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All Journal ESENSI: JURNAL BISNIS DAN MANAJEMEN Jurnal Natur Indonesia IJOG : Indonesian Journal on Geoscience Ethos SALAM: Jurnal Sosial dan Budaya Syar-i Jurnal Riset Kimia Proceeding Seminar LPPM UMP Tahun 2014 Jurnal Penelitian Pertanian Terapan Jurnal Geologi dan Sumberdaya Mineral MEDIA BINA ILMIAH Jurnal Analisis Bisnis Ekonomi Jurnal Teknologi & Industri Hasil Pertanian Jurnal Skala Kesehatan Kritis JOMSIGN: Journal of Multicultural Studies in Guidance and Counseling Dinamika Pendidikan Jurnal Kewarganegaraan Jurnal Litbang Kota Pekalongan
Sri Hidayati
Himpunan Ilmuwan dan Sarjana Syariah Indonesia (HISSI)
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Emergence of Lava Dome from the Crater Lake of Kelud Volcano, East Java Hidayati, Sri; Basuki, Ahmad; Kristianto, Kristianto; Mulyana, Iyan
Indonesian Journal on Geoscience Vol 4, No 4 (2009)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1122.098 KB) | DOI: 10.17014/ijog.v4i4.83

Abstract

DOI: 10.17014/ijog.v4i4.83Kelud Volcano (+1731 m) in East Java is one of the most active and dangerous volcanoes in Indonesia. A large lake occupies the summit crater. Historical eruptions generally only lasted for a very short time, mostly no longer than a few hours. The outburst is usually accompanied by pyroclastic flows. On August 2007, the activity of the volcano was initiated by the increase of the temperature of lake water and the change of the colour from typical green to yellow. Activities of the volcano are discussed following the swarms of volcano-tectonic (VT) earthquakes on September 10th, September 26th to 29th, and October 24th to November 2nd. On September 26th to 29th, hypocentral distribution of those VT shifted from 5 km deep to just beneath the crater. The highest number of VT earthquakes occurred on November 1st attaining 50 events, then followed by a swarm of B-type events, where the number reached 1437 events in a day. The volcanic activity peaked on November 3rd when seismic records became saturated, which then was preceded by a sharp increase of lake temperature and a sudden deflation of radial tilt. It suggests that the lava extrusion forming a lava dome was taking place.
Focal Mechanism and Parameter of Volcano-Tectonic Earthquake Source, in Mount Guntur, West Java Hidayati, Sri; Suparman, Y.; Loeqman, A.
Indonesian Journal on Geoscience Vol 6, No 1 (2011)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2123.629 KB) | DOI: 10.17014/ijog.v6i1.111

Abstract

DOI: 10.17014/ijog.v6i1.111Guntur Volcano in West Java is one of the most active volcanoes in Indonesia. The last eruption took place in 1847 and the volcanic activity has been dormant since then, however its seismicity is active. During the period of July to October 2009, the hypocenter distribution of VT earthquakes is mostly located at western flank of the volcano, beneath Guntur - Gandapura craters at the depth of less than 5 km. The depth pattern shows deeper to the northwest. The VT earthquakes deeper than 5 km were not found in this period. The focal mechanism of VT earthquakes are oblique normal fault, strike-slip fault and oblique reverse fault types. The mechanism of those earthquakes is not uniquely determined probably due to complicated structures at Guntur volcano complex area, which is aligned in NW-SE direction. T-axis of the oblique normal fault is trending in northwest - southeast direction similar to the structures found in the summit area of Gunung Guntur Volcano. Similarly, one of the strike-slip fault nodal line and P-axis of oblique reverse fault are also trending in northwest - southeast. Ploting of the earthquake source parameters (seismic moment, corner frequency, and stress drop) made to hypocenter distance shows no significant difference on those parameters between earthquakes at close and far distances to Kabuyutan station. It is probably due to the hypocenters are not concentrated in one zone. Meanwhile, the relationship between seismic moment (Mo) and seismic source radius (r) shows that for earthquakes with moment of smaller than 1018 dyne cm, the radius of the hypocenter is constant which is namely 60 m.
Magma Supply System at Batur Volcano Inferred from Volcano-Tectonic Earthquakes and Their Focal Mechanism Hidayati, Sri; Sulaeman, C.
Indonesian Journal on Geoscience Vol 8, No 2 (2013)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2639.733 KB) | DOI: 10.17014/ijog.v8i2.159

Abstract

DOI: 10.17014/ijog.v8i2.159The Volcano-Tectonic (VT) earthquakes occurring during September - November 2009 were analyzed. The result shows that the epicentres aligning in NE- SW direction coincided with the weak zone of Batur Volcano Complex. The focal zone is located at the depth around 1.5 - 5.5 km beneath the summit. Migration of magma was detected by ground deformation measured by GPS and focal mechanism. Mechanism of VT earthquake shows mostly normal fault types during the swarm in November 2009.
Struktur Pasar Dan Peringkat Indonesia Pada Perdagangan Tuna Segar Dan Beku Di Pasar Dunia, Jepang, USA, Dan Korea Selatan Hidayati, Sri
Proceeding Seminar LPPM UMP Tahun 2014 2014: Proceeding Seminar Nasional LPPM 2014, 20 Desember 2014
Publisher : Proceeding Seminar LPPM UMP Tahun 2014

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Abstract

Tujuan dari penelitian ini adalah untuk mengetahui struktur pasar dan mengetahui status Indonesia sebagai eksportir segar dan beku tuna di pasar kata, yaitu Jepang, Amerika Serikat, dan Rep Korea. Melalui penelitian ini, peneliti akan menunjukkan competitveness perdagangan tuna segar dan beku di dunia baik tujuan ekspor Indonesia. Penelitian ini menggunakan time series data dari tahun 1988 hingga 2012. Metode analisis yang Herfindahl Index (HI) dan Konsentrasi Rasio (CR4). Software Microsoft Exel yang digunakan untuk analisis. Hasil penelitian ini menunjukkan bahwa:. (1) Indonesia adalah eksportir tetap baik eksportir utama pada perdagangan segar dan beku tuna di Jepang, Amerika Serikat, dan Korea sebagai pasar dunia, (2) struktur pasar tuna segar di Jepang dan Amerika Serikat ; . dan tuna beku dari Jepang dan Rep Of Korea dipimpin untuk oligopoli; sementara pasar beku tuna di USA dipimpin monopoli baik pasar tuna segar di Rep. Dari Korea.Kata kunci: segar dan beku tuna, struktur pasar.
Inventarisasi Sarana dan Prasarana Pemukiman di Lembah Cikapundung Hidayati, Sri; Mukhsin, Dadan
ETHOS (Jurnal Penelitian dan Pengabdian) Vol 1 No.2 (2003) Ethos: Jurnal Penelitian dan Pengabdian (Sains & Teknologi)
Publisher : Universitas Islam Bandung

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Abstract

cikapundung valley is a potential location which is surrounding by the famous university in Bandung.
STRUKTUR PASAR DAN PERINGKAT INDONESIA PADA PERDAGANGAN TUNA SEGAR DAN BEKU DI PASAR DUNIA, JEPANG, USA, DAN KOREA SELATAN Hidayati, Sri
Jurnal Analisis Bisnis Ekonomi Vol 12 No 1 (2014): Volume 12, Nomor 1, April 2014
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.423 KB)

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui struktur pasar dan mengetahui status Indonesia sebagai eksportir segar dan beku tuna di pasar kata, yaitu Jepang, Amerika Serikat, dan Rep Korea. Melalui penelitian ini, peneliti akan menunjukkan competitveness perdagangan tuna segar dan beku di dunia baik tujuan ekspor Indonesia. Penelitian ini menggunakan time series data dari tahun 1988 hingga 2012. Metode analisis yang Herfi ndahl Index (HI) dan Konsentrasi Rasio (CR4). Microsoft Exel Software yang digunakan untuk analisis. Hasil penelitian ini menunjukkan bahwa:. (1) Indonesia adalah eksportir tetap baik eksportir utama pada perdagangan segar dan beku tuna di Jepang, Amerika Serikat, dan Rep Of Korea sebagai pasar dunia, (2) struktur pasar tuna segar di Jepang dan Amerika Serikat ; . dan tuna beku dari Jepang dan Rep Of Korea dipimpin untuk oligopoli; sementara pasar beku tuna di USA dipimpin monopoli baik pasar tuna segar di Rep. Dari Korea
PEMANFAATAN MINYAK SAWIT MERAH DALAM PEMBUATANBISKUIT KACANG KAYA BETA KAROTEN [Utilization of Red Palm Oil To Produce BetaCarotene-Rich Nuts Biscuit] Robiyansyah, Robiyansyah; Zuidar, Ahmad Sapta; Hidayati, Sri
Jurnal Teknologi & Industri Hasil Pertanian Vol 22, No 1 (2017): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (118.088 KB) | DOI: 10.23960/jtihp.v22i1.11-20

Abstract

The purpose of this research was to get formulation of red palm oil and cooking oil to produce nuts biscuits with the best organoleptic properties. The formula consisted of red palm oil and cooking oil mixture with 6 comparisons: (0:100), (20:80), (40:60), (60:40), (80:20) and (100:0). These formula were then used as basis to produce nuts biscuits. Observation was done on the organoleptic properties (aroma, texture, taste and color for all biscuits) for all samples, while  proximates test (water, fat,protein,ash content) and betacarotene content were done only for the best formulation. The data were descriptively analyzed and presented in tables and graphs. The best organoleptic properties of these betacarotene rich nuts biscuits was formulation of 20:80. This biscuits had water content 1,42%, ash content 1,21%, fat content 32,60%, protein content 12,59%, and the total of beta carotene 347,15 ppm, with the less normal for aroma (4,55), less crunchy for the texture (4,40), distinctive flavor beans for the taste (4,28), and yellowish for the color (4,50).Keywords: β-carotene, nuts biscuits,red palm oil.
APLIKASI JAMUR PEMUTIH PADA AMPAS TEBU SEBAAI BAHAN BAKU KERTAS Zulferiyenni, Zulferiyenni; Hidayati, Sri
Jurnal Teknologi & Industri Hasil Pertanian Vol 13, No 1 (2008): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (79.726 KB) | DOI: 10.23960/jtihp.v13i1.13 - 16

Abstract

Usage of high chemicals at process of paper and pulp generate much negative impact at environment. To lessen the mentioned used by enzyme of mushroom upon which white rot fungi because owning ability of lignin degradation selectively and only elaborating and cellulose of hemicelluloses in number a few. Result of research indicate that from is fourth of isolate test that is ampas tebu busuk isolate, isolate P. Porigens, isolate V. Volvaceae , Ganoderma sp and Omphilia sp can existing lignin degradable in bags and yield enzyme of laccase. Omphilia sp have potency for the degradable of lignin equal to 72% with degradation of cellulose equal to 0, 5% and yield enzyme activity of laccase equal to 37, 56 units / ml.   Keyword:  bagasse, lignocellulose, biopulping
PENGARUH WAKTU REAKSI ETANOLISIS PADA SUHU RUANG TERHADAP RENDEMEN DAN STABILITAS EMULSI PRODUK ETANOLISIS Palm Kernel Oil (PKO) [The Effect of Ethanolisis Reaction Time at Room Temperature on Yield and Emulsion Stability Ofproduct of Ethanolisis Palm Kernel Oil (PKO)] Yunggo, Jessica; murhadi, murhadi; Hidayati, Sri
Jurnal Teknologi & Industri Hasil Pertanian Vol 21, No 2 (2016): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (395.972 KB) | DOI: 10.23960/jtihp.v21i2.97 -106

Abstract

PKO (palm kernel oil) is made from palm kernel of Elaesis gueneensis Jacq, which is a mixture of triglycerides. Triglycerides can be converted into a number of derivative products such as mono-diglycerides (MG-DG). MG-DG can be formed by ethanolisis reaction. In this study ethanolisis reaction of PKO was done by adding 96% of technical ethanol containing NaOH 1% (w/w PKO) on PKO solution at a room temperature and a shorter time than the another PKO ethanolisis before. This study was aimed to find the best PKO ethanolisis reaction time in providing products of ethanolisis PKO with yield and high emulsion stability. The experiment was a nonfactorial  and arranged in a complete randomized block design (CRBD) with four replications.  The single factor studied was 7 levels of  the reaction time in which  were 1, 3, 5, 7, 9, 11 and 13 minutes.  The data  were analysed using ANOVA and  further by Orthogonal polynomial on the significant level of 1% and 5%. The results showed that the reaction time ethanolisis had no effect on the yield and stability of the emulsion of fresh coconut milk. The yield of the resulting range between 17.32% - 18.07% and the stability of emulsion ranged between 88.88% - 92.50% during one day and 85.23% - 89.50% during two days. The sensory observation indicated that PKO ethanolisis product can preserve coconut milk for 3 days of storage time with color and scent of fresh coconut milk, and  more stable compared to control.Keywords: emulsion stability, ethanolisis, PKO, time, yield
OPTIMASI PROSES PEMBUATAN METIL ESTER SULFONAT (MES) DARI MINYAK JARAK PAGAR (Jatropha Curcas L.) DAN PENGARUHNYA TERHADAP NILAI TEGANGAN ANTARMUKA MENGGUNAKAN METODE PERMUKAAN RESPON Hidayati, Sri; Zuidar, A. Sapta; Yanto, Ferdi
Jurnal Teknologi & Industri Hasil Pertanian Vol 14, No 2 (2009): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.834 KB) | DOI: 10.23960/jtihp.v14i2.160 - 172

Abstract

The objectives of this research were to obtain the optimum condition for processing of MES from methyl ester of jatropha oil, and to characterize MES processed at its  optimum condition.  The experiment was designed in a factorial 24 with four free variables: temperatures of sulfphonation (X1) consisted of : 60oC, 80oC, 100oC, 120oC, and 140oC;  the length  of sulfonation (X2) consisted of :  1,5 hours, 3 hours, 4,5 hours, 6 hours, and 7,5 hours;  methanol concentrations (X3) consisted of :  10%, 20%, 30%, 40%, and 50%;  purification temperatures (X4) consist of :  30oC, 40oC, 50oC, 60oC, and 70oC.  Data were analysed using response surface methodology of Minitab 14 software. The results showed that combination condition of the optimum treatment for interfacial tension was achieved when the process was carried out at temperature of sulphonation (X1) 102oC, time of sulphonation (X2) 3,9 hour, methanol concentration (X3) 38%, and temperature of purification (X4) 50oC with the IFT value stationer point at 3,418457 dyne/cm.  MES from methyl ester of jatropha oil processed at the optimum condition has the characteristics of  absorbance value  of 0,3 and emulsion stability  of 45%. Key words:  surfactant, methyl ester sulphonate, interfacial tension.
Co-Authors ,, Nurlina A. Loeqman A. Sapta Zuidar Afiyah Sri Harnany Ahmad Baequny Ahmad Basuki Ahmad Sapta Zuidar Baequni, Ahmad C. Sulaeman Cecep Sulaeman Damayanti, Elok DEWI SARTIKA Dewi Sartika Dyah Koesoemawardani Estu Kriswati Ferdi Yanto Fibra Nurainy Fitriani, Hardianti Illim - Inayah, Maslahatul Indar Widowati Iyan Mulyana Junita Doodoh, Martha Kamarusdiana, Kamarusdiana Kristianto Kristianto Kurnianti, Apsari Wahyu Magfirotun, Laila Mahirawatie, Ida Chairanna Murhadi Murhadi Nurul Huda Omang, Amalfi Perdana, Adhi Surya Pratiwi, Yeni Ika Priambodo, Imam Catur Robiyansyah, Robiyansyah Sri Purwanti Suharyono Suharyono Sumarni Sumarni Supartoyo Supartoyo, Supartoyo Supriyo Supriyo Sutoyo Sutoyo Y. Suparman Yunggo, Jessica Zahra, Intan Maulia Zulferiyenni, Zulferiyenni