Indonesia Conference Directory

Corresponding Author
Rachmad Almi

Institutions
(a) Department of Physics Education, Faculty of Teaching and Education, Universitas Samudra, Kota Langsa, 24416, Indonesia
(b) Department of Physics, Faculty of Engineering, Universitas Samudra, Kota Langsa, 24416, Indonesia

Abstract
The identification of a particular illness is usually done by microscopical check-up from the phlegm, urine, blood, Rontgen, and CT-scan. This technique needs a long period, high cost, and complicated procedure. As a result, society feels reluctant to check up on their health. Thus, research of an instrument that can define and diagnose the illness easily, efficiently, and accurately is needed. This research developed a prototype of an electronic nose that consists of a gas sensor that can respond quickly the element of volatile organic through the breathing air. Principal component analysis (PCA) method is the most appropriate method to classify the type of illness visually and then the algorithm of AI in Neural Network is constructed to automatic identification of the type of patients illness. Therefore, this research is needed to be applied in medical instrumentation.

Keywords
PCA; tract; e-nose; respiratory

Topic
Sensing materials and applications

Link: https://ifory.id/abstract/7aJ3wvhVb8dK

Corresponding Author
Jaeyoung CHO

Institutions
Kyungpook National University

Abstract
New neutron detectors are being developed as demand for security applications increases. Li-containing single crystal has a significant results such as Cs2LiYCl6 (CLYC), Cs2LiLaBr6: Ce (CLLB) and LiI. Their performance of pulse shape discrimination of neutron/gamma makes it possible to detect neutron/gamma with a single material. However, there is difficulty such as material cost, handling, complexity and hygroscopic in crystal growth. In particular, CsI(Tl) crystal scintillator doesn-t have such difficulty with good scintillation performance. Therefore, we developed Li co-doped CsI(Tl) crystal scintillator for neutron detection. Thermal neutron detection is realized by the 6Li(n,t)α neutron capture reaction. The reaction products, an alpha particle and a triton, deposit a total of 4.8 MeV energy in the crystal. In this poster, Li co-doped CsI(Tl) single crystals have been studied with optical scintillation properties and neutron/gamma capabilities

Keywords
CsI(Tl), neutron detection,

Topic
Sensing materials and applications

Link: https://ifory.id/abstract/TnZKbA86EuUM

Corresponding Author
Indrayani Indrayani

Institutions
1Civil Engineering Department, Muhammadiyah University of North Sumatera
2Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221

Abstract
Trains are a means of transportation that is used by people to avoid congestion. However, the train station is one of the most frequently exposed to noise. This is due to the sound intensity of the operational activities in the location. Passengers and station officers are environmental components exposed to noise. In this study the value of sound intensity level at the railway station of Medan city is measured using Sound Level Meter. This measurement was carried out for six days. The highest sound intensity level for the train departs by 96,67 dB and for the train arrival of 96,66 dB. While the lowest sound intensity level of train departures is 81,41 dB and the arrival of trains is 83,75 dB. It can be noted that the high level of sound intensity is sourced from the friction of the wheels with the rail surface, notification speakers and train horns. It can also be used to find the most appropriate solution to reduce the noise level in the railway station area

Keywords
Sound Intensity, Rail Way Station, Sound level Meter

Topic
Sensing materials and applications

Link: https://ifory.id/abstract/9fNp86KTxdHv

Corresponding Author
Indah Nursyamsi Handayani

Institutions
a) Department of Electromedical Engineering, Poltekkes Kemenkes Jakarta II, Jakarta 12120, Indonesia
indah.nursyamsi[at]poltekkesjkt2.ac.id
b) Department of Physics, Faculty of Mathematics and Science, Universitas Indonesia, Depok 16424, Indonesia
*cuk.imawan[at]sci.ui.ac.id

Abstract
Detection of absorbed dose in materials were irradiated is one method for monitoring irradiation processes. Dyes that are sensitive to ionizing radiation has the potential to used as radiation detectors. This article will report on the fabrication of gamma-rays detector using natural red dyes obtained from Hibiscus sabdariffa L. (HS) calyxes extract. The HS extract solution was made using a simple extraction method which was carried out by soaking the dried HS calyxes with double distilled water as a solvent for 24 hours. Gammacell irradiator with Cobalt-60 radiation source was used to test the sensitivity of HS extract solution to gamma radiation with a dose of 1-10 kGy. UV-Vis spectrophotometer was used to the characterization of optical properties of HS extract solution. After gamma irradiation, it was observed the color of the HS extract solution faded slightly from dark red to more transparent red color along with increasing doses. The results of UV-Vis characterization showed maximum absorbance of HS extract solution at 523 nm and a decrease in absorbance of 95% after irradiation at a dose of 10 kGy. The HS extract solution is stable in the dark storage conditions at the refrigerator up to 30 days of storage.

Keywords
Gamma-rays detector, Hibiscus sabdariffa L. extract, irradiation

Topic
Sensing materials and applications

Link: https://ifory.id/abstract/bW3JGXUQFLmd

Corresponding Author
Setyawan Purnomo Sakti

Institutions
Department of Physics
Brawijaya University
Jl Veteran, Malang 65145, Indonesia
sakti[at]ub.ac.id

Abstract
High shear modulus coating material does not provide loading effect to the Quartz Crystal Microbalance sensor. The condition is met when the coating material was glassy and the layer was homogeneous. Polystyrene is considered as a glassy coating material when used on 10MHz Quartz Crystal Microbalance. Homogeneous and compact polystyrene coatings that are glassy can be obtained using the spin coating method. The films rigid condition is shown by the sensor impedance value at the series resonance frequency after coating. However, using ultrasonic spray coatings, it was known that polystyrene films are formed not as homogeneous as when coated using spin coatings. We observed that Quartz Crystal Microbalance was damped by the polystyrene film when the coating film was not evenly distributed over the sensor surface, especially on the sensor surface above the electrode. The minimum impedance of the QCM sensor increased significantly. The unevenness of the coating causes the damping effect on the QCM sensor. The minimum sensor impedance before coating was less than 15(Omega). When the polystyrene layer was uneven, we found that the impedance increased by more than 25 (Omega). The results showed that the distribution of polymer layers on the sensor surface is one of the important factors that must be considered to avoid the effect of damping on the sensor. The measurement results showed that the sensor has a negative mass effect.

Keywords
QCM sensor; uneven coating; polystyrene

Topic
Sensing materials and applications

Link: https://ifory.id/abstract/kXCLyq9jdzAP