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All Journal Jurnal Riset Kimia Innovative: Journal Of Social Science Research
Yuliani, Putri
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Humanities Chemistry Computer Science & IT Law, Crime, Criminology & Criminal Justice Public Health Other

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Pengaruh Kepuasaan Kerja Terhadap Kinerja Karyawan PT Gramedia Karawang Yuliani, Putri; Febriani, Marcella; Patrick, Vionn Orianna; Susanti, Susanti; Wijaya, M. Adhimawan
Innovative: Journal Of Social Science Research Vol. 4 No. 4 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i4.13593

Abstract

Penelitian ini memiliki tujuan untuk mengkaji bagaimana pengaruh kepuasan kerja terhadap kinerja karyawan di PT Gramedia Karawang. Kepuasan kerja adalah aspek penting dalam menghasilkan lingkungan kerja yang positif dan produktif, serta mempunyai efek langsung pada kinerja karyawan. Penelitian ini menerapkan metode pendekatan kuantitatif dengan metode survei. Data diperoleh dengan cara pengisian kuesioner oleh karyawan PT Gramedia Karawang. Metode regresi linier digunakan untuk menganalisis pengujian hubungan antara variabel kepuasan kerja dan kinerja karyawan. Penelitian ini menunjukan terdapatnya hubungan positif yang signifikan antara kepuasan kerja dan kinerja karyawan. Karyawan yang merasa puas dengan pekerjaan mereka umumnya menunjukkan kinerja yang lebih unggul, produktivitas yang lebih tinggi, serta memiliki komitmen yang lebih kuat terhadap perusahaan.
Pemanfaatan Ekstrak Daun Sirih Hijau (Piper Betle Linn.) sebagai Capping Agent dalam Green Synthesis Spinel Ferit ZnFe2O4 untuk Remediasi Fenol dalam Air dan sebagai Anti Bakteri Rahmayeni, Rahmayeni; Yuliani, Putri; Putri, Yulia Eka; Stiadi, Yeni
Jurnal Riset Kimia Vol. 15 No. 1 (2024): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v15i1.685

Abstract

The spinel ferrite material ZnFe2O4 was synthesized using a green synthesis approach by the hydrothermal method. In the synthesis, 2M NaOH was used as a mineralizer and betel leaf extract with varying volumes of 1, 3, 5, and 7 mL as a capping agent, then continued with calcination at 500, 600, and 700°C. Several devices, such as XRD, FT-IR, SEM-EDX, DRS-UV-Vis, and VSM, were used to characterize the synthesized ZnFe2O4 material. The pattern of XRD indicated that the ZnFe2O4 material has a cubic structure, where the increase in crystal size was after calcination. The Fourier Transform Infra-Red (FT-IR) spectrum shows the Fe-O interaction at wave numbers 427-417 cm-1, which is located on the octahedral side, while the Zn-O interaction at wave numbers 534-510 cm-1, which is located on the tetrahedral side in spinel ferrite structure. From the DRS UV-Vis spectrum pattern and band gap values, it was found that the material absorbs light in the visible region. Scanning Electron Microscope (SEM) images show that the morphology of the synthesized material is circular. The Vibrating Sample Magnetometer (VSM) hysteresis curve shows that the synthesized ZnFe2O4 has paramagnetic properties. The synthesized ZnFe2O4 material has photocatalytic activity towards phenolic compounds with a degradation percentage reaching 62.2%, and this material is active as an antibacterial with an inhibition area of 14.4 for S. aereus bacteria.
Co-Authors Febriani, Marcella Patrick, Vionn Orianna Susanti Susanti Wijaya, M. Adhimawan Yeni Stiadi Yulia Eka Putri, Yulia Eka