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Reni Febriani, Reni
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Religion Arts Humanities Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Public Health Social Sciences Other

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Perancangan Sistem Manajemen Proyek Menggunakan Critical Path Method (CPM) di PT Adhi Putra Bangun Perkasa Kania, R; Febriani, Reni; Maharani, Desti; Hendra, Yul; Rakhmat, Edy
Jurnal Ilmiah Sains dan Teknologi Vol. 9 No. 2 (2025): Jurnal Ilmiah Sains dan Teknologi
Publisher : Teknik Informatika Fakultas Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5555/6gfnap11

Abstract

 The reporting process is only through direct conversation, hampering evaluation, as there is no written record.. This research aims to design a management system, especially in project planning, that allows data entry, scheduling, and reporting in real time. The system design method used is the Waterfall Method with visual modelling using the Unified Modeling Language (UML). This system also utilizes the Critical Path Method (CPM) in helping project scheduling. The results of system testing using black box testing show that the output displayed is a web-based project management system that can perform needs planning and project reporting in real time. The conclusion obtained is that with the use of this system, recording project data no longer requires the use of paper, and data can be stored automatically, as well as project reporting that can be accessed in real time to facilitate project evaluation.
AKTIVITAS ANTIBAKTERI DAN TOKSISITAS MINYAK SERAI DAPUR (Cymbopogon citratus) DENGAN PERLAKUAN PEMEKATAN PADA SUHU BERBEDA Febriani, Reni; Rohaeti, Eti; Wahyuni, Wulan Tri
Analit : Analytical and Environmental Chemistry Vol. 6, No. 02 October (2021) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v6i2.2021.p168-179

Abstract

Minyak atsiri serai (Cymbopogon citratus) dapur telah dipergunakan secara luas di berbagai industri, diantaranya sebagai agen antibakteri. Pada penelitian ini dievaluasi aktivitas antibakteri dan toksisitas minyak serai dapur yang dipekatkan pada suhu berbeda. Toksisitas dievaluasi melalui uji brine shrimp lethality test (BSLT), sementara uji antibakteri dilakukan terhadap bakteri Staphylococcus aureus dan S. epidermidis dengan metode difusi dan dilusi. Komponen kimia yang terdapat dalam minyak serai dianalisis menggunakan kromatografi gas spektrometri massa (GC-MS). Hasil yang diperoleh menunjukkan berdasarkan uji BSLT diperoleh nilai lethal concentration 50 (LC50) sampel minyak serai dapur semua perlakuan < 1000 ppm dengan LC50 terendah sebesar 16,53 ± 2,82 ppm. Nilai konsentrasi hambat minimun (KHM) dan konsentrasi bunuh minimum (KBM) minyak serai dapur terhadap S. aureus umumnya lebih rendah dibanding terhadap S. epidermidis. Aktivitas antibakteri minyak serai dapur terhadap S. aureus terkategori sangat kuat dengan nilai KHM dan KBM terendah ditunjukkan oleh minyak serai tanpa perlakuan pemekatan yaitu sebesar 1250 dan 2500 ppm terhadap S. aureus. Komposisi senyawa kimia utama dalam minyak serai dapur berdasarkan analisis GC-MS ialah sitral, neral dan β-myrcenehttp://dx.doi.org/10.23960/aec.v6.i2.2021.p168-179
Co-Authors Abdul Aziz Alwizar Anges, Caney Babay Suhendri Baslayn, Dihan Ahmad Budiman Tampubolon Budiman, Ramdani Cahyo Sasmito Elrika Erliani Eti Rohaeti Herlina Herlina Hidayanti, Nur Ibrahim Ibrahim Juliansyah Juliansyah Kania, R Kania, Raden Lestari, Factrisia Maharani, Desti Mardiah Astuti Meliani Nadeak, Hendrison Oktarina, Nining Rakhmat, Edy Rosnita . Sari Dewi Solihati, Tifani Intan Wulan Tri Wahyuni yul Hendra