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PENGARUH PENAMBAHAN KITOSAN TERHADAP EFEKTIVITAS PROSES KOAGULASI MENGGUNAKAN BESI (III) KLORIDA HEKSAHIDRAT Junisu, Belda Amelia; Handayani, Evi; Hidayati, AS Dwi Saptati Nur; Ismuyanto, Bambang; Himma, Nurul Faiqotul
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 2 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Air gambut merupakan sumber air potensial yang dapat digunakan sebagai air bersih jika diolah terlebih dahulu, dimana penyisihan asam humat menjadi perhatian utama karena kandungannya yang tinggi menyebabkan kekeruhan, intensitas warna yang tinggi, dan sifat asam pada air gambut. Salah satu metode yang dapat digunakan untuk penyisihan asam humat dalam air gambut adalah koagulasi dengan menggunakansenyawa kimia berupa garam logam hidrolisis sebagai koagulan. Pada penelitian ini, Besi (III) Klorida (FeCl3.6H2O) digunakan sebagai koagulan untuk penyisihan asam humat.Penentuan kondisi optimum koagulasi dilakukan dengan variasi pH (6â€“9) dan dosis koagulan FeCl3.6H2O (20â€“100 ppm). Koagulasi kemudian dilakukan dengan penambahan kitosan sebagai koagulan pendukung untuk meningkatkan efektivitas proses koagulasi, dimana dosis kitosan divariasikan pada rentang 10â€“50 ppm.Diperoleh nilai pH optimum adalah pH 7 dan dosis FeCl3.6H2O sebesar 80 ppm dengan penurunan warna sebesar 88,08% dan kekeruhan sebesar 97,08%. Sedangkan dengan adanya penambahan kitosan hingga 50 ppm, penurunan warna dan kekeruhansemakin meningkat hingga Â 94,75% dan 99,07%.

Desain dan Analisis Pengaruh Penggunaan Variasi Bentuk Ballast untuk Meningkatkan Performa pada Navigation Buoy Handayani, Evi; Adietya, Berlian Arswendo; Amiruddin, Wilma
Jurnal Teknik Perkapalan Vol 8, No 3 (2020): Juli
Publisher : Diponegoro University

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Navigation Buoy atau pelampung adalah struktur yang melayang di permukaan laut sebagai alat petunjuk tentang adanya keberadaan terumbu karang, laut dangkal serta menunjukkan arah rute laut untuk kapal selama berlayar. Berkaitan dengan system operasinya, performa stabilitas dari Navigation Buoy perlu diperhatikan Penelitian ini bertujuan untuk mengetahui nilai stability dan analisa perbedaanÂ biaya produksi pada navigation buoy sesudah di desain ulang. Perlakuan yang di berikan adalah penggunaan variasi bentuk ballast dan material ballast. Hasil perhitungan stabilitas nilai GZ max terdapat padaÂ variasi ballast persegi dengan material steel memiliki sudut 85,9 derajat sebesar 4,566 m dengan luas area senilai 4,796 m.deg. Pada penelitian ini, dapat disimpulkan variasi ballast persegi dengan material steel Â memiliki hasil stabilitas yang lebih baik karena menghasilkan performa yang lebih baik.Â

Analysis of Science Process Skills for Grade 5 Elementary School Students on Science Materials during the Covid-19 Pandemic: Analisis Keterampilan Proses Sains Siswa Kelas 5 Sekolah Dasar pada Materi IPA dimasa Pandemi Covid-19 Handayani, Evi; Setyawati, Enik
Indonesian Journal of Education Methods Development Vol. 17 No. 1 (2022): February
Publisher : Universitas Muhammadiyah Sidoarjo

The purpose of this study was to analyze the science process skills of grade 5 SDN Karangpuri 1 students based on the high, medium and low abilities of students in the science of animal movement organs during the covid-19 pandemic. This research method uses a descriptive qualitative approach. Data collection techniques using tests, interviews and documentation. The research was carried out at SDN Karangpuri 1 for 5th grade students. The subjects of this study were 3 students representing high, medium and low ability students. The results of data analysis show that, in online learning, the three students who represent the categories of high, medium and low ability students have science process skills in themselves, but need to be improved again because there are several aspects of science process skills that students lack. Keywords: Process Skills Science; Science Learning, Covid-19 Pandemic

Factors Affecting Seaweed (Eucheuma cottoni) Production in Banten Province (Case in Lontar Village) Handayani, Evi; Daris, Edmon; Ichdayati, Lilis Imamah
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.7425

Seaweed is one of the plants that has a lot of potential as a functional food ingredient, active ingredient of drug preparation and even cosmetics that are quite natural in producing various pharmacological activities both as a source of antioxidants, antibacterials, antimicrobials and anticancer. Seaweed is currently a potential asset for areas that are able to produce it to meet the increasing market needs. Lontar Village, located in Banten Province, is one of the main seed producing areas. However, seed production factors are one of the main indicators that need to be used as a standard in this study, such as the length of the rope span, age characteristics, education characteristics, characteristics of the seed farmer's business experience. This type of research is quantitative and data is obtained primarily and secondarily. The data obtained were analyzed using the SPSS 26 program. The results of the study showed that the factors that influence seaweed production in Banten Province, especially Lontar Village, are influenced by the length of the rope span, age characteristics, education characteristics, characteristics of the seaweed farmer's business experience. The conclusion is that seaweed production is influenced by various characteristics, namely age, education, and seaweed farming experience.

APLIKASI BOOK CREATOR: PENGARUHNYA TERHADAP KEMAMPUAN MAHASISWA MENULIS TEKS PROSEDUR Syamsiah, Nur; Handayani, Evi; Puspita, Nurul
DIALEKTIKA: Jurnal Ilmiah Pendidikan Bahasa, Sastra, dan Matematika Vol 9 No 2 (2023): DIALEKTIKA: Jurnal Ilmiah Pendidikan Bahasa, Sastra, dan Matematika
Publisher : FKIP, Universitas Lakidende Unaaha

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This study investigates the influence of employing the Book Creator application on the development of students' writing abilities in composing procedural texts. Mastering the construction of procedural texts is a crucial skill for students, and Book Creator offers a potentially valuable tool to facilitate the clear and creative expression of their ideas. Employing a quasi-experimental design, this research examines the effect of Book Creator on the writing skills of eleventh-grade students at SMA N 1 Pasir Sakti. The target population comprised 302 students, from which two classes were selected through cluster random sampling: XI IPA 3 as the experimental group and XI IPS 3 as the control group, each consisting of 30 students. Pre-tests and post-tests served as the primary data collection instruments. Subsequent to normality and homogeneity testing of the data through SPSS v.24, an independent samples t-test was conducted. The results, with a significance level (p) of 0.003 (falling below the 0.05 alpha level), indicate that the utilization of the Book Creator application exerted a statistically significant influence on the enhancement of students' writing ability in procedural texts within SMAN 1 Pasir Sakti during the 2021/2022 academic year.

Sistem Layanan Sirkulasi di Perpustakaan Sekolah Pascasarjana Universitas Negeri Padang Fitri, Mulia; Yori, Audia Nazareth; Asmara, Rini; Handayani, Evi
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Sistem layanan sirkulasi di Perpustakaan Sekolah Pascasarjana Universitas Negeri Padang merupakan salah satu elemen penting dalam mendukung aktivitas akademik mahasiswa dan dosen. Layanan ini mencakup peminjaman, pengembalian, perpanjangan, dan pemesanan koleksi perpustakaan. Penelitian ini bertujuan untuk menganalisis efektivitas dan efisiensi sistem layanan sirkulasi yang diterapkan serta mengidentifikasi kendala yang dihadapi pengguna dan petugas perpustakaan. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan teknik pengumpulan data melalui observasi, wawancara, dan studi dokumentasi. Hasil penelitian menunjukkan bahwa sistem layanan sirkulasi sudah berjalan dengan baik berkat penerapan teknologi informasi dalam pengelolaan perpustakaan, seperti penggunaan sistem otomasi berbasis Integrated Library System (ILS). Namun, masih terdapat beberapa kendala, seperti keterbatasan jumlah koleksi yang relevan, seringnya terjadi keterlambatan pengembalian buku, dan kurangnya sosialisasi terhadap prosedur layanan sirkulasi kepada pengguna. Solusi yang diusulkan meliputi penambahan koleksi bahan pustaka, peningkatan layanan digital, serta penyuluhan rutin mengenai kebijakan peminjaman. Dengan perbaikan sistem layanan sirkulasi ini, diharapkan dapat meningkatkan kepuasan pengguna dan mendukung kegiatan akademik yang lebih optimal di Sekolah Pascasarjana Universitas Negeri Padang.

INFLUENCE OF PLANNING, IMPLEMENTATION AND SUPERVISION TO CUSTOMER SATISFACTION THROUGH QUALITY TANJUNG GELAM PORT SERVICES KARIMUN DISTRICT Handayani, Evi; Indrayani, Indrayani; Khaddafi, Muammar; Wibisono, Chablulah
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 1 No. 12 (2022): NOVEMBER
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v1i12.83

This research was conducted by distributing 290 questionnaires. Discussion of the results of field studies to obtain data on answers to questionnaires that measure five main variables in this study, namely Planning, Implementation, Monitoring, Customer Satisfaction and Service Quality. The results of the analysis and discussion using the SEM-PLS (Structural Equition Modeling-Partial Least Square) method using the R-Square test and hypothesis testing, namely direct and indirect effects. The path coefficient calculation in this study is assisted by Smart PLS Ver 3.0. to determine the direct and indirect effect between variables. Planning (X1) has a significant positive effect on Service Quality (Z), with a t-statistics value of 2.660 > 1.96 and a p-value of 0.008 < 0.05, the hypothesis is accepted. Implementation (X2) has a significant positive effect on Service Quality (Z), with a t-statistics value of 2.415 > 1.96 and a p-value of 0.016 < 0.05, the hypothesis is accepted. Supervision (X3) has a significant positive effect on Service Quality (Z), with a t-statistics value of 2.715 > 1.96 and a p-value of 0.000 < 0.05, the hypothesis is accepted. Service Quality (Z) has a significant positive effect on Customer Satisfaction (Y), with a t-statistics value of 2.218 > 1.96 and a p-value of 0.020 < 0.05, the hypothesis is accepted. Planning (X1) has a significant positive effect on Customer Satisfaction (Y), with a t-statistics value of 2.657 > 1.96 and a p-value of 0.012 < 0.05, the hypothesis is accepted. Implementation (X2) has a significant positive effect on Customer Satisfaction (Y), with a t-statistics value of 2.036 > 1, 96 and the p-value is 0.002 <0.05, the hypothesis is accepted. Monitoring (X3) has a significant positive effect on customer satisfaction (Y), with t-statistics 2.183 > 1.96 and a p-value of 0.000 <0.05, the hypothesis is accepted.

ORGANIZATIONAL INNOVATION IN MEDIATING TRANSFORMATIONAL LEADERSHIP TO ORGANIZATIONAL PERFORMANCE Handayani, Evi; Syawaludin, Syawaludin; Yuslinda, Yuslinda; Herlambang, Wira
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 2 No. 2 (2022): April
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v2i2.181

This research aims to see the effect of transformational leadership on the performance of the organization in the office of the Border Management Department of the Regional Secretariat of Karimun Regency mediated by Inovasi. This study is a quantitative study that uses a sample of 60 respondents. Data analysis using Structural Equation Modeling (SEM) analysis with Smart PLS 2.0 software. The results showed that: (1) Innovation has a positive and significant effect on the performance of the organization in the office of the Border Management Department of the Regional Secretariat of Karimun Regency, seen from the value of t values 2,589 greater than the standard set at 1.96, (2) Transformational Leadership has a positive and significant effect on Innovation in the office of the Border Management Department of the Regional Secretariat of Karimun Regency with a value of t values of 38,004, (3) Transformational Leadership has a positive and significant effect on the performance of the organization in the Office of Border Management Section of the Regional Secretariat of Karimun Regency with t values of 13,525, (4) Transformational leadership has a positive and significant effect on the performance of the organization in the office of the Border Management Department of the Regional Secretariat of Karimun District mediated by Innovation with a value of t values of 40,493

ORGANIZATIONAL INNOVATION IN MEDIATING TRANSFORMATIONAL LEADERSHIP TO ORGANIZATIONAL PERFORMANCE Handayani, Evi; Syawaludin, Syawaludin; Yuslinda, Yuslinda; Herlambang, Wira
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 2 No. 3 (2022): June
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v2i3.259

This research aims to see the effect of transformational leadership on the performance of the organization in the office of the Border Management Department of the Regional Secretariat of Karimun Regency mediated by Inovasi. This study is a quantitative study that uses a sample of 60 respondents. Data analysis using Structural Equation Modeling (SEM) analysis with Smart PLS 2.0 software. The results showed that: (1) Innovation has a positive and significant effect on the performance of the organization in the office of the Border Management Department of the Regional Secretariat of Karimun Regency, seen from the value of t values 2,589 greater than the standard set at 1.96, (2) Transformational Leadership has a positive and significant effect on Innovation in the office of the Border Management Department of the Regional Secretariat of Karimun Regency with a value of t values of 38,004, (3) Transformational Leadership has a positive and significant effect on the performance of the organization in the Office of Border Management Section of the Regional Secretariat of Karimun Regency with t values of 13,525, (4) Transformational leadership has a positive and significant effect on the performance of the organization in the office of the Border Management Department of the Regional Secretariat of Karimun District mediated by Innovation with a value of t values of 40,493.

Analysis of Science Process Skills for Grade 5 Elementary School Students on Science Materials during the Covid-19 Pandemic: Analisis Keterampilan Proses Sains Siswa Kelas 5 Sekolah Dasar pada Materi IPA dimasa Pandemi Covid-19 Handayani, Evi; Setyawati, Enik
Indonesian Journal of Education Methods Development Vol. 17 No. 1 (2022): February
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijemd.v17i.632

The purpose of this study was to analyze the science process skills of grade 5 SDN Karangpuri 1 students based on the high, medium and low abilities of students in the science of animal movement organs during the covid-19 pandemic. This research method uses a descriptive qualitative approach. Data collection techniques using tests, interviews and documentation. The research was carried out at SDN Karangpuri 1 for 5th grade students. The subjects of this study were 3 students representing high, medium and low ability students. The results of data analysis show that, in online learning, the three students who represent the categories of high, medium and low ability students have science process skills in themselves, but need to be improved again because there are several aspects of science process skills that students lack. Keywords: Process Skills Science; Science Learning, Covid-19 Pandemic

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