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Articles 181 - 210 of 590
Full-Text Articles in Biotechnology
Design Of High Gain And Improved Front-To-Back Ratio Multilayer Microstrip Patch Antenna Using Modified Feed Line, Deb Partha Kumar, Moyra Tamasi, Bhattacharyya Bidyut Kumar
Design Of High Gain And Improved Front-To-Back Ratio Multilayer Microstrip Patch Antenna Using Modified Feed Line, Deb Partha Kumar, Moyra Tamasi, Bhattacharyya Bidyut Kumar
ASEAN Journal on Science and Technology for Development
A novel high gain miniaturized rectangular microstrip patch antenna is proposed with a high front-to-back ratio (FBR) using a modified feed line and two single-sided substrate layers to operate at 2.4 GHz frequency. The feed line is modified using a step impedance technique to achieve resonance at the operating frequency. The matched impedance of the feed line helps achieve enhanced bandwidth and antenna miniaturization. The substrate layers are introduced to achieve an enhanced gain and FBR of 6.329 dBi and 27.64 dB, respectively. The impedance bandwidths of 106.9 and 94.1 MHz are achieved for the two separate designs. These proposed …
Black Soldier Fly (Hermetia Illucens) As A Potential Agent Of Organic Waste Bioconversion, Purnamasari Listya, Khasanah Himmatul
Black Soldier Fly (Hermetia Illucens) As A Potential Agent Of Organic Waste Bioconversion, Purnamasari Listya, Khasanah Himmatul
ASEAN Journal on Science and Technology for Development
The use of black soldier fly (BSF) as a bioconversion agent has become an emerging breakthrough in waste processing. Organic wastes, such as household waste and livestock manure, can be used as a growth medium for BSF larvae and converted into favorable products. The average composting time of BSF larvae is around 12– 15 days, which is faster than that of microbes or earthworms (4–5 weeks). BSF shows potential as a feed and food ingredient because it has a high nutritional content, such as enzyme, chitin, medium-chain fatty acid, and antimicrobial peptides, and can be used as a functional food …
Regulatory Amendments Of The Strategic Policy For The Job Creation In Indonesia: Research And Innovation Aspect, Putera Prakoso Bhairawa, Widianingsih Ida, Ningrum Sinta, Suryanto, Rianto Yan
Regulatory Amendments Of The Strategic Policy For The Job Creation In Indonesia: Research And Innovation Aspect, Putera Prakoso Bhairawa, Widianingsih Ida, Ningrum Sinta, Suryanto, Rianto Yan
ASEAN Journal on Science and Technology for Development
The Job Creation Law, enacted in Indonesia in November 2020, has provided a new understanding of the sectors, such as investment and business activities, employment, and ease of conducting business, that are directly related to various aspects of regulatory adjustment. Research and innovation related to regulatory adjustments have received growing attention in recent years. This article thus attempts to reveal regulatory amendments from the strategic policy of job creation, particularly in terms of research and innovation, grouped into four topics: 1) conducting research and innovation activities; 2) supporting human resources and expertise; 3) stipulating policy support for facilitation, licensing, and …
Deepening Knowledge Of Nutrient Dynamics In Coastal Waters, Meirinawati Hanny, Wahyudi A'An Johan
Deepening Knowledge Of Nutrient Dynamics In Coastal Waters, Meirinawati Hanny, Wahyudi A'An Johan
ASEAN Journal on Science and Technology for Development
Nutrients are important compounds in waterbodies that regulate primary productivity and phytoplankton growth, the basis of food webs. Increased nutrient concentration has become a serious concern because it causes eutrophication and threatens the sustainability of ecosystems. Eutrophication is the process of nutrient enrichment in water bodies that affects their productivity and decreases water quality. Although information about nutrient distribution, limiting nutrients, and nutrient budgets is important for coastal water management, studies of wide-scale nutrient dynamics in Indonesian waters remain limited. To provide comprehensive data on nutrients, this review summarized the concentrations and compositions of nutrients in coastal waters, compared the …
Coastal Vulnerability Assessment For Community Resilience On Abrasion: Case Of Bugel Coast, Kulon Progo Regency, Indonesia, Ramadhan Cahyadi, Dina Ruslanjari, Diana Puspitasari, Gading Dita Indasari, Naufal Sandro
Coastal Vulnerability Assessment For Community Resilience On Abrasion: Case Of Bugel Coast, Kulon Progo Regency, Indonesia, Ramadhan Cahyadi, Dina Ruslanjari, Diana Puspitasari, Gading Dita Indasari, Naufal Sandro
ASEAN Journal on Science and Technology for Development
The coastal boundary can be optimized for settlement and agriculture site based on a spatial plan for Kulon Progo Regency 2012–2032 within a minimum distance of 100m from the coastline. The location of ring 1 local transmigration settlement on the Bugel Coast is less than 100 m. The increasing trend in coastal erosion caused by climate change is a major contributing factor to the reduction of coastal borders. Thus, rapid assessment of coastal erosion vulnerability is necessary to determine an effective coastal management response. This paper aims to analyze the coastal erosion level using vulnerability assessment, geomorphology of coastal areas, …
Isolation And Characterization Of Potential Lactic Acid Producing Bacteria From Fermented Fruit Juice, Than Wah Wah, Maw Saw Sandar, Htun Reemon
Isolation And Characterization Of Potential Lactic Acid Producing Bacteria From Fermented Fruit Juice, Than Wah Wah, Maw Saw Sandar, Htun Reemon
ASEAN Journal on Science and Technology for Development
Lactobacillus species are used as probiotics to inhibit human pathogens because of their ability to produce antimicrobial substances. However, when different kinds of antibiotics are used, the antibiotic resistance of drug-resistant bacteria increases. In this study, lactic acid-producing bacteria with antimicrobial activity were isolated and used as probiotics to inhibit six human pathogens, namely Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Bacillus cereus, Salmonella typhi, and Shigella boydii. Nine bacterial isolates were obtained from the crude juice of sugar cane (Saccharum officinarum), strawberry (Fragaria ananassa), and fruit pulp of palm (Borassus flabellifer). Among them, three bacterial isolates (S1, SC, and PP) …
Grand Design For Merapi Irrigation Channel System Using Watershed And River Region Approaches Based On Community Development In Yogyakarta, Indonesia, Suprayogi Slamet, Gunawan Totok, Murti Sigit Heru, Prihantarto Wikan Jaya, Alatas Masrur
Grand Design For Merapi Irrigation Channel System Using Watershed And River Region Approaches Based On Community Development In Yogyakarta, Indonesia, Suprayogi Slamet, Gunawan Totok, Murti Sigit Heru, Prihantarto Wikan Jaya, Alatas Masrur
ASEAN Journal on Science and Technology for Development
This paper proposes a grand design for Merapi Irrigation Channel, an irrigation channel system spanning from Turi to Cangkringan District in Yogyakarta, Indonesia. This design is based on Geographic Information System research to assess the feasibility of the system from two aspects, namely geophysics using site selection approaches (watershed and river region) and community aspirations, analyze potential water resource availability to support its sustainability, and construct a grand design. Primary data acquired from IKONOS image interpretation were used to collect geophysical and ?eld data for parameter mapping, and spatial data were modeled using Geographic Information System technology to determine paths, …
Rapid Land Assessment For Salt Farming Development In The Coastal Area Of The Special Region Of Yogyakarta, Indonesia, Malawani Mukhamad N., Marfai Muh Aris, Yoga Aldhila G. H., Handayani Tiara, Cahyadi Ahmad, Sadali Mohammad Isnaini, Mahasin Mohamad Zaki, Hendratmoro, Suadi, Wiyono Maryadi Budi
Rapid Land Assessment For Salt Farming Development In The Coastal Area Of The Special Region Of Yogyakarta, Indonesia, Malawani Mukhamad N., Marfai Muh Aris, Yoga Aldhila G. H., Handayani Tiara, Cahyadi Ahmad, Sadali Mohammad Isnaini, Mahasin Mohamad Zaki, Hendratmoro, Suadi, Wiyono Maryadi Budi
ASEAN Journal on Science and Technology for Development
The government of Indonesia has faced several challenges to its goal of achieving salt self-sufficiency, necessitating the formulation and implementation of strategic steps to increase salt production. Among its islands, Java has a great deal of potential for salt production, as does the Special Region of Yogyakarta, where the government has initiated salt farming development as part of its coastal community empowerment program. This study aimed to (1) evaluate the land suitability of existing salt farms and (2) identify potential sites and make a productivity estimation of salt farms in the Special Region of Yogyakarta, with the broad objective of …
Bcsa Rawmix Design: Correlation Between Chemical Constituents And Mineralogy, Palla Suresh, Vanguri Suresh, Ramakrishna S, Chaturvedi S. K, Mohapatra B. N
Bcsa Rawmix Design: Correlation Between Chemical Constituents And Mineralogy, Palla Suresh, Vanguri Suresh, Ramakrishna S, Chaturvedi S. K, Mohapatra B. N
ASEAN Journal on Science and Technology for Development
The cement industry has been identified as one of the main contributors to climate change due to greenhouse gas emissions, mainly CO2. Therefore, to meet CO2 reduction targets, cement producers are working on different strategies of minimizing its emission, one of which is alternative clinkers. This study assessed the impact of variations of the raw mix design, concerning the type and proportions of materials, on the formation of calcium sulphoaluminate belite-type clinkers. Various materials were used to produce raw mixes for different percentages of belite, yeeliminite, and other minerals in resultant clinkers. Computer-based theoretical mixes were designed with different percentages …
Analyzing The Application Of Void Decks On High-Rise Affordable Housing In Jakarta, Indonesia, To Achieve Optimal Urban Ventilation, Ririhena Megan Afkasiga, Syafii Nedyomukti Imam
Analyzing The Application Of Void Decks On High-Rise Affordable Housing In Jakarta, Indonesia, To Achieve Optimal Urban Ventilation, Ririhena Megan Afkasiga, Syafii Nedyomukti Imam
ASEAN Journal on Science and Technology for Development
Economic growth in ASEAN countries encourages significant urbanized growth. In line with the growth of urbanization, large swathes of residential buildings have been constructed in urban areas, especially, in the case of Indonesia, through the government's 1000 rusun (high-rise affordable housing) development program in Jakarta. In order to reduce energy consumption and create a sustainable rusun, a passive strategy is needed in the form of natural air conditioning through optimized natural ventilation in these buildings. In this study, testing was conducted on Rusun Rorotan in Jakarta, from two wind source directions (north and northwest) with five void decks configuration samples …
Dielectric Relaxation Studies Of Hydrogen Bonded Complexes Of Benzamide And Acetamide With Halogenated Phenols Using X-Band Microwave Frequency, Basha A. Aathif, Khan F. Liakath Ali
Dielectric Relaxation Studies Of Hydrogen Bonded Complexes Of Benzamide And Acetamide With Halogenated Phenols Using X-Band Microwave Frequency, Basha A. Aathif, Khan F. Liakath Ali
ASEAN Journal on Science and Technology for Development
At 308 K, using a 9.37 GHz dielectric relaxation setup, dielectric studies of hydrogen bonded complexes of benzamide and acetamide with 4-fluorophenol, 4-bromophenol, 4-chlorophenol, and 4-iodophenol in benzene were performed. Various dielectric parameters (such as ?', ?'', ?0, ??) were tested. The steric interactions of the proton donor determined the group rotation relaxation time t(2), whereas the significance of the single frequency method of Higasi et al. for multiple relaxation time t(1) was determined by the hydrogen bonding power of the phenolic hydrogen. The presence of a 1:1 complex system between the prepared samples, as well as a charge transfer …
Potential Of Three Taro (Colocasia Esculenta L.) Cultivars As Animal Feed, Setyawan Hidayat Bambang, Yulianto Roni, Zelin Oviaki, Purnamasari Listya
Potential Of Three Taro (Colocasia Esculenta L.) Cultivars As Animal Feed, Setyawan Hidayat Bambang, Yulianto Roni, Zelin Oviaki, Purnamasari Listya
ASEAN Journal on Science and Technology for Development
The growth and yield of taro (Colocasia esculenta L.) plants are influenced by the planting material. The use of planting material derived from corms is expected to improve the quality and quantity of taro growth and yield. This research aimed to find the best type of planting material and cultivars for taro growth and the potential of taro plants as animal feed. The experiment was carried out in Jember, East Java ( elevation ±89 m asl). The experiment used the randomized completed block design method with two treatment factors, the type of planting material (B) as the first factor (B1: …
Study Of Microstructure And Mechanical Properties Of As-Built And Heat-Treated Additive Manufactured Inconel 718 Alloy, Maurya Ajay Kumar, Kumar Amit
Study Of Microstructure And Mechanical Properties Of As-Built And Heat-Treated Additive Manufactured Inconel 718 Alloy, Maurya Ajay Kumar, Kumar Amit
ASEAN Journal on Science and Technology for Development
Additive manufacturing technology is becoming popular in the industry because it allows the manufacturer to fabricate cost-effective, strong, lightweight, and complex-shaped parts directly from 3D design data as compared with the conventional manufacturing method. Inconel 718 alloy is the most demanding material in aviation as well as in the automobile industry, in terms of manufacturing high-performance parts. In this study, Inconel 718 samples were built using the direct metal laser sintering process, and standard heat treatment was performed on the samples to improve their microstructure and mechanical properties. The as-built samples exhibited good grain structure with fine laves phases, but …
Recent Advances In The Use Of Transglutaminase In Cheese Production, El Kiyat Warsono, Laurenthia Evlyn, Michaela Janice, Fariz Pari Rizfi
Recent Advances In The Use Of Transglutaminase In Cheese Production, El Kiyat Warsono, Laurenthia Evlyn, Michaela Janice, Fariz Pari Rizfi
ASEAN Journal on Science and Technology for Development
Various enzymes are used in the food industry to improve product quality. The enzyme transglutaminase is used to modify proteins in various foods through the formation of inter- and intramolecular epsilon-(gamma-glutamyl) lysine bonds. Previous studies have revealed that using transglutaminase in cheese production can increase the yield and enhance the characteristics of various types of cheese. However, the enzyme concentration, temperature, and pH influence the quality of cheese. This review aimed to discuss the potential of transglutaminase in cheese production. Our analysis showed that transglutaminase catalyzes the formation of covalent bonds between milk proteins (crosslinking), which results in a greater …
Assessment Of Trace Elements In Soils And Sediments In The Abandoned Mercury Mine Site In Puerto Princesa City, Philippines, Samaniego Jessie, Gibaga Cris Reven, Tanciongco Alexandria, Rastrullo Rasty
Assessment Of Trace Elements In Soils And Sediments In The Abandoned Mercury Mine Site In Puerto Princesa City, Philippines, Samaniego Jessie, Gibaga Cris Reven, Tanciongco Alexandria, Rastrullo Rasty
ASEAN Journal on Science and Technology for Development
An abandoned mercury mine area in Puerto Princesa City, which was previously operated by Palawan Quicksilver Mines, Inc. (PQMI) from 1953 to 1976, is known for its unrehabilitated open-pit of mercury-rich rocks and exposed mine waste calcine stockpiles in the vicinity. In order to establish an understanding on the geology of the abandoned mercury mine deposit and to obtain clues in determining the possible metal pollutants in the area, measurement of trace element concentrations of soil and sediments collected from the PQMI vicinity were conducted. Soil and sediment samples were analyzed for heavy metals, rare-earth elements and naturally occurring radioactive …
Harnessing Multi-Label Classification Approaches For Economic Phenomena Categorization, Nofriani, Budi Kurniawan Novianto
Harnessing Multi-Label Classification Approaches For Economic Phenomena Categorization, Nofriani, Budi Kurniawan Novianto
ASEAN Journal on Science and Technology for Development
One fashion to report a country’s economic state is by compiling economic phenomena from several sources. The collected data may be explored based on their sentiments and economic categories. This research attempted to perform and analyze multiple approaches to multi-label text classification in addition to providing sentiment analysis on the economic phenomena. The sentiment and single-label category classification was performed utilizing the logistic regression model. Meanwhile, the multi-label category classification was fulfilled using a combination of logistic regression, support vector machines, k-nearest neighbor, naïve Bayes, and decision trees as base classifiers, with binary relevance, classifier chain, and label power set …
Constructing An Imaginary Wall In The Ocean: A Technical Cartography Study On The Delimitation Of Maritime Boundaries In The Provinces Of South Sumatra And Bangka Belitung Islands Based On Gis, Kurniawan Agung, Khakhim Nurul, Slamet Hardjo Karen, Iwan Santoso Agus, Setiyo Pranowo Widodo
Constructing An Imaginary Wall In The Ocean: A Technical Cartography Study On The Delimitation Of Maritime Boundaries In The Provinces Of South Sumatra And Bangka Belitung Islands Based On Gis, Kurniawan Agung, Khakhim Nurul, Slamet Hardjo Karen, Iwan Santoso Agus, Setiyo Pranowo Widodo
ASEAN Journal on Science and Technology for Development
Marine management areas in Indonesia can be claimed 12 nautical miles from the coastline by regional governments, according to Law 23 of 2014. However, in reality, there are many provinces whose distances to other provinces are fewer than 2 × 12 nautical miles, necessitating that they be delimited fairly and proportionally. The provinces of South Sumatra and Bangka Belitung Islands are such an example. The absence of clear boundaries drawn on the national map of Indonesia was the fundamental problem and focus of this study, owing to the need for delimitation of regional sea boundaries. The delimitation method used to …
Structural And Electrical Properties Of Silica Materials From Rice Husks, Casnan, Purnawan, Noor Erliza, Hardjomidjojo Hartrisari, Irzaman, Rohaeti Eti, Kurniawan Aditya
Structural And Electrical Properties Of Silica Materials From Rice Husks, Casnan, Purnawan, Noor Erliza, Hardjomidjojo Hartrisari, Irzaman, Rohaeti Eti, Kurniawan Aditya
ASEAN Journal on Science and Technology for Development
This study aimed to analyze the structural and electrical properties of silica from rice husks recovered by the process of ashing on a medium-scale furnace with a capacity of 15 kg. Rice husks were burned at a heating rate of 1.5°C/min to a temperature of 900°C, where the temperature was retained for 1 hour each at 400°C and 900°C. The methodology of this research was conducted through the process of ashing, extraction of silica, and characterization of its structural electrical properties. The silica extracted from rice husk ash had a relatively low water content by the low absorption intensity of …
The Effect Of Raw Mesocarp Fibre Inclusion On The Durability Properties Of Lightweight Foamed Concrete, Othuman Mydin Md Azree
The Effect Of Raw Mesocarp Fibre Inclusion On The Durability Properties Of Lightweight Foamed Concrete, Othuman Mydin Md Azree
ASEAN Journal on Science and Technology for Development
Researchers around the globe have recognised the potential need for lightweight, reliable, easy to use, affordable, and even more sustainable building materials. One of the vanguard proposals has been the procurement, development and use of alternative, non-conventional local building materials, which includes the possibility of utilising lightweight foamed concrete (LFC). LFC is excellent under compression but poor in tensile stress, as it produces multiple microcracks. LFC cannot withstand the tensile stress induced by applied forces without additional reinforcing elements. This research was conducted to examine the potential utilisation of oil palm mesocarp fibre-reinforced (OPMF) LFC in terms of its durability. …
Hec-Hms Model For Urban Flood Analysis In Belik River, Yogyakarta, Indonesia, Suprayogi Slamet, Rifai, Latifah Reviana
Hec-Hms Model For Urban Flood Analysis In Belik River, Yogyakarta, Indonesia, Suprayogi Slamet, Rifai, Latifah Reviana
ASEAN Journal on Science and Technology for Development
The rapid development of Yogyakarta has made city development increase. This construction continues to expand the reach of impervious surfaces. As a result, surface runoff and maximum discharge have increased, overflowing up to urban drainage. This study aimed to analyze the maximum discharge of the watershed based on design storms with 2, 5, 10, and 25-year return periods, used for flood control considerations. The urban flood was modelled using HEC-HMS. The results showed that the contribution of discharge flow in each segment is influenced by the dominance of land use, in which the segment dominated by dense settlements has a …
Optimum Medium For Lipase Production By Lipolytic Filamentous Fungi Isolated From Kendari Landfill Soil, Rayani Nur, Ilmi Miftahul
Optimum Medium For Lipase Production By Lipolytic Filamentous Fungi Isolated From Kendari Landfill Soil, Rayani Nur, Ilmi Miftahul
ASEAN Journal on Science and Technology for Development
Lipase produced by Aspergillus is widely known and used in many industrial sectors. In a previous study, three lipolytic filamentous fungi were isolated from Kendari (Southeast Sulawesi, Indonesia) landfill soil and identified as Aspergillus niger KE1, Aspergillus terreus KC1, and Aspergillus fumigatus KE6. However, the optimization of these isolates has not been reported. In this study, statistical optimization was selected because it is more effective, efficient, economical, and robust in achieving results, and the possibility of analyzing the interaction effects among factors. Three lipolytic isolates were screened in the initial medium to obtain the highest lipolytic isolate, which was used …
Seismic Safety Assessment Of Existing Low-Rise Rc Buildings With Rapid Visual Screenings And Preliminary Evaluation Methods, Aung Moe Myat Myat, Aye Mya Nan
Seismic Safety Assessment Of Existing Low-Rise Rc Buildings With Rapid Visual Screenings And Preliminary Evaluation Methods, Aung Moe Myat Myat, Aye Mya Nan
ASEAN Journal on Science and Technology for Development
Mandalay, the second largest city in Myanmar, is situated near the Sagaing Fault (the major fault in Myanmar). In the Mandalay region, the number of low-rise buildings is much greater than that of high-rise buildings. As such, seismic safety assessments of low-rise buildings play an important role in developing Mandalay as a smart city. In this study, the rapid visual screening (RVS) and preliminary evaluation for 26 numbers of three- to eight-story RC buildings were investigated with three different RVS and preliminary evaluation methods. Based on the RVS methods, the FEMA P154 Level 1 and 2 results gave the highest …
Investigation Of The Distribution Of The Daytime Employed Population Of Yangon, Myanmar, With And Without The Impact Of Work From Home, Aung Ye Wint, Myint San San
Investigation Of The Distribution Of The Daytime Employed Population Of Yangon, Myanmar, With And Without The Impact Of Work From Home, Aung Ye Wint, Myint San San
ASEAN Journal on Science and Technology for Development
Work from home (WFH) has gradually become more popular since COVID-19 started its transmission in Myanmar during the first quarter of 2020. Its consequence was a re-evaluation of the culture of workplaces and a significant change has occurred to the pattern of daytime employment distribution. In this paper, the network distribution model was built with three constraints, Distribution Bias 1, 2, and 3. These biases were determined through questionnaires, survey data collections of responses from Yangonites, and geographical data of urban employment cores. These percentile biases influenced the amount of employed population per distribution times and gave rise to two …
Anticipating Ocean Deoxygenation In The Maritime Continent Of Southeast Asia, Wulandari Ita, Wahyudi A'An J., Triana Karlina
Anticipating Ocean Deoxygenation In The Maritime Continent Of Southeast Asia, Wulandari Ita, Wahyudi A'An J., Triana Karlina
ASEAN Journal on Science and Technology for Development
Oxygen plays an essential role in the biogeochemical process and ocean productivity, especially during the recent trend of climate change. Development of the oxygen loss condition, deoxygenation, receives less attention than ocean acidification and warming. Therefore, understanding deoxygenation is indispensable. The maritime continent waters of Southeast Asia (SEA) are well-known for marine biodiversity and unique geological features. The area is inevitably impacted by climate change and will suffer more due to less oxygen in seawater. Based on previous research, Bengal Bay has been affected by oxygen depletion and climate change, in which hypoxic rate conditions continuously increase. In the other …
Spurring Economic Growth In Terms Of Happiness, Human Development, Competitiveness And Global Innovation: The Asean Case, Zainurossalamia Za Saida, Amalia Siti, Darma Dio Caisar, Azis Musdalifah
Spurring Economic Growth In Terms Of Happiness, Human Development, Competitiveness And Global Innovation: The Asean Case, Zainurossalamia Za Saida, Amalia Siti, Darma Dio Caisar, Azis Musdalifah
ASEAN Journal on Science and Technology for Development
Happiness, human development, level of competitiveness, and capacity in innovation all play an important role in spurring long-term sustainable economic growth. This study presents the relationship between these factors—happiness, human development, competitiveness, and innovation in the ASEAN region—in how they influence economic growth. To date, there has been a lack of research on this specific issue, and thus it is an interesting and little-known one to study. Panel data were used comprising a combination of time series and cross-sections. The object of the study was ASEAN member countries using the multiple linear regression method. For the years of 2013–2019, we …
Vision-Based Size Estimation And Centroid Positioning Of Partially Occluded Fruits, Kyu Mya Thin Kyu, Aung Nay Zar
Vision-Based Size Estimation And Centroid Positioning Of Partially Occluded Fruits, Kyu Mya Thin Kyu, Aung Nay Zar
ASEAN Journal on Science and Technology for Development
The objective of this study was to propose a simple and efficient image processing algorithm for estimating the size and centroid of partially occluded round fruits. In the proposed method, the size and centroid of partially occluded fruit were estimated based on the mathematical properties of the arc-radius. The experimental tests were conducted in a laboratory with orange, Sunkist, apple, and tomato fruits by setting different occlusion conditions. The occlusion percentage was varied between 0% and 90%. The accuracy and processing time of the proposed method were compared with that of the widely-used conic-section circle fitting method. The results showed …
Exploration Of Local Microorganisms From Rumen And Their Potential To Make Silage From Agricultural Waste, Purnamasari Listya, Purnomo Hari, Setyawan Hidayat Bambang
Exploration Of Local Microorganisms From Rumen And Their Potential To Make Silage From Agricultural Waste, Purnamasari Listya, Purnomo Hari, Setyawan Hidayat Bambang
ASEAN Journal on Science and Technology for Development
Agricultural wastes are very diverse in type and have low nutrient values, especially in lignin and cellulose, which are difficult to digest. One way of overcoming this problem is by biological treatment using microorganisms, also known as silage. The availability of bio-activators that are both cost-efficient and easy to make further suggests that using local microorganisms may be an effective possible solution. This study focused on processing food crop waste (corn leaves) into silage using local microorganisms as the bio-activators. Research took place in the Agrotechnology Laboratory, University of Jember. The experimental design was completely randomized with four treatments: Treatment …
Two Approaches To Measure Trace Metals Fluxes At The Sediment–Water Interface: Sediment Porewater Profile And Benthic Incubation, Harmesa, Wahyudi Johan
Two Approaches To Measure Trace Metals Fluxes At The Sediment–Water Interface: Sediment Porewater Profile And Benthic Incubation, Harmesa, Wahyudi Johan
ASEAN Journal on Science and Technology for Development
The biogeochemical cycle of trace metals is very likely affected by the global change in the ocean, especially due to the increasing of sea surface temperature and acidity. Thus, assessing biogeochemical cycle of trace metals will beneficial in elucidating the potential impact of climate change as well as ocean acidification. The assessment of the biogeochemical cycle of trace metals can be performed by measuring trace metals fluxes crossing the sediment–water interface. The main challenge in this measurement is the difficulty of measuring metal concentrations at trace levels due to either physical factors or biological factors that can affect the total …
Spatio-Temporal Variations In Bacterial Abundance With An Emphasis On Fecal Indicator Bacteria And Vibrio Spp. In And Around Visakhapatnam Port, East Coast Of India, Khandeparker Lidita, Desai Dattesh V., Sawant Subhash Shivram, Krishnamurthy Venkat, Chandrashekar Anil Arga
Spatio-Temporal Variations In Bacterial Abundance With An Emphasis On Fecal Indicator Bacteria And Vibrio Spp. In And Around Visakhapatnam Port, East Coast Of India, Khandeparker Lidita, Desai Dattesh V., Sawant Subhash Shivram, Krishnamurthy Venkat, Chandrashekar Anil Arga
ASEAN Journal on Science and Technology for Development
The ecological health of port environments, which are dynamic and hotspots of anthropogenic activities, can be analyzed using specific pathogenic bacteria as they provide definite evidence and source of pollution. The influence of seasons and environmental settings on total bacterial count (TBC), distribution of fecal indicators, and Vibrio spp. was explored in Visakhapatnam port, located along the east coast of India. South-west monsoon had a significant influence on TBC, fecal indicators, and Vibrio spp., and the abundance was influenced by the eutrophic environment in the inner harbour. Fecal indicators were one order higher in sub-surface water when compared with sediment, …
Sea Level Rise In Indonesia: The Drivers And The Combined Impacts From Land Subsidence, Triana Karlina, Wahyudi A'An Johan
Sea Level Rise In Indonesia: The Drivers And The Combined Impacts From Land Subsidence, Triana Karlina, Wahyudi A'An Johan
ASEAN Journal on Science and Technology for Development
Sea level changes play an important role as an indicator of climate change. However, without climate change, the sea level itself shows strong regional patterns, both in space and time, that could deviate significantly from global averages. The spatial variability of sea level changes in Indonesia can be divided based on its drivers, i.e., climatic and seasonal weather-driven and non-climatic and geological-driven. Seasonally, the sea level in Indonesia is generally high in northwest monsoon and low in southeast monsoon. Nevertheless, there is a possibility of extreme natural phenomenon influences that generate anomalies and a thermosteric process that also affects the …