Article Per Year (5 Year)
p-Index From 2017 - 2022
0.444
P-Index
This Author published in this journals
All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Wiga : Jurnal Penelitian Ilmu Ekonomi
Firdaus, Iqbal
Unknown Affiliation
Astronomy Economics, Econometrics & Finance Energy Materials Science & Nanotechnology Physics Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PENGARUH CORPORATE SOCIAL RESPONSIBILITY TERHADAP KINERJA KEUANGAN Ludfi, Riswan; Firdaus, Iqbal
Wiga : Jurnal Penelitian Ilmu Ekonomi Vol. 7 No. 1 (2017): Maret 2017
Publisher : Institut Teknologi dan Bisnis Widya Gama Lumajang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.576 KB) | DOI: 10.30741/wiga.v7i1.332

Abstract

The aims of this research were to know : (1) The influence of CSR variables (employee, environment, community) as independent varables either partially or simultaneously towards Return on Assets (2) The influence of CSR variables(employee, environment, community) as independent varables either partially or simultaneously towards Tobin’s Q. The method of this research is multiple linear regression analysis. The research sample were taken from Corporate’s data on IDX through annual report and financial information from financial reports for manufacturers, developers, and miners (just typically pure trading corporates were not included) in the period 2010 to 2012 with the purposive sampling method. There were 95 of the companies that met the criteria and were accumulated for three years, so total of samples became 285 samples. The result of research showed that all of CSR variables gave positive significant influence simultaneously towards the dependent variables of ROA and Tobin’s Q. Partially, the variables of employees and community were positively significant influencing the dependent variable of ROA, and only employees as the independent variable had positive influence towards Tobin’s Q
Sintesis dan Karakterisasi Nanofiber Komposit PVA/SiO2 dari Silika Sekam Padi Menggunakan Metode Electrospinning Firdaus, Iqbal; Sembiring, Simon; Junaidi, Junaidi; Johandra, Andrean; Rifansyah, TB Ikhwan; Rahmadi, Rizky Ponco; Putra, Oki Ade
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 1 (2022): IJAP Volume 12 ISSUE 01 YEAR 2022
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i1.55730

Abstract

Telah berhasil dibuat membrane separator yang berpotensi diaplikasikan untuk baterai lihitum-ion, membrane separator digunakan untuk proses transfer ion dan mencegah terjadinya arus pendek. Dalam penelitian ini membrane separator PVA/SiO2 disintesis memggunakan metode electrospinning dengan variasi berat SiO2 (0, 0.6, 1.2, 2) wt%. SiO2 yang digunakan adalah hasil ekstraksi silika sekam padi. Pengaruh penambahan SiO2 pada PVA untuk meningkatkan karakteristik membrane diantaranya porositas, dan stabilitas pada suhu tinggi. Hasil membrane yang berhasil dibuat PVA, dan PVA/SiO2 membentuk serat nano dengan ukuran diameter serat semakin kecil ketika ditambahkan  SiO2 yaitu ~ 220 nm, ukuran diameter semakin kecil  meningkatkan porositas membrane dan meningkatkan kinerja membrane dengan stabilitas suhu 165 oC
Co-Authors Johandra, Andrean Junaidi Junaidi Ludfi, Riswan Putra, Oki Ade Rahmadi, Rizky Ponco Rifansyah, TB Ikhwan Simon Sembiring