Garuda - Garba Rujukan Digital

PERANCANGAN ALAT UKUR TDS (TOTAL DISSOLVED SOLID) AIR DENGAN SENSOR KONDUKTIVITAS SECARA REAL TIME Zamora, Ronaldi; Harmadi, Harmadi; Wildian, Wildian
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

An experiment was done to design of conductivity sensor for real time measurement of TDS (Total Dissolved Solid) in water. The instrument system incluedes hardware and software systems. The hardware system consist conductivity sensor, microcontroller arduino uno, and a PC. While the software system covers the procces and making on display measurement result based on LabVIEW. TDS information is displayed in the form of digital, analog and graph in real time. Another advantage of this measurement system is that the TDS data can be stored in file format xlxs. The measurement data is done by comparing the system is designed with a standard measuring instrument that is TDS EZDO E 7200. The data obtained through measurement errors were analyzed using the theory and methods of the graph. Based on the analysis conducted found the output voltage of the conductivity sensor rises with the increase in water with a sensitivity of 0,924 mV/ppm. The instrument of TDS measurement data has an accuracy rate of 97.17 %Keyword: microcontroller, water, TDS, LabVIEW

POLA DISTRIBUSI MITOKONDRIA SEL-SEL TROFOBLAS BLASTOSIS MENCIT (Mus Muculus Albinus) DAN PENGARUHNYA TERHADAP KEGAGALAN HATCHING DAN IMPLANTASI Helmita, Roza; Djuwita, Ita; Purwantara, Bambang
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

Implantation is the most critical stage in the establishment of pregnancy. In mammals, it has been estimated that between 25% and 60% of conceptuses are lost before or at the time of implantation. The objectives of this study were to investigate the ability of blastocyst hatching and attachment of trophoblast cells in in vitro, the outgrowth and differentiation of trophoblast cells in in vitro culture of hatched and non hatched blastocyst, the activity of mitochondria NADH-CoQ reductase and the pattern of mitochondrial distribution. Blastocysts were collected from mice cornua utery at day-4 of pregnancy and were divided into 3 groups: blastocysts undergo hatching within 24 hours, 48 hours and non hatching. Embryos were cultured in DMEM medium in 5% CO2 incubator at 37°C for 10 days. The trophoblasts monolayer were processed for Giemsa staining and histochemistry analysis of NADH-tetrazolium reductase activity. The outgrowth of trophoblast cells were measured using eyespiece micrometer. The results showed the ability of blastocyst hatching in in vitro were different. The trophoblast outgrowth diameter of 24 h hatched blastocyst was significantly different with the 48 h hatched and non hatched blastocyst. The activity of NADH-CoQ reductase of 24 h and 48 h hatched blastocysts showed higher intensity than the non hatched blastocysts (P<0,05) and the distribution of mitochondrial in trophoblast cell cytoplasma of 24 h and 48 h hatched blastocyst were homogen around nucleus whereas thoes of non hatched blastocyst were cluster and heterogen. In conclusion, in in vitro study the failure of blastocysts hatching and implantation was due to the failure of outgrowth and differentiation of the trofoblast cells and the impairment of NADH-CoQ reductase activity in complex I mitochondria to produce energy and the pattern of mitochondrial distribution.Key words: mitochondrial distribution, NADH- tetrazolium reductase, trophoblast, implantation

MORFOLOGI Bruguiera cylindrica (L.) Blume YANG TUMBUH DI HUTAN MANGROVE KECAMATAN SIBERUT UTARA KABUPATEN KEPULAUAN MENTAWAI Rizki, Rizki; Safitri, Elza; Asroen, Asroen
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

Morphology is the result of expression of a genotype that is influenced by environmental factors. Plant morphological variations may occur due to the different conditions of the region, these conditions may include differences in geographical location, ecological conditions such as variations in temperature, humidity, nutrition and others. Has done research on the morphology of Bruguiera cylindrica (L.) Blume grown in mangrove forest districts North Siberut Mentawai District. This morphological study aims to determine the morphology B. Cylindrica and compare it with the data that has been there before. This study was conducted in May-June 2015 in the mangrove forest District of North Siberut Mentawai District. The research method used in the study was a survey and a collection directly in the field. Samples contained area of mangrove forests are taken at random and then proceed to describe the morphology of the species B. Cylindica structure. Based on the research that has been dilakkan B. cylindrica can diketahuhi there are some differences in morphological characters on the roots of these species such as shape, color roots, tree height, color of trunks and branches, filotaksis leaves, leaf color, leaf length, flower color, fruit color, length and the diameter hipokotil. Then from this study can also be added some new information that has not been previously reported.Key word: morfologi Bruguiera cylindrica (L.) Blume, mangrove, mentawai

DIP-COATING SENYAWA KALSIUM FOSFAT DARI BATU KAPUR BUKIT TUI DENGAN VARIASI RATIO MOL Ca/P MELALUI METODE SOL-GEL Anggresani, Lia
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

Preparation of Dip-Coating Calcium Phosphate via sol-gel method using natural limestone Bukit Tui as calcium precursors and diammonium hydrogen phosphate as phosphorus precursors with various Ca/P mol ratio has been investigated. Etanol was used as solvent and DEA (dietanolamine) as stabilizing agent. Powder were prepared by calcinated the sol at 950oC. The results characterized by Fourier Transform Infra-red, X-Ray diffraction and Scanning Electron Microscopy. FTIR results showed that the vibration form was PO43-, P2O74-, O-H and CO2. X-Ray Diffraction (XRD) patterns of powder with various Ca/P mol ratio showed that the product of calcium phosphate was Ca2P2O7 and also found the hydroxyapatite Ca10(PO4)6(0H)2 in Ca/P ratio mol 1,7. Scanning Electron Microscopy (SEM) images of powder calcium phosphate revealed that their morphology were spheric and homogen. The coating process was done at glass substrate with coating speed 20 cm/min by calcinations at 400oC. . X-Ray Diffraction (XRD) patterns of thin layer showed that the product was Ca2P2O7 and Scanning Electron Microscopy (SEM) images of thin layer revealed that their morphology were bulk.Key words; natural limestone, calcium phosphate, hydroxyapatite, sol-gel, dip-coating

BUDIDAYA IKAN NILA PILIHAN UNTUK MENGATASI KETERGANTUNGAN PENDUDUK TERHADAP SUMBER DAYA HAYATI TAMAN NASIONAL KERINCI SEBLAT DI NAGARI LIMAU GADANG LUMPO Armen, Armen
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

The purpose of this research is to tilapia fish farming options to address the population's dependence on natural resources Kerinci National Park (TNKS) at Nagari Limes Tower Lumpo South Coastal District. The study involved people with the characteristics of the profession in the forest breadwinner TNKS with 40 households. In the year I conducted research information and guidance on: (1) the benefits to the ecosystem and human TNKS and the risk of making a living in TNKS; (2) create a pond breeding and rearing of tilapia; (3) the breeding and mendeder tilapia; (4) to make fish feed; (5) to collect data of economic activity conducted sample population. In II was found (1) fingerlings 25,000; (2) The rearing ponds and nursery 5 units, (3) feed production has been carried out by farmers. The findings of this study in the second year compared. Data taken form the sample frequency of visits to TNKS. The second year study lasted for 6 months. To see the similarities or differences between the mean results of economic activity used formula T-Test statistics. The results showed that the average percentage of traffic TNKS sample members for 6 months to 86%. Based on research on second year level visit to the pool group members each month TNKS 75.06%. The mean rate of decline in the frequency of visits to group members TNKS an approximately 11.06%. Decreased levels of group members visit the pool to TNKS the second year that the guide member can mengatasai tilapia fish farming population's dependence on TNKS. Thus concluded that the tilapia fish farming has made the choice to overcome the dependence on natural resources population Kerinci National Park (TNKS) at Nagari Limes Tower Lumpo South Coastal District with fairly good results,Key words: TNKS, Aquaculture, Tilapia, Natural Resources, Economic Activity

EFEK KONSENTRASI Cu PADA STRUKTUR DAN SIFAT HANTARAN LISTRIK NANOPARTIKEL CuPt Imamora, Marjoni; R, Setia Erlila; Rahmi, Elvy; Maiyena, Sri; Umar, Akrajas Ali
Sainstek : Jurnal Sains dan Teknologi Vol 7, No 1 (2015)
Publisher : IAIN Batusangkar

The investigation of bimetallic CuPt Nanoparticles (CuPt NPs) with average diameters in the 196.7±98 nm range have been prepared by the Liquid phase deposition methods and synthesized directly on an indium tin oxide (ITO) substrate. CuPt NPs with high surface defect grown on (ITO) surface were prepared via a simple immersion of the substrate into a solution contains 1 mM Potassium Hexachloro Platinate (K2PtCl6), 0.2 mM Anhydrous Copper (II) Sulfate (CuSO4) anhydrous, 0.01 M Sodium dodecyl sulfate (SDS) and 10 mM Formic acid for 4 h at room temperature. The modification of Cu2+ ion precursor play a role to determine the nanoparticles geometry obtained. The simultaneous reduction of metal ions leads to either a surface enriched with one component or an alloy type of structure depending on the bimetal composition. The bimetallic CuPt NPs dispersions are characterized by FESEM, EDX Mapping, XRD, HRTEM and XPS analysis.Key words: CuPt, Liquid phase deposition, Bimetallic CuPt NPs

GREEN CHEMISTRY PERSPECTIVE OF HYDROXY-METHYLFURFURAL MICROWAVE-ASSISTED ORGANIC SYNTHESES Khair, Miftahul; Rantwjik, Fred Van
Sainstek : Jurnal Sains dan Teknologi Vol 2, No 2 (2010)
Publisher : IAIN Batusangkar

Sintesis senyawa organic dengan microwave (MAOS) ditinjau dari aspek Kimia Hijau (Green Chemistry) menunjukkan hasil yang positif. Sebuah contoh penerapan pada sintesis senyawa organik yang juga hijau yakni hidroksimetilfurfural menunjukkan kebanyakan aspek 12 prinsip Kimia Hijau terpenuhi. Hal ini diperkuat dengan perhitungan atom ekonomi dan efesiensi yang cukup memadai.Kata kunci: kimia hijau, aspek kimia hijau (HMF), microwave

KEPADATAN POPULASI KUTU DAUN (Aphis craccivora Koch) PADA TANAMAN KACANG PANJANG DI KELURAHAN KURANJI KECAMATAN KURANJI PADANG Febriyanti, Febriyanti
Sainstek : Jurnal Sains dan Teknologi Vol 2, No 2 (2010)
Publisher : IAIN Batusangkar

Long peanut is one of the sources of protein which is easy to develop in every region. The problem of increasing the production of Long peanut is the existence of pest that destroys Long peanut. Pestwhich attack Long peanut is Aphis craccivora. In relation to that, it has been done a research about the population of Aphis craccivora of Long peanut in regency of Kuranji, Kuranji district,Padang. This research had been done on Mey 2007 in a garden of a farmer. This research used descriptive method, that is the observation directly to the field, and the data collection used Chemical Knock Down technique. Identification is done in the Laboratory of HPT department, Agriculture faculty,University ofAndalas,Padang. From this research, it is found that the population of Aphis craccivora is 83, 62 per plant. The population of Aphis craccivora is above the economic line.Key words: population, long peanut, Aphis craccivora, density

KAJIAN SIFAT MAGNETIK SEDIMEN TELUK KATURAI PULAU SIBERUT KEPULAUAN MENTAWAI HARIS, VENNY; Rifai, Hamdi
Sainstek : Jurnal Sains dan Teknologi Vol 2, No 2 (2010)
Publisher : IAIN Batusangkar

This study aimed to examine the magnetic properties of sediments from Teluk Katurai Siberut island Mentawai islands. The study on sediment samples from Teluk Katurai had been carried out by using three methods, i.e., measurements of AMS (Anisotropy of Magnetic Susceptibility) to determine the anisotropy shape of magnetic susceptibility, IRM (Isothermal Remanent Magnetization) to identify the their magnetic minerals contains based on the saturation curve, and AAS (Anisotropy of Anhysteretic Susceptibility) that produce anhisteritik susceptibility. From the stereonet plot and other anisotropy parameters were obtained that ellipsoid susceptibility form is oblate. It was also obtained that the type of magnetic mineral is magnetite based on magnetic saturation curves. Meanwhile the identification of grain size distribution was obtained by plotting the value of AMS versus AAS. The plots showed the magnetic grains of sediment was approximately 0.2 µm to 0.1µm.Key words: magnetic susceptibility, anisotropy, anhisteritic susceptibility

DAYA HAMBAT SARI TANAMAN OBAT TERHADAP PERTUMBUHAN BAKTERI STRAIN Methicillin Resistant Staphylococcus aureus (MRSA) Fifendy, Mades; Febrianti, Rhini; Putri, Dwi Hilda
Sainstek : Jurnal Sains dan Teknologi Vol 2, No 2 (2010)
Publisher : IAIN Batusangkar

Staphylococcus aureus infection can be treated with Methicilin, ? lactam class of antibiotics that have drug targets in the cell wall. Bacteria S. aureus that is resistant to methicillin called methicillin-resistant Staphylococcus aureus (MRSA). One alternative that can be used in strains of antibiotic-resistant bacteria that have this is to use medicinal plants. This study aimed to know the ability of medicinal plant extracts inhibit the growth of bacterial strains of MRSA. This kind of research is experimental research. Medicinal plants tested were Garlic, Turmeric, Aloe Vera, Daun Salam, Curcuma, Ginger, Betel Leaf and Alpinia galanga. As a control, which is used Amphicillin, ? lactam antibiotic class. The method used to determine the diameter of inhibition area of medicinal plant extracts is paper diffusion method. The results showed that all medicinal plants can inhibit bacterial growth of MRSA strains characterized by the inhibition zone formed on each treatment. The ability of garlic and turmeric extract better than Amphicillin and other medicinal plants to inhibit bacterial growth of MRSA strains.Kata kunci: inhibit, growth, bacteria, methicillin resistant staphylococcus aureus (MRSA)

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

Abstract

Abstract

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

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