Sungai adalah salah satu jalur masuknya plastik ke lautan. Plastik bersifat presisten dan tahan lama tetapi paparan radiasi ultraviolet serta abrasi fisik mampu memecah plastik menjadi puing-puing kecil berukuran mikro sampai dengan nano yang disebut mikroplastik. Penelitian ini bertujuan untuk menganalisa jenis, bentuk dan jumlah mikroplastik di air dan sedimen Sungai Sei Sikambing Medan. Metode penelitian dilakukan dengan pengambilan sampel air dan sedimen sungai berdasarkan SNI 03-7016-2004 dan sampel merupakan hasil dari gabungan tempat (integrated samples). Pemisahan mikroplastik dilakukan dengan penyaringan, pengancuran senyawa organik, pemisahan berdasarkan berat jenis dan penyaringan menggunakan vacuum. Identifikasi jenis dan bentuk mikroplastik dilakukan dengan menggunakan FTIR dan menganalisa kelimpahan mikroplastik dilakukan dengan menggunakan mikroskop. Hasil penelitian menunjukkan Sungai Sei Sikambing mengandung mikroplastik jenis polietilen, polipropilen dan polisterin dengan bentuk film, fragment, granule, foam dan fiber. Jumlah rata-rata mikroplastik di air Sungai Sei Sikambing adalah 28,6 partikel/250 ml air sungai dan 32,3 partikel/100 g berat kering sedimen Sungai Sei Sikambing.

Home industry is now increasingly in demand by the community as a form of "Usaha Mikro Kecil Menengah (UMKM) " that have simple concepts and promising results. Many business ideas and opportunities that can be realized into a home industry business, one of which is food processing. UMKM have a major contribution to the rolling of the economy of a country, not only as a seed that generates the growth of big business but also provides certain services for the community which for large businesses are considered to be less cost-efficient. The IMO (Ikatan Makanan Minuman Olahan) of Sumatera Utara is one of the communities that oversees several UMKM entrepreneurs spread across Sumatera Utara. Types of snack products that are quite popular are cassava chips, banana chips, and crackers. Almost all chips processing is done by frying. A problem that is often experienced is the level of oil in chips that are still included in the packaging. This is due to the process of draining the oil which is still done manually. It takes a touch of technology to replace the manual process into a mechanical system that is with a spinner or known as a cooking oil drainer. The target and output of this activity is to achieve an increase in the quality of chips production under the IMO through the use of appropriate technology, namely a simple and low-cost oil-spinning machine.

No abstract

Nowadays, business developments are increasingly stringent, even though they are in an economic condition that tends to be unstable due to the impact of the pandemic. This has an impact on business competition that is getting higher and sharper, both in the domestic market and in the international market. Every business in high competition is required to always compete with other companies in the same industry. One way to win the competition or at least survive in the competition is to give full attention to the quality of the products produced by the company and ensure smooth production so that production targets can be achieved. One of the efforts to smooth production is to fix problems that occur in production. The constraint experienced by partners is that the production target is not achieved because the toaster oven stops rotating. Based on the analysis, it was found that this problem was caused by fluctuations in the electric voltage that entered the toaster oven. So based on the survey and discussion conducted by the team, to overcome the problems experienced by partners, the team proposes to design and assemble an Assembled Electrical Voltage Stabilizer for Toaster Ovens. The target and outcome of this activity is to increase the partner's production capacity by using an Electric Voltage Stabilizer.