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PENGARUH PERBANDINGAN KARBON AKTIF DARI TEMPURUNG KELAPA DAN TULANG SAPI PADA PENGOLAHAN LIMBAH CAIR DOMESTIK
Jurnal Inovasi Teknik Kimia
Vol 10
, No 1
(2025)
Limbah Biomassa yang berasal dari pertanian seperti tempurung kelapa dan tulang sapi yang cukup berlimpah selama ini hanya dibuang begitu saja sehingga menyebabkan bertumpuknya limbah padat yang menganggu lingkunga, sehingga perlu adanya usaha untuk mengolah limbah tersebut.. Tujuan penelitian ini adalah untuk mengolah limbah tempurung kelapa dan tulang sapi menjadi produk yang bermanfaat dan bernilai ekonomis menjadi karbon aktif. Proses pembuatan karbon aktif terdiri dari 3 tahapan yaitu karbo...
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PENGARUH WAKTU PERENDAMAN SABUT KELAPA DALAM EKSTRAK DAUN JATI MUDA DENGAN FIKSATOR KAPUR TOHOR (CaO) TERHADAP INTENSITAS DAN TAHAN LUNTUR WARNA KAIN PADA PEWARNAAN KAIN KATUN
Jurnal Inovasi Teknik Kimia
Vol 10
, No 1
(2025)
“Penggunaan pewarna alami pada tekstil dapat ditingkatkan dengan memanfaatkan sumber daya alam seperti daun jati muda dan sabut kelapa, sehingga juga dapat meminimalkan penggunaan pewarna sintetis yang dapat membahayakan kesehatan manusia dan lingkungan. dari penelitian ini adalah untuk mengetahui bagaimana pengaruh perendaman sabutkelapa dalam ekstrak daun jati muda terhadap intensitas warna dan ketahanan luntur warna kain katun setelah dicuci dengan sabun, serta pengaruh kapur tohor (CaO) seba...
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Integration of Texture and PCA Information from Sentinel-1 SAR Data for Land Cover-Analysis using Random Forest Classifier Method in Sidoarjo Regency, Indonesia
Bioresita, Filsa
; Larastika, Trisya Sayyidah Fithri
; Taufik, Muhammad
; Hayati, Noorlaila
; Putri Taslyanto, Chelsea Alfarelia
Forum Geografi
Vol 39
, No 1
(2025)
Land cover has an important role in modelling to spatially analyse natural phenomena that occur on the earth's surface. The identification of land cover can also be used to determine the availability of green space and the percentage of built-up land in an area. Through this information, it can help the government to formulate policies related to development planning in an area. Currently, land cover identification can be done with remote sensing technology, generally using optical imagery. Howe...
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Volcanic Pumice Rafts at Sea: Buoyancy and Infiltration with Micro-particles
Forum Geografi
Vol 39
, No 1
(2025)
Pumice, characterised by its high vesicularity, often forms pumice rafts as it floats on water. Although the vast majority of research has focused on understanding the behavior of pumice rafts, studies on the water infiltration properties of pumice remain scarce. Moreover, the influence of underwater particles, such as microplastics in the ocean, on water infiltration through the pores of pumiceous materials is still unclear. Therefore, this study investigates the water infiltration properties o...
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SINTESIS BIODIESEL DARI MINYAK DEDAK PADI DENGAN KATALIS PADAT DARI LIMBAH PENGOLAHAN BAUKSIT (RED MUD)
Jurnal Inovasi Teknik Kimia
Vol 9
, No 4
(2025)
Red mud, a solid waste from extraction process of bauxite mineral in Alumina Industry, was utilized as a solid catalyst for biodiesel production from rice bran oil. Red mud catalyst was prepared at calcination temperature of 800 °C and calcination time of 4 hours. The performance of this catalyst will be evaluated in terms of molar ratio of oil to methanol to, reaction temperature, and catalyst concentration. The results show that biodiesel yield is increasing by increasing molar ratio of methan...
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Gambaran Tindakan Pengambilan Keputusan Karir pada Siswa Kelas XII SMA Negeri 1 Sutojayan
Sinar Dunia: Jurnal Riset Sosial Humaniora dan Ilmu Pendidikan
Vol 4
, No 1
(2025)
Adolescence is a time when we, as students, are required to have the ability to make career decisions. Career selection is an important part of the decision-making process in the life of every individual. The purpose of this study was to determine the description of career decision-making actions in class XII students of SMA Negeri 1 Sutojayan. The research method used by the author is qualitative. The number of subjects used in this study was 5 students. This study concludes that, in general, s...
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Urban Violent Crime Dynamics in Kuala Lumpur and Putrajaya: Utilizing Spatial Temporal Techniques
Redzuan, Mohd Sofian
; Masron, Tarmiji
; Yusuf, Adibah
; Junaini, Syahrul Nizam
; Kimura, Yoshinari
; Barawi, Mohamad Hardyman
; Salleh, Mohamad Suhaidi
; Rainis, Ruslan
; Ahmad, Azizul
Forum Geografi
Vol 39
, No 1
(2025)
This paper investigates the patterns of violent crime in Kuala Lumpur and Putrajaya between 2015 and 2020 using advanced spatial analysis techniques, including Spatial Autocorrelation, Standard Deviational Ellipse (SDE), and Mean Centre (MC). The study analyzes the spatial distribution and temporal dynamics of violent crimes, tracks shift in crime hotspots and examines the influence of socio-economic factors on these patterns. Findings reveal that violent crimes predominantly occur in the late a...
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Hubungan antara Dukungan Keluarga dengan Distress Pasien Diabetes Mellitus Tipe 2
Jurnal Ventilator: Jurnal riset ilmu kesehatan dan Keperawatan
Vol 3
, No 1
(2025)
Type 2 Diabetes Mellitus which is increasingly common is often accompanied by complications and psychological problems such as stress. The level of stress in diabetes patients can be influenced by family support which plays a crucial role in improving their quality of life. This study aims to examine the relationship between the level of family support and stress levels in patients with type 2 diabetes mellitus. The method used in this study is a quantitative approach with a cross-sectional rese...
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DAMPAK ELECTRONIC WORD OF MOUTH TERHADAP MINAT PEMBELIAN MAKANAN MENGGUNAKAN GO-FOOD DENGAN KEPERCAYAAN MEREK SEBAGAI FAKTOR MEDIASI
Jurnal Manajemen Sosial Ekonomi
Vol 4
, No 1
(2025)
This research was conducted with the aim of determining the impact of Electronic Word of Mouth on demand for food purchases using Go-Food with brand trust as an intervening variable. The sample in this study was 100 respondents obtained through a sampling technique using the simple random sampling method. The data collection method uses a questionnaire which is announced to respondents after which the data results are processed using SEM (Structural Equation Modeling) which is used in the SmartP...
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Exploration of Identification at Each Phase to Advance Productivity Towards Sustainable Practices
Advance Sustainable Science, Engineering and Technology
Vol 7
, No 2
(2025)
This study analyzes the productivity of tower cranes in high-rise building construction projects in Indonesia, focusing on sustainable practices and advanced techniques. The rapid growth of infrastructure has heightened competition in the construction sector, making efficiency essential. Tower cranes are key to accelerating project timelines and reducing costs, but their productivity can differ between theoretical specifications and actual field conditions. Using a quantitative descriptive metho...
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