scholarly journals Particles Matters Accumulation and Anatomical Leaf Properties of Three Tree Species Growing in the Industrial Area in Jeddah, Saudi Arabia

2015 ◽  
Vol 26 (2) ◽  
pp. 23-32
Author(s):  
Al-Toukhy s Al-Toukhy s
Keyword(s):  
Saudi Arabia ◽  
Tree Species ◽  
Coal Ash ◽  
Industrial Area ◽  
Fuel Oil ◽  
Characteristic Matrix ◽  
Lawsonia Inermis ◽  
Cell Region ◽  
Leaf Properties ◽  
And Control

Particles matters accumulation and anatomical leaf properties of Camphor (Cinnamomum camphora), Henna (Lawsonia inermis), and Bougainvillea (Bougainvillea spectabilis) trees growing in the industrial zone in Jeddah - Saudi Arabia and Hada Al-Shame area (control) was done. The leaf properties of all tree species growing in the industrial and control showed that each stoma had a raised edge over the guard cell region. The guard cells appeared more shrunken on the polluted leaves as compared with unpolluted leave. The results indicated that the most deposition particles on leaf surfaces of all tree species were: soot (C) and soil dust with characteristic matrix elements (Si, Al, Mg, Ca, K); fuel oil particles rich in Al, Si, Ca, and Pb; coal ash particles containing C, Al, Si, K, Ca, S; and Pb. As a result, leaves of those plant species may be used as bio-indicators for the assessment of particular matters in the industrial areas.

scholarly journals Effect of Air Pollution on Leaf Traits of Three Tree Species Growing in the Industrial Zone of Jeddah, Saudi Arabia

2015 ◽  
Vol 26 (2) ◽  
pp. 33-38
Author(s):  
Al-Toukhy Al-Toukhy
Keyword(s):  
Air Pollution ◽  
Saudi Arabia ◽  
Leaf Area ◽  
Plant Species ◽  
Tree Species ◽  
Industrial Area ◽  
Control Area ◽  
Pore Width ◽  
Industrial Zone ◽  
Lawsonia Inermis

Effect of air pollution in the industrial area of Jeddah city, Saudi Arabia on three tree species Camphor (Cinnamomum camphora), Henna (Lawsonia inermis), and Bougainvillea (Bougainvillea spectabilis) has been studied with special reference to characteristics of leaves. These plant species were chosen because they are common and in the industrial and control areas. leaf area, number of stomata, stomata length and width and stomata pore width and length of these plant species were investigated. The results of this study with all trees species showed significant decrease in plant leaf area and stomata number in the industrial zone comparing with the control area. The results of those tree species indicated marked alteration in epidermal traits, with increased stomata length and width and stomata pore width and length collected from industrial site than those from control site. These changes in the leaf area and epidermal traits could be as indicator of environmental stress and can be recommended in the industrial areas for the early detection of air pollution.

scholarly journals The Effect of Air Pollution on some Biochemical Parameters of Leaves of Three Tree Species Growing in the Industrial Area in Jeddah, Saudi Arabia

2015 ◽  
Vol 26 (2) ◽  
pp. 19-22
Author(s):  
Shaheen Shaheen
Keyword(s):  
Saudi Arabia ◽  
Biochemical Parameters ◽  
Industrial Area ◽  
Control Area ◽  
Industrial Zone ◽  
Industrial Emissions ◽  
Lawsonia Inermis ◽  
Bougainvillea Spectabilis ◽  
Biochemical Measurements ◽  
Chlorophyll A And B

The effect of industrial emissions on the levels of certain biochemical measurements in leaves of Camphor (Cinnamomum camphora), Henna (Lawsonia inermis), and Bougainvillea (Bougainvillea spectabilis) trees growing in the industrial zone in Jeddah - Saudi Arabia and Hada Al-Shame area (control) was done. Overall results showed that the content of chlorophyll a and b, total chlorophyll, carotenoids and protein in the plant leaf of the trees growing in the industrial zone were less comparing with the leaves of the trees growing in the control area.

The polymorphism at the microRNA-155 binding site in AGTR1 gene is not significantly associated with rheumatic heart disease in Saudi Arabia population

MicroRNA ◽  
2020 ◽  
Vol 09 ◽  
Author(s):  
S. Justin Carlus ◽  
Fiona Hannah Carlus ◽  
Mazen Khalid Al-Harbi ◽  
Abdulhadi H Al-Mazroea ◽  
Khalid M Al- Harbi ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Heart Disease ◽  
Rheumatic Heart Disease ◽  
Clinical Features ◽  
Left Ventricular ◽  
Genotype Distribution ◽  
Allelic Discrimination ◽  
Children And Young Adults ◽  
And Control ◽  
Rheumatic Heart

Background: Rheumatic heart disease (RHD) remains a major cause of cardiovascular diseases and the most devastating effects are on children and young adults. RHD is caused due to the interaction between microbial, environmental, immunologic, and genetic factors. The renin-angiotensin aldosterone system (RAAS) has been strongly implicated as the susceptibility pathway in the pathogenesis of cardiovascular disease. Objective: The present study investigated the modulating effect of Angiotensin II type 1 receptor (AGTR1) 1166A>C polymorphism on the RHD and its clinical features in Saudi Arabia. Methods: AGTR1 1166A>C polymorphism was genotyped in 96 echocardiographically confirmed RHD patients and 142 ethnically matched controls by TaqMan allelic discrimination method. Results: Genotype distribution of the AGTR1 1166A>C polymorphism was not significantly different between RHD and control groups. Further, AGTR1 1166A>C genotypes are not associated with the clinical features of RHD. These data support that there was no evidence for an association between AGTR1 1166A>C polymorphism and RHD in Saudi Arabia. Conclusion: To our knowledge, this is the first study that has investigated the possible association between AGTR1 1166A>C polymorphism and susceptibility to RHD and its clinical features. Even though AGTR1 gene is 1166A>C (rs5186) was reported to be associated with hypertension, left ventricular hypertrophy and coronary heart disease. Present study did not find any association between AGTR1 1166A>C polymorphism and RHD in Saudi Arabia. Further studies are needed to confirm our findings.

scholarly journals Challenges to Infection Control Team during COVID-19 Pandemic in a Quaternary Medical Center in Saudi Arabia

2021 ◽  
pp. 1-20
Author(s):  
Hala A Amer ◽  
Ibrahim A Alowidah ◽  
Chasteffi Bugtai ◽  
Barbara M. Soule ◽  
Ziad A Memish
Keyword(s):  
Saudi Arabia ◽  
Infection Control ◽  
Prevention And Control ◽  
Infection Prevention ◽  
Task Force ◽  
Care Center ◽  
Capital City ◽  
Infection Prevention And Control ◽  
Team Approach ◽  
And Control

Abstract Background: King Saud Medical City (KSMC) is a quaternary care center based in the center of the capital city, Riyadh, Kingdom of Saudi Arabia (KSA) and is one of the key Ministry of Health (MoH) facilities dedicated to the care of COVID-19 patients in the central region. Methods: A comprehensive surge plan was promptly launched in mid-March 2020 to address the pandemic and then expanded in a phase-wise approach. Supporting the capacity of the infection prevention and control department (IPCD) was one of the main pillars of KSMC surge plan. Task force Infection Control teams have been formulated to tackle the different aspects of pandemic containment processes. The challenges and measures undertaken by the IPC team have been described. Conclusion: Realizing the more prominent role of infection prevention and control staff as frontline responders to public health emergencies like COVID-19, a solid infection prevention and control system at the healthcare setting supported by qualified and sufficient manpower, a well-developed multidisciplinary team approach, electronic infrastructure and efficient supply utilization is required for effective crisis management.

Enhancement of iron availability by some organic materials

1979 ◽  
Vol 93 (1) ◽  
pp. 115-120 ◽  
Author(s):  
A. A. Parsa ◽  
A. Wallace ◽  
J. P. Martin
Keyword(s):  
Calcareous Soil ◽  
Dry Matter ◽  
Organic Materials ◽  
Iron Availability ◽  
Lawsonia Inermis ◽  
Plant Materials ◽  
Phenolic Substances ◽  
And Control ◽  
Layer Chromatography ◽  
Positive Effect

SUMMARYIn a preliminary laboratory experiment in Iran, not reported here, 5 out of 30 plant materials incorporated into a highly calcareous soil had a positive effect on increasing the DTPA- (diethylenetriaminepentaacetic acid)-extractable Fe and all except one significantly increased the vegetative growth of sorghum. The plant materials included Lawsonia inermis L., Malva silvestris L., Zyzyphus nummularia Wak. and Lavandula carnopifolia L. A glasshouse study was repeated with two California soils pretreated with 0·5% Fe2O3 to determine if these organic materials have practical value in making Fe available to plants. A calcareous, Fe-deficient Hacienda (fine-loamy, mixed, thermic aquic natrargid) and a non-calcareous Yolo (fine-silty, mixed, non-acid, thermic typic xerothents). The previously mentioned organic materials and Laminaria saccharina L. (Lamour) were incorporated into the soils at two rates, 15000 and 20000μg/g, as air dry and in ash form. An adequate supply of major and micronutrients other than Fe was ensured. Other treatments included 5 μg Fe/g as FeSO4, Fe-138 chelate and control. All of the plant materials with the exception of L. carnopifolia significantly increased dry-matter yield and Fe, Zn, Cu and Mn uptake by sorghum in the Hacienda soil. In the Yolo soil the above were not significant. Thin-layer chromatography of the extracts of the plant materials revealed the presence of significant quantities of phenolic substances.

scholarly journals Seroprevalence of Antibodies against SARS-CoV-2 Infection among Healthcare Workers at a Tertiary Hospital in Saudi Arabia

2021 ◽  
Author(s):  
Hayat Mushcab ◽  
Jaffar Al-Tawfiq ◽  
Mohammed Ghamdi ◽  
Amani Babgi ◽  
Abdulrazack Amir ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Healthcare Workers ◽  
Infection Prevention ◽  
Seroconversion Rate ◽  
Tertiary Hospital ◽  
World Health ◽  
Infection Prevention And Control ◽  
Healthcare Organizations ◽  
And Control ◽  
Assessment Questionnaire

Abstract Background The nature of the healthcare workers' jobs standing at the frontline against the coronavirus disease 2019 (COVID-19) puts them at a higher risk of unknowingly contracting the disease and potentially contributing to the spread. This study aims to assess the overall positive seroconversion prevalence of SARS-CoV-2. Methods This is a longitudinal cohort study of healthcare workers at a tertiary hospital serving patients in several districts in the Eastern Province of Saudi Arabia. Participants were recruited between June - December 2020. Each participant had a serology blood test and completed the World Health Organization's risk factors assessment questionnaire. Results This study included 682 participants working in any capacity at a tertiary hospital, representing 15.7% of our population. Only 87 participants tested positive for SARS-CoV-2 antibodies, a prevalence of 12.7% of all participants. Of the 87 participants, 17 participants never tested positive for COVID-19 rt-PCR before the study, a prevalence of 2.9%. Moreover, the improper technique of using alcohol-based hand rub or soap and water after the risk of body fluid exposure and wearing personal protective equipment when indicated were found to be statistically significant to having positive SARS-CoV-2 IgG assay with P=0.02, P=0.03, and CI: 95% respectively. Conclusion Positive seroconversion rate was considerably low during the first wave of COVID-19 amongst our healthcare workers and similar to other healthcare organizations in Saudi Arabia. Seropositivity correlated significantly with adherence to infection prevention and control recommendations.

scholarly journals Awareness of COVID-19 Before and After Quarantine Based on Crowdsourced Data From Rabigh City, Saudi Arabia: A Cross-Sectional and Comparative Study

2021 ◽  
Vol 9 ◽  
Author(s):  
Mai Aldhahri ◽  
Rana Alghamdi
Keyword(s):  
Saudi Arabia ◽  
Online Survey ◽  
Control Measures ◽  
Infection Prevention And Control ◽  
Cross Sectional ◽  
Second Stage ◽  
Before And After ◽  
Prevention And Control Measures ◽  
Two Stages ◽  
And Control

Background: Infection prevention and control measures are critical for the prevention of the spread of COVID-19.Aim: In this study, we aimed to measure and evaluate the level of awareness and knowledge of the prevention, symptoms, and transmission control of COVID-19 before and after quarantine among the residents of Rabigh city and adjacent villages in Saudi Arabia.Methods: A cross-sectional online survey was conducted in two stages: the first stage took place before quarantine and the second stage took place after quarantine. The survey was filled out electronically.Results: A total of 448 participants responded and filled out the questionnaires. Females (73.70%) formed the largest number of participants for both stages. The majority of the participants were <30 years old (50.90%) and had a high education level in various sectors and levels (97.1%). It was noticeable that during the first stage, the participants' awareness of COVID-19 symptoms was not very high: 13.62% did not know about the symptoms. However, by the second stage, awareness about symptoms had increased (9.6%).Conclusion: The residents of Rabigh city and the surrounding villages had good levels of knowledge about COVID-19.

Evaluation of Anti-Fertility Property of Lawsonia Inermis L. (Lythraceae) Roots in Rats

2015 ◽  
Vol 19 ◽  
pp. 65-70
Author(s):  
CT Samagoro ◽  
A Agunu ◽  
H Nuhu ◽  
Z Mohammed ◽  
EM Abdurrahman ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Ethinyl Estradiol ◽  
Corpora Lutea ◽  
Lawsonia Inermis ◽  
Control Groups ◽  
Traditional Use ◽  
Standard Drug ◽  
Male Wistar Rats ◽  
Implantation Sites ◽  
And Control

Traditional contraceptive practices and use of medicinal plants is a common occurrence in Kaduna State, Nigeria. Lawsonia inermis L. (Lythraceae) roots which is the most frequently used anti-fertility agent was evaluated in rats. Apparently healthy female and male Wistar rats were used. Pre-implantation and mating ratio, determinations of implantation sites and Corpora lutea were also conducted. The effects of extract on weight of the rats were also determined. There were loss of implantation sites and decrease in body weight. The number of implantation sites showed dose–response relationship significantly (p£0.05) among the doses of extract and to standard drug (ethinyl estradiol). There was also significant (p£0.05) difference observed in the number of Corpora lutea in all experimental and control groups. Similarly, there was significant (p£0.05) difference observed in all the experimental and control groups on percentage pre-implantation loss. The plant extract exhibit anti-fertility effects. The finding may explain the traditional use of the plant as antifertility agent.Keywords: Traditional Medicine, Contraception, Methanol Extract, L. inermis Root, Medicinal Plants

Management and control of the invasive Prosopis juliflora tree species in Africa with a focus on Kenya

2022 ◽  
pp. 67-81
Author(s):  
Simon Choge ◽  
Purity Rima Mbaabu ◽  
Gabriel Mukuria Muturi
Keyword(s):  
Tree Species ◽  
Prosopis Juliflora ◽  
And Control
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