IMPROVEMENT AND CHARACTERIZATION OF SABKHA SOIL OF SAUDI ARABIA: A REVIEW

2016 ◽  
Vol 78 (6) ◽  
Author(s):  
Md Arifuzzaman ◽  
Mohammad A. Habib ◽  
Mohammed K. Al-Turki ◽  
M. I. Khan ◽  
M. M. Ali
Keyword(s):  
Saudi Arabia ◽  
Seismic Refraction ◽  
Arabian Gulf ◽  
Specific Treatment ◽  
Road Construction ◽  
Saudi Arabian ◽  
Load Carrying ◽  
Strength And Durability ◽  
Geographical Locations

Sabkha is an inferior and indigenous type of soil which forms widely in the Arabian Gulf and in many parts of Saudi Arabia, especially in the coastal areas. Several studies over the last 25 years have been conducted to develop a better understanding and characterization of Sabkha soil and to improve its strength and durability. Different studies from different perspectives, different geographical locations, and particular types were discussed with specific treatment for its improvement. The main purpose of this study is to conclude Saudi Arabian Sabkha Soil characteristics, its associated problems, and to recapitulate the current technologies and practices for the improvement of it. The relative advantages and some of the drawbacks of currently available techniques have also been discussed. Scope and future development regarding this field have also been summarized. Preloading technique was found to be effective for stabilization and consolidation of Sabkha soil over longer period of time. Another study revealed characterizing Saudi Arabian Sabkha soil using seismic refraction technique. Other comparative research was studied which focused on the improvement of Sabkha soil for road construction using geotextile and cement additives. The results suggest that both of the techniques have similar effect on the improvement of subgrade but the geotextile application is more economical as compared to others. Geotextile (grade A-400) with greater strength and thickness exhibits higher load carrying capability which leads to less deformation settlement on the subgrade.

A Characterization of the Blood Lead Concentrations in Saudi Arabian Children

1994 ◽  
Vol 31 (5) ◽  
pp. 469-472 ◽  
Author(s):  
Iman A Al-Saleh ◽  
Edward De Vol ◽  
Andrew Taylor
Keyword(s):  
Mathematical Model ◽  
Saudi Arabia ◽  
Saudi Arabian ◽  
Blood Lead ◽  
Kingdom Of Saudi Arabia ◽  
Extensive Analysis ◽  
Non Linear ◽  
Reference Hospital

The results presented in this paper are those derived from an extensive analysis of lead in 1047 children aged 2 months to 16 years attending as outpatients at a reference hospital, taking cases from all parts of the Kingdom of Saudi Arabia. Since the distribution of blood lead data in the sample suggested the existence of two mixed sub groups among the studied children, a non-linear mathematical model was used fit to the data. More than 20% of the children had blood lead concentrations above 0·608μmol/L (12·59μg/dL).

Characterization of Sabkha Jayb Uwayyid, eastern Saudi Arabia using seismic refraction profiling

2011 ◽  
Vol 6 (3) ◽  
pp. 845-855 ◽  
Author(s):  
Abdullatif A. Al-Shuhail ◽  
Abdulaziz M. Al-Shaibani
Keyword(s):  
Saudi Arabia ◽  
Seismic Refraction

Roads of Arabia: New finds of Aqaba amphorae in the Red Sea from a newly discovered wreck site at Jeddah/Eliza shoals

2020 ◽  
Author(s):  
Rupert Brandmeier
Keyword(s):  
Saudi Arabia ◽  
Red Sea ◽  
Saudi Arabian ◽  
Maritime Archaeology ◽  
Western Coast ◽  
Research Activities ◽  
Red Sea Coast ◽  
Insight Into ◽  
Sea Coast

This paper concerns a probable shipwreck cargo of Aqaba amphorae, which was discovered during the second season of the survey project along the Saudi Arabian coast, initiated by nautical archaeologists of Philipps-University Marburg and conducted in cooperation with members of the Saudi Commission for Tourism and Heritage in autumn 2013. Seafaring and sea trade was, according to the few ancient sources and modern research activities, a hazardous endeavor in antiquity. Transport containers like the Aqaba Amphorae played a major role in sea trade, a significant number of which have been detected on various sites along the Red Sea coast and its hinterland. The chronological classification as well as the application is far from complete, and recent archaeometrical investigations help to clarify the logistical aspects of manufacturing and distribution of Aqaba amphorae. Finding a number of remains of Aqaba amphorae at a supposed shipwreck site close to Jeddah delivers new insight into the maritime routes and activities along the western coast of Saudi Arabia. The documentary material currently available is the baseline for further research in the field of maritime archaeology as it pertains to trade in the Red Sea.

scholarly journals Phenotypic and molecular characterization of Acinetobacter baumannii clinical isolates in Saudi Arabia

2020 ◽  
Vol 13 (2) ◽  
pp. 327
Author(s):  
R Bawazeer ◽  
M Algoribi ◽  
T Abujamel ◽  
L Okdah ◽  
M Alzayer ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Acinetobacter Baumannii ◽  
Molecular Characterization ◽  
Clinical Isolates

scholarly journals Saudi Arabian Developments

2015 ◽  
Author(s):  
Philip Altbach
Keyword(s):  
Higher Education ◽  
Saudi Arabia ◽  
Education System ◽  
Systematic Approach ◽  
Academic Development ◽  
Saudi Arabian ◽  
Higher Education System

Saudi Arabia spends significantly on higher education, and its higher education system has expanded impressively in recent years. Now the Kingdom is seeing to upgrade its higher education system and to create a more systematic approach to academic development. Challenges remain, but the effort is proceeding.

scholarly journals Characterization of the Intergenic Spacer rDNAs of Two Pig Nodule Worms,Oesophagostomum dentatumandO. quadrispinulatum

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Rui-Qing Lin ◽  
Li Shu ◽  
Guang-Hui Zhao ◽  
Tian Cheng ◽  
Shang-Shu Zou ◽  
...  
Keyword(s):  
Mainland China ◽  
Intergenic Spacer ◽  
Oesophagostomum Dentatum ◽  
Rdna Sequences ◽  
Length Polymorphisms ◽  
Different Types ◽  
Different Origins ◽  
Geographical Locations ◽  
Independent Species

The characteristics of the intergenic spacer rDNAs (IGS rDNAs) ofOesophagostomum dentatumandO. quadrispinulatumisolated from pigs in different geographical locations in Mainland China were determined, and the phylogenetic relationships of the two species were reconstructed using the IGS rDNA sequences. The organization of the IGS rDNA sequences was similar to their organization in other eukaryotes. The 28S-18S IGS rDNA sequences of bothO. dentatumandO. quadrispinulatumwere found to have variable lengths, that is, 759–762 bp and 937–1128 bp, respectively. All of the sequences contained direct repeats and inverted repeats. The length polymorphisms were related to the different numbers and organization of repetitive elements. Different types and numbers of repeats were found between the two pig nodule species, and two IGS structures were found withinO. quadrispinulatum. Phylogenetic analysis showed that allO. dentatumisolates were clustered into one clade, butO. quadrispinulatumisolates from different origins were grouped into two distinct clusters. These results suggested independent species and the existence of genotypes or subspecies within pig nodule worms. Different types and numbers of repeats and IGS rDNA structures could serve as potential markers for differentiating these two species of pig nodule worms.

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