Incidence of predatory phytoseiid mites in Saudi Arabia: new records and a key to the Saudi Arabian species (Acari: Mesostigmata: Gamasina)

2012 ◽  
Vol 17 (3) ◽  
Author(s):  
MOHAMED W. NEGM ◽  
FAHAD J. ALATAWI ◽  
YOUSIF N. ALDRYHIM
Author(s):  
Rupert Brandmeier

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.


Author(s):  
Philip Altbach

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.


2021 ◽  
Vol 26 (2) ◽  
pp. 395-426
Author(s):  
Francisco Ferragut ◽  
Julia Baumann

The phytoseiid mites of the Cape Verde archipelago are scarcely known. We report the results of a survey conducted on the islands of Santiago and Santo Antão, where phytoseiids were collected from native, cultivated and invasive plants. Fourteen species were collected, four of which represent new records for the islands. One new species, Typhlodromus (Anthoseius) macrodactylus Ferragut sp. nov., is described and illustrated. We describe the unknown male of Amblyseius neolargoensis van der Merwe, provide a redescription of the male of Euseius fustis (Pritchard & Baker) and additional morphological information for all examined species.


2020 ◽  
Vol 10 (2) ◽  
pp. 108-14
Author(s):  
Majed M Moosa ◽  
Leo P. Oriet ◽  
Abdulrahman M Khamaj

Introduction: Research indicate that construction site accidents are a global concern, and rates are rapidly increasing. In developing countries such as Saudi Arabia, safety issues are frequently ignored, and little is known about their causes. Objectives: This study aimed to shed light on factors causing accidents in Saudi Arabian construction companies. Methods: An online detailed survey, using Google Form, of accident features was distributed randomly to potential employees in 35 construction companies in Saudi Arabia, where one of the top administrators or safety officers were required to respond to the survey. It was conducted from 1st June to 31st August, 2013. The safety practices and perceptions of accident causes were assessed. Results: The response rate was 63%. Over half of the surveyed organizations encountered all of the selected accident types. While 19 (86%) of the construction companies maintained the equipment regularly, 15 (68%) had regular maintenance staff and 13 (59%) inspected the equipment before use. Although 18 (82%) of the workers were supplied with personal protective equipment (PPE), only 12 (55%) emphasized its use and offered site orientation for new employees.  In the last part of the survey, respondents were requested to rate 25 factors affecting safety performance at the construction sites on a scale of 1 to 5, with 5 being the most important. The three most important factors of poor safety performance were the firm's top leaders, a lack of training, and the reckless operation of equipment. Conclusion: Changing attitudes of surrounding safety culture have the potential to significantly improve safety outcomes in the Saudi Arabian construction industry. Two Saudi Arabian corporations, Saudi Aramco and Saudi Chevron Petrochemical provide a positive model for increasing construction safety in the country, but there is a paucity of industry-level data. Further scholarly attention is strongly indicated.


2021 ◽  
Vol 15 (5) ◽  
pp. 700-704
Author(s):  
Mohammed Saeed Alkaltham ◽  
Khizar Hayat ◽  
Mohammed Asif Ahmed ◽  
Ahmad Mohammad Salamatullah ◽  
Rokayya Sami ◽  
...  

Saffron (Crocus sativus L) has been widely used for many therapeutic purposes such as a pain reliever, inflammation cure due to the highly bioactive compounds, and antioxidant activities. The effect of boiling time (5, 10, and 15 min) was investigated on the bioactive compounds of saffron samples from different origins (Spain, Saudi Arabia, and Afghanistan). Depending on the origin of the saffron sample, the extraction time showed a different effect on their total polyphenol content (TPC). The highest TPC was noted in saffron from Spain boiled for 10 min (45.01 mg GAE/g DW), followed by the sample from Saudi Arabia (44.03 mg GAE/g DW) and Afghanistan (43.54 mg GAE/g DW) boiled for 15 min, respectively. The Spanish saffron extracted for 10 min significantly (p < 0.05) exhibited the highest total flavonoid content (TFC) (12.26 mg CE/g DW), while the Saudi saffron extracted for 5 min (6.06 mg CE/g DW) showed the lowest range among all the samples. There were no significant differences among the reducing power of Saudi Arabian saffron extracted for 10 min, and Spanish saffron extracted for 5 and 15 min, respectively. The reducing power of saffron samples echoed the results of the TPC and TFC. 1,2-DHB (dihydroxy benzene), chlorogenic acid, caffeic acid are increased upon the increase of boiling time in Saudi Arabian saffron samples. In a word, 10 min and 15 min boiling times achieved the best extraction for Spanish saffron followed by Saudi and Afghani saffron samples, respectively.


2021 ◽  
Vol 18 (1A) ◽  
pp. 61-94
Author(s):  
Nashmi Alanazi

Abstract: This study explores married couples’ perception of the effects of using social media on marital relationships in Saudi Arabian society. The study discusses the growing use of social media, the common applications used, the reasons why married couples use social media, and the potential marital problems caused by the excessive use of social media. These issues are explored through the viewpoints of married couples living in Saudi Arabia. An online-based questionnaire was used to collect data, and the data sample comprised 1,226 married Saudi citizens; 55.7% male and 44.3% female. The data was analyzed using SPSS. The results show that the use of social media is common among married couples in Saudi Arabia, and that the majority use social media excessively. WhatsApp, Twitter, Instagram, and Snapchat are the most common applications used. The study also finds that married couples use social media for a number of different purposes, including communicating with family and friends, keeping up to date with celebrity and social media influencers’ news, as well as sharing photos and videos with others. Finally, spouses think that their partner’s excessive use of social media can cause marital problems, including the feelings of jealousy, the neglect of family responsibilities, the weakening of interpersonal communication, and the feelings of mistrust. Keywords: Social Media, Excessive Use of Social Media, and Marital Problems.


Zootaxa ◽  
2018 ◽  
Vol 4514 (3) ◽  
pp. 341 ◽  
Author(s):  
MAHMOUD S. ABDEL-DAYEM ◽  
IFTEKHAR RASOOL ◽  
ALI A. ELGHARBAWY ◽  
PETER NAGEL ◽  
HATHAL M. ALDHAFER

Study of ground beetles of the Garf Raydah Nature Reserve, located in the Asir Mountains of southwestern Kingdom of Saudi Arabia (KSA) resulted in one species, Paussus abditus Nagel, sp. n. described as new to science. Thirteen species (21.3%) are reported as new country records and fifteen species (24.6%) are new records for Asir Province. Adult beetles were collected from 2013 to 2017. The determination of this material yielded a total of 61 species in 40 genera and 17 tribes belonging to nine subfamilies of Carabidae. The species richness represented approximately 36.1% of carabid species previously reported from KSA. The most species rich tribes were the Lebiini (20 species), the Harpalini (10 species), and the Bembidiini (6 species). The life form analysis of adults indicated 18 life form types that are grouped into three categories, Zoophagous (77.1%), Mixophytophagous (18.0%), and Myrmecophilous (4.9%). Zoogeographical analyses indicated that the Afrotropical (19.3%) and the Saharo-Arabian (19.3%) species dominate the carabid fauna of this region of KSA. Coryza cf. maculata (Nietner, 1856) is considered the only Oriental representative. Only one cosmopolitan species, Perigona nigriceps (Dejean, 1831), was collected. Eleven endemics were identified; six species are considered KSA endemics and five are Arabian Peninsula endemics. 


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