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Sainstek
Published by Universitas Negeri Gorontalo
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Core Subject : Education,
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Articles 179 Documents
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ANALISIS KANDUNGAN LOGAM BERAT MERKURI DALAM AIR LAUT DI PERAIRAN SEKITAR BALAI BUDIDAYA IKAN PANTAI (BBIP) TELUK BUO BUNGUS TELUK KABUNG KOTA PADANG Nasra, Edi; Khair, Miftahul
Sainstek Vol 6, No 3, 2011
Publisher : Sainstek

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Abstract

Telah dilakukan penelitian untuk mengetahui kandungan logam merkuri dalam air laut di perairan sekitar Balai Budidaya Ikan Pantai (BBIP) Teluk Buo Bungus Teluk Kabung Kota Padang. Sampel air diambil tiga kali pada 9 titik lokasi dan dilakukan sesuai prosedur yang dikembangkan oleh Hosseini dkk yaitu sebanyak 50 mL sampel dan standar 1, 2, 3, 4, 5 g/L masing-masing dimasukkan dalam corong pisah, ditambahkan 5 mL KI 0.1 M dan buffer asetat sampai pH 5. Setelah ditambahkan 2.5 mL feroin dan 40 mL heksan campuran dikocok selama 10 menit sampai terjadi pemisahan. Lapisan organik dilarutkan dengan asetonitril dan diukur dengan Spektrofotometer pada panjang gelombang 509 nm. Dari tiga kali pengambilan didapatkan konsentrasi logam merkuri pada semua titik berada pada range tidak terdeteksi-0.2420 g/L dan masih dalam ambang yang diperbolehkan oleh KEPMENKLH No.2/MENKLH/I/1988 yaitu ? 3 g/L. Dari data yang didapatkan tidak terdapat persebaran yang merata dari logam merkuri pada titik-titik sampling dengan tiga kali pengambilang sampel. Hal ini disebabkan banyak faktor, diantaranya cuaca, kondisi perairan tersebut dan sifat volatil dari logammerkuri itu sendiri. Oleh sebab itu perlu dilakukan penyidikan yang lebih mendalam dan menyeluruh sehingga didapatkan hasil yang sesuai dengan kondisi yang sebenarnya. Kata Kunci: Kompleks Asossiasi, ekstraksi pelarut
PERFORMANCE VERY SMALL APARTURE TERMINAL (VSAT) DALAM KOMUNIKASI DATA Dali, Sri Wahyuni
Sainstek Vol 3, No 1, 2008
Publisher : Sainstek

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Abstract

VSAT (Very Small Aparture Terminal) or micro earth station is the telecommunications used data communications network between computer through satellite constructively by controller station with antenna; diameter of 1,8 m and also the form small and easyly installation at every user location. This research evaluate usage of network VSAT so that inferential in the end how far usage ofd data communications network evaluated from transmission media VSAT used and from this research can give the picture situation of the network use VSAT so that can give the data support for pengatran system performance and planning of network capacities in future. This research use the reference - the reference that relevance with VSAT and collect data of companies/ related/relevant institution as reference in analysing the data (throughput and delay) so that yield the information sistimatis concerning the network performance handal. This research result throughput VSAT canal is 0,32 or 32% and delay is 0,318 second for successful package ( free collision) and also to once remanding have delay 1,838 second.
PENGARUH ADITIF PADA SINTESIS NANOPARTIKEL Mn2O3 MELALUI PROSES SOL-GEL Ningsih, Sherly Kasuma Warda
Sainstek VOL 07, NO 01, 2013
Publisher : Jurnal Sainstek

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Abstract

Preparation of manganese oxide by sol-gel process has been studied. Mangese nitrate and isopropanol were used as precursor and solvent, respectively. The addition of various additives that used in this research were diethanolamine (DEA), ethylene diamine and ethylene gycol. The powders were formed by drying in the temperature of 110-110 oC and after heating at 500 oC for (1) one hour. The products were obtained black powders. The products were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The XRD patterns showed Mn2O3 forms were produced generally. Crystallite sizes of Mn2O3 were obtained in the range 54-82 nm. SEM micrograph clearly showed that powder had a bulk surface and hollow with hollow size is 0.1-1.9 m approximately.
METODE PEMBUKTIAN TEOREMA CAYLEY PADA TEORI GRAPH Abdullah, Abdul Wahab
Sainstek Vol4, No 3, 2009
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Abstract

This article describes two methods to prove Cayley Theorem in Graph Theory, through 1-1 corespondence between labelled tree - sequence and through Combinatorial Theory. Kata Kunci : Graph Theory, Combinatorial Theory, corespondence 1-1, labelled tree, Cayley Theorem
HUBUNGAN PENDIDIKAN ANAK USIA DINI DENGAN PERKEMBANGAN ANAK USIA LEBIH DARI 2-3 TAHUN DI TUMBLE TOTS KOTA GORONTALO Mobiliu, Suwarly
Sainstek Vol 6, No 2, 2011
Publisher : Sainstek

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Abstract

Masa usia dini merupakan periode emas (golden age) bagi perkembangan anak untuk memperoleh proses pendidikan. Periode ini adalah tahun-tahun berharga bagi seorang anak untuk mengenali berbagai macam fakta di lingkungannya sebagai stimilans terhadap perkembangannya. Penelitian ini dilaksanakan dengan mengguna-kan jenis penelitian korelasional. Populasi penelitian adalah seluruh tenaga pengajar dan seluruh anak berusia lebih dari 2-3 tahun di Tumble Tots. Sampel yang diambil sebanyak 27 orang dimana 7 orang tenaga pendidik dan 20 orang anak. Berdasarkan hasil penellitian menunjukkan bahwa terdapat hubungan antara pendidikan anak usia dini dengan perkembangan anak usia lebih dari 2-3 tahun di Tumble Tots Kota Gorontalo. Kata Kunci : Pendidikan Anak Usia Dini. Perkembangan Anak
EKSISTENSI SUPREMUM DAN INFIMUM DENGAN TEOREMA CANTOR DEDEKIND Bito, Nursiya
Sainstek Vol 5, No 3, 2010
Publisher : Jurnal Sainstek

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Abstract

In this paper, we will try to proof existence of supremum and infimum with Cantor Dedekind theorem. Before we discuss this material, necessary to introduce several basic concepts, especially Cut Dedekind and Supremum and Infimum concepts. The method we are presenting here is due to Richard Dedekind (1831-1916) whose work entitled What are and what should be numbers?. Cantor Dedekind theorem very important to show that nothing gap at real numbers system.
TEORI EVOLUSI ASAL USUL MAKHLUK HIDUP DAN ASAL USUL MANUSIA BERDASARKAN PERKEMBANGAN BIDANG GENETIKA MOLEKULER (BEBERAPA PEMIKIRAN PEMBELAJARAN TEORI EVOLUSI DI SEKOLAH) Nusantari, Elya
Sainstek Vol 1, No 3, 2006
Publisher : Sainstek

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Abstract

Human being evolution development, firstly started by many postulates and develop through Darwin evolution theory. The next development pointed out by focil findings and finaly shape human being evolution tree. Moleculer genetics development revealed how evolution concept develope. Firstly, evolution was a simple human being changing to be a complex human being. Through molecular genetics findings, evolution was genetic changing from human life to adaptive situation. The definition of evolution tree was not based on morfologys . But based on DNA analysis, namely tRNA and rRNA. Learning evolution theory at school need critical analysis in relation with development of material and sciens. It is needed spesific curriculum about human being origin.
PENTINGNYA APLIKASI PENANGANAN SPYWARE UNTUK KEAMANAN PRIVASI USER PADA SEBUAH KOMPUTER Bonok, Zainudin
Sainstek Vol 6, No 1, 2011
Publisher : Jurnal Sainstek

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Abstract

Spyware has made a lot of losses, such as using resource illegally and violation of users privacy. Therefore this research is being done with some purpose to implement a good examination file technique for spyware handling application, and to make spyware handling application which can erase spyware file that is found by it. The method which is used in this research is experimental observation by directly doing an experiment in making spyware handling application that used API functions in the searching files method. Also being used are the literature review and observation of the losses that is made by spyware. Furthermore, the analysis for program needs is using UML (Unified Modelling Language) method, then it is implemented using Microsoft Visual Basic 6.0 compiler and being tested using both black box and white box approaches. This research shows that the application which has been made can be used to search for spyware files, stopping process and deleting the spyware file. Keywods: Spayware, Unified Modelling Language
PENGARUH PERKEMBANGAN FASHION TERHADAP GAYA BERBUSANA (STUDI KASUS MAHASISWA FAKULTAS TEKNIK UNG) ., Rahmatiah
Sainstek Vol 4, No 1, 2009
Publisher : Sainstek

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Abstract

The research is aimed to know the effect of increasing of fashion to the clothing style of University student at FT UNG. The existence of fashion as view as thing that has side good-worse, beautiful-bad, praise-insult, productive-consumptive. The inclination of fashion become a part of life, because it must be inspect, known, and followed. Every body have right to determine their choose based on ethical and aesthetics of clothing. The increasing of fashion very effect to clothing style of University student at FT UNG. The matter was got from correlation result of examination moment person with remark r = 0,89 that significant on honestly standard. This matter was show relationship between increasing of fashion to the clothing style of university student at FT UNG is 80 %. From result statistic count with use real standard 0,05 get result ttabel= 1,6723 < t count = 15,7 > 1,6723 with free degree, examination criteria 15,7> 1,6723.This result between increasing to the significant effect because remark tcount = 15,7 >1,6723 is outside of equals area HO means that there is significant effect between increasing fashion to clothing style of university student at FT UNG.
EKOLOGI SEMUT API (Solenopsis invicta) Taib, Minarti
Sainstek VOL 06, NO 06, 2012
Publisher : Jurnal Sainstek

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Abstract

Ant (Solenopsis invicta) has the small body, social life and discipline the highest, loyal to the rule, smart and creative. Even the ant has the small body but it could hit the people and it cause a bite has liquid and swallen because it has poison and produce the poison chemistry such as acid format. The ant has role in ecosystem to hole the amound soil and it coused to pick soil up. It could live together with another living organism, so it is avoided from extinction and energy cycle on one habitat.

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