cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Teuku Rizky Noviandy
Contact Email
trizkynoviandy@gmail.com
Phone
+6282275731976
Journal Mail Official
editorial-office@heca-analitika.com
Editorial Address
Jl. Makam T. Nyak Arief Kompleks BUPERTA Blok L7B, Lamgapang, Aceh Besar, Provinsi Aceh
Location
Kab. aceh besar,
Aceh
INDONESIA
Heca Journal of Applied Sciences
Published by PT. Heca Sentra Analitika
ISSN : -     EISSN : 29879663     DOI : https://doi.org/10.60084/hjas
Core Subject : Health, Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Engineering Health Professions Medicine & Pharmacology
Heca Journal of Applied Sciences is a premier international scientific journal that publishes high quality original research articles, review articles, and case reports in the field of applied sciences. The journal mission is to encourage interdisciplinary research, promote knowledge sharing, and advance the development and application of innovative strategies. Heca Journal of Applied Scien is committed to excellence, relevance, and impact and provides a valuable resource for researchers, practitioners, and academics worldwide. Topics of this journal includes, but not limited to: Mathematics, Physics, Chemistry, Biology, Pharmacy, Informatics, Statistics, Marine Sciences, Fisheries Sciences, Veterinary Sciences, Medical Sciences, Nursing Sciences, Dentistry, Disaster Sciences, Environmental Sciences, Materials Science, Earth Sciences, Enviromental Sciences, Engineering, and Interdisciplinary research in the field of applied sciences.
Arjuna Subject : Umum - Umum
Articles 5 Documents
 1 
Search results for , issue "Vol. 1 No. 2 (2023): October 2023" : 5 Documents clear
Characterizing the Size Distribution of Silver Nanoparticles Biofabricated Using Calotropis gigantea from Geothermal Zone Pati Kemala; Khairan Khairan; Muliadi Ramli; Ghazi Mauer Idroes; Erisna Mirda; Diana Setya Ningsih; Trina Ekawati Tallei; Rinaldi Idroes
Heca Journal of Applied Sciences Vol. 1 No. 2 (2023): October 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v1i2.21

Abstract

This research aims to synthesize silver nanoparticles (AgNPs) using an aqueous leaf extract of Calotropis gigantea obtained from the geothermal manifestation Ie Seu-Um, Aceh Besar, Aceh Province, Indonesia. The C. gigantea leaf extract was mixed with AgNO3 solutions at concentrations of 2, 5, and 9 mM, respectively. The mixture was stirred at 80 rpm by a magnetic stirrer for 48 hours in the dark. The change in solution color indicated the reduction of Ag+ to Ag0. The resulting AgNPs synthesized using C. gigantea leaf extract (AgNPs-LCg) exhibited cloudy grey, reddish dark brown, and light brown colors when synthesized with AgNO3 concentrations of 2, 5, and 9 mM, respectively. The particle sizes of AgNPs-LCg had maximum frequencies at 246.98 nm (synthesized using AgNO3 2 mM), 93.02 nm (synthesized using AgNO3 5 mM), and 171.25 nm (synthesized using AgNO3 9 mM). The zeta potential values of AgNPs-LCg using 2, 5, and 9 mM AgNO3 were -41.9, -40.1, and -31.4 mV, respectively. Based on the solution color, nanoparticle size, and stability value of AgNPs, it can be concluded that the use of AgNO3 at 5 mM is optimal for the green synthesis process of AgNPs-LCg.
A Review on Mitochondrial Genome of Ants (Hymenoptera: Formicidae) Beivy Jonathan Kolondam; Trina Ekawati Tallei; Roni Koneri; Abdul Hawil Abas; Juliet Merry Eva Mamahit
Heca Journal of Applied Sciences Vol. 1 No. 2 (2023): October 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v1i2.74

Abstract

Ants, which are members of the Formicidae family, have been the subject of considerable scientific scrutiny due to their remarkable diversity and ecological importance. Extensive research endeavors have been directed towards understanding the complex behaviors and ecological responsibilities exhibited by these organisms. The advent of cutting-edge sequencing technology in recent times has sparked a significant breakthrough in the deciphering of mitochondrial genomes in many animals, including ants. The objective of this review paper is to provide an informative summary of the mitochondrial DNA of ants. Exploring the intricate structural aspects, we investigate the genetic diversity that exists in the mitochondrial genomes of ants. The investigation of evolutionary processes provides insight into the complex alterations that have shaped genomes throughout time. The broader ramifications of these genetic differences for the fields of ant biology and conservation are thoroughly considered. An examination is conducted on the structural characteristics, genetic variations, and evolutionary features of ant mitochondrial genomes, along with an investigation into their physiological impacts. As the molecular complexities of ant mitochondrial genomes are revealed, there is an opportunity to further explore their realm, leading to a more comprehensive comprehension of these extraordinary organisms.
Evaluation of Gradient Boosted Classifier in Atopic Dermatitis Severity Score Classification Rivansyah Suhendra; Suryadi Suryadi; Noviana Husdayanti; Aga Maulana; Teuku Rizky Noviandy; Novi Reandy Sasmita; Muhammad Subianto; Nanda Earlia; Nurdjannah Jane Niode; Rinaldi Idroes
Heca Journal of Applied Sciences Vol. 1 No. 2 (2023): October 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v1i2.85

Abstract

This study investigates the application of the Gradient Boosting machine learning technique to enhance the classification of Atopic Dermatitis (AD) skin disease images, reducing the potential for manual classification errors. AD, also known as eczema, is a common and chronic inflammatory skin condition characterized by pruritus (itching), erythema (redness), and often lichenification (thickening of the skin). AD affects individuals of all ages and significantly impacts their quality of life. Accurate and efficient diagnostic tools are crucial for the timely management of AD. To address this need, our research encompasses a multi-step approach involving data preprocessing, feature extraction using various color spaces and evaluating classification outcomes through Gradient Boosting. The results demonstrate an accuracy of 93.14%. This study contributes to the field of dermatology by providing a robust and reliable tool to support dermatologists in identifying AD skin disease, facilitating timely intervention and improved patient care.
Chemometric Classification Model for Assessing Chemical Composition Alterations in Patchouli Oil Post Zeolite Adsorption Elly Sufriadi; Hesti Meilina; Agus Munawar; Abdelrahman O. Ezzat; Rinaldi Idroes
Heca Journal of Applied Sciences Vol. 1 No. 2 (2023): October 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v1i2.86

Abstract

Various studies and applied processing by businesses have been done to improve the quality of Patchouli oil (PO), such as improving appearance, reducing heavy metal content, reducing acid numbers, and increasing the ratio of Patchouli alcohol (one of the active components of PO). However, this disregards the possibility of chemical composition change which will alter the original character of the PO. This study aims to identify the slightest shift in chemical composition from adding zeolite adsorbent into the PO. The classification model was built using Fourier transform infrared (FT-IR) spectra combined with chemometrics. The used FT-IR spectra for observation are 4000-500 cm-1 using Principal Component Analysis (PCA) and Partial Least Square-Discriminant Analysis (PLS-DA). The PO samples were from five points in Gayo Lues Regency, Province of Aceh, Indonesia, with PO added with zeolite at a ratio of 0.5%, 1.0%, 1.5%, 2.0%, and 2.5% (w/v) respectively. The classification model used in this study was able to classify between PO and PO added with zeolite at each level of the ratio. Prediction with deviation and Inlier vs. Hotelling’s T2 tests provide definitive information, with the results shown by the confusion matrix.
A Comparative Study of Total Tannin Contents and Antimicrobial Activities in Methanol Extracts of Rhizophoraceae Species Indriaty Indriaty; Binawati Ginting; Kartini Hasballah; Djufri Djufri
Heca Journal of Applied Sciences Vol. 1 No. 2 (2023): October 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v1i2.89

Abstract

Rhizophoraceae is a large true mangrove family that produces mangrove tannins. Tannins have the potential to be used as antimutagenic, anticancer, antimicrobial, and antioxidant agents in the pharmaceutical and medical fields. The aim of the research was to determine the total tannin content, antimicrobial activity, and the correlation between the two in methanol extracts of four plant parts (roots, bark, leaves, and fruit/hypocotyl) from five Rhizophoraceae species, namely Bruguiera cylindrica, Bruguiera gymnorrhiza, Ceriops decandra, Rhizophora apiculata, and Rhizophora mucronata originating from the Langsa mangrove forest, Aceh, Indonesia. Folin Ciocalteu colorimetric method and tannic acid as a standard were used for the total tannin content (TTC) test. The disc diffusion method was used to conduct antimicrobial tests against Escherichia coli, Staphylococcus aureus, and Candida albicans bacteria at a 50% extract concentration. TTC content in Rhizophoraceae ranged from 8.17 ± 1.36 mg TAE/g to 813.35 ± 18.72 mg TAE/g (p < 0.05). The highest levels were found in C. decandra roots (813.35 ±18.72 mg TAE/g), C. decandra bark (704.36 ± 12.11 mg TAE/g), and R. apiculata bark (651.23 ± 2.36 mg TAE/g). The extract has moderate to strong antibacterial activity against gram-positive bacteria S. aureus, with an inhibition zone range of 6.64 ± 0.80 mm -15.02 ± 0.32 mm. The highest antibacterial activity was observed in the inhibition zones for S. aureus bacteria, with C. decandra fruit extract (15.02 ± 0.32 mm), R. apiculata bark (14.78 ± 0.90 mm), and C. decandra leaves (14.44 ± 1.18 mm) exhibiting the highest levels. TTC and antibacterial activity of S. aureus in Rhizophoraceae extracts showed a moderate correlation (Pearson correlation coefficient r = 0.566, p < 0.05). According to the results, it was concluded that Rhizophoraceae has the potential to produce optimal tannins that can be used as antibacterial agents against S. aureus.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2023 2023


Reset
Filter By Issues
All Issue Vol. 1 No. 2 (2023): October 2023 Vol. 1 No. 1 (2023): June 2023