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Analisis Perbandingan Tingkat Akurasi Pengukuran Heart Rate pada 3 Jenis Alat Elektrokardiogram (EKG) Ramadhani, Rizka Oktavia; Wibowo, Kusnanto Mukti
CYCLOTRON Vol 9 No 01 (2026): CYCLOTRON
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ct.v9i01.30021

Abstract

Elektrokardiogram (EKG) adalah alat penting dalam bidang kardiologi yang digunakan untuk mencatat aktivitas listrik jantung, termasuk mengukur detak jantung. Perbedaan dalam teknologi, kualitas perangkat, serta cara memproses sinyal pada berbagai merek EKG dapat memengaruhi tingkat ketepatan hasil pengukuran. Penelitian ini bertujuan untuk menganalisis dan membandingkan tingkat ketepatan pengukuran detak jantung pada tiga merek EKG, yaitu Falcon, Schiller, dan Fukuda, dengan menggunakan phantom EKG sebagai acuan. Penelitian ini dilakukan secara kuantitatif dengan metode eksperimental dan dilaksanakan di RSUD Majenang. Pemilihan data dilakukan menggunakan simulator EKG Fluke PS401 dengan pengaturan detak jantung standar, yaitu 30, 60, 120, 180, dan 240 BPM, yang diukur berulang pada masing-masing alat. Analisis data menggunakan metode Bland–Altman untuk menilai kesesuaian dan presisi pengukuran serta uji korelasi Pearson untuk mengetahui hubungan linear antar variabel. Hasil penelitian menunjukkan bahwa ketiga merek EKG memiliki tingkat ketepatan yang baik, ditandai dengan garis bias yang mendekati nol dan semua data berada dalam batas Limit of Agreement. Perbedaan dalam kemampuan presisi terlihat pada lebar pita Limit of Agreement, di mana EKG Fukuda menunjukkan pita yang paling sempit, diikuti oleh Schiller dan Falcon. Hasil uji korelasi Pearson menunjukkan hubungan linear yang kuat dan positif pada ketiga alat.
Rancang Bangun Magnetic Stirrer Dual Position dengan Kontrol Kecepatan dan Waktu Independen Berbasis Mikrokontroler yang Terintregrasi IoT kurniawan, rahmat adi; wibowo, kusnanto mukti
CYCLOTRON Vol 9 No 01 (2026): CYCLOTRON
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ct.v9i01.30077

Abstract

Kebutuhan pengadukan lebih dari satu sampel secara bersamaan dalam kegiatan laboratorium menuntut adanya alat yang efisien dan fleksibel. Oleh karena itu, penelitian ini bertujuan untuk merancang dan membangun magnetic stirrer dual position dengan kontrol kecepatan dan waktu pengadukan yang dapat diatur secara independen serta terintegrasi dengan teknologi Internet of Things (IoT). Sistem dirancang menggunakan mikrokontroler ESP32 sebagai pengendali utama, dengan lima tingkat kecepatan pengadukan, yaitu 1500 RPM, 2000 RPM, 2500 RPM, 3000 RPM, dan 3500 RPM. Pengaturan parameter dilakukan melalui keypad 4×4, sedangkan pemantauan informasi sistem ditampilkan pada LCD. Setiap posisi pengadukan dilengkapi sensor magnetic Hall effect untuk membaca kecepatan putar secara real-time. Selain itu, sistem terintegrasi dengan aplikasi Blynk sehingga memungkinkan pemantauan dan pengendalian jarak jauh melalui smartphone. Hasil pengujian menunjukkan bahwa sistem mampu mengendalikan dua posisi pengadukan secara independen dengan persentase kesalahan kecepatan dibawah 5%. Pengujian sensor RPM menunjukkan nilai error di bawah 0,20% pada seluruh setpoint, yang menandakan akurasi dan kestabilan sensor yang tinggi. Dengan demikian, magnetic stirrer dual position yang dikembangkan dinilai layak digunakan untuk meningkatkan efisiensi dan fleksibilitas proses pengadukan di laboratorium.
Development of Transparent Epoxy Resin–Bi₂O₃ Composites as Alternative Radiation Shielding Materials for Optical Shielding Rizki Rifa'i Majid; Kusnanto Mukti Wibowo; Arga Pratama Rahardian; Fathur Rahman Nugraha; Supriyadi Supriyadi
Jurnal Health Sains Vol. 7 No. 3 (2026): Journal Health Sains
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jhs.v7i3.2817

Abstract

Scattered radiation exposure during radiology procedures can reach the head and eye lenses of personnel, requiring eye protection with good radiation attenuation capabilities without compromising comfort. Conventional lead-based radiation protection materials have high density, making them heavy and less ergonomic for long-term use. This study aims to evaluate the X-ray attenuation capability of a transparent epoxy resin–bismuth oxide (Bi₂O₃) composite as a candidate optical shielding material for radiation glasses based on the Half Value Layer (HVL) parameter. The composite was made using epoxy resin as a matrix and Bi₂O₃ as a high atomic number filler, with a mass ratio of 5:1 and a thickness of 0.5 mm and 1.0 mm. Measurements were performed using a diagnostic X-ray machine at voltages of 40 kV and 45 kV with an ionization dosimeter detector. The HVL value was calculated based on the linear attenuation coefficient (μ), and the data were analyzed using the Shapiro–Wilk normality test and Spearman's correlation. The results showed that an increase in composite thickness resulted in an increase in the HVL value, and there was a significant positive correlation between thickness and HVL (r = 0.681; p < 0.01). The epoxy resin–Bi₂O₃ composite showed effective attenuation at thin thicknesses with optical transparency characteristics, making it a potential lead-free optical shielding material for radiation glasses. These findings demonstrate that Bi₂O₃--epoxy resin composites are promising candidates for developing lightweight, transparent, and effective radiation protective eyewear.  
PENGEMBANGAN SIMULATOR FETAL BERBASIS KONTROL SUARA UNTUK PENGUJIAN ALAT FETAL DOPPLER Royan -; Kusnanto Mukti Wibowo; Abdul Latif; Farid Ishartomo; Danu Tirta Nadi; Arif Mulyanto; Isnaeni Rofiqoch
Jurnal Ilmiah Poli Rekayasa Vol 21, No 1 (2025): Oktober
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.21.1.424

Abstract

Fetal Doppler is a diagnostic tool to detect fetal heart rate in BPM (beats per minute). Like other medical devices, it must be calibrated periodically by a health facility testing center, as stated in the Regulation of the Minister of Health of Indonesia Number 54 of 2015 article 4 paragraph 1. Article 8 paragraph 1 explains that testing or calibration of medical devices is carried out periodically at least once a year. In addition, testing must be carried out after repairs to medical devices as stated in SNI IEC 62353 of 2014. In addition to testing and calibration, medical devices need to be maintained and tested for function. Therefore, a fetal doppler simulator is needed by medical device technicians to test the function of the fetal doppler. The innovation made on this device is that the simulator is connected to a smartphone with the aim of minimizing electronic components, eliminating settings with buttons and replacing them with Voice Control on the smartphone. This fetal doppler simulator is successfully designed well, it can simulate fetal heart rate from 60-240 BPM with error value of 0% at settings of 90,120,150,180, and 240 BPM. While at setting 60 BPM there is an error value of 1.6%. This simulator is suitable for use as a reference for fetal doppler function test because the error value is below the tolerance of ±5 for BPM on fetal Doppler.
PERANCANGAN DAN IMPLEMENTASI ALAT PENGECEKAN KABEL NURSECALL BERBIAYA RENDAH SEBAGAI ALTERNATIF MULTIMETER Abdul Latif; Kusnanto Mukti Wibowo; Royan -
Jurnal Ilmiah Poli Rekayasa Vol 21, No 1 (2025): Oktober
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.21.1.426

Abstract

Cables in nurse call systems generally have considerable length and are distributed across multiple installation points, making them vulnerable to faults such as broken wires, loose connections, or continuity problems. These conditions can disrupt communication between patients and medical staff, potentially reducing the quality of healthcare services. Therefore, checking cable continuity before and after the installation process is a crucial step to ensure that each line is properly connected and that the nurse call system operates optimally and reliably. This study designs and tests a low-cost prototype device for checking the continuity of nurse call cables, consisting of two modules: Device A as a 9-volt power source and Device B as a two-line LED-based indicator. The novelty of this research lies in the use of a simple non-microcontroller circuit with direct visual indicators, specifically designed for on-site nurse call cable inspection as a practical alternative to conventional multimeters. The research method includes circuit design, prototype development, and field testing on cables with various length variations, followed by a functional comparison with conventional testing methods. The test results indicate that the device is capable of reliably detecting cable conditions through LED indicators that turn on or off during each test, with a high level of consistency. In addition, its low production cost and ease of use provide practical contributions for technicians involved in the installation and maintenance of nurse call systems, particularly in field conditions that require fast and efficient inspection.
Analysis of Menstrual Knowledge and Mother-Child Communication on Anxiety 4TH-6TH Grades Female Students at Ash-Shodiq Islamic Elementary School Bululawang in 2024 Mukti Wibowo, Kusnanto; Dwi Anjani, Ikrima; Supriyadi, Supriyadi; Dwi Tama , Tika
Jurnal Health Sains Vol. 7 No. 4 (2026): Journal Health Sains
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jhs.v7i4.2822

Abstract

Menarche, the onset of menstruation, is a significant event in a woman’s life, yet it often becomes a source of anxiety for adolescent girls, especially those lacking adequate knowledge and support. This study aimed to analyze the influence of menstrual knowledge and mother-child communication on anxiety levels in fourth to sixth grades female students at Ash-Shodiq Islamic Elementary School Bululawang. This study employing a cross-sectional design with a descriptive analytical quantitative approach, with involved 55 selected through purposive sampling. The results revealed that majority of students experienced severe anxiety related to menstruation. Ordinal logistic regression analysis revealed poor menstrual knowledge and poor effective mother-child communication significantly contributed to elevated anxiety levels in partially. However, through simultaneously analysis, it was found that only menstrual knowledge had a significant effect on anxiety after controlling for the mother-child communication variable. These findings underscore the importance of sound menstrual knowledge in mitigating anxiety in students facing menarche, while effective mother-child communication also plays a crucial role, albeit one that needs to be complemented by adequate knowledge.
Effects of Various Semiconducting Oxides as Photoanode and Counter Electrode for Dye Sensitized Solar Cell Application - A Review fatiatun, fatiatun; Bakar, Suryani Abu; Marwoto, Putut; Wibowo, Kusnanto Mukti; Muqoyyanah, Muqoyyanah; Firdaus, Firdaus
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 2 (2020): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v10i2.35195

Abstract

Dye sensitized solar cells (DSSCs) merupakan teknologi alternatif fotovoltaik yang menguntungkan. DSSCs menunjukkan harga yang murah, efisiensi yang tinggi dan proses pembuatan yang sederhana. Dalam aplikasi DSSCs, fotoanoda memiliki peranan yang penting untuk mengumpulkan elektron-elektron yang tereksitasi dan dye berfungsi untuk menyalurkan cahaya elektron-elektron ke transparent conducting film (TCF). Fotoanoda mempunyai band gap yang lebar pada semikonduktor logam oksida (contoh: zinc oxide (ZnO) dan titanium dioxide (TiO2)) yang dilapiskan pada TCF. Counter electrode (CE) adalah salah satu komponen yang penting dalam proses kerja DSSCs. CE digunakan sebagai mediator untuk membangkitkan sensitizer setelah masuknya elektron. Bahan CE yang ideal harus mempunyai resistansi yang rendah, biaya produksi yang murah, konduktivitas listrik yang tinggi, aktivitas elektrokatalitik yang bagus dan stabilitas yang tinggi. Bahan-bahan CE yang umum digunakan untuk aplikasi DSSCs yaitu seperti platina (Pt), karbon, carbon nanotubes (CNTs), grafin dan polimer konduktif. Review ini dikembangkan untuk mempelajari sifat-sifat bahan fotoanoda dan CE yang bagus untuk aplikasi DSSCs. Review ini juga digunakan untuk memberikan informasi untuk perkembangan bahan-bahan fotoanoda dan CE pada penelitian selanjutnya dalam aplikasi DSSCs. Dalam review ini, pengaruh bahan-bahan yang digunakan untuk fotoanoda dan CE dalam aplikasi DSSCs didiskusikan.
Co-Authors Abdul Latif Abdul Latif Abdul Latif Achmad Noerkhaerin Putra Ahmad Khoiri Ahmad Mohd Khairul Ahmad Norazlina Aini Nurul Anang Widiantoro Anjani, Annisa Gallela Annisa Gallela Anjani Apit Fathurohman Arga Pratama Rahardian Ariesma Githa Giovany Arif Mulyanto Arif Mulyanto, Arif Aushaaf, Muhammad Hisyam Bakar, Suryani Abu Bintang Kukuh Iman Setyabudi Cayanan, Edgardo Che Ani, Norhidayah Danu Tirta Nadi Dwi Anjani, Ikrima Dwi Tama , Tika Fani Susanto Farid Ishartomo Fathur Rahman Nugraha Fatiatun Fatiatun Fatiatun Fatiatun Fatiatun, Fatiatun Fatimah Nur Hidayah Firdaus Firdaus Firdaus Firdaus Fitriana, Lutfatul gema romadhona Hernastiti Sedya Utami Hidayat, Fathur Rachman Ilham Bagas Indaryanto Ilham Ilham Irmawanto, Rudi Ishartom, Farid Ismi Rahayu Isnaeni Rofiqoch Iwan Setiawan Iwan Setiawan Jadmika, Muhammad Riefki Jumrianto Jumrianto Jumrianto, Jumrianto Khumaeroh, Nadia kurniawan, rahmat adi Maftuh Ulumudin Mela Afiliyani Mohamad Fariza Muqoyyanah, Muqoyyanah Muzdalifah, Nadifah Pratiwi N. Prasath N. Prasath5, N. Prasath Najib Al Adib Nani Sunarmi Nur An-Nuha Muniroh Nurliana, Evi Petrus Heru Sudargo Presillia Grisviani Grisviani Putut Marwoto Rahayu, Gusrina Rahmayanti, Handika Dany Ramadhani, Rizka Oktavia Rizki Rifa'i Majid Romadhona , Gema Royan , Royan Royan - Royan Royan royan, royan Rum Sapundani Samudra, Alan Sri Jumini Sunarto, Presillia Grisviani Supriyadi Supriyadi Supriyadi Supriyadi Susanto, Fani Talib Azman Totok Wartiono Utami, Hernastiti Sedya Wahyu Caesarendra Yuswono, Puji