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Articles 1,542 Documents
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Implementation of Lean Six Sigma in Improving Quality by Reducing Defective Products in Aqua Mineral Water Gallon Distribution Rusindiyanto; Isna Nugraha; Friska Aryanti
Nusantara Science and Technology Proceedings 5th International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4507

Abstract

Surya Galon Agent is one of the gallon agents in Sidoarjo. The gallon product that is in great demand is the AQUA gallon. The problem faced is the high number of defects. This research aims to identify the types of defects that cause high levels of weekly defects for one year, determine the factors that influence the quality of AQUA mineral water gallon products at Galon Surya Agent, analyze the main causes of each type of defect and provide suggestions for improvement using the Lean Six Sigma approach. The Lean Six Sigma method seeks to integrate Lean manufacturing principles with Six Sigma. From the total number of gallons of AQUA mineral water products totaling 5720 units, the number of damaged units was 220 units. From research that has been calculated, the DPMO result is 1282 with a sigma level of 3.73. These results show that quality control for AQUA gallon mineral water products still requires improvement to minimize the number of defects. Analysis of SQCDMPE (Safety, Quality, Cost, Delivery, Moral, Productivity, Environment) is Improved monitoring of raw materials; Reduction in defect rate from 3.73 sigma to 4.01 sigma, an increase of 0.28 sigma; Decrease in repair costs through quality control; Improvement in timely delivery of products to consumers, reducing customer complaints; Increased employee satisfaction and motivation through training programs and rewards; Increased productivity due to process improvements and more regular machine maintenance; Reduction in environmental impact through better waste management and use of more eco-friendly raw materials.
Analysis of the Relationship of Concrete Column Structural Elements to Steel Frame Beams Supporting Swimming Pool Loads in the East Coast Center II Phase 2 Surabaya Project Sumaidi; Wahyu Kartini; Rida Pribady
Nusantara Science and Technology Proceedings 5th International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4508

Abstract

The swimming pool is located on the top floor of the building with a large swimming pool making structural design pay attention to all aspects, especially safety aspects when used. The structural method used in this study is a combination of structures between concrete columns and Bailey model steel frame beams. The use of steel frame beams is because the swimming pool has an area of 27 m x 20,5 m and under the swimming pool there should be no columns to create a spacious room. In the combination of these structures, the relationship between concrete columns and steel frame beams (JCB) is connected using anchors as a component that transfers loads. The anchor used is an L-shaped anchor model. The anchor is connected at four end points of the steel frame beam which helps transfer the load to the concrete column. From the results of the analysis with ETABS software, the largest value of the axial force (Fz) is 5525113,22 N and the shear force (Fx) is 6438725 N. According to SNI 2847: 2019, the anchor needed to reduce the axial force and shear force is used 52 36 mm diameter anchors with a shear capacity value of 6496089,6 N and an axial capacity value of 12492480 N.
The Potential of Mixed Tea from Mangosteen Pericarp, Clove, And Cinnamon in The Functional Scope of Creating a Healthy Liver Organ Yunita Satya Pratiwi; Yusinta Aristina Sanjaya; Rosida; Ratna Yulistiani; Ulya Sarofa; Anggun Pratiwi Rohimatul Inziyah; Nadien Mutia Intan Maulidi; Ufairah Fithriyati
Nusantara Science and Technology Proceedings 5th International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4509

Abstract

The liver, which is the largest organ in the intestinal tract can do several very complex jobs. The use of herbal teas that utilize plants with high antioxidant content is one strategy that is starting to attract interest. In tea form, a blend of mangosteen pericarp, cloves, and cinnamon can protect the liver from oxidative damage and inflammation. The purpose of this article is to explore, analyze, and summarize various theories about the potential of a mixture of mangosteen, cinnamon, and clove tea, hepatoprotective mechanisms, and liver health biomarkers in terms of antioxidant content. The writing method used is a literature review from international and national journals by tracing and summarizing several theories related to the topic and title of the article to be written, which ultimately develops new conclusions as broader and stronger theories. The results show that mangosteen peel, cloves and cinnamon have functional benefits, namely they can create a healthy liver because of their antioxidant content. Mangosteen peel contains quite high polyphenol antioxidants, including xanthones, phenolic acids, flavonoids, catechins, hexadecanoic acid, and oleic acid. Cloves contain the antioxidants eugenol, saponins, tannins, flavonoids, and polyphenols. Cinnamon contains phenolic antioxidants such as eugenol, cinamic aldehyde and beta caryo-phyllene Damage to cell membranes and proteins is a sign of oxidative stress caused by free radicals. Therefore, antioxidants are needed to convert free radicals into non-reactive compounds. Biomarkers of a healthy or damaged liver are through blood tests including levels of SGPT, SGOT, SGPT-SGOT, Gamma GT, albumin and globulin levels, bile acid levels, and bilirubin levels. In conclusion, tea mixed with mangosteen peel, cloves, and cinnamon contains high levels of antioxidants so it has the potential to protect against liver damage due to various oxidative stress factors.
Establishing Pollution Levels and Monitoring Air Quality in Eastern Indonesian Mining Areas Nur Aini Fauziyah; Billy Sopater Maniani; Reffany Choiru Rizkiarna; Fajar Timur; Arum Sinda Santika
Nusantara Science and Technology Proceedings 5th International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4510

Abstract

This study aims to measure pollution levels and track the state of the air in Eastern Indonesia's major mining districts. Eastern Indonesia's mining in-dustry has significantly boosted the local economy in the area. But this also brings up environmental issues, particularly with relation to pollution and air quality. The level of sulfur dioxide (SO2), nitrogen dioxide (NO2), and other pollutants is measured using the EPM-Manual 42iQ Continuous Air Quality monitoring tool in this air quality inspection method. Our research reveals higher than expected pollution levels around mining activities, sur-passing both national and international air quality regulations. The study also shows that pollution concentrations vary seasonally, with higher levels during the dry season. Furthermore, health risk assessments show possible negative effects on locals.
Classification of Disaster Risk Areas on Mount Ruang Using Vegetation Index Calculations and Landsat-8 Satellite Imagery Siti Zainab; M. Abhiel Laits Qatadah; Fithri Estikhamah; Minarni Nur Trilita
Nusantara Science and Technology Proceedings 5th International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4511

Abstract

Mount Ruang is located in Tagulandang District, Siau Tagulandang Biaro Islands Regency, North Sulawesi, with an elevation of 725 meters or 2,379 feet, at coordinates 2°18' N / 125°22' E. In April 2024, a significant eruption was re-recorded. Ruang Island is the peak of the volcano rising from the Sulawesi Sea. Most of its inhabitants are farmers, and land use in an area is influenced by population growth and activities. The eruption of Mount Ruang has caused changes in land function. In this study, classification was conducted using the Normalized Difference Vegetation Index (NDVI) and Soil Adjusted Vegetation Index (SAVI). The data were sourced from Landsat 8 imagery from 2022 to 2024, specifically bands 4 and 5. The results of this study conclude that from 2022 to 2024, the vegetation index calculations were very significant. Classification calculations before and after the eruption showed that the NDVI vegetation index in 2022 and 2023 indicated vegetated land, while in 2024, it indicated non-vegetated land. The SAVI vegetation index identified water bodies such as rivers or seas. It can be concluded that post-eruption, the land around the volcano was non-vegetated and much of the material fell into the sea.
Opportunity Cost Analysis Sugarcane Cultivation in East Java – Indonesia M Samsul Arifien; Teguh Soedarto; Hamidah Hendrarini; Eko Nurhadi
Nusantara Science and Technology Proceedings Multi-Conference Proceeding Series F
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4601

Abstract

The opportunity cost for sugar cane farmers is the choice of cultivating sugar cane as a farming activity to support their livelihoods. Farming of other crops is not chosen, rejected, sacrificed. as opportunity costs. Farmers choose sugar cane as a commodity without choosing alternative crops that can be cultivated in the same location. Alternative crops are rice and corn, which can be competitors considering profits. To find out how much opportunity costs or sacrifices are made by sugar cane farmers, this research was carried out. The research method used is quantitative by calculating the income of sugar cane farmers and the income of rice and corn farming. The research was carried out in 4 districts of Sidorjo, Tulungagung, Ngawi, Situbodo, with a sample size of 120 respondents. The results of the research show that the Opportunity Cost value for sugar cane farmers in East Java is IDR 31,618,062 if the farmers plant rice and corn. Sugarcane farming is less profitable because it earns lower income, namely IDR 25,993,750,00.
Molecular Docking Analysis of Zerumbone Derivatives as XIAP-BIR3 Inhibitor for Anticancer Agent Winni Nur Auli; Nisa Yulianti Suprahman; Riri Fauziyya; Sarmoko; Arif Ashari; Safia Fazila; Qurrota A`yun Azzahrah; Romualdo Pasaribu; Putri Liswatini; Ihza Adzkiya Mubarak Al-Husni; Dinda Naila Dhiya Salsabila
Nusantara Science and Technology Proceedings Multi-Conference Proceeding Series F
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4602

Abstract

Cancer is the second most common cause of death worldwide. Common therapies used to treat cancer include radiation, chemotherapy, and surgery. However, resistance to treatment often gives a challenging problem, and new alternative therapies derived from natural compounds are needed. Zerumbone is terpenoid compound with various biological activities, including anti-tumor and anti-cancer. This study aims to investigate the activity of Zerumbone and its derivatives against the XIAP-BIR3 protein. The target protein used PDB ID: 4KMP as inhibitor of XIAP-BIR3. There are 21 zerumbon derivatives retrieved from published article. Docking of zerumbone derivatives was performed using Autodock 1.5.6. Molecular docking result showed derivative 6 of Zerumbone has potential as an anti-cancer agent with a binding energy of -7.84 kcal/mol; meanwhile, the reference inhibitor has a binding energy of -5.21 kcal/mol. These results of the study indicate that the development of inhibitor XIAP-BIR3 may be a potential strategy in cancer treatment and zerumbone derivatives are predicted to be potential candidates that can be analyzed further.
The Economic Determinants of Foreign Exchange Reserve Fluctuations in Indonesia Dea Rustami; Septriani Septriani
Nusantara Science and Technology Proceedings Multi-Conference Proceeding Series F
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4603

Abstract

This research examines the economic factors that drive fluctuations in Indonesia’s foreign exchange reserves, concentrating on external debt, global trade activities (exports and imports), and the exchange rate of the Rupiah against the US Dollar. By utilizing secondary data obtained from the World Bank, the research applies multiple linear regression analysis through EViews 12 to assess the influence of these critical variables on foreign exchange reserves. The findings reveal a significant correlation between external debt, exports, and imports with changes in foreign exchange reserves, whereas the exchange rate shows no notable influence. The regression model accounts for 95.81% of the variation in Indonesia’s foreign exchange reserves, underscoring external debt, exports, and imports as pivotal factors, while the exchange rate plays a relatively minor role. These insights are crucial for policymakers aiming to ensure economic stability.
Hypolipidemic effect of black rice (Oryza sativa L. indica) on HDL level in C57BL/6 (Mus musculus) mice with diabetes Elmo Krisnawan; Yanuarita Tursinawati; Afiana Rohmani
Nusantara Science and Technology Proceedings The 4th International Conference on Community Medicine and Medical Sciences
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4410

Abstract

Type 2 diabetes mellitus (T2DM) patients show insulin resistance which can increase lipolysis. This condition increases low-density lipoprotein (LDL) and a decrease in high-density lipoprotein (HDL). Black rice contains anthocyanin, amylose, and fiber, which are important to manage cholesterol levels, including HD. This research aims to investigate the hypolipidemic effect of black rice on HDL-level mice with T2DM. This experimental research involved 32 male mice which were divided into four groups, KN with four grams of standard feed per day; K(-) with four grams of standard feed per day; P(1) with 1.68 grams of cooked black rice, 2.32 grams of standard feed per day; P(2) with 3.36 gram of cooked black rice, 0.64 grams of standard feed per day. K(-), P(1), and P(2) were injected with streptozotocin (STZ)-nicotinamide (NA) once. The intervention was done in 28 days. The HDL level was measured pre and post-intervention. Paired t-test and ANOVA were used to analyze with p<0.05 as significant. There was a significant difference in HDL pre and post-test in the KN (p=0.002), K(-) (p=0.002), P(1) (p=0.000), and P(2) (p=0.000). A significant difference in HDL levels was found among groups before the intervention (p=0.026), after the intervention (p=0.000), and the difference in HDL level (p=0.000). The largest change in HDL levels was found at P(2) with an increase of 18.88 mg/dl. Giving black rice, 3.36 grams of black rice, and 0.64 grams of standard feed has a greater effect on changes in HDL in T2DM mice. Black rice can be a promising functional food for the alternative treatment of diabetes in later life at certain doses. Further research is needed to measure phytochemical content by adding variations in black rice substitution and treatment duration.
The Relationship Between the Use of Gadgets During the Covid-19 Pandemic on Personal Social and Language Development in Children Aged 4-6 Years Zahwa Octri Muslimah; Agus Saptanto; Kanti Ratnaningrum
Nusantara Science and Technology Proceedings The 4th International Conference on Community Medicine and Medical Sciences
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4411

Abstract

The use of gadgets during the COVID-19 pandemic has increased in children aged 4-6 years. Excessive use of gadgets causes addiction, especially with access to harmful content, such as violent scenes that children see in games and content in applications that are believed to affect children's social and language skills. It is known that the early age is a conducive period for developing various aspects of important skills in children such as personal social abilities, intelligence, talents, physical abilities, language, socio-emotional, and spiritual quotient. However, the increased use of gadgets is known to affect children's personal, social, and language development. This study used a qualitative approach using phenomenological methods. This research aims to determine and analyze the relationship between gadget use during the COVID-19 pandemic and personal social and language development in children aged 4-6. In the personal social aspect, there was a negative development where children could not help themselves and self-manage, interact less with their surroundings, and became less responsive. There was also a negative development in language where children became less likely to communicate, were influenced by foul language, and could not express their ideas. Interestingly, these children were able to absorb new vocabulary in foreign languages more quickly and were full of knowledge with a positive imagination. We discovered that an increasing duration of gadget use leads to negative manifestations in the personal and social development of children. However, there was also a positive aspect of gadget use especially regarding creativity and imagination. Therefore, it is necessary to control, supervise, and utilize applications on gadgets to optimize the development of both the language and personal social of children who are excessively exposed to gadgets.

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