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All Journal Journal of Aceh Physics Society ProBisnis : Jurnal Manajemen
Anju Bherna D Nainggolan
Universitas Efarina
Humanities Computer Science & IT Economics, Econometrics & Finance Industrial & Manufacturing Engineering Physics Social Sciences

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Coating radiation waves based on BaFe12O19/ZnO from natural red sand on X-ray radiation exposure in the Laboratory of Efarina Hospital in the era of the COVID-19 pandemic Veryyon Harahap; Anju Bherna. D. Nainggolan
Journal of Aceh Physics Society Volume 11, Number 1, January 2022
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v11i1.21871

Abstract

Pada Era Pandemi Covid-19 penggunaan teknologi dan alat radiologi sudah menjadi bagian dari kebutuhan rumah sakit. Alat radiologi tersebut yang berfungsi untuk perawatan (terapi), diagnosa dan pembunuhan penyakit tanpa melakukan operasi. Tetapi disamping kemudahan-kemudahan yang diberikan ternyata alat tersebut juga memberikan efek negatif bagi tubuh yang terkena paparan radiasi. Dalam penelitian ini akan dibuat material Penyerap Gelombang Radiasi berbasis BaFe12O19/ ZnO dari Pasir Merah Alam dengan rasio (50 : 50) wt% antara matriks dan filler. Komposit BaFe12O19/ ZnO telah dilakukan dengan metode Wet Milling dengan media toluene. Barium M-Ferrit sebagai matriks dan ZnO sebagai filler yang digunakan sebagai bahan baku utama untuk pembuatan komposit. Dari hasil uji X-Ray Diffraction (XRD)  pada serbuk BaFe12O19 sebagai matrik menunjukkan bahwa fasa yang terbentuk single face dan struktur kristal hexagonal memiliki parameter kisi a=5,929 Ǻ dan c= 23,41 Ǻ space group (P 63/m m c) Sampel komposit BaFe12O19/ZnO yang terstruktur heksagonal (file JCPDS No. 39-1433). Hasil analisis permukaan menggunakan Scanning Electron Magnetic (SEM) menunjukkan bahwa Komposit  memiliki ukuran partikel yang paling halus dan kecil, Hasil Karakterisasi VSM komposit adalah (Ms = 39.40 emu/g, (Mr = 17,20 emu/g, Hcj = 2728 Oe. Hasil true density komposit BaFe12O19/ZnO adalah 5.386364 g/cm3
The Influence of Work Discipline, Work Ethics and Work Environment on Employee Performance at the Regional Company Pasar Horas Jaya, Pematangsiantar City Santi Rohdearni Panjaitan; Diana Florenta Butarbutar; Hadi Panjaitan; Anju Bherna D Nainggolan; Ben Setiawan Barus
ProBisnis : Jurnal Manajemen Vol. 13 No. 2 (2022): October: Management Science
Publisher : Lembaga Riset, Publikasi dan Konsultasi JONHARIONO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62398/probis.v13i2.58

Abstract

This study aims to see the effect of work discipline, work ethic and work environment on employee performance, either partially or simultaneously at PD Pasar Horas Jaya, Pematangsiantar City. The type of research used is quantitative. The population in this study were employees of the PD Pasar Horas Jaya office, Pematangsiantar City, amounting to 31 people and the determination of the number of samples in this study was by the sampling method. The data source of this research is primary data by using research instrument in the form of a questionnaire. The data collection method used is survey research. This study uses multiple linear regression analysis for statistical analysis and the regression model has been tested first in the classical assumption test. The results of the study stated that the partial test showed that work discipline had a significant positive effect on employee performance at PD Pasar Horas Jaya Pematangsiantar City, the partial test showed that work ethic had a significant positive effect on employee performance at PD Pasar Horas Jaya Pematangsiantar and partially tested the work environment had a positive effect. significant effect on employee performance at PD Pasar Horas Jaya Pematangsiantar Together, work discipline, work ethic and work environment have a significant effect on employee performance at PD Pasar Horas Jaya Pematangsiantar.
The Influence of Digital Marketing on Sales Results of Traditional Traders at Horas Market Pematangsiantar Santi Rohdearni Panjaitan; Ben Setiawan Barus; Anju Bherna D. Nainggolan; Dermawan Perangin-angin
ProBisnis : Jurnal Manajemen Vol. 14 No. 4 (2023): August: Management Science
Publisher : Lembaga Riset, Publikasi dan Konsultasi JONHARIONO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62398/probis.v14i4.253

Abstract

The purpose of this study is to determine whether there is an influence of digital marketing on the sales of traditional traders in the Horas market Pematangsiantar. The number of samples in this study were 98 respondents with an error rate of 10%. The sampling technique used is non-probability sampling. The sampling method used accidental sampling technique. Data collection was obtained from the results of distributing questionnaires to traditional traders of the Horas market Pematangsiantar. The research method used is a quantitative approach with questionnaires and managing data using SPSS. The analytical tools used are validity and reliability tests. Data analysis in this study used simple linear regression analysis. The results of simple linear regression analysis show that digital marketing variables have a positive and significant effect on sales results. The results of this study indicate that the higher the digital marketing it will affect the sales results of traditional traders in the Horas market Pematangsiantar.
Co-Authors Ben Setiawan Barus Ben Setiawan Barus Dermawan Perangin-angin Diana Florenta Butarbutar Hadi Panjaitan Santi Rohdearni Panjaitan Santi Rohdearni Panjaitan Veryyon Harahap