نتایج جستجو برای: مبدل های چندپورته acac

تعداد نتایج: 479540  

2005
Pia Werndrup Margaret Hilda Thatcher

Werndrup, Pia. 2005. Synthesis, Structure Determination, and Sol-Gel Processing of Heterometallic Heteroleptic Alkoxide Complexes of Late Transition Metals. Doctor’s dissertation. ISSN 1652-6880, ISBN 91-576-7026-9. The thesis describes synthesis of single-source precursors (SSP) for sol-gel preparation of thin films and nanocomposites. The structures of the SSPs were determined by singlecrysta...

Journal: :Environmental health engineering and management 2022

Background: Olive mill wastewater (OMW) is characterized by its high organic content and refractory compounds. The aim of this study was to evaluate compare the efficiency UV/O3 UV/ acetylacetone (UV/AcAc) processes for treatment pretreated OMW coagulation/microfiltration (C&M) process. Methods: In study, a laboratory-scale UV plug flow reactor with ancillary equipment fabricated. experimen...

2008
D. Mustafi E. Peng S. Foxley G. S. Karczmar M. Zamora J. W. Ejnik

We have developed a new class of MRI contrast agents that contain VO-chelated organic ligands, namely VO(acac)2. As contrast agents, vanadyl (VO ) chelates provided excellent T1 and T2 * contrasts compared to that of GdDTPA in high-resolution MR images of rodent tumors. This class of contrast agents is taken up by cancer cells that are highly glycolytic. In vivo MRI experiments demonstrated pre...

Journal: :Nano letters 2014
Yongsheng Yu Weiwei Yang Xiaolian Sun Wenlei Zhu X-Z Li D J Sellmyer Shouheng Sun

We report a simple, yet general, approach to monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs) by coreduction of M(acac)2 and Pt(acac)2 (acac = acetylacetonate) with oleylamine at 300 °C. In the current reaction condition, oleylamine serves as the reducing agent, surfactant, and solvent. As an example, we describe in details the synthesis of 9.5 nm CoPt NPs with their compositions c...

Journal: :Organic & biomolecular chemistry 2013
Emilia Iglesias Isabel Brandariz

The nitrosation of acetylacetone (AcAc) has been revised in an aqueous acid medium of perchloric acid and buffers of mono-, di-, or tri-chloroacetic acid. The results show that in the presence of buffers, under conditions of [nit] ≪ [AcAc] (nit = sodium nitrite) the reaction cannot be studied by UV-Vis spectroscopy, contrary to the recently published paper by García-Rio et al. (J. Org. Chem., 2...

2015

In the fourth sentence of the second paragraph under the subheading “[Pt(acac)2(DMS)] decreases expression and activity of MMP-2 and -9” in the Results section, the units for SB203580 should be listed in μM instead of mM. The correct sentence is: When SH-SY5Y cells were pretreated for 30 min with SB203580 (1 and 10 μM), and then with 0.50 μM [Pt(acac)2(DMS)] for 24 h, the inhibition of MMP-2 an...

Journal: :Brain research 2012
Maggie Roy Scott Nugent Jennifer Tremblay-Mercier Sébastien Tremblay Alexandre Courchesne-Loyer Jean-François Beaudoin Luc Tremblay Maxime Descoteaux Roger Lecomte Stephen C Cunnane

Despite decades of study, it is still unclear whether regional brain glucose uptake is lower in the cognitively healthy elderly. Whether regional brain uptake of ketones (β-hydroxybutyrate and acetoacetate [AcAc]), the main alternative brain fuel to glucose, changes with age is unknown. We used a sequential, dual tracer positron emission tomography (PET) protocol to quantify brain (18)F-fluorod...

ژورنال: بسپارش 2012
سحر امیری محمدعلی سمسارزاده

پلیمرشدن وینیل استات با کمپلکس لیگاند دی متیل فرمامید(DMF) و کاتالیزورهای کبالت استواستونات (Co (acac)2)، روی کلرید (ZnCl2 )، قلع کلرید (SnCl2)، ذرات میان تخلخلی MCM-41 و SPB  در حضور آغازگر بنزوئیل پراکسید در پلیمرشدن توده ای بررسی شد. درصد شاخه ای شدن نسبی پلی وینیل استات حاصل در حضور کاتالیزورهای مختلف با استفاده از طیف سنجی رزونانس مغناطیسی هسته هیدروژن محاسبه شد که حاکی از خطی بودن پلی وین...

Journal: :Molecules 2004
Yang Qu Hai-Liang Zhu Zhong-Lu You Min-Yu Tan

Two mononuclear complexes, [Ni(acac)2].0.5CH3OH (1) and[Co(acac)2NO3].2H2O (2) (acac = pentane-2,4-dione), have been synthesized and characterized by single crystal X-ray analysis. Complex 1 crystallizes in the monoclinic space group P2(1)/c with a = 9.295(4), b = 11.450(5), c = 12.974(6) A, V = 1379.1(11) A(3),beta = 92.854(7), and Z = 4. Complex 2 crystallizes in the triclinic space group P(-...

Journal: : 2022

سابقه و هدف: سلامت خاک از مولفه ‏های اصلی در دستیابی به سامانه ‏‏های کشاورزی پایدار بوده که شدت تحت تاثیر عملیات زراعی مانند خاکورزی قرار می ‏گیرد. را توان با استفاده پارامترهای فیزیکی، شیمیایی بیولوژیکی قالب الگوریتم‏ های مشخص کمّی کرد. نتیجه، بررسی وضعیت کیفی باروری مدیریتی مختلف زمین جهت استقرار مناسب برای تولید بهینه نظام‌های امری ضروری می‏ باشد. چارچوب ارزیابی مدیریت SMAF 1 عنوان ابزاری قدر...

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