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Performance of Mixed Matrix Membrane Adsorbers for Lysozyme Separation Saiful, Saiful
Jurnal Rekayasa Kimia & Lingkungan Vol 8, No 1 (2011): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

An application of EVAL based mixed matrix membrane adsorbers containing a strongcation exchange resins (Lewatit SP 112 WS) for capturing of Lysozyme (LZ) has been investigated.The preparation and performance of the mixed matrix membrane adsorbers is studied with 1-octanol as additive. The membranes in this study are prepared by immersion precipitation out of a DMSO solution containing 14% EVAL and with or without 14% 1-octanol. All membranes contain 65% resin based on dry solids. The morphology of the membranes are characterized using scanning electron microscopy.The membrane structure demonstrated open and interconnected porous structure with large resin particles are distributed in membrane structure. The MMM adsorber proved high adsorption capacity for capturing and concentrating LZ in feed solution. The Mixed matrix membranes (MMM) concept was anticipated as a moderate process with an increasedcapacity and a maximum adsorption capacity of 166 mg LZ/g membrane. The MMM act in protein separations both as protein purifier and concentrator and is an attractive alternative for packed bed systems because of its high capacity, high throughput, robustness, and ease of scaling up.Keywords: Mixed Matrix Membrane (MMM), Lysozyme (LZ), Adsorption, Membrane adsorber
Sintesis dan Karakterisasi Membran Poliuretan dari Minyak Biji Karet dan Heksametilen-1,6-diisosianat Nurman, Salfauqi; Marlina, Marlina; Saiful, Saiful; Saleha, Sitti
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 4 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i4.3772

Abstract

Minyak biji karet dapat dimanfaatkan untuk pembuatan membran poliuretan. Minyak biji karet memiliki bilangan hidroksi 40,33 mgKOH/g dan bilangan iod 154,05 gI2/g. Sintesis membran poliuretan menggunakan metode ikatan silang. Ikatan silang terbentuk dengan mereaksikan minyak biji karet sebagai sumber gugus -OH dengan heksametilen-1,6-diisosianat sebagai sumber gugus -NCO.  Membran poliuretan yang optimum dihasilkan pada komposisi 4,55:5 (g/g) memiliki sifat homogen, kering, elastis, berwarna kuning kecoklatan, bergelombang, fluks 0,544 L/m2.h.bar dan faktor rejeksi 100%. Hasil karakterisasi membran menunjukkan terbentuknya ikatan uretan pada bilangan gelombang 3480 cm-1, struktur morfologi membran padat, memiliki dua tahap dekomposisi pada 210 oC dan 392 oC, titik transisi gelas 65 oC, kekuatan tarik 1,03 kgf/mm2 dan elongasi 497,14%. Dari hasil karakterisasi membran poliuretan, membran tersebut dapat digolongkan pada tipe membran reverse osmosis.
EUTHANASIA MENURUT PERSPEKTIF HUKUM ISLAM, HUKUM PIDANA, DAN ETIKA KEDOKTERAN Saiful, Saiful
Jurnal Mentari Vol 13, No 2 (2010)
Publisher : Universitas Muhammadiyah Aceh

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Menurut perspektif hukum Islam, euthanasia merupakan tindakan yang diharamkan. Ada beberapa alasan euthanasia dilarang dalam Islam, yaitu: Pertama, eutanasia merupakan tindakan mendahului takdir Allah swt. Setiap manusia sudah ditentukan ajalnya masing-masing oleh Allah swt. yang pada saatnya tiba tidak akan bisa diajukan atau diundurkan sedikit pun. Kedua, karena euthanasia merupakan bentuk putus asa dari rahmat Allah. Ketiga, eutanasia termasuk pembunuhan yang dilarang oleh Allah swt. Pembunuhan itu termasuk dosa besar. Undang-undang hukum pidana yang berlaku sekarang di Indonesia memuat pasal-pasal yang mengancam dengan hukuman bagi orang yang menghilangkan nyawa orang lain dengan sengaja ataupun karena kurang hati-hati dengan 12 tahun penjara. Seorang dokter bisa dituntut oleh penegak hukum, apabila ia melakukan euthanasia, walaupun atas permintaan pasien dan keluarga yang bersangkutan, karena perbuatan tersebut merupakan perbuatan melawan hukum. Kedokteran Islam menilai praktik eutanasia (pembunuhan dengan belas kasihan) diharamkan, Islam sangat menghargai kehidupan dan tidak memberi hak bagi manusia untuk mencabut nyawa seseorang karena masalah nyawa itu adalah hak dan milik Allah. Kata kunci: euthanasia, perspektif Islam, hukum pidana, etika kedokteran     DAFTAR  PUSTAKA   Akh Fauzi Aeri, “Euthanasia: Suatu Tinjauan dari Segi Kedoktoran, Hukum Pidana, dan Hukum Islam”, dalam, Problematika Hukum Islam Kontemporer IV, Jakarta: Pustaka Firdaus, 2002. Masjfuk Zuhdi, Masail Fiqhiyah: Kapita Selekta Hukum Islam, (Jakarta: Gunung Agung, 1997. Majalah Tempo Interaktif, “Meneguhkan Khidmah, Membangun Khoiro Ummah". Jakarta: Musyawarah Nasional Majelis Ulama Indonesia, tanggal 29 Juli 2005. Muhlish Usman, Kaedah-kaedah Ushuliyah dan Fiqhiyah, Jakarta: RajaGrafindo Persada, 1996. Ruswanto Syamsuddin, “Euthanasia dalam Hukum Islam”. Dalam, http//www.redaksi@amanah.or.id.2004. Setiawan Budi Utomo, Fiqh Aktual: Jawaban Tuntas Masalah Kontemporer, Jakarta: Gema Insani Press, 2003. Tim Penyusun Ensiklopedi Hukum Islam,  Ensiklopedi Hukum Islam, (Jakarta: Ichtiar Baru Van Hoeve, 1996. Yusuf Al-Qardhawi Fatawa Mu´ashirah, Jilid ke-dua.
MIXED MATRIX MEMBRANE ADSORBERS FOR GLYCEROL REMOVAL IN BIODIESEL Saiful, Saiful; Pratiwi, Febrina; Maulana, Ilham; Ramli, Muliadi
Jurnal Natural Volume 12, Number 1, March 2012
Publisher : Syiah Kuala University

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Abstract

Mixed matrixmembrane (MMM) adsorbers systems function as short and wide chromatographic columns in which the adsorptive packing consists of one or more micro-porous membranes. This study reports the use of membrane adsorbers for glycerol capturing and removing in crude biodiesel. The MMM are prepared by a wet phase inversion method. Magnesol were incorporated as active sites in the membrane. Matrix support of the membrane was prepared from chitosan.The optimum compositions of the adsorptive membranes were 3 % chitosan, 15% DMF and 60% loading adsorbent. The porosity of these membranes was 34 % and swelling degree was 52 %. The membrane clean water flux was 225 Lm-2h-1 at a trans-membrane pressure of 2.5 bar. The adsorptive membrane has been demonstrated to reduce the concentration of total glycerol in crude biodiesel. The amount of glycerol in biodiesel can be reduced 69.93 % in 60 minute which is agreed to value of SNI quality standards. The membrane adsorber can be regenerated and reused for biodiesel purification. The regenerated membrane can be reused with maintaining the high adsorption capacity. The methanol was better than ethanol to regenerate the magnesol membrane. The Magnesol membrane will be a new alternative method for biodiesel purification.Mixed matrixmembrane (MMM) adsorbers systems function as short and wide chromatographic columns in which the adsorptive packing consists of one or more micro-porous membranes. This study reports the use of membrane adsorbers for glycerol capturing and removing in crude biodiesel. The MMM are prepared by a wet phase inversion method. Magnesol were incorporated as active sites in the membrane. Matrix support of the membrane was prepared from chitosan.The optimum compositions of the adsorptive membranes were 3 % chitosan, 15% DMF and 60% loading adsorbent. The porosity of these membranes was 34 % and swelling degree was 52 %. The membrane clean water flux was 225 Lm-2h-1 at a trans-membrane pressure of 2.5 bar. The adsorptive membrane has been demonstrated to reduce the concentration of total glycerol in crude biodiesel. The amount of glycerol in biodiesel can be reduced 69.93 % in 60 minute which is agreed to value of SNI quality standards. The membrane adsorber can be regenerated and reused for biodiesel purification. The regenerated membrane can be reused with maintaining the high adsorption capacity. The methanol was better than ethanol to regenerate the magnesol membrane. The Magnesol membrane will be a new alternative method for biodiesel purification.
Pengembangan Membran Magnesol untuk Pemurnian Biodiesel Saiful, Saiful; Nurfitriana, Nurfitriana; Ramli, Muliadi; Maulana, Ilham
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 3 (2013): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v9i3.780

Abstract

Magnesol membrane has been prepared by mixing chitosan polymer with magnesol particles via phase inversion method. The optimum compositions of adsorptive membranes were 3% chitosan, 15% DMF and 60% loading adsorbent. The porosity of these membranes was 34,17% and swelling degree was 51,91%. The membrane clean water flux was 224,4 Lm‑2h‑1 at a transmembrane pressure of 2.5 bar.  The adsorptive membrane possesses an open and interconnected porous structure with a large surface area available for biodiesel purities adsorption. The results showed that after contacting in 60 minutes, numbers of acid value was reduced as 81,12% which is in accordance with value of SNI quality standards. In addition, the soap content adsorbed was 86,74%  as potassium soap and 86,73% as sodium soap. The regenerated membrane can be reused with mantaining the high adsorption capacity. The methanol was better than ethanol to regenerate the magnesol membrane. The Magnesol membrane will be a new alternative method for biodiesel purification.Keywords: biodiesel, membrane adsorption, chitosan, magnesol, acid number, soap
ANALISIS RISIKO FINANSIAL DENGAN METODE SIMULASI MONTE CARLO Saiful, Saiful; Mulyadi, Mulyadi; Mardin, Farid; Husnawati, Husnawati
978-979-127255-0
Publisher : PROSIDING HASIL PENELITIAN FAKULTAS TEKNIK

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Setiap perusahaan yang dibangun selalu diproyeksikan akan tumbuh, berkembang denganpencapain kinerja yang bagus, baik kinerja dalam perspektif keuangan, pelanggan,pertumbuhan maupun kinerja dalam perspektif proses bisnis internal. Namun dalamrealitasnya tidak semua perusahaan mampu melakukan pencapaian kinerja dengan bagus.Akibat kinerja finansial yang tidak bagus dalam waktu yang panjang mengakibatkankebangkrutan perusahaan. Fenomena dan realitas ini akan selalu mengancang eksistensiperusahaan. Dengan demikian perusahaan perlu mendapat gambaran terkaitkemungkinan-kemungkinan kondisi dan proyeksi kinenrja finasial dimasa mendatang.Dalam menjawab fenomena diatas penelitian ini menggunakan pendekatan metodesimulasi Monte Carlo dalam mensimulasikan kemungkinan-kemungkinan kinerja finansialdimasa mendatang. Data yang dibutuhkan dalam penelitian ini adalah data historis terkaitbiaya produksi, harga pokok produksi, harga jual dan volume penjualan. Data inidiperlukan untuk memperoleh estimasi perolehan keuntungan pada periode tertentu.Estimasi perolehan keuntungan inilah sebagai variabel yang tidak pasti, akibatketidakpastian itulah sehingga para owner atau manajer perusahan perlu mendapatkangambaran terkait kinerja finansial dimasa mendatang. Berdasarkan hasil simulasi MonteCarlo setelah membangkitkan bilangan random dengan n: 1000 maka diperoleh profitsebesar Rp 1.067.107,933 per bulan. Nilai tersebut menunjukkan angka yang lebih tinggidari margin kontribusi yang ditetapkan sebesar Rp 950.000.000,- dan probabilitas untukmemperoleh keuntungan diatas margin kontribusi yang ditetapkan adalah sebesar 58,6%.Gambaran ini menjelaskan bahwa kinerja finansial perusahaan dimasa mendatang relatifbagus (tidak berisiko).
Analisis Quality of Service (QOS) Jaringan Internet Fakultas Teknik Universitas Muhammadiyah Makassar Akbar, Akbar; Saiful, Saiful
Ainet : Jurnal Informatika Vol 1, No 1 (2019): Maret (2019)
Publisher : Universitas Muhammadiyah Makassar

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Abstract

Analysis Quality of Service (QoS) Internet Network Faculty of Engineering, University of Muhammadiyah Makassar guided by Zahir Zainuddin and Rahmania. QoS parameters were observed or measured is Bandwidth, Delay, Packet Loss and throughput. This research was conducted at the Faculty of Engineering, University of Muhammadiyah Makassar, this study aims to measure, analyze and determine Kualitias Internet Network Engineering Faculty of Muhammadiyah University Makassar. To measure Delay, Packet lost and throughput using software Axence NetTools 4.0 Pro. The results of measurements of parameters of Quality of Service (QoS) Internet network is measured is the bandwidth available on Thursday, Friday and Saturday = 10240 Kbps. Delay highest in the can on Thursday = 74.66 ms, while the lowest in the delay may be on Saturdays = 62 ms. Packet loss is the highest obtained on Thursday = 5.33%, while the lowest in the lost packet can be on Saturdays = 0.33%. The highest throughput in the can on Saturdays = 357 106 bps, while the lowest in the throughput can be on Thursday = 278 039 Bps. Based on the data delay and packet loss above, Internet Network Quality Faculty of Engineering, University of Muhammadiyah Makassar categorized as very good.
PENGARUH METODE LATIHAN DAN DAYA LEDAK OTOT TUNGKAI TERHADAP KECEPATAN LARI Saiful, Saiful
Selami Vol 1, No 34 (2011)
Publisher : Selami

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This objective of the research is to know the different effects of plyometric training method with interval training method and active-passive recovery and the explosive power of leg muscles towards the speed running. The experiment was conducted on all male-student Physical Education Program of  FKIP  Haluoleo University, year of school 2011/2012, who has graduated from athletics subject. The sample was taken are 56 students by using purposive sampling technique, and with 2x2x2 factorial design. The main instrument on the veracity of speed running technique was designed by the researcher while the instrument on the explosive power of leg muscles was the power test taken from Margaria Kalamen Test. Based on the result of this research : The speed running  is the better by using plyometric training method with active recovery  on the explosive power of good leg muscles group, while explosive power poor leg muscles group is is better by using interval training method with active recovery . Key words: Training method, explosive power, speed running.
STRATEGI PENGEMBANGAN PENDIDIKAN ISLAM DI PERGURUAN TINGGI AGAMA ISLAM (PTAI) Saiful, Saiful
JURNAL PEDAGOGIK Vol 1, No 1 (2014)
Publisher : Fakultas Tarbiyah dan Ilmu Pendidikan Universitas Muhammadiyah Aceh

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PTAI existence in this globalization era demanded an active role in developing the Islamic studies. Likewise develop the social sciences, humanities independently as part of Islamic studies. PTAI as Islamic educational institutions must develop Islamic education development strategy that refers to the Islamic epistemology. Epistemological occupies a strategic position in the development of Islamic education in PTAI, because he talked about how to get the right knowledge. The strategy of development of Islamic education in PTAI, among others, are (1) Reconstruction of Islamic Studies at PTAI.   (2) Developing the Islamic sciences. (3) The use of science to aid the study of Islam.  (4) Increased research faculty. (5) Improved quality standards PTAI, (6) Modernization PTAI. (7) Strengthening of Islamic education in PTAI epistemology. The effort to develop Islamic education in PTAI namely a) PTAI align themselves with the demands of modern, b) PTAI need to recreate a new paradigm of Islamic education, c) PTAI need to reorient education vision and mission, goals, management, organizational structure, materials and teaching methods, and culture community, d) PTAI should be orientation on improving the quality of faculty and students, e) development of Islamic education is directed through research, f) paradigm PTAI forward directed at cultural paradigm rather than natural, g) PTAI able to translate normative religion into science theoretical.
PENGARUH KADAR FENOLIK PADA DAUN TEH Camelia xinensis L. TERHADAP PREFERENSI EMPOASCA SP. (Homoptera : Cicadellidae) Saiful, Saiful; Sudarsono, Sudarsono
Majalah Obat Tradisional Vol 18, No 2 (2013)
Publisher : Faculty of Pharmacy, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/mot-TradMedJ18iss2pp%p

Abstract

Golongan senyawa fenolik adalah metabolit sekunder yang terdapat di seluruh bagian tumbuhan yaitu buah, kulit, akar, batang dan daun tumbuhan berfungsi sebagai pertahanan kimia (chemical defence) bersifat repellent dan detterent terhadap serangga herbivora. Golongan flavonoid lainnya yaitu katekin. Katekin dan turunannya (gallokatekin) pada daun teh diketahui berfungsi sebagai mekanisme ketahanan terhadap Empoasca sp. (Homoptera: cicadellidae). Untuk mengetahui kadar fenol pada tanaman teh Camelia sinensis L. klon Kiara dan klon Pasir Sarongge (PS) serta pengaruh golongan senyawa fenolik terhadap preferensi Empoasca sp. Hasil penelitian menunjukkan semakin tinggi polifenol pada pucuk daun teh semakin tidak disukai Empoasca sp.