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Journal of RESIDU
Published by RC Institut
ISSN : 2598814X     EISSN : 25988131     DOI : -
Core Subject : Education,
Education
Journal of RESIDU is an open access published by RC-INSTITUT. The main objective of Journal of RESIDU is to provide a platform for the international scholars, academicians and researchers to share the contemporary thoughts in the fields of Education.
Arjuna Subject : -
Articles 292 Documents
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Preparasi Dye-Sensitized Solar Cell (DSSC) Berbasis Dye dari Buah Senduduk (Melastoma malabathtricum L.) dengan Variasi Tegangan Elektrodeposisi Cu pada TiO2 Luli, Rahmaneta
journal of residu Vol 3 No 21, Septem (2019): Journal of RESIDU, ISSN PRINT: 2598-814X ISSN ONLINE: 2598-8131
Publisher : RC-INSTITUT

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Abstract

Dye-Sensitized Solar Cell (DSSC) merupakan sel surya organik yang telah banyak dikembangkan. Pengunanan dye dari buah senduduk terkopigmentasi asam salisilat pada DSSC mampu meningkatkan efisiensi DSSC, namun efisiensi yang dihasilkan belum cukup tinggi untuk dikembangkan lebih lanjut menjadi sumber energi alternatif. Untuk itu perlu dilakukan upaya lain untuk  menghasilkan DSSC dengan efisiensi yang cukup tingggi yaitu dengan memodifikasi lapisan semikonduktor TiO2­. Modifikasi dilakukan dengan cara elektrodeposisi Cu pada lapisan TiO2. Elektrodeposisi Cu mengakibatkan terbentuknya kontak logam pada lapisan TiO2. Kontak logam pada lapisan TiO­2 dapat mengurangi proses rekombinasi dan mempercepat aliran elektron, sehingga modifikasi ini diharapkan mampu meningkatkan efisiensi DSSC. Karakterisasi zat warna menggunakan FTIR menunjukkan adanya gugus spesifik dari antosianin dan menggunakan UV-Vis memperlihatkan adanya pengaruh kopigmentasi terhadap daerah serapan zat warna, yaitu terjadi pergeseran batokromik dari λmax 505 nm menjadi 510 nm. Variasi tegangan elektrodeposisi mempengaruhi efisiensi DSSC. Efisensi tertinggi dihasilkan pada tegangan 1 volt yaitu sebesar 4.43%.
PROSEDUR KERJA GUEST SERVICE ASSISTANCE MONTIGO RESORT NONGSA BATAM Syahputra, Hafizh Wahyuda
journal of residu Vol 3 No 19, Juli (2019): Journal of Residu, 2019.. rc-institut.
Publisher : RC-INSTITUT

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Abstract

This study aims to determine the work procedures for the guest service assistance Montigo Resort Nongsa Batam. This type of research is descriptive research with qualitative methods. Data collection techniques used are through interviews, observation and documentation. The data analysis technique used is qualitative data analysis. From the results of the study found several things related to work procedures at the Montigo Resort Nongsa Batam Guest Service Assistance, namely: the main work of a Guest Service Assistance is often overlooked because it is not only focused on the GSA operational but also helps the operational in Front Office generally.
MOTIVASI PENGUNJUNG BERWISATA KE OBJEK WISATA HOT WATERBOOM SOLOK SELATAN Dinata, Randy Surya
journal of residu Vol 3 No 19, Juli (2019): Journal of Residu, 2019.. rc-institut.
Publisher : RC-INSTITUT

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Abstract

This research originated from the observations of researchers on the motivation of visitors who did not travel optimally. This study aims to determine the motivation of visitors to travel to hot waterboom attractions. This research consists of 2 indicators of visitor motivation, namely: Internal (internal) and External (external). The type of this research is descriptive research with survey methods. The population of this study is visitors who traveled to hot waterboom. The sampling technique is non probability sampling, using incidental sampling. The number of samples in this study amounted to 30 people. Data collection techniques were conducted using a questionnaire (questionnaire) using a Likert scale that had been tested for validity and reliability. The next data was analyzed through descriptive analysis with the assessment categorization method based on the average score and percentage assessment. The results of the study concluded that in general the VISITORS 'MOTIVATION TOURISM TO THE HOT WATERBOOM TOURIST OBJECT SOLOK SOUTH 23.33% of respondents stated very well, 30% of respondents said good, 33.33% of respondents said enough, 3.33% of respondents said the category was not good and 0 % of respondents stated that they were not very good. While based on each indicator, namely: 1) internal indicators (in) as much as 66.66% of respondents stated very well, 13.33% of respondents said good, 10% of respondents said not good, 20% of respondents stated not good, and 3, 33% of respondents stated very bad, 2) external (external) indicators as much as 36.66% of respondents stated very well, 40% of respondents stated well, 10% of respondents stated less well, 6.66% of respondents stated not good, and 6, 66% of respondents said it was very bad.
PENGEMBANGAN MODUL KALKULUS TERINTEGRASI STRATEGI PEMBELAJARAN TWO STAY TWO STRAY BERBANTUAN MEDIA KARTU UNTUK PEMBELAJARAN DI PERGURUAN TINGGI SWASTA KOMPUTER DI KOTA PADANG ulhusna, mishbah
journal of residu Vol 3 No 20, Agustu (2019): Journal of Residu, 2019. Publishet: rc-institut.
Publisher : RC-INSTITUT

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Abstract

This research is motivated by learning that is still teacher-centered. This study aims to produce an integrated module of learning strategies Two Stay Two Stray with card media assisted to increase the participation and activeness of students in learning. This type of research is a development research with an IDI model. The conclusion of this research is at the stage of validity obtaining an average 84,33% with very valid criteria, in the practical stage, get results 79% with practical criteria, and at the effectiveness stage using statistical analysis, namely equations Paired Sample Test with result sig (2.tailed) 0,003 value α 0,05 this means that there are differences in student calculus learning outcomes between before and after being given an integrated strategy module Stay Two Stray.
Elektrodeposisi Fe-TiO2 Pada Berbagai Tegangan dan Aplikasinya pada Dye Sensitized Solar Cell (DSSC) yang Menggunakan Ekstrak Kulit Buah Manggis Terkopigmentasi Sebagai Zat Warna Yunita, Lasmi
journal of residu Vol 3 No 21, Septem (2019): Journal of RESIDU, ISSN PRINT: 2598-814X ISSN ONLINE: 2598-8131
Publisher : RC-INSTITUT

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Abstract

Penelitian ini bertujuan untuk menentukan pengaruh dari elektrodeposisi logam Fe pada lapisan TiO2 terhadap kemampuan absorbsi foton dan efisiensi dari sel DSSC yang menggunakan ekstrak kulit buah manggis terkopigmentasi asam salisilat. Berdasarkan hasil kharakterisasi menggunakan UV-Vis dan FTIR zat warna yang terdapat didalam antosianin adalah senyawa antosianin dengan λmaks 515 nm yang mengalami kenaikan daya absorbansi setelah dikopigmentasi. Variasi elektrodeposisi logam Fe pada TiO2 dilakukan dengan memvariasikan tegangan saat elektroplating yaitu 9V, 12V dan 15V dengan t=10 detik. Efisiensi DSSC yang didapatkan merupakan hasil perhitungan voltase dan kuat arus yang diukur dengan multimeter digital. Hasil konversi dari energi cahaya menjadi energi listrik untuk lapisan tanpa dideposisikan logam Fe adalah 1,223% , sedangkan lapisan yang diseposisikan logam Fe memiliki efisiensi 2,7307% pada tegangan optimum yaitu 9 Volt.
Pengembangan E-Modul Laju Reaksi Berbasis Discovery Learning untuk Kelas XI SMA/MA Lendra, Nova
journal of residu Vol 3 No 19, Juli (2019): Journal of Residu, 2019.. rc-institut.
Publisher : RC-INSTITUT

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Abstract

The learning process in the 2013 curriculum refers to the scientific approach using discovery leanning models. The purpose of this study is to develop e-module based on discovery learning in the reaction rate material for science of class XI SMA/MA and determine the level of validity and practicality of the e-module developed. The type of research conducted is research and development (R&D) with a 4-D development model. The e-module which is carried out is validity test and practicality test. Validity test is carried out by 2 chemistry lecturers at FMIPA UNP, 3 chemistry teachers (chemistry teacher at SMAN 1 Hiliran Gumanti, chemistry teacher at SMAN 1 Payung Sekaki, chemistry teacher at SMAN 1 Danau Kembar). While the practicality test was carried out by 3 chemistry teachers and 19 students for class XI of Science at SMAN 1 Hiliran Gumanti 2018/2019 academic year. The research instrument used was a validity questionnaire and practical questionnaire whose results would be analyzed using the Cohen Kappa formula. This study produces e-module based on discovery learning in the reaction rate material with a mean moment of kappa 0.89 with a very high validity level. The results of the teacher practicality test and the practicality test of the students were obtained by means of sequential kappa moments of 0.90 and 0.87 with a very high degree of practicality.
PENGARUH PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEAD TOGETHER TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS DAN KEMANDIRIAN BELAJAR SISWA KELAS XI IPA MAN KABUPATEN SOLOK Perdana, Dina Novarina
journal of residu Vol 3 No 20, Agustu (2019): Journal of Residu, 2019. Publishet: rc-institut.
Publisher : RC-INSTITUT

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Abstract

This research is motivated by the lack of mathematical problem solving skills and  self regulated learning class XI science student MAN Kabupaten Solok. To overcome this problem use cooperative learning model NHT. The purpose of this study was to determine the effect of the application of cooperative learning model NHT to mathematical problem-solving ability and self regulated learning of class XI science student learning MAN Kabupaten Solok. This research is a quasi experiment. The population in this study were all students of class XI Science MAN Kabupaten Solok. The samples in this study were students of class XI IPA 3 MAN Koto Baru Solok as the experimental class and the students of class XI IPA 2 MAN Koto Baru Solok as the control class. Data were obtained from the results of the initial test and final test capabilities in the form of mathematical problem solving questions and a questionnaire to see students self regulated learning. Data analysis was performed using t-test, t 'and Mann Whitney U test. The results of data analysis indicate that: 1) the ability of problem solving and  self regulated learning matetamtis student learning using cooperative learning model NHT higher than students who are learning using conventional learning 2) mathematical problem solving skills and self regulated learning mathematics students who have a high initial ability learning using cooperative learning model NHT higher than students whose learning using conventional learning 3) mathematical problem solving skills and self regulated learning mathematics students who have low initial learning capability using cooperative learning model NHT higher than students who are learning using conventional learning.
ANALISIS PEMBEDA DIALEK ALAHAN PANJANG NAGARI SUNGAI NANAM KECAMATAN LEMBAH GUMANTI KABUPATEN SOLOK Halid, Elan
journal of residu Vol 3 No 21, Septem (2019): Journal of RESIDU, ISSN PRINT: 2598-814X ISSN ONLINE: 2598-8131
Publisher : RC-INSTITUT

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Abstract

Penelitian ini bertujuan untuk mendeskripsikan analisis bahasa dialek ditinjau dari segi perbedaan fonetik, semantik, onomasiologis, semasiologis, dan morfologis yang ada di daerah Alahan Panjang Nagari Sungai Nanam Kecamatan Lembah Gumanti  Kabupaten Solok. Metode penelitian yang digunakan adalah metode kualitatif dengan pendekatan deskriptif. Data dikumpulkan melalui teknik sadap, teknik simak libat cakap (SLC), dan teknik rekam. Data dalam penelitian ini adalah tuturan masyarakat pembeda dialek ditinjau dari perbedaan fonologis, semantik, onomasiologis, semasiologis, dan morfologis bahasa Minangkabau dialek Kenagarian Sungai Nanam (KSN) dan sumber datanya adalah salah seorang masyarakat yang menetap di daerah Alahan Panjang Nagari Sungai Nanam. Dari temuan data penelitian, peneliti menemukan 84 data, setelah dilakukan perhitungan terdapat adanya data ganda untuk masing-masing pembeda dialek. Jadi, dari keseluruhan data awal ditambahkan  data ganda menjadi 89 data dari lima analisis pembeda dialek. Kelima pembeda dialek tersebut yaitu: (1) perbedaan fonetik  terdapat 3 data, (2) perbedaan semantik terdapat  23 data, (3) perbedaan onomasiologis terdapat 54 data, (4) perbedaan semasiologis terdapat 3 data, (5) perbedaan morfologis terdapat 6 data. Dari kelima pembeda dialek tersebut yang paling banyak ditemukan adalah perbedaan onomasiologis.
ANALISIS PEKERJAAN CONCIERGE DI HOTEL BEST WESTERN PREMIER PANBIL BATAM Sonita, Merly
journal of residu Vol 3 No 19, Juli (2019): Journal of Residu, 2019.. rc-institut.
Publisher : RC-INSTITUT

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Abstract

Penelitian ini bertujuan untuk mengetahui pekerjaan yang dilakukan Concierge di Hotel Best Western Premier Panbil Batam. Jenis  penelitian ini adalah deskriptif dengan data kualitatif. Populasi pada penelitian ini adalah 5 orang staff concierge dan 1 orang supervisor front office. Teknik pengumpulan data adalah dengan metode wawancara, observasi dan dokumentasi. Kemudian data dianalis dengan cara reduksi data, penyajian data, penarikan kesimpulan, dan verifikasi. Dari hasil penelitian ini ditemukan beberapa hal mengenai pekerjaan Concierge di Hotel Best Western Premier Panbil Batam yaitu: pada umumnya concierge bertanggung jawab atas operasional seputar front office, seperti lobby, bar, lounge koridor. Hal ini berbeda di Best Western Premier Panbil Batam sebagai upaya mengatasi masalah complain tamu yaitu concierge bertanggung jawab hanya di corridor dan di lobby, sedangkan tanggung jawab bar dan lounge adalah bagian dari tugas waiter/waitress. Akibatnya tugas concierge lebih efektif dan efisien karena adanya kerja sama antara Front Office Department  dengan waiter/waitress.
PembuatanDye-Sensitized SolarCell (DSSC) menggunakan Kaca GMR sebagai Substrat dan Ekstrak Buah Naga (Hylocereus polyrhizus) sebagaiDye Sensitizer Mafalocty, Vicie
journal of residu Vol 3 No 19, Juli (2019): Journal of Residu, 2019.. rc-institut.
Publisher : RC-INSTITUT

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Abstract

Dye-Sensisited Solar Cell (DSSC) is a photoelectrochemical solar cell that uses light energy for chemical reactions that produce electrical energy. In this study preparations of dye-sensitized solar cell (DSSC) using betalains extract of dragon fruit as natural dyes by varying the concentration of the dyestuff and the immersion time of ZnO electrodes in the dyes of dragon fruit. The results of UV-Vis spectroscopic analysis showed that dragon fruit maceration in methanol : HCl solvents had betalain pigments, where 2 maximum peaks are found, one is around 480 nm and the second is around 530 nm. FTIR spectroscopic analysis shows that the dragon fruit dye has a karbonil group so that the dye can bind well to the surface of ZnO. The results of testing the electrical properties show that the dragon fruit dye has enough LUMO energy level to inject electrons onto the surface of ZnO and has a HOMO energy level that supports the regeneration process of oxidized dye molecules. The results of the conversion of sunlight into electrical energy obtained the efficiency of variations in the concentration of dyes obtained maximum efficiency at 50% concentration of 0.41% and maximum efficiency of immersion time of 1.16% at the time of soaking 5 hours.

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