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Remarkable homology in the electronic spectra of the mixed-valence cation and anion radicals of a conjugated bis(porphyrinyl)butadiyne.

Chemical communications (Cambridge, England)

Arnold DP, Hartnell RD, Heath GA, Newby L, Webster RD.
PMID: 12119707
Chem Commun (Camb). 2002 Apr 07;(7):754-5. doi: 10.1039/b200803n.

The pi-radical cation and anion of the dizinc complex of a bis(triarylporphyrinyl)butadiyne, 1+ and 1-, respectively, display remarkably similar near-IR signatures, with intense bands near 1000 and 2500 nm, as predicted by the appropriate frontier-orbital model for inter-porphyrin coupling...

Deep underground gamma spectrometric measurement of 26Al in meteorite samples.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Arnold D, Neumaier S, Sima O.
PMID: 11839047
Appl Radiat Isot. 2002 Jan-Feb;56(1):405-8. doi: 10.1016/s0969-8043(01)00222-6.

26Al is routinely measured in meteorite samples by accelerator mass spectrometry (AMS). PTB participates in an international intercomparison between laboratories using AMS and gamma-ray spectrometry to improve the quality of such measurements. We performed gamma spectrometric measurements at the...

Radical Ions in Photochemistry. 44. The Photo-NOCAS Reaction with Acetonitrile as the Nucleophile.

The Journal of organic chemistry

de Lijser HJ, Arnold DR.
PMID: 11671982
J Org Chem. 1997 Nov 28;62(24):8432-8438. doi: 10.1021/jo971197p.

Studies on the photoinduced electron transfer (PET) reactions of isobutylene (2-methylpropene, 1) in the absence of methanol have identified a new photochemical nucleophile-olefin combination, aromatic substitution (photo-NOCAS) reaction. Under these conditions acetonitrile was found to act as the nucleophile...

Extension of the efficiency calibration of germanium detectors using the GESPECOR software.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Arnold D, Sima O.
PMID: 15177331
Appl Radiat Isot. 2004 Aug-Sep;61(2):117-21. doi: 10.1016/j.apradiso.2004.03.031.

To avoid losses due to coincidence summing, the efficiency calibration of gamma-spectrometers is often carried out by means of radionuclides emitting only one photon during a single decay. Calibration with this kind of radionuclides has, however the disadvantage that...

Information assimilation and distribution challenges and goals for real and virtual journals.

Journal of clinical gastroenterology

Modlin IM, Adler G, Alexander K, Arnold R, Brenner DA, Corazziari E, Floch MH, LaPorte RE, Peterson WL, Quigley EM, Shapiro MD, Spechler SJ, Spiller RC, Tytgat GN, Wiegers W.
PMID: 15718859
J Clin Gastroenterol. 2005 Mar;39(3):181-8. doi: 10.1097/01.mcg.0000152791.45765.32.

The distribution of biomedical information was transfigured over three centuries ago with the introduction of scientific journals. This enabled the widespread dissemination of data to global audiences and greatly facilitated not only the advance of science but amplified the...

A tool for processing decay scheme data that encompasses coincidence summing calculations.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Sima O, Arnold D.
PMID: 18343142
Appl Radiat Isot. 2008 Jun-Jul;66(6):705-10. doi: 10.1016/j.apradiso.2008.02.007. Epub 2008 Feb 09.

A description is given of the tool implemented in GESPECOR to process coincidence summing corrections and derive decay scheme data. The method of analysis produces relevant decay scheme data and the joint emission probability for any group of photons...

Induced ovulation in Atlantic croaker (Sciaenidae) using hCG and an LHRH analog: A preliminary study.

Theriogenology

Gwo JC, Strawn K, Arnold CR.
PMID: 16727215
Theriogenology. 1993 Feb;39(2):353-61. doi: 10.1016/0093-691x(93)90378-i.

A single dose of LHRHa (D-Ala(6), des Gly(10)- LHRH-ethylamide; 100 mug/kg body weight); administered by intramuscular injection, effectively induced ovulation in the Atlantic croaker (Micropogonias undulatus ); 37 of 40 (92%) females were successfully hand-stripped and there was no...

THE GEOLOGICAL SOCIETY OF WASHINGTON.

Science (New York, N.Y.)

Arnold R.
PMID: 17734478
Science. 1908 Mar 13;27(689):426-7. doi: 10.1126/science.27.689.426.

No abstract available.

Computed tomographic analysis of meteorite inclusions.

Science (New York, N.Y.)

Arnold JR, Testa JP, Friedman PJ, Kambic GX.
PMID: 17815315
Science. 1983 Jan 28;219(4583):383-4. doi: 10.1126/science.219.4583.383.

The discovery of isotopic anomalies in the calcium- and aluminum-rich inclusions of the Allende meteorite has improved our knowledge of the origin of the solar system. Inability to find more inclusions without destroying the meteorite has hampered further study....

Pattern of bombardment-produced radionuclides in rock 10017 and in lunar soil.

Science (New York, N.Y.)

Shedlovsky JP, Honda M, Reedy RC, Evans JC, Lal D, Lindstrom RM, Delany AC, Arnold JR, Loosli HH, Fruchter JS, Finkel RC.
PMID: 17781502
Science. 1970 Jan 30;167(3918):574-6. doi: 10.1126/science.167.3918.574.

A large number of radionuclides have been measured as a function of depth in lunar rock 10017 and in bulk fines. Data are reported on (10)Be, (22)Na, (26)Al, (36)Cl, (49)V, (53)mn, (54)Mn (55)Fe, (56)Co, (57)Co, and (59)Ni and on...

Alpha Particles in Solar Cosmic Rays over the Last 80,000 Years.

Science (New York, N.Y.)

Lanzerotti LJ, Reedy RC, Arnold JR.
PMID: 17841198
Science. 1973 Mar 23;179(4079):1232-4. doi: 10.1126/science.179.4079.1232.

Present-day (1967 to 1969) fluxes of alpha particles from solar cosmic rays, determined from satellite measurements, were used to calculate the production rates of cobalt-57, cobalt-58, and nickel-59 in lunar surface samples. Comparisons with the activities of nickel-59 (half-life,...

Evaluation and management of the incidental adrenal mass.

Proceedings (Baylor University. Medical Center)

Arnold DT, Reed JB, Burt K.
PMID: 16278716
Proc (Bayl Univ Med Cent). 2003 Jan;16(1):7-12. doi: 10.1080/08998280.2003.11927882.

No abstract available.

Showing 25 to 36 of 792 entries