Publications

Export 2628 results:
Sort by: Author [ Title  (Desc)] Type Year
A B C D E F G H I J K L M N O [P] Q R S T U V W X Y Z   [Show ALL]
Youssef, L., and E. Paul and Janet Starkey, "“The Image of Nineteenth Century Cairo as a Medieval City in Kinglake’s Eothen”", Interpreting the Orient: Travellers in Egypt and the Near East, Lebanon, Ithaca Press, 2001.
Awadein, A., M. Pesheva, and D. L. Guyton, "“Inverted Brown pattern”: A tight inferior oblique muscle masquerading as a superior oblique muscle underaction—clinical characteristics and surgical management", Journal of American Association for Pediatric Ophthalmology and Strabismus, vol. 10, no. 6: Mosby, pp. 565–572, 2006. Abstract
n/a
Nemr, R. A., M. Khalil, M. S. Sarhan, M. Abbas, H. ElSawey, H. H. Youssef, M. A. Hamza, A. T. Morsi, M. El-Tahan, M. Fayez, et al., "“In situ similis” Culturing of Plant Microbiota: A Novel Simulated Environmental Method Based on Plant Leaf Blades as Nutritional Pads", Frontiers in Microbiology, vol. 11, pp. 454, 2020. AbstractWebsite

High-throughput cultivation methods have recently been developed to accelerate the recovery of microorganisms reluctant to cultivation. They simulate in situ environmental conditions for the isolation of environmental microbiota through the exchange of growth substrates during cultivation. Here, we introduce leaf-based culture media adopting the concept of the plant being the master architect of the composition of its microbial community. Pre-physical treatments of sunflower plant leaves, namely punching, freezing, and/or autoclavation, allowed the diffusion of electrolytes and other nutrients to configure the leaf surface as a natural pad, i.e., creating an “in situ similis” environment suitable for the growth of rarely isolated microbiota. We used surface inoculation and membrane-filtration methods to assess the culturability of endophytic bacteria from the sunflower phyllosphere and rhizosphere. Both methods supported excellent colony-forming unit (CFU) development when compared to standard R2A medium, with a special affinity to support better growth of epiphytic and endophytic populations of the phyllosphere compared with the rhizosphere. A 16S rRNA gene analysis of >122 representative isolates indicated the cultivation of a diverse set of microorganisms by application of the new methods. It indicated the predominance of 13 genera of >30 potential species, belonging to Firmicutes, Proteobacteria, and Actinobacteria, and especially genera not commonly reported for sunflower, e.g., Rhizobium, Aureimonas, Sphingomonas, Paracoccus, Stenotrophomonas, Pantoea, Kosakonia, and Erwinia. The strategy successfully extended diversity and richness in the endophyllosphere compared to the endorhizosphere, while CFUs grown on the standard R2A medium mainly pertain to Firmicutes, especially Bacillus spp. MALDI-TOF MS analysis clustered the isolates according to their niche and potential functions, where the majority of isolates of the endorhizosphere were clustered away from those of the endophyllosphere. Isolates identified as Gammaproteobacteria and Alphaproteobacteria were distinguishably sub-clustered, which was in contrast to the heterogeneous isolates of Firmicutes (Bacillus spp.). In conclusion, leaf in situ similis cultivation is an effective strategy to support the future application of culturomics of plant microbiota. This is an effort to access novel isolates that are more adapted and competitive in their natural environments, especially those subjected to abiotic stresses like those prevailing in arid/semi-arid zones, and, consequently, to support the application of agro-biotechnologies, among other technologies, to improving agriculture in such zones.

Nemr, R. A., M. Khalil, M. S. Sarhan, M. Abbas, H. Elsawey, H. H. Youssef, M. A. Hamza, A. T. Morsi, M. EL-Tahan, M. Fayez, et al., "“In situ similis” Culturing of Plant Microbiota: A Novel Simulated Environmental Method Based on Plant Leaf Blades as Nutritional Pads", Frontiers in Microbiology, vol. 11, 2020. AbstractWebsite

High-throughput cultivation methods have recently been developed to accelerate the recovery of microorganisms reluctant to cultivation. They simulate in situ environmental conditions for the isolation of environmental microbiota through the exchange of growth substrates during cultivation. Here, we introduce leaf-based culture media adopting the concept of the plant being the master architect of the composition of its microbial community. Pre-physical treatments of sunflower plant leaves, namely punching, freezing, and/or autoclavation, allowed the diffusion of electrolytes and other nutrients to configure the leaf surface as a natural pad, i.e., creating an “in situ similis” environment suitable for the growth of rarely isolated microbiota. We used surface inoculation and membrane-filtration methods to assess the culturability of endophytic bacteria from the sunflower phyllosphere and rhizosphere. Both methods supported excellent colony-forming unit (CFU) development when compared to standard R2A medium, with a special affinity to support better growth of epiphytic and endophytic populations of the phyllosphere compared with the rhizosphere. A 16S rRNA gene analysis of >122 representative isolates indicated the cultivation of a diverse set of microorganisms by application of the new methods. It indicated the predominance of 13 genera of >30 potential species, belonging to Firmicutes, Proteobacteria, and Actinobacteria, and especially genera not commonly reported for sunflower, e.g., Rhizobium, Aureimonas, Sphingomonas, Paracoccus, Stenotrophomonas, Pantoea, Kosakonia, and Erwinia. The strategy successfully extended diversity and richness in the endophyllosphere compared to the endorhizosphere, while CFUs grown on the standard R2A medium mainly pertain to Firmicutes, especially Bacillus spp. MALDI-TOF MS analysis clustered the isolates according to their niche and potential functions, where the majority of isolates of the endorhizosphere were clustered away from those of the endophyllosphere. Isolates identified as Gammaproteobacteria and Alphaproteobacteria were distinguishably sub-clustered, which was in contrast to the heterogeneous isolates of Firmicutes (Bacillus spp.). In conclusion, leaf in situ similis cultivation is an effective strategy to support the future application of culturomics of plant microbiota. This is an effort to access novel isolates that are more adapted and competitive in their natural environments, especially those subjected to abiotic stresses like those prevailing in arid/semi-arid zones, and, consequently, to support the application of agro-biotechnologies, among other technologies, to improving agriculture in such zones. © Copyright © 2020 Nemr, Khalil, Sarhan, Abbas, Elsawey, Youssef, Hamza, Morsi, El-Tahan, Fayez, Patz, Witzel, Ruppel, El-Sahhar and Hegazi.

Ε
Kyriakopoulou, K., E. Riti, Z. Piperigkou, K. Koutroumanou Sarri, H. Bassiony, M. Franchi, and N. K. Karamanos, "ΕGFR/ERβ-Mediated Cell Morphology and Invasion Capacity Are Associated with Matrix Culture Substrates in Breast Cancer.", Cells, vol. 9, issue 10, 2020. Abstract

Breast cancer accounts for almost one in four cancer diagnoses in women. Studies in breast cancer patients have identified several molecular markers, indicators of aggressiveness, which help toward more individual therapeutic approaches. In triple-negative breast cancer (TNBC), epidermal growth factor receptor (EGFR) overexpression is associated with increased metastatic potential and worst survival rates. Specifically, abnormal EGFR activation leads to altered matrix metalloproteinases' (MMPs) expression and, hence, extracellular matrix (ECM) degradation, resulting in induced migration and invasion. The use of matrix substrates for cell culture gives the opportunity to mimic the natural growth conditions of the cells and their microenvironment, as well as cell-cell and cell-matrix interactions. The aim of this study was to evaluate the impact of EGFR inhibition, estrogen receptor beta (ERβ) and different matrix substrates [type I collagen and fibronectin (FN)] on the functional properties, expression of MMPs and cell morphology of ERβ-positive TNBC cells and shERβ ones. Our results highlight EGFR as a crucial regulator of the expression and activity levels of MMPs, while ERβ emerges as a mediator of MMP7 and MT1-MMP expression. In addition, the EGFR/ERβ axis impacts the adhesion and invasion potential of breast cancer cells on collagen type I. Images obtained by scanning electron microscope (SEM) from cultures on the different matrix substrates revealed novel observations regarding various structures of breast cancer cells (filopodia, extravesicles, tunneling nanotubes, etc.). Moreover, the significant contribution of EGFR and ERβ in the morphological characteristics of these cells is also demonstrated, hence highlighting the possibility of dual pharmacological targeting.

γ
Abdel Razik, E. S., B. M. Alharbi, T. B. Pirzadah, G. S. H. Alnusairi, M. H. Soliman, and K. R. Hakeem, "γ‐Aminobutyric acid (GABA) mitigates drought and heat stress in sunflower (Helianthus annuus L.) by regulating its physiological, biochemical and molecular pathways", Physiologia Plantarum, 2021. Abstract
n/a
{
Galal, G. H., J. T. McDonnell, and R. J. Paul, The {Utility} of {Qualitative} {Modelling} in {Architectural} {Evaluation}, : Association for Information Systems, pp. 1392–1395, 2001. Abstract
n/a
Galal, G., J. McDonnell, and R. Paul, "The {Utility} of {Qualitative} {Modeling} in {Architectural} {Evaluation}", AMCIS 2001 Proceedings, pp. 270, 2001. Abstract
n/a
Galal, G., J. McDonnell, and R. Paul, "The {Utility} of {Qualitative} {Modeling} in {Architectural} {Evaluation}", AMCIS 2001 Proceedings, pp. 270, 2001. Abstract
n/a
Sattar, A. M. A., K. Plesiński, A. Radecki-Pawlik, and B. Gharabaghi, "{Scour depth model for grade-control structures}", Journal of Hydroinformatics, vol. 20, no. 1, pp. 117-133, 09, 2018. AbstractWebsite

{Grade-control structures (GCS) are commonly used to protect fish habitat by preventing excessive river-bed degradation in mountain streams. However, flow over the GCS can cause localized scour immediately downstream of the weir. This paper aims to develop more accurate models for prediction of the maximum scour depth downstream of GCS, using a more extensive dataset and evolutionary gene expression programming (GEP). Three GEP models are developed relating maximum scour depth and various control variables. The developed models had the lowest error compared to available models. A parametric analysis is performed for further verification of the developed GEP model. The results indicate that the proposed relations are simple and can more accurately predict the scour depth downstream GCS.}

Galal, G. H., J. T. McDonnell, and R. J. Paul, "The {Role} of {Interpretive} {Evaluation} in {Engineering} {Information} {Systems} {Requirements}", AMCIS 2000 Proceedings, pp. 420, 2000. Abstract
n/a
Khamis, G., A. M. Saleh, T. H. Habeeb, W. N. Hozzein, M. A. M. Wadaan, J. Papenbrock, and H. AbdElgawad, "{Provenance effect on bioactive phytochemicals and nutritional and health benefits of the desert date Balanites aegyptiaca}", Journal of Food Biochemistry, no. December 2019, pp. 1–13, 2020. Abstract

Balanites aegyptiaca L. is a multipurpose tree distributed in Africa and Middle East. Several parts of B. aegyptiaca have been suggested to have medicinal uses. So far the effect of ecological origin on the nutritional values and biological activities of B. aegyptiaca genotypes is rarely investigated. Further, metabolic profiling and assessment of the functional food value of B. aegyptiaca leaves are far from complete. In this study, biological activities and profiling of primary and secondary metabolites were investigated in the leaves of five B. aegyptiaca provenances collected from Egypt, Sudan, Saudi Arabia, and Yemen. Interestingly, all provenances showed notable antidiabetic, antioxidant, antiprotozoal, antibacterial, antifungal, and anticancer activities. Hierarchical clustering analysis revealed significant variability in the concentrations of individual sugars, organic acids, amino acids, fatty acids, vitamins, phenolics, and minerals among the provenances and these variations were provenance dependent. Medina provenance showed the heights diphenylpicrylhydrazyl (DPPH) scavenging and antifungal activities and was the most powerful against embryonic kidney adenocarcinoma and urinary bladder carcinoma cells. The highest inhibition against Escherichia coli and colon carcinoma cells was observed by Sudan and Cairo provenances. El-Kharga and Yemen provenances showed the greatest activity against Trypanosoma cruzi and hepatocellular and urinary bladder carcinoma. Therefore, leaves of B. aegyptiaca possess good nutritive and biological capacities and might have potential applications in the food and medical industries. However, the strength of such activities is significantly affected by the provenance. Practical applications: According to the national Research Council (NRC) of United States, Balanites aegyptiaca L. is recognized among the 24 priority lost crops of Africa. B. aegyptiaca leaves contain considerable amounts of primary metabolites (e.g., sugars, EAAs, USFAs) and secondary (e.g., phenolic acids and flavonoids) metabolites, vitamins, and macro and microelements. The obvious existence of these nutritionally and medicinally related compounds supports the functional food value of B. aegyptiaca leaves. Moreover, the present results revealed that B. aegyptiaca is not only a foliage dietary plant, but also could be considered as a valuable source for neutraceuticals, which support its pharmacological value. So far, this is the first report to explore, in detail, the functional food value of B. aegyptiaca leaves by presenting a clear image about its metabolic profiling and biological activities, and how the provenance factor could affect these values.

Clegg, S. R., and G. Palmer, The {Polititics} of {Management} {Knowledge}, , London, Sage, 1996. Abstract
n/a
Popper, K., The {Logic} of {Scientific} {Discovery}, , London, Hutchinson, 1968. Abstract
n/a
Vinuganesh, A., A. Kumar, S. Prakash, M. O. Alotaibi, A. M. Saleh, A. E. Mohammed, G. T. S. Beemster, and H. AbdElgawad, "{Influence of seawater acidification on biochemical composition and oxidative status of green algae Ulva compressa}", Science of the Total Environment, vol. 806: Elsevier B.V., pp. 150445, 2022. AbstractWebsite

The sequestration of elevated atmospheric CO2 levels in seawater results in increasing acidification of oceans and it is unclear what the consequences of this will be on seaweed ecophysiology and ecological services they provide in the coastal ecosystem. In the present study, we examined the physiological and biochemical response of intertidal green seaweed Ulva compressa to elevated pCO2 induced acidification. The green seaweed was exposed to control (pH 8.1) and acidified (pH 7.7) conditions for 2 weeks following which net primary productivity, pigment content, oxidative status and antioxidant enzymes, primary and secondary metabolites, and mineral content were assessed. We observed an increase in primary productivity of the acidified samples, which was associated with increased levels of photosynthetic pigments. Consequently, primary metabolites levels were increased in the thalli grown under lowered pH conditions. There was also richness in various minerals and polyunsaturated fatty acids, indicating that the low pH elevated the nutritional quality of U. compressa. We found that low pH reduced malondialdehyde (MDA) content, suggesting reduced oxidative stress. Consistently we found reduced total antioxidant capacity and a general reduction in the majority of enzymatic and non-enzymatic antioxidants in the thalli grown under acidified conditions. Our results indicate that U. compressa will benefit from seawater acidification by improving productivity. Biochemical changes will affect its nutritional qualities, which may impact the food chain/food web under future acidified ocean conditions.

LeCompte, M. D., W. L. Millroy, and J. Preissle, The {Handbook} of {Qualitative} {Research} in {Education}, , London, Academic Press, 1992. Abstract
n/a
[
Schmidbauer, J. M., L. Werner, D. J. Apple, S. K. Pandey, A. M. Izak, R. H. Trivedi, T. A. Macky, G. U. Auffarth, Q. Peng, S. N. Arthur, et al., "[Postoperative opacification of posterior chamber intraocular lenses - a review].", Klinische Monatsblatter fur Augenheilkunde, vol. 218, issue 9, pp. 586-94, 2001 Sep. Abstract

Postoperative opacification of intraocular lenses (IOLs) is a very unpleasant complication for the ophthalmic surgeon and the patient. We report on our experiences with opacification of different foldable IOL designs and rigid poly (methyl methacrylate) (PMMA) posterior chamber lenses.1. Snowflake degeneration of PMMA IOLs: This condition is an unanticipated and surprising late postoperative finding 8 to 15 years after implantation. In our opinion, this complication is probably not related to the PMMA biomaterial itself, but rather it appears to represent a manufacturing problem that has affected a selected, albeit large number of lenses manufactured in the 1980s-mid 1990s.2. Degeneration of UV absorber material and calcium deposits within the optic of hydrophilic IOLs: Two years postoperatively degenerations of UV absorber material and calcium deposits within the optic of single piece hydrophilic acrylic lenses SC60B-OUV manufactured by MDR (Medical developmental research Inc. Clearwater FL, USA) can occur. Although the precise mechanism is not fully known, it was assumed that these opacifications are due to premature aging of the UV blocking agent incorporated in the lens biomaterial and calcification.3. Calcification on the surface of the Bausch & Lomb Hydroviewtrade mark IOLs: Twelve to 15 months postoperatively granular surface calcifications in Hydroviewtrade mark IOLs occured. The mechanism is not fully understood. According to Bausch and Lomb studies, part of the components of the packaging contained silicone, which may have come off the packaging onto the lens optic, where it then appears to be a catalyst for calcium precipitation. The manufacturer has correlated a change in packaging with the appearance of the opacification. The manufacturer now believes that this problem has been solved. However, final verification will require a careful 1 - 2 years clinical study.4. Glistenings in the hydrophobic acrylic AcrySoftrade mark IOLs: The time frame of glistenings in the AcrySoftrade mark IOLs is highly variable. It has been suggested that the occurrence of glistenings may be related to variations in the temperature of the lens just prior to and or during insertion into the eye. Formation of vacuoles may occur within the submersed acrylic polymer when there is a transient increase and then decrease in temperature during the surgical procedure. "Glistenings" may then subsequently form by ingress of anterior chamber fluid. Contrast sensitivity can been decreased in some patients, but clinically significant decrease of visual acuity has been rare.

Z
B.Osman, R., A. G. T. Payne, Sunyoung Ma, and W. Duncan, "Zirconia implants supporting overdentures: A pilot study with novel prosthodontic designs. Int J Prosthodont; 2013; 26: 277-281.", The International Journal of Prosthodontics, vol. 26, pp. 277-281, 2013.
Y
Alaasar, M., S. Poppe, Y. Cao, C. Chen, F. Liu, C. Zhu, and C. Tschierske, "Y-shaped tricatenar azobenzenes–functional liquid crystals with synclinic–anticlinic transitions and spontaneous helix formation", Journal of Materials Chemistry C, vol. 8, issue 37, pp. 12902-12916, 2020.
X
Elella, M. A. H., E. S. Goda, M. A. Gab-Allah, S. E. Hong, B. Pandit, S. Lee, H. Gamal, A. ur Rehman, and K. R. Yoon, "Xanthan gum-derived materials for applications in environment and eco-friendly materials: A review", Journal of Environmental Chemical Engineering, vol. 9, pp. 104702, 2021.
Pardini, L., A. Elhassan, M. Ferretti, A. Foresta, S. Legnaioli, G. Lorenzetti, E. Nebbia, F. Catalli, M. A. Harith, D. Diaz Pace, et al., "X-Ray Fluorescence and Laser-Induced Breakdown Spectroscopy analysis of Roman silver denarii", Spectrochimica Acta Part B: Atomic Spectroscopy, vol. 74: Elsevier, pp. 156–161, 2012. Abstract
n/a
AlTaweel, A. M., G. A. Fawzy, S. Perveen, and P. Alam, "X-Ray crystallographic and validated HPTLC analysis of the biomarker chromone glucoside (schumaniofioside A) isolated from Acalypha fruticosa growing in Saudi Arabia.", Saudi Pharmaceutical Journal, vol. 25, pp. 955-960, 2017.
W
Hossam M. Zawbaa, E. Emary, A. E. Hassanien, and B. PARV, "A wrapper approach for feature selection based on swarm optimization algorithm inspired from the behavior of social-spiders", 7th IEEE International Conference of Soft Computing and Pattern Recognition, , Kyushu University, Fukuoka, Japan,, November 13 - 1, 2015. Abstract

In this paper, a proposed system for feature selection
based on social spider optimization (SSO) is proposed. SSO is
used in the proposed system as searching method to find optimal
feature set maximizing classification performance and mimics
the cooperative behavior mechanism of social spiders in nature.
The proposed SSO algorithm considers two different search
agents (social members) male and female spiders, that simulate
a group of spiders with interaction to each other based on the
biological laws of the cooperative colony. Depending on spider
gender, each spider (individual) is simulating a set of different
evolutionary operators of different cooperative behaviors that are
typically found in the colony. The proposed system is evaluated
using different evaluation criteria on 18 different datasets, which
compared with two common search methods namely particle
swarm optimization (PSO), and genetic algorithm (GA). SSO
algorithm proves an advance in classification performance using
different evaluation indicators

Zawbaa, H. M., E. Emary, A. E. Hassanien, and B. PARV, "A wrapper approach for feature selection based on swarm optimization algorithm inspired from the behavior of social-spiders", 7th IEEE International Conference of Soft Computing and Pattern Recognition, Kyushu University, Fukuoka, Japan, November 13 - 15, 2015.
Zawbaa, H. M., E. Emary, A. E. Hassanien, and B. PARV, "A wrapper approach for feature selection based on swarm optimization algorithm inspired from the behavior of social-spiders", Soft Computing and Pattern Recognition (SoCPaR), 2015 7th International Conference of: IEEE, pp. 25–30, 2015. Abstract
n/a
Tourism