Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Physical Sciences Peer-Reviewed Articles (3)
- Biological Sciences Peer-Reviewed Articles (2)
- Biological Sciences Research Data (2)
- Airplanes -- Fuel -- Environmental aspects (1)
- Aquatic Health Sciences Peer-Reviewed Articles (1)
-
- Atmospheric deposition (1)
- Aurelia aurita (1)
- Biogeochemistry (1)
- Biological Sciences Reports (1)
- CCRM Peer Reviewed Articles (1)
- Carbon cycle (Biogeochemistry (1)
- Chemistry (1)
- Data Assimilation; Ross Sea; Biogeochemical model; Phytoplankton; Phaeocystis antarctica; Glider (1)
- Electropolishing; Cu; deep eutectic solvent (1)
- Estuarine characteristics (1)
- Estuarine sediments -- Virginia -- Oyster -- Analysis (1)
- Institute History (VIMS) (1)
- Ionic liquid; electrochemical polishing; choline chloride; phosphoric acid; surface characterization; atomic force microscopy (1)
- Isotopes (1)
- Lesson Plans (1)
- NMR; coatings; single-sided; crosslinking; photocuring (1)
- Nitrogen (1)
- North Atlantic (1)
- Numerical modeling (1)
- Nutrients (1)
- Ocaen (1)
- Oceanography (1)
- Physical Sciences Reports (1)
- Plankton productivity (1)
- Research and Technical Reports (1)
- Publication Year
- Publication
Articles 61 - 68 of 68
Full-Text Articles in Physical Sciences and Mathematics
Gas Chromatographic Isolation Of Individual Compounds From Complex Matrices For Radiocarbon Dating, Ti Eglinton, Li Alueihare, Je Bauer, Erm Druffel, Ap Mcnichol
Gas Chromatographic Isolation Of Individual Compounds From Complex Matrices For Radiocarbon Dating, Ti Eglinton, Li Alueihare, Je Bauer, Erm Druffel, Ap Mcnichol
VIMS Articles
This paper describes the application of a novel, practical approach for isolation of individual compounds from complex organic matrices for natural abundance radiocarbon measurement. This is achieved through the use of automated preparative capillary gas chromatography (PCGC) to separate and recover sufficient quantities of individual target compounds for C-14 analysis by accelerator mass spectrometry (AMS). We developed and tested this approach using a suite of samples (plant lipids, petroleums) whose ages spanned the C-14 time scale and which contained a variety of compound types (fatty acids, sterols, hydrocarbons), Comparison of individual compound and bulk radiocarbon signatures for the isotopically homogeneous …
Ground Breaking Ceremony For The Marine Chemistry & Toxicology Building, Virginia Institute Of Marine Science, School Of Marine Science, College Of William And Mary
Ground Breaking Ceremony For The Marine Chemistry & Toxicology Building, Virginia Institute Of Marine Science, School Of Marine Science, College Of William And Mary
Miscellaneous
Ceremony held April 13, 1995. Program of the event.
Azidotetrakis(Trimethylphosphine)Nickel(Ii) Tetrafluoroborate, Caryn C. Carson, Robert D. Pike
Azidotetrakis(Trimethylphosphine)Nickel(Ii) Tetrafluoroborate, Caryn C. Carson, Robert D. Pike
Arts & Sciences Articles
The title complex, [Ni(N3)(C3H9P)4]BF4, is a nearly perfect trigonal bipyramid with the azide group at an apical position. The metal-azide bond angle, Nil-- NlmN2, of 138.6(5) ° is the largest observed for a terminal azide ligand.
Correlation Between Electron Capture Negative Chemical Ionization Mass Spectrometric Fragmentation And Calculated Internal Energies For Polychlorinated Biphenyls, John Greaves, Ellen Harvey, William G. Macintyre
Correlation Between Electron Capture Negative Chemical Ionization Mass Spectrometric Fragmentation And Calculated Internal Energies For Polychlorinated Biphenyls, John Greaves, Ellen Harvey, William G. Macintyre
VIMS Articles
Correlations between molecular structure and fragmentation observed in electron capture negative chemical ionization mass spectra (moderator gas = methane) of 49 selected tetrachlorinated, pentachlorinated, and hexachlorinated biphenyls have been investigated by using molecular modeling. The semiempirical general molecular orbital program MOPAC was used to calculate molecular properties for biphenyl and the 209 polychlorinated biphenyls. The mass spectrometric ionization and fragmentation processes were found to be linked to the number of chlorine atoms present on the biphenyl, and to the number of those chlorine atoms in the ortho (2, 2', 6, and 6') positions. The intensity of molecular ions increased with …
Single And Double Nucleophilic-Addition To Coordinated Pi-Hydrocarbons - Manganese-Mediated Functionalization Of Arenes, Robert D. Pike, D. A. Sweigart
Single And Double Nucleophilic-Addition To Coordinated Pi-Hydrocarbons - Manganese-Mediated Functionalization Of Arenes, Robert D. Pike, D. A. Sweigart
Arts & Sciences Articles
A range of carbon-donor nucleophiles add to the arene ring in (arene)Mn(CO)2L+ cations to give neutral cyclohexadienyl complexes that liberate monofunctionalized arenes upon oxidative removal of the metal. Treatment of the cyclohexadienyl complexes with the nitrosonium salt NOPF6 affords cationic metal nitrosyl complexes that are attacked by a second nucleophile to give cis- and trans-difunctionalized 1,3-cyclohexadienes. When the metal center is chiral, this procedure provides a route to enantiomerically pure cyclohexadienes. 1. Introduction 2. Mechanism of Nucleophilic Addition 3. Single Nucleophilic Addition 4. Double Nucleophilic Addition 5. Conclusions
Determination Of Tributyltin In The Marine-Environment, Rg Huggett, Michael A. Unger, Fa Espourteille, Cd Rice
Determination Of Tributyltin In The Marine-Environment, Rg Huggett, Michael A. Unger, Fa Espourteille, Cd Rice
VIMS Articles
Tributyltin (TBT) is a biocide used in antifouling paints to protect hulls from nuisance organisms such as barnacles, worms and algae. The use of TBT paints has increased over the past decade due to its effectiveness as an antifoulant which is related to its toxicity. Water concentrations of less than 100 ng L- have been shown to harm some aquatic species in laboratory tests and observations in the natural environment indicate that levels below 10 ng L- may be harmful. Tributyltin is bioconcentrated by many species to levels of one thousand, or more, times ambient water concentrations. Sediment-water partitioning coefficients …
Hydrocarbon Fuel Chemistry : Sediment Water Interaction, William G. Macintyre, C. L. Smith, P. O. Defur, C. W. Su
Hydrocarbon Fuel Chemistry : Sediment Water Interaction, William G. Macintyre, C. L. Smith, P. O. Defur, C. W. Su
Reports
The objective of this program was to determine the effect of sediments on aqueous solutions of selected United States Air Force (USAF} hydrocarbon fuels. Effects of sediment type, organic carbon content, pH, temperature and salinity on interaction of dissolved hydrocarbons with sediment were studied. The results of this work can be used to estimate the role of sediment hydrocarbon interaction terms in fate models of aqueous systems, such as the Environmental Protection Agency "EXAMS" model.
Distribution Of Ammonia Nitrogen In The Lower York River, Virginia : Spring, 1961, Bernard C. Patten, Virginia Fisheries Laboratory, Virginia Institute Of Marine Science
Distribution Of Ammonia Nitrogen In The Lower York River, Virginia : Spring, 1961, Bernard C. Patten, Virginia Fisheries Laboratory, Virginia Institute Of Marine Science
Reports
No abstract provided.