Laboratory study of geotextiles performance on reinforced sandy soil

2016 ◽  
Vol 27 (6) ◽  
pp. 1060-1070 ◽  
Author(s):  
Brahim Abdelkader ◽  
Arab Ahmed ◽  
Belkhatir Mostéfa ◽  
Shahrour Isam
Keyword(s):  
Sandy Soil ◽  
Laboratory Study

Laboratory Study on Shear Strength Behaviour of Reinforced Sandy Soil: Effect of Glass-Fibre Content and Other Parameters

2015 ◽  
Vol 41 (4) ◽  
pp. 1343-1353 ◽  
Author(s):  
Ismail Benessalah ◽  
Ahmed Arab ◽  
Pascal Villard ◽  
Marwan Sadek ◽  
Abdelkader Kadri
Keyword(s):  
Shear Strength ◽  
Sandy Soil ◽  
Laboratory Study ◽  
Glass Fibre ◽  
Fibre Content

A laboratory study of shear strength of partially saturated sandy soil

2021 ◽  
pp. 1-10
Author(s):  
Krim Abdallah ◽  
Brahimi Abdelkader ◽  
Arab Ahmed ◽  
Bouri Djamel Eddine ◽  
Sadek Marwan
Keyword(s):  
Shear Strength ◽  
Sandy Soil ◽  
Laboratory Study ◽  
Partially Saturated

A laboratory study on the lateral resistance of single piles with different cross-section shapes in a sandy soil

2021 ◽  
Vol 14 (23) ◽  
Author(s):  
Meysam Memar ◽  
Amir Hossein Vakili ◽  
Seyed Mohamad Ali Zomorodian ◽  
Mohammad Sadegh Farhadi
Keyword(s):  
Cross Section ◽  
Sandy Soil ◽  
Laboratory Study ◽  
Lateral Resistance ◽  
Single Piles

scholarly journals Changes of Some Phisiological Processes and Yield of Winter Wheat and Triticale Under the Influence of Sprinkling Irrigation and Nitrogen Fettilizastion. Part 1. Chlorophyll and Carotenoid Content in Some Organs of Winter Wheat and Triticale

2013 ◽  
Vol 46 (1) ◽  
pp. 15-30 ◽  
Author(s):  
Stanisław Kaczmarczyk ◽  
Zdzisław Koszański ◽  
Cezary Podsiadło
Keyword(s):  
Winter Wheat ◽  
Sandy Soil ◽  
Laboratory Study ◽  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Photosynthetic Activity ◽  
Flag Leaf ◽  
Carotenoid Content ◽  
High Nitrogen

The aim of the field and laboratory study was to determine effects of nitrogen fertilization and sprinkling irrigation on chlorophyll and carotenoid content in the flag leaf, shank and spike of winter wheat and triticale cultivated on a sandy soil. Obtained results show that the applied treatments (nitrogen and sprinkling irrigation) significantly increased the yield of dry matter of the tested organs, and their chlorophyll and carotenoid content. Compared to winter wheat a higher concentration of the pigments was found in triticale. Sprinkling irrigation in high nitrogen fertilization inhibited the process of pigment decomposition of and hence the time of photosynthetic activity of the tested plants was extend.

Laboratory and in-situ analysis of comet dust

1988 ◽  
Vol 46 ◽  
pp. 8-9
Author(s):  
D.E. Brownlee ◽  
A.L. Albee
Keyword(s):  
Electron Microscopy ◽  
Solar System ◽  
Laboratory Study ◽  
Isotopic Analysis ◽  
Building Blocks ◽  
Sem Analysis ◽  
Early Solar System ◽  
Cometary Material ◽  
Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

When Apologies for Injustice Matter

2008 ◽  
Vol 13 (4) ◽  
pp. 239-247 ◽  
Author(s):  
David De Cremer ◽  
Barbara C. Schouten
Keyword(s):  
Laboratory Study ◽  
Interaction Effect ◽  
Interactive Effect ◽  
Cross Sectional ◽  
Fairness Perceptions ◽  
Organizational Survey ◽  
Experimental Laboratory

The present research examined the idea that the effectiveness of apologies on promoting fairness perceptions depends on how meaningful and sincere the apology is experienced. More precisely, it was predicted that apologies are more effective when they are communicated by an authority being respectful to others. A study using a cross-sectional organizational survey showed that an apology (relative to giving no apology) revealed higher fairness perceptions, but only so when the authority was respectful rather than disrespectful. In a subsequent experimental laboratory study the same interaction effect (as in Study 1) on fairness perceptions was found. In addition, a similar interaction effect also emerged on participants’ self-evaluations in terms of relational appreciation (i.e., feeling valued and likeable). Finally, these self-evaluations accounted (at least partly) for the interactive effect on fairness perceptions.

Sign in / Sign up

Export Citation Format

Share Document