Now showing items 11-20 of 259
Effect of Dopants on Zirconia Stabilization—An X-ray Absorption Study: III, Charge-Compensating Dopants
(Blackwell Publishing Ltd, 1994-05)
The vibrational relaxation of I2I2 (X 1Σg+)(X1Σg+) in mesitylene
(The American Institute of Physics, 1998-03-22)
Transient absorption measurements between 400 nm and 570 nm are used to extract information on the vibrational relaxation of iodine in the complexing solvent mesitylene. The well characterized nature of the I2I2-arene ...
The synthesis and chemistry of certain anthelmintic benzimidazoles
(Elsevier, 1990-04)
A basis for interest in the benzimidazole ring system as a nucleus from which to develop potential chemotherapeutic agents was established in the 1950s when it was found that 5,6-dimethyl-l-([alpha]-D-ribofuranosyl)benzimidazole ...
The -ills of Educational Reform
(Springer-Verlag; Springer-Verlag New York, Inc., 1998-02)
Many instructors have sincerely accepted problem solving and critical thinking as instructional objectives. This kind of language, especially notions of the liberal-arts values of taking college classes, is used in compelling ...
Synthesis of polyamines with pendant cyanoimidazole units and their electrochemical properties
(John Wiley & Sons, Inc., 1998-10)
The 2-(1-methyl-4,5-dicyanoimidazolyl) group was attached to poly(diallylamine) and polyethylenimine, affording polymers containing an electron-withdrawing pendant group. The key to their preparation is high reactivity of ...
Fluorescence Yield Near Edge Spectroscopy (FYNES) of benzene adsorbed in Na-Y zeolite
(Baltzer Science Publishers, Baarn/Kluwer Academic Publishers; J.C. Baltzer AG, Scientific Publishing Company ; Springer Science+Business Media, 1990-01)
Benzene adsorbed in sodium-Y zeolite has been investigated using Fluorescence Yield Near Edge Spectroscopy (FYNES). These studies demonstrate that FYNES measurements are feasible as a direct probe of the local electronic ...
Grazing‐angle characterization of photosynthetic oxygen evolution protein monolayers
(The American Institute of Physics, 1996-09)
Variable‐period x‐ray standing wave (XSW) spectroscopy has been shown to be a practical probe for studying metalloproteins. The photosynthetic oxygen evolving complex (OEC) is a transmembrane multipolypeptide complex that ...
Microwave spectra of C2H4⋅H2O and isotopomers
(The American Institute of Physics, 1993-01-15)
The rotational spectrum of the ethylene‐water complex has been reexamined using Fourier‐transform microwave spectroscopy. Several new transitions were observed in the spectrum of the normal isotopic species. All the ...
On-capillary raman spectroscopy of nucleoside/borate complexes separated by isotachophoresis Presented at the Nineteenth International Symposium on Capillary Chromatography and Electrophoresis, Wintergreen, VA, May 1997
(John Wiley & Sons, Inc., 1998)
On-capillary normal Raman spectroscopy with 532 nm excitation is used as a detection method for capillary isotachophoresis (ITP) of the nucleosides: adenosine, cytidine, guanosine, and uridine. The compounds are separated ...
Activity of acyclic halogenated tubercidin analogs against human cytomegalovirus and in uninfected cells
(Elsevier, 1991-09)
Novel acyclic halogenated tubercidins (4-amino-5-halo-7-[(2-hydroxyethoxy)-methyl]pyrrolo[2,3-d]pyrimidines) were examined for their ability to inhibit human cytomegalovirus (HCMV) in yield reduction assays. 5-Bromo acyclic ...