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All Journal Management of Aquatic Resources Journal (Maquares) Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Journal of Aquatropica Asia Forum Geografi JURNAL ENGGANO Jurnal Laut Khatulistiwa SAINTEK: Jurnal ilmiah Sains dan Teknologi Industri INTERNATIONAL JOURNAL OF EDUCATION, INFORMATION TECHNOLOGY, AND OTHERS ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua ALAYYA: Jurnal Pendidikan Islam Anak Usia Dini Kultura: Jurnal Ilmu Sosial dan Humaniora Jurnal Perikanan

DEWI PURNAMA

Marine Science Study Program, University Of Bengkulu

Author-ID : 349069

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Neuroscience Physics Social Sciences Other

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Analisis Simulasi Antrian Teller Untuk Meminimasi Waktu Tunggu (Studi Kasus: BCA KCP Ruko Rajawali Palembang) Purnama, Dewi; Alfian, Achmad
SAINTEK: Jurnal Sains dan Teknologi Industri Vol 2 No 1 (2018): Saintek: Jurnal Ilmiah Sains dan Teknologi Industri
Publisher : Universitas katolik Musi Charitas

Antrian merupakan sebuah bagian penting dalam manajemen operasi. Antrian terdapat pada sektor manufaktur ataupun sektor jasa. Antrian adalah orang-orang atau barang dalam barisan yang sedang menunggu untuk dilayani dan kemudian meninggalkan barisan setelah dilayani. Penelitian ini menyajikan hasil dari pemodelan dengan simulasi, menganalisis sistem antrian untuk meminimasi waktu tunggu pada teller BCA KCP Ruko Rajawali Palembang. Untuk mencapai sasaran yang dimaksud langkah-langkah yang dilakukan adalah merencanakan penelitian dengan baik, menggambarkan sistem lebih detil untuk dipelajari, membangun model konseptual dan model simulasi, mensimulasikan model yang dibentuk, menganalisa keluaran dan menyimpulkannya. Waktu tunggu paling sedikit 2 detik hingga 1 jam dan rata-rata 16 menit 28 detik serta panjang antrian 1 sampai 20 orang. Hasil tersebut menunjukkan performansi teller belum baik karena waktu menunggu lama. Kapasitas teller akan lebih efektif bila menambah satu orang teller agar waktu menunggu lebih cepat dari sebelumnya. Dengan sistem antrian yang diusulkan, sehingga 5 teller dari sebelumnya 4 teller, memiliki rata-rata waktu menunggu menjadi 12 menit 36 detik

Refining Suitability Modelling for Sea Cucumber (Holothuria scabra) Using Fully Raster-Based Data Sulistyo, Bambang; Purnama, Dewi; Anggraini, Maya; Hartono, Dede; Wilopo, Mukti Dono; Wulandari, Ully; Listyaningrum, Noviyanti
Forum Geografi Vol 32, No 2 (2018): December 2018
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v32i2.6662

Geographical Information System (GIS) modelling using vector data is a commonly used method of modelling offering simple data input and analysis. However, the vector-data model assumes homogeneity in mapping units based on subjectively applied classification and simplification, and this may lead to over-simplification and consequent reduction in the variety of information obtained and uncertainty in results. This research aimed at refining the suitability modelling for sea cucumber (Holothuria scabra) using fully raster-based data for the waters of Kiowa Bay, Kahyapu village in the district of Enggano, North Bengkulu, Indonesia. Using a GIS, all parameters affecting suitability for sea cucumber were rasterised to improve compatibility. The relevant data includes nine parameters of sea water namely acidity, depth, current velocity, temperature, salinity, brightness, dissolved oxygen concentration, condition of the sea floor, and coastal protection of the area. These parameters were surveyed in the field at 51 stations and each parameter was then digitized and interpolated (using Kriging method) to create a continuous raster-dataset. Correlation analysis was then conducted to check parameter correlation. Parameters with a correlation coefficient of > 0.75 were excluded from further analysis since results could be derived from the remaining parameter set. Principal component analysis (PCA) was then applied to ascertain the weight of each component. Furthermore, scree plotting was employed to choose which principal components were relevant for insertion into the formula of suitability. The final result was then compared to the map of suitability from the analysis of vector-based data as the reference data set. The research results showed that this method can be used to locate areas that are suitable for sea cucumber farming. The suitability map for sea cucumber generated from the analysis using fully raster-based data displayed less uncertainty than the suitability map generated using vector-based data.

Analisis Simulasi Antrian Teller Untuk Meminimasi Waktu Tunggu (Studi Kasus: BCA KCP Ruko Rajawali Palembang) Alfian, Achmad; Purnama, Dewi
SAINTEK: Jurnal Sains dan Teknologi Industri Vol 2 No 1 (2018): Saintek: Jurnal Ilmiah Sains dan Teknologi Industri
Publisher : Universitas katolik Musi Charitas

Refining Suitability Modelling for Sea Cucumber (Holothuria scabra) Using Fully Raster-Based Data Bambang Sulistyo; Dewi Purnama; Maya Anggraini; Dede Hartono; Mukti Dono Wilopo; Ully Wulandari; Noviyanti Listyaningrum
Forum Geografi Vol 32, No 2 (2018): December 2018
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v32i2.6662

Geographical Information System (GIS) modelling using vector data is a commonly used method of modelling offering simple data input and analysis. However, the vector-data model assumes homogeneity in mapping units based on subjectively applied classification and simplification, and this may lead to over-simplification and consequent reduction in the variety of information obtained and uncertainty in results. This research aimed at refining the suitability modelling for sea cucumber (Holothuria scabra) using fully raster-based data for the waters of Kiowa Bay, Kahyapu village in the district of Enggano, North Bengkulu, Indonesia. Using a GIS, all parameters affecting suitability for sea cucumber were rasterised to improve compatibility. The relevant data includes nine parameters of sea water namely acidity, depth, current velocity, temperature, salinity, brightness, dissolved oxygen concentration, condition of the sea floor, and coastal protection of the area. These parameters were surveyed in the field at 51 stations and each parameter was then digitized and interpolated (using Kriging method) to create a continuous raster-dataset. Correlation analysis was then conducted to check parameter correlation. Parameters with a correlation coefficient of 0.75 were excluded from further analysis since results could be derived from the remaining parameter set. Principal component analysis (PCA) was then applied to ascertain the weight of each component. Furthermore, scree plotting was employed to choose which principal components were relevant for insertion into the formula of suitability. The final result was then compared to the map of suitability from the analysis of vector-based data as the reference data set. The research results showed that this method can be used to locate areas that are suitable for sea cucumber farming. The suitability map for sea cucumber generated from the analysis using fully raster-based data displayed less uncertainty than the suitability map generated using vector-based data.

Biodiversitas makroalga di perairan pantai Pasar Lama dan Pantai Cukuh, Kabupaten Kaur, Provinsi Bengkulu Nurlaila Ervina Herliany; Dewi Purnama; Yusarwan Yamadipo
Journal of Aquatropica Asia Vol 1 No 1 (2014): Journal of Aquatropica Asia
Publisher : Jurusan Akuakultur, Universitas Bangka Belitung

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

Macroalgae or seaweeds is one of the economical nature resources and widespread in coastal waters of Indonesia, especially in coastal waters of Pantai Pasar Lama and Pantai Cukuh, Kaur Regency, Province of Bengkulu. Biodiversities of macroalgae were observed by direct observations and the species of macroalgae that have been found were identified in the observed location. There were three stations of observation, each of them had three lines transect and each line had four quadrat transects. The result showed that in the location of observations, there were 23 species of macroalgae, 10 species of Chlorophyta, 8 species of Rhodophyta and 5 species of Phaeophyta. Station 3 is the highest abundance (3,501.33 g.m-2), followed by station 2 (5,837.33 g.m-2) and the lowest abundance is station 1 (3,501.33 g.m-2). The difference on abundance of the three stations might be caused by the difference of condition of each station.

Kajian Aspek Bio-Ekologi Ikan Sidat (Anguilla Spp.) Di Sungai Air Ngalam Kabupaten Seluma Bendi Extra; Dede Hartono; Dewi Purnama
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 3, No 2 (2020)
Publisher : ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua

Eel (Anguilla spp.) is a fish that has a perfect tail, dorsal and anal fins. The eel's fins are equipped with visible soft fingers and the three fins are connected to each other, starting from the back to the tail and ending at the abdomen of the body. The thing that stands out from the eel is the presence of a pair of pectoral fins that are visible on both sides of the body which is located behind the head so that it is suspected that the fins are the ears. Identification of eel species is very important for the management of a resource. The ADL/% TL key character comparison is one way of identifying the types of eels that can be applied. Sampling and measurement of water parameters were carried out on 23 to 25 August 2020. From the research results obtained 1 type of eel, namely Anguilla bicolor (ADL/% TL = -0.37 to 4.76) where the eel entered the Yellow ell phase. This Anguilla bicolor eel likes slow-flowing waters (lentic waters) and sandy mud. Overall the water parameters in the Air Ngalam River are still in optimal conditions to support the survival of the eels, namely temperature 28.5 to 29.8oC, salinity 0 ppt, pH 7.1 to 7.4, brightness 96.48%, and flow velocity 23.78 cm/s. Based on statistical tests, the typology of the Air Ngalam river affects the types of eels found.Keywords: Eel; Phase; Typology; Identification

PERANAN DAN PEMANFAATAN MIKROALGA Tetraselmis chuii SEBAGAI BIOETANOL Bertoka Fajar SP Negara; Nining Nursalim; Nurlaila Ervina Herliany; Person Pesona Renta; Dewi Purnama; Maya Angraini Fajar Utami
JURNAL ENGGANO Vol 4, No 2
Publisher : Universitas Bengkulu

Bahan bakar fosil merupakan bahan bakar yang berasal dari pelapukan sisa mahluk hidup. Bahan bakar fosil bersifat tidak terbaharukan, maka pencarian bahan bakar alternatif yang terbarukan perlu dilakukan salah satunya bioetanol. Tetraselmis chuii dapat dijadikan bahan baku pembuatan bioetanol. Tujuan dari penelitian ini adalah untuk mengetahui volume bioetanol yang dihasilkan dari Fermentasi Tetraselmis chuii. Kultur Tetraselmis chuii selama 6 hari. Hidrolisis dilakukan dengan menambahkan H2SO4 0,2 M pada suhu 121oC dengan tekanan 1 atm selama 30 menit, Fermentasi dengan Saccharomyces cereviseae selama 5 hari. Penelitian ini menghasilkan gula reduksi Tetraselmis chuii dengan kadar gula 4% dan hasil fermentasi Tetraselmis chuii menghasilkan 12 ml etanol dengan konsentrasi 1%.THE ROLE AND UTILIZATION OF MICROALGAE Tetraselmis chuii AS BIOETHANOL. Fossil fuels are the fuel produced from the weathering of living things. Fossil fuels are non-renewable, therefore the research of renewable energy is needed. Bioethanol could be good solution. Tetraselmis chuii can be used as the raw material for bioethanol. The purpose of this study was to determine the volume of ethanol through fermentation of Tetraselmis chuii. Tetraselmis chuii was cultured for 6 days. The hydrolysis used 0.2 M H2SO4 at 1210C and pressure of 1 atm for 30 minutes, and the fermentation used Sacscharomyces cereviseae for 5 days. The results showed that Tetraselmis chuii produced 4% sugar and The fermentation produced 1% bioethanol with volume was 12 ml.

PERTUMBUHAN UDANG VANAME (Litopenaeus vannamei) DI TAMBAK INTENSIF Indah Purnamasari; Dewi Purnama; Maya Anggraini Fajar Utami
JURNAL ENGGANO Vol 2, No 1
Publisher : Universitas Bengkulu

Produksi yang tinggi merupakan tujuan dari budidaya udang vaname (Litopenaeus vannamei) secara intensif untuk memenuhi kebutuhan pasar dan salah satu upaya untuk meningkatkan produksi adalah dengan padat tebar tinggi. Penelitian ini bertujuan untuk untuk menganalisa pertambahan bobot dan kelangsungan hidup. Penelitian ini dilakukan dengan menggunakan metode purposif (Purposive Sampling Method). Hasil penelitian didapatkan bahwa padat tebar 170 dan 175 ekor/m2 memiliki hasil yang lebih baik diakhir pemeliharaan dilihat dari bobot rata-rata dan tingkat kelangsungan hidup yang lebih tinggi. Padat tebar 170 ekor/m2 menghasilkan bobot rata-rata 29,23 gram/ekor dan tingkat kelangsungan hidup 86,70. Padat tebar 175 ekor/m2 menghasilkan bobot rata-rata 29,18 gram/ekor dan tingkat kelangsungan hidup 82,35.

ANALISIS PARAMETER OSEANOGRAFI DAN LINGKUNGAN EKOWISATA PANTAI DI PANTAI PANJANG KOTA BENGKULU Apriliansyah Apriliansyah; Dewi Purnama; Yar Johan; Person Pesona Renta
JURNAL ENGGANO Vol 3, No 2
Publisher : Universitas Bengkulu

Ekowisata pantai adalah kegiatan ekowisata yang dilakukan di daerah pantai pada umumnya memanfaatkan sumberdaya pantai dan permukaan air. Pantai Panjang Kota Bengkulu merupakan pantai yang terdapat di bagian barat Pulau Sumatera dan berbatasan langsung dengan Samudera Hindia. Pantai Panjang yang membentang sepanjang 7 km dengan luas 84,09 ha. Penelitian ini bertujuan untuk menganalisis parameter oseanografi dan lingkungan ekowisata pantai di Pantai Panjang Kota Bengkulu. Metode yang dilakukan dalam penelitian ini adalah metode survei. Hasil penelitian ini diperoleh sebaran parameter oseanografi dan lingkungan dalam kondisi mendukung untuk kegiatan ekowisata pantai. Parameter-parameter tersebut yaitu tipe pantai, lebar pantai (m), material dasar perairan, kecepatan arus, kecerahan perairan (%), penutupan lahan pantai, biota berbahaya, ketersediaan air tawar (m) dan kedalaman perairan (cm).

UJI AKTIVITAS ANTIBAKTERI EKSTRAK METANOL RUMPUT LAUT Gracilaria edulis TERHADAP BAKTERI Aeromonas hydrophila Afti Ayu Putri Sinurat; Person Pesona Renta; Nurlaila Ervina Herliany; Bertoka FSP Negara; Dewi Purnama
JURNAL ENGGANO Vol 4, No 1
Publisher : Universitas Bengkulu

Aeromonas hydrophila merupakan jenis bakteri penyebab penyakit yang paling banyak ditemukan pada usaha budidaya perikanan. Alternatif pengobatan yang paling sering digunakan yaitu obat-obatan kimia yang tidak ramah lingkungan dan memberikan resistensi bakteri. Penelitian ini bertujuan untuk menganalisis ekstrak metanol rumput laut Gracilaria edulis dengan konsentrasi yang berbeda sebagai antibakteri terhadap bakteri Aeromonas hydrophila. Penelitian ini dimulai dengan preparasi rumput laut guna memperoleh ekstrak rumput laut kemudian melakukan preparasi bakteri yang bertujuan untuk mendapatkan bakteri Aeromonas hydrophila murni. Uji aktivitas antibakteri menggunakan metode difusi agar. Konsentrasi ekstrak metanol yang digunakan yaitu 3%, 6%, 9%, dan 12%. Masing-masing perlakuan diulang sebanyak tiga kali. Hasil penelitian menunjukkan ekstrak rumput laut Gracilaria edulis menggunakan pelarut metanol memiliki potensi sebagai antibakteri terhadap bakteri patogen Aeromonas hydrophila. Ekstrak metanol dengan konsentrasi 12% memiliki zona hambat yang paling besar (rata-rata 19,7 mm) dibandingkan dengan konsentrasi metanol lainnya. Semua ekstrak Gracilaria edulis memiliki sifat bakteriostatik.ANTIBACTERIAL ACTIVITIES OF SEAWEED METHANOL EXTRACTS Gracilaria edulis AGAINST Aeromonas hydrophila BACTERIA. Aeromonas hydrophila is the most common type of disease-causing bacteria found in aquaculture. The most commonly used alternative treatment is chemical drugs that are not environmentally friendly and provide bacterial resistance. This study aims to analyze the methanol extract of Gracilaria edulis seaweed with different concentrations as antibacterial against the bacterium Aeromonas hydrophila. This study began with the preparation of seaweed in order to obtain seaweed extract and then made bacterial preparations aimed at obtaining pure Aeromonas hydrophila bacteria. Antibacterial activity test using agar diffusion method. The concentrations of methanol extract used were 3%, 6%, 9%, and 12%. Each treatment was repeated three times. The results showed that Gracilaria edulis seaweed extract using methanol solvent had the potential as an antibacterial against the pathogenic bacterium Aeromonas hydrophila. Methanol extract with a concentration of 12% had the largest inhibition zone (average 19.7 mm) compared to other methanol concentrations. All Gracilaria edulis extracts had bacteriostatic properties.

Co-Authors Afti Ayu Putri Sinurat Alfian, Achmad Alfian, Achmad Ali Muqsit Ali Muqsit Ali Muqsit Alvianto Simanjorang Amelia Suryanita An Nisa Nurul Suci , An Ana Ariasari Apriliansyah Apriliansyah Aradea Bujana Kusuma Aradea Bujana Kusuma Astini, Lita Astuti, Anggini Fuji Bambang Sulistyo Bambang Sulistyo Bendi Extra Bertoka F. S. P Negara Bertoka Fajar SP Negara Bertoka Fajar SP Negara Bertoka Fajar SP Negara, Bertoka Fajar SP Bertoka Fajar Surya Prawira Negara Bertoka FSP Negara Bertoka FSP Negara Bona Loberto Pakpahan Dede Hartono Dede Hartono, Dede Dwi Ari Yasinto Rahmantyo Eko Nofriadiansyah Ervina Herliany, Nurlaila Fahri Rizky Firdha Iresta Wardani Firman Manalu Fitrisyah, Yandi habiburrahman, Lalu Harun Al Rasyid Helen Marlina M Hence Mahyarany Pasaribu Hidayah, Novita Nurul Indah Purnamasari Istikomah Jesica Marta Yosefa Jojor Marito Sinaga Kiki Median Leni Maryani Listyaningrum, Noviyanti M. Taufik Maestro Munru Maya Anggraini Maya Anggraini Maya Anggraini Fajar Utami Maya Angraini Fajar Utami Maya Angraini Fajar Utami, Maya Angraini Fajar Mujab, Muamar Mukti Dono Wilopo Mulstory Wander Simarmata Nella Tri Agustini, Nella Tri Nico Deodatus Adhi Nining Nursalim Noviyanti Listyaningrum Nurlaila Ervina Herliany Nurlaila Ervina Herliany Nurlaila Ervina Herliany Okawati Silitonga Pahabol, Aleks Permatasari, Nurul Person Pesona Renta Person Pesona Renta Person Pesona Renta Pinsi Hariman Pinsi Hiriman Rahmadina, Elsa Raja Aditya Sahala Siagian Rizki Slamet Slamet, Rizki Syarifudin Nur Trisela Yunisti Ully Wulandari, Ully Vania, Fedora Yar Johan Yar Johan Yar Johan Yar Johan Yar Johan Yar Johan Yar Johan, Yar Yusarwan Yamadipo Zamdial Zamdial, Zamdial

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