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Reduksi Ion Cu(II) Menggunakan Karbon Aktif dari Sekam Padi Teraktivasi Fisika dan Kimia Eka Purnawan; Abrar Muslim; Nasrullah Razali; Muhammad Zaki; Hesti Meilina; Azwar Azwar
Jurnal Serambi Engineering Vol 5, No 3 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i3.2149

This research proposed a method to produce activated carbon from rice husk by carbonation process, physical activation and chemical activation using NaOH. The performance of activated carbon was tested by batch experiments in which the adsorption system contained 1 g of rice husk activated carbon in 100 mL of artificial wastewater with initial concentration of Cu(II) ion being 148.26 mg/L, initial pH 6, at 27 oC and 1 atm to determine the efficiency of reducing Cu(II) ion over the contact time and presence of stirring on chemical activation. The results showed that the efficiency of reducing Cu(II) ion by rice husk activated carbon increased exponentially with increasing contact time with a maximum value of 74.33% at 90 minutes of contact time. The results also showed that stirring on chemical activation increased the efficiency of Cu(II) ion reduction by 14.94%. Adsorption kinetics studies showed that Cu(II) ion reduction followed the pseudo-second order adsorption equation with the adsorption capacity of 10.18 mg/g and adsorption rate constant of 0.0013 g/mg.min for rice husk activated carbon without stirring in the chemical activation. Stirring in the chemical activation.increased the capacity and rate of adsorption constant to 12.07 mg/g and 0.0052 g/mg.min, respectively.

OPTIMASI PROSES KONVERSI BIODIESEL DARI MINYAK JARAK DENGAN BIOKATALIS LIPASE CANDIDA SP - Salmyah; - Syahiddin; Muhammad Zaki
Jurnal Teknologi Vol 14, No 2 (2014): Jurnal Teknologi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v14i2.243

The research on the enzymatic synthesis of biodiesel from castor oil has been done. Some of the variables studied were the comparison of methanol and oil (X1), the amount of lipase enzyme (X2) and the reaction time (X3). The mathematical model that describes the relationship between the yield and the dependence variables was developed. According to the research, the yield of biodiesel obtained was in the range of 60% to 98%. The optimum conversion process was in the ratio methanol and oil of 5:1. Furthermore, the addition of 1 ml of enzyme and the reaction time of 12 hours produce 94% yield of biodiesel. Finally, the composition of the biodiesel was analyzed using Chromathography Mass Spectrometry, where palmitic acid 3.95% area, linoleic acid 7.14% area, 77.61% oleic acid area, and stearic acid 8.97% area was achieved

EVALUASI PERATURAN DAERAH NOMOR 6 TAHUN 2015 MENGENAI PENGENDALIAN MENARA TELEKOMUNIKASI DI KOTA PEKANBARU TAHUN 2020 Muhammad Zaki; Wan Asrida
Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Vol. 9: Edisi II Juli - Desember 2022
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik Universitas Riau

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Telecommunications Tower is a technological development that becomes a necessity for the community that cannot be separated from communication tools, so that there is an increase in development. In Regional Regulation No. 6 of 2015 concerning the arrangement and control of telecommunications towers in Article 8, it is known that the control of telecommunications towers includes: 1. Control of the construction of telecommunication towers. 2. Control of the operation of telecommunications towers. Several towers in Pekanbaru City are still under construction that are not in accordance with the telecommunication tower construction zone. It is very dangerous for buildings around the tower. In controlling the operation of the tower there are security, safety, and architecture. Meanwhile, in Pekanbaru City, there are several towers whose management control is not in accordance with Perda No. 6 of 2015. The purpose of this study is to describe the evaluation of regional regulation number 6 of 2015 in controlling the construction of telecommunication towers and controlling the operation of telecommunication towers. The theoretical concept used is the CIPP model evaluation theory (Context, Input, Process, and Product) by Daniel Stufflebeam. This type of research is descriptive qualitative. Data collection techniques were carried out by interviews and documentation. The results of this study are that in controlling the operation of this telecommunications tower, it is not in accordance with existing regulations, for example there are still towers that should be forcibly demolished, in fact there are still standing firmly close to the surrounding buildings, whether human resources are still lacking knowledge towards the construction of telecommunication towers where security and safety should be the main thing that must be done. Keywords: Control, Telecommunication Tower, Evaluation

PELAKSANAAN TUGAS BAGIAN LINEN DEPARTEMENT HOUSKEEPING HOTEL TJOKRO KOTA PEKANBARU Muhammad Zaki; Mariaty Ibrahim
Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Vol. 10: Edisi I Januari - Juni 2023
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik Universitas Riau

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Increasing amount traveler influential to existence of hotels. In Pekanbaru, an increase amount visitor Also happened at Tjokro Hotel Pekanbaru. this _ influential Also to enhancement amount visiting guests _ And stay. So from it, Housekeeping Department on linen section of Tjokro Hotel Pekanbaru. Study This use method descriptive qualitative for analyze problem based on data collection in the form of observation, interview deep, and documentation. implementation task covers carry out sorting and counting linen, distributing linen, carrying out inventory of linen, repair of damaged linen, receiving clothes uniform employee, save all linens. For whole from results observation and interview, data is withdrawn conclusion say that implementation task Housekeeping Department at the linen section yet fully walk with existing standards. Keywords: Hotel, Housekeeping Department, Linen Section, Implementation Task

Analisis Tujuan Hukum Terhadap Putusan Mahkamah Agung Tentang Penolakan Nafkah Madhiyah Anak (Studi Putusan Mahkamah Agung No.608/K/Ag/2003) Moh. Agung Laksono Kholid; Muhammad Zaki; Iskandar Syukur
Al Maqashidi : Jurnal Hukum Islam Nusantara Vol. 5 No. 2 (2022): Al Maqashidi : Jurnal Hukum Islam Nusantara
Publisher : UNIVERSITAS NAHDLATUL ULAMA SUNAN GIRI

Nafkah madhiyah anak merupakan nafkah terdahulu yang dilalaikan atau tidak dilaksanakan oleh ayah (mantan suami) kepada anaknya sewaktu anak tersebut belum dewasa dan mandiri. Penelitian ini merupakan hasil analisis mengenai putusan Mahkamah Agung Nomor.608/K/AG/2003 tentang penolakan nafkah madhiyah.penelitian ini akan membahas mengenai tinjauan tujuan hukum terhadap putusan Mahkamah Agung No.608/K/AG/2003 tentang penolakan gugatan nafkah madhiyah anak. Jenis penelitian ini adalah penelitian kualitatif dalam bentuk penelitian kepustakaan atau disebut dengan library research. Sumber data primer dalam penelitian ini adalah putusan Mahkamah Agung Nomor.608/K/AG/2003 dan sumber data sekundernya adalah buku, jurnal dan literatur yang berhubungan dengan topik penelitian. Pada penelitian ini menggunakan analisis teori tujuan hukum Gustav Redbruch. Hasil dari penelitian ini dapat disimpulkan bahwa dasar hukum nafkah sebagaimana diatur di dalam Hukum Positif dan Hukum Islam tidak membahas secara khusus mengenai nafkah madhiyah ini. Pertimbangan Hakim dalam Putusan Mahkamah Agung No. 608/K/AG/2003 tentang Penolakan Nafkah Madhiyah adalah bahwa kewajiban ayah memberi nafkah kepada anaknya adalah lil intifa’, bukan li-tamlik, padahal jika dilihat dari sisi kemaslahatan dan keadilan hakim dapat menggunakan pertimbangan lain yang memang sesuai dengan keadaan sebenarnya yaitu terbukti disebabkan oleh ketidakmampuan seorang ayah. Bahwa pertimbangan hakim dalam mengambil keputusan dalam perkara Mahkamah Agung Nomor 608 K/AG/2003 mengenai penolakan nafkah madhiyah tersebut menciderai nilai-nilai tujuan hukum atau tidak sesuai dengan tujuan keadilan dalam hukum sebagaimana yang dikonsepkan oleh Gustav Radbruch. Sedangkan jika ditinjau dari teori maslahah mursalah pertimbangan hakim dalam mengambil keputusan tidak memenuhi syarat-syarat yang harus ada dalam menjadikan maslahah mursalah sebagai hujjah.

Analisis Manajemen Layanan Teknologi Informasi Perpustakaan SMK Negeri 5 Palembang Menggunakan Framework ITIL Muhammad Zaki; Tata Sutabri
JSAI (Journal Scientific and Applied Informatics) Vol 6 No 2 (2023): Juni
Publisher : Fakultas Teknik Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jsai.v6i2.5256

This study aims to analyze the maturity level of library system service management at SMK Negeri 5 Palembang and provide recommendations to achieve the expected maturity level. Data obtained from interviews and direct observation of system users and respondents were determined using the RACI diagram. From the results of observations it was found that in the services provided by the library system, books were often found that did not have a storefront or storage stock but were still recorded in the system, besides that the speed of accessing the system was slow, alumni data was still recorded in the system which should have been deleted when the student graduated because basically this system is only intended for members who are still active in the school environment. The maturity level of library system services has never been measured, so it is not yet known whether the system service management is in accordance with the vision and mission to be achieved by the school. The measurement uses the ITIL Version 3 framework with the Service Operation domain. From the results of distributing questionnaires to respondents consisting of students, teachers and librarians, it was found that the maturity level of the library system at SMK Negeri 5 Palembang is at 2.79 which means it is at level 3, namely defined. While the expected maturity level is level 4, namely managed, GAP analysis is worth 1.20. recommendations are given to the library to be able to reach the level of expectations and be able to overcome the problems found. Keywords: Library system, SMK Negeri 5 Palembang, Maturity Level, ITIL V3, Service Operations

Studi penentuan lokasi budidaya kerapu menggunakan keramba jaring apung di perairan Timur Simeulue Syahrul Purnawan; Muhammad Zaki; T.M. Asnawi; Ichsan Setiawan
Depik Vol 4, No 1 (2015): APRIL 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Abstract. Groupers are of considerable economic value in southeast Asia. Cage culture is considered as the proper technology to maximize the sustainable biomass production in a unit area. This research assesses a site selection approach for net-cage grouper mariculture in the eastern coastal area of Simeulue Island, namely Sambai, Kuta Batu and Pulau Bengkalak. Data collection focused on 7 biophysical site capability parameters i.e.: current flow, temperature, water clarity, bottom depth, pH, salinity, dissolved oxygen. Suitability analysis identified all stations was categorized as a very appropriate and appropriate conditions for the fish cage location.Keywords: grouper; mariculture; fish cage; SimeulueAbstrak. Kerapu merupakan komoditas unggulan dan memiliki permintaan pasar yang tinggi di daerah Asia Tenggara. Keramba jaring apung (KJA) dianggap sebagai teknologi yang tepat untuk meningkatkan biomassa budidaya di suatu wilayah. Penelitian ini bertujuan untuk mengkaji kesesuaian lokasi penempatan KJA di wilayah pesisir timur Pulau Simeulue yaitu Sambai, Kuta Batu dan Pulau Bengkalak. Kajian data difokuskan pada tujuh parameter biofisik yaitu arus, suhu, kecerahan, kedalaman perairan, pH, salinitas, dan oksigen terlarut. Analisis kelayakan menunjukkan seluruh stasiun dikategorikan sebagai layak dan sangat layak untuk lokasi budidaya KJA.Kata kunci: Kerapu; marikultur; KJA; Simeulue

Studi penentuan lokasi budidaya kerapu menggunakan keramba jaring apung di perairan Timur Simeulue Syahrul Purnawan; Muhammad Zaki; T.M. Asnawi; Ichsan Setiawan
Depik Vol 4, No 1 (2015): APRIL 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.1.2365

Abstract. Groupers are of considerable economic value in southeast Asia. Cage culture is considered as the proper technology to maximize the sustainable biomass production in a unit area. This research assesses a site selection approach for net-cage grouper mariculture in the eastern coastal area of Simeulue Island, namely Sambai, Kuta Batu and Pulau Bengkalak. Data collection focused on 7 biophysical site capability parameters i.e.: current flow, temperature, water clarity, bottom depth, pH, salinity, dissolved oxygen. Suitability analysis identified all stations was categorized as a very appropriate and appropriate conditions for the fish cage location.Keywords: grouper; mariculture; fish cage; SimeulueAbstrak. Kerapu merupakan komoditas unggulan dan memiliki permintaan pasar yang tinggi di daerah Asia Tenggara. Keramba jaring apung (KJA) dianggap sebagai teknologi yang tepat untuk meningkatkan biomassa budidaya di suatu wilayah. Penelitian ini bertujuan untuk mengkaji kesesuaian lokasi penempatan KJA di wilayah pesisir timur Pulau Simeulue yaitu Sambai, Kuta Batu dan Pulau Bengkalak. Kajian data difokuskan pada tujuh parameter biofisik yaitu arus, suhu, kecerahan, kedalaman perairan, pH, salinitas, dan oksigen terlarut. Analisis kelayakan menunjukkan seluruh stasiun dikategorikan sebagai layak dan sangat layak untuk lokasi budidaya KJA.Kata kunci: Kerapu; marikultur; KJA; Simeulue

Studi penentuan lokasi budidaya kerapu menggunakan keramba jaring apung di perairan Timur Simeulue Syahrul Purnawan; Muhammad Zaki; T.M. Asnawi; Ichsan Setiawan
Depik Vol 4, No 1 (2015): APRIL 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.1.2365

Abstract. Groupers are of considerable economic value in southeast Asia. Cage culture is considered as the proper technology to maximize the sustainable biomass production in a unit area. This research assesses a site selection approach for net-cage grouper mariculture in the eastern coastal area of Simeulue Island, namely Sambai, Kuta Batu and Pulau Bengkalak. Data collection focused on 7 biophysical site capability parameters i.e.: current flow, temperature, water clarity, bottom depth, pH, salinity, dissolved oxygen. Suitability analysis identified all stations was categorized as a very appropriate and appropriate conditions for the fish cage location.Keywords: grouper; mariculture; fish cage; SimeulueAbstrak. Kerapu merupakan komoditas unggulan dan memiliki permintaan pasar yang tinggi di daerah Asia Tenggara. Keramba jaring apung (KJA) dianggap sebagai teknologi yang tepat untuk meningkatkan biomassa budidaya di suatu wilayah. Penelitian ini bertujuan untuk mengkaji kesesuaian lokasi penempatan KJA di wilayah pesisir timur Pulau Simeulue yaitu Sambai, Kuta Batu dan Pulau Bengkalak. Kajian data difokuskan pada tujuh parameter biofisik yaitu arus, suhu, kecerahan, kedalaman perairan, pH, salinitas, dan oksigen terlarut. Analisis kelayakan menunjukkan seluruh stasiun dikategorikan sebagai layak dan sangat layak untuk lokasi budidaya KJA.Kata kunci: Kerapu; marikultur; KJA; Simeulue

Gerakan Pencegahan Stunting Pada Balita Bersama Mahasiswa Kukerta Universitas Riau Di Desa Kota Baru, Kecamatan Tapung Hilir, Kabupaten Kampar Marnelia Marnelia; Winda Br Simatupang; Tedi Ramadani; Tiara Zulva; Dinda Aulia Rahmi; Pianti Azirah; Romadhani Romadhani; Jannatul Ma’wa; Masythah Aini; Muhammad Zaki; Rizky Febriansyah Siregar
Jurnal Bima : Pusat Publikasi Ilmu Pendidikan bahasa dan Sastra Vol. 1 No. 3 (2023): September : Jurnal Bima : Pusat Publikasi Ilmu Pendidikan bahasa dan Sastra
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/bima.v1i3.192

Stunting is a condition where a child's height is lower than the height according to his age, which is caused by long-term malnutrition in the first 1,000 days of life (HPK). Apart from nutritional factors, stunting is also caused by a lack of understanding among the public, especially mothers with young children, regarding the problem of stunting. The aim of this community empowerment is to prevent stunting through community participation in monthly village activities by holding posyandu for toddlers and children of pregnant women in Kota Baru village. The method of implementing the activity is community participation in posyandu activities providing vitamin A. The conclusion of this research is that the stunting prevention movement through posyandu activities by providing vitamin A to children under five and providing complementary breast milk food to pregnant women can improve the community. awareness of the importance of nutritious food for children to prevent stunting. Regarding government programs related to stunting, Kukerta University students in Riau are collaborating with the Kota Baru Village Government to continue government programs by implementing monthly programs in the form of posyandu operations as a form of the government's efforts to prevent stunting. . The results of the implementation of posyandu activities carried out by Kukerta Riau University students were two activities, posyandu for toddlers and posyandu for pregnant women. Activities carried out include providing additional food for pregnant women and vitamin A supplements for toddlers.

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