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Impact of Pollution on Weeds Phytosociology

Research Abstract
تمت دراسة الغطاء النباتي المرتبط ببعض الأراضي المنزرعة بمحافظة أسيوط خلال العامين 2015 و 2016 م، وقد تم تسجيل 82 نوعاً نباتياً تنتمي إلى 25 عائلة وأوضحت الدراسة سيادة النباتات الحولية عامة والتى شكلت 65% من مجموع النباتات. وبإستخدام التحليل العنقودي كطريقة تصنيف نتج مجموعتان متميزتان من النباتات فقد "B" على المناطق الملوثة، أما وقفات المجموعة "A" وقد اقتصرت وقفات المجموعة "B" و "A" هما اقتصرت على المناطق غير الملوثة. أيضاً أوضحت الدراسة تقيد خمسة عشر نوعاً نباتياً على التواجد فى وتواجد ستة )B وواحد وثلاثون نوعاً في المناطق غير الملوثة )المجموعة )A المناطق الملوثة فقط )المجموعة وثلاثون نوعاً في كلا المنطقتين. تم استخدام نسبة تواجد كل نوع من النباتات داخل المجموعتين كدلالة ليوضح نجاح النوع وتفضيله لموئل ما. هذا وقد بينت الدراسة أنه يمكن تحقيق استخدام جهد تلك الأنواع الممثلة في كلا المنطقتين ولكن بنسبة تواجد عالية في المنطقة الملوثة )الأنواع ذات القدرة الإحتمالية لعديد من العوامل البيئية(، بالإضافة إلى الأنواع المحصور تواجدها على هذه المنطقة فقط في المعالجة النباتية لمثل هذه المناطق الملوثة. كان نبات الحُريق أكثر الأنواع انتشاراً إذ تم تسجيله فى كل الوقفات الملوثة فقط مما يعكس قدرته على تحمل مثل DCA هذه المستويات من التلوث الخطير، ولذلك يمكن اعتباره نوعاً من النباتات الدالة على التلوث. أظهر تطبيق بالمعادن الثقيلة وارتباط المجموعة "A" على البيانات التى تم جمعها ارتباط مجموعة الغطاء النباتي CCA و بالعناصر المغذية الأساسية. وقد خلُص هذا البحث إلى أن الدراسات الأولية على المجتمعات النباتية فى "B" مثل هذه المناطق يمكن أن توفر معلومات مفيدة عن الأنواع المؤثرة التي يمكن استخدامها في المعالجة النباتية.
Research Authors
Taha Ramadan, Ahmed Amro and Mahmoud S. Abd-Almoneim
Research Journal
Egyptian Journal of botany
Research Pages
423-436
Research Publisher
NULL
Research Rank
1
Research Vol
Vol. 58, No. 3
Research Website
https://ejbo.journals.ekb.eg/article_7901.html
Research Year
2018

MHD mixed convection in an inclined cavity containing adiabatic obsticale and filled with Cu-water nanofluid in the presence of the heat generation and partial slip

Research Abstract
MHD mixed convection in an inclined cavity containing adiabatic obsticale and filled with Cu-water nanofluid in the presence of the heat generation and partial slip
Research Authors
SSameh E. Ahmed, M.A.Mansour, Ahmed Kadhim Hussein , B. Malikarjuna, Mohamed A.Almeshaal,
Research Department
Research Journal
Journal of thermal Analysis and Calorimetry
Research Pages
1443-1460
Research Publisher
NULL
Research Rank
1
Research Vol
138
Research Website
NULL
Research Year
2019

Enhancement of the Antibacterial Potential of Biosynthesized silver Nanoparticles Using Hydrophilic Polymers

Research Abstract
NULL
Research Authors
23- Naeima M H Yousef and Hanan A Temerk
Research Journal
BMRJ.
Research Pages
1-9.
Research Publisher
NULL
Research Rank
1
Research Vol
19 (3)
Research Website
NULL
Research Year
2017

Impacts of inoculation with Rhizobium leguminosarum and arbuscular mycorhizae fungi and phosphate on faba bean (Vicia faba L.) grown in salt stressed soil.

Research Abstract
NULL
Research Authors
19- Yousef, Naeima M.H. and Hussein, Nemmat A
Research Journal
BJB
Research Pages
599-605
Research Publisher
NULL
Research Rank
1
Research Vol
46(2)
Research Website
NULL
Research Year
2017

Enhancement of antimicrobial effect of some spices extract by using biosynthesized silver nanoparticles

Research Abstract
NULL
Research Authors

20- Abd El-Aziz, Doaa M and Yousef, Naeima M H
Research Journal
, Int. Food Research Journal, 25 (2); 589-596.
Research Pages
589-596.
Research Publisher
NULL
Research Rank
1
Research Vol
25 (2)
Research Website
NULL
Research Year
2018

Overexpression of recombinant membrane associated protein (MapA) of Synechococcus elongatus PCC 7942 in Escherichia coli.

Research Abstract
NULL
Research Authors

13- Naeima M. H. Yousef
Research Journal
Egypt. J. Exp. Biol. (Bot.),
Research Pages
50 –57.
Research Publisher
NULL
Research Rank
2
Research Vol
11(1):
Research Website
NULL
Research Year
2015

Evaluation of the antibacterial potential of selected medicinal plant extracts against some bacterial strains.

Research Abstract
NULL
Research Authors
9- Naeima M.H. Yousef
Research Journal
Assiut University Journal of Botany.
Research Pages
NULL
Research Publisher
NULL
Research Rank
2
Research Vol
NULL
Research Website
NULL
Research Year
2015

Isolation and molecular identification of polyaromatic hydrocarbons – utilizing bacteria from crude petroleum oil samples.

Research Abstract
NULL
Research Authors
Eman A. H. Mohamed, Naeima M. H. Yousef, Azza G. Farag
Research Journal
African J. of microbiol. Research,

Research Pages
7479-7484.
Research Publisher
NULL
Research Rank
1
Research Vol
6 (49)
Research Website
NULL
Research Year
2012

) Comparative analysis of idiA and isiA transcription under iron starvation and oxidative stress in Synechococcus elongatus PCC 7942 wild-type and selected mutants

Research Abstract
NULL
Research Authors
2- Naeima M. H. Yousef, Pistorius, E.K. & Michel, K.-P.
Research Journal
Arch. Microbiol
Research Pages
471-483
Research Publisher
NULL
Research Rank
1
Research Vol
180
Research Website
NULL
Research Year
2003

: In vitro and in vivo evaluation of biologically synthesized silver
nanoparticles for topical applications: effect of surface coating and loading into hydrogels

Research Abstract
Abstract In the present study, silver nanoparticles (AgNPs) were synthesized via biological reduction of silver nitrate using extract of the fungus Fusariumverticillioides(green chemistry principle). The synthesized nanoparticles were spherical and homogenous in size. AgNPs were coated with polyethylene glycol (PEG) 6000, sodium dodecyl sulfate (SDS), and β-cyclodextrin (β-CD). The averaged diameters of AgNPs were 19.2±3.6, 13±4, 14±4.4, and 15.7±4.8 nm, for PEG-, SDS-, and β-CD-coated and uncoated AgNPs, respectively. PEG-coated AgNPs showed greater stability as indicated by a decreased sedimentation rate of particles in their water dis¬persions. The antibacterial activities of different AgNPs dispersions were investigated against Gram-positive bacteria (methicillin-sensitive and methicillin-resistant Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli) by determination of the minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs). MIC and MBC values were in the range of 0.93–7.5 and 3.75–15 μg/mL, respectively, which were superior to the reported values in literature. AgNPs-loaded hydrogels were prepared from the coated-AgNPs dispersions using several gelling agents (sodium carboxymethyl cellulose [Na CMC], sodium alginate, hydroxypropylmethyl cellulose, Pluronic F-127, and chitosan). The prepared formula¬tions were evaluated for their viscosity, spreadability, in vitro drug release, and antibacterial activity, and the combined effect of the type of surface coating and the polymers utilized to form the gel was studied. The in vivo wound-healing activity and antibacterial efficacy of Na CMC hydrogel loaded with PEG-coated AgNPs in comparison to the commercially available silver sulfadiazine cream (Dermazin®) were evaluated. Superior antibacterial activity and wound-healing capability, with normal skin appearance and hair growth, were demonstrated for the hydrogel formulations, as compared to the silver sulfadiazine cream. Histological examination of the treated skin was performed using light microscopy, whereas the location of AgNPs in the skin epidermal layers was visualized using transmission electron microscopy.
Research Authors
Aml Mekkawy, Mohamed El-Mokhtar, Nivien Nafady, Naeima Yousef, Mostafa Hamad, Sohair El-Shanawany, Ehsan Ibrahim, Mahmoud Elsabahy
Research Journal
International Journal of Nanomedicine
Research Pages
1-19
Research Publisher
International Journal of Nanomedicine
Research Rank
1
Research Vol
- Volume 12, Pages 759-777
Research Website
NULL
Research Year
2017
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