PENGARUH MASSA GLISEROL TERHADAP TITIK LELEH PLASTIK BIODEGRADABLE DARI PATI UBI KAYU (THE GLYCEROL MASS EFFECT TOWARD MELTING POINT OF BIODEGRADABLE PLASTIC FROM WOOD CASSAVA STARCH)

Abstrak. Plastik biodegradable berbahan pati ubi kayu dan serat batang ubi kayu telah di buatdengan penambahan gliserol. Dalam penelitian ini bertujuan untuk mengetahui pengaruhpenambahan massa gliserol terhadap titik leleh plastik biodegradable. Pengujian titik leleh dilakukandengan menggunakan alat Melting block. Sejumlah kecil sampel digerus sehalus mungkin. Sampeldimasukkan kedalam pipa kapiler hingga serbuk sampel yang ada di pipa kapiler setinggi 0,5 cm laludi masukkan dalam melting block. Data yang dihasilkan dalam penelitian ini menunjukkan bahwatitik leleh tertinggi dihasilkan dari pati tanpa penambahan gliserol yaitu sebesar 221,670C. hal ini dikuatkan dengan pengujian FTIR pada masing-masing sampel plastik sehingga menunjukkan titikmaksimum kandungan gugus OH berada pada film plastik dengan tanpa penambahan gliserol yaitusebesar 3130 cm-1.Kata Kunci: Pati ubi Kayu, Gliserol, Titik Leleh, plastik biodegradabelAbstract. Biodegradable plastic from cassava starch and cassava stem fibers have been made withthe addition of glycerol. This study has aim to determine the effect of adding glycerol to the meltingpoint of the mass of biodegradable plastic. Tests were performed by using Melting block tool. A smallamount of samples was crushed as smooth as possible. Samples were added into the capillary tubeuntil the sample powder in the capillary tube reached 0.5 cm then included in the melting block. Thedata generated in this study showed that the highest melting point of the starch produced without theaddition of glycerol in the amount of 221.670 C. This was reinforced by FTIR testing on each plasticsample that show the point of maximum plastic content of OH groups were in plastic film without theaddition of glycerol, that was 3130 cm-1.Keywords : Wood cassava starch, glycerol, melting point,Biodegradable plasti

Analisa Faktor Penyebab Cacat Produksi Pengisian Gas Oksigen : Studi Kasus di PT SAMATOR Gas Kota Batam

The focus of this research is to know factors causing production defects in the filling of oxygen gas in the process of filling storage tanks with specification 99.60% - 99.9% pure oxygen at PT. Samator. This study found several dominant factors that affect the quality of oxygen purity that has been set company. Production output samples were taken in november 2017 for 25 working days with replication system in group and sub group.The data feasibility test is expressed by the adequacy test and data uniformity to ensure that data is eligible for further processing. Data analysis on the calculation of process capability shows the value of Cp <1.33 means the ability of the process of filling the storage tank with 99.60% - 99.9% pure oxygen specification shows the ability is still low so that the quality of the product is in doubt.This result raises the suspicion of factors causing potential defect product as the cause of the low ability process, to know the cause of the low ability of process then fishbone diagram accompanied by chi square statistic test to validate the alleged defect of production find 6 dominant factor that is raw material of air and water content) , Employee Kopetensi, Standard operational procedures that have not been raw, machine maintenance, engine setup and temperature

Pengaruh Metode Bermain terhadap Hasil Belajar Heading Sepak Bola pada Peserta Didik SMP

The method used is an experimental method to study the form of true experimental design. The population in this study is a class VIII as much as 8 classes. The samples in this study using purposive sampling technique, as many as 70 people were divided into class VIII dam D totaling 35 persons as a class control while class VIII G totaled 35 as the experimental class. Data was analyzed using computerized systems as well as analysis by using t-test Based on t-test results on the class dick and experimental value 0,000 p value <0.05 then Ho is rejected (Ha acceptable) means that there is a significant improvement between the before and after treatment, in which the mean value of the difference in the experimental class (28.2) greater than the control group (8.7)

Pemanfaatan Berbagai Sumber Pupuk Kandang sebagai Sumber N dalam Budidaya Cabai Merah (Capsicum Annum L.) di Tanah Berpasir

The aim of the research was to examine the effects of various sources of manure as a nitrogen sources on the cultivation of red Chili. The experiment was conducted using experimental methods which are arranged in Complete Randomized Design (CRD) comprised 4 treatments, namely 90 ton of cow manure per hectare, 60 ton of goat manure per hectare, 36 ton of chicken manure per hectare and standard fertilizers (1 ton NPK/hectare and 20 tons of chicken manure/hectare).The results showed that treatment of manure and standards provide similar effects to the real plant height, weight fresh fruit and fruit diameter, but a significantly different effect on the weight of fresh and dry weight of plant biomass, number of fruits per plant, fruit lenght and production red Chilies. Treatment of 90 tons of cow manure per hectare gave the bighest production of red Chili that is 302.58 grams per plant, but did not differ significantly with treatment of 36 tons of chicken manure per hectare

Penerapan Model Pembelajaran Coorperative Learning Examples Non Examples dalam Pembelajaran Sosiologi untuk Meningkatkan Hasil Belajar Siswa Kelas X10 Semester 2 SMA N Kebakkramat Tahun Ajaran 2016/2017

Rachmad Bayu Prasetyo. K8413063. PENERAPAN MODEL PEMBELAJARAN COORPERATIVE LEARNING EXAMPLES NON EXAMPLES DALAM PEMBELAJARAN SOSIOLOGI UNTUK MENINGKATKAN HASIL BELAJAR SISWA KELAS X10 SEMESTER 2 SMA N KEBAKKRAMAT TAHUN AJARAN 2016/2017. Skripsi, Surakarta: Fakultas Keguruan dan Ilmu Pendidikan. Universitas Sebelas Maret, Juli 2017.Penelitian ini dilakukan dengan tujuan untuk menerapkan model pembelajaran Coorperative Learning tipe Examples Non Examples dalam pembelajaran sosiologi untuk meningkatkan hasil belajar siswa kelas X10 Semester 2 SMA N Kebakkramat Tahun Ajaran 2016/2017.Penelitian ini merupakan Penelitian Tindakan Kelas (PTK). Penelitian ini dilaksanakan dalam dua siklus, setiap siklus terdiri dari tahap perencanaan, tahap pelaksanaan tindakan, tahap interpretasi, tahap analisis dan refleksi atas tindakan yang telah dilakukan. Dalam setiap sikus dilakukan selama tiga pertemuan. Subjek penelitian adalah siswa kelas X10 SMAN Kebakkramat tahun ajaran 2016/2017 yang berjumlah 35 siswa. Sumber data berasal dari guru dan siswa. Teknik utama dalam pengumpulan data menggunakan observasi dan tes tertulis, sementara teknik pendukung dengan menggunakan wawancara dan dokumentasi. Analisis data dengan menggunakan teknik analisis deskriptif kuantitatif.Hasil penelitian menunjukkan bahwa penerapan model pembelajaran Coorperative Learning Examples Non Examples dapat meningkatkan hasil belajar siswa pada mata pelajaran Sosiologi kelas X10 SMAN Kebakkramat. Hal ini dibuktikan dengan peningkatan hasil belajar prasiklus, siklus I, dan siklus II. Dalam prasiklus, nilai rata-rata adalah 57,2 dalam skala 0-100. Kemudian meningkat menjadi 73 pada siklus I, dan 83,6 pada siklus II. Jumlah siswa yang mendapat nilai diatas KKM (75) pada pra siklus adalah 0 siswa (0%), kemudian pada siklus I jumlah siswa yang mendapat nilai diatas KKM meningkat menjadi 17 siswa (48,6%), dan pada siklus II jumlah siswa yang mendapat nilai diatas KKM menjadi 100 siswa (100%)

The Effect of Burnout Towards Organizational Citizenship Behaviour, Mediated by Job Satsifaction in XYZ Company, Surabaya

The purpose of this research was to investigate the effect of Burnout towards Organizational Citizenship Behavior, mediated by Job Satisfaction in XYZ Company, Surabaya. The data gathered using simple random sampling method and the questionnaires obtained from 80 respondents whom work as permanent employee in XYZ Company. Among 80 Questionnaires obtained, only 70 Questionnaires are valid and able to be analyzed. Then the data being analyzed by Multiple Linear Regression and Tested for mediation. The result shown that Burnout simultaneously and individually having significant impact toward OCB. However in testing for mediation, Job Satisfaction is found out not to be the mediating factor between the relationships of Burnout towards OCB

Tingkat Pemahaman Konsep Siswa pada Materi Momen Gaya

Penelitian ini bertujuan untuk mengungkap tingkat pemahaman konsep siswa dan faktor penyebabnya tentang konsep momen gaya. Sejumlah 71 siswa terdiri dari 36 siswa kelas XI IPA dan 25 siswa kelas XII IPA diberikan tes tertulis terbuka terkait materi momen gaya. Hasil tes tertulis dikategorikan menjadi respon ilmiah, respon tidak ilmiah, dan tidak merespon. Diambil sebanyak 30 siswa yang memiliki respon yang dominan untuk dilakukan wawancara dan pengambilan sampel didasarkan pada opportunity sampling. Berdasarkan hasil analisis kualitatif tes tertulis dan wawancara disimpulkan bahwa (1) respon tak ilmiah lebih mendominasi pada kedua kelas dan (2) penyebabnya dipengaruhi oleh beberapa faktor yaitu: intuisi, kurang pemahaman, fragmentasi, dan apresiasi konseptual