The objective of this research is to find out the types of grammatical errors made by the tenth grade students of SMAN 12 Pekanbaru in the academic year 2018/2019 in writing recount texts. This research used a descriptive method. The participants of this research were 65 students of class X MIPA 3 and class X IPS 6 of SMAN 12 Pekanbaru. The students were selected to be the sample using cluster …
The research was aimed to investigate whether problem-based learning (PBL) method can affect students’ speaking ability. The research was conducted at the first year exact science students of SMA Negeri 8 Pekanbaru. The number of the students was 324 in 9 classes. Due to the large population, the cluster random sampling was used to determine the sample, then lottery taking is applied with the…
Titanium dioxide (TiO2) is a good photocatalyst and canapplied for the degradation of organic compounds. In order to increase the performance of TiO2, modification needswith other compounds, for example composite TiO2-SiO2. The purpose of this study is determine the functional groups that characterize by Fourier Transform Infrared (FTIR) and determinephase and crystalline size as well as that…
Biodegradable plastic is an environmental friendly plastic made from starch and cellulose. Starch and cellulose are extracted from cassava peel and peanut shell. The purpose of this research was to get the best formulation of cassava peel starch and peanut shell as cellulose on physical and mechanical properties of biodegradable plastics. This research was conducted experimentaly by using compl…
Composite TiO2-SiO2 is one of the widest used as photocatalysts, especially in the treatment of pollutants and wastes. The aim of this research is to synthesized composite TiO2-SiO2 by sol-gel method using the bagasse ash which has a high of SiO2 content, which is between 46-81%. Synthesis the composite was carried out by following the research methods of Yusefah and Amaria in 2014 using calcin…
The main objective of study was to examine the correlation between reading speed and reading comprehension in narrative texts of the second year students of SMA N 1 Mandah. To collect the data a reading speed test and a reading comprehension test were administered. The reading speed test was in a spoken form and the reading comprehension test was in the form of multiple choice questions. A clus…
The purpose of this study was to obtain the best ratio on quality and sensory nugget made from catfish and young jackfruit. The research method used a completely randomized design with four treatments and four replications. The treatments consisted of PN1 (70 meat of catfish: 30 young jackfruit), PN2 (60 meat of catfish: 40 young jackfruit), PN3 (50 meat of catfish: 50 young jackfruit), PN4 (40…
This research is aimed at developing English instructional tools (lesson plan and students’ worksheet) by applying inquiry-based learning as one of the learning model suggested in the 2013 curriculum and to find out the validity level of developing English lesson plan and students’ worksheet by applying inquiry-based learning in teaching recount texts for the first year students of SMA. Thi…
Composites are compiled at least by two different materials, each acting as a matrix and reinsforce (amplifier). In this research hydroxyapatite plays as a matrix whereas chitosan as reinforce. In this study, the composite HAp-chitosan is synthesized using Geloina coanxans as a source of kalisium using two types of solvent water and HNO3, (NH4)2HPO4 as a source of Fospat and is composited with …
Jackfruit seeds and durian seeds are agricultural waste containing high starch, which can be used as raw material for biodegradable plastic. The purpose of this research was to get the best formulation on the making of biodegradable plastic based on starch of jackfruit seed and starch of durian seed. This research was conducted experimentaly by using complete randomized design (CRD) which consi…
Patin (Pangasius hypopthalmus) is one of the economically important freshwater fish in Indonesia. Patin waste as a by-product of smoking fish industry can be used as an ingredient of feed and oil in order to increase the community's economy. Polyunsaturated fatty acid in patin oil causes the oil susceptible to oxidation reactions. Therefore, fish oil needs to be added antioxidants. One of the n…
Pulp is a material in The form of fibrous processed by lignocellulose by mechanical, chemical and semichemical processes for the manufacture of paper, cardboard, fiberboard, rayon, and other cellulose derivatives. The raw material used is rice husk (Oryza sativa). The purpose of this research is to determine the comparison of rice husk pulp yield, the effect of variations in concentration and c…
The purpose of this research was to get the best combinaton of okra and pineapple fruit on the quality and sensory characteristic of fruit leather. This research was conducted experimentally by using a complete rendomized design (CRD) which consist of four treatments and four replicatesions. Data obtained were statistically analyzed by using Analysis of Variance and continued with Duncan’s Ne…
The purpose of this research was to obtain the best formulation of batter with the concentration of gum xanthan in making of popcorn chicken. The research design was factorial complete random sampling with six combination treatments and three replications, total of 18 trial units. The treatments consist of T1G1 (sago starch 50 : rice flour 50, 0,5% concentration gum xanthan), T1G2 (sago starch …
Cocoghurt is one type of fermented milk from raw coconut milk produced by using the starter Lactobacillus casei subsp. casei R-68 and Streptococcus thermophilus FNCC 0040. The purpose of this study was to obtain the best sucrose concentration on the quality of cocoghurt. This study used a Completely Randomized Design (CDR) with five treatments and three replications. The treatments performed we…
Cocoghurt is one type of fermented milk made from raw coconut milk which is produced by using the starter Lactobacillus casei subsp. casei R-68 and Streptococcus thermophilus. The purpose of this study was to obtained the best concentration of skim milk in making cocoghurt by using a starter combination of Streptococcus thermophilus and Lactobacillus casei subsp. casei R-68. The research was co…
The purpose of this study was to characterize the Sidempuan’s salacca seed activated carbon using sodium carbonate (Na2CO3) activator with variations in activator concentration 0; 2.5; 5 and 7.5% by weight ratio of carbon: activator is 1: 10, the quality of activated carbon adsorbent Sidempuan’s salacca seeds was determined based on SNI (06-3730-1995). The best characterization of adsorbent…
The aim of this study was to obtain the best type of stabilizer for the quality of ice cream produced. This research was conducted experimentally using a randomized complete design with five treatments and three replications, followed by the DNMRT test at 5% level. The treatments in this study were CK1 (CMC: carrageenan 0: 1), CK2 (CMC: carrageenan 1: 0), CK3 (CMC: carrageenan 1: 1), CK4 (CMC: …
Sago palm bark is potentially used as adsorbent because it contains cellulose and lignin. The purpose of this study were to prepare and characterize the adsorbent of sago palm bark powder and activated carbon and determine the quality of adsorbent based on SNI 06-3730-1995. The powder and the activated carbon from sago palm bark are activated through the addition of sodium carbonat (Na2CO3) act…
The purpose of this study was to get the best combination of of red palm oil and olein in a mixture of patin fish oil to the quality and sensory mayonnaise produced according to the Indonesian National Standard. The research used experimental method by using a completely randomized design (CRD) with five treatments and three replications. The treatments were MIS0: 100% patin fish oil control), …