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Pyridoacridine alkaloids from deep-water marine sponges of the family Pachastrellidae: structure revision of dercitin and related compounds and correlation with the kuanoniamines
Title
Pyridoacridine alkaloids from deep-water marine sponges of the family Pachastrellidae: structure revision of dercitin and related compounds and correlation with the kuanoniamines.
Creator
Gunawardana, G. P., Koehn, F. E., Lee, A. Y., Clardy, J., He, H-y., Faulkner, D. J., Harbor Branch Oceanographic Institute
Date Issued
1992
PURL
http://purl.flvc.org/FCLA/DT/3333000
Subject Headings
Sponges, Acridines, Alkaloids, Chemical structure
Format
Document (PDF)
1,1-Dimethyl-5,6-dihydroxyindolinium chloride from a deep water marine sponge, Dercitus sp.
Title
1,1-Dimethyl-5,6-dihydroxyindolinium chloride from a deep water marine sponge, Dercitus sp.
Creator
Kohmoto, S., McConnell, O. J., Wright, Amy E.
Date Issued
1988
PURL
http://purl.flvc.org/fau/fd/FA00007184
Subject Headings
Sponges, Marine metabolites, Chemical structure
Format
Document (PDF)
Eryloside E from an Atlantic sponge Erylus goffrilleri
Title
Eryloside E from an Atlantic sponge Erylus goffrilleri.
Creator
Gulavita, N. K., Wright, Amy E., Kelly-Borges, M., Longley, Ross E., Yarwood, Donna, Sills, Matthew A.
Date Issued
1994
PURL
http://purl.flvc.org/fau/fd/FA00007261
Subject Headings
Sponges, Terpenes, Glycosides, Chemical structure
Format
Document (PDF)
Batzellines A, B, and C. Novel pyrroloquinoline alkaloids from the sponge Batzella sp
Title
Batzellines A, B, and C. Novel pyrroloquinoline alkaloids from the sponge Batzella sp.
Creator
Sakemi, S., Sun, H. H., Jefford, C. W., Bernardinelli, G., Harbor Branch Oceanographic Institute
Date Issued
1989
PURL
http://purl.flvc.org/FCLA/DT/3353844
Subject Headings
Sponges, Alkaloids, Pyrroles, Quinolines, Chemical structure
Format
Document (PDF)
Discobahamins A and B, new peptides from the Bahamian deep water marine sponge Discodermia sp.
Title
Discobahamins A and B, new peptides from the Bahamian deep water marine sponge Discodermia sp.
Creator
Gunasekera, Sarath P., Pomponi, Shirley A., McCarthy, Peter J.
Date Issued
1994
PURL
http://purl.flvc.org/FCLA/DT/3333010
Subject Headings
Sponges, Peptides, Marine natural products, Chemical structure
Format
Document (PDF)
Diterpene metabolites from two chemotypes of the marine sponge Myrmekioderma styx
Title
Diterpene metabolites from two chemotypes of the marine sponge Myrmekioderma styx.
Creator
Sennett, Susan H., Pomponi, Shirley A., Wright, Amy E.
Date Issued
1992
PURL
http://purl.flvc.org/FCLA/DT/3333004
Subject Headings
Sponges, Diterpenes, Marine metabolites, Chemical structure
Format
Document (PDF)
Antitumor macrodiolides isolated from a marine sponge Theonella sp.: structure revision of misakinolide A
Title
Antitumor macrodiolides isolated from a marine sponge Theonella sp.: structure revision of misakinolide A.
Creator
Kato, Y., Fusetani, N., Matsunaga, S., Hashimoto, K., Sakai, R., Higa, T., Kashman, Y., Harbor Branch Oceanographic Institute
Date Issued
1987
PURL
http://purl.flvc.org/FCLA/DT/3353820
Subject Headings
Sponges, Antineoplastic agents, Macrolides, Chemical structure, Marine natural products
Format
Document (PDF)
New manzamine alkaloids from a sponge of the genus xestospongia
Title
New manzamine alkaloids from a sponge of the genus xestospongia.
Creator
Ichiba, T., Sakai, R., Kohmoto, S., Saucy, G., Higa, T., Harbor Branch Oceanographic Institute
Date Issued
1988
PURL
http://purl.flvc.org/FCLA/DT/3353822
Subject Headings
Alkaloids, Indole Alkaloids, Sponges, Cytotoxin, Carbazoles, Chemical structure
Format
Document (PDF)
Cytotoxic cembranoids from the gorgonian Pseudopterogorgia bipinnata
Title
Cytotoxic cembranoids from the gorgonian Pseudopterogorgia bipinnata.
Creator
Wright, Amy E., Burres, N. S., Schulte, G. K.
Date Issued
1989
PURL
http://purl.flvc.org/FCLA/DT/3353845
Subject Headings
Gorgonacea, Cytotoxins, Antineoplastic agents, Marine toxins, X-ray crystallography, Spectrum analysis, Chemical structure
Format
Document (PDF)
Corrosion initiation and propagation on corrosion resistant alloys embedded in concrete by accelerated chloride transport
Title
Corrosion initiation and propagation on corrosion resistant alloys embedded in concrete by accelerated chloride transport.
Creator
Gutierrez Tellez, Francisco., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
Two duplex stainless steels rebars: UNS32304SS and UNS32101SS, were selected to investigate the corrosion initiation and propagation in reinforced concrete specimens. The investigation is divided in two phases with two different methods to accelerate the transport of chlorides through the concrete and initiate corrosion in a short period of time. After corrosion had initiated and propagated for some time; selected specimens were terminated for visual examination. On specimens selected for...
Show moreTwo duplex stainless steels rebars: UNS32304SS and UNS32101SS, were selected to investigate the corrosion initiation and propagation in reinforced concrete specimens. The investigation is divided in two phases with two different methods to accelerate the transport of chlorides through the concrete and initiate corrosion in a short period of time. After corrosion had initiated and propagated for some time; selected specimens were terminated for visual examination. On specimens selected for autopsy, the rebars in the top row showed corrosion to various degrees. Corrosion had propagated to such extent on the terminated specimens that the specimen showed cracks. Stray current might have caused accelerated corrosion on rebars where corrosion had initiated. Based on chloride concentrations measured at the rebar trace, corrosion initiated: on S32101 rebars on average at 7.9 kg/m3, and S32101 rebars on average at 6.0 kg/m3. The findings suggest that S32304 rebars corroded at a slower than S32101.
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Date Issued
2013
PURL
http://purl.flvc.org/fcla/dt/3362380
Subject Headings
Concrete, Corrosion, Concrete construction, Reinforced concrete, Chemical resistance, Steel, Structural, Corrosion
Format
Document (PDF)
Initiation and propagation of corrosion in dry-cast reinforced concrete ring specimens
Title
Initiation and propagation of corrosion in dry-cast reinforced concrete ring specimens.
Creator
Seo, Bongjoon, Presuel-Moreno, Francisco, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
The corrosion propagation stage of D-CRP (types F and C) was tested under immersion in water, high humidity, and covered with wet sand. The half-cell potential, linear polarization test, and electrochemical impedance spectroscopy measurements were performed. Selected specimens were terminated after 300 days of exposure and visually inspected. Based on corrosion potential measurements obtained during the corrosion propagation observation, and calculated corrosion rate based on LPR measurements...
Show moreThe corrosion propagation stage of D-CRP (types F and C) was tested under immersion in water, high humidity, and covered with wet sand. The half-cell potential, linear polarization test, and electrochemical impedance spectroscopy measurements were performed. Selected specimens were terminated after 300 days of exposure and visually inspected. Based on corrosion potential measurements obtained during the corrosion propagation observation, and calculated corrosion rate based on LPR measurements: all specimens were actively corroding. Additionally, EIS-Rc values were calculated for FS, CS and CH specimens. The Rc_EIS were generally greater than Rc_LPR values. EIS spectra for CI and FI specimens usually included mass transport limitations, as these specimens were immersed. Both type of specimens immersed in water (FI and CI), appeared to have higher corrosion rate based on LPR-Rc. However, upon autopsy it was revealed that a more modest amount of corrosion occurred on the reinforcing steel of FI and CI terminated specimens.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA00004226, http://purl.flvc.org/fau/fd/FA00004226
Subject Headings
Concrete -- Deterioration, Concrete construction, Corrosion and anti corrosives, Reinforced concrete -- Chemical resistance, Tubular steel structures -- Deterioration
Format
Document (PDF)