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Sainstek : Jurnal Sains dan Teknologi

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Published by Institut Agama Islam Negeri Batusangkar

ISSN : 20858019 EISSN : 2580278X DOI : http://dx.doi.org/10.31958/js

Core Subject : Science, Education,

Computer Science & IT Other

Arjuna Subject : Umum - Umum

Articles 8 Documents

Search results for , issue "Vol 7, No 2 (2015)" : 8 Documents clear

PEMBUATAN ALAT UKUR KELAJUAN ANGIN MENGGUNAKAN SENSOR OPTOCOUPLER DENGAN DISPLAY PC Yanti, Nurfitriza; Yulkifli, Yulkifli; Kamus, Zulhendri
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

The wind is one of the important parameters in meteorology to determine weather and climate. It can be determined by using two quantity measured, such us speed and direction of wind. Based on the result of measuring will obtain important information that can be used for disaster prevention. For measuring of wind speed, this reserch design a measurement using optocoupler sensor to determine wind speed with change of sensor resistance. The sensor is conected to an electronic circuit and a microcontroller Arduino Uno Rev3 and it is programmed to get the desired results. Based on data analysis, there are two result of research namely performance and design specifications. The instrument consists of two parts; the electronic circuits and mechanical parts making up the system of measuring instruments of wind speed. Based on the results conducted, the accuracy of this measuring instrument is 91.39% with 3.22% error percentage and the accuracy of the instrument was 98.9% with 1:11% relative error percentage.Key words: sensor optocoupler, microcontroler arduino

SIMULASI PENGONTROLAN PINTU HALTE BUS WAY MENGGUNAKAN SENSOR LED INFRA RED DAN INTERFACE PORT PARALLEL Musril, Hari Antoni
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

Along with growth of computer technology, at the moment computer not only exploited for the application of having the character of public like reporting processes, data, but also exploited for the operation of equipment and system controller. In this research, writer try the application of personal computer as system of door control at a halte of bus way by using one tide sensor the LED infrared placed in way in at special band of bus way and one tide sensor the LED infrared again placed in constrictor wall. By exploiting electronics component as controller of door of halte of bus way supported with the language programming Borland Delphi 7.0, writer have earned to design a prototype which can give the amenity of management a halte of bus way.Key words: sensor LED infra red, interface port parallel

PEMBUATAN ALAT UKUR SALINITAS DAN KEKERUHAN AIR MENGGUNAKAN SENSOR ELEKTRODA DAN LDR Siltri, Dina Mulya; Yohandri, Yohandri; Zulhendri Kamus, Zulhendri Kamus
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

The objective of this research is to determine both performance and design spesification of Salinitymeter and Turbiditymeter. This system combined from several sub systems such as electrode and Light Dependent Resistor (LDR) sensor, microcontroller Arduino, Liquid Crystal Display (LCD) and Light Emiting Diode (LED) indicators. The variable of this research are salinity and turbidity. The result of this research divided in two parts. The first is performance spesification, this system using copper electrode as salinity sensor and LDR as turbidity sensor. This consist of two plastic box which are circuit box and sample box. The second is design spesification that consist of some data such as accuration and precision. Salinity measurement has accuration 95.71% with precision 97.22%, Turbidity measurement has 96.25 % of accuration and 97.69% of precision.Key words: salinity, turbidity, electrode sensor

TCNQ-BASED POROUS COORDINATION POLYMERS SYNTHESIS AND SORPTION PROPERTIES STUDY IN MAGNETIC FIELD Zubir, Moondra; Hamasaki, Atom; Ozeki, Sumio
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

Porous coordination polymers (PCPs) were synthesized with used TCNQ anion that acts as cross linker connecting and bipyridine to form a 3D framework. In these study, we use zinc and manganese metal ion as centre of complex coordination. Green crystal of Zn(TCNQ-TCNQ)bpy.1.5 benzene and Mn(TCNQ-TCNQ)bpy.1.5 benzene was successfully synthesized in no under magnetic field (0T) and under magnetic field 6T. XRD patterns of Zn(TCNQ-TCNQ)bpy.1.5 benzene 0T and 6T shown not significant different pattern that indicate no different crytal formed. XRD patterns of Mn(TCNQ-TCNQ)bpy.1.5 benzene also shown not significant different but we found five different intensity ratio peaks that possibility it was a little bit changing of crystal structure. To investigate the pores properties, adsorption isotherm was performe for oxygen gas in 77 K and the guest of benzene were removed at 413 K for 3 hours under low pressure. Zn(TCNQ-TCNQ)bpy}1.5benzene 0T and 6T oxygen adsorption isotherms shows the unique sorption isotherms by gate pressure profile. On other hand, Mn(TCNQ-TCNQ)bpy}1.5 benzene 0T and 6T shows type 1 adsorption isotherms for micropores materials. Adsorption isotherm was also determined in magnetic field 6T for all crystal, and shows shift of gate pressure for Zn compounds and enhance the amount of oxygen adsorbed for all kind of compounds.Key words: porous coordination polymers, polymers synthesis, magnetic field

PREDIKSI CLUSTERING, CALCULATION DAN CLASSIFICATION FRUIT AND VEGETABLE CONSUMPTION ADRIYENDI, ADRIYENDI
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

Prediction model using combination of K-Means Clustering, Excel Function, and Naïve Bayes Classifier. Process is dataset, clustering, calculation, classification and prediction. Dataset source on BPS 2013 about consumption of fruit and vegetable. Clustering using K-Means Clustering. Clustering by output Cluster 1, Cluster 2, and Cluster 3. Calculation using Excel. Calculation by output Priority Yes and Priority No. Classification using Naïve Bayes Classifier. Classification by output Class Good and Class Bad. All data processing for clustering, calculation, and classification using Excel. Experimental results on BPS 2013 Dataset show percentage of fruit consumption 42,42% Class Good (class above average) and percentage fruit consumption of fruit consumption 57,58% Class Bad (class below average). Percentage of vegetable consumption 45,45% Clas Good (class above average) and percentage of vegetable consumption 54,55% Class Bad (class below average). Clustering, calculation and classification can be combined becamed prediction model.Key words: clustering, calculation, classification, fruit and vegetable consumption

PEMISAHAN ANION MENGGUNAKAN FASA DIAM HILIC IMIDAZOL PADA HYDROPHILIC INTERACTION LIQUID CHROMATOGRAPHY DENGAN PENAMBAHAN GARAM AMMONIUM ASETAT Mayaserli, Dyna Putri
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

The need to detect anions and cations in a variety of environmental water samples more rapidly along with the increasing environmental problems and the time required analytical methods are precise, fast, simple and can provide an accurate assessment. Hydrophilic Interaction Liquid Chromatography (HILIC) is an extremely precise technique for separating polar compounds or compounds that are hydrophilic. The purpose of this study is to assess the separation of anions using HILIC stationary phases imidazole in hydrophilic interaction liquid chromatography with the addition of ammonium acetate salt. From the research that has been done can be concluded Imidazoles HILIC can separate SCN- anion, NO 3, NO 2, Br, and I- BrO3- using acetonitrile mobile phase. The addition of salt Ammonium Acetate in the mobile phase can increase the sensitivity and selectivity of anions. So that the resulting peak sharper and bigger.Key words: HILIC Imidazol, anion, HILIC

MODEL PEMBANGKIT DATA CURAH HUJAN: STUDI KASUS STASIUN SIMPANG ALAI KOTA PADANG Sudiar, Nofi Yendri
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

The effort on constructing weather data generator to cope with the scarcity of daily rainfall data is becoming essential recently. The objective of the paper is to generate rainfall daily data using stochastic spreadsheet. This technique can generate random values derived from the Gamma distribution which is initiated by the determination of rainfall probabilities, the occurrences on certain days and followed by the generation of rainfall height. The result showed that the rainfall data generator in Padang at period 1976-2005 showed consistent patterns with the observation eventhough simulation on day 180th the value is too high. Based on T-paired test, it showed no statistically significant different between simulation and observation (P-Value=0.000). Thus, the model can be employed as daily rainfall generator that can be further used to support the sustanaibility of agricultural activitiesin and food security in Padang. Key words: the scarcity, Gamma distribution, food security

ANALISA DAN IMPLEMENTASI KNOWLEDGE MANAGEMENT SYSTEM: STUDI KASUS DI SEKOLAH MENENGAH ATAS NEGERI 1 BAYANG Putra, Ondra Eka
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 2 (2015)
Publisher : IAIN Batusangkar

Found lack of good management of knowledge School SMA Negeri 1 Bayang. Knowledge management is not good can cause a lack of knowledge transmission is only delivered directly. This is because the learning activities are only delivered face to face. Knowledge is one thing that is very important for students, teachers and employees at the school, the knowledge does not have to be obtained in person or face-to-face between teachers, students and employees who share knowledge. In this study will be designed a system that can manage knowledge so well that teachers, students and employees can share knowledge and information for the actors who needs although do not follow the forum directly to the knowledge management system, when students can not attend classes can still get the material from integrated system, delivery of information by the school can also be obtained by students although unable to attend school, the teacher can not attend a workshop or meeting can get the information or the results of the workshop or meeting.Key words: knowledge management system, knowledge sharing and information

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Marjoni Imamora

Contact Email -

Phone +6282169719397

Journal Mail Official sainstek@iainbatusangkar.ac.id

Editorial Address Fakultas Tarbiyah dan Ilmu Keguruan IAIN Batusangkar Jl. Sudirman No. 137 Kuburajo Lima Kaum Batusangkar, Sumatera Barat. 27213

Location Kab. tanah datar, Sumatera barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Marjoni Imamora

Contact Email
-

Phone
+6282169719397

Journal Mail Official
sainstek@iainbatusangkar.ac.id

Editorial Address
Fakultas Tarbiyah dan Ilmu Keguruan IAIN Batusangkar Jl. Sudirman No. 137 Kuburajo Lima Kaum Batusangkar, Sumatera Barat. 27213

Location
Kab. tanah datar,

Sumatera barat

INDONESIA