bluuebunny/crossref_metadata_2025 huggingface dataset:
Mungbean-maize rotation improved soil properties and maize yield in dryland
Authors: Jaya I K D , Sudirman  , Sudika I W
Published: April 2021

One of the conditions to improve maize yield in dryland areas is by improving soil properties. This paper reports on the improvement of soil properties and maize yield resulted from rotating mungbean and maize in two consecutive years. In the first year, mungbean was grown as a cover crop at different population densities (250,000, 375,000, and 500,000 plants ha−1) combined with desiccation times of 28 and 35 days after planting in April 2019. Two weeks after the desiccation, maize seeds were planted at a density of 9 plants per m2. In those cover crop plots and a control treatment without a cover crop. All the treatments were replicated three times and were arranged in a Randomized Block Design. Following the maize crops, mungbean was grown again (except in the control plots) from October to December 2019 at the same population densities as before, combined with two seed classes; stock seeds and extension seeds. The mungbean was harvested in mid-December 2019 and after biomass determination, the residue was incorporated into the treatment plots. In mid-January 2020, maize seeds were planted at the same population density as before in all plot treatments, including control plots. Soil properties were determined at 60 days after maize planting. The results revealed that nitrogen, phosphorous, and potassium in the soil increased substantially by 52.6, 282.9, and 110%, respectively after two years of the rotation. There was an average of 44.7% increase in maize yield resulted from the highest mungbean population density plots as compared to the control treatment. It is concluded that mungbean-maize rotation is an effective way to improve maize yield in dryland areas.
Prevalence and degree of gastrointestinal nematode infection of horses (Equus caballus) used as public transport in Mataram city, Indonesia
Authors: Tirtasari K , Atma C D , Kholik
Published: April 2021

Horses of Equus caballus species which are used as public transportation in the form of Cidomo (traditional horse cart) in Mataram City need to be considered about their welfare and health. A common problem in horses is gastrointestinal nematode worms that can induce negative health effects on horses. Furthermore, the infective larvae of nematodes can survive in the environment under optimum conditions of temperature and humidity. The purpose of this study was to determine the prevalence and degree of infection of gastrointestinal nematodes in horses used as public transportation (Cidomo) in Mataram City. The cross-sectional study was conducted from July to August 2020 to collect feces of Cidomo horses at 8 traditional markets in Mataram City. A total of 131 feces of horses as Cidomo were taken directly from the rectum of Cidomo horses by the purposive method. The Morphology, prevalence of nematode egg, and Egg per gram (EPG) for a degree of infection were used examined using the floating McMaster technique. Morphological data and the prevalence of gastrointestinal nematodes in horses (Equus caballus) as Cidomo were presented descriptively, and the EPG value was analyzed by the Anova test, while the degree of infection has been categorized as low, medium, and high levels. The eggs of gastrointestinal nematodes (Trichosstrongylus spp, Strongylus spp, and Capillaria spp) have been found in feces of horses as Cidomo at 8 traditional markets in Mataram City with a prevalence of 74.04% (97/131). The EPG value of the gastrointestinal nematode of feces of horses as Cidomo between 8 traditional markets in Mataram City showed no significant difference with p > 0.05 (p-value = 0.227). Overall the degree of infection of gastrointestinal nematodes in horses (Equus caballus) as Cidomo in Mataram City was a medium level with a mean value of EPG = 547.628 ± 82.059 The results showed that the gastrointestinal nematodes have been infected horses as Cidomo in 8 traditional markets in Mataram City with a medium level of infection degree.
Improving Maize (Zea mays L.) growth and yield by the application of inorganic and organic fertilizers plus
Authors: Mulyati  , Baharuddin A B , Tejowulan R S
Published: April 2021

Maize or corn is the most important crop as a staple food in many places in the world. It is mostly grown in dryland area with very low in soil fertility. Therefore this study aimed to investigate the effect of inorganic and organic fertilizers plus on the soil chemical changes, growth and yield of maize. The experimental designed was Randomized Complete Block Design (RCBD) in the pattern of factorial, which consisted of two factors. The first factor was Organic fertilizer plus (P), which consisted of three levels namely : P0 (without organic fertilizer plus), P1 (10 ton ha−1), P2 (20 ton ha−1), and the second factor was inorganic fertilizer (A), which consisted of three levels, namely : A0 (without inorganic fertilizer), without inorganic fertilizer), A1 (150 kg ha−1) and A2 (300 kg ha−1), with three replication. Data collected were analyzed by using analysis of variance at 5% level and significant treatments effect were separated with honestly significant difference at P ≤ 0.05. Results indicated that there were no interaction between inorganic and organic fertilizers plus rates on growth, yield and soil chemical changes. The use of organic fertilizers plus significantly improved the growth, yield and soil chemical properties. Dealing with the agronomic properties of maize showed that the application of inorganic fertilizer significantly increased the plant weight by increasing the plant height, leaf numbers and leaf area.
Phytochemical screening and antioxidant activity of Gyrinops tea from agarwood plantation on Lombok island, Indonesia
Authors: Wangiyana I G A S , Supriadi  , Nikmatullah A , Sunarpi  , Putri D S , Rosidah and S
Published: April 2021

Phytochemical screening and antioxidant analysis are essential standardization procedure for the agarwood tea product. Gyrinops tea is an agarwood tea that has been emerged on Lombok Island recently. This research aims to carry qualitative phytochemical analysis and antioxidant activity assay of Gyrinops tea from several agarwood plantations on Lombok Island.Gyrinops versteegiileaves as the raw material of Gyrinops tea were taken from several agarwood plantations on Lombok Island, including Lingsar, Rarung, Kekait, Pejaring, and Mataram. There are three steps onG. versteegiileaves processing method into Gyrinops tea, including sterilization, drying, and chopping.G. versteegiileaves were brewed in distilled water at 70°C for 5 minutes to make Gyrinops tea. Phytochemical screening of Gyrinops tea was conducted with a qualitative assay identification of Flavonoid, Alkaloid, Saponin, and Tannin. The antioxidant assay of Gyrinops tea was investigated based on DPPH radicals scavenging activity. The result shows that Gyrinops tea positively contains tannin in high dosage and Flavonoid in a moderate dose with no alkaloid and saponin. Gyrinops tea samples have various antioxidant activity from moderate to strong based on IC50 measurement. It could be concluded that different sampling location has affected antioxidant activity of Gyrinops tea.
Antiaging effect of brown macroalgae Sargassum cristaefolium gel formulation by inhibition of collagen degradation
Authors: Prasedya E S , Martyasari N W R , Ilhami B T K , Padmi H , Widyastuti S , Sunarwidhi A L , Sunarpi H
Published: April 2021

Recent strategies for skin protection against UV radiation have included the incorporation of natural photoprotective agents, such as gel formulations. Our previous study demonstrated the UV photoprotective activity of brown macroalgae Sargassum cristaefolium ethanol extract (SCE). In this study, we aim to determine the optimum gel formulation for the incorporation of SCE. In addition, the UV antiaging activity was evaluated in vivo with mice as animal models. Gel formulation with various concentrations of Glycerin, Carbopol, and TEA was evaluated with the simple lattice design (SLD) method in Design-Expert Software. The optimum gel formula containing 0.1% SCE inhibited collagen degradation in mice skin irradiated by UV-A. It can be concluded that the gel formula successfully incorporates SCE and possibly provides antiaging activity in vivo by inhibition of collagen degradation. However, further investigations need to be done to conclude the photoprotective activity of SCE gel formulation (SCEg). In addition, exploration of the Sargassum brown macroalgae based gel formula should be considered for cosmeceutical applications.
The combination of pumpkin and jackfruit seeds for making tortilla
Authors: Nurhayati  , Ihromi Syirril , Dewi Earlyna Sinthia
Published: April 2021

Consumers’ tendency to prefer practical and ready-to-eat snack products such as tortillas provides new ideas for food diversification that can be accepted by the community. Pumpkin has been developed as an alternative food ingredient that has been processed into flour. It has been used as an alternative for making some products. The high nutritional content of pumpkin, vitamin A and vitamin C is very suitable for raw material in making tortillas expected to produce tortillas with a high level of proteins and vitamins. Not only pumpkin flour, but there is also a potential ingredient for making tortillas, the jackfruit seeds. Jackfruit seeds are waste from jackfruit. This waste becomes a problem of environmental pollution if not addressed immediately. Jackfruit seeds still have a high nutritional content. This study aims to determine the best formulation combination between pumpkin and jackfruit seeds for making tortillas and determine the effect of the combination of pumpkin and jackfruit seed on tortillas’ chemical and organoleptic properties. The research data were analyzed using an experimental design, CRD (completely randomized design) with one factor, the pumpkin and jackfruit seeds combination, treatment A (pumpkin 20%: jackfruit seeds 80%), B (pumpkin 35%: jackfruit seeds 65 %), C (pumpkin 50%: jackfruit seeds 50%), D (pumpkin 65%: jackfruit seeds 35%), E (pumpkin 80%: jackfruit seeds 20%) which is repeated three times to get 15 units trial. The analysis results were continued with the Honestly Significant Difference test (HSD) at the 5% level. The parameters were moisture content, ash content, fiber content, and organoleptic tests (color, aroma, texture, and taste). The results showed that the combination of pumpkin and jackfruit seeds significantly affected the content of moisture, ash, and fiber, and the score of color, taste, and texture but did not affect the tortilla aroma score. The result showed that the decrease of the pumpkin using, the decreased of the moisture, ash, and crude fiber content. The best treatment based on chemical and organoleptic properties is treatment C (50:50). In the future, issues related to the environment will become a concern for humanity in line with industrialization, which causes harmful excess in increased waste. For this reason, the development of agro-industry in the future is a sustainable agro-industry, such as the use of jackfruit seed waste into tortillas.
Combination of inorganic and organic fertilizer in rice plants (Oryza sativa) in screen houses
Authors: Sunarpi H , Nikmatullah A , Sunarwidhi A L , Jihadi A , Ilhami B T K , Ambana Y , Rinaldi R , Widyastuti S , Prasedya E S
Published: April 2021

The demand for agricultural commodities increases from year to year, so farmers also have to increase the production of agricultural products. Farmers can increase agricultural yields through the excessive use of inorganic fertilizers. This causes many problems for the environment, so it is required to reduce the use of inorganic fertilizers in agricultural land. This study aimed to determine the effect of a combination of organic and inorganic fertilizers on the growth and yield of rice. This research was carried out in a screen house in Jatisela, Gunung Sari Subdistrict, Lombok from June to October 2020. The three treatments used in this study were P0 N0 with no organic and inorganic fertilizers; P0 N100 with a dose of 100% inorganic fertilizer and P50 N50 with a dose of 50% organic fertilizer and 50% inorganic fertilizer. The results showed that the combination of organic fertilizers (50%) and inorganic fertilizers (50%) can increase the growth and yield of rice in the screen house compared to control plants and plants which given only 100% inorganic fertilizers. In summary, the combination of organic and inorganic fertilizers can reduce the use of inorganic fertilizers.
Seagrass conservation needs based on the assessment of local scale economic value on the diversity of its associated biota in the South Coast East Lombok, Indonesia
Authors: Zulkifli L , Syukur A , Patech L R
Published: April 2021

The existence of seagrass has strategic value for the economic sustainability of small fishermen, especially in providing fish and related economic biota. This research aims to show the economic value provided by seagrass ecosystem services in providing biota associated, both as a primary or secondary source. Field surveys and analysis of effects on production (EOP) show that capture fisheries and other marine biota collectors, both crustaceans and mollusks associated with are directly utilized by local communities on the southern coast of the island of Lombok, Indonesia. The estimated economic value of fish and marine biota used in the Seagrass Ecosystem area is US$ 40,669.00 and US$ 21,105.00 per hectare per year or a total of US$ 61,774 per hectare per year. This value demonstrates the potential importance of seagrass ecosystems so that seagrass conservation is needed for the sustainability of coastal communities and for the sustainability of marine biota in the future.
Effect of Rhizophora sp mangrove leaf extract on mice blood glucose levels
Authors: Efendi A , Aini  , Halid I , Ustiawaty J
Published: April 2021

Diabetes mellitus is a disease that occurs due to increased blood glucose levels (hyperglycemia) due to disorders of the pancreas. Mangrove leaves are known as herbal plants that can reduce blood glucose levels because it contains flavonoid compounds that can repair damaged pancreatic β cells and stimulate pancreatic β cells to produce the hormone insulin. This study aimed to determine the effect ofRhizophoraleaf extract administration in reducing blood glucose levels of mice. This research was an experimental laboratory with the approach the post-test only control group design. This test used 5 groups, consisting of negative control group, positive control group (Glibenclamide 5 mg/kg BW), KP1 (extract 250 mg/kg BW), KP2 (extract 500 mg/kg BW), KP3 (extract 700 mg/kg BW). Measurement of fasting blood glucose levels using glucometer. The results showed that the administration ofRhizophoraleaf extract in the KP1, KP2, and KP3 treatment groups was able to reduce blood glucose levels compared to before being treated, although the decrease was not yet up to normal limits. The conclusion was that theRhizophoraleaf extract was able to reduce fasting blood glucose levels with the highest percentage reduction in KP2 at a dose of 500 mg/kg BW by 29%.
Phytohormone content in brown macroalgae Sargassum from Lombok coast, Indonesia
Authors: Sunarpi H , Nikmatullah A , Ambana Y , Ilhami B T K , Abidin A S , Ardiana N , Kirana I A P , Kurniawan N S H , Rinaldi R , Jihadi A , Prasedya E S
Published: April 2021

Exessive use of inorganic fertilizers in rice production systems, causes various negative effects in the environemnt, such as reducing soil fertility and increases pollution, which disturbs agricultural sustainability. Understanding raw materials for developing organic fertilizers which are cheap and adaptive to our environment, is an important study recently. Many researchers reported that brown algae could increase growth and yield of several species of plants. This due to brown algae extract contain plant growth hormone and essential elements to stimulate growth and production of plants. This article report growth and yield of rice plants suplied with mixtured extract of brown algae. Several species of brown algae were collected in coastal beach of Lombok. The seaweeds were cutted into small peaces, extracted with boiled water for 30 minute and filtered using filter whatman no.1 to get solid and liquid extract. Mixtured solid extracts were added in soil media. On the other hand, the mixtured liquid extracts were sprayed to rice plants during vegetative growth. The results shown that mixtured solid extracts increased growth and yield of rice plants. However, mixtured liquid extract did not stimulate growth and yield of rice plants. This suggests that brown algae is a potential raw material for development of organic fertilizers, which are adaptive to environment to support sustainable agriculture.
Application of crude natural enzymes for extraction of Wali seed [Brucea javanica (L) Merr]
Authors: Muliasari H , Ananto A D , Deccati R F , Almira D , Solahuddin
Published: April 2021

Bruce javanica (L) Merr is a medicinally important plant, commonly known as Wali. The extract of its seed has various secondary metabolites responsible for its pharmacological properties. Unfortunately, the recent method of extraction lacks in the percentage of the yield and has disadvantages to the environment. Enzymatic extraction of bioactive compounds is a potential alternative. In this research, we use some crude natural enzymes that are amylase, protease (bromelain), and cellulase isolated from corn kernels, pineapple fruit, and beef rumen fluid, respectively. The aim of this research was to determine the effectiveness of crude natural enzymes for the extraction of metabolite compounds in wali seed comparing with the solvent extraction method. For each of one gram of wali seed powder was extracted by using ultrasonic-assisted extraction (UAE) method with solvent of (1) methanol; (2) ethanol 96%; (3) bromelain; (4) amylase; (5) cellulase; (6) bromelain+amylase; (7) bromelain+cellulase; (8) amylase+cellulase; (9) amylase+bromelain+cellulase. The extracts of (1) and (2) were then evaporated; while extracts of (3) to (9) were freeze-dried. The appearance of extracts (1) and (2) were bright-yellow viscous liquid; while extracts (3) to (9) were solid-milky powder. Cellulase increases the extraction yield up to 40% and 22% in comparison with methanol and ethanol, respectively. The semiquantitative analysis showed that methanol extracts the metabolites with the highest concentration but has the lowest amount of yield extract. However, cellulase showed the highest ability to extract metabolites tested. The flavonoid content extracted using cellulase enzymes resulted in an increase of 273% and 170% in comparison with methanol and ethanol, respectively. Thus, the use of crude cellulase enzyme isolated from beef rumen fluid is the best choice to extract wali seed among other enzymes and solvents used.
The physical and chemical properties of VCO emulsion with citrus extract
Authors: Wiyani L , Aladin A , Rahmawati  , Mustafiah and
Published: April 2021

Virgin Coconut Oil (VCO) is one of the oils that has many benefits. But most consumers do not like to consume it directly because of the oily taste. Therefore, one alternative to reduce its oily taste is by formulating VCO in the form of an emulsion. This study was aimed to determine the effect of VCO and citrus extract ratio on the properties of VCO emulsion using natural emulsifiers. The emulsions were prepared with a ratio of VCO and citrus extract of 9: 1, 8: 2, 7: 3, 6:4, 5:5, 4:6, 3:7, 2:8 and 1:9, respectively. Three types of emulsifiers were used, namely Arabic gum, xanthan gum and soy lecithin with each concentration of 0.75 percent. The stability and viscosity of the emulsions were evaluated. The results of this study show that the use of the three emulsifiers resulted in different viscosities and stability. The emulsion using Arabic gum was the most stable at VCO: citrus extract ratio (9:1) with a viscosity of 230 cP. The emulsion with xanthan gum at VCO: citrus extract ratio (1:9) was stable with a viscosity of 1066 cP. However, the emulsion using soy lecithin was unstable. The contents of the peroxide number were 0.8-0.9 meq/kg sample. This stable emulsion can be used for future research to produce VCO emulsion which is good for consumption.
Community-based spring conservation in Catchment area of Kemalik Lingsar, Lombok, Indonesia
Authors: Jupri Ahmad
Published: April 2021

Water is the main and irreplaceable need for living things, both plants, animals and humans. Springs are one of the important elements, especially in the dry season, for the survival of living things, especially humans. The availability of water can play a role in many aspects including being able to function as drinking water, bathing, latrines (MCK), washing, plantations and livestock, irrigation of agricultural land, the need to purify oneself (as a support for the implementation of worship), and the economy. Conservation of springs through programmed reforestation activities in spring water catchment areas such as those carried out by the community and the NTB government requires precise references, so it is necessary to study the relationship or role between vegetation, soil (land) and climate in the conservation of spring sources. This research was conducted in Lingsar village, Lingsar District with quantitative research methods, namely observing vegetation directly in the field in the Kemalik Lingsar spring catchment area. Field data were then analyzed to determine the stratification, diversity, structure and composition of vegetation in the study area. The structure and composition of vegetation is carried out by calculating the density, frequency, dominance and importance of each species. Based on the research results it can be concluded that the number of tree species found in Kemalik is 14 species. Mangosteen is the dominant species with an IVI value of 104% and a density of 125 ph / ha. Utilization of land in the Kemaliq spring is mangosteen-based agroforestry which has been carried out for a long time, which can be seen from the old mangosteen trees which are planted at regular intervals and arrangements and are maintained (the community has long contributed to efforts to conserve soil and water). Underplants found in Kemalik were 16 species of herbaceous, 13 species of shrubs and saplings
Sea Surface Temperature (SST) analysis during ElNiño-LaNiña in the Java Sea
Authors: Haryanto Yosafat D , Riama Nelly F , Agdialta Rezfiko , Hartoko Agus
Published: April 2021

El Niño-La Niña effected climate conditions in Indonesia. The purpose of this study was to analyze the SST during El Niño-La Niña. The data used is the ENSO index SST Niño 3.4 anomaly in 1986-2017 and also SST data in the year of the El Niño-La Niña event with weak, moderate, and strong. It found that SST tended to be higher during El Niño than its normal average in the Java Sea by 29°C, while the normal SST is 28.94°C. La Niña SST in the Java Sea has an average of 29.06°C which is 0,6°C warmer than its normal average temperature. It can be concluded that El Niño-La Niña conditions do not greatly affect SST in the Java Sea. SST tends to be warmer during El Niño-La Niña than its normal average in the Java Sea. The average of SST is lower/cooler at 109.5-110.5° East Longitude than that of at the other longitudes. This is due to the mixing current of the cold water mass flow from the South China Sea with the mass of water from the Makassar Strait, each of which carries nutrients.
Strategy for shipyard industrial waste management in controlling water and air pollution in ship repair
Authors: Ashari Rachmat , Soesilo Tri E.B , Herdiansyah Herdis
Published: April 2021

This study aims to determine environmental conditions, environmental management, environmental management strategies of PT. X in controlling environmental pollution. This research was conducted at PT.X Cilegon Banten shipyard in marine ship repair activities. This research uses a quantitative approach with cross-sectional. The research method in analyzing this research is a mixed method with survey methods and laboratory analysis. Manage strategies using questionnaires and interviews. Environmental quality data analysis uses predetermined quality standards and management strategies use SWOT analysis (Strength, Weakness, Opportunity and Threat). The results of environmental quality research of PT. X show the status of the environment that is heavily polluted to meet quality standards. The concentrations of heavy metals, namely Pb, Zn and Cu have exceeded the standard of quality at 3 stations and analysis of the quality of dust in the air in the shipyard area and around the shipyard occurs air pollution caused by the use of silica sand in the sandbalsting process. Evaluation of the company’s commitment in managing the work environment based on knowledge and attitudes is considered good by employees towards environmental management. The strategy carried out in environmental management at PT.X which was produced by researchers using the SWOT method, namely by increasing guidance and coordination in environmental management by forming an environmental division to reduce the impact of ship repair activities at the PT.X.
Mapping out the municipal solid waste generation and collection model using spatial multi-criteria evaluation
Authors: Amri Saiful , Martono Dwi N , Supriatna  , Soesilo Tri E B
Published: April 2021

As of 2017, only 47% of Sukmajaya Sub-district’s waste was collected and transported. The City of Depok targeted to improve this rate to 73% by 2020. This research aims to evaluate the waste collection system in Sukmajaya Sub-district. Data were collected from government agencies, interviews, and field surveys. Data analysis was conducted using Spatial Multi-Criteria Evaluation (SMCE). Results showed that waste generation in Sukmajaya Sub-district was divided into three categories based on its quantity: three villages generated more than 150 m3 waste/day, two villages generated 50-100 m3 waste/day, and one village generated lower than 50 m3 waste/day. Sukmajaya Sub-district had three types of residential waste collection models: indirect individual physical Waste Collection Point (WCP), indirect individual non-physical WCP, and direct individual door to door. Evaluation revealed four out of six existing physical WCP facilities were suitable in terms of spatial and physical conditions and posed low threat to pollute the surrounding environment.
Innovation for the development of environmentally friendly oil palm plantation in Indonesia
Authors: Syahza Almasdi , Robin  , Suwondo  , Hosobuchi Michiko
Published: April 2021

Oil palm is a very common commodity in rural communities of Sumatra and Kalimantan, Indonesia, and the farming activities in these areas create a high multiplier effect and increase welfare. However, the expansion of oil palm areas puts pressure on forests and resources. The research was carried out through a survey using the developmental research method. Efforts to implement sustainable development in the plantation sector need to be carried out to develop palm in the second cycle. One of the efforts is to implement agroforestry by planting forestry plants between oil palm trees, namely meranti trees (Shorea leprosula Miq). The model for the development of meranti is a monoculture palm plantation that is integrated with meranti trees. This has ecological, economic, and social benefits, following the basic concepts of environmental management. Planting copper meranti between palm trees has multiple benefits for the community, such as wood production. Planting copper meranti between oil palm trees has multiple benefits for the community, timber production as additional income for farmer families.
Low carbon energy model in West Papua
Authors: Wehantouw Frenly , Karuniasa Mahawan , Wurarah Rully N , Tuharea Abdullah , Maharani Cynthia , Shalilah Himayatus , Agung Pambudi Priyaji
Published: April 2021

West Papua is one of the Indonesian remaining forest frontiers expected to contribute greatly to countries’ climate commitments. Although fast economic growth in West Papua may results in high emission to the environment, especially in the energy sector. This study aimed to simulate the Gross Regional Domestic Product (GRDP) linked to Emission variables and integrate climate-smart development. The dynamic system model will integrate the influencing factors such as GRDP, capital, investment, and emission in West Papua. The modeling stage comprises of concept drafting, modeling, model simulation, and validation process. Powersim 10 is used to run the model. A causal loop diagram of the initial model scenario is formed of one variable is positive (reinforcing). Modeling results has been declared valid by the AME value of 4,96%. The implementation of NDC 41% in the economic sector will cut GRDP to approximately a half than business as usual GRDP. Based on the initial scenario, the model simulations indicate that the CO2 emission along the simulation period is defined to the year 2030, about 14,397,034,50 tonCO2/year on average. After the structural intervention is conducted, the CO2 emission decrease up to 25,6%, reducing emission according to NDC, 41% will correct the economy.
Profiling the implementation of rainwater harvesting in Bekasi, Indonesia
Authors: Marcos Kelvin J , Moersidik Setyo S , Soesilo Tri E B
Published: April 2021

This research was raised based on water resource problems, which are currently becoming a global obstacle to overcome. Population growth impacted the demand for water resources, changed the hydrological cycle pattern in an area, and worsened with climate change, impacting season disaster. This research was conducted to see the profile of Bekasi City on rainwater harvesting so that the results of this study are expected to provide a big picture in the context of applying rainwater harvesting. Rainfall analysis uses dependable rainfall to cut down rainfall uncertainty and grant opportunities for a higher harvestable rainfall volume. Besides, a community approach was carried out to observe society’s water use patterns and their behavior towards rainwater harvesting. This study found that the volume of water demand in Bekasi varied in each District, which is 3.57-7.08 m3/person/month, and harvested rainwater can cover up 2.27%-12.73% of their needs during the wet season (December-April). The community has collected their rainwater at their homes by 49%. A comprehensive approach should have taken to attract people to harvest rainwater.
Line source dispersion and spatial distribution of carbon monoxide concentration on Daan Mogot Street, Tangerang City, Jabodetabek Metropolitan Area
Authors: Erawan Muhardiyan , Karuniasa Mahawan , Kusnoputranto Haryoto
Published: April 2021

Air pollution is the most common problem in urban areas. Emissions from transport are hypothesized to be the main cause of this pollution. Therefore, studies on air pollution on a local scale must be carried out, especially on pollutants related to emissions from transportation, carbon monoxide. This study aims to provide an up-to-date study regarding the specific conditions of Carbon Monoxide concentration in the Daan Mogot Street area. This research uses the Gaussian Line Source and Geographic Information System (GIS) methods. This research shows that carbon monoxide concentrations around Daan Mogot Street ranged from 195.56-1482.50 μg/m3. This research findings are expected to anticipate the increase in the concentration of carbon monoxide in the research area, affecting the sustainability of people around the research area.
Management of increasing economic value of organic waste with Maggot cultivation
Authors: Handayani Dwini , Naldi Ari , Larasati Raden R N P , Khaerunnisa Nada , Budiatmaka Denis D
Published: April 2021

Organic waste can have economic value, such as used for animal feed, fish, and fertilizer. Organic waste from human activities needs to be deciphered before it becomes an economically valuable product. Maggots (BSF flies) are larvae that can convert organic material into biomass and potentially break down organic waste. Garbage has become a problem in Jambi due to population growth, changes in consumption patterns, and people’s lifestyles, producing 1,600 m3 of waste per day. By utilizing maggot cultivation (BSF), community services activities can enhance the economic value of organic waste in Purwodadi Village, Tanjung Jabung Barat Regency, Jambi. This article aims to study organic waste management using maggot cultivation. The result is that this method can be an alternative for organic waste management. This method embarks a sustainable environment and increases resources which can be traded or utilized. Maggot bioconversion technology can deal with three main problems, namely: the generation of organic waste, high prices of protein sources, and increasing demand for animal feed. In conclusion, organic waste management using maggot cultivation brings a sustainable environment and enhances organic waste’s economic value. Therefore, it can be a useful alternative for waste management.
Health And safety risk mapping in workers of micro, small, and medium enterprises in Sukahati Village, Citeureup Sub-district, West Java
Authors: Wirawan Mufti , Yogiswara Adrian B , Hanif Aldrian , Yemix Algavusada F , Yasmin Amanda S , Astuti  , Seik Brian O , Putri Diniyah I F , Sihombing Mahannie T , Ghifari Muhamad N , Adani Nadhila , Fatimah Rizqi , Habibah Salma P , Sarah
Published: April 2021

Informal sectors, especially Micro, Small and Medium Enterprises (MSME) plays a significant role in the national economy’s development and employment but lack of Health and Safety concerns regarding their works. This study aims to increase the informal sector’s awareness towards occupational health and safety aspects by conducting occupational health and safety (OHS) risk mapping through an integrated platform in Sukahati Village, Citeureup, West Java. One of this study’s outcomes is to create an integrated online database platform that contains occupational health and safety data from the sampled MSMEs called SiUMKM. This study was conducted with samples of MSMEs across Sukahati Village using questionnaire-based interviews. The highest proportion of work accidents within the population includes punctures, cuts, and scratches. In contrast, the highest occurring health issues in MSMEs in Sukahati are waist pain, back pain, and muscle stiffness. Many of the existing health issues cause are manual handling tasks and inadequate workstation arrangements (up to 91% contribution). In conclusion, the OHS problems surrounding MSMEs mainly resulted from the low comprehension of OHS in the workplace. Therefore, an integrated platform like SiUMKM can be a solution for comprehensive information regarding the health and safety aspects of MSMEs work environment.
Study on forecasting methane content in coal seams of Nga Hai mine area
Authors: Nguyen Van Thinh , Nhung Pham Thi
Published: April 2021

Nga Hai coal mine area has large reserves managed by Quang Hanh Coal Company of Vietnam Mineral Industry Group. In this coal mine, there are 15 coal seams with industrial reserves. Each coal seam contains methane and the deeper it goes down the methane content tends to increase. Nga Hai coal mine is exploiting at-175 level and tends to exploit to-300 level. Currently, the mine is ranked III in terms of methane content in coal seams, while the coal mine is ranked III, which means it is hazardous in terms of the risk of methane fire and explosion. At the time of the methane explosion, Khe Cham coal mine was ranked III for methane. Thus, at present, the Nga Hai coal mine must have strict methane control measures to prevent methane gas fire and explosion like the former Khe Cham coal mine. To have effective methane control options, author took coal samples at the Nga Hai coal mine’s coal seams and analyzed to determine the methane content at different levels. Then author treated data analysis and interpolation methods, the least-squares method to predict methane concentrations at deep levels that cannot be sampled for analysis. With the Forecast of methane content in coal seams, author will provide the mine management company to take proactive measures to avoid the risk of methane gas explosion and take the initiative in mining plans safest and most effective waterfall.
Study formulate a reasonable working mode of the main fans in Nam Mau coal mine, Uongbi-QuangNinh
Authors: Nguyen Van Thinh , Quang Nguyen Van
Published: April 2021

The ventilation for underground coal mines and to the general underground mining work is indispensable. For pit coal mines in Quang Ninh is usually done by the main fans is located on the ground. Today, Nam Mau coal mines use three main fan stations operating in parallel to ventilate the mine. This fan has three stations of different capacities but is interconnected via the mine pits. Thus, during the operation occurred between three mutual “bracing” winds fan stations causing decreased fan performance and not satisfying my ventilation requirements. This paper analyzed, calculated, and determined each fan’s operating mode and reasonable fans when operating in parallel to improve fans’ performance and improve the efficiency ventilation for Nam Mau coal mine.
Barriers to implementing environmental management system in Indonesian Higher Education Institutions: A systematic review
Authors: Putrantomo Robertus I. , Soesilo Tri E.B , Hamzah Udi S.
Published: April 2021

Sustainability of the environment is affected by various organizations’ environmental performances, such as Higher Education Institutions (HEI). The HEI’s environmental performances are divided into different categories, such as energy, water, waste, mobile sources, paper, food, and built-up area. Implementation of Environmental Management System (EMS), such as ISO 14001:2015 has been acknowledged to improve HEI’s environmental performances. Despite that fact, only a few HEI that implemented ISO 14001:2015 for their EMS in Indonesia. This article analyzes potential barriers to implementing EMS in Indonesian HEI based on a systematic literature review and in-depth interviews at the case university. There are 25 potential barriers found, analyzed, and then summarized. Five main potential barriers are identified: (1) lack of commitment from the management of the stakeholders; (2) lack of financial resources; (3) lack of expertise on EMS; (4) organizational; (5) lack of engagement from student, staff, and faculty. The study’s results can be used as additional consideration for HEI to overcome barriers in implementing EMS.
The influence of cigarette consumption as a trigger of relapse tendency in productive drug abusers
Authors: Indradewiand Regina N , Samputra Palupi L
Published: April 2021

One of the effects of globalization in Indonesia is the increase in drug abusers. In the last 3 years, there has been an increase in drug abusers and tobacco consumption in the productive age group. At the Drug Rehabilitation Centre, National Narcotics Boards in 2015 until 2018, there was an increase in abusers to relapse from 5% to 6.3%. This study aims to analyze the influence of smoking behaviors on the tendency of relapse and to compare smoking and non-smoking on the decline in drugs abusers in the Rehabilitation Center. This research uses a quantitative approach. The sample of this research is 162 respondents who were drug abusers undergoing rehabilitation. A questionnaire collected data. Factor analysis is used to process the data of the independent variables. Coping was the most dominant factor in relapse tendencies. Results indicate that smoking behavior can reduce the tendency of relapse in drug abusers in the Drug Rehabilitation Center. We recommend conducting further research on what kind of coping is suitable for drug abusers to reduce the tendency to relapse and review the smoking cessation policy at the Drug Rehabilitation Center. Another suggestion is to taper the dose of cigarette use on drug abusers.
Environmental awareness at senior high school in Jakarta
Authors: Adriyanto Yosi N , Martono Dwi N , Soesilo Tri E B , Nadiroh
Published: April 2021

The relationship between humans and nature tends to exploit nature or the environment on a large scale. Cultivating awareness that cannot be separated from the world of education must be ensured at the beginning of schooling regarding improving perceptions of things that affect them. The emergence of environmental awareness is based on environmental ethics, which states that environmental awareness consists of environmental behavior, perceptions, and attitudes. This research was conducted to answer how students, exceptionally high school students possess environmental awareness and aimed to analyze environmental awareness that has been applied mainly at the high school level. The research was conducted by giving questionnaires to 353 students from two Adiwiyata recipient schools in DKI Jakarta. Analytical descriptive is used to analyze the results of this research. The results show that the respondents have adequate knowledge and attitudes but have good environmentally friendly behavior. The descriptive-analytical results obtained indicate that excellent results are obtained for the knowledge aspect. Good results are obtained for the attitude aspect, but the results are sufficient for the behavioral part. The impact of this research can be used as a benchmark for evaluating the Adiwiyata program related to environmental sustainability awareness.
Environmental knowledge and behavior of employees in office building
Authors: Supangkat Sudiatmoko , Martono Dwi Nowo , Herdiansyah Herdis
Published: April 2021

The environmental problem faced by the world nowadays is getting worse. If this condition continues to occur, then the industrial and service sector will not last long. One of the factors which can succeed in the company environmental program is environmental care behavior. It needs knowledge related to the environment to have the ability to act following the environmental principles and can succeed in the implementation of an EMS system. Therefore, this research aims to analyze the correlation between employee’s environmental knowledge and environmental care behavior. This research used a quantitative approach and conducted at one of the logistics companies. Data collection was conducted through a questionnaire. Then, research data analysis was conducted through correlation and regression analysis using SPSS software. The basis of deciding on hypothesis acceptance was based on the significance value (p) based on the reliability level 95%. The research results show a correlation between employees’ knowledge and environmental care behavior with p-value ≤ 0,05, namely 0,000. Then, the result of the determination coefficient is based on, namely, in the amount of R2 = 0,359, which means the employee’s knowledge variable can explain the change of environmental care behavior in the amount of 35,9%.
Reinventarization of living procedures, local knowledge, and wisdom to environment (Study case on Tobelo Tribe-Halmahera)
Authors: Asteria Donna , Brotosusilo Agus , Soedrajad M R , Nugraha F N
Published: April 2021

Indonesia is a comprehensive and vast country with a lot of people inside of it. Diversity, or often referred to as cultural diversity, is a necessity in Indonesia. With a population of more than 250 million people spread throughout the archipelago in Indonesia. They inhabit areas with diverse geographical conditions but with the same climate. Every culture has social resources that support growth, such as traditional knowledge, wisdom, and ethics for the environment. This paper aims to review and evaluated the Tobelo tribe wisdom to the environment to utilize the qualitative method. Tobelo tribe acquire knowledge about the forest patterns in the forest to survive and avoid consumptive activities and modern lifestyles through their nomadic life. Forest are crucial for them cause forest is part of them. Through their knowledge and wisdom is to establish a harmonious human-environment relationship. That is a national asset that crucial for biodiversity and preventing harm to biodiversity and the environment.
The effect of motivation for public participation in environmental management
Authors: Utari Andiny Widya , Asteria Donna , Nowo Martono Dwi
Published: April 2021

The increase of population in Indonesia resulted in population density becomes larger. It is one of the factors in the emergence of slum settlements, especially in urban areas. The existence of slums is related to poor environmental sanitation facilities. Environmental sanitation is one of the environmental managements. Environmental management efforts can be successful if the community is willing to participate. However, until now, the level of community participation, especially those living in slum areas, is still relatively low. One of the reasons is the lack of motivation in the community to carry out environmental management. Therefore, it is essential to know the factors that cause community motivation still at low level. This study aims to verify if motivation has impact to community participation in environmental management. The method is with literature study from articles that relevant to the topic. It results that motivation is an encouragement that supports participation. The dominant motivational factor is internal factors. In addition, the factors of knowledge, social, and economic are also influence the level of motivation.
Extended theory of planned behavior on utilizing domestic rainwater harvesting in Bekasi, West Java, Indonesia
Authors: Marcos Kelvin J , Moersidik Setyo S , Soesilo Tri E B
Published: April 2021

Sustainable water resources management is a challenge for the world, especially developing countries experiencing population growth, which triggers an increase in water demand. This condition harms the stability of water resources for humans and the ecosystem. Water conservation with rainwater harvesting is an adaptation and mitigation effort to these problems, but Indonesia’s application is still minim. This study scrutinizes rainwater harvesting by looking at literature review that had applied in various countries and discussed the advantages and challenges of these methods. Besides, to understand people’s behaviour intentions, this study uses self-evaluation as the data to be analyzed using an extended theory of planned behaviour model. This study indicates that rainwater harvesting can have a positive impact on water conservation, such as cut down surface water deterioration and mitigate seasonal disasters. These impacts can felt like a whole if those systems are implemented on a wide scale. On the other hand, the extended theory of planned behaviour model shows that 16.4% of the intention to utilize rainwater harvesting with the highest variable is the attitude variable. Recommended approaches for improving attitudes in rainwater harvesting are described in this paper.
The role of work engagement in the relationship of job autonomy and proactive work behavior for organizational sustainability
Authors: Permata Febrina D , Mangundjaya Wustari L
Published: April 2021

This study aims to examine the effect of job autonomy on proactive work behavior and to investigate the mediating role of work engagement in the relationship of job autonomy and proactive work behavior. This study involved 208 employees working in the private sector, public sectors, and government in Indonesia. Participants were taken using convenience sampling techniques through the distribution of questionnaires online. Data were analyzed using Structural Equation Model (SEM). This research shows that job autonomy directly influences work engagement and indirectly affects proactive work behavior through work engagement mediation. Our results found different results from previous studies, where job autonomy directly impacted proactive work behavior. Our results reveal the full mediation role of work engagement in the relationship between job autonomy and proactive work behavior.