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Purpose This paper aims to investigate the dimensional accuracy consisting of thickness, grip section width, full length, circularity, cylindricity and surface finish of printed polyurethane dog-bone samples based on American Society for Testing and Materials (ASTM) D638 type V standard, which were optimally printed by fused deposition modelling (FDM). Design/methodology/approach The experimental approach focuses on determining main effects of printing parameters, including nozzle temperature, infill percentage, print speed and layer height on dimensional error and surface finish of the printed samples, followed by the confirmation tests to warrant the reproducibility of experimental results. Findings This study shows that layer height has the most significant impact on dimensional accuracy and surface finish of printed samples compared to other printing parameters, whereas infill density has no significant effect on all sample dimensions. Originality/value This paper presents a comprehensive study relating to various dimensional accuracies in terms of full length, grip section width, thickness, circularity, cylindricity and surface finish of dog-bone samples printed by FDM to improve the printability and processibility via additive manufacturing.

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Wind speed, rainfall, solar radiation, temperature, relative humidity, and soil acidity are the components affecting climate, whereas climate has a major influence in agriculture. This study aims to develop measurement technology of several components which give influence to the climate, such as wind speed, rainfall, solar radiation, temperature, relative humidity, and soil acidity. Those sensors are integrated in a prototype called the Portable Mini Weather Station. This research is a Competitive Grant Program funded by Kemristekdikti for two years. The research method applied is the design and manufacture of prototype as well as its performance test in the first year. While in the second year is an improving this model by adding solar cells and dry battery, so that, this device can recharge or generate power independently to fulfill its operational needs. Besides, there is the addition of logger data along with module modification that translates inputs from several sensors to the LCD. Then, the weather information will be stored into the logger data.Keywords - Portable Mini Weather Station, components affecting climate, performance test, prototype, logger data

Gas-gas rumah kaca (GRK) merupakan gas-gas di atmosfer yang memiliki efek penyelimutan karena gas-gas tersebut menyerap panas yang dilepaskan oleh permukaan bumi. GRK yang dipengaruhi langsung oleh kegiatan manusia adalah karbon dioksida (CO2), metan (CH4), nitrous oksida (N2O), klorofluorokarbon (CFC) dan ozon.Metode yang diterapkan dalam penelitian ini adalah survei lapang untuk mengumpulkan informasi mengenai limbah industri manufaktur di wilayah Jawa Timur, selanjutnya dihitung emisi GRK nya dan dibandingkan dengan Baku Mutu Emisi untuk menentukan apakah emisi yang dihasilkan oleh industri manufaktur itu masih di bawah ambang ataukah sudah melampau ambang batas.Dari hasil perhitungan dan analisa dapat diketahui bahwa limbah yang dihasilkan oleh beberapa industri di Jawa Timur menyatakan bahwa emisi GRK industri tersebut berada di bawah ambang batas yang telah ditentukan.