cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Arman Harahap
Contact Email
armanhrahap82@gmail.com
Phone
+6285370005518
Journal Mail Official
ijersc@gmail.com
Editorial Address
Jl. SM. Raja, Kota Rantauprapat, Sumatera Utara, Indonesia
Location
Unknown,
Unknown
INDONESIA
International Journal of Science and Environment
Published by CV. Inara
ISSN : -     EISSN : 28090551     DOI : https://doi.org/10.51601/ijse.v2i4
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics
International Journal of Science and Environment (IJSE) is to provide a research medium and an important reference for the advancement and dissemination of research results that support high-level research in the fields of Science and Environment . Original theoretical work and application-based studies, which contributes to a better understanding all fields of Science and Environment. The aim and scope of the journal Chemistry, Chemical Analysis, Physical Chemistry, Physics, Biology, Ecology, Biodiversity, Zoology, Biochemistry, Mathematics, Environmental Science, Agriculture, Environment, Forestry.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 156 Documents
 1   2   3   4   5 
Rabbit Farming Management Practices: A Case Of An Emerging Rabbit Farmer/Producer Nerisa Paladan
International Journal of Science and Environment (IJSE) Vol. 2 No. 4 (2022): November 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (879.319 KB) | DOI: 10.51601/ijse.v2i4.45

Abstract

Promoting rabbit (Oryctolagus cuniculus) farming responses to the challenges in food security and agricultural sustainability. The purpose of this study is to describe the management practices of emerging rabbit farmers/producers in rural areas in relation to their housing practices, feeding, breeding, and healthand disease management. Also, it identifies the benefit and challenges of rabbitfarming. Furthermore, a framework was developed in capacitating the rabbitfarmers/producers to make rabbit farming ventures a sustainable livelihood in rural areas. Descriptive research was utilized; 33 rabbit farmers are the respondents of this study; a snowball sampling technique was used to identify the respondent. In- depth semi-structured interviews and observation were used in gathering the data. Findings revealed that farmers invest in galvanized wire cages but some use local materials like bamboo and used wood however they need to improve their housing design even its backyard rabbit raising. The majority uses a combination of rabbit pellets & forages that are locally available for feeding the rabbit. Also, most of them acquire their rabbit breed from local rabbit breeders where the challenge to the farmers is the quality and the inbreeding. Skin disease and diarrhea are common diseases in rabbits andfarmers have knowledge of identifying the symptoms and also curing them. Themajor benefit of rabbit production it gives an additional source of income forrabbit farmers/producers while the major challenges are inadequate/limited knowledge of rabbit production and an unreliable market for rabbit breeds and meat.
Macroalgae Abundance And Cover As Ecological Indicators Of Coral Reef Management In The Waters Of Katapang Village, West Seram Regency, Maluku Province Masudin Sangaji
International Journal of Science and Environment (IJSE) Vol. 2 No. 4 (2022): November 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.808 KB) | DOI: 10.51601/ijse.v2i4.47

Abstract

Macroalgae are the main competitors for coral reefs in fighting for aquatic ecological space in coral reef ecosystems. The purpose of this research; Knowing the condition of the aquatic environment, the abundance and cover of macroalgae, and the potential of macroalgae for indicators of coral reef management in the coastal waters of Katapang Village. Data on the physical condition of the waters were measured in situ while macroalgae data for each research station were obtained using the LIT (Line Intercept Transect Method). Macroalgae taxa were identified using an identification guide book from FAO (1998). The distribution of each type of macroalgae was mapped spatially based on the distribution conditions of the macroalgae at each study station. The results showed that the condition of the waters of the coral reef ecosystem in Katapang Village was supportive for the growth of macroalgae. The macroalgae found came from 3 orders, 4 families, 5 genera and 8 species. The results also indicate that the abundance and cover of macroalgae determines the shift in dominance in reef ecosystems so that these two factors can be used as indicators of coral reef management.
Study Of Soil Physical Properties Of Oil Palm Plants (Elaeis Guinensis Jacq) In The Labuhanbatu University Practice Area In Rantau Selatan District Utandi Harahap, Sabribal; Syawal Harahap, Fitra; Walida, Hilwa; Rizal, Khairul
International Journal of Science and Environment (IJSE) Vol. 4 No. 3 (2024): August 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.217 KB) | DOI: 10.51601/ijse.v2i3.49

Abstract

The physical properties of the soil that need to be considered are the problem of degradation and soil structure due to management functions so that cultivated land is not eroded and organic matter is lost quickly.This research was carried out through 2 stages of activities, namely field activities and analysis activities. Stages of field activities were carried out at the Palm Oil Plantation on the Practical Land of Labuhanbatu University, Labuhanabtu, North Sumatra Province at a height of 28 meters. The method used in this research is a free grid measurement method at a semi-detailed survey level (observation frequency of 1 sample per 500 meters). Carrying out soil sampling at up to 5 sampling points with a distance of 100 meters in the field using a random method, spread over a predetermined area based on the base map. Results of land use research withSoil texture in the Labuhanbatu University Practice Field, Labuhanbatu Regency, sandy loam, The bulk density value shows low, soil porosity is still high, the soil color looks relatively dark, and the soil water content is still relatively normal.
Study Invasive Mollusks Melanoides tuberculata and Achatina fulica in District Labuhan Batu Selatan Arman Harahap
International Journal of Science and Environment (IJSE) Vol. 1 No. 1 (2021): November 2021
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.983 KB) | DOI: 10.51601/ijse.v1i1.50

Abstract

District Labuhanbatu selatan has natural/artificial inland waters for various usages. For example, freshwater has supported various activities such as agriculture, plantations, inland fisheries, and ecotourism. This study reports the presence of invasive mollusk in freshwater (Melanoides tuberculata) and terrestrial (Achatina fulica) habitats. This study is the first report regarding the spatial distribution of the three invasive mollusk species in the inland waters of District Labuhanbatu selatan. These invasive mollusks species are a severe threat to the preservation of native species and human health because they are an intermediate host for several types of parasites, such as the trematode group. The spreading and rapid development of these invasive mollusks is caused by their reproductive ability and resistance to poor environmental quality and airborne dispersal factors by birds, water flow, and commercial activities. This invasive species can directly cause huge economic losses as they become a pest inagricultural activities, plantations, and freshwater fisheries (aquaculture). They also can transmit pathogens and displacement of native species. Therefore, it is recommended to have a preventive effort to tackle the expansion of in District Labuhanbatu selatan.
Efficient Removal Of Bromate From Aqueous Solution Through Electrocoagualtion Using Aluminum Electrodes Nasser M. Abu Ghalwa; Hossam El din El Nazer; Nader B. Farhat; Mahmud Sror
International Journal of Science and Environment (IJSE) Vol. 3 No. 1 (2023): February 2023
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v3i1.51

Abstract

In this study the removal efficiency of bromate from aqueous solution using the electrocoagulation process was investigated. The effects of operational parameters such as initial pH, initial bromate concentration, current density, type electrode, salt concentration, and temperature on the removal efficiency have been studied. With an initial pH of 3.7, an initial bromate concentration of 100 mg/L, (current density 22.7 mA/cm2 using Al electrodes, salt concentration of 1.5 g/L NaCl and temperature of 25° C, The results showed that the removal percentage for bromate was 97% using Al/Al electrodes at 10 min. It can be concluded that electrocoagulation process by Al electrode is very efficient and clean process for bromate removal from Aqueous solution.
The Effect Of Giving Supremo Made From Active Glyphosate On The Control Of Banyan Weeds On Oil Palm Plants Produces Using The Root Infusion System Zulfan Ilham; Harahap FS; Badrul Ainy Dalimunthe; Dini Hariyati Adam
International Journal of Science and Environment (IJSE) Vol. 3 No. 1 (2023): February 2023
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v3i1.53

Abstract

The internship activity at PT Supra Matra Abadi Kebun Aek Nabara (KAN) in Bilah Hulu District, LabuhanBatu Regency, North Sumatra Province, this activity was carried out for four months, March-July and the method used was a completely randomized design (CRD) with 2 different treatments, namely by concentration of 6% and 7%. Results: Afdilling III PT Supra Matra Abadi controlled banyan weeds using two treatments, namely manually and chemically. The banyan weed is a nuisance plant, because its life clings to or suffocates the oil palm plant. The negative impacts on oil palm plants are pest attacks, competition occurs, humidity increases, making it difficult for the pruning and harvesting processes. The banyan weed population in PT Supra Matra Abadi is in block C87C and block C87G. The purpose of this study was to determine the effective and efficient concentration in the use of the supremo herbicide with the active ingredient glyphosate. Based on the results of research that has been carried out from the two concentrations of the herbicide supremo 480 SL which is effective and efficient for controlling banyan weeds in oil palm plants, namely a concentration of 7%. Because at a concentration of 6% it takes 30 days to see the banyan weed die
Optimal Vehicle Routing Problem (VRP) For The Distribution Of Medical Devices By Applying The Clarke-Wright Algorithm Hendra Cipta; May Fitriana Hasibuan
International Journal of Science and Environment (IJSE) Vol. 3 No. 1 (2023): February 2023
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v3i1.56

Abstract

In the current era of modernization, the development of the need for medical devices is increasing,g so that the companies need goods distribution system with criteria that have speed, safety, and convenience to distribute various kinds of products according to optimal distribution routes. The aim of this study is to overcome the problem of the distribution route for medical devices from PT Alkes Medan because the number of demand for goods varies for each consumers, vehicle capacites, delivery time limits, average speed that can be reached on certain routes and times and the existence of the different conditions of multiple trips at the customer's location. A heuristic algorithm named Clarke-Wright Algorithm is applied in this problem. This algorithm will be later provide an optimal solution to route problem in the distribution of medical devices and provide effectiveness in finding the shortest optimal route of medical device goods distributed to consumers. The optimal route will be described in the results section of this study
The Role Of Inter-Sectors In Agroforestry Development In The Community Forest Environment, Pacitan District Anang Susanto; Marti Winarni Susanto
International Journal of Science and Environment (IJSE) Vol. 3 No. 1 (2023): February 2023
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v3i1.57

Abstract

Communities around the forest need to be encouraged in the development of forestry plants by the community either independently or with the assistance—of the government so that environmental sustainability can be adequately controlled. The development system carried out by the community, in general, is a hybrid system or better known as the agroforestry system. This study aims to identify sectors related to efforts to develop forestry plants.airly well-established economic condition. Development of forestry plants with this system . However, few people also develop a monoculture system, especially those with large enough land and who do not depend on the ground. Building role synergy between sectors supporting the development of forestry plantations is urgently needed to increase the quantity and quality of raw materials to meet the needs of the timber industry, both locally and nationally. Three critical sectors that must synergize in supporting the development of forestry plantations by the community are research and educational institutions, the government, and the market (industry). These three sectors are expected to be able to build attractive incentives for the community so that the community continues to preserve timber plants. Research and educational institutions can provide information and technology related to efforts to increase forestry plant production. Both information and technology from social, economic, and silvicultural or cultivation aspects. Information and technology produced by these research and educational institutions can be used as input and consideration for the government in formulating programs and policies related to developing timber plantations on private land. Through the formulation of its policies and work programs, the government is expected to initiate, facilitate and assist the community in developing forestry plants. Furthermore, the market sector, especially the timber industry, must be encouraged to create a conducive post-harvest climate so that the community continues to be motivated to increase the production of raw wood materials.  
Analysis Of Saponin Content in Ruruhi Plant (Syzygium polycephalum Merr) in Kendari City, Southeast Sulawesi Wa Ode Nanang Trisna Dewi; Fitria Dewi; Ardiansyah Ardiansyah; Aswad Aswad; St. Mantasia
International Journal of Science and Environment (IJSE) Vol. 3 No. 1 (2023): February 2023
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v3i1.58

Abstract

The Ruruhi plant (Syzygium polycephalum Merr.) is a local, unique and flowering plant belonging to the Myrtaceae tribe, the guava group, which disperses by seeds. The purpose of this study was to determine the saponin content in leaf of Ruruhi plant (Syzygium polycephalum Merr.) in Kendari City, Southeast Sulawesi Province. The analysis method uses UV-Vis Spectrophotometry. The results showed that the mature leaf of the Ruruhi plant contained 0,825 mg/10 ml of saponins and 0,566 mg/10 ml of young leaf. Thus there was a difference between the saponin content in young leaf and mature leaf, respectively 0,566 mg/10 ml and 0,825 mg/10 ml.
Analysis Of Macro Nutrients Of Chicken Manure Decomposed Bytrichoderma Viridemushrooms With Different Storage Lengths Darmadi Erwin Harahap; Siti Hardianti Wahyuni; Muhammad Darwis; Muharram Fajrin Harahap; Mizan Maulana
International Journal of Science and Environment (IJSE) Vol. 3 No. 2 (2023): May 2023
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v3i1.60

Abstract

Trichoderma spp. It is an antagonistic fungus that is very important for biodiversity control. This research was conducted at the Laboratory of the Faculty of Agriculture, Universitas Graha Nusantara Padangsidimpuan, with a height of + 480 m above sea level, in August to September 2018. This study only analyzed the nutrient content contained in the finished compost consisting of five compost treatments, namely: A0 = Chicken manure decomposed by T.viride for 0 weeks, A1 = chicken manure decomposed by T. viride for 1 week, A2 = chicken manure decomposed by T. viride for 2 weeks, A3 = chicken manure decomposed by T. viride for 3 weeks, A4 = chicken manure decomposed by T. viride for 4 weeks. Of the five compost treatments then analyzed the nutrient content which includes N, P, K Total in the Laboratory of Soil Science ANDALAS Padang West Sumatra. The results showed that based on the results of laboratory analysis it can be known that compost with the addition of good trichodermaviride decomposer is good by 4 weeks of storage (A4) i.e. organic B = 45.70 %, organic C = 91.03 , Ratio C / N = 11. 13 %, N Total = 3.51 %, P Total = 3.41 % , K Total = 1.58 %.

Page 3 of 16 | Total Record : 156

 1   2   3   4   5 

Filter by Year

2021 2025


Reset
Filter By Issues
All Issue Vol. 5 No. 4 (2025): November 2025 Vol. 5 No. 3 (2025): August 2025 Vol. 5 No. 2 (2025): May 2025 Vol. 5 No. 1 (2025): February 2025 Vol. 4 No. 4 (2024): November 2024 Vol. 4 No. 3 (2024): August 2024 Vol. 4 No. 2 (2024): May 2024 Vol. 4 No. 1 (2024): February 2024 Vol. 3 No. 4 (2023): November 2023 Vol. 3 No. 3 (2023): August 2023 Vol. 3 No. 2 (2023): May 2023 Vol. 3 No. 1 (2023): February 2023 Vol. 2 No. 4 (2022): November 2022 Vol. 2 No. 3 (2022): August 2022 Vol. 2 No. 2 (2022): May 2022 Vol. 2 No. 1 (2022): February 2022 Vol. 1 No. 1 (2021): November 2021 More Issue