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Indonesian Journal of Applied Sciences

ijas
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Published by Universitas Padjadjaran

ISSN : 20899203 EISSN : 25811991 DOI : -

Core Subject : Social,

Environmental Science

Indonesian Journal of Applied Sciences (IJAS) is a scientific journal published three times a year (April, August, December). Indonesian Journal of Applied Sciences publish original research results related to research in the field of natural science, covering a wide range of topics written in the field of knowledge: medicine, agriculture, animal husbandry, fisheries, pharmaceuticals, and other exact sciences

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Articles 8 Documents

Search results for , issue "Vol 3, No 1 (2013)" : 8 Documents clear

BIOKONVERSI LIMBAH PERKEBUNAN SINGKONG MELALUI FERMENTASI ANAEROB TERHADAP PERFORMA DOMBA LOKAL JANTAN UTAMI DEWI HARIANINGSIH
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/.v3i1.16827

VALIDASI METODE OKSIDASI ELEKTROKIMIAYANG TERMEDIASI – KONDUKTOMETRI UNTUK PENENTUAN KADAR FENOL EUIS IFAH LATIFAH
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

HUBUNGAN JARAK TRANSPOR POLEN, UKURAN BUTIR SEDIMEN DAN KUANTITAS POLEN DALAM SEDIMEN RESEN DELTA MAHAKAM WINANTRIS WINANTRIS
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

PENINGKATAN KUALITAS HASIL UBI TIGA VARIETAS KENTANG MELALUI APLIKASI PAKLOBUTRAZOL DI DUA DATARAN MEDIUM SYAHBUDIN Y.; YUYUN YUWARIAH; JAJANG SAUMAN HAMDANI; SUMADI SUMADI
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

ANALISIS NUTRISI PADA MODIFIKASI FERMENTASI BIJI KAKAO DENGAN PENAMBAHAN SACCHAROMYCES CEREVISIAE, LACTOBACILLUS PLANTARUM, ACETOBACTER ACETI, ENZIM BROMELAIN, DAN SISTEI DWIRYANI ARIZONA; IMAN PERMANA MAKSUM; R. UKUN M. S. SOEDJANAATMADJA
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

AKTIVITAS DEPIGMENTASI FRAKSI N-HEKSANA BUAH MALAKA (PHYLLANTHUS EMBLICA) PADA SEL MELANOSIT MOUSE MELANOMA B16 RETI HINDRITIANI; ENDANG SUTEDJA; SETIAWAN SETIAWAN; MUCHTAN SUJATNO
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

PREDIKSI SIFAT FISIKOKIMIA DAN SPEKTRUM KUERSETIN, ANDROGRAFOLID DAN GLUKOSAMIN MENGGUNAKAN METODE AB INITIO, SEMIEMPIRIS DAN MEKANIKA MOLEKUL SANDRA MEGANTARA
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

AbstractThere are two methods of approach in solving computational chemistry problems which are computational quantum chemistry and computational non-quantum chemistry. Computational quantum chemistry methods are e.g. ab initio and semiempirical, whilst the non-computational quantum chemistry method is molecular mechanics. This study was aimed to find the difference ofcomputational quantum chemistry and non-computational quantum chemistry methods by applying ab initio, semiempirical and molecular mechanics methods to predict the physicochemical properties (Log P, melting point) and spectrum (ultravioletvisible, 1H-NMR, 13C-NMR) of quercetin, glucosamine and andrographolide as a representation of natural bioactive compounds. Results showed that the minimum energy of geometry optimization provided by ab initio methods, while the fastest time for geometry optimization given by molecular mechanics method. Log P prediction was not influenced by the geometry optimization, with error rate: MAD 0.271; MSE 0.204; MFE 0.255 and MAPE 9.66%, meaning the accuracy was good. Melting point prediction was not influenced by the geometry optimization, with error rate: MAD 190.96; MSE 55434.78; MFE -190.96and MAPE 70.82%, meaning the accuracy was not good. Ultraviolet-visible spectrum prediction was affected by the geometry optimization. Ab initio method was the best for predicted λ maximum with error rate: MAD 2.78; MSE 7.90; MFE 2.78 and MAPE 1.15%. The error rate of semiempirical method: MAD 6.46; MSE 42.06; MFE 6.46 and MAPE 2.73%. The error rate of molecularmechanics method: MAD 30.93; MSE 958.65; MFE 30.93 and MAPE 12.94%. The results of 1H-NMR and 13C-NMR spectra prediction was not influenced by the geometry optimization and chemical shift in accordance with the theory of NMR spectra.Keywords: ab initio, semiempirical, molecular mechanics, quercetin, glucosamine, andrographolide

ISOLASI DAN KARAKTERISASI PROTEIN SORGUM DAN PENINGKATAN KARAKTER JEJARING PROTEIN SORGUM DENGAN PENAMBAHAN TRANSGLUTAMINASE ATAU GLUKOSA-OKSIDASE ENDAH WULANDARI
Indonesian Journal of Applied Sciences Vol 3, No 1 (2013)
Publisher : Universitas Padjadjaran

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