المؤلفون: Abeer A.K. Kirrella, Seham El-Kassas, Karima El-Naggar, Livio Galosi, Lucia Biagini, Giacomo Rossi, Alessandro Di Cerbo, Mahmoud Alagawany, Mohamed Kassab, Rasha A. Al Wakeel

المصدر: Poultry Science, Vol 102, Iss 2, Pp 102360- (2023)

مصطلحات موضوعية: corn silk, Japanese quail, growth, egg quality, blood biochemistry, intestinal morphology, Animal culture, SF1-1100

الوصف: ABSTRACT: The current study aimed to investigate the dietary supplementation effect of corn silk (CS) on performance and blood chemistry of brown and white-feathered quails during the grower and layer periods. Japanese quails of brown and white-feathered color (180 birds/variety at 2 wks old) were randomly allotted into three groups with 3 replicates each (n = 20 birds/replicate). Corn silk powder (CS) was supplemented to the basal diet at 0, 1, and 2% of the diet for each quail variety for 1-month growing period, then continued for another 6-wk laying period to assess the egg production and egg quality characteristics. CS supplementation at 1% and 2% for brown and white-feathered quails respectively improved their growth performance (body weight and weight gain), carcass yield, and intestinal villi length with increasing feed consumption but without changes in feed conversion ratio. In both quail varieties, CS addition had a hypolipidemic effect, confirmed by lowering serum triglyceride (TG), cholesterol (CHO), and low density lipoprotein (LDL) while increased high density lipoprotein (HDL) concentrations (P < 0.05) with a clear response observed in white quails than the brown ones. Besides, CS supplementation increased (P = 0.002) hen day egg production in brown feathered quails, while reducing it in the white-feathered quails compared with the CS-free diet. The increased egg production was not significantly (P > 0.05) correlated with lower content of TG and CHO, while significantly increased the antioxidant content in both quail varieties (P < 0.05). Moreover, CS dietary supplementation significantly enhanced (P = 0.003) the yolk color, especially in brown-feathered quail. In conclusion, CS can be safely supplemented to the Japanese quail diet (1% and 2% for brown-feathered and white-feathered quails respectively) to improve growth performance, and egg quality characteristics.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S003257912200654XTest; https://doaj.org/toc/0032-5791Test

الوصول الحر: https://doaj.org/article/7cec7822f9354983b8e5837758b7e5a5Test

المؤلفون: Chourouk Ghodhbane, Mohamed Kassab, Sassi Maaloul, Hasnaa Aniss, Marion Berbineau

المصدر: IEEE Access, Vol 10, Pp 63579-63591 (2022)

مصطلحات موضوعية: ITS-G5, LTE-V2X, QoS, SPS, V2V, Electrical engineering. Electronics. Nuclear engineering, TK1-9971

الوصف: With the growing importance of cooperative intelligent transport systems (C-ITS), 3GPP has standardized LTE-V2X (Long Term Evolution - Vehicle-to-everything) in Release 14 to address specifically vehicle-to-everything (V2X) connectivity. This standard introduces a mode 4, in which vehicles allocate radio resources autonomously without cellular infrastructure support for direct vehicle-to-vehicle (V2V) communications. However, as LTE-V2X is a recent technology (compared to WAVE and ITS-G5), it is not sufficiently evaluated in the literature. In this work, we propose an evaluation of LTE-V2X mode 4 performances considering the impact of the parameters of the sensing-based resource allocation mechanism, the traffic load and the Quality of service (QoS) mechanism. In addition, we propose a comparative study of LTE-V2X mode 4 with ITS-G5. Based on several simulation scenarios from 3GPP, we prove that the Sensing-based SPS mechanism parameters and the traffic load significantly impact the performance offered by LTE-V2X. In addition, we show that the QoS mechanism of LTE-V2X outperforms the ITS-G5 one in a realistic multi-application context.

وصف الملف: electronic resource

العلاقة: https://ieeexplore.ieee.org/document/9794751Test/; https://doaj.org/toc/2169-3536Test

الوصول الحر: https://doaj.org/article/cca01d8e739943ecae6e367ccfeab95bTest

المؤلفون: Sassi Maaloul, Hasnaa Aniss, Mohamed Kassab, Marion Berbineau

المصدر: IEEE Access, Vol 9, Pp 117868-117879 (2021)

مصطلحات موضوعية: Cooperative intelligent transport systems (C-ITS), vehicular and wireless technologies, Cellular-V2X, ITS-G5, vehicle-to-everything (V2X), Electrical engineering. Electronics. Nuclear engineering, TK1-9971

الوصف: The objective of vehicular communication is to improve road safety and traffic efficiency through various cooperative intelligent transport system (C-ITS) services. These services allow information exchange between vehicles and other communication entities (e.g., vehicles, infrastructure, pedestrians). In addition, many advanced services are envisaged to support autonomous vehicles and safety applications. Therefore, the performance requirements of such services are considered highly critical for road safety. However, all these services increase the channel load, and thus, it isn’t easy to differentiate which service has a higher priority for accessing communication channels. In this paper, we focus on the classification of C-ITS services, which allows the cohabitation of all services considering the strict performance requirements for some services. The aim is to classify C-ITS services based on their packet delay requirements to define higher priority for critical services to ensure their dissemination, especially under congestion conditions. Then, we present protocols and quality of service (QoS) mechanisms that can map this classification to the available vehicular networks.

وصف الملف: electronic resource

العلاقة: https://ieeexplore.ieee.org/document/9516014Test/; https://doaj.org/toc/2169-3536Test

الوصول الحر: https://doaj.org/article/30384b9b9fef48e8ae77e9a3f6aa94cdTest

المؤلفون: Atef Oreiby, Ayman S. Seada, Mohamed F. Abou Elazab, Walied Abdo, Mohamed Kassab, Yamen Hegazy, Hazim O. Khalifa, Tetsuya Matsumoto

المصدر: Animals, Vol 12, Iss 16, p 2084 (2022)

مصطلحات موضوعية: sheeppox, emergency vaccination, Egypt, control, outbreak, Veterinary medicine, SF600-1100, Zoology, QL1-991

الوصف: This study aimed to investigate a sheeppox outbreak in a highly susceptible naive sheep population in Kharsit village, Gharbia Governorate, Egypt. Moreover, to compare commercial sheeppox vaccines, the Romanian strain and RM-65 vaccines, as emergency vaccination against sheeppox under field conditions. In December 2018, a sheeppox outbreak occurred in a flock of 65 sheep upon the purchase of an apparently healthy ewe from outside the village. This ewe showed a systemic disease with cutaneous lesions after a few days, thereafter more cases began to appear. Cutaneous lesions in other sheep in the flock in the form of macules, papules, and scabs were common in wool-less areas of the body, in addition to fever and respiratory disorders. Postmortem findings revealed the congestion of visceral organs with apparent gross pathology of the lung. Biopsies of cutaneous lesions and visceral organs were collected, and sheeppox was identified by histopathology and transmission electron microscopy, which showed the existence of sheeppox cells and intracytoplasmic brick-shape sheeppox virions. The Romanian strain and RM-65 vaccines were used for the emergency vaccination for two different groups of animals and the third group was left as a control group. Serum samples were collected before vaccination as well as 21 days post-vaccination, and serum protein fractionation analysis was performed for all groups. The outbreak ended after 2.5 months, the cumulative incidence was 66.2%, and the overall case fatality was 51.1%. There was significantly higher protection against sheeppox infection and mortalities among RM-65 vaccine immunized group compared to Romanian strain vaccine-immunized animals at p < 0.05. RM-65-vaccinated animals did not show sheeppox cases or mortalities, compared to Romanian strain-vaccinated animals, which had mild pox signs in 78% of animals and case fatality of 35.7%. The serum protein analysis also indicated the superior performance of the RM-65 vaccine; it increased the level of α1-globulin and β-globulin compared to the Romanian strain, which increased the level of β-globulin only. The current study shows a better performance of the tested RM-65 than the Romanian strain vaccine for emergency vaccination against sheeppox under field conditions. These findings point to the validity of emergency vaccination against sheeppox and the importance of the comparative field evaluation of vaccines; however, wide-scale studies are required for further evaluation. Future investigation of whether the Romanian strain itself or vaccine-production-related issues are responsible for these findings is required.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2076-2615/12/16/2084Test; https://doaj.org/toc/2076-2615Test

الوصول الحر: https://doaj.org/article/feec04d06589442ba3416f8de45b81d0Test

المؤلفون: Laurence J. Dobbie, Mohamed Kassab, Andrew S. Davison, Pete Grace, Daniel J. Cuthbertson, Theresa J. Hydes

المصدر: Journal of Clinical Medicine, Vol 10, Iss 24, p 5755 (2021)

مصطلحات موضوعية: fibrosis, NAFLD, diabetes, screening, primary care, secondary care, Medicine

الوصف: Diabetes is a driver of non-alcoholic fatty liver disease (NAFLD) and fibrosis. We determine current practices in examining liver fibrosis in people with diabetes and record prevalence levels in primary and secondary care. We extracted HbA1c results ≥48 mmol/mol to identify people with diabetes, then examined the proportion who had AST, ALT, and platelets results, facilitating calculation of non-invasive fibrosis tests (NIT), or an enhanced liver fibrosis score. Fibrosis markers were requested in only 1.49% (390/26,090), of which 29.7% (n = 106) had evidence of significant fibrosis via NIT. All patients at risk of fibrosis had undergone transient elastography (TE), biopsy or imaging. TE and biopsy data showed that 80.6% of people with raised fibrosis markers had confirmed significant fibrosis. We also show that fibrosis levels as detected by NIT are marginally lower in patients treated with newer glucose lowering agents (sodium-glucose transporter protein 2 inhibitors, dipeptidyl peptidase-4 inhibitors and glucagon-like peptide-1 receptor agonists). In conclusion by utilising a large consecutively recruited dataset we demonstrate that liver fibrosis is infrequently screened for in patients with diabetes despite high prevalence rates of advanced fibrosis. This highlights the need for cost-effectiveness analyses to support the incorporation of widespread screening into national guidelines and the requirement for healthcare practitioners to incorporate NAFLD screening into routine diabetes care.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/2077-0383/10/24/5755Test; https://doaj.org/toc/2077-0383Test

الوصول الحر: https://doaj.org/article/0eac450daf754f1da60498f24b35c29aTest

المؤلفون: Nadia Mahfouz, Eman Moustafa, Mohamed Kassab, Wesam Marzouk

المصدر: Slovenian Veterinary Research, Vol 56, Iss 22-Suppl (2019)

مصطلحات موضوعية: Veterinary medicine, SF600-1100

الوصف: The present study was carried out to screen the predominant mycotic infections among freshwater fishes (Oreochromis niloticus and Clarias gariepinus) in Kafrelsheikh fish farms; with special focus on the seasonal incidence; as well as, the histopathological changes induced by the detected fungi. 500 specimens of freshwater fishes (400 O. niloticus and 100 C. gariepinus) were investigated for seasonal incidence of mycotic diseases. Mycological examination revealed the isolation of 2148 fungal isolates from 375 diseased and 125 apparently healthy fish samples (1828 mould and 320 yeast isolates), of which 1258 were isolated from O. niloticus and 890 isolates from C. gariepinus. Saprolegnia was the predominant among diseased fishes with highest prevalence in late autumn (10.68%, 6.96%) and winter (6.81%, 7.87%) in O. niloticus and C. gariepinus, respectively. However, Pencillium sp. and Aspergillus sp. were the most predominant fungi isolated from apparently healthy fishes. The highest prevalence of Pencillium sp. were recorded in winter, whileas Aspergillus showed variations between species; Aspergillus flavus, Aspergillus niger were more prevalent in summer (25.44%, 23.22%) and (26.9%, 37.44%) and Aspergillus terrus, Aspergillus fumigatus were more prevalent in autumn (5.98%, 5.67%) and (7.69%, 8.23%) in O. niloticus and C. gariepinus, respectively. Moreover, the highest prevalence of Fusarium species was recorded in spring (11.8%, 5.91%) from O. niloticus, C. gariepinus, respectively. Mucor recorded the highest prevalence in autumn (20.09%) in O. niloticus and winter (29.21%) in C. gariepinus; whileas Rhizopus was highest in summer (7.89%, 5.21%) in O. niloticus and C. gariepinus, respectively. Four genera from yeast were isolated; Candida sp. (28.44%, 36.27%), Rhodotorula sp. (36.24%, 24.51%), Cryptococcus sp. (16.97%, 20.59%) and Trichosporon Sp. (18.35%, 18.63%) in O. niloticus and C. gariepinus, respectively. The histopathological findings revealed severe degenerative changes in skin and gills with presence of fungal hyphae and spores. Key words: Clarias gariepinus; moulds; mycotic diseases; Oreochromis niloticus; yeast

وصف الملف: electronic resource

العلاقة: https://www.slovetres.si/index.php/SVR/article/view/771Test; https://doaj.org/toc/1580-4003Test; https://doaj.org/toc/2385-8761Test

الوصول الحر: https://doaj.org/article/85afa3b34d7f4fefa05af4acf93810d0Test

المؤلفون: Santosh R Patil, Nidhi Yadav, Mohammed Assayed Mousa, Abdalwhab Alzwiri, Mohamed Kassab, Rohit Sahu, Satish Chuggani

المصدر: Journal of Oral Research and Review, Vol 7, Iss 2, Pp 41-43 (2015)

مصطلحات موضوعية: Estrogen, menstrual cycle, progesterone, temporomandibular disorders, Dentistry, RK1-715

الوصف: Aim: The aim of the present study is to investigate the role of female reproductive hormones estrogen and progesterone in temporomandibular disorder (TMD) in female patients. Materials and Methods: Serum estrogen and progesterone levels of 200 female participants who had varying grades of TMD were measured by enzyme immunoassay competition method in the luteal phase of menstrual cycle. Results: Mean serum concentration of estrogen was 302.1 ± 3.16 pg/mL, and the mean serum concentration of progesterone was 1.68 ± 38.3 ng/mL. Mean serum levels of estrogen and progesterone increased with increasing severity of TMD. Conclusion: Increased serum levels of estrogen and progesterone with increased grade of severity of TMD suggest role of these hormones as etiological factors for TMD.

وصف الملف: electronic resource

العلاقة: http://www.jorr.org/article.asp?issn=2249-4987;year=2015;volume=7;issue=2;spage=41;epage=43;aulast=PatilTest; https://doaj.org/toc/2249-4987Test; https://doaj.org/toc/2394-2541Test

الوصول الحر: https://doaj.org/article/148b70fc32594ebf9cacac22fd3c02b8Test

المؤلفون: Mohamed Kassab, Jean-Marie Bonnin, Abdelfettah Belghith

المصدر: Journal of Computer Systems, Networks, and Communications, Vol 2010 (2010)

مصطلحات موضوعية: Computer engineering. Computer hardware, TK7885-7895, Electronic computers. Computer science, QA75.5-76.95

الوصف: The Next Generation Wireless Networks (NGWNs) are seemed to be heterogeneous networks based on the integration of several wireless technologies. These networks are required to achieve performances equivalent to classic wireless networks by ensuring the continuity of communications and the homogeneity of network management during horizontal and vertical handovers. This task is even more important when management services, like security and quality of service (QoS), are deployed at access technology level. In this paper, we propose a framework for heterogeneous wireless technology integration based on network architecture skeleton and a handover management mechanism. This framework optimizes the layer-2 handover procedure to achieve performances required by sensitive applications while ensuring the minimization of signaling overhead required for operated networks. As an application example, we make use of this framework to propose a heterogeneous network based on WiFi and WiMAX technologies. We present an application example of the framework using the specification of a WiFi-WiMAX network. We propose several performance evaluations based on simulation tests based on this application. The latter confirm the efficiency of handover delay optimization and the minimization of management signaling costs.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1687-7381Test; https://doaj.org/toc/1687-739XTest

الوصول الحر: https://doaj.org/article/c73c8c11d79b43069dd36cfb4aacb7b0Test

المؤلفون: Mohamed Kassab, Abd elmoktader elsayed, salah mousa, Hadeer salah, Moatez gomaa, Nahla Moktader, Abeer Abuhagaza

المصدر: Journal of Petroleum and Mining Engineering. :67-79

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::4074b3add1006f042822e307e2a7048eTest
https://doi.org/10.21608/jpme.2023.186245.1150Test

المؤلفون: Hesham Abuseda, Bassem Nabawy, Mohamed Kassab, Marwa Ei-Sawy

المصدر: Journal of Petroleum and Mining Engineering. :19-30

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::8d036adf91acde9549457564f8d1193bTest
https://doi.org/10.21608/jpme.2022.125177.1116Test