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Effective Used of Oncom Tofu By-Product as a Broiler Chicken Feedstuff
LD Mahfudz
Journal of Animal Production , 2006,
Abstract: A research was conducted to know affectivity of “oncom” of tofu by-product as a broiler chicken feedstuff, was done at Poultry Science Laboratory, Faculty of Animal Husbandry, Diponegoro University Semarang, from September until October 2002. Sixty broiler chick strain Arbor Acres at 1 week old, unsex with initial body weidht 120.08±15.58 g was used. Homogeneity test of material used Barlet Test consider of Sudjana (1996). The chicks was postal house litter system with long and wide 10 x 6 m2, open walls and roof from “genting”. The house was divided on 20 pen with bamboo stick by 1 x 0.75 x 0.75 m3 per pen. House was comleted by feeder and waterer, brooder and scale triple-beam “O Haust”. Tofu by-product was fermented by “oncom” yeast consist of Neurospora sp. Experimental feed based on yellow corn, rice polished, soybean, fish meal and mineral mix and tofu by-product. The feed was formulated with same protein and energy (equal protein and equal energy). The feed for first period with 22% protein and 2.900 kcal/kg, will the feed for last period with 20% protein and 3.000 kcal/kg. The treatment are tofu by-product fermentation as follow : T0, T1, T2 and T3 are 0, 10, 15 and 20% respectively. The parameters were feed consumption, body weight gain, feed conversion ratio, last body weight and carcass percentage. The Completely Randomized Design was used as Experiment design, consist of 4 treatment with 5 replication each, and every experimental unit consist of 3 birds. The data was analyzed by Analysis of Variace (ANOVA) using F-test to know effect of treatment. If there is significantly affected by treatment continued by Multiple Range Test by Duncan (Srigandono, 1989). The experiment result shown that feed consumption, body weight gain, last body weight, carcass weight and carcass percentage significantly (P<0.05) increase, will feed conversion ratio significantly (P<0.05) decrease by tofu by-product fermented with “oncom’ yeast in the ration. The experiment result can be concluded that tofu by-product fermented with “oncom” yeast was effective as a feedstuff of broiler chicks until 20% in the rations. (Animal Production 8(2): 108-114 (2006) Key Words : Tofu by-product fermented by “oncom” yeast, performance, broiler chick
Genetic Variation through Polymorphism of Blood and Egg White Protein in Three Kinds of Kedu Chickens at Laying Period
LD Mahfudz,AR Wulandari,S Johari
Journal of Animal Production , 2011,
Abstract: Genetic variation of five blood protein loci and three egg white protein loci in three kinds of Kedu chicken, namely the black skin and black feather (BB), black skin and white feather (BW) and white skin and white feather (WW) were investigated using polyacrilamide gel electrophoresis. The result showed that five blood loci (pre-albumin, albumin, post-transferin, transferin and hemoglobin) and three egg white loci (lysozim, ovalbumin and conalbumin) were found to be polymorphic in three kinds of Kedu chicken. BW has average higher heterozygosity than BB and WW. The result was shown in blood and egg white protein polymorphism. There was no difference on blood and egg white protein in the genetic variation. The average of heterozygosity of Kedu chicken of high production and low production was not different. Genetic distance among three populations of Kedu chicken showed that Kedu chicken BW was closer to WW than to BB.Key Words: Kedu chicken, protein polymorphism, blood, egg white, genetic variation
Penjernihan Air Dari Pencemar Organik dengan Proses Fotokatalis pada Permukaan Titanium Dioksida (TiO2)
Osi Arutanti,Mikrajuddin Abdullah,Khairurrijal,Hernawan Mahfudz
Jurnal Nanosains & Nanoteknologi , 2009,
Abstract: Fotokatalisis merupakan sebuah proses reaksi kimia yang dibantu oleh cahaya dan katalis padat. Dimana dalam langkah reaksinya melibatkan pasangan electron-hole (e- dan h+). Katalis padat yang digunakan sebagai fotokatalisator adalah TiO2 anatase. Proses penjernihan air limbah leuwi gajah membuktikan bahwa fotokatalisis menggunakan TiO2 merupakan cara yang aman dan efektif dalam proses sterilisasi dari pencemar organik
Pelapisan Nanomaterial TiO2 Fasa Anatase pada Nilon Menggunakan Bahan Perekat Aica Aibon dan Aplikasinya Sebagai Fotokatalis
Haruno Subiyanto,Mikrajuddin Abdullah,Khairurrijal,Hernawan Mahfudz
Jurnal Nanosains & Nanoteknologi , 2009,
Abstract: Dalam eksperimen ini, pelapisan nanomaterial TiO2 anatase dilakukan pada bahan nilon dengan menggunakan bahan perekat Aica Aibon. Proses pelapisan dilakukan dengan merendam bahan nilon yang sudah terlapisi dengan lem Aica aibon pada larutan TiO2 8 gr/10 ml diatas magnetic stirrer dengan suhu pemanasan 50 oC selama 2 jam. Proses fotokatalis diinvestigasi berdasarkan efek perubahan warna pada larutan pewarna wantex yang disinari cahaya matahari secara langsung. Pengamatan terhadap efek perubahan warna dilakukan secara kualitatif.
Peningkatan Efektivitas Defoamer Silika (SiO2) dengan Coating Pada HDPE (High Density Polyethylene)
Maria Evita,Mikrajuddin Abdullah,Hernawan Mahfudz,Khairurrijal
Jurnal Nanosains & Nanoteknologi , 2009,
Abstract: Telah dibuat defoamer silika (SiO2) yang di-coating ke HDPE (High Density Polyethylene) pada suhu 70 oC sampai 100 oC. silika yang telah di-coating memiliki ukuran partikel 18 nm, serta banyaknya silika dalam HDPE rata-rata 56.42%. Defoamer ini menunjukkan peningkatan efektifitas defoaming dari defoamer silika saja yang hanya mampu menyisakan foam 5% - 86% pada berbagai variasi konsentrasi silika dalam foam dengan konsentrasi deterjen (penghasil foam) yang bervariasi pula. Defoamer ini mampu menyisakan foam 0% - 50% setelah 5 menit pada variasi konsentrasi silika dan deterjen yang sama. Setelah digunakan sebagai defoamer, silika tertinggal dalam larutan sebesar 0.27% dari jumlah silika awal yang menempel pada HDPE.
Knowledge Sharing: A Model
Sufianto Mahfudz,Mahyuddin K. M. Nasution,Sawaluddin Nasution
Computer Science , 2013,
Abstract: We know anything because we learn about it, there is anything we ever share about it, but now a lot of media that can represent how it happened as infrastructure of the knowledge sharing. This paper aims to introduce a model for understanding a problem in knowledge sharing based on interaction.
The division and bending of green and red semiconductor laser light at the same time  [PDF]
Remzi Y?ld?r?m
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.310114
Abstract: In this experimental study, the laser light was split and bended using a specially designed glass lenses at the same time. This process has been done at the atmospheric pressure and room temperature conditions. During the experiments, the semiconductor laser as a source of green and red laser diode is used. In addition, polari- zation, magnetic field, electric field or any other auxiliary materials and systems which affect laser light are not used to bend the laser light. Only transparent glass lenses that are designed specially are used in the experimental study.
Benefaction from Carbonation of Flue Gas CO2 as Coal Mining Filling  [PDF]
Y?ld?r?m ?. Tosun
Geomaterials (GM) , 2014, DOI: 10.4236/gm.2014.42007
Abstract: CO2 capturing, transport and sequestration by pressurized water dissolution and reacting by natural alkali lime and magnesia in coal fly ash or other sources become an industrial advantageous sequestration option resulting in green waste solutions or solid fines. Mg and Ca containing minerals are reacting with CO2 to form carbonates. Various types of fly ash materials may react with CO2 to form carbonate regarding ash composition and reaction parameters. Mineral sequestration of CO2 will also allow using the products in cement industry or as cement material in constructions with low cost. This paper discussed progress on coal mining filling by carbonation method using coal fly ash of Soma, Yatagan, Afsin Elbistan Power Stations. Other filler materials containing coal mine waste shale, fly ashes and foam concrete, and additives were searched for pretreatment methods to enhance cement reactivity; and in analyzing the structural changes to identify reaction paths and potential barriers.
Shale Stone and Fly Ash Landfill Use in Landslide Hazardous Area in Sirnak City with Foam Concrete  [PDF]
Y?ld?r?m ?. Tosun
Geomaterials (GM) , 2014, DOI: 10.4236/gm.2014.44014
Abstract: Sirnak City and the surrounding areas are on steeper slopes. There are sliding large land masses or rocks. Underground water and harsh climatic conditions contain high risk hazard areas in urban living site with higher population density. In order to eliminate landslides and related events, significant precautions should be taken. The mapping of landslide risk may ease to take precautions. Even the application of landfill rock may reduce water content of soil. In this research, fly ash and Mine Waste shale stone were used with low density foam concrete. Waste mixture at certain proportions decreased cement use. Shale stone as fine aggregate instead of fly ash in specific proportions improved mechanical strength and porosity. Hence landslide hazardous area could be safer for urban living.
On Being a Juror: A Phenomenological Self-Study
LD Fortune
Indo-Pacific Journal of Phenomenology , 2009,
Abstract: Phenomenological inquiry offers a vehicle for transcending conventional disciplinary boundaries and investigative settings. Van Manen's protocol writing offers a hermeneutic tool for human scientific phenomenological research that is ideal for the empirical realm of everyday lived experience. Underlying this approach is the tenet that interpretative phenomenological research and theorizing cannot be separated from the textual practice of writing. The entirety of this paper is a protocol, in the form of a phenomenological self-study. It describes one experience in an unfamiliar environment as a criminal trial juror. It represents data capture that can stand alone for purposes of independent interpretation. Since qualitative research in the venue described is limited by protective judicial restrictions, this phenomenological protocol captures unique data in an otherwise inaccessible setting. It suggests that protocol writing offers potential as a research tool in a myriad situations where conventional data collection techniques are impractical or unavailable.
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