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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 5 Documents
 1 
Search results for , issue "Vol. 2 No. 1 (2022): February 2022" : 5 Documents clear
Analysis Of The Density Of Coliform Bacteria As An Indicator Of Pollutant In The River Aek Katia Labuhan Batu District Arman Harahap; Bitondo Dieudonne; Harahap, P
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.589 KB)

Abstract

Coliform bacteria is a one of a kind negative bacteria commonly found in the river aek katia in kabupaten labuhanbatu, the presence of coliform bacteria can be an indicator of biology that is important to know the environmental conditions. This study aims to determine the environmental conditions based on biological indicators in the form of an abundance of coliform bacteria in the river Aek Katia Kabupaten Labuhanbatu. The main ingredient in this study is the river water and sediment. The results obtained are still below the quality standard so that the river aek katia in good condition biologically. The presence of coliform bacteria in the river can affect human and biota. So it needs to be considered in the efforts of the management of the environment of the community , especially in an effort to maintain the sustainability of fisheries resources.
Temperature And Humidity Optimization To Add Save Life Strawberry (Fragaria chiloensis, L.) Kartika
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (518.308 KB) | DOI: 10.51601/ijse.v2i1.11

Abstract

This study aims to determine the appropriate temperature and humidity in the storage of strawberries, this research was carried out using 3 humidity treatments and 3 temperatures, namely humidity 65%, 75%, and 85% with a temperature of 10 oC, 15 oC, and room temperature, fruit fruit stored at room temperature lasts up to 3 days, while at 10 oC the fruit with 65% humidity treatment lasts up to 6 days, with 75% humidity for 6 days and with 85 % humidity it lasts for 7 days, at 15 oC the fruit with 65% humidity treatment lasts 5 days, with 75% humidity for 5 days and with 85% humidity lasts for 6 days, so based on research that has been done it is known that 85% humidity treatment with a temperature of 10 oC is the right storage for strawberries. The longest shelf life of strawberries is with a humidity treatment of 85% which is stored at 10 oC, which can extend the shelf life of 4 days longer when compared to storage at room temperature.
Toxicity Test of Catharanthus roseus Flower Extract with Brine Shrimp Lethality Test Method Melia Sari; Chemayanti Surbakti; Tetty Noverita Khairani; Willy Novita Sari; Gabriella Septiani Nasution
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.402 KB) | DOI: 10.51601/ijse.v2i1.12

Abstract

Tapak dara (Catharanthus roseus) is a plant belonging to the Apocynaceae family originating from Central America and is generally grown as an ornamental plant. The purpose of this study was to determine the percentage of mortality data and the LC50 value of tapak dara methanol extract (Catharanthus roseus) against Artemia salina Leach larvae using the Brine Shrimp Lethality Test (BSLT) method. The BSLT method used consisted of 6 concentration treatments, namely 20 ppm, 60 ppm, 100 ppm, 140 ppm, 180 ppm, and 0 ppm a negative control, each of which was repeated three times. At each concentration, 10 experimental animals of 48 hours old Artemia salina Leach larvae were used. The toxic effect of the extract was identified by the percentage of mortality of Artemia salina Leach larvae using probit analysis (LC50). The results showed the linear regression equation y = 3.0809x – 12.065. This shows that the mortality of the test animals reached 50% when the compound concentration reached 34,599 ppm. Based on the toxicity test of the methanol extract of the tapak dara flower (Catharanthus roseus) using the Brine Shrimp Lethality Test (BSLT) method, in this study it was toxic because LC50>1000 ppm so it has potential as an anticancer.
Forecasting of The Crime Rate Using Automatic Clustering and Fuzzy Logic Relationship Method In North Sumatra Elsyah Suhadiyah; Sajaratud Dur; Hendra Cipta
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.313 KB) | DOI: 10.51601/ijse.v2i1.14

Abstract

Currently the crime rate is very alarming and reported in various mass and electronic media. The high crime rate in the Province of Nort Sumatra is very unsettling for the community. The purpose of this research is to get the result of forecasting the crime ratel in the 2021 - 2024 using Automatic Clustering And Fuzzy Logic Relationship (ACFLR) method. The advantage of this method is that the method has a high level of accuracy because the Mean Absolute Percentage Error (MAPE) value is relative small and the results of forecasting analysis obtained in 2021 there are 31522 cases, in 2022 are 31533 cases, in 2023 are 31574 cases and the last one in 2024 was 31602 cases. In addition, the prediction error rate MAPE obtained is 0,35 % Keywords: Crime rate, Automatic Clustering And Fuzzy Logic Relationship.
Potential Plants Developed With Agroforestry System For Forest Land Rehabilitation In East Java Indah Rekyani Puspitawati; Anang Susanto
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.839 KB) | DOI: 10.51601/ijse.v2i1.15

Abstract

Activity the clearing of forest areas and the construction of canals in forest areas, causing a drastic decrease in the forest ground water level and forest depth and causing serious impacts on the ecosystem cycle. the system that will be applied will, of course, be closely related to the interests of the owner of land that expects benefits from the rehabilitation activities carried out. This study aims to provide information about the types of plants that have economic value for the community, according to the extreme nature of forest land, and can be mixed with short-lived plants. Several locations showed survival rates above 75%. There were several types of plants, Albizzia,Tectona, Delbegia, Dipterocarpus, and Gmelina, which were recorded to provide good growth values. The role of the community is needed to the maximum in the efforts to rehabilitate forest land, especially in the area of ​​rights and forest land managed by the community and protected/conservation areas where the community has access to it. Agroforestry has excellent potential to be applied on forest slopes. The application of agroforestry on forest slopes opens new paths for more efficient use of forest slopes with more varied results while considering the aspect of sustainability (conservation). The results of observations made in community gardens and forest lands used by the community and literature review on trials of planting plants for rehabilitation and commodity plants that are economically beneficial to the community, it is known that there are at least ten types of plants.

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