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Karakterisasi Panjang Gelombang Tanaman Daun Bebele dan Kangkung yang Tumbuh Di Pulau Lombok Sebagai Dye Sensitized Solar Cell (DSSC) Listari, Nening; Agustini, Dwi
Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 1 (2018): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.296 KB)

Abstract

Dye Sensitized solar cells (DSSC) can use two types of coloring, namely dyesderived from organic and inorganic materials. The choice of natural dyes ispreferred by looking at the enormous potential of biodiversity in Indonesia,where there are still many untapped especially for plants that have a tendency tobe colored or contain chromophore dyes such as chlorophyll (play a role in theabsorption of light for photosynthesis). The wavelength when characterizing thedye as a solar cell must be in the visible area (400 to 800nm). In this study thenatural dyes used are bebele leaves and kangkung which grow on the island ofLombok. The wavelength obtained for fresh bebele is 553nm, 605 nm and 665nm.The wavelength obtained for fresh kangkung leaf is 664.5 nm with the highestabsorption peak. From the results of the absorption stated that natural dyes havechlorophyll a and b groups which are absorbed in the UV-Vis region 600nm to700nm which means that they absorb the red most strongly. In the measurementof current strength and efficiency with multimeters on organic dyes in a row thatis fresh bebele leaves5 μA /cm2; 0.156; fresh kangkung leaves 4.2 μA/cm2; 0,131;dried bebele leaves 4 μA/cm2; 0.13; dried kangkung leaf 3 μA /cm2; 0.088.
PENGARUH MODEL PEMBELAJARAN SAINS TEKNOLOGI MASYARAKAT (STM) TERHADAP PENGUASAAN MATERI DAN KETERAMPILAN PEMECAHAN MASALAH SISWA PADA MATA PELAJARAN IPA DI MTs NEGERI PATAS Agustini, Dwi; Subagia, I Wayan; Suardana, I N
Media Pendidikan Matematika Vol 3, No 2 (2015)
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (404.957 KB) | DOI: 10.33394/mpm.v3i2.1833

Abstract

Penelitian ini bertujuan mendeskripsikan dan menganalisis (1) perbedaan penguasaan materi dan keterampilan pemecahan masalah antara siswa yang mengikuti model pembelajaran sains teknologi masyarakat dan siswa yang mengikuti model pembelajaran langsung, (2) perbedaan penguasaan materi antara siswa yang mengikuti model pembelajaran sains teknologi masyarakat dan siswa yang mengikuti model pembelajaran langsung, dan (3) perbedaan keterampilan pemecahan masalah antara siswa yang mengikuti model pembelajaran sains teknologi masyarakat dan siswa yang mengikuti model pembelajaran langsung.Penelitian ini merupakankuasi eksperimen dengan rancangan Pretest-Posttest Nonequivalent Control Group Design. Populasi penelitian ini adalah seluruh siswa kelas VII MTs. Negeri Patas tahun pelajaran 2012/2013 yang berjumlah 146 siswa.Sampel penelitian berjumlah 116 siswayang diambil dengan teknik random kelas. Variabel yang diukur dalam penelitian ini adalah penguasaan materi dan keterampilan pemecahan masalah. Data yang diperoleh dianalisis dengan analisis deskriptif dan analisis MANOVA satu jalur dengan taraf signifikan 5%. Hasil penelitian menunjukkan bahwa (1) terdapat perbedaan penguasaan materi dan keterampilan pemecahan masalah antara siswa yang mengikuti model pembelajaran sains teknologi masyarakat dan model pembelajaran langsung (F=26,940; p<0,05), (2) terdapat perbedaan penguasaan materi antara siswa yang mengikuti model pembelajaran sains teknologi masyarakat dan model pembelajaran langsung (F=45,940; p<0,05), dan (3) terdapat perbedaan keterampilan pemecahan masalah antara siswa yang mengikuti model pembelajaran sains teknologi masyarakat dan model pembelajaran langsung (F=11,262; p<0,05). Berdasarkan hasil penelitian ini dapat direkomendasikan bahwa model pembelajaran sains teknologi masyarakat dapat digunakan sebagai alternatif model pembelajaran untuk meningkatkan penguasaan materi dan keterampilan pemecahan masalah.
PENGARUH REKRUTMEN DAN KOMPETENSI GURU TERHADAP KINERJA GURU (Studi pada Sekolah Dasar Negeri di Kecamatan Cengkareng Jakarta Barat) Agustini, Dwi; Mulyadi, Edi; Dahlan, Jarnawi Afgani
Perspektif : Jurnal Ilmu Administrasi Vol 2 No 2 (2020)
Publisher : UNIVERSITAS ISLAM SYEKH - YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.365 KB) | DOI: 10.33592/perspektif.v2i2.668

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh rekrutmen terhadap kinerja guru. Mengetahui pengaruh kompetensi guruterhadap kinerja guru. Mengetahui pengaruh rerkutmen dan kompetensi guru secara bersama sama terhadap kinerja guru. Penelitian ini menggunakan multiple stage sample. Sampel berukuran 36 responden (kepela sekolah) berasal dari 2 SDN sebagai populasi terjangkau yang diambil dari populasi target berjumlah 80 SDN di Kecamatan Cengkareng Jakarta Barat. Pengumpulan data dilaksanakan dengan penyebaran angket. Analisis data dilakukan dengan metode survey dengan pendekatan kuantitatif teknik regresi dan korelasi. Penelitian ini dilaksanakan dari bulan April sampai dengan Juli 2017. Hasil penelitian menunjukkan: (1)Terjadi pengaruh yang kurang kuat antara rekrutmen dengan kinerja guru. Hal ini dapat dibuktikan dengan memperhatikan nilai r = 0,146. (2)Terjadi pengaruh yang kuat antara kompetensi guru dengan kinerja guru. Hal ini dapat dibuktikan dengan memperhatikan nilai r = 0,405 (3) Terjadi pengaruh yang kuat atara rekrutmen dan kompetensi guru secara bersama sama dengankinerja guru. Hal ini dapat dibutikan dari nilai r = 0,426.Berdasarkan data diatas dapat simpulkan bahwa rekrutmen dan kompetensi guru baik secara sendiri maupun secara bersama-sama memberikan sumbanagan yang berarti terhadap kinerja guru di Seklah Dasar Negeri Cengkareng Jarta Barat.Kata Kunci: Rekrutmen. Kompetensi Guru, dan Kinerja Guru
Pengaruh Suhu dan Konsentrasi Monomer Pada Polimerisasi Asam Tanat Sebagai Zat Warna Terhadap Efisiensi Dye Sensitized Solar Sel Agustini, Dwi; Hardeli, Hardeli
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (23.431 KB) | DOI: 10.24036/p.v8i2.108780

Abstract

Dye Sensitized Solar Cell (DSSC) is a solar cell with a dye as an absorbent of photons from sunlight. Research related to DSSC is still ongoing to find DSSC components that produce high efficiency, but are easy and inexpensive to produce. Polymerization is a combined reaction of several monomers with certain rearrangements. The polymerized monomer is tannic acid which is an organic compound that has about 20 π-π * bonds. The tannic acid produced is then used as a dye in the DSSC circuit. Assembled DSSCs are tested for voltage and resistance using a digital multimeter. The polymerized dyes were characterized using UV-Vis, FTIR. The results of the UV-Vis analysis showed that the batochromic shift occurred in the polymerized dye. The batochromic effect will cause more photons to be converted into electrical energy. The FTIR spectrum is used to confirm the formation of poly-tannic acid. The efficiency of DSSC with polymerized dyes was higher than that of non-polymerized dyes, which was 8.9%
Utilizing Technology to Encourage Marketing Of MSMES Based on Influencer Marketing Through The INNSIGHT Platform Agustini, Dwi; Putri, Valda; Wiranatakusuma, Dimas Bagus
Proceedings of Universitas Muhammadiyah Yogyakarta Graduate Conference Vol. 3 No. 1 (2023): Crafting Innovation for Global Benefit
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/umygrace.v3i1.581

Abstract

This research discusses the use of technology in marketing MSMEs through influencer marketing using the INNSIGHT platform. This study uses an integrative review method to analyze the SWOT literature and a qualitative descriptive analysis to understand the qualitative data. The results of the study show that INNSIGHT can make it easier for MSME players to promote their products through influencer marketing. However, this application also has weaknesses such as dependence on a stable internet network and limited resources. The opportunity that INNSIGHT has is to get a target market that fits the available influencer categories. The threat faced is the use of increasingly sophisticated technology by financial technology service providers. The INNSIGHT application can be downloaded on the Playstore and App-store, and has features such as a homepage, insight posts, chat, customer support team, endorsement packages.
IMPLEMENTASI WEB SCRAPING UNTUK PENGUMPULAN DATA MEDIA SOSIAL LINGKUP PEMERINTAH PROVINSI NTB Hidayati, Lilik; Kusuma, Logananta Puja; Agustini, Dwi; Ardhana, Valian Yoga Pudya
Jurnal Sistem Informasi dan Informatika (Simika) Vol 7 No 1 (2024): Jurnal Sistem Informasi dan Informatika (Simika)
Publisher : Program Studi Sistem Informasi, Universitas Banten Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47080/simika.v7i1.3200

Abstract

The number of internet users in Indonesia has recently increased, currently reaching around 62.1% of the total population. The prevalence of social media use has provided benefits for many stakeholders to be involved in the socialization and promotion of their products and activities. Information regarding the latest government programs and activities is published through the official website of the West Nusa Tenggara Provincial Government and the official pages of each office within the West Nusa Tenggara Provincial Government. The potential of social media needs to be maximized in order to disseminate government programs and activities to the community. Social media offers governments the potential to increase democratic participation by encouraging the public to have a voice in policymaking, working with the public to improve services, gathering ideas, and increasing transparency. This research seeks to apply web scraping techniques to collect data with the aim of monitoring social media performance and identifying factors that are closely related to the level of response elicited by a social media post. The research results show that on average a post on the official page of the West Nusa Tenggara Provincial Government gets around 114.9 likes, 5.1 comments and 11.6 shares. Importantly, one of the important factors that influences the number of likes a post receives is the time it is published. Optimal publication times for the official pages of the West Nusa Tenggara Provincial Government are observed between 06.00-16.00 and 18.00-21.00. By looking closely at social media performance and identifying these influencing factors, social media managers are ready to gain invaluable insights to improve performance by precision and efficacy.
Tinjauan Fatwa MUI Nomor 14 Tahun 2020 Tentang Penyelenggaraan Ibadah Dalam Situasi Terjadinya Wabah Covid-19 Tianto, Aditya Dellis; Agustini, Dwi; Haris, Aidil Fitri; Yumarni, Ani; Rumatiga, Hidayat
Karimah Tauhid Vol. 4 No. 1 (2025): Karimah Tauhid
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/karimahtauhid.v4i1.16438

Abstract

Penelitian ini membahas tentang Fatwa MUI Nomor 14 Tahun 2020, yang fokus pada Penyelenggaraan Ibadah selama Wabah COVID-19 di  Penelitian ini juga menganalisis efektivitas implementasi fatwa tersebut. Jenis penelitian ini terrmasuk pernerlitian hukum ermpiris dan lapangan Pernderkatan yang digunakan adalah kombinasi pernderkatan undang-undang dan konserptual. Sumberr-sumberr yang digunakan merliputi data primerr serperrti wawancara dan obserrvasi, serrta sumberr serkunderr serperrti bahan-bahan hukum primerr dan kaidah-kaidah fiqh berserrta fatwa MUI Nomor 14 Tahun 2020. Terknik perngumpulan datanya merlibatkan wawancara, obserrvasi, dan studi dokumerntasi. Hasil pernerlitian mernunjukkan bahwa Tinjauan fatwa MUI Nomor 14 Tahun 2020 terntang pernyerlernggaraan ibadah serlama wabah COVID-19 di Kota merdan masih berlum erferktif. Ini diserbabkan karerna hasil wawancara mernunjukkan bahwa berberrapa mersjid hanya merndapat perringatan himbauan dari fatwa terrserbut tertapi tidak merlaksanakannya serpernuhnya, mernganggapnya hanya serbagai himbauan berlaka.
Inovasi Nanoagroteknologi untuk Pertanian Berkelanjutan: Mengintegrasikan Smart Technology dengan Praktik Ramah Lingkungan Hasibuan, Molani Paulina; Agustina Nst, Mutiara; Panda, Florentina Maria; Agustini, Dwi
International Journal of Science, Technology and Applications Vol 2 No 1 (2024): Volume 2 Number 1 Tahun 2024
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v2i1.223

Abstract

Global climate change and rapid population growth have created significant challenges to food security. To overcome these challenges, innovative technologies are needed that are capable of increasing agricultural yields in a sustainable manner. This research aims to explore the concept of Nanoagrotechnology as a smart technology that has the potential to increase agricultural productivity and efficiency while maintaining environmental sustainability. Nanoagrotechnology integrates nanotechnology applications in crop production and protection, such as the use of nano-fertilisers, nanopesticides, nanobiosensors, and nano-based technologies for remediation of contaminated soil. This research method uses a literature review approach by analysing various study results related to the application of nanotechnology in the agricultural sector. The results of the analysis show that nanotechnology is able to increase the efficiency of resource use, reduce negative environmental impacts, and produce crops with better quality and quantity. Nanoagrotechnology is thus a potential solution to the challenges of modern agriculture and contributes to global food security.
Phytoremediation of Lead Heavy Metals in the Mangrove Ecosystem of the Lembar Harbor Area, West Lombok Regency, Indonesia Rahman/Firman, Firman Ali; Ihsan, Muhammad Shohibul; Agustini, Dwi; Jayanti, Ervina Titi
Makara Journal of Science Vol. 29, No. 2
Publisher : UI Scholars Hub

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

Abstract

Mangroves play a vital role as bioindicator plants in port areas with the potential for non-essential heavy metal contamination. This study aimed to determine the potential for phytoremediation of lead heavy metal in mangrove vegetation resulting from port operations. The research was conducted in the mangrove ecosystem of Lembar Harbor, West Lombok Regency, West Nusa Tenggara, Indonesia. Substrate, leaf, and root samples were collected using a purposive random sampling technique and analysis for testing the lead heavy metal content using atomic absorption spectrophotometry. The results showed that the average heavy metal content of lead accumulated in the substrate in each mangrove stand (14.35 ± 2.711 ppm) was higher than the average heavy metal content in the roots (5.48 ± 2.300 ppm) and leaves (3.55 ± 1.623 ppm). Further analysis showed that nine out of 10 mangrove species act as a phytostabilizer against the lead heavy metal with an average translocation factor of no more than one (0.59 ± 0.176). Only Rhizophora stylosa showed the ability for phytoextraction with a translocation factor more than one (1.488). All types of mangroves in the Lembar Harbor area had a bioconcentration factor lower than one, with an average leaf bioconcentration factor of 0.25 ± 0.115 ppm and a root bioconcentration factor of 0.39 ± 0.161 ppm. The ecological function of the mangroves in Lembar Harbor is more specifically an excluder plant for lead heavy metal bioaccumulation with a biological concentration factor (BCF) < 1 and phytoremediation (FTD) < 1, which can be affected by the low accumulated BCF of leaves and roots.
Pelatihan Aplikasi Google Drive Sebagai Media Penyimpanan dan Kolaborasi Untuk Siswa SMAN 1 Batulayar Fauzi, Andri Azmul; Ridwan, Lalu Muhammad; Agustini, Dwi; Hidayati, Lilik; Inayati, Rizqa; Tumilaar, Rinancy; Satriyantara, Rio; Utama, Alfian Eka; Fauzi, Muhammad Hilmi; Dewi, Irma Risvana; Ripai, Ripai; Irawan, Adi; Irawan, Ade; Rohmah, Zulfiani
Journal of Research Applications in Community Service Vol. 3 No. 2 (2024): Journal of Research Applications in Community Service
Publisher : Universitas Nahdlatul Ulama Sunan Giri Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32665/jarcoms.v3i2.2988

Abstract

Pengabdian ini bertujuan untuk memberikan pelatihan penggunaan aplikasi google drive sebagai media penyimpanan pada kegiatan pembelajaran pada siswa-siswi SMAN 1 Batulayar Lombok Barat. Kegiatan ini diharapkan dapat memberikan pemahaman kepada mereka tentang bagaimana cara penggunaan google drive sebagai media penyimpanan serta dapat memahami berbagai fitur-fitur yang ada pada aplikasi ini sehingga bisa dimanfaatkan pada kegiatan pembelajaran.  Dengan menggunakan google drive, siswa dapat menyimpan file-file penting seperti tugas, makalah, presentasi, dan dokumen lainnya dengan slot gacor 777 aman di cloud. Selain itu, fitur kolaborasi dalam google drive memungkinkan siswa untuk bekerja sama secara real-time pada proyek kelompok atau berbagi dokumen dengan guru. Metode yang digunakan pada pelatihan ini adalah metode ceramah, tanya jawab dan simulasi. Dengan adanya pelatihan ini, mampu meningkatkan pemahaman siswa mengenai pentingnya aplikasi google drivesebagai media penyimpanan pada proses pembelajaran. Selain itu, dengan adanya pelatihan ini, memberikan pemahaman kepada para siswa tentang pentingnya menguasai teknologi pada zaman sekarang ini.