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INDONESIA
JURNAL PHOTON
Published by Universitas Muhammadiyah Riau
ISSN : 2087393x     EISSN : 25795953     DOI : -
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Nursing Physics
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge
Arjuna Subject : -
Articles 711 Documents
 68   69   70   71   72 
Inventory of Stingless Bees in Customary Forest of Imbo Putui, Kampar Regency, Indonesia Marsya, Yana Yunisa; Gesriantuti, Novia; Badrun, Yeeri; Syarif, Nuskan; Tas’ad, Said Faizan
Photon: Jurnal Sain dan Kesehatan Vol. 15 No. 2 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v15i2.9293

Abstract

Information on stingless bee diversity in customary forest of Imbo Putui is still lacking so there is no data of stingless bees in the forest.  The purpose of this study was to identify the species of stingless bees found in Imbo Putui customary forest. The search for stinglees bee nests was carried out using exploration method in three predetermined areas. The area was roadside (Zone I), inside the forest (Zone II), and around the river and oil palm plantation (Zone III). Data analysis was carried out quantitative descriptive. The result of the study found 7 species of stingless bees, 4 species of which with majority conservation status were found, namely Heterotrigona itama, Tetragonula laeviceps (yellow, black), Tetragonula drescheri and Tetragonilla collina. Meanwhile minority species found are Tetragonula iridepennis, Homotrigona fimbriata and Tetragonula testaceitarsis. Base on presence of 3 species that are classified as minorities found,  it can be conclude that the ecosystem of Imbo Putui customary forest is  still maintained and has not experienced significant changes.
Nut in Swiss Albino Mice Independently Assessed by the Forced Swim Test Novianty, Riryn; Yuharmen, Yuharmen; Sofyanti, Nery; Ya’la, Fitra Audhi
Photon: Jurnal Sain dan Kesehatan Vol. 15 No. 2 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v15i2.9294

Abstract

Depression is a global mental health issue and herbal antidepressants are increasingly sought due to the side effects of synthetic drugs. The present study aimed to evaluate the potential of ethyl acetate extract of old areca nut in treating depression of mice subjected to acute and sub-chronic Forced Swim Test (FST). Ethyl acetate extract was injected intraperitoneally 1 h before the FST at a dose of 50 and 100 mg/kg. The 100 mg/kg dose showed the greatest reduction in immobility time (22.29%) during acute testing. Following seven days of treatment, it was discovered that the extract significantly alleviated the immobility time in sub-chronic FST. The results of the phytochemical analysis showed that phenolics present in the ethyl acetate extract are probably active constituents with antidepressant properties. After prolonged administration, the substance has no toxic effects on the bodies of test animals.
Article Review: The Role of Botany in Forensic Investigations Afdhila, Zakia; Abid, Istiana Firqah
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 1 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v16i1.7768

Abstract

Botany is the study of plants and plant life. Forensic botany is the study of plants, their relation to law and legal issues and can be used as evidence in a case. The characteristics and parts of each plant can be used as evidence when found on the body or things related to a person or the scene of a case. Botanical evidence found at a crime scene can be used to assist the investigation process related to the relationship between the victim, the perpetrator and the scene. The evidence found can be evidence that can be seen directly and microscopic evidence that requires laboratory analysis for identification, therefore forensic botanical analysis must be carried out by experts in the field of botany. Forensic botanical evidence in an investigation can provide information related to the estimated time of death, how long the victim was buried, the cause and manner of death.
Forensic Anthropology: Morphometric Study of The Sternum Using Computed Tomography Scan to Differentiate Sex Across Various Countries (Literature Review) Toisuta, Chrisma Virginia; Abid, Istiana Firqah
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 1 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v16i1.7769

Abstract

The discovery of bodies in Indonesia is a frequent occurrence. Identifying these bodies requires determining the gender, height, and other physical characteristics to narrow down the search for the victim's identity. Computed tomography (CT) is the modality of choice for evaluating the anatomical details and pathological conditions of the sternum, sternoclavicular joints, and surrounding soft tissues. Given this issue, the researchers were interested in conducting a literature review on morphometric studies of the sternum using computed tomography scans to differentiate gender in various countries. The research method employed was descriptive observational, utilizing a literature review design from several articles published within the last 15 years. The articles selected for this study were based on specific inclusion and exclusion criteria set by the researchers. A total of 20 articles were used in this study. The literature review shows that the increasing number of morphometric studies, particularly in different populations, provides valuable data for researchers. CT can be utilized for the morphometric analysis of living subjects or discovered bones. If parts of the skeleton, such as the pelvis or skull, are not found or are damaged, forensic specialists and forensic anthropologists can accurately estimate gender using the sternum.
Physiological of Various Genotypes of Cayenne pepper (Capsicum frutescens L.) Under Heat Stress Nanda, Riri Fitria; Adiwirman, Adiwirman; Herman, Herman
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 1 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v16i1.8698

Abstract

Cayenne pepper (Capsicum frutescens L.), a member of the Solanaceae family, is vulnerable to rising temperatures caused by global warming, which may reduce productivity and impair plant growth. This study evaluated the adaptation of four cayenne pepper genotypes (Pelita, Dewata, Bara, and Taruna) to high-temperature stress under greenhouse conditions. A split-plot design was applied, with temperature regimes as the main plot, consisting of normal daily temperature and heat stress conditions (±4°C–8°C above normal temperature), while genotypes were assigned as sub-plots. Observed parameters included physiological traits, such as stomatal conductance and transpiration rate, and morphological traits, including plant height, stem diameter, flowering time, harvesting age, and fruit weight. Data were analysed using ANOVA followed by a 5% significance test. The results demonstrated that high-temperature stress significantly affected both physiological and morphological characteristics of cayenne pepper plants. Temperature stress generally reduced fruit weight compared with normal daily temperature conditions. Responses to heat stress were observed in stomatal conductance, transpiration rate, plant height, stem diameter, leaf morphology, flowering age, harvest age, and fruit yield. Among the tested genotypes, Taruna exhibited superior physiological adaptation through stable stomatal conductance, chlorophyll content, photosynthetic activity, and leaf morphology under stress conditions. However, the Dewata genotype produced the highest fruit weight per plant under elevated temperature conditions compared with Pelita, Bara, and Taruna. These findings provide valuable insights for developing cayenne pepper varieties adaptive to climate change, with emphasis on physiological stability and yield performance as key selection criteria.
Antimalarial Activity of Ugonin J and Ugonin K Isolated from Tunjuk Langit (Helminthostachys zeylanica) Alvi, Nurul Vadilla; Teruna, Hilwan Yuda; Hendra, Rudi
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 1 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v16i1.9137

Abstract

Malaria is a life-threatening disease caused by Plasmodium parasites, transmitted by Anopheles mosquitoes, and remains a significant global health issue. This study aimed to identify the antimalarial activity of ugonin J and ugonin K isolated from tunjuk langit (Helminthostachys zeylanica). The in vitro antimalarial assay was conducted using the 3D7 strain of Plasmodium falciparum, which is sensitive to chloroquine, with ugonin J and ugonin K concentrations ranging from 0.01 to 100 µg/mL. The parasitemia percentage was assessed at 48 hours post-treatment, and the percentage inhibition was calculated. The results showed a significant dose-dependent inhibition, with an IC₅₀ value of  0, 041 µg/mL and 0.12 µg/mL, indicating potent antimalarial activity. Ugonin J and ugonin K exhibited effective inhibition of parasitemia at concentrations as low as 1 µg/mL, supporting its potential as a promising antimalarial agent. This study suggests that Helminthostachys zeylanica could be a valuable source of antimalarial compounds
Synthesis and Molecular Docking Assay of 2-(3-3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl)acetohydrazide as a candidate for breast anticancer Shalihah, Putri Mar Atus; Zulmy, Winda Permata; Hendra, Rudi; Jasril, Jasril
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 1 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v16i1.9167

Abstract

Pyridazinones are a class of heterocyclic compounds with broad biological activities, one of which is as an anticancer. This study synthesized N-acetohydrazide substituted pyridazinone derivatives and evaluated their potential as breast cancer therapy through molecular docking studies. The target compound, 2-(3-(3-methoxyphenyl)-6-oxopyridazine-1(6H)-yl)acetohydrazide(3), was synthesized through three reaction steps: condensation to form the pyridqzinone core, functionalization of ethyl chloroacetate at the nitrogen position, and substitution of the ethoxy group with hydrazine hydrate. The yield obtained was 48.14%. The purity of the synthesized compound was confirmed through melting point determination and high-performance liquid chromatohraphy (HPLC) analysis, which showed a single dominant peak. Structural elucidation using Fourier-transform infrared (FTIR), mass spectrometry (MS), proton nuclear magnetic resonance (1H-NMR), and carbon-13 nuclear magnetic resonance (13C-NMR) verified the expected structure.  Molecular tethering studies against tyrosine kinase (PDB ID: 3ERT) showed that compound (3) has a binding free energy of -7.93 kcal/mol, with two hydrogen bonds formed with residues Glu353 and Leu387. These results indicate that compound (3) has not shown better inhibitory activity than tamoxifen. Nonetheless, this compound fulfils good physicochemical characteristics based on Lipinski's rule, so it remains promising for further development.
Stingless Beehive Entrance Shape and Size in the Imbo Putui Customary Forest, Kampar Regency Novia Rahman; Gesriantuti, Novia; Badrun, Yeeri; Syarif, Nuskan; Tas'ad, Said Faizan
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 1 (2025): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v16i1.10276

Abstract

Imbo Putui Customary Forest supports high biodiversity, including stingless bees; however, data regarding the specific morphology of their nest entrances in this region remain limited. This study aimed to characterize the entrance funnel length, diameter, nest height, color, shape, and nesting habitat conditions of stingless bees in Imbo Putui Forest. The study employed a survey method with purposive sampling across three zones: roadside (Zone I), forest interior (Zone II), and riparian/oil palm plantation areas (Zone III). Eight stingless bee species were identified: Heterotrigona itama, Tetragonula laeviceps (black and yellow), Tetragonilla collina, Tetragonula drescheri, Tetragonula testaceitarsis, Tetragonula iridipennis, and Homotrigona fimbriata. Nest measurements indicated funnel lengths of 1–27 cm, entrance diameters of 5–20 mm, and nest heights ranging from 1 cm to 1000 cm. Morphologically, the nest entrances were predominantly round or oval in shape, with colors consistently ranging from brownish black to grayish brown.
Optimization of Electrophotographic Toner Using Reduced Graphene Oxide and Palm Shell Carbon Aerogel Ginting, Delovita; Billah, Salsa; Fadli Syahputra, Romi
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 2 (2026): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Toner is a powdered ink used in electrophotographic printing technology. This research aims to develop an electrophotographic toner based on carbon aerogel composite of palm shell activated carbon enriched with reduced graphene oxide and polyester resin. Carbon aerogel synthesis was carried out through chemical activation and carbonization process, while toner formulation used Emulsion Aggregation (EA) method. Characterization results showed that the density of toner was 1,31 g/cm3 and toner was 0,81 g/cm3, porosity reached 88%, and the highest electrical conductivity was 18.246 μS/cm. These findings indicate that the integration of carbon aerogel and reduced graphene oxide in toner formulations results in densities close to the range of commercial toners as well as higher porosity than hydrocolloid-based toners. The toner formulation in this study has the potential to support the efficiency of toner usage and printing without reducing the quality of the printed output.
Emission Dispersion Pattern Analysis of Palm Oil Mill Boiler & Genset Chimneys Using AERMOD Nasution, Renni Wardiah; Fitri, Yulia; Retnawaty, Sri Fitria; Fatiya; Putri, Reza Pratama; Daulay, Rosni Amelia
Photon: Jurnal Sain dan Kesehatan Vol. 16 No. 2 (2026): Journal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT X is one of the palm oil mills located in the Tenayan Industrial Estate (KIT). Emission sources originate from boiler and generator stacks that produce PM, SO₂, NO₂, CO, and NOₓ. This study aims to analyze the direction of emission distribution from boiler and generator stacks using the AERMOD model. In addition, the study analyzes differences in emission distribution patterns during the dry and rainy seasons. Modeling was conducted using AERMOD by incorporating emission source parameters, meteorological data obtained from the Climate Data Store (CDS), and topographic data from Google Earth Pro. The modeling process consisted of AERMET, AERMAP, and AERMOD stages. The results indicate that the annual maximum concentrations of PM, SO₂, NO₂, CO, and NOₓ are 1,24 μg/m³, 2,17 μg/m³, 4,33 μg/m³, 0,0034 μg/m³, and 0,065 μg/m³, respectively. The annual emission distribution pattern extends toward the southwest, with seasonal variations observed between the dry and rainy seasons.

Page 71 of 72 | Total Record : 711

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