scholarly journals Investigation on the Dielectric, Physical and Chemical Properties of Palm Oil and Coconut Oil under Open Thermal Ageing Condition

2016 ◽  
Vol 11 (3) ◽  
pp. 690-698 ◽  
Author(s):  
Nur Aqilah Mohamad ◽  
Norhafiz Azis ◽  
Jasronita Jasni ◽  
Mohd Zainal Abidin Ab Kadir ◽  
Robiah Yunus ◽  
...  
Keyword(s):  
Palm Oil ◽  
Chemical Properties ◽  
Coconut Oil ◽  
Thermal Ageing ◽  
Physical And Chemical Properties ◽  
Ageing Condition ◽  
Physical And Chemical ◽  
And Chemical Properties

scholarly journals Formulation and Evaluation of Sun Block Lotion Made from Virgin Coconut Oil (VCO) with the addition of the Extract of Telang Flower (Clitoria ternatea, L) and Pandan Leaves (Pandanumusa paradisiaca, L)

2020 ◽  
Vol 4 (1) ◽  
pp. 54-59
Author(s):  
Nia Boru Ritonga ◽  
Rini Rini ◽  
Tuty Anggraini
Keyword(s):  
Chemical Properties ◽  
Coconut Oil ◽  
Plate Count ◽  
Physical And Chemical Properties ◽  
Virgin Coconut Oil ◽  
Clitoria Ternatea ◽  
Total Plate Count ◽  
Phytochemical Components ◽  
Physical And Chemical ◽  
And Chemical Properties

Telang flowers (Clitoria ternatea, L) and pandan leaves (Pandanus paradisiaca) are plants that contain phytochemical components that are able to block sunlight from exposing the skin. While Virgina Coconut Oil (VCO) is able to moisturize and soften the skin. This study aims to determine the best formulation in protecting sunlight in application to the skin, as well as knowing the physical and chemical characteristics of skin lotion. This research uses an exploratory method with 2 treatments and 3 replications. The treatment is the addition of telang flower extract and pandan leaf extract to the VCO skin lotion. Evaluation is carried out on the physical and chemical properties and the level of panelist preference. The results showed different results from the two formulations, the highest protection value to the sun was the addition of telang flower extracts expressed by SPF 20.64, the antioxidant activity of 81.66%, pH of 6, 0.012% free fatty acids, a specific gravity of 0.94, 34880 cP viscosity, 65.25% stability, 6.0 cm spreadability, total plate count of  1.3 x 10-10 cfu / ml.

Karakterisasi Sifat Fisik Kimia Biodiesel dari Transesterifikasi Enzimatis dan Pengaruhnya terhadap Emisi Gas Buang

2016 ◽  
Vol 8 (15) ◽  
pp. 27-36
Author(s):  
Ageng Priatni ◽  
Yuni Adiningsih ◽  
Fitriani Fitriani
Keyword(s):  
Specific Gravity ◽  
Pseudomonas Fluorescens ◽  
Palm Oil ◽  
Chemical Properties ◽  
Calorific Value ◽  
Exhaust Gas ◽  
Physical And Chemical Properties ◽  
Exhaust Gas Emission ◽  
Physical And Chemical ◽  
And Chemical Properties

The background of this research is to use of fuel with natural resources and renewable plant-based that can reduce air pollution. This research conducted in order to determine the physical and chemical properties of biodiesel from palm oil and the effect on exhaust gas emission in diesel engines. Biodisel producted by enzymatic transesterification between  methanol and crude palm oil by pseudomonas fluorescens lipase as a catalyst. It’s characterized then blended with petroleum diesel with biodiesel volume ratio 10%:90% petroleum diesel (B10), biodiesel 20%:80%, petroleum diesel (B20) and biodiesel 30%:70%, petroleum diesel (B30) with diesel oil as a comparison (B0 ) is then applied and tested on a diesel engine exhaust gas emissions (SO2,NOX,CO,total particulate matter and opacity). The characterization of physical and chemical properties of biodiesel as follows: specific gravity 0.9068, kinematic viscosity 28.26 mm2/s, 50.5°C flash point , cluod point 18°C, the water content of 0.8% vol, residue carbone 0.941% wt and calorific value 9372.8 Cal/lb. Fuel mixture of biodiesel and petroleum diesel (B30) leads to a decrease in exhaust emissions of CO by 96.88 % , 18.35% of the total particles and B20 causes a decrease in SO2 emissions by 100 % of petroleum diesel. While a mixture of biodiesel and petroleum diesel (B30) leads to increase in NO2 emissions by 265.96% and did not give any influence on the opacityABSTRAKLatar belakang penelitian ini adalah penggunaan bahan bakar dengan sumber daya alam nabati yang dapat terbarukan (renewable) dan pengurangan pencemaran udara. Sedangkan tujuan penelitian untuk mengetahui sifat fisik kimia biodiesel dari CPO dan pengaruhnya terhadap penurunan emisi gas buang pada mesin diesel. Biodiesel diperoleh dengan transesterifikasi enzimatis antara CPO dan Methanol dengan enzim lipase Pseudomonas Fluorescens sebagai katalis. Biodiesel yang dihasilkan kemudian dikarakterisasi dan kemudian dicampur dengan minyak solar dengan perbandingan volume biodiesel 10%: minyak solar 90% (B10), biodiesel 20%:minyak solar 80% (B20) dan biodiesel 30% : minyak solar 70% (B30) dengan minyak solar sebagai pembanding (B00). Aplikasi dilakukan pada mesin diesel dan diuji emisi gas buangnya (SO2, NOX, CO, Total partikel dan Opasitas). Karakterisasi sifat fisik kimia dari biodiesel sebagai berikut : specific gravity 0,9068, kekentalan kinematik 28,26 mm2/s, titik nyala 50,5°C, cluod point 18°C,  Kadar air 0,8%vol, residu karbone 0,941% wt dan calorific value 9372,8 Cal/gr. Bahan bakar campuran antara biodiesel dan minyak solar (B30) menyebabkan terjadinya penurunan emisi gas buang CO sebesar 96,88%, total partikel sebesar 18,35% dan B20 menyebabkan penurunan emisi gas SO2 sebesar 100% dari minyak solar. Campuran antara biodiesel dan minyak solar (B30) menyebabkan terjadinya kenaikan emisi gas NO2 sebesar 265,96% serta tidak memberikan pengaruh apa-apa terhadap opasitas.Kata Kunci : Biodiesel, CPO, Emisi gas Buang, Enzimatis, Mesin Diesel 

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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