نتایج جستجو برای: th iv ion removal

تعداد نتایج: 556680  

2018
Asaf Duraković

The purpose o f th i s ar t i c l e i s to in troduce the medica l communi ty to the a l ternat ives o f g loba l nuc lear ca tas trophe and to the u l t imate benef i t s to mankind o f the peacefu l use o f nuc lear energy . The apparent end o f the co ld war d id not br ing any s ign i f i cant changes in the deve lop ­ ment and improvement o f the nuc lear arsena l e i ther in the wes tern ...

M. Bhatnagar

The carrier facilitated transport of lithium picrate was studied using a series of non-cyclic polyethers containing different end groups and chain lengths through Bulk Liquid Membrane (BLM) and Supported Liquid Membrane (SLM) systems. The various membrane supports used are viz. PTFE, cellulose nitrate, and dialysis membrane and onion membrane. The amount of Li+ transported depends upon the stru...

1999
Richard J. Murphy John J. Lenhart Bruce D. Honeyman

In most aquatic systems, natural organic acids constitute an important pool of trace-metal binding ligands. The effect of natural organic matter (NOM) on metal ion sorption to mineral surfaces is a complex function of the environment in which the mineral and ions reside, as well as the source, molecular weight distribution and composition of the NOM. In spite of the well-acknowledged importance...

Journal: :Dalton transactions 2015
Zoë E Button Jessica A Higgins Markéta Suvova F Geoffrey N Cloke S Mark Roe

The Th(iv) mixed-sandwich halide complexes Th(COT(TIPS2))Cp*X (where COT(TIPS2) = 1,4-{Si(i)Pr(3)}(2)C(8)H(6), X = Cl, I) have been synthesised, and structurally characterised. When Th(COT(TIPS2))Cp*I is reduced in situ in the presence of CO(2), a mixture of dimeric carboxylate and oxalate complexes {Th(COT(TIPS2))Cp*}(2)(μ-κ(1):κ(2)-CO(3)) and {Th(COT(TIPS2))Cp*}(2)(μ-κ(2):κ(2)-C(2)O(4)) are f...

2014
Katayoon Kalantari Mansor B. Ahmad Hamid Reza Fard Masoumi Kamyar Shameli Mahiran Basri Roshanak Khandanlou

Fe3O4/talc nanocomposite was used for removal of Cu(II), Ni(II), and Pb(II) ions from aqueous solutions. Experiments were designed by response surface methodology (RSM) and a quadratic model was used to predict the variables. The adsorption parameters such as adsorbent dosage, removal time, and initial ion concentration were used as the independent variables and their effects on heavy metal ion...

2006
Anna Ursyn Ebad Banissi

This review tells about the International Conference on Information Visualization that is held annually in London, England. Themes selected from the Conference Proceedings are focused on theoretical concepts, semantic approach to visualization, digital art, and involve 2D, 3D, interactive and virtual reality tools and applications. The focal point of the iV 05 Conference was the progress in inf...

2005

K oyna Earthquake of December 11, I967: Report of the Expert Committee on Electrical and Mechanical Equipment. UNESCO, No. 1489/BMS.RD/SCE, Paris , September, 1969, 52 pp. Hydroelectr ic power generators are common in seismic regions th roughou t the world and the i r abi l i ty to w i th s t and ea r thquakes is i m p o r t a n t to public welfare. There is very l i t t le informat ion in the ...

1998
Nancy Martin

It is general ly accepted that problem solving systems require a weal th of domain specific knowledge for effect ive performance in complex domains. This report takes the view that al l domain specific knowledge should be expresaed in a knowledge base. Wi th this in mind, the ideas and techniques from problem solving and knowledge base research are reviewed and outstanding problems are ident i ...

In present study, molecular dynamics simulation of Cadmium (II), Lead (II) and Copper (II) removal from aqueous electrolyte solutions using the ion-exchange process with the zeolite particles was done. The results showed that, most of the particles had the highest affinity of ion exchanging with Lead (II) and the lowest affinity with Copper (II). The calculated mean ion-exchange ratios showed t...

Journal: :محیط شناسی 0
انسیه فدائی کارشناس ارشد محیط زیست، دانشکده منابع طبیعی، گروه محیط زیست دانشگاه بیرجند علیرضا پورخباز استادیار، دانشکده منابع طبیعی، گروه محیط زیست،دانشگاه بیرجند غلامرضا نبی بیدهندی استاد،دانشکده محیط زیست،گروه مهندسی محیط زیست، دانشگاه تهران محمد جواد امیری استادیار، دانشکده محیط زیست، گروه مدیریت و برنامه ریزی محیط زیست، دانشگاه تهران احمد جمشیدی دکتری مهندسی آب، دانشکده عمران، گروه مهندسی آب و محیط زیست، دانشگاه علم و صنعت ایران هادی والهی کارشناس ارشد مهندسی hse، پردیس بین المللی ارس، دانشگاه تهران

chromium (cr) is one of the elements presents in crust of the earth. due to its toxicity, chromium is considered as water contaminant that may disturb metabolic activity. in the present study, adsorption of dissolved chromium (vi) onto elaeagnus angustifolia fruit charcoal, jujube fruit charcoal and the standard granular activated carbon (gac) has been investigated and compared. the effect of c...

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