bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance of Broilers and Native Chickens Fed with Unfermented and Fermented Arenga Waste
Authors: Nurmi Aisyah , Harahap Nurainun , Santi Melia Afnida 
Published: May 2019

The objectives of this research were to study the performances of broilers and native chicken given arenga waste (APAF) fermentation by Saccaromyces cerevisiae and arenga waste unfermentation (APA) in the ration. Sixty day-old chicks of broiler Arbor Acres strain and sixty native chicken were divided into four dietary treatments and three replications (10 birds/replicate). Design of this experiment was completely randomized design factorial 2x2, with factor A was feeding (A1 = arenga waste unfermentation, A2 = arenga waste fermentation), and factor B was chickens type (B1=native chicken, B2=broilers). The variables observed were: daily weight gain, feed consumption, and feed conversion. The results showed that the performances of the broiler given fed with unfermented and fermented arenga waste showing no significant differences between all treatments. The results showed that there is an interaction between feeding and chicken type was no significant differences (P>0.05). Conclusion from this research of using fermented and unfermented arenga waste until level of 2.5% in ration showed no significant differences in the performance.
Analisa Potensi Ekstrak Daun Kari (Murraya koenigii L. Spreng)
Authors: Mustanir Mustanir , Al-Qarana Tara Rizki , Gusvianna Hilda , Saidi Nurdin 
Published: May 2019

Daun M. koenigii sangat umum digunakan sebagai rempah dalam berbagai masakan di Aceh, namun pemahaman masyarakat terhadap pentingnya daun M. koenigii perlu ditingkatkan agar pemanfaatannya dapat ditingkatkan. Dalam penelitian ini dilakukan uji aktivitas antibakterial daun M. koenigii terhadap bakteri E. coli dan S. aureus serta uji aktivitas antioksidan terhadap radikal bebas DPPH (1,1-Diphenyl-2-pycrilhydrazil). Uji antibakterial dilakukan dengan metode difusi cakram, dan hasilnya ekstrak etil asetat menghasilkan zona hambat yang lebih besar dibandingkan ekstrak metanol dan n-heksana. Zona hambat yang dihasilkan pada konsentrasi 1, 5 dan 10 % secara berturut-turut adalah 8,7; 7,7 dan 6,7 mm terhadap E. coli, dan 12,8 ;10,7 dan 8,0 mm terhadap S. aureus. Ekstrak etil asetat memiliki aktivitas antioksidan paling kuat dibandingkan dengan ekstrak metanol dan nheksana secara berturut-turut berdasarkan nilai IC50 yaitu 23; 50,54; dan 64,70 ppm. Berdasarkan kromatografi kolom diperoleh 8 (A-H) subfraksi dan subfraksi G menunjukan aktifitas antioksidan yang paling kuat sebesar 14,41 ppm

Murraya koenigii (M. koenigi) leaves are very commonly used as spices in various cuisines in Aceh, but people's understanding of the importance of M. koenigi leaves needs to be improved, so it can be utilized better. In this study, the antibacterial activity of M. koenigii leaves was carried out against E. coli and S. aureus and antioxidant activity against DPPH free radicals (1,1- Diphenyl-2-pycrilhydrazil). Antibacterial tests were carried out using the disc diffusion method, and as a result, the ethyl acetate extract produced a larger inhibition zone than the methanol and n-hexane extracts. The inhibition zones produced at concentrations of 1, 5 and 10% were 8.7; 7.7 and 6.7 mm against E. coli, and 12.8; 10.7 and 8.0 mm against S. aureus. Ethyl acetate extract had the strongest antioxidant activity compared to methanol and nexexane extracts based on IC50 values, 23; 50; 54; and 64.70 ppm. Based on column chromatography obtained, 8 (A-H) subfraction and subfraction G showed the strongest antioxidant activity of 14.41 ppm.
Konversi Oil Palm Frond (OPF) Sebagai Bahan Baku Bioetanol Dengan Proses Pretreatment Organosolv dan Hidrolisa Asam
Authors: Saisa Saisa , Husin Husni , Mahidin Mahidin 
Published: May 2019

Penelitian ini menggunakan pelepah sawit sebagai sumber holoselulosa yang dikonversi menjadi bahan baku bioetanol (gula total). Penelitian ini bertujuan untuk mempelajari proses pretreatment organosolv berpelarut etanol dan hidrolisa asam terhadap konversi pelapah sawit menjadi gula. Proses pembuatan gula dari pelepah sawit diawali dengan melakukan proses delignifikasi dan dilanjuti dengan proses hidrolisa. Proses delignifikasi berlangsung pada kondisi dengan variasi konsentrasi etanol 35%, 55%, 75%, dan 90% v/v temperatur 100 dan 120 °C dan waktu reaksi 60 dan 90 menit. Selanjutnya untuk proses hidrolisa menggunakan asam sulfat dengan variasi konsentrasi 1%, temperatur 60, 70, 80, 90 dan 100 °C dan waktu reaksi 15, 30, 45, 60 dan 75 menit. Hasil penelitian menujukkan bahwa pada kondisi delignifikasi dengan konsentrasi C2H5OH 75%, temperatur 120 °C, selama 60 menit, serta 1% katalis (H2SO4) dan pada kondisi hidrolisa H2SO4 1%, waktu 30 menit, dan temperatur 90 °C diperoleh yield total gula tertinggi sebesar 93,65 mg/L.

This study used palm fronds as a source of holocellulose which was converted into bioethanol raw material (total sugar). This study aimed to study the organosolv pretreatment process with ethanol solution and acid hydrolysis towards the conversion of palm fronds oil into sugar. The process of sugar production of palm fronds began with a delignification process and continued with the hydrolysis process. The delignification process took place in conditions with variations in ethanol concentration of 35%, 55%, 75%, and 90% (v/v) temperatures of 100 and 120°C and reaction times of 60 and 90 minutes. Furthermore, the hydrolysis process used sulfuric acid with a variation of 1% concentration, temperature 60, 70, 80, 90 and 100°C and reaction time of 15, 30, 45, 60 and 75 minutes. The results showed that in the delignification conditions with a concentration of C2H5OH 75%, temperature of 120°C, for 60 minutes, and 1% catalyst (H2SO4) and hydrolysis conditions H2SO4 1%, 30 minutes time, and the temperature of 90°C, the highest total sugar yield of 93.65 mg/L was obtained.
Skrining Fitokimia Ekstrak Etanol, Etil Asetat Dan N-Heksana Batang myristica Fragrans
Authors: Damayanti Rizki , Ervilita Ria 
Published: May 2019

Telah dilakukan uji skrining fitokimia terhadap batang Myristica fragrans. Uji fitokimia yang dilakukan diantaranya adalah alkaloid, flavonoid, fenolik, saponin, dan terpenoid/ steroid. Hasil uji skrining fitokimia ekstrak etanol batangMyristica fragrans menunjukkan adanya kandungan flavonoid, saponin dan terpenoid/ steroid. Hasil skrining fitokimia pada ekstrak etil asetat menunjukkan adanya falvonoid dan terpenoid/ steroid sedangkan pada ekstrak n-heksana menujukkan adanya senyawa terpenoid/ steroid. Senyawa-senyawa kimia yang tidak terdapat pada ketiga ekstrak dengan variasi pelarut daun Myristica fragrans adalah senyawa alkaloid dan fenolik.

Phytochemical screening tests on the stem of Myristica fragrans have been carried out. Phytochemical tests were included alkaloids, flavonoids, phenolics, saponins, and terpenoids/steroids. The results of the phytochemical screening test of ethanol extract from the stem of Myristica fragrans showed the presence of flavonoids, saponins and terpenoids/steroids. The results of phytochemical screening on ethyl acetate extract showed phalvonoid and terpenoids/steroids whereas n-hexane extract showed terpenoids/steroids. Chemical compounds which were not found in the three extracts with a variety of solvent leaves Myristica fragrans were alkaloid and phenolic compounds.
Pra Rencana Pabrik High Fructose Syrup Dari Menir
Authors: Djoa Dominikus Djago , Hadi Bambang Susila , Mahayasa I Gede Aryana 
Published: May 2019

Tujuan pendirian pabrik ini adalah : Pemenuhan kebutuhan bahan pemanis sirup fruktosa di dalam negeri, meningkatkan devisa negara di sektor industry, memperluas volume produktifitas terutama bagi industri yang memerlukan sirup fruktosa. Proses pembuatan HFS dari menir dengan cara isomerisasi dibagi menjadi tiga tahap : pretreatment, hidrolisa dan isomerisasi menggunakan enzim glucoisomerisasi. Aspek kelayakan pra rencana pabrik HFS : (1) aspek ekonomi yaitu Pay Out Time, Rate of Return dan Break even Point; (2) aspek proses; (3) aspek teknik; (4) aspek manajemen perusahaan. Pra rencana pabrik HFS dalam perencanaan adalah semi kontinyu, 24 jam per hari dengan 300 hari kerja/tahun, kapasitas produksi 9475,76 ton sirup/tahun, bahan baku 2700 ton menir/tahun, konsumsi air 2308 m3/hari, steam 663 ton/hari dan listrik 150 KVA, pembiayaan modal tetap Rp. 16,17 M dan modal kerja Rp. 3,3M, hasil penjualan Rp. 23,69 M, investasi total pada akhir masa konstruksi Rp. 21,32M, laju pengembalian modal 17,83%, waktu pengembalian modal 4,41 tahun, titik impas 40,52% dan masa konstruksi 2 tahun. Secara keseluruhan dipandang dari segi teknis maupun ekonomi dapat dikatakan pra rencana pabrik High Fructose Syrup dari menir dapat dilanjutkan ke dalam tahap perencanaan.

The purpose of the establishment of the factory was to meet the needs of fructose syrup in the country, increasing the country's foreign exchange in the industrial sector, expanding the productivity volume especially for industries that requires fructose syrup. The process of making high fructose syrup (HFS) from the menir by isomerization was divided into three stages: pretreatment, hydrolysis, and isomerization using glucoisomerization enzymes. Pre-feasibility aspects of HFS factory plans were: (1) economic aspects Pay Out Time, Rate of Return and Break even Point; (2) process aspects; (3) technical aspects; (4) aspects of company management. The pre plan of the HFS factory in planning was semi-continuous, 24 hours per day with 300 working days/year, production capacity of 9475.76 tons of syrup/year, raw material of 2,700 tons of menir/year, water consumption of 2,308 m3/day, steam of 663 tons/days and 150 KVA electricity, fixed capital financing of Rp. 16.17 M and working capital of Rp. 3.3M, sales of Rp. 23.69 M, Rp. 21.32M of total investment at the end of the construction period, 17.83%, rate of return on capital, 4.41 years of capital payback period, 40.52% break-even point and 2 year construction period. Overall, in terms of technical and economic aspects, it could be said that the pre-plan of the High Fructose Syrup plant from menir could be continued into the planning stage.
Pengaruh Model Pembelajaran Problem Based Learning (Pbl) Dengan Menggunakan Media Power Point Terhadap Hasil Belajar Siswa pada Materi Larutan Asam Basa
Authors: Nainggolan Bajoka , PW Dimas Nugroho 
Published: May 2019

Penelitian quasi eksperiment ini bertujuan mengetahui pengaruh hasil belajar siswa yang diajar menggunakan model PBL(Problem based learning)dengan media power pointdan tanpa media power point pada larutan asam basa. Populasi seluruh siswa (3 kelas XI) SMA Budi Agung Medan ,sampel diambil 2 kelas secara random sampling (XIIPA3kelas eksperimen dan XI IPA2kontrol). Pengumpulan data menggunakan instrumen tes bentuk objektif sebanyak 22 soalsudah valid. Pengolahan data diperoleh rata-rata pre-test kelas eksperimen 26,07 dan kelas kontrol33,03; rata-rata post-testeksperimen 64,5 dan kontrol 63,21. Uji normalitas berdistribusi normal χ2 hitung <χ2 tabel, ; kedua sampel homogen (Fhitung< Ftabel;1,077455< 1,9775). Gain hasil belajar kimia siswa eksperimen > kelas kontrol;52,38% >45,72 %. Uji hipotesis pada α = 0,05 diperoleh thitung> ttabel: 0,949>0,6794;artinya Ha diterima dan Ho ditolak. Disimpulkan bahwa hasil belajar kimia siswa pada materi larutan asam basa dengan PBL dan media power point lebih tinggi dari PBL tanpa media power point , dan aspek kognitif yang paling berkembang adalah C3 (aplikasi) sebesar 58 %.

This quasi-experimental study aimed to determine the effect of student learning outcomes taught using problem based learning (PBL) models with and without power points media and on acid-base solutions. The population was all students (3 XI grade) of SMA Budi Agung Medan. The samples were 2 classes taken by random sampling (XI IPA3 as experiment class and XI IPA2 as control class). The data were collected using objective test as the instrument with 22 valid data. The data processing obtained was the average pre-test experimental class of 26.07 and the control class of 33.03; mean post-test experiment of 64.5 and controls of 63.21. The normality test was normally distributed χ2 count <χ2 table; both samples were homogeneous (F count <Ftable; 1.077455 <1.9775). Gain of chemistry learning outcomes of experimental students was higher than control class; 52.38%>45.72%. Hypothesis testing at α = 0.05 was obtained by using t count> t table: 0.949> 0.6794; meaning Ha was accepted and Ho was rejected. It was concluded that students' chemistry learning outcomes in basal acid solution material with PBL and power point media were higher than PBL without power point media, and the most developed cognitive aspect was C3 (application) by 58%.
Penerapan Model Pembelajaran Kooperatif Wordsquare untuk Meningkatkan Prestasi Belajar Kimia Siswa Pada Pokok Bahasan Koloid Di Kelas XI SMAS Cerdas Murni
Authors: Erlina Erlina Erlina , Rona Rona Rona , Efridah Efni , Rizki Rohazmy 
Published: May 2019

Penelitian tentang penerapan model pembelajaran kooperatif Word Square untuk meningkatkan prestasi belajar kimia siswa pada pokok bahasan koloid di kelas XI SMASCerdas Murrni yang telah dilaksanakan pada bulan Mei 2015.Tujuan dari penelitian adalah untuk mengetahui apakah penerapan model pembelajaran kooperatif Word Square dapat meningkatkan prestasi belajar kimia siswa pada pokok bahasan koloid.Sampel dalam penelitian ini adalah kelas XI IPA 1 dan kelas XI IPA 2 T.A 2015/2016yang telah diuji kehomogenannya.Kelas XI IPA 1 diambil secara acak sebagai kelas eksperimen dan kelas XI IPA 2 sebgai kelas kontrol.Pembelajaran kooperatif Word Square diterapkan di kelas XI IPA 1.Hasil penelitian menunjukkan bahwa pembelajaran kooperatif Word Square dapat meningkatkan prestasi belajar kimia siswa pada pokok bahasan koloid. Peningkatan prestasi belajarkimia siswa di kelas eksperimen didukung oleh skor gain ternormalisasi (N-Gain) sebesar 0,83.

The study of the application of the Word Square cooperative learning model to improve students' chemistry learning achievement on the subject of colloids in XI grade of SMAS Cerdas Murni had been conducted in May 2015. The purpose of the study was to determine whether the application of Word Square cooperative learning models could improve student chemistry learning achievement on the subject of colloid. The samples were XI IPA 1 and XI IPA 2 classes in 2015/2016 which had been tested for their homogeneity. XI IPA 1 was taken randomly as experimental class and XI IPA 2 as control class. Word Square cooperative learning was applied in XI IPA 1 class. The results of the study showed that Word Square cooperative learning could improve students' chemistry learning achievement on colloidal topics. The increase of chemistry learning achievement of students in the experimental class was supported by a normalized gain score (N-Gain) of 0.83.
Pengembangan Modul Berbasis Inkuiri Terbimbing Pada Materi Hukum Dasar Kimia Di Sekolah Menengah Atas
Authors: Pratiwi Intan , D Ratu Evina , Silaban Ramlan , Suyanti Retno Dwi 
Published: May 2019

Penelitian ini bertujuan untuk mengetahui : 1) bahan ajar materi hukum dasar kimia pada buku yang digunakan di SMA/MA memenuhi kriteria Badan Standar Nasional Pendidikan (BSNP); 2) modul yang dikembangkan memenuhi kriteria BSNP; 3) uji coba modul berbasis inkuiri terbimbing dapat meningkatkan hasil belajar siswa; 4) hasil belajar siswa menggunakan modul berbasis inkuiri terbimbing lebih besar dari harga KKM. Penelitian ini dilakukan terhadap siswa kelas X SMA Negeri 14 Medan. Populasi yaitu seluruh siswa kelas X SMA Negeri 14 Medan Tahun Ajaran 2016/2017. Sampel ditetapkan dengan cluster random sampling dengan mengambil 1 kelas sebagai kelas eksperimen. Metode penelitian yang digunakan adalah metode penelitian dan pengembangan (Research and Development). Hasil penelitian menunjukkan : (1) bahan ajar pada materi hukum dasar kimia pada buku yang digunakan di SMA/MA sudah memenuhi kriteria BSNP dengan kriteria cukup valid dan tidak perlu revisi; (2) modul yang dikembangkan memenuhi kriteria BSNP, data yang diperoleh yaitu kelayakan isi = 3,68; kelayakan bahasa = 3,57; kelayakan penyajian = 3,70; kelayakan kegrafikaan = 3,50 dengan kriteria valid dan tidak perlu revisi; (3) uji coba modul berbasis inkuiri terbimbing dapat meningkatkan hasil belajar siswa sebesar 80%; (4) hasil belajar siswa menggunakan modul berbasis inkuiri terbimbing lebih besar dari harga KKM.

The research aimed to find: 1) teaching materials for basic chemical law material in books used in high school/MA meeting the criteria of the National Education Standards Agency (BSNP); 2) the modules developed meeting BSNP criteria; 3) trial of guided inquiry-based modules which can improve student learning outcomes; 4) student learning outcomes using guided inquiry-based modules which are greater than KKM scores. This research was conducted on class X students of SMAN 14 Medan. The population was all students of class X SMAN 14 Medan FY 2016/2017. The sample was determined by cluster random sampling by taking 1 class as an experimental class. The research method used was the research and development method (Research and Development). The results of the study showed: (1) teaching materials in the basic chemical law material in the books used in the SMA / MA met BSNP criteria with criteria that were quite valid and did not need to be revised; (2) the module developed met the BSNP criteria; the data obtained were content eligibility = 3.68; language eligibility = 3.57; presentation eligibility = 3.70; feasibility of graft = 3.50 with valid criteria and did not need any revision; (3) pilot guided inquiry-based modules could improve student learning outcomes by 80%; (4) student learning outcomes using guided inquiry-based modules were greater than KKM scores.
Analisis Kelayakan Buku Panduan Praktikum Kimia Kelas XII Semeter II Berdasarkan BSNP Sesuai Kurikulum 2013
Authors: Harahap Jusmasari , Sari Novita , Pane Salahuddin Al-Yubi , Nuraini Nuraini 
Published: May 2019

Penelitian ini bertujuan untuk mengetahui tingkat kelayakan buku panduan praktikum kimia kelas XII semester II berdasarkan BSNP sesuai kurikulum 2013. Metode penelitian yang digunakan adalah deskriptif kualitatif. Sampel dalam penelitian ini adalah sebuah buku panduan penuntun praktikum kimia kelas XII semester II pengarang Sri Wahyuni dan Dewi Suryana penerbit Erlangga. Instrument penelitian ini adalah lembar penilaian kelayakan buku panduan praktikum kimia berdasarkan BSNP. Instrumen yang digunakan sudah distandarisasi oleh ahli. Analisis yang diperoleh menunjukkan ada empat kategori yang di analisis persentasenya yakni kelayakan isi 77,27 %, kelayakan bahasa 100%, kelayakan penyajian 79,16%, dan kelayakan kegrafikan 95%. Berdasarkan hal tersebut maka buku panduan praktikum kimia kelas XII semester II tersebut sesuai dengan BSNP dan layak digunakan akan tetapi perlu dikembangkan sesuai kurikulum 2013, mengingat buku panduan praktikum tersebut masih menggunakan kurikulum KTSP.

The aim of this research was to find the feasibility level of the second semester of grade XII chemistry practicum guidebook based on BSNP according to the 2013 curriculum. The research method employed was qualitative descriptive. The sample in this study was a chemistry practical guidebook grade XII semester II written by Sri Wahyuni ​​and Dewi Suryana with Erlangga publisher. The research instrument was the feasibility assessment sheet for the chemical practicum guide book based on BSNP. The instruments used were standardized by experts. The analysis obtained showed that there were four categories analyzed by 77.27% of eligibility, 100% of language feasibility, 79.16% of presentation feasibility, and 95% of graphic eligibility. Based on the result obtained, the second semester of grade XII chemistry practicum guidebook was in accordance with BSNP and suitable to use, but it needed to be improved according to the 2013 curriculum, considering that the practical guidebook was still used the Education Level Curriculum (KTSP).
Pengaruh E-Learning Berbasis Weblog Dengan Model Kooperatif Jigsaw Terhadap Hasil Belajar Siswa
Authors: Samosir Rafidah Almira , Eddiyanto Eddiyanto , Munthe Eika Abigail 
Published: May 2019

Teknologi dapat digunakan dalam kegiatan pembelajaran di dalam kelas maupun di luar kelas, penggunaan media e-learning berbasis weblog dapat membantu siswa untuk meningkatkan hasil belajar yang lebih baik. Penelitian dilakukan terhadap siswa kelas X SMA Negeri 5 Binjai yang bertujuan untuk mengetahui peningkatan hasil belajar kimia siswa yang dibelajarkan dengan e-learning berbasis weblog dengan model kooperatif tipe jigsaw pada pokok bahasan hukum-hukum dasar kimia. Penelitian ini menggunakan rancangan experimen sungguhan (True Experiment Design) pada bagian Pretest-Posttest Control Group Design. Penelitian dilakukan terhadap siswa kelas X SMA Negeri 5 Binjai T.A 2015/2016. Sampel diambil 2 kelas yaitu 6 kelas menggunakan random sampling sebagai kelompok eksperimen dan kelompok kontrol. Data yang sudah dikumpulkan kemudian di analisis menggunakan uji-t dan gain. Berdasarkan hasil analisa data, terdapat peningkatan hasil belajar siswa kelas eksperimen sebesar 71,3% sedangkan Peningkatan hasil belajar siswa kelas kontrol sebesar 62,3% dengan selisih kenaikan 9%. Maka dapat disimpulkan bahwa hasil belajar kimia siswa yang dibelajarkan dengan e-learning berbasis weblog sebagai dengan model kooperatif tipe jigsaw lebih baik dibandingkan dengan hasil belajar kimia siswa yang hanya dibelajarkan dengan model kooperatif tipe jigsaw.

Technology can be used in learning activities inside or outside the classroom. The use of weblog-based e-learning media can help students improve learning outcomes. The study was aimed to determine the improvement of students' chemistry learning outcomes which was learned by weblog-based e-learning with a jigsaw cooperative model on the subject of basic chemical laws. It was conducted on Class X of SMA 5 Binjai AY 2015/2016 with true experimental research design in the Pretest-Posttest Control Group Design section. The sample was two classes selected from 6 classes using random sampling as the experimental and the control groups. The data were analyzed using t-test and gain. Based on the results of data analysis, there was an increase in the experimental class learning outcomes with 71.3% while the increase in learning outcomes of the control class was 62.3% with a difference of 9%. So it could be concluded the chemistry learning outcomes of students taught by weblog-based e-learning as a Cooperative Jigsaw Model were better than those taught by the jigsaw cooperative model.