نتایج جستجو برای: sargassum boveanum

تعداد نتایج: 1683  

2016
John J. Milledge Patricia J. Harvey

In recent years there have been massive inundations of pelagic Sargassum, known as golden tides, on the beaches of the Caribbean, Gulf of Mexico, and West Africa, causing considerable damage to the local economy and environment. Commercial exploration of this biomass for food, fuel, and pharmaceutical products could fund clean-up and offset the economic impact of these golden tides. This paper ...

2017
Nicole Schwartz Sven Rohde Sergey Dobretsov Shimabukuro Hiromori Peter J. Schupp

Competition and fouling defence are important traits that may facilitate invasions by non-indigenous species. The 'novel weapons hypothesis' (NWH) predicts that the invasive success of exotic species is closely linked to the possession of chemical defence compounds that the recipient community in the new range is not adapted to. In order to assess whether chemical defence traits contribute to i...

2017
Nicole Schwartz Sergey Dobretsov Sven Rohde Peter J. Schupp

The invasiveness of algal species can be facilitated by chemo-ecological traits that allow the establishment of invasive species in a highly competitive environment. Anti-bacterial, anti-quorum sensing, anti-diatom and anti-larval properties of the invasive brown macroalga Sargassum muticum and three native Sargassum species from Oman waters were compared in laboratory and field experiments to ...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2007
F P P Leite M o Tanaka R S Gebara

The presence of diverse biological substrates adds complexity to coastal landscapes and increases the number of ecological niches that can be used by the mobile epifauna. Studies on the influence of structural complexity have focused mainly on algal host species, but there is little information about the influence of intraspecific structural variation on the associated mobile epifauna. In this ...

Journal: :iranian journal of chemistry and chemical engineering 0
maryam ghaemi iranian national institute of oceanography and atmospheric sciences, tehran, iran sara gholamipour iranian national institute of oceanography and atmospheric sciences, tehran, i.r. iran

a simple, fast and one-pot synthesis procedure based on the bioreduction ability of an algal extract solution has been developed to produce silver nanoparticles (agnps). we focus especially on the influencing factors of agnps formation. the effects of various factors like ph, temperature, the concentration of metal ions and alga, the volume ratio of silver nitrate solution to alga extract, reac...

2016
Fatemeh Faraji Ghasemi Sina Dobaradaran Alireza Raeisi Abdolhamid Esmaili Mohammad Javad Mohammadi Mozhgan Keshtkar Sara Ghaderi Nasab Farshid Soleimani

In this article, we used Sargassum hystrix algae as biosorbent for removal of Fe (II) from aqueous solutions that was collected along the Persian Gulf coastline, Bushehr, Iran. The concentration level of remaining Fe (II) in the samples was measured by using flame atomic absorption spectrometry (FAAS, Varian AA240, Australia). The isotherms, kinetics and modeling data of Fe (II) biosorption ont...

Journal: :Molecules 2012
Rui-Li Zhang Wen-Da Luo Tie-Nan Bi Shen-Kang Zhou

The effect of Sargassum pallidum (brown seaweed) aqueous extract on the immunity function and antioxidant activities in was studied gastric cancer rats. Treatment with Sargassum pallidum aqueous extract at oral doses 400, 600 or 800 mg/kg body weight was found to provide a dose-dependent protection against N-methyl-N′-nitro-Nnitrosoguanidine (MNNG)-induced immunity damage and oxidative injury b...

2015

Objective: The present study aims to evaluate the anti-inflammatory activity of crude sulphated polysaccharide from marine brown algae sargassum ilicifolium Methods: The present study involves the investigation of crude sulphated polysaccharide from marine brown algae sargassum ilicifolium for antiinflammatory activity by TPA [12OTechanoyl 13 – Myristate] induced inflammation in Polymorphonucle...

Journal: :Bioinorganic Chemistry and Applications 2008
Nobuo Sakamoto Naoki Kano Hiroshi Imaizumi

In order to investigate the behavior of rare earth elements (REEs) and uranium (U) in marine organism, the concentrations of REEs and U in some brown algae samples taken on the coast of Niigata Prefecture were determined. In addition, laboratory model experiment to uptake these elements using living and dried algae (Undaria pinnatifida and Sargassum hemiphyllum) was also carried out to survey t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1392

جنس sargassum c. agardh (سارگاسه)، یکی از مهمترین جنس ها در بین 41 جنس راسته فوکالس (فئوفیسه، هتروکنتوفایت ها) است. این جنس پراکنش وسیعی در مناطق گرمسیری و نیمه گرمسیری جهان داشته و جز اصلی فلور دریایی محسوب می گردد. به علت تغییرات فنوتیپی بالا، تاکسونومی این جنس در بین جلبک های قهوه ای بسیار مشکل است. در این تحقیق، نمونه هایی از سواحل جنوبی کشور جمع آوری گردید، مطالعات ریخت شناسی و تشریحی بر ا...

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