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Hasil Pencarian

Ditemukan 49 dokumen yang sesuai dengan query
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Abstrak :
Aimed to be a snapshot of progress in the development of a variety of sensors, used in different application fields, this postgraduate-level book combines the work of leading academic authors. The authors of each chapter describe the principles of operation, characteristics and applications of the sensor-type under consideration, but in addition feature recent advances and prospects for future development. These are areas where advances are ongoing so that there is considerable scope for future development activity. Such sensors are applied in many and varied fields of science, measurement and technology.
London: Institution of Engineering and Technology, 2000
e20452169
eBooks  Universitas Indonesia Library
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Abstrak :
We present the emission behavior of an elastic fluorescent material based on silicone doped wirh rhodamine 6G at 1.2 x103 M..Fluoresence properties of the material are modified by deformation, suggesting possible use of the material as a strain sensor....
Artikel Jurnal  Universitas Indonesia Library
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Arif Seno Adji
Abstrak :
ABSTRACT
Providing accurate information on suitable multispectral satellite sensors for mapping coral reefs in Indonesia is a challenge for coastal remote-sensing experts. As coral reefs vary in spatial extent, shape, length, perimeter and/ or distance to shore, the mapping of coral reefs will need different satellite sensors depending on the objectives and the kind of information required. This work compares the suitability of two kinds of multispectral satellite sensors for mapping coral reefs in Indonesia, high and moderate spatial resolution. This was done through a case study of Wakatobi Marine National Park since that represents many types of coral reef in Indonesia (fringing, barrier, atoll, and patch). Indonesian coral reef shapefile data 2010 was downloaded from UNEP (United Nations Environment Programme) website, and Landsat 7 ETM + images, path/row 112/064 was used to determine the terrestrial area of Wakatobi Islands. Both high and moderate spatial resolution sensors are suitable for mapping the benthic communities and geomorphic zones on coral reefs. The former are more accurate but they are also much less cost-effective, especially over large areas.
Jakarta: LIPI Press, 2014
550 MRI 39:2 (2014)
Artikel Jurnal  Universitas Indonesia Library
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Nag, Anindya
Abstrak :
This book presents recent advances in the design, fabrication and implementation of flexible printed sensors. It explores a range of materials for developing the electrode and substrate parts of the sensors, on the basis of their electrical and mechanical characteristics. The sensors were processed using laser cutting and 3D printing techniques, and the sensors developed were employed in a number of healthcare, environmental and industrial applications, including: monitoring of physiological movements, respiration, salinity and nitrate measurement, and tactile sensing. The type of sensor selected for each application depended on its dimensions, robustness and sensitivity. The sensors fabricated were also embedded in an IoT-based system, allowing them to be integrated into real-time applications.
Switzerland: Springer Nature, 2019
e20509415
eBooks  Universitas Indonesia Library
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Lee, James
Abstrak :
Drawing on 15 years of experience in the development and use of wearable sensors in sports science, this book bridges the gap between technical research and the widespread adoption of inertial sensors in biomechanical assessment and ambulatory studies of locomotion. It offers a no-nonsense guide to using inertial sensors for readers from the sports science disciplines who may be unfamiliar with the terms, concepts and approaches that lead to these sensors successful use. At the same time, the book introduces readers with a technical background, e.g. in engineering, to sport science methodologies that can provide valuable insights into the use of sensors in a practical environment that extends well beyond bench testing.
Singapore: Springer Nature, 2019
e20509480
eBooks  Universitas Indonesia Library
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Abstrak :
This book gathers the best papers presented at the Fourth Italian National Conference on Sensors, held in Catania, Italy, from 21 to 23 February 2018. The book represents an invaluable and up-to-the-minute tool, providing an essential overview of recent findings, strategies and new directions in the area of sensor research. Further, it addresses various aspects based on the development of new chemical, physical or biological sensors, assembling and characterization, signal treatment and data handling. Lastly, the book applies electrochemical, optical and other detection strategies to relevant issues in the food and clinical environmental areas, as well as industry-oriented applications.
Switzerland: Springer Nature, 2019
e20509813
eBooks  Universitas Indonesia Library
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Abstrak :
This book provides an overview of modern sensing technologies and reflects the remarkable advances that have been made in the field of intelligent and smart sensors, environmental monitoring, health monitoring, and many other sensing and monitoring contexts in today’s world. It addresses a broad range of aspects, from human health monitoring to the monitoring of environmental conditions, from wireless sensor networks and the Internet of Things to structural health monitoring. Given its breadth of scope, the book will benefit researchers, practitioners, technologists and graduate students involved in the monitoring of systems within the human body, functions and activities, healthcare technologies and services, the environment, etc.
Switzerland: Springer Cham, 2019
e20502442
eBooks  Universitas Indonesia Library
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Hendriyanto Haditjahyono
Abstrak :
Penelitian ini bertujuan untuk mengoptimalkan performance dari peralatan yang digunakan dalam pembuatan lapisan tipis (film), yang meliputi catu daya evaporator, pengukur tekanan, pengukur temperatur dan pengukur tebal lapisan tipis, agar dapat bekerja secara terintegrasi dan terkendali.

Beberapa hal yang dilakukan dalam penelitian ini adalah mendisain dan membuat rangkaian pengendali temperatur, memperbaiki rangkaian pengukur tekanan, serta memodifikasi rangkaian catu daya evaporator agar dapat dikendalikan secara otomatis oleh pengukur laju evaporasi.

Pada akhir penelitian ini:

1. Temperatur lapisan tipis (film) selama evaporasi dapat dijaga konstan pada temperatur tertentu yang diinginkan dengan fluktuasi ± 5 %.

2. Tekanan ruang vakum dapat diukur menggunakan sebuah pengukur tekanan, baik untuk mengukur tekanan yang lebih besar dari 10-3 mbar dengan metode termal maupun tekanan yang lebih kecil dari 10-3 mbar dengan metode ionisasi. Pergantian dua metode pengukuran tekanan tersebut berlangsung secara otomatis.

3. Laju evaporasi, proses pemanasan awal (pre deposisi) dan tebal akhir lapisan tipis yang diinginkan dapat diprogram sebelumnya. Daya listrik yang diberikan catu daya ke evaporator diatur sepenuhnya oleh rangkaian pengendali.

Oleh karena proses pembuatan lapisan tipis dengan cara evaporasi termal ini bekerja secara otomatis maka kualitas lapisan tipis yang dihasilkannya akan lebih baik dan bersifat repetitif.
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1999
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
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Tri Yuliani
Abstrak :
Penelitian ini mengembangkan pembuatan biosensor elektrokimia menggunakan nanopartikel core-shell Fe3O4@Au yang dimodifikasi hemoglobin pada Screen Printed Carbon Electrode (SPCE) untuk mendeteksi akrilamida. Fe3O4NP (~4,9 nm) dan core-shell Fe3O4@Au (~5-6,4 nm) berhasil disintesis melalui metode dekomposisi termal. Hasil ini dikonfirmasi oleh analisis UV-Visible Spectrometer (UV-Vis), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) dan Transmission Electron Microscopy (TEM). Studi awal elektrokimia hemoglobin optimum didapatkan pada ABS 0,1 MpH 6 dengan konsentrasi optimal hemoglobin sebesar 2 mg/mL. Fe3O4@Au yang termodifikasi Hb memiliki ukuran yang lebih besar, dikarakterisasi dengan Scanning Electron Microscopy (SEM), FTIR, dan Zeta Potensial. Kinerja Fe3O4@Au/Hb dievaluasi untuk mendeteksi akrilamida dilakukan dengan metode Cyclic Voltammetry (CV) pada rentang potensial -0,8-0,8 V, scanrate 50 mV/s didapatkan koefisien regresi linear R2 = 0,98 pada rentang konsentrasi 0-1 μM dengan Limit of Detection (LOD) sebesar 0,136 μM dan sensitivitas sebesar 0,4411 μA/μM. Selain itu, studi interferensi dilakukan untuk beberapa senyawa sederhana lainnya seperti asam askorbat, melamin, glukosa, kafein dan natrium asetat. Pengukuran akrilamida pada real sampel berupa kopi bubuk dilakukan secara elektrokimia dengan biosensor ini dan divalidasi dengan metode standar High Performance Liquid Performance (HPLC).
This work reports an investigation on the fabrication of electrochemical biosensor based on hemoglobin-modified core-shell Fe3O4@Au nanostructures on screen printed carbon electrode for the detection of acrylamide. Here, both Fe3O4NP (~4.9 nm) and core-shell Fe3O4@Au (~5-6.4 nm) nanostructures were successfully synthesized via thermal decomposition method. These results are discussed by analysis of UV-Visible Spectrometers (UV-Vis), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Transmission Electron Microscopy (TEM). Preliminary electrochemical investigation at ABS pH 6 also revealed that the optimum amount of hemoglobin immobilization were obtained at ABS 0.1 M pH 6 with an optimal hemoglobin concentration of 2 mg/mL. Hb modified Fe3O4@AuNP has a larger size, characterized by Scanning Electron Microscopy (SEM), FTIR, and Zeta Potential. The performance of Fe3O4@Au/Hb was evaluated to detect acrylamide using the Cyclic Voltammetry (CV) method in the potential range of -0.8-0.8 V, a scanrate of 50 mV/s obtained a linear regression coefficient R2=0.98 in the concentration range 0-1 μM with a Limit Detection (LOD) 0.136 μM and sensitivity 0.4411 μA/μM. In addition, studi interference is made for a number of simple compounds such as ascorbic acid, melamine, caffeine and sodium acetate. The measurement of acrylamide in real samples consisting of ground coffee was carried out by electrochemistry with this biosensor and validated by the standard High Performance Liquid Performance (HPLC) method.
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2020
T54553
UI - Tesis Membership  Universitas Indonesia Library
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Rizki Priya Pratama
Abstrak :
The cranes are widely used to facilitate the transport of goods. This project aims to create a miniature crane to study and analyze its behavior, especially the swing of the load while moving, and then develop and implement a system controlling the position and velocity of the load of the crane using a specific control technique. The purpose of controlling this apparatus is automatically move the crane to a particular position at a certain speed, while trying to keep the swing of the mass to a minimum/no sway. The method used is the state feedback control implemented in VB.net and it produces a very good response. The overall structure of the miniature crane system consists of a computer/program, the LabJack, amplifiers, a motor, sensors, and the miniature crane apparatus. The use of linearization technique could overcome the problem of the dead zone on the motor.
Depok: Fakultas Teknik Universitas Indonesia, 2011
T29827
UI - Tesis Open  Universitas Indonesia Library
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