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All Journal Jurnal Fisika : Fisika Sains dan Aplikasinya JURNAL KESEHATAN MERCUSUAR Jurnal Pijar MIPA
Setiana, Mira
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Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Electrical & Electronics Engineering Health Professions Materials Science & Nanotechnology Mathematics Physics Public Health

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Comparative Characteristics of Electrolyte Solutions Using Electrical Impedance Spectroscopy Method Fathia D.S, Adinda Fajar Mila; Sugianto, Wahyu; Setiana, Mira
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i5.7090

Abstract

Electrolyte solutions can conduct electric current and help maintain balance in the human body. This study compares the electrical impedance characteristics of various electrolyte solutions using the Electrical Impedance Spectroscopy (EIS) method. Three types of electrolyte solutions were tested: NaCl solution, Ringer’s Lactate (RL) solution, and Simulated Body Fluid (SBF) solution with concentration variations of 20%, 40%, 60%, 80%, and 100%. Measurements were conducted over a frequency range from 1 Hz to 1 MHz to compare electrolyte solutions using a frequency of 10 kHz with an electric current of 50 μA. At a frequency of 10 kHz, a comparison of the three types of electrolyte solutions with concentration variations from 20% to 100% was made. The measurement result showed that the NaCl solution had an impedance value of 200Ω to 900Ω at high frequencies. The Ringer’s Lactate (RL) solution exhibited impedance variations with impedance values ranging from 800Ω to 300Ω, which is more complex due to the other hand, the Simulated Body Fluid (SBF) solution demonstrated impedance stability at high frequencies with impedance values ranging from 400Ω to 200Ω, indicating its electrical properties suitability with human body conditions. Each electrolyte solution has its characteristics in impedance values at a frequency of 10 kHz, which allows for comparing the three types of electrolyte solutions. For further research, additional studies could include impedance characteristics of electrolyte solutions to broaden understanding of their electrical properties, considering variations in frequency and current conditions to optimise impedance characteristic measurements for various electrolyte solutions.
PENGARUH VARIASI LAJU ALIRAN BLUE GAS TERHADAP PROPERTY KIMIA LAPISAN TIPIS KARBON YANG DIDEPOSISIKAN MENGUNAKAN TEKNIK PLASMA CHEMICAL VAPOR DEPOSITION (CVD) UNTUK APLIKASI BIOSENSOR Setiana, Mira; Ferawati, Bangkit Ina
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 10 No 1 (2025): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v10i1.20634

Abstract

[Effect of Variation of Blue Gas Flow Rate on Chemical Properties of Carbon Thin Films Deposited Using Plasma Chemical Vapor Deposition (CVD) Technique for Biosensor Applications] Biosensors are important devices in the field of medical diagnostics. The high cost due to their single-use is a challenge that must be overcome. The solution that can be done is modifying the surface of the biosensor electrode. Modifying the electrode surface is very important in increasing the selectivity and sensitivity of the sensor. Modification of the biosensor electrode surface can be done by depositing a thin layer of carbon. The surface properties of the modified layer determine the performance of the biosensor. This study aims to analyze the effect of the blue gas flow rate on the chemical bond composition of the deposited layer for biosensor applications. The deposition technique used is the Plasma Chemical Vapor Deposition (CVD) Technique. The substrate used is a glass substrate. The main gases used are Blue Gas and Argon Gas. The role of Blue Gas is a carbon source, while Argon Gas is a carrier gas. The Argon gas flow rate is kept constant (25 mL/minute), while the Blue Gas flow rate is varied: 9.6 mL/minute, 24.1 mL/minute, and 48.2 mL/minute. Characterization of the deposited layer is carried out using Fourier Transform Infra-Red (FTIR). The main chemical bonds observed were C=O, and C=C in the resulting carbon thin film. The absorbance intensity of the C=C chemical bond tended to increase at a Blue Gas flow rate of 24.1 mL/min and decreased at a Blue Gas flow rate of 48.2 mL/min. While the C=O chemical bond tended to decrease as the Blue Gas flow rate increased into the chamber.
Pengaruh Usia dan Kadar Asam Urat Terhadap Risiko Hiperurisemia Ina Ferawati, Bangkit; Setiana, Mira
JURNAL KESEHATAN MERCUSUAR Vol. 8 No. 1 (2025): Jurnal Kesehatan Mercusuar
Publisher : Universitas Mercubaktijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36984/jkm.v8i1.616

Abstract

Hiperurisemia adalah kondisi yang terjadi akibat tingginya kadar asam urat dalam darah, yang dapat menyebabkan berbagai masalah kesehatan seperti gout dan penyakit ginjal. Di Indonesia, kasus hiperurisemia ditemukan cukup tinggi, dengan prevalensi sekitar 24% pada pria dan hampir 12% pada wanita, dan kecenderungannya meningkat seiring pertambahan usia serta pola hidup yang kurang sehat. Usia dan kadar asam urat diketahui sebagai faktor penting yang mempengaruhi risiko hiperurisemia, tetapi hubungan antara kedua faktor ini masih memerlukan penelitian lebih lanjut untuk memahami pengaruhnya secara mendalam. Penelitian ini bertujuan untuk mengevaluasi hubungan antara usia dan kadar asam urat serta perbedaan kadar asam urat antara kelompok dengan risiko hiperurisemia dan kelompok tanpa risiko. Sebanyak 42 responden, terdiri dari 21 dewasa dan 21 lansia, diikutsertakan dalam studi ini. Data mengenai kadar asam urat dan riwayat penyakit yang menjadi faktor risiko hiperurisemia dikumpulkan dan dianalisis menggunakan uji korelasi, ANOVA, dan uji t. Hasil analisis menunjukkan bahwa tidak terdapat hubungan signifikan antara usia dan kadar asam urat, dengan nilai korelasi sebesar -0,007. Uji ANOVA juga menunjukkan bahwa variasi kadar asam urat antar kelompok usia tidak signifikan (F hitung < F kritis, p = 0,91). Selain itu, uji t satu arah dan dua arah menunjukkan bahwa tidak terdapat perbedaan signifikan dalam kadar asam urat antara kelompok dengan risiko hiperurisemia dan kelompok tanpa risiko, dengan p-value masing-masing sebesar 0,46 (one-tailed) dan 0,91 (two-tailed).. Penelitian ini memiliki beberapa keterbatasan, termasuk ukuran sampel yang terbatas dan potensi bias dari metode pengumpulan data subyektif. Oleh karena itu, Penelitian lanjutan dengan variabel yang lebih beragam dan metode ukur yang lebih akurat tetap diperlukan. Masyarakat juga disarankan untuk mulai menjaga pola makan dan rutin memeriksakan kadar asam urat guna mencegah risiko gangguan kesehatan yang lebih serius.
Co-Authors Fathia D.S, Adinda Fajar Mila Ferawati, Bangkit Ina Ina Ferawati, Bangkit Wahyu Sugianto