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Chomsin Sulistiya Widodo
Jurusan Fisika Fakultas MIPA Universitas Brawijaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Gelombang Ultrasonik Jangkrik (Acheta domesticus) terhadap Pola Perilaku Makan Pasif dan Gerak Pasif Tikus Sawah (Rattus argentiventer) Sama’ Iradat Tito; Bagyo Yanuwiadi; Chomsin Sulistya
Indonesian Journal of Environment and Sustainable Development Vol 1, No 2 (2010)
Publisher : Graduate Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1222.326 KB)

Abstract

Abstrak Tikus sawah merupakan hama utama dan penyebab kerugian terbesar pada tanaman padi di Indonesia. Cara pengendalian hama yang ada sampai saat ini belum sepenuhnya dapat mengatasi masalah hama tikus. Oleh karena itu diperlukan penelitian untuk mendapatkan teknologi pengendalian yang efektif dan mudah dilaksanakan dengan menggunakan gelombang ultrasonik jangkrik. Penelitian ini dilakukan untuk mengetahui pengaruh gelombang ultrasonik jangkrik terhadap pola perilaku makan pasif dan gerak pasif tikus. Gelombang ultrasonik jangkrik dipaparkan langsung terhadap tikus sawah dan diamati melalui pola perilaku makan pasif dan gerak pasif yang ditunjukkan oleh tikus sawah. Data  hasil  pengamatan  pola  perilaku  makan  pasif  dan  gerak pasif tikus dianalisis dengan analisis  variansi rancangan faktorial. Faktor yang diamati meliputi frekuensi, jarak sumber, dan lama pemaparan gelombang ultrasonik jangkrik serta  kombinasinya. Frekuensi gelombang ultrasonik jangkrik pada jarak 100 cm dan lama pemaparan 45-60 menit dapat menimbulkan  perubahan  pola perilaku makan pasif dan gerak pasif  tikus. Perubahan tersebut terjadi akibat efek termal, efek kavitasi dan efek  mekanik  yang  terjadi  pada  struktur  jaringan sel  tikus. Kata kunci : gelombang ultrasonik, jangkrik, tikus sawah Abstract Over the last decade, paddy field rat cases in Indonesia still become problem cultivation rice plant. The control method be present now is not yet get exceed  rat wet rice pest. Because that, need straight away research for get technology control that effective and easy to applicate. The control rat wet rice pest with cricket ultrasonic waves we hope that can become alternative that problem solving. The aim from this research is for knowing the influence of cricket ultrasonic waves toward the passive feeding and passive motion rat wet rice field. Cricket ultrasonic waves direct flat to rat rice pest. The data on the observation of response and change of behavior patterns that covered the patterns of passive movement and of passive feeding of  rat wet rice field brought  about  by  ultrasonic  wave  disturbances were analyzed and employed to determine which parameter  were the most dominant among variations exposure distance  and  exposure time of the ultrasonic waves. The result of research gave significant differences (P<0.05) of the effect of ultrasonic wave frequency, source distance and exposure time. At cricket frequency, it  already  gave  effective impact  toward  behavior  patterns that covered  the  patterns  of  passive  feeding  and  passive  movement  of  the migratory locusts. At this cricket frequency, with exposure time of 45 to 60 minute at 100 cm  distance  it  has  already effective impact  toward the  behavior patterns  of rat wet rice field compared  to the change of  source distance longer  than 100 cm at other time too towards passive feeding and passive motion pattern of rat wet rice field. Key Words: Ultrasonic waves, cricket, rat wet rice field
Determination of Magnetic Properties of Drugs and Balanced Wastes Based on the Fluorescence Resonance Energy Transfer (FRET) Phenomenon Dina A Chusniyah; Djoko H. Santjojo; Chomsin S. Widodo
Natural B, Journal of Health and Environmental Sciences Vol 2, No 3 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.177 KB) | DOI: 10.21776/ub.natural-b.2014.002.03.6

Abstract

Along with population growth, the need for clean water is increasing. The availability of clean water is starting to decrease due to the decline in quality and quantity of water in the environment. Water quality degradation can be caused by water pollution from industrial waste disposal. One of the parameters to measure the level of pollution is the biochemical oxygen demand (BOD). Beside titration, biosensor method is a method developed to measure the BOD. The purpose of this study is to design a microorganism-based biosensor that can be used to measure levels of Biochemical Oxygen Demand (BOD5) using a microelectrode transducer with Pseudomonas putida and Pseudomonas fluorescents as bioreceptor on phenol wastes. BOD concentration was controlled by adding phenol in water with concentration of 0 mg/L, 50 mg/L, 100 mg/L, 150 mg/L, 200 mg/L and 250 mg/L. BOD concentration as measured by using titration method and developed biosensor. Experimental result shows that the potential of the biosensor linearly correlated to the concentration of BOD in water. Membrane surface area does not contribute any effect to the output potential of the biosensor. We can conclude that both Pseudomonas putida and Pseudomonas fluorescents can be use as material for measuring BOD concentration in water. 
Effect of Rosella Petal Extract (Hibiscus sabdariffa L.) On SOD Activity and Mouse Eye Rat (Rattus Wistar) Exposed to Gamma Radiation Rara Pramita; Chomsin S. Widodo; Unggul P. Juswono
Natural B, Journal of Health and Environmental Sciences Vol 2, No 4 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.225 KB) | DOI: 10.21776/ub.natural-b.2014.002.04.13

Abstract

Measurement activity of superoxide dismutase (SOD) and Malondhyaldehyde (MDA) to analyze the effect of roselle calyx extract (Hibiscus sabdariffa L) after exposure 300 rad gamma radiation. 35 male white rats (Rattus Wistar) were exposed to fractination dose of 300 rad for 7 day, are given in the sonde 2cc/days roselle extract for 16 days with a dose variation 62.5 mg/200 g BW, 125 mg/200 g BW, 250 mg/200 g BW, 400 mg/200 g BW, and 550 mg/200 g BW. Measurement of the activity of SOD and MDA were done by thiobarbituric acid (TBA) methode. Extract Roselle (Hibiscus sabdariffa L) 250 mg/200 gr BW increase the activity of superoxide dismutase (SOD) and decrease Malondialdehyde (MDA) after being exposed to radiation of 300 rad.
Studies on the Effect of Pollutant Waste on Free Radical Content in Tilapia Gill Organs (Oreochromis Niloticus) Nindha A. Berlianti; Chomsin S. Widodo; Unggul P. Juswono
Natural B, Journal of Health and Environmental Sciences Vol 2, No 4 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (589.771 KB) | DOI: 10.21776/ub.natural-b.2014.002.04.10

Abstract

Studies on the effect of heavy metal pollution on the appearance of free radicals in aquatic biota has been done by applying heavy metals Pb, Cd and Hg in tilapia fish (Oreochromis Niloticus). Free radicals research was done to organ of tilapia gills using ESR. The result showed that the concentration of Pb Nitrate 0.2 ppm – 1.4 ppm, Cd Nitrate 0.02 ppm – 0.14 ppm and Hg Nitrate 0.006 ppm – 0.018 ppm could improve free radical O2-. Free radicals concentration in organ of tilapia gills will increase with increasing concentration of heavy metals.
Effect of Gamma Radiation and Temulawak Extract (Curcuma xanthorrhiza) on HAART Levels of Mice Mice (Mus musculus) Septiana K. Sari; Chomsin S. Widodo; Unggul P. Juswono
Natural B, Journal of Health and Environmental Sciences Vol 3, No 2 (2015)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.279 KB) | DOI: 10.21776/ub.natural-b.2015.003.02.12

Abstract

Gamma radiation can causes cells damage, because the interaction between radiations with cells can produce free radical. The compound that can neutralize and catch free radical is called antioxidant. The objectives of this research were to analyze influence of gamma radiation and Curcuma xanthorrhiza extract to the SGPT level to the mice’s liver. This research uses eighty mices and they were divided into three group, negative control (K-), radiation non extract (R-) and extract plus radiation (R+). The doses of treatment of Curcuma xanthorrhiza extract are 1.4 gr/kg body weight; 2.0 gr/kg body weight; 2.6 gr/kg body weight; 3,2 gr/kg body weight and 3.8 gr/kg body weight, while the exposure of gamma radiation are given during 10 minutes, 20 minutes, 30 minutes, 40 minutes and 50 minutes. The measuring of SGPT level in mice’s serum is done by using blood analyzer. The results showed that free radical can damages liver cells and breaks cell wall, so SGPT level in blood to be high. In a row of increasing of Curcuma xanthorrhiza extract dose, then SGPT level to be low. 
PFRET Measurements Using Sensitized Emission Methods in Observation of Calcium Changes in Oocytes Nathania Nanasari; Djoko Herry Santjojo; Chomsin Sulistiya Widodo; Hari Soepriandono
Natural B, Journal of Health and Environmental Sciences Vol 2, No 4 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.525 KB) | DOI: 10.21776/ub.natural-b.2014.002.04.5

Abstract

Fluorescence Resonance Energy Transfer (FRET) is a process of non-radiative energy transfer from donor molecule to an acceptor. We expect to know the quantitative FRET measurements in immature and mature goat oocyte with the presence of calcium. FRET was detected using a laser scanning confocal microscope. We assume that calcium as a donor and fluo-3 as an acceptor. The methods of sensitized emission have been used for quantitative FRET measurement. We also describe the precision FRET (PFRET) data analysis. The value of PFRET describe the presence of calsium in immature and mature oocytes. For these immature and mature oocytes, the results of PFRET are 622,5 and 754,57 respectively. Mature oocyte has more calsium than immature oocyte.
Studi Penggunaan Mikrowave pada Proses Transesterifikasi Secara Kontinu untuk Menghasilkan Biodiesel Chomsin Sulistya Widodo; Muhammad Nurhuda; Aslama A. Aslama A.; Hexa A. Hexa A.; Saiful Rahman
Jurnal Teknik Mesin (Sinta 3) Vol. 9 No. 2 (2007): OCTOBER 2007
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

A new method for continuous trans-esterification process that is based on the microwave heating, has been developed. The design consists of a microwave cavity, where in a transparent pipe is througly set up. This transparent pipe is used to continuously flow the biodiesel reactants. The experimental observations indicate that the design works well. At the level of microwave output power of 1300 watt (2x650 watt), the reaction rate is found to be 1 liter/minutes. The viscosity measurements of biodiesel products, as most important parameter, yielded values of 1.5-1.76 times than that of mineral diesel, which satisfies the biodiesel standard Abstract in Bahasa Indonesia: Sebuah metode baru untuk proses transesterifikasi kontinyu dengan pemanasan meng¬gunakan microwave telah dikembangkan. Desainnya terdiri atas pemanas microwave berlubang dimana sebuah pipa transparan menembus microwave tersebut. Pipa transparent digunakan untuk mengalirkan secara kontinu reaktan biodiesel. Hasil pengamatan eksperimen menunjuk¬kan bahwa peralatan yang didesain dapat bekerja dengan baik. Pada tingkat daya keluaran mikrowave sebesar 1300 watt (2x650 watt), laju reaksi sebesar 1 liter/menit. Hasil pengukuran viskositas sebagai parameter penting biodiesel yang dihasilkan mencapai 1.5 – 1.76 lebih kental dibandingkan dengan minyak diesel mineral standart. Kata kunci: Biodiesel, gelombang mikro, transesterifikasi.
Analysis of Effect of Sound Frequency Against System Open Close Stomata of Rice Plant of Logawa Variety Kuni Nadliroh; Chomsin S. Widodo; Didik R. Santoso
Natural B, Journal of Health and Environmental Sciences Vol 3, No 2 (2015)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (500.515 KB) | DOI: 10.21776/ub.natural-b.2015.003.02.13

Abstract

This study aimed to determine the effect of sound waves to open the closed stomata rice plants in sonic bloom technology, the frequency used for rice crops, as well as help the intensification of agriculture. This study was conducted on rice types Logawa, where rice plants used are rice plants ready for planting. Ready for planting rice plants treated without wave, 10 Hz, 4 kHz, 7 kHz, 30kHz. Parameters measured were wide rice plant stomata. The results showed that the rice plants have stomata greatest width occurs when the plant is given 4 kHz frequency sound waves, the waves at 06.00 - 09.00. 
Co-Authors Aslama A. Aslama A. Bagyo Yanuwiadi D. J. Djoko Herry Santjojo Didik R. Santoso Dina A Chusniyah Djoko H. Santjojo Hari Soepriandono Hexa A. Hexa A. Kuni Nadliroh Muhammad Nurhuda Nathania Nanasari Nindha A. Berlianti Rara Pramita Saiful Rahman Sama’ Iradat Tito Septiana K. Sari Unggul P. Juswono Unggul P. Juswono