Ahmed Madani

Cairo University

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i-10 index

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Adel A. Surour

Suez University

Belkacem Nessark

University Ferhat Abbas of Setif

A. Selatnia

Polytechnic School of Algiers

Mohamed M. Chehimi

Université Paris Cité

Salwa F. Elbeih

National Authority for Remote Sensing and Space Sciences

Tamer Nassar

Cairo University

Burhan Niyazi

King Abdulaziz University

Mohammed Hagage

National Authority for Remote Sensing and Space Sciences

Mokhles K. Azer

National Research Centre

Hesham M. Harbi

King Abdulaziz University

Cooperative Institutions

Cairo University

Centre National de la Recherche Scientifique

University Ferhat Abbas of Setif

Université Paris Cité

Interfaces Traitements Organisation et Dynamique des Systèmes

McGill University

University of Aberdeen

Polytechnic School of Algiers

King Abdulaziz University

Délégation Paris 7

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Variability and Decay Patterns of E. coli in Drainage Water

2006 Portland, Oregon, July 9-12, 2006 (2006)

Carla L. Shaw Glenn W. Stratton Robert Gordon Ahmed Madani

The objectives of this study were to document the temporal variability and decay innumbers of Escherichia coli within drainage systems by monitoring E. coli concentrations in thedischarge from two tile drainage systems and within a surface water system throughout Nova Scotia,Canada. Both water systems have been impacted by agricultural tillage and cropping activities.Intensive hourly sampling occurred during sampling events that lasted between 24 and 96 h. A totalof 695 samples over five sampling events were collected within the surface water system and 708samples were collected over five sampling events within the tile drainage systems. Membranefiltration using the mColi-Blue medium was used for bacterial analysis. The results indicated that E.coli concentrations of surface water frequently exceeded the Canadian bacterial guidelines forrecreational waters (200 E. coli CFU 100 mL-1). Significant temporal variability was observed in allwater samples. Peak E. coli concentrations normally occurred during the onset of high flow anddecreased throughout the flow event. Decay constants for the E. coli concentrations weredetermined relative to time and accumulated flow using an exponential decay function. The surface water system showed decay constants of 0.28 and 0.35 relative to time and 0.013 relative toaccumulated flow. The subsurface drainage system showed decay constants of 0.073 and 0.10relative to time and 0.69 and 0.83 relative to accumulated flow.

Exponential decay

Tile drainage

Drainage system (geomorphology)

10.13031/2013.20774

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Integration of mineralogical, geochemical and ASD reflectance spectra data for characterization and evolution of Neoproterozoic serpentinites and listwaenites at Wadi Kalalat area, South Eastern Desert of Egypt

Geochemistry (2025)

Adel A. Surour Ahmed Madani Mohamed A. El Sobky

Wadi

Desert (philosophy)

10.1016/j.chemer.2025.126262

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Aryl diazonium salt surface chemistry and ATRP for the preparation of molecularly imprinted polymer grafts on gold substrates

Surface and Interface Analysis (2010)

Sarra Gam‐Derouich Minh Ngoc Nguyen Ahmed Madani Naima Maouche Philippe Lang

Abstract Quercetin‐imprinted poly(vinyl pyridine‐co‐ethylene glycol dimethacrylate) cross‐linked grafts were prepared by atom transfer radical polymerization (ATRP) using aryl modified gold substrates as macroinitiators. The aryl layers were first attached to Au by electrochemical reduction of the diazonium salt BF $_{4}^{-}$ , + N 2 ‐C 6 H 4 ‐CH 2 CH 2 ‐OH. The resulting Au‐C 6 H 4 ‐CH 2 CH 2 ‐OH plates (Au‐OH) were further treated with 2‐bromopropionyl bromide (Br‐C(O)C(CH 3 ) 2 ‐Br) in order to attach ATRP initiator sites to Au‐OH, thus yielding Au‐C 6 H 4 ‐CH 2 CH 2 ‐OC(O)C(CH 3 ) 2 ‐Br (Au‐Br). 4‐Vinyl pyridine (4VP, functional monomer) and ethylene glycol dimethacrylate (EGDMA, cross‐linking monomer) were co‐polymerized in acetonitrile at room temperature in the presence of quercetin as a template molecule. Quercetin was then solvent‐extracted to obtain Au‐grafted molecularly imprinted polymer (Au‐MIP). The gold‐grafted nonimprinted polymer film (Au‐NIP) was prepared as a control substrate. The changes in the surface chemical composition, from the neat Au to Au‐MIP and Au‐NIP, were monitored by XPS and polarization modulation infrared reflection‐absorption spectroscopy (PM‐IRRAS). Cyclic voltammetry (CV) was used to assess the specificity and selectivity of Au‐MIP to detect quercetin. The detection limit was found to be better than 10 −6 mol/l with CV. Using square wave stripping voltammetry (SWSV), the detection limit was found to be as low as 10 −9 mol/l. Copyright © 2010 John Wiley & Sons, Ltd.

Ethylene glycol dimethacrylate

Molecularly imprinted polymer

Atom-transfer radical-polymerization

10.1002/sia.3210

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Citations (80)

La problématique de l’imputation de la responsabilité civile pour faits de pollution dus au transport maritime d’hydrocarbures en droit international.

مجلة القانون العام الجزائري والمقارن (2021)

Ahmed Madani

Source

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Biosorption of Cd2+ from aqueous solution by a NaOH-treated bacterial dead Streptomyces rimosus biomass

Hydrometallurgy (2004)

A. Selatnia M.Z. Bakhti Ahmed Madani L. Kertous Y. Mansouri

Biosorption

Langmuir adsorption model

Saturation (graph theory)

10.1016/j.hydromet.2004.06.005

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Citations (194)

Geothermal groundwater study and its energetic potential assessment in Abu Gharadig Basin, North Western Desert, Egypt

Journal of African Earth Sciences (2023)

Ahmed Elmasry Saad A. Mohallel Ahmed Madani Hakim Saibi Mohamed Abdel Zaher

Deposition

10.1016/j.jafrearsci.2023.104925

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Citations (6)

Urban sprawl analysis of Akhmim city (Egypt) and its risk to buried heritage sites: insights from geochemistry and geospatial analysis

Heritage Science (2023)

Mohammed Hagage Ahmed Madani Ahmed Aboelyamin Salwa F. Elbeih

Abstract The present study employs a multidisciplinary approach to highlight the risks of urban expansion on buried cultural heritage sites. The buried temple of Ramses II in Akhmim city was chosen as a case study to assess the impact of urban expansion on its preservation. Support Vector Machine (SVM) classification was utilized to analyze satellite images from multiple sensors and evaluate the extent of urban growth surrounding the temple. The study also incorporated petrographic and mineralogical analyses of statues discovered in the temple, along with calculations of saturation indices, to assess the potential interactions between groundwater and archaeological materials. The findings indicate that urban development is encroaching upon the temple, posing potential risks to its preservation. Saturation indices for minerals in groundwater indicate a high tendency to dissolve dolomite (a common mineral in limestone) and to precipitate halite (sodium chloride). This is a concern because the artifacts unearthed from the temple are primarily composed of limestone. Consequently, there is a risk to the artifacts due to erosion and disintegration caused by mineral crystallization and expansion, as evidenced by the analysis of the rock and mineral characteristics of the statues discovered in the temple. The study proposes protective measures for the temple, including defining its dimensions beneath the urban area and establishing a dedicated protection zone around it.

Temple

Urban sprawl

Halite

10.1186/s40494-023-01008-0

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Citations (7)

Screening for Frequency of Occurrence of Mutations of Exon 28 of ABCC8 Gene in Egyptian Patients with Congenital Hyperinsulinism

The Egyptian Journal of Hospital Medicine (2023)

Shereen Abdelghaffar Hanan Ali Ahmed Madani Mohammed Ahmed Mohammed Ashour

Background: Congenital hyperinsulinism (CHI) is a severe inherited form of hyperinsulinemic hypoglycemia (HH).It can occur as a result of several gene mutations.The most prevalent are mutations of the ABCC8 gene, which codes for the sulphonylurea receptor 1 subunit (SUR-1) of the potassium-sensitive ATP channels located on the pancreatic B-cells.Aim of the study: to identify mutations of exon 28 of the ABCC8 gene in patients with CHI.Patients and Methods: Thirteen patients diagnosed with CHI, aged from 1 day to 18 years, following up in the Diabetes, Endocrine and Metabolism Pediatric Unit, Abo ElReesh Children's Hospital, Cairo University were recruited.Clinical and biochemical data were collected through history taking, physical examination, and revising patients' medical records.Genetic analysis of exon 28 of the ABCC8 gene was done using DNA sequencing.Results: The results of the DNA sequencing of exon 28 of the ABCC8 gene and its intronic boundaries detected no abnormalities in the study group except for one case which revealed an intronic homozygous variant on intron 28 (rs1954399854) of uncertain significance.Conclusion: Mutations of the ABCC8 gene account for around 40-50% of CHI cases.To our knowledge, there are no sufficient studies in the Egyptian population to detect mutations of the ABCC8 gene, which necessitated conducting this study.Exon 28 of the ABCC8 gene was the only exon tested due to limited resources and self-funding.This did not reveal significant mutations.Further research is warranted to detect other ABCC8 gene mutations in the Egyptian population.

Congenital hyperinsulinism

10.21608/ejhm.2023.326649

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The Effects of Structural Elements on Groundwater of Wadi Yalamlam, Saudi Arabia Using Integration of Remote Sensing and Airborne Magnetic Survey

Earth Systems and Environment (2019)

Ahmed Madani Burhan Niyazi Abdelhamid El-Fakharani Helmy Osman

Wadi

Lineament

10.1007/s41748-019-00091-3

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Citations (7)