Showing 1-30 of 47 results for "323209"
Ghodratollah Absalan et al.
Journal of hazardous materials, 192(2), 476-484 (2011-06-08)
The nanoparticles of Fe(3)O(4) as well as the binary nanoparticles of ionic liquid and Fe(3)O(4) (IL-Fe(3)O(4)) were synthesized for removal of reactive red 120 (RR-120) and 4-(2-pyridylazo) resorcinol (PAR) as model azo dyes from aqueous solutions. The mean size and...
Md Tabish Rehman et al.
International journal of molecular sciences, 20(4) (2019-02-17)
The bacteria expressing New Delhi Metallo-β-lactamase-1 (NDM-1) can hydrolyze all β-lactam antibiotics including carbapenems, causing multi-drug resistance. The worldwide emergence and dissemination of gene blaNDM-1 (produces NDM-1) in hospital and community settings, rising problems for public health. Indeed, there is...
Jonathan S Griffiths et al.
Plant physiology, 168(2), 502-520 (2015-05-01)
Cellulose synthase5 (CESA5) synthesizes cellulose necessary for seed mucilage adherence to seed coat epidermal cells of Arabidopsis (Arabidopsis thaliana). The involvement of additional CESA proteins in this process and details concerning the manner in which cellulose is deposited in the...
Abdulbaki Agbas et al.
The Biochemical journal, 405(1), 51-59 (2007-02-28)
Cn (calcineurin) activity is stabilized by SOD1 (Cu-Zn superoxide dismutase), a phenomenon attributed to protection from superoxide (O2*-). The effects of O2*- on Cn are still controversial. We found that O2*-, generated either in vitro or in vivo did not...
Yong-Ju Wei et al.
Guang pu xue yu guang pu fen xi = Guang pu, 25(8), 1289-1292 (2005-12-07)
Mechanism and influence factors of resonance light scattering (RLS) spectra of 4-(2-pyridylazo)-resorcinol (PAR) aqueous solution were studied. In weak acidic solutions, strong RLS of PAR can be observed. The spectral feature of RLS is related to the absorption spectra of...
Xiaoyang Liu et al.
Journal of the science of food and agriculture, 99(14), 6400-6407 (2019-07-10)
Zinc is known to play an essential role in the biological activities in the human body. In this study, a zinc-chelating peptide (ZCP) produced by Alcalase-assisted hydrolysis of the body wall of sea cucumber was isolated and identified. The ZCP...
Douglas A Mitchell et al.
Biochemistry, 44(12), 4636-4647 (2005-03-23)
The inducible isoform of nitric oxide synthase (iNOS) and three zinc tetrathiolate mutants (C104A, C109A, and C104A/C109A) were expressed in Escherichia coli and purified. The mutants were found by ICP-AES and the zinc-specific PAR colorimetric assay to be zinc free...
Anelia Atanassova et al.
Methods in molecular biology (Clifton, N.J.), 426, 319-330 (2008-06-11)
Transition metals are among the most common ligands that contribute to the biochemical and physiological properties of proteins. In the course of structural proteomic projects, the detection of transition metal cofactors prior to the determination of a high-resolution structure is...
Baoping Lu et al.
Bioelectrochemistry (Amsterdam, Netherlands), 123, 103-111 (2018-05-10)
We describe a facile method to synthesize a new type of catalyst by electrodepositing Ag nanocrystals (AgNCs) on the different polymer dyes, Poly (methylene blue) (PMB) or Poly (4-(2-Pyridylazo)-Resorcinol) (PAR) modified graphene‑carbon spheres (GS) hybrids. The self-assembled GS take dual...
Aysen Hol et al.
Environmental monitoring and assessment, 184(6), 3469-3479 (2011-06-28)
This paper reports the utilization of 4-(2-pyridylazo) resorcinol (PAR) as a chelating reagent for in-column derivatization and the determination of trace Co, Fe, and Ni ions by reversed-phase high-performance liquid chromatography with photodiode array detector. A good separation of Co...
William K Boyle et al.
PLoS pathogens, 17(2), e1009072-e1009072 (2021-02-19)
Throughout its enzootic cycle, the Lyme disease spirochete Borreliella (Borrelia) burgdorferi, senses and responds to changes in its environment using a small repertoire of transcription factors that coordinate the expression of genes required for infection of Ixodes ticks and various...
Yonggang Hu et al.
Luminescence : the journal of biological and chemical luminescence, 20(1), 25-29 (2005-02-03)
We discovered that 4-(2-pyridylazo) resorcinol (PAR) has a strong catalytic effect on luminol-potassium ferricyanide chemiluminescence (CL). Results indicated that the chemiluminescence intensities at maximum light emission were linearly corrected with the concentration of PAR over the range 1.0 x 10(-5)-1.0...
Jiaqi He et al.
Talanta, 210, 120633-120633 (2020-01-29)
Detection of trace manganese (Ⅱ) ion (Mn2+) is crucial to water safety. Here, commercially available PS-DVB microspheres were sulfonated and then filled into the SPE column in order to separate Mn2+ from complex matrices. Meanwhile, europium (III) complex was prepared...
Anna Kocyła et al.
Journal of inorganic biochemistry, 152, 82-92 (2015-09-14)
4-(2-Pyridylazo)resorcinol (PAR) is one of the most popular chromogenic chelator used in the determination of the concentrations of various metal ions from the d, p and f blocks and their affinities for metal ion-binding biomolecules. The most important characteristics of...
Y Kalyan et al.
Journal of hazardous materials, 166(1), 377-382 (2008-12-23)
A color changeable optode for Hg(II) was prepared by the immobilization of a dye 4-(2-pyridylazo)resorcinol (PAR) and a liquid ion-exchanger trioctylmethylammonium chloride (Aliquat-336) in the tri-(2-ethylhexyl) phosphate plasticized cellulose triacetate matrix. Hg(II) and CH(3)Hg(+) from aqueous samples could be quantitatively...
Nor Azah Yusof et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 69(2), 413-418 (2007-05-29)
A flow-through optical fibre chemical sensor for the determination of Co(II) at trace level using immobilised 2-(4-pyridylazo)resorcinol (PAR) as the reagent phase is proposed. PAR is physically adsorbed onto XAD-7. This method provided a great sensitivity and simplicity with wide...
Tahereh Rohani et al.
Talanta, 80(5), 1827-1831 (2010-02-16)
A 4-(2-pyridylazo)-resorcinol (PAR)-modified carbon ceramic electrode (CCE) prepared by the sol-gel technique has been reported for the first time in this paper. By immersing the CCE in aqueous solution of PAR (0.001molL(-1)), after a short period of time, a thin...
Leon Barron et al.
Journal of chromatography. A, 1213(1), 31-36 (2008-09-10)
The selectivity, retention and separation of transition metals on a short (2 mm x 50 mm) column packed with a poly-iminodiacetic acid functionalised polymer 10 microm resin (Dionex ProPac IMAC-10) are presented. This stationary phase, typically used for the separation...
Muharrem Ince et al.
Water environment research : a research publication of the Water Environment Federation, 80(11), 2104-2110 (2008-11-26)
A simple, sensitive, accurate, and selective method for determination of ultratrace levels of copper is modified. The method is based on preconcentration of copper on the 4-(2-pyridyl-azo) resorcinol-loaded amberlite XAD-7 (non-ionic copoly[styrene-acrylic compound]) at pH 5.0 to 6.5 for contact...
G Bagherian et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 67(2), 378-384 (2006-09-09)
A simple, sensitive and selective spectrophotometric method for the simultaneous determination of Co(II) and Pd(II) using partial least square (PLS) calibration and H-point standard addition method is described. The method is based on the complex formation of Co(II) and Pd(II)...
Emilie Bourlès et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 17(49), 13762-13772 (2011-11-05)
The reactivity of a series of Zn(Cys)(4) zinc finger model peptides towards H(2)O(2) and O(2) has been investigated. The oxidation products were identified by HPLC and ESI-MS analysis. At pH<7.5, the zinc complexes and the free peptides are oxidised to...
Abhijit Chatterjee et al.
Journal of molecular graphics & modelling, 25(2), 208-218 (2006-01-24)
Amino-functional silanol surface are mostly used for the immobilization of inorganic ions, molecules, organic or biochemical molecules onto the mesopore surface. In analytical chemistry, the metal ion uptake was visualized through colorimetric sensors using chromophore molecules. One needs to know...
Gilles Montavon et al.
Dalton transactions (Cambridge, England : 2003), 39(5), 1366-1374 (2010-01-28)
Literature reports of the efficacy of para-sulfonatocalix[6]- and calix[8]-arenes as U(vi) complexants indicated that they might be useful for in vivo chelation of the novel therapeutic alpha-emitter (230)U. We have studied the complexation of U(vi) with para-sulfonatocalix[6]arene and para-sulfonatocalix[8]arene by...
Alesha C Stewart et al.
ACS infectious diseases, 3(12), 927-940 (2017-10-03)
Use and misuse of antibiotics have driven the evolution of serine β-lactamases to better recognize new generations of β-lactam drugs, but the selective pressures driving evolution of metallo-β-lactamases are less clear. Here, we present evidence that New Delhi metallo-β-lactamase (NDM)...
Dendi Susanto et al.
Journal of mass spectrometry : JMS, 46(5), 508-516 (2011-04-27)
Quantitation of iron oxide (Fe(2)O(3)) in pharmaceutical formulations using electrospray ionization mass spectrometry (ESI-MS) following iron complexation with 4-(2-pyridylazo)resorcinol (PAR) was evaluated. Complexation of Fe(III) with PAR was found to produce an intense mass spectral signal at low pH compared...
Qianshan Chen et al.
The Analyst, 145(16), 5624-5630 (2020-07-09)
As an effective nuclear energy resource, uranium plays an important role in industry and energy but the wastes of uranium also cause radioactive contamination, which is harmful to the environment and the human body. Herein, a responsive photonic crystal (PC)...
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Albena T Dinkova-Kostova et al.
Biochemistry, 44(18), 6889-6899 (2005-05-04)
Induction of the phase 2 response, a major cellular reaction to oxidative/electrophile stress depends on a protein triad: actin-tethered Keap1 that binds to Nrf2. Inducers react with Keap1 releasing Nrf2 for nuclear translocation and activation of the antioxidant response element...
Tomoyuki Ohya et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 146, 127-132 (2019-02-16)
We developed a new apparatus for the routine production of 64Cu in clinical use. The apparatus has many disposable parts that stabilize the product quality (such that there is a low deviation of the concentrations of impurity metals in the...
Tomoyuki Ohya et al.
Nuclear medicine and biology, 59, 56-60 (2018-02-24)
Copper-67 is an attractive beta emitter for targeted radionuclide therapy. However, the availability of 67Cu limits its potential use in a wide range of applications. In this study, we propose an easy small-scale production of 67Cu using 64Ni target for...

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