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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Perencanaan Pembangunan
Peter Davey
Griffith University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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The Contribution of Natural Resources on Economic Welfare In Indonesia Palupi Anggraeni; Peter Daniels; Peter Davey
Jurnal Perencanaan Pembangunan: The Indonesian Journal of Development Planning Vol. 1 No. 3 (2017): December 2017
Publisher : Ministry of National Development Planning Republic of Indonesia/Bappenas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1316.979 KB) | DOI: 10.36574/jpp.v1i3.20

Abstract

The objective of this research is to examine the relationship between natural resource abundance and economic welfare at the national level of Indonesia. Four variables of institutional quality, investment level, education level, and industry value added are considered in the study as the moderating variables between economic welfare and natural resource rents. This study found that the results are not robust to conclude that the rent generated from natural resources is contributing to the economic welfare in Indonesia. Nevertheless, this study found there are three moderating variables that can become a support to strengthen the relationship between natural resources and economic welfare, these are institutional quality through improvement in the political stability, strengthening the accountability, stringent the regulations, and enforcing the rule of law; primary completion level; and industry value added.
Synthesis, Characterization and Determination of Weight Poly Molecule (Lactic acid) Saefuddin Saefuddin; Peter Davey
Jurnal Penelitian Pendidikan IPA Vol 9 No 7 (2023): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i7.2900

Abstract

Experiments have been successfully carried out to react with lactic acid and 1,4-butanediol, tin (II) chloride dihydrate (SnCl2.2H2O), chloroform, methanol, liquid nitrogen, nitrogen gas, and silicone oil at various concentrations. The objective exists to synthesize polylactic acid by forming polylactic acid diol (PLA-OH) via a direct polycondensation reaction of lactic acid and 1,4-butanediol in a glass reactor following a specific reaction scheme. Synthesis was carried out using different amounts of reagents according to the predetermined mole ratio of lactic acid (AL) and 1,4-butanediol (BD). The FTIR, 1H NMR, and GPC analyses that characterized the PLA-OH revealed its physicochemical characteristics. The FTIR and 1H NMR characterization results show new absorption peaks and a shift in PLA-OH absorption peaks. It indicates that a bond has been formed from the reaction between lactic acid molecules and 1,4-butanediol to produce PLA-OH. From the spectrum analysis, it can be concluded that the structure of the synthesized PLA-OH has four different proton environments (there are four different peaks in the spectrum). The peaks originate from the protons in methylene (-OCH2CH2CH2CH2O), internal methine (-O-CH-), and methine at the end of the PLA-OH chain, as well as proton peaks in methyl (H3C-). The characterization results with GPC showed that the tendency to increase Mn PLA was directly proportional to the increasing amount of lactic acid in the PLA chain
Co-Authors Palupi Anggraeni Peter Daniels Saefuddin Saefuddin