The photoacoustic tomographic imaging system based on diode laser and microphone for analyzing healthy and sick colon of broiler by Bonita, Arta Bayti, Wasono, Mohammad Ali Joko, Mitrayana, Mitrayana

“…Photoacoustic tomographic succeeded in imaging sick colon samples with an intensity of -61.4076 dB and healthy with an intensity of -69.9145 dB at a frequency of 17000 Hz and a duty cycle of 40%. The image result of the sick colon is clearer by the dominant colors in red, yellow, and blue, while those for the healthy colon are more dominant in blue and yellow. …”

The characterization of a photoacoustic tomography imaging system and its application to distinguish healthy liver and worm-infected liver by Hanif, Laila Nur, Satriawan, Mirza, Mitrayana, Mitrayana

“…The results of the characterization of the PTIS showed that the system can distinguish between healthy liver and the worm-infected liver optimally at 17 kHz laser modulation frequency and 50% intensity of duty cycle. The average sound intensity of worm-infected liver is higher than the healthy liver, thus it produces a higher contrast in photoacoustic tomography imaging results compared to a healthy liver…”

Photoacoustic tomography system based on Diode Laser to Imaging of some types of materials by Mitrayana, Mitrayana, Cahyani, Dara Cynthia Nur, Satriawan, Mirza

“…Optimum setting of laser modulation frequency and duty cycle system to distinguish images from plasticine samples + iron wire and plasticine + cardboard, i.e., 19 kHz and 50%, while to recognize images from plasticine samples + mica plastic and mica plastic + cardboard, which is 19.5 kHz and 50%. …”
Get full text

Photoacoustic Imaging for Periodontal Disease Examination by Sari, Atika Windra, Widyaningrum, Rini, Mitrayana, Mitrayana

“…Results: Results revealed that the optimal frequency of laser modulation for periodontal tissue imaging was 19 kHz with a duty cycle of 50%. The photoacoustic (PA) intensity of periodontal tissues was −68.71 dB for treatment group 3, −70.34 dB for treatment group 2, −71.69 dB for treatment group 1, and −73.07 dB for the control group. …”
Get full text

Experimental investigation on the performance of domestic refrigerator using isobutane and mixture of propane, butane and isobutene by Sattar, M.A., Saidur, Rahman, Masjuki, Haji Hassan

“…The refrigeration capacity, the compressor power, the coefficient of performance (COP), condenser duty and heat rejection ratio were investigated. …”
Get full text

Proposed development of Nusajaya Boulevard in Nusajaya Central Planning Area by Mustafa, Mohd Khairi, Said, Ismail

“…The main amenity in the mall is a multi functional paved area bounded by several rows of shade and large canopied trees, which gives grandiose vista effect. With the heavy-duty pavement, the parade goes from the memorial area and along the central paved area surrounded by the terrace where people can enjoy this event. …”
Get full text