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DETERMINATION OF SESAME OIL QUALITY USINGFRAUNHOFER DIFRACTION METHOD: REFRACTION INDEX AS A TEMPERATURE FUNCTION Alfianinda, Nur Inna; Misto, Misto; Arkundato, Artoto
Jurnal ILMU DASAR Vol 15 No 1 (2014)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (918.971 KB) | DOI: 10.19184/jid.v15i1.834

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Telah dirancang alat uji kemurnian bahan yang bekerja berdasarkan metode difraksi Fraunhofer celah ganda. Metode ini mempunyai akurasi yang baik, tidak memerlukan bahan uji dalam jumlah banyak serta tidak merusak kemurnian bahan uji itu sendiri (non destructive testing/non contactive testing). Pengujian dilakukan dengan menentukan persamaan indeks bias sebagai fungsi suhu bahan uji, yang diperoleh berdasarkan perubahan pola frinji gelap terang difraksi cahaya yang melewati bahan uji untuk variasi suhu yang diberikan (26 °C hingga 90 °C). Dari persamaan indeks bias yang diperoleh kemudian dapat dihitung indeks bias pada suhu sembarang. Uji kemurnian dilakukang dengan membandingkan nilai indeks bias terukur dengan nilai indeks bias referensi pada suhu tertentu. Uji statistik t-test digunakan untuk melihat tingkat akurasi alat. Pada penelitian ini digunakan tiga buah merk minyak wijen yang ada di pasaran. Dari hasil pengukuran dan perhitungan menggunakan minyak wijen tiga macam (A,B dan C) dapat diketahui bahwa dari ketiga bahan uji yang dipilih maka minyak wijen label B memiliki nilai t hitung yang paling kecil dibandingkan minyak wijen label A dan C, sehingga minyak wijen label B dianggap memiliki kualitas yang paling baik dia antara ketiga minyak wijen yang telah di uji. Keywords: Difraksi Fraunhofer, minyak wijen, indeks bias bahan, uji-t  
GROWTH CHARACTERISTIC OF CENDANA (Santalum album Linn.) FROM SUMBA ISLAND POPULATION Sumardi, Sumardi; Kurniawan, Hery; Misto, Misto
Jurnal Penelitian Kehutanan Wallacea Vol 4, No 2 (2015): Jurnal Penelitian Kehutanan Wallacea
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.895 KB) | DOI: 10.18330/jwallacea.2015.vol4iss2pp171-177

Abstract

Cendana (Santalum album Linn.) is a species that has a high economic value because of the essential oil content in the heartwood. The high economic value in the heartwood had pushed exploitation action to these species. Exploitation being offset by regeneration efforts has resulting in a decrease of its populations and genetic variation. The remaining genetic variation can be conserved through establishing Ex-Situ conservation stands which simultaneously fucntioned as basic populations for tree improvement purposes in the future. In 2013, Forestry Research Institute of Kupang has established an Ex-Situ conservation plot of cendana originally from Sumba island population. The research design was laid out in Incomplete Block Design (IBD) consisting of 57 families, single treeplot and 5 replication with a spacing of 4 x 4 m. This study was aimed to investigate the characteristics and the influence of genetic factors on the characteristics of cendana of Sumba Island population until the age of 6 months. The result of study showed that the average growth of height and diameter are 37.36 cm and 3.88 mm, respectively. The estimate family heritability (h2f) for height and diameter are 0,80 and 0.55, respectively.
Sistem Pengukur Suhu Simultan untuk Aplikasi Pemantauan Suhu Tubuh Pasien di Rumah Sakit Sutisna, Sutisna; Misto, Misto; Hardianto, Hardianto
Jurnal Fisika FLUX Vol 7, No 1 (2010): Jurnal Fisika Flux Edisi Februari 2010
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v7i1.3071

Abstract

An electronic monitoring system has been created for monitoringpatients condition simultaneously. The temperature was converted to the voltageby a temperature sensor consisting of an NTC (negative temperature coefficient)thermistor and the additional circuit that its output voltage change following thechange of thermistor resistance. The number of temperature sensor circuit isused as much as ten. The coverage of temperature measurements were in therange 35oC to 41oC. The main control system was done by Labjack UE9 workingbased program that created in LabVIEW 8.0 software. The result showed that thesystem works well, seen from the accuracy value reached more than 99%(discrepancy (D) less than 0.6%) and precision levels obtained from three timesretrieval of data also amounts to more than 99% (relative uncertainty (I) less than0.6%).
Analisa Kualitas Semen Melalui Pengukuran Konstanta Dielektrik Dan Resistivitas Cahyono, Bowo Eko; Misto, Misto; Arivah, Holili Nur
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 2, No 2 (2017): Desember 2017
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v2i2.1199

Abstract

Cement is an adhesive material that is capable of tying dense ingredients into one solid unity, cement was used as construction materials. Any materials including cement has physical properties and is largely determined by the magnitude of the internal condition of the materials. This research was conducted to find out the quality of cement by using measurements of the dielectric constant and resistivity values. The materials examined in the form of 3 brands of cement mixed with sand and water. This research method using capacitive and resistive by using an oscilloscope as a voltage reader. Note that the three cement brands have the same dielectric constant value i.e. amounting to 0.30 and resistivity value of 30.00 Ωm on day 28. The relationship between the dielectric constant value against the addition of age showed a decrease, while for values of resistivity shows an improvement. Onthe measurement of the dielectric constant shows that cement A brand more quickly achieve drying compared to brand B and brand C, as for the measurements of the resistivity shows that cement brand C more quickl yachieve drying compared to cement brand A and brand B.
Evaluasi Uji Keturunan Cendana (Santalum Album Linn.) Umur 8 Bulan Di Kabupaten Timor Tengah Utara-Nusa Tenggara Timur Sumardi, Sumardi; Kurniawan, Hery; Misto, Misto
Jurnal Pemuliaan Tanaman Hutan Vol 8, No 1 (2014): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2014.8.1.56-68

Abstract

Sandalwood (Santalum album L.), a native plant of Nusa Tenggara Timur, has a very high economic value due to santalol content in the heartwood. Currently the gap between demand and production capability of sandalwood oil is high. Productivity and quality of sandalwood can be increased through a series of tree improvement activities, such as establishing a progeny test to produce genetically improved seed. Balai Penelitian Kehutanan Kupang has established a first generation progeny test of sandalwood at Timor Tengah Utara regency, Nusa Tenggara Timur province to improve the productivity of heartwood, rendemen and santalol contents. The trial was laid out in Incomplete Block Design (IBD) consisting of 65 families, 3 tree-plots, 5 replications with a spacing of 4 x 4 m. This study was aimed to evaluate the growth of sandalwood progeny test at eight months after planting. The result of study showed that average growth of height and diameter are 48.60 cm and 4.55 mm, respectively. The estimates of family and individual heritability for height are 0.06 and 0.03,respectively, while for diameter are 0,16 and 0,10. Genetic correlation between the heightand diameter is 0.87.
Termometer dengan Keluaran Suara Berbasis Mikrokontroler ATmega8535 untuk Mengukur Suhu Ruang Misto, Misto
Jurnal Fisika FLUX Vol 6, No 1 (2009): Jurnal Fisika Flux Edisi Februari 2009
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v6i1.3051

Abstract

A thermometer with sound output has been developed. The systemconsists of a temperature sensor, a microcontroller, a voice device, and aspeaker. The temperature sensor of DS18S20 will convert the temperature todigital data. The is feed to ATmega8535 microcontroller. On the otherhand, intwelve memory of voice deviceISD2590 is recorded some numerical sound signalfrom zero to nine and word of temperature unit. For reproducing the sound signalthe data from microcontroller will switch on the memory according to it’stemperature quantity. The sound electronic signal is linked to the speaker toproduce sound. The temperature is designed to operate from 24 to 350C.
Kompas Magnetik Digital dengan Keluaran Suara Berbasis Mikrokontroler AT89S51 Rusgianto, Rusgianto; Misto, Misto
Jurnal Fisika FLUX Vol 8, No 2 (2011): Jurnal Fisika Flux Edisi Agustus 2011
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v8i2.3114

Abstract

An electronic compass system with sound output have been done. Thesystem was employed HM55B Compass Module Sensor, Microcontroller AT89S51,Operational Amplifier, and IC Voice ISD 2590.The operation of the system wascontroller by the microcontroller. The signal from the compass sensor is feed toATmega8535 microcontroller. On the otherhand, in twelve memory of voicedeviceISD2590 is recorded some word sound signal from the north to the north west.For reproducing the sound signal the data from microcontroller will switch on thememory according to it’s compass toward. The sound electronic signal is linked to thespeaker to produce sound. It was concluded that the system work well since the allparameter were displayed on the monitor simultaneously.
SISTEM PEMBERI PAKAN IKAN SECARA OTOMATIS BERBASIS MIKROKONTROLER ATMega8535 Setyawan, Herry; Misto, Misto; Gumay, Rofy Fazra
Jurnal Fisika FLUX Vol 10, No 1 (2013): Jurnal Fisika FLUX Edisi Februari 2013
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v10i1.2635

Abstract

Abstract: An electronic system based on Atmega8535 microcontroller for food fishfeding has been done. The system was employed a RTC, a pair infrared LED andphotodiode sensor, DC motor, driver circuit, a microcontroller, and LCD display. Themicrocontroller was programmed with C language and AVR program that suitable forthe device. The system was supported by a RTC device to get the main time basesignal of the system time. All of the system was controlled by microcontroller. Thesignal from the microcontroller is send to LCD and fish food applicator. It was concludedthat the system work well well since the all parameter and action were displayed onmonitor simultaneously and the applicator.Keyword: ATMega8535, RTC, infrared LED and photodiode sensor, DC motor,applicator
PALM COOKING OIL REFRACTION INDEX MEASUREMENT USING SINGLE SLIT FRAUNHOFER DIFFRACTION METHOD Supriyadi, Supriyadi; Misto, Misto; Hartanti, Yulia
Jurnal ILMU DASAR Vol 15 No 2 (2014)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1615.454 KB) | DOI: 10.19184/jid.v15i2.632

Abstract

Palm cooking oil refraction index measurement has been done in several temperature using single slit Fraunhofer diffraction method. Ratio between diffraction patterns at the air dan solution medium can be used to determine its refraction index. Using aquades as sample, was obtained refractive index 1.331 with the discrepancy 0.038%. Based on the refractive indexs measured for each temperature were obtained linear equation model: Y=-(0,00145±0,00021)X+(1,54232±0,01757)where  R = -0,97266 and R^2=0,94606. Temperature changes influence strongly to refractive index changes of palm cooking oil sample, changes both inversely. Gradient of 0.00145 indicate that refractive index of palm cooking oil sample decrease slowly, so the quality is still good.   Keywords : Palm Coocing oil, refractive index, temperature, Fraunhofer diffraction method
MEASUREMENT SYSTEM OF SUGAR CONTENT IN LIQUID MEDIA USING COMPUTERIZED PHOTODIODE SENSOR Misto, Misto; Mulyono, Tri; Alex, Alex
Jurnal ILMU DASAR Vol 17 No 1 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.095 KB) | DOI: 10.19184/jid.v17i1.2664

Abstract

It has been made an electronic system for measurement of sugar cane in solution media. This system uses a pin photodiode as a sensor, laser source, optical fiber, an operational amplifier (Op-Amp), analog to digital converter (ADC) of the Arduino, and computers. The main operation of the measurement system is done by the sensor and controlled by computer. The the photodiode sensor sends a signal to a signal processing unit (op-amp) and converted to a digital signal by the ADC. The digital signal is then forwarded for processing and display (computer). We Concluded that the system working well because of the sugar content information can be simultaneously displayed on the monitor .Keywords: sugar content, pin photodiode, computer