Mineral oil, which is the basis of petroleum, has long been used as an insulating and cooling medium for transformers. In fact the petroleum has a limited supply, over time it will run out, cannot be renewed, even petroleum is poisonous, cannot be decomposed. In this study, researchers used vegetable oil that is renewable, biodegradable, and safe for living things and the environment, namely olive oil with good quality, from the first pressed of olives, which is called extra virgin olive oil to be applied to transformers as an insulating and cooling medium. To determine the feasibility of using extra virgin olive oil as transformer oil, the test is to determine the value of the breakdown voltage. Breakdown voltage is the voltage value when the transformer components become connected because oil cannot perform its function as insulation. Tests carried out according to international standards IEC 156, 296 and SPLN 49-1. The breakdown voltage value at room temperature (28 °C) is 46.73 kV, at a temperature of 50 °C where the transformer operates is 48.31 kV. At a temperature of 50 °C the breakdown voltage value is higher due to heating which causes water content, air bubbles, and voids to be reduced.
Nowadays, health care has turned out to be more technology-oriented. Today's technology is demanded to be practical and easy to use. The number of mobile devices based on the Android operating system has increased significantly based on data. The open-source nature of android helps in programming applications easily according to user requirements. The syringe pump is a medical device that functions to enter the medicinal fluid into the patient's body at a specific dose and time automatically in mL/hour. The syringe pump is generally equipped with an alarm. Alarms have a vital function to provide information to nurses or doctors on duty. Medical officers cannot hear alarms outside the patient monitoring room. This paper aims to design a syringe pump that is equipped with a NodeMCU8266 WiFi module to provide notifications via a smartphone so that nurses or doctors can know the alarm even though they are outside the patient monitoring room. So, this is expected can improve patient safety. In addition, this paper also aims to verify the size of the syringe against the drug flow rate. Based on the test results, the syringe pump can control the drug flow rate with a sensor accuracy of 0.0217 and an error rate of 0.6% at a target volume of 5mL. The syringe pump can also send alarm notifications to smartphones in real-time.
This paper explains the effects of BSA/PBA-NHS/Graphene/SiO2 used as a sensing layer for E. coli bacteria sensor based on the electrical properties. In this research, graphene is used as a sensing layer due to its superior properties especially its biocompatibility. The biocompatibility of graphene was examined by topological properties by AFM. Moreover, it was also confirmed by Raman spectroscopy. The topological structure and Raman spectroscopy showed good results which is indicate the graphene layer suitable for biosensing applications. Additionally, it was also confirmed that the antibody was successfully immobilized on the modified SiO2/graphene/PBANHS. PBANHS is used as a linker due to its cost-effective and time-saving. The electrical properties of the sensing layer before and after the immobilized antibody shows a significant difference. When the number of E. coli bacteria increases, the current increase also became higher. The change in resistance gradually increases from 0.04 to 2.62 Ħ when the number of bacteria increases from 55 to 1200 CFU/ml.-+.
Phototherapy merupakan perangkat yang dapat menghasilkan radiasi cahaya biru untuk terapi hiperbilirubinemi. Phototherapy memiliki banyak jenis lampu yang dapat menghasilkan radiasi sinar biru,salah satunya neon tabung yang banyak kita jumpai di indonesia, jenis lampu ini harganya murah namun masa efektifnya pendek, sehingga untuk meningkatkan efektivitas terapi hiperbilirubinemia, lampu harus di ganti ketika nilai iridiasinya kurang dari 176 μW / atau sekitar 2000 jam penggunaan. Tujuan dari penelitian ini adalah mengembangkan phototherapy yang dilengkapi dengan notifikasi via smartphone, sehingga sebelum masa efektif lampu habis, phototherapy secara otomatis mengirimkan pesan singkat kepada pengguna. Berdasarkan pengujian dengan perbandingan waktu 1:100, pengguna menerima pesan singkat 3 menit sebelum masa efektif lampu habis, Notifikasi ini sangat membantu manajemen rumah sakit untuk menganggarkan pembelian suku cadang.Phototherapy merupakan perangkat yang dapat menghasilkan radiasi cahaya biru untuk terapi hiperbilirubinemi. Phototherapy memiliki banyak jenis lampu yang dapat menghasilkan radiasi sinar biru,salah satunya neon tabung yang banyak kita jumpai di indonesia, jenis lampu ini harganya murah namun masa efektifnya pendek, sehingga untuk meningkatkan efektivitas terapi hiperbilirubinemia, lampu harus di ganti ketika nilai iridiasinya kurang dari 176 μW / atau sekitar 2000 jam penggunaan. Tujuan dari penelitian ini adalah mengembangkan phototherapy yang dilengkapi dengan notifikasi via smartphone, sehingga sebelum masa efektif lampu habis, phototherapy secara otomatis mengirimkan pesan singkat kepada pengguna. Berdasarkan pengujian dengan perbandingan waktu 1:100, pengguna menerima pesan singkat 3 menit sebelum masa efektif lampu habis, Notifikasi ini sangat membantu manajemen rumah sakit untuk menganggarkan pembelian suku cadang.
Nanoteknologi adalah teknologi terbaru yang sangat menjanjikan untuk masa depan yang memiliki banyak aplikasi potensial dan aktual pada perangkat nanoelektronik. Namun, untuk mendapatkan manfaat pada nanoteknologi diperlukan teknologi canggih itu sendiri. Masalah utama fabrikasi perangkat nanoelectronic adalah skalanya yang kecil, area yang kecil, volume yang kecil dan konsentrasi yang rendah. Pembuatan dalam skala nano memunculkan masalah tidak hanya pada kinerja, tetapi juga biaya untuk industri elektronik. Untuk mengatasi masalah ini, kami mempelajari profil kontak logam. Kami menyajikan profil aluminium (Al) untuk mendapatkan sifat-sifat yang diharapkan dan juga efektif dalam hal biaya, karena aluminium banyak digunakan dalam banyak aplikasi elektronik seperti spintronics, sel surya, transistor film tipis, dan bahkan untuk fotokatalis. Dalam penelitian ini, Al dievaporasikan oleh termal evaporator. Sifat struktural film Al dikarakterisasi menggunakan XRD, AFM, dan FESEM. Sifat kelistrikan dikarakterisasi menggunakan Four-point probe. Hasilnya menunjukkan peningkatan ketebalan menyebabkan penurunan resistivitas dan ukuran strain film Al serta meningkatkan biaya.
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