scholarly journals COMPARATIVE STUDY BETWEEN GINGER, CINNAMON AND CHAMOMILE ESSENTIAL OILS (PHYSICAL PROPERTIES, CHEMICAL PROPERTIES AND CHEMICAL COMPOSITION)

2021 ◽  
Vol 6 (5) ◽  
pp. 45-53
Author(s):  
H. R. Mohamed ◽  
Y. A. Ashoush ◽  
Kh. M. Taha ◽  
M. M. Abozid
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Physical Properties ◽  
Essential Oils ◽  
Chemical Properties

A comparative Study on Chemical Composition and Antimicrobial Activity of Essential Oils fromTanacetum parthenium(L.) Schultz. Bip. andTanacetum punctatum(Desr.) Grierson. Leaves from Iran

2017 ◽  
Vol 20 (4) ◽  
pp. 1143-1150 ◽  
Author(s):  
Ali Shafaghat ◽  
Orkideh Ghorban-Dadras ◽  
Majid Mohammadhosseini ◽  
Maliheh Akhavan ◽  
Masoud Shafaghatlonbar ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Comparative Study ◽  
Essential Oils

Comparative study on the chemical composition and biological activities of the essential oils of three Lagochilus species collected from Uzbekistan

2019 ◽  
pp. 1-5 ◽  
Author(s):  
Davlat Kh. Akramov ◽  
Gokhan Zengin ◽  
Sun Chul Kang ◽  
Komiljon Sh. Tojibaev ◽  
Mohamad Fawzi Mahomoodally ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Essential Oils ◽  
Biological Activities

scholarly journals Distribution modeling, soil properties, and variation in essential oils chemical composition of Rhanterium adpressum Coss. & Dur.

2019 ◽  
Vol 5 (2) ◽  
pp. 111-117
Author(s):  
Djilali Tahri ◽  
Fatiha Elhouiti ◽  
Mohamed Ouinten ◽  
Mohamed Yousfi
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Climate Changes ◽  
Chemical Properties ◽  
Soil Samples ◽  
General Distribution ◽  
Maxent Model ◽  
Temperature And Precipitation ◽  
Bioclimatic Variables ◽  
Phenological Cycle

Abstract Modeling the distribution of Rhanterium adpressum, an endemic species from southwestern Algeria, and the interactions of soil’s chemical properties with the variability of chemical composition of its essential oils makes the objective of this study. Obtained MaxEnt model (AUC = 0.98) showed that the general distribution of genus Rhanterium established mainly by the contribution of eight bioclimatic variables derived from temperature and precipitation (90.5%). Projection of the model in future conditions until 2070 reveals that the habitats of this species will be very affected by climate changes. The analysis of 9 soil samples shows a sandy (77–96%), alkaline, and calcareous character with an electrical conductivity between 0.2 and 1.8 dS/m at 20°C. The chemical composition of terpenoids families during a period of 5 months was dominated by monoterpene hydrocarbons (70–90%) followed by oxygen monoterpenes (4.5–9.2%), hydrocarbon sesquiterpenes (1.6–9.9%), and oxygenated sesquiterpenes (4.3–7.2%). The variation of this composition in relation with phenological cycle and physicochemical properties of the soil was discussed.

scholarly journals A comparative study of the proteoglycan of growth cartilage of normal and rachitic chicks

1978 ◽  
Vol 171 (3) ◽  
pp. 675-682 ◽  
Author(s):  
I R Dickson ◽  
P J Roughley
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Physical Properties ◽  
Proteolytic Cleavage ◽  
Average Chemical Composition ◽  
Normal Cartilage ◽  
Nasal Cartilage ◽  
Growth Cartilage

1. Proteoglycan was isolated from growth cartilage of normal and rachitic chicks. 2. The proteoglycan from normal cartilage showed differences in chemical composition and physical properties from a comparable fraction isolated from bovine nasal cartilage. 3. The proteoglycan from rachitic-chick cartilage was of smaller size than tis normal counterpart, though of similar average chemical composition. 4. Differences between proteoglycan from normal and rachitic cartilages can be explained in terms of limited proteolytic cleavage.

Comparative study of chemical composition of essential oils for two species of Asteriscus genus from Western Algeria

2019 ◽  
Vol 31 (5) ◽  
pp. 414-424
Author(s):  
Fatima Zahra Benomari ◽  
Mohammed El Amine Dib ◽  
Alain Muselli ◽  
Jean Costa ◽  
Nassim Djabou
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Essential Oils ◽  
Western Algeria

Comparative study of the chemical composition and bioactivities of essential oils of fresh and dry seeds from Myoporum insulare R. Br.

2018 ◽  
Vol 111 ◽  
pp. 232-237 ◽  
Author(s):  
Afifa Zardi-Bergaoui ◽  
Salma Jelizi ◽  
Guido Flamini ◽  
Roberta Ascrizzi ◽  
Hichem Ben Jannet
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Essential Oils

Comparative study of the physical and chemical properties of the crude oil mixture of the El-Wafa field in practically and through the use of an advanced program [Aspen HYSYS]

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Hazim Mohammed Al-Jewaree
Keyword(s):  
Comparative Study ◽  
Physical Properties ◽  
Crude Oil ◽  
Research Effort ◽  
Salt Content ◽  
Chemical Properties ◽  
Global Market ◽  
Lubricating Oil ◽  
Volume Percentage ◽  
Aspen Hysys

 The accuracy in measuring the physical properties of any crude oil has become a very difficult task because the price of crude oil in the global market depends on it in addition to the process of producing lubricating oil , chemical products and refinery. Accordingly, this research effort focuses on comparative study of Libyan crude oil (El-Wafa field)  by measuring the physical and some chemical  properties  experimentally and by Aspen HYSYS V8.4 programs. Also, test the possibility to know the volume percentage of the production of lubricants from this crude oil by the two methods mentioned above.Test carried out on these measurements practically and theoretically the physical properties are include: normal boiling point, pour point, Specific gravity (Sp. gr.), standard density (API), dynamic viscosity , kinematics viscosity , molecular weight, Acentric factor and Watson factor (K or Kw ). Some chemical properties have also been experimentally measured, for example the sulphur content ( wt.%), Asphaltenes content( wt.%)  , water and sediment content (vol.%), Conradson carbon residue ( wt.%) , salt content (as NaCl, mg\L),  ash content(wt. %) and metals content ( wt.%).The results from the tests showed that, there is a very small convergence between the results of calculations of physical properties by use this modern software with experimental measurements in the lab to the crude oil of El-Wafal field up to 99% and this blend is not suitable for production the lubricated oil at atmospheric distillation column. Also, the results observed that’s the useful mole percentage of lubricated oil cutoff has volume percentage range not significant from 1 to 1.8% for this type of Libyan crude oil. Through practical and theoretical results possible to classify this type of crude oil as Brent mix according to the global market for the sale of crude oil, which is characterized by its lack of sulfur element and metals in addition to its standard relative density API is very high more than 55.  

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