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All Journal REKAYASA J-MAS (Jurnal Manajemen dan Sains) Jurnal Ilmu Kelautan Kepulauan Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Unistek: Jurnal Pendidikan dan Aplikasi Industri Jurnal Teknologi Lingkungan Lahan Basah Edukasia: Jurnal Pendidikan dan Pembelajaran Journal of Business Management and Economic Development
Marcelina Marcelina, Marcelina
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Status Mutu Air pada Lahan Gambut di Sungai Putat Kota Pontianak Kalimantan Barat Fitria, Laili; Desmaiani, Herda; Marcelina, Marcelina; Syafrianto, Muhammad Khalid; Khairi, Syahrul
Rekayasa Vol 13, No 1: April 2020
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (458.452 KB) | DOI: 10.21107/rekayasa.v13i1.5920

Abstract

Keberadaan sungai sebagai air permukaan sangat diperlukan bagi kelangsungan kehidupan manusia, antara lain sebagai air baku minum, air baku irigasi pertanian, peternakan, pembangkit listrik, rekreasi, dan sebagainya. Diketahui juga bahwa PDAM Tirta Khatulistiwa Kota Pontianak belum melayani seluruh penduduk Kota Pontianak. Sehingga masih ada masyarakat yang memenuhi keperluan air bersih menggunakan air sungai/parit yang ada di Kota Pontianak. Di Sungai Putat yang termasuk kawasan gambut, masyarakat masih menggunakan air sungai tersebut sebagai sumber air bersih. Kualitas perairan sungai merupakan suatu cara yang dapat menduga dan mengevaluasi adanya perubahan lingkungan. Tujuan penelitian ini adalah mengetahui status mutu air pada lahan gambut, tepatnya di Sungai Putat. Standar status mutu air yang digunakan adalah air kelas II berdasarkan PP 82 tahun 2001. Pengambilan sample air menggunakan purposive sampling di 3 titik pada Sungai Putat. Analisis status mutu menggunakan metode STORET. Diketahui bahwa status mutu Sungai Putat Kota Pontianak tercemar sedang. Sehingga dibutuhkan pengendalian pencemaran air terhadap Sungai Putat.
Investigasi Energi Termal pada Mesin Diesel Tipe SULZER ZAV 40S dengan Bahan Bakar Marine Fuel Oil (MFO) Marcelina, Marcelina; Khairi, Syahrul; Kurniawan, Eddy; P Yolanda, Kristina Desideria
UNISTEK Vol 8 No 2 (2021): Agustus 2021 - Januari 2022
Publisher : UNIVERSITAS ISLAM SYEKH - YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/unistek.v8i2.1383

Abstract

The study of thermal energy produced by the Sulzer ZAV 40S diesel engine using Marine Fuel Oil (MFO) can affect the engine combustion process because of the change in fuel chemical energy into internal work. The heat energy generated in the diesel engine where the ignition process when the piston approaches the dead point is then followed by the presence of fuel, namely MFO. The fuel will be sprayed through the nozzles into the combustion chamber. This will result in a complete combustion process where the composition of the mass of air and fuel in the cylinder will generate heat due to the high temperature. The results of the calculation that the need for fuel and air to produce the energy value (Q) of this diesel engine is 808.33 Kcal and the power (Ni) is 4,602.09 PK in every second while the mass of MGO is 5 Kg and air is 130 Kg in every minutes for continuous rotation of 500 rpm.
OPTIMALISASI POTENSI SUMBER DAYA DESA SUNGAI ITIK, KUBU RAYA, KALIMANTAN BARAT Maleiva, Lalak Tarbiyatun Nasyin; Marcelina, Marcelina; Gani, Usman A; Khairi, Syahrul; Kurniawan, Eddy
Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Vol 9 No 1 (2022): Januari
Publisher : Lembaga Penelitian, Penerbitan dan Pengabdian Masyarakat (LP3M) UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/ppkm.v9i1.2210

Abstract

Desa Sungai Itik memiliki banyak pontensi untuk meningkatkan perekonomian di masyakatnya. Beberapa potensi yang dimiliki desa ini di antaranya UMKM (amplang), industri kecil (gula semut), peternakan (ikan nila), perkebunan (kelapa dan pisang), dan pertanian (padi). Potensi-potensi ini telah dioperasikan namun dalam proses pelaksanaannya masih terdapat kendala-kendala sehingga membuat para pelaku usaha kurang termotivasi untuk berwirausaha. Adapun kegiatan-kegiatan yang telah dilakukan untuk mengatasi kendala ini di antaranya sosialisasi mengenai manajemen usaha, pelatihan pembuatan pakan ikan nila dan pupuk dari limbah pertanian, serta sosialisasi manajemen usaha dan diskusi untuk memberikan motivasi dan pengaruh positif kepada warga desa sehingga para pelaku usaha dapat menguasai strategi dan metode untuk menghasilkan profit yang lebih besar dari usahanya. Adapun dampak positif lainnya adalah menciptakan masyarakat yang eko-kreatif sehingga dapat menurunkan tingkat pengangguran dan meningkatkan kesejahteraan masyarakat Desa Sungai Itik.
The Influence of Product Quality, Product Design, and Brand Image on Purchase Decisions for Viva Cosmetic Products in Batam Marcelina, Marcelina; Saputra, Asron
J-MAS (Jurnal Manajemen dan Sains) Vol 9, No 1 (2024): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jmas.v9i1.1687

Abstract

In today's advanced era, many from various circles, especially among young people who are currently very concerned about their appearance to look neat, and attractive, especially for women whose lives are related to beauty and beauty in themselves. The business world in the beauty sector is experiencing a fairly rapid increase, as a result of the high number of purchases in the world of beauty, all companies in the beauty sector are competing to create attractive products and have the attractiveness to be able to encourage consumers to purchase these products.
Pengukuran Garis Sempadan Pantai Berbasis ArcGIS Melalui Pemetaan Pengendalian Kawasan Pesisir Di Kota Singkawang Meirany, Jasisca; Marcelina, Marcelina; Lestari, Arfena Deah; Taufiqurrahman, Muhammad
Jurnal Teknologi Lingkungan Lahan Basah Vol 12, No 4 (2024): Oktober 2024
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v12i4.86666

Abstract

Kota Singkawang merupakan kawasan pesisir dengan panjang garis pantai sepanjang 27,6 km. Salah satu kebijakan yang  perlu diimplementasikan dalam pengelolaan kawasan pantai adalah menetapkan garis sempadan pantai untuk menjaga zona aman antara infrastruktur dengan garis pantai yang selalu berubah.   Penerapan GIS diperlukan dalam pengukuran garis sempadan pantai, merumuskan kebijakan dalam melindungi ekosistem pesisir dan mengurangi risiko bencana pesisir. Metodelogi ini menggunakan perhitungan coastal hazard zone (CHZ), lebar sempadan, variasi tahunan zona yang mengalami erosi, serta pengukuran profil pantai. Hasil dari analisis ini terdapat   tipe profil pantai berlumpur, pantai dengan kawasan hutan mangrove dan pantai pasir sedikit kerikil dengan jarak pada kondisi eksisting 100 m dari bibir pantai. Nilai ketinggian muka air laut untuk pantai kerikil 2 m dan pantai berlumpur 12 m, lebar garis sempadan pantai berkisar 159,2 m   untuk pantai pasir berkerikil, pantai pesisir manggrove 121,5 m dan berlumpur 125,5 m. Ketentuan Perpres No. 51 Tahun 2016 tentang penetapan garis sempadan pantai, divalidasi dengan perhitungan kondisi pantai Kota Singkawang. Sehingga dapat dibuat   penetapan batas sempadan melalui peraturan tertulis sebagai bentuk pengendalian pemanfaatan ruang pesisir agar tidak mengalami perubahan garis pantai.
Exploration of Muslim Guests' Preferences and Expectations towards Muslim-Friendly Hotel Facilities and Services at Horison Aziza Solo Marcelina, Marcelina; Palupiningtyas, Dyah
Journal of Business Management and Economic Development Том 3 № 01 (2025): January 2025
Publisher : PT. Riset Press International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59653/jbmed.v3i01.1450

Abstract

This study aims to explore Muslim guests' preferences and expectations regarding Muslim-friendly hotel facilities and services at Horison Aziza Solo. Utilizing a qualitative approach, the research involved 25 Muslim guest participants selected through purposive sampling. Data were collected through semi-structured interviews and direct observations, then analyzed using thematic analysis. The findings indicate that the availability of halal food and worship facilities are the primary preferences, with importance levels of 100% and 95%, respectively. The largest gap was identified in the aspect of separating facilities based on gender (15%), while staff services exhibited the smallest gap. Horison Aziza Solo has demonstrated strong performance in implementing the Muslim-friendly hotel concept, with key strengths in its strategic location and management commitment. However, there is still a need for improvement in service consistency and facility optimization. This study contributes theoretically to the development of halal tourism literature and offers practical implications for the management of Muslim-friendly hotels in Indonesia.
Analisa Perubahan Garis Pantai di Kabupaten Kubu Raya Provinsi Kalimantan Barat Lestari, Arfena Deah; Meirany, Jasisca; Marcelina, Marcelina; Rustamadji, Rustamadji
Jurnal Ilmu Kelautan Kepulauan Vol 7, No 1 (2024): Jurnal Ilmu Kelautan Kepulauan
Publisher : Fakultas Perikanan dan Kelautan. Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jikk.v7i1.8341

Abstract

Improving Students’ Writing Ability in Procedure Text Through Make-A-Match Technique at Ninth Grade of SMPN Satu Atap 1 Jabiren Raya Marcelina, Marcelina; Sabarun, Sabarun; Mirza, Akhmad Ali
EDUKASIA Jurnal Pendidikan dan Pembelajaran Vol. 4 No. 2 (2023): Edukasia: Jurnal Pendidikan dan Pembelajaran
Publisher : LP. Ma'arif Janggan Magetan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62775/edukasia.v4i2.577

Abstract

The study's aims are to examine the improvement of process text writing ability with Make-a-Match technique and to discover the benefits and drawbacks of using Make-a-Match technique in increasing procedure text writing ability at SMPN Satu Atap 1 Jabiren Raya's Ninth Grade. Twenty students participated in the study. The study's instruments included interview questions, an observation list, a pre-test, and two post-tests. This was an action research study. The study was completed in two rounds. There were four steps in each cycle: planning, implementation, observation, and reflection. The findings demonstrated that students' learning outcomes increased after using the Make-a-Match type cooperative learning approach. The average score in the first cycle test was 54.55, with a post-test score of 70.95, and an average score of 84.45 in the second cycle. In cycle I, 35% of students met the target, while in cycle II, 90% of post-test I and II findings showed an improvement in student learning outcomes.
Co-Authors Akhmad Ali Mirza, Akhmad Ali Desmaiani, Herda Eddy Kurniawan Fitria, Laili Lalak Tarbiyatun Nasyin Maleiva Lestari, Arfena Deah Meirany, Jasisca Muhammad Taufiqurrahman, Muhammad P Yolanda, Kristina Desideria Rustamadji Rustamadji, Rustamadji Sabarun Saputra, Asron Syafrianto, M Khalid Syahrul Khairi Usman A. Gani