نتایج جستجو برای: polymeric column

تعداد نتایج: 97709  

Journal: :Biological & pharmaceutical bulletin 2013
Kouichi Shiraishi Masayuki Yokoyama

Polymeric micelles are assemblies of synthetic polymers and have been studied and developed as drug carriers for targeting. Polymeric micelles are composed of the inner core and the outer shell, and typically form from AB-type block copolymers in which two polymer blocks are connected in a tandem form. Polyethyleneglycol (PEG) has been most commonly used as one polymer block composing the outer...

Journal: :Electrophoresis 2004
Cevdet Akbay Shahab A Shamsi

The effect of hydrocarbon chain length on chemical selectivity in micellar electrokinetic chromatography (MEKC) was investigated using polymeric sulfated surfactants: poly-(sodium 7-octenyl sulfate), poly(sodium 8-nonenyl sulfate), poly(sodium 9-decenyl sulfate), and poly(sodium 10-undecenyl sulfate). Linear solvation energy relationships (LSERs) and free energy of transfer studies were conduct...

2017
Naoki Doi Yasushi Sasai Yukinori Yamauchi Tetsuo Adachi Masayuki Kuzuya Shin-ichi Kondo

We developed the novel polymeric prodrugs synthesized by mechanochemical solid-state copolymerization of glucose-based polysaccharides (dextran orglycogen) and the methacryloyloxy derivative of 5-fluorouracil (5-FU). The copolymerization proceededreadily and each polymeric prodrug was quantitatively obtained within8 h reaction. The number average molecular weight (Mn) and polydispersity (H) of ...

The nanostructured anatase TiO2 with high thermal stability was prepared by polymeric sol-gel method without any additives. The particle size distribution of polymeric titania sol was determined by dynamic light scattering (DLS). Then properties of obtained titania were investigated by TG-DTA, XRD, FESEM and TEM. Also, the decolorization capability of resultant anatase was evaluated using methy...

Journal: :Journal of chromatography. A 2006
Jet C Van de Steene Kjell A Mortier Willy E Lambert

When developing an LC-MS/MS-method matrix effects are a major issue. The effect of co-eluting compounds arising from the matrix can result in signal enhancement or suppression. During method development much attention should be paid to diminish matrix effects as much as possible. The present work evaluates matrix effects from aqueous environmental samples in the simultaneous analysis of a group...

Journal: :Chemical communications 2012
Changhua Li Shiyong Liu

Fluorescent polymeric assemblies and nanoparticles (NPs) of nanoscale dimensions have become a focus of intensive investigations during the past few decades due to combined advantages such as improved biocompatibility, water dispersibility, stimuli-responsiveness, facile integration into optical detection devices, and the ability of further functionalization. In addition, the chemical compositi...

Journal: :Nanoscale 2015
Xiaoyong Zhang Ke Wang Meiying Liu Xiqi Zhang Lei Tao Yiwang Chen Yen Wei

The development of polymeric luminescent nanomaterials for biomedical applications has recently attracted a large amount of attention due to the remarkable advantages of these materials compared with small organic dyes and fluorescent inorganic nanomaterials. Among these polymeric luminescent nanomaterials, polymeric luminescent nanomaterials based on dyes with aggregation-induced emission (AIE...

Journal: :nanomedicine journal 0
mahya rahmani department of medical nanotechnology, school of advanced technologies in medicine, tehran university of medical sciences, tehran, iran sepideh arbabi bidgoli department of toxicology and pharmacology, islamic azad universtiy, pharmaceutical sciences branch (iaups), tehran, iran pharmaceutical sciences research center, islamic azad university, pharmaceutical sciences branch (iaups), tehran, iran seyed mahdi rezayat department of medical nanotechnology, school of advanced technologies in medicine, tehran university of medical sciences, tehran, iran department of toxicology and pharmacology, islamic azad universtiy, pharmaceutical sciences branch (iaups), tehran, iran

conventional transdermal drug delivery systems (tdds) have been designed for drug delivery through the skin. these systems use the permeability property of stratum corneum, the outermost surface layer of the skin. applying polymeric micro and nanofibers in drug delivery has recently attracted great attention and the electrospinning technique is the preferred method for polymeric micro-nanofiber...

Journal: :journal of the iranian chemical research 0
mirzaagha babazadeh laboratory of organic chemistry, applied chemistry department, faculty of sciences, islamic azad university, tabriz branch, tabriz, iran ladan edjlali laboratory of organic chemistry, applied chemistry department, faculty of sciences, islamic azad university, tabriz branch, tabriz, iran zeynab hajizeynalabedini laboratory of organic chemistry, applied chemistry department, faculty of sciences, islamic azad university, tabriz branch, tabriz, iran

acrylic-type polymeric systems having degradable ester bonds linked to ibuprofen were synthesized and evaluated as materials for drug delivery. ibuprofen, as a non-steroidal anti-inflammatory drug, was linked to 2-hydroxyethyl methacrylate by activated ester methodology in one-pot procedure. the resulting methacrylic derivative of ibuprofen was copolymerized with 2-hydroxyethyl methacrylate and...

Journal: :international journal of iron & steel society of iran 2009
m. eshraghi-kakhki m. a. soltani k. amini h. r. mirjalili r. rezaei

aqueous polymer quenchants are being used increasingly in steel heat treatment industries as a substitution for conventional quenchants. by adjusting the quench parameters of the polymeric media, it is possible to achieve desirable microstructure and mechanical properties in addition to reduction in distortion and cracking. in this work, polyalkylene glycol (pag) aqueous solution was used as th...

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