Volume 123 number 1 2 CHEMICAL PHYSICS LETTERS 3 January 1986 MEASUREMENT OF ADSORPTION ISOTHERMS OF CARBON MONOXIDE IN ZEOLITES BY MEANS OF C NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY A MICHAEL D MICHEL and H PFEIFER Sektion Physik der Karl'- Marx -Universitat Leipzig Linnestrasse 5 DDR-7010
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COVID-19 Resources Reliable information about the coronavirus (COVID-19) is available from the World Health Organization (current situation international travel) Numerous and frequently-updated resource results are available from this WorldCat search OCLC's WebJunction has pulled together information and resources to assist library staff as they consider how to handle
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Caesium or cesium [note 1] is a chemical element with symbol Cs and atomic number 55 It is a soft silvery-gold alkali metal with a melting point of 28 C (82 F) which makes it one of only five elemental metals that are liquid at or near room temperature [note 2] Caesium is an alkali metal and has physical and chemical properties similar to those of rubidium and potassium
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[Perspectives in the use of NMR for the biochemical study of the white matter of the brain] [Article in French] Sappey Marinier D Briguet A Delmau J This paper presents a survey of the function and the biochemical composition of the myelin sheath Proton nuclear magnetic resonance spectroscopy of extracts of human white matter tissue is a
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You searched for: Journal Journal of the American Chemical Society Remove constraint Journal: Journal of the American Chemical Society Publication Year 2012 Remove constraint Publication Year: 2012 Source 2012 v 134 no 3 Remove constraint Source: 2012 v 134 no 3
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18 LDA lithium diisopropylamide m CPBA meta chloroperbenzoic acid Mes mesitylene MS molecular sieves n normal (e g unbranched alkyl chain) NMO N morpholine oxide NMR nuclear magnetic resonance NR no reaction Nuc nucleophile (general) Ph phenyl PMB p methoxybenzyl PPTS pyridinium p toluenesulfonate TsOH p toluenesulfonic acid Pyr pyridine r t
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oxide and diisopropyl hydrazodicarboxylate in a nearly equimolar ratio by proton Nuclear Magnetic Resonance [NMR]) was 195 g (~81% of theory) indicating that about 46 g of these side products would be present in the product The ether was removed from the collected filtrate by rotary evaporation (1 L
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contact and nuclear magnetic resonance spectroscopic techniques to more thoroughly char-acterize the functional layer and to probe the interaction between uranyl and the surface In doing so a greater understanding of the limitations of these types of materials has been achieved
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The C n m r of carbon monoxide adsorbed on decationated zeolites of type Y is characterized by extremely large resonance shifts to lower magnetic field The strong dependence of this resonance shift on temperature and on coverage can be explained by means of an exchange model described in the literature This trea
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Nuclear Magnetic Resonance spectra were obtained on a Bruker Avance 400 wide-bore NMR spectrometer Nuclei observed were proton (400 13 MHz) 13C (100 61 MHz) 19F (376 498 MHz) and 31P (161 975 MHz) All proton carbon and fluorine NMR spectra on solvent samples were obtained by diluting typically 100 L aliquots with a fixed volume of deuterochloroform
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Part of the reason salt dissolves so well in water is that the polarized O–H bonds attract the negatively charged chloride ions It has therefore been common to include O–H or N–H bonds in molecular receptors designed to capture anions such as chloride Liu et al report the surprising finding that sufficiently polarized C–H bonds can work even better (see the Perspective by
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We expect that the method conditions and performance will be similar for different NMR magnetic fields It should be noted that T1 spin relaxation and consequently the interpulse delay for absolute quantification by NMR are dependent on the magnetic field However the effects of the change in the delay on the robustness reliability and
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The CuII−GdIII magnetic interaction through two phenoxo bridges (J1) and an amide bridge (J2) are both ferromagnetic 1Tb and 1Dy showed frequency dependence of ac magnetic susceptibility under zero dc magnetic field 2Tb and 2Dy showed a meaningful frequency dependence under an external magnetic field Minimize
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Almost all caesium produced from nuclear fission comes from the beta decay of originally more neutron-rich fission products passing through various isotopes of iodine and xenon Because iodine and xenon are volatile and can diffuse through nuclear fuel or air radioactive caesium is often created far from the original site of fission
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Volume 123 number 1 2 CHEMICAL PHYSICS LETTERS 3 January 1986 MEASUREMENT OF ADSORPTION ISOTHERMS OF CARBON MONOXIDE IN ZEOLITES BY MEANS OF C NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY A MICHAEL D MICHEL and H PFEIFER Sektion Physik der Karl'- Marx -Universitat Leipzig Linnestrasse 5 DDR-7010
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Read Symbiosis between in vivo and in vitro NMR spectroscopy: The creatine N -acetylaspartate glutamate and GABA content of the epileptic human brain Magnetic Resonance Imaging on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips
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The mesh was then passed through a sieve to eliminate cell lumps or conjunctive tissue rests HUVEC monocultures were obtained by separating the ECs using magnetic beads that specifically bind endothelial cells (MACS Germany) The quality of the obtained monoculture was verified using FACS analyses on CD31 (BD Germany)
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It has only one stable isotope caesium-133 Caesium is mined mostly from pollucite while the radioisotopes especially caesium-137 a fission product are extracted from waste produced by nuclear reactors The German chemist Robert Bunsen and physicist Gustav Kirchhoff discovered caesium in 1860 by the newly developed method of flame
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Read Rigidified Calixarenes Bearing Four Carbamoylmethylphosphineoxide or Carbamoylmethylphosphoryl Functions at the Wide Rim Chemistry - A European Journal on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips
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The proposed formation of complex 5 from 4 – and 3 was further substantiated via 1 H nuclear magnetic resonance (NMR) spectroscopic titration As expected the pyrrole NH protons experience a significant downfield shift An upfield shift in the Ar–H proton signals of the benzimidazolium subunits and the N-methyl protons was also seen
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07 10 2003The nuclear magnetic resonance spectrum of this compound complies with that given by Arduini et al Ttrahdron 1996 52 p 6011-6018 [4] b) Preparation of Tetrakis-amino-bis-ring-3-calix[4]-arene (Compound 1c) 5 ml of hydrazine N 2 H 4 H 2 O is added once to a suspension of 0 3 g of compound 1b and 0 3 g of Raney nickel in 30 ml of
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