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INDONESIA
JURNAL PHOTON
Published by Universitas Muhammadiyah Riau
ISSN : 2087393x     EISSN : 25795953     DOI : -
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Nursing Physics
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge
Arjuna Subject : -
Articles 709 Documents
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KARAKTERISASI ELEKTROLIT POLIMER OPTIMUM KITOSAN/PVA+KOH R.Putri -; A.Maddu -; Irzaman -
Sistem Informasi Vol 1 No 2 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v1i2.115

Abstract

The blend-based polymer electrolyte comprising of chitosan and polyvinyl alcohol (PVA) as host polymers and potassium hydroxide (KOH) 35% wt as the complexing salt was studied. Polymer electrolyte were obtained by the casting technique. FTIR, XRD, SEM and EDX studies have been made to investigate the structural, complexation in film morphology of the polymer electrolyte.
STUDIES ON THE CHARACTERISTICS OF SPECTRAL SOLAR IRRADIATION IN THE TROPICS: A CASE STUDY OF MALAYSIA Said Fhazli
Sistem Informasi Vol 1 No 2 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v1i2.116

Abstract

A Multifilter Rotating Shadowband Radiometer has been used to monitor the directly transmitted solar irradiance at six wavelength regions (413.9 nm, 494.6 nm, 612.7 nm, 670.8 nm, 868.0 nm and 939.1 nm) for three clear stable days at Bangi. The primary objective of this study is to determine the aerosol optical depth (AOD), total column ozone (TCO) and precipitable watercontent (PWC). The result shows that the maximum optical depth of aerosol at the shorter wavelength, especially on 24th February 2002 with mean value of 0.254 (24th February 2002), 0.095 (25th February 2002), and 0.072 (26th February 2002) while the ozone optical depth shows the mean value 0.0153 on 24th February 2002, 0.0174 on 25th February 2002 and 0.0175 on 26thFebruary 2002 with the avarage absorption coefficient (a), 0.2 (24th and 26th February 2002) and 0.1 (25th February 2002). The mean value of water vapor content shows that  = 0.356 cmand k = 0.301 cm for wavelength 939.1 nm. From the aerosol optical depth, it shows the existence of smoke type of aerosol on February, 24th to 25th 2002 with Ångström coefficient, , is 1.534 and 1.5513, respectively, and sea water vapor is 0.9889 on 26th February 2002. From the Ångström coefficient, it shows that atmosphere layer of Bangi at that moment is similar to U.S. Standard Atmosphere, with maximum spectral irradiance on black body temperature is 5860 oK.
STUDIES ON THE TOTAL COLUMN ATMOSPHERIC AEROSOL OPTICAL DEPTH, OZONE AND PRECIPITABLE WATER CONTENT IN THE TROPICS: A CASE STUDY OF MALAYSIA Said Fhazli
Sistem Informasi Vol 1 No 2 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v1i2.117

Abstract

A Multifilter Rotating Shadowband Radiometer has been used to monitor the directly transmitted solar irradiance at six wavelength regions (413.9 nm, 494.6 nm, 612.7 nm, 670.8 nm, 868.0 nm and 939.1 nm) for three clear stable days at Bangi. Extensive observations of the columnar aerosol optical depth (AOD), total column ozone (TCO) and precipitable water content (PWC) have been carried out using this instrument. The result shows that the maximum optical depth of aerosol at the shorter wavelength, especially on 24th February 2002 with mean value of 0.254 (24th February 2002), 0.095 (25th February 2002), and 0.072 (26th February 2002) while the ozone optical depth shows the mean value 0.0153 on 24th February 2002, 0.0174 on 25thFebruary 2002 and 0.0175 on 26th February 2002 with the avarage absorption coefficient (a), 0.2 (24th and 26th February 2002) and 0.1 (25th February 2002). The mean value of water vapor content shows that  = 0.356 cm and k = 0.301 cm for wavelength 939.1 nm. From the aerosol optical depth, it shows the existence of smoke type of aerosol on February, 24th to 25th 2002 with Ångström coefficient, , is 1.534 and 1.5513, respectively, and sea water vapor is 0.9889 on 26thFebruary 2002. From the Ångström coefficient, it shows that atmosphere layer of Bangi at that moment is similar to U.S. Standard Atmosphere, with maximum spectral irradiance on black body temperature is 5860 oK.
ISOLASI ENZIM SELULASE DARI PANKREAS KEONG MAS Sri Hilma Siregar
Sistem Informasi Vol 1 No 2 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v1i2.118

Abstract

Extract the cellulose was prepared by the precipitation method using aceton 50% (v/v) and its protein content was analized by Biuret method. The sugar content as the result of the hydrolization of cellulose was determined by Nelson Somogyi method. After precipitation of the protein enzyme, centrifugation and freeze drying were applied and the specific activity of he enzyme cellulose extract was 0.1012 U/mg protein in optimal condition of pH 4.5 and temperature 45oC, where as the maximum velocity 32.94 μg/ml/min and KM value were 0.7279 mg/ml. Respectively the purification fold was 3.58 times and the % recovery was 52.95%.
DESIGN, MANUFACTURING AND TESTING KINETIC ADSORPTION TEST RIG Abrar Ridwan; Nasruddin -; Awaludin Martin; Arfie I. Firmansyah
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v2i1.119

Abstract

Adsorption on a solid adsorbent is the fundamental processes in the field of separation processes, purification of gases, adsorption cooling, advanced adsorption cooling, and extensive work on hydrogen storage. The understanding of the thermodynamic properties of adsorbent plus adsorbate system is important to analyze. Information concerning the relevant adsorption equilibrium and characterized of adsorbent is generally an essential requirement for the analysis and design of an adsorption separation process. For practical application, theadsorption equilibrium must be known over a broad range of operation temperatures. Also, the isotherms of pure species are fundamental information for dynamic simulation of adsorbers. The main objective of this research is to design kinetic adsorption test rig to investigate the capacity and rate of adsorption on adsorbent and adsorbate pair’s. The result of design kinetic adsorption test rig including dimensions of vapor vessel (pressure vessel) and measuring cell. The volume of vapour vessel is 1000 ml and measuring cell is 100 ml. Kinetic adsorption test rig was manufactured to investigate capacity and rate of adsorption up to 40 bar.
IDENTIFICATION TARGETED ON toxR GENE AND DETECTION OF VIRULENT FACTOR ENCODING GENES ON Vibrio parahaemolyticus ISOLATED FROM RAW CHICKEN MEAT Eka Fitrianda
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v2i1.120

Abstract

A number of V. parahaemolyticus isolates has been isolated from raw chicken meat samples collected in Pasar raya Padang. Isolation was done using ChromagarTM Vibrio media. Identification of toxR gene was then done to these isolates. toxR is a very specific gene in V. parahaemolyticus species. Detection for the presence of genes encoding virulence factors, in this case were the gene encoding thermostable direct hemolysin (tdh) and TDH related hemolysin (trh) was performed on toxR positive V. parahaemolyticus isolates. Identification of toxR gene and detection of tdh and trh genes were done trough amplification using polymerase chain reaction PCR (method). The results showed that all of the tested V. parahaemolyticus isolates (22 isolates) had toxR gene, but none of isolates has gene encoding the production of virulence factors both tdh and trh.
PENGARUH KONDISI KALSINASI PADA SINTESIS SENYAWA HYDROXYAPATITE Lisa Utami; Syukri Arief; Novesar Jamarun
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v2i1.121

Abstract

Kalsium fosfat telah menjadi perhatian yang menarik dalam bidang medis dan kedokteran karena biocompatibilitynya yang baik dan struktur serta komposisi kimianya yang sama dengan fasa mineral jaringan keras manusia (tulang dan gigi). Penelitian ini difoukuskan untuk mempelajari faktor yang mempengaruhi morfologi dan komposisi fasa dari senyawa hydroxyapatite dengan menggunakan prekusor diammonium hydrogen phosphate sebagai sumber fosfat serta pengaruh kalsinasi pada suhu 200, 400, 600, 800 dan 1000oC. Produk hidroxyapatite yang dihasilkan dikarakterisasi dengan FTIR, XRD, SEM dan TGA. Hidroxyapatite yang dihasilkan dengan variasi suhu kalsinasi mempengaruhi morfologi dan komposisi fasa dari senyawa kalsium fosfat yang dihasilkan. Fasa yang terbentuk sebelum sampel powder fosfat dikalsinasi dengan (NH4)2HPO4 sebagai sumber fosfat adalah Ca2P2O7.2H2O dengan ukuran kristal 67 nm. Ketika sampel powder kalsium fosfat dikalsinasi pada temperatur 600˚C fasa yang terbentuk dengan menggunakan (NH4)2HPO4 sebagai sumber fosfat adalah hydroxiapatite (HAP) dengan ukuran kristal 8,66 nm Dan ketika sampel dikalsinasi pada temperatur 1000˚C fasa yang dihasilkan yaitu Ca2P2O7 dan Ca3(PO4)2.
PENGARUH SUHU AIR PADA PROSES PENGGILINGAN KEDELAI (Glycin Max (L) Merril) TERHADAP KADAR PROTEIN SUSU DENGAN METODE SPEKTROFOTOMETRI UV-Vis Yuni Fatisa; Maslinda -
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v2i1.122

Abstract

Telah dilakukan penelitian pengaruh suhu air pada proses penggilingan kedelai terhadap kadar protein susu kedelai. Variasi suhu air yang digunakan dalam penelitian ini adalah: 30,40,60 dan 100 oC. Untuk menentukan pengaruh suhu air pada proses penggilingan kedelai terhadap kadar protein susu kedelai digunakan analisis data anova satu arah dengan taraf signifikansi 5 % dan 1 %.Hasil analisis menunjukkan bahwa variasi suhu air yang digunakan pada proses penggilingan kedelai berpengaruh nyata terhadap kadar protein susu kedelai. Dimana kadar protein pada suhu 30oC adalah 2,583%, 40oC adalah 3,789%, 60oC adalah 4,415%, 80 oC adalah 3,876 dan 100 oC adalah 2,189%. Dari hasil penelitian diperoleh kadar protein tertinggi didapat dari penggilingan yang menggunakan air suhu 60 oC.
ANALISA KANDUNGAN LOGAM BERAT DAN ION ASAM (NITRAT DAN SULFAT) DALAM AIR ISI ULANG DI PEKANBARU Lazulva -; Richa Elni Windri; Melda -
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v2i1.123

Abstract

Analisa kandungan logam berat pada air baku dan air isi ulang di daerah Panam, Tangkerang, dan Gobah, Pekanbaru telah dilakukan. Logam berat yang dianalisa adalah Fe dan Cu. Hasilnya menunjukkan bahwa kadar logam berat pada air baku dan air isi ulang realtif rendah dan masih sesuai dengan nilai ambang batas (NAB) syarat kualitas air minum yang ditetapkan dalam Peraturan Menteri Kesehatan RI. Selain logam berat juga diukur parameter fisika dan kimia seperti suhu, warna dan pH, nitrat dan sulfat. Hasilnya menunjukkan parameter fisika masih sesuai dengan NAB yang ditetapkan dalam Peraturan Menteri Kesehatan. Untuk parameter kimia yaitu nitrat dan sulfat masih sesuai dengan NAB, namun untuk pH masih belum memenuhi syarat air minum karena pH air baku dan isi ulangnya dibawah standar yang telah ditentukan.
IDENTIFIKASI GUGUS FUNGSI DAN KANDUNGAN MINERAL LEMPUNG PACITAN DENGAN SPEKTROSKOPI INFRA RED (IR) X-RAY DIFFRACTION (XRD) Pangoloan Soleman
Sistem Informasi Vol 2 No 1 (2011): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v2i1.124

Abstract

Clay is natural mineral from silicate family like crystal which has approximately 2 micrometer. There are two component unit of atom in clay mineral. One consists of oxygen or hidroksida with alumunium, iron or magnesium that coordinated in octahedral system. Others, it is tetrahedral system from silicon with oxygen or hidroksida. Based on IR analysis, it can be known that metal─OH bending vibrations it can be seen at 912,3 cm─1 wavelength. On the other bands between 694,3 and 754,1 cm─1 that are Si─O bending vibrations. X-Ray Diffraction (X-RD) analysis be seen main peak at 2 = 5,70o (d001=15,48 Å) and 2 = 20,02o (d001=4,43 Å). That are for smectite mineral kind montmorillonite as main unit in clay from Pacitan

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