نتایج جستجو برای: barium sulfate

تعداد نتایج: 66171  

Journal: :Angewandte Chemie 2000
Qi Cölfen Antonietti

Peach, peanut, fiber, and flower (see picture) crystal morphologies are achieved from the precipitation of simple minerals in the presence of specifically adsorbing polymers. These crystal design effects are illustrated using BaSO(4) and double-hydrophilic block copolymers, the latter featuring carboxylate, sulfonate, phosphonate, and aspartic acid groups.

2001
Zailong Zhuang Bo Bian Robert M. White David E. Laughlin

The possibility of using sendust (FeAlSi) as the soft magnetic underlayer for hexagonal barium ferrite (BaM) and strontium ferrite (SrM) was studied. Sendust films were found to retain their soft magnetic properties with a rapid thermal anneal (RTA) at 800 C for 60 s, which is necessary to crystallize the as-deposited amorphous BaM and SrM films. Several film structures with sendust films as th...

Journal: :AJNR. American journal of neuroradiology 2014
L Alhilali S-h Seo B F Branstetter S Fakhran

BACKGROUND AND PURPOSE Globus sensation is common and difficult to treat. The purpose of our study was to compare the diagnostic and therapeutic efficacy of barium esophagram and neck CT in patients with isolated globus sensation, to determine which of these modalities should be preferred in the evaluation of this condition. MATERIALS AND METHODS We retrospectively identified patients present...

2016
S. Torres A. Bravo

This paper focuses on the loading and release studies of tetracycline as model drug from spherical aggregates of micron size (approx. 1.2 μm in diameter) of barium hexaferrite (BaO·6Fe2O3) synthetized from wet chemical sol-gel method via spray drying. BaO·6Fe2O3 aggregates were characterized using x-ray diffraction and scanning electron microscopy. The load capacity of BaO·6Fe2O3 systems was re...

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