bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of the Health of Community Forests Based on Rubber (Hevea brasiliensis) in Tulang Bawang Regency
Authors: Selvira  , Safe’i Rahmat , Yuwono Slamet Budi 
Published: November 2022

Abstract
The knowledge and awareness of community forest managers about the importance of forest health are still relatively low, especially in community forests based on rubber (Hevea brasiliensis) plantations. Whereas through forest health measurement, reliable data and information will be obtained that can be used to ensure the quantity and quality of community forests as a form of management decisions for community forest managers. This study aimed to determine the health status of rubber plantation-based community forests in Ujung Gunung Village, Menggala District, Tulang Bawang Regency. The stages of implementing this research include: determining the number of clusters based on management prescriptions (planting year and spacing), making cluster plots based on the design of Forest Health Monitoring (FHM) clusters, collecting data by measuring forest health indicators (productivity, vitality and site quality) based on the FHM technique, data processing and analysis were carried out by calculating forest health values. The results showed that the health status of rubber community forests had a range of values from 3.97 to 7.03. The average value of forest health based on rubber plants in Ujung Gunung Village, Menggala District, Tulang Bawang Regency is 5.59, which is included in the medium value range. Thus, the value of community forest health status is moderate.
Effect of Worm Fertilizer and Em4 on the Growth and Production of Red Spinach (Amaranthus Tricolor L.)
Authors: Wardhana Teguh Eka , Miftakhurrohmat A , Nurmalasari Intan Rohma 
Published: November 2022

Abstract
This study aims to determine the influence of kascing fertilizer and EM4 (Effective Microorganism 4) on the growth and production of red spinach (Amaranthus tricolor L.). This research was conducted at the Agricultural Extension Center of Sukodono Village, Sukodono Subdistrict, Sidoarjo Regency and observations continued in the agrotechnology laboratory of Muhammadiyah University sidoarjo. From February 2021 to March 2021. This study used a Randomized Group Design (RAK) with 11 treatments, namely control, chemical fertilizer, kascing 100 grams/tile + EM4 10ml/tile, kascing 100 gram/tile + EM4 15ml/tile, 100 gram/tile kascing + EM4 20ml/tile, 200 gram/tile + EM4 10ml/tile, 200 gram/tile kascing + EM4 15ml/tile, kascing 200 grams/tile + EM4 20ml/tile, 300 gram/tile kascing + EM4 10ml/tile, 300 gram/tile kascing + EM4 15ml/tile, 300 gram/tile kascing + EM4 20ml/tile, and repeated 3 times to get 33 units of experiment satian. The observed variables are: plant height (cm), stem diameter (mm), leaf area (cm2), number of leaves (strands), plant weight (grams), plant index (grams). The data was analyzed using ANOVA followed by BNJ test at 5% test level. The results showed that the combination of kascing fertilizer and EM4 had a real effect on the height of the plant, the diameter of the stem, the area of the leaves, and the number of leaves, and had no noticeable effect on the weight of the crop and the harvest index, the best results were shown in the treatment of kascing 300 grams /tile + EM4 20ml / tile, while the less maximum results were shown in the treatment of control on all observation parameters.
The Lethality Dose and Antioxidant Activity of Moringa Oleifera Leaves Extract
Authors: Pradana Dhigna Luthfiyani Citra , Rahmi Eldiza Puji , Muti Annisa Farida 
Published: November 2022

Abstract
Moringa oleifera leaves for traditional medicinal plants and as food has been widely used in Indonesia and several regions in the world by boiling Moringa oleifera leaves using water as a solvent before consumption. Moringa oleifera leaves contain active compounds such as phenols,flavonoids and tannins. These active compounds can be helpful as an antioxidant. The purpose of this study was to evaluate the antioxidant activity and lethality dose of the aqueous extract of Moringa oleifera leaves. The method used to obtain the LC50 value is using the Brine Shrimp Lethality Test. The final concentration tested Moringa oleifera leaves were 50, 100, 500 and 1000 ppm. Antioxidant activity test using UV-Visible spectrophotometric method with DPPH to obtain the IC50 value of Moringa oleifera leaf aqueous extract. The results of the LC50 of Moringa oleifera leaf aqueous extract were 475.15 ppm, and the IC50 value of Moringa oleifera leaf aqueous extract was 217.21 mg/g with a moderate antioxidant value. This study concludes that the aqueous extract of Moringa oleifera leaves is medium toxic based on Clarkson's toxicity criterion with moderate antioxidant value.
Earthquake monitoring system based on Wemos D1 Mini with notification via WhatsApp
Authors: Wisaksono Arief , Nur Novian Moh. 
Published: November 2022

Abstract
This prototype is a development from previous research with notification via WhatsApp on earthquake vibration detectors. This prototype consists of a power supply circuit as a voltage source and a voltage converter from AC to DC voltage, the Wemos D1 Mini microcontroller as the control center for all the components contained in the prototype, the SW-420 vibration sensor functions to convert the vibration source into a digital signal. Wemos D1 Mini is already equipped with wifi in it so that it can connect to the internet. If the sensor detects vibration, it will be sent directly to the microcontroller in the form of a digital signal and then send a WhatsApp notification to an Android smartphone in the form of a message. Earthquake monitoring system based on Wemos D1 Mini with notification via WhatsApp and using the SW-420 vibration sensor can detect small vibrations to large scale vibrations and immediately sound an alarm horn. With the Wemos D1 module which is directly connected to the internet, this tool can send notifications via WhatsApp with the help of the platform from Twilio. This prototype is also equipped with an LED as an indicator. Hopefully this tool can help the community a lot, especially in earthquake-prone areas.
Characterization of Sansevieria Fiber with NaOH Alkalization to Increase Tensile Strength
Authors: Widodo Edi , Mulyadi  , Tjahjanti Prantasi Harmi 
Published: November 2022

Abstract
Sanseviera fiber has physical and chemical characteristics that support it to be used as a biocomposite booster. The fiber length dimension obtained from decortivation can be maintained well even with a simple and inexpensive method. The tensile strength can be maintained well in the 10% NaOH alkaline treatment which is 1,35 N. The lignin and hemicellulose content can be lost effectively, thereby increasing the compatibility of adhesion with the resin. The alkali treatment was carried out at room temperature of 260 C, soaked for 4 hours, then rinsed to remove dust and other impurities. Alkalization serves to remove the lignin content in the fiber. The results of the FTIR test showed that the remaining lignin still persisted in the fiber at an absorption range of 1600 cm-1 with an aromatic group C=C which was shown from the FTIR peak graph. These results support the exploration of sansevieria fiber as a biocomposite booster.
Design and Construction of Thermoelectric Generator with Comparison of Sun and Water Heat Temperatures
Authors: Zainuri Ahmad Agung , Akbar Ali 
Published: November 2022

Abstract
In today's technological developments, many alternative and new renewable energies have been launched to reduce the impact of global warming. However, the availability of new renewable energy sources in Indonesia is still not fully utilized. As an alternative to deal with these problems, thermoelectric is one of the solutions in overcoming energy problems that are always increasing from year to year along with technological advances. On the other hand, one of the alternative energy sources that can be utilized is solar energy. The use of this energy can be done by utilizing the heat temperature. By using a thermoelectric generator, the results of the heat obtained from solar energy are converted into electricity. This is included in order to obtain a renewable and environmentally friendly energy source. With the existence of one of these problems, it encourages the researcher's plan to make a "DESIGN AND CONSTRUCTION OF THERMOELECTRIC GENERATOR WITH COMPARISON OF SUN AND WATER HEAT TEMPERATURES" which will be carried out regarding the efficiency of thermoelectric generator design that utilizes simple materials in order to convert heat energy into electricity. The sun's rays are focused on the heat receiver in the design so that the difference between hot and cold temperatures is obtained which will be converted into electrical energy by the Setback effect method. In this study, 10 types of thermoelectric generator TEC 12705 were used. The test was carried out in two stages, namely in the first stage. TEG circuits are connected in series, in the second stage the TEG circuits are connected in parallel. for the heat conductor material using zinc aims to obtain an efficient heat temperature and is delivered to the hot side of the TEG. After the analysis, the average result of 10 TEC rotation in a series circuit is the total voltage of 33.27 V which is divided by 9 times, the test results in 3.69 V, while in a parallel circuit the total voltage is 1.7 V and then divided by 9 times the test results are obtained. 0.19 V. From the analysis of the average output voltage of the series and parallel circuits it can be concluded that the series circuit has a larger output, in accordance with Kirchhoff's II law theory where the sum of the voltages in a closed path is equal to zero, or the sum of the voltages on each its constituent components that make up a closed path will be equal to zero.
Analysis of Landslide Prone Areas as the Basis for Landslide Disaster Mitigation in Bungbulang District of Garut Regency
Authors: Susetyaningsih Adi , Nurhakim Aris Ihsan 
Published: November 2022

Abstract
Landslides are natural disasters that often result in property losses, fatalities and damage to public facilities. This research aims to map landslide-prone locations and determine mitigation strategies that are appropriate to the conditions of the region at the research site. The parameters used to determine landslide prone areas refer to the standards that have been set by Puslitanak Bogor, namely, rainfall, slope slopes, land use, geological structures, and soil types. Overlay, scoring, weighting, and classification methods are carried out on all five parameters by utilizing software based on Geographic Information Systems (GIS). Landslide distribution point with a very high category of land movement is found in all villages in Bungbulang District with an overall area of ±218 ha but there are five villages that have a very large threat of loss to the economy and even fatalities including Bojong Village, Mekarbakti Village, Cihikeu Village, Mekarjaya Village and Wangun Jaya Village. Based on the map of the spread of landslide potential that has been made, a structural mitigation strategy is needed in the form of building a ground retaining wall (TPT) in Bojong Village which is at the coordinate point utm X 789824,828282 Y 9175193,14279, Mekarbakti Village with coordinate point UTM X 788411.150969 Y 9178084,18717, Mekarjaya Village with coordinate point UTM X 784761.725735 Y 9175112.74001, relocation of residents' settlements in Wangun jaya Village with utm X coordinate point X 781667.425142 Y 9177593.35493, and the transfer of land functions in Cihikeu Village with coordinate point UTM X 786159.83242 Y 9177593.35493, as well as by improving maintenance of existing infrastructure infrastructure. Education to the community is also very necessary in maintaining and improving the carrying capacity of the environment, so as to create a resilient and ready society for disaster threats.
Effect of Sand Grain on Adsorption of Xanthan Gum and Polyacrylamide
Authors: Kurniadi Hardi Maifra , Fathaddin Muhammad Taufiq , Riswati Shabrina Sri 
Published: November 2022

Abstract
Polymer flooding is an Enhanced oil recovery (EOR) method using chemicals, such as xanthan gum and polyacrylamide which are widely used in the field. Polymer flooding can improve the mobility of the injection fluid, but in the reservoir the polymer has an interaction with sand known as adsorption which causes some of the polymer to be bound to the surface of the pore of sand, so that it has an impact on the ineffectiveness of the injection. The purpose of this study want to determine and compare the effect of sand grain on the adsorption of xanthan gum and polyacrylamide polymer solutions. Based on the experiment results, it was found that the increase in adsorption was proportional to the increase in polymer concentration. From two polymers used, xanthan gum showed lower adsorption than polyacrylamide. Based on the sand grain, the adsorption that occurs is greater in the grain size for large sand compare small.
Carbonate Reservoir Characterization Based on Rock Type Analysis in Minahaki Formation and Tomori Formation, "HK" Field, Banggai Basin
Authors: Khairi Hilmy , Burhannudinnur Muhammad , Herdiansyah Firman 
Published: November 2022

Abstract
The research area is located in the Banggai Basin, Central Sulawesi, which part of the Eastern Arm of Sulawesi Island that originated from the collision between Banggai - Sula Microcontinent and West Arm Volcanic Arc from Sulawesi Island. This research has reservoir target in Minahaki Formation and Tomori Formation those are carbonate rocks. The problem limitation of this research is to characterize carbonate reservoir based on the distribution of rock types. The intention of this research is to analyze carbonate reservoirs with petrophysical properties and analyze reservoir characterization based on rock type distribution, while the purpose is determine the petrophysical property values of the Minahaki Formation and Tomori Formation, then determine the distribution of rock types for characterizing the reservoir rocks. The research methods begin with literature study, data collection, and data analysis. The results of the petrophysical analysis and pay zone in Minahaki Formation obtained an average: net pay thickness is 359.5 feet – 398.5 feet, vshale 23.55% - 34.48%, PHIT 13.33% - 22.84%, PHIE 9.9% - 16.89%, Sw 61.23% - 76.95%, and permeability 610.5 mD – 1360.1 mD. Meanwhile, Tomori Formation obtained an average: net pay thickness is 52.5 feet – 679 feet, vshale 16.53% - 34.7%, PHIT 3.5% - 7.87%, PHIE 2.77% - 6.09%, Sw 26.01% - 42.97%, and permeability 39 mD – 161.9 mD. There are six rock type distribution in the research area those are rock type 1 is ≤ 0.245 micrometers, rock type 2 is 0.314 – 0.48 micrometers, rock type 3 is 0.5 – 0.965 micrometers, rock type 4 is 1.04 – 2.35 micrometers, rock type 5 is 2.36 – 15.08 micrometers, and rock type 6 is 19.66 – 78.82 micrometers.
Adsorption of Activated Carbon from Coal on Coal Briquette Combustion Flue Gas
Authors: Suliestyah  , Permata Sari Indah 
Published: November 2022

Abstract
Coal briquette is expected to be able to become low-cost alternative energy source. However, coal briquette combustion produces gas emission such as SO2, NOx, CO, and CO2 that cause air pollution. The objective of this research is to minimize flue gas emission by using activated carbon made from low level coal such as lignite, obtained from South Sumatera. Activated carbon formation is conducted by using chemical activation method, with ZnCl2 composition variations of 25%, 30%, 35%, 40%, and 45% and coal grain size of 40 mesh, 60 mesh, 80 mesh, and 100 mesh. Carbonization process was conducted at 500°C for 2 hours. Carbonization was conducted by using an air tight steel box infused by nitrogen along the process. The result of this research shows that the composition of ZnCl2 40% and coal 60% with 80 mesh of coal grain size, is the optimum condition to produce activated carbon with highest iodine value of 1323 mg/g. in the application of coal briquette flue gas adsorption experiment, the activated carbon is highly effective in absorbing NO2 with adsorption volume of 87.6 - 90.8%. SO2, CO2, and poly aromatic hydrocarbon (PAH) gas adsorption levels are varied from 27% to 47.8%, but not really effective in absorbing CO gas with adsorption capacity of 11.5%. The activated carbon utilized in this research has the potential to be developed as effective adsorbent for coal combustion exhaust gas emission.
Fuel and Boiling Point Analysis in Mixing Between Ethanol with Bio-Diesel and Diesel Fuel
Authors: Setiawan Budi , Bhikuning Annisa 
Published: November 2022

Abstract
Global warming can be caused by pollution in the environment. Pollution comes from combustion from fossil fuels. Therefore, it is important to study some renewable energies for alternative fuels other than fossil fuels. Blending between ethanol to biodiesel and diesel fuel is one practical solution that can be applied. This research was conducted by making a sample of the fuel to be tested with a mixture of ethanol - biodiesel formula (10%, 25% and 35%) and for a mixture of ethanol - diesel fuel (10%, 25% and 35%). The fuel properties were tested such as viscosity, density, boiling fuel, and cetane index. The results show that the addition of ethanol to biodiesel and diesel fuel can produce better fuel properties.
Granitic Basement Fracture Analogue by Using Integrated Digital Outcrop Model and Fieldwork, at Muaro Silokek, West Sumatra
Authors: Koesmawardani W T , Rudyawan A , Sapiie B 
Published: November 2022

Abstract
The study aims to determine fracture characteristics such as orientation, fracture attributes, fracture density distribution, and mineral composition of quartz and feldspar. The study used photogrammetry data to know the distribution and geometry of macro-scale fracture, linear scanline and windows scan data to understand the characteristics of mesoscale fracture attribute, and thin section rocks data from oriented samples to determine petrographic analysis and micro-scale fracture. After analyzing each of these data, analog basement fractured reservoir modeling could be built from integrating the data and modeling parameters based on available fieldwork data. The fault in the research area is represented as a Riedel shear with the orientation direction of NNW-SSE, NE-SW, and ENE-WSW. The fracture density is influenced by its position on the fault and increases in the fault damage zone. The granite type in the study area was divided into three types, namely alkali feldspar granite, syeno granite, and monzogranite. Each granite type has a different response to fractures and shows that the fracture density will increase with the greater quartz and k-feldspar in the fault damage zone. Fracture permeability values are strongly influenced by the geometry of fracture position, fracture aperture, and fracture length. This study produced a new perspective for fractured basement reservoirs, especially for granitic rocks, generally the primary target for basement fracture reservoirs along Sumatra.
Middle Phase Behavior of SLS Surfactant Bagasse at Intermediate Crude Oil
Authors: Aditya Renato , Riswati SS , Sumirat Iwan , Bharoto  
Published: November 2022

Abstract
The middle phase emulsion is the most important parameter in the compatibility test that determines the success of the surfactant in the Enhanced Oil Recovery (EOR) process. The purpose of this research was to observe the mid-phase emulsion formed on the use of Sodium Lignosulfonate (SLS) surfactant at various concentrations. One of the compatibility tests that will be used is the phase behavior test. Phase Behavior is carried out to determine whether SLS surfactant forms a middle phase emulsion when used in a crude oil. The method used in the phase behavior test is 2 mL of surfactant solution with a certain concentration mixed with 2 mL of crude oil which is inserted into a scaled test tube. Then the surfactant and crude oil solution in the test tube was shaken slowly. During the test, the test tube was placed in an oven at a temperature of 60° C for 21 days. The first observations were made during the first shaking process, then observed at 30 minutes, 60 minutes, 2 hours, 1 day, 2 days, 7 days, 14 days and 21 days. The formation water salinity were used at 40,000 ppm, 60,000 ppm and 80,000 ppm. From the results of this phase behavior test, the best mid-phase emulsion was formed at a surfactant concentration of 2.5% at 40,000 ppm of formation water salinity with an emulsion value of 11.3%. While the 60,000 ppm and 80,000 ppm formation water salinity formed the upper phase emulsion. From this research, it can be concluded that the formation of the middle phase emulsion of SLS surfactant bagasse in the intermediate crude oil was influenced by the salt content of the formation water used.
Analysis of The Efficiency of Value Chain on Livestock (Case Study: Chicken Meat)
Authors: Wahyuni Hana Catur , Indriastuti Ika Ratna , Azzahra Rima 
Published: November 2022

Abstract
In health, livestock products are a source of animal protein which is important for human health. However, in its development, there is a problem of inefficiency in the value chain of livestock products. This study used a case study on the chicken meat value chain. The research objective was to identify the value chain flow of chicken meat, identify the types of inefficient activities, and measure the level of inefficiency of each of these activities. The research method used is Failure Mode Effect Analysis (FMEA). The research was conducted in two stages. The first stage is carried out through observation to identify value chain flows and types of inefficient activities. The second stage is used to conduct an assessment so that the results of the inefficiency level are obtained. The results showed that there were several actors in the chicken meat value chain, including breeders, chicken distributors, chicken slaughter companies, chicken meat distributors, and chicken meat retailers. Overall, there are 25 inefficient activities in the chicken meat value chain. Activities with a high level of inefficiency occur in the process of slaughtering chickens. Therefore, the process of slaughtering chickens needs to be a priority for improvement in the future
Analysis of eco-label certification implementation on eco-friendly products in Indonesia
Authors: Isharyadi F , Ayuningtyas U , Kiemas R A , Aditiyawan  , Ulfah F , Purnamasari B D , Pratiwi A I 
Published: November 2022

Abstract
The significant increase of population, especially in Indonesia, has an impact on consumption per capita. This phenomenon causes a domino effect on the environment quality. Concern and awareness of consumers towards the environment is important, one alternative that can be done to protect the environment is to use environmentally friendly (eco-friendly) product. Eco-friendly products are currently marked with an eco-label affixed to a product, which indicates that a product is produced with due regard to the principles of environmental sustainability. This study aimed to identify and analysed implementation of eco-label certification on eco-friendly products in Indonesia. This research is based on a literature study of the current implementation of eco-label certification on eco-friendly products. Furthermore, the results showed that various types of eco-label certification have been developed for eco-friendly products in Indonesia. The implementation of eco-label certification has been carried out on several products; generally eco-label certification uses the 14000 series standard as a reference in conducting certification. Eco-label certification is expected to support the goals of the Government of Indonesia in sustainable development. In addition, the trend of demand for eco-friendly products by global consumers will certainly provide competitiveness for Indonesian products while still paying attention to environmental sustainability.