Garuda - Garba Rujukan Digital

TINJAUAN KINETIKA PROSES EKSITASI PADA PENENTUAN UNSUR DENGAN SPEKTROGRAFI EMISI NOOR ANIS KUNDARI; SAHAT SIMBOLON; WIWIEN ANDRIYANTI
Jurnal Forum Nuklir JFN Vol 2 No 1 Mei 2008
Publisher : BATAN

Penelitian ini bertujuan untuk menentukan persamaan kecepatan reaksi yang terjadi padaproses eksitasi dalam analisis boron dan kadmium dengan spektrografi emisi. Hal inidimaksudkan agar diperoleh suatu tambahan informasi ilmiah yang teljadi pada proseseksitasi, sehingga dapat dimanfaatkan untuk memperbaiki teknik analisis menggunakanspekrografi emisi. Data yang dievaluasi adalah analisis boron dan kadmium dalam U308dengan pengemban sulingan campuran Ga203, LiF, dan AgCl. Sebelum dikumpulkan datauntuk keperluan penentuan persamaan kecepatan reaksi, dilakukan optimasi konsentrasipengemban sulingan. Konsentrasi pengemban sulingan terbaik digunakan untuk prosesanalisis. Dari hubungan intensitas dengan konsentrasi pengemban didapatkan konsentrasipengemban yang paling baik adalah 5%. Hubungan kadar boron dan kadmium yangdidapatkan saat eksitasi yang divariasi waktu digunakan untuk menghitung konsentrasisehingga diperoleh hubungan konsentrasi dengan waktu. Dengan metode diferensialdiperoleh diperoleh bahwa reaksi itu mengikuti orde satu. Selanjutnya data diolah denganmenggunakan metode integral, sehingga didapat untuk persamaaan kecepatan reaksiboron yaitu -fa = - dCa = O,066CA' mg dan untuk kadmium yaitu:dt g.sdCed 1mg- rCd = - -- = 0,068 CA -.'dt g.sKata kunci: spektrografi emisi, persamaan kecepatan reaksi, eksitasi

THE USE OF DIGITAL IMAGE PROCESSING IN ANALYSIS OF BORON, CADMIUM IN THORIUM OXIDE WITHOUT CARRIER DISTILATION WITH EMISSION SPECTROGRAPH METHOD Sahat Simbolon; Aryadi Aryadi; Muhtadan Muhtadan
GANENDRA Majalah IPTEK Nuklir Volume 15 Nomor 1 Januari 2012
Publisher : Website

THE USE OF DIGITAL IMAGE PROCESSING IN ANALYSIS OF BORON, CADMIUM IN THORIUM OXIDEWITHOUT CARRIER DISTILLATION EMISSION SPECTROGRAPH METHOD. The use of digital imageprocessing in direct determination elements of highly absorption cross-section of thermal neutron such as B andCd in nuclear fuel ThO2 without carrier distillation was described. Working and counter electrode should bemodified because volume of the sample was larger than the traditional one. Firstly, analysis of B and Cd in ThO2was recorded by X-ray film for thorax and then was proceeded by mini digital camera. All files in mini digitalcamera were transferred to computer and read by digital image processing of Matlab software. It was found thatall line spectra became Gaussian shape. Since couple of camera position and lightening system had not beendone successfully yet, therefore, quantitative analysis could not been done yet, meanwhile qualitative analysishad already been done by analysis spectra after image processing. It is easier to analysis B and Cd qualitativelyuse of image processing than densitometer instrument.Keywords : Thorium Oxide, Carrier Distillation, Image Processing, Digital Camera

Constructing Eh-pH Diagrams of Plutonium by Using Its Thermodynamics Properties Sahat Simbolon
Widyanuklida Widyanuklida, Volume 4 Nomor 1-2, Agustus 2001
Publisher : BATAN

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ABSTRACT Eh-pH diagrams of Plutonium under standard temperature and pressure (STP) condition are constructed. The stability domain of water is described based on redox reaction of water with oxygen and hydrogen. Two pair lines which are almost paralel to each other are found. Redox reaction of Plutonium poduces four Nerst equations; each equation is represented by one line and one vertical line as a result of non redox reaction. The length of each line depends on other lines. There are two pair lines which are overlapped each other if the concentration of each species equals to 10-9 M. It is also described Eh-pH diagrams for Plutonium with different concentrations. ABSTRAK Telah dibuat diagram Eh-pH Plutonium di dalam udara dengan tekanan dan suhu standar. Daerah stabilitas air ditentukan berdasarkan reaksi redoks air - oksigen dan air - hidrogen. Didapatkan dua pasang garis lurus yang hampir sejajar satu sama lain. Reaksi redoks dari Plutonium menghasilkan 4 persamaan Nerst, tiap persamaan digambarkan dalam bentuk garis dan satu garis tegak akibat reaksi non redoks. Panjang setiap garis sangat bergantung pada garis - garis lainnya. Didapatkan dua pasangan garis yang saling tumpang - tindih kalau konsentrasi masing-masing spesiesnya sama dengan 10-9 M. Digambarkan juga Ehl-pH diagram untuk konsentrasi spesies Plutonium yang tidak sama.

Perbandingan Pelarutan Cuplikan Dengan Metoda Konvensional dan Microwave Sahat Simbolon
Widyanuklida Widyanuklida Volume 3 Nomor 1, Februari 2000
Publisher : BATAN

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ABSTRAK Diterangkan kelemahan sistem pelarutan cuplikan dengan metoda konvesional: membutuhkan waktu yang cukup banyak, merusak lingkungan, dan membutuhkan banyak perhatian selama pelarutan dilakukan, memerlukan lemari asam khusus untuk cuplikan biologi dan dan botani. Sebaliknya pelarutan cuplikan padat dengan metoda maju (tungku microwave) hanya membutuhkan waktu yang singkat, tidak merusak lingkungan, dan tidak membutuhkan banyak perhatian. ABSTRACT It is clarified that the weakness of conventional method in sample dissolution are time consuming, environmental destruction, and it requires a lot of attention during dissolution, as well as a need of a special fumes hood for biological and botanical samples. On the other hand, dissolution of solid samples using microwave method is not time-consuming and environment-friendly. This method does not need much attention such as in conventional method.

Analysis of Uranyl Carbonate Complexes in an Open and Close Environmental System by Analytical Chemistry Sahat Simbolon
Widyanuklida Widyanuklida, Volume 3 Nomor 2, Agustus 2000
Publisher : BATAN

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ABSTRACT Variation of C032- ion concentration from CO2 gas originated from atmosphere, in natural water in an open and close system versus pH of the solution is described. Reaction between U022+ cation with CO32- anion is also described by using calculation, comparison of each species of uranyl carbonate complexes to its total values. Each mol fraction of uranyl corbonate complex versus pH of the solution is calculated using Lotus 123 release 2.4. It is found that uranyl carbonate complexes species in natural water which is slightly acid in an open system is simpler than that in a close system. On the other hand, uranil carbonate complexes species in natural water which is slightly base is simpler in an open system than that in a close system. ABSTRAK Diterangkan perubahan konsentrasi ion CO32- di dalam air alam pada lingkungan terbuka dan tertutup berasal dari gas CO2 yang terdapat di udara terhadap pH larutan. Reaksi antara kation UO22+ dengan anion CO32- juga diterangkan dengan menggunakan perhitungan, perbandingan antara masing-masing spesies kompleks uranil karbonat terhadap nilai totalnya. Perangkat lunak Lotus 123 release 2.4 digunakan untuk menghitung masing-masing molfraksi dari masing-masing spesies uranil karbonat terhadap pH larutan. Didapatkan bahwa spesies kompleks uranil karbonat di dalam air alam pada lingkungan terbuka pada kondisi asam lebih sederhana dibandingkan dengan di dalam air alam pada lingkungan tertutup. Sebaliknya kompleks uranil karbonat di dalam air pada lingkungan terbuka dan dalam suasana basa kandungannya lebih sederhana daripada di dalam air alam pada lingkungan tertutup.

Pengaruh Kepemimpinan Visioner, Motivasi, dan Kompetensi terhadap Budaya Kerja dan Komitmen serta Implikasinya pada Kinerja Dosen Sahat Simbolon
Kontigensi : Jurnal Ilmiah Manajemen Vol 5 No 2 (2017): Kontigensi: Jurnal Ilmiah Manajemen
Publisher : Program Doktor Ilmu Manajemen, Universitas Pasundan, Indonesia

The aim of this research purpose is to know, to analyze and review (1) visionary leadership, work motivation, lecturer’s competency, work culture, work commitment and lecturer’s performance, (2) The great of influence contribution visionary leadership, work motivation, lecturer’s competency toward work culture and work commitment, (3) The great of influence contribution work culture and commitment toward lecturer’s performance. This research was conducted using descriptive methods and verifycative. The sampling technique used cluster random sampling, with population as much 3.412 lecturer’s and sample number as much 251 respondents. The research has conducted on private colleges in Medan North Sumatera Province. The analysis tool used is the Path Analysis with its calculation use SPSS 20. This research result has shown that: (1) Condition visionary leadership, work motivation, lecturer competency, work culture, work commitment states in high category, except lecture performance in high enough category. (2). Relation closeness of independent variable X1 with X2, and X2 with X3 are having strong relation level, variable X1 with X3 are having strong enough relation level. While highest relation closeness as much 0.652 for variable X1 and X2, and lowering as much 0.514 for variable X1 and X3. Intervening variable relation closeness Y1 with Y2, having stronger relation level that is 0.991. (3). There is significant influence relation from all of independent variables toward work culture, with influence number as much 64.7%. (4). There is significant influence from all of independent variables toward work commitment, with influence number as much 61.3%. (5). There is significant influence from all of intervening variables toward lecture performance, with influence number as much 87.6%.

ANALISIS PENGARUH MOTIVASI KERJA DAN KOMPETENSI TERHADAP KINERJA KARYAWAN BAGIAN PRODUKSI PADA PT. GROWTH ASIA MEDAN Sahat Simbolon
Jurnal Manajemen Akuntansi Dan Administrasi Bisnis Vol 2 No 1 (2018): Jurnal Ilmiah SMART
Publisher : Sekolah Tinggi Manajemen Bisnis (STMB) MultiSmart

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The purpose of this research is to analyze the influence of work motivation, and competence to employee performance of production at PT Growth Asia Medan. The research was conducted on the employee of PT Growth Asia Medan with population of 320 people. Samples were taken as many as 80 people. The data were collected by using questionnaire method and documentation technique. Data were analyzed by using descriptive method and multiple linear regression analysis. Partial test result (t test) proves that motivation have positive but not significant effect to employee performance, while competence have positive and significant influence to employee performance of PT Growth Asia Medan. Simultaneous test (F test) shows that the motivation of work and competence simultaneously have a significant effect on employee performance. The coefficient of determination (R2) of 0.703 means that 70.3% of employee performance of PT Growth Asia Medan is influenced by work motivation and work competence of employees, while the remaining 29.7% is influenced by other variables not examined in this research, for example leadership variable, work commitment, work culture, work environment, compensation, and so forth. Leaders need to pay attention to job performance, giving bonus, direction, and improvement of work motivation to employees.

ANALISIS PENGARUH KEPEMIMPINAN VISIONER, BUDAYA ORGANISASI, DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN PT. PUNDI MAS BERJAYA MEDAN Sahat Simbolon
Jurnal Manajemen Akuntansi Dan Administrasi Bisnis Vol 4 No 2 (2020): Jurnal Ilmiah SMART
Publisher : Sekolah Tinggi Manajemen Bisnis (STMB) MultiSmart

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The study aims to describe the effecf of visionary leadership, organizational behavior, and work environtment on employee work performance at PT. Pundi Mas Berjaya Medan. This research was conducted for 5 (five) months, start from May 2019 to September 2019. This research use non probability sampling method. The respondents of this research are all employee at PT. Pundi Mas Berjaya Medan which amounted to 72 (seventy two) employees. The instrument is used a questionnaire to collect data from visionary leadership variable, organizational behavior variabel, work environtment variable, and work performance variable. Data analysis technique used is validity test, reliability test, descriptive analysis, multicolinearity test, normality test, multiple linear regression analysis, multiple linear correlation coefficient test, partial hypothesis test ot t test, simultaneous hypothesis test or F test, and calculation of coefficient of determination. The result of descriptive analysis visionary leadership variable, organizational behavior variabel, work environtment variable, and work performance variable are in good category at PT. Pundi Mas Berjaya Medan. Based on partial analysis, visionary leadership, organizational behavior and work environtment have a positive and significant effect on employee work peformance at PT. Pundi Mas Berjaya Medan. Simultaneously, visionary leadership, organizational behavior, and work environment have a positive and significant influence on employee work performance at PT. Pundi Mas Berjaya Medan. The contribution of visionary leadership, organizational behavior and work environtment variable to improve the employee work performance variable is 0,822 or 82,2 %, while rest of 0,178 or 17,8% influenced by other variable not examined by writer in this research, such as work discipline, motivation, and work satisfaction. Keywords : visionary leadership, organizational behavior, work environment, work performance

Analysis of the Relationship Between Development of Teacher’s Pedagogic Competence Through Work Group Effectiveness Muthia Mutmainnah; Muhammad Subandi; Ilham Arief; Sahat Simbolon; Suharyatun Suharyatun
Jurnal Pendidikan Tambusai Vol. 7 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Pengembangan Kompetensi Pedagogik melalui KKG merupakan wadah pembinaan oleh pembina bagi guru untuk meningkatkan kompetensinya dalam melaksanakan pembelajaran. Namun berdasarkan hasil Uji Kompetensi Guru, nilai kompetensi pedagogik sangat rendah. Oleh karena itu, KKG harus mampu menjadi wadah pengembangan kompetensi pedagogik guru. Penelitian ini bertujuan untuk mendeskripsikan pengembangan kompetensi pedagogik melalui KKG di salah satu sekolah swasta di Provinsi DKI Jakarta. Penelitian ini menggunakan pendekatan kualitatif deskriptif. Sumber data diambil dengan cara purposive sampling dan snowball sampling. Pengumpulan data dilakukan dengan wawancara, observasi, dan studi dokumen. Proses analisis data meliputi reduksi data, penyajian data, dan penarikan kesimpulan. Adapun menggunakan triangulasi data untuk memverifikasi keakuratan data. Hasil penelitian yang dilakukan dalam KKG di salah satu sekolah swasta di Provinsi DKI Jakarta, telah terlaksana dengan baik. Secara khusus adalah sebagai berikut: kegiatan pengembangan kompetensi pedagogik guru melalui KKG dan manfaat pengembangan kompetensi pedagogik guru melalui KKG.

ANALISIS PENGARUH MOTIVASI KERJA DAN KOMPETENSI TERHADAP KINERJA KARYAWAN BAGIAN PRODUKSI PADA PT. GROWTH ASIA MEDAN Sahat Simbolon
Jurnal Manajemen Akuntansi Dan Administrasi Bisnis Vol 2 No 1 (2018): Jurnal Ilmiah SMART
Publisher : Sekolah Tinggi Manajemen Bisnis (STMB) MultiSmart

Show Abstract | Download Original | Original Source | Check in Google Scholar

The purpose of this research is to analyze the influence of work motivation, and competence to employee performance of production at PT Growth Asia Medan. The research was conducted on the employee of PT Growth Asia Medan with population of 320 people. Samples were taken as many as 80 people. The data were collected by using questionnaire method and documentation technique. Data were analyzed by using descriptive method and multiple linear regression analysis. Partial test result (t test) proves that motivation have positive but not significant effect to employee performance, while competence have positive and significant influence to employee performance of PT Growth Asia Medan. Simultaneous test (F test) shows that the motivation of work and competence simultaneously have a significant effect on employee performance. The coefficient of determination (R2) of 0.703 means that 70.3% of employee performance of PT Growth Asia Medan is influenced by work motivation and work competence of employees, while the remaining 29.7% is influenced by other variables not examined in this research, for example leadership variable, work commitment, work culture, work environment, compensation, and so forth. Leaders need to pay attention to job performance, giving bonus, direction, and improvement of work motivation to employees.

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