Relevant bibliographies by topics / 2-ethyl hexyl amine

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  2. Dissertations / Theses

Academic literature on the topic '2-ethyl hexyl amine'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "2-ethyl hexyl amine"

1

Journal, Baghdad Science. "Synthesis and Characterization of a Molecularly Imprinted Polymer for Diclofenac Sodium Using (2-vinylpyridine and 2-hydroxyethyl metha acrylate) as the Complexing Monomer." Baghdad Science Journal 15, no. 1 (March 4, 2018): 63–72. http://dx.doi.org/10.21123/bsj.15.1.63-72.

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Four electrodes were synthesized based on molecularly imprinted polymers (MIPs). Two MIPs were prepared by using the diclofenac sodium (DFS) as the template, 2-hydroxy ethyl metha acrylate(2-HEMA) and 2-vinyl pyridine(2-VP) as monomers as well as divinyl benzene and benzoyl peroxide as cross linker and initiator respectively. The same composition used for prepared non-imprinted polymers (NIPs) but without the template (diclofenac sodium). To prepared the membranes electrodes used different plasticizers in PVC matrix such as: tris(2-ethyl hexyl) phosphate (TEHP), tri butyl phosphate (TBP), bis(2-ethyl hexyl) adipate (BEHA) and tritolyl phosphate (TTP). The characteristics studied the slop, detection limit, life time and linearity range of DFS–MIPs electrodes. The results were obtained from selectivity measurements on amino acids showed good response as well as pharmaceuticals analysis.
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Al-Safi, Ahmed Jalil, and Yehya Kamal Al-Bayati. "Synthesis and Characterization of Molecularly Imprinted Polymer for Tramadol Hcl Using Acryl Amide and 2-Hydroxyethyl Meth Acrylate as Monomers." Current Issues in Pharmacy and Medical Sciences 31, no. 2 (June 1, 2018): 81–88. http://dx.doi.org/10.1515/cipms-2018-0016.

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Abstract Four electrodes were synthesized based on molecularly imprinted polymers (MIPs). Two MIPs were prepared by using tramadol hydrochloride (TRH) as the template, acryl amide (AA) and 2-hydroxy ethyl meth acrylate (2-HEMA) as monomers, divinyl benzene as a cross linker, and benzoyl peroxide as initiator, respectively. The same composition was used to prepare non-imprinted polymers (NIPs), but without the template (Tramadol hydrochloride). Different plasticizers were employed to prepare the membranes; tris (ethyl hexyl) phosphate (TEHP), tri Butyl phosphate (TBP), di-octyl phthalate (DOP) and nitrobenzene (NB) in PVC matrix. The electrode characteristics and properties were studied, including: slope, detection limit, life time and linearity range. The results of selectivity coefficient measurements using amino acids as interfering species showed no effect on tramadol electrode response. The prepared electrodes were intended for use in determining tramadol in pharmaceutical samples
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Otomo, Ikumi, Kanna Watanabe, Chiaki Kuroda, and Kenichi Kobayashi. "Chain Length of Amphipathic-Type Thioesters Dramatically Affects Reactivity in Aqueous Amidation Reactions with Cysteine Esters." SynOpen 01, no. 01 (March 2017): 0059–62. http://dx.doi.org/10.1055/s-0036-1588519.

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The reaction of five amphipathic-type thioesters, CH3(CH2) m COS(CH2) n COONa (m + n = 12), with cysteine hexyl, butyl, and ethyl esters were studied in aqueous medium. Compounds with the thioester group in close proximity to the carboxylate moiety (m = 10, n = 2) afforded amides in almost quantitative yield, whereas no reaction proceeded by using compounds with the thioester group distant from the carboxylate. In contrast, no clear difference in yield was observed among the five amphipathic-type thioesters upon reaction with valine hexyl ester. The results indicate that the reaction is affected by both the position of the thioester group and the hydrophilic/hydrophobic properties of the amino acid side chain.
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Takahashi, Masahiro, Fumiyo Tani, Yuuko Kawai, and Hiroshi Takeuchi. "Extraction Equilibria of Amino Acids by Di(2-ethyl hexyl) Phosphoric Acid in n-Heptane Solutions." KAGAKU KOGAKU RONBUNSHU 23, no. 2 (1997): 280–85. http://dx.doi.org/10.1252/kakoronbunshu.23.280.

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5

Beg, Mohd Amin, and Ishfaq Ahmad Sheikh. "Endocrine Disruption: Structural Interactions of Androgen Receptor against Di(2-ethylhexyl) Phthalate and Its Metabolites." Toxics 8, no. 4 (December 8, 2020): 115. http://dx.doi.org/10.3390/toxics8040115.

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Diethylhexyl phthalate (DEHP) is a commonly used plasticizer in the manufacture of polyvinyl chloride plastics for household and commercial use. DEHP is a ubiquitous ecocontaminant and causes developmental and reproductive problems in children and adults. After exposure, DEHP is metabolized by endogenous hydrolysis and oxidation into the primary metabolite, mono-(2-ethylhexyl) phthalate (MEHP), and the secondary metabolites, mono-(2-ethyl-5-hydroxhexyl)phthalate (5-OH-MEHP), mono-(2-ethyl-5-oxohexyl) phthalate (5-oxo-MEHP), mono-(2-ethyl-5-carboxypentyl) phthalate (5-cx-MEPP), and mono-[(2-carboxymethyl)hexyl] phthalate (2-cx-MMHP). Very few studies have been reported on the adverse effects of DEHP metabolites, and the available information indicates that the metabolites might also be equally or more active as compared to the parent compound. In the present study, induced fit docking was used for structural binding characterization of the above five DEHP metabolites with androgen receptor (AR) to predict the potential endocrine-disrupting effects of these metabolites in AR signaling. All the DEHP metabolites interacted with the ligand-binding pocket of AR forming amino-acid residue interactions, hydrogen bonding, and pi-pi interactions. The binding energy of DEHP with AR was similar to that of native ligand testosterone. The amino-acid residue interactions of DEHP metabolites had 91–100% similarity compared to that of testosterone. In addition, all the DEHP metabolites and testosterone showed a common hydrogen bonding interaction with amino-acid Arg-752 of AR. Taken together, the structural binding data in the present study suggested the potential for DEHP metabolites to disrupt AR signaling, which may lead to androgen-related reproductive dysfunction.
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6

Adamer, Verena, Gerhard Laus, Ulrich J. Griesser, and Herwig Schottenberger. "Synthesis and Sorption Analysis of Task-specific Fluorous Ionic Liquids." Zeitschrift für Naturforschung B 68, no. 10 (October 1, 2013): 1154–62. http://dx.doi.org/10.5560/znb.2013-3142.

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Six 1-alkyl-4-tridecafluorooctyl-1,2,4-triazolium triflimides 2a-f and 4-amino-1-tridecafluorooctyl- 1,2,4-triazolium triflimide (4) were prepared from the respective iodides 1a-f (1a, 2a: n-propyl; 1b, 2b: n-butyl; 1c, 2c: n-hexyl; 1d, 2d: n-heptyl; 1e, 2e: n-octyl; 1f, 2f: n-decyl) and iodide 3 by ion metathesis. Compounds 2a and 4 are liquid at room temperature. Two liquid fluorous imidazolium salts bearing functionalized polar substituents were synthesized in an analogous manner, namely 1-(2- (diethylamino)ethyl)-3-(heptadecafluorodecyl)imidazolium triflimide (5b) and 1-(2-hydroxyethyl)- 3-(heptadecafluorodecyl)imidazolium triflimide (6b) from the respective bromides 5a and 6a. The bis(triflimide) 5c has a melting point slightly above room temperature. Three fluorous ionic liquids (ILs; 2a, 5b, and 6b) were subjected to vapor sorption analysis at 25 °C and exhibited dual affinity to water and, even much more pronounced, to methoxynonafluorobutane (hydrofluoroether HFE-7100). Thus, IL 6b absorbed 3:2% (by weight) water and 200% HFE, whereas ILs 2a and 5b absorbed 0.4 and 0:5% water, but 300 and 1200% HFE, respectively. Commercial 1-butyl-2,3- dimethyl-imidazolium triflimide and 1-ethyl-3-methyl-imidazolium triflimide were used as reference compounds and absorbed 0.9 and 2:2% water, respectively, but only 17% HFE.
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Peretz, Sandu, Manuela Florea-Spiroiu, Dan-Florin Anghel, Daniela Bala, Florina Branzoi, and Jose-Calderon Moreno. "Chitosan/anionic surfactant microparticles synthesized by high pressure spraying method for removal of phenolic pollutants." Open Chemistry 10, no. 6 (December 1, 2012): 1969–79. http://dx.doi.org/10.2478/s11532-012-0126-y.

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AbstractBiopolymeric microparticles were prepared by rapid expansion of high pressure CO2-chitosan (Chi) solution in sodium bis-(2-ethyl hexyl) sulfosuccinate (AOT) solution. At pressures higher than 2 MPa, ultrafine particles were formed while under this value, wires were obtained. The formation of Chi/AOT complex was confirmed by Fourier Transform Infrared (FTIR) Spectroscopy, whereas scanning electron microscopy was used to characterize the morphology, size and shape of the particles. The FTIR spectrum proved the interaction between the sulfonate groups of AOT and the amino groups of Chi. Microparticles are quasi-spherical in wet conditions and irregular after freeze drying, presenting a rough surface with many pores. Lyophilized hydrophobic microparticles were used to remove phenol and o-cresol from aqueous solution, and the adsorption process showed a maximum efficiency in the 7–8 pH range. The uptake of phenol and o-cresol increased with the amount of particles and decreased with increasing the pollutant concentration. The adsorption occurred rapidly in the first 60–120 minutes, and leveled off thereafter.
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8

Pahan, S., K. K. Singh, P. Sinha Roy, S. Panja, P. S. Dhami, J. N. Sharma, C. P. Kaushik, M. Kumar, and J. S. Yadav. "Encapsulated polymeric beads impregnating unexplored amide, N,N′-bis(2-ethyl hexyl) α-hydroxy acetamide (BEHGA) – preparation, sorption and kinetic studies for tri-, tetra- and hexavalent radionuclides." Radiochimica Acta 106, no. 4 (March 28, 2018): 319–27. http://dx.doi.org/10.1515/ract-2017-2814.

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AbstractRemoval of actinides (trivalent, tetravalent and hexavalent) from nitric acid medium was studied using solid-liquid extraction technique employing polymeric encapsulated beads (PEBs) using an indigenously synthesized, unexplored novel monoamide, N,N′-bis(2-ethyl hexyl) α-hydroxy acetamide (BEHGA). The PEBs were synthesized by phase inversion technique. The structure and morphology of the synthesized PEBs were evaluated by employing various characterization techniques like FT-IR, TGA and SEM. The well characterized PEBs were studied for its Am(III), Pu(IV) and U(VI) sorption behavior from nitric acid medium. Kinetics studies showed that the sorption is fast with equilibrium being reached within 60 min of equilibration. The sorption mechanism follows pseudo-second-order mechanism with intraparticle diffusion playing an important role. Langmuir isotherm model was found to best describe the sorption isotherm. The maximum Am(III) sorption capacity of the PEBs was found to be 8.45 mg/g (experimental) and 8.43 mg/g (Langmuir). Back extraction was possible using 0.5 M HNO3. Stability of the PEBs was found to be quite good with no significant structural deformation or leaching out of the extractant in 4.0 M HNO3solution for at least up to 8 days.
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9

Hayes, Brendan A., Surendra Gupta, Shao-Chieh Chang, Ronald E. Utecht, and David E. Lewis. "Photochemically activated antiviral halogenated 1,8-naphthalimides: Synthesis of N, N′-BIS-{2-[(5-bromo-2-[1-14C]hexyl-1H-benz[DE]isoquinolin-1,3(2H)-dion-6-YL)amino]ethyl}hexanediamide." Journal of Labelled Compounds and Radiopharmaceuticals 38, no. 7 (July 1996): 607–12. http://dx.doi.org/10.1002/(sici)1099-1344(199607)38:7<607::aid-jlcr875>3.0.co;2-q.

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10

Yamamoto, S., E. Tanaka, and H. Higashi. "Mediation by Intracellular Calcium-Dependent Signals of Hypoxic Hyperpolarization in Rat Hippocampal CA1 Neurons In Vitro." Journal of Neurophysiology 77, no. 1 (January 1, 1997): 386–92. http://dx.doi.org/10.1152/jn.1997.77.1.386.

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Yamamoto, S., E. Tanaka and H. Higashi. Mediation by intracellular calcium-dependent signals of hypoxic hyperpolarization in rat hippocampal CA1 neurons in vitro. J. Neurophysiol. 77: 386–392, 1997. In response to oxygen deprivation, CA1 pyramidal neurons show a hyperpolarization (hypoxic hyperpolarization), which is associated with a reduction in neuronal input resistance. The role of extra- and intracellular Ca2+ ions in hypoxic hyperpolarization was investigated. The hypoxic hyperpolarization was significantly depressed by tolbutamide (100 μM); moreover, the response was reversed in its polarity in medium containing tolbutamide (100 μM), low Ca2+ (0.25 mM), and Co2+ (2 mM), suggesting that the hypoxic hyperpolarization is mediated by activation of both ATP-sensitive K+ (KATP) channels and Ca2+-dependent K+ channels. The hypoxic depolarization in medium containing tolbutamide, low Ca2+, and Co2+ is probably due to inhibition of the electrogenic Na+-K+ pump and concomitant accumulation of interstitial K+. Hypoxic hyperpolarizations were depressed in either low Ca2+ (0.25 or 1.25 mM) or high Ca2+ (5 or 7.5 mM) medium (control: 2.5 mM), indicating that there is an optimal extracellular Ca2+ concentration required to producethe hypoxic hyperpolarization. Bis-( o-aminophenoxy)- N,N,N′,N′tetraacetic acid (BAPTA)-AM (50–100 μM), procaine (300 μM), or ryanodine (10 μM) significantly depressed the hypoxic hyperpolarization, suggesting that Ca2+ released from intracellular Ca2+ stores may have an important role in the generation of hypoxic hyperpolarization. The high-affinity calmodulin inhibitor N-(6-amino-hexyl)-5-chloro-1-naphthalenesulfonomide hydrochloride (W-7) (5 μM) completely blocked, whereas the low-affinity calmodulin inhibitor N-(6-aminohexyl)-1-naphthalenesulfonomide hydrochloride (W-5) (50 μM) did not affect, the hypoxic hyperpolarization. The calmodulin inhibitor trifluoperazine (50 μM) also suppressed the hypoxic hyperpolarization. In addition, calcium/calmodulin kinase II inhibitor 1-[N,O-bis(1,5-isoquinol-inesulfonyl)- N-methyl-l-tyrosyl]-4-phenyl-piperazine (KN-62) (10 μM) markedly depressed the amplitude and net outward current of the hypoxic hyperpolarization without affecting the reversal potential. In contrast, neither the myosin light chain kinase inhibitor 1-(5-iodonaphthalene-1-sulfonyl)-1H-hexa-hydro-1,4-diazepin hydrochloride (ML-7) (10 μM) nor the protein kinase A inhibitorN-[2-(p-bromocinnamyl-amino)ethyl]-5-isoquinolinesulfonamide(H-89) (1 μM) significantly altered the hypoxic hyperpolarization. These results suggest that calmodulin kinase II, which is activated by calmodulin, may contribute to the generation of the hypoxic hyperpolarization. In conclusion, the present study indicates that, in the majority of hippocampal CA1 neurons, the hypoxic hyperpolarization is due to activation of both KATP channels and Ca2+-dependent K+ channels.
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Dissertations / Theses on the topic "2-ethyl hexyl amine"

1

Bawareth, Bander. "Membrane Separation of 2-Ethyl Hexyl Amine/1-Decene." Thesis, 2012. http://hdl.handle.net/10754/262752.

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1-Decene is a valuable product in linear alpha olefins plants that is contaminated with 2-EHA (2-ethyl hexyl amine). Using organic solvent nanofiltration membranes for this separation is quite challengeable. A membrane has to be a chemically stable in this environment with reasonable and stable separation factor. This paper shows that Teflon AF 2400 and cellulose acetate produced interesting results in 1-decene/2-EHA separation. The separation factor of Teflon AF 2400 is 3 with a stable permeance of 1.1x10-2 L/(m2·h·bar). Likewise, cellulose acetate gave 2-EHA/1-decene separation factor of 2 with a lower permeance of 3.67x10-3 L/(m2·h·bar). A series of hydrophilic membranes were tested but they did not give any separation due to high degree of swelling of 2-EHA with these polymers. The large swelling causes the membrane to lose its diffusivity selectivity because of an increase in the polymer's chain mobility.
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