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RISS 인기검색어
- 검색키워드
- 저자 : Ibrahim Omer Mohamed (검색결과 3 건)
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Estimation method for determining surface film conductance during cooling of fish packages
Ibrahim Omer Mohamed,Kassim Ali Abass 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.6
This paper presents an alternative method for determining the surface film conductance of an infinite fish slab subjected to the cooling process. Many methods have been published, but their solutions have inherent appreciable inaccuracy and limitations. The present authors used the temperature histories of five locations within a slab sample of fish, obtained by the experimental investigation part of this work, along with the inverse heat conduction problem (IHCP) technique to develop a correlation for variable surface film conductance. When the above correlation was used for temperature predictions, the predicted and experimentally measured temperature distribution profiles were compared numerically. Better agreement than that implemented by other investigators was achieved. This revealed the accuracy and superiority of the present method, and the limitations of other methods are overcome in this method.
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Ahmed Raza,Ibrahim M. Al-Shahwan,Omer A. Abdalla,Mohammed A. AL-Saleh,Mahmoud A. Amer 한국식물병리학회 2017 Plant Pathology Journal Vol.33 No.1
A survey was conducted to determine the status ofLucerne transient streak virus (LTSV) in three highyieldingalfalfa regions in central Saudi Arabia (Riyadh,Qassim, and Hail) during 2014. Three hundredand eight symptomatic alfalfa, and seven Sonchus oleraceussamples were collected. DAS-ELISA indicatedthat 59 of these samples were positive to LTSV. Twoisolates of LTSV from each region were selected formolecular studies. RT-PCR confirmed the presence ofLTSV in the selected samples using a specific primerpair. Percentage identity and homology tree comparisonsrevealed that all Saudi isolates were more closelyrelated to each other but also closely related to the Canadianisolate-JQ782213 (97.1–97.6%) and the NewZealand isolate-U31286 (95.8–97.1%). ComparingSaudi isolates of LTSV with ten other sobemovirusesbased on the coat protein gene sequences confirmedthe distant relationship between them. Eleven out offourteen plant species used in host range study werepositive to LTSV. This is the first time to documentthat Trifolium alexandrinum, Nicotiana occidentalis,Chenopodium glaucum, and Lathyrus sativus are newhost plant species for LTSV and that N. occidentalisbeing a good propagative host for it.
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Raza, Ahmed,Al-Shahwan, Ibrahim M.,Abdalla, Omer A.,Al-Saleh, Mohammed A.,Amer, Mahmoud A. The Korean Society of Plant Pathology 2017 Plant Pathology Journal Vol.33 No.1
A survey was conducted to determine the status of Lucerne transient streak virus (LTSV) in three high-yielding alfalfa regions in central Saudi Arabia (Riyadh, Qassim, and Hail) during 2014. Three hundred and eight symptomatic alfalfa, and seven Sonchus oleraceus samples were collected. DAS-ELISA indicated that 59 of these samples were positive to LTSV. Two isolates of LTSV from each region were selected for molecular studies. RT-PCR confirmed the presence of LTSV in the selected samples using a specific primer pair. Percentage identity and homology tree comparisons revealed that all Saudi isolates were more closely related to each other but also closely related to the Canadian isolate-JQ782213 (97.1-97.6%) and the New Zealand isolate-U31286 (95.8-97.1%). Comparing Saudi isolates of LTSV with ten other sobemoviruses based on the coat protein gene sequences confirmed the distant relationship between them. Eleven out of fourteen plant species used in host range study were positive to LTSV. This is the first time to document that Trifolium alexandrinum, Nicotiana occidentalis, Chenopodium glaucum, and Lathyrus sativus are new host plant species for LTSV and that N. occidentalis being a good propagative host for it.
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