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Showing 1-30 of 34 results for "215112" within Papers
Ping Yin et al.
Bioresource technology, 110, 258-263 (2012-02-22)
Esterification of oleic acid with ethanol catalyzed by organophosphonic acid-functionalized silica SG-T-P was optimized using response surface methodology (RSM). The interactive effect of catalyst to FFA weight ratio and molar ratio of alcohol to acid were more significant than that
Emily B Pentzer et al.
Advanced materials (Deerfield Beach, Fla.), 24(17), 2254-2258 (2012-03-28)
Poly(3-hexyl thiophene) containing chain-end thiols or phosphonic acids is crystallized to yield nanowires with the functional groups at the wire edges. CdSe quantum dots and nanorods associate with these fibrils, leading to 'superhighways' that consist of alternating parallel lanes of
The direct synthesis of a-aminomethylphosphonic acids. Mannich-type reactions with orthophosphorous acid.
Moedritzer K and Irani RR.
The Journal of Organic Chemistry, 31(5), 1603-1607 (1966)
Xiaoyun Han et al.
Ecotoxicology and environmental safety, 210, 111873-111873 (2021-01-09)
Food availability represents a major worldwide concern due to population growth, increased demand, and climate change. Therefore, it is imperative to identify compounds that can improve crop performance. Plant biostimulants have gained prominence because of their potentials to increase germination
Hui Huang et al.
Journal of the American Chemical Society, 134(39), 16171-16174 (2012-09-26)
(S)-2-Hydroxypropylphosphonic acid epoxidase (HppE) is an unusual mononuclear iron enzyme that catalyzes the oxidative epoxidation of (S)-2-hydroxypropylphosphonic acid ((S)-HPP) in the biosynthesis of the antibiotic fosfomycin. HppE also recognizes (R)-2-hydroxypropylphosphonic acid ((R)-HPP) as a substrate and converts it to 2-oxo-propylphosphonic
Carlo Ballatore et al.
ChemMedChem, 8(3), 385-395 (2013-01-31)
The carboxylic acid functional group can be an important constituent of a pharmacophore, however, the presence of this moiety can also be responsible for significant drawbacks, including metabolic instability, toxicity, as well as limited passive diffusion across biological membranes. To
Petri A Turhanen et al.
Scientific reports, 5, 8992-8992 (2015-03-12)
A Novel approach to remove metals from aqueous solutions has been developed. The method is based on a resin free, solid, non-toxic, microcrystalline bisphosphonate material, which has very low solubility in water (59 mg/l to ion free Milli-Q water and 13 mg/l
Surface modification using phosphonic acids and esters.
Clémence Queffélec et al.
Chemical reviews, 112(7), 3777-3807 (2012-04-26)
Aviran Amir et al.
Inorganic chemistry, 52(6), 3133-3140 (2013-03-05)
Metal chelators are potential therapeutic agents for treating diseases such as Wilson's and Alzheimer's where the pathology involves an excess of metal-ions (Cu(II) and Zn(II)/Cu(II)/Fe(II/III), respectively). In addition to the high affinity of the metal-ion to the chelators, metal selectivity
Maohua Miao et al.
International journal of environmental research and public health, 12(10), 13240-13250 (2015-10-28)
The associations between Bisphenol-A (BPA) exposure and reproductive hormone levels among women are unclear. A cross-sectional study was conducted among female workers from BPA-exposed and unexposed factories in China. Women's blood samples were collected for assay of follicle-stimulating hormone (FSH)
Amidoalkylation of phosphorous acid.
Vinyukov AV, et al.
Russ. J. Gen. Chem., 85(2), 366-369 (2015)
Alexander Rief et al.
PloS one, 7(9), e45345-e45345 (2012-10-03)
On alpine pastureland the decline in large-bodied earthworm numbers and biomass after abandonment of management might be the result of a shift from highly palatable grass litter to poorly digestible leaf litter of dwarf shrubs. To test this hypothesis, we
Chao Jia et al.
Bioorganic & medicinal chemistry letters, 22(1), 482-484 (2011-11-25)
VanX, a Zn(II)-dependent D-ala-D-ala dipeptidase, is essential for vancomycin resistance in Enterococcus faecium. The enzymatic activity of VanX was previously found to be inhibited competitively by 2-{[(1-aminoethyl) (hydroxy) phosphoryl]oxy} propanoic acid (1B). Here we report the synthesis and characterization of
Qing Wang et al.
Analytica chimica acta, 854, 191-201 (2014-12-07)
A hydrophilic stationary phase (SP) was prepared through grafting N-methylene phosphonic acid chitosan on magnesia-zirconia particles (P-CTS-MgO-ZrO2) via Lewis acid-base interaction. The resulting material was characterized by thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscope and nitrogen adsorption analysis.
Amidoalkylation of phosphorous acid.
Oleksyszyn J and Gruszeckae.
Tetsu to Hagane, 22(36), 3537-3540 (1981)
Marina Borges Osorio et al.
Plant physiology, 181(1), 332-352 (2019-07-03)
Phosphorus (P) is an essential macronutrient for all living organisms and limits plant growth. Four proteins comprising a single SYG1/Pho81/XPR1 (SPX) domain, SPX1 to SPX4, are putative phosphate-dependent inhibitors of Arabidopsis (Arabidopsis thaliana) PHOSPHATE STARVATION RESPONSE1 (PHR1), the master transcriptional
Rahul Bhure et al.
Materials science & engineering. C, Materials for biological applications, 33(4), 2050-2058 (2013-03-19)
Surface modification of cobalt chromium (Co-Cr) alloy is being investigated as a possible solution to the biomedical challenges arising from its usage. Self assembled monolayers (SAMs) of organophosphonic octadecylphosphonic acid (ODPA) were formed on the oxide surface of Co-Cr alloy
Yunjun Guo et al.
Bioconjugate chemistry, 23(7), 1470-1477 (2012-06-06)
Somatostatin receptors (SSTr) are overexpressed in a wide range of neuroendocrine tumors, making them excellent targets for nuclear imaging and therapy, and radiolabeled somatostatin analogues have been investigated for positron emission tomography imaging and radionuclide therapy of SSTr-positive tumors, especially
Abraham Vega et al.
Langmuir : the ACS journal of surfaces and colloids, 28(21), 8046-8051 (2012-05-05)
Phosphonic acid monolayers are being considered as versatile surface modification agents due to their unique ability to attach to surfaces in different configurations, including mono-, bi-, or even tridentate arrangements. Tethering by aggregation and growth (T-BAG) of octadecylphosphonic acid (ODPA)
Faizah Md Yasin et al.
Chemical communications (Cambridge, England), 48(81), 10102-10104 (2012-09-08)
Size selective growth of palladium nano-particles 2-7 nm in diameter on the surface of carbon nano-onions (CNOs) (derived from catalytic cracking of methane) in water involves pretreating the CNOs with p-phosphonic acid calix[8]arene then H(2)PdCl(4) followed by dynamic thin film
Alain Graillot et al.
Journal of hazardous materials, 244-245, 507-515 (2012-11-28)
In order to remove metal ions from wastewaters, thermosensitive copolymers bearing sorption properties toward metal cations were prepared by free radical copolymerization between the N-n-propylacrylamide (NnPAAm) and the (dimethoxyphosphoryl)methyl 2-methylacrylate (MAPC1), followed by a hydrolysis of the phosphonated esters into
Kunio Ikemura et al.
Dental materials journal, 31(1), 1-25 (2012-01-27)
This paper reviews the developments of dithiooctanoate monomers and acidic adhesive monomers, and their roles in multi-purpose primers and adhesives in promoting adhesion to multiple substrate materials. Novel dithiooctanoate monomers exhibited excellent bonding to precious metals and alloys when compared
Komagal Kannan Sivaraman et al.
Journal of medicinal chemistry, 56(12), 5213-5217 (2013-05-30)
The malaria parasite Plasmodium falciparum employs two metallo-aminopeptidases, PfA-M1 and PfA-M17, which are essential for parasite survival. Compounds that inhibit the activity of either enzyme represent leads for the development of new antimalarial drugs. Here we report the synthesis and
L Qi et al.
Langmuir : the ACS journal of surfaces and colloids, 28(31), 11448-11456 (2012-07-17)
In a recent publication, we have highlighted the potential of phosphonic acid terminated PEG oligomers to functionalize strong UV absorption cerium oxide nanoparticles, which yield suspensions that are stable in aqueous or organic solvents and are redispersible in different solvents
Z Grubač et al.
Materials science & engineering. C, Materials for biological applications, 33(4), 2152-2158 (2013-03-19)
Mg and Mg-alloys are promising materials for biodegradable implants. In order to slowdown the Mg-alloy (AZ91D) degradation and enhance its biocompatibility, the alloy surface was modified with alkylphosphonate self-assembling films. The binding configuration and the structural organization of alkylphosphonate monolayers
Lee-Jin Ghil et al.
Journal of nanoscience and nanotechnology, 13(12), 7912-7915 (2013-11-26)
Most sulfonic acid based-membranes come to the limit because of high cost and low performance at low relative humidity (RH). Therefore, we synthesized phosphonic acid functionalized polyaniline (PA-PANI). PANI was used as polymer back bone because of excellent chemical mechanical
E Pryazhnikov et al.
Physiological research, 61(4), 395-404 (2012-06-08)
The mode of inhibition of endplate currents by four esters of 1,1-dimethyl-3-oxybutyl phosphonic acid with different lipophilicities and molecule lengths were estimated by mathematical modeling based on previous electrophysiological data supplemented by several experiments with rhythmic stimulation. The aim was
[Not Available].
P RUMPF et al.
Comptes rendus hebdomadaires des seances de l'Academie des sciences, 224(12), 919-919 (1947-03-24)
Nadjmeh Doostdar et al.
Journal of biomedical materials research. Part A, 99(2), 173-183 (2011-10-07)
Calcific band keratopathy (CBK) is a degenerative condition resulting in the deposition of calcium salts in the superficial layers of the cornea and causing significant visual disturbance and pain of the affected eye. Unfortunately, the amount of CBK precipitates recovered
Mohamed F Abdel-Megeed et al.
Bioorganic & medicinal chemistry, 20(7), 2252-2258 (2012-03-01)
A novel series of diphenyl 1-(arylamino)-1-(pyridin-3-yl)ethylphosphonates 1-5 was obtained in high yields from reactions of 3-acetyl pyridine with aromatic amines and triphenylphosphite in the presence of lithium perchlorate as a catalyst. The structures of the synthesized compounds were confirmed by
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