Bahruddin Bahruddin
Jurusan Teknik Kimia Fakultas Teknik Universitas Riau Kampus Bina Widya Simpang Baru Panam Pekanbaru 28312

Published : 33 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 33 Documents
Search

تطبيق اللعب اللغوي بطاقة الصدر في تعليم اللغة العربية لترقية مهارة الكتابة Umar, Umar; Bahruddin, Bahruddin
Arabia Vol 10, No 1 (2018): JURNAL ARABIA
Publisher : Program Studi Pendidikan Bahasa Arab Fakultas Tarbiyah IAIN Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/arabia.v10i1.3594

Abstract

لا يريد الباحث من هذا البحث إلا الهدفين الاثنين: أولهما، لمعرفة تطبيق وسيلة اللعب اللغوي بطاقة الصدر فى تعليم اللغة العربية لترقية مهارة الكتابة؛ وثانهما، لمعرفة فعّالية استخدام وسيلة اللعب اللغوي بطاقة الصدر فى تعليم اللغة العربية لترقية مهارة الكتابة فى الفصل الثامن بالمدرسة مزرعة الهدى الإسلامية المتوسطة كارانج أيار دماك.  ومن ثم، كان نوع هذا البحث تجريبيا، وأمّا المدخل الذي استخدمه الباين فهو المدخل الكمّي الذي يركز على تحليل ومعالجة البيانات الرقمية مع الأساليب الإحصائية. تجمع الباحثة البيانات فى هذا البحث بطريقة الملاحظة والتوثيق والإختبار. وطريقة تحليل البيانات إختبار الصدق وإختبار الثبات، تحليل الافتراض التقليدي هو إختبار الاستواء وإختبار التجانس.ويجد الباحث نتائج هذا البحث التى سيذكرها ما يلي: أولا، أن تطبيق وسيلة اللعب اللغوي بطاقة الصدر فى تعليم اللغة العربية لترقية مهارة الكتابة المستخدمة موافق بالنظرية والخطوات المقررة؛ ثانيا، أن تطبيق وسيلة اللعب اللغوي بطاقة الصدر لترقية مهارة الكتابة فى الفصل الثامن فعّال. والدليل على ذلك أن النتائج المكتسبة من الطلاب بعد الإختبار اكبر من النتائج المكتسبة قبل الإختبار، وهي بمعدل قبل الإختبار 59،72 وبمعدل بعد الإختبار 71،77 . ودرجة الإختبار من Tالحساب 11،15 اكبر من Tالجدول من المستوى 1% 2،71 و5% 2،02. بذلك فإن فعّالية استخدام وسيلة لوحة فى تعليم اللغة العربية لترقية مهارة الكتابة مقبولة. Tujuan dari penelitian ini adalah : 1) Untuk mengetahui penerapan media Kartu dada dalam pembelajaran bahasa Arab untuk meningkatkan keterampilan menulis, 2) Untuk mengetahui efektifitas penggunaan media kartu dada dalam pembelajaran bahasa Arab untuk meningkatkan keterampilan menulis di kelas 8 MTs Mazo’atul Huda Karanganyar Demak .Jenis penelitian ini adalah penelitian eksperimen dan pendekatannya yaitu pendekatan kuantitatif yang memusatkan pada analisis dan pengujian data angka menggunakan metode statistik (SPSS). Metode pengumpulan data dengan tehnik observasi, dokumentasi, dan tes. Dan metode analisis data yaitu uji validitas dan uji reliabilitas, analisis asumsi klasik yaitu uji normalitas dan uji homogenitas.Hasil yang diperoleh dari penelitian ini 1) penerapan media kartu dada dalam pembelajaran bahasa arab untuk meningkatkan keterampilan menulis sudah sesuai dengan materi dalam buku pembelajaran di sekolah. 2) dan penerapan  kartu dada saku untuk meningkatkan keterampilan menulis di kelas 8 efektif. Dan berdasarkan bukti nilai dari siswa bahwa rata-rata nilai Posttest lebih tinggi dari rata-rata nilai Pretest yaitu rata-rata nilai Pretest 59,72 dan rata-rata nilai Posttest 71,77. Dan dari nilai tes yang dihitung dengan menggunakan rumus Ttest, t˳ mencapai nilai 11,15 yang artinya lebih tinggi dari nilai Ttabel dengan taraf signifikansi 1% 2,71 dan 5% 2,02. Maka efektifitas penggunan media kartu dada dalam pembelajaran Bahasa Arab untuk meningkatkan keterampilan menulis bisa diterima.
Pengaruh Penambahan Graphene Oxide Terhadap Sifat Bioplastik Berbasis Pati Singkong Ekawati, Lestari; Amri, Amun; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Conventional plastics are still often used today derived from synthetic polymer materials that are difficult to be recycled and degraded by microorganisms. Bioplastic is one of solution to this problem. One of the materials that have the potential to be used as raw material is cassava because it has a high starch content. However, starch has a weakness that is still low mechanical properties. The general purpose of this research is to study the effect of adding graphene oxide and stirring time to mechanical properties, and biodegradation of cassava starch based bioplastic. Bioplastic was synthesized by intercalation method with variation of graphene oxide concentration (5% v / v and 15% v / v) and stirring time variation (30 minute and 60 minute). The results of the analysis showed that the treatment with the addition of filler graphene oxide and the variation of stirring time contributed to the resulting bioplastic mechanical properties. Bioplastic with the best characteristic was obtained by adding 15% graphene oxide and 60 minutes stirring time with tensile strength 3,92 Mpa, elongation 13,216%, modulus young 29,66 Mpa with water resistance 27,42% and within 1 week degraded 50 , 83%.Keywords: Bioplastic, glycerol, graphene oxide, Cassava Starch, plasticizer
Depolimerisasi Lateks Karet Alam Secara Kimia Menjadi Liquid Natural Rubber (LNR) Menggunakan Katalis Cocl2 Dengan Variasi Kadar Nano2 Septian, Septian; Amraini, Said Zul; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Increase in derivative products from natural rubber latex with the depolymerization process to low molecular weight Liquid Natural Rubber (LNR). The use of CoCl2 and NaNO2 catalysts as degradation agents is believed to increase the efficiency of the depolymerization process. The purpose of this research is to synthesize LNR from natural rubber latex and determine the effect of NaNO2 levels and chemical depolymerization reaction time of natural rubber on the formation of molecular weight of Liquid Natural Rubber (LNR) products. The method used to produce LNR consists of several stages. The initial stage is the centrifugation of natural rubber latex which is the basic material in producing LNR. Then the main process is chemical depolymerization of natural rubber latex by the addition of degradation agents such as hydrogen peroxide, sodium nitrite and the cobalt diclloride (CoCl2) catalyst, which ends with the purification stage. The chemical depolymerization process uses a variation of the content of NaNO2 degrading agents which is 2, 3, 4 bsk (weight per hundred rubbers). The LNR results obtained will then be analyzed using FTIR and GPC analysis tools. The results of this study found that the content of NaNO2 is 4 bsk NaNO2 degradation levels of 126,448 g/mol. By using the chemical depolymerization process also undergoes the formation of functional groups such as carbonyl and hydroxyl groups. Keywords: depolymerization, dry rubber concentration, gel permeation chromatography, natural rubber latex, reaction time
Pengaruh laju Pembebanan Organik Terhadap Efisiensi Penyisihan COD Limbah Cair Kelapa Sawit Menggunakan Bioeraktor Hibrid Anaerob Dua Tahap Musfa, Nopi Andri; Ahmad, Adrianto; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The development of palm oil factories in the last few years the rapid growth experienced and gived the impact of positive and negative impact for the community. One of the positive impact is increasing foreign exchange and community welfare state, while the negative impact that is causing waste could reduce the quality of the environment. Characteristic of COD in the liquid waste of plant crude palm is 60.000 mg/l. The value of COD for is a measure of water pollution of organic substances naturally cannot be degradation with microbiologists process and may also result in reduced oxygen dissolved in water. COD handling of liquid waste from factories crude palm oil can be done in anaerobic two stages bioreactor hybrid use anaerobic. This research purposed to determine the effect of organic loading rate for efficiency of COD removal and determine the optimal organic loading rate for efficiency of COD removal on liquid waste oil palm treatment with using anaerobic bioreactor hybrids two stages. Operating conditions on this research that using room temperature, each bioreactor volume by 10 liters and feet flow rate in bioreactor I is 5 liters per day with organic loading rate by 30 kg COD/m3day. The result showed that an COD removal with varying the organic loading rate of 8,568 kgCOD/m3day, 12 kgCOD/m3day and 19,8 kgCOD/m3day, this result obtained the highest efficiency COD removal in the organic loading rate is 8,568 kgCOD/m3day with the equal is 93,06 %. This indicates that bioreactor anaerobic hybrid two stages are relatively better for COD removal from the liquid waste content of crude palm oil.   Keywords: Anaerobic, COD, Liquid Waste of Crude Palm Oil, Two-Stage Anaerobic Bioreactor Hybrid  
Pengaruh Temperatur Dan Katalis Lempung Aktif Pada Pengolahan Sampah Plastik Jenis Polypropylene Dengan Metode Pirolisis Shaleh, Idries Hamidi; Daud, Syarfi; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The increasing amounts of plastic wastes generate enormous environmental problems because its nonbiodegradable properties. Various attempts have been done to reduce plastic waste. One of the way to reuse the plastic waste is converted to the liquid fuel by pyrolisis process. Pyrolysis, while can decomposed plastic safely, its product can be alternative source of fuel. The purpose of this study is to observe the effect of process variable (process temperature and active clay catalyst) for yield form polypropylene plastic and generated pyrolysis liquid fuel characterization. The pyrolysis process was carried out at 300 oC, 350 oC, 400 oC and variation of active clay catalyst to 0.5%, 1%, 1.5% and non-catalyst for polypropylene plastic and with reaction time of 120 min. The results of this study resulted in the highest yield of 65.86% at 400oC and 1.5% active clay catalyst. Characterization of pyrolysis liquid fuel of density 0,784 gram / ml, kinematic viscosity 2,956 cSt, flash point 49 oC and caloric value 46,815 MJ/ kg.Keyword : pyrolysis, active clay, polypropylena, pyrolysis liquid fuel
Pembuatan Biodiesel Dari Minyak Biji Karet Menggunakan Reaktor Membran Fauzi, Subehan; Syarfi, Syarfi; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the challenges in biodiesel manufacturing were the limited conventional mass transfer. The problem can be solved by using new technology in the biodiesel manufacturing process, namely tmembrane reactor. Membrane reactor has a close relationship to productivity and selectivity. This research aims to study the effect of variations in the molar ratio and transmembrane pressure on the characteristics and productivity of biodiesel. This research was conducted by two stages of preparation of rubber seed oil and biodiesel production using a membrane reactor. Rubber seed oil preparation process consists of stripping, drying, resizing, extraction and degumming. Biodiesel production is conducted by using H2SO4 catalyst, reaction time 6 h, reaction temperature 60°C, the variation of the molar ratio of 1:15, 1:20 and 1:25 and transmembrane pressure of 1 bar, 1.5 bar and 2 bar. Results of preparation of rubber seed oil yield of 19% was obtained with a free fatty acid content before and after degumming is 37.6% and 29.12%. The results showed the highest yield of biodiesel production amounted to 62.15% at a molar ratio of 1:20 and a transmembrane pressure of 1.5 bar. Biodiesel produced has a density of 0.880 g/ml, viscosity 7.73 mm2/s and flash point 180oC. The largest composition of biodiesel ie 26.5% of Oleic Acid Methyl Ester.Keywords: biodiesel, membrane reactor, rubber seed oil
Pengaruh Waktu Dan Suhu Pencampuran Terhadap Derajat Grafting Maleated Natural Rubber Dengan Inisiator Benzoil Peroksida Zuliarti, Indah; Khairat, Khairat; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Maleated natural rubber is modification of natural rubber with grafting polar fungsional of maleic anhydride. This research aim to learning effect of the reaction temperature and reaction time modified MNR with benzoyl peroxide. Benzoyl peroxide was used to initiate the free radical graft copolymerization. Process produced Maleated Natural Rubber were modifed at internal mixer reaction temperature and reaction time, which are variated by 150o C, 155o C, 160o C, and 165o C of reaction temperature, and 8, 10, 12, 14 minutes of reaction time. Amount of MAH 8 phr and 60 rpm rotor rate of internal mixer. Quantities of the grafted anhydride (MA) were determined by titration of the methanol. Initiator benzoyl peroxide of the grafted anhydride on natural rubber relatif not effected. Increasing temperatur and time reaction also causes increasing levels grafting until point of optimum. The results showed the optimum temperature is 160oC and reaction time is 12 minutes. produced 4,75% grafting.Keywords : benzoyl peroxide, grafting , maleic anhydric, maleated natural rubber, temperature
Pengaruh Kadar Serbuk Gergaji Dalam Proses Bioremediasi Tanah Tercemar Minyak Putri, Ade Rahayu; Amraini, Said Zul; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bioremediation is one of the most cost-effective and environmentally friendly methods to remediate many different types of waste materials widely used by many private and public entities. This research was conducted to determine the influence rates of sawdust in the bioremediation process of petroleum contaminated soil by using laboratory methods, in combination with the addition of fertilizer as sources of nitrogen. This research was conducted based on the 100:5:1 of C:N:P ratios, respectively. Test parameters needed to knowing the optimal condition in remediation were pH, moisture content and temperature. Results show the Total Petroleum Hydrocarbon (TPH) was degraded until 44% for the addition of 500 grams sawdust size 0.2 cm, 33% for the addition of 750 grams sawdust size 3 cm and 20% without any treatment within around two months. The addition of sawdust and fertilizer has increased the efficiency of TPH degradation and obtained positive relationship for the addition of fertilizer to the level of TPH degradation.  Keywords: bioremediation, sawdust, degradation, TPH, fertilizer
ENHANCING STUDENTS’ MOTIVATION IN LEARNING ENGLISH GRAMMAR THROUGH A COMPUTER-SUPPORTED LEARNING CLASSROOM MANAGEMENT Bahruddin, Bahruddin
JEELS - Journal of English Education and Linguistics Studies Vol 2, No 2: November 2015
Publisher : IAIN Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30762/jeels.v2i2.98

Abstract

This research is to examine the students‘motivational factors and attitude towards the learning ofEnglish grammar in a Computer-supported LearningSystem. Twenty-nine students were taught with astudent-centered approach and three grammar learningweb sites were used frequently for classroom andindividual English grammar practice, whereas anothertwenty-nine were taught with the traditional teachercenteredapproach. Both groups were given grammarcorrection and explanation tests before and after thestudy. After comparing the results of the pre-test andpost-test with those of the control group, it was foundthat the experimental group excelled over the controlgroup in both grammar correction and grammarexplanation. It proved that students‘ implicit andexplicit knowledge on English grammar was greatlyimproved by the computer-supported teaching methodsand environment. Further interviews with the studentsalso revealed that the new pedagogical practice hadprovided many positive motivational factors insupporting students‘ learning process.Keywords: motivation, grammar, computer-supportedclassroom.
Pembuatan Bioplastik Berbasis Pati Sagu Menggunakan Modifikator Asam Sitrat Dengan Microcrystalline Cellulose (Mcc) Sebagai Filler Dan Sorbitol Sebagai Plasticizer Novriyani, Vivi; Utami, Syelvia Putri; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The use of synthetic plastic in daily life trigger environmental problems. Bioplastic or biodegradable plastic is one of alternative solution to change comercial plastic that can be dangerous to environment because it is difficult to be degraded. One of the potential materials to become the raw materials is sago because of its high starch component. The general purpose of this research is to determine the characteristics of sago-based bioplastic by modified the citric acid, microcrystalline cellulose filler, plasticizer sorbitol. The synthesis method is casting of starch, water, filler and plasticizer with composition of filler is (15-25 % b/b), composition of plasticizer (25–35 % b/b), and composition citric acid (3-9 % b/b). The analysis of bioplastic was tensile strength, elongation, biodegradation,. The most significant factor of all responses was composition of filler microcrystalline cellulose, followed by plastcizer sorbitol and citric acid. The best process condition was bioplastic with composition filler 20 %b/b, plasticizer 30 % b/b, and citric acid 0,95 % b/b with the value was tensile strenght 15.84 MPa, elongation 9,31% and biodegradation 51.65%. Keyword : bioplastic, casting, filler, plasticizer, water uptake