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Ahmad Isro'il
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ahmad.isroil@gmail.com
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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. 3 No. 2 (2023): Jurnal Matematika dan Sains (JMS)" : 6 Documents clear
Teknik Array pada Antena Mikrostrip Patch Rectangular dengan Slot Persegi Panjang Dan Slot T pada Groundplane untuk Meningkatkan Gain Antena lathifa Lathifatus Sholihah
Jurnal Matematika dan Sains (JMS) Vol. 3 No. 2 (2023): 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.v3i2.180

Abstract

The development of increasingly sophisticated and digital information technology. Fast and real-time communication by utilizing technology to exchange data using a high internet connection. WiFi (Wireless Fidelity) serves to send and receive radio waves or electromagnetic waves in a free medium to be transmitted. Technological developments are expected to have a centered antenna beam orientation in a certain direction with a high gain value. High gain values ??with a centralized antenna beam can be achieved using a microstrip antenna with an array system. In this study, a rectangular 1x4 microstrip patch antenna array was designed with a rectangular slot and a T slot on the groundplane with a working frequency of 2.4 GHz made from FR4 substrate with a dielectric constant of 4.6 with a thickness of 1.6 mm, in order to get a higher gain value. compared with the single antenna from the previous study. The antenna design will be simulated using CST 2021 software. In this antenna design, 3 methods are used, namely Finite Element Method (FEM), Spectral Domain Technique (SDT), Finite Integration Technique (FIT). So that the results obtained from the antenna criteria are as follows: Return Loss -40,404 dB, VSWR 1,019, Bandwidth 4.029%, Gain 11 dBi, and the radiation pattern is directional.
Optimalisasi Hasil Produksi Menggunakan Metode Khun Tucker Dhurun Muhdi Zayyan; Ahmad Isro'il
Jurnal Matematika dan Sains (JMS) Vol. 3 No. 2 (2023): 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.v3i02.226

Abstract

The purpose of this study was to determine the maximum profit in Islah Convection. This study used the Kuhn-tucker method. The Kuhn-tucker method is a method used to determine the optimum value of a function with an inequality constraint. The steps of this research are forming decision variables, forming objective functions, forming constraint functions, forming mathematical models with linear programming, solving optimization problems using the Kuhn-tucker method, and drawing conclusions. The results of the completion of this study obtained a maximum profit of Rp. 273,562,325 in the production of 4 types of clothes, which include 200 units of male school uniform, 200 units of female school uniform, 60 units of alma mater coat, and 30 units of katelpak. . Based on the results of the optimization, it can be concluded that the profit of clothing production in Islah Convection is optimal
Utilization of Fermented Papaya and Apple Peels for Eco-Friendly Treatment of Waste Water Sitti Nur Ilmiah
Jurnal Matematika dan Sains (JMS) Vol. 3 No. 2 (2023): 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.v3i02.227

Abstract

Unbalanced environmental conditions are a problem that must be overcome. The presence of pollutants is one of the conditions that cause the environment to be unbalanced so that it needs to be handled. Pollution of the aquatic environment needs attention because the impact given is quite troubling. An alternative that can be done in reducing pollutants in waters is to use liquid treatment from fermentation of organic waste. The content of fermented fruit peel waste is believed to reduce the content of water pollutants. The organic material fermentation method is used to remodel substrates from fruit and vegetable peels into certain products through chemical reactions that occur. The purpose of this study was to determine the pH, TSS, BOD, and COD values with and without papaya and apple peel fermentation liquid. The method developed in this research is descriptive quantitative. The results showed that the addition of papaya peel fermentation liquid to contaminated water resulted in pH, TSS, BOD, and COD parameter values of 2.56+0.18, 320.00+24.05 mg/L, 803.54+66.25 mg/L, and 2832.54+65.21 mg/L, respectively. The addition of apple peel fermentation liquid to contaminated water resulted in pH, TSS, BOD, and COD parameter values of 2.87+0.18, 770.00+38.20 mg/L, 1707.53+70.12 mg/L, and 11291.87+241.97 mg/L, respectively.
Identifikasi Litologi Batuan Pantai Jolosutro, Kabupaten Blitar Menggunakan Landsat 8 Oli (Tirs) Rifko Cahyo
Jurnal Matematika dan Sains (JMS) Vol. 3 No. 2 (2023): 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.v3i02.229

Abstract

The lithology of Jolosutro Beach, Blitar Regency, East Java was studied using remote sensing methods. The purpose of this study was to identify the lithology of rocks at Jolosutro Beach, Blitar Regency, East Java. Satellite images are Landsat 8 OLI/TIRS satellite images. The Landsat 8 OLI/TIRS satellite images were then adjusted and combined with RGB. The results of remote sensing data processing showed that the surface lithology of the study area was dominated by andesite-basalt-wash rocks, whose origin is suspected to be from Futhokria and Tenggeri mountains.
The Analysis of Attractant Compound From Neoregelia spectabilis As Breeding Site of Aedes albopictus Fita Fita
Jurnal Matematika dan Sains (JMS) Vol. 3 No. 2 (2023): 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.v3i2.230

Abstract

The control of the Aedes albopictus mosquito vector still relies on the use of insecticides. The use of insecticides if not appropriate can have a negative impact on the environment and non-target organisms. Neoregelia spectabilis is a plant from the Bromeliaceae family which is often used as a natural breeding site for Aedes albopictus. In addition to the morphological factors, it is suspected that there are interesting chemical compounds that make this species a breeding site for Aedes albopictus mosquitoes. This study aimed to analyze the content of chemical compounds that are attractants from the plant species Neoregelia spectabilis. The research method began with taking samples of young leaves, extracting them by maceration, concentrating with a rotary vacuum evaporator and testing the content of compounds using the GCMS Variant Sarurn 2000. The results of the GCMS analysis showed that the chemical compounds present in Neoregelia spectabilis are compounds from the groups of alcohols, alkanes, esters, and terpenes One of the attractant compounds found is a compound from the alkane group. The group of alkane compounds was found as much as 50.63%.
Uji atraktan ekstrak daun kelapa, pisang, bambu, dan bromelia terhadap jumlah dan daya tetas telur Aedes albopictus Eni Ritnasari
Jurnal Matematika dan Sains (JMS) Vol. 3 No. 2 (2023): 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.v3i02.255

Abstract

The Aedes albopictus mosquito is one of the main vectors that causes Dengue Hemorrhagic Fever (DHF) which needs to be controlled. Control using natural insecticides derived from plants is proven to be safer. The purpose of this study was to determine the effect of coconut, banana, bamboo and bromeliad leaf extracts on the number and hatchability of Aedes albopictus mosquito eggs. This type of research is an experiment with a Completely Randomized Design (CRD) pattern which was carried out in the Billfath University laboratory. The treatment consisted of extracts of banana leaves (10% DP), coconut leaves (10% DK), bamboo leaves (10% DBa), bromeliad leaves (10% DBr), control (100% water). The results showed that coconut, banana, bamboo and bromeliad leaf extracts had an effect on the number of Aedes albopictus eggs but had no effect on the hatchability of Aedes alboictus eggs, with the highest average number of eggs in the 10% bromeliad treatment of 5.42 eggs.

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