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ANALISA STRUKTUR GEOLOGI BALURAN BERDASARKAN DATA GRAVITASI DAN GEOMAGNETIK Maulana, Alfian; Hadi, Abu Anas; Thar, Ines Adnan; Mahmud, Daniel; Atawolo, Yuliano Eldianto; Hidayatulloh, Cahyadi Kamal; Widiatmoko, Fajar Rizki
Prosiding Seminar Teknologi Kebumian dan Kelautan Vol 3, No 1 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/p.semitan.2021.2003

Daerah penelitian berada pada wilayah Gunung Baluran Kecamatan Banyuputih, Kabupaten Situbondo, Provinsi JawaÂ Timur.Â MetodeÂ yangÂ digunakanÂ adalahÂ metodeÂ geofisikaÂ gravitasi,Â magnetik,Â danÂ faultÂ fractureÂ densityÂ (FFD).Â MetodeÂ gravitasi menghasilkan peta anomali gravitasi residual yang kemudian dibuat profil penampang untuk mengetahuiÂ struktur bawah permukaan bumi. Peta FFD dibuat berdasarkan kelurusan morfologi dikombinasikan dengan petaÂ residual untuk mengetahui asosiasi struktur bawah permukaan dengan permukaan bumi dan arah trend strukturÂ geologi. Metode magnetik menghasilkan peta anomali magnet yang berguna untuk menginterpretasi sumber panas.Â Dalam sepuluh tahun terakhir, metode analisis FFD telah digunakan secara luas, terutama dalam studi awal panasÂ bumi yang dapat menunjukkan prospek daerah reservoir. Korelasi antara nilai FFD dengan nilai gravitasi residual,Â yangÂ diasumsikanÂ sebagaiÂ indikatorÂ magmaÂ diÂ bawahnya.Â KorelasiÂ antaraÂ nilaiÂ FFDÂ danÂ nilaiÂ gravitasiÂ residualÂ berlakuÂ untuk Pegunungan Baluran. Baluran diklasifikasikan sebagai badan vulkanik yang memiliki tipe batuan sedimenÂ dengan pengaturan tektonik busur magmatik. Relevansi menunjukkan Nilai FFD berkaitan dengan nilai gravitasiÂ residual,Â tetapiÂ terutamaÂ yangÂ tidak terpengaruh oleh aktivitasÂ strukturalÂ memilikiÂ nilaiÂ FFDÂ yang lebih rendah.

ANALISIS EFEK SKALA PADA PENGUJIAN KUAT TEKAN UNIAKSIAL TERHADAP BATUGAMPING PADA DESA DELEGAN, KECAMATAN PANCENG, KABUPATEN GRESIK, PROVINSI JAWA TIMUR Maulana, Alfian; Syahputra, Aldy Elriq; Saputri, Melly Ayu; Saputra, Wahyu; Sa'adah, Zuhrotus; Cahyono, Yudho Dwi Galih
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2021: Peluang dan Tantangan Peningkatan Riset dan Teknologi di Era Pasca Covid-19
Publisher : Institut Teknologi Adhi Tama Surabaya

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Lokasi pengambilan sample terletak di Desa Delegan, kecamatan Panceng, Kabupaten Gresik, Provinsi Jawa Timur, dengan komoditas batugamping. Penelitian ini bertujuan untuk menganalisis pengaruh ukuran contoh batuan terhadap hasil nilai kuat tekan uniaksial dan menganalisis spesifik energi pada masing masing ukuran contoh. Untuk mengetahui pengaruh ukuran contoh batuan terhadap hasil nilai kuat tekan uniaksial dan menganalisis spesifik energi pada masing masing ukuran contoh dilakukan pengujian yakni uji kuat tekan Uniaxial. Uji kuat tekan uniaksial ialah bagaimana batuan tersebut bisa bertahan dalam sifat elastisitasnya sebelum runtuh. Dari uji tersebut menghasilkan nilai kuat tekan uniaksial, nisbah poisson dan modulus young. Sehingga diperlukan untuk menentukan kesamaan karakteristik antara batuan utuh dan massa batuan disebut sebagai analisis efek skala. Efek skala sendiri memiliki definisi semakin besar contoh batuan utuh yang di uji maka akan sama seperti sifat dari massa batuan tersebut. Sehingga analisis efek skala digunakan untuk menetukan kesamaan sifat antara batuan utuh dengan massa batuan. Salah satu pengujian yang digunakan dalam penentuan efek skala adalah dengan pengujian kuat tekan uniaksial. Pengujian dilakukan terhadap tiga sample batugamping yang masing-masing sample memiliki ukuran diameter 60 mm (Sample A), 65 mm (Sample B) dan 70 mm (Sample C) menghasilkan nilai untuk nilai kuat tekan uniaksial 50,74 MPa (sample A) 42,41 MPa (sample B) dan 36,38 MPa (Sample C) untuk poison ratio dengan diameter 60 mm bernilai 0,06 untuk diameter 65 mm bernilai 0,07 dan untuk diameter 70 mm bernilai 0,23. Untuk sample A dengan diameter batuan 60 mm memiliki nilai modulus young 15150,00 MPa untuk sample B dengan diameter batuan 65 mm memiliki nilai modulus young 12680,00 MPa dan untuk sample C dengan diameter 70 mm memiliki nilai modulus young 4818,18 MPa.

Bioremediasi Logam Pb pada Limbah Tekstil dengan Staphylococcus aureus dan Bacillus subtilis Maulana, Alfian; Supartono, Supartono; Mursiti, Sri
Indonesian Journal of Chemical Science Vol 6 No 3 (2017)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v6i3.16639

Limbah cair industri tekstil mengandung logam berat yang bersifat toksik sehingga perlu dilakukan proses pengolahan limbah. Bioremediasi merupakan salah satu metode alternatif untuk menurunkan kadar logam berat dalam limbah. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan mikroba eksogen Staphylococcus aureus dan Bacillus subtilis terhadap jumlah total sel bakteri pada proses bioremediasi logam Pb sedimen sungai setu dengan metode TPC (total plate count) dan destruksi basah. Mikroba eksogen yang digunakan pada penelitian ini adalah S.aureus dan B. subtilis dengan konsentrasi masing-masing 10 dan 20%. Pengujian sampel dilakukan sebelum dan sesudah perlakuan menggunakan SSA (Spektrofotometer Serapan Atom) kemudian dihitung penurunan kadarnya. Hasil penelitian menunjukkan jumlah total sel tertinggi dengan perlakuan kontrol negatif sebanyak 4,3x108 CFU/mL. Persen penurunan kadar logam Pb tertinggi dengan perlakuan S. aureus 20% sebesar 95,85%, dan waktu inkubasi optimum pada 30 hari.

Tingkat Pengetahuan dengan Perilaku Personal Hygiene Remaja Putri Pada Saat Menstruasi di Desa Tuntungan II Nurhayati, Nurhayati; Putri, Adelia; Raihan, Ahmad Fitra; Maulana, Alfian; Siregar, Anisa Putri; Darmayanti, Darmayanti; Yulianti, Dena; Panggabean, Hikmah Tin; Rifda, Khairun Rani Mawa; Purba, Khairunnisa Insani; Zahra, Klisa Putri; Harahap, Muhammad Irwandi; Tanjung, Putri Keza Hidayah; Batubara, Rini Warahmah; Masyithah, Ruhul; Salsabila, Salsabila; Ritonga, Sela; Siregar, Siti Romaito; Ramadan S, Suci Aulia
Health Information : Jurnal Penelitian Content Digitized
Publisher : Poltekkes Kemenkes Kendari

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This study aims to evaluate the level of knowledge and personal hygiene behavior of adolescent girls during menstruation in Tuntungan II Village, Pancur Batu District, Deli Serdang Regency, North Sumatra. Through a quantitative approach with a cross-sectional research design, data was collected from 30 young women via questionnaire on November 11 2023. The results showed that the majority of respondents had a good (53.3%) and sufficient (40%) level of knowledge about personal hygiene. during menstruation, with only 6.7% having a poor level of knowledge. In terms of personal hygiene behavior, the majority of respondents showed good behavior (83.3%), while 13.4% rated their behavior as adequate, and only 3.3% had poor behavior. Based on these findings, it is recommended to increase personal hygiene education, especially regarding menstruation, both through formal education in schools and through outreach campaigns in the community. It is necessary to provide more comprehensive material and increase the accessibility of information through the use of the internet and digital resources. Apart from that, supporting families in an active role in providing education to young women through seminars or family discussion groups can also help build a shared understanding of the importance of personal hygiene during menstruation. It is hoped that these steps can improve the reproductive health of young women in Tuntungan II Village and its surroundings.

Arena and (Re)Stabilization of Reog Bulkiyo Dance Cultural Production Salam, Aprinus; Maulana, Alfian
Jurnal Kawistara Vol 14, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/kawistara.92385

Contestation among traditional art performances, in the technology and information era, creates complex and diverse challenge to the dance of Reog Bulkiyo. In 1999, the dance had to be stopped following the regeneration and economical problem. Although Reog Bulkiyo has been performed again since 2009, the conditions which makes this dance can be produced is still inexplicable. This article attempts to explain why dance experiencing production and activity stagnation. Pierre Bourdieu’s cultural production theory is used to analyze this problem, while ethnographic qualitative is used as the method. This study found that Reog Bulkiyo dance is in the arena of traditional dance art which has a double-tiered structure. The first structure leads to popular culture, while the second structure leads to art culture. In the first structure, Reog Bulkiyo dance group uses relational capital with relatives, social and Islamic groups to survive in the midst of competition with other popular arts. The dance then gains a relationship with the academy and the state which provides relational, cultural, and symbolic capital in the form of granting intangible cultural heritage status. These two relations give Reog Bulkiyo dance group the opportunity to maintain its cultural production.

Analyze the implementation of Risk Management and Emergency Response in the Workplace: Literatur Review Ramadhani, Dwi Ajeng; Maulana, Alfian; Naufal, Ahmad Fitra; Hasibuan, Abdurrozzaq
AMK : Abdi Masyarakat UIKA Vol. 4 No. 3 (2025): SEPTEMBER
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/amk.v4i3.2722

Based on the analysis of the eight journals, it is concluded that the implementation of risk management and emergency response in the workplace is crucial for building a safe and efficient work environment. Every organization must have a clear and comprehensive plan to handle risks and respond to emergency situations. In addition, training and awareness regarding safety among employees are also important elements in improving preparedness and response to emergencies. This study offers valuable insights for organizations to develop more effective risk management practices and enhance workplace safety and health. This study utilizes library research or literature review. For gathering data for literacy studies, one can reference local and international books, research journals, scientific articles, and studies done by other researchers, the result is based on the analysis of the journals, it is concluded that the implementation of risk management and emergency response in the workplace is crucial for building a safe and efficient work environment. Every organization must have a clear and comprehensive plan to handle risks and respond to emergency situations.

Evaluation of the Effectiveness of Occupationnal Safety and Health Management System in Railway Operations: Literatur Review Naufal, Ahmad Fitra; Ramadhani, Dwi Ajeng; Maulana, Alfian; Hasibuan, Abdurrozzaq
AMK : Abdi Masyarakat UIKA Vol. 4 No. 3 (2025): SEPTEMBER
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/amk.v4i3.2723

An effective Occupational safety and health management system is expected to create a safe and healthy working environment for all workers. In the context of railway operations, this system covers various aspects, ranging from safety training, the use of personal protective equipment, to emergency procedures that must be followed by all employees. This study employs library research or literature review. The result is by improving the effectiveness of the OHS system, it is expected that the number of workplace accidents will be reduced, as well as the creation of a safe and healthy working environment, providing benefits not only for workers, but also for the entire community that uses rail transportation service.

Arena and (Re)Stabilization of Reog Bulkiyo Dance Cultural Production Salam, Aprinus; Maulana, Alfian
Jurnal Kawistara Vol 14, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/kawistara.92385

Contestation among traditional art performances, in the technology and information era, creates complex and diverse challenge to the dance of Reog Bulkiyo. In 1999, the dance had to be stopped following the regeneration and economical problem. Although Reog Bulkiyo has been performed again since 2009, the conditions which makes this dance can be produced is still inexplicable. This article attempts to explain why dance experiencing production and activity stagnation. Pierre Bourdieu’s cultural production theory is used to analyze this problem, while ethnographic qualitative is used as the method. This study found that Reog Bulkiyo dance is in the arena of traditional dance art which has a double-tiered structure. The first structure leads to popular culture, while the second structure leads to art culture. In the first structure, Reog Bulkiyo dance group uses relational capital with relatives, social and Islamic groups to survive in the midst of competition with other popular arts. The dance then gains a relationship with the academy and the state which provides relational, cultural, and symbolic capital in the form of granting intangible cultural heritage status. These two relations give Reog Bulkiyo dance group the opportunity to maintain its cultural production.

Analisis Beban Kerja Fisik dan Produktivitas Kerja pada Pekerja Proyek Bangunan RS X Nabila, Dini Salsa; Prahasti, Hanum; Delima, Delima; Adimayanti, Sarah; Tambunan, Rayhan Fadila; Maulana, Alfian; Astuty, Delfiriana Ayu
Malahayati Nursing Journal Vol 7, No 12 (2025): Volume 7 Nomor 12 (2025)
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/mnj.v7i12.23167

ABSTRACT Labor productivity is an important factor for business sustainability, but it is often affected by high physical workload. Excessive workload can lead to fatigue and poor performance. The purpose of this study was to examine the relationship between workers' physical workload and worker productivity at the construction site of Hospital X. The method used was a cross-sectional quantitative study. Data were collected using a structured questionnaire, whose validity and reliability were tested. Then the data were analyzed descriptively and using the Pearson correlation test. The results showed that most respondents were male (93.3%), aged ≤ 35 years and 36-55 years (48.3% each), had a high school education (76.7%), and had worked for less than 6 months (66.7%). Most workers experienced high physical workload (88.3%) and had a high level of work productivity (88.3%). The results of statistical tests showed a significant and inverse relationship between physical workload and productivity (r = -0.286; p = 0.027). This means that the higher the physical workload, the lower the level of worker productivity.productivity. Keywords: Physical Workload, Workers, Work productivity ABSTRAK Produktivitas tenaga kerja merupakan faktor penting untuk keberlanjutan. usaha, tetapi sering kali dipengaruhi oleh beban kerja fisik yang tinggi. Beban kerja yang terlalu banyak dapat menyebabkan kelelahan dan kinerja yang buruk. Tujuan dari penelitian ini adalah untuk menguji hubungan antara beban kerja fisik pekerja dan produktivitas pekerja di lokasi konstruksi Rumah Sakit X. Metode yang digunakan adalah studi kuantitatif potong lintang. Data dikumpulkan menggunakan kuesioner terstruktur, yang validitas dan reliabilitasnya diuji, Kemudian data tersebut dianalisis secara deskriptif dan menggunakan uji korelasi Pearson. Hasilnya menunjukkan bahwa sebagian besar responden adalah laki-laki. (93,3%), berusia ≤ 35 tahun dan 36-55 tahun (masing-masing 48,3%), berpendidikan SMA (76,7%), dan telah bekerja kurang dari 6 bulan (66,7%). Sebagian besar pekerja mengalami beban kerja fisik yang tinggi (88,3%) dan memiliki tingkat produktivitas kerja yang tinggi (88,3%). Hasil uji statistik menunjukkan adanya hubungan yang signifikan dan berbanding terbalik antara beban kerja fisik dan produktivitas (r = -0,286; p = 0,027). Artinya semakin tinggi beban kerja fisik, maka semakin rendah pula tingkat produktivitas pekerja. Kata Kunci: Beban Kerja Fisik, Pekerja, Produktivitas Kerja

Design of a Mobile-Based Attendance System Integrated with Android-Based Geolocator Simatupang, Aidil Akbar; Maulana, Alfian
JITCoS : Journal of Information Technology and Computer System Vol. 1 No. 1 (2025): Volume 1 Number 1, June 2025
Publisher : CV. Multimedia Teknologi Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65230/jitcos.v1i1.11

The development of information technology has significantly impacted various aspects of life, including employee attendance administration. This study aims to design a mobile-based attendance system integrated with geolocation on Android devices to enhance the efficiency and accuracy of attendance recording. The system utilizes geolocation technology to validate user locations in real-time, reduce data manipulation, and improve employee accountability. The system was developed using the System Development Life Cycle (SDLC) approach with the Waterfall model, which includes analysis, design, implementation, and testing using the Black-box method. Testing results indicate that all features—such as login, attendance recording, profile management, employee addition, and location validation—function as specified. The implementation of this system offers a modern solution for more transparent and effective attendance management. These findings are expected to serve as a reference for organizations seeking to adopt reliable digital attendance systems aligned with the demands of the information technology era. Future research is recommended to develop additional features such as facial recognition or integration with performance management systems

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