Pengaruh Suhu Pada Pengukuran Jarak Menggunakan Sensor Ultrasonik SR04/05 Berbasis Instrumentasi Maya

Penelitian ini menjelaskan tentang bagaimana pengaruh suhu pada perambatan gelombang ultrasonik di udara. Hal ini berkaitan dengan verifikasi keakuratan jarak pengukuran sensor ultrasonic sebagai alat ukur. Sensor yang digunakan dalam instrumentasi maya berupa sensor ultrasonik SR 05/04 sebagai sensor pengukur jarak dan sensor suhu LM35 digunakan sebagai acuan untuk mengukur suhu lingkungan. Tujuan penelitian ini adalah memverifikasi apakah kecepatan gelombang utrasonik di udara berpengaruh terhadap perubahan suhu serta mempengaruhi pengukuran jarak. Pada penelitian ini didapatkan hasil rata-rata nilai simpangan standar deviasi pengukuran jarak terkoreksi suhu adalah 0,114 sedangkan pengukuran jarak tanpa terkoreksi suhu adalah 0,1075. Hal ini menunjukan bahwa kenaikan perubahan suhu walaupun 1°C dapat mempengaruhi sensor ultrasonik dalam mengukur jarak. Secara umum instrumentasi maya mampu bekerja dan membaca besaran sensor-sensor serta melakukan perhitungan dan menampilkan data dengan sangat baik

Pengujian Kadar Zat Terlarut Memanfaatkan Sistem Instrumentasi Maya untuk Penentuan Kualitas Air Bersih

Telah dilakukan perancangan dan pembuatan sistem instrumentasi dan akuisisi data uji kandungan zat yang terlarut dengan menggunakan prinsip konduktivitas berbasis LabVIEW dan mikrokontroler. Sistem instrumentasi ini mampu mengakuisisi data dengan mengkombinasikan LabVIEW sebagai program akuisisi data pengukuran sedangkan mikrokontroler beserta sensor koduktivitas berperan sebagai tranduser untuk mengubah besaran fisis menjadi sinyal listrik berupa tegangan. Hasil data analog zat yang terlarut akan dikirim oleh mikrokontroler ke LabVIEW melalui komunikasi serial dengan USB port yang dihubungkan ke komputer yang telah terinstall aplikasi LabVIEW dengan tambahan konfigurasi VISA untuk port serial, kemudian data diolah dan ditampilkan pada front panel pada LabVIEW dengan tujuan sebagai proses monitoring dan pengukuran kualitas air pada industri yang dapat diatur sesuai tampilan yang diinginkan pengguna (User Friendly) dibandingkan Penggunaan LCD bersifat terbatas pada fitur tampilan (Front Panel) dan Proses Pengolahan data pada blok diagram. Sistem instrumentasi yang telah dibuat memiliki nilai koefisien determinasi ( R2 ) adalah 0,955 yang menunjukan bahwa hasil pengukuran dari sistem instrumentasi mampu mendapatkan hasil pengukuran yang baik. Hasil penelitian kandungan zat yang dilarutkan dalam air yang disebut nilai Total Dissolve Solid (TDS) masih perlu pengembangan sistem dari segi kuantitas jumlah sensor untuk mengukur lebih banyak banyak lagi indikator yang mempengaruhi kualitas air bersih

Design and Build of a Multifunctional Portable Fertilizer

Pangestu Farmer Group is a farming group in Pandanrejo Village, Batu Regency, that has high-quality sweet corn as a strategic asset with often fluctuating yields. Consequently, the market demand cannot be met. The main problem of fluctuations in corn yields is due to improper fertilization methods. Applying liquid fertilizer during the rainy season can result in nutrients being washed away by rainwater, but when granular fertilization is used, this results in increased costs and labour. A solution is needed to solve this problem so that the fertilization process is correct, and the timing of fertilization and labour costs can be reduced. Therefore, a portable fertilizing technology based on spring valves is needed. The goal is to develop and manufacture a valve spring-based portable fertilizer that can increase the effectiveness and efficiency of the fertilization process. The comparison of type 1 and type 2 fertilizers lies in the raw material used. Commercially available hand sprayer for comparison in design. Ergonomic analyses are also considered in the design of the fertilizer, both in terms of user safety and comfort. The method in this study is to design tools with power and ergonomic calculations, manufacture tools at Sahabat Teknik Workshop, and conduct tests at Brawijaya University's Agricultural Power and Machinery Laboratory. The test results for portable fertilizer types 1 and 2 show great advantages, namely, increase in working capacity 20 times to 1.2 ha/hour, reduce the number of workers from 7 people/ha to 5 people/ha, reduce operating time, reduce labour costs and increase farmers' income by up to 57, 72%/year

YOUMARES 9 - The Oceans: Our Research, Our Future

This open access book summarizes peer-reviewed articles and the abstracts of oral and poster presentations given during the YOUMARES 9 conference which took place in Oldenburg, Germany, in September 2018. The aims of this book are to summarize state-of-the-art knowledge in marine sciences and to inspire scientists of all career stages in the development of further research. These conferences are organized by and for young marine researchers. Qualified early-career researchers, who moderated topical sessions during the conference, contributed literature reviews on specific topics within their research field

YOUMARES 9 - The Oceans: Our Research, Our Future

This open access book summarizes peer-reviewed articles and the abstracts of oral and poster presentations given during the YOUMARES 9 conference which took place in Oldenburg, Germany, in September 2018. The aims of this book are to summarize state-of-the-art knowledge in marine sciences and to inspire scientists of all career stages in the development of further research. These conferences are organized by and for young marine researchers. Qualified early-career researchers, who moderated topical sessions during the conference, contributed literature reviews on specific topics within their research field

Selected Papers from XVI MaNaPro and XI ECMNP

The oceans harbor the majority of the Earth´s biodiversity. Marine organisms/microorganisms provide a diverse array of natural products, which are important sources of biologically active agents with unique chemical structures and a broad range of medical and biotechnological applications. The XVI MaNaPro and XI ECMNP conferences aim to present advances and future perspectives on marine natural product research to the scientific community by gathering scientists who work in marine chemistry and related scientific fields from all over the world and at different seniority levels. This Special Issue was organized on the occasion of the 2nd joint XVI MaNaPro and XI ECMNP meeting (http://wmnp2019.ipleiria.pt/) held in Peniche, Portugal, in 2019. It comprises 12 original research articles that exemplify research performed in the scope of the conference topic

YOUMARES 9 - The Oceans: Our Research, Our Future

This open access book summarizes peer-reviewed articles and the abstracts of oral and poster presentations given during the YOUMARES 9 conference which took place in Oldenburg, Germany, in September 2018. The aims of this book are to summarize state-of-the-art knowledge in marine sciences and to inspire scientists of all career stages in the development of further research. These conferences are organized by and for young marine researchers. Qualified early-career researchers, who moderated topical sessions during the conference, contributed literature reviews on specific topics within their research field

11th International Coral Reef Symposium Proceedings

A defining theme of the 11th International Coral Reef Symposium was that the news for coral reef ecosystems are far from encouraging. Climate change happens now much faster than in an ice-age transition, and coral reefs continue to suffer fever-high temperatures as well as sour ocean conditions. Corals may be falling behind, and there appears to be no special silver bullet remedy. Nevertheless, there are hopeful signs that we should not despair. Reef ecosystems respond vigorously to protective measures and alleviation of stress. For concerned scientists, managers, conservationists, stakeholders, students, and citizens, there is a great role to play in continuing to report on the extreme threat that climate change represents to earth’s natural systems. Urgent action is needed to reduce CO2 emissions. In the interim, we can and must buy time for coral reefs through increased protection from sewage, sediment, pollutants, overfishing, development, and other stressors, all of which we know can damage coral health. The time to act is now. The canary in the coral-coal mine is dead, but we still have time to save the miners. We need effective management rooted in solid interdisciplinary science and coupled with stakeholder buy in, working at local, regional, and international scales alongside global efforts to give reefs a chance.https://nsuworks.nova.edu/occ_icrs/1000/thumbnail.jp

11th International Coral Reef Symposium Abstracts

https://nsuworks.nova.edu/occ_icrs/1001/thumbnail.jp