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F. Barceló Oliver P. Kelly S. J. Sharpe A. Ayoub J. C. Patterson-Kane P. J. Pollock 《Equine Veterinary Education》2019,31(9):e53-e57
A 15-year-old Cob mare was presented for investigation of a mandibular mass. Radiography identified an oval-shaped mass occupying the intramandibular space, with a heterogeneous osseous opacity throughout the left hemimandible. Histopathology combined with immunohistochemistry was consistent with a diagnosis of sclerosing odontogenic carcinoma, which to date has only been described, rarely, in human patients. The mass was removed using a mandibular-sparing surgical technique allowing preservation of the dental arcade. Follow-up 5 years after surgery confirmed no signs of regrowth. This case report describes the successful treatment of a previously unreported mandibular neoplasm in the horse. 相似文献
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Shonouda M Osman S Salama O Ayoub A 《Pakistan journal of biological sciences: PJBS》2008,11(4):546-552
The leaf extract and its fractions of Peganum harmala L. have shown pronounced mortal effect, decreased percent pupation and adult emergence of the cotton leaf worm, Spodoptera littoralis Boisd. The third instar larvae fed for two days on treated leaves were more susceptible to plant extract and its ethyl acetate and chloroform fractions. The active lowest concentration (5%) of the leaf fractions of P. harmala showed significant effect on the percentage of emerged adult parasitoids, Microplitis rufiventris Kok. GC/MS analysis showed the major constituent in ethyl acetate fraction was (23S) ethylcholest-5-en-3 beta-ol (28.04%) while those of chloroform fraction were hydroxyfuranocoumarin (Bergaptol) (15.68%), piperidinone (12.08%), thymol (11.82%), phosphoric acid, tributyl ester (9.80%) and trimethyl-nonenol (9.66%). The medicinal plant P. harmala could be carefully applied in integrated pest management due to its strong effect on cotton leaf worm pest. 相似文献
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Nawwar M Hussein S Ayoub N Hashim A El-Sharawy R Lindequist U Harms M Wende K 《Fitoterapia》2011,82(8):1265-1271
Assessment of the UV protecting potential of an aqueous methanol leaf extract of Harpephyllum caffrum proved that it possesses a distinct radical scavenging effect and inhibits the production of the proinflammatory cytokine IL-6 by human keratinocytes (HaCaT cells) following UV radiation. Phytochemical investigation of this extract led to isolation and structural determination of the hitherto unknown phenolics, kaempferol 3-O-(2″-sulphatogalactopyranoside), its quercetin analogue and 3-methoxyellagic acid 4-O-galactopyranoside in addition to 18 known phenolic compounds. The structures were determined by spectroscopic and conventional methods of analysis. Flavonoid sulphatoglycosides which have been rarely found in nature were major phenolic constituents of this plant, and this is the first report of the isolation of any of them from Anacardiaceae. The extract was found to diminish UV phototoxic reaction of keratinocytes. However, the isolated kaempferol sulphatogalactopyranoside did not interact with UVB triggered IL-6 production of HaCaT keratinocytes. 相似文献
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The effect of step-feed on biological ammonia nitrogen (NH3-N) removal in a rotating biological contactor (RBC) system consisting of two three-stage units (one control and one step-feed) treating synthetic wastewater was examined. The performance of the step-feedRBC was evaluated in comparison to a regularly fed RBC in terms of NH3-N removals and stage-dissolved oxygen (DO) conditions over a range of hydraulic and organic loading rates (HLR = 0.032 to 0.125 m3 m-2. d-1 and OLR = 11.03 to 111.6 g COD m-2. d-1). The results indicate that the step-feed unit showed better removal efficiency (%) at high HLR and ORL than the regularly fed control unit. Increasing the HLR and the OLR resulted in a decrease in DO in all the stages of the two units. However, DO values in the step-feed system were higher than those recorded for the control system. In addition, O2 limiting conditions (DO ≤ 2 mg l-1) and heavy growth of Beggiatoa were detected in stage 1 of the control unit at high loading rates. 相似文献
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George M. Ayoub 《Water, air, and soil pollution》1973,2(4):409-426
Experiments were conducted to study the behavior of axi-symmetric turbulent buoyant jets injected horizontally in a cross flowing current. Experimental work was simulated by injecting a fluid emanating from a. round nozzle into a fluid of lighter density flowing in a wide channel at approximately uniform flow. A salt tracer technique was used for jet dispersion studies. In this study, material concentration profiles were measured across various sections along jets of different parametric values. From these profiles, concentration distribution curves as well as maximum concentration and dilution values and their variation with distance along the jet were determined. Half jet radius values were calculated to study the expansion of the jet. Jet boundaries and trajectories were studied photographically and compared with measured values. The effect of the ambient current on the overall shape of the jet was established by the study of the measured complete concentration section across the jet. 相似文献
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A. T. Ayoub 《The Journal of Horticultural Science and Biotechnology》2013,88(1):163-168
Lentil plants of the Beladi type were grown at various NaCl levels under laboratory, greenhouse and field conditions with the object of determining the salt tolerance limits. Salt tolerance was much higher during germination than during subsequent growth. A 50% reduction in germination occurred at about 20.0 mmhos cm-1. Seed yield was reduced to 50% at soil salinity of about 3.9 mmhos cm-1. Plant survival, pod formation and seed quality were adversely affected by higher salt levels. Total nitrogen in the kernel decreased with rising soil NaCl levels while that of the husk increased. 相似文献