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INDONESIA
Indonesian Journal of Applied Science and Technology
Published by Indonesian Publication Center
ISSN : 27213358     EISSN : 27213331     DOI : -
Core Subject : Health, Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering Public Health Other
Indonesian Journal of Applied Science and Technology (IJAST) adalah wadah publikasi ilmiah yang berfokus pada penyebarluasan hasil penelitian dan pemikiran inovatif di bidang sains terapan, teknologi, dan informasi. Jurnal ini ditujukan bagi mahasiswa, guru, dosen, praktisi, maupun peneliti untuk mendiseminasikan temuan mereka kepada masyarakat ilmiah secara luas. Focus and Scope IJAST menerima naskah dalam bentuk artikel hasil penelitian (original research) maupun artikel tinjauan pustaka (review article) yang mencakup, namun tidak terbatas pada, bidang-bidang berikut: Pendidikan & Sains Dasar: Pendidikan IPA, Matematika, dan Ilmu Pengetahuan Alam (IPA). Teknologi & Rekayasa: Teknik (Sipil, Elektro, Mesin, dll.) dan Teknologi Pangan. Teknologi Informasi: Ilmu Komputer, Sistem Informasi, dan Teknologi Informasi Terapan. Ilmu Hayati & Lingkungan: Pertanian, Peternakan, Perikanan, dan Kelautan. Kesehatan: Keperawatan, Kebidanan, Kesehatan Masyarakat, dan bidang kesehatan terkait lainnya. Peer Review Process Setiap artikel yang dikirimkan ke IJAST akan melalui proses Peer Review. Tim reviewer akan mengevaluasi naskah berdasarkan kualitas metodologi, orisinalitas temuan, dan kontribusinya terhadap perkembangan ilmu pengetahuan. Penulis diwajibkan melakukan registrasi dan mengirimkan artikel secara mandiri melalui sistem OJS jurnal. Open Access Policy IJAST berkomitmen pada prinsip bahwa akses terbuka terhadap hasil penelitian akan mendukung pertukaran pengetahuan global yang lebih besar. Seluruh artikel yang diterima akan dipublikasikan secara Open Access dan tersedia secara bebas untuk dibaca atau diunduh oleh publik di bawah lisensi: Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0). Publication Frequency IJAST mulai terbit sejak tahun 2020. Sejak tahun 2022, jurnal ini berkomitmen untuk terbit dua kali dalam setahun (dua edisi per volume) pada periode: Edisi Januari-Juni dan Edisi Juli-Desember.
Arjuna Subject : Umum - Umum
Articles 62 Documents
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Optimalisasi Pelayanan Pengisian Bahan Bakar Menggunakan Simulasi Monte Carlo Pada SPBU di Kota Mataram
Indonesian Journal of Applied Science and Technology Vol. 1 No. 4 (2020): Edisi Desember 2020
Publisher : Indonesian

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Abstract

Good quality service for refueling fuel oil (BBM) at gas stations was vital for today's society. However, the service quality at gas stations has not been known until now. One of the gas stations that were strategic in Mataram city, namely SPBU 54.832.03 on Jl. Majapahit Pagesangan. One of the factors affecting the quality of gas station services is the availability of the number of dispensers that services customer at the gas station. Therefore, the research of the optimal gas station service's optimal condition was based on the number of dispensers of fuel. We use the distribution of arrival times of customers and service times at the gas stations. On the observation, we use two kinds of fuel dispensers, namely the dispenser of Premium and Pertalite for the motorcycle. The Monte Carlo simulation method shows that the optimal number of dispensers for the SPBU is three nozzles for Premium dispensers and 4 for Pertalite Motorcycle dispensers.
Motilitas, Viabilitas, dan Morfologi Spermatozoa Ayam Bangkok dengan Pengencer Dextrose dan Nacl Fisiologis 10% Pada Penyimpanan Suhu 5``C dan 26C Kudratullah Kudratullah; Adji Santoso Sudrajat
Indonesian Journal of Applied Science and Technology Vol. 2 No. 1 (2021): Edisi Maret 2021
Publisher : Indonesian

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Abstract

This study aims to determine the effect of Dextros 10% diluent and physiological NaCl on the quality of Bangkok chicken spermatozoa on spermatozoa motility, viability and abnormality at 50C and 260C. The research method used a completely randomized design (CRD) with 4 treatments, each consisting of 7 replications. The materials used were 4 male Bangkok chickens aged ± 2 years, 1 female. The variables observed included motility, viability and morphology. The percentage of sperm motility in dextrose diluent 10% (62.1 ± 3.93%) showed a slight difference with the physiological NaCl diluent (62.9 ± 9.51%). The percentage of motility at 50C storage (62.1 ± 3.93%) was better than 260C (54.3 ± 3.45%). This indicated a significant difference (P <0.05) at the 5hour storage time. The percentage of viability showed that 10% dextrose (54.1 ± 5.57%) was better than physiological NaCl (52.21 ± 5.02%). The percentage of life Bangkok chicken sperm was higher at 50C storage (54.1 ± 5.57%) compared to 260C (39.8 ± 16.6%). The percentage of abnormalities with 10% dextrose diluent (8.07 ± 1.15%) was lower than that of NaCl diluent (10.0 ± 1.60%), and the percentage of abnormalities at 50C storage (8.07 ± 1.15) was lower than that of to 260C storage (10.79 ± 1.11%) and showed a significant difference (P <0.05) at 5 hours. In conclusion, the best of tender from this study was dextrose diluent 10% compared to physiological NaCl and storage at 50C was better than storage at 260C.
Pengembangan Perangkat Pembelajaran dengan Model Perubahan Konseptual untuk Meningkatkan Kemampuan Berpikir Kreatif Fisika Peserta Didik Wirda Yusrini; Muh. Makhrus; Gunawan Gunawan; Ahmad Harjono
Indonesian Journal of Applied Science and Technology Vol. 2 No. 1 (2021): Edisi Maret 2021
Publisher : Indonesian

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Abstract

The learning process of a school in the city of Mataram still does not involve students and teachers do not pay attention to the ability to think creatively. The solution to these problems is by using learning methods that are by the demands of the 2013 Curriculum such as a conceptual change model. Based on the description above, the specific target in this study is to develop learning tools with a conceptual change model to improve students' creative thinking skills in physics as a valid product, so that it is suitable for use in learning. Learning tools developed in the form of syllabus, lesson plans, LKPD, and evaluation tools for creative thinking skills. This type of research is a research and development (Research and Development) using a 4-D model which consists of 4 stages of development, namely define, design, develop and disseminate. This research is limited to the development stage, which includes the validity test. Based on the research results it can be concluded that the learning device is categorized as very valid and reliable. This means that the learning tools developed are feasible and can be used in high school physics learning.
Pengaruh Jarak Tanam dan Jumlah Bibit Per Lubang Terhadap Pertumbuhan Padi Lokal Sumbawa (Oryza sativa L.) Lestari Lestari; Wening Kusumawardani; Heri Kusnayadi
Indonesian Journal of Applied Science and Technology Vol. 2 No. 1 (2021): Edisi Maret 2021
Publisher : Indonesian

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Abstract

The aim of this study, was to determine the effect of spacing and number of seeds per planting hole on the vegetative phase of local Sumbawa rice plants in paddy fields. This research was conducted for 3 months. This study, used quantitative method with factorial randomized block design (RBD) with 2 factors, namely are the use of spacing (J) and the number of seeds per planting hole. Each treatment was repeated 3 times. The factor of using spacing consists of 2 levels and the factor of number of seeds per planting hole consists of 3 levels. The results of the analysis showed that the combination treatment had an effect on the spacing and number of seeds per planting hole had a significant effect on the parameter of the number of tillers. The single factor of spacing has a significant effect on the parameter of the number of tillers. The single factor of the number of seedlings per planting hole had a significant effect on the parameter of the number of tillers.
Pengaruh Durasi Skarifikasi dan Konsentrasi Bio-Urine Sapi Terhadap Perkecambahan Biji Lamtoro Tarramba (Leucaena leucocephala cv. Tarramba) Rizka Wahyu; Sudirman Sudirman; Anggi Fitriza; Asrul Hamdani; Cecep Budiman
Indonesian Journal of Applied Science and Technology Vol. 2 No. 1 (2021): Edisi Maret 2021
Publisher : Indonesian

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Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh durasi skarifikasi dan konsentrasi bio-urine sapi terhadap perkecambahan biji lamtoro tarramba (Leucaenaleucocephala cv. Tarramba). Penelitian dilaksanakan dari tanggal 11 sampai 31 Januari 2021, bertempat di Laboratorium Terpadu Universitas Samawa, Sumbawa Besar. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktorial yaitu tingkat konsentrasi dan durasi skarifikasi. Faktor pertama terdiri dari 4 perlakuan yaitu K1= Bio-urine 100%, K2 =Konsentrasi Bio-urine 90%+ 10% air, K3=Konsentrasi Bio-urine 80%+ 20% air, K4 =Konsentrasi Bio-urine 70%+ 30% air. Faktor kedua terdiri dari 3 perlakuan yaitu T1 = Durasi skarifikasi 15 menit, T2 = Durasi skarifikasi 20 menit T3 = Durasi skarifikasi 25 menit. Adapun variabel yang telah diamati adalah persentase dan tinggi kecambah biji lamtoro tarramba (Leucaenaleucocephala cv. Tarramba). Data dianalisis menggunakan analisis of varians (ANOVA). Hasil penelitian menunjukkan persentase kecambah pada perlakuan K1 memperoleh nilai tertinggi yaitu 51.11% dan pada perlakuan T2 memperoleh nilai yaitu 47.22%. Adapun pada perlakuan tinggi kecambah yang menunjukkan hasil tertinggi pada perlakuan K1 dan T1 yaitu 8.05 cm, miskipun demikian durasi skarifikasi dan konsentrasi bio-urine tidak menunjukkan pengaruh yang nyata (P>0.05) pada kedua perlakuan. Hal ini disebabkan tidak adanya pengaruh durasi skarifikasi dan konsentrasi bio-urine sapi terhadap perkecambahan biji lamtoro tarramba (Leucaenaleucocephala cv. Tarramba). This study aims to know the effect of scarification duration and cow bio-urine concentration toward germination of tarramba lamtoro seeds (Leucaenaleucocephala cv. Tarramba). This study has conducted from 11 until January 31 in year of 2021 at integrated laboratory of Samawa University, Sumbawa Besar. This study use factorial Completely Randomized Design (CRD) namely concentration level and the duration of soaking. The first factor consisted of 4 treatments namely K1 = Bio-urine of 100%, K2 = Bio-urine concentration of 90% + 10% of water, K3 = Bio-urine concentration of 80% + 20% of water, K4 = Bio-urine concentration of 70% + 30% of water. The second factor consisted of 3 treatments namely T1 = Length of scarification of 15 minutes, T2 = duration of scarification of 20 minutes T3 = duration of scarification of 25 minutes and dosage combination and duration of scarification consisted of 12 treatments. The variables that had been observed were the percentage and sprouts height of lamtoro tarramba seed (Leucaenaleucocephala cv. Tarramba).The data analyzed using analysis of variance (ANOVA). The results of study showed that the percentage of tarramba lamtoro seed sprouts (Leucaenaleucocephala cv. Tarramba) in the K1 treatment got the highest value namely 51.11% and the T2 treatment got the value of 47.22%. While for the treatment of height sprout showed the highest value in treatment of K1 and T1 namely of 8.05 cm, however the scarification duration and bio-urine concentration did not show a significant effect (P> 0.05) in both of treatments. It was caused that there were not effect of scarification duration and concentration of cow bio-urine toward the germination of lamtoro taramba seed (Leucaenaleucocephala cv. Tarramba).
Pengaruh Konsentrasi Bio-urine Sapi dan Durasi Skarifikasi Terhadap Perkecambahan Tanaman Nila (Indigofera sp) Nuryah K.A.; Sudirman Sudirman; Amrullah Amrullah; Asrul Hamdani; Cecep Budiman
Indonesian Journal of Applied Science and Technology Vol. 2 No. 2 (2021): Edisi Juni 2021
Publisher : Indonesian

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Abstract

This research aims to determine the effectduration of scarification and concentration of cow bio-urine on Indigofera sp seed germination. This research has been conducted from January 2021 to February 2021 located in the integrated laboratory of the Faculty of Animal seience and Fisheries Campus II Biling Monte, University of Samawa (UNSA), Sumbawa Regency. Using factorial completely randomized design (RAL Factorial) with 2 factors, the first factor was 4 treatments K0 (100% aquadest concentration), K1 (100% Bio-urine), K2 (90% Bio-urine + 10% aquadest) and K3 (80% Bio-urine + 20% aquadest) and the second factor was 3 treatments T1 (15 minutes), T2 (20 minutes) and T3 (25 minutes). The observed variable were the height of sprouts and the percentage of sprouts. The results showed that the highest sprout height variable in this research was the K3 concentration with an average of 61.84 mm, for the best duration was T3 with an average of 54.33 mm. Meanwhile, for the interaction between concentration and duration, the best is K3T3, namely 13.06 mm. Concentration and duration of scarification had a very significant effect (P<0.01) on the height of sprouts. The best sprouts percentage variable in this study was the K1 concentration with an average of 45%. While the best duration is T2 with an average of 36.08%. Meanwhile, for the interaction between concentration and duration, the best is K3T2 which is 86.93%. Concentration and duration of scarification had a very significant effect (P<0.01) on the percentage of sprouts. Meanwhile, for the interaction between concentration and duration, the best is K3T2 which is 86.93%. Concentration and duration of scarification had very significant effect (P<0.01) on the percentage of sprouts. Meanwhile, for the interaction between concentration and duration, the best is K3T2 which is 86.93%. Concentration and duration of scarification had a very significant effect (P<0.01) on the percentage of sprouts.
Analisis Produksi Rumput Gajah Mini (Pennisetum Purpureum Cv. Mott) Dengan Jarak Tanam Yang Berbeda Hasri Ainun; Sudirman Sudirman; Edi Wahyu Satri; Asrul Hamdani; Cecep Budiman
Indonesian Journal of Applied Science and Technology Vol. 2 No. 1 (2021): Edisi Maret 2021
Publisher : Indonesian

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Abstract

Penelitian ini bertujuan mengetahui produksi rumput gajah mini (Pennisetum Purpureum CV.Mott) dengan jarak tanam yang berbeda. Dilaksanakan dari bulan Januari 2021 dan berakhir pada bulan Maret 2021 di Laboratorium Bio–Industri Peternakan, menggunakan metode Rancangan Acak Kelompok (RAK) dengan 4 perlakuan dan 4 kelompok menggunakan rumput gajah mini (Pennisetum purpureum cv. Mott) dengan perlakuan jarak tanam yaitu T1 (50 x 50 cm), T2 (50 x 75 cm), T3 (50 x 25 cm) dan T4 (75 x 75 cm). Variabel yang telah diamati tinggi tanaman, jumlah anakan, berat segar total, berat daun dan berat batang. dianalisis dengan analisis of varians, kemudian diuji lanjut menggunakan uji duncan’s new multiple range test (DMRT). Hasil penelitian menunjukkan hasil yang tidak berbeda nyata pada semua variable. Variabel tinggi tanaman tertinggi adalah pada perlakuan T2 (46.02 cm), untuk perhitungan jumlah anakan terbanyak adalah pada perlakuan T2 (6.10 buah anakan), berat segar total tertinggi adalah pada perlakuan T2 (613.51 gram), berat daun tertinggi adalah pada perlakuan T2 (407.88 gram) dan perhitungan berat batang tertinggi adalah pada perlakuan T2 (187.96 gram). Jarak tanam yang berbeda-beda pada semua perlakuan tidak berpengaruh (P> 0.05) terhadap tinggi, jumlah anakan, berat segar total, berat daun dan berat batang rumput gajah mini (Pennisetum purpureum cv. Mott). This study aims to know the production of mini elephant grass (Pennisetum Purpureum CV. Mott) with different spacing. Conducted from January 2021 and ending in March 2021 at the Animal sains Bio-Industry Laboratory, using the Randomized Block Design (RAK) method with 4 treatments and 4 groups using miniature elephant grass (Pennisetum purpureum cv. Mott) with a spacing treatment namely T1 (50 x 50 cm), T2 (50 x 75 cm), T3 (50 x 25 cm) and T4 (75 x 75 cm). The variables observed were plant height, number of tillers, total fresh weight, leaf weight and stem weight. Analyzed by analysis of variance, then further tested using Duncan's new multiple range test (DMRT). The results showed that the plant height and number of tillers showed significantly different results (P<0.05) in the K4 - K1 group, on the parameters of total fresh weight, leaf weight and stem weight showed significantly different results (P <0.05) in the K4-K1 group and the other groups showed results that were not significantly different (P>0.05). In the treatment, the height and weight of the miniature elephant grass showed no significant difference (P>0.05) in all treatments, while in the treatment the number of tillers, total fresh weight, and leaf fresh weight in treatment T2-T3 showed significantly different results (P< 0.05).
Pengaruh Komposisi Media Tanam Serbuk Kayu dan Sekam Padi pada Jamur Tiram Putih Wening Kusumawardani; Hendra Saputra; Heri Kusnayadi
Indonesian Journal of Applied Science and Technology Vol. 2 No. 3: Edisi September 2021
Publisher : Indonesian

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Abstract

The aim of this study was to determine the effect of the composition of the planting medium of sawdust and rice husk on white oyster mushroom (Pleorotus ostreatus). The study was conducted using experimental methods, Completely Randomized Design (CRD) consisted of 5 treatments, which each treatment consisted of three replications. The treatments consisted of SP1 = 100% sawdust + 0% rice husk; SP2 = wood powder 75% + rice husk 25%; SP3 = 50% sawdust + 50% rice husk; SP4 = 25% sawdust + 75% rice husk; and SP5 = 0% sawdust + 100% rice husk. Observational data were analyzed using ANOVA at 5% significance level, if the results of data analysis showed significant differences, then further tests were carried out using the Least Significant Difference Test (LSD) at 5% significance level. The results of data analysis showed that the fastest of mycellium spread time was in the SP5, which was 24 days after inoculation. The fastest of pin head appearance time was found in the SP3, which was 88 days after inoculation. The heaviest fruit weight was found in the SP3 treatment and the lowest fruit weight was found in the SP5.
Effect of Air-Fuel Ratio to Temperature Distribution of Pulverized Coal Boiler Ronaldo Eng; Abrar Riza; Harto Tanujaya
Indonesian Journal of Applied Science and Technology Vol. 2 No. 2 (2021): Edisi Juni 2021
Publisher : Indonesian

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Abstract

A three-dimensional numerical simulation was carried out to study the pulverized coal combustion process in a tangentially fired pulverized pulverized-coal boiler. The realizable k-epsilon model for gas coupled with discrete phase model for pdf-mixtures, P-1 radiation model for radiation. The characteristics of the flow field, particle motion, temperature distribution, and species components were numerically investigated. It is found that an ideal turbulent flow and particle trajectory can be observed in this unconventional pulverized-coal furnace. With the application of air-fuel ratio, combustion takes place near the burner sets. Within the limits of air-fuel ratio, more steady combustion process is achieved. The numerical simulation results reveal that at the air-fuel ratio of 5,7645;11,529; and 23,058 the simulation achieved the maximum temperature of 1916,64? with 91,664% increase for the air-fuel ratio of 11,529, 1519,97? with 51,997% increase for the air-fuel ratio of 23,058, and 1587,15? with 58,715% increase with the air-fuel ratio of 5,7645. The numerical results reveal that air-fuel ratio affects the combustion process in the pulverized-coal boiler simulation.
Pengaruh Model Pembelajaran Conceptual Understanding Procedures (CUPs) Berbantuan LKPD Terhadap Penguasaan Konsep Fisika Peserta Didik Ibrahim Ibrahim; Kosim Kosim; Gunawan Gunawan; Rahmatullah Rahmatullah
Indonesian Journal of Applied Science and Technology Vol. 2 No. 1 (2021): Edisi Maret 2021
Publisher : Indonesian

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Abstract

A common problem that occurs in students is the lack of ability to understand concepts. This is because the physics learning process does not vary. So that innovative learning design efforts are needed. One of the efforts that can be done is by using the CUPs learning model assisted by LKPD. This study aims to determine the effect of learning model Conceptual Understanding Procedures LKPD assisted towards the student’s concept mastery in physics of high school. This research is a quasi experimental research using untreated control group design with pretest and posttest. The population is all students of class XI IPA SMAN 4 Mataram. While the sampling using purposive sampling technique consisting of students’ class XI IPA 4 as experimental class and students of class XI IPA 1 as a control class. The concept mastery data is obtained through a written test in the form of a description item. The result of hypothesis test analysis shows that there is influence of learning model of LKPD-assisted Conceptual Understanding Procedures toward the student’s concept mastery in physics of high school.

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