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STUDI PERILAKU PELINDIAN TIMBAL DARI BIJIH GALENA NANGGUNG KABUPATEN BOGOR DALAM LARUTAN ASAM ASETAT DAN OKSIDATOR HIDROGEN PEROKSIDA Mubarok, Zaki; Yahya, Yahya
Metalurgi Vol 29, No 1 (2014): Metalurgi Vol.29 No.1 April 2014
Publisher : Pusat Penelitian Metalurgi dan Material - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.466 KB) | DOI: 10.14203/metalurgi.v29i1.271

Abstract

STUDI PERILAKU PELINDIAN TIMBAL DARI BIJIH GALENA NANGGUNG KABUPATENBOGOR DALAM LARUTAN ASAM ASETAT DAN OKSIDATOR HIDROGEN PEROKSIDA. Dalampaper ini, dipresentasikan hasil-hasil percobaan pelindian timbal dari bijih galena Nanggung Kabupaten Bogordalam larutan asam asetat dengan menggunakan oksidator hidrogen peroksida. Serangkaian percobaan pelindianagitasi pada tekanan atmosfer telah dilakukan untuk mempelajari pengaruh konsentrasi asam asetat, konsentrasihidrogen peroksida, temperatur dan kecepatan pengadukan terhadap persen ekstraksi Pb. Kinetika pelindian Pbdipelajari pada temperatur 30, 40 dan 50 °C dengan pendekatan model shrinking core untuk menentukankonstanta laju proses, pengendali laju dan energi aktivasi proses pelindian Pb. Hasil-hasil percobaanmenunjukkan bahwa ekstraksi Pb dari bijih galena dapat dilakukan dengan baik melalui pelindian bijih secaralangsung dalam larutan asam asetat menggunakan oksidator H2O2 pada tekanan atmosfer. Persen ekstraksi Pbtertinggi yaitu 92,3% diperoleh dari percobaan dengan konsentrasi asam asetat 3 molar, H2O2 0,5 molar,temperatur 50 °C dengan kecepatan pengadukan 200 rpm pada ukuran bijih -200 mesh. Konsentrasi asamperoksida harus dijaga pada level tertentu untuk mencegah terjadinya presipitasi timbal sulfat yangmengakibatkan penurunan persen ekstraksi timbal. Hasil studi kinetika menunjukkan bahwa laju pelindian Pbdari bijih galena dalam larutan asam asetat dan oksidator H2O2 terkendali oleh reaksi antarmuka dengan energiaktivasi 54,52 kJ/mol.
PERAN POLITIK PEREMPUAN MELALUI SINOMAN DI DESA GROBOG WETAN TEGAL DALAM PERSPEKTIF GENDER Mubarok, Zaki
PALASTREN Jurnal Studi Gender Vol 11, No 1 (2018): PALASTREN
Publisher : STAIN Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/palastren.v11i1.3444

Abstract

Sinoman dirumuskan sebagai tradisi saling membantu antar anggota masyarakat dalam aspek politik, sosial dan agama. Sinoman lazim dilakukan perempuan baik berupa pemberian materi atau pekerjaan nir transaksional. Dalam konteks politik pemilihan kepala desa, sinoman menjadi mekanisme vote gatter, kampaye, memberi dan menyajikan logistik selama pemilihan kepala desa. Meski berperan penting, perempuan tidak otomatis menjadi figur yang berada di tengah kekuasaan atau masuk dalam inti struktur kekuasaan. Sebaliknya, ia menjadi bagian luar dari sistem kekuasaan atau politik yang berjalan. Peran penting mereka dalam politik desa didasarkan pada semangat ibadah yang bersumber pada ajaran patuh kepada perintah suami atau laki-laki yang berkedudukan sebagai imam. Karena pilihan politik suami menjadi pilihan politik yang harus dipatuhi istri atau saudara perempuan lainnya. Peran perempuan dalam Sinoman memiliki pengaruh atas pembagian kekuasaan untuk suami atau saudara laki-lakinya di desa.
Ibadah Mengolah Sampah Di Desa Grobog Wetan Kecamatan Pangkah Kabupaten Tegal Mubarok, Zaki; Koidin, Mohammad
Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Vol 20, No 1 (2020)
Publisher : LP2M of Institute for Research and Community Services - UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.076 KB) | DOI: 10.21580/dms.2020.201.4806

Abstract

Having religion actually makes religious doctrine as an energy in solving the problems of humanity, one of them is the waste problem. The religious doctrine of the perfection of faith obtained by maintaining cleanliness must be realized by cooperating with multiple disciplines or other entities as an effort to create a clean and healthy society. The paradox of the society which is being busy with religious rituals, but neglecting the cleanliness of the environment continues until today, including in Grobog Wetan Village, Pangkah District, Tegal Regency. Initially this dedications was planned with the Almaghfiroh Foundation. However, in its development also with the Village Government, Youths, Fatayat, RT, RW and Nature Lovers Students.This dedication in dealing with the problem of garbage aims to bring up a paradigm of dealing with waste problems as a worshipping ritual, getting reward as in other rituals. It also makes waste as something which is close and can be treated as something economical. By using the society intervention method, the result of this service is a process in which the society developing a pattern of sorting and processing organic and inorganic waste. Organic waste is transformed into magot caterpillar food and inorganic waste is still in the process of being transformed into tradable goods. In addition, the fundamental achievement of this research-based dedication is the emergence of a new understanding for the society not to "hostile" waste, but to be close to the waste, which exists a daily life and eventually to "make friends" with waste. This service also recommends the village government to create a waste management budget on a larger scale. These achievements must also be interpreted and disseminated to the society as a form of worshipping.Beragama sejatinya menjadikan doktrin agama sebagai energy dalam memecahkan masalah kemanusiaan, salah satunya masalah sampah. Doktrin agama tentang kesempurnaan iman diperoleh dengan menjaga kebersihan harus direalisasikan dengan menggandeng berbagai disiplin atau entitas lain sebagai upaya mewujudkan masyarakat yang bersih dan sehat. Paradoks masyarakat sibuk ritual keagamaan namun abai dengan kebersihan lingkungan terus beralangsung hingga saat ini. Termasuk di Desa Grobog Wetan Kecamatan Pangkah Kabupaten Tegal. Awalnya pengabdian ini direncanakan bersama Yayasan Almaghfiroh. Namun dalam perkembangannya juga dengan Pemerintah Desa, Para Pemuda, Ibu-Ibu Fatayat, RT , RW dan Mahasiswa Pecinta Alam.Pengabdian dalam menangani masalah sampah ini bertujuan untuk memunculkan paradigma menangani masalah sampah sebagai ibadah, berpahala sebagaimana ibadah ritual lain. Juga menjadikan sampah sebagai sesuatu yang dekat dan bisa diperlakukan sebagai sesuatu yang ekonomis. Dengan menggunakan metode intervensi komunitas, hasil pengabdian ini berupa proses. Yaitu masyarakat mengembangkan pola pilah dan olah sampah organic dan an organic. Sampah organic ditransformasikan menjadi makanan ulat magot dan sampah an organic masih dalam tahap proses transformasi menjadi barang yang diperjual belikan. Selain itu, capaian mendasar dari pengabdian berbasis riset ini adalah munculnya pemahaman baru bagi masyarakat untuk tidak “memusuhi” sampah, melainkan dekat dengan sampah yang merupakan kenyataan dalam keseharian dan akhirnya “berteman” dengan sampah. Pengabdian ini juga merekomendasikan pemerintah desa untuk membuat anggaran penanganan sampah dalam skala yang lebih besar. Capaian-capaian ini pula harus dimaknai dan disemaikan kepada masyarakat sebagai bentuk ibadah.   
Indonesia Legal Analysis of IUU Fishing And Transnational Organized Fisheries Crimes: Loopholes and Proposed Measures Mubarok, Zaki
Indonesian Journal of International Law
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (760.761 KB)

Abstract

The fight against illegal fishing by the Ministry of Marine Affairs and Fisheries has taken off. When investigating Illegal, Unreported and Unregulated (IUU) fishing, related transnational crimes activities such as trafficking in persons, slavery and drugs are also uncovered. In spite of the robust efforts and prompt responses, some challenges persist in terms of the inadequacy of legal frameworks governing these problems. Thus, the adequacy of the legal domain is a significant factor in pursuing the Ministry’s mission. The legal framework plays a pivotal role in addressing IUU fishing and transnational organized fisheries crimes and in setting a mechanism to prevent further expansion of these activities. In developing an in-depth analysis of the nexus between IUU fishing and transnational organized crimes, the two dimensions of intertwined national and international legal frameworks need to be examined. This article attempts to examine the existing Indonesian legal framework to combat IUU fishing and fisheries crimes within the context of relevant national and international laws and provide a critical discussion of the interplay between IUU fishing and transnational organized crimes.
Legal Development in the Overcoming Overfishing in Indonesian Coastal Areas Roisah, Kholis; Rahayu, Rahayu; Yusliwidaka, Arnanda; Mubarok, Zaki; Buditama, Ajar
Journal of Indonesian Legal Studies Vol 8 No 2 (2023): Contemporary Issues on Law, Development, and Justice: Indonesian Context and Beyo
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jils.v8i2.69358

Abstract

Indonesia, as a vast island state surrounded by extensive seas, holds a strategic advantage in the maritime sector. The coastal areas, rich in resources, play an indispensable role in the lives of numerous Indonesians. Despite the abundance of resources, the well-being of the population faces uncertainties attributed to management challenges. A prominent issue exacerbating the decline in the coastal ecosystem and diminishing productivity is the phenomenon of overfishing. Characterized by the excessive extraction of fish beyond their capacity to replenish, overfishing poses a severe threat to coastal areas. This unsustainable practice is rooted in legal ambiguities, conflicts in authority, and the bio-geophysical degradation of resources within coastal zones. The detrimental consequences of overfishing necessitate immediate attention and intervention to preserve coastal ecosystems and secure the livelihoods of those reliant on them. Addressing these challenges, the focus of this research is on preventing the widespread occurrence of overfishing in coastal areas and mitigating the impacts of existing overfishing activities. The primary strategy proposed involves the development of a robust legal framework for the management of coastal areas. Through the establishment of clear legal guidelines, resolution of uncertainties, and mitigation of conflicts in authority, this research aims to lay the groundwork for sustainable and responsible practices in coastal resource management. The research aims to provide valuable insights that contribute to the enhancement of coastal area management, ultimately fostering ecological sustainability and improving the welfare of communities dependent on these vital resources. By delving into the complexities of coastal resource management, this study seeks to enrich the discourse surrounding sustainable practices, thereby facilitating informed decision-making and policy development in the quest for a harmonious coexistence between human communities and coastal ecosystems in Indonesia.
Influence of Ratings and Online Customer Reviews on Purchase Decisions in The Shopee Marketplace Mubarok, Zaki; Husaini, Fauzan; Prihandayani, Riska Dwi; Qolbi, Tazkiyah Ainul
Syari'ah Economics Vol 7 No 2 (2023): Islamic Economic Studies
Publisher : Fakultas Ekonomi dan Bisnis Islam, Universitas Islam Darussalam (UID) | Islamic University of Darussalam, Ciamis, Jawa Barat, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36667/se.v7i2.1981

Abstract

This study aims to examine the effect of customer ratings and reviews on purchase decisions on Shopee. This research used multiple linear regression to estimate the determinants of purchase decision on Shopee. Data was collected through a questionnaire and analyzed to test the relationship between variables. The descriptive verification method aims to describe whether the facts are true or not and explain the relationship between variables by collecting, processing, analyzing and interpreting data in statistical hypothesis testing. The results showed that partially, rating and customer reviews have a positive and significant effect on purchase decisions. At the same time, customer ratings and reviews simultaneously have a positive and significant effect on purchase decisions.
Motivation and Interest in Learning in Online Learning during the Covid-19 Pandemic in Yapis 02 Elementary School Manokwari Zahra, Siti Fatimahtun; Mubarok, Zaki; Darmawan, Syamsul
Budapest International Research and Critics Institute-Journal (BIRCI-Journal) Vol 4, No 4 (2021): Budapest International Research and Critics Institute November
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v4i4.3087

Abstract

This study aims to determine the motivation and interest in learning in online learning during the Covid-19 pandemic in students of SD Yapis 02 Manokwari. The research method used is descriptive qualitative research method because the problem is not clear, complex and dynamic and full of meaning, so qualitative data is more appropriate to use. The instrument in this research is the researcher himself. Data collection techniques by means of observation, in-depth interviews, and documentation. In the interview, the participants who will be involved are students of SD Yapis 02 Manokwari along with their parents, teachers, all of whom were selected based on certain criteria (purposive and snowball sampling). The student criteria include grade 4, 5 and 6 students who since the beginning of the pandemic have participated in online learning, with the consideration that they have understood the context of the questions asked in the interview. In addition to these criteria, students are also selected based on the ability to describe their thoughts and opinions. Data analysis techniques are carried out in line with the data collection process, carried out interactively through data reduction, data display, and verification. To maintain the credibility of the data, it is necessary to extend observations, increase persistence in research, triangulate sources, place and time, analyze negative cases and use reference materials.
Hubungan Family Support System terhadap Kemandirian Activity Of Daily Living Anak Tunagrahita Di Kota Semarang Mubarok, Zaki; Anggraini, Merry Tiyas; Noviasari, Nina Anggraeni
Medica Arteriana (Med-Art) Vol 4, No 1 (2022): Juni 2022
Publisher : University of Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/medart.4.1.2022.26-31

Abstract

Latar belakang: Tunagrahita dapat didefinisikan sebagai disabilitas mental karena mempunyai hambatan dalam perkembangan mental, keterbatasan dalam hal intelegensi, bahasa, sosial dan motorik. Peran keluarga diperlukan sebagai support system untuk menanamkan kemandirian dalam memenuhi aktifitas hidupnya untuk mencegah ketergantungan anak tunagrahita sehingga akan mencegah timbulnya berbagai penyakit sejak dini. penelitian ini bertujuan untuk menjelaskan hubungan peran keluarga sebagai support system terhadap aktifitas hidup (ADL) pada anak tunagrahita di kota Semarang.Metode: Penelitian menggunakan metode observasional analitik dengan pendekatan cross sectional. Sampel diambil memakai Teknik non probabbility sampling dengan consecutive sampling. Data penelitian ini diambil dengan menggunakan kuesinoer Perceived Social-family Scale dan kuesioner Indeks Barthel. Sampel adalah para murid tunagrahita di SLB Negeri Semarang tahun 2021 sebanyak 50 orang. Teknik analisis data menggunakan uji spearman rank.Hasil: Hasil uji korelasi spearman rank antara variabel Family support system terhadap variabel kemandirian Activity of daily living (ADL) pada anak tunagrahita menunjukan terselip hubungan diantara kedua variabel karena nilai p (<0,05). Hasil koefisien korelasi sebesar 0,854 menandakan korelasi yang sangat kuat diantara kedua variabel.Kesimpulan: Semakin besar family support system akan diikuti peningkatan kemandirian Activity of daily living (ADL) pada anak Tunagrahita di Kota Semarang.
Spesies Hemiptera pada Tanaman Kangkung (Ipomoea aquatica) di Kabupaten Ogan Ilir, Sumatera Selatan Novhela, Shelly; Liana, Liana; Febriani, Bella; Mubarok, Zaki; Zahir, M Ibrahim; Umayah, Abu; Gunawan, Bambang; Arsi, Arsi
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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

Abstract

Novhela S, Liana L, Febriani B, Mubarok Z, Zahir MI, Umayah A, Gunawan B, Arsi A. 2022. Hemiptera species on water spinach (Ipomoea aquatica) in Ogan Ilir Regency, South Sumatra. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 742-750. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Hemiptera species are insects that often found in water spinach (Ipomoea aquatica). The purpose of this study is to knowing the diversity of Hemiptera species in water spinach. This research method was carried out by field surveys in Timbangan Village, Sakatiga Village, and Tanjung Pering Village, Ogan Ilir Regency, South Sumatra. Data from the research on the diversity of Hemiptera insects on water spinach (Ipomoea aquatica) were analyzed descriptively. The results showed that there were four Hemiptera species found in water spinach. The four Hemiptera species include Anasa Tritis (true ladybug), Bothrogonia ferruginea (pucung father), Boisea trivitta,  and Gonocerus akutangulatus (box bugs). Based on the four species, three of them are insects that act as phytophages in the ecosystem of life, especially in the agricultural sector. While one other species is an insect that acts as a predator (natural enemy). So, the insects that are often found in water spinach plants (Ipomoea aquatica) are Hemiptera species insects that act as phytophagoes and predators. Suggestions that can be given from the results of this study are the need for more education and understanding of the community about the various Hemiptera species that found in water spinach, especially those that are pests in the villages of Scales, Sakatiga, and Tanjung Pering, Ogan Ilir Regency, South Sumatra.
SEBARAN POTENSI KONFLIK BUAYA MUARA DI KECAMATAN TANJUNG MUTIARA, KABUPATEN AGAM, SUMATERA BARAT Mubarok, Zaki; ., Ahyuni
JURNAL BUANA Vol 8 No 4 (2024)
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana/vol9-iss3/3984

Abstract

Human conflicts with crocodiles have become a problem that affects crocodile conservation. Scientific publications on crocodile attack cases in Indonesia are still scarce and need validation, thus mitigation efforts for conflicts are not yet optimal. Tanjung Mutiara Subdistrict is an area with the highest incidence of human-crocodile conflicts in West Sumatra, as it has a natural crocodile habitat directly bordering densely populated settlements and community plantations. This research aims to map the distribution of estuarine crocodiles and the potential for conflicts in surrounding settlements. Data processing was conducted using Maxent software, and environmental variables included distance from the river, distance from the coast, distance from plantations, land cover (shrubland), elevation, and temperature. The Maxent software prediction results indicate that the distance from the river is the most influential variable, with an AUC (Area Under Curve) value of 0.863. The output values' range, approaching 1, signifies better predictions. Settlements with activities within one kilometer from the river and coast have the highest potential for human-crocodile conflicts.