Damnhour University

Veterinary, Egypt

Damnhour University

Veterinary, Egypt
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Pasqua A.,University of Trieste | Aly A.A.,Damnhour University
European Physical Journal Plus | Year: 2014

This paper reports a study on the cosmological application of interacting Ricci Dark Energy (RDE) density in the scalar Gauss-Bonnet framework. The interacting holographic RDE model has been employed to obtain the equation of state (EoS) in a spatially flat universe. The main results of this paper are that the reconstructed potential of scalar Gauss-Bonnet gravity for the interacting RDE model decays with the evolution of the universe. However, it is an increasing function of the scalar field (Formula presented.) . Both the strong and weak energy conditions are violated. A phantom-like behavior of the EoS parameter has been obtained. The effective EoS parameter (Formula presented.) stays below -1 but tends to -1 with the evolution of the universe. However, it cannot cross the phantom boundary. Finally, the interacting RDE model in Gauss-Bonnet gravity gives accelerated expansion of the universe. © 2014, Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg.


Pasqua A.,University of Trieste | Khurshudyan M.,Yerevan State University | Aly A.A.,Damnhour University
International Journal of Theoretical Physics | Year: 2014

In this paper, we studied the cosmological application of the interacting Ricci Dark Energy (RDE) model in the framework of the scalar Gauss-Bonnet modified gravity model. We studied the properties of the reconstructed potential V(t), the Strong Energy Condition (SEC), the Weak Energy Condition (WEC) and the deceleration parameter q for three different models of scale factor, i.e. the emergent, the intermediate and the logamediate one. We obtained that V(t), for the emergent scenario, has a decreasing behavior, while, for the logamediate scenario, the potential start with an increasing behavior then, for later times, it shows a slowly decreasing behavior. Finally, for the intermediate scenario, the potential has an initial increasing behavior, then for a time of t≈1.2, it starts to decrease. We also found that both SEC and WEC are violated for all the three scale factors considered. Finally, studying the plots of q, we derived that an accelerated universe can be achieved for the three models of scale factor considered. © 2014 Springer Science+Business Media New York.


Masoud M.S.,Alexandria University | Ali A.E.,Damnhour University | Ghareeb D.A.,Alexandria University | Nasr N.M.,Alexandria University
Journal of Chemical and Pharmaceutical Research | Year: 2013

Cephradine metal complexes with Cr(III), Mn(II), Fe(III), Co(II), Cu(II), Zn(II), Cd(II), Hg(II), mixed metals (Fe,Co) and (Fe,Cu) were synthesized and characterized by physicochemical and spectroscopic methods. Inhibitions of acetylcholinesterase, monoamine oxidase (MAO-B&A) by the prepared complexes were investigated. The brain AChE and MAO-A & B from Egyptian Mediterranean buffalo (Bas Buballus) was purified by ammonium sulphate precipitation and Sephadex G-25. The effect of the metallo cephradine on the activity of pure AChE and also (MAOB& A) were carried out in vitro by using standard colorimetric assays. The results revealed that AChE was inhibited by manganese and copper cephradine complexes in 1:1 and 3:1 (M:L) molar ratio, respectively as uncompetitive inhibitors with an enzyme-inhibitor dissociation constant (Ki value) of 21.75and 11.72 μmol/min/mg/protein and IC50 equals to 5.78 and 20 μM,respectively. Also, the inhibition of MAO-B &A was tested for synthesized cephradine metal complexes. The mixed metal (Fe,Cu) cephradine complex is the best inhibitor for MAO-B as uncompetitive inhibitor. Enzyme-inhibitor dissociation constant (Ki value) and IC50 were 36.61μmol/min/mg/protein and 80.69 μM, respectively. From this study, it was found that Mn(II) in 1:1 and Cu(II) in 3:1 (M:L) molar ratio cephradine complexes act as potent inhibitors for AChE, while, the mixed metal (Fe,Cu) cephradine complex was a potent inhibitor for MAO-B. So, these three metallocephradine can be used for preventing neurodegenerative diseases such as Alzheimer disease.


Aly A.A.,Damnhour University | Selim M.M.,Damietta University
European Physical Journal Plus | Year: 2015

The f(T) modified gravity model is considered in the framework of fractal space-time. Assuming only the time has a fractal profile while the other spatial coordinates have their normal geometrical descriptions, the Hubble parameter, H, the dark energy density, (Formula presented.) , the deceleration parameter, q, the pressure P, and state finder parameters r and s are reconstructed for our model. It is interesting to mention here that all the results are consistent with the recent present observations. © 2015, Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg.


Pasqua A.,University of Trieste | Assaf K.A.,University of Wasit | Aly A.A.,Damnhour University
International Journal of Theoretical Physics | Year: 2014

In this work, we study the power-law and the logarithmic entropy corrected versions of the Ricci Dark Energy (RDE) model in the framework of the Brans-Dicke cosmology non-minimally coupled with a chameleon scalar field φ{symbol}. Considering the presence of interaction between Dark Energy (DE) and Dark Matter (DM), we derived the expressions of some relevant cosmological parameters, i.e. the equation of state parameter ω D, the deceleration parameter q and the evolution of the energy density parameter Ω′D. © 2013 Springer Science+Business Media New York.


El-Wazzan E.,National Institute of Oceanography and Fisheries of Egypt | Radwan E.H.,Damnhour University
Egyptian Journal of Aquatic Research | Year: 2013

A histopathological evaluation of the carpet shell clam, Tapes decussatus collected from three Egyptian clam fisheries [El-Max (Alexandria), Timsah Lake (Ismailia) and Ezbet El-Borg (Damietta)] was conducted over a twelve months period (December 2010-November 2011) Total of 2160 clams (shell length = 17-51.5 mm) were examined for infection with trematode larvae. Smear preparations and histopathological examination (n= 30 and 30/site/month, respectively) showed maximum prevalence (% clams infected) of 81% and 65% in Timsah Lake in May and April, respectively. Maximum infection intensity (% area of transverse tissue section occupied by parasites, n=60 slides examined per site) was observed in the May samples of Timsah (78%), followed by El-Max (45%). Infection prevalence and intensity differences among sites were insignificant but differed significantly with season (P< 0.05) with maximum value in spring. Infection prevalence and intensity were significantly higher in females than in males (31.4% and 16.9%, respectively) and were synchronized with the spawning season. Digenean larvae caused a wide range of damage to clam gonads. Castration occurred in 15.1% of clams due to heavy infection and led to reproductive failure during spawning trials. Infection intensity increased with clam size (more in clams ≥ 31.9 mm SL with ripe gonads). © 2013 Production and hosting by Elsevier B.V.


Aly A.A.,Damnhour University | Fekry M.,King Saud University | Mansour H.,Cairo University
International Journal of Modern Physics D | Year: 2015

Within the framework of Chern-Simons (CS) modified gravity, we studied dark energy models. The new agegraphic dark energy (NADE) model, entropy-corrected new agegraphic dark energy (ECNADE) model and NADE model with generalized uncertainty principle (GUP) are investigated. For these models, we studied the evolution of scale factor a, Hubble parameter H and deceleration parameter q. On meantime, we studied the state finder parameters s and r. These models show some similar behavior with modified Chaplygin gas model in some regions, while in other regions some similarity with phantom and quintessence dark energy is noticed. © 2015 World Scientific Publishing Company.


PubMed | Osaka University and Damnhour University
Type: Journal Article | Journal: Genesis (New York, N.Y. : 2000) | Year: 2016

Tricho-rhino-phalangeal syndrome (TRPS) is a rare congenital disorder that is characterized by abnormal hair growth and skeletal deformities. These result in sparse hair, short stature, and early onset of joint problems. Recent reports have shown that a relatively high proportion of patients with TRPS exhibit a broad range of congenital heart defects. To determine the regulation of Trps1 transcription in vivo, we generated novel transgenic mice, which expressed Cre recombinase under the murine Trps1 proximal promoter sequence (Trps1-Cre). We crossed these mice with Cre reporter mice to identify Trps1 daughter cells. Labeled cells were observed in the appendicular joint tissue, dermal papilla of the hair follicles, cardiac valves, aortic sinus, atrial walls, and the interventricular septum. In situ analysis showed restricted Trps1 expression, which was observed in endocardial cushions of the outflow tract, and in leaflets of all mature cardiac valves. These results suggest that the Trps1 proximal promoter sequence contains some of the tissue-specific Trps1 regulatory region. Further, our findings partially explain why patients with TRPS show a broad range of congenital cardiac defects, although Trps1 expression is observed in a more restricted fashion. genesis 54:379-388, 2016. 2016 Wiley Periodicals, Inc.


Abou-El-Naga I.F.,Alexandria University | Radwan E.H.,Damnhour University
Revista de Biologia Tropical | Year: 2012

In Egypt, Biomphalaria alexandrina is the intermediate host for Schistosoma mansoni. The fates of Schistosoma miracidia in the snails varies between different species of Biomphalaria. The internal defense system is one of the factors that influence the susceptibility pattern of the snails. The interaction between Biomphalaria snails and S. mansoni needs to be identified for each species, and even between the members of the same species with different degrees of susceptibility. In the present study, the first generation of susceptible and resistant parents of B. alexandrina was examined histologically at the 30th day post exposure. The study includes the characterization of the immune response, as expressed by tissue reactions, of susceptible and resistant B. alexandrina snails against S. mansoni. It was also designed to determine the impact of the resistance increase in parent snails, on the mechanisms of interaction of their offspring against infection. The results showed that the infection rate of the offspring from the susceptible parents was 92%. No susceptible offspring was produced from the resistant parents. When the parents were of equal number of susceptible and resistant snails, they gave an offspring with an infection rate of 20%. Susceptible snails that had susceptible parents showed a higher degree of susceptibility than those that had both susceptible and resistant parents. A common feature of the resistant snails was the absence of any viable parasites. The tissue reactions of the resistant snails having only resistant parents occurred at the site of miracidial penetration. In resistant snails for which susceptible ones were included in their parents, the reactions occurred in the deep tissues. These results characterized the immune response of B. alexandrina snails against Schistosoma infection which was found to occur by two different mechanisms. One type of defense occurs in highly resistant snails, and employs direct miracidial destruction soon after parasite penetration. The other type occurs in less resistant snails where a delayed resistance development occurs after the dissemination of the sporocysts in the snail tissues. It seems that B. alexandrina snails respond more or less similar to B. glabrata. The results also proved that the immune response of the internal defense system increased with increasing the number of the inherited resistant genes.


Mohamed Essa R.,Damnhour University | Mohamed Ebrahim E.,Damnhour University
Life Science Journal | Year: 2013

The aim of this study was to compare the effect of breast milk versus therapeutic honey on the healing of cracked nipples. A quasi-experimental research design was carried out on a sample of (60) lactating women who were randomly selected from Salah abd-Rabo obstetric and gynecological clinic, obstetric and gynecologic Sahala center in Alexandria and subjects homes. The selected subjects were equally divided into two study groups. Each group was instructed to apply one of the two treatment modalities for 4 weeks duration. Four tools were used to collect the necessary data. The first tool was a structured interview schedule to elicit the socio-demographic and biological characteristic. The second tool was WHO B-R-E-A-S-T Feed observation form. The third tool was the healing and pain assessment scale, which comprised two parts: part 1: modified Reeda Scale & part 2: Visual analogue Scale. The fourth tool was an observational follow up chick list to assess healing speed of cracked nipples among the studied groups. The results revealed that the entire respondent's (100.0%) were suffering from nipple's redness, fissure and pain. while more than one-tenth (13.7%) of them have bleeding. Complete recovery from signs and symptoms of cracked nipples was significantly faster among women who had used the therapeutic honey 'Apicare'. The study concluded that "therapeutic honey was a better treatment for cracked nipple compared to breast milk". Consequently, it is recommended that each lactating mother should be observed for mother's and infant's positioning and attachment at the onset of breastfeeding and if needed given counseling on correct positioning and attachment.

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