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Vegetation analysis and plant diversity in Pinus Jantho Forest (PJF) nature reserve, Aceh Besar HILMINA ITAWAMERNI; SAIDA RASNOVI; ZUMAIDAR ZUMAIDAR
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Pinus Jantho Forest (PJF) Nature Reserve has unique characteristics and distinctive ecosystem that plays an important role in the preservation of germplasm and the protection of natural resources. The sustainability of the PJF Nature Reserve is strongly determined by vegetation of its constituents. Therefore, an effort is needed to help its management properly, one of which is by knowing the diversity of plants that make up the community in PJF Nature Reserve. The purpose of this research is to analyze the composition and diversity of plant species in PJF Nature Reserve. Data collection and sampling were done using multiple square method. The plots were laid out by systematic sampling. PJF Nature Reserve composed of 111 species from 46 family. The seedling and understorey have the highest number individuals (1028 in total). Then there are 240 individuals at sapling level, 108 individuals at pole, and 72 individuals for tree. The Euphorbiaceae family has the largest number of species (11 species). The highest Important Value Index (IVI) for seedlings and understorey, sapling and pole, and tree respectively were Chloranthus elatior (11.09%), Piper aduncum (21.90% and 19.32%), and Pinus merkusii (25.52%). The Diversity Index indicates a high level of plant species diversity (3.25-3.63).

Yield potential and resistance of corn (Zea mays L.) S5 generation SITI HAFSAH; BAKHTIAR BAKHTIAR; NUR ROSLINI; FIRDAUS FIRDAUS
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

. Maize S5 generation was obtained and assembled through open pollination, from its parents possessing high yield potential and resistant to downy mildew disease, where the parents were obtained through mass selection. The objective of this research was to evaluate the yield potential and resistance of maize S5 generation against downy mildew disease. The research was conducted at Syngenta Seed Indonesia, Kediri Field Station, Kedungmalang Village, Papat District, Kediri Regency, East Java, from May to October 2019. The research was employed Randomized Block Design (RBD) non Factorial with the only factor observed, 24 genotypes of maize, 5 genotypes for disease resistance assay and 4 genotypes for yield potential assay with 2 replications. The results showed that there were 5 resistant genotypes, 18ID010125, 18ID010141, 18ID010158, 18ID010134, 18ID010118 and 18ID010122 and 7 potential genotypes to have high yield, 18ID010144, 18ID010123, 18ID006020, 18ID010135, 18ID010125, 18ID007419 and 18ID010148. The results also exhibited 3 genotypes with the highest yield and possessed high resistance against downy mildew (18ID010125, 18ID010123 and 18ID010148).

The potential of silver nanoparticles to control Rhizoctonia solani (AG3-PT) growth in vitro HARTATI OKTARINA; JAMES WOODHALL; IAN SINGLETON
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Silver nanoparticles (AgNPs) have known anti-microbial properties and therefore have the potential to be used to control fungal plant pathogens. In this study we investigated the growth of a plant pathogenic fungus, Rhizoctonia solani (AG3-PT) in the presence of AgNPs. The effect of AgNPs at two different levels (20 and 50 mg L-1) on hyphal growth and sclerotium production and viability in R. solani was investigated. The results showed that at 20 mg AgNPs L-1 R. solani hyphal growth was reduced along with the production of sclerotia. The results indicate that AgNPs have the potential to control R. solani growth and subsequent development of plant disease symptoms.

Non-perfect maze generation using Kruskal algorithm MAHYUS IHSAN; DEDI SUHAIMI; MARWAN RAMLI; SYARIFAH MEURAH YUNI; IKHSAN MAULIDI
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

A non-perfect maze is a maze that contains loop or cycle and has no isolated cell. A non-perfect maze is an alternative to obtain a maze that cannot be satisfied by perfect maze. This paper discusses non-perfect maze generation with two kind of biases, that is, horizontal and vertical wall bias and cycle bias. In this research, a maze is modeled as a graph in order to generate non-perfect maze using Kruskal algorithm modifications. The modified Kruskal algorithm used Fisher Yates algorithm to obtain a random edge sequence and disjoint set data structure to reduce process time of the algorithm. The modification mentioned above are adding edges randomly while taking account of the edge’s orientation, and by adding additional edges after spanning tree is formed. The algorithm designed in this research constructs an non-perfect maze with complexity of where and denote vertex and edge set of an grid graph, respectively. Several biased non-perfect mazes were shown in this research by varying its dimension, wall bias and cycle bias.

Utilization of Asteraceae family as medicinal plant by local community of hutan pinus Jantho nature reserve, Aceh Besar LIZA FADHILLAH; SAIDA RASNOVI; ZAIRIN THOMY
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

The use of medicinal plants by local communities is an ethnobotany study that links the culture of the community with the resources of plants that are around it. A study on the utilization of medicinal plants in the Hutan Pinus Jantho Nature Reserve was conducted with the aim of obtaining information about the types of medicinal plants used by local communities around Hutan Pinus Jantho Nature Reserve. This study applies the Participatory Rural Appraisal (PRA) method for interviews conducted by Purposive Sampling. The parameters measured are; parts of medicinal plants used, method of processing, method of use, and location of the collection. According to interview, it found about 10 species of Asteraceae those have medical potential, 3 of them already use by the local community of CAHPJ, these are Blumea balsamifera L., Chromolaena odorata L., and Tagetes erecta L., these species could cure the wound, heal the cold, fever, stomachache and other diseases.

Development of Fourier transform infrared spectrophotometric method for identification and determination of marketed metamizole tablet preparation NERDY NERDY; EFFENDY DE LUX PUTRA; NILSYA FEBRIKA ZEBUA; CHRISTICA ILSANNA SURBAKTI; JIHAN SAFIRA
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Metamizole is a nonsteroidal antiinflammatory drug (NSAID) that functions as an analgesic, antipyretic, and antiinflammatory. Examination of active substance contents is a requirement that must be met to ensure the quality of drug preparations. The aims of this study were to develop and validate the Fourier Transform Infrared spectrophotometric method for the quantitation of metamizole content in marketed tablet preparation. Identification and determination of metamizole contents by Fourier Transform Infrared spectrophotometric method used methanol solvent in the wavenumber range 4000 cm–1 to 650 cm–1. The results showed that the specific wavenumbers of metamizole were 1649.3 cm–1; 1623.3 cm–1; and 1589.7 cm–1; and the contents metamizole in marketed tablet preparation ranged from (97.954 ± 0.121)% to (104.541 ± 0.257)%. From the validation method, the recovery result is 100.129%; the relative standard deviation is 0.057%; the limit of detection is 2.09526 mg/mL; the limit of quantitation is 6.34928 mg/mL; and the range 40 mg/mL to 60 mg/mL. The quantitation of metamizole contents can be carried out by Fourier Transform Infrared spectrophotometric method with accurate and precise quantitation results.

Analysis of radon concentration and gamma dose rate in residential houses of Ambon and Seram Islands, Maluku WAHYUDI WAHYUDI; ILMA DWI WINARNI; MUJI WIYONO; KUSDIANA KUSDIANA
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Radon concentration analysis in the residential houses on Ambon and Seram Island - Maluku through the passive method using the CR-39 nuclear track detector has been studied. The CR-39 nuclear track detector was installed inside the residential houses for 3 months. After finishing the exposure, the detector was taken and etched using 6.25 N NaOH solution. The nuclear track of radon in the CR-39 was read by a microscope with 400 times magnification. From the results of reading the track, determination of radon concentration in the houses was calculated. The results of the analysis showed that radon concentrations in the residential houses of Ambon and Seram Islands, Maluku at the low level were in the range of 2.56 ± 0.18 Bq/m3 to 59.65 ± 4.22Bq/m3 with an average value of 28.42 ± 1.98 Bq/m3. The average concentration of radon is still below the average radon concentration in the world of 50 Bq/m3. The value of dose received by the population due to exposure of radon and gamma radiation in the range of 0.90-1.44 mSv/year. There is a positive correlation between radon concentration value and total radiation doses received by the population for a year. This data can be used in the study of radiation safety for the Ministry of Health and as a contribution to Indonesia in the international community about monitoring environmental radiation from radon concentrations in residential houses

Factors that influence the recovery of TB patients using Cox proportional hazard regression ZURNILA MARLI KESUMA; HIZIR SOFYAN; LATIFAH RAHAYU; WARDATUL JANNAH
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Tuberculosis (TB) is an infectious disease which is one of the biggest health problems in the world, including Indonesia. The government, through the National Tuberculosis Control program, has made various efforts to control tuberculosis. However, this problem was exacerbated by the dramatic increase in the incidence of tuberculosis. This study aimed to determine the Cox proportional hazard regression model and the factors that affect the cure rate of TB patients. We used medical record data for inpatient TB patients for the period July-December 2017 at dr. Zainoel Abidin Hospital. The results showed that with α = 0.1, the factors that influenced the recovery of TB patients were the type of cough, the symptoms of bloody cough and symptoms of sweating at night. There were 33.93% of patients who did not work. This category included students, domestic helpers, and those who did not work until they suffered from tuberculosis and were treated at dr. Zainoel Abidin Hospital. The hazard ratio (failure ratio) showed that the tendency or cure rate for TB patients who did not experience cough symptoms was 70% greater than patients who experienced phlegm cough symptoms. The cure rate for TB patients who experienced coughing up blood symptoms was 53% greater than patients without these symptoms. The cure rate for TB patients who experienced symptoms of sweating at night was 54% greater than patients who did not sweat at night.

Analysis of radon concentration and gamma dose rate in residential houses of Ambon and Seram Islands, Maluku WAHYUDI WAHYUDI; ILMA DWI WINARNI; MUJI WIYONO; KUSDIANA KUSDIANA
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v21i1.18140

Radon concentration analysis in the residential houses on Ambon and Seram Island - Maluku through the passive method using the CR-39 nuclear track detector has been studied. The CR-39 nuclear track detector was installed inside the residential houses for 3 months. After finishing the exposure, the detector was taken and etched using 6.25 N NaOH solution. The nuclear track of radon in the CR-39 was read by a microscope with 400 times magnification. From the results of reading the track, determination of radon concentration in the houses was calculated. The results of the analysis showed that radon concentrations in the residential houses of Ambon and Seram Islands, Maluku at the low level were in the range of 2.56 ± 0.18 Bq/m3 to 59.65 ± 4.22Bq/m3 with an average value of 28.42 ± 1.98 Bq/m3. The average concentration of radon is still below the average radon concentration in the world of 50 Bq/m3. The value of dose received by the population due to exposure of radon and gamma radiation in the range of 0.90-1.44 mSv/year. There is a positive correlation between radon concentration value and total radiation doses received by the population for a year. This data can be used in the study of radiation safety for the Ministry of Health and as a contribution to Indonesia in the international community about monitoring environmental radiation from radon concentrations in residential houses

Factors that influence the recovery of TB patients using Cox proportional hazard regression ZURNILA MARLI KESUMA; HIZIR SOFYAN; LATIFAH RAHAYU; WARDATUL JANNAH
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v21i1.18717

Tuberculosis (TB) is an infectious disease which is one of the biggest health problems in the world, including Indonesia. The government, through the National Tuberculosis Control program, has made various efforts to control tuberculosis. However, this problem was exacerbated by the dramatic increase in the incidence of tuberculosis. This study aimed to determine the Cox proportional hazard regression model and the factors that affect the cure rate of TB patients. We used medical record data for inpatient TB patients for the period July-December 2017 at dr. Zainoel Abidin Hospital. The results showed that with α = 0.1, the factors that influenced the recovery of TB patients were the type of cough, the symptoms of bloody cough and symptoms of sweating at night. There were 33.93% of patients who did not work. This category included students, domestic helpers, and those who did not work until they suffered from tuberculosis and were treated at dr. Zainoel Abidin Hospital. The hazard ratio (failure ratio) showed that the tendency or cure rate for TB patients who did not experience cough symptoms was 70% greater than patients who experienced phlegm cough symptoms. The cure rate for TB patients who experienced coughing up blood symptoms was 53% greater than patients without these symptoms. The cure rate for TB patients who experienced symptoms of sweating at night was 54% greater than patients who did not sweat at night.

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Kab. aceh besar,

Aceh

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Suhartono

Contact Email suhartono@usk.ac.id

Phone -

Journal Mail Official jurnal.natural@fmipa.unsyiah.ac.id

Editorial Address Block A 2nd Floor FMIPA USK Jl. Tegk. Syech Abdurrauf No. 3, Banda Aceh, 23111, Indonesia

Location Kab. aceh besar, Aceh INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Suhartono

Contact Email
suhartono@usk.ac.id

Phone
-

Journal Mail Official
jurnal.natural@fmipa.unsyiah.ac.id

Editorial Address
Block A 2nd Floor FMIPA USK Jl. Tegk. Syech Abdurrauf No. 3, Banda Aceh, 23111, Indonesia

Location
Kab. aceh besar,

Aceh

INDONESIA