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All Journal MIIPS JURNAL PHOTON
Rahma Dona, Rahma
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Agriculture, Biological Sciences & Forestry Chemistry Education Nursing Physics Social Sciences

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PENGARUH ECONOMIC VALUE ADDED (EVA), MARKET VALUE ADDED (MVA) DAN ARUS KAS OPERASI TERHADAP RETURN SAHAM PERUSAHAAN LQ-45 Dona, Rahma; Ermawati, Wita Juwita
MIIPS Vol 11, No 2 (2010): Jurnal MIIPS
Publisher : MIIPS

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Abstract

Buying and selling shares in the capital market is one method to overcomeproblems of liquidity and as a means of investment for those who have excessfunds. Investment in capital markets is one of high liquidity category investments andconvertible (easily converted) so it is important for issuers to consider the interests ofcapital owners that is to maximize firm value.This study intended to determine how the value of Economic Value Added(EVA), Market Value Added (MVA), operating cash flow and stock return and theinfluence of EVA, MVA and operating cash flow on stock return in 33 companies LQ-45index period of August 2009-January 2010 at the BEI. As for investors can be used asrecommendation for investment.The results indicate that the companies have value of positive and negative EVA,positive and negative MVA, all positive operating cash flow, and positive, 0, andnegative stock returns. From the regression equation, EVA has a regression coefficientvalue 0.122, the regression coefficient of MVA has value – 0.227, and the regressioncoefficient of operating cash flow has value 0.221. Test results show that the value ofEVA, MVA, and operating cash flow have no effect significantly on stock returns. This isdue to the absence of capital market efficiency over the stock price, that investors havenot fully use the available information to analyze a particular companys stock. Thusstock prices that occurred, did not reflect actual corporate performance.
SINTESIS DAN UJI TOKSISITAS SENYAWA ANALOG KALKON TERSUBSTITUSI METOKSI Dona, Rahma; Zamri, Adel; Jasril, -
Sistem Informasi Vol 5 No 2 (2015): Jurnal Photon
Publisher : Fakultas MIPA dan Kesehatan Universitas Muhammadiyah Riau

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tumbuhan dalam jumlah yang relatif sedikit. Senyawa ini merupakan prekursor untuk biosintesis flavonoid dan isoflavonoid. Senyawa kalkon telah dilaporkan memiliki berbagai aktivitas biologis yang menarik seperti antimikrob, antitumor, antioksidan, antiinflamasi, antimalaria, dan antikanker. Aktivitas senyawa kalkon dipengaruhi oleh gugus α,β-tak jenuh dan substituen yang terdapat pada cincin aromatiknya. Pada penelitian ini, tiga analog kalkon tersubstitusi mono-metoksi pada cincin A aromatik dan cincin B aromatiknya telah disintesis menggunakan metode iradiasi microwave dengan katalis KOH dan pelarut etanol. Struktur setiap produk dikarakterisasi dengan spektroskopi UV-Vis, FTIR, 1H NMR, 13C NMR, dan HRMS. Uji toksisitas dilakukan menggunakan metode Brine Shrimp Lethality Test (BSLT). Berdasarkan hasil uji BSLT, ketiga senyawa tersebut berpotensi sebagai senyawa antikanker dengan nilai LC50<200 μg/mL.
Co-Authors Adel Zamri Fadhl, Haiyul Furi, Mustika Jasril Jasril Viryana, Tyasakti