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Journal Cover Sainstek : Jurnal Sains dan Teknologi
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 2085-8019 - ISSN (Online) 2580-278X
   Published by IAIN Batusangkar Homepage  [2 journals]
  • KARAKTERISASI BAKTERI POTENSIAL PENDEGRADASI OLI BEKAS PADA TANAH BENGKEL
           DI KOTA PADANG

    • Authors: Yuni Ahda, Lel Fitri
      Pages: 98 - 103
      Abstract: The research objective is to locate and determine the morphological and biochemical characteristics of the bacteria that could potentially degrade the used lubricant oil in the workshops in Padang. The research was conducted March to October 2016. The bacteria obtained from the workshop is cultured on selective media MSM and transferred to LB medium to obtain pure isolates. Morphological and biochemical characterization indicate three types of bacteria that live in workshop’s soil contaminated used lubricant oil, namely Bacillus sp1, sp2 and Alcaligenes Bacillus sp
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • ADSORPSI LIMBAH PB MENGGUNAKAN APLIKASI CARBON NANO TUBE TERINTEGRASI
           DENGAN SISTEM LAHAN BASAH BANTARAN SUNGAI GAJAH WONG

    • Authors: Asih Melati, Eka Sulistyawati, Ika Nugraheni
      Pages: 104 - 112
      Abstract: As a heavy polluted river in Yogyakarta, Gajah Wong River has been the target of Environment Agency (BLH) for its protection and water treatment program. Our preliminary research shows it had DO 0 mg/L, BOD 27, 86 mg/L, COD 79, 49 mg/L, Pb 0,03 mg/L and PO4 3,250 mg/L. The aim of this research was exploring the effectiveness of water treatment system using carbon nano tube based on coconut shells activated carbon integrated with wetland system. The Carbon nano tube was synthesized by using CVD methods while wetland system contains plants (which absorb pollutants. The result of this research are participated from Gajah Wong community and the water become more purify signed by BOD, DO, PO4 and COD normal value.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PERANCANGAN ALAT PERAGA DIFFERENTIAL THERMAL ANALYSIS UNTUK ANALISIS TITIK
           LELEH MATERIAL INDIUM, TIMAH DAN SENG

    • Authors: Fitria Hidayanti, Tri Yulianto, Agus Sukarto Wismogroho
      Pages: 113 - 127
      Abstract: The aims this research was to designed a differential thermal analysis props to analyze the melting point of the material. Differential Thermal Analysis props have a furnace with a maximum temperature of 600 ° C. Temperature sensor used is a K-type thermocouple with a measurement range of -200 ° C to 1200 ° C. Controller is used to control the temperature of the furnace is Autonics with digital temperature controller type TK4M. Measurement of the value of the temperature in the furnace using an Arduino Uno microcontroller connected to LabVIEW software via USB. Measurement of the melting point of the material used these props are tested on material Indium (In), tin (Sn), and zinc (Zn) with a melting point 152,50C, 231,50C and 4250C.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PEMBERIAN ANOMALI KEDALAMAN REFLEKTIF PADA SIMULASI PERSAMAAN AIR DANGKAL
           DENGAN KONFIGURASI SEJAJAR

    • Authors: Nugroho Adi Pramono
      Pages: 128 - 134
      Abstract: The simulation of shallow water equation with straight configuration reflective depth anomaly has been performed. This program simulated wave absorber in the beach in order to prevent furthur abrasion of by sea. This program using modified Navier-Stokes equation and running on Matlab program. The result show that depth-anomaly reduced the amount on wave amplitudo by significant value.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • KARAKTERISTIK MORFOLOGI ULAR FAMILIA ELAPIDAE DI KAMPUS UNIVERSITAS
           ANDALAS LIMAU MANIH PADANG

    • Authors: Fachrul Reza, Djong Hon Tjong, Wilson Novarino
      Pages: 135 - 141
      Abstract: Research on the Snakes Morphological Characteristics on Campus of Andalas University Limau Manih had been done. The research was conducted using survey method and Dissemination of Information to Public accompanied by morphometric measurements and descriptions. The results of the research that had been done caught 2 species that consist of one family namely Elapidae. This family is refer to snakes which has neurotoxin venom glands, no loreal scalation, and mostly teresterial. Maticora bivirgata flaviceps (Cantor, 1839) which has no loreal scale, red coloration on tail, and head; Naja sumatrana Mȕller, 1887 which has no loreal scale, black coloration with yellow coloration on it’s hood, and yelowish head.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • KOMPOSISI POHON DI BUKIT ACE KELURAHAN GUNUNG SARIK KECAMATAN KURANJI
           PADANG

    • Authors: Rizki Rizki, Elza Safitri
      Pages: 142 - 149
      Abstract: The existence of trees in a region could be threatened because of their good forest damage due to natural factors such as fires and landslides, as well as human activities mainly due to illegal logging. This study aims to determine the composition of a tree in Bukit Ace in the sub Kuranji Padang. In this study using a survey method using a combination of methods to make trransek track and map examples. Transects were observed along the 20 meter by 10 mapped sample with a size of 10x10 meter Analysis of vegetation cover density, frequency, dominance, importance and diversity index. Based on research conducted at the Mount Ace Village of Mount Sarik District of Kuranji Padang, tree composition consists of 13 species and 172 individuals where species of trees by people who at least is Anacardium ocidentale ie 3 people whereas species with people most is Xerospermum intermedium (31 people) , Important values ranging between 6.107% - 60.327%, of tree species that have significant value the highest is Xerospermum intermedium is 60.327% and tree species with important value lows are Evodia malayana namely 6.107%, while based on diversity index of forest in Bukit Ace classified as being abundant with value ID 2,351.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PENGARUH TEMPERATUR ANNEALING TERHADAP SIFAT FISIS BATU BATA LIMBAH SERAT
           ALAMI

    • Authors: ARTHA NESA CHANDRA, Djusmaini Djamas, Ramli Ramli
      Pages: 150 - 158
      Abstract: This study aims to determine at what temperature annealing which will produce compressive strength and good porosity in the brick waste natural fiber. This study was an experimental study with dick variables such as the proportion of clay and waste of natural powder that is 90%: 10%, each grain size 0.18 mm material, waste natural powder used is sawdust sawmill. The independent variable is the temperature annealing while the dependent variable is the compressive strength and porosity. And wastes natural clay powder mixed and given 5 liters of water, then in print square shaped measuring 6x6x6 cm by 20 pieces to determine the compressive strength and the cylinder-shaped measuring 10 x 7 cm by 4 units to determine the value of porosity. Each of these samples with variations in-Anneal Annealing temperature 7000C, 7500C, 8000C and 8500C using Electric Furnace. After data collection and data analysis of compressive strength and porosity of the importance of the value of the maximum compressive strength of 89.5 kg / cm2 at a temperature of 8500C and this value meets the standards. While the minimum porosity value was 2.10% at the temperature of 8500C.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PEMERIKSAAN KADAR MERKURI DAN KELUHAN KESEHATAN DALAM DARAH WANITA PEMAKAI
           KRIM PEMUTIH DENGAN METODA INDUCTIVELY COUPLED PLASMA

    • Authors: Dyna Putri Mayaserli, Weni Sasmita
      Pages: 159 - 165
      Abstract: Whitening cream is a mixture of chemicals or other materials that serve to lighten skin or fade black spots on the skin. Bleaching creams that contain mercury is very harmful for health. The purpose of this study is to examine and establish the levels of mercury in the blood of women users of whitening creams in the city of Padang. Blood samples examined as many as 10 samples and whitening creams as much as 5 samples. The qualitative analysis of the bleaching creams done with color test method, while the quantitative analysis of the blood samples used method ICP (Inductively Coupled Plasma). The results showed that of the five samples examined bleaching creams with color test, there are three positive samples contain mercury. while the results showed that the ten blood samples studied one sample contained mercury levels in the blood exceeds the normal value is 0.04435 mg / L. The use of whitening creams containing mercury can cause a variety of health complaints, ranging from skin discoloration, which in turn can cause black spots on the skin, allergies, skin irritation as well as the use of high doses can cause permanent brain damage, and can cause cancer.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PEMANFAATAN LIMBAH JAGUNG UNTUK PEMBUATAN BISKUIT PAKAN HIJAUAN DI
           KECAMATAN LIMA KAUM BATUSANGKAR

    • Authors: MAYA SARI
      Pages: 166 - 172
      Abstract: Biscuits Feed Forage is obtained by the technique Silage. These biscuits can be made from agricultural waste including corn waste. As one of the agricultural centers in West Sumatra, corn production in the District Batusangkar very high. However, agricultural production is not followed by the management of agricultural waste are mostly just burned. The purpose of the study was to test to make biscuits forage from corn waste using techniques silage accompanied with the addition of nutrients, the test mold making biscuits conventionally made using the technique of pressure, conducting organoleptic test and analysis proximate to product biscuit feed forage already made. The results were obtained from waste animal feed forage of good quality corn silage by using the technique. treatment P2 (corn leaves 1 kg + 5% + molasses urea 10%) and T1 (1minggu after harvest). Green feed made with the best formula is packaged in the form of biscuits using conventional printing equipment.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • ANALISA JUMLAH PRODUKSI PADA INDUSTRI RUMAH TANGGA DENGAN MENGGUNAKAN
           LOGIKA FUZZY: STUDI KASUS UD TEMPE PUJI KECAMATAN BAYANG KABUPATERN
           PESISIR SELATAN

    • Authors: Ondra Eka Putra, Eka Lia Febrianti
      Pages: 173 - 179
      Abstract: Total production of a company must be appropriate to the existing demand and supply, if the amount of production is not suitable then it would result in losses of the company because there is no analysis of the market needs for demand and supply of products. UD Tempe Puji is domestic industry that produces tempe every day to provide the needs of the market. In producing UD Tempe Puji only estimate the market needs are uncertain that the market needs are not being met or exceeded. In the analysis of the amount of production at UD Tempe Puji using Tsukamoto fuzzy logic so that the amount of tempe to be produced in accordance with market needs based on demand and supply that exist automatically. Data was analyzed based on the demand, supply and production quantities are never done by UD Tempe Puji. In the method of drawing conclusions fuzzy Tsukamoto, each consequent upon the rule should be represented by a set of fuzzy with the membership function monotonous, as a result, the output results of inference of each rule is given explicitly by α-predicate, the final result is obtained by using a weighted average.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PEMBERIAN AIR REBUSAN DAUN SIRIH MERAH (Piper crocatum Ruiz &Pav) TERHADAP
           KADAR GLUKOSA DAN KOLESTEROL DARAH MENCIT PUTIH JANTAN

    • Authors: Dewi Yudiana Shinta, Sudyanto Sudyanto
      Pages: 180 - 185
      Abstract: This study aims to find of the effect of the water decoction of red betel leaf (Piper crocatum Ruiz & Pav) on blood glucose levels and cholesterol male white mice. The method used in this study deskripstif exploration using betel leaf stew and given to a white male mice are sonde at a dose of 0.13 ml / 20gBB, 0.13 to 0.39 ml / 20gBB 0.13 and 0.26 ml / 20gBB during seven days and examined glucose and cholesterol levels of the mice. Research results show that the water decoction of red betel leaf (Piper crocatum Ruiz & Pav) can lower blood glucose levels of male white mice were significantly (p <0.05) by ANOVA statistical analysis.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PENGGUNAAN COMPUTED RADIOGRAPHY UNTUK IDENTIFIKASI MADU LEBAH

    • Authors: SRI MAIYENA
      Pages: 186 - 192
      Abstract: Research on identification of honey bee using Computed Radiography has been done. The testing was carried out by providing digital radiograph of the three types of honey bee. The voltage of the x-ray generator was varied at 50 kV, 60 kV and 70 kV, while filament current was set at 100 mA and exposure time was at 5 ms. Honey bee was identified based on the image line profile that indicated the distribution of linear absorption coefficient (µ) for each sample. The analyses on the image line profile showed that at the voltage of 50 kV and 70 kV the three kinds of the honey bee can be distinguished. However, at the voltage of 60 kV the difference among honey bee was unable to be identified.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
  • PENGEMBANGAN CATU DAYA PRESISI DISPLAY DIGITAL UNTUK PRAKTIKUM FISIKA
           LISTRIK DINAMIS

    • Authors: Bushra Hamid, Frans Rizal Agustiyanto, Yulkifli Yulkifli
      Pages: 193 - 202
      Abstract: This study aims to generate power supply precision instrument digital display a valid and practical for students of physics 3rd semester of the school year 2014/2015. This research includes development research (research development) of the power supply circuit that has been common there are some drawbacks, namely, the output of output that does not fit, there is still AC voltage on the output value, the output voltage is unstable, so that the results of the lab basic physics 2 be not in accordance with the results of the theory. The addition of the diode bridge circuit helps perfect output voltage into DC, the capacitors in the circuit capacity was raised as a reliever ripple or ripples form to obtain a stable DC voltage value, for a voltage stabilizer is also used IC9815 surge protector. Limited trial conducted in STAIN Batusangakar to 26 students. Based on the results of data analysis has been carried out can be summarized as follows: (1) The results of the validation tool precision power supply digital display is very valid. (2) The results of trials carried out showed that the practicalities have met the criteria that can be used and implemented in a lab with practicality very practical value.
      PubDate: 2017-03-15
      Issue No: Vol. 8, No. 2 (2017)
       
 
 
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