scholarly journals Correlation between the dielectric and the mechanical behavior of cellulose nanocomposites extracted from the rachis of the date palm tree

2017 ◽  
Vol 258 ◽  
pp. 012001 ◽  
Author(s):  
A Ladhar ◽  
M Arous ◽  
H Kaddami ◽  
Z Ayadi ◽  
A Kallel
Keyword(s):  
Mechanical Behavior ◽  
Date Palm ◽  
Palm Tree ◽  
Cellulose Nanocomposites

EFFECTS OF REPLACING CEMENT BY DATE PALM TREES WASTES ON CONCRETE PERFORMANCE

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Ahmad Salah Edeen Nassef ◽  
Kalifa Hamed AlMuqbali ◽  
Sheikha Mahmood Al Naqabi
Keyword(s):  
Compressive Strength ◽  
Date Palm ◽  
Cement Content ◽  
Concrete Strength ◽  
Palm Tree ◽  
Compression Tests ◽  
Tree Leaves ◽  
Concrete Compressive Strength ◽  
Sustainable Environment ◽  
Palm Trees

This paper was studying the effects of palm tree wastes on the behavior of the concrete to reduce cement content in the concrete to ensure a sustainable environment. Both fibers of palm tree and the ash of palm tree leaves are used in this study considering different percentages of palm tree wastes, which are replaced the cement, to investigate both of workability and strength of the concrete. Also, the combination of palm tree leaves ash and fibers of palm trees is investigated. The slump and compression tests are carried out to evaluate both workability and concrete strength. The palm fibers were reducing the workability of concrete at both of different percentage of replacement and different fiber lengths. The slump is reduced by 26.667% at 2 cm fibers length and it is completely lost at 5 cm length fibers at the same percentage of replacement of 5% of the cement content. The palm fibers were weakening concrete compressive strength at different percentages and different fiber lengths. Palm leaves ash was enhancing concrete workability and concrete compressive strength.

Deep neural network based date palm tree detection in drone imagery

2022 ◽  
Vol 192 ◽  
pp. 106560
Author(s):  
Thani Jintasuttisak ◽  
Eran Edirisinghe ◽  
Ali Elbattay
Keyword(s):  
Neural Network ◽  
Deep Neural Network ◽  
Date Palm ◽  
Palm Tree ◽  
Tree Detection

Isolation and characterization of cellulose from date palm tree spathe sheath

2020 ◽  
Vol 17 ◽  
pp. 100307
Author(s):  
Chouaib Fethiza Tedjani ◽  
Omar Ben Mya ◽  
Abdelkrim Rebiai
Keyword(s):  
Date Palm ◽  
Palm Tree ◽  
Isolation And Characterization

A Matured Fruit Extract of Date Palm Tree (Phoenix dactyliferaL.) Stimulates the Cellular Immune System in Mice

2011 ◽  
Vol 59 (20) ◽  
pp. 11287-11293 ◽  
Author(s):  
Koji Karasawa ◽  
Yuji Uzuhashi ◽  
Mitsuru Hirota ◽  
Hajime Otani
Keyword(s):  
Immune System ◽  
Date Palm ◽  
Palm Tree ◽  
Fruit Extract ◽  
Cellular Immune System ◽  
Cellular Immune

scholarly journals CAN INDUSTRIALIZATION AFFECT HEAVY METALS BIOCONCENTRATION IN DATE PALM TREE FARMS IN THE SULTANATE OF OMAN?

2019 ◽  
Vol 50 (Special) ◽  
Author(s):  
Al-Shali & et al.
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Inductively Coupled Plasma ◽  
Date Palm ◽  
Heavy Metal Concentration ◽  
Industrial Area ◽  
Palm Tree ◽  
Sultanate Of Oman ◽  
Industrial Sites ◽  
Palm Fruits

Purpose Industrialization is leading to gradual accumulation of heavy metals in the date palm fruits and ecosystem. This paper aims at estimating the bioaccumulation of  heavy metals in soils, fruits (dates) near the industrial area of Al-Rusail in the Sultanate of Oman. There were three sites located for sampling and each with three farms except site 3 with one farm; industrial site, cement factory and control farm. The soil, water and date palm fruits were analyzed for heavy metals concentration using inductively coupled plasma optical emission spectrometer. The results of  analysis showed that the mean concentration of heavy metals in soil was in the following order: Ni> Zn > Pb > Cd. The concentration of heavy metals in the groundwater was found to be in this order Zn > Ni> Pb> Cd, and Zn> Pb > Ni > Cd in fruits. The statistical interaction of heavy metal mean concentrations indicated cadmium with the highest mean (0.007117mg/kg) in Farm 1 during the month of June at 0-30cm (mg/kg) in soil under Industrial sites. The fruit stages differ statistically with the highest concentration of zinc ranging from 0.190517 mg/Kg of khalal stage of farm 1 to the 0.03127 mg/kg of the control farm. groundwater heavy metal concentration was very low across the farms with the least (Cd at 0.0002434mg/Kg) in control site and not statistically different from other sites' farms.In general, the research indicated an increases in the heavy metal concentrations with closeness to industrial sites.

scholarly journals Mathematical Modelling of Lesser Date Moth Using Sex Pheromone Traps and Natural Enemies

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Moustafa El-Shahed ◽  
Asmaa M. Al-Dubiban
Keyword(s):  
Sex Pheromone ◽  
Date Palm ◽  
Equilibrium Points ◽  
Sufficient Conditions ◽  
Local Bifurcation ◽  
Palm Tree ◽  
Pheromone Traps ◽  
Sex Pheromone Traps ◽  
The Impact ◽  
Theoretical Results

In this paper, a mathematical model for lesser date moth is proposed and analyzed. The interaction between the date palm tree, lesser date moth, and natural enemy has been investigated. The impact of sex pheromone traps on lesser date moth is demonstrated. Some sufficient conditions are obtained to ensure the local and global stability of equilibrium points. The occurrence of local bifurcation near the equilibrium points is performed using Sotomayor’s theorem. Theoretical results are illustrated using numerical simulations.

scholarly journals Comparative Study of the Antioxidant Activity and Phytochemical Composition of Leaves Extract between Three Varieties of Date Palm Tree

2013 ◽  
Vol 14 ◽  
pp. 162-171
Author(s):  
Laouini Salah Eddine ◽  
Ladjel Segni ◽  
Ouahrani Mohamed Ridha
Keyword(s):  
Antioxidant Activity ◽  
Date Palm ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Point Of View ◽  
Palm Tree ◽  
Phytochemical Composition ◽  
Methanolic Extracts ◽  
The People ◽  
Antioxidant And Antimicrobial Activity

The date palm (Phoenyx dactylifera) consisted, for the people of southern Algeria, as tree of providence. Dates and their extracts are also used for many centuries as a medicine against allergy, inflammation, constipation and gastro-protective; they also have a high antibacterial and antioxidant activity. However, no studies are conducted to evaluate the extract from the leaves of date palm (Phoenyx dactylifera) in point of view of phytochemical composition, antimicrobial and the antioxidant activity. In this study, we have determined the phenolic compounds, antioxidant and antimicrobial activity of methanolic extracts from three varieties of leaves tree. According to the results the leaves extracts have very important values for polyphenols (215.24 to 156.46 mg GAE/gDW) and high antioxidant activity (324. 45 to 206.21 mg GAE/gDW), Diphenyl-1 picrylhydrazyl radical-scavenging activity (IC50 = 2.98 to 4.83 μg/ml); also the three extracts reveal a considerable antimicrobial potency and antifungal considerable activity, the diameter of inhibition is 35.2 to 39.5 mm (concentration 50 mg/ml) for Candida albicans ATCC 90026.

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