Search Results - "Niknam, K."

Flame atomic absorption spectrometric determination of copper, zinc and manganese after solid-phase extraction using 2,6-dichlorophenyl-3,3-bis(indolyl)methane loaded on Amberlite XAD-16 by Ghaedi, M., Niknam, K., Taheri, K., Hossainian, H., Soylak, M.

“…A simple and selective method for the determination of Cu2+, Zn2+ and Mn2+ ions in real samples by FAAS after solid-phase extraction was developed. The method…”
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Cloud Point Extraction of Copper, Zinc, Iron and Nickel in Biological and Environmental Samples by Flame Atomic Absorption Spectrometry by Ghaedi, M., Shokrollahi, A., Niknam, K., Soylak, M.

“…Cloud point methodology was successfully employed for preconcentration of trace copper, zinc, iron, and nickel prior to their determination by flame atomic…”
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The Solid Phase Extraction of Some Metal Ions Using Palladium Nanoparticles Attached to Silica Gel Chemically Bonded by Silica-Bonded N-Propylmorpholine as New Sorbent prior to Their Determination by Flame Atomic Absorption Spectroscopy by Ghaedi, M., Rezakhani, M., Khodadoust, S., Niknam, K., Soylak, M.

“…In this research at first palladium nanoparticle attached to a new chemically bonded silica gel has been synthesized and has been characterized with different…”
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Phenol-Containing Macrocyclic Diamides as New Catalysts in the Highly Regioselective Conversion of Epoxides to β-Hydroxy Thiocyanates by Sharghi, Hashem, Nasseri, Mohammad Ali, Niknam, Khodabakhsh

“…The regioselective ring-opening reactions of some epoxides with ammonium thiocyanate in the presence of a series of new phenol-containing macrocyclic diamides…”
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Preconcentration and Determination of Zinc and Lead Ions by a Combination of Cloud Point Extraction and Flame Atomic Absorption Spectrometry by Ghaedi, M., Tavallali, H., Shokrollahi, A., Zahedi, M., Niknam, K., Soylak, M.

“…The phase‐separation phenomenon of non‐ionic surfactants occurring in aqueous solution was used for the extraction of lead(II) and zinc(II). After complexation…”
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Cloud Point Extraction and Flame Atomic Absorption Spectrometric Determination of Lead, Cadmium and Palladium in Some Food and Biological Samples by M. Soylak, M. Ghaedi, K. Niknam

“…The proposed method is based on the complexation of the Pb2+, Cd2+ and Pd2+ ions with 3-(1-(1-H-Indol-3-Yl)-3-phenylallyl)-1H-indole (IPAI) at pH 8.0 in the…”
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PRE-CONCENTRATION AND DETERMINATION OF HEAVY METALS ON MODIFIED ACTIVATED CARBON IN REAL SAMPLES by Ahmadi, F., Niknam, K., Khanmohammadi, A., Adibmehr, Z.

“…A sensitive and simple method for the simultaneous pre-concentration of nutritionally important minerals in real samples has been reported. The method is based…”
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Incidental CT findings from myocardial perfusion PET/CTs by Berenji, G, Puente, C A, Niknam, K H, Packard, R

“…Abstract Introduction New state-of-art hybrid imaging systems provide high quality CT images along with myocardial perfusion imaging (MPI), which introduces…”
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Cloud point extraction and flame atomic absorption spectrometric determination of cadmium(II), lead(II), palladium(II) and silver(I) in environmental samples by Ghaedi, Mehrorang, Shokrollahi, Ardeshir, Niknam, Khodabakhsh, Niknam, Ebrahim, Najibi, Asma, Soylak, Mustafa

“…The phase-separation phenomenon of non-ionic surfactants occurring in aqueous solution was used for the extraction of cadmium(II), lead(II), palladium(II) and…”
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Synthesis of 2-substituted benzimidazoles and bis-benzimidazoles by microwave in the presence of alumina-methanesulfonic acid by Niknam, K., Fatehi-Raviz, A.

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213 A Brief Cadaver Training Session Is Feasible for Training Novice Users on Transesophageal Echocardiography Transducer Insertion by Horton, R., Niknam, K., Lobo, V., Pade, K.H., Jones, D., Anderson, K.L.

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93 Patient Safety and Quality Outcomes for Emergency Department Patients After Implementation of a Hospital Policy on Alternative Care Area Inpatient Beds, Which Include Hallway Beds by Lee, M.O., Arthofer, R., Callagy, P., Niknam, K., Kohn, M.A., Shen, S.

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Silica-Bonded N-Propylpiperazine Sodium n-Propionate as Recyclable Basic Catalyst for Synthesis of 3,4-Dihydropyrano[c]chromene Derivatives and Biscoumarins by NIKNAM, Khodabakhsh, JAMALI, Abbas

“…A simple and efficient procedure for the preparation of silica-bonded N-propylpiperazine sodium n-propionate（SBPPSP） by the hydrolysis of silica-bonded…”
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Using acidic ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate in selective nitration of phenols under mild conditions by Tajik, H., Niknam, K., Parsa, F.

“…Selective nitration of phenols with sodium nitrate was carried out in the presence of acidic ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate at room…”
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Preparation of indolylmethanes catalyzed by metal hydrogen sulfates by Niknam, K., Zolfigol, M. A., Sadabadi, T., Nejati, A.

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Flame atomic absorption spectrometric determination of trace amounts of heavy metal ions after solid phase extraction using modified sodium dodecyl sulfate coated on alumina by Ghaedi, Mehrorang, Niknam, Khodabakhsh, Shokrollahi, Ardeshir, Niknam, Ebrahim, Rajabi, Hamid Reza, Soylak, Mustafa

“…A sensitive and selective solid phase extraction procedure for the determination of traces of Cu(II), Zn(II), Pb(II) and Fe(III) has been developed. An…”
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Ca(HSO4)2 mediated conversion of alcohols into N-substituted amides under heterogeneous conditions: A modified Ritter reaction by Niknam, K., Zolfigol, M. A., Sadabadi, T.

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1,3-dihalo-5,5-dimethylhydantoin/NaNO2 as an efficient heterogeneous system for the N-nitrosation of N,N-dialkylamines under mild conditions by Niknam, K., Zolfigol, M. A.

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Silica-Bonded N-Propyl Diethylenetriamine Sulfamic Acid as a Recyclable Solid Acid Catalyst for the Synthesis of α-Aminonitriles by RAHI, Tahere, BAGHERNEJAD, Mojtaba, NIKNAM, Khodabakhsh

“…Silica-bonded N-propyl diethylenetriamine sulfamic acid (SBPDSA) is employed as a recyclable catalyst to synthesize a-aminonitriles. These syntheses involved…”
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Silica-functionalized N-propylpiperazine for immobilization of palladium nanoparticles as efficient heterogeneous catalyst for cyanation reactions by NIKNAM, Khodabakhsh, DERIS, Abdollah, PANAHI, Farhad

“…An efficient heterogeneous Pd catalytic system has been developed, based on immobilization of Pd nanoparticles (PNPs) on a silica-bonded N-propylpiperazine…”
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