bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of a single-row push type plot seeder with mechatronic seed feeding device for corn (Zea mays L.) field breeding experiment
Authors: Tabal R E , Amongo R M C , Quilloy E P , Peralta E K 
Published: July 2022

Abstract
The absence of an appropriate mechanization technology for lower stages of field breeding experiment is a common problem in seed research industry. This study was focused on the development of a corn plot seeder to be used in planting corn seeds for lower stages of field breeding experiments. The machine was equipped with mechatronic seed feeding device to provide an efficient way of sowing for every plot. Field testing and cost analysis between the Corn plot seeder and two other seeders were conducted to determine the performance and economic viability. Results showed that the Corn plot seeder can sow seeds at 0.49 ha/day with a field efficiency of 42.46 %. Its row/hill spacing was also at the optimum values of 70 ± 3 cm and 21 ± 4 cm respectively. It was able to sow 1 ± 1 seeds per hill and generated a 93% planting efficiency with a 7% missed hill. The Corn plot seeder had the highest capital investment of Php 27,380.00 but had the cheapest annual operating cost of Php 27,963.36. The push type corn plot seeder with mechatronic seed feeding device was the most efficient and economical machine for lower stage corn field breeding experiment.
The characteristics of oil from plastic cups using various rice husk mass as fuel on integration prototype device of organic-inorganic waste
Authors: Sigalingging R , Susanto E , Hutasoit E D 
Published: July 2022

Abstract
Energy recovery through waste-to-energy processes can provide an effective means of organic and inorganic treatment, sustainable energy generation, and resource recovery using integration pyrolysis equipment. The study objective was to analyses the characteristics of oil cups by using various masses of rice husk. The integration pyrolysis of an organic-inorganic waste device equipped with a temperature measuring device directly connected to a computer and the rice husk (8, 9, and 10 kg per batch with moisture content (% w.b) 7.94±0.86 from North Sumatera, Indonesia), and plastic cups (3 kg per batch) to be used. The results shows that the highest oil density of cups of mineral water plastic was using 10 kg of rice husk (M3), 0.7998 gr/ml, and the lowest density is in 8 kg rice husk (M1), 0.7507 gr ml-1. While the highest oil viscosity was 1.0988 cP in 10 kg of rice husk mass (M3), and the lowest was 0.9447 cP in 8 kg of rice husk (M1).
NIR spectroscopy as an environmentally friendly method to determine the lipid and carbohydrate concentration in Lintong Arabica coffee bean
Authors: Rindang A , Ayu P C , Sahfitri  
Published: July 2022

Abstract
Proximate concentration of green bean coffee is known as an important quality which influence the final flavour of coffee beverage. Lipid and carbohydrate are two of the proximate concentration, so that determination of those concentration in green coffee bean is needed. Commonly, determination of lipid and carbohydrate concentration was conducted using chemical method. This method spend time and destructive, so it is not suitable for industries which need a fast, nondestructive and environmentally friendly measurement. This study aimed to calibrate the NIR and chemical data of lipid and carbohydrate concentration using PLS method to build a real time prediction of coffee bean concentration. This study used a NIR wave of 1000-2500 nm, followed by determination of lipid and carbohydrate concentration by proximate analysis, first and second derivative, multiple scatter correction and standard normal variate as NIR data pretreatment. Result showed that lipid and carbohydrate concentration of Lintong arabica coffee bean could be well predicted using FT-NIRS.
Virtual Screening of Alpha Glucosidase Inhibition Using Common-Urban Herbs in Indonesia
Authors: Rahmasuha S , Lukitasari M , Fauziyah  , Jadid N , Ramadhan R , Hidayati D 
Published: July 2022

Abstract
Indonesia as a mega-biodiversity country have rich potential of herbal medicine that can growth easily at rural and urban area. Recently, Indonesian urban people are encouraged to have their own family herb plants namely tanaman obat keluarga or TOGA, which can increasing the health quality as well as economically. The urban herbs that are commonly planted may have esthetical and medical purposes. However the common urban herbs for medical purposes have not been proved yet scientifically. The objective of this study was to screening virtually the antidiabetic potential of bioactive compounds in common-urban herbs including Catharanthus roseus, Peperomia pellucida, Areta catechu, Physalis angulata, Apium graveolens, Imperata cylindrica, and Cassia siamea. Based on the references we selected the candidate of bioactives that contained in those common urban herbs such as Lochnerine, Cylindrene, Dihydroquercetin, Limonene, Vindolidine, Withangulatin-A, and Yohimbine. The selected bioactives were performed as ligands which their 3D structure were searched from the database of Pubchem prior to molecular docking analysis toward alpha glucosidase using PyRx method. Among the selected bioactives from common urban herbs, we found that withangulatin-A from Physalis angulata has the highest potential of antidiabetic medicine herbal via alpha glucosidase inhibition.
Morphometric characteristics of the Alas-Singkil drainage basins
Authors: Muhtadi A , Aldiano R , Khairunnisa  , Leidonald R 
Published: July 2022

Abstract
The Alas-Singkil drainage basin is the broadest watershed and an essential ecosystem for maintaining hydrology and ecosystems in the northern Sumatera. This study aims to describe the morphometric and hydrological characteristics of the Singkil watershed. The data sourced from Google Earth, DEM data and the results of team expeditions at the sub-watershed locations. The data analysis is related to the characteristics of the Singkil watershed, which include watershed area, watershed shape, river network, river flow pattern, river flow density, and watershed hydrology. Analysis of hydrological characteristics by calculating the peak of the flood was also carried out. The results showed that the Singkil watershed is a broad watershed with an area of 12027.18 km2. The Alas-Singkil drainage basin consists of 7 sub-watersheds, with the length of the main river reaching 368 km. The order of Singkil watershed reaches 8 orders and consists of 7235 orders 1, 1964 orders 2, 390 orders 3, 92 orders 4, 26 orders 5, 6 orders 6, 4 orders 7. The shape of Alas-Singkil drainage basin is elongated with RC value of 0.16. The level of river branching in the Alas-Singkil watershed is 4.76. The maximum discharge in the Alas-Singkil watershed reaches 59,178 m3/sec.
Application of sentinel 2A sattelite imagery for the estimation of canopy cover spatial distribution at mangrove vegetation
Authors: Sulistiyono N , Syafitri R , Hudjimartsu S A 
Published: July 2022

AbstractMangrove canopy density is one of the important variables for monitoring the health of mangrove vegetation. The vegetation index in satellite imagery is one of the variables that can be used to estimate the distribution of mangrove forest canopy cover. This study aims to predict the distribution of canopy cover of mangrove planted in Lubuk Kertang. The method used is regression analysis by connecting the NDVI value in the Sentinel 2A satellite image with the canopy density value in the field. Measurement of canopy cover in the field using a fisheye camera. The use of GIS is used to determine the spatial distribution of canopy cover. This study indicates that the linear regression model can estimate the canopy density distribution of mangrove vegetation in Lubuk Kertang with an R square value of 53.6% (sig < 0.005).
The implementation of open space toward living harmony at Taman Burung Cemara Asri in Medan, North Sumatra
Authors: Abus A F , Lubis T , Abus N A A 
Published: July 2022

Abstract
Taman Burung Cemara Asri as an open space has structuring and managing the landscape used the principles of sustainable in the implementation. The objective of this study was to describe the implementation of open space toward living harmony at Taman Burung Cemara Asri in Medan, North Sumatra. This research used qualitative research with a phenomenological research approach. The data were the landscape of Taman Burung Cemara Asri that consist of hard material and soft material. The description of this study showed that Taman Burung Cemara Asri as a concept of open space has several functions, including ecological functions, social functions, aesthetic functions, and economic functions. The ecological function is shown through the concept of good reforestation and a suitable microclimate. The social function of open space development can be seen from the pattern of activities presented, namely as a means of exercise, play, and recreation. The aesthetic function is shown through a landscape that looks beautiful, natural, has its charm, and is acceptable to residents and visitors. The economic function can be seen through the existence of open space used by the community to improve the community’s economy with the presence of vendors around the Taman Burung Cemara Asri.
Inventory insects of sorghum plantation in Northern Sumatera, Indonesia
Authors: Siregar A Z , Tulus  , Yunilas  , Nisa S C A 
Published: July 2022

Abstract
The purpose of this research was to invent types and abundance insects in sorghum plantation in Lalang Village, Rambutan District, Tebing Tinggi from July to August 2021, with an area of 12 m × 12 m. Insects were collected using sweep traps, pit fall traps, light traps and yellow sticky traps. The collected insects were collected and then were identified. Data analysis was carried out by descriptive quantitative with Purposive Random Sampling (PRS), which identified in the Pest labouratory-USU. The results research identified was four insects Orders (Coleoptera, Diptera, Hemiptera and Lepidoptera) with 9 families (Chrysomelidae, Scarabaeidae, Cecidomyiidae, Muscidae, Aphidae, Dephiciodae, Pentatomidae, Noctuidae, Pyraliidae) and 16 species. The highest insect pest population was at the time of the sixth sampling as many as 634 individuals/plot, the predator population was 248 individuals/plot, and the parasitoid population was 118 individuals. Calculation of richness index R1yst=8.49: R1sn=7.65, eveness index (Eyst=0.59; Esn=0.48) and insects diversity Shannon-Wiener index (H’yst=2.56; H’n=2.13). Then the parameter environmental measure of temperature (30.3-36.2°C), humidity (82-90%) were carried out during the sorghum plantation period.
Distribution, characteristics and models of community roles in the utilization and preservation of environmental services in the Simarjarunjung nature tourism area, North Sumatra Province
Authors: Purwoko A , Sahputra A 
Published: July 2022

Abstract
Indonesia, especially in North Sumatra Province, has many tourist destinations that take advantage of its uniqueness, exotica and natural beauty. Some of these destinations are managed or at least involve the community in their management, such as the Simarjarunjung Nature Tourism Area, Dolok Pardamean District, Simalungun Regency. This study aims to identify the distribution and characteristics of natural tourism objects, examine the use of environmental services and the role of the community in preserving environmental services in the Area. The results showed that in the Simarjarunjung Nature Tourism Area from the tracking and point paths there were 5 natural tourist locations, namely Pine Hills Nature Tourism, Dolok Sipigul, Panatapan Dolok Sidoorangin, Bukit Indah Simarjarunjung and BIS Annex. The potential for environmental services utilized in the Area consists of a cool micro climate, beautiful natural scenery, camping ground areas, outbound activity areas, educational attractions and photography spots with views of Lake Toba. The majority of the management of natural tourism areas is carried out by the community together by forming a forest farmer group (KTH). The role of the community is analysed using several role indicators, namely expectations about the role, norms, forms of behavior in roles, assessment and sanctions.
Identification of the distribution of natural tourism objects along the outer ring road of Lake Toba Aek Nauli-Merek section, North Sumatra Province, Indonesia
Authors: Purwoko A , Slamet B , Pohan N Z P 
Published: July 2022

AbstractIndonesia as a country that has the potential for high value natural beauty has an average ecotourism growth of 10% per year. This figure is higher than the general growth rate of 4.6% per year. North Sumatra Province has many tourism objects based on the use of natural beauty, but the development is still limited, especially those along the outer ring of Lake Toba, the Aek Nauli Merek section. This study aims to identify and map the distribution of natural tourism objects along the outer ring of Lake Toba section of the Aek Nauli Merek section, North Sumatra Province. Distribution analysis was carried out using GIS software and Google Earth for data processing. The results of the study indicate that 49 natural attractions have been identified scattered along the research location. The forms of natural tourism consist of camping ground, outbound activities, educational tours, natural scenery/landscapes of Lake Toba. The results of the identification of the distribution of natural tourism objects are plotted on a map by taking coordinates consisting of graphic data anhd attributes for each identified tourist attraction.
Ethnobotany of medicinal plants in Asam Jawa Village, South Labuhanbatu, North Sumatra, Indonesia
Authors: Rambey R , Onrizal O 
Published: July 2022

Abstract
Every year, the use of natural compounds for the treatment of various diseases tend to increases. Traditional medicine derived from plants has long been used by the people of Indonesia. Despite significant advancement of modern medicine, medicinal plants have become the preferred alternative option for many tribes in Indonesia. The goals of this study were to (1) identify the medicinal plant species used in Asam Jawa Village, Torgamba District, South Labuhanbatu Regency, (2) identify the purpose of using each medicinal plant, (3) identify the part of the plant used, and (4) determine how to process and use each medicinal plant. This research method employs in-depth interviews with key respondents as well as the snowball sampling method for determining respondents. The findings revealed that the villagers of Asam Jawa Village utilized 40 different species of medicinal plants. The species were classified into 26 families. The most of families are originated from the Zingiberaceae family, which consist of five species (12.5%) Based on the therapy purpose, the species used for fever, cough, stomach pain, diarrhea, gout, cholesterol, itching medicine, backache medicine, anti-inflammatory, and others.
Identification of stingrays species and exploitation rate of blue-spotted maskray (Neotrygon kuhlii) landed at TPI tanjung beringin, Serdang Bedagai Regency, North Sumatera Province
Authors: Manurung V R , Nasution S F P , Nababan M , Desrita  , Hasibuan J S 
Published: July 2022

AbstractSerdang Bedagai Regency has fisheries and marine potential demersal species of stingray in TPI Tanjung Beringin. The current study used a survey and descriptive method, accompanied by sample collection and morphology identification, as well as determining the rate explotation of fish landed in TPI Tanjung Beringin. A total of five species were successfully identified:Neotrygon kuhlii, Brevitrygon heterura, Aetoplatea zonura, Maculabatis macruraand Rhynchobatus australiae. The most dominant stingray species landed in TPI Tanjung Beringin namely ofNeotrygon kuhlii,so that condition was an analysis ofNeotrygon kuhliiweight length relationship of fish and body weight is negative allometric growth is more dominant than weight gain. The growth rate Von Bertalanffy is L ∞ (infinity) value is 300.30 mm, K value is 0.42 and t0 value is -0.68, the fish growth can be influenced by internal and external factors. Mortality and exploitation rate ofNeotrygon kuhliitotal mortality (Z) value is 1.01, natural mortality (M) value is 0.59408, fishing mortality (F) value is 0.4192 and exploitation rate is 0.7105 as long as indicators high fishing mortality and decreasing natural mortality indicate a state of growth overfishing.
Biomass and carbon storage of Sargassum sp. in Poncan Gadang Island, North Sumatera Province
Authors: Hutapea E D , Susetya I E , Fadhilah A , Yusni E , Wahyuwatri I , Manik E A , Aritonang J E , Setyorini H B , Suriani M 
Published: July 2022

AbstractOne of the efforts made to reduce the increase in CO2is to use coastal vegetation such as macroalgae. This research was conducted in Poncan Gadang island, North Sumatera. The purpose of this research is to know the density and biomass of macroalgaeSargassumsp. and to estimate carbon storage in the macroalgaeSargassumsp. in the waters of Poncan Gadang island. The results showed that the biomass and carbon stores inSargassumsp. are quite large and varied from 2.82 kg C m-2, 4.80 kg C m-2, and 4.63 kg C m-2in every sampling point with an average of 4.08 kg C m-2. This meansSargassumsp. has the potential in mitigating climate change through carbon sequestration. Differences in the value of carbon stored in the biomass ofSargassumsp. are affected by biomass density and different carbon content at each sampling point due to environmental conditions.
Habitat characteristics of bicolor Pen Shell (Pinna bicolor) in seagrass ecosystems in Poncan Gadang Island, Sibolga City, Sumatera Utara
Authors: Susetya I E , Hutapea E D , Manik E A , Wahyuwatri I , Aritonang J E , Saridu S A 
Published: July 2022

Abstract
Poncan Gadang Island has a complete coastal ecosystem, one of them is the seagrass ecosystem. One of the biotas that inhabit the seagrass ecosystem on this island is the Bicolor pen shell. This shellfish has an ecological function because of its role in the food chain in seagrass beds and has economic value. This study aims to determine the abundance of bicolor pen shells and their relationship with seagrass cover, water physical-chemical parameters. The sampling was conducted at the research location in July – September 2021, which was located on Poncan Gadang Island. This activity was carried out at 3 stations. The primary data taken were the abundance of Bicolor pen shell, seagrass, physic-chemical parameters of water and substrate. Sampling was carried out three times. The results showed that the abundance of bicolor pen shells ranged from 1.8 to 2.8 ind m-2. Station 1 has the lowest abundance and the highest is at station 3. The PCA results show that the abundance of shellfish is positively related to temperature, DO, salinity and C-organic, while percent cover of seagrass, pH, water transparency, depth, and current were negatively related to the abundance of these shellfish.
Impact of distinct levels swimming crab shell powder (Portunus pelagicus) supplementation on in vitro rumen fermentation properties processed with phosphoric acid as a chitosan source
Authors: Anggraeni A S , Sofyan A , Jayanegara A , Laconi E B , Kumalasari N R , Herdian H , Darma I N G 
Published: July 2022

Abstract
The major goal of this study was to see how adding swimming crab shell to dietary feed affected in vitro gas production and fermentation of feed in ruminal fluid Completely Randomized Design (CRD) with five treatments and four replications was arranged on this research. The treatments are RJ0 as control negative (0% of SCS supplementation of DM), RJ1(10% SCS), RJ2 (20% SCS supplementation), RJ3 (30% SCS supplementation), and RJ4 as possitive control (1% commercial chitosan supplementation). The highest gas production given by RJ0 treatment than other treatment. Total gas production 1-48 hours, rate of gas production (c), microbial cell protein, IVDMD, IVOMD of supplementation of SCS was significantly affected by treatments (P<0.05). Gas production from total fraction (a+b), soluble fraction (a) and insoluble fraction (b), NH3 production, and ammount of protozoa indicated no significant difference (P>0.05) among treatments. In this study basal diets supplemented with 30% SCS treatment had the best result as chitosan source on rumen fermentation properties in vitro.
The comparative of activator effect and fermentation time on nutrient quality, physical quality (temperature, pH) in compost
Authors: Sadeli A , Wulandari A , Sinuraya L , Mirwandhono E , Hakim L 
Published: July 2022

Abstract
Activator in compost has key role to get soil nutrient more nutritious. Compost is one of organic material that help environment keep always good. This study was conducted to determine the effectiveness of Stardec and EM4 using cow feces, chicken manure, rice straw, palm fronds and palm leaves. Compost is one type of organic fertilizer derived from plant and animal waste which is very useful for improving nutrients in the soil. Most farms in Indonesia do not use waste such as animal manure to be used as compost. The research was conducted anaerobically, by analyzing N, P, K, water content, C/N ratio, pH, and temperature. The research design used was a completely randomized design (CRD) with a 7-day fermentation treatment and the provision of different activators, namely stardec and EM4. The results of this study indicate that compost using Stardec and EM4 activators showed levels of NPK, pH, Temperature met the standards for nutrient content, as well as physical quality.
Study of potential of plantation and agriculture waste as feed for support the development of cattle population in district along east coast of Sumatera Utara province
Authors: Mirwandhono E , Hasnudi  , Kardhinata E H 
Published: July 2022

Abstract
Development of various important industries in the region, such as livestock, agriculture and plantations (especially oil palm and rubber) led to a marked increase in regional domestic income. The increase in the economy affects the consumption pattern of the localcommunity, especially in relation to the increasing demand for foodstuffs of animal origin such as meat, eggs and milk. This study aims to determine of agricultural and plantation by product that used for feed for cattle This research was used a descriptive data. This research was conducted at North Sumatera Province drom May–August 2020. Results showed that North Sumatra Province,which in this study was represented by districts along the east coast, potential for developing beef cattle in several districts, namely Langkat Regency, Deli Serdang, Serdang Bedagai, Labuhanbatu Utara, Batubara, and Asahan are in accordance with the abundant sources of feed fromagricultural and plantation waste.