نتایج جستجو برای: dad

تعداد نتایج: 3285  

2014
Dalia A. Hamdy Tarek S. Belal

Objective. To develop and compare HPLC-DAD and UHPLC-UV assays for the quantitation of posaconazole in bulk powder and suspension dosage form. Methods. Posaconazole linearity range was 5-50 μg/mL for both assays. For HPLC-DAD assay, samples were injected through Zorbax SB-C18 (4.6 × 250 mm, 5 μm) column. The gradient elution composed of the mobile phase acetonitrile: 15 mM potassium dihydrogen ...

2018
Maciej J K Simon Henry F H Halm Markus Quante

BACKGROUND Degenerative adult de novo (DAD) scoliosis appears characteristically in the sixth or seventh decade with symptoms of severe back pain and radiculopathy or spinal claudication. The aim of this study was to enhance the knowledge of perioperative complications and detect possible risk factors in this selective DAD scoliosis surgery. METHODS This retrospective study included only pati...

2010
Azin Nezami Florence Poy Angela Toms Wei Zheng Michael J. Eck

Formin proteins direct the nucleation and assembly of linear actin filaments in a variety of cellular processes using their conserved formin homology 2 (FH2) domain. Diaphanous-related formins (DRFs) are effectors of Rho-family GTPases, and in the absence of Rho activation they are maintained in an inactive state by intramolecular interactions between their regulatory N-terminal region and a C-...

Journal: :Food additives and contaminants 2004
C M Maragos

Moniliformin is a mycotoxin produced by certain fungi pathogenic to maize. It is capable of causing disease in domestic animals, possibly through inhibition of pyruvate dehydrogenase. Testing for MON commonly involves extraction of maize, isolation of moniliformin using solid-phase extraction columns and detection with high-performance liquid chromatography (HPLC) or gas chromatography. A capil...

Journal: :Rapid communications in mass spectrometry : RCM 2002
Filip Cuyckens Magda Claeys

Different reversed-phase liquid chromatography (LC) columns of conventional dimensions were coupled to an ultraviolet photodiode array detector (UV-DAD) and a magnetic sector-type spectrometer, equipped with an electrospray ionization (ESI) source, by a laboratory-made flow splitter. A mixture of three flavonoid-O-glycosides was employed to examine the effects of the solvent composition, the fl...

2016
Kristian Antonsen Charlotte Vallentin Rosenstock Lars Hyldborg Lundstrøm

AIM OF DATABASE The aim of the Danish Anaesthesia Database (DAD) is the nationwide collection of data on all patients undergoing anesthesia. Collected data are used for quality assurance, quality development, and serve as a basis for research projects. STUDY POPULATION The DAD was founded in 2004 as a part of Danish Clinical Registries (Regionernes Kliniske Kvalitetsudviklings Program [RKKP])...

Journal: :Chromatographia 2021

Abstract Four antibiotics, oxytetracycline, tetracycline, doxycycline, and chlortetracycline were separated quantified in medicated feed. Tetracyclines from feed samples extracted with 0.01 M citric buffer acetonitrile (pH 3.0) further purified 0.45 µm syringe filters. The extract was on commercial RP-C18 column analyzing using liquid chromatograph (LC) two different detectors: diode array dete...

Journal: :Molecules 2013
Hee-Jung Sim Ji Hee Kim Kang Ro Lee Jongki Hong

Two bisbenzylisoquinoline alkaloids, two morphine alkaloids, one aporphine alkaloid, syringaresinol and aristolochic acid І were selected as marker compounds and simultaneously analyzed using an ultra-high pressure liquid chromatography-diode array detection (UHPLC-DAD) method. These marker compounds were used for the quality control of Fangchi species of different origins, including Sinomenium...

2014
Hanna Barchanska Anna Kowalska Barbara Poloczek

Simple and effective extraction methods based on matrix solid-phase dispersion (MSPD), dispersive liquid-liquid microextraction (DLLME), and solid-phase extraction (SPE) coupled with high-performance liquid chromatography with diode array detector (HPLC-DAD) were developed to determine triketone herbicides-sulcotrione (SUL), mesotrione (MES), tembotrione (TEMB), and their degradation products-i...

Journal: :The Science of the total environment 2000
K A Hostetler E M Thurman

Analytical methods using high-performance liquid chromatography-diode array detection (HPLC-DAD) and high-performance liquid chromatography/mass spectrometry (HPLC/MS) were developed for the analysis of the following chloroacetanilide herbicide metabolites in water: alachlor ethanesulfonic acid (ESA); alachlor oxanilic acid; acetochlor ESA; acetochlor oxanilic acid; metolachlor ESA; and metolac...

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