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All Journal Aquacoastmarine Jurnal Penelitian Ekonomi Manajemen dan Bisnis
Novita Sari Siboro
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Decision Sciences, Operations Research & Management Social Sciences Other

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ANALISIS KANDUNGAN LOGAM BERAT TIMBAL (Pb) PADA IKAN PELAGIS KECIL YANG DIDARATKAN DI PPS BELAWAN KECAMATAN MEDAN BELAWAN SUMATERA UTARA Novita Sari Siboro; Hasan Sitorus; Indra Lesmana
AQUACOASTMARINE Vol 4, No 4 (2016): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.503 KB)

Abstract

The development of the technology has driven the growth of industry, on the one side can increase economic growth, but on the other side can lead to destruction of the environment especially marine organisme that fish due to the negative impact of the waste it generates. The objective of the the research are to analize the heavy metal concentration of Pb in sea water and small pelagic fishes (Decapterus sp, Rastrelliger sp and Sardinella fimbriata) landed at PPS Belawan and analysis the correlation of heavy metal Pb in sea water and body of fishes. The research was conducted at Medan Belawan Subdistrict, North Sumatera Province. Analysis of heavy metal Pb content in sea water and body of fishes was carriedout at the Medan Research and Industry Standarization Laboratory. Result showed that the range concentration of Pb in sea water was 0.17 ppm to 0.20 ppm, while in body of fish of Decapterus sp was 0.50 ppm to 1.18 ppm, Rastrelliger sp was 0.24 ppmto 0.97 ppm and Sardinella fimbriata was 0.23 ppm to 0.50 ppm. Compared to Regulation of National Standarization on 2004 the concentration of heavy metal Pb in body fishes had exceeded the level standard of 0.2 ppm. Based on the regresion analysis the correlation (r) of heavy metal contentration in sea water was very strong to heavy metal concentration in body fishes with value 0.73.Keywords : Plumbum, Sea Water, Small Pelagic Fish, Belawan
Pengaruh Indeks Harga Konsumen terhadap Inflasi di Kota Medan Sumatera Utara Tahun 2024 Silvia Diva Sari; Joy Stevani Simangunsong; Novita Sari Siboro
Jurnal Penelitian Ekonomi Manajemen dan Bisnis Vol. 4 No. 2 (2025): Jurnal Penelitian Ekonomi Manajemen dan Bisnis
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jekombis.v4i2.5009

Abstract

This study aims to analyze the effect of the Consumer Price Index (CPI) on the inflation rate in Medan City during 2024. Inflation is a key macroeconomic indicator for assessing regional economic stability, and CPI serves as the primary tool to monitor changes in the prices of goods and services consumed by households. This research employs a quantitative approach using monthly time series secondary data sourced from the Central Statistics Agency and Bank Indonesia. The analysis techniques include classical assumption tests (normality, multicollinearity, heteroscedasticity, and autocorrelation) and simple linear regression. The results show that partially, CPI has no significant effect on inflation, with a significance value of 0.136. Simultaneously, the variables also show no significant influence, although the R² value of 18.8% indicates that CPI can explain a small portion of the variation in inflation. These findings suggest that other factors beyond CPI may play a more dominant role in influencing inflation in Medan City. The implications of this study are expected to provide input for local government in formulating more comprehensive inflation control policies based on more relevant macroeconomic variables.
Co-Authors Hasan Sitorus Indra Lesmana Joy Stevani Simangunsong Silvia Diva Sari