cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Irwan Effendi
Contact Email
natur@ejournal.unri.ac.id
Phone
+62811764031
Journal Mail Official
kurniawanronal09@gmail.com
Editorial Address
Kampus Bina Widya KM. 12,5 Simpang Baru, Tampan, Pekanbaru 28293 Indonesia
Location
Kota pekanbaru,
Riau
INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://doi.org/10.31258/jnat
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Natur Indonesia published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 20, No 2 (2022): Oktober 2022" : 5 Documents clear
Maintenance of Bilge Pump on Ship Trawl SPL IX Owned PT. Sinar Pesona Laut Muhammad Al Mu'Min Saridu; Boby Wisely Ziliwu
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.35-40

Abstract

A pump is a machine or device that raises liquid from a low surface to a higher surface or moves liquid from a low-pressure to a high-pressure area. A centrifugal pump is a machine or equipment used to provide energy to a fluid (liquid) based on the centrifugal force generated by a rotating impeller. So that the liquid can be moved or moved from one place to another. As it receives energy through the impeller, the fluid velocity will increase. This kinetic energy is then converted into compressive energy by the pump housing (casing) in the form of a spiral (volute) or a centrifugal pump or fixed blades (diffuser) surrounding the impeller so that the liquid exits the pump at a high speed. The maintenance method for the bilge pump auxiliary machine is carried out in 6 stages, namely, the first stage opening the filter box, the second stage removing the inner filter and filter box cover gasket, the third stage installing new anti-rust on the inside of the filter box cover, the fourth stage removing the box filter connecting faucet and the bilge pump pipeline, the fifth stage opens the connection of the pipe and the bilge pump, the sixth stage ensures that all components of the bilge pump are firmly installed and perform operational test
Response of Light Intensity to The Carotenoid Content of Sea Grape Caulerpa sp. Rina Rosnawati; Nunik Cokrowati; Nanda Diniarti
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.41-49

Abstract

Caulerpa sp. is a green alga that grows naturally in Indonesian waters. Caulerpa sp. grows in shallow seas with calm currents and attaches to coral substrates or sand substrates and rock fragments. In Indonesia, this alga is widely used as a food ingredient. Caulerpa sp.  Contains lignan which is beneficial to human health, namely its ability to prevent the growth of cancer cells. This study aims to determine the difference in the number of carotenoids in Caulerpa sp. with different light intensities using controlled containers at the Laboratory of Fish Production and Reproduction, University of Mataram. The method used was experimental with a Randomized Block Design (RAK) with 30 days of maintenance. The results showed the growth of Caulerpa sp. highest in treatment D (3 light 3000 lux) with an average absolute growth of 80 g, specific growth of 0,92 %, stolon length of 6,4 cm, and the highest carotenoid content. The lowest growth value was in treatment A (1 light 500 lux) with an absolute growth value of 35 cm, specific growth of 0,44%, stolon length of 4,6 cm, formula length 2,6 carotenoid content of 0.15 mg/g
Inhibition Zone Test of Chaetomorpha sp. Extract Against Aeromonas hydrophilla and Vibrio sp. Bacteria Sri Wahyuni; Mohamad Gazali; Ronal Kurniawan
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.50-54

Abstract

Chaetomorpha sp. is a green algae that has anti-bacterial compounds and at certain times found very much. The purpose of this study was to see the inhibition zone produced from the ethanol extract of Chaetomorpha sp. against A. hydrophilla and Vibrio sp. This research was done in March 2022. Extraction of Chaetomorpha sp., antibacterial effectiveness testing was done at the Biotechnology Laboratory, Faculty of Fisheries and Marine, Riau University. The method used is descriptive method. Sensitivity test was performed using the Kirby Bauer disc method. To reduce the error rate, it was repeated three times. The doses of macroalgae extract used were, doses of 100% (10,000 ppm), 90% (9,000 ppm), 80% (8,000 ppm), 70% (7000 ppm), 60% (6000 ppm), 50% (5000 ppm), 40 % (4000 ppm), 30% (3000 ppm), 20% (2000 ppm), 10% (1000 ppm) and control (Oxytetracycline). Based on the observations, it was found that the use of ethanol extract of Chaetomorpha sp. The result is able to inhibit the growth of bacteria A. hydrophilla and Vibrio sp. at the highest dose (10000 ppm) in an range of 13.5 -14.5 mm which was classified as strong category, the lowest dose was at 5000 ppm as moderate category.
The Effects of Turmeric Powder Addition in Fish Feed toward Hematology of Common Carp (Cyprinus carpio) Putri Pridayem; Windarti Windarti; Dian Fitria M
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.55-63

Abstract

Turmeric (Curcuma longa) contains curcumin that can be used to improve the health as well as the immune system of the fish. The health and immune system condition of the fish can be predicted based on the hematology of the fish. A study that aims to understand the effects of turmeric addition in fish feed pellets on the hematology condition of common carp has been conducted from March to May 2022. The turmeric powder was mixed well with the feed pellets and the dosages of the turmeric powder were as follows: 0 (Control, no turmeric addition), P1 (0.5 g/kg), P2 (1 g/kg), and P3 (1.5 g/kg). The fish was reared in circular plastic containers (25 L), completed with an aerator and circulation pump) for  49 days, 15 fish/ container. During the research, the fish was fed 3 times/ day, at satiation. Samplings were conducted 2 times before the treatment was applied and by the end of the experiment (the 49th day). Results show that the addition of turmeric powder in the fish feed pellets clearly affects the hematological of the fish. Fish that was fed with turmeric-enriched pellets showed a higher percentage of lymphocyte and which means that the immunity of the fish is improved. The best treatment P3 showed 81.55% lymphocyte, 6.55% monocyte, 5.44% neutrophil, and 5.44% thrombocyte. Data obtained indicate that the fish fed with turmeric pellets perform better in hematological conditions than the fish with no turmeric-enriched pellets.
Histopathology of the Gill of Pangasianodon hypophthalmus that were Fed with Fermented Red Ginger to Prevent Motile Aeromonas Septiceamia Disease Muhammad Arga Saputra; Morina Riauwaty; Henni Syawal
Jurnal Natur Indonesia Vol 20, No 2 (2022): Oktober 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.20.2.64-72

Abstract

Red ginger is a natural ingredient that contains several antibacterial compounds such as essential oils, flavonoids, terpenoids, phenols, and zingiberene. This research was conducted from June to August 2021. The purpose of this study was to analyze the structure of the gill and liver tissue of jambal siam fish and to obtain the best dose of adding fermented red ginger to the feed before and after being challenged with Aeromonas hydrophila bacteria. The method used is an experimental method using a one-factor Completely Randomized Design (CRD) with five treatment levels and three replications, namely: Feeding without fermentation of red ginger and without being tested against A. hydrophila (Kn), Feeding without fermentation of red ginger and tested against A. hydrophila (Kp), Feeding with a dose of 150 mL/kg (P1), dose 175 mL/kg feed (P2), dose 200 mL/kg (P3). The results showed that the structure of the gill tissue of Jambal Siam fish showed damage such as hypertrophy, hyperplasia and bent lamellae. The best results were found in the P2 treatment, a  dose of 175 mL/kg feed and tested against A.hydrophilla bacteria

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2022 2022


Reset
Filter By Issues
All Issue Vol. 22 No. 2 (2024): October Vol. 22 No. 1 (2024): April Vol 21, No 1 (2023): April 2023 Vol 21, No 2 (2023): October Vol. 21 No. 2 (2023): October Vol. 21 No. 1 (2023): April Vol 20, No 2 (2022): Oktober 2022 Vol 20, No 1 (2022): April 2022 Vol 19, No 2 (2021): Oktober 2021 Vol. 20 No. 2 (2022): October Vol. 20 No. 1 (2022): April Vol 19, No 1 (2021): April 2021 Vol. 19 No. 2 (2021): October Vol. 19 No. 1 (2021): April Vol 18, No 2 (2020): oktober Vol 18, No 1 (2020) Vol 17, No 2 (2019) Vol 17, No 1 (2016) Vol 16, No 2 (2016) Vol 16, No 1 (2014) Vol 15, No 2 (2013) Vol 15, No 1 (2013) Vol 14, No 3 (2012) Vol 14, No 1 (2012) Vol 14, No 1 (2011) Vol 13, No 3 (2011) Vol 13, No 2 (2011) Vol 13, No 1 (2010) Vol 12, No 2 (2010) Vol 12, No 1 (2009) Vol 11, No 2 (2009) Vol 11, No 1 (2008) Vol 10, No 2 (2008) Vol 10, No 1 (2007) More Issue