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All Journal Edumatsains JFRES: Journal of Fiscal And Regional Economy Studies
Nurhasana
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Agriculture, Biological Sciences & Forestry Chemistry Economics, Econometrics & Finance Education Mathematics Physics Social Sciences

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Analisis Pendapatan Usaha Nelayan Tangkap Ikan TunaDi Kabupaten Manokwari Nurhasana; Achmad Rochani; Ketysia Imelda Tewernusa
JFRES Journal of Fiscal and Regional Economy Studies Vol. 4 No. 1 (2021): Journal of Fiscal And Regional Economy Studies (JFRES)
Publisher : Pusat Penelitian Pemberdayaan Fiskal dan Ekonomi Daerah (P3FED) Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36883/jfres.v4i1.51

Abstract

The purpose of his study aims to determine and analyze how much the income level of tuna fishing business is and what factors affect the level of tuna fishing business income in Manokwari Regency. The analytical method used is the quantitative descriptive analysis method with interview guides and questionnaires as instruments. Data analysis was performed using multiple linear regression analysis. The results showed that simultaneously and partially the variables of capital, length of time at sea, number of workers and experience at sea had a significant effect on the income of tuna fishermen in Manokwari Regency.
USE OF SENGGANI LEAVES AS AN ALTERNATIVE MATERIAL FOR PRINTER REFILL INK THAT IS LOW VOC (VOLATILE ORGANIC COMPOUND) ENVIRONMENTALLY FRIENDLY Trilia Ananta Pramita Sari; Rewan Jayadi; Rika Agustin; Putri Ramanda; Nurhasana; Eka Angasa
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5574

Abstract

This study aims to determine the content of senggani leaves and utilize senggani leaves as a raw material for printer refill ink. This can increase the utilization of senggani leaves into products that are low in VOC levels. The method used in this study the first test is done, the ink absorption rate test on HVS paper is done by using a medium such as paper by comparing the length of the absorption path ∆x with a time interval t during the absorption process. The next test is the ink performance test using the volume of aqueous solvent and comparing the quality of the ink obtained. The ink consists of 3 components, namely pigment, solvent, and thickening agent the pigment used in this study is carbon obtained from the carbonization of senggani leaves, 98% alcohol is used as a carbon solvent as a thickener and adhesive in the form of gum arabic. The variation of carbon used is 1 gram, 2 grams, and 3 grams, while the volume of aquadest, the volume of alcohol, and gum arabic mass is made fixed that is sequentially 15 mL, 3 mL, and 3.5 grams. The test results of senggani leaf ink with the best composition resulted in solvent and mass variation values by the standard. Meanwhile, from the results of the print test, the resulting printer ink has provided good print and color results as well as commercial ink and does not easily fade if exposed to water. Keywords: senggani leaf, ink, pigment.
Co-Authors Achmad Rochani Eka Angasa Hude, M. Darwis Ketysia Imelda Tewernusa Putri Ramanda Rewan Jayadi Rika Agustin Trilia Ananta Pramita Sari