The spread of the Covid-19 virus continues to increase, so it is necessary to take preventive measures through increasing public awareness of the implementation of the COVID-19 prevention health protocol. Raising awareness can be done through socialization starting from the dangers of civid-19 and implementing standards for the prevention of covid-19 health protocols. The method used can be through the lecture method through online meetings. the media that can be used are the material of the dangers of covid-19, and the health protocol for the prevention of covid-19 according to the standards of the Ministry of Health of the Republic of Indonesia. evaluation is carried out by providing a questionnaire before and after socialization activities. The results of the socialization show a significance of 0.000, which is less than the significance level (a) of 0.05. These results mean that there is a significant difference between awareness of the dangers of covid-19 and health protocol care behavior before and after socialization. The t table shows that the t count is negative, namely 7.844, which means that the average before was lower than after the socialization was carried out.
Fenomena aliran sangat penting dalam rangka untuk mengetahui lebih lanjut tentang mekanisme Counter-Current Flow Limitation (CCFL) atau transisi dari aliran berlawanan arah menjadi aliran searah. Pola aliran stratified menjadi karakter yang awal dalam fenomena selanjutnya. Peningkatan kecepatan udara yang kecil akan sangat mempengaruhi pola aliran berubah. Gangguan antar muka akan selalu besar seiring dengan peningkatan kecepatan udara. Alat yang digunakan untuk penelitian ini sama dengan salah satu komponen pada Pressurized Water Reactor (PWR) yang disebut hot leg dengan perbandingan 1/30. Hot leg adalah bagian pipa yang diamati dalam penelitian ini. Dimensi dari hotleg berupa pipa mendatar, pipa miring dan belokan yang terpasang menjadi satu dalam suatu saluran pokok PWR. Pada penelitian ini simulator hot leg dibuat dengan L/D = 50 dan L/D = 25. Simulator ini terdiri dari pipa horizontal, belokan dan miring dengan sudut kemiringan 50o. Visual yang dapat diamati dalam saluran hotleg, sehingga fenomena-fenomena yang terjadi dapat diamati secara rinci. Pengamatan visual dilakukan dengan menggunakan kamera berkecepatan tinggi. Sehingga data yang didapat dan diolah didapatkan secara valid. Hasil pengamatan yang diperoleh adalah pola aliran yang terjadi pada pipa horizontal. Penambahan kecepatan udara menyebabkan cepat terjadinya perubahan pola aliran pada L/D = 50. Sedangkan, pada L/D = 25 perubahan pola aliran dapat terjadi dengan kecepatan udara yang besar.
Learning media acts as a tool to convey knowledge and skills from teachers to students. This study aims to: (1) develop problem solving-based learning media; (2) revealing the feasibility of the problem solving-based air-cooling system practicum learning media that was developed to be applied; (3) revealing the effectiveness of practical learning media based on problem solving of the air conditioner system. This research is learning media development research that refers to the ADDIE development procedure by the branch. The stages in this research include: (1) analysis, (2) design, (3) development, (4) implementation, and (5) evaluation. The subjects of this research trial were limited to 7 students, and the broad trial was 18 students. Collecting power in this study using observations, interviews, documentation, and measurements. The results of this study are as follows: (1) the learning media developed consists of a set of practicum test equipment units equipped with an analysis table for the diagnosis of damage to the air conditioner system. (2) the results of the feasibility assessment by learning media experts are included in the very feasible category with a percentage result of 94.3%; (3) the results of the effectiveness test show that the problem solvingbased learning media developed is effective as seen from the results of student practicum.
Sepeda motor merupakan alat transportasi yang jumlahnya semakin meningkat di Indonesia. Peningkatan jumlah sepeda motor berpengaruh terhadap peningkatan jumlah konsumsi bahan bakar. Peningkatan konsumsi bahan bakar dapat diatasi dengan salah satu cara yaitu melakukan penghematan bahan bakar pada sepeda motor menggunakan teknologi Hidrokarbon Carbon Crack System (HCS). Tujuan dari penelitian ini adalah mendeskripsikan pengaruh penggunaan teknologi HCS terhadap konsumsi bahan bakar sepeda motor Honda MegaproJenis penelitian ini merupakan penelitian eksperimental. Sampel dalam penelitian ini adalah sepeda motor Honda Megapro 150 cc tahun 2004. Teknik pengambilan sampel dalam penelitian ini menggunakan teknik purposive sample. Pengujian dilakukan dengan cara mengukur waktu yang diperlukan mesin untuk menghabiskan bahan bakar dalam volume tertentu pada putaran mesin 1500-6500 rpm dengan selisih setiap pengujian sebesar 500 rpm. Analisa data menggunakan metode deskriptif komparatif. Setelah semua data diperoleh, kemudian hasilnya dibandingkan antara data pengujian konsumsi bahan bakar sepeda motor standar dengan sepeda motor yang menggunakan teknologi HCS.Hasil dari penelitian ini menunjukkan pada putaran mesin antara 1500-6500 rpm menggunakan katalis ganda spiral HCS (panjang 500 mm) dengan satu tabung Pertamax dengan volume satu liter, konsumsi bahan bakar spesifik menurun sebesar 40,21%. Pada putaran mesin yang sama menggunakan katalis ganda spiral HCS (panjang 500 mm) dengan dua tabung Pertamax dengan volume dua liter, konsumsi bahan bakar spesifik menurun sebesar 51,80%. Hasil penelitian menunjukkan bahwa penggunaan katalis ganda pada HCS memiliki pengaruh yang baik terhadap konsumsi bahan bakar. Penggunaan HCS dengan katalis ganda dan menggunakan dua buah tabung bahan bakar dapat lebih meningkatan efisiensi bahan bakar. Kata kunci: hidrocarbon crack system, konsumsi bahan bakar, otomotif.
The alumni gathering for the 25th years Mechanical Engineering of Sanata Dharma triggered the participants to initiate a forum to build communication, synergy and collaboration between alumni and the alma mater as well as informally started the alumni national network. However, four years have passed, the board of management has not been definitively realized. As a result, the initiators still carry out their mandate as ad interim board. This situation is not ideal. As a reflection and evaluation, a regeneration needs to be further conducted to strengthen the collaboration. This paper describes the participation rate of alumni in the formation of the board of management for 2022-2025 period. The result shows that the participation rate increases as the stages ware carried out. In addition, the figure gaining the majority establishes the support.
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