Pengaruh Penggunaan Model Pembelajaran Kooperatif Tipe Teams Games Tournament dan Model Pembelajaran Ekspositori terhadap Hasil Belajar Pendidikan Kewarganegaraan

This study aims to determine the differences learning outcome of Civics Subject between Teams Games Tournament learning model classes with expository learning model classes. The study results indicate that learning outcome of Civics Subject are taught by using Teams Games Tournament learning model trend higher while those are taught by using expository learning model trend lower. The Z test results obtained Zc = 2,02338385 and Zt= 1,645. From the Z test results, can be concluded that Zc> Zt, means there are differences in learning outcome of Civics Subject between Teams Games Tournament learning model classes with expository learning model classes. Based on Z test results, can be concluded that Teams Games Tournament learning model is more influence than expository learning model on the learning outcome of Civics Subject

Analisis Kemampuan Komunikasi Matematik Siswa SMP Mutiara 1 Bandung pada Materi Bentuk Aljabar

The purpose of this study was to describe the mathematical communication skills of students of SMP 1 Bandung Junior High School class VII and examine errors in solving test questions regarding the material in the form of algebra. The research method used is the description method. The subject of the research was conducted on 29 students of Grade 1 Pearl Junior 1 Bandung Bandung. The test questions given are in the form of 6 questions. The results showed that mathematical communication skills as a whole were moderate and there were 1 indicator that entered the criteria very well, namely for indicators to rewrite information in the form of images into the language of mathematics. (Well); indicators state the problem of mathematical models of story forms into mathematical symbols, (Good); the indicator states what is known and asked according to the mathematical formula (Good), the indicator completes what is known and what is asked daily events using mathematical formulas (Good). And 1 indicator which includes sufficient criteria, namely the indicator states the completion of the mathematical model of drawing with the right solution idea. And it can be seen that the average score of all questions from all students is included in the good criteri

Pengaruh Penambahan Limbah Ekstraksi Buah Kelapa Sawit terhadap Pembuatan Paving Block

The waste of palm know as waste of palm oil extraction, which is recently available abundantly. One of efforts in using this waste material is as additive in paving block industry. This research presents the efficiency of waste of palm oil extraction as an additive material of paving block at optimum mix composition regarding the paving block compressive strength, absorption and resistance to chemicals.The composition of waste of palm oil extraction was 0%, 2,5%, 5%, 7,5%, 10% and 12,5% by weight of cement. Research results showed that the use of waste of palm oil extraction as an additive affect the quality of the paving block. The best composition of paving block in this research was the amount of waste of palm oil extraction can be added to paving block as much as 7,5%. It was shown from the value of compressive strength of 7, 14, and 28 days increased to reach 18,3 MPa, water absorption is 5,9%, and resistant to sodium sulfate. Based on SNI 03-0691-1996, paving block generated from this treatment fitted in C quality of paving block and can be used for parking area

Rancang Bangun Aplikasi Penjadwalan Proyek pada PT. Bintang Timur Nangendi dengan Menggunakan Crithical Path Method

PT. Nangendi Eastern Star is a company engaged in construction that handles multiple building projects from government and private sources. During this time, companies are experiencing delays in completing the project scheduling. This is because in determining the scheduling time projects that are still based on the approximate part of the project manager. So companies are experiencing delays in completing projects already scheduled.Based on these problems, they invented scheduling information system projects using methods Critical Path Method. In such systems aim to schedule in accordance with determining the critical path of a project so that the project manager can carry out the project activities in accordance with the project schedule known critical path with Critical Path Method.The information system is made to produce a report that displays the scheduling of project activities on the critical path. Under the system of information created and a series of trials that have been done, the company can find information needed, especially concerning the determination of the Critical Path. So that the company can determine where an activity is preferred phase project work

Aplikasi Metode Nonkonvensional Pada Ekstraksi Bawang Dayak

Ekstraksi konvensional pada umumnya membutuhkan waktu yang lama,kurang ramah lingkungan, danberpotensi memicu kerusakan senyawa, sehingga perlu metode alternatifsepertiUltrasound Assisted Extraction (UAE) dan Ultrasound-Microwave Assisted Extraction (UMAE). Tujuan dari penelitian ini adalah untuk mempelajari aplikasi metode UAE dan UMAE pada ekstraksi bawang dayak. Bawang dayak secara tradisional dikenal sebagai salah satu tanaman obat di Kalimantan. Optimasi ekstraksi dengan UAE dilakukan terhadap variabel waktu ekstraksi  dan kuantitas pelarut.Sedangkan pada metode UMAE, optimasi dilakukan terhadap variabel waktu.Hasil penelitian menunjukkan hasil terbaik dengan variable waktu 30 menit dan kuantitas pelarut 240 mL menggunakan UAE.Rendemen ekstraksi dengan metode UAE lebih tinggi daripada UMAE, dimana trend fluktuatif ditunjukkan oleh hasil ekstraksi dengan metode UMA

Penentuan Total Fenol Ekstrak Umbi Bawang Dayak Hasil Ekstraksi Dengan Metode Ultrasound Assisted Extraction (UAE) dan Ultrasonic-Microwave Assisted Extraction (UMAE)

Bawang dayak (Eleutherine americana) merupakan tanaman khas Kalimantan yang memiliki semua kandungan fitokimia antara lain alkaloid, glikosida, flavonoid, fenolik, steroid dan tanin. Senyawa fenolik berpotensi sebagai antioksidan.Ekstraksi senyawa bahan alam secara konvensional membutuhkan waktu yang lama dan dapat memicu kerusakan senyawa sehingga perlu metode yang lebih cepat dan efesien seperti metode Ultrasound Assisted Extraction (UAE) danUltrasound-Microwave Assisted Extraction (UMAE). Tujuan dari penelitian ini adalah untuk mengekstrak dan menentukan kadar senyawa fenolik dalam bawang dayak. Hasil yang optimal didapatkan dari waktu sonikasi selama 30 menit danvolume pelarut sebesar 240 mL.Penggunaan microwave dalam ekstraksi justru menimbulkan degradasi senyawa fenolik. Kata kunci: total fenol, bawang dayak, Eleutherine americana, UAE, UMA