Applied Research in Science and Technology最新文献

{"title":"Land use change analysis using NDVI approachment in Terbanggi Besar, Central Lampung at 2000 and 2020","authors":"Redhika Pangestu, Nikhen Santika, W. S. Ramadhani, A. Rahmat, A. Mutolib, S. Nurhaji","doi":"10.33292/areste.v1i1.7","DOIUrl":"https://doi.org/10.33292/areste.v1i1.7","url":null,"abstract":"Terbanggi Besar is one of the Subdistricts in Central Lampung Regency, which has an area of 217.15 km2. The large area of land is used as a settlement and also used to cultivate crops. Each year, the population in this Subdistrict keeps increasing; this becomes a problem since the increasing population means the need for the living area also increases. This affects is the cultivation area by turning it into a residential area. The research aims to analyze land use changes based on vegetation density in the Terbanggi Besar sub-Subdistrict in 2000 and 2020. The data from the respective Landsat 7 and 8 satellite images using multi-temporal dimensions using Geographical Information Systems (GIS) through the Argis application and Landsat imagery with the NDVI method. The results indicate that land use dynamics in the Terbanggi Besar Subdistrict have fluctuated in the last 20 years. The largest land use in Terbanggi Besar Subdistrict in the period 2000 to 2020 is medium density vegetation with an area of 21,465 hectares, low-density vegetation 17,453 hectares, and open land 2,624 hectares.","PeriodicalId":237717,"journal":{"name":"Applied Research in Science and Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115343139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of wastes height reduction, macrobiology and microbiology colony (fecal coli) on dry leaves composting process","authors":"F. M. Iresha, Cendekia Ilham Maulana, Kasam Kasam, A. Rahmat, M. Zaki","doi":"10.33292/areste.v1i1.6","DOIUrl":"https://doi.org/10.33292/areste.v1i1.6","url":null,"abstract":"The scattered leaf wastes can be turned into high nutrition organic fertilizer by utilizing vermicomposting methods.  The wastes will be consumed by earthworms reducing the mass of the waste and the excrement can be used as vermicompost. One of the important things regarding the potential of earthworms in vermicomposting is the consumption rate or the decrease in the waste pile heights. Also, the number of microorganism colonies can be determined using the MPN (Most Probable Number) method based on the parameters of fecal coli bacteria in SNI 19-7030-2004.  The vermicompost produced in this study comes from banyan leaves (Ficus benjamina) and bamboo leaves (Bambusa bambos). It takes 56 days for the vermicompost to ripen.  The decrease in pile heights was measured every three days using a ruler and resulted in an average reduction of 2.18 cm/day for Ficus benjamina leaves and 1.0 cm/day for Bambusa bamboos leaves. Samples of microorganisms were taken on the 28th and 56th day and the MPN value was calculated. The MPN value obtained on the 28th day was 290 MPN/g and on the 56th day was 460 MPN/g, indicating that the colony had reached the predetermined quality standard.","PeriodicalId":237717,"journal":{"name":"Applied Research in Science and Technology","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115440004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toxic elements and microbial loads in african giant land snail (Archachatina margenata) reared with waste contaminated soil","authors":"O. C. Egwu, Umezinwa Ogochukwu Jennifer, Adinnu Chiamaka Maria Goretti, Okeke Uchechukwu, Ejiofor Uchechukwu Marksydney","doi":"10.33292/areste.v1i1.5","DOIUrl":"https://doi.org/10.33292/areste.v1i1.5","url":null,"abstract":"The use of dump soils for the rearing of African giant land snail (AGLS) leads to the bioaccumulation of metals and microbial loads in AGLS, which is a major food chain route for the human body. This study investigated the concentrations of heavy metals (As, Cd, Cr, Hg, and Pb) and microbial load in AGLS reared with dumpsite and control soil and also to ascertain if they are within permissible limits. Soil samples; dump soil (A), and Control soil (B) were collected at 0-30 cm depth with the aid of a soil auger and were used for AGLS farming, to ascertain whether the Toxic elements (TEs) concentration was within the permissible limits on AGLS consumption. A total of 18 juvenile snails of similar weights was used for the study. The experiment lasted for three months (90 days), during which the snails were subjected to similar dietary reign and equal quantity of feed. The soil samples were analyzed for TEs before and after farming, and a snail was also analyzed for TEs after farming using an atomic absorptions spectrophotometer (AAS). Standard methods of APHA were used to determine microbial loads such as Total heterotrophic bacteria, E. coli, total coliform, fecal coliform, Staphylococcus aureus, Salmonella, and intestinal parasites. Results indicated that bacterial counts recorded in this study exceeded the recommended levels by WHO and ICMSF, standards (i.e. 10 to 102 coliforms g-1, 10 fecal coliform g-1, and 4.9×106 aerobic count g-1). The result shows a significant difference (P<0.05) between the dump and the control soil The concentration of TEs (As, Cd, Cr, Hg, and Pb) in snails reared with dump soil were 2.20, 2.68, 1.08, 2.23, and 2.89 mg/kg respectively. The control recorded 0.28, 1.89, 0.36, 0.16 and 0.24 mg/kg. The values were greater than the maximum permissible limit of 0.5, 2.0, 0.3, 0.1, and 0.1 mg/kg respectively recommended by FAO/WHO compared to the control. The study concludes that snails bioaccumulate toxic elements and microbial loads from the soil used in rearing them which is deleterious to human health when consumed.","PeriodicalId":237717,"journal":{"name":"Applied Research in Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129210644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste reduction in barwon dining chair production process using the failure mode and effect analysis (fmea) method on CV. Valasindo Sentra Usaha","authors":"B. Suhardi, Femilia Setya Puji Hastuti, W. Jauhari, P. W. Laksono","doi":"10.33292/areste.v1i1.3","DOIUrl":"https://doi.org/10.33292/areste.v1i1.3","url":null,"abstract":"The furniture industry has a vital role in economic growth in Indonesia by one of the activities that are international trade. During the last year, the export value of the furniture industry has increased. It can make an increase of industrial competition in the global market. Therefore, production efficiency needs to be improved under the four pillars that affect global market competitiveness. This study focuses on the Barwon Dining Chair sub-product because it has the most and constant demand with an average demand is 57 units per month while the company experiences delay until 88% with an average delay of 14 days. Determination of Value Added (VA), Non-Value Added (NVA), and Necessary Non-Value Added are used to describe the current Value Stream Mapping (VSM) as an explanation of the production process flow. Failure and Effect Analysis (FMEA) is used to identify a system with the risk of failure and its consequences by giving values from severity, occurrence, and detectability and generating the largest number of RPN assembly stations at 45. The improvements are warehouse rack design and the box at the assembly station, reducing the time to approximately 2 minutes.","PeriodicalId":237717,"journal":{"name":"Applied Research in Science and Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131825072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}