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Ahmad Isro'il
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Jurnal Matematika dan Sains (JMS)
Published by Universitas Billfath
ISSN : 27752631     EISSN : 27750671     DOI : https://doi.org/10.55273/jms.v1i01
Core Subject : Science, Education, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics
Jurnal Matematika dan Sains (JMS) adalah jurnal yang memuat artikel yang berkaitan dengan hasil penelitian Biologi, Matematika, Fisika, Kimia dan terapanya
Arjuna Subject : Umum - Umum
Articles 6 Documents
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Search results for , issue "Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)" : 6 Documents clear
UJI KEOPTIMALAN METODE KSAM UNTUK MENYELESAIKAN SOLUSI AWAL MASALAH TRANSPORTASI Dhurun Mudhi Zayyan; Rihatul Janah; Aris Alfan
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.75

Abstract

Production activities are closely related to business actors or economic actors who must apply economic principles. It is from this principle that the optimization problem arises. This problem can be solved in various ways, one of which is linear programming. The transportation method is one of linear programming. This method is used to adjust the distribution from sources that provide the same product to the destination optimally. The method of transportation is an important component in its operations because it greatly affects the costs incurred in product distribution. The transportation method has two stages of completion, the first is determining the initial solution and the second is determining the optimal solution. KSAM is a new method formulated to solve transportation problems. The KSAM (Karagul-Sahin Approximation Method) method that was recently introduced is said to provide fairly good performance compared to other methods. From the transportation problem that is addressed in this article by comparing several methods, it is found that the KSAM method provides the best solution with a fairly large solution deviation. then this method can be used as a reference to get the optimal solution.
ACTIVITY TEST GUAVA LEAF EXTRACT ( Psidium guajava L.) ON THE GROWTH OF Streptococcus sp. Inayah Fitri; Durroh Humairoh
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.76

Abstract

Caries is one of the dental and oral health problems caused by the Streptococcus genus. The control of dental plaque has been done with brushing teeth and using mouthwash based chemicals that pose a risk to the stomach. The purpose of this study to determine the active compounds contained in extracts and inhibitory activity as well as the power to kill a minimum of guava leaf extract on growth Streptococcus sp.. The method of this research is MIC and MBC test. Data of MBC test was using one way ANOVA. Based on the research is showed guava leaf extract containing the active compound. MIC test concentration 20% showed a decrease in OD values and MBC not significantly (p = 0.065> 0.05). Conclusion active compounds contained in extracts is alkaloids, flavonoids, saponins, and tannins. MBC statistical tests showed that the leaf extract of guava can’t inhibit the growth of Streptococcus sp..
IDENTIFIKASI PHYTOTELMATA YANG DIGUNAKAN SEBAGAI TEMPAT PERINDUKAN AEDES SPP. DI KEDIRI JAWA TIMUR Fita Fitriatul Wahidah; Umi Maimunah
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.77

Abstract

Phytotelmata are plants that hold water in one or more parts of their body of plant. The water that is collected in the body parts of the phytotelmata is used as a breeding habitat for Aedes spp. This study aimed to determine the diversity of phytotelamata species in Kediri, which is one of the cities with the highest DHF cases in January 2019 in East Java. This research was descriptive observational. The sampling point was determined using purposive sampling method. The results showed that there were nine species of phytotelmata which were used as breeding sites for Aedes spp. in Kediri, namely Musa paradisiaca, Colocasia esculanta, Neoregelia spectabilis, Bambusa sp., Neoregelia charm, Aechmea fasciata, Xanthosoma sagittifolium, dan Bromelia sp. Species of Aedes founded were mostly Ae. albopictus. The average volume of water contained in one part of the phytotelmata is 90.11 ml with a water temperature ranging from 25-26oC and pH of water is 6-7.
KAJIAN MORFOLOGI IKAN SILI PADA NASI BORANAN MAKANAN KHAS DAERAH LAMONGAN PROVINSI JAWA TIMUR Yustika Aulia Rahma
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.78

Abstract

Boranan rice is a traditional and typical food from the Lamongan city and can only found in the Lamongan area. Boranan rice, consisting of rice, spices, side dishes, and peanut crips; which is a type of cracker made from rice flour with seasoned and fried. One of special side dish from Boranan Rice is smoked Sili Fish. Sili Fish is a tropical river fish that usually used to ornamental fish and also cosumed by Lamongan people. The purpose of this study was to identify the type of Sili Fish that used as a complement to boranan rice and to describe the history of Sili Fish that used for side dishes of boranan rice. The research was conducted using interviews and direct field observations. The type of Sili fish used in the side dish of boranan rice is Macrognathus aculeatus (Order: Synbranchiformes, Family: Matacembelidae). Sili fish is used as a typical side dish of boran rice because no community has yet processed sili fish as food, so that the Lamongan people, especially those who sell boran rice, take advantage of the presence of sili fish which is found in the Bengawan Solo river by making it a special side dish in boran rice.
SIMULASI DESAIN ANTENA MIKROSTRIP U-SHAPE UNTUK KOMUNIKASI 5G
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.79

Abstract

5G technology is expected to start spreading in 2020. Underlies the need for study and research on this technology. This study aims to design an antenna that can be used for Fifth Generation (5G) mobile communication transmission. Designing an appropriate antenna design to provide antenna characteristics by the expected working frequency needs to be done so that antenna performance can be maximized. The manufacture of the antenna is carried out with the stages of the process starting from the study of the material, making the antenna design, then this design is analyzed using the CST Suite 2017 software. The analytical methods used include FDTD, FEM, and, MoM. The simulation with the software aims to get the working frequency in the 5G range, radiation patterns, polarization, gain and, return loss. The results of the simulation are then performed the VSWR characterization, return loss, reflection coefficient, radiation pattern and, gain. Furthermore, comparisons and conclusions can be made. Antennas that have been designed, fabricated and, carried out characterization have concluded that the antenna is capable of working at a frequency of 28 GHz. Characterizatio of the antenna are VSWR 1.295, Return Loss -19.01 dB, Directional radiation pattern and, Gain of 13.2 dBi.
EFEK PENYISIPAN Cu KE DALAM DYE BERAS HITAM DENGAN LUASAN 0,5 cm2 PADA DYE SENSITIZED SOLAR CELL (DSSC) Ulfa Mahfudli Fadli; Ardimas; Agus Supriyanto; Cari; Ashari Bayu Prasada
Jurnal Matematika dan Sains (JMS) Vol. 1 No. 1 (2021): Jurnal Matematika dan Sains (JMS)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55273/jms.v1i1.80

Abstract

Thanks to the addition of copper (Cu) metal into black rice (Oryza sativa L. indica) dye as an active material, It has been successfully developed Dye-Sensitized Solar Cells (DSSC). The structure of the sample as a sandwich consisting of the working electrode (TiO2), dye, electrode of platinum (Pt) and the electrolyte sandwiched between two electrodes. Extraction process of black rice Dye was stirred for 30 minutes, then mixed with copper metal (Cu) and be waited for 24 hours. Cu metal was obtained by stirring Copper Sulfate Pentahydrate for 2 hours. The Current and voltage (I-V) of the sample was characterized by using Keithley 2602A. The measurement results showed that the inserting Cu metal of 2 g (0.36 M) was reached the highest efficiency of 0.0217%.

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