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Evaluation of Quality Parameters of White and Brown Eggs in Lebanon

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American Journal of Analytical Chemistry 2019年第10期10卷 488-503页

作者： Karine Joubrane Dima Mnayer Tayssir Hamieh Georges Barbour Rabih Talhouk elie Awad Faculty of Agricultural Engineering and Veterinary Medicine Lebanese University Beirut Lebanon Faculty of Sciences Lebanese University Beirut Lebanon Laboratory of Materials Catalysis Environment and Analytical Methods (MCEMA) Faculty of Sciences Doctoral School of Sciences and Technology (EDST) Lebanese University Beirut Lebanon Department of Biology Faculty of Art and Sciences American University of Beirut Beirut Lebanon Food Safety Lebanese Commission Beirut Lebanon.

The quality traits of fresh marketable chicken eggs collected during winter, autumn and summer periods from different local markets in Lebanon were evaluated in order to understand the reproductive fitness of the chicken and the correlation between collection dates. A total of 2000 brown and white eggs were analyzed and compared for their external quality parameters such as egg weight, length, width, size, shell thickness, specific gravity and for their internal quality traits such as Haugh unit, yolk diameter, yolk color, and yolk height. Results show that egg weight and size varied markedly and tended to be smaller during summer period. A significant difference was found between white and brown eggs in some quality traits such as egg weight, shell thickness, egg length, and yolk diameter parameters. Egg quality parameters were significantly reduced during summer season where eggs are exposed to high temperature conditions. For grading analysis, 80% of the total eggs were classified as A with a significant difference (p < 0.05) between white and brown egg and during collection dates. Overall, brown eggs graded better than white eggs in external quality cleanliness and shape. Based on our analysis, the results of this study show that Lebanese eggs are of good quality and suggest that proper egg handling and storage conditions should be applied especially at warm environmental conditions to improve egg quality during summer season.

关键词： Brown and White Eggs Egg Quality Control Quality Parameters

Databases design, development & deployment

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Databases design, development & deployment

Properties of Geopolymers Made from Fired Clay Bricks Wastes and Rice Husk Ash (RHA)-Sodium Hydroxide (NaOH) Activator

2004年

作者： Peter Rob elie Semaan.

来源：畅想之星图书光盘版（南... 评论

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Materials Sciences and Applications 2017年第7期8卷 537-552页

作者： Lynn Myllyam Beleuk à Moungam Hawa Mohamed elie Kamseu Ndigui Billong Uphie Chinje Melo Laboratory of Material Analysis MIPROMALO Yaoundé Cameroon

High cost has been pointed among factors that limit the promotion of geopolymers. To contribute to the reduction of the use of costly industrial sodium silicate in activators for geopolymers, a gel obtained with RHA and concentrated sodium hydroxide was used in the present study to develop an alkaline activator with 8 M NaOH and to produce geopolymers with crushed fired clay bricks wastes (FCBW). Characteristics of the gel were compared to that of commercial sodium silicate which was also mixed with 8 M NaOH in the ratio 1:1 to produce geopolymers. Chemical and mineralogical analyses were done on raw materials. Fourier Transformed Infrared Spectroscopy (FTIR) was done on the gel, commercial sodium silicate and products. Biaxial four point flexural strength, bulk density, water absorption and scanning electron microscopy (SEM) tests were also done on products. Results showed that RHA-NaOH alkaline activator has good potential in consolidating FCBW powder through geopolymerization process which gave products that had characteristics not far from that when the commercial sodium silicate was used. The gel obtained by mixing RHA and NaOH can contribute to the reduction of the use of costly commercial sodium silicate in the production process of geopolymers. However, appropriate filtration process is needed for the RHA-NaOH gel to reduce its impurities as undissolved entities, which will consequently contribute to improve the flexural strength, the density and the microstructure of its products which were low compared to when commercial sodium silicate was used.

关键词： Rice Husk Ash Sodium Hydroxide Fired Clay Bricks Waste Geopolymer Sustainability

Access数据库设计开发和部署第2版 4

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丛书名：国外计算机科学经典教材

2005年

作者：（美）Peter Rob （美）elie Semaan 天宏工作室译

国外计算机科学经典教材:本教材包括数据库术语、概念及设计工具，规范化数据库表的结构，实现数据库设计，查询，窗体开发，宏和宏组，数据库安全等内容。

ISBN: (纸本)7302102996

关键词：基本知识数据库管理系统

来源：畅想之星图书光盘版（南... 评论

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神经刺激治疗关节炎

科技纵览 2023年第1期 50-51页

作者： elie Dolgin 不详

莫尼克·罗布洛克(Monique Robroek)曾患有严重的关节炎,即使采用了最好的药物,她在房间行走也十分艰难。多亏皮下电子植入物,她成功停掉了所有药物,且没有痛苦地生活了近10年时间,直到最近,一种病毒性疾病令她的类风湿性关节炎(RA)再... 详细信息

莫尼克·罗布洛克(Monique Robroek)曾患有严重的关节炎,即使采用了最好的药物,她在房间行走也十分艰难。多亏皮下电子植入物,她成功停掉了所有药物,且没有痛苦地生活了近10年时间,直到最近,一种病毒性疾病令她的类风湿性关节炎(RA)再次发作。

关键词：病毒性疾病神经刺激关节炎布洛克植入物药物

Net-Shape Clay Ceramics with Glass Waste Additive

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Materials Sciences and Applications 2014年第8期5卷 592-602页

作者： Chantale Njiomou Djangang elie Kamseu Antoine Elimbi Gisèle Laure Lecomte Philippe Blanchart Department of Inorganic Chemistry University of Yaounde I Yaounde Cameroon Department of Engineering “Enzo Ferrari” University of Modena and Reggio Emilia Modena Italy LAM Local Materials Promotion Authority/MIPROMALO Yaounde Cameroon GEMH ENSCI Limoges France

In this paper, a glass powder from waste containers was mixed (10 - 40 wt.%) with a kaolinitic sandy clay from Cameroon to elaborate net-shape ceramics, fired at 1100°C. The sintering behavior was from dilatometry and thermo gravimetric analyses together with the characterization of porosity and flexural strength. The increase of glass to kaolinite ratio reduces the sintering shrinkage leading to a none-densification sintering when 40 wt.% of glass is added in the mixture. The volume variation during the whole firing process is from the individual volume variations during the quartz transformation, the structural reorganization of kaolinite and during sintering. Quartz size and relative quantity have a significant role on the first processes since it leads to either cohesive or un-cohesive behavior. But the glass quantity strongly controls the second and the third thermal processes because glass additions change the recrystallization processes, leading to the formation of dense clay-glass agglomerates distributed within the three dimensional quartz network.

关键词： Clay Waste Glass Powder Sintering Composite Cameroon

Plasma synthesis of various polymorphs of tungsten trioxide nanoparticles using gliding electric discharge in humid air:characterization and photocatalytic properties

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Plasma Science and Technology 2023年第12期25卷 72-82页

作者： Romaric L SEUTCHA Georges KAMGANG-YOUBI elie ACAYANKA Valeria VERMILE François DEVRED Eric M GAIGNEAUX Samuel LAMINSI Inorganic Chemistry Department Faculty of SciencesUniversity of Yaounde INgoa-Ekelle 812YaoundéCameroon Institute of Condensed Matter and Nanosciences(IMCN) Molecular ChemistryMaterials and CatalysisUniversitéCatholique de LouvainPlace Louis Pasteur 11348 Louvain-la-NeuveBelgium

A gliding electric arc(glidarc)discharge generates a low-temperature plasma at atmospheric *** the discharge occurs in humid air as the feed gas,the chemistry of a glidarc plasma consists of in situ formation of HO°and NO°as the primary chemical *** trioxide(WO_(3))nanoparticles were successfully prepared by exposure of a liquid precursor to glidarc *** WO_(3)samples were calcined at three different temperatures(300℃,500℃and 800℃),resulting in different pure polymorphs:γ-WO_(3)(at 300℃),β-WO_(3)(at 500℃)andα-WO_(3)(at 800℃)according to x-ray diffraction *** identification of WO_(3)compounds was also confirmed by attenuated total reflection Fourier transform infrared spectroscopy *** in the calcination temperature of WO_(3)induced a decrease in its specific surface area according to Brunauer–Emmett–Teller nitrogen physisorption *** UV-visible results showed that the absorption bands of plasma-WO_(3)samples were more intense than those of WO_(3)samples obtained by a precipitation route,a classical method used for ***,this parameter can improve the photocatalytic properties of WO_(3)under visible *** photodegradation(in sunlight conditions)of gentian violet,chosen as a model pollutant,confirmed the photocatalytic properties of plasma-WO_(3)*** novel synthesis method has great potential to improve the efficiency of advanced tungsten trioxide-based functional material preparation,as well as in pollution-reducing and energy-saving tungsten extractive metallurgy.

关键词： plasma glidarc tungsten trioxide plasma-synthesis nanoparticles photocatalyst

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戒掉大农业的“肥料瘾”

科技纵览 2018年第6期 66-69页

作者： elie Dolgin

大农业热衷于使用氮肥，这对全球气候来说是一个大问题，不过或许可以使用微型方案来解决：通过重新设计，利用微生物固定大气中的氮，并将其变成玉米、小麦及其他粮食作物能使用的天然型肥料。

关键词：大农业肥料微生物固定全球气候粮食作物天然型氮肥玉米

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邦雷的圣伯纳黛特教堂

建筑创作 2014年第3期 82-91页

作者：李天 elie Rosenberg

邦雷的圣伯纳黛特教堂以错位的碉堡为造型意象，自1966年12月举行祝圣仪式以来，其非凡的感染力从未消减。圣伯纳黛特教堂看似有意相互排斥、却又浑然一体的造型激发了“电容效应”。时刻警示世人那一段充斥着战争与核危机的年代。圣伯... 详细信息

邦雷的圣伯纳黛特教堂以错位的碉堡为造型意象，自1966年12月举行祝圣仪式以来，其非凡的感染力从未消减。圣伯纳黛特教堂看似有意相互排斥、却又浑然一体的造型激发了“电容效应”。时刻警示世人那一段充斥着战争与核危机的年代。圣伯纳黛特教堂首先是个庇护所，设计了两处可用于军事庇护的空间。但同时圣伯纳黛特教堂也通过对“断裂”的实际应用给了现代性重重一击。

关键词：圣伯纳教堂相互排斥电容效应感染力核危机庇护所造型