Judul: The Design of Aloe Vera (Aloe vera L.) Leaf Peeling Machine
Abstrak: Lidah buaya (Aloe vera L.) merupakan komoditas utama di Kota Pontianak, Kalimantan Barat. Banyak pengusaha yang menggunakan lidah buaya sebagai bahan baku. Ada beberapa proses yang harus dilakukan sebelum mendapatkan daging lidah buaya, satu di antaranya adalah pengupasan. Proses pengupasan kulit daun lidah buaya masih dilakukan secara manual. Pengupasan yang dilakukan secara manual memiliki kapasitas yang kecil dan membutuhkan banyak tenaga kerja. Tujuan dari penelitian untuk merancang mesin pengupas kulit daun lidah buaya yang dapat memisahkan kulit dan daging dalam sekali proses. Komponen mesin terdiri dari pengupas pertama, pengupas kedua, saluran keluar, dan rangka. Daun lidah buaya melalui dua proses pengupasan. Kemudian kulit dan daging yang sudah terpisah akan memasuki salurannya masing-masing. Pengupasan menggunakan motor listrik untuk memutar roller pada pengupasan kedua agar daun lidah buaya masuk ke mesin secara otomatis. Hasil pengupasan terbagi menjadi 5 bagian, yaitu dua buah kulit samping, kulit bagian atas, kulit bagian bawah, dan daging lidah buaya. Namun hasil pengupasan masih belum optimal, masih banyak daging lidah buaya yang menempel pada kulitnya. Selain itu, slip yang terjadi pada roller pengupas masih besar., Aloe vera (Aloe vera L.) is a main commodity in Pontianak City, West Kalimantan. Many entrepreneurs use the aloe vera leaf as the main raw material. Several processes must be done before using the gel from aloe vera, one of which is peeling. The peeling process of aloe vera leaves is still done manually. Manual peeling has a low capacity and requires a lot of labour. This study was aimed to design a peeling machine for aloe vera leaf that can separate the skin and gel in one process. The engine components consist of the first peeler, the second peeler, the outlet and the frame. Aloe vera leaves went through two peeling processes. Then the separated skin and gel were passed into different channels. The peeling machine used an electric motor to rotate the roller in the second peeling so that the aloe vera leaves enter the machine automatically. The prototype of the machine has been designed and built. The peeling results were divided into 5 parts, namely two side skins, top skin, bottom skin, and aloe vera gel. However, the peeling results were still not optimal, there were remained aloe vera gel attached to the skin. In addition, the slip that occurs on the peeling roller was still high.
Keyword: aloe vera gel, aloe vera leaf, leaf skin, design, peeling machine

Judul: Modification and Performance Analysis of Aloe Vera Leaf Peeling Machine (Aloe vera L.)
Abstrak: Mesin pengupas daun lidah buaya (Aloe vera L.) adalah sebuah inovasi teknologi yang dirancang untuk mempermudah dan meningkatkan efisiensi dalam proses pengupasan daun lidah buaya secara otomatis. Ada beberapa mesin pengupas daun lidah buaya seperti rancangan Shiddiq (2022), namun diperlukan pengembangan untuk mendapatkan hasil pengupasan yang optimal. Tujuan dari penelitian ini adalah untuk mengembangkan mesin pengupas daun lidah buaya yang dapat mengatasi tantangan dalam proses pengupasan secara manual. Dalam penelitian ini, dilakukan analisis terhadap kinerja mesin pengupas, rendemen hasil pengupasan, dan standar deviasi kulit lidah buaya hasil pengupasan. Sebagai bahan perbandingan hasil pengupasan mesin, dilakukan pengupasan manual menggunakan pisau dan membandingkan kedua hasil pengupasan. Hasil penelitian menunjukkan bahwa mesin pengupas daun lidah buaya yang dikembangkan mampu meningkatkan efisiensi dalam proses pengupasan. Modifikasi roller dapat menurunkan slip pada mesin hingga 23,04% dari rancangan sebelumnya. Namun mesin menghasilkan rendemen yang kecil jika dibandingkan dengan pengupasan manual, sehingga masih banyak gel menempel pada kulit lidah buaya. Penelitian dan pengembangan lebih lanjut di bidang ini diharapkan dapat meningkatkan efisiensi dan efektivitas proses pengupasan daun lidah buaya, serta menghasilkan solusi yang berkelanjutan bagi industri lidah buaya., The Aloe vera L. leaf peeling machine is a technological innovation designed to simplify and enhance efficiency in the process of peeling Aloe vera leaves automatically. There are several Aloe vera leaf peeling machines, such as the design by Shiddiq (2022), however, further development is needed to achieve optimal peeling results. The purpose of this research is to develop an Aloe vera leaf peeling machine that can address the challenges of manual peeling. In this study, an analysis was conducted on peeling machine performance, peeling yield, and standard deviation of Aloe vera leaf peel skin. As a comparison material for machine peeling results, manual peeling was performed using a knife, and both peeling results were compared. The research results indicate that the developed Aloe vera leaf peeling machine can enhance efficiency in the peeling process. Roller modification can reduce slip in the machine by up to 23,04% from the previous design. However, the machine produces a lower yield compared to manual peeling, resulting in a significant amount of pulp remaining on the Aloe vera leaf skin. Further research and development in this field are expected to improve the efficiency and effectiveness of the Aloe vera leaf peeling process, while also providing sustainable solutions for the Aloe vera industry.
Keyword: peeling machine, aloe vera, modification, slip, manual

Judul: Pengaruh Pairing pada Isotop Sn dengan Menggunakan Pemodelan Sembilan Tingkat Energi
Abstrak: Formation of the neutron-rich tin isotopes (Sn isotopes) is the one of the interesting topics in the field of nuclear reaction, especially regarding the stability of the heavy nuclei. Calculations of total energy using the BCS approach using five energy levels can only calculate the total energy up to Sn50132. On the other hand, the experiment continues and has exceeded the formation of isotopes. Therefore, there is need for a new model to accomadate more neutrons. In this research, Sn isotopes is modelled using nine energy levels and constant interaction potential to explain the pairing phenomenon up to Sn50154. However, to obtain more accurate results, other methods to minimize the differences with the experimental results are clearly needed here.
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