Proses pengecatan merupakan proses pelapisan dengan tujuan melindungi dan esetika dari produk yang dilapisi. Agar didapatkan permukaan hasil pengecatan yang bagus diperlukan kondisi permukaan yang bagus pula. Kondisi permukaan yang ada sedikit cacat akan tertutupi bila ketebalan lapisan cat yang menempel pada produk cukup tebal. Ketebalan lapisan cat ditentukan oleh jarak penyemprotan, kecepatan langkah ayun, tekanan spray gun dan tekanan tabung residu. Campuran bahan cat dengan pengencer juga berpengaruh pada ketebalan lapisan namun setiap produsen bahan cat telah memberikan rekomendsi perbandingan campuran yang terbaik. Peneliti menentukan jarak penyemprotan 100;150;200 mm, kecepatan langkah ayun 0,381;0,448 m/s, tekanan spray gun 10;12 Psi dan tekanan tabung residu 25;20 Psi. Menggunakan thickness gauge didapatkan ketebalan cat sebesar 0,1 mm pada jarak penyemprotan 100 mm, kecepatan langkah ayun 0,381 m/s, tekanan spray gun 12 Psi dan tekanan tabung residu 20 Psi.

ABSTRAKProgram Studi (prodi) DIII Teknik Mesin adalah salah satu prodi di Jurusan Teknik Mesin Universitas Negeri Surabaya (Unesa) yang memiliki penjurusan otomotif dan produksi. Jumlah mahasiswa yang masuk di prodi ini setiap tahun berkisar 70 orang dan mereka dibagi dalam dua kelas. Pada akhir semester empat, mereka akan dibagi menjadi dua penjurusan seperti di atas berdasarkan kemampuan akademik dan minat masing-masing mahasiswa. Jumlah dosen tetap yang mengajar dalam prodi ini adalah 10 orang dengan bidang keahlian otomotif, produksi, konversi energi dan sistem manufaktur. Jumlah ini telah memenuhi standar minimal jumlah dosen dalam satu prodi yaitu enam orang. Dari hasil Laporan Kinerja Dosen (LKD) pada periode empat tahun ini didapatkan hasil bahwa Beban Kinerja Dosen (BKD) mengalami kelebihan di atas ketentuan standar BKD yang minimalnya 12 sks (sistem kredit semester) dan maksimalnya 16 sks. Dari ketiga unsur tri dharma yang dinilai yaitu pengajaran, penelitian dan pengabdian masyarakat, ada kenaikan berbeda di setiap unsurnya yang dialami oleh masing-masing dosen sehingga memengaruhi total sks yang diizinkan oleh BKD standar setiap semesternya. Dari hasil yang telah didapatkan, LKD masing-masing dosen mengalami kenaikan di atas rata-rata 12 SKS namun masih terhitung normal. Juga nampak distribusi dosen pada masing-masing prodi kurang merata atau masih banyak dosen mengajar pada prodi yang bukan home base-nya. Sehingga hasil analisis sementara dapat ditarik kesimpulan bahwa masih diperlukan tambahan dosen baru yang berkonsentrasi pada salah satu prodi yang ada di jurusan.                                                                                                                 Kata Kunci: BKD, LKD, otomotif, produksi, sks. ABSTRACTDIII Mechanical Engineering study program is one of study programs in Mechanical Engineering Department, State University of Surabaya (Unesa) that has automotive and production majors. The number of students who enter in this program are around 70 students per year and they have been divided into two groups. In the end of fourth semester, they will be divided into the majors above which is based on their academic abilities and interests. The number of lecturers who lectured in this program are 10 peoples with the areas of expertise are automotive, production, energy conversion and manufacturing systems. These numbers have been fulfilled minimal numbers of lecturer in a study program that are six peoples. Based on Lecturer Performance Report (LKD) in this four years period, it is obtained that Lecturers Performance Burden (BKD) have increase above BKD provision that has 12 sks (credit transfer system) minimum and 16 sks maximum. From the three elements of Tridharma, that are education, research and community services, there had different increasing in each element that had experienced by each lecturer as of influencing total sks which are allowed by BKD provision per semester. From the results which have been obtained, the LKD on each lecturer goes up on the above 12 sks average but it is still normal. Also it seem that lecturer distribution in each study program did not equal or many lecturers gave lecturing at study program that it is not their home base. Finally the whilst result that can be attracted is the department still needs new lecturer that focus in one of the study programs in the department.                                                                                                 Keywords: automotive, BKD, LKD, production, sks.

In this paper, thermal performance analysis of 4 m2 solar dish collector is presented.The focal image characteristics of the solar dish are determined to propose the suitable design of a receiver. A flat plate was used for the receiver to measure flux distribution in the focal region. The measurement had been done in the midday. Intercept factor based on this distribution had been calculated and was obtained to calculate thermal efficiency after total heat loss was described. From the experiment, total heat loss was formed by conductive and radiative in the receiver. The results showed that the increase in total heat loss followed the increase in receiver temperature and it caused a decrease in thermal efficiency. On the peak of the measurement or in midday, receiver temperature can achieve 138°C and it gave around 1200-Watt heat loss and it was dominated by radiative heat loss for around 80%. The thermal efficiency of the system due to flux distribution measurement in the focal region was above 70% and it was classified as high average but we needed to cover this flux up so it did not lose a lot of heat. Cavity aperture would keep around 20% total heat loss and it minimized radiative heat loss from the flux. The design of cavity aperture was the next discussion to insulate thermal heat reflection of the parabolic dish system from high radiative heat loss.©2020. CBIORE-IJRED. All rights reserved

Kurikulum yang diterapkan program studi S1 Teknik Mesin Unesa adalah kurikulum merdeka belajar dengan berfokus pada luaran atau Outcome Based Education (OBE). Karena berdasar luaran, maka luaran berupa pengetahuan (knowledge) dan keahlian (skill) harus dapat diukur (concretely measurable). Untuk mendapatkan hasil pengukuran yang baik diperlukan model evaluasi yang sesuai. Tujuan pada penelitian ini yaitu menemukan model evaluasi pembelajaran dengan basis OBE yang sesuai untuk diterapkan pada program studi S1 Teknik Mesin Unesa. Jenis dari penelitian yaitu kualitatif yang menggunakan metode FGD atau Focus Group Discussion sebagai metode pengumpulan datanya. Luaran dari hasil penelitian ini adalah metode evaluasi pembelajaran berbasis OBE. Capaian pembelajaran lulusan atau program learning otcome (PLO) Program Studi S1 Teknik Mesin Unesa dibuat mengikuti standar yang telah ditentukan oleh Badan Kerjasama Teknik Mesin (BKSTM), lembaga akreditasi, dan dapat memenuhi tujuan program studi (PEO). PLO program studi S1 Teknik Mesin Unesa berjumlah 10 poin yang mencakup kompetensi pengetahuan dan keterampilan. Model evaluasi pembelajaran mengukur ketercapaian PLO oleh matakuliah dengan pembagian kriteria excellent, very good, good, very satisfy, satisfy, fair, poor, very poor, fail. Kata kunci: Outcome Based Education, evaluasi, pembelajaran.

The evaporation process in the nozzle spray system of a cooling tower was the main object of study in order to determine its performance. This process involves liquid water in small size, usually at the droplet level. At this level, parameters that affect the droplet size, such as capacity, air velocity in the chamber, water pressure at the nozzle, atmospheric temperature, etc., influence the process of heat and mass transfer. In this study, capacity and fan rotation were varied to obtain a graph showing the evaporation. Radius, velocity, mass and temperature graphs and rate graphs were obtained from mathematical modeling of the governing equations. From the results it appears that evaporation occurs at a capacity of 6 liter per minute and above, but this requires further proof of the evaporation process along with the height of the tower, which will be the subject of a future study.

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This study examines that hens' age and egg freshness affect water activity (aw) and moisture content (MC). Both also impress the quality and shelf life of choux pastry. Eggs are purchased freshly hatched and stored at ambient temperature for a few days, as is customary. This study measured egg quality before the dough-making process. Then, this study made choux dough by the same recipe and time and grouped it by the hen's age. This study also measured the choux surface temperature simultaneously after the baking process finished. Egg quality indicated albumen freshness, as described by weight loss and Haugh Unit (HU) graphs. And the grade fell over the storage time, as the falling weight loss and HU charts showed. The surface temperature indicates the MC value because temperature affects the water content in the choux. The MC graphs decreased at ten days for eggs of 5-and 16-week hens, while for 22week hens, it did not decrease. Meantime, the relative humidity of the baker explains the aw of the choux. The aw charts decreased at 20 days for eggs of 16-and 22-week hens, while for the 5-week hens, it dropped at 30 days. Egg freshness affects MC and aw. The longer the egg storage time, the higher the MC and aw. Low MC and aw charts indicate high choux pastry quality and long choux shelf life. Young hens have a longer egg storage time.

Significance changes are taking place at universities in Indonesia since the implementation of the MBKM curriculum. MBKM requires universities to provide internships for students outside the study program equal to twenty credits for three semesters. It makes them confused because they are more familiar with theoretical lectures than practical ones. The same thing happened at the State University of Surabaya. Although universities have issued guidelines for implementing MBKM, many study programs still need to implement them. They assume that the twenty credits of the internship will reduce the theory, increase the burden on students to graduate, and extend the student's study period. The apprentice reduces class to twenty credits in the sixth semester, while it expands to PI and PLP in the seventh and eighth semesters, respectively. MPK appears as a course that accommodates internships in the sixth semester. MPKs classify students' abilities during internships. The evaluation of MPK appeared in the last two semesters of the mechanical engineering education study program. The scores that students got on MPK were higher than in theory, and this caused an increase in their GPA. Not only it, but the MPK scores also increased from the first semester to the second semester. It shows that students' skills improve with internships because the evaluation was based on the number of tasks completed by students.