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All Journal CALYPTRA : Jurnal Ilmiah Mahasiswa Universitas Surabaya Jurnal Dimensi Pratama Teknik Sipil Civil Engineering Dimension Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)
Fransisca Wijaya
Mahasiswa Program Studi Teknik Sipil Universitas Kristen Petra Surabaya
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Education Engineering Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering

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ANALISIS KADAR MERKURI (Hg) DALAM SEDIAAN HAND BODY LOTION WHITENING PAGI MEREK X, MALAM MEREK X, DAN BLEACHING MEREK X YANG TIDAK TERDAFTAR PADA BPOM Wijaya, Fransisca
CALYPTRA : Jurnal Ilmiah Mahasiswa Universitas Surabaya Vol 2, No 2 (2013): CALYPTRA : Jurnal Ilmiah Mahasiswa Universitas Surabaya
Publisher : University of Surabaya

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Abstract – X brand morning whitening body lotion, X brand night whitening bodylotion, and X brand bleaching unregistered to National Agency of Drugs andFoods Controls (BPOM) are widely used for skin whitening. This research wascarried out to analyze mercury (Hg) level which could possibly be found in thepreparations. Mercury (Hg) should not be used as skin whitening since it can beaccumulated in the body in the long run and eventually can be toxic and damagebody organs. Organoleptic test was conducted using miscibility test got fromPharmaceutics The Science of Dosage Form Design to determine emulsion typesof each preparation. The results showed that the preparations used had emulsiontype of oil in water (o/w). The mercury analysis used the method adopted from2005’s AOAC (Official Methods of Analysis of AOAC International). The studyusing ICPS (Inductively Coupled Plasma Spectrometer) showed linearity resultswith r = 0.9993 and Vxo = 2.02%; wave length used was ? = 253.652 nm; LLOD(Lower Limit of Detection) and LLOQ (Lower Limit of Quantitation) values were0.25 ppm and 0.84 ppm; CV (Coefficient of Variation) for each preparation was0%; 0.28%; 0.26%; recovery % value for mercury (Hg) in each preparation rangefrom 80.30-101.0%; 80.5-98.5%; 80.25-98.5%. the overall findings implied thatthis method meets the requirements in terms of linearity, selectivity, precision,LLOD, LLOQ, and accuracy.
KRITISI DESAIN PSEUDO ELASTIS PADA BANGUNAN BERATURAN 6- DAN 10-LANTAI DENGAN DENAH PERSEGI PANJANG DI WILAYAH 2 PETA GEMPA INDONESIA Wijaya, Fransisca; Widjojo, Liske; Muljati, Ima; Lumantarna, Benjamin
Jurnal Dimensi Pratama Teknik Sipil Vol 1, No 1 (2012)
Publisher : Jurnal Dimensi Pratama Teknik Sipil

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Pseudo elastis merupakan alternatif dalam perencanaan bangunan dengan mekanisme keruntuhan partial side sway. Mekanisme ini menggunakan konsep bahwa distribusi gaya geser tersebar merata pada seluruh kolom sampai kolom plastis mengalami pelelehan, lalu kelebihan gaya geser dialihkan pada kolom elastis. Oleh karena itu, beberapa kolom didesain tetap elastis selama terkena gempa dengan cara memperbesar gaya rencana akibat gempa menggunakan suatu Faktor Pengali, sedangkan balok dan beberapa kolom lainnya diperbolehkan mengalami sendi plastis. Metode ini berbeda dengan metode desain kapasitas dimana seluruh kolom didesain terhadap balok-balok yang merangkanya. Tujuan penelitian ini adalah untuk menguji asumsi distribusi gaya geser dalam konsep desainPseudo elastis, serta memeriksa apakah partial side sway mechanism dapat terjadi dengan desain Pseudo elastis pada bangunan beraturan 6- dan 10-lantai dengan denah persegi panjang di wilayah 2 Peta Gempa Indonesia. Kriteria desain yang digunakan adalah konfigurasi kolom perimeterdidesain sebagai kolom elastis, dimensi kolom eksterior dan interior sama, serta tidak menggunakan rasio tulangan minimum pada seluruh kolom. Pengujian asumsi distribusi gaya geser dasar dan mekanisme keruntuhan bangunan ditinjau dengan analisis dinamis time history nonlinear. Hasil penelitian menunjukkan bahwa asumsi distribusi gaya geser dalam desain Pseudo elastis tidak benar, sertapartial side sway mechanism tidak terjadi karena kolom interior mengalami fraktur.
Application of Modified-Partial Capacity Design Method on 6- and 15-story Square Buildings with Variation in number of Elastic Columns Pudjisuryadi, Pamuda; Lumantarna, Benjamin; Wijaya, Fransisca; Aphrodita, C.; Jesica, A.; Karyanto, Y.; Theodora, M.K.
Civil Engineering Dimension Vol. 24 No. 1 (2022): MARCH 2022
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1198.11 KB) | DOI: 10.9744/ced.24.1.46-53

Abstract

Modified-Partial Capacity Design (M-PCD) is proposed as one alternative of structural design methods. In M-PCD, the partial side sway mechanism where beams and some columns may develop plastic hinges. This method uses two structural models during the design process. The models are used to simulate undamaged and damaged structures when subjected to design earthquake (R=8.0) and larger target earthquake (R=1.6) respectively. In this study, 6- and 15-story square buildings with 30% and 50% elastic column are designed using M-PCD. Performances of the buildings are investigated by using non-linear time history analysis. Results show that the buildings’ performances are still unsatisfactory, especially for the 15-story buildings. However, it should be noted that the levels of earthquakes used for the analysis were larger than that used for the design. A more accurate prediction of the required strength should be developed further to improve M-PCD.
Relation of chemical characteristics and sensory profile of catfish (Pangasius sp.) belly processed by various smoking methods Wijaya, Fransisca; Tri Kumala Dewi, Rike; Prathama, Sebastian; Wibisono, Agus Purnomo
Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Vol 7, No 3 (2024): IN PROGRESS
Publisher : Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.afssaae.2024.007.03.5

Abstract

Catfish (Pangasius sp.) belly, a by-product of the frozen fish fillet industry, has certain processing limitations, thereby reducing product utilization and selling value. It is a potential process for producing products with highl market acceptance. The study aimed to investigate the relationship between the chemical characteristics of a catfish belly in various smoking methods and its sensory profile. Various smoking methods in this research include smoking cabinets, vertical offset smokers, traditional smoking houses, and liquid smoke, which had different parameters of time, temperature, and distance to the smoke source. The chemical characteristics of smoked catfish belly were determined in terms of proximates, total phenols, and total acid. The sensory profiles in the form of intensity of 8 attributes of smoked catfish belly were obtained using the Rate-All-That-Apply method accompanied by a hedonic test (n = 80). Different smoking parameters in each method greatly influence the chemical characteristics and sensory profiles produced. Methods with longer smoking times will produce lower water content,  increasing the fat content and a strong smoky aroma and taste. The correlation between chemical characteristics, sensory profile, and hedonic was also analyzed using Partial Least Square Regression (PLS regression) to determine the relationship with the stomach of smoked catfish belly using various methods. Of all the methods, the smoking cabinet was the optimal method for processing smoked catfish belly.
Co-Authors Aphrodita, C. Benjamin Lumantarna Ima Muljati Jesica, A. Karyanto, Y. Liske Widjojo Pamuda Pudjisuryadi Prathama, Sebastian Theodora, M.K. Tri Kumala Dewi, Rike Wibisono, Agus Purnomo