and the number of fruits per plant.
The Effect of POC Consetration and Planting Media on the Growth and Production of Pakcoy Aawi Plants (Brassica Rapa L).
Authors: Puspita Cindy Eka , Prihatiningrum Andriani Eka , Arifin Saiful
Published: November 2022

This research was conducted in the village of jiken Tulangan sidoarjo. Aims to determine the effect of POC dosage and growing media on the growth and yield of pakcoy mustard. As wel as to determine the correct dosage of POC and planting media for the growth of pakcoy and mustard in order to obtain the highest yield. The experiment was arraged in a factorial design used was a rendomized block design (RBN) with the first factors P1, P2, P3 and the second factor M1, M2 which ware repeated 4 time, in order to obtain 24 experimental units. The variabels observed ware plant height, number of leaves, dtem diameters, leaf area, wet weight, and antioxidants. Were analysed using ANOVA 5% to determine the differences between treatments. The results showed that admistration of POC dosage and the planting medium had in teraction on the variable leaf area at the age of 40 days after which the highest average was 26,63 treatment of soil and compost growing media with POC 15ml/liter (M1P1) compared to other treatments and the lowest average was 23,50 treatments of soil planting media, compost, cow manure with a POC dosage of 20ml/liter (M2P2). And there was no interaction on the observation variables of plant height, number of leaves, stem diameter, and wet weight. A good antioxidant test occurs in the treatment of soil and compost growing media with a POC dosage of 25ml/liter (M1P3) with value of 124,226 which is classified as moderate antioxidant because the IC50 value is between 100-150 μg/ml.
Ethanol Extract of Lemongrass Leaves (Cymbopogon nardus (L.) Rendle) as an Inhibitor to Enhancement of Cholesterol Levels in Wistar Rats
Authors: Dewi Puspa Sari , Rachmawan R Lucky , Prasayundari Feby Sabila , Choirunnisa Anna
Published: November 2022

Cholesterol is a type of lipid found in the body that aids in the digestion of food and is required for the formation of hormones. Even yet, increased levels in the blood can raise the risk of coronary heart attacks. Medicinal plants, in addition to pharmacological therapy, can be used to prevent levels from rising. Lemongrass (Cymbopogon nardus (L.) Rendle) is one of these herbs. The goal of this study was to see if an ethanol extract of lemongrass leaves could lower cholesterol levels in wistar rats. Maceration was used to extract the ethanol from lemongrass leaves. In pharmacological testing, 25 rats were separated into five groups: the control group, the comparison group for simvastatin 0.9 mg/kg bw, the test group at 13 mg/kg bw, 26 mg/kg bw, and 52 mg/kg bw, and the test group at 13 mg/kg bw, 26 mg/kg bw, and 52 mg/kg bw. Cholesterol 1g/kg bw and PTU 100 mg/kg bw were employed as inductors and were supplied for 14 days with the test preparation. The levels of cholesterol in the blood were tested. The results demonstrated that the ethanolic extract of lemongrass leaves could considerably reduce cholesterol levels (p<0.005) when compared to the control group. The ethanol extract dose of 52 mg/kg bw had the greatest inhibitory effect on cholesterol levels, implying that the ethanol extract of lemongrass leaves had anticholesterol potential.
Phytochemical Content and Antioxidant Activity of Forest Honje Leaf (Etlingera Hemisphaerica (Blume) R.M. Sm)
Authors: Riyanti Soraya , Sri Windyaswari Ari , Kahfi Syam Akhirul , Karlina Yenni , Anjelista Dinar , Faramayuda Fahrauk , Aulia Nanda , Ratnawati Julia
Published: November 2022

The forest honje (Etlingera hemisphaerica (Blume) R.M.Sm) belongs to the Zingiberaceae family, and its leaves are green on top and red on the bottom. The goal of this research was to investigate the phytochemical content of forest honje leaves' crude medicine, the antioxidant activity of various extracts using the DPPH method, and the levels of flavonoids and polyphenols in forest honje leaves using AlCl3 and the Folin Ciocalteu reagent. Extraction utilizing a reflux graded technique with n-hexane, ethyl acetate, and ethanol as subsequent solvents. The antioxidant activity of each extract was determined using the reagent 2,2'-diphenyl-1-picrylhydrazyl (DPPH). Flavonoids, polyphenols, tannins, quinones, monoterpenes-sesquiterpenoids, and steroids/triterpenoids were found in the phytochemical screening of forest honje leaf crude medicine. The antioxidant activity of n-hexane, ethyl acetate, and ethanol extracts was measured in IC50 values of 637.92 ± 0.2 μg/mL, 80.55 ± 0.2 μg/mL, and 49.37 ± 0.5 μg/mL, respectively, while quercetin had an IC50 value of 7.47 ± 0.2 μg/mL. Forest honje leaves crude drug had a flavonoid content of 67.85 ± 0.5 mg QE/g crude drug and a polyphenol content of 96.0 3± 0.6 GAE/g crude drug.
Antihyperuricemia Effect of Piper crocatum Ruiz & Pav Leave Ethanol Extract in Male Wistar Rats
Authors: Wahyuningsih Sri , Noviana Resi Nadia , Sholihah Puspa Sari Dewi , Vikasari Suci Nar
Published: November 2022

Hyperuricemia is characterized by an increase in blood uric acid levels above normal. One of the traditional plants used to reduce uric acid levels is red betel leaf (Piper crocatum Ruiz & Pav). This study aimed to examine the uricostatic effect of the ethanolic extract of red betel leaf on male Wistar rats. The animals were divided into 6 groups, namely the normal, control, Allopurinol 9 mg/kg BW, extract dose 11.5, 23 and 46 mg/kg BW. Induction was done by giving a diet high in purines (chicken liver juice) for three days and potassium oxonate 250 mg/kg bw on the 4th day one hour before giving the test preparations in all groups except normal. Measurement of uric acid levels was carried out at 0, 60, 90, and 120 minutes after potassium oxonate induction. The test results showed that the extract at all doses had a uricostatic effect with the best effect being 46 mg/kg BW compared to the control P<0.05) but the effect was not better than allopurinol
Antiinflammation and Antioxidant Effect of Ethanolic Extract of Ageratum conyzoides Leaves
Authors: Vikasari Suci Nar , Sukandar Elin Yulinah , Suciati Tri , Adnyana I Ketut
Published: November 2022

Traditionally, Ageratum conyzoides is used to treat several inflammatory diseases, such as rheumatism and as wounds healing. This study aimed to evaluate the anti-inflammatory and antioxidant effects of 50% ethanol extract of A.conyzoides leaves. Anti-inflammatory assay was carried out in vivo using the 1% carrageenan induction method. The animals were divided into 5 groups, control, diclofenac sodium, extract at doses of 22.5, 45 and 90 mg/kg BW. Antioxidant activity was assayed by the DPPH method. The results showed that the extract at all doses gave an anti-inflammatory effect compared to the control (p<0.05), where the best results were given by extract doses of 45 and 90 mg/kg BW and equivalent to the comparison of diclofenac sodium (p>0.05). The results of the DPPH showed that the IC50 of the extract was 153.63 μg/ml and the antioxidant activity index value was 0.52 with moderate antioxidant activity. It is expected that antioxidant activity may play a role with anti-inflammatory effect of A.conyzoides ethanol extract.
Study In-Silico Oleanane Triterpenoids in Aquilaria spp. as a Covid-19 Antiviral
Authors: Anugrah R. , Mumtaz R.K. , Suryasaputra D.
Published: November 2022

Covid-19, a disease characterized by Severe Acute Respiratory Syndrome, is caused by Coronavirus-2 (SARS-CoV-2). This virus causes tissue damage and a decrease in the respiratory system. Agarwood (Aquilaria spp) is a plant that has various pharmacological activities, including relieving respiratory diseases. One of the several secondary metabolites reported in Aquilaria spp. is oleanane triterpenoids, suspected of having antiviral activity. This research was aimed to determine the potential of oleanane triterpenoids from Agarwood as a covid-19 antiviral by in silico study. The research methods were molecular docking, prediction of Lipinski rules of five, and prediction of ADME. As a receptor, main protease (Mpro) Covid-19 was used. The four oleanane triterpenoid compounds in Agarwood demonstrated a higher affinity for the main protease covid-19 (ΔG 11-oxo-β-amyrin = -9.8 kcal/mol, ΔG hederagenin-an = -9.6 kcal/mol, ΔG 3β-acetoxyfriedelane = -9.4 kcal/mol, ΔG ursolic acid = -9.5 kcal/mol) than Lopinavir (ΔG = -6.2 kcal/mol) and Remdesivir (ΔG = -7.2 kcal/mol). The major amino acids involved in ligand and receptor interactions are methionine 49 and 165, proline 168, glutamine 189, arginine 188, and threonine 25. According to the prediction of Lipinski's rule of five and ADME, hederageninan is potential for development as oral medicine.
Diversification of Sea Cucumber (Holothuria Scabra) Through Pempek Sensoric Test
Authors: Ohoiwutun Maria Kristina , Rahantoknam Santi Penina Tua , Beruatjaan Mariana Yermina , Rahantoknam Meyske Angel
Published: November 2022

A person's level of preference for a food product is largely determined by the raw materials and processing methods. One of the food products with high economic value and potential nutritional value is the sea cucumber Holothuria scabra. H. scabra has potential nutritional value to be developed as a [1] healthy food. So far, sea cucumber products are only processed in dry form. This study aims to study the process of processing pempek made from fresh sea cucumbers (wet) and determine the level of preference of the panelists through a sensory test of pempek made from fresh sea cucumbers. Holothuria scabra used is H. scabra. This research method is an experimental method using Independent Samples T Test analysis. Sensory testing was carried out using a hedonic scale [2] using 30 untrained panelists. Assessment parameters include: appearance, smell, taste, and texture. The rating scale used is 9 = like very much, 8 = like very much, 7 = like, 6 = like somewhat, and 5 are neutral. The results showed that the sea cucumber pempek was highly favored by the panelists. The level of preference for the appearance of pempek sea cucumbers at the Watuar location was 8.3% and the Tutrean location was 8.27%; the smell of sea cucumber pempek at Watuar and Tutrean locations 8%; the taste of sea cucumber pempek at the Watuar location was 8.3% and the Tutrean location was 8.2%; and the texture of the sea cucumber pempek at the Watuar location 8.03% and the Tutrean location 8.17%.
Fuel Parameter Analysis from Kerosene Blended with Biodiesel and Diesel Fuel
Authors: Jati J F , Bhikuning A
Published: November 2022

Biodiesel is one of the potential materials that can be used to substitute for diesel fuel. The raw material is made from vegetable oil that can be renewed, produced periodically, and is easily obtained. The analysis was carried out by using kerosene blended to diesel and biodiesel. Kerosene is a colourless and flammable hydrocarbon liquid, and it was used as fuel oil. The purpose of this research is to analyse the parameters from Kerosene Blended with Biodiesel and Diesel Fuel. The materials are from Biodiesel and Diesel Fuel blended with kerosene with different percentages 80, 85, 90 and 95. The method was used by ASTM D445-19a, ASTM D1298-12b, ASTM D4737-10, and ASTM D86-17. The results of the analysis uses 5% to 95% volume, show that the A95-BS model mixture of biodiesel and diesel is poor, besides that A80-BS and A85-BS with a value of 375, in each viscosity 2.456 cSt kg/m, the performance is excellent for two mixtures, and A80-S model with a value of 357 with viscosity 2,378 cSt kg/m is excellent performance for one type of mixture.
A new airfoil based on banana leaf midrib morphology for horizontal axis wind turbine
Authors: Rosa F , Soetikno P , Suweca I W , Moelyadi M A
Published: November 2022

The airfoil profile of this study is based on plant morphology, which is rarely modeled in airfoil profiling. Designing, modeling, and analyzing the aerodynamics of one of the projected morphological parts of the banana leaf midrib that forms a 45-degree angle with the longitudinal axis as a distinct new airfoil. The profile of the LM-45 airfoil has a thickness of 16.28%, a chord length of 1500mm, a Reynolds number between 3E5 and 7E5, and a wind speed between 3 and 7 meters per second. An aerodynamic analysis using QBLADE and ANSYS FLUENT determined the glide ratio and pressure distribution across the airfoil surface. LM-45 has a maximum glide ratio of 123.07 at an angle of attack of 2 degrees and a Reynolds number of 7E5, and a minimum glide ratio of 70.02 at an angle of attack of 4 degrees and a Reynolds number of 3E5. As indicated by the glide ratio, the banana leaf midrib profile can be applied to the airfoil profile for wind speeds between 3 and 7 m/s at an attack angle between 2 and 4 degrees.
The compliance of water conservation aspects of clean water, wastewater, and rainwater management for residential buildings to support the green building concept
Authors: Ayuningtyas U , Susanto D A , Buwana E , Emelia T
Published: November 2022

Water conservation is one aspect of the green building concept. Water conservation includes using a water meter to determine the amount of usage, calculating water use, reducing water use, using plumbing tools/features that can save water use, water recycling processes, alternative water sources, water reservoirs, and efficient use of water. The purpose of this study was to evaluate water conservation aspects in housing in accordance with the provisions of Greenship Homes version 1.0. This study uses a quantitative descriptive method by comparing housing water conservation conditions with Greenship criteria. Based on the results of the study, the evaluation results of the suitability of water conservation aspects in the Perumnas are 52% in total. In each of the criteria for water-saving fixtures, rainwater harvesting criteria, water-saving irrigation criteria, and wastewater management the value is below 50%. It is necessary to make improvements or make some efforts to be able to save and manage water wisely and effectively. These efforts include using a shower in every house, making a simple technology for harvesting rainwater, and installing a grease trap. With these efforts, the suitability evaluation of water conservation aspects in supporting the green building concept in house buildings can be achieved.
The nexus between ecological competence, forest area management, and sustainable agroecosystem performance for communities around Mount Merbabu National Park (MMbNP)
Authors: Esthi R B , Irawan N C , Setiawan I
Published: November 2022

MMbNP, with an area of approximately 5,725 hectares through several regulations, is designated as a conservation area and limits human activities to preserve agroecosystems and support natural and cultural tourism activities. MMbNP has the potential to provide food and a source of income for people living around the area, but the intersections that occur cause social, economic, and ecological conflicts of interest. This study aims to determine the relationship between ecological competence, forest area management, and sustainable agroecosystem performance. With a total of 60 respondents, this study used purposive location selection methods and snowballed random sampling to determine the sample size. The data analysis examination uses a partial least square and a descriptive-analytical method. The results of the study state that ecological competence is significant for forest area management. Forest area management has a significant effect on sustainable agroecosystem performance. Environmental competence significantly affects the performance of sustainable agroecosystems through forest area management. The conclusion is that implementing systematic and comprehensive management stimulates the community’s active participation in silviculture and biodiversity and increases environmental competence. The performance of sustainable agroecosystems strengthens the role of government, the local economy, health and nutrition, community and culture, and also promotes environmental conservation.
Lifecycle Assessment of the Contact Smart Card Product in Indonesia
Authors: Murti Z , Yanuar A I , Tasurun D P , Pratiwi A I , Aditiyawan  , Suryana Y , Rochmadi T
Published: November 2022

Smart Contact Cards have been widely used in Indonesia, especially in the banking sector. Bank Indonesia data shows an increase in the production of Card-Based Payment Instruments (APMK) consisting of Credit Cards, Debit Cards and Debit+ATM Cards. This is also followed by an increase in transactions using APMK from year to year. The large amount of contact Smart Card waste that is disposed of every year presents a major risk of environmental pollution. This study evaluates the potential environmental impact of the contact Smart Card product based on a life cycle assessment (LCA). The input data for all elements are obtained from the literature study with Gate-to-Gate System Constraints. The assessment was carried out with the help of OpenLCA v.1.8.0 software, ELCD 3.2 database and CML (Baseline) impact assessment method. The results of the analysis show that Marine aquatic ecotoxicity is a significant potential environmental impact with a magnitude of 96%, followed by Acidification and Human Toxicity. Each contact Smart Card has 62,04526 kg1,4-DBeq in Marine Aquatic Ecotoxicity Potential, 2,22473 kgSO2eq as Acidification Potential and 0.37285 kg1,4-DBeq as Human Toxicity Potential. Further examination also shows that most of the impact comes from the choice of materials used. Copper material as the main material for the chip module plays an important role in providing environmental impact.
Adaptation test for upland rice genotypes in Balunijuk village rice fields with ultisol type
Authors: Mustikarini E D , Prayoga G I , Santi R , Wardani K
Published: November 2022

Innovation to produce upland rice superior varieties is by developing local upland rice varieties with high yield and lodging resistance. Upland rice varieties also must have high adaptability in suboptimal land. This research aims to identify and determine the upland rice line F8 that is tolerant to lodging with high yielding potential.The research was carried out from September 2021 to January 2022 in Balunijuk Village Rice Fields, Bangka Regency. This research was conducted using an experimental method. The design used was a Randomized Block Design (RBD). The treatments consisted of 5 F8 lines and 5 comparison varieties. Data analysis used ANOVA followed by Duncan Multiple Range Test (DMRT). The results showed that generally upland rice genotypes were not able to adapt to inundation conditions, low pH, and Fe stress. Genotypes that were able to adapt were PBM UBB 1 (red rice), Danau Gaung and 21B-57-21-21-23 line (white rice), with the lodging index of 0% for these three genotypes, and a Fe toxicity scale with a value of sensitive. The genotype with the lowest yield was Inpago 8 and 23F-04-10-18-18 line. Genotypes with leaf length, number of grain per panicle, number and weight of pithy seeds per plant height increased seed yield/plot.
Corporate Sustainability for Indonesia’s Sustainable Society
Authors: Miftahadi M F , Rachman I , Matsumoto T , Kusuda T , Utomo T H A , Pradipta A , Mahardika S B
Published: November 2022

Economy and corporate activities are significant elements relating to sustainable drawbacks. The 2030 agenda is a supremely transformational vision ensuring no one is left behind and guarantees full benefits for today and future generations. However, there is a limited understanding of their relationship and how their critical root causes them. Therefore, this study explores the complicated history of Indonesia’s sustainability within a systematic qualitative review from primeval documents to recent trends data. As a result, the pattern of nature degradation concerning nation growth has been interpreted. A corporate sustainability perspective has been designed as a problem solver. The knowledge management of sustainability and carbon management hierarchy tools have also been introduced. Hopefully, this study expresses extensive reasoning for Indonesia’s road map to a sustainable society.
Importance of standardization and sustainability approach for higher biodiesel blends implementation
Authors: Febriansyah H , Aziz A , Soraya D F , Septiani M
Published: November 2022

This study aims to assess the role of the National Standardization Agency of Indonesia (BSN) and identify indicators of sustainability for higher biodiesel blends after implementing B30. This study considers quality conformity enforcement and sustainability perspective for sustainable biodiesel implementation. Surveys and interviews were conducted to gather primary data as a qualitative approach from biodiesel stakeholders. This study results that BSN represents a national standardization body in Indonesia and has contributed to biodiesel development and policy to implement biodiesel blends in Indonesia. Since 2006, BSN has released three series of Indonesia National Standard (SNI) 7182 for biodiesel standards. The implementation of the standard is regulated by the Ministry of Energy and Mineral Resources (MEMR) which enforce biodiesel business entities to conform with the biodiesel quality and the volume of biodiesel allocation. MEMR regulation number 41 the year 2018 is applied to give a fine for biodiesel business entities that do not comply. Since 2020, Indonesia has increased the biodiesel blends to 30% or B30. Increasing biodiesel contents could reduce the emission, while Indonesia still referenced EURO 2 standard and has a plan to apply EURO 4 standard in 2021.
Developing a business incubator measurement model
Authors: Suhandojo  , Askinatin M , Pradnyapasa D A , Heldini N
Published: November 2022

The industrial revolution 5.0 leads to a society 5.0 focusing on human welfare that pays attention to environmental sustainability and can begin with the process of creating environmentally friendly products. This study aims to prepare an ecosystem for creating environmentally friendly products by the following 2030 SDGs agenda through the support of the creation of an incubator organization as a vehicle for the growth of new competitive entrepreneurs. The methodology is compiled by elaborating the dimensions formed from the organization of a business incubator into variables based on the results of literature studies, in-depth interviews, and constructed assumptions. PI-ST2P Pelalawan Technopark is an example of measuring business incubators. This model can be the material for planning the development of the function of a business incubator. In addition to these two dimensions, it is necessary to develop the identification of variables and criteria according to providing organizational networks and the type of incubation services.
The effect of chemical activation of biochar on biogas purification
Authors: Pertiwiningrum A , Rhema T , Wuri M A , Fitriyanto N A , Tontowi A E
Published: November 2022

Biogas become one of many alternative energies that are claimed to contribute to greenhouse gas mitigation. The improved technology to gain good quality biogas has been developed over many years such as carbon dioxide adsorption and methane enrichment. Implementing biochar-based renewable sources can replace activated carbon-based fossil fuels. This study is developing activated biochar-based rice husk by chemical activation to replace 25% volume of natural zeolite to adsorb carbon dioxide in biogas purification. Three treatments of adsorption time variation were used in this study: 10, 20, and 30 minutes. The results showed that activation of biochar repaired the capability of biochar to adsorb carbon dioxide and methane levels in biogas. The best result was shown by biogas purification for 30 minutes with a methane enrichment of 24% compared to biogas before purification. Our results highlight the activated biochar based-rice husk becomes a candidate for an adsorbent in biogas purification and the chemical activation process as a strategy to improve the capability of the adsorbent.
The nexus between green strategic consensus, innovation, and performance evidence from eco-friendly food agro-industry companies in Indonesia
Authors: Suswadi  , Irawan N C , Aulia N N
Published: November 2022

Many companies with an agro-industry base have not implemented a green strategy in their business, so it impacts strategic consensus, product innovation, and company performance. Barriers to implementing a green vision and strategy occur because many top management teams have not yet reached a green consensus in their business. The green strategy consensus is when all levels of management, from top to bottom, agree and commit to putting in place a work culture, business model, and eco-friendly product innovation. This study aims to determine the effect of the green strategy consensus on eco-friendly product innovation and the performance of food agro-industry companies in Indonesia. We distributed 100 questionnaires through LinkedIn to the top management team at food agro-industry companies in Indonesia, with the result that 50 people returned the questionnaire. Data analysis used partial least squares on three variables and 15 indicators. The results showed that the green consensus positively affected environmentally friendly product innovation. The green consensus also positively affects the performance of food agro-industry companies in Indonesia. Eco-innovation has a positive effect on company performance. Finally, the green consensus significantly affects company performance through eco-innovation.
Life cycle assessment of fly ash bottom ash in coal power plants: A review
Authors: Adinugroho T P , Ayuningtyas U , Anggraeni P , Febriansyah H , Susila I M A D , Sasongko N A , Darmayanti N T E
Published: November 2022

Fly ash (FA) and bottom ash (BA) from coal combustion give environmental impacts and health problems. As the demand for coal increases, FABA quantity and environmental impacts will also increase. Thus, to reduce the environmental impact, the utilisation of FABA is key. To properly utilise FABA as a sustainable material, FABA’s life cycle in Indonesian power plants needs to be studied. For initial work and comparison, this study conducted a literature review related to Life Cycle Assessment (LCA) of FABA from coal-fired power plants. The literature review used descriptive method, with the criteria for the main articles’ selection are published papers within the last ten years. This paper discusses system boundary, inventory, environmental impact, improvement efforts, and challenges. The main beneficiaries of FABA are construction and geotechnical industries, other studies have also shown a wider range of uses in various fields. The wide utilisation of FABA faces challenges from the intrinsic character variation, non-technical issues, standards, and knowledge for proper utilisation in composite materials.
Utilization of flue gas desulfurization gypsum waste as a partial substitution of cement for the production of concrete bricks
Authors: Rifai A S , Gunawan I , Hambali R
Published: November 2022

This research aims to determine the use of flue gas desulfurization gypsum waste as a partial substitution of cement for the manufacture of concrete bricks. Flue gas desulfurization gypsum is waste from the tin processing that takes place. This research uses flue gas desulfurization gypsum waste compositions of 5%, 15%, 25%, and 35% by weight of cement. The design of the concrete brick was mixed with a design compressive strength value of 5 MPa and is included in the class II quality category according to SNI 03-0349-1989 concerning concrete bricks for masonry walls with a water-cement factor value of 0,4. The size of the test object is 40 x 10 x 20 cm, where the making of concrete brick uses a hydraulic press machine with a total sample of 40 pieces. The results showed that the use of flue gas desulfurization gypsum could increase the compressive strength with a substitution percentage of 5% with an optimum average compressive strength value of 8,569 MPa and the optimum water absorption value with a 5% substitution percentage of 9,315%. The percentage above 5% experienced a decrease in the average compressive strength and an increase in the average water absorption capacity of the concrete bricks.
Towards a sustainable new state capital (IKN): sustainable zoning plan formulation based on quantitative zoning approach
Authors: Ristanto D A , Jatayu A , Sihotang R Z F
Published: November 2022

Indonesia’s state capital relocation to Kalimantan Island started with the ratification of the Bill on the State Capital (IKN). The relocation was one of the development strategies to replace the old “Java-Centric” development approach. This change will hugely affect the socio-economic-environmental condition on the Kalimantan Island itself, especially around Balikpapan-Samarinda corridor, as that region is the focus of the new state capital development. Urban expansion and conurbation in that corridor will have various impacts, including changing economic structure, environmental degradation, and especially social imbalance and exclusion of local/traditional tribes in that region. This research will aim to evaluate and formulate a better zoning plan in the IKN area with a shifted focus on improving and preserving environmental quality and social inclusivity of traditional villages. This research will use a quantitative zoning method based on urban containment and the forest city concept. This research results in the improvement of the zoning plan in the IKN area. There is a special cultural enclave zone consisting of the traditional village and its cultural activities as conservational areas. The zoning regulation is also improved to direct the expansion process in Balikpapan-Samarinda corridor and prevent urban sprawl, allowing the region to develop more sustainably.
Preparation and Characterization of Liquid Smoke from Wood Sawdust Azadirachta excelsa (Jack) M. Jacobs and its Application as a Natural Rubber Coagulant
Authors: Triawan D A , Nasution A V , Sutanto T D , Nesbah N , Widiyati E , Adfa M , Banon C , Nurwidiyani R
Published: November 2022

Azadirachta excelsa(Jack) M. Jacobs (AE) sawdust is a waste from the furniture industry that is not utilized and causes environmental problems. AE sawdust that contains cellulose, hemicellulose, and lignin can be used as liquid smoke for various applications. This study aims to perform the production, characterization, and application of liquid smoke as a latex coagulant. AE liquid smoke was produced at ± 300-350 °C by pyrolysis temperature for 6 hours. The yield of AE liquid smoke was 30.59% with characteristic smoke in odor, reddish brown in color, the pH value was 3.58 ± 0.015, specific gravity was 1.08 g/mL, and total organic acid contain was 10.410 ± 0.2%. FTIR spectrum of liquid smoke shown OH, C=O and C-O stretching vibrations of carboxylic acids. The results showed that along with the increase in the concentration of AE liquid smoke that latex coagulation timing was accelerated. Interestingly, at a concentration of 14% AE liquid smoke demonstrated a faster coagulation time than the positive control. The application of AE liquid smoke into the latex was accelerated the coagulation time, removing unpleasant odors from natural rubber, and improving the latex texture but changing the color of natural rubber from white to grey and it might be a substitute for formic acid as a natural rubber latex coagulant.
Eco-design practice towards sustainable furniture: A Review
Authors: Septiani M , Putri N C , Verma G , Sasongko N A
Published: November 2022

Eco-design is a practice that incorporates environmental aspects into all stages of the product development process with the intent to reduce the environmental impacts throughout the lifecycle of a product. This study aims to elaborate on eco-design strategies in the development of sustainable furniture. This paper is based on published research on eco-design, eco-design in furniture, and sustainable furniture. A study of European product policy regarding eco-design is also included. A combination of eco-design qualitative and quantitative tools offers a practical way of eco-design implementation. Ecodesign practice adapted from integrating DfE and LCA is presented. With the presented case study, a more comprehensive design decision can be made if the eco-design approach is used. The environmental aspect of the product may influence how products are designed, selected, and manufactured in comparison to using the traditional design method.
Adsorption of Fe metal in groundwater by magnetite-kaolinite
Authors: Mardiah I A , Sari F I P , Adisyahputra
Published: November 2022

The magnetite-kaolin was synthesized via coprecipitation method with variation kaolin-magnetite = 1:1, 2:1, 3:1 and the material used to remove Fe metal in groundwater. The kaolin clay, magnetite, and kaolin-magnetite composite was characterized by X-ray diffraction, Fourier transform infra red, and adsorption efficiency test for Fe metal ion. The results indicated magnetite particle adhering to the surface of kaolin by lewis interaction. The results for adsorption kaolin:magnetite = 1:1, 2:1, 3:1 in groundwater showed better results compares to kaolin and magnetite. The optimum kaolin-magnetite adsorb Fe metal in 2:1 ratio with a stirring time of 60 minutes and the eficiency adsorption values is 73.35%. Based on this results, kaolin-magnetite composite can be relied in water treatment with the advantages of high adsorption capacity and the presence of magnetic properties to facilities the procces of transferring adsorbent and adsorbat.
Utilization of drone for reclamation at the Batu Ampar block PT Timah Tbk
Authors: Gaunna A , Andini D E , Franto
Published: November 2022

The Batu Ampar block is one of the ex-mining blocks in Bangka Regency where land revegetation has been carried out in 2019 and 2020. Observation of land realization is carried out by testing the accuracy of mapping using a base map from drone data and the success of the canopy cover level in accordance with the accuracy of the classification of the base map based on Regulations Head of the Geospatial Information Agency Number 15/2014. The results of processing and analysis show that the CE90 and LE90 accuracy test values for drone data geometry are 0.44 m and 0.86 m for the GCP georeference is said to be in class 3 on a scale of 1:2500 and class 1 on a scale of 1:5000. In the process without GCP georeference, the CE90 and LE90 values of 8.5 m and 6.8 m do not correspond to any class on the ideal scale for the layout of the Batu Ampar reclamation block mapping.
How to tackle the global challenge of falls?
Authors: Seppala Lotta J , van der Velde Nathalie
Published: November 2022

Worldwide, falls and accompanying injuries are increasingly common, making their prevention and management a critical global challenge. The wealth of evidence to support interventions to prevent falls has recently (2022) been distilled in the first World Falls Guideline for Prevention and Management for Older Adults. The core of falls prevention includes (i) risk assessment and stratification; (ii) general recommendations on optimising physical function and mobility for all and (iii) offering a holistic, multidomain intervention to older adults at high risk of falls, in which the older adult’s priorities, beliefs and resources are carefully considered. In recent decades, sustainable and adequately resourced falls prevention has proved challenging, although evidence suggests that suboptimal implementation of falls prevention is ineffective. Future research should focus on understanding the most successful approaches for implementation. To further optimise falls prevention, recent developments include technological innovation to identify and prevent falls, including exergaming. Further work is warranted to understand how to best incorporate the concepts of frailty and sarcopenia in falls prevention and management. This themed collection includes key articles in the field of falls prevention, covering several topics including risk factors, effective interventions, older adult’s views, implementation issues and future perspectives.