Results 241 to 250 of about 1,004,004 (297)

Abundant oxygen vacancies assisting NaPO₃ supported by porous carbon derived from cotton pulp black liquor as a transition metal-free electrocatalyst for efficiently enhancing the urea oxidation reaction. [PDF]

RSC Adv
Liu Z, Li H, Li Z, Zheng Y, Liao R, Li J, Wang L, Jiang J, Hu L, Zhao J.   +9 more
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Carbon-11 Labeled Amino Acids and Peptides

, 2018
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K-capture in carbon 11

Philosophical Magazine, 1957
Abstract K-capture in 11C has been observed and the K/β+ ratio found. Comparison with theory leads to a value for the ratio of the Fermi coupling constants. Proportional counters were employed with a gaseous source, and two anti-coincidence systems were used, in turn, to reduce wall effects.
J. Scobie, G. M. Lewis
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Synthesis of carbon-11 labelled diazomethane

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1987
Abstract This work describes a method of synthesis of [ 11 C]diazomethane from [ 11 C]methane. [ 11 C]CH 4 produced by irradiation of a N 2 -5% H 2 mixture with 20 MeV protons is converted into [ 11 C]chloroform by chlorination on pumice stone impregnated with CuCl 2 at 310°C.
C. Crouzel, R. Amano, D. Fournier
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Tumor detection with carbon-11-labelled amino acids

European Journal of Nuclear Medicine, 1984
A comparative study of tumor detection with ten 11C-labeled amino acids including four newly synthesized amino acids was carried out to find the most valuable 11C-labeled amino acid for the diagnosis of cancer. 11C-L-methionine showed the highest uptake by the experimental rat hepatoma AH109A (2.7% administered dose/g at 20 min, tumor to blood ratio ...
Kazuo Kubota, Kenji Yamada, Hiroshi Fukada, Satoshi Endo, Masatoshi Ito, Yoshinao Abe, Tatsuo Yamaguchi, Takehiko Fujiwara, Tachio Sato, Kengo Ito, Seiro Yoshioka, Jun Hatazawa, Taiju Matsuzawa, Ren Iwata, Tatsuo Ido   +14 more
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Feasibility of planar myocardial carbon 11-acetate imaging

Journal of Nuclear Cardiology, 2000
Myocardial oxygen consumption can be determined by using carbon 11-acetate (11C-acetate) and positron emission tomography (PET). The aim of this study was to validate planar 11C-acetate scintigraphy in healthy individuals by relating the myocardial clearance rate of dynamic 11C-acetate scintigraphy with the rate-pressure product, which is used as a ...
L J, Klein, F C, Visser, S A, Nurmohamed, A, Vink, J H, Peters, P, Knaapen, P S, Kruijer, J D, Herscheid, G J, Teule, C A, Visser   +9 more
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Carbon‐11 radiolabeling of an oligopeptide containing tryptophan hydrochloride via a Pictet‐Spengler reaction using carbon‐11 formaldehyde

Journal of Peptide Science, 2013
A procedure for the synthesis of a11C‐labeled oligopeptide containing [1‐11C]1,2,3,4‐tetrahydro‐β‐carboline‐3‐carboxylic acid ([1‐11C]Tpi) from the corresponding Trp•HCl‐containing peptides has been developed involving a Pictet‐Spengler reaction with [11C]formaldehyde.
Masayuki, Hanyu, Yuuki, Takada, Hiroki, Hashimoto, Kazunori, Kawamura, Ming-Rong, Zhang, Toshimitsu, Fukumura   +5 more
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Carbon-11 Radiopharmaceuticals - Radiopharmacy Aspects

1992
Examples of the routine production of some 11C-labelled PET radiopharmaceuticals which have been set up for patient application are discussed. This includes recommendations and general guidelines for safety and procedures for the a) preparation of the radionuclide and the primary precursors b) synthesis of some secondary precursors c) synthesis ...
C. Halldin, S-O. Nilsson
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