<p>Di setiap kota atau perumahan masalah sampah menjadi urusan serius. Dampak buruk dari sampah berupa polusi udara, pencemaran tanah dan air sampai gangguan kesehatan. Salah satu sumber sampah adalah rumah tangga. Untuk sampah non organik, secara umum sebagian masyarakat sudah menangani dengan cara dipungut oleh para pemulung atau dikumpulkan oleh pemilik rumah untuk kemudian dijual kepada para pengepul. Masalah ada pada sampah organik.Sampah organik perlu dihancurkan untuk bisa dimanfaatkan sebagai kompos atau sumber energi dalam bentuk biogas. Metode yang telah dilakukan ini menghasilkan prototipe alat penghancur sampah organik yang baik dari sisi dimensi dan daya listrik memungkinkan dipakai di setiap rumah keluarga Indonesia. Ukuran alat yang dibuat adalah: Tinggi 37 cm, Lebar 20 cm, Panjang 23 cm. Berat total 5 Kg. Alat ini juga bisa dioperasikan dengan menggunakan sumber listrik dari rumah tipe RS karena menggunakan motor listrik 400 Watt. Kapasitas pencacahan dari alat yang dihasilkan dari penelitian ini adalah10 Kg/jam.</p>

Sekolah Tinggi Teknologi Muhammadiyah Cileungsi has the duty of the College Dharma Chess which includes education and teaching activities, research and community service, and AIKA and Al-Islam. The purpose of this research is to teach writing methods to teachers, to facilitate teaching and learning. The method used in this research are identification of the problem, conduct a field survey, finding material, and direct training  to representatives of each high school / vocational school teachers. In this training participants were given the easiest writing method. From telling great writers in life in the world, where they can exist in writing. Then the participants were asked to write an article to get used to writing. After the end of the activity, participants are asked to share in the group or discuss directly with the speaker, so that the writing that has been made can be immediately reviewed. Solutions in writing training, taking the time to write, and frequent discussions with people who often write. The result of this research is the teachers know writing techniques to develop teaching activity in the classroom.

Kerusakan pada alat ukur suhu infrared thermometer mempengaruhi kualitas pengukuran, yang disebabkan jatuh, terbentur, maupun umur dari alat ukur. Kalibrasi alat ukur dibutuhkan untuk mengetahui akurasi terhadap hasil pengukuran. Tujuan dari penelitian ini merancang alat kalibrasi pengukur suhu berbasis digital. Metode yang dilakukan pembuatan alat kalibrasi pengukur suhu berbasis digital temperatur menggunakan VDI 2221 (verein deutscher ingenieure), persatuan insinyur Jerman. Dari hasil penelitian yang dilakukan alat kalibrasi pengukur suhu mendapatkan data koreksi sebesar 0.1 oC. Alat kalibrasi dengan benda kerja didapatkan nilai 0.4 oC. Adapun hasil pengujian sesuai dengan fungsinya dengan menggunakan alat pemanas temperatur 50oC, 75oC, 100oC. ditemperaturr 50oC, 75oC, 100oC

Plastic injection molding process in the manufacture of air gun components, namely butt stock gun, and pump handles, product defects are still often found, some of the causes include: burning (burning), lack of material (short shots), and cracking products (cracking), this resulting in not achieving production targets and sales targets. The purpose of this research is to find out the root cause of failure of air gun component products. The method in this problem, plastic injection materials need to be added synthetic fibers to get the visual appearance, tensile strength, modulus of elasticity, and the desired hardness, by utilizing recycled material products. The results showed visually the addition of recycled materials and synthetic fibers did not affect appearance, in economic terms the more recycled materials added the cheaper the cost of material procurement. The addition of recycled material weighing 50% of the original material and 2.5% synthetic fiber from the total amount of material to be processed, is expected to increase the tensile strength, modulus of elasticity and desired hardness. Therefore, this addition of fiber obtains a more accurate comparison of product quality and quantity with a lower product defect rate, and is able to reduce production costs.

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