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ISOLASI KHITIN DARI LIMBAH KULIT UDANG (DENDROBRANCIATA SP) DAN TRANFORMASINYA MENJADI KHITOSAN SEBAGAI BAHAN PENYERAP LOGAM TIMBAL (PB ) Lestari, Intan
Journal of The Indonesian Society of Integrated Chemistry Vol 1 No 1 (2009): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.684 KB) | DOI: 10.22437/jisic.v1i1.5090

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Chitin was isolated from shrimp shell then transformed into chitosan which used as adsorbent agent of heavy metal such as lead(Pb). Then Chitin and Chitosan were identified based on Ultraviolet(UV) and infrared(IR) spectrum. The amount of lead was measured by atomic absorption spectroscopy(AAS). The yield of chitin which isolated from shrimp shell was 32% and chitosan found out 85%. By comparing the UV and IR spectrum of isolated chitin and chitosan with authentic compound showed similar pattern which characterized by present of amine, carbonyl and acetyl groups. Chitosan was used to absorption test for lead with optimal condition at 1.5g of chitosan mass and the contact timing on 60 min. The absorption efficiency was 98.9%.
Pengaruh Emotional Marketing dan Spiritual Marketing terhadap Loyalitas Nasabah Tabungan BSM pada Bank Syariah Mandiri KCP Cirebon Siliwangi Lestari, Intan; Kusumadewi, Rita
Al-Amwal : Jurnal Ekonomi dan Perbankan Syariah Vol 9, No 2 (2017)
Publisher : IAIN Syekh Nurjati Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.32 KB) | DOI: 10.24235/amwal.v9i2.1749

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AbstrakMembangun loyalitas adalah bukan pilihan lagi dalam dunia perbankan. Terlebih beberapa tahun terakhir ini muncul satu trend, yaitu kecenderungan nasabah memiliki lebih dari satu rekening tabungan pada Bank yang berbeda. Untuk itu Bank syariah perlu membangun loyalitas nasabah, salah satu cara yang dilakukan adalah dengan pemasaran. Kunci utama dari pemasaran dalam perbankan yaitu membangun hubungan yang kuat secara berkelanjutan dengan nasabah. Beberapa hubungan yang coba dibangun oleh bank syariah dalam pemasaran adalah hubungan secara emosional dan spiritual. Dalam pemasaran lebih dikenal dengan nama emotional marketing dan spiritual marketing. Penelitian ini menggunakan pendekatan kuantitatif. Data yang digunakan dalam penelitian ini adalah data primer dengan teknik pengumpulan data melalui penyebaran kuesioner kepada 100 orang responden nasabah tabungan BSM pada Bank Syariah Mandiri KCP Cirebon Siliwangi. Pengujian menggunakan uji regresi linear berganda dengan SPSS (Stastistical Product and Service Solution) versi 21.0. Hasil penelitian menunjukkan bahwa secara parsial emotional marketing memiliki pengaruh terhadap loyalitas nasabah dengan nilai signifikansi 0,000 dan > yaitu 6,329 > 1,660. Kemudian spiritual marketing memiliki pengaruh terhadap loyalitas nasabah dengan nilai signifikansi 0,000 dan > yaitu 4,919 > 1,660. Dan secara simultan emotional marketing dan spiritual marketing memiliki pengaruh terhadap loyalitas nasabah dengan nilai signifikansi 0,000 dan > yaitu 38,171 > 2,36 dengan koefisien determinasi sebesar 44%, sementara sisanya 56% dipengaruhi oleh faktor lain.Kata Kunci: Emotional Marketing, Spiritual Marketing, dan Loyalitas Nasabah AbstractBuilding loyalty is no longer a viable option in the banking world. Especially the last few years comes a trend, namely the tendency of customers to have more than one savings account at different Banks. For that Sharia Bank needs to build customer loyalty, one way to do is with marketing. The main key of marketing in banking is to build a strong relationship in a sustainable manner with customers. Some relationships that the sharia bank is trying to build in marketing are emotionally and spirituall. This research uses quantitative approach. The data used in this study is primary data with data collection techniques through the distribution of questionnaires to 100 respondents of BSM savings customers in Bank Syariah Mandiri KCP Cirebon Siliwangi. The test used multiple linear regression test with SPSS (Stastistical Product and Service Solution) version 21.0. The results showed that partially emotional marketing has an influence on customer loyalty with a significance value of 0.000 and t count > t table is 6.329> 1.660. Then the spiritual marketing has an influence on customer loyalty with a significance value of 0.000 and t count > t table of 4.919> 1.660. And simultaneously emotional marketing and spiritual marketing have influence to customer loyalty with value of significance 0.000 and F_count > F_table that is 38,171> 2,36 with determination coefficient equal to 44%, while the rest 56% influenced by other factor.Keywords: Emotional Marketing, Spiritual Marketing, and Customer Loyalty
ANALISA DAN PERANCANGAN VOICE OVER INTERNET PROTOKOL(VOIP) MENGGUNAKAN TEKNOLOGI OPEN SOURCE PADA PUSAT TEKNOLOGI INFORMASI DAN PANGKALAN DATA UIN SUSKA RIAU Saputra, Eki; Lestari, Intan
Jurnal Sains dan Teknologi Industri Vol 12, No 1 (2014): Desember 2014
Publisher : Fakultas Sains dan Teknologi

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Abstract

Teknologi jaringan komputer dan teknologi komunikasi saat ini berkembang dengan cepat dan telah menciptakan aplikasi ? aplikasi baru seperti VoIP (Voice Over Internet Protokol). Teknologi ini bekerja dengan merubah suara menjadi format digital yang dapat dikirimkan melalui jaringan lan maupun internet. Sebelum adanya VoIP, komunikasi suara yang dilakukan dalam lingkungan sebuah instansi menggunakan telepon PSTN. Hal ini tentu saja membuat terjadinya pemborosan biaya operasional instansi. VoIP (Voice Over Internet Protokol) menjadi solusi yang tepat untuk menyelesaikan masalah tersebut. Membangun Server VoIP diperlukan sebuah distro linux. Debian merupakan distro linux yang stabil dan cukup handal untuk membangun server VoIP.Memulai komunikasi suara melalui VoIP hanya memerlukan seperangkat komputer, microphone ,speaker, serta koneksi internet maupun jaringan LAN.Manfaat yang akan didapat dengan adanya teknologi VoIP di lingkungan instansi, maka karyawan dan dosen yang berada pada fakultas dan lembaga terkait dapat berkomunikasi satu sama lain menggunakan VoIP via internet tanpa mengeluarkan biaya telepon lagi.
PENENTUAN NILAI PREMI ASURANSI PERTANIAN PADA KOMODITAS KOPI BERBASIS HARGA INTERNASIONAL MENGGUNAKAN MODEL MEAN REVERSION DENGAN LOMPATAN LESTARI, INTAN; DHARMAWAN, KOMANG; NILAKUSMAWATI, DESAK PUTU EKA
E-Jurnal Matematika Vol 6 No 4 (2017)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2017.v06.i04.p175

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Agricultural insurance with the interantional price is new insurance in Indonesia. The international insurance premium is given if the international prices lower than the determined trigger value. The purpose of this study is to presents the steps needed to determine the premium value of the agricultural insurance. The steps are to search data of the international prices and local prices commodity coffee, calculate the return of both data, calculate descriptive statistic, calculate correlation between international prices of commodity coffee and local prices commodity coffee, estimate the parameter by using Maksimum Likelihood Estimasi(MLE), to do the Monte Carlo simulation by using Mean Reversion with Jump Diffusion, to determine the production cost, normality log test, to determine the trigger indexs, and to count the premium value with put cash-or-nothing option. On this study if international prices lower than the determined trigger value, trigger payments as much as Rp 20.248.282,4/Ha based on trigger index as many Rp 24.900/kg, so amount of premium payment equals Rp 334.000.
HUBUNGAN PERSEPSI SISWA TENTANG POLA ASUH ORANG TUA DENGAN MOTIVASI BELAJAR SISWA Lestari, Intan; Ambarita, Alben; Sofiani, Siti Rachmah
Jurnal Pedagogik Vol 4, No 4 (2016): Jurnal Pedagogik
Publisher : Jurnal Pedagogik

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Abstract

The purpose of this research was to find a significant correlation between the students perception about parenting parents with student motivation. This type of research was correlation research. The data were collected by using questionnaire and of data instrument is questionnaire with Likert scale, which tested for validity and reliability in advance. The result of the hypothesis test showed correlation coefficient variable parenting parents with students’ motivation variable is r = 0,464 with thitung > ttableis 4,626 > 2,000 (with α = 0,05). It means, the significant correlation between the students perception about parenting parents with student motivation. The contribution of variable X towards variable Y is 21,5%, while 78,5% influenced by variables or other factors not discussed in this study. Tujuan penelitian ini adalah untuk mengetahui hubungan antara persepsi siswa tentang pola asuh orang tua dengan motivasi belajar siswa. Jenis penelitian ini adalah penelitian korelasional. Teknik pengumpulan data menggunakan kuesioner (angket) dan instrumen pengumpul data berupa angket dengan skala Likert, yang sebelumnya diuji validitas dan reliabilitas. Hasil perhitungan uji hipotesis menunjukkan nilai koefisien korelasi variabel pola asuh orang tua dengan variabel motivasi belajar siswa yaitu  r = 0,464 dengan thitung > ttabel yaitu 4,626 > 2,000 (dengan α = 0,05). Artinya terdapat  hubungan yang signifikan antara persepsi siswa tentang pola asuh orang tua dengan motivasi belajar siswa. Kontribusi variabel X terhadap variabel Y sebesar 21,5%,  sedangkan  78,5%  dipengaruhi  oleh  variabel  atau  faktor  lain  yang  tidak dibahas pada penelitian ini. Kata kunci: persepsi, pola asuh, motivasi belajar.
HUBUNGAN PERSEPSI SISWA TENTANG POLA ASUH ORANG TUA DENGAN MOTIVASI BELAJAR SISWA Lestari, Intan; Ambarita, Alben; Sofiani, Siti Rachmah
Jurnal Pedagogik Vol 4, No 4 (2016): Jurnal Pedagogik
Publisher : Jurnal Pedagogik

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this research was to find a significant correlation between the students perception about parenting parents with student motivation. This type of research was correlation research. The data were collected by using questionnaire of data instrument is questionnaire with Likert scale, which tested for validity and reliability in advance. The result of the hypothesis test showed correlation coefficient variable parenting parents with students’ motivation variable is r = 0,464 with thitung > ttableis 4,626 > 2,000 (with α = 0,05). It means, the significant correlation between the students perception about parenting parents with student motivation. The contribution of variable X towards variable Y is 21,5%, while 78,5% influenced by variables or other factors not discussed in this study.Tujuan penelitian ini adalah untuk mengetahui hubungan antara persepsi siswa tentang pola asuh orang tua dengan motivasi belajar siswa. Jenis penelitian ini adalah penelitian korelasional. Teknik pengumpulan data menggunakan kuesioner (angket) dan instrumen pengumpul data berupa angket dengan skala Likert, yang sebelumnya diuji validitas dan reliabilitas. Hasil perhitungan uji hipotesis menunjukkan nilai koefisien korelasi variabel pola asuh orang tua dengan variabel motivasi belajar siswa yaitu  r = 0,464 dengan thitung > ttabel yaitu 4,626 > 2,000 (dengan α = 0,05). Artinya terdapat  hubungan yang signifikan antara persepsi siswa tentang pola asuh orang tua dengan motivasi belajar siswa. Kontribusi variabel X terhadap variabel Y sebesar 21,5%,  sedangkan  78,5%  dipengaruhi  oleh  variabel  atau  faktor  lain  yang  tidak dibahas pada penelitian ini.Kata kunci: persepsi, pola asuh, motivasi belajar.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI NON PERFORMING LOAN PADA PT. BANK NEGARA INDONESIA (PERSERO) TBK. PERIODE 2008-2015 Lestari, Intan
Jurnal Ilmiah Mahasiswa FEB Vol 4, No 2 : Semester Genap 2015/2016
Publisher : Fakultas Ekonomi dan Bisnis Universitas Brawijaya

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Abstract

This research aim is to know about internal factors and external factors which are influences for the Non-Performing Loan on Bank Negara Indonesia in period 2008-2015.This research was conducted with quota sampling. The data used in this study were obtained from the Banking Quarterly Report 2008-2015 and Bank Indonesia Quarterly Report. Methods of data analysis using multiple linear regression analysis to determine the effect of Capital Adequacy Ratio (CAR), Loan to Deposit Ratio (LDR), Bank Size, Economic Growth, and Inflation to Non - Performing Loan (NPL) of Bank Negara Indonesia.Based on the test for normality, autocorrelation test, multicolinearity test and heteroscedasticity test, there were no deviations from goodness of fit. The result of the research simultanly shows that CAR, LDR, bank size, economic growth and inflation influence significantly against NPL. The result of the research partially shows that variables like CAR, bank size, economic growth and inflation infulence significant against NPL, while LDR influence not significant against NPL. The coefficient determinant (R2) of 93.3% shows that NPL can be explained by the variables of the research.Keywords: NPL, CAR, LDR, bank size, economic growth, inflation 
INTERPRETASI AKUSTIK IMPEDANSI (AI) MENGGUNAKAN DATA SEISMIK DAN DATA SUMUR UNTUK MENENTUKAN ZONA PROSPEK HIDROKARBON Hapsari, Hanum Eko; Lestari, Intan; Samsidar, Samsidar
Komunikasi Fisika Indonesia Vol 15, No 2 (2018)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.15.2.135-138

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Research has been conducted to determine the prospect of hydrocarbon zones using the interpretation of acoustic impedance (AI) seismic method in Field X, South Sumatra Basin, Jambi Province. The purpose of this study was to determine the AI value on the distribution map of AI values for hydrocarbon prospect zones in Field X. In this study the data used were 3D seismic data with PSTM (Post-Stack Time Migration) type, and well data. Data processing using Hampson and Russell (HRS) software used in the mining and petroleum fields has a function for subsurface modeling below the ground surface of reservoir characterization. Well data will be linked to seismic data so that the well data will be in the actual position. The distribution of hydrocarbon prospect zones in PEV-1 well can be seen first in crossplot analysis at a depth of 1760-1798 m with AI cutoff value indicated as sandstone ranging from 8450 (m s)*(g/cc) and above, with a high correlation value 0.818 time shift 0 ms. Picking horizon is carried out to determine the target zone layer and its continuity laterally on seismic volume so that a model based can be done as an initial subsurface description below the soil surface at PEV-1 well. Then the next step is a post-stack analysis based model to find out how much the error value of the target zone prediction with certain parameters through the PEV-1 well data. So with a correlation value of 0.936429 and an error value of 0.35227 in the post-stack analysis model based, AI inversion in the PEV-1 well layer which is the target zone of the hydrocarbon prospect is indicated by the range of 8450 (m/s)*(g/cc) which is indicated as sandstone.
EFEKTIVITAS PEMBELAJARAN KOOPERATIF BERBANTUAN FLIPBOOK TERHADAP HASIL BELAJAR SISWA PADA MATERI VIRUS DI SMA Lestari, Intan; Ariyati, Eka; Marlina, Reni
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 5, No 06 (2016): Juni 2016
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

Abstrak: Penelitian ini bertujuan mengetahui efektivitas pembelajaran kooperatif berbantuan flipbook terhadap hasil belajar siswa pada materi virus di kelas X SMA Negeri 1 Salatiga Kabupaten Sambas. Bentuk penelitian ini adalah Quasi Eksperiment dengan rancangan Nonequivalent Control Group Design. Teknik pengambilan sampel dalam penelitian ini adalah sampel jenuh. Sampel penelitian yaitu siswa kelas XB sebagai kelas eksperimen dan siswa kelas XA sebagai kelas kontrol. Berdasarkan hasil analisis data diperoleh rata-rata hasil belajar siswa yang diajar dengan pembelajaran kooperatif berbantuan flipbook sebesar 46,25, sedangkan kelas yang diajar dengan pembelajaran konvensional sebesar 41,40. Hasil uji t pada ? = 5% menunjukkan perbedaan yang signifikan antara skor rata-rata hasil belajar siswa pada kelas eksperimen dan kelas kontrol. Berdasarkan perhitungan effect size diperoleh nilai 0,96 (kategori tinggi), artinya pembelajaran kooperatif berbantuan flipbook efektif meningkatkan hasil belajar siswa pada materi virus. Kata Kunci: Efektivitas, Pembelajaran Kooperatif,  Flipbook, Virus.  Abstract: This research aims to determine the effectiveness of cooperative learning using flipbook toward student learning outcomes in virus material to tenth grade students of SMA Negeri 1 Salatiga Sambas. The form of this research was Quasi Experimen with Nonequivalent Control Group Design. The sampling technique in this research is saturated samples. The reseach sampling using XB grade students as an experimental class and XA grade students as an control class. According to the analysis of data obtained by the average of students outcomes taught by cooperative learning using flipbook is 46,25, while classes taught by conventional learning is 41,40. The result at ? = 5% showed a significant differences between the average score of students learning outcomes in the experimental class and control class. according the value of the effect size is 0,96 (including high category), which means that  cooperative learning using flipbook is effective to enhance student?s learning outcome in virus material. Keywords: Effectiveness, Cooperative Learning, Flipbook, Virus.
Amobilisasi Biji Durian (Durio zibethinus) dalam Ca-Alginat sebagai biosorben zat warna Metilen Biru Lestari, Intan
CHEMPUBLISH JOURNAL Vol 4 No 1 (2019): Chempublish Journal
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.098 KB) | DOI: 10.22437/chp.v4i1.6900

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Telah dilakukan penyerapan zat warna metilen biru menggunakan biji durian teramobilisasi Ca-alginat. Dalam penelitian ini serbuk biji durian di amobilisasi dengan Ca-alginat dengan teknik penjebakan (entrapment). Biosorben yang diperoleh dikarakterisasi dengan intrumen XRF, FTIR dan SEM. Biosorben biji durian teramobilisasi Ca-alginat digunakan untuk penyerapan metilen biru dengan mempelajari pengaruh parameter adsorbsi seperti pH, waktu kontak, massa dan konsentrasi metilen biru. Dari hasil penyerapan diperoleh pH optimal yaitu pada pH 3, waktu kontak optimum 30 menit, massa biosorben 0,5 g dan konsentrasi zat warna optimal 3 ppm. Larutan HNO3 digunakan untuk regenerasi biosorben dan penyerapan metilen biru  dapat  dilakukan untuk 3 kali ulangan.