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Zaki, J. G., N. M. El Defrawy, S. R. Tewfik, and M. A. El-Rifai, "Assessment of vapour compression for the concentration of dilute urea solutions", Desalination, vol. 128, no. 2: Elsevier, pp. 111–121, 2000. Abstract
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Zaki, S. M., E. A. Mohamed, S. A. Fattah, H. Abdullah, and L. Kaszubowska, "Age-associated functional morphology of thyroid and its impact on the expression of vimentin, cytokeratins and VEGF. The role of nigella in refinement.", Folia histochemica et cytobiologica, vol. 56, issue 3, pp. 159-171, 2018. Abstract

INTRODUCTION: Aging causes morphological and functional changes in the thyroid gland. Free radicals play a key role in the pathology of normal aging. Vimentin and cytokeratin are cytoskeletal intermediate filaments that are often used as indirect indices of tissue injury. The aim of the study was to clarify the age-related alterations in the structure and function of the thyroid gland. The relationship between oxidative/antioxidative stress markers and cytoskeletal intermediate filaments (vimentin and cytokeratin) and oxidative/antioxidative stress markers as well as vascular endothelial growth factor (VEGF) during aging were elucidated. Finally, the role of Nigella sativa (NS) oil in ameliorating age-related alterations of the structure and function of the thyroid gland was studied.

MATERIAL AND METHODS: Thirty Sprague-Dawley albino rats were divided into five groups: young adult control, young adult NS-treated, late adult control, late adult NS-treated, and senile. The age of young adult, late adult, and senile rats was nearly 7, 18 and 22 months, respectively. NS oil was added to food pellets and was administered at a daily dose of 0.1 g/kg body weight for one month. The thyroid gland was dissected and fixed immediately in 10% formalin saline. The assessment of thyroid structure was based on hematoxylin and eosin, and Masson's trichrome stainings, and histomorphometric analysis of the deparaffinized sections. Localization and distribution of vimentin and cytokeratin filaments was assessed by immunohistochemistry. Measurements of VEGF gene expression by qPCR and oxidative/antioxidative markers (malondialdehyde and glutathione content, superoxide dismutase activity) in thyroid gland homogenates were performed. Serum concentration of thyroid hormones (T3, T4) and TSH were assessed by radioimmunoassay.

RESULTS: Follicles in the late adult control group were dilated and disrupted. Follicular cells showed cytoplasmic vacuolation. Follicles in the thyroids of senile rats were of irregular shape, often with cellular exfoliations. Many follicles were dilated and lined with flattened cells. A notable amelioration of these morphological alterations was observed in late adult NS-treated rats. Decrease in serum T3 and T4 levels and increase in TSH levels were observed in the late adult control and senile groups. A clear shift of the oxidative/antioxidative markers (MDA/ /GSH, SOD) was observed in the late adult control and senile groups in favor of oxidants. Administration of NS to late adult rats resulted in normalization of these parameters. Increased area of collagen fibers, immunoreactivity of vimentin and cytokeratin filaments and VEGF gene expression were observed in the thyroids of late adult and senile rat groups as compared to young animals. The mean number of follicular cells decreased in the late adult control and senile groups. Administration of NS to the late adult rats returned these parameters to the level of the young adult rats.

CONCLUSIONS: Aging-related alterations in both structure and function of the rat thyroid gland that are associated with increased indices of oxidative stress might be abrogated by administration of antioxidative agents present in Nigella sativa oil.

Zaki, S. M., A. H. K. Abdelmaksoud, B. E. A. Khaled, and I. A. Abdel Kader, "Anatomical variations of hepatic artery using the multidetector computed tomography angiography", Folia Morphologica, vol. 79, issue 2, pp. 247-254, 2020.
zaki, A., S. El-Hadad, and W. Khalifa, "Assessment of Tribological Properties of Cast and Forged Ti-6Al-7Nb and Ti-6Al-4V Alloys for Dental Applications", TMS 145 Annual Meeting & Exhibition: Supplemental Proceedings, Nashville, USA, TMS, pp. 693–700, 2016.
Zaki, S. M., E. A. Mohamed, S. A. Fattah, H. Abdullah, and L. Kaszubowska, "Age-associated functional morphology of thyroid and its impact on the expression of vimentin, cytokeratins and VEGF. The role of nigella in refinement.", Folia histochemica et cytobiologica, vol. 56, issue 3, pp. 159-171, 2018. Abstract

INTRODUCTION: Aging causes morphological and functional changes in the thyroid gland. Free radicals play a key role in the pathology of normal aging. Vimentin and cytokeratin are cytoskeletal intermediate filaments that are often used as indirect indices of tissue injury. The aim of the study was to clarify the age-related alterations in the structure and function of the thyroid gland. The relationship between oxidative/antioxidative stress markers and cytoskeletal intermediate filaments (vimentin and cytokeratin) and oxidative/antioxidative stress markers as well as vascular endothelial growth factor (VEGF) during aging were elucidated. Finally, the role of Nigella sativa (NS) oil in ameliorating age-related alterations of the structure and function of the thyroid gland was studied.

MATERIAL AND METHODS: Thirty Sprague-Dawley albino rats were divided into five groups: young adult control, young adult NS-treated, late adult control, late adult NS-treated, and senile. The age of young adult, late adult, and senile rats was nearly 7, 18 and 22 months, respectively. NS oil was added to food pellets and was administered at a daily dose of 0.1 g/kg body weight for one month. The thyroid gland was dissected and fixed immediately in 10% formalin saline. The assessment of thyroid structure was based on hematoxylin and eosin, and Masson's trichrome stainings, and histomorphometric analysis of the deparaffinized sections. Localization and distribution of vimentin and cytokeratin filaments was assessed by immunohistochemistry. Measurements of VEGF gene expression by qPCR and oxidative/antioxidative markers (malondialdehyde and glutathione content, superoxide dismutase activity) in thyroid gland homogenates were performed. Serum concentration of thyroid hormones (T3, T4) and TSH were assessed by radioimmunoassay.

RESULTS: Follicles in the late adult control group were dilated and disrupted. Follicular cells showed cytoplasmic vacuolation. Follicles in the thyroids of senile rats were of irregular shape, often with cellular exfoliations. Many follicles were dilated and lined with flattened cells. A notable amelioration of these morphological alterations was observed in late adult NS-treated rats. Decrease in serum T3 and T4 levels and increase in TSH levels were observed in the late adult control and senile groups. A clear shift of the oxidative/antioxidative markers (MDA/ /GSH, SOD) was observed in the late adult control and senile groups in favor of oxidants. Administration of NS to late adult rats resulted in normalization of these parameters. Increased area of collagen fibers, immunoreactivity of vimentin and cytokeratin filaments and VEGF gene expression were observed in the thyroids of late adult and senile rat groups as compared to young animals. The mean number of follicular cells decreased in the late adult control and senile groups. Administration of NS to the late adult rats returned these parameters to the level of the young adult rats.

CONCLUSIONS: Aging-related alterations in both structure and function of the rat thyroid gland that are associated with increased indices of oxidative stress might be abrogated by administration of antioxidative agents present in Nigella sativa oil.

Zaki, M. M., A. E. Eissa, and S. Saeid, "Assessment of the Immune Status in Nile Tilapia (Oreochromis niloticus) Experimentally Challenged with Toxogenic / Septicemic Bacteria During Treatment Trial with Florfenicol and Enrofloxacin", World Journal of Fish and Marine Sciences, 2011. Abstract

Limiting factors to the tilapia farming industry are numerous and deeply embedded in the environmental paradigm. Infectious diseases are moved to the top list of limiting factors that harshly endangering the fish health with consequent negative impact on the entire population ecology.

Zaki, M. A., L. N. ElSherif, and R. M. Shamloul, Assessment of the response to antiepileptic drugs in epileptic patients with structural lesion(s) on neuroimaging, , vol. 56, issue 1, pp. 108, 2020. AbstractWebsite

Focal epilepsy is the most common form of epilepsy in adults. Advances in brain imaging allowed better identification of different structural lesions underlying focal epilepsy. However, the response to antiepileptic drugs in lesional epilepsy is heterogeneous and difficult to anticipate. This study aimed to evaluate the response to antiepileptic drugs (AED) in patients with lesional epilepsy and to identify the predictors for poor seizure control.

Zaki, H. F., R. M. Abdelsalam, D. M. El-Tanbouly, and A. M. Zaki, "Anti-inflammatory and Anti-apoptotic Potentials of Apigenin against Liver Injury Induced by Ischemia-Reperfusion in Rats", bulletin of faculty of pharmacy cairo university, vol. 57, issue 1, pp. 46-54, 2019.
Zaki, R. A., B. H. AbdelAleem, and A. A. A. Hassan, "Abrasion Resistance of Fiber-Reinforced Concrete under Cold Temperatures.", ACI Materials Journal, vol. 117, issue 5, pp. 221-232, 2020.
Zaki, H. F., R. M. Abdelsalam, D. M. El-Tanbouly, and A. M. Zaki, "Anti-inflammatory and Anti-apoptotic Potentials of Apigenin against Liver Injury Induced by Ischemia-Reperfusion in Rats", B-FOPCU, vol. 57, issue 1, pp. 46-54, 2019. apigenin.pdf
Zaki, S. M., A. H. K. Abdelmaksoud, B. E. A. Khaled, and I. A. Abdel Kader, "Anatomical variations of hepatic artery using the multidetector CT angiography.", Folia morphologica, 2019. Abstract

BACKGROUND: the frequency of normal and aberrant hepatic arteries differs among ethnicities. The aim of our work was to study the frequency of normal and aberrant hepatic arteries among Egyptian using multidetector CT (MDCT) and to compare our prevalence with the prevalence of other nationalities. In addition, the gender differences of such variations were clarified. In addition, the arterial feeding of hepatic segment IV was determined.

MATERIALS AND METHODS: The present study was carried out on 500 patients (409 males and 91 females). Abdominal CT was performed using two MDCT systems, a 64-row, and a 256-slice system.

RESULTS: According to Michel's classification, the normal anatomy (type I) was observed in 369 cases (73.8%), while anomalous hepatic arterial pattern was detected in 131 cases (26.2%).These anomalies were distributed as the following; type II in 36 cases (7.2%) , type III in 60 cases (12%), types IV and V in 5 cases for each (1% each) , type VI in 14 (2.8%) and types VIII & IX in a single case for each (0.2% each). Neither type VII nor type X was detected. Nine unclassified cases (1.8 %) were observed. According to Hiaat's classification, the anomalies were distributed as the following; type II in 41 cases (8.2%), type III in 74 cases (14.8 %), type IV in 6 (1.2 %), type V in a single case (0.2%) and type VI in 2 cases (0.4%). Finally, seven unclassified cases (1.4 %) were observed. Common hepatic artery (CHA) originated from celiac trunk in 98% (79.8% males and 18.2% females). It originated from the abdominal aorta in 0.4% and from the superior mesenteric artery (SMA) in 0.4%. It was absent in 1.2%. Right hepatic artery (RHA) originated from the CHA in 86.6% (69.8% males and 16.8 % females) and from the SMA in 13.2% (11.8% males and 1.4% females) and from the abdominal aorta in 0.2% (a single male case). Left hepatic artery (LHA) originated from the CHA in 91.2% and from the left gastric artery (LGA) in 8.8%. The most common origin of the segment IV blood supply was the LHA in 60.8%, followed by the RHA in 35%. Less commonly, blood supply derived from the hepatic artery proper (HAP) in 1%. Combined supply derived from RHA and LHA in 0.8%, from the LHA and HAP in 2% and the least encountered was from the RHA and HAP in 0.4%.

CONCLUSIONS: Hepatic artery variations among Egyptians have a different distribution when compared to such variations among other species. The normal hepatic arterial pattern was observed in 73.8%, while the anomalous was detected in 26.2%. The CHA originated from the celiac trunk in 98%, the RHA originated from the CHA in 86.6% and the LHA originated from the CHA in 91.2%. The most common arterial supply of the hepatic segment IV is derived from the LHA (60.2%).

Zaki, S. A., S. H. Abdelatif, N. R. Abdel-Mohsen, and F. A. Ismail, "Antimicrobial Activities of Pomegranate (Punica granatum L.) Fruit Peel Extract", 3rd World Congress on Nutrition, Dietetics & Nutraceuticals, 2019. Abstractantimicrobial_activities_of_pomegranate_abstract..pdf

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Zalabani, S. E. M., H. I. El-Askary, O. M. Mousa, and M. Y. Issa, "Acaricidal activity of Swietenia mahogani and Swietenia macrophylla ethanolic extracts against Varroa destructor in honeybee colonies", Experimental Parasitology, vol. 130, pp. 166-170, 2012.
Zalabni, S. E. M., H. I. El-Askary, M. Y. Issa, and E. Abdel-Sattar, "Acaricidal activity of Swietenia mahogani and Swietenia macrophylla ethanolic extracts against Varroa destructor in honeybee colonies", Experimental Parasitology, vol. 130, pp. 166-170, 2012.
Zalata, A., H. K. Morsy, A. Badawy, S. Elhanbly, and T. Mostafa, "Angiotensin converting enzyme gene I/D polymorphism seminal associations in infertile men", J Urol, vol. 187 , issue 5, pp. 1776-80, 2012.
Zalata, A., N. Mokhtar, A. Badawy, G. Othman, M. Alghobary, and T. Mostafa, "Androgen receptor expression relationship with semen variables in infertile men with varicocele", J Urol, vol. 189, issue 6, pp. 2243-7, 2013.
Zawam, H., J. L., C. J., A. M.M.O.M., W. F., G. G., and A. - M. Y, "ANALYSIS OF THE EFFECTS OF DIFFERENT MATCHING CONE BEAM CT STRATEGIES ON THE DOSE DISTRIBUTION IN BREAST CANCER BY t-IMRT AND VMAT DELIVERIES.", UAE cancer congress, Dubai, 2016. abstract_uae.pdf
Zawam, S. H. M., A. Gad, I. E. Geady, and M. K. A. el Aziz, All thorough arthroscopic reduction and fixation of depressed tibial plateau fractures, , 2018.
Zawbaa, H. M., M. Abbass, S. H.Basha, M. Hazman, and A. E. Hassenian, "An automatic flower classification approach using machine learning algorithms", 2014 International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2014., 2014.
Zawbaa, H. M., and A. E. Hassanien, Automatic Soccer Video Summarization, , Cairo, Cairo Unversity, 2012. Abstract

This thesis presents an automatic soccer video summarization system using machine learning (ML) techniques. The proposed system is composed of ve phases. Namely; in the pre-processing phase, the system segments the whole video stream into small video shots. Then, in the shot processing
phase, it applies two types of classi cation (shot type classi cation and play / break classification) to the video shots resulted from the pre-processing phase. Afterwards, in the replay detection phase, the proposed system applies two machine learning algorithms, namely; support vector machine (SVM) and arti cial neural network (ANN), for emphasizing important segments with championship logo appearance. Also, in the excitement event detection phase, the proposed system uses both machine learning algorithms for detecting the scoreboard which contain an information about the score of the game. The proposed system also uses k-means algorithm and Hough line transform for detecting vertical goal posts and Gabor lter for detecting goal net. Finally, in the event detection and summarization phase, the proposed system highlights the most important events during the match. Experiments on real soccer videos demonstrate encouraging results. The event detection and summarization has attained recall 94% and precision 97.3% for soccer match videos from ve international soccer championships.

Zawbaa, H. M., and A. E. Hassanien, Automatic Soccer Video Summarization, : Cairo Unversity, 2012. Abstract
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Zawbaa, H. M., M. Abbass, M. Hazman, and A. E. Hassenian, "Automatic Fruit Image Recognition System based on Shape and Color Features ", The 2nd International Conference on Advanced Machine Learning Technologies and Applications , Egypt, November 17-19, , 2014.
Zawbaa, H. M., M. Hazman, M. Abbass, and A. E. Hassanien, "Automatic fruit classification using random forest algorithm", Hybrid Intelligent Systems (HIS), 2014 14th International Conference on: IEEE, pp. 164–168, 2014. Abstract
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