Mohamed M. Nasr

Riyadh Elm University

Shilajit is used commonly as Ayurvedic medicine worldwide which is Rasayana herbo-mineral substance and consumed to restore the energetic balance and to prevent diseases like cognitive disorders and Alzheimer. Locally, Shilajit is applied for patients diagnosed with bone fractures. For safety of the patients, the elemental analysis of Shilajit is i...

Tinnevelly senna leaves are being applied to cure many diseases especially in developing countries and sub-Saharan region due to many bioactive compounds such as sennosides, phenols, and flavonoids. The conventional methods to isolate and analyze plant extracts biomolecules are not very effective as well cost effective as they require hazardous che...

Rhatany roots (RRs) have been used in indigenous systems of medicines to treat many common illnesses due to the presence of highly active astringent and antiviral biochemical constituents that possess strong therapeutic and pharmacological properties. Due to its widespread use, the accurate knowledge on the elemental composition of this medicinal p...

The antioxidant Moringa oleifera (a medicinal plant) leaves (MOLs) containing diverse nutrients are highly beneficial for the human health. The MOLs upon consumption can lower the blood sugar, cure the heart diseases, and reduce the inflammation. In this perception, the “primary nutrients contents” in the dry MOLs (pellet samples) were evaluated fo...

Certain types of cancer deaths are widespread due to the diagnostic complexities at the early stages. Recent studies revealed that the bio-accumulated heavy metals (act as pro-carcinogens) in the human colon cause strong interactions with the nuclear proteins, leading to the DNA damages and repair processes inhibition, resulting in the cancers. Mos...

Introduction: Clinical dentistry and primary oral care continue to experience significant improvements in quality at different levels of dentistry. These changes and improvements are of great benefit to both patients and clinicians because of significant achievements and advances in the physical, chemical, and biological sciences. Nanotechnology an...

Gum Arabic (GA) is widely used as an emulsifier and in different pharmaceutical products as claimed that it acts as an anti-oxidant and resists renal, hepatic and cardiac toxicities. GA has been used in agroalimentary industry besides being a natural origin polysaccharide. Due to its great significance and multiple medicinal applications, its eleme...

Gum Arabic is a polysaccharide flora origin used as emulsifier in different food industries. In this work, we analyzed three different types of Gum Arabic (GA) called Acacia Senegal, Acacia Seyal and Acacia Nilotica which are grown in different regions of Sudan using Laser Induced Breakdown Spectroscopy (LIBS) technique. Utilizing a self-develop LI...

Gall bladder cancer [GBC] is a highly fatal malignancy. Geographically, regions of high prevalence of gallstones [GSs] have shown to have higher rates of GBC, which is now a recognized risk factor for GBC. Heavy metal toxicity has also been reported to be associated with GBC. An effort therefore at recognizing and avoiding potential risk factors fo...

Laser induced breakdown spectrometer (LIBS) was built and optimized to detect the level of toxic elements such as lead, cadmium and arsenic present in the roots of extracted teeth of smokers and nonsmokers. Sixty extracted teeth from patients having history of chronic periodontitis were divided into two groups of 30 teeth each for smoker and nonsmo...

The harmful health effects of nicotine, carbon monoxide and other noxious gases due to tobacco smoke are well known. However there is no systematic study reported regarding the detection of heavy and trace metals such as cadmium, lead, arsenic present in the periodontium due to heavy tobacco smoking. Hence there is high demand to develop a reliable...

Highly toxic contaminants like Cr, As, and Pb were detected in chrome-tanning process of animal skin to produce leather by applying locally developed laser-induced breakdown spectrometer. An Nd-YAG laser with 1,064 nm wavelength was focused on the surface of leather samples (natural and manufactured) to generate a plasma spark and spectrally resolv...

A laser-induced breakdown spectroscopy (LIBS) setup was developed to detect lead and other toxic contaminants such as chromium in paint emulsion samples manufactured in Saudi Arabia. The lead concentration detected in these samples was in the 327.2-755.3 ppm range, which is much higher than the safe permissible limit set by Saudi regulatory agencie...

The significance of trace elements in the petroleum industry has increased because of the role of nonhydrocarbon components in the elucidation of the mechanisms of migration and origin of crudes. Determining the amounts of trace elements is also very important in the petroleum industry for refining and processing of crudes and even exploration. In...

The significance of trace elements in the petroleum industry has increased because of the role of non-hydrocarbon components in the elucidation of the mechanisms of migration and origin of crudes. Determining the amounts of trace elements is also very important in the petroleum industry for refining and processing of crudes and even exploration. In...

Laser Induced Breakdown Spectroscopy (LIBS) technique was applied to determine the concentrations of different toxic elements like lead, chromium, cadmium and zinc in four different lipstick brands sold at local markets in Saudi Arabia. These samples contain toxic elements like lead, cadmium and chromium which are carcinogen dermatitis, allergic an...

Laser induced breakdown spectroscopy (LIBS) was applied for the detection of trace elements in non-degradable part of plastics known as insoluble organic material, obtained from thermal and catalytic degradation of plastics. LIBS signal intensity for each metal measured in the test sample was unique and different. The capability of this technique i...

Trace elements of environmental significance present in the volcanic rock samples collected from sites of the Cenozoic era flood basalt flows and eruptions were detected using locally developed laser-induced breakdown spectrometer. For spectro-chemical analysis of these samples, the plasma was generated by focusing a pulsed Nd: YAG laser radiation...

Ce travail avait pour objectifs d’évaluer la qualité de vie des patients présentant un trouble dépressif caractérisé et d’identifier les facteurs de risque quant à l’origine de cette altération. Cette étude transversale réalisée à la consultation de psychiatrie du CHU de Mahdia durant une période de quatre mois a concerné 360 patients déprimés. Les...

Depressive disorders affect many psychosocial and functional aspects, leading to a real social handicap and an alteration in quality of life. Our purposes were to evaluate the depressive patient's quality of life and to identify the risk factors responsible for this deterioration. Our cross sectional study lasted for four months, from 1st March to...

The haemodialysis has considerably transformed the evolution of chronic renal failure which usually has a precarious evolution. However, this palliative treatment disturbed in several manners the universe of the patient. Our purposes were to evaluate the quality of life of patient on haemodialysis and to identify the risk factors that can deteriora...

The haemodialysis has considerably transformed the evolution of chronic renal failure which usually has a precarious evolution. However, this palliative treatment disturbed in several manners the universe of the patient. Our purposes were to evaluate the quality of life of patient on haemodialysis and to identify the risk factors that can deteriora...

Women, as well as the rest of any population, have their own interests and follow the news not only inside but also outside the country and they have their impact on the social and economic policies of the nation and the rest of the world. In this study it is assumed that the more we know about Pakistani women and their lifestyle the better we can...

Women, as well as the rest of any population, have their own interests and follow the news not only inside but also outside the country and they have their impact on the social and economic policies of the nation and the rest of the world. In this study it is assumed that the more we know about Pakistani women and their lifestyle the better we can...