201 research outputs found

    Introduction of Purple and Deep Purple F1 Carrot Hybrids to Egypt Showed High Antioxidant Activity and High Content of Total Flavonoids and Phenols

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    For the improvement of carrot cultivation in Egypt and because of the deterioration of the local Egyptian purple carrots, two novel colored (Purple and Deep Purple) F1 carrot hybrids were introduced for the first time from Netherland to be evaluated and compared to the broadly cultivated yellow Japanese F1 hybrid (Kuruda) under the Middle Egypt sandy soil growing conditions. The horticultural evaluation showed that the two purple hybrids have elongated thick roots and good vegetative growth and gave a very high yield of roots in two successive winter seasons of 2013/2014 and 2014/2015. The Deep Purple hybrid exceeded the other two hybrids in almost all studied chemical and horticultural characteristics. It showed about three folds of leaves fresh weight/plant, two folds of both root fresh weight/plant and yield/m2 when compared with Purple and Kuruda hybrids. The chemical analyses declared that the Purple and Deep Purple hybrids have higher contents of all estimated components and the Deep Purple hybrid had the highest values of total flavonoids (about two folds), total phenols (about 5-6 folds), antioxidant activity percentage (7-8 times), and total soluble solids percentage (1.5-2 times) than that of the yellow F1 hybrid “Kuruda”. These newly introduced two Purple and Deep Purple F1 hybrids may be very promising in production and processing purposes of purple carrots and good materials in carrot breeding programs in Egypt

    An Improve the Onboarding Process in Trade Finance Applications Using Blockchain Technology

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    Today, challenges in Know Your Customer (KYC) and Anti-Money Laundering (AML) processes include inefficiencies, data silos, and the risk of fraudulent activities. Integrating blockchain technology offers a transformative solution to these issues. Blockchain's decentralized and tamper-resistant nature ensures a single, verifiable source of truth for customer information, reducing data discrepancies across institutions. Smart contracts can automate AML compliance checks, ensuring real-time monitoring and rapid response to suspicious activities. The immutability of blockchain records enhances auditability, facilitating regulatory compliance. Furthermore, the secure and transparent nature of blockchain instills trust among stakeholders, fostering collaboration in combating financial crimes. By leveraging blockchain in KYC and AML processes, the financial industry can achieve enhanced efficiency, reduced fraud, and strengthened regulatory adherence

    Role of MR as Non-Invasive Procedure in Assessment of Fatty Liver Infiltration in Potential Liver Donor Versus Biopsy

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    Background: Significant hepatic steatosis can impact surgical results in the donor. Liver biopsy is the gold standard for hepatic steatosis diagnosis and assessment. Liver biopsy is not useful for screening or monitoring hepatic steatosis in living liver donors. MR spectroscopy and the proton density fat fraction (FF) approach have shown encouraging results in assessing hepatic steatosis. Aim and Objectives: is to correlate between the MRI-PDFF techniques as a non-invasive technique in pre-operative assessment   of quantification of liver fat in comparison to the liver biopsy. Patients and Methods: This prospective control study was conducted at the National Hepatology and tropical medicine research institute including 42adult potential hepatic donors. The duration of the study ranged from 6-12 months. Results: regarding median fat percent for selected patients (n=42) We found that correlation between both reading was significant strong positive one (spearman correlation =0.960, p<0.001). despite the recorded liver fat percent through MRI PDFF was higher in males when compared to females, this was statistically insignificant. MRI PDFF true positive was 86.8% with false positive of 50% and true negative was 50% with false negative of 13.2%. Conclusion: Noninvasive MR hepatic PDFF technique with IDEAL sequence is a precise reliable technique for quantitative assessment of hepatic steatosis with high sensitivity, specificity and accuracy of It is recommended to be a part of preoperative liver evaluation in living donors and selectively performing liver biopsy in donor candidates diagnosed to have substantial steatosis based on MR PDFF findings

    New Flame Retardant and Antimicrobial Paints Based on Epoxy Paint Incorporated by Hexachlorocylodiphosphazane Derivatives for Protective Coating

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    Flame retardants can be incorporated into polymeric material either as additives or as reactive materials. Additive type flame retardants are widely used by means of blending them with a specific polymeric material. In this particular research, hexachlorocylodiphosphazane derivatives type (I-II) were synthesized for use as flame retardant and antimicrobial additives with epoxy varnish. These additives are physically incorporated into the epoxy varnish formula. Experimental coatings were manufactured on a laboratory scale and applied by brush on wood and steel panels. The fire retardant ability of each coating type was characterized using the limiting oxygen index (LOI) test. The mechanical properties of these flame retardants were also examined to evaluate the drawbacks of the additives. Results of the LOI indicated that coating with these compounds containing chlorine, nitrogen and phosphorus exhibit a very good retardant effect, when blended with epoxy varnish comparing with the blanket sample which not contain on the hexachlorocylodiphosphazane derivative as a additives. The hexachlorocylodiphosphazane derivative also exhibit mild results as preservative against microbiological attack. The mechanical properties of the painted dry films were investigated acordinting to ASTM

    The Role of Acid Sites in the Catalytic Performance of Tungsten Oxide during the Dehydration of Isopropyl and Methyl Alcohols

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    Abstract WO 3 catalyst was prepared by thermal decomposition of ammonium metatungstate (AMT) in a static air atmosphere for 3h at 450, 550, 650 and 750 o C. The techniques employed for characterization of the catalyst were TG, DTA, XRD, FTIR, N 2 -sorption measurements. The surface acidity of the catalyst was investigated by adsorption of pyridine and 2, 6-dimethyl pyridine. The catalytic properties of the catalyst were carried out for the dehydration of isopropyl and methyl alcohols. The results revealed that WO 3 is more active toward isopropanol dehydration than methanol dehydration. Also reflect that the reaction mechanism and the yield of propene and dimethyl ether produced from dehydration of isopropyl and methyl alcohols are controlled by the strength of acid sites

    US-Egyptian relations from the 1952 revolution to the Suez Crisis of 1956.

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    If the late 1940s and early 1950s were a period of close and friendly relations between the United States and Egypt, the late 1950s and early 1960s mark the deterioration in those relations. US-Egyptian relations from the 1952 revolution to the Suez crisis resembled to some extent a game of chess between Nasser of Egypt, and Secretary John Foster Dulles of the US. The Free Officers' rise to power in Egypt in July 1952, raised the hope of the American policy-makers in the establishing of closer and, moreover, cordial relations with Egypt. They felt that it was to their advantage to deal with the military officers who were not associated with the corrupt ancien regime of politicians. Moreover, the Free Officers did not have any political commitment nor a predetermined position in foreign policy. Therefore the Eisenhower administration, especially Secretary of State John Foster Dulles, expected that Egypt under Nasser and his military colleagues would help achieve objectives of American strategy in the area, such as the containment of Soviet penetration, and peace between the Arab states and Israel. These hopes or aspirations, however, could not be easily translated into practical policy. Dulles looked to Nasser for support of US initiatives, without appreciating problems Nasser might face. Nasser's policy was soon to clash with American strategy in the Middle East and Egypt's foreign policy would be marked to a great extent by recurrent clashes with the US, especially from 1955 onwards. Nasser saw US policy becoming reflexively pro-Israel and he felt that Washington was jeopardising his leadership of the Arab world, especially after the formation of the Baghdad Pact in February 1955. The honeymoon between the Free Officers' regime in Egypt and the US was now over. Nasser felt he had to confront the US and the Western powers on their own terms, in a more forceful and radical way. Nasser found the Soviet Union a willing partner in furthering his aims, even though he still left his options open regarding his relations with the US. As for the Eisenhower administration, the turning-point came in mid-March 1956 when Secretary of the Navy Robert Anderson returned from his mission to promote peace between Egypt and Israel empty-handed. Dulles was determined to show Nasser how tough he could be. Events then moved rapidly to the Suez crisis. The documentary and other evidence proved that Nasser's ambitions for a regional leadership of the Arab Middle East were in conflict with those of the US as a global power in the Middle East, The Eisenhower administration, for its part, had hoped and intended to contain Nasser's influence in the area and not to promote him into a major Third World leader, but in vain. The American policy turned Nasser from a local Arab leader of Egypt into the charismatic leader of the Arab world and a major political figure in the Third World. This research mainly depends on American documents which were declassified during the past two years

    Heteroaromatization with 4-phenyldiazenyl-1-naphthol. Part III: One-pot synthesis and DFT study of 4H-naphthopyran derivatives

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    A one pot three component reaction of 4-phenyldiazenyl-1-naphthol (1), p-chloro benzaldehyde (2) and malononitrile or ethyl cyanoacetate (3) in ethanol/piperidine under reflux afforded 2-amino-4-(p-chlorophenyl)-6-phenyldiazenyl-4H-naphtho[1,2-b]pyrano-3-carbonitrile (4a) and ethyl 2-amino-4-(p-chlorophenyl)-6-phenyldiazenyl-4H-naphtho[1,2-b]pyrano -3-carboxylate (4b). Structure of these compounds was established on the basis of IR, 1H NMR, 13C NMR, Mass and UV-Vis spectra. Molecular geometry of compounds 4a and b was obtained at B3LYP/6-31+G(d) level. Two tautomers and two conformers were geometrically optimized. The tautomers are separated by about 7.942 kcal/mol while rotational conformers are only separated by 0.511 kcal/mol. Molecular reactivity descriptors including global electrophilicity, hardness, softness and local condensed Fukui functions were computed and discussed. Frontier molecular orbitals (HOMO and LUMO) were also computed

    Effect of Feeding Propolis on Growth Performance of Broilers

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     An experiment was conducted to investigate the effect of propolis on broiler performance, carcass characteristics and blood parameters. The experiment was carried out with a completely randomized design of 4 treatments, supplemented with propolis at the rate of 0, 1, 2, and 3 mg/kg diet for 6 weeks. The results indicated that birds diet supplementation with propolis increased body weight (P<0.05), decreased feed intake and improved feed efficiency during the experiment. Carcass traits did not show significant differences for the treatments, with the exception of dressing percentage. The serum total protein and globulins were significantly (P<0.05) increased and the serum cholesterol and triglycerides were significantly (P<0.05) decreased in propolis supplemented broilers. No significant differences were observed in hematological parameters among the different groups. It could be concluded that dietary inclusion of propolis to poultry diets had a positive effect on growth performance and improved the immune response by elevating blood globulins level. Also, it decreases blood cholesterol and triglyceride levels. &nbsp
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