Universitas Maritim Raja Ali Haji Pusat Jurnal Ilmiah
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STUDI EKSPERIMENTAL PEMANFAATAN CuO/ZEOLIT UNTUK DEGRADASI AIR GAMBUT MENGGUNAKAN METODE OZONOLISIS DAN PENGARUH TERHADAP KADAR BESI
Full text linkPeat water is surface water that is generally found in peatland areas and is mostly found in lowlands. Peat water has a low pH (3-5), is brownish-red in color, and contains many organic and inorganic substances. The more intense color of peat water indicates a higher content of chemical compounds. High levels of Fe metal in peat water can disrupt the peat swamp ecosystem itself, such as disrupting the activity of decomposer microorganisms, disrupting plant growth, and causing toxicity to humans and other living things if they consume it. This makes it not meet the requirements of household water and sanitation that is suitable for consumption. This study aims to determine the effect of the use of CuO/Zeolite catalysts on the degradation of peat water by ozonolysis method on Fe levels. After the degradation process at optimum conditions, the Fe level became 0.19 mg/L and was already at the safe limit of the quality standard used. Based on these data, the decrease in Fe metal concentration as well as BOD, COD, Nitrate, Nitrite, and TSS values in peat water by ozonolysis is more effective with the addition of CuO/Zeolite catalysts at optimum conditions
Perubahan Muka Air Laut dan Klorofil-A di Perairan Bengkulu Akibat Kejadian Enso
Full text linkPerairan Bengkulu merupakan salah satu perairan yang dipengaruhi oleh fenomena El-Niño Southern Oscillation (ENSO) sehingga memengaruhi perubahan muka air laut di wilayah Bengkulu. Penelitian ini bertujuan unutk menganalisis hubungan antara kejadian El-Niño dan La-Niña Terhadap perubahan muka air laut serta distribusi klorofil-a si Perairan Bengkulu. Data yang dianalisis mencakup SLA, klorofil-a, serta indeks Nino 3.4 dalam rentang waktu 20 tahun (2002–2022), yang diperoleh dari satelit altimetri multi-misi dan NOAA. Proses analisis dilakukan menggunakan perangkat lunak Panoply, SeaDAS, dan Excel, serta uji korelasi dan regresi linear dengan Matlab R2024b. Hasil Penelitian menunjukkan adanya korelasi linear negatif antara Indeks ENSO dan SLA (r = -0,12), serta korelasi linear positif antara Indeks ENSO dan klorofil-a (r = 0,13). Saat terjadi El-Niño, SLA mengalami penurunan (-0,1 hingga 0,1 m), sementara konsentrasi klorofil-a meningkat (-0,3hingga 0,4 mg/m³) akibat proses upwelling mengalami penguatan yang membawa nutrisi dari perairan dalam ke permukaan. Sebaliknya saat La Niña terjadi, SLA cenderung meningkat sebesar 0,1 hingga 0,12 m, sedangkan klorofil-a mengalami penurunan sebesar 0,2 hingga 0,5 mg/m³ akibat adanya proses downwelling. Namun, selama periode La-Niña 2007–2009, ditemukan anomali dimana SLA mengalami penurunan, sementara klorofil-a meningkat. Hal ini diduga disebabkan oleh upwelling lokal yang dipengaruhi oleh fenomena Indian Ocean Dipole (IOD positif). Penelitian ini menunjukkan bahwa ENSO memiliki dampak signifikan terhadap dinamika oseanografi di perairan Bengkulu. Penelitian ini dapat dijadikan informasi awal khususnya bagi nelayan dan masyarakat sekitar pesisir dalam adaptasi dampak perubahan lingkungan laut akibat kejadian ENSO.Perairan Bengkulu merupakan salah satu perairan yang dipengaruhi oleh fenomena El-Niño Southern Oscillation (ENSO) sehingga memengaruhi perubahan muka air laut di wilayah Bengkulu. Penelitian ini bertujuan unutk menganalisis hubungan antara kejadian El-Niño dan La-Niña Terhadap perubahan muka air laut serta distribusi klorofil-a si Perairan Bengkulu. Data yang dianalisis mencakup SLA, klorofil-a, serta indeks Nino 3.4 dalam rentang waktu 20 tahun (2002–2022), yang diperoleh dari satelit altimetri multi-misi dan NOAA. Proses analisis dilakukan menggunakan perangkat lunak Panoply, SeaDAS, dan Excel, serta uji korelasi dan regresi linear dengan Matlab R2024b. Hasil Penelitian menunjukkan adanya korelasi linear negatif antara Index ENSO dan SLA (r = -0,1239), serta korelasi linear positif antara ENSO dan klorofil-a (r = 0,1328). Saat terjadi El-Niño, SLA mengalami penurunan (-0,06 hingga 0,2 m per bulan), sementara konsentrasi klorofil-a meningkat (0,4 hingga 0,6 mg/m³ per bulannya) akibat proses upwelling mengalami penguatan yang membawa nutrisi dari perairan dalam ke permukaan. Sebaliknya saat La Nina terjadi, SLA cenderung meningkat (0,1 hingga 0,12 m per bulan), sedangkan klorofil-a mengalami penurunan (0,1 hingga 0,3 mg/m³ per bulan) proses tersebut didominasi oleh proses downwelling. Namun, selama periode La-Niña 2007–2009, ditemukan anomali dimana SLA mengalami penurunan, sementara klorofil-a meningkat. Hal ini diduga disebabkan oleh upwelling lokal yang dipengaruhi oleh fenomena Indian Ocean Dipole (IOD positif). Penelitian ini menunjukkan bahwa ENSO memiliki dampak signifikan terhadap dinamika oseanografi di perairan Bengkulu. Penelitian ini dapat dijadikan informasi awal khususnya bagi nelayan dan masyarakat sekitar pesisir dalam adaptasi dampak perubahan lingkungan laut akibat kejadian ENSO
The Effectiveness of Improving the Economy of the Trirenggo Village Community through the Trirenggo Culinary Park
Full text linkAbstract: Poverty is still a crucial issue in Bantul Regency, including in Trirenggo sub-district. This study aims to evaluate the effectiveness of local government and BUMKal initiatives in developing Trirenggo Culinary Park as an effort to improve the community\u27s economy. Using descriptive qualitative methods, this study collected data through observation, interviews with traders and BUMKal managers, as well as secondary data analysis such as village economic growth data. This research examines the factors that contribute to the success of Taman Kuliner, including the utilization of local potential (Trirenggo Field), financial support and policies that support MSMEs, the active role of BUMKal in management, community participation, and promotion strategies through social media. The results show that Taman Kuliner has had a positive impact on the local economy, indicated by increased village economic growth and increased trader income. The study concludes that a community-based economic empowerment model, with government support and active community participation, is effective in improving welfare and reducing poverty levels
Securitization of Coastal Defense in The Delta Works Projects: Lesson learned for Indonesia
Full text linkThe phenomenon of sea level rise, attributable to climate change, poses a significant threat to island nations and coastal regions, including Indonesia. Jakarta, a metropolitan area with a population of 10.684.946, is projected to experience substantial flooding, with estimates indicating that by 2050, one-third of the city may be submerged. In response to this impending threat, the Indonesian government has initiated developments in coastal defense. To identify appropriate measures for Indonesia, it is essential to reference the experiences of other nations, notably the Netherlands. The Netherlands was selected due to its extensive experience in coastal defense, particularly through its Delta program. The success of this initiative commenced in 1953 following a catastrophic flood that resulted in significant loss of life and property. The Delta Works project, which was undertaken as the initial response, engaged all societal levels and aimed to safeguard coastal areas and regions below sea level from future flooding incidents. This research employs qualitative methodologies and literature techniques, presenting findings in a descriptively narrative format through the lens of securitization theory. The objective of this study is to elucidate the Dutch measures in implementing the Delta program, with a specific focus on the Delta Works, and to extract lessons applicable to Indonesia, particularly within the Jakarta region, from the successful development of coastal defense initiatives. The findings indicate that the Netherlands established a national defense framework through the institutions of the Delta program. Key elements necessary for the success of coastal defense projects include community involvement, transparency, and a commitment to long-term engagement in the implementation of these initiatives
Evaluation of the Decree of the Minister of Environment and Forestry Number 17 of 2018 concerning Procedures for Release of Forest Areas and Changes in Forest Area Boundaries for Land Resources for Agrarian Reform Objects in Riau Province
Full text linkIndonesia has a forest area of around 94.1 million hectares which consists of various spatial functions including those used as Production Forests. Production forests which are currently used are around 63 million ha of Indonesia\u27s forest area which is divided into permanent production forest areas, limited production forests. , and convertible production forests (HPK). In accordance with the policies contained in the Agrarian Reform Object Land (TORA) program issued by the central government, HPK is one of the targets used for area release. The current phenomenon that is occurring is that TORA does not accommodate land issues that previously had property rights issued by the National Land Agency which then turned into Convertible Production Forests. So far, what has arisen regarding land issues is the land mafia, but in this phenomenon the community is harmed again by changes in areas where the land with property rights status cannot be cultivated and bought and sold. This research will be carried out in Riau province with the National Land Agency and the Riau Provincial Forest Service as objects. The aim of this research is to resolve disputes over land issues, not only TORA, but also people who previously had land rights issued by BPN, changing their status to HPK. The method and type of this research is Qualitative Descriptive. The technique for attracting informants uses a proportional sampling technique and data collection techniques in this research are interviews, observation, literature study and documentation
Mengapa pelanggan membeli produk secara online? Efek dari content marketing, online review, dan brand image
Full text linkThis study aims to conduct research on how Content Marketing, Online Reviews, and Brand Image influence purchasing decisions for Wardah skincare products for people in Batam City. dnerm The research population includes Batam people who have purchased Wardah skincare products online, with a sample size of 170 respondents. The method used is a quantitative approach, where data is collected through a survey using a questionnaire distributed to the people of Batam according to predetermined criteria. Data analysis was performed with SEM (Structural Equation Model) using SmartPLS software. The findings of this study indicate that Online Reviews have no influence on purchasing decisions, while Content Marketing and Brand Image are proven to have a significant effect on purchasing decisions. In addition, the people of Batam are very concerned about Content Marketing and Online Review when assessing a skincare brand.Penelitian ini bertujuan untuk melakukan penelitian bagaimana Content Marketing, Online Review, dan Brand Image memengaruhi Keputusan Pembelian produk skincare Wardah pada masyarakat di Kota Batam. Populasi penelitian mencakup masyarakat Batam yang pernah membeli produk skincare Wardah secara online, dengan jumlah sampel sebanyak 170 responden. Metode yang digunakan adalah pendekatan kuantitatif, di mana data dikumpulkan melalui survei menggunakan kuesioner yang disebarkan kepada masyarakat Batam sesuai dengan kriteria yang telah ditetapkan. Analisis data dilakukan dengan SEM (Structural Equation Model) menggunakan perangkat lunak SmartPLS. Temuan penelitian ini mengindikasikan bahwa Online Review tidak memiliki pengaruh terhadap keputusan pembelian, sementara Content Marketing dan Brand Image terbukti berpengaruh signifikan terhadap keputusan pembelian. Selain itu, masyarakat Batam sangat memperhatikan Content Marketing dan Online Review ketika menilai sebuah brand skincare
Pengaruh Kinerja Lingkungan, Biaya Lingkungan Dan Risiko Bisnis Terhadap Nilai Perusahaan (Studi Kasus Pada Perusahaan Subsektor Makanan Dan Minuman Yang Terdaftar Di BEI Periode 2019-2023)
Full text linkThis study aims to determine the effect of environmental performance, environmental costs and business risk on firm value. This research is a quantitative research. The population in this study included all food and beverage subsector companies. The sample in this study amounted to 24 companies. The sampling method used is purposive sampling. Hypothesis testing using multiple regression analysis. The results showed that environmental performance and business risk had no effect on firm value. Environmental costs have a positive effect on firm value.Penelitian ini bertujuan untuk mengetahui pengaruh kinerja lingkungan, biaya lingkungan dan risiko bisnis terhadap nilai perusahaan. Jenis penelitian ini adalah penelitian kuantitatif. Populasi dalam penelitian ini meliputi seluruh perusahaan subsektor makanan dan minuman. Sampel pada penelitian ini berjumlah 24 perusahaan. Metode penentuan sampel yang digunakan adalah purposive sampling. Pengujian hipotesis menggunakan analisis regresi berganda. Hasil penelitian menunjukkan bahwa kinerja lingkungan dan risiko bisnis tidak berpengaruh terhadap nilai perusahaan. Biaya lingkungan berpengaruh positif terhadap nilai perusahaan
Vehicle Safety System Integrated with GSM Network (Global System for Mobile Communications) on Vehicle Ignition System
Full text linkThis research aims to design and create a sms-based motor vehicle security system with an ATMega 8535 microcontroller. This research utilizes hand phone technology and microcontroller. Making this tool has an economical price to secure motorized vehicles. Important prototypes in making this tool are the ATMega 8535 microcontroller, GSM Modem and HP. In making this tool the first thing to make is to make a microcontroller program for the controller. Making this program uses CV Avr soft ware (Code Vision Avr). After the program is finished, the program is downloaded to the microcontroller. Control is done by the microcontroller when it gets input. The result of this research is to get a vehicle security system that is integrated by the ignition system on a motorcycle. The process of securing a motorized vehicle when it is stolen is, the security system will send sms information that the motorcycle is stolen, the alarm sounds and the ignition system is cut off. To turn off the alarm and start the motorcycle, the owner sends an SMS with the format *ALOF# to the security system and starts the motorcycle normally (Pull the front brake three times then position the key to ON mode)
Pelatihan personal confidence untuk meningkatkan kepercayaan diri berbicara di depan umum pada mahasiswa STAK Terpadu Pesat Salatiga
Full text linkBerdasarkan survei awal terhadap 47 mahasiswa Sekolah Tinggi Agama Kristen (STAK) Terpadu Pesat Salatiga, sebanyak 27,7% responden menyatakan bahwa kurangnya kepercayaan diri, terutama saat berbicara di depan umum, merupakan tantangan utama dalam perkuliahan. Pengabdian kepada Masyarakat (PkM) ini bertujuan untuk meningkatkan kepercayaan diri mahasiswa melalui pelatihan berbasis praktik langsung. Metode yang digunakan meliputi ceramah singkat, diskusi interaktif, simulasi, praktik presentasi, peer coaching, latihan mental (reframing dan self-talk positif), serta sesi refleksi. Evaluasi efektivitas pelatihan dilakukan melalui pre-test dan post-test, observasi performa, serta self-assessment. Peserta dalam kegiatan ini berjumlah 40 mahasiswa aktif. Hasil pelatihan menunjukkan peningkatan signifikan dalam kepercayaan diri mahasiswa, yang tercermin dari kenaikan skor post-test rata-rata sebesar 1,05 poin dibandingkan pre-test. Observasi dan penilaian presentasi menunjukkan peningkatan dalam artikulasi, kontak mata, dan penyampaian pesan. Mayoritas peserta juga melaporkan peningkatan persepsi kepercayaan diri melalui self-assessment. Pelatihan ini menunjukkan bahwa metode berbasis praktik dan umpan balik terstruktur efektif dalam meningkatkan kepercayaan diri mahasiswa saat melakukan presentasi di depan umum
Upaya Meningkatkan Kompetensi Literasi Dan Numerasi Siswa Dalam Program Kampus STAIDA Mengajar
Full text linkProgram pengabdian kepada masyarakat ini dilatarbelakangi oleh rendahnya kemampuan literasi dan numerasi siswa sekolah dasar, yang menjadi perhatian dalam upaya peningkatan mutu pendidikan nasional. Bertempat di SD Negeri 5 Tugumulyo, kegiatan ini merupakan bagian dari inisiatif "Kampus STAIDA Mengajar" yang bertujuan untuk memberdayakan mahasiswa sebagai agen pembelajaran di sekolah-sekolah mitra. Program ini dirancang untuk meningkatkan kemampuan dasar siswa dalam membaca, menulis, dan berhitung serta membantu sekolah dalam adaptasi teknologi pembelajaran dan administrasi. Metode pelaksanaan menggunakan pendekatan partisipatif yang meliputi sosialisasi, observasi, perencanaan program, pelaksanaan pengajaran langsung, serta evaluasi bersama pihak sekolah. Kegiatan yang dilakukan mencakup bimbingan literasi dan numerasi secara intensif, penyusunan media pembelajaran interaktif, pelatihan penggunaan teknologi untuk guru dan siswa, serta pendampingan dalam manajemen administrasi sekolah. Hasil dari kegiatan ini menunjukkan adanya peningkatan kemampuan dasar siswa, terutama pada siswa yang sebelumnya mengalami kesulitan membaca dan berhitung, serta peningkatan pemanfaatan teknologi dalam proses pembelajaran. Program ini juga memberikan dampak positif terhadap kemampuan sosial dan kepemimpinan mahasiswa, serta mempererat hubungan antara institusi pendidikan tinggi dan sekolah mitra. Kesimpulannya, program ini terbukti efektif dalam meningkatkan kompetensi literasi dan numerasi siswa serta memberikan kontribusi nyata terhadap kualitas pendidikan dasar. Keberlanjutan program diharapkan dapat memberikan manfaat jangka panjang bagi sekolah dan komunitas sekitar