Journals Politeknik Negeri Sambas (Journal Poltesa)
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PENGEMBANGAN PEMASARAN HIDROPONIK DAN MEDIA TANAM DI BENGKEL AGROBISNIS POLITEKNIK NEGERI SAMBAS
Full text linkHidroponik dan Media Tanam merupakan unit usaha yang skalanya masih sangat kecil yang ada di Bengkel Agrobisnis. Saat ini, produksi hidroponik terbatas untuk kalangan kampus saja belum keluar. Hal ini dikarenakan tingkat produksi yang relative masih sangat kecil karena terbatasnya lubang tanam. Sehingga untuk meningkatkan pemasaran hal yang harus dilakukan adalah penambahan jumlah produksi dengan memperbanyak lubang tanamnya. Sehingga diharapkan pemasarannya bisa diluar kampus juga. Sedangkan media tanam untuk produksinya sudah cukup baik hanya pemasarannya belum maksimal, hal ini disebakan karena belum dikenalnya produk ini secara luas dan harga yang ditawarkan belum bisa bersaing dengan produk sejenis diluar. Maka dengan adanya program PKM PUPIV peningkatan akan produksi hidroponik dan media tanam dibarengi dengan peningkatan pemasaran akan produk tersebut
Analysis of the suitability and carrying capacity of coral reef ecotourism for diving tourism on Karampuang Island, Mamuju District, West Sulawesi Province
Full text linkNature tourism is a visit to a tourist spot that is still relatively natural, so it is minimal due to disturbance or pollution. The research objective was to analyze the cover condition, damage status of coral reefs, reef fish species diversity, and carrying capacity of the area for diving tourism development in the Karampuang Island Waters. The research was conducted from August 07 to October 07, 2020, in Karampuang Island, Mamuju Regency, West Sulawesi Province. The land suitability analysis used in the research was guided by the formula and matrix of land suitability for diving tourism and analysis of the area's carrying capacity. Based on the calculation of the research results, live coral cover, with an average of 27.26%, was included in the medium category. With a reef fish diversity index found at four stations ranging from 2.97-3.16, with 12 families, 33 species, and 557 individual fish, Karampuang Island is suitable for the development of diving tourism; the entire research area qualifies as marine tourism, especially diving tourism groups with suitability categories between 88.89-100% and the area reaches 52,740 m2 so that it can accommodate as many as 113 tourists per day
PENGARUH PENERAPAN PROGRAM PENGUNGKAPAN SUKARELA (PPS), SANKSI PERPAJAKAN DAN PELAYANAN FISKUS TERHADAP KEPATUHAN WAJIB PAJAK ORANG PRIBADI PADA KPP PRATAMA SINGKAWANG
Full text linkPenelitian ini dilakukaan bertujuan untuk menganalisis pengaruh penerapan program pengungkapan sukarela (PPS), sanksi perpajakan, dan pelayanan fiskus terhadap kepatuhan wajib pajak orang pribadi di kantor pelayanan pajak pratama sigkawang. Jenis penelitian ini menggunakan peneliian kuantiatif. Populasi yang digunakan pada penelitian ini adalah wajib pajak orang pribadi yang terdaftar di KPP Pratama Sigkawang khususnya di wilayah kabupaten Sambas. Adanya kenaikan dan penurunan wajib pajak orang pribadi di KPP Pratama Singkawang pada tahun 2021 ke 2022 terdapat penurunan 2.10% terhadap kepatuhan wajib pajak orang pribadi sedangkan 2022 ke 2023 terdapat kenaikan 6.67% terhadap kepatuhan wajib pajak orang pribadi. Dalam penelitian ini, sampel yang diambil menggunkan Teknik purposive sampling dengan data primer mengunkan kuesioner. Sampel ang akan diambil dalam penelitian ini berjumlah 100 responden. Metode data yang di gunakan dalam peneitian ini dengan menyebarkan kuesioner menggunakan google from melalui whatsapp. Teknik analisis data penelitian ini dilakukan dengan menggunakan teknik analisis Regresi Linier Berganda yang digunakan untuk mengetahui pengaruh dari setiap variabel independen terhadap variabel dependen. Sedangkan alat uji statistik menggunakan aplikasi SPSS versi 27. Penelitian ini memiliki beberapa keterbatasan, antara lain: hanya menggunakan 3 variabel (Program Pengungkapan Sukarela, Sanksi Perpajakan,dan Pelayanan Fiskus), dan hanya dilakukan di satu lokasi Kabupaten Sambas. Hasil penelitian ini ialah bahwa program pengungkapan sukarela (PPS) berpengaruh terhadap Kepatuhan Wajib Pajak Orang Pribadi yang berada di wilayah kabupaten Sambas. Sanksi Perpajakan berpengaruh terhadap Kepatuhan Wajib Pajak Orang Pribadi di wilayah kabupaten Sambas. Pelayanan Fiskus berpengaruh terhadap Kepatuhan Wajib Pajak Orang Pribadi di wilayah kabupaten Sambas
Seasonal Variability of Wind, Surface Current and Sea Surface Temperature in the Eastern Seram Waters During the 2015 Super El Nino
Full text linkThe eastern Seram waters are influenced by both the Seram Sea and the Banda Sea. This study aimed to examine variations in wind, surface currents, and sea surface temperature (SST) during 2015, coinciding with the super El Niño event. Data were obtained from the Group for High Resolution Sea Surface Temperature (GHRSST) and the Copernicus Marine Environment Monitoring Service (CMEMS). The results indicated that the monthly average wind speed in this area ranged from 0.01 to 8.98 m/s, with the lowest speed in November and the highest from January and June to September. Surface currents also exhibited seasonal variability, flowing from the Seram Sea to the Banda Sea during the west season (December–January) and reversing eastward in February. During the east season, Banda Sea water masses were supplied by Seram Sea water. Sea surface temperature decreased notably from June to August, with the lowest temperature recorded in August due to upwelling in the Banda and Arafura Seas. Surface currents formed eddies with warm water centers in the northern part of eastern Seram waters, and cold water centers (25,4 °C) were also observed. The convergence of these two water masses with distinct characteristics generated thermal fronts with temperature differences, resulting in strong temperature gradients from August to October as a consequence of upwelling and cooling induced by the intense El Niño at the end of 2015.The eastern Seram waters are influenced by both the Seram Sea and the Banda Sea. This study aimed to examine variations in wind, surface currents, and sea surface temperature (SST) during 2015, coinciding with the super El Niño event. Data were obtained from the Group for High Resolution Sea Surface Temperature (GHRSST) and the Copernicus Marine Environment Monitoring Service (CMEMS). The results indicated that the monthly average wind speed in this area ranged from 0.01 to 8.98 m/s, with the lowest speed in November and the highest from January and June to September. Surface currents also exhibited seasonal variability, flowing from the Seram Sea to the Banda Sea during the west season (December–January) and reversing eastward in February. During the east season, Banda Sea water masses were supplied by Seram Sea water. Sea surface temperature decreased notably from June to August, with the lowest temperature recorded in August due to upwelling in the Banda and Arafura Seas. Surface currents formed eddies with warm water centers in the northern part of eastern Seram waters, and cold water centers (25,4 °C) were also observed. The convergence of these two water masses with distinct characteristics generated thermal fronts with temperature differences, resulting in strong temperature gradients from August to October as a consequence of upwelling and cooling induced by the intense El Niño at the end of 2015
Tropical cyclone Lili in the Banda Sea, Indonesia: formation, development, and oceanic interaction
Full text linkThe Banda Sea serves as Indonesia's central region of water mass circulation and receives water flows from the Pacific Ocean, Indian Ocean, and South China Sea. This unique position facilitates significant interactions between the atmosphere and the ocean. This study aims to assess the dynamic factors supporting tropical cyclone Lili's growth in the Banda Sea. This study uses data from the Climate Data Store (CDS) and Marine Copernicus for May 4-12, 2019. The results show atmospheric dynamics, including the presence of low-pressure zones, high air humidity, and other meteorological factors that support the formation and movement of cyclones. During the study period, oceanographic conditions showed varying wind directions from various sources, hindering the wave formation process. Current patterns were observed moving from Australia through Tanimbar waters towards the Banda, Seram, and Timor Seas. In addition, eddy formation was found in Wetar waters, with downwelling processes occurring in the Banda Sea, while upwelling was detected in eastern Seram waters
Thermal front dynamics and the correlation with Sardinella Lemuru catches in the Bali Strait
Full text linkThe Bali Strait is a marine area rich in lemuru fish (Sardinella lemuru), making it a potential fishery commodity in Indonesia. Sustainable management of lemuru fish populations in the Bali Strait is crucial for maintaining ecosystem balance and ensuring the sustainability of the fishing industry in the region. This study aimed to identify the thermal fronts in the Bali Strait and the relationship between thermal fronts and lemuru fish production. This research was conducted using monthly sea surface temperature and surface current data from the CMEMS for the year 2023, along with lemuru production data from PPN Pengambengan. An edge detection method was employed to determine thermal fronts. The results showed that sea surface temperatures ranged from 24.9°C to 29°C. The meridional movement from North to South dominates the Bali Strait surface currents. Thermal fronts were observed throughout the year, with weak fronts dominating during the west monsoon and transition season I, whereas strong fronts intensified during the southeast monsoon. However, the correlation between thermal fronts and lemuru catch was very weak (r=-0.047442), suggesting that thermal fronts are not the primary factor influencing lemuru catch.The Bali Strait is a marine area rich in lemuru fish (Sardinella lemuru), making it a potential fishery commodity in Indonesia. Sustainable management of lemuru fish populations in the Bali Strait is crucial for maintaining ecosystem balance and ensuring the sustainability of the fishing industry in the region. This study aimed to identify the thermal fronts in the Bali Strait and the relationship between thermal fronts and lemuru fish production. This research was conducted using monthly sea surface temperature and surface current data from the CMEMS for the year 2023, along with lemuru production data from PPN Pengambengan. An edge detection method was employed to determine thermal fronts. The results showed that sea surface temperatures ranged from 24.9°C to 29°C. The meridional movement from North to South dominates the Bali Strait surface currents. Thermal fronts were observed throughout the year, with weak fronts dominating during the west monsoon and transition season I, whereas strong fronts intensified during the southeast monsoon. However, the correlation between thermal fronts and lemuru catch was very weak (r=-0.047442), suggesting that thermal fronts are not the primary factor influencing lemuru catch
Rekayasa dan Pengujian Mesin Pemipih Emping Beras dengan Metode Tumbuk
Full text linkEmping beras merupakan makanan tradisional yang dibuat dari bahan padi muda tradisonal dengan cara ditumbuk menggunakan allu dan lesung. Upaya untuk mengefisiensikan proses pembuatan makanan ini dikembangkan melalui teknik pengolahan mekanis. Melalui penelitian ini, diupayakan pengolahan emping beras secara mekanis melalui rekayasa dan pengujian mesin pemipih emping beras. Pelaksanaan penelitian meliputi desain, pembuatan, dan uji kinerja mesin. Variabel pengujian adalah lama proses penumbukan emping yang divariasikan menjadi 4 perlakuan yaitu selama 3,5,7, dan 10 menit. Data yang diambil adalah persentase dan kapasitas pengempingan. Proses pembuatan mesin pemipihan emping beras meliputi pembuatan poros, sistem pemipihan dan rangka. Mesin hasil rancang bangun memiliki panjang 500 mm, lebar 500 mm dan tinggi 1500 mm. Bahan rangka menggunakan besi siku berukuran 40 x 40 x 3 mm, menggunakan motor listrik berdaya ¼ HP. Sistem transmisi menggunakan gearbox dan puli. Mesin dioperasikan pada kecepatan penumbukan 110 kali/menit. Berdasarkan hasil pengujian, persentase pengempingan diperoleh sebesar 36,19% dengan kapasitas pengempingan 0,43 kg/jam yang didapatkan dengan waktu pemipihan selama 5 menit
Penerapan Pengendalian Internal Persediaan Barang Dagang Untuk Meningkatkan Kinerja Keuangan UMKM (Studi Kasus: Toko Sembako Munadi Mensere)
Full text linkPenelitian ini bertujuan untuk menganalisis bagaimana penerapan sistem pengendalian internal atas persediaan barang dagang diterapkan di UMKM Toko Sembako Munadi yang berlokasi di Desa Mensere, dengan mengacu pada kerangka kerja COSO. Persediaan merupakan komponen penting dalam operasional usaha dagang, sehingga diperlukan kontrol internal yang kuat untuk memastikan pengelolaannya optimal dan terhindar dari potensi kerugian. Metodologi penelitian menggunakan pendekatan deskriptif kualitatif, dengan teknik pengumpulan data berupa observasi, wawancara, dan studi dokumentasi. Proses analisis dilakukan melalui tahap pengumpulan data, reduksi, penyajian informasi, dan penarikan kesimpulan. Hasil studi memperlihatkan bahwa Toko Sembako Munadi telah menerapkan sebagian besar unsur dalam kerangka COSO, seperti lingkungan pengendalian, identifikasi risiko, prosedur pengendalian, serta sistem komunikasi dan informasi. Meski begitu, terdapat kelemahan pada aspek pemantauan karena belum dilakukan evaluasi secara berkala terhadap pengelolaan persediaan. Oleh karena itu, sistem pengendalian internal yang ada belum berjalan secara maksimal. Penelitian ini menyarankan peningkatan dalam hal dokumentasi, pemisahan tanggung jawab kerja, serta pelaksanaan evaluasi rutin agar pengendalian internal dapat berjalan lebih efektif dan mendukung kinerja keuangan toko secara keseluruhan
Identification and Role of Microalgae Found in Catfish (Clarias gariepinus) Cultivation Pond
Full text linkMicroalgae play an essential role in aquaculture as primary producers, serving both as natural feed and as bioindicators for assessing pond water quality. The presence of specific microalgal taxa is crucial for evaluating aquatic conditions and identifying potential natural feed sources. This study aimed to identify microalgal species found in African catfish (Clarias gariepinus) culture ponds and to determine their ecological roles. A descriptive survey method was applied. Water samples were collected using a plankton net from three catfish culture ponds during August–September 2025. Identified microalgae were morphologically classified and analyzed for their potential as bioindicators based on literature review using Palmer’s Pollution Index. The results revealed 16 genera belonging to three divisions: Bacillariophyta (diatoms), Chlorophyta (green algae), and Cyanophyta (blue-green algae). Two genera of Bacillariophyta were identified—Aulacoseira and Synedra. Chlorophyta was the most dominant division, comprising 11 genera: Actinastrum, Coelastrum, Dictyosphaerium, Golenkinia, Micractinium, Oocystis, Pandorina, Pediastrum, Scenedesmus, Staurastrum, and Ulothrix. Cyanophyta included three genera—Anabaena, Aphanocapsa, and Spirulina. Among these, Scenedesmus and Pediastrum (Chlorophyta) are commonly used as natural feed, whereas Cyanophyta members are often utilized as water-quality bioindicators. The diversity and abundance of microalgae observed in the catfish ponds indicate organic enrichment, yet they also provide valuable potential as natural feed sources.Microalgae play an essential role in aquaculture as primary producers, serving both as natural feed and as bioindicators for assessing pond water quality. The presence of specific microalgal taxa is crucial for evaluating aquatic conditions and identifying potential natural feed sources. This study aimed to identify microalgal species found in African catfish (Clarias gariepinus) culture ponds and to determine their ecological roles. A descriptive survey method was applied. Water samples were collected using a plankton net from three catfish culture ponds during August–September 2025. Identified microalgae were morphologically classified and analyzed for their potential as bioindicators based on literature review using Palmer’s Pollution Index. The results revealed 16 genera belonging to three divisions: Bacillariophyta (diatoms), Chlorophyta (green algae), and Cyanophyta (blue-green algae). Two genera of Bacillariophyta were identified—Aulacoseira and Synedra. Chlorophyta was the most dominant division, comprising 11 genera: Actinastrum, Coelastrum, Dictyosphaerium, Golenkinia, Micractinium, Oocystis, Pandorina, Pediastrum, Scenedesmus, Staurastrum, and Ulothrix. Cyanophyta included three genera—Anabaena, Aphanocapsa, and Spirulina. Among these, Scenedesmus and Pediastrum (Chlorophyta) are commonly used as natural feed, whereas Cyanophyta members are often utilized as water-quality bioindicators. The diversity and abundance of microalgae observed in the catfish ponds indicate organic enrichment, yet they also provide valuable potential as natural feed sources
PEMBUATAN NORI RUMPUT LAUT (EUCHEUMA SPINOSUM) DENGAN PENAMBAHAN DAUN SINGKONG
Full text linkThis research aims to develop a formulation that combines Eucheuma spinosum seaweed and cassava leaves to produce nori with optimal physicochemical and sensory characteristics. The method used used a completely randomized design (RAK) method with five different formulations of seaweed and cassava leaves in varying ratios, namely (60:40), (65:35), (70:30), (75:25), and (80:20). Parameters tested include water content, ash content, crude fiber content, color intensity, and organoleptic tests (color, texture, taste and aroma) to determine the best formulation. The results showed that the formulation (65 seaweed and 35 cassava leaves) achieved the best balance of physicochemical characteristics, with a water content of 9.6%, ash content of 22.7%, and crude fiber content of 21.15%. This innovative combination of Eucheuma spinosum and cassava leaves not only produces quite good quality nori but also supports food diversification based on local ingredients, increasing the value of agricultural commodities in Indonesia